diff --git a/example/example.vcxproj b/example/example.vcxproj index 2b8c4e55..63db2b5d 100644 --- a/example/example.vcxproj +++ b/example/example.vcxproj @@ -56,13 +56,13 @@ Application true - v140 + v120 Unicode Application false - v140 + v120 true Unicode diff --git a/include/spdlog/fmt/bundled/format.cc b/include/spdlog/fmt/bundled/format.cc index 0f7e0aa2..dbe0c1ec 100644 --- a/include/spdlog/fmt/bundled/format.cc +++ b/include/spdlog/fmt/bundled/format.cc @@ -1,557 +1,560 @@ -/* - Formatting library for C++ - - Copyright (c) 2012 - 2016, Victor Zverovich - All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - - 1. Redistributions of source code must retain the above copyright notice, this - list of conditions and the following disclaimer. - 2. Redistributions in binary form must reproduce the above copyright notice, - this list of conditions and the following disclaimer in the documentation - and/or other materials provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND - ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR - ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -// Commented out by spdlog to use header only -// #include "fmt/format.h" -// #include "fmt/printf.h" - -#include - -#include -#include -#include -#include -#include -#include // for std::ptrdiff_t - -#if defined(_WIN32) && defined(__MINGW32__) -# include -#endif - -#if FMT_USE_WINDOWS_H -# if defined(NOMINMAX) || defined(FMT_WIN_MINMAX) -# include -# else -# define NOMINMAX -# include -# undef NOMINMAX -# endif -#endif - -using fmt::internal::Arg; - -#if FMT_EXCEPTIONS -# define FMT_TRY try -# define FMT_CATCH(x) catch (x) -#else -# define FMT_TRY if (true) -# define FMT_CATCH(x) if (false) -#endif - -#ifdef _MSC_VER -# pragma warning(push) -# pragma warning(disable: 4127) // conditional expression is constant -# pragma warning(disable: 4702) // unreachable code -// Disable deprecation warning for strerror. The latter is not called but -// MSVC fails to detect it. -# pragma warning(disable: 4996) -#endif - -// Dummy implementations of strerror_r and strerror_s called if corresponding -// system functions are not available. -static inline fmt::internal::Null<> strerror_r(int, char *, ...) { - return fmt::internal::Null<>(); -} -static inline fmt::internal::Null<> strerror_s(char *, std::size_t, ...) { - return fmt::internal::Null<>(); -} - -namespace fmt { - -FMT_FUNC internal::RuntimeError::~RuntimeError() throw() {} -FMT_FUNC FormatError::~FormatError() throw() {} -FMT_FUNC SystemError::~SystemError() throw() {} - -namespace { - -#ifndef _MSC_VER -# define FMT_SNPRINTF snprintf -#else // _MSC_VER -inline int fmt_snprintf(char *buffer, size_t size, const char *format, ...) { - va_list args; - va_start(args, format); - int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args); - va_end(args); - return result; -} -# define FMT_SNPRINTF fmt_snprintf -#endif // _MSC_VER - -#if defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT) -# define FMT_SWPRINTF snwprintf -#else -# define FMT_SWPRINTF swprintf -#endif // defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT) - -const char RESET_COLOR[] = "\x1b[0m"; - -typedef void (*FormatFunc)(Writer &, int, StringRef); - -// Portable thread-safe version of strerror. -// Sets buffer to point to a string describing the error code. -// This can be either a pointer to a string stored in buffer, -// or a pointer to some static immutable string. -// Returns one of the following values: -// 0 - success -// ERANGE - buffer is not large enough to store the error message -// other - failure -// Buffer should be at least of size 1. -int safe_strerror( - int error_code, char *&buffer, std::size_t buffer_size) FMT_NOEXCEPT { - FMT_ASSERT(buffer != 0 && buffer_size != 0, "invalid buffer"); - - class StrError { - private: - int error_code_; - char *&buffer_; - std::size_t buffer_size_; - - // A noop assignment operator to avoid bogus warnings. - void operator=(const StrError &) {} - - // Handle the result of XSI-compliant version of strerror_r. - int handle(int result) { - // glibc versions before 2.13 return result in errno. - return result == -1 ? errno : result; - } - - // Handle the result of GNU-specific version of strerror_r. - int handle(char *message) { - // If the buffer is full then the message is probably truncated. - if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1) - return ERANGE; - buffer_ = message; - return 0; - } - - // Handle the case when strerror_r is not available. - int handle(internal::Null<>) { - return fallback(strerror_s(buffer_, buffer_size_, error_code_)); - } - - // Fallback to strerror_s when strerror_r is not available. - int fallback(int result) { - // If the buffer is full then the message is probably truncated. - return result == 0 && strlen(buffer_) == buffer_size_ - 1 ? - ERANGE : result; - } - - // Fallback to strerror if strerror_r and strerror_s are not available. - int fallback(internal::Null<>) { - errno = 0; - buffer_ = strerror(error_code_); - return errno; - } - - public: - StrError(int err_code, char *&buf, std::size_t buf_size) - : error_code_(err_code), buffer_(buf), buffer_size_(buf_size) {} - - int run() { - strerror_r(0, 0, ""); // Suppress a warning about unused strerror_r. - return handle(strerror_r(error_code_, buffer_, buffer_size_)); - } - }; - return StrError(error_code, buffer, buffer_size).run(); -} - -void format_error_code(Writer &out, int error_code, - StringRef message) FMT_NOEXCEPT { - // Report error code making sure that the output fits into - // INLINE_BUFFER_SIZE to avoid dynamic memory allocation and potential - // bad_alloc. - out.clear(); - static const char SEP[] = ": "; - static const char ERROR_STR[] = "error "; - // Subtract 2 to account for terminating null characters in SEP and ERROR_STR. - std::size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2; - typedef internal::IntTraits::MainType MainType; - MainType abs_value = static_cast(error_code); - if (internal::is_negative(error_code)) { - abs_value = 0 - abs_value; - ++error_code_size; - } - error_code_size += internal::count_digits(abs_value); - if (message.size() <= internal::INLINE_BUFFER_SIZE - error_code_size) - out << message << SEP; - out << ERROR_STR << error_code; - assert(out.size() <= internal::INLINE_BUFFER_SIZE); -} - -void report_error(FormatFunc func, int error_code, - StringRef message) FMT_NOEXCEPT { - MemoryWriter full_message; - func(full_message, error_code, message); - // Use Writer::data instead of Writer::c_str to avoid potential memory - // allocation. - std::fwrite(full_message.data(), full_message.size(), 1, stderr); - std::fputc('\n', stderr); -} -} // namespace - -namespace internal { - -// This method is used to preserve binary compatibility with fmt 3.0. -// It can be removed in 4.0. -FMT_FUNC void format_system_error( - Writer &out, int error_code, StringRef message) FMT_NOEXCEPT { - fmt::format_system_error(out, error_code, message); -} -} // namespace internal - -FMT_FUNC void SystemError::init( - int err_code, CStringRef format_str, ArgList args) { - error_code_ = err_code; - MemoryWriter w; - format_system_error(w, err_code, format(format_str, args)); - std::runtime_error &base = *this; - base = std::runtime_error(w.str()); -} - -template -int internal::CharTraits::format_float( - char *buffer, std::size_t size, const char *format, - unsigned width, int precision, T value) { - if (width == 0) { - return precision < 0 ? - FMT_SNPRINTF(buffer, size, format, value) : - FMT_SNPRINTF(buffer, size, format, precision, value); - } - return precision < 0 ? - FMT_SNPRINTF(buffer, size, format, width, value) : - FMT_SNPRINTF(buffer, size, format, width, precision, value); -} - -template -int internal::CharTraits::format_float( - wchar_t *buffer, std::size_t size, const wchar_t *format, - unsigned width, int precision, T value) { - if (width == 0) { - return precision < 0 ? - FMT_SWPRINTF(buffer, size, format, value) : - FMT_SWPRINTF(buffer, size, format, precision, value); - } - return precision < 0 ? - FMT_SWPRINTF(buffer, size, format, width, value) : - FMT_SWPRINTF(buffer, size, format, width, precision, value); -} - -template -const char internal::BasicData::DIGITS[] = - "0001020304050607080910111213141516171819" - "2021222324252627282930313233343536373839" - "4041424344454647484950515253545556575859" - "6061626364656667686970717273747576777879" - "8081828384858687888990919293949596979899"; - -#define FMT_POWERS_OF_10(factor) \ - factor * 10, \ - factor * 100, \ - factor * 1000, \ - factor * 10000, \ - factor * 100000, \ - factor * 1000000, \ - factor * 10000000, \ - factor * 100000000, \ - factor * 1000000000 - -template -const uint32_t internal::BasicData::POWERS_OF_10_32[] = { - 0, FMT_POWERS_OF_10(1) -}; - -template -const uint64_t internal::BasicData::POWERS_OF_10_64[] = { - 0, - FMT_POWERS_OF_10(1), - FMT_POWERS_OF_10(ULongLong(1000000000)), - // Multiply several constants instead of using a single long long constant - // to avoid warnings about C++98 not supporting long long. - ULongLong(1000000000) * ULongLong(1000000000) * 10 -}; - -FMT_FUNC void internal::report_unknown_type(char code, const char *type) { - (void)type; - if (std::isprint(static_cast(code))) { - FMT_THROW(FormatError( - format("unknown format code '{}' for {}", code, type))); - } - FMT_THROW(FormatError( - format("unknown format code '\\x{:02x}' for {}", - static_cast(code), type))); -} - -#if FMT_USE_WINDOWS_H - -FMT_FUNC internal::UTF8ToUTF16::UTF8ToUTF16(StringRef s) { - static const char ERROR_MSG[] = "cannot convert string from UTF-8 to UTF-16"; - if (s.size() > INT_MAX) - FMT_THROW(WindowsError(ERROR_INVALID_PARAMETER, ERROR_MSG)); - int s_size = static_cast(s.size()); - int length = MultiByteToWideChar( - CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, 0, 0); - if (length == 0) - FMT_THROW(WindowsError(GetLastError(), ERROR_MSG)); - buffer_.resize(length + 1); - length = MultiByteToWideChar( - CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, &buffer_[0], length); - if (length == 0) - FMT_THROW(WindowsError(GetLastError(), ERROR_MSG)); - buffer_[length] = 0; -} - -FMT_FUNC internal::UTF16ToUTF8::UTF16ToUTF8(WStringRef s) { - if (int error_code = convert(s)) { - FMT_THROW(WindowsError(error_code, - "cannot convert string from UTF-16 to UTF-8")); - } -} - -FMT_FUNC int internal::UTF16ToUTF8::convert(WStringRef s) { - if (s.size() > INT_MAX) - return ERROR_INVALID_PARAMETER; - int s_size = static_cast(s.size()); - int length = WideCharToMultiByte(CP_UTF8, 0, s.data(), s_size, 0, 0, 0, 0); - if (length == 0) - return GetLastError(); - buffer_.resize(length + 1); - length = WideCharToMultiByte( - CP_UTF8, 0, s.data(), s_size, &buffer_[0], length, 0, 0); - if (length == 0) - return GetLastError(); - buffer_[length] = 0; - return 0; -} - -FMT_FUNC void WindowsError::init( - int err_code, CStringRef format_str, ArgList args) { - error_code_ = err_code; - MemoryWriter w; - internal::format_windows_error(w, err_code, format(format_str, args)); - std::runtime_error &base = *this; - base = std::runtime_error(w.str()); -} - -FMT_FUNC void internal::format_windows_error( - Writer &out, int error_code, StringRef message) FMT_NOEXCEPT { - FMT_TRY { - MemoryBuffer buffer; - buffer.resize(INLINE_BUFFER_SIZE); - for (;;) { - wchar_t *system_message = &buffer[0]; - int result = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, - 0, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), - system_message, static_cast(buffer.size()), 0); - if (result != 0) { - UTF16ToUTF8 utf8_message; - if (utf8_message.convert(system_message) == ERROR_SUCCESS) { - out << message << ": " << utf8_message; - return; - } - break; - } - if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) - break; // Can't get error message, report error code instead. - buffer.resize(buffer.size() * 2); - } - } FMT_CATCH(...) {} - fmt::format_error_code(out, error_code, message); // 'fmt::' is for bcc32. -} - -#endif // FMT_USE_WINDOWS_H - -FMT_FUNC void format_system_error( - Writer &out, int error_code, StringRef message) FMT_NOEXCEPT { - FMT_TRY { - internal::MemoryBuffer buffer; - buffer.resize(internal::INLINE_BUFFER_SIZE); - for (;;) { - char *system_message = &buffer[0]; - int result = safe_strerror(error_code, system_message, buffer.size()); - if (result == 0) { - out << message << ": " << system_message; - return; - } - if (result != ERANGE) - break; // Can't get error message, report error code instead. - buffer.resize(buffer.size() * 2); - } - } FMT_CATCH(...) {} - fmt::format_error_code(out, error_code, message); // 'fmt::' is for bcc32. -} - -template -void internal::ArgMap::init(const ArgList &args) { - if (!map_.empty()) - return; - typedef internal::NamedArg NamedArg; - const NamedArg *named_arg = 0; - bool use_values = - args.type(ArgList::MAX_PACKED_ARGS - 1) == internal::Arg::NONE; - if (use_values) { - for (unsigned i = 0;/*nothing*/; ++i) { - internal::Arg::Type arg_type = args.type(i); - switch (arg_type) { - case internal::Arg::NONE: - return; - case internal::Arg::NAMED_ARG: - named_arg = static_cast(args.values_[i].pointer); - map_.push_back(Pair(named_arg->name, *named_arg)); - break; - default: - /*nothing*/; - } - } - return; - } - for (unsigned i = 0; i != ArgList::MAX_PACKED_ARGS; ++i) { - internal::Arg::Type arg_type = args.type(i); - if (arg_type == internal::Arg::NAMED_ARG) { - named_arg = static_cast(args.args_[i].pointer); - map_.push_back(Pair(named_arg->name, *named_arg)); - } - } - for (unsigned i = ArgList::MAX_PACKED_ARGS;/*nothing*/; ++i) { - switch (args.args_[i].type) { - case internal::Arg::NONE: - return; - case internal::Arg::NAMED_ARG: - named_arg = static_cast(args.args_[i].pointer); - map_.push_back(Pair(named_arg->name, *named_arg)); - break; - default: - /*nothing*/; - } - } -} - -template -void internal::FixedBuffer::grow(std::size_t) { - FMT_THROW(std::runtime_error("buffer overflow")); -} - -FMT_FUNC Arg internal::FormatterBase::do_get_arg( - unsigned arg_index, const char *&error) { - Arg arg = args_[arg_index]; - switch (arg.type) { - case Arg::NONE: - error = "argument index out of range"; - break; - case Arg::NAMED_ARG: - arg = *static_cast(arg.pointer); - break; - default: - /*nothing*/; - } - return arg; -} - -FMT_FUNC void report_system_error( - int error_code, fmt::StringRef message) FMT_NOEXCEPT { - // 'fmt::' is for bcc32. - report_error(format_system_error, error_code, message); -} - -#if FMT_USE_WINDOWS_H -FMT_FUNC void report_windows_error( - int error_code, fmt::StringRef message) FMT_NOEXCEPT { - // 'fmt::' is for bcc32. - report_error(internal::format_windows_error, error_code, message); -} -#endif - -FMT_FUNC void print(std::FILE *f, CStringRef format_str, ArgList args) { - MemoryWriter w; - w.write(format_str, args); - std::fwrite(w.data(), 1, w.size(), f); -} - -FMT_FUNC void print(CStringRef format_str, ArgList args) { - print(stdout, format_str, args); -} - -FMT_FUNC void print_colored(Color c, CStringRef format, ArgList args) { - char escape[] = "\x1b[30m"; - escape[3] = static_cast('0' + c); - std::fputs(escape, stdout); - print(format, args); - std::fputs(RESET_COLOR, stdout); -} - -template -void printf(BasicWriter &w, BasicCStringRef format, ArgList args); - -FMT_FUNC int fprintf(std::FILE *f, CStringRef format, ArgList args) { - MemoryWriter w; - printf(w, format, args); - std::size_t size = w.size(); - return std::fwrite(w.data(), 1, size, f) < size ? -1 : static_cast(size); -} - -#ifndef FMT_HEADER_ONLY - -template struct internal::BasicData; - -// Explicit instantiations for char. - -template void internal::FixedBuffer::grow(std::size_t); - -template void internal::ArgMap::init(const ArgList &args); - -template void PrintfFormatter::format(CStringRef format); - -template int internal::CharTraits::format_float( - char *buffer, std::size_t size, const char *format, - unsigned width, int precision, double value); - -template int internal::CharTraits::format_float( - char *buffer, std::size_t size, const char *format, - unsigned width, int precision, long double value); - -// Explicit instantiations for wchar_t. - -template void internal::FixedBuffer::grow(std::size_t); - -template void internal::ArgMap::init(const ArgList &args); - -template void PrintfFormatter::format(WCStringRef format); - -template int internal::CharTraits::format_float( - wchar_t *buffer, std::size_t size, const wchar_t *format, - unsigned width, int precision, double value); - -template int internal::CharTraits::format_float( - wchar_t *buffer, std::size_t size, const wchar_t *format, - unsigned width, int precision, long double value); - -#endif // FMT_HEADER_ONLY - -} // namespace fmt - -#ifdef _MSC_VER -# pragma warning(pop) -#endif +/* +Formatting library for C++ + +Copyright (c) 2012 - 2016, Victor Zverovich +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +1. Redistributions of source code must retain the above copyright notice, this +list of conditions and the following disclaimer. +2. Redistributions in binary form must reproduce the above copyright notice, +this list of conditions and the following disclaimer in the documentation +and/or other materials provided with the distribution. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR +ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +// commented out by spdlog +// #include "format.h" +// #include "printf.h" + +#include + +#include +#include +#include +#include +#include +#include // for std::ptrdiff_t + +#if defined(_WIN32) && defined(__MINGW32__) +# include +#endif + +#if FMT_USE_WINDOWS_H +# if defined(NOMINMAX) || defined(FMT_WIN_MINMAX) +# include +# else +# define NOMINMAX +# include +# undef NOMINMAX +# endif +#endif + +using fmt::internal::Arg; + +#if FMT_EXCEPTIONS +# define FMT_TRY try +# define FMT_CATCH(x) catch (x) +#else +# define FMT_TRY if (true) +# define FMT_CATCH(x) if (false) +#endif + +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable: 4127) // conditional expression is constant +# pragma warning(disable: 4702) // unreachable code +// Disable deprecation warning for strerror. The latter is not called but +// MSVC fails to detect it. +# pragma warning(disable: 4996) +#endif + +// Dummy implementations of strerror_r and strerror_s called if corresponding +// system functions are not available. +static inline fmt::internal::Null<> strerror_r(int, char *, ...) { + return fmt::internal::Null<>(); +} +static inline fmt::internal::Null<> strerror_s(char *, std::size_t, ...) { + return fmt::internal::Null<>(); +} + +namespace fmt { + +FMT_FUNC internal::RuntimeError::~RuntimeError() throw() {} +FMT_FUNC FormatError::~FormatError() throw() {} +FMT_FUNC SystemError::~SystemError() throw() {} + +namespace { + +#ifndef _MSC_VER +# define FMT_SNPRINTF snprintf +#else // _MSC_VER +inline int fmt_snprintf(char *buffer, size_t size, const char *format, ...) { + va_list args; + va_start(args, format); + int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args); + va_end(args); + return result; +} +# define FMT_SNPRINTF fmt_snprintf +#endif // _MSC_VER + +#if defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT) +# define FMT_SWPRINTF snwprintf +#else +# define FMT_SWPRINTF swprintf +#endif // defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT) + +const char RESET_COLOR[] = "\x1b[0m"; + +typedef void(*FormatFunc)(Writer &, int, StringRef); + +// Portable thread-safe version of strerror. +// Sets buffer to point to a string describing the error code. +// This can be either a pointer to a string stored in buffer, +// or a pointer to some static immutable string. +// Returns one of the following values: +// 0 - success +// ERANGE - buffer is not large enough to store the error message +// other - failure +// Buffer should be at least of size 1. +int safe_strerror( + int error_code, char *&buffer, std::size_t buffer_size) FMT_NOEXCEPT{ + FMT_ASSERT(buffer != 0 && buffer_size != 0, "invalid buffer"); + + class StrError { + private: + int error_code_; + char *&buffer_; + std::size_t buffer_size_; + + // A noop assignment operator to avoid bogus warnings. + void operator=(const StrError &) {} + + // Handle the result of XSI-compliant version of strerror_r. + int handle(int result) { + // glibc versions before 2.13 return result in errno. + return result == -1 ? errno : result; + } + + // Handle the result of GNU-specific version of strerror_r. + int handle(char *message) { + // If the buffer is full then the message is probably truncated. + if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1) + return ERANGE; + buffer_ = message; + return 0; + } + + // Handle the case when strerror_r is not available. + int handle(internal::Null<>) { + return fallback(strerror_s(buffer_, buffer_size_, error_code_)); + } + + // Fallback to strerror_s when strerror_r is not available. + int fallback(int result) { + // If the buffer is full then the message is probably truncated. + return result == 0 && strlen(buffer_) == buffer_size_ - 1 ? + ERANGE : result; + } + + // Fallback to strerror if strerror_r and strerror_s are not available. + int fallback(internal::Null<>) { + errno = 0; + buffer_ = strerror(error_code_); + return errno; + } + + public: + StrError(int err_code, char *&buf, std::size_t buf_size) + : error_code_(err_code), buffer_(buf), buffer_size_(buf_size) {} + + int run() { + strerror_r(0, 0, ""); // Suppress a warning about unused strerror_r. + return handle(strerror_r(error_code_, buffer_, buffer_size_)); + } + }; + return StrError(error_code, buffer, buffer_size).run(); +} + +void format_error_code(Writer &out, int error_code, + StringRef message) FMT_NOEXCEPT{ + // Report error code making sure that the output fits into + // INLINE_BUFFER_SIZE to avoid dynamic memory allocation and potential + // bad_alloc. + out.clear(); + static const char SEP[] = ": "; + static const char ERROR_STR[] = "error "; + // Subtract 2 to account for terminating null characters in SEP and ERROR_STR. + std::size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2; + typedef internal::IntTraits::MainType MainType; + MainType abs_value = static_cast(error_code); + if (internal::is_negative(error_code)) { + abs_value = 0 - abs_value; + ++error_code_size; + } + error_code_size += internal::count_digits(abs_value); + if (message.size() <= internal::INLINE_BUFFER_SIZE - error_code_size) + out << message << SEP; + out << ERROR_STR << error_code; + assert(out.size() <= internal::INLINE_BUFFER_SIZE); +} + +void report_error(FormatFunc func, int error_code, + StringRef message) FMT_NOEXCEPT{ + MemoryWriter full_message; + func(full_message, error_code, message); + // Use Writer::data instead of Writer::c_str to avoid potential memory + // allocation. + std::fwrite(full_message.data(), full_message.size(), 1, stderr); + std::fputc('\n', stderr); +} +} // namespace + +namespace internal { + +// This method is used to preserve binary compatibility with fmt 3.0. +// It can be removed in 4.0. +FMT_FUNC void format_system_error( + Writer &out, int error_code, StringRef message) FMT_NOEXCEPT{ + fmt::format_system_error(out, error_code, message); +} +} // namespace internal + +FMT_FUNC void SystemError::init( + int err_code, CStringRef format_str, ArgList args) { + error_code_ = err_code; + MemoryWriter w; + format_system_error(w, err_code, format(format_str, args)); + std::runtime_error &base = *this; + base = std::runtime_error(w.str()); +} + +template +int internal::CharTraits::format_float( + char *buffer, std::size_t size, const char *format, + unsigned width, int precision, T value) { + if (width == 0) { + return precision < 0 ? + FMT_SNPRINTF(buffer, size, format, value) : + FMT_SNPRINTF(buffer, size, format, precision, value); + } + return precision < 0 ? + FMT_SNPRINTF(buffer, size, format, width, value) : + FMT_SNPRINTF(buffer, size, format, width, precision, value); +} + +template +int internal::CharTraits::format_float( + wchar_t *buffer, std::size_t size, const wchar_t *format, + unsigned width, int precision, T value) { + if (width == 0) { + return precision < 0 ? + FMT_SWPRINTF(buffer, size, format, value) : + FMT_SWPRINTF(buffer, size, format, precision, value); + } + return precision < 0 ? + FMT_SWPRINTF(buffer, size, format, width, value) : + FMT_SWPRINTF(buffer, size, format, width, precision, value); +} + +template +const char internal::BasicData::DIGITS[] = + "0001020304050607080910111213141516171819" + "2021222324252627282930313233343536373839" + "4041424344454647484950515253545556575859" + "6061626364656667686970717273747576777879" + "8081828384858687888990919293949596979899"; + +#define FMT_POWERS_OF_10(factor) \ + factor * 10, \ + factor * 100, \ + factor * 1000, \ + factor * 10000, \ + factor * 100000, \ + factor * 1000000, \ + factor * 10000000, \ + factor * 100000000, \ + factor * 1000000000 + +template +const uint32_t internal::BasicData::POWERS_OF_10_32[] = { + 0, FMT_POWERS_OF_10(1) +}; + +template +const uint64_t internal::BasicData::POWERS_OF_10_64[] = { + 0, + FMT_POWERS_OF_10(1), + FMT_POWERS_OF_10(ULongLong(1000000000)), + // Multiply several constants instead of using a single long long constant + // to avoid warnings about C++98 not supporting long long. + ULongLong(1000000000) * ULongLong(1000000000) * 10 +}; + +FMT_FUNC void internal::report_unknown_type(char code, const char *type) { + (void)type; + if (std::isprint(static_cast(code))) { + FMT_THROW(FormatError( + format("unknown format code '{}' for {}", code, type))); + } + FMT_THROW(FormatError( + format("unknown format code '\\x{:02x}' for {}", + static_cast(code), type))); +} + +#if FMT_USE_WINDOWS_H + +FMT_FUNC internal::UTF8ToUTF16::UTF8ToUTF16(StringRef s) { + static const char ERROR_MSG[] = "cannot convert string from UTF-8 to UTF-16"; + if (s.size() > INT_MAX) + FMT_THROW(WindowsError(ERROR_INVALID_PARAMETER, ERROR_MSG)); + int s_size = static_cast(s.size()); + int length = MultiByteToWideChar( + CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, 0, 0); + if (length == 0) + FMT_THROW(WindowsError(GetLastError(), ERROR_MSG)); + buffer_.resize(length + 1); + length = MultiByteToWideChar( + CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, &buffer_[0], length); + if (length == 0) + FMT_THROW(WindowsError(GetLastError(), ERROR_MSG)); + buffer_[length] = 0; +} + +FMT_FUNC internal::UTF16ToUTF8::UTF16ToUTF8(WStringRef s) { + if (int error_code = convert(s)) { + FMT_THROW(WindowsError(error_code, + "cannot convert string from UTF-16 to UTF-8")); + } +} + +FMT_FUNC int internal::UTF16ToUTF8::convert(WStringRef s) { + if (s.size() > INT_MAX) + return ERROR_INVALID_PARAMETER; + int s_size = static_cast(s.size()); + int length = WideCharToMultiByte(CP_UTF8, 0, s.data(), s_size, 0, 0, 0, 0); + if (length == 0) + return GetLastError(); + buffer_.resize(length + 1); + length = WideCharToMultiByte( + CP_UTF8, 0, s.data(), s_size, &buffer_[0], length, 0, 0); + if (length == 0) + return GetLastError(); + buffer_[length] = 0; + return 0; +} + +FMT_FUNC void WindowsError::init( + int err_code, CStringRef format_str, ArgList args) { + error_code_ = err_code; + MemoryWriter w; + internal::format_windows_error(w, err_code, format(format_str, args)); + std::runtime_error &base = *this; + base = std::runtime_error(w.str()); +} + +FMT_FUNC void internal::format_windows_error( + Writer &out, int error_code, StringRef message) FMT_NOEXCEPT{ + FMT_TRY{ + MemoryBuffer buffer; + buffer.resize(INLINE_BUFFER_SIZE); + for (;;) { + wchar_t *system_message = &buffer[0]; + int result = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, + 0, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), + system_message, static_cast(buffer.size()), 0); + if (result != 0) { + UTF16ToUTF8 utf8_message; + if (utf8_message.convert(system_message) == ERROR_SUCCESS) { + out << message << ": " << utf8_message; + return; + } + break; + } + if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) + break; // Can't get error message, report error code instead. + buffer.resize(buffer.size() * 2); + } + } FMT_CATCH(...) {} + fmt::format_error_code(out, error_code, message); // 'fmt::' is for bcc32. +} + +#endif // FMT_USE_WINDOWS_H + +FMT_FUNC void format_system_error( + Writer &out, int error_code, StringRef message) FMT_NOEXCEPT{ + FMT_TRY{ + internal::MemoryBuffer buffer; + buffer.resize(internal::INLINE_BUFFER_SIZE); + for (;;) { + char *system_message = &buffer[0]; + int result = safe_strerror(error_code, system_message, buffer.size()); + if (result == 0) { + out << message << ": " << system_message; + return; + } + if (result != ERANGE) + break; // Can't get error message, report error code instead. + buffer.resize(buffer.size() * 2); + } + } FMT_CATCH(...) {} + fmt::format_error_code(out, error_code, message); // 'fmt::' is for bcc32. +} + +template +void internal::ArgMap::init(const ArgList &args) { + if (!map_.empty()) + return; + typedef internal::NamedArg NamedArg; + const NamedArg *named_arg = 0; + bool use_values = + args.type(ArgList::MAX_PACKED_ARGS - 1) == internal::Arg::NONE; + if (use_values) { + for (unsigned i = 0;/*nothing*/; ++i) { + internal::Arg::Type arg_type = args.type(i); + switch (arg_type) { + case internal::Arg::NONE: + return; + case internal::Arg::NAMED_ARG: + named_arg = static_cast(args.values_[i].pointer); + map_.push_back(Pair(named_arg->name, *named_arg)); + break; + default: + /*nothing*/ + ; + } + } + return; + } + for (unsigned i = 0; i != ArgList::MAX_PACKED_ARGS; ++i) { + internal::Arg::Type arg_type = args.type(i); + if (arg_type == internal::Arg::NAMED_ARG) { + named_arg = static_cast(args.args_[i].pointer); + map_.push_back(Pair(named_arg->name, *named_arg)); + } + } + for (unsigned i = ArgList::MAX_PACKED_ARGS;/*nothing*/; ++i) { + switch (args.args_[i].type) { + case internal::Arg::NONE: + return; + case internal::Arg::NAMED_ARG: + named_arg = static_cast(args.args_[i].pointer); + map_.push_back(Pair(named_arg->name, *named_arg)); + break; + default: + /*nothing*/ + ; + } + } +} + +template +void internal::FixedBuffer::grow(std::size_t) { + FMT_THROW(std::runtime_error("buffer overflow")); +} + +FMT_FUNC Arg internal::FormatterBase::do_get_arg( + unsigned arg_index, const char *&error) { + Arg arg = args_[arg_index]; + switch (arg.type) { + case Arg::NONE: + error = "argument index out of range"; + break; + case Arg::NAMED_ARG: + arg = *static_cast(arg.pointer); + break; + default: + /*nothing*/ + ; + } + return arg; +} + +FMT_FUNC void report_system_error( + int error_code, fmt::StringRef message) FMT_NOEXCEPT{ + // 'fmt::' is for bcc32. + report_error(format_system_error, error_code, message); +} + +#if FMT_USE_WINDOWS_H +FMT_FUNC void report_windows_error( + int error_code, fmt::StringRef message) FMT_NOEXCEPT{ + // 'fmt::' is for bcc32. + report_error(internal::format_windows_error, error_code, message); +} +#endif + +FMT_FUNC void print(std::FILE *f, CStringRef format_str, ArgList args) { + MemoryWriter w; + w.write(format_str, args); + std::fwrite(w.data(), 1, w.size(), f); +} + +FMT_FUNC void print(CStringRef format_str, ArgList args) { + print(stdout, format_str, args); +} + +FMT_FUNC void print_colored(Color c, CStringRef format, ArgList args) { + char escape[] = "\x1b[30m"; + escape[3] = static_cast('0' + c); + std::fputs(escape, stdout); + print(format, args); + std::fputs(RESET_COLOR, stdout); +} + +template +void printf(BasicWriter &w, BasicCStringRef format, ArgList args); + +FMT_FUNC int fprintf(std::FILE *f, CStringRef format, ArgList args) { + MemoryWriter w; + printf(w, format, args); + std::size_t size = w.size(); + return std::fwrite(w.data(), 1, size, f) < size ? -1 : static_cast(size); +} + +#ifndef FMT_HEADER_ONLY + +template struct internal::BasicData; + +// Explicit instantiations for char. + +template void internal::FixedBuffer::grow(std::size_t); + +template void internal::ArgMap::init(const ArgList &args); + +template void PrintfFormatter::format(CStringRef format); + +template int internal::CharTraits::format_float( + char *buffer, std::size_t size, const char *format, + unsigned width, int precision, double value); + +template int internal::CharTraits::format_float( + char *buffer, std::size_t size, const char *format, + unsigned width, int precision, long double value); + +// Explicit instantiations for wchar_t. + +template void internal::FixedBuffer::grow(std::size_t); + +template void internal::ArgMap::init(const ArgList &args); + +template void PrintfFormatter::format(WCStringRef format); + +template int internal::CharTraits::format_float( + wchar_t *buffer, std::size_t size, const wchar_t *format, + unsigned width, int precision, double value); + +template int internal::CharTraits::format_float( + wchar_t *buffer, std::size_t size, const wchar_t *format, + unsigned width, int precision, long double value); + +#endif // FMT_HEADER_ONLY + +} // namespace fmt + +#ifdef _MSC_VER +# pragma warning(pop) +#endif \ No newline at end of file diff --git a/include/spdlog/fmt/bundled/format.h b/include/spdlog/fmt/bundled/format.h index 294a686f..0309bca5 100644 --- a/include/spdlog/fmt/bundled/format.h +++ b/include/spdlog/fmt/bundled/format.h @@ -1,4455 +1,4069 @@ -/* - Formatting library for C++ - - Copyright (c) 2012 - 2016, Victor Zverovich - All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - - 1. Redistributions of source code must retain the above copyright notice, this - list of conditions and the following disclaimer. - 2. Redistributions in binary form must reproduce the above copyright notice, - this list of conditions and the following disclaimer in the documentation - and/or other materials provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND - ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR - ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef FMT_FORMAT_H_ -#define FMT_FORMAT_H_ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#ifdef _SECURE_SCL -# define FMT_SECURE_SCL _SECURE_SCL -#else -# define FMT_SECURE_SCL 0 -#endif - -#if FMT_SECURE_SCL -# include -#endif - -#ifdef _MSC_VER -# define FMT_MSC_VER _MSC_VER -#else -# define FMT_MSC_VER 0 -#endif - -#if FMT_MSC_VER && FMT_MSC_VER <= 1500 -typedef unsigned __int32 uint32_t; -typedef unsigned __int64 uint64_t; -typedef __int64 intmax_t; -#else -#include -#endif - -#if !defined(FMT_HEADER_ONLY) && defined(_WIN32) -# ifdef FMT_EXPORT -# define FMT_API __declspec(dllexport) -# elif defined(FMT_SHARED) -# define FMT_API __declspec(dllimport) -# endif -#endif -#ifndef FMT_API -# define FMT_API -#endif - -#ifdef __GNUC__ -# define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) -# define FMT_GCC_EXTENSION __extension__ -# if FMT_GCC_VERSION >= 406 -# pragma GCC diagnostic push -// Disable the warning about "long long" which is sometimes reported even -// when using __extension__. -# pragma GCC diagnostic ignored "-Wlong-long" -// Disable the warning about declaration shadowing because it affects too -// many valid cases. -# pragma GCC diagnostic ignored "-Wshadow" -// Disable the warning about implicit conversions that may change the sign of -// an integer; silencing it otherwise would require many explicit casts. -# pragma GCC diagnostic ignored "-Wsign-conversion" -# endif -# if __cplusplus >= 201103L || defined __GXX_EXPERIMENTAL_CXX0X__ -# define FMT_HAS_GXX_CXX11 1 -# endif -#else -# define FMT_GCC_EXTENSION -#endif - -#if defined(__INTEL_COMPILER) -# define FMT_ICC_VERSION __INTEL_COMPILER -#elif defined(__ICL) -# define FMT_ICC_VERSION __ICL -#endif - -#if defined(__clang__) && !defined(FMT_ICC_VERSION) -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wdocumentation-unknown-command" -# pragma clang diagnostic ignored "-Wpadded" -#endif - -#ifdef __GNUC_LIBSTD__ -# define FMT_GNUC_LIBSTD_VERSION (__GNUC_LIBSTD__ * 100 + __GNUC_LIBSTD_MINOR__) -#endif - -#ifdef __has_feature -# define FMT_HAS_FEATURE(x) __has_feature(x) -#else -# define FMT_HAS_FEATURE(x) 0 -#endif - -#ifdef __has_builtin -# define FMT_HAS_BUILTIN(x) __has_builtin(x) -#else -# define FMT_HAS_BUILTIN(x) 0 -#endif - -#ifdef __has_cpp_attribute -# define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x) -#else -# define FMT_HAS_CPP_ATTRIBUTE(x) 0 -#endif - -#ifndef FMT_USE_VARIADIC_TEMPLATES -// Variadic templates are available in GCC since version 4.4 -// (http://gcc.gnu.org/projects/cxx0x.html) and in Visual C++ -// since version 2013. -# define FMT_USE_VARIADIC_TEMPLATES \ - (FMT_HAS_FEATURE(cxx_variadic_templates) || \ - (FMT_GCC_VERSION >= 404 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1800) -#endif - -#ifndef FMT_USE_RVALUE_REFERENCES -// Don't use rvalue references when compiling with clang and an old libstdc++ -// as the latter doesn't provide std::move. -# if defined(FMT_GNUC_LIBSTD_VERSION) && FMT_GNUC_LIBSTD_VERSION <= 402 -# define FMT_USE_RVALUE_REFERENCES 0 -# else -# define FMT_USE_RVALUE_REFERENCES \ - (FMT_HAS_FEATURE(cxx_rvalue_references) || \ - (FMT_GCC_VERSION >= 403 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1600) -# endif -#endif - -#if FMT_USE_RVALUE_REFERENCES -# include // for std::move -#endif - -// Check if exceptions are disabled. -#if defined(__GNUC__) && !defined(__EXCEPTIONS) -# define FMT_EXCEPTIONS 0 -#endif -#if FMT_MSC_VER && !_HAS_EXCEPTIONS -# define FMT_EXCEPTIONS 0 -#endif -#ifndef FMT_EXCEPTIONS -# define FMT_EXCEPTIONS 1 -#endif - -#ifndef FMT_THROW -# if FMT_EXCEPTIONS -# define FMT_THROW(x) throw x -# else -# define FMT_THROW(x) assert(false) -# endif -#endif - -// Define FMT_USE_NOEXCEPT to make fmt use noexcept (C++11 feature). -#ifndef FMT_USE_NOEXCEPT -# define FMT_USE_NOEXCEPT 0 -#endif - -#ifndef FMT_NOEXCEPT -# if FMT_EXCEPTIONS -# if FMT_USE_NOEXCEPT || FMT_HAS_FEATURE(cxx_noexcept) || \ - (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || \ - FMT_MSC_VER >= 1900 -# define FMT_NOEXCEPT noexcept -# else -# define FMT_NOEXCEPT throw() -# endif -# else -# define FMT_NOEXCEPT -# endif -#endif - -// A macro to disallow the copy constructor and operator= functions -// This should be used in the private: declarations for a class -#ifndef FMT_USE_DELETED_FUNCTIONS -# define FMT_USE_DELETED_FUNCTIONS 0 -#endif - -#if FMT_USE_DELETED_FUNCTIONS || FMT_HAS_FEATURE(cxx_deleted_functions) || \ - (FMT_GCC_VERSION >= 404 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1800 -# define FMT_DELETED_OR_UNDEFINED = delete -# define FMT_DISALLOW_COPY_AND_ASSIGN(TypeName) \ - TypeName(const TypeName&) = delete; \ - TypeName& operator=(const TypeName&) = delete -#else -# define FMT_DELETED_OR_UNDEFINED -# define FMT_DISALLOW_COPY_AND_ASSIGN(TypeName) \ - TypeName(const TypeName&); \ - TypeName& operator=(const TypeName&) -#endif - -#ifndef FMT_USE_USER_DEFINED_LITERALS -// All compilers which support UDLs also support variadic templates. This -// makes the fmt::literals implementation easier. However, an explicit check -// for variadic templates is added here just in case. -// For Intel's compiler both it and the system gcc/msc must support UDLs. -# define FMT_USE_USER_DEFINED_LITERALS \ - FMT_USE_VARIADIC_TEMPLATES && FMT_USE_RVALUE_REFERENCES && \ - (FMT_HAS_FEATURE(cxx_user_literals) || \ - (FMT_GCC_VERSION >= 407 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900) && \ - (!defined(FMT_ICC_VERSION) || FMT_ICC_VERSION >= 1500) -#endif - -#ifndef FMT_ASSERT -# define FMT_ASSERT(condition, message) assert((condition) && message) -#endif - -#if FMT_GCC_VERSION >= 400 || FMT_HAS_BUILTIN(__builtin_clz) -# define FMT_BUILTIN_CLZ(n) __builtin_clz(n) -#endif - -#if FMT_GCC_VERSION >= 400 || FMT_HAS_BUILTIN(__builtin_clzll) -# define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n) -#endif - -// Some compilers masquerade as both MSVC and GCC-likes or -// otherwise support __builtin_clz and __builtin_clzll, so -// only define FMT_BUILTIN_CLZ using the MSVC intrinsics -// if the clz and clzll builtins are not available. -#if FMT_MSC_VER && !defined(FMT_BUILTIN_CLZLL) -# include // _BitScanReverse, _BitScanReverse64 - -namespace fmt -{ -namespace internal -{ -# pragma intrinsic(_BitScanReverse) -inline uint32_t clz(uint32_t x) -{ - unsigned long r = 0; - _BitScanReverse(&r, x); - - assert(x != 0); - // Static analysis complains about using uninitialized data - // "r", but the only way that can happen is if "x" is 0, - // which the callers guarantee to not happen. -# pragma warning(suppress: 6102) - return 31 - r; -} -# define FMT_BUILTIN_CLZ(n) fmt::internal::clz(n) - -# ifdef _WIN64 -# pragma intrinsic(_BitScanReverse64) -# endif - -inline uint32_t clzll(uint64_t x) -{ - unsigned long r = 0; -# ifdef _WIN64 - _BitScanReverse64(&r, x); -# else - // Scan the high 32 bits. - if (_BitScanReverse(&r, static_cast(x >> 32))) - return 63 - (r + 32); - - // Scan the low 32 bits. - _BitScanReverse(&r, static_cast(x)); -# endif - - assert(x != 0); - // Static analysis complains about using uninitialized data - // "r", but the only way that can happen is if "x" is 0, - // which the callers guarantee to not happen. -# pragma warning(suppress: 6102) - return 63 - r; -} -# define FMT_BUILTIN_CLZLL(n) fmt::internal::clzll(n) -} -} -#endif - -namespace fmt -{ -namespace internal -{ -struct DummyInt -{ - int data[2]; - operator int() const - { - return 0; - } -}; -typedef std::numeric_limits FPUtil; - -// Dummy implementations of system functions such as signbit and ecvt called -// if the latter are not available. -inline DummyInt signbit(...) -{ - return DummyInt(); -} -inline DummyInt _ecvt_s(...) -{ - return DummyInt(); -} -inline DummyInt isinf(...) -{ - return DummyInt(); -} -inline DummyInt _finite(...) -{ - return DummyInt(); -} -inline DummyInt isnan(...) -{ - return DummyInt(); -} -inline DummyInt _isnan(...) -{ - return DummyInt(); -} - -// A helper function to suppress bogus "conditional expression is constant" -// warnings. -template -inline T const_check(T value) -{ - return value; -} -} -} // namespace fmt - -namespace std -{ -// Standard permits specialization of std::numeric_limits. This specialization -// is used to resolve ambiguity between isinf and std::isinf in glibc: -// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48891 -// and the same for isnan and signbit. -template <> -class numeric_limits : - public std::numeric_limits -{ -public: - // Portable version of isinf. - template - static bool isinfinity(T x) - { - using namespace fmt::internal; - // The resolution "priority" is: - // isinf macro > std::isinf > ::isinf > fmt::internal::isinf - if (const_check(sizeof(isinf(x)) == sizeof(bool) || - sizeof(isinf(x)) == sizeof(int))) - { - return isinf(x) != 0; - } - return !_finite(static_cast(x)); - } - - // Portable version of isnan. - template - static bool isnotanumber(T x) - { - using namespace fmt::internal; - if (const_check(sizeof(isnan(x)) == sizeof(bool) || - sizeof(isnan(x)) == sizeof(int))) - { - return isnan(x) != 0; - } - return _isnan(static_cast(x)) != 0; - } - - // Portable version of signbit. - static bool isnegative(double x) - { - using namespace fmt::internal; - if (const_check(sizeof(signbit(x)) == sizeof(int))) - return signbit(x) != 0; - if (x < 0) return true; - if (!isnotanumber(x)) return false; - int dec = 0, sign = 0; - char buffer[2]; // The buffer size must be >= 2 or _ecvt_s will fail. - _ecvt_s(buffer, sizeof(buffer), x, 0, &dec, &sign); - return sign != 0; - } -}; -} // namespace std - -namespace fmt -{ - -// Fix the warning about long long on older versions of GCC -// that don't support the diagnostic pragma. -FMT_GCC_EXTENSION typedef long long LongLong; -FMT_GCC_EXTENSION typedef unsigned long long ULongLong; - -#if FMT_USE_RVALUE_REFERENCES -using std::move; -#endif - -template -class BasicWriter; - -typedef BasicWriter Writer; -typedef BasicWriter WWriter; - -template -class ArgFormatter; - -template -class BasicPrintfArgFormatter; - -template > -class BasicFormatter; - -/** - \rst - A string reference. It can be constructed from a C string or ``std::string``. - - You can use one of the following typedefs for common character types: - - +------------+-------------------------+ - | Type | Definition | - +============+=========================+ - | StringRef | BasicStringRef | - +------------+-------------------------+ - | WStringRef | BasicStringRef | - +------------+-------------------------+ - - This class is most useful as a parameter type to allow passing - different types of strings to a function, for example:: - - template - std::string format(StringRef format_str, const Args & ... args); - - format("{}", 42); - format(std::string("{}"), 42); - \endrst - */ -template -class BasicStringRef -{ -private: - const Char *data_; - std::size_t size_; - -public: - /** Constructs a string reference object from a C string and a size. */ - BasicStringRef(const Char *s, std::size_t size) : data_(s), size_(size) {} - - /** - \rst - Constructs a string reference object from a C string computing - the size with ``std::char_traits::length``. - \endrst - */ - BasicStringRef(const Char *s) - : data_(s), size_(std::char_traits::length(s)) {} - - /** - \rst - Constructs a string reference from an ``std::string`` object. - \endrst - */ - BasicStringRef(const std::basic_string &s) - : data_(s.c_str()), size_(s.size()) {} - - /** - \rst - Converts a string reference to an ``std::string`` object. - \endrst - */ - std::basic_string to_string() const - { - return std::basic_string(data_, size_); - } - - /** Returns a pointer to the string data. */ - const Char *data() const - { - return data_; - } - - /** Returns the string size. */ - std::size_t size() const - { - return size_; - } - - // Lexicographically compare this string reference to other. - int compare(BasicStringRef other) const - { - std::size_t size = size_ < other.size_ ? size_ : other.size_; - int result = std::char_traits::compare(data_, other.data_, size); - if (result == 0) - result = size_ == other.size_ ? 0 : (size_ < other.size_ ? -1 : 1); - return result; - } - - friend bool operator==(BasicStringRef lhs, BasicStringRef rhs) - { - return lhs.compare(rhs) == 0; - } - friend bool operator!=(BasicStringRef lhs, BasicStringRef rhs) - { - return lhs.compare(rhs) != 0; - } - friend bool operator<(BasicStringRef lhs, BasicStringRef rhs) - { - return lhs.compare(rhs) < 0; - } - friend bool operator<=(BasicStringRef lhs, BasicStringRef rhs) - { - return lhs.compare(rhs) <= 0; - } - friend bool operator>(BasicStringRef lhs, BasicStringRef rhs) - { - return lhs.compare(rhs) > 0; - } - friend bool operator>=(BasicStringRef lhs, BasicStringRef rhs) - { - return lhs.compare(rhs) >= 0; - } -}; - -typedef BasicStringRef StringRef; -typedef BasicStringRef WStringRef; - -/** - \rst - A reference to a null terminated string. It can be constructed from a C - string or ``std::string``. - - You can use one of the following typedefs for common character types: - - +-------------+--------------------------+ - | Type | Definition | - +=============+==========================+ - | CStringRef | BasicCStringRef | - +-------------+--------------------------+ - | WCStringRef | BasicCStringRef | - +-------------+--------------------------+ - - This class is most useful as a parameter type to allow passing - different types of strings to a function, for example:: - - template - std::string format(CStringRef format_str, const Args & ... args); - - format("{}", 42); - format(std::string("{}"), 42); - \endrst - */ -template -class BasicCStringRef -{ -private: - const Char *data_; - -public: - /** Constructs a string reference object from a C string. */ - BasicCStringRef(const Char *s) : data_(s) {} - - /** - \rst - Constructs a string reference from an ``std::string`` object. - \endrst - */ - BasicCStringRef(const std::basic_string &s) : data_(s.c_str()) {} - - /** Returns the pointer to a C string. */ - const Char *c_str() const - { - return data_; - } -}; - -typedef BasicCStringRef CStringRef; -typedef BasicCStringRef WCStringRef; - -/** A formatting error such as invalid format string. */ -class FormatError : public std::runtime_error -{ -public: - explicit FormatError(CStringRef message) - : std::runtime_error(message.c_str()) {} - ~FormatError() throw(); -}; - -namespace internal -{ - -// MakeUnsigned::Type gives an unsigned type corresponding to integer type T. -template -struct MakeUnsigned -{ - typedef T Type; -}; - -#define FMT_SPECIALIZE_MAKE_UNSIGNED(T, U) \ - template <> \ - struct MakeUnsigned { typedef U Type; } - -FMT_SPECIALIZE_MAKE_UNSIGNED(char, unsigned char); -FMT_SPECIALIZE_MAKE_UNSIGNED(signed char, unsigned char); -FMT_SPECIALIZE_MAKE_UNSIGNED(short, unsigned short); -FMT_SPECIALIZE_MAKE_UNSIGNED(int, unsigned); -FMT_SPECIALIZE_MAKE_UNSIGNED(long, unsigned long); -FMT_SPECIALIZE_MAKE_UNSIGNED(LongLong, ULongLong); - -// Casts nonnegative integer to unsigned. -template -inline typename MakeUnsigned::Type to_unsigned(Int value) -{ - FMT_ASSERT(value >= 0, "negative value"); - return static_cast::Type>(value); -} - -// The number of characters to store in the MemoryBuffer object itself -// to avoid dynamic memory allocation. -enum { INLINE_BUFFER_SIZE = 500 }; - -#if FMT_SECURE_SCL -// Use checked iterator to avoid warnings on MSVC. -template -inline stdext::checked_array_iterator make_ptr(T *ptr, std::size_t size) -{ - return stdext::checked_array_iterator(ptr, size); -} -#else -template -inline T *make_ptr(T *ptr, std::size_t) -{ - return ptr; -} -#endif -} // namespace internal - -/** - \rst - A buffer supporting a subset of ``std::vector``'s operations. - \endrst - */ -template -class Buffer -{ -private: - FMT_DISALLOW_COPY_AND_ASSIGN(Buffer); - -protected: - T *ptr_; - std::size_t size_; - std::size_t capacity_; - - Buffer(T *ptr = 0, std::size_t capacity = 0) - : ptr_(ptr), size_(0), capacity_(capacity) {} - - /** - \rst - Increases the buffer capacity to hold at least *size* elements updating - ``ptr_`` and ``capacity_``. - \endrst - */ - virtual void grow(std::size_t size) = 0; - -public: - virtual ~Buffer() {} - - /** Returns the size of this buffer. */ - std::size_t size() const - { - return size_; - } - - /** Returns the capacity of this buffer. */ - std::size_t capacity() const - { - return capacity_; - } - - /** - Resizes the buffer. If T is a POD type new elements may not be initialized. - */ - void resize(std::size_t new_size) - { - if (new_size > capacity_) - grow(new_size); - size_ = new_size; - } - - /** - \rst - Reserves space to store at least *capacity* elements. - \endrst - */ - void reserve(std::size_t capacity) - { - if (capacity > capacity_) - grow(capacity); - } - - void clear() FMT_NOEXCEPT { size_ = 0; } - - void push_back(const T &value) - { - if (size_ == capacity_) - grow(size_ + 1); - ptr_[size_++] = value; - } - - /** Appends data to the end of the buffer. */ - template - void append(const U *begin, const U *end); - - T &operator[](std::size_t index) - { - return ptr_[index]; - } - const T &operator[](std::size_t index) const - { - return ptr_[index]; - } -}; - -template -template -void Buffer::append(const U *begin, const U *end) -{ - std::size_t new_size = size_ + internal::to_unsigned(end - begin); - if (new_size > capacity_) - grow(new_size); - std::uninitialized_copy(begin, end, - internal::make_ptr(ptr_, capacity_) + size_); - size_ = new_size; -} - -namespace internal -{ - -// A memory buffer for trivially copyable/constructible types with the first -// SIZE elements stored in the object itself. -template > -class MemoryBuffer : private Allocator, public Buffer -{ -private: - T data_[SIZE]; - - // Deallocate memory allocated by the buffer. - void deallocate() - { - if (this->ptr_ != data_) Allocator::deallocate(this->ptr_, this->capacity_); - } - -protected: - void grow(std::size_t size); - -public: - explicit MemoryBuffer(const Allocator &alloc = Allocator()) - : Allocator(alloc), Buffer(data_, SIZE) {} - ~MemoryBuffer() - { - deallocate(); - } - -#if FMT_USE_RVALUE_REFERENCES -private: - // Move data from other to this buffer. - void move(MemoryBuffer &other) - { - Allocator &this_alloc = *this, &other_alloc = other; - this_alloc = std::move(other_alloc); - this->size_ = other.size_; - this->capacity_ = other.capacity_; - if (other.ptr_ == other.data_) - { - this->ptr_ = data_; - std::uninitialized_copy(other.data_, other.data_ + this->size_, - make_ptr(data_, this->capacity_)); - } - else - { - this->ptr_ = other.ptr_; - // Set pointer to the inline array so that delete is not called - // when deallocating. - other.ptr_ = other.data_; - } - } - -public: - MemoryBuffer(MemoryBuffer &&other) - { - move(other); - } - - MemoryBuffer &operator=(MemoryBuffer &&other) - { - assert(this != &other); - deallocate(); - move(other); - return *this; - } -#endif - - // Returns a copy of the allocator associated with this buffer. - Allocator get_allocator() const - { - return *this; - } -}; - -template -void MemoryBuffer::grow(std::size_t size) -{ - std::size_t new_capacity = this->capacity_ + this->capacity_ / 2; - if (size > new_capacity) - new_capacity = size; - T *new_ptr = this->allocate(new_capacity); - // The following code doesn't throw, so the raw pointer above doesn't leak. - std::uninitialized_copy(this->ptr_, this->ptr_ + this->size_, - make_ptr(new_ptr, new_capacity)); - std::size_t old_capacity = this->capacity_; - T *old_ptr = this->ptr_; - this->capacity_ = new_capacity; - this->ptr_ = new_ptr; - // deallocate may throw (at least in principle), but it doesn't matter since - // the buffer already uses the new storage and will deallocate it in case - // of exception. - if (old_ptr != data_) - Allocator::deallocate(old_ptr, old_capacity); -} - -// A fixed-size buffer. -template -class FixedBuffer : public fmt::Buffer -{ -public: - FixedBuffer(Char *array, std::size_t size) : fmt::Buffer(array, size) {} - -protected: - FMT_API void grow(std::size_t size); -}; - -template -class BasicCharTraits -{ -public: -#if FMT_SECURE_SCL - typedef stdext::checked_array_iterator CharPtr; -#else - typedef Char *CharPtr; -#endif - static Char cast(int value) - { - return static_cast(value); - } -}; - -template -class CharTraits; - -template <> -class CharTraits : public BasicCharTraits -{ -private: - // Conversion from wchar_t to char is not allowed. - static char convert(wchar_t); - -public: - static char convert(char value) - { - return value; - } - - // Formats a floating-point number. - template - FMT_API static int format_float(char *buffer, std::size_t size, - const char *format, unsigned width, int precision, T value); -}; - -template <> -class CharTraits : public BasicCharTraits -{ -public: - static wchar_t convert(char value) - { - return value; - } - static wchar_t convert(wchar_t value) - { - return value; - } - - template - FMT_API static int format_float(wchar_t *buffer, std::size_t size, - const wchar_t *format, unsigned width, int precision, T value); -}; - -// Checks if a number is negative - used to avoid warnings. -template -struct SignChecker -{ - template - static bool is_negative(T value) - { - return value < 0; - } -}; - -template <> -struct SignChecker -{ - template - static bool is_negative(T) - { - return false; - } -}; - -// Returns true if value is negative, false otherwise. -// Same as (value < 0) but doesn't produce warnings if T is an unsigned type. -template -inline bool is_negative(T value) -{ - return SignChecker::is_signed>::is_negative(value); -} - -// Selects uint32_t if FitsIn32Bits is true, uint64_t otherwise. -template -struct TypeSelector -{ - typedef uint32_t Type; -}; - -template <> -struct TypeSelector -{ - typedef uint64_t Type; -}; - -template -struct IntTraits -{ - // Smallest of uint32_t and uint64_t that is large enough to represent - // all values of T. - typedef typename - TypeSelector::digits <= 32>::Type MainType; -}; - -FMT_API void report_unknown_type(char code, const char *type); - -// Static data is placed in this class template to allow header-only -// configuration. -template -struct FMT_API BasicData -{ - static const uint32_t POWERS_OF_10_32[]; - static const uint64_t POWERS_OF_10_64[]; - static const char DIGITS[]; -}; - -#ifndef FMT_USE_EXTERN_TEMPLATES -// Clang doesn't have a feature check for extern templates so we check -// for variadic templates which were introduced in the same version. -# define FMT_USE_EXTERN_TEMPLATES (__clang__ && FMT_USE_VARIADIC_TEMPLATES) -#endif - -#if FMT_USE_EXTERN_TEMPLATES && !defined(FMT_HEADER_ONLY) -extern template struct BasicData; -#endif - -typedef BasicData<> Data; - -#ifdef FMT_BUILTIN_CLZLL -// Returns the number of decimal digits in n. Leading zeros are not counted -// except for n == 0 in which case count_digits returns 1. -inline unsigned count_digits(uint64_t n) -{ - // Based on http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog10 - // and the benchmark https://github.com/localvoid/cxx-benchmark-count-digits. - int t = (64 - FMT_BUILTIN_CLZLL(n | 1)) * 1233 >> 12; - return to_unsigned(t) - (n < Data::POWERS_OF_10_64[t]) + 1; -} -#else -// Fallback version of count_digits used when __builtin_clz is not available. -inline unsigned count_digits(uint64_t n) -{ - unsigned count = 1; - for (;;) - { - // Integer division is slow so do it for a group of four digits instead - // of for every digit. The idea comes from the talk by Alexandrescu - // "Three Optimization Tips for C++". See speed-test for a comparison. - if (n < 10) return count; - if (n < 100) return count + 1; - if (n < 1000) return count + 2; - if (n < 10000) return count + 3; - n /= 10000u; - count += 4; - } -} -#endif - -#ifdef FMT_BUILTIN_CLZ -// Optional version of count_digits for better performance on 32-bit platforms. -inline unsigned count_digits(uint32_t n) -{ - int t = (32 - FMT_BUILTIN_CLZ(n | 1)) * 1233 >> 12; - return to_unsigned(t) - (n < Data::POWERS_OF_10_32[t]) + 1; -} -#endif - -// A functor that doesn't add a thousands separator. -struct NoThousandsSep -{ - template - void operator()(Char *) {} -}; - -// A functor that adds a thousands separator. -class ThousandsSep -{ -private: - fmt::StringRef sep_; - - // Index of a decimal digit with the least significant digit having index 0. - unsigned digit_index_; - -public: - explicit ThousandsSep(fmt::StringRef sep) : sep_(sep), digit_index_(0) {} - - template - void operator()(Char *&buffer) - { - if (++digit_index_ % 3 != 0) - return; - buffer -= sep_.size(); - std::uninitialized_copy(sep_.data(), sep_.data() + sep_.size(), - internal::make_ptr(buffer, sep_.size())); - } -}; - -// Formats a decimal unsigned integer value writing into buffer. -// thousands_sep is a functor that is called after writing each char to -// add a thousands separator if necessary. -template -inline void format_decimal(Char *buffer, UInt value, unsigned num_digits, - ThousandsSep thousands_sep) -{ - buffer += num_digits; - while (value >= 100) - { - // Integer division is slow so do it for a group of two digits instead - // of for every digit. The idea comes from the talk by Alexandrescu - // "Three Optimization Tips for C++". See speed-test for a comparison. - unsigned index = static_cast((value % 100) * 2); - value /= 100; - *--buffer = Data::DIGITS[index + 1]; - thousands_sep(buffer); - *--buffer = Data::DIGITS[index]; - thousands_sep(buffer); - } - if (value < 10) - { - *--buffer = static_cast('0' + value); - return; - } - unsigned index = static_cast(value * 2); - *--buffer = Data::DIGITS[index + 1]; - thousands_sep(buffer); - *--buffer = Data::DIGITS[index]; -} - -template -inline void format_decimal(Char *buffer, UInt value, unsigned num_digits) -{ - return format_decimal(buffer, value, num_digits, NoThousandsSep()); -} - -#ifndef _WIN32 -# define FMT_USE_WINDOWS_H 0 -#elif !defined(FMT_USE_WINDOWS_H) -# define FMT_USE_WINDOWS_H 1 -#endif - -// Define FMT_USE_WINDOWS_H to 0 to disable use of windows.h. -// All the functionality that relies on it will be disabled too. -#if FMT_USE_WINDOWS_H -// A converter from UTF-8 to UTF-16. -// It is only provided for Windows since other systems support UTF-8 natively. -class UTF8ToUTF16 -{ -private: - MemoryBuffer buffer_; - -public: - FMT_API explicit UTF8ToUTF16(StringRef s); - operator WStringRef() const - { - return WStringRef(&buffer_[0], size()); - } - size_t size() const - { - return buffer_.size() - 1; - } - const wchar_t *c_str() const - { - return &buffer_[0]; - } - std::wstring str() const - { - return std::wstring(&buffer_[0], size()); - } -}; - -// A converter from UTF-16 to UTF-8. -// It is only provided for Windows since other systems support UTF-8 natively. -class UTF16ToUTF8 -{ -private: - MemoryBuffer buffer_; - -public: - UTF16ToUTF8() {} - FMT_API explicit UTF16ToUTF8(WStringRef s); - operator StringRef() const - { - return StringRef(&buffer_[0], size()); - } - size_t size() const - { - return buffer_.size() - 1; - } - const char *c_str() const - { - return &buffer_[0]; - } - std::string str() const - { - return std::string(&buffer_[0], size()); - } - - // Performs conversion returning a system error code instead of - // throwing exception on conversion error. This method may still throw - // in case of memory allocation error. - FMT_API int convert(WStringRef s); -}; - -FMT_API void format_windows_error(fmt::Writer &out, int error_code, - fmt::StringRef message) FMT_NOEXCEPT; -#endif - -// A formatting argument value. -struct Value -{ - template - struct StringValue - { - const Char *value; - std::size_t size; - }; - - typedef void (*FormatFunc)( - void *formatter, const void *arg, void *format_str_ptr); - - struct CustomValue - { - const void *value; - FormatFunc format; - }; - - union - { - int int_value; - unsigned uint_value; - LongLong long_long_value; - ULongLong ulong_long_value; - double double_value; - long double long_double_value; - const void *pointer; - StringValue string; - StringValue sstring; - StringValue ustring; - StringValue wstring; - CustomValue custom; - }; - - enum Type - { - NONE, NAMED_ARG, - // Integer types should go first, - INT, UINT, LONG_LONG, ULONG_LONG, BOOL, CHAR, LAST_INTEGER_TYPE = CHAR, - // followed by floating-point types. - DOUBLE, LONG_DOUBLE, LAST_NUMERIC_TYPE = LONG_DOUBLE, - CSTRING, STRING, WSTRING, POINTER, CUSTOM - }; -}; - -// A formatting argument. It is a trivially copyable/constructible type to -// allow storage in internal::MemoryBuffer. -struct Arg : Value -{ - Type type; -}; - -template -struct NamedArg; - -template -struct Null {}; - -// A helper class template to enable or disable overloads taking wide -// characters and strings in MakeValue. -template -struct WCharHelper -{ - typedef Null Supported; - typedef T Unsupported; -}; - -template -struct WCharHelper -{ - typedef T Supported; - typedef Null Unsupported; -}; - -typedef char Yes[1]; -typedef char No[2]; - -template -T &get(); - -// These are non-members to workaround an overload resolution bug in bcc32. -Yes &convert(fmt::ULongLong); -No &convert(...); - -template -struct ConvertToIntImpl -{ - enum { value = ENABLE_CONVERSION }; -}; - -template -struct ConvertToIntImpl2 -{ - enum { value = false }; -}; - -template -struct ConvertToIntImpl2 -{ - enum - { - // Don't convert numeric types. - value = ConvertToIntImpl::is_specialized>::value - }; -}; - -template -struct ConvertToInt -{ - enum { enable_conversion = sizeof(convert(get())) == sizeof(Yes) }; - enum { value = ConvertToIntImpl2::value }; -}; - -#define FMT_DISABLE_CONVERSION_TO_INT(Type) \ - template <> \ - struct ConvertToInt { enum { value = 0 }; } - -// Silence warnings about convering float to int. -FMT_DISABLE_CONVERSION_TO_INT(float); -FMT_DISABLE_CONVERSION_TO_INT(double); -FMT_DISABLE_CONVERSION_TO_INT(long double); - -template -struct EnableIf {}; - -template -struct EnableIf -{ - typedef T type; -}; - -template -struct Conditional -{ - typedef T type; -}; - -template -struct Conditional -{ - typedef F type; -}; - -// For bcc32 which doesn't understand ! in template arguments. -template -struct Not -{ - enum { value = 0 }; -}; - -template <> -struct Not -{ - enum { value = 1 }; -}; - -template -struct False -{ - enum { value = 0 }; -}; - -template struct LConvCheck -{ - LConvCheck(int) {} -}; - -// Returns the thousands separator for the current locale. -// We check if ``lconv`` contains ``thousands_sep`` because on Android -// ``lconv`` is stubbed as an empty struct. -template -inline StringRef thousands_sep( - LConv *lc, LConvCheck = 0) -{ - return lc->thousands_sep; -} - -inline fmt::StringRef thousands_sep(...) -{ - return ""; -} - -#define FMT_CONCAT(a, b) a##b - -#if FMT_GCC_VERSION >= 407 -# define FMT_UNUSED __attribute__((unused)) -#else -# define FMT_UNUSED -#endif - -#ifndef FMT_USE_STATIC_ASSERT -# define FMT_USE_STATIC_ASSERT 0 -#endif - -#if FMT_USE_STATIC_ASSERT || FMT_HAS_FEATURE(cxx_static_assert) || \ - (FMT_GCC_VERSION >= 403 && FMT_HAS_GXX_CXX11) || _MSC_VER >= 1600 -# define FMT_STATIC_ASSERT(cond, message) static_assert(cond, message) -#else -# define FMT_CONCAT_(a, b) FMT_CONCAT(a, b) -# define FMT_STATIC_ASSERT(cond, message) \ - typedef int FMT_CONCAT_(Assert, __LINE__)[(cond) ? 1 : -1] FMT_UNUSED -#endif - -template -void format_arg(Formatter &, const Char *, const T &) -{ - FMT_STATIC_ASSERT(False::value, - "Cannot format argument. To enable the use of ostream " - "operator<< include fmt/ostream.h. Otherwise provide " - "an overload of format_arg."); -} - -// Makes an Arg object from any type. -template -class MakeValue : public Arg -{ -public: - typedef typename Formatter::Char Char; - -private: - // The following two methods are private to disallow formatting of - // arbitrary pointers. If you want to output a pointer cast it to - // "void *" or "const void *". In particular, this forbids formatting - // of "[const] volatile char *" which is printed as bool by iostreams. - // Do not implement! - template - MakeValue(const T *value); - template - MakeValue(T *value); - - // The following methods are private to disallow formatting of wide - // characters and strings into narrow strings as in - // fmt::format("{}", L"test"); - // To fix this, use a wide format string: fmt::format(L"{}", L"test"). -#if !FMT_MSC_VER || defined(_NATIVE_WCHAR_T_DEFINED) - MakeValue(typename WCharHelper::Unsupported); -#endif - MakeValue(typename WCharHelper::Unsupported); - MakeValue(typename WCharHelper::Unsupported); - MakeValue(typename WCharHelper::Unsupported); - MakeValue(typename WCharHelper::Unsupported); - - void set_string(StringRef str) - { - string.value = str.data(); - string.size = str.size(); - } - - void set_string(WStringRef str) - { - wstring.value = str.data(); - wstring.size = str.size(); - } - - // Formats an argument of a custom type, such as a user-defined class. - template - static void format_custom_arg( - void *formatter, const void *arg, void *format_str_ptr) - { - format_arg(*static_cast(formatter), - *static_cast(format_str_ptr), - *static_cast(arg)); - } - -public: - MakeValue() {} - -#define FMT_MAKE_VALUE_(Type, field, TYPE, rhs) \ - MakeValue(Type value) { field = rhs; } \ - static uint64_t type(Type) { return Arg::TYPE; } - -#define FMT_MAKE_VALUE(Type, field, TYPE) \ - FMT_MAKE_VALUE_(Type, field, TYPE, value) - - FMT_MAKE_VALUE(bool, int_value, BOOL) - FMT_MAKE_VALUE(short, int_value, INT) - FMT_MAKE_VALUE(unsigned short, uint_value, UINT) - FMT_MAKE_VALUE(int, int_value, INT) - FMT_MAKE_VALUE(unsigned, uint_value, UINT) - - MakeValue(long value) - { - // To minimize the number of types we need to deal with, long is - // translated either to int or to long long depending on its size. - if (const_check(sizeof(long) == sizeof(int))) - int_value = static_cast(value); - else - long_long_value = value; - } - static uint64_t type(long) - { - return sizeof(long) == sizeof(int) ? Arg::INT : Arg::LONG_LONG; - } - - MakeValue(unsigned long value) - { - if (const_check(sizeof(unsigned long) == sizeof(unsigned))) - uint_value = static_cast(value); - else - ulong_long_value = value; - } - static uint64_t type(unsigned long) - { - return sizeof(unsigned long) == sizeof(unsigned) ? - Arg::UINT : Arg::ULONG_LONG; - } - - FMT_MAKE_VALUE(LongLong, long_long_value, LONG_LONG) - FMT_MAKE_VALUE(ULongLong, ulong_long_value, ULONG_LONG) - FMT_MAKE_VALUE(float, double_value, DOUBLE) - FMT_MAKE_VALUE(double, double_value, DOUBLE) - FMT_MAKE_VALUE(long double, long_double_value, LONG_DOUBLE) - FMT_MAKE_VALUE(signed char, int_value, INT) - FMT_MAKE_VALUE(unsigned char, uint_value, UINT) - FMT_MAKE_VALUE(char, int_value, CHAR) - -#if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED) - MakeValue(typename WCharHelper::Supported value) - { - int_value = value; - } - static uint64_t type(wchar_t) - { - return Arg::CHAR; - } -#endif - -#define FMT_MAKE_STR_VALUE(Type, TYPE) \ - MakeValue(Type value) { set_string(value); } \ - static uint64_t type(Type) { return Arg::TYPE; } - - FMT_MAKE_VALUE(char *, string.value, CSTRING) - FMT_MAKE_VALUE(const char *, string.value, CSTRING) - FMT_MAKE_VALUE(signed char *, sstring.value, CSTRING) - FMT_MAKE_VALUE(const signed char *, sstring.value, CSTRING) - FMT_MAKE_VALUE(unsigned char *, ustring.value, CSTRING) - FMT_MAKE_VALUE(const unsigned char *, ustring.value, CSTRING) - FMT_MAKE_STR_VALUE(const std::string &, STRING) - FMT_MAKE_STR_VALUE(StringRef, STRING) - FMT_MAKE_VALUE_(CStringRef, string.value, CSTRING, value.c_str()) - -#define FMT_MAKE_WSTR_VALUE(Type, TYPE) \ - MakeValue(typename WCharHelper::Supported value) { \ - set_string(value); \ - } \ - static uint64_t type(Type) { return Arg::TYPE; } - - FMT_MAKE_WSTR_VALUE(wchar_t *, WSTRING) - FMT_MAKE_WSTR_VALUE(const wchar_t *, WSTRING) - FMT_MAKE_WSTR_VALUE(const std::wstring &, WSTRING) - FMT_MAKE_WSTR_VALUE(WStringRef, WSTRING) - - FMT_MAKE_VALUE(void *, pointer, POINTER) - FMT_MAKE_VALUE(const void *, pointer, POINTER) - - template - MakeValue(const T &value, - typename EnableIf::value>::value, int>::type = 0) - { - custom.value = &value; - custom.format = &format_custom_arg; - } - - template - MakeValue(const T &value, - typename EnableIf::value, int>::type = 0) - { - int_value = value; - } - - template - static uint64_t type(const T &) - { - return ConvertToInt::value ? Arg::INT : Arg::CUSTOM; - } - - // Additional template param `Char_` is needed here because make_type always - // uses char. - template - MakeValue(const NamedArg &value) - { - pointer = &value; - } - - template - static uint64_t type(const NamedArg &) - { - return Arg::NAMED_ARG; - } -}; - -template -class MakeArg : public Arg -{ -public: - MakeArg() - { - type = Arg::NONE; - } - - template - MakeArg(const T &value) - : Arg(MakeValue(value)) - { - type = static_cast(MakeValue::type(value)); - } -}; - -template -struct NamedArg : Arg -{ - BasicStringRef name; - - template - NamedArg(BasicStringRef argname, const T &value) - : Arg(MakeArg< BasicFormatter >(value)), name(argname) {} -}; - -class RuntimeError : public std::runtime_error -{ -protected: - RuntimeError() : std::runtime_error("") {} - ~RuntimeError() throw(); -}; - -template -class ArgMap; -} // namespace internal - -/** An argument list. */ -class ArgList -{ -private: - // To reduce compiled code size per formatting function call, types of first - // MAX_PACKED_ARGS arguments are passed in the types_ field. - uint64_t types_; - union - { - // If the number of arguments is less than MAX_PACKED_ARGS, the argument - // values are stored in values_, otherwise they are stored in args_. - // This is done to reduce compiled code size as storing larger objects - // may require more code (at least on x86-64) even if the same amount of - // data is actually copied to stack. It saves ~10% on the bloat test. - const internal::Value *values_; - const internal::Arg *args_; - }; - - internal::Arg::Type type(unsigned index) const - { - unsigned shift = index * 4; - uint64_t mask = 0xf; - return static_cast( - (types_ & (mask << shift)) >> shift); - } - - template - friend class internal::ArgMap; - -public: - // Maximum number of arguments with packed types. - enum { MAX_PACKED_ARGS = 16 }; - - ArgList() : types_(0) {} - - ArgList(ULongLong types, const internal::Value *values) - : types_(types), values_(values) {} - ArgList(ULongLong types, const internal::Arg *args) - : types_(types), args_(args) {} - - /** Returns the argument at specified index. */ - internal::Arg operator[](unsigned index) const - { - using internal::Arg; - Arg arg; - bool use_values = type(MAX_PACKED_ARGS - 1) == Arg::NONE; - if (index < MAX_PACKED_ARGS) - { - Arg::Type arg_type = type(index); - internal::Value &val = arg; - if (arg_type != Arg::NONE) - val = use_values ? values_[index] : args_[index]; - arg.type = arg_type; - return arg; - } - if (use_values) - { - // The index is greater than the number of arguments that can be stored - // in values, so return a "none" argument. - arg.type = Arg::NONE; - return arg; - } - for (unsigned i = MAX_PACKED_ARGS; i <= index; ++i) - { - if (args_[i].type == Arg::NONE) - return args_[i]; - } - return args_[index]; - } -}; - -#define FMT_DISPATCH(call) static_cast(this)->call - -/** - \rst - An argument visitor based on the `curiously recurring template pattern - `_. - - To use `~fmt::ArgVisitor` define a subclass that implements some or all of the - visit methods with the same signatures as the methods in `~fmt::ArgVisitor`, - for example, `~fmt::ArgVisitor::visit_int()`. - Pass the subclass as the *Impl* template parameter. Then calling - `~fmt::ArgVisitor::visit` for some argument will dispatch to a visit method - specific to the argument type. For example, if the argument type is - ``double`` then the `~fmt::ArgVisitor::visit_double()` method of a subclass - will be called. If the subclass doesn't contain a method with this signature, - then a corresponding method of `~fmt::ArgVisitor` will be called. - - **Example**:: - - class MyArgVisitor : public fmt::ArgVisitor { - public: - void visit_int(int value) { fmt::print("{}", value); } - void visit_double(double value) { fmt::print("{}", value ); } - }; - \endrst - */ -template -class ArgVisitor -{ -private: - typedef internal::Arg Arg; - -public: - void report_unhandled_arg() {} - - Result visit_unhandled_arg() - { - FMT_DISPATCH(report_unhandled_arg()); - return Result(); - } - - /** Visits an ``int`` argument. **/ - Result visit_int(int value) - { - return FMT_DISPATCH(visit_any_int(value)); - } - - /** Visits a ``long long`` argument. **/ - Result visit_long_long(LongLong value) - { - return FMT_DISPATCH(visit_any_int(value)); - } - - /** Visits an ``unsigned`` argument. **/ - Result visit_uint(unsigned value) - { - return FMT_DISPATCH(visit_any_int(value)); - } - - /** Visits an ``unsigned long long`` argument. **/ - Result visit_ulong_long(ULongLong value) - { - return FMT_DISPATCH(visit_any_int(value)); - } - - /** Visits a ``bool`` argument. **/ - Result visit_bool(bool value) - { - return FMT_DISPATCH(visit_any_int(value)); - } - - /** Visits a ``char`` or ``wchar_t`` argument. **/ - Result visit_char(int value) - { - return FMT_DISPATCH(visit_any_int(value)); - } - - /** Visits an argument of any integral type. **/ - template - Result visit_any_int(T) - { - return FMT_DISPATCH(visit_unhandled_arg()); - } - - /** Visits a ``double`` argument. **/ - Result visit_double(double value) - { - return FMT_DISPATCH(visit_any_double(value)); - } - - /** Visits a ``long double`` argument. **/ - Result visit_long_double(long double value) - { - return FMT_DISPATCH(visit_any_double(value)); - } - - /** Visits a ``double`` or ``long double`` argument. **/ - template - Result visit_any_double(T) - { - return FMT_DISPATCH(visit_unhandled_arg()); - } - - /** Visits a null-terminated C string (``const char *``) argument. **/ - Result visit_cstring(const char *) - { - return FMT_DISPATCH(visit_unhandled_arg()); - } - - /** Visits a string argument. **/ - Result visit_string(Arg::StringValue) - { - return FMT_DISPATCH(visit_unhandled_arg()); - } - - /** Visits a wide string argument. **/ - Result visit_wstring(Arg::StringValue) - { - return FMT_DISPATCH(visit_unhandled_arg()); - } - - /** Visits a pointer argument. **/ - Result visit_pointer(const void *) - { - return FMT_DISPATCH(visit_unhandled_arg()); - } - - /** Visits an argument of a custom (user-defined) type. **/ - Result visit_custom(Arg::CustomValue) - { - return FMT_DISPATCH(visit_unhandled_arg()); - } - - /** - \rst - Visits an argument dispatching to the appropriate visit method based on - the argument type. For example, if the argument type is ``double`` then - the `~fmt::ArgVisitor::visit_double()` method of the *Impl* class will be - called. - \endrst - */ - Result visit(const Arg &arg) - { - switch (arg.type) - { - case Arg::NONE: - case Arg::NAMED_ARG: - FMT_ASSERT(false, "invalid argument type"); - break; - case Arg::INT: - return FMT_DISPATCH(visit_int(arg.int_value)); - case Arg::UINT: - return FMT_DISPATCH(visit_uint(arg.uint_value)); - case Arg::LONG_LONG: - return FMT_DISPATCH(visit_long_long(arg.long_long_value)); - case Arg::ULONG_LONG: - return FMT_DISPATCH(visit_ulong_long(arg.ulong_long_value)); - case Arg::BOOL: - return FMT_DISPATCH(visit_bool(arg.int_value != 0)); - case Arg::CHAR: - return FMT_DISPATCH(visit_char(arg.int_value)); - case Arg::DOUBLE: - return FMT_DISPATCH(visit_double(arg.double_value)); - case Arg::LONG_DOUBLE: - return FMT_DISPATCH(visit_long_double(arg.long_double_value)); - case Arg::CSTRING: - return FMT_DISPATCH(visit_cstring(arg.string.value)); - case Arg::STRING: - return FMT_DISPATCH(visit_string(arg.string)); - case Arg::WSTRING: - return FMT_DISPATCH(visit_wstring(arg.wstring)); - case Arg::POINTER: - return FMT_DISPATCH(visit_pointer(arg.pointer)); - case Arg::CUSTOM: - return FMT_DISPATCH(visit_custom(arg.custom)); - } - return Result(); - } -}; - -enum Alignment -{ - ALIGN_DEFAULT, ALIGN_LEFT, ALIGN_RIGHT, ALIGN_CENTER, ALIGN_NUMERIC -}; - -// Flags. -enum -{ - SIGN_FLAG = 1, PLUS_FLAG = 2, MINUS_FLAG = 4, HASH_FLAG = 8, - CHAR_FLAG = 0x10 // Argument has char type - used in error reporting. -}; - -// An empty format specifier. -struct EmptySpec {}; - -// A type specifier. -template -struct TypeSpec : EmptySpec -{ - Alignment align() const - { - return ALIGN_DEFAULT; - } - unsigned width() const - { - return 0; - } - int precision() const - { - return -1; - } - bool flag(unsigned) const - { - return false; - } - char type() const - { - return TYPE; - } - char fill() const - { - return ' '; - } -}; - -// A width specifier. -struct WidthSpec -{ - unsigned width_; - // Fill is always wchar_t and cast to char if necessary to avoid having - // two specialization of WidthSpec and its subclasses. - wchar_t fill_; - - WidthSpec(unsigned width, wchar_t fill) : width_(width), fill_(fill) {} - - unsigned width() const - { - return width_; - } - wchar_t fill() const - { - return fill_; - } -}; - -// An alignment specifier. -struct AlignSpec : WidthSpec -{ - Alignment align_; - - AlignSpec(unsigned width, wchar_t fill, Alignment align = ALIGN_DEFAULT) - : WidthSpec(width, fill), align_(align) {} - - Alignment align() const - { - return align_; - } - - int precision() const - { - return -1; - } -}; - -// An alignment and type specifier. -template -struct AlignTypeSpec : AlignSpec -{ - AlignTypeSpec(unsigned width, wchar_t fill) : AlignSpec(width, fill) {} - - bool flag(unsigned) const - { - return false; - } - char type() const - { - return TYPE; - } -}; - -// A full format specifier. -struct FormatSpec : AlignSpec -{ - unsigned flags_; - int precision_; - char type_; - - FormatSpec( - unsigned width = 0, char type = 0, wchar_t fill = ' ') - : AlignSpec(width, fill), flags_(0), precision_(-1), type_(type) {} - - bool flag(unsigned f) const - { - return (flags_ & f) != 0; - } - int precision() const - { - return precision_; - } - char type() const - { - return type_; - } -}; - -// An integer format specifier. -template , typename Char = char> -class IntFormatSpec : public SpecT -{ -private: - T value_; - -public: - IntFormatSpec(T val, const SpecT &spec = SpecT()) - : SpecT(spec), value_(val) {} - - T value() const - { - return value_; - } -}; - -// A string format specifier. -template -class StrFormatSpec : public AlignSpec -{ -private: - const Char *str_; - -public: - template - StrFormatSpec(const Char *str, unsigned width, FillChar fill) - : AlignSpec(width, fill), str_(str) - { - internal::CharTraits::convert(FillChar()); - } - - const Char *str() const - { - return str_; - } -}; - -/** - Returns an integer format specifier to format the value in base 2. - */ -IntFormatSpec > bin(int value); - -/** - Returns an integer format specifier to format the value in base 8. - */ -IntFormatSpec > oct(int value); - -/** - Returns an integer format specifier to format the value in base 16 using - lower-case letters for the digits above 9. - */ -IntFormatSpec > hex(int value); - -/** - Returns an integer formatter format specifier to format in base 16 using - upper-case letters for the digits above 9. - */ -IntFormatSpec > hexu(int value); - -/** - \rst - Returns an integer format specifier to pad the formatted argument with the - fill character to the specified width using the default (right) numeric - alignment. - - **Example**:: - - MemoryWriter out; - out << pad(hex(0xcafe), 8, '0'); - // out.str() == "0000cafe" - - \endrst - */ -template -IntFormatSpec, Char> pad( - int value, unsigned width, Char fill = ' '); - -#define FMT_DEFINE_INT_FORMATTERS(TYPE) \ -inline IntFormatSpec > bin(TYPE value) { \ - return IntFormatSpec >(value, TypeSpec<'b'>()); \ -} \ - \ -inline IntFormatSpec > oct(TYPE value) { \ - return IntFormatSpec >(value, TypeSpec<'o'>()); \ -} \ - \ -inline IntFormatSpec > hex(TYPE value) { \ - return IntFormatSpec >(value, TypeSpec<'x'>()); \ -} \ - \ -inline IntFormatSpec > hexu(TYPE value) { \ - return IntFormatSpec >(value, TypeSpec<'X'>()); \ -} \ - \ -template \ -inline IntFormatSpec > pad( \ - IntFormatSpec > f, unsigned width) { \ - return IntFormatSpec >( \ - f.value(), AlignTypeSpec(width, ' ')); \ -} \ - \ -/* For compatibility with older compilers we provide two overloads for pad, */ \ -/* one that takes a fill character and one that doesn't. In the future this */ \ -/* can be replaced with one overload making the template argument Char */ \ -/* default to char (C++11). */ \ -template \ -inline IntFormatSpec, Char> pad( \ - IntFormatSpec, Char> f, \ - unsigned width, Char fill) { \ - return IntFormatSpec, Char>( \ - f.value(), AlignTypeSpec(width, fill)); \ -} \ - \ -inline IntFormatSpec > pad( \ - TYPE value, unsigned width) { \ - return IntFormatSpec >( \ - value, AlignTypeSpec<0>(width, ' ')); \ -} \ - \ -template \ -inline IntFormatSpec, Char> pad( \ - TYPE value, unsigned width, Char fill) { \ - return IntFormatSpec, Char>( \ - value, AlignTypeSpec<0>(width, fill)); \ -} - -FMT_DEFINE_INT_FORMATTERS(int) -FMT_DEFINE_INT_FORMATTERS(long) -FMT_DEFINE_INT_FORMATTERS(unsigned) -FMT_DEFINE_INT_FORMATTERS(unsigned long) -FMT_DEFINE_INT_FORMATTERS(LongLong) -FMT_DEFINE_INT_FORMATTERS(ULongLong) - -/** - \rst - Returns a string formatter that pads the formatted argument with the fill - character to the specified width using the default (left) string alignment. - - **Example**:: - - std::string s = str(MemoryWriter() << pad("abc", 8)); - // s == "abc " - - \endrst - */ -template -inline StrFormatSpec pad( - const Char *str, unsigned width, Char fill = ' ') -{ - return StrFormatSpec(str, width, fill); -} - -inline StrFormatSpec pad( - const wchar_t *str, unsigned width, char fill = ' ') -{ - return StrFormatSpec(str, width, fill); -} - -namespace internal -{ - -template -class ArgMap -{ -private: - typedef std::vector< - std::pair, internal::Arg> > MapType; - typedef typename MapType::value_type Pair; - - MapType map_; - -public: - FMT_API void init(const ArgList &args); - - const internal::Arg* find(const fmt::BasicStringRef &name) const - { - // The list is unsorted, so just return the first matching name. - for (typename MapType::const_iterator it = map_.begin(), end = map_.end(); - it != end; ++it) - { - if (it->first == name) - return &it->second; - } - return 0; - } -}; - -template -class ArgFormatterBase : public ArgVisitor -{ -private: - BasicWriter &writer_; - FormatSpec &spec_; - - FMT_DISALLOW_COPY_AND_ASSIGN(ArgFormatterBase); - - void write_pointer(const void *p) - { - spec_.flags_ = HASH_FLAG; - spec_.type_ = 'x'; - writer_.write_int(reinterpret_cast(p), spec_); - } - -protected: - BasicWriter &writer() - { - return writer_; - } - FormatSpec &spec() - { - return spec_; - } - - void write(bool value) - { - const char *str_value = value ? "true" : "false"; - Arg::StringValue str = { str_value, std::strlen(str_value) }; - writer_.write_str(str, spec_); - } - - void write(const char *value) - { - Arg::StringValue str = {value, value != 0 ? std::strlen(value) : 0}; - writer_.write_str(str, spec_); - } - -public: - ArgFormatterBase(BasicWriter &w, FormatSpec &s) - : writer_(w), spec_(s) {} - - template - void visit_any_int(T value) - { - writer_.write_int(value, spec_); - } - - template - void visit_any_double(T value) - { - writer_.write_double(value, spec_); - } - - void visit_bool(bool value) - { - if (spec_.type_) - return visit_any_int(value); - write(value); - } - - void visit_char(int value) - { - if (spec_.type_ && spec_.type_ != 'c') - { - spec_.flags_ |= CHAR_FLAG; - writer_.write_int(value, spec_); - return; - } - if (spec_.align_ == ALIGN_NUMERIC || spec_.flags_ != 0) - FMT_THROW(FormatError("invalid format specifier for char")); - typedef typename BasicWriter::CharPtr CharPtr; - Char fill = internal::CharTraits::cast(spec_.fill()); - CharPtr out = CharPtr(); - const unsigned CHAR_WIDTH = 1; - if (spec_.width_ > CHAR_WIDTH) - { - out = writer_.grow_buffer(spec_.width_); - if (spec_.align_ == ALIGN_RIGHT) - { - std::uninitialized_fill_n(out, spec_.width_ - CHAR_WIDTH, fill); - out += spec_.width_ - CHAR_WIDTH; - } - else if (spec_.align_ == ALIGN_CENTER) - { - out = writer_.fill_padding(out, spec_.width_, - internal::const_check(CHAR_WIDTH), fill); - } - else - { - std::uninitialized_fill_n(out + CHAR_WIDTH, - spec_.width_ - CHAR_WIDTH, fill); - } - } - else - { - out = writer_.grow_buffer(CHAR_WIDTH); - } - *out = internal::CharTraits::cast(value); - } - - void visit_cstring(const char *value) - { - if (spec_.type_ == 'p') - return write_pointer(value); - write(value); - } - - void visit_string(Arg::StringValue value) - { - writer_.write_str(value, spec_); - } - - using ArgVisitor::visit_wstring; - - void visit_wstring(Arg::StringValue value) - { - writer_.write_str(value, spec_); - } - - void visit_pointer(const void *value) - { - if (spec_.type_ && spec_.type_ != 'p') - report_unknown_type(spec_.type_, "pointer"); - write_pointer(value); - } -}; - -class FormatterBase -{ -private: - ArgList args_; - int next_arg_index_; - - // Returns the argument with specified index. - FMT_API Arg do_get_arg(unsigned arg_index, const char *&error); - -protected: - const ArgList &args() const - { - return args_; - } - - explicit FormatterBase(const ArgList &args) - { - args_ = args; - next_arg_index_ = 0; - } - - // Returns the next argument. - Arg next_arg(const char *&error) - { - if (next_arg_index_ >= 0) - return do_get_arg(internal::to_unsigned(next_arg_index_++), error); - error = "cannot switch from manual to automatic argument indexing"; - return Arg(); - } - - // Checks if manual indexing is used and returns the argument with - // specified index. - Arg get_arg(unsigned arg_index, const char *&error) - { - return check_no_auto_index(error) ? do_get_arg(arg_index, error) : Arg(); - } - - bool check_no_auto_index(const char *&error) - { - if (next_arg_index_ > 0) - { - error = "cannot switch from automatic to manual argument indexing"; - return false; - } - next_arg_index_ = -1; - return true; - } - - template - void write(BasicWriter &w, const Char *start, const Char *end) - { - if (start != end) - w << BasicStringRef(start, internal::to_unsigned(end - start)); - } -}; -} // namespace internal - -/** - \rst - An argument formatter based on the `curiously recurring template pattern - `_. - - To use `~fmt::BasicArgFormatter` define a subclass that implements some or - all of the visit methods with the same signatures as the methods in - `~fmt::ArgVisitor`, for example, `~fmt::ArgVisitor::visit_int()`. - Pass the subclass as the *Impl* template parameter. When a formatting - function processes an argument, it will dispatch to a visit method - specific to the argument type. For example, if the argument type is - ``double`` then the `~fmt::ArgVisitor::visit_double()` method of a subclass - will be called. If the subclass doesn't contain a method with this signature, - then a corresponding method of `~fmt::BasicArgFormatter` or its superclass - will be called. - \endrst - */ -template -class BasicArgFormatter : public internal::ArgFormatterBase -{ -private: - BasicFormatter &formatter_; - const Char *format_; - -public: - /** - \rst - Constructs an argument formatter object. - *formatter* is a reference to the main formatter object, *spec* contains - format specifier information for standard argument types, and *fmt* points - to the part of the format string being parsed for custom argument types. - \endrst - */ - BasicArgFormatter(BasicFormatter &formatter, - FormatSpec &spec, const Char *fmt) - : internal::ArgFormatterBase(formatter.writer(), spec), - formatter_(formatter), format_(fmt) {} - - /** Formats an argument of a custom (user-defined) type. */ - void visit_custom(internal::Arg::CustomValue c) - { - c.format(&formatter_, c.value, &format_); - } -}; - -/** The default argument formatter. */ -template -class ArgFormatter : public BasicArgFormatter, Char> -{ -public: - /** Constructs an argument formatter object. */ - ArgFormatter(BasicFormatter &formatter, - FormatSpec &spec, const Char *fmt) - : BasicArgFormatter, Char>(formatter, spec, fmt) {} -}; - -/** This template formats data and writes the output to a writer. */ -template -class BasicFormatter : private internal::FormatterBase -{ -public: - /** The character type for the output. */ - typedef CharType Char; - -private: - BasicWriter &writer_; - internal::ArgMap map_; - - FMT_DISALLOW_COPY_AND_ASSIGN(BasicFormatter); - - using internal::FormatterBase::get_arg; - - // Checks if manual indexing is used and returns the argument with - // specified name. - internal::Arg get_arg(BasicStringRef arg_name, const char *&error); - - // Parses argument index and returns corresponding argument. - internal::Arg parse_arg_index(const Char *&s); - - // Parses argument name and returns corresponding argument. - internal::Arg parse_arg_name(const Char *&s); - -public: - /** - \rst - Constructs a ``BasicFormatter`` object. References to the arguments and - the writer are stored in the formatter object so make sure they have - appropriate lifetimes. - \endrst - */ - BasicFormatter(const ArgList &args, BasicWriter &w) - : internal::FormatterBase(args), writer_(w) {} - - /** Returns a reference to the writer associated with this formatter. */ - BasicWriter &writer() - { - return writer_; - } - - /** Formats stored arguments and writes the output to the writer. */ - void format(BasicCStringRef format_str); - - // Formats a single argument and advances format_str, a format string pointer. - const Char *format(const Char *&format_str, const internal::Arg &arg); -}; - -// Generates a comma-separated list with results of applying f to -// numbers 0..n-1. -# define FMT_GEN(n, f) FMT_GEN##n(f) -# define FMT_GEN1(f) f(0) -# define FMT_GEN2(f) FMT_GEN1(f), f(1) -# define FMT_GEN3(f) FMT_GEN2(f), f(2) -# define FMT_GEN4(f) FMT_GEN3(f), f(3) -# define FMT_GEN5(f) FMT_GEN4(f), f(4) -# define FMT_GEN6(f) FMT_GEN5(f), f(5) -# define FMT_GEN7(f) FMT_GEN6(f), f(6) -# define FMT_GEN8(f) FMT_GEN7(f), f(7) -# define FMT_GEN9(f) FMT_GEN8(f), f(8) -# define FMT_GEN10(f) FMT_GEN9(f), f(9) -# define FMT_GEN11(f) FMT_GEN10(f), f(10) -# define FMT_GEN12(f) FMT_GEN11(f), f(11) -# define FMT_GEN13(f) FMT_GEN12(f), f(12) -# define FMT_GEN14(f) FMT_GEN13(f), f(13) -# define FMT_GEN15(f) FMT_GEN14(f), f(14) - -namespace internal -{ -inline uint64_t make_type() -{ - return 0; -} - -template -inline uint64_t make_type(const T &arg) -{ - return MakeValue< BasicFormatter >::type(arg); -} - -template - struct ArgArray; - -template -struct ArgArray -{ - typedef Value Type[N > 0 ? N : 1]; - -template -static Value make(const T &value) -{ -#ifdef __clang__ - Value result = MakeValue(value); - // Workaround a bug in Apple LLVM version 4.2 (clang-425.0.28) of clang: - // https://github.com/fmtlib/fmt/issues/276 - (void)result.custom.format; - return result; -#else - return MakeValue(value); -#endif -} - }; - -template -struct ArgArray -{ - typedef Arg Type[N + 1]; // +1 for the list end Arg::NONE - - template - static Arg make(const T &value) - { - return MakeArg(value); - } -}; - -#if FMT_USE_VARIADIC_TEMPLATES -template -inline uint64_t make_type(const Arg &first, const Args & ... tail) -{ - return make_type(first) | (make_type(tail...) << 4); -} - -#else - -struct ArgType -{ - uint64_t type; - - ArgType() : type(0) {} - - template - ArgType(const T &arg) : type(make_type(arg)) {} -}; - -# define FMT_ARG_TYPE_DEFAULT(n) ArgType t##n = ArgType() - -inline uint64_t make_type(FMT_GEN15(FMT_ARG_TYPE_DEFAULT)) -{ - return t0.type | (t1.type << 4) | (t2.type << 8) | (t3.type << 12) | - (t4.type << 16) | (t5.type << 20) | (t6.type << 24) | (t7.type << 28) | - (t8.type << 32) | (t9.type << 36) | (t10.type << 40) | (t11.type << 44) | - (t12.type << 48) | (t13.type << 52) | (t14.type << 56); -} -#endif -} // namespace internal - -# define FMT_MAKE_TEMPLATE_ARG(n) typename T##n -# define FMT_MAKE_ARG_TYPE(n) T##n -# define FMT_MAKE_ARG(n) const T##n &v##n -# define FMT_ASSIGN_char(n) \ - arr[n] = fmt::internal::MakeValue< fmt::BasicFormatter >(v##n) -# define FMT_ASSIGN_wchar_t(n) \ - arr[n] = fmt::internal::MakeValue< fmt::BasicFormatter >(v##n) - -#if FMT_USE_VARIADIC_TEMPLATES -// Defines a variadic function returning void. -# define FMT_VARIADIC_VOID(func, arg_type) \ - template \ - void func(arg_type arg0, const Args & ... args) { \ - typedef fmt::internal::ArgArray ArgArray; \ - typename ArgArray::Type array{ \ - ArgArray::template make >(args)...}; \ - func(arg0, fmt::ArgList(fmt::internal::make_type(args...), array)); \ - } - -// Defines a variadic constructor. -# define FMT_VARIADIC_CTOR(ctor, func, arg0_type, arg1_type) \ - template \ - ctor(arg0_type arg0, arg1_type arg1, const Args & ... args) { \ - typedef fmt::internal::ArgArray ArgArray; \ - typename ArgArray::Type array{ \ - ArgArray::template make >(args)...}; \ - func(arg0, arg1, fmt::ArgList(fmt::internal::make_type(args...), array)); \ - } - -#else - -# define FMT_MAKE_REF(n) \ - fmt::internal::MakeValue< fmt::BasicFormatter >(v##n) -# define FMT_MAKE_REF2(n) v##n - -// Defines a wrapper for a function taking one argument of type arg_type -// and n additional arguments of arbitrary types. -# define FMT_WRAP1(func, arg_type, n) \ - template \ - inline void func(arg_type arg1, FMT_GEN(n, FMT_MAKE_ARG)) { \ - const fmt::internal::ArgArray::Type array = {FMT_GEN(n, FMT_MAKE_REF)}; \ - func(arg1, fmt::ArgList( \ - fmt::internal::make_type(FMT_GEN(n, FMT_MAKE_REF2)), array)); \ - } - -// Emulates a variadic function returning void on a pre-C++11 compiler. -# define FMT_VARIADIC_VOID(func, arg_type) \ - inline void func(arg_type arg) { func(arg, fmt::ArgList()); } \ - FMT_WRAP1(func, arg_type, 1) FMT_WRAP1(func, arg_type, 2) \ - FMT_WRAP1(func, arg_type, 3) FMT_WRAP1(func, arg_type, 4) \ - FMT_WRAP1(func, arg_type, 5) FMT_WRAP1(func, arg_type, 6) \ - FMT_WRAP1(func, arg_type, 7) FMT_WRAP1(func, arg_type, 8) \ - FMT_WRAP1(func, arg_type, 9) FMT_WRAP1(func, arg_type, 10) - -# define FMT_CTOR(ctor, func, arg0_type, arg1_type, n) \ - template \ - ctor(arg0_type arg0, arg1_type arg1, FMT_GEN(n, FMT_MAKE_ARG)) { \ - const fmt::internal::ArgArray::Type array = {FMT_GEN(n, FMT_MAKE_REF)}; \ - func(arg0, arg1, fmt::ArgList( \ - fmt::internal::make_type(FMT_GEN(n, FMT_MAKE_REF2)), array)); \ - } - -// Emulates a variadic constructor on a pre-C++11 compiler. -# define FMT_VARIADIC_CTOR(ctor, func, arg0_type, arg1_type) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 1) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 2) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 3) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 4) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 5) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 6) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 7) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 8) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 9) \ - FMT_CTOR(ctor, func, arg0_type, arg1_type, 10) -#endif - -// Generates a comma-separated list with results of applying f to pairs -// (argument, index). -#define FMT_FOR_EACH1(f, x0) f(x0, 0) -#define FMT_FOR_EACH2(f, x0, x1) \ - FMT_FOR_EACH1(f, x0), f(x1, 1) -#define FMT_FOR_EACH3(f, x0, x1, x2) \ - FMT_FOR_EACH2(f, x0 ,x1), f(x2, 2) -#define FMT_FOR_EACH4(f, x0, x1, x2, x3) \ - FMT_FOR_EACH3(f, x0, x1, x2), f(x3, 3) -#define FMT_FOR_EACH5(f, x0, x1, x2, x3, x4) \ - FMT_FOR_EACH4(f, x0, x1, x2, x3), f(x4, 4) -#define FMT_FOR_EACH6(f, x0, x1, x2, x3, x4, x5) \ - FMT_FOR_EACH5(f, x0, x1, x2, x3, x4), f(x5, 5) -#define FMT_FOR_EACH7(f, x0, x1, x2, x3, x4, x5, x6) \ - FMT_FOR_EACH6(f, x0, x1, x2, x3, x4, x5), f(x6, 6) -#define FMT_FOR_EACH8(f, x0, x1, x2, x3, x4, x5, x6, x7) \ - FMT_FOR_EACH7(f, x0, x1, x2, x3, x4, x5, x6), f(x7, 7) -#define FMT_FOR_EACH9(f, x0, x1, x2, x3, x4, x5, x6, x7, x8) \ - FMT_FOR_EACH8(f, x0, x1, x2, x3, x4, x5, x6, x7), f(x8, 8) -#define FMT_FOR_EACH10(f, x0, x1, x2, x3, x4, x5, x6, x7, x8, x9) \ - FMT_FOR_EACH9(f, x0, x1, x2, x3, x4, x5, x6, x7, x8), f(x9, 9) - -/** - An error returned by an operating system or a language runtime, - for example a file opening error. -*/ -class SystemError : public internal::RuntimeError -{ -private: - void init(int err_code, CStringRef format_str, ArgList args); - -protected: - int error_code_; - - typedef char Char; // For FMT_VARIADIC_CTOR. - - SystemError() {} - -public: - /** - \rst - Constructs a :class:`fmt::SystemError` object with a description - formatted with `fmt::format_system_error`. *message* and additional - arguments passed into the constructor are formatted similarly to - `fmt::format`. - - **Example**:: - - // This throws a SystemError with the description - // cannot open file 'madeup': No such file or directory - // or similar (system message may vary). - const char *filename = "madeup"; - std::FILE *file = std::fopen(filename, "r"); - if (!file) - throw fmt::SystemError(errno, "cannot open file '{}'", filename); - \endrst - */ - SystemError(int error_code, CStringRef message) - { - init(error_code, message, ArgList()); - } - FMT_VARIADIC_CTOR(SystemError, init, int, CStringRef) - - ~SystemError() throw(); - - int error_code() const - { - return error_code_; - } -}; - -/** - \rst - Formats an error returned by an operating system or a language runtime, - for example a file opening error, and writes it to *out* in the following - form: - - .. parsed-literal:: - **: ** - - where ** is the passed message and ** is - the system message corresponding to the error code. - *error_code* is a system error code as given by ``errno``. - If *error_code* is not a valid error code such as -1, the system message - may look like "Unknown error -1" and is platform-dependent. - \endrst - */ -FMT_API void format_system_error(fmt::Writer &out, int error_code, - fmt::StringRef message) FMT_NOEXCEPT; - -/** - \rst - This template provides operations for formatting and writing data into - a character stream. The output is stored in a buffer provided by a subclass - such as :class:`fmt::BasicMemoryWriter`. - - You can use one of the following typedefs for common character types: - - +---------+----------------------+ - | Type | Definition | - +=========+======================+ - | Writer | BasicWriter | - +---------+----------------------+ - | WWriter | BasicWriter | - +---------+----------------------+ - - \endrst - */ -template -class BasicWriter -{ -private: - // Output buffer. - Buffer &buffer_; - - FMT_DISALLOW_COPY_AND_ASSIGN(BasicWriter); - - typedef typename internal::CharTraits::CharPtr CharPtr; - -#if FMT_SECURE_SCL - // Returns pointer value. - static Char *get(CharPtr p) - { - return p.base(); - } -#else - static Char *get(Char *p) - { - return p; - } -#endif - - // Fills the padding around the content and returns the pointer to the - // content area. - static CharPtr fill_padding(CharPtr buffer, - unsigned total_size, std::size_t content_size, wchar_t fill); - - // Grows the buffer by n characters and returns a pointer to the newly - // allocated area. - CharPtr grow_buffer(std::size_t n) - { - std::size_t size = buffer_.size(); - buffer_.resize(size + n); - return internal::make_ptr(&buffer_[size], n); - } - - // Writes an unsigned decimal integer. - template - Char *write_unsigned_decimal(UInt value, unsigned prefix_size = 0) - { - unsigned num_digits = internal::count_digits(value); - Char *ptr = get(grow_buffer(prefix_size + num_digits)); - internal::format_decimal(ptr + prefix_size, value, num_digits); - return ptr; - } - - // Writes a decimal integer. - template - void write_decimal(Int value) - { - typedef typename internal::IntTraits::MainType MainType; - MainType abs_value = static_cast(value); - if (internal::is_negative(value)) - { - abs_value = 0 - abs_value; - *write_unsigned_decimal(abs_value, 1) = '-'; - } - else - { - write_unsigned_decimal(abs_value, 0); - } - } - - // Prepare a buffer for integer formatting. - CharPtr prepare_int_buffer(unsigned num_digits, - const EmptySpec &, const char *prefix, unsigned prefix_size) - { - unsigned size = prefix_size + num_digits; - CharPtr p = grow_buffer(size); - std::uninitialized_copy(prefix, prefix + prefix_size, p); - return p + size - 1; - } - - template - CharPtr prepare_int_buffer(unsigned num_digits, - const Spec &spec, const char *prefix, unsigned prefix_size); - - // Formats an integer. - template - void write_int(T value, Spec spec); - - // Formats a floating-point number (double or long double). - template - void write_double(T value, const FormatSpec &spec); - - // Writes a formatted string. - template - CharPtr write_str(const StrChar *s, std::size_t size, const AlignSpec &spec); - - template - void write_str(const internal::Arg::StringValue &str, - const FormatSpec &spec); - - // This following methods are private to disallow writing wide characters - // and strings to a char stream. If you want to print a wide string as a - // pointer as std::ostream does, cast it to const void*. - // Do not implement! - void operator<<(typename internal::WCharHelper::Unsupported); - void operator<<( - typename internal::WCharHelper::Unsupported); - - // Appends floating-point length specifier to the format string. - // The second argument is only used for overload resolution. - void append_float_length(Char *&format_ptr, long double) - { - *format_ptr++ = 'L'; - } - - template - void append_float_length(Char *&, T) {} - - template - friend class internal::ArgFormatterBase; - - template - friend class BasicPrintfArgFormatter; - -protected: - /** - Constructs a ``BasicWriter`` object. - */ - explicit BasicWriter(Buffer &b) : buffer_(b) {} - -public: - /** - \rst - Destroys a ``BasicWriter`` object. - \endrst - */ - virtual ~BasicWriter() {} - - /** - Returns the total number of characters written. - */ - std::size_t size() const - { - return buffer_.size(); - } - - /** - Returns a pointer to the output buffer content. No terminating null - character is appended. - */ - const Char *data() const FMT_NOEXCEPT - { - return &buffer_[0]; - } - - /** - Returns a pointer to the output buffer content with terminating null - character appended. - */ - const Char *c_str() const - { - std::size_t size = buffer_.size(); - buffer_.reserve(size + 1); - buffer_[size] = '\0'; - return &buffer_[0]; - } - - /** - \rst - Returns the content of the output buffer as an `std::string`. - \endrst - */ - std::basic_string str() const - { - return std::basic_string(&buffer_[0], buffer_.size()); - } - - /** - \rst - Writes formatted data. - - *args* is an argument list representing arbitrary arguments. - - **Example**:: - - MemoryWriter out; - out.write("Current point:\n"); - out.write("({:+f}, {:+f})", -3.14, 3.14); - - This will write the following output to the ``out`` object: - - .. code-block:: none - - Current point: - (-3.140000, +3.140000) - - The output can be accessed using :func:`data()`, :func:`c_str` or - :func:`str` methods. - - See also :ref:`syntax`. - \endrst - */ - void write(BasicCStringRef format, ArgList args) - { - BasicFormatter(args, *this).format(format); - } - FMT_VARIADIC_VOID(write, BasicCStringRef) - - BasicWriter &operator<<(int value) - { - write_decimal(value); - return *this; - } - BasicWriter &operator<<(unsigned value) - { - return *this << IntFormatSpec(value); - } - BasicWriter &operator<<(long value) - { - write_decimal(value); - return *this; - } - BasicWriter &operator<<(unsigned long value) - { - return *this << IntFormatSpec(value); - } - BasicWriter &operator<<(LongLong value) - { - write_decimal(value); - return *this; - } - - /** - \rst - Formats *value* and writes it to the stream. - \endrst - */ - BasicWriter &operator<<(ULongLong value) - { - return *this << IntFormatSpec(value); - } - - BasicWriter &operator<<(double value) - { - write_double(value, FormatSpec()); - return *this; - } - - /** - \rst - Formats *value* using the general format for floating-point numbers - (``'g'``) and writes it to the stream. - \endrst - */ - BasicWriter &operator<<(long double value) - { - write_double(value, FormatSpec()); - return *this; - } - - /** - Writes a character to the stream. - */ - BasicWriter &operator<<(char value) - { - buffer_.push_back(value); - return *this; - } - - BasicWriter &operator<<( - typename internal::WCharHelper::Supported value) - { - buffer_.push_back(value); - return *this; - } - - /** - \rst - Writes *value* to the stream. - \endrst - */ - BasicWriter &operator<<(fmt::BasicStringRef value) - { - const Char *str = value.data(); - buffer_.append(str, str + value.size()); - return *this; - } - - BasicWriter &operator<<( - typename internal::WCharHelper::Supported value) - { - const char *str = value.data(); - buffer_.append(str, str + value.size()); - return *this; - } - - template - BasicWriter &operator<<(IntFormatSpec spec) - { - internal::CharTraits::convert(FillChar()); - write_int(spec.value(), spec); - return *this; - } - - template - BasicWriter &operator<<(const StrFormatSpec &spec) - { - const StrChar *s = spec.str(); - write_str(s, std::char_traits::length(s), spec); - return *this; - } - - void clear() FMT_NOEXCEPT { buffer_.clear(); } - - Buffer &buffer() FMT_NOEXCEPT { return buffer_; } -}; - -template -template -typename BasicWriter::CharPtr BasicWriter::write_str( - const StrChar *s, std::size_t size, const AlignSpec &spec) -{ - CharPtr out = CharPtr(); - if (spec.width() > size) - { - out = grow_buffer(spec.width()); - Char fill = internal::CharTraits::cast(spec.fill()); - if (spec.align() == ALIGN_RIGHT) - { - std::uninitialized_fill_n(out, spec.width() - size, fill); - out += spec.width() - size; - } - else if (spec.align() == ALIGN_CENTER) - { - out = fill_padding(out, spec.width(), size, fill); - } - else - { - std::uninitialized_fill_n(out + size, spec.width() - size, fill); - } - } - else - { - out = grow_buffer(size); - } - std::uninitialized_copy(s, s + size, out); - return out; -} - -template -template -void BasicWriter::write_str( - const internal::Arg::StringValue &s, const FormatSpec &spec) -{ - // Check if StrChar is convertible to Char. - internal::CharTraits::convert(StrChar()); - if (spec.type_ && spec.type_ != 's') - internal::report_unknown_type(spec.type_, "string"); - const StrChar *str_value = s.value; - std::size_t str_size = s.size; - if (str_size == 0) - { - if (!str_value) - { - FMT_THROW(FormatError("string pointer is null")); - } - } - std::size_t precision = static_cast(spec.precision_); - if (spec.precision_ >= 0 && precision < str_size) - str_size = precision; - write_str(str_value, str_size, spec); -} - -template -typename BasicWriter::CharPtr -BasicWriter::fill_padding( - CharPtr buffer, unsigned total_size, - std::size_t content_size, wchar_t fill) -{ - std::size_t padding = total_size - content_size; - std::size_t left_padding = padding / 2; - Char fill_char = internal::CharTraits::cast(fill); - std::uninitialized_fill_n(buffer, left_padding, fill_char); - buffer += left_padding; - CharPtr content = buffer; - std::uninitialized_fill_n(buffer + content_size, - padding - left_padding, fill_char); - return content; -} - -template -template -typename BasicWriter::CharPtr -BasicWriter::prepare_int_buffer( - unsigned num_digits, const Spec &spec, - const char *prefix, unsigned prefix_size) -{ - unsigned width = spec.width(); - Alignment align = spec.align(); - Char fill = internal::CharTraits::cast(spec.fill()); - if (spec.precision() > static_cast(num_digits)) - { - // Octal prefix '0' is counted as a digit, so ignore it if precision - // is specified. - if (prefix_size > 0 && prefix[prefix_size - 1] == '0') - --prefix_size; - unsigned number_size = - prefix_size + internal::to_unsigned(spec.precision()); - AlignSpec subspec(number_size, '0', ALIGN_NUMERIC); - if (number_size >= width) - return prepare_int_buffer(num_digits, subspec, prefix, prefix_size); - buffer_.reserve(width); - unsigned fill_size = width - number_size; - if (align != ALIGN_LEFT) - { - CharPtr p = grow_buffer(fill_size); - std::uninitialized_fill(p, p + fill_size, fill); - } - CharPtr result = prepare_int_buffer( - num_digits, subspec, prefix, prefix_size); - if (align == ALIGN_LEFT) - { - CharPtr p = grow_buffer(fill_size); - std::uninitialized_fill(p, p + fill_size, fill); - } - return result; - } - unsigned size = prefix_size + num_digits; - if (width <= size) - { - CharPtr p = grow_buffer(size); - std::uninitialized_copy(prefix, prefix + prefix_size, p); - return p + size - 1; - } - CharPtr p = grow_buffer(width); - CharPtr end = p + width; - if (align == ALIGN_LEFT) - { - std::uninitialized_copy(prefix, prefix + prefix_size, p); - p += size; - std::uninitialized_fill(p, end, fill); - } - else if (align == ALIGN_CENTER) - { - p = fill_padding(p, width, size, fill); - std::uninitialized_copy(prefix, prefix + prefix_size, p); - p += size; - } - else - { - if (align == ALIGN_NUMERIC) - { - if (prefix_size != 0) - { - p = std::uninitialized_copy(prefix, prefix + prefix_size, p); - size -= prefix_size; - } - } - else - { - std::uninitialized_copy(prefix, prefix + prefix_size, end - size); - } - std::uninitialized_fill(p, end - size, fill); - p = end; - } - return p - 1; -} - -template -template -void BasicWriter::write_int(T value, Spec spec) -{ - unsigned prefix_size = 0; - typedef typename internal::IntTraits::MainType UnsignedType; - UnsignedType abs_value = static_cast(value); - char prefix[4] = ""; - if (internal::is_negative(value)) - { - prefix[0] = '-'; - ++prefix_size; - abs_value = 0 - abs_value; - } - else if (spec.flag(SIGN_FLAG)) - { - prefix[0] = spec.flag(PLUS_FLAG) ? '+' : ' '; - ++prefix_size; - } - switch (spec.type()) - { - case 0: - case 'd': - { - unsigned num_digits = internal::count_digits(abs_value); - CharPtr p = prepare_int_buffer(num_digits, spec, prefix, prefix_size) + 1; - internal::format_decimal(get(p), abs_value, 0); - break; - } - case 'x': - case 'X': - { - UnsignedType n = abs_value; - if (spec.flag(HASH_FLAG)) - { - prefix[prefix_size++] = '0'; - prefix[prefix_size++] = spec.type(); - } - unsigned num_digits = 0; - do - { - ++num_digits; - } - while ((n >>= 4) != 0); - Char *p = get(prepare_int_buffer( - num_digits, spec, prefix, prefix_size)); - n = abs_value; - const char *digits = spec.type() == 'x' ? - "0123456789abcdef" : "0123456789ABCDEF"; - do - { - *p-- = digits[n & 0xf]; - } - while ((n >>= 4) != 0); - break; - } - case 'b': - case 'B': - { - UnsignedType n = abs_value; - if (spec.flag(HASH_FLAG)) - { - prefix[prefix_size++] = '0'; - prefix[prefix_size++] = spec.type(); - } - unsigned num_digits = 0; - do - { - ++num_digits; - } - while ((n >>= 1) != 0); - Char *p = get(prepare_int_buffer(num_digits, spec, prefix, prefix_size)); - n = abs_value; - do - { - *p-- = static_cast('0' + (n & 1)); - } - while ((n >>= 1) != 0); - break; - } - case 'o': - { - UnsignedType n = abs_value; - if (spec.flag(HASH_FLAG)) - prefix[prefix_size++] = '0'; - unsigned num_digits = 0; - do - { - ++num_digits; - } - while ((n >>= 3) != 0); - Char *p = get(prepare_int_buffer(num_digits, spec, prefix, prefix_size)); - n = abs_value; - do - { - *p-- = static_cast('0' + (n & 7)); - } - while ((n >>= 3) != 0); - break; - } - case 'n': - { - unsigned num_digits = internal::count_digits(abs_value); - fmt::StringRef sep = ""; -#ifndef ANDROID - sep = internal::thousands_sep(std::localeconv()); -#endif - unsigned size = static_cast( - num_digits + sep.size() * ((num_digits - 1) / 3)); - CharPtr p = prepare_int_buffer(size, spec, prefix, prefix_size) + 1; - internal::format_decimal(get(p), abs_value, 0, internal::ThousandsSep(sep)); - break; - } - default: - internal::report_unknown_type( - spec.type(), spec.flag(CHAR_FLAG) ? "char" : "integer"); - break; - } -} - -template -template -void BasicWriter::write_double(T value, const FormatSpec &spec) -{ - // Check type. - char type = spec.type(); - bool upper = false; - switch (type) - { - case 0: - type = 'g'; - break; - case 'e': - case 'f': - case 'g': - case 'a': - break; - case 'F': -#if FMT_MSC_VER - // MSVC's printf doesn't support 'F'. - type = 'f'; -#endif - // Fall through. - case 'E': - case 'G': - case 'A': - upper = true; - break; - default: - internal::report_unknown_type(type, "double"); - break; - } - - char sign = 0; - // Use isnegative instead of value < 0 because the latter is always - // false for NaN. - if (internal::FPUtil::isnegative(static_cast(value))) - { - sign = '-'; - value = -value; - } - else if (spec.flag(SIGN_FLAG)) - { - sign = spec.flag(PLUS_FLAG) ? '+' : ' '; - } - - if (internal::FPUtil::isnotanumber(value)) - { - // Format NaN ourselves because sprintf's output is not consistent - // across platforms. - std::size_t nan_size = 4; - const char *nan = upper ? " NAN" : " nan"; - if (!sign) - { - --nan_size; - ++nan; - } - CharPtr out = write_str(nan, nan_size, spec); - if (sign) - *out = sign; - return; - } - - if (internal::FPUtil::isinfinity(value)) - { - // Format infinity ourselves because sprintf's output is not consistent - // across platforms. - std::size_t inf_size = 4; - const char *inf = upper ? " INF" : " inf"; - if (!sign) - { - --inf_size; - ++inf; - } - CharPtr out = write_str(inf, inf_size, spec); - if (sign) - *out = sign; - return; - } - - std::size_t offset = buffer_.size(); - unsigned width = spec.width(); - if (sign) - { - buffer_.reserve(buffer_.size() + (width > 1u ? width : 1u)); - if (width > 0) - --width; - ++offset; - } - - // Build format string. - enum { MAX_FORMAT_SIZE = 10}; // longest format: %#-*.*Lg - Char format[MAX_FORMAT_SIZE]; - Char *format_ptr = format; - *format_ptr++ = '%'; - unsigned width_for_sprintf = width; - if (spec.flag(HASH_FLAG)) - *format_ptr++ = '#'; - if (spec.align() == ALIGN_CENTER) - { - width_for_sprintf = 0; - } - else - { - if (spec.align() == ALIGN_LEFT) - *format_ptr++ = '-'; - if (width != 0) - *format_ptr++ = '*'; - } - if (spec.precision() >= 0) - { - *format_ptr++ = '.'; - *format_ptr++ = '*'; - } - - append_float_length(format_ptr, value); - *format_ptr++ = type; - *format_ptr = '\0'; - - // Format using snprintf. - Char fill = internal::CharTraits::cast(spec.fill()); - unsigned n = 0; - Char *start = 0; - for (;;) - { - std::size_t buffer_size = buffer_.capacity() - offset; -#if FMT_MSC_VER - // MSVC's vsnprintf_s doesn't work with zero size, so reserve - // space for at least one extra character to make the size non-zero. - // Note that the buffer's capacity will increase by more than 1. - if (buffer_size == 0) - { - buffer_.reserve(offset + 1); - buffer_size = buffer_.capacity() - offset; - } -#endif - start = &buffer_[offset]; - int result = internal::CharTraits::format_float( - start, buffer_size, format, width_for_sprintf, spec.precision(), value); - if (result >= 0) - { - n = internal::to_unsigned(result); - if (offset + n < buffer_.capacity()) - break; // The buffer is large enough - continue with formatting. - buffer_.reserve(offset + n + 1); - } - else - { - // If result is negative we ask to increase the capacity by at least 1, - // but as std::vector, the buffer grows exponentially. - buffer_.reserve(buffer_.capacity() + 1); - } - } - if (sign) - { - if ((spec.align() != ALIGN_RIGHT && spec.align() != ALIGN_DEFAULT) || - *start != ' ') - { - *(start - 1) = sign; - sign = 0; - } - else - { - *(start - 1) = fill; - } - ++n; - } - if (spec.align() == ALIGN_CENTER && spec.width() > n) - { - width = spec.width(); - CharPtr p = grow_buffer(width); - std::memmove(get(p) + (width - n) / 2, get(p), n * sizeof(Char)); - fill_padding(p, spec.width(), n, fill); - return; - } - if (spec.fill() != ' ' || sign) - { - while (*start == ' ') - *start++ = fill; - if (sign) - *(start - 1) = sign; - } - grow_buffer(n); -} - -/** - \rst - This class template provides operations for formatting and writing data - into a character stream. The output is stored in a memory buffer that grows - dynamically. - - You can use one of the following typedefs for common character types - and the standard allocator: - - +---------------+-----------------------------------------------------+ - | Type | Definition | - +===============+=====================================================+ - | MemoryWriter | BasicMemoryWriter> | - +---------------+-----------------------------------------------------+ - | WMemoryWriter | BasicMemoryWriter> | - +---------------+-----------------------------------------------------+ - - **Example**:: - - MemoryWriter out; - out << "The answer is " << 42 << "\n"; - out.write("({:+f}, {:+f})", -3.14, 3.14); - - This will write the following output to the ``out`` object: - - .. code-block:: none - - The answer is 42 - (-3.140000, +3.140000) - - The output can be converted to an ``std::string`` with ``out.str()`` or - accessed as a C string with ``out.c_str()``. - \endrst - */ -template > -class BasicMemoryWriter : public BasicWriter -{ -private: - internal::MemoryBuffer buffer_; - -public: - explicit BasicMemoryWriter(const Allocator& alloc = Allocator()) - : BasicWriter(buffer_), buffer_(alloc) {} - -#if FMT_USE_RVALUE_REFERENCES - /** - \rst - Constructs a :class:`fmt::BasicMemoryWriter` object moving the content - of the other object to it. - \endrst - */ - BasicMemoryWriter(BasicMemoryWriter &&other) - : BasicWriter(buffer_), buffer_(std::move(other.buffer_)) - { - } - - /** - \rst - Moves the content of the other ``BasicMemoryWriter`` object to this one. - \endrst - */ - BasicMemoryWriter &operator=(BasicMemoryWriter &&other) - { - buffer_ = std::move(other.buffer_); - return *this; - } -#endif -}; - -typedef BasicMemoryWriter MemoryWriter; -typedef BasicMemoryWriter WMemoryWriter; - -/** - \rst - This class template provides operations for formatting and writing data - into a fixed-size array. For writing into a dynamically growing buffer - use :class:`fmt::BasicMemoryWriter`. - - Any write method will throw ``std::runtime_error`` if the output doesn't fit - into the array. - - You can use one of the following typedefs for common character types: - - +--------------+---------------------------+ - | Type | Definition | - +==============+===========================+ - | ArrayWriter | BasicArrayWriter | - +--------------+---------------------------+ - | WArrayWriter | BasicArrayWriter | - +--------------+---------------------------+ - \endrst - */ -template -class BasicArrayWriter : public BasicWriter -{ -private: - internal::FixedBuffer buffer_; - -public: - /** - \rst - Constructs a :class:`fmt::BasicArrayWriter` object for *array* of the - given size. - \endrst - */ - BasicArrayWriter(Char *array, std::size_t size) - : BasicWriter(buffer_), buffer_(array, size) {} - - /** - \rst - Constructs a :class:`fmt::BasicArrayWriter` object for *array* of the - size known at compile time. - \endrst - */ - template - explicit BasicArrayWriter(Char (&array)[SIZE]) - : BasicWriter(buffer_), buffer_(array, SIZE) {} -}; - -typedef BasicArrayWriter ArrayWriter; -typedef BasicArrayWriter WArrayWriter; - -// Reports a system error without throwing an exception. -// Can be used to report errors from destructors. -FMT_API void report_system_error(int error_code, - StringRef message) FMT_NOEXCEPT; - -#if FMT_USE_WINDOWS_H - -/** A Windows error. */ -class WindowsError : public SystemError -{ -private: - FMT_API void init(int error_code, CStringRef format_str, ArgList args); - -public: - /** - \rst - Constructs a :class:`fmt::WindowsError` object with the description - of the form - - .. parsed-literal:: - **: ** - - where ** is the formatted message and ** is the - system message corresponding to the error code. - *error_code* is a Windows error code as given by ``GetLastError``. - If *error_code* is not a valid error code such as -1, the system message - will look like "error -1". - - **Example**:: - - // This throws a WindowsError with the description - // cannot open file 'madeup': The system cannot find the file specified. - // or similar (system message may vary). - const char *filename = "madeup"; - LPOFSTRUCT of = LPOFSTRUCT(); - HFILE file = OpenFile(filename, &of, OF_READ); - if (file == HFILE_ERROR) { - throw fmt::WindowsError(GetLastError(), - "cannot open file '{}'", filename); - } - \endrst - */ - WindowsError(int error_code, CStringRef message) - { - init(error_code, message, ArgList()); - } - FMT_VARIADIC_CTOR(WindowsError, init, int, CStringRef) -}; - -// Reports a Windows error without throwing an exception. -// Can be used to report errors from destructors. -FMT_API void report_windows_error(int error_code, - StringRef message) FMT_NOEXCEPT; - -#endif - -enum Color { BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE }; - -/** - Formats a string and prints it to stdout using ANSI escape sequences - to specify color (experimental). - Example: - print_colored(fmt::RED, "Elapsed time: {0:.2f} seconds", 1.23); - */ -FMT_API void print_colored(Color c, CStringRef format, ArgList args); - -/** - \rst - Formats arguments and returns the result as a string. - - **Example**:: - - std::string message = format("The answer is {}", 42); - \endrst -*/ -inline std::string format(CStringRef format_str, ArgList args) -{ - MemoryWriter w; - w.write(format_str, args); - return w.str(); -} - -inline std::wstring format(WCStringRef format_str, ArgList args) -{ - WMemoryWriter w; - w.write(format_str, args); - return w.str(); -} - -/** - \rst - Prints formatted data to the file *f*. - - **Example**:: - - print(stderr, "Don't {}!", "panic"); - \endrst - */ -FMT_API void print(std::FILE *f, CStringRef format_str, ArgList args); - -/** - \rst - Prints formatted data to ``stdout``. - - **Example**:: - - print("Elapsed time: {0:.2f} seconds", 1.23); - \endrst - */ -FMT_API void print(CStringRef format_str, ArgList args); - -/** - Fast integer formatter. - */ -class FormatInt -{ -private: - // Buffer should be large enough to hold all digits (digits10 + 1), - // a sign and a null character. - enum {BUFFER_SIZE = std::numeric_limits::digits10 + 3}; - mutable char buffer_[BUFFER_SIZE]; - char *str_; - - // Formats value in reverse and returns the number of digits. - char *format_decimal(ULongLong value) - { - char *buffer_end = buffer_ + BUFFER_SIZE - 1; - while (value >= 100) - { - // Integer division is slow so do it for a group of two digits instead - // of for every digit. The idea comes from the talk by Alexandrescu - // "Three Optimization Tips for C++". See speed-test for a comparison. - unsigned index = static_cast((value % 100) * 2); - value /= 100; - *--buffer_end = internal::Data::DIGITS[index + 1]; - *--buffer_end = internal::Data::DIGITS[index]; - } - if (value < 10) - { - *--buffer_end = static_cast('0' + value); - return buffer_end; - } - unsigned index = static_cast(value * 2); - *--buffer_end = internal::Data::DIGITS[index + 1]; - *--buffer_end = internal::Data::DIGITS[index]; - return buffer_end; - } - - void FormatSigned(LongLong value) - { - ULongLong abs_value = static_cast(value); - bool negative = value < 0; - if (negative) - abs_value = 0 - abs_value; - str_ = format_decimal(abs_value); - if (negative) - *--str_ = '-'; - } - -public: - explicit FormatInt(int value) - { - FormatSigned(value); - } - explicit FormatInt(long value) - { - FormatSigned(value); - } - explicit FormatInt(LongLong value) - { - FormatSigned(value); - } - explicit FormatInt(unsigned value) : str_(format_decimal(value)) {} - explicit FormatInt(unsigned long value) : str_(format_decimal(value)) {} - explicit FormatInt(ULongLong value) : str_(format_decimal(value)) {} - - /** Returns the number of characters written to the output buffer. */ - std::size_t size() const - { - return internal::to_unsigned(buffer_ - str_ + BUFFER_SIZE - 1); - } - - /** - Returns a pointer to the output buffer content. No terminating null - character is appended. - */ - const char *data() const - { - return str_; - } - - /** - Returns a pointer to the output buffer content with terminating null - character appended. - */ - const char *c_str() const - { - buffer_[BUFFER_SIZE - 1] = '\0'; - return str_; - } - - /** - \rst - Returns the content of the output buffer as an ``std::string``. - \endrst - */ - std::string str() const - { - return std::string(str_, size()); - } -}; - -// Formats a decimal integer value writing into buffer and returns -// a pointer to the end of the formatted string. This function doesn't -// write a terminating null character. -template -inline void format_decimal(char *&buffer, T value) -{ - typedef typename internal::IntTraits::MainType MainType; - MainType abs_value = static_cast(value); - if (internal::is_negative(value)) - { - *buffer++ = '-'; - abs_value = 0 - abs_value; - } - if (abs_value < 100) - { - if (abs_value < 10) - { - *buffer++ = static_cast('0' + abs_value); - return; - } - unsigned index = static_cast(abs_value * 2); - *buffer++ = internal::Data::DIGITS[index]; - *buffer++ = internal::Data::DIGITS[index + 1]; - return; - } - unsigned num_digits = internal::count_digits(abs_value); - internal::format_decimal(buffer, abs_value, num_digits); - buffer += num_digits; -} - -/** - \rst - Returns a named argument for formatting functions. - - **Example**:: - - print("Elapsed time: {s:.2f} seconds", arg("s", 1.23)); - - \endrst - */ -template -inline internal::NamedArg arg(StringRef name, const T &arg) -{ - return internal::NamedArg(name, arg); -} - -template -inline internal::NamedArg arg(WStringRef name, const T &arg) -{ - return internal::NamedArg(name, arg); -} - -// The following two functions are deleted intentionally to disable -// nested named arguments as in ``format("{}", arg("a", arg("b", 42)))``. -template -void arg(StringRef, const internal::NamedArg&) FMT_DELETED_OR_UNDEFINED; -template -void arg(WStringRef, const internal::NamedArg&) FMT_DELETED_OR_UNDEFINED; -} - -#if FMT_GCC_VERSION -// Use the system_header pragma to suppress warnings about variadic macros -// because suppressing -Wvariadic-macros with the diagnostic pragma doesn't -// work. It is used at the end because we want to suppress as little warnings -// as possible. -# pragma GCC system_header -#endif - -// This is used to work around VC++ bugs in handling variadic macros. -#define FMT_EXPAND(args) args - -// Returns the number of arguments. -// Based on https://groups.google.com/forum/#!topic/comp.std.c/d-6Mj5Lko_s. -#define FMT_NARG(...) FMT_NARG_(__VA_ARGS__, FMT_RSEQ_N()) -#define FMT_NARG_(...) FMT_EXPAND(FMT_ARG_N(__VA_ARGS__)) -#define FMT_ARG_N(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, N, ...) N -#define FMT_RSEQ_N() 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 - -#define FMT_FOR_EACH_(N, f, ...) \ - FMT_EXPAND(FMT_CONCAT(FMT_FOR_EACH, N)(f, __VA_ARGS__)) -#define FMT_FOR_EACH(f, ...) \ - FMT_EXPAND(FMT_FOR_EACH_(FMT_NARG(__VA_ARGS__), f, __VA_ARGS__)) - -#define FMT_ADD_ARG_NAME(type, index) type arg##index -#define FMT_GET_ARG_NAME(type, index) arg##index - -#if FMT_USE_VARIADIC_TEMPLATES -# define FMT_VARIADIC_(Char, ReturnType, func, call, ...) \ - template \ - ReturnType func(FMT_FOR_EACH(FMT_ADD_ARG_NAME, __VA_ARGS__), \ - const Args & ... args) { \ - typedef fmt::internal::ArgArray ArgArray; \ - typename ArgArray::Type array{ \ - ArgArray::template make >(args)...}; \ - call(FMT_FOR_EACH(FMT_GET_ARG_NAME, __VA_ARGS__), \ - fmt::ArgList(fmt::internal::make_type(args...), array)); \ - } -#else -// Defines a wrapper for a function taking __VA_ARGS__ arguments -// and n additional arguments of arbitrary types. -# define FMT_WRAP(Char, ReturnType, func, call, n, ...) \ - template \ - inline ReturnType func(FMT_FOR_EACH(FMT_ADD_ARG_NAME, __VA_ARGS__), \ - FMT_GEN(n, FMT_MAKE_ARG)) { \ - fmt::internal::ArgArray::Type arr; \ - FMT_GEN(n, FMT_ASSIGN_##Char); \ - call(FMT_FOR_EACH(FMT_GET_ARG_NAME, __VA_ARGS__), fmt::ArgList( \ - fmt::internal::make_type(FMT_GEN(n, FMT_MAKE_REF2)), arr)); \ - } - -# define FMT_VARIADIC_(Char, ReturnType, func, call, ...) \ - inline ReturnType func(FMT_FOR_EACH(FMT_ADD_ARG_NAME, __VA_ARGS__)) { \ - call(FMT_FOR_EACH(FMT_GET_ARG_NAME, __VA_ARGS__), fmt::ArgList()); \ - } \ - FMT_WRAP(Char, ReturnType, func, call, 1, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 2, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 3, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 4, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 5, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 6, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 7, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 8, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 9, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 10, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 11, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 12, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 13, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 14, __VA_ARGS__) \ - FMT_WRAP(Char, ReturnType, func, call, 15, __VA_ARGS__) -#endif // FMT_USE_VARIADIC_TEMPLATES - -/** - \rst - Defines a variadic function with the specified return type, function name - and argument types passed as variable arguments to this macro. - - **Example**:: - - void print_error(const char *file, int line, const char *format, - fmt::ArgList args) { - fmt::print("{}: {}: ", file, line); - fmt::print(format, args); - } - FMT_VARIADIC(void, print_error, const char *, int, const char *) - - ``FMT_VARIADIC`` is used for compatibility with legacy C++ compilers that - don't implement variadic templates. You don't have to use this macro if - you don't need legacy compiler support and can use variadic templates - directly:: - - template - void print_error(const char *file, int line, const char *format, - const Args & ... args) { - fmt::print("{}: {}: ", file, line); - fmt::print(format, args...); - } - \endrst - */ -#define FMT_VARIADIC(ReturnType, func, ...) \ - FMT_VARIADIC_(char, ReturnType, func, return func, __VA_ARGS__) - -#define FMT_VARIADIC_W(ReturnType, func, ...) \ - FMT_VARIADIC_(wchar_t, ReturnType, func, return func, __VA_ARGS__) - -#define FMT_CAPTURE_ARG_(id, index) ::fmt::arg(#id, id) - -#define FMT_CAPTURE_ARG_W_(id, index) ::fmt::arg(L###id, id) - -/** - \rst - Convenient macro to capture the arguments' names and values into several - ``fmt::arg(name, value)``. - - **Example**:: - - int x = 1, y = 2; - print("point: ({x}, {y})", FMT_CAPTURE(x, y)); - // same as: - // print("point: ({x}, {y})", arg("x", x), arg("y", y)); - - \endrst - */ -#define FMT_CAPTURE(...) FMT_FOR_EACH(FMT_CAPTURE_ARG_, __VA_ARGS__) - -#define FMT_CAPTURE_W(...) FMT_FOR_EACH(FMT_CAPTURE_ARG_W_, __VA_ARGS__) - -namespace fmt -{ -FMT_VARIADIC(std::string, format, CStringRef) -FMT_VARIADIC_W(std::wstring, format, WCStringRef) -FMT_VARIADIC(void, print, CStringRef) -FMT_VARIADIC(void, print, std::FILE *, CStringRef) -FMT_VARIADIC(void, print_colored, Color, CStringRef) - -namespace internal -{ -template -inline bool is_name_start(Char c) -{ - return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c; -} - -// Parses an unsigned integer advancing s to the end of the parsed input. -// This function assumes that the first character of s is a digit. -template -unsigned parse_nonnegative_int(const Char *&s) -{ - assert('0' <= *s && *s <= '9'); - unsigned value = 0; - do - { - unsigned new_value = value * 10 + (*s++ - '0'); - // Check if value wrapped around. - if (new_value < value) - { - value = (std::numeric_limits::max)(); - break; - } - value = new_value; - } - while ('0' <= *s && *s <= '9'); - // Convert to unsigned to prevent a warning. - unsigned max_int = (std::numeric_limits::max)(); - if (value > max_int) - FMT_THROW(FormatError("number is too big")); - return value; -} - -inline void require_numeric_argument(const Arg &arg, char spec) -{ - if (arg.type > Arg::LAST_NUMERIC_TYPE) - { - std::string message = - fmt::format("format specifier '{}' requires numeric argument", spec); - FMT_THROW(fmt::FormatError(message)); - } -} - -template -void check_sign(const Char *&s, const Arg &arg) -{ - char sign = static_cast(*s); - require_numeric_argument(arg, sign); - if (arg.type == Arg::UINT || arg.type == Arg::ULONG_LONG) - { - FMT_THROW(FormatError(fmt::format( - "format specifier '{}' requires signed argument", sign))); - } - ++s; -} -} // namespace internal - -template -inline internal::Arg BasicFormatter::get_arg( - BasicStringRef arg_name, const char *&error) -{ - if (check_no_auto_index(error)) - { - map_.init(args()); - const internal::Arg *arg = map_.find(arg_name); - if (arg) - return *arg; - error = "argument not found"; - } - return internal::Arg(); -} - -template -inline internal::Arg BasicFormatter::parse_arg_index(const Char *&s) -{ - const char *error = 0; - internal::Arg arg = *s < '0' || *s > '9' ? - next_arg(error) : get_arg(internal::parse_nonnegative_int(s), error); - if (error) - { - FMT_THROW(FormatError( - *s != '}' && *s != ':' ? "invalid format string" : error)); - } - return arg; -} - -template -inline internal::Arg BasicFormatter::parse_arg_name(const Char *&s) -{ - assert(internal::is_name_start(*s)); - const Char *start = s; - Char c; - do - { - c = *++s; - } - while (internal::is_name_start(c) || ('0' <= c && c <= '9')); - const char *error = 0; - internal::Arg arg = get_arg(BasicStringRef(start, s - start), error); - if (error) - FMT_THROW(FormatError(error)); - return arg; -} - -template -const Char *BasicFormatter::format( - const Char *&format_str, const internal::Arg &arg) -{ - using internal::Arg; - const Char *s = format_str; - FormatSpec spec; - if (*s == ':') - { - if (arg.type == Arg::CUSTOM) - { - arg.custom.format(this, arg.custom.value, &s); - return s; - } - ++s; - // Parse fill and alignment. - if (Char c = *s) - { - const Char *p = s + 1; - spec.align_ = ALIGN_DEFAULT; - do - { - switch (*p) - { - case '<': - spec.align_ = ALIGN_LEFT; - break; - case '>': - spec.align_ = ALIGN_RIGHT; - break; - case '=': - spec.align_ = ALIGN_NUMERIC; - break; - case '^': - spec.align_ = ALIGN_CENTER; - break; - } - if (spec.align_ != ALIGN_DEFAULT) - { - if (p != s) - { - if (c == '}') break; - if (c == '{') - FMT_THROW(FormatError("invalid fill character '{'")); - s += 2; - spec.fill_ = c; - } - else ++s; - if (spec.align_ == ALIGN_NUMERIC) - require_numeric_argument(arg, '='); - break; - } - } - while (--p >= s); - } - - // Parse sign. - switch (*s) - { - case '+': - check_sign(s, arg); - spec.flags_ |= SIGN_FLAG | PLUS_FLAG; - break; - case '-': - check_sign(s, arg); - spec.flags_ |= MINUS_FLAG; - break; - case ' ': - check_sign(s, arg); - spec.flags_ |= SIGN_FLAG; - break; - } - - if (*s == '#') - { - require_numeric_argument(arg, '#'); - spec.flags_ |= HASH_FLAG; - ++s; - } - - // Parse zero flag. - if (*s == '0') - { - require_numeric_argument(arg, '0'); - spec.align_ = ALIGN_NUMERIC; - spec.fill_ = '0'; - ++s; - } - - // Parse width. - if ('0' <= *s && *s <= '9') - { - spec.width_ = internal::parse_nonnegative_int(s); - } - else if (*s == '{') - { - ++s; - Arg width_arg = internal::is_name_start(*s) ? - parse_arg_name(s) : parse_arg_index(s); - if (*s++ != '}') - FMT_THROW(FormatError("invalid format string")); - ULongLong value = 0; - switch (width_arg.type) - { - case Arg::INT: - if (width_arg.int_value < 0) - FMT_THROW(FormatError("negative width")); - value = width_arg.int_value; - break; - case Arg::UINT: - value = width_arg.uint_value; - break; - case Arg::LONG_LONG: - if (width_arg.long_long_value < 0) - FMT_THROW(FormatError("negative width")); - value = width_arg.long_long_value; - break; - case Arg::ULONG_LONG: - value = width_arg.ulong_long_value; - break; - default: - FMT_THROW(FormatError("width is not integer")); - } - if (value > (std::numeric_limits::max)()) - FMT_THROW(FormatError("number is too big")); - spec.width_ = static_cast(value); - } - - // Parse precision. - if (*s == '.') - { - ++s; - spec.precision_ = 0; - if ('0' <= *s && *s <= '9') - { - spec.precision_ = internal::parse_nonnegative_int(s); - } - else if (*s == '{') - { - ++s; - Arg precision_arg = internal::is_name_start(*s) ? - parse_arg_name(s) : parse_arg_index(s); - if (*s++ != '}') - FMT_THROW(FormatError("invalid format string")); - ULongLong value = 0; - switch (precision_arg.type) - { - case Arg::INT: - if (precision_arg.int_value < 0) - FMT_THROW(FormatError("negative precision")); - value = precision_arg.int_value; - break; - case Arg::UINT: - value = precision_arg.uint_value; - break; - case Arg::LONG_LONG: - if (precision_arg.long_long_value < 0) - FMT_THROW(FormatError("negative precision")); - value = precision_arg.long_long_value; - break; - case Arg::ULONG_LONG: - value = precision_arg.ulong_long_value; - break; - default: - FMT_THROW(FormatError("precision is not integer")); - } - if (value > (std::numeric_limits::max)()) - FMT_THROW(FormatError("number is too big")); - spec.precision_ = static_cast(value); - } - else - { - FMT_THROW(FormatError("missing precision specifier")); - } - if (arg.type <= Arg::LAST_INTEGER_TYPE || arg.type == Arg::POINTER) - { - FMT_THROW(FormatError( - fmt::format("precision not allowed in {} format specifier", - arg.type == Arg::POINTER ? "pointer" : "integer"))); - } - } - - // Parse type. - if (*s != '}' && *s) - spec.type_ = static_cast(*s++); - } - - if (*s++ != '}') - FMT_THROW(FormatError("missing '}' in format string")); - - // Format argument. - ArgFormatter(*this, spec, s - 1).visit(arg); - return s; -} - -template -void BasicFormatter::format(BasicCStringRef format_str) -{ - const Char *s = format_str.c_str(); - const Char *start = s; - while (*s) - { - Char c = *s++; - if (c != '{' && c != '}') continue; - if (*s == c) - { - write(writer_, start, s); - start = ++s; - continue; - } - if (c == '}') - FMT_THROW(FormatError("unmatched '}' in format string")); - write(writer_, start, s - 1); - internal::Arg arg = internal::is_name_start(*s) ? - parse_arg_name(s) : parse_arg_index(s); - start = s = format(s, arg); - } - write(writer_, start, s); -} -} // namespace fmt - -#if FMT_USE_USER_DEFINED_LITERALS -namespace fmt -{ -namespace internal -{ - -template -struct UdlFormat -{ - const Char *str; - - template - auto operator()(Args && ... args) const - -> decltype(format(str, std::forward(args)...)) - { - return format(str, std::forward(args)...); - } -}; - -template -struct UdlArg -{ - const Char *str; - - template - NamedArg operator=(T &&value) const - { - return {str, std::forward(value)}; - } -}; - -} // namespace internal - -inline namespace literals -{ - -/** - \rst - C++11 literal equivalent of :func:`fmt::format`. - - **Example**:: - - using namespace fmt::literals; - std::string message = "The answer is {}"_format(42); - \endrst - */ -inline internal::UdlFormat -operator"" _format(const char *s, std::size_t) -{ - return {s}; -} -inline internal::UdlFormat -operator"" _format(const wchar_t *s, std::size_t) -{ - return {s}; -} - -/** - \rst - C++11 literal equivalent of :func:`fmt::arg`. - - **Example**:: - - using namespace fmt::literals; - print("Elapsed time: {s:.2f} seconds", "s"_a=1.23); - \endrst - */ -inline internal::UdlArg -operator"" _a(const char *s, std::size_t) -{ - return {s}; -} -inline internal::UdlArg -operator"" _a(const wchar_t *s, std::size_t) -{ - return {s}; -} - -} // inline namespace literals -} // namespace fmt -#endif // FMT_USE_USER_DEFINED_LITERALS - -// Restore warnings. -#if FMT_GCC_VERSION >= 406 -# pragma GCC diagnostic pop -#endif - -#if defined(__clang__) && !defined(FMT_ICC_VERSION) -# pragma clang diagnostic pop -#endif - -#ifdef FMT_HEADER_ONLY -# define FMT_FUNC inline -# include "format.cc" -#else -# define FMT_FUNC -#endif - -#endif // FMT_FORMAT_H_ +/* +Formatting library for C++ + +Copyright (c) 2012 - 2016, Victor Zverovich +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +1. Redistributions of source code must retain the above copyright notice, this +list of conditions and the following disclaimer. +2. Redistributions in binary form must reproduce the above copyright notice, +this list of conditions and the following disclaimer in the documentation +and/or other materials provided with the distribution. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR +ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +#ifndef FMT_FORMAT_H_ +#define FMT_FORMAT_H_ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef _SECURE_SCL +# define FMT_SECURE_SCL _SECURE_SCL +#else +# define FMT_SECURE_SCL 0 +#endif + +#if FMT_SECURE_SCL +# include +#endif + +#ifdef _MSC_VER +# define FMT_MSC_VER _MSC_VER +#else +# define FMT_MSC_VER 0 +#endif + +#if FMT_MSC_VER && FMT_MSC_VER <= 1500 +typedef unsigned __int32 uint32_t; +typedef unsigned __int64 uint64_t; +typedef __int64 intmax_t; +#else +#include +#endif + +#if !defined(FMT_HEADER_ONLY) && defined(_WIN32) +# ifdef FMT_EXPORT +# define FMT_API __declspec(dllexport) +# elif defined(FMT_SHARED) +# define FMT_API __declspec(dllimport) +# endif +#endif +#ifndef FMT_API +# define FMT_API +#endif + +#ifdef __GNUC__ +# define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) +# define FMT_GCC_EXTENSION __extension__ +# if FMT_GCC_VERSION >= 406 +# pragma GCC diagnostic push +// Disable the warning about "long long" which is sometimes reported even +// when using __extension__. +# pragma GCC diagnostic ignored "-Wlong-long" +// Disable the warning about declaration shadowing because it affects too +// many valid cases. +# pragma GCC diagnostic ignored "-Wshadow" +// Disable the warning about implicit conversions that may change the sign of +// an integer; silencing it otherwise would require many explicit casts. +# pragma GCC diagnostic ignored "-Wsign-conversion" +# endif +# if __cplusplus >= 201103L || defined __GXX_EXPERIMENTAL_CXX0X__ +# define FMT_HAS_GXX_CXX11 1 +# endif +#else +# define FMT_GCC_EXTENSION +#endif + +#if defined(__INTEL_COMPILER) +# define FMT_ICC_VERSION __INTEL_COMPILER +#elif defined(__ICL) +# define FMT_ICC_VERSION __ICL +#endif + +#if defined(__clang__) && !defined(FMT_ICC_VERSION) +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wdocumentation-unknown-command" +# pragma clang diagnostic ignored "-Wpadded" +#endif + +#ifdef __GNUC_LIBSTD__ +# define FMT_GNUC_LIBSTD_VERSION (__GNUC_LIBSTD__ * 100 + __GNUC_LIBSTD_MINOR__) +#endif + +#ifdef __has_feature +# define FMT_HAS_FEATURE(x) __has_feature(x) +#else +# define FMT_HAS_FEATURE(x) 0 +#endif + +#ifdef __has_builtin +# define FMT_HAS_BUILTIN(x) __has_builtin(x) +#else +# define FMT_HAS_BUILTIN(x) 0 +#endif + +#ifdef __has_cpp_attribute +# define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x) +#else +# define FMT_HAS_CPP_ATTRIBUTE(x) 0 +#endif + +#ifndef FMT_USE_VARIADIC_TEMPLATES +// Variadic templates are available in GCC since version 4.4 +// (http://gcc.gnu.org/projects/cxx0x.html) and in Visual C++ +// since version 2013. +# define FMT_USE_VARIADIC_TEMPLATES \ + (FMT_HAS_FEATURE(cxx_variadic_templates) || \ + (FMT_GCC_VERSION >= 404 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1800) +#endif + +#ifndef FMT_USE_RVALUE_REFERENCES +// Don't use rvalue references when compiling with clang and an old libstdc++ +// as the latter doesn't provide std::move. +# if defined(FMT_GNUC_LIBSTD_VERSION) && FMT_GNUC_LIBSTD_VERSION <= 402 +# define FMT_USE_RVALUE_REFERENCES 0 +# else +# define FMT_USE_RVALUE_REFERENCES \ + (FMT_HAS_FEATURE(cxx_rvalue_references) || \ + (FMT_GCC_VERSION >= 403 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1600) +# endif +#endif + +#if FMT_USE_RVALUE_REFERENCES +# include // for std::move +#endif + +// Check if exceptions are disabled. +#if defined(__GNUC__) && !defined(__EXCEPTIONS) +# define FMT_EXCEPTIONS 0 +#endif +#if FMT_MSC_VER && !_HAS_EXCEPTIONS +# define FMT_EXCEPTIONS 0 +#endif +#ifndef FMT_EXCEPTIONS +# define FMT_EXCEPTIONS 1 +#endif + +#ifndef FMT_THROW +# if FMT_EXCEPTIONS +# define FMT_THROW(x) throw x +# else +# define FMT_THROW(x) assert(false) +# endif +#endif + +// Define FMT_USE_NOEXCEPT to make fmt use noexcept (C++11 feature). +#ifndef FMT_USE_NOEXCEPT +# define FMT_USE_NOEXCEPT 0 +#endif + +#ifndef FMT_NOEXCEPT +# if FMT_EXCEPTIONS +# if FMT_USE_NOEXCEPT || FMT_HAS_FEATURE(cxx_noexcept) || \ + (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || \ + FMT_MSC_VER >= 1900 +# define FMT_NOEXCEPT noexcept +# else +# define FMT_NOEXCEPT throw() +# endif +# else +# define FMT_NOEXCEPT +# endif +#endif + +#ifndef FMT_OVERRIDE +# if FMT_USE_OVERRIDE || FMT_HAS_FEATURE(cxx_override) || \ + (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || \ + FMT_MSC_VER >= 1900 +# define FMT_OVERRIDE override +# else +# define FMT_OVERRIDE +# endif +#endif + + +// A macro to disallow the copy constructor and operator= functions +// This should be used in the private: declarations for a class +#ifndef FMT_USE_DELETED_FUNCTIONS +# define FMT_USE_DELETED_FUNCTIONS 0 +#endif + +#if FMT_USE_DELETED_FUNCTIONS || FMT_HAS_FEATURE(cxx_deleted_functions) || \ + (FMT_GCC_VERSION >= 404 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1800 +# define FMT_DELETED_OR_UNDEFINED = delete +# define FMT_DISALLOW_COPY_AND_ASSIGN(TypeName) \ + TypeName(const TypeName&) = delete; \ + TypeName& operator=(const TypeName&) = delete +#else +# define FMT_DELETED_OR_UNDEFINED +# define FMT_DISALLOW_COPY_AND_ASSIGN(TypeName) \ + TypeName(const TypeName&); \ + TypeName& operator=(const TypeName&) +#endif + +#ifndef FMT_USE_USER_DEFINED_LITERALS +// All compilers which support UDLs also support variadic templates. This +// makes the fmt::literals implementation easier. However, an explicit check +// for variadic templates is added here just in case. +// For Intel's compiler both it and the system gcc/msc must support UDLs. +# define FMT_USE_USER_DEFINED_LITERALS \ + FMT_USE_VARIADIC_TEMPLATES && FMT_USE_RVALUE_REFERENCES && \ + (FMT_HAS_FEATURE(cxx_user_literals) || \ + (FMT_GCC_VERSION >= 407 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900) && \ + (!defined(FMT_ICC_VERSION) || FMT_ICC_VERSION >= 1500) +#endif + +#ifndef FMT_ASSERT +# define FMT_ASSERT(condition, message) assert((condition) && message) +#endif + +#if FMT_GCC_VERSION >= 400 || FMT_HAS_BUILTIN(__builtin_clz) +# define FMT_BUILTIN_CLZ(n) __builtin_clz(n) +#endif + +#if FMT_GCC_VERSION >= 400 || FMT_HAS_BUILTIN(__builtin_clzll) +# define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n) +#endif + +// Some compilers masquerade as both MSVC and GCC-likes or +// otherwise support __builtin_clz and __builtin_clzll, so +// only define FMT_BUILTIN_CLZ using the MSVC intrinsics +// if the clz and clzll builtins are not available. +#if FMT_MSC_VER && !defined(FMT_BUILTIN_CLZLL) +# include // _BitScanReverse, _BitScanReverse64 + +namespace fmt { +namespace internal { +# pragma intrinsic(_BitScanReverse) +inline uint32_t clz(uint32_t x) { + unsigned long r = 0; + _BitScanReverse(&r, x); + + assert(x != 0); + // Static analysis complains about using uninitialized data + // "r", but the only way that can happen is if "x" is 0, + // which the callers guarantee to not happen. +# pragma warning(suppress: 6102) + return 31 - r; +} +# define FMT_BUILTIN_CLZ(n) fmt::internal::clz(n) + +# ifdef _WIN64 +# pragma intrinsic(_BitScanReverse64) +# endif + +inline uint32_t clzll(uint64_t x) { + unsigned long r = 0; +# ifdef _WIN64 + _BitScanReverse64(&r, x); +# else + // Scan the high 32 bits. + if (_BitScanReverse(&r, static_cast(x >> 32))) + return 63 - (r + 32); + + // Scan the low 32 bits. + _BitScanReverse(&r, static_cast(x)); +# endif + + assert(x != 0); + // Static analysis complains about using uninitialized data + // "r", but the only way that can happen is if "x" is 0, + // which the callers guarantee to not happen. +# pragma warning(suppress: 6102) + return 63 - r; +} +# define FMT_BUILTIN_CLZLL(n) fmt::internal::clzll(n) +} +} +#endif + +namespace fmt { +namespace internal { +struct DummyInt { + int data[2]; + operator int() const { + return 0; + } +}; +typedef std::numeric_limits FPUtil; + +// Dummy implementations of system functions such as signbit and ecvt called +// if the latter are not available. +inline DummyInt signbit(...) { + return DummyInt(); +} +inline DummyInt _ecvt_s(...) { + return DummyInt(); +} +inline DummyInt isinf(...) { + return DummyInt(); +} +inline DummyInt _finite(...) { + return DummyInt(); +} +inline DummyInt isnan(...) { + return DummyInt(); +} +inline DummyInt _isnan(...) { + return DummyInt(); +} + +// A helper function to suppress bogus "conditional expression is constant" +// warnings. +template +inline T const_check(T value) { + return value; +} +} +} // namespace fmt + +namespace std { +// Standard permits specialization of std::numeric_limits. This specialization +// is used to resolve ambiguity between isinf and std::isinf in glibc: +// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48891 +// and the same for isnan and signbit. +template <> +class numeric_limits : + public std::numeric_limits { +public: + // Portable version of isinf. + template + static bool isinfinity(T x) { + using namespace fmt::internal; + // The resolution "priority" is: + // isinf macro > std::isinf > ::isinf > fmt::internal::isinf + if (const_check(sizeof(isinf(x)) == sizeof(bool) || + sizeof(isinf(x)) == sizeof(int))) { + return isinf(x) != 0; + } + return !_finite(static_cast(x)); + } + + // Portable version of isnan. + template + static bool isnotanumber(T x) { + using namespace fmt::internal; + if (const_check(sizeof(isnan(x)) == sizeof(bool) || + sizeof(isnan(x)) == sizeof(int))) { + return isnan(x) != 0; + } + return _isnan(static_cast(x)) != 0; + } + + // Portable version of signbit. + static bool isnegative(double x) { + using namespace fmt::internal; + if (const_check(sizeof(signbit(x)) == sizeof(int))) + return signbit(x) != 0; + if (x < 0) return true; + if (!isnotanumber(x)) return false; + int dec = 0, sign = 0; + char buffer[2]; // The buffer size must be >= 2 or _ecvt_s will fail. + _ecvt_s(buffer, sizeof(buffer), x, 0, &dec, &sign); + return sign != 0; + } +}; +} // namespace std + +namespace fmt { + +// Fix the warning about long long on older versions of GCC +// that don't support the diagnostic pragma. +FMT_GCC_EXTENSION typedef long long LongLong; +FMT_GCC_EXTENSION typedef unsigned long long ULongLong; + +#if FMT_USE_RVALUE_REFERENCES +using std::move; +#endif + +template +class BasicWriter; + +typedef BasicWriter Writer; +typedef BasicWriter WWriter; + +template +class ArgFormatter; + +template +class BasicPrintfArgFormatter; + +template > +class BasicFormatter; + +/** +\rst +A string reference. It can be constructed from a C string or ``std::string``. + +You can use one of the following typedefs for common character types: + ++------------+-------------------------+ +| Type | Definition | ++============+=========================+ +| StringRef | BasicStringRef | ++------------+-------------------------+ +| WStringRef | BasicStringRef | ++------------+-------------------------+ + +This class is most useful as a parameter type to allow passing +different types of strings to a function, for example:: + +template +std::string format(StringRef format_str, const Args & ... args); + +format("{}", 42); +format(std::string("{}"), 42); +\endrst +*/ +template +class BasicStringRef { +private: + const Char *data_; + std::size_t size_; + +public: + /** Constructs a string reference object from a C string and a size. */ + BasicStringRef(const Char *s, std::size_t size) : data_(s), size_(size) {} + + /** + \rst + Constructs a string reference object from a C string computing + the size with ``std::char_traits::length``. + \endrst + */ + BasicStringRef(const Char *s) + : data_(s), size_(std::char_traits::length(s)) {} + + /** + \rst + Constructs a string reference from an ``std::string`` object. + \endrst + */ + BasicStringRef(const std::basic_string &s) + : data_(s.c_str()), size_(s.size()) {} + + /** + \rst + Converts a string reference to an ``std::string`` object. + \endrst + */ + std::basic_string to_string() const { + return std::basic_string(data_, size_); + } + + /** Returns a pointer to the string data. */ + const Char *data() const { + return data_; + } + + /** Returns the string size. */ + std::size_t size() const { + return size_; + } + + // Lexicographically compare this string reference to other. + int compare(BasicStringRef other) const { + std::size_t size = size_ < other.size_ ? size_ : other.size_; + int result = std::char_traits::compare(data_, other.data_, size); + if (result == 0) + result = size_ == other.size_ ? 0 : (size_ < other.size_ ? -1 : 1); + return result; + } + + friend bool operator==(BasicStringRef lhs, BasicStringRef rhs) { + return lhs.compare(rhs) == 0; + } + friend bool operator!=(BasicStringRef lhs, BasicStringRef rhs) { + return lhs.compare(rhs) != 0; + } + friend bool operator<(BasicStringRef lhs, BasicStringRef rhs) { + return lhs.compare(rhs) < 0; + } + friend bool operator<=(BasicStringRef lhs, BasicStringRef rhs) { + return lhs.compare(rhs) <= 0; + } + friend bool operator>(BasicStringRef lhs, BasicStringRef rhs) { + return lhs.compare(rhs) > 0; + } + friend bool operator>=(BasicStringRef lhs, BasicStringRef rhs) { + return lhs.compare(rhs) >= 0; + } +}; + +typedef BasicStringRef StringRef; +typedef BasicStringRef WStringRef; + +/** +\rst +A reference to a null terminated string. It can be constructed from a C +string or ``std::string``. + +You can use one of the following typedefs for common character types: + ++-------------+--------------------------+ +| Type | Definition | ++=============+==========================+ +| CStringRef | BasicCStringRef | ++-------------+--------------------------+ +| WCStringRef | BasicCStringRef | ++-------------+--------------------------+ + +This class is most useful as a parameter type to allow passing +different types of strings to a function, for example:: + +template +std::string format(CStringRef format_str, const Args & ... args); + +format("{}", 42); +format(std::string("{}"), 42); +\endrst +*/ +template +class BasicCStringRef { +private: + const Char *data_; + +public: + /** Constructs a string reference object from a C string. */ + BasicCStringRef(const Char *s) : data_(s) {} + + /** + \rst + Constructs a string reference from an ``std::string`` object. + \endrst + */ + BasicCStringRef(const std::basic_string &s) : data_(s.c_str()) {} + + /** Returns the pointer to a C string. */ + const Char *c_str() const { + return data_; + } +}; + +typedef BasicCStringRef CStringRef; +typedef BasicCStringRef WCStringRef; + +/** A formatting error such as invalid format string. */ +class FormatError : public std::runtime_error { +public: + explicit FormatError(CStringRef message) + : std::runtime_error(message.c_str()) {} + ~FormatError() throw(); +}; + +namespace internal { + +// MakeUnsigned::Type gives an unsigned type corresponding to integer type T. +template +struct MakeUnsigned { + typedef T Type; +}; + +#define FMT_SPECIALIZE_MAKE_UNSIGNED(T, U) \ + template <> \ + struct MakeUnsigned { typedef U Type; } + +FMT_SPECIALIZE_MAKE_UNSIGNED(char, unsigned char); +FMT_SPECIALIZE_MAKE_UNSIGNED(signed char, unsigned char); +FMT_SPECIALIZE_MAKE_UNSIGNED(short, unsigned short); +FMT_SPECIALIZE_MAKE_UNSIGNED(int, unsigned); +FMT_SPECIALIZE_MAKE_UNSIGNED(long, unsigned long); +FMT_SPECIALIZE_MAKE_UNSIGNED(LongLong, ULongLong); + +// Casts nonnegative integer to unsigned. +template +inline typename MakeUnsigned::Type to_unsigned(Int value) { + FMT_ASSERT(value >= 0, "negative value"); + return static_cast::Type>(value); +} + +// The number of characters to store in the MemoryBuffer object itself +// to avoid dynamic memory allocation. +enum { INLINE_BUFFER_SIZE = 500 }; + +#if FMT_SECURE_SCL +// Use checked iterator to avoid warnings on MSVC. +template +inline stdext::checked_array_iterator make_ptr(T *ptr, std::size_t size) { + return stdext::checked_array_iterator(ptr, size); +} +#else +template +inline T *make_ptr(T *ptr, std::size_t) { + return ptr; +} +#endif +} // namespace internal + +/** +\rst +A buffer supporting a subset of ``std::vector``'s operations. +\endrst +*/ +template +class Buffer { +private: + FMT_DISALLOW_COPY_AND_ASSIGN(Buffer); + +protected: + T *ptr_; + std::size_t size_; + std::size_t capacity_; + + Buffer(T *ptr = 0, std::size_t capacity = 0) + : ptr_(ptr), size_(0), capacity_(capacity) {} + + /** + \rst + Increases the buffer capacity to hold at least *size* elements updating + ``ptr_`` and ``capacity_``. + \endrst + */ + virtual void grow(std::size_t size) = 0; + +public: + virtual ~Buffer() {} + + /** Returns the size of this buffer. */ + std::size_t size() const { + return size_; + } + + /** Returns the capacity of this buffer. */ + std::size_t capacity() const { + return capacity_; + } + + /** + Resizes the buffer. If T is a POD type new elements may not be initialized. + */ + void resize(std::size_t new_size) { + if (new_size > capacity_) + grow(new_size); + size_ = new_size; + } + + /** + \rst + Reserves space to store at least *capacity* elements. + \endrst + */ + void reserve(std::size_t capacity) { + if (capacity > capacity_) + grow(capacity); + } + + void clear() FMT_NOEXCEPT{ size_ = 0; } + + void push_back(const T &value) { + if (size_ == capacity_) + grow(size_ + 1); + ptr_[size_++] = value; + } + + /** Appends data to the end of the buffer. */ + template + void append(const U *begin, const U *end); + + T &operator[](std::size_t index) { + return ptr_[index]; + } + const T &operator[](std::size_t index) const { + return ptr_[index]; + } +}; + +template +template +void Buffer::append(const U *begin, const U *end) { + std::size_t new_size = size_ + internal::to_unsigned(end - begin); + if (new_size > capacity_) + grow(new_size); + std::uninitialized_copy(begin, end, + internal::make_ptr(ptr_, capacity_) + size_); + size_ = new_size; +} + +namespace internal { + +// A memory buffer for trivially copyable/constructible types with the first +// SIZE elements stored in the object itself. +template > +class MemoryBuffer : private Allocator, public Buffer { +private: + T data_[SIZE]; + + // Deallocate memory allocated by the buffer. + void deallocate() { + if (this->ptr_ != data_) Allocator::deallocate(this->ptr_, this->capacity_); + } + +protected: + void grow(std::size_t size) FMT_OVERRIDE; + +public: + explicit MemoryBuffer(const Allocator &alloc = Allocator()) + : Allocator(alloc), Buffer(data_, SIZE) {} + ~MemoryBuffer() { + deallocate(); + } + +#if FMT_USE_RVALUE_REFERENCES +private: + // Move data from other to this buffer. + void move(MemoryBuffer &other) { + Allocator &this_alloc = *this, &other_alloc = other; + this_alloc = std::move(other_alloc); + this->size_ = other.size_; + this->capacity_ = other.capacity_; + if (other.ptr_ == other.data_) { + this->ptr_ = data_; + std::uninitialized_copy(other.data_, other.data_ + this->size_, + make_ptr(data_, this->capacity_)); + } + else { + this->ptr_ = other.ptr_; + // Set pointer to the inline array so that delete is not called + // when deallocating. + other.ptr_ = other.data_; + } + } + +public: + MemoryBuffer(MemoryBuffer &&other) { + move(other); + } + + MemoryBuffer &operator=(MemoryBuffer &&other) { + assert(this != &other); + deallocate(); + move(other); + return *this; + } +#endif + + // Returns a copy of the allocator associated with this buffer. + Allocator get_allocator() const { + return *this; + } +}; + +template +void MemoryBuffer::grow(std::size_t size) { + std::size_t new_capacity = this->capacity_ + this->capacity_ / 2; + if (size > new_capacity) + new_capacity = size; + T *new_ptr = this->allocate(new_capacity); + // The following code doesn't throw, so the raw pointer above doesn't leak. + std::uninitialized_copy(this->ptr_, this->ptr_ + this->size_, + make_ptr(new_ptr, new_capacity)); + std::size_t old_capacity = this->capacity_; + T *old_ptr = this->ptr_; + this->capacity_ = new_capacity; + this->ptr_ = new_ptr; + // deallocate may throw (at least in principle), but it doesn't matter since + // the buffer already uses the new storage and will deallocate it in case + // of exception. + if (old_ptr != data_) + Allocator::deallocate(old_ptr, old_capacity); +} + +// A fixed-size buffer. +template +class FixedBuffer : public fmt::Buffer { +public: + FixedBuffer(Char *array, std::size_t size) : fmt::Buffer(array, size) {} + +protected: + FMT_API void grow(std::size_t size); +}; + +template +class BasicCharTraits { +public: +#if FMT_SECURE_SCL + typedef stdext::checked_array_iterator CharPtr; +#else + typedef Char *CharPtr; +#endif + static Char cast(int value) { + return static_cast(value); + } +}; + +template +class CharTraits; + +template <> +class CharTraits : public BasicCharTraits { +private: + // Conversion from wchar_t to char is not allowed. + static char convert(wchar_t); + +public: + static char convert(char value) { + return value; + } + + // Formats a floating-point number. + template + FMT_API static int format_float(char *buffer, std::size_t size, + const char *format, unsigned width, int precision, T value); +}; + +template <> +class CharTraits : public BasicCharTraits { +public: + static wchar_t convert(char value) { + return value; + } + static wchar_t convert(wchar_t value) { + return value; + } + + template + FMT_API static int format_float(wchar_t *buffer, std::size_t size, + const wchar_t *format, unsigned width, int precision, T value); +}; + +// Checks if a number is negative - used to avoid warnings. +template +struct SignChecker { + template + static bool is_negative(T value) { + return value < 0; + } +}; + +template <> +struct SignChecker { + template + static bool is_negative(T) { + return false; + } +}; + +// Returns true if value is negative, false otherwise. +// Same as (value < 0) but doesn't produce warnings if T is an unsigned type. +template +inline bool is_negative(T value) { + return SignChecker::is_signed>::is_negative(value); +} + +// Selects uint32_t if FitsIn32Bits is true, uint64_t otherwise. +template +struct TypeSelector { + typedef uint32_t Type; +}; + +template <> +struct TypeSelector { + typedef uint64_t Type; +}; + +template +struct IntTraits { + // Smallest of uint32_t and uint64_t that is large enough to represent + // all values of T. + typedef typename + TypeSelector::digits <= 32>::Type MainType; +}; + +FMT_API void report_unknown_type(char code, const char *type); + +// Static data is placed in this class template to allow header-only +// configuration. +template +struct FMT_API BasicData { + static const uint32_t POWERS_OF_10_32[]; + static const uint64_t POWERS_OF_10_64[]; + static const char DIGITS[]; +}; + +#ifndef FMT_USE_EXTERN_TEMPLATES +// Clang doesn't have a feature check for extern templates so we check +// for variadic templates which were introduced in the same version. +# define FMT_USE_EXTERN_TEMPLATES (__clang__ && FMT_USE_VARIADIC_TEMPLATES) +#endif + +#if FMT_USE_EXTERN_TEMPLATES && !defined(FMT_HEADER_ONLY) +extern template struct BasicData; +#endif + +typedef BasicData<> Data; + +#ifdef FMT_BUILTIN_CLZLL +// Returns the number of decimal digits in n. Leading zeros are not counted +// except for n == 0 in which case count_digits returns 1. +inline unsigned count_digits(uint64_t n) { + // Based on http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog10 + // and the benchmark https://github.com/localvoid/cxx-benchmark-count-digits. + int t = (64 - FMT_BUILTIN_CLZLL(n | 1)) * 1233 >> 12; + return to_unsigned(t) - (n < Data::POWERS_OF_10_64[t]) + 1; +} +#else +// Fallback version of count_digits used when __builtin_clz is not available. +inline unsigned count_digits(uint64_t n) { + unsigned count = 1; + for (;;) { + // Integer division is slow so do it for a group of four digits instead + // of for every digit. The idea comes from the talk by Alexandrescu + // "Three Optimization Tips for C++". See speed-test for a comparison. + if (n < 10) return count; + if (n < 100) return count + 1; + if (n < 1000) return count + 2; + if (n < 10000) return count + 3; + n /= 10000u; + count += 4; + } +} +#endif + +#ifdef FMT_BUILTIN_CLZ +// Optional version of count_digits for better performance on 32-bit platforms. +inline unsigned count_digits(uint32_t n) { + int t = (32 - FMT_BUILTIN_CLZ(n | 1)) * 1233 >> 12; + return to_unsigned(t) - (n < Data::POWERS_OF_10_32[t]) + 1; +} +#endif + +// A functor that doesn't add a thousands separator. +struct NoThousandsSep { + template + void operator()(Char *) {} +}; + +// A functor that adds a thousands separator. +class ThousandsSep { +private: + fmt::StringRef sep_; + + // Index of a decimal digit with the least significant digit having index 0. + unsigned digit_index_; + +public: + explicit ThousandsSep(fmt::StringRef sep) : sep_(sep), digit_index_(0) {} + + template + void operator()(Char *&buffer) { + if (++digit_index_ % 3 != 0) + return; + buffer -= sep_.size(); + std::uninitialized_copy(sep_.data(), sep_.data() + sep_.size(), + internal::make_ptr(buffer, sep_.size())); + } +}; + +// Formats a decimal unsigned integer value writing into buffer. +// thousands_sep is a functor that is called after writing each char to +// add a thousands separator if necessary. +template +inline void format_decimal(Char *buffer, UInt value, unsigned num_digits, + ThousandsSep thousands_sep) { + buffer += num_digits; + while (value >= 100) { + // Integer division is slow so do it for a group of two digits instead + // of for every digit. The idea comes from the talk by Alexandrescu + // "Three Optimization Tips for C++". See speed-test for a comparison. + unsigned index = static_cast((value % 100) * 2); + value /= 100; + *--buffer = Data::DIGITS[index + 1]; + thousands_sep(buffer); + *--buffer = Data::DIGITS[index]; + thousands_sep(buffer); + } + if (value < 10) { + *--buffer = static_cast('0' + value); + return; + } + unsigned index = static_cast(value * 2); + *--buffer = Data::DIGITS[index + 1]; + thousands_sep(buffer); + *--buffer = Data::DIGITS[index]; +} + +template +inline void format_decimal(Char *buffer, UInt value, unsigned num_digits) { + return format_decimal(buffer, value, num_digits, NoThousandsSep()); +} + +#ifndef _WIN32 +# define FMT_USE_WINDOWS_H 0 +#elif !defined(FMT_USE_WINDOWS_H) +# define FMT_USE_WINDOWS_H 1 +#endif + +// Define FMT_USE_WINDOWS_H to 0 to disable use of windows.h. +// All the functionality that relies on it will be disabled too. +#if FMT_USE_WINDOWS_H +// A converter from UTF-8 to UTF-16. +// It is only provided for Windows since other systems support UTF-8 natively. +class UTF8ToUTF16 { +private: + MemoryBuffer buffer_; + +public: + FMT_API explicit UTF8ToUTF16(StringRef s); + operator WStringRef() const { + return WStringRef(&buffer_[0], size()); + } + size_t size() const { + return buffer_.size() - 1; + } + const wchar_t *c_str() const { + return &buffer_[0]; + } + std::wstring str() const { + return std::wstring(&buffer_[0], size()); + } +}; + +// A converter from UTF-16 to UTF-8. +// It is only provided for Windows since other systems support UTF-8 natively. +class UTF16ToUTF8 { +private: + MemoryBuffer buffer_; + +public: + UTF16ToUTF8() {} + FMT_API explicit UTF16ToUTF8(WStringRef s); + operator StringRef() const { + return StringRef(&buffer_[0], size()); + } + size_t size() const { + return buffer_.size() - 1; + } + const char *c_str() const { + return &buffer_[0]; + } + std::string str() const { + return std::string(&buffer_[0], size()); + } + + // Performs conversion returning a system error code instead of + // throwing exception on conversion error. This method may still throw + // in case of memory allocation error. + FMT_API int convert(WStringRef s); +}; + +FMT_API void format_windows_error(fmt::Writer &out, int error_code, + fmt::StringRef message) FMT_NOEXCEPT; +#endif + +// A formatting argument value. +struct Value { + template + struct StringValue { + const Char *value; + std::size_t size; + }; + + typedef void(*FormatFunc)( + void *formatter, const void *arg, void *format_str_ptr); + + struct CustomValue { + const void *value; + FormatFunc format; + }; + + union { + int int_value; + unsigned uint_value; + LongLong long_long_value; + ULongLong ulong_long_value; + double double_value; + long double long_double_value; + const void *pointer; + StringValue string; + StringValue sstring; + StringValue ustring; + StringValue wstring; + CustomValue custom; + }; + + enum Type { + NONE, NAMED_ARG, + // Integer types should go first, + INT, UINT, LONG_LONG, ULONG_LONG, BOOL, CHAR, LAST_INTEGER_TYPE = CHAR, + // followed by floating-point types. + DOUBLE, LONG_DOUBLE, LAST_NUMERIC_TYPE = LONG_DOUBLE, + CSTRING, STRING, WSTRING, POINTER, CUSTOM + }; +}; + +// A formatting argument. It is a trivially copyable/constructible type to +// allow storage in internal::MemoryBuffer. +struct Arg : Value { + Type type; +}; + +template +struct NamedArg; +template +struct NamedArgWithType; + +template +struct Null {}; + +// A helper class template to enable or disable overloads taking wide +// characters and strings in MakeValue. +template +struct WCharHelper { + typedef Null Supported; + typedef T Unsupported; +}; + +template +struct WCharHelper { + typedef T Supported; + typedef Null Unsupported; +}; + +typedef char Yes[1]; +typedef char No[2]; + +template +T &get(); + +// These are non-members to workaround an overload resolution bug in bcc32. +Yes &convert(fmt::ULongLong); +No &convert(...); + +template +struct ConvertToIntImpl { + enum { value = ENABLE_CONVERSION }; +}; + +template +struct ConvertToIntImpl2 { + enum { value = false }; +}; + +template +struct ConvertToIntImpl2 { + enum { + // Don't convert numeric types. + value = ConvertToIntImpl::is_specialized>::value + }; +}; + +template +struct ConvertToInt { + enum { enable_conversion = sizeof(convert(get())) == sizeof(Yes) }; + enum { value = ConvertToIntImpl2::value }; +}; + +#define FMT_DISABLE_CONVERSION_TO_INT(Type) \ + template <> \ + struct ConvertToInt { enum { value = 0 }; } + +// Silence warnings about convering float to int. +FMT_DISABLE_CONVERSION_TO_INT(float); +FMT_DISABLE_CONVERSION_TO_INT(double); +FMT_DISABLE_CONVERSION_TO_INT(long double); + +template +struct EnableIf {}; + +template +struct EnableIf { + typedef T type; +}; + +template +struct Conditional { + typedef T type; +}; + +template +struct Conditional { + typedef F type; +}; + +// For bcc32 which doesn't understand ! in template arguments. +template +struct Not { + enum { value = 0 }; +}; + +template <> +struct Not { + enum { value = 1 }; +}; + +template +struct False { + enum { value = 0 }; +}; + +template struct LConvCheck { + LConvCheck(int) {} +}; + +// Returns the thousands separator for the current locale. +// We check if ``lconv`` contains ``thousands_sep`` because on Android +// ``lconv`` is stubbed as an empty struct. +template +inline StringRef thousands_sep( + LConv *lc, LConvCheck = 0) { + return lc->thousands_sep; +} + +inline fmt::StringRef thousands_sep(...) { + return ""; +} + +#define FMT_CONCAT(a, b) a##b + +#if FMT_GCC_VERSION >= 407 +# define FMT_UNUSED __attribute__((unused)) +#else +# define FMT_UNUSED +#endif + +#ifndef FMT_USE_STATIC_ASSERT +# define FMT_USE_STATIC_ASSERT 0 +#endif + +#if FMT_USE_STATIC_ASSERT || FMT_HAS_FEATURE(cxx_static_assert) || \ + (FMT_GCC_VERSION >= 403 && FMT_HAS_GXX_CXX11) || _MSC_VER >= 1600 +# define FMT_STATIC_ASSERT(cond, message) static_assert(cond, message) +#else +# define FMT_CONCAT_(a, b) FMT_CONCAT(a, b) +# define FMT_STATIC_ASSERT(cond, message) \ + typedef int FMT_CONCAT_(Assert, __LINE__)[(cond) ? 1 : -1] FMT_UNUSED +#endif + +template +void format_arg(Formatter &, const Char *, const T &) { + FMT_STATIC_ASSERT(False::value, + "Cannot format argument. To enable the use of ostream " + "operator<< include fmt/ostream.h. Otherwise provide " + "an overload of format_arg."); +} + +// Makes an Arg object from any type. +template +class MakeValue : public Arg { +public: + typedef typename Formatter::Char Char; + +private: + // The following two methods are private to disallow formatting of + // arbitrary pointers. If you want to output a pointer cast it to + // "void *" or "const void *". In particular, this forbids formatting + // of "[const] volatile char *" which is printed as bool by iostreams. + // Do not implement! + template + MakeValue(const T *value); + template + MakeValue(T *value); + + // The following methods are private to disallow formatting of wide + // characters and strings into narrow strings as in + // fmt::format("{}", L"test"); + // To fix this, use a wide format string: fmt::format(L"{}", L"test"). +#if !FMT_MSC_VER || defined(_NATIVE_WCHAR_T_DEFINED) + MakeValue(typename WCharHelper::Unsupported); +#endif + MakeValue(typename WCharHelper::Unsupported); + MakeValue(typename WCharHelper::Unsupported); + MakeValue(typename WCharHelper::Unsupported); + MakeValue(typename WCharHelper::Unsupported); + + void set_string(StringRef str) { + string.value = str.data(); + string.size = str.size(); + } + + void set_string(WStringRef str) { + wstring.value = str.data(); + wstring.size = str.size(); + } + + // Formats an argument of a custom type, such as a user-defined class. + template + static void format_custom_arg( + void *formatter, const void *arg, void *format_str_ptr) { + format_arg(*static_cast(formatter), + *static_cast(format_str_ptr), + *static_cast(arg)); + } + +public: + MakeValue() {} + +#define FMT_MAKE_VALUE_(Type, field, TYPE, rhs) \ + MakeValue(Type value) { field = rhs; } \ + static uint64_t type(Type) { return Arg::TYPE; } + +#define FMT_MAKE_VALUE(Type, field, TYPE) \ + FMT_MAKE_VALUE_(Type, field, TYPE, value) + + FMT_MAKE_VALUE(bool, int_value, BOOL) + FMT_MAKE_VALUE(short, int_value, INT) + FMT_MAKE_VALUE(unsigned short, uint_value, UINT) + FMT_MAKE_VALUE(int, int_value, INT) + FMT_MAKE_VALUE(unsigned, uint_value, UINT) + + MakeValue(long value) { + // To minimize the number of types we need to deal with, long is + // translated either to int or to long long depending on its size. + if (const_check(sizeof(long) == sizeof(int))) + int_value = static_cast(value); + else + long_long_value = value; + } + static uint64_t type(long) { + return sizeof(long) == sizeof(int) ? Arg::INT : Arg::LONG_LONG; + } + + MakeValue(unsigned long value) { + if (const_check(sizeof(unsigned long) == sizeof(unsigned))) + uint_value = static_cast(value); + else + ulong_long_value = value; + } + static uint64_t type(unsigned long) { + return sizeof(unsigned long) == sizeof(unsigned) ? + Arg::UINT : Arg::ULONG_LONG; + } + + FMT_MAKE_VALUE(LongLong, long_long_value, LONG_LONG) + FMT_MAKE_VALUE(ULongLong, ulong_long_value, ULONG_LONG) + FMT_MAKE_VALUE(float, double_value, DOUBLE) + FMT_MAKE_VALUE(double, double_value, DOUBLE) + FMT_MAKE_VALUE(long double, long_double_value, LONG_DOUBLE) + FMT_MAKE_VALUE(signed char, int_value, INT) + FMT_MAKE_VALUE(unsigned char, uint_value, UINT) + FMT_MAKE_VALUE(char, int_value, CHAR) + +#if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED) + MakeValue(typename WCharHelper::Supported value) { + int_value = value; + } + static uint64_t type(wchar_t) { + return Arg::CHAR; + } +#endif + +#define FMT_MAKE_STR_VALUE(Type, TYPE) \ + MakeValue(Type value) { set_string(value); } \ + static uint64_t type(Type) { return Arg::TYPE; } + + FMT_MAKE_VALUE(char *, string.value, CSTRING) + FMT_MAKE_VALUE(const char *, string.value, CSTRING) + FMT_MAKE_VALUE(signed char *, sstring.value, CSTRING) + FMT_MAKE_VALUE(const signed char *, sstring.value, CSTRING) + FMT_MAKE_VALUE(unsigned char *, ustring.value, CSTRING) + FMT_MAKE_VALUE(const unsigned char *, ustring.value, CSTRING) + FMT_MAKE_STR_VALUE(const std::string &, STRING) + FMT_MAKE_STR_VALUE(StringRef, STRING) + FMT_MAKE_VALUE_(CStringRef, string.value, CSTRING, value.c_str()) + +#define FMT_MAKE_WSTR_VALUE(Type, TYPE) \ + MakeValue(typename WCharHelper::Supported value) { \ + set_string(value); \ + } \ + static uint64_t type(Type) { return Arg::TYPE; } + + FMT_MAKE_WSTR_VALUE(wchar_t *, WSTRING) + FMT_MAKE_WSTR_VALUE(const wchar_t *, WSTRING) + FMT_MAKE_WSTR_VALUE(const std::wstring &, WSTRING) + FMT_MAKE_WSTR_VALUE(WStringRef, WSTRING) + + FMT_MAKE_VALUE(void *, pointer, POINTER) + FMT_MAKE_VALUE(const void *, pointer, POINTER) + + template + MakeValue(const T &value, + typename EnableIf::value>::value, int>::type = 0) { + custom.value = &value; + custom.format = &format_custom_arg; + } + + template + MakeValue(const T &value, + typename EnableIf::value, int>::type = 0) { + int_value = value; + } + + template + static uint64_t type(const T &) { + return ConvertToInt::value ? Arg::INT : Arg::CUSTOM; + } + + // Additional template param `Char_` is needed here because make_type always + // uses char. + template + MakeValue(const NamedArg &value) { + pointer = &value; + } + template + MakeValue(const NamedArgWithType &value) { + pointer = &value; + } + + template + static uint64_t type(const NamedArg &) { + return Arg::NAMED_ARG; + } + template + static uint64_t type(const NamedArgWithType &) { + return Arg::NAMED_ARG; + } +}; + +template +class MakeArg : public Arg { +public: + MakeArg() { + type = Arg::NONE; + } + + template + MakeArg(const T &value) + : Arg(MakeValue(value)) { + type = static_cast(MakeValue::type(value)); + } +}; + +template +struct NamedArg : Arg { + BasicStringRef name; + + template + NamedArg(BasicStringRef argname, const T &value) + : Arg(MakeArg< BasicFormatter >(value)), name(argname) {} +}; + +template +struct NamedArgWithType : NamedArg { + NamedArgWithType(BasicStringRef argname, const T &value) + : NamedArg(argname, value) {} +}; + +class RuntimeError : public std::runtime_error { +protected: + RuntimeError() : std::runtime_error("") {} + ~RuntimeError() throw(); +}; + +template +class ArgMap; +} // namespace internal + +/** An argument list. */ +class ArgList { +private: + // To reduce compiled code size per formatting function call, types of first + // MAX_PACKED_ARGS arguments are passed in the types_ field. + uint64_t types_; + union { + // If the number of arguments is less than MAX_PACKED_ARGS, the argument + // values are stored in values_, otherwise they are stored in args_. + // This is done to reduce compiled code size as storing larger objects + // may require more code (at least on x86-64) even if the same amount of + // data is actually copied to stack. It saves ~10% on the bloat test. + const internal::Value *values_; + const internal::Arg *args_; + }; + + internal::Arg::Type type(unsigned index) const { + return type(types_, index); + } + + template + friend class internal::ArgMap; + +public: + // Maximum number of arguments with packed types. + enum { MAX_PACKED_ARGS = 16 }; + + ArgList() : types_(0) {} + + ArgList(ULongLong types, const internal::Value *values) + : types_(types), values_(values) {} + ArgList(ULongLong types, const internal::Arg *args) + : types_(types), args_(args) {} + + uint64_t types() const { + return types_; + } + + /** Returns the argument at specified index. */ + internal::Arg operator[](unsigned index) const { + using internal::Arg; + Arg arg; + bool use_values = type(MAX_PACKED_ARGS - 1) == Arg::NONE; + if (index < MAX_PACKED_ARGS) { + Arg::Type arg_type = type(index); + internal::Value &val = arg; + if (arg_type != Arg::NONE) + val = use_values ? values_[index] : args_[index]; + arg.type = arg_type; + return arg; + } + if (use_values) { + // The index is greater than the number of arguments that can be stored + // in values, so return a "none" argument. + arg.type = Arg::NONE; + return arg; + } + for (unsigned i = MAX_PACKED_ARGS; i <= index; ++i) { + if (args_[i].type == Arg::NONE) + return args_[i]; + } + return args_[index]; + } + + static internal::Arg::Type type(uint64_t types, unsigned index) { + unsigned shift = index * 4; + uint64_t mask = 0xf; + return static_cast( + (types & (mask << shift)) >> shift); + } +}; + +#define FMT_DISPATCH(call) static_cast(this)->call + +/** +\rst +An argument visitor based on the `curiously recurring template pattern +`_. + +To use `~fmt::ArgVisitor` define a subclass that implements some or all of the +visit methods with the same signatures as the methods in `~fmt::ArgVisitor`, +for example, `~fmt::ArgVisitor::visit_int()`. +Pass the subclass as the *Impl* template parameter. Then calling +`~fmt::ArgVisitor::visit` for some argument will dispatch to a visit method +specific to the argument type. For example, if the argument type is +``double`` then the `~fmt::ArgVisitor::visit_double()` method of a subclass +will be called. If the subclass doesn't contain a method with this signature, +then a corresponding method of `~fmt::ArgVisitor` will be called. + +**Example**:: + +class MyArgVisitor : public fmt::ArgVisitor { +public: +void visit_int(int value) { fmt::print("{}", value); } +void visit_double(double value) { fmt::print("{}", value ); } +}; +\endrst +*/ +template +class ArgVisitor { +private: + typedef internal::Arg Arg; + +public: + void report_unhandled_arg() {} + + Result visit_unhandled_arg() { + FMT_DISPATCH(report_unhandled_arg()); + return Result(); + } + + /** Visits an ``int`` argument. **/ + Result visit_int(int value) { + return FMT_DISPATCH(visit_any_int(value)); + } + + /** Visits a ``long long`` argument. **/ + Result visit_long_long(LongLong value) { + return FMT_DISPATCH(visit_any_int(value)); + } + + /** Visits an ``unsigned`` argument. **/ + Result visit_uint(unsigned value) { + return FMT_DISPATCH(visit_any_int(value)); + } + + /** Visits an ``unsigned long long`` argument. **/ + Result visit_ulong_long(ULongLong value) { + return FMT_DISPATCH(visit_any_int(value)); + } + + /** Visits a ``bool`` argument. **/ + Result visit_bool(bool value) { + return FMT_DISPATCH(visit_any_int(value)); + } + + /** Visits a ``char`` or ``wchar_t`` argument. **/ + Result visit_char(int value) { + return FMT_DISPATCH(visit_any_int(value)); + } + + /** Visits an argument of any integral type. **/ + template + Result visit_any_int(T) { + return FMT_DISPATCH(visit_unhandled_arg()); + } + + /** Visits a ``double`` argument. **/ + Result visit_double(double value) { + return FMT_DISPATCH(visit_any_double(value)); + } + + /** Visits a ``long double`` argument. **/ + Result visit_long_double(long double value) { + return FMT_DISPATCH(visit_any_double(value)); + } + + /** Visits a ``double`` or ``long double`` argument. **/ + template + Result visit_any_double(T) { + return FMT_DISPATCH(visit_unhandled_arg()); + } + + /** Visits a null-terminated C string (``const char *``) argument. **/ + Result visit_cstring(const char *) { + return FMT_DISPATCH(visit_unhandled_arg()); + } + + /** Visits a string argument. **/ + Result visit_string(Arg::StringValue) { + return FMT_DISPATCH(visit_unhandled_arg()); + } + + /** Visits a wide string argument. **/ + Result visit_wstring(Arg::StringValue) { + return FMT_DISPATCH(visit_unhandled_arg()); + } + + /** Visits a pointer argument. **/ + Result visit_pointer(const void *) { + return FMT_DISPATCH(visit_unhandled_arg()); + } + + /** Visits an argument of a custom (user-defined) type. **/ + Result visit_custom(Arg::CustomValue) { + return FMT_DISPATCH(visit_unhandled_arg()); + } + + /** + \rst + Visits an argument dispatching to the appropriate visit method based on + the argument type. For example, if the argument type is ``double`` then + the `~fmt::ArgVisitor::visit_double()` method of the *Impl* class will be + called. + \endrst + */ + Result visit(const Arg &arg) { + switch (arg.type) { + case Arg::NONE: + case Arg::NAMED_ARG: + FMT_ASSERT(false, "invalid argument type"); + break; + case Arg::INT: + return FMT_DISPATCH(visit_int(arg.int_value)); + case Arg::UINT: + return FMT_DISPATCH(visit_uint(arg.uint_value)); + case Arg::LONG_LONG: + return FMT_DISPATCH(visit_long_long(arg.long_long_value)); + case Arg::ULONG_LONG: + return FMT_DISPATCH(visit_ulong_long(arg.ulong_long_value)); + case Arg::BOOL: + return FMT_DISPATCH(visit_bool(arg.int_value != 0)); + case Arg::CHAR: + return FMT_DISPATCH(visit_char(arg.int_value)); + case Arg::DOUBLE: + return FMT_DISPATCH(visit_double(arg.double_value)); + case Arg::LONG_DOUBLE: + return FMT_DISPATCH(visit_long_double(arg.long_double_value)); + case Arg::CSTRING: + return FMT_DISPATCH(visit_cstring(arg.string.value)); + case Arg::STRING: + return FMT_DISPATCH(visit_string(arg.string)); + case Arg::WSTRING: + return FMT_DISPATCH(visit_wstring(arg.wstring)); + case Arg::POINTER: + return FMT_DISPATCH(visit_pointer(arg.pointer)); + case Arg::CUSTOM: + return FMT_DISPATCH(visit_custom(arg.custom)); + } + return Result(); + } +}; + +enum Alignment { + ALIGN_DEFAULT, ALIGN_LEFT, ALIGN_RIGHT, ALIGN_CENTER, ALIGN_NUMERIC +}; + +// Flags. +enum { + SIGN_FLAG = 1, PLUS_FLAG = 2, MINUS_FLAG = 4, HASH_FLAG = 8, + CHAR_FLAG = 0x10 // Argument has char type - used in error reporting. +}; + +// An empty format specifier. +struct EmptySpec {}; + +// A type specifier. +template +struct TypeSpec : EmptySpec { + Alignment align() const { + return ALIGN_DEFAULT; + } + unsigned width() const { + return 0; + } + int precision() const { + return -1; + } + bool flag(unsigned) const { + return false; + } + char type() const { + return TYPE; + } + char fill() const { + return ' '; + } +}; + +// A width specifier. +struct WidthSpec { + unsigned width_; + // Fill is always wchar_t and cast to char if necessary to avoid having + // two specialization of WidthSpec and its subclasses. + wchar_t fill_; + + WidthSpec(unsigned width, wchar_t fill) : width_(width), fill_(fill) {} + + unsigned width() const { + return width_; + } + wchar_t fill() const { + return fill_; + } +}; + +// An alignment specifier. +struct AlignSpec : WidthSpec { + Alignment align_; + + AlignSpec(unsigned width, wchar_t fill, Alignment align = ALIGN_DEFAULT) + : WidthSpec(width, fill), align_(align) {} + + Alignment align() const { + return align_; + } + + int precision() const { + return -1; + } +}; + +// An alignment and type specifier. +template +struct AlignTypeSpec : AlignSpec { + AlignTypeSpec(unsigned width, wchar_t fill) : AlignSpec(width, fill) {} + + bool flag(unsigned) const { + return false; + } + char type() const { + return TYPE; + } +}; + +// A full format specifier. +struct FormatSpec : AlignSpec { + unsigned flags_; + int precision_; + char type_; + + FormatSpec( + unsigned width = 0, char type = 0, wchar_t fill = ' ') + : AlignSpec(width, fill), flags_(0), precision_(-1), type_(type) {} + + bool flag(unsigned f) const { + return (flags_ & f) != 0; + } + int precision() const { + return precision_; + } + char type() const { + return type_; + } +}; + +// An integer format specifier. +template , typename Char = char> +class IntFormatSpec : public SpecT { +private: + T value_; + +public: + IntFormatSpec(T val, const SpecT &spec = SpecT()) + : SpecT(spec), value_(val) {} + + T value() const { + return value_; + } +}; + +// A string format specifier. +template +class StrFormatSpec : public AlignSpec { +private: + const Char *str_; + +public: + template + StrFormatSpec(const Char *str, unsigned width, FillChar fill) + : AlignSpec(width, fill), str_(str) { + internal::CharTraits::convert(FillChar()); + } + + const Char *str() const { + return str_; + } +}; + +/** +Returns an integer format specifier to format the value in base 2. +*/ +IntFormatSpec > bin(int value); + +/** +Returns an integer format specifier to format the value in base 8. +*/ +IntFormatSpec > oct(int value); + +/** +Returns an integer format specifier to format the value in base 16 using +lower-case letters for the digits above 9. +*/ +IntFormatSpec > hex(int value); + +/** +Returns an integer formatter format specifier to format in base 16 using +upper-case letters for the digits above 9. +*/ +IntFormatSpec > hexu(int value); + +/** +\rst +Returns an integer format specifier to pad the formatted argument with the +fill character to the specified width using the default (right) numeric +alignment. + +**Example**:: + +MemoryWriter out; +out << pad(hex(0xcafe), 8, '0'); +// out.str() == "0000cafe" + +\endrst +*/ +template +IntFormatSpec, Char> pad( + int value, unsigned width, Char fill = ' '); + +#define FMT_DEFINE_INT_FORMATTERS(TYPE) \ +inline IntFormatSpec > bin(TYPE value) { \ + return IntFormatSpec >(value, TypeSpec<'b'>()); \ + } \ + \ +inline IntFormatSpec > oct(TYPE value) { \ + return IntFormatSpec >(value, TypeSpec<'o'>()); \ + } \ + \ +inline IntFormatSpec > hex(TYPE value) { \ + return IntFormatSpec >(value, TypeSpec<'x'>()); \ + } \ + \ +inline IntFormatSpec > hexu(TYPE value) { \ + return IntFormatSpec >(value, TypeSpec<'X'>()); \ + } \ + \ +template \ +inline IntFormatSpec > pad( \ + IntFormatSpec > f, unsigned width) { \ + return IntFormatSpec >( \ + f.value(), AlignTypeSpec(width, ' ')); \ + } \ + \ +/* For compatibility with older compilers we provide two overloads for pad, */ \ +/* one that takes a fill character and one that doesn't. In the future this */ \ +/* can be replaced with one overload making the template argument Char */ \ +/* default to char (C++11). */ \ +template \ +inline IntFormatSpec, Char> pad( \ + IntFormatSpec, Char> f, \ + unsigned width, Char fill) { \ + return IntFormatSpec, Char>( \ + f.value(), AlignTypeSpec(width, fill)); \ + } \ + \ +inline IntFormatSpec > pad( \ + TYPE value, unsigned width) { \ + return IntFormatSpec >( \ + value, AlignTypeSpec<0>(width, ' ')); \ + } \ + \ +template \ +inline IntFormatSpec, Char> pad( \ + TYPE value, unsigned width, Char fill) { \ + return IntFormatSpec, Char>( \ + value, AlignTypeSpec<0>(width, fill)); \ + } + +FMT_DEFINE_INT_FORMATTERS(int) +FMT_DEFINE_INT_FORMATTERS(long) +FMT_DEFINE_INT_FORMATTERS(unsigned) +FMT_DEFINE_INT_FORMATTERS(unsigned long) +FMT_DEFINE_INT_FORMATTERS(LongLong) +FMT_DEFINE_INT_FORMATTERS(ULongLong) + +/** +\rst +Returns a string formatter that pads the formatted argument with the fill +character to the specified width using the default (left) string alignment. + +**Example**:: + +std::string s = str(MemoryWriter() << pad("abc", 8)); +// s == "abc " + +\endrst +*/ +template +inline StrFormatSpec pad( + const Char *str, unsigned width, Char fill = ' ') { + return StrFormatSpec(str, width, fill); +} + +inline StrFormatSpec pad( + const wchar_t *str, unsigned width, char fill = ' ') { + return StrFormatSpec(str, width, fill); +} + +namespace internal { + +template +class ArgMap { +private: + typedef std::vector< + std::pair, internal::Arg> > MapType; + typedef typename MapType::value_type Pair; + + MapType map_; + +public: + FMT_API void init(const ArgList &args); + + const internal::Arg* find(const fmt::BasicStringRef &name) const { + // The list is unsorted, so just return the first matching name. + for (typename MapType::const_iterator it = map_.begin(), end = map_.end(); + it != end; ++it) { + if (it->first == name) + return &it->second; + } + return 0; + } +}; + +template +class ArgFormatterBase : public ArgVisitor { +private: + BasicWriter &writer_; + FormatSpec &spec_; + + FMT_DISALLOW_COPY_AND_ASSIGN(ArgFormatterBase); + + void write_pointer(const void *p) { + spec_.flags_ = HASH_FLAG; + spec_.type_ = 'x'; + writer_.write_int(reinterpret_cast(p), spec_); + } + +protected: + BasicWriter &writer() { + return writer_; + } + FormatSpec &spec() { + return spec_; + } + + void write(bool value) { + const char *str_value = value ? "true" : "false"; + Arg::StringValue str = { str_value, std::strlen(str_value) }; + writer_.write_str(str, spec_); + } + + void write(const char *value) { + Arg::StringValue str = { value, value != 0 ? std::strlen(value) : 0 }; + writer_.write_str(str, spec_); + } + +public: + ArgFormatterBase(BasicWriter &w, FormatSpec &s) + : writer_(w), spec_(s) {} + + template + void visit_any_int(T value) { + writer_.write_int(value, spec_); + } + + template + void visit_any_double(T value) { + writer_.write_double(value, spec_); + } + + void visit_bool(bool value) { + if (spec_.type_) + return visit_any_int(value); + write(value); + } + + void visit_char(int value) { + if (spec_.type_ && spec_.type_ != 'c') { + spec_.flags_ |= CHAR_FLAG; + writer_.write_int(value, spec_); + return; + } + if (spec_.align_ == ALIGN_NUMERIC || spec_.flags_ != 0) + FMT_THROW(FormatError("invalid format specifier for char")); + typedef typename BasicWriter::CharPtr CharPtr; + Char fill = internal::CharTraits::cast(spec_.fill()); + CharPtr out = CharPtr(); + const unsigned CHAR_SIZE = 1; + if (spec_.width_ > CHAR_SIZE) { + out = writer_.grow_buffer(spec_.width_); + if (spec_.align_ == ALIGN_RIGHT) { + std::uninitialized_fill_n(out, spec_.width_ - CHAR_SIZE, fill); + out += spec_.width_ - CHAR_SIZE; + } + else if (spec_.align_ == ALIGN_CENTER) { + out = writer_.fill_padding(out, spec_.width_, + internal::const_check(CHAR_SIZE), fill); + } + else { + std::uninitialized_fill_n(out + CHAR_SIZE, + spec_.width_ - CHAR_SIZE, fill); + } + } + else { + out = writer_.grow_buffer(CHAR_SIZE); + } + *out = internal::CharTraits::cast(value); + } + + void visit_cstring(const char *value) { + if (spec_.type_ == 'p') + return write_pointer(value); + write(value); + } + + void visit_string(Arg::StringValue value) { + writer_.write_str(value, spec_); + } + + using ArgVisitor::visit_wstring; + + void visit_wstring(Arg::StringValue value) { + writer_.write_str(value, spec_); + } + + void visit_pointer(const void *value) { + if (spec_.type_ && spec_.type_ != 'p') + report_unknown_type(spec_.type_, "pointer"); + write_pointer(value); + } +}; + +class FormatterBase { +private: + ArgList args_; + int next_arg_index_; + + // Returns the argument with specified index. + FMT_API Arg do_get_arg(unsigned arg_index, const char *&error); + +protected: + const ArgList &args() const { + return args_; + } + + explicit FormatterBase(const ArgList &args) { + args_ = args; + next_arg_index_ = 0; + } + + // Returns the next argument. + Arg next_arg(const char *&error) { + if (next_arg_index_ >= 0) + return do_get_arg(internal::to_unsigned(next_arg_index_++), error); + error = "cannot switch from manual to automatic argument indexing"; + return Arg(); + } + + // Checks if manual indexing is used and returns the argument with + // specified index. + Arg get_arg(unsigned arg_index, const char *&error) { + return check_no_auto_index(error) ? do_get_arg(arg_index, error) : Arg(); + } + + bool check_no_auto_index(const char *&error) { + if (next_arg_index_ > 0) { + error = "cannot switch from automatic to manual argument indexing"; + return false; + } + next_arg_index_ = -1; + return true; + } + + template + void write(BasicWriter &w, const Char *start, const Char *end) { + if (start != end) + w << BasicStringRef(start, internal::to_unsigned(end - start)); + } +}; +} // namespace internal + +/** +\rst +An argument formatter based on the `curiously recurring template pattern +`_. + +To use `~fmt::BasicArgFormatter` define a subclass that implements some or +all of the visit methods with the same signatures as the methods in +`~fmt::ArgVisitor`, for example, `~fmt::ArgVisitor::visit_int()`. +Pass the subclass as the *Impl* template parameter. When a formatting +function processes an argument, it will dispatch to a visit method +specific to the argument type. For example, if the argument type is +``double`` then the `~fmt::ArgVisitor::visit_double()` method of a subclass +will be called. If the subclass doesn't contain a method with this signature, +then a corresponding method of `~fmt::BasicArgFormatter` or its superclass +will be called. +\endrst +*/ +template +class BasicArgFormatter : public internal::ArgFormatterBase { +private: + BasicFormatter &formatter_; + const Char *format_; + +public: + /** + \rst + Constructs an argument formatter object. + *formatter* is a reference to the main formatter object, *spec* contains + format specifier information for standard argument types, and *fmt* points + to the part of the format string being parsed for custom argument types. + \endrst + */ + BasicArgFormatter(BasicFormatter &formatter, + FormatSpec &spec, const Char *fmt) + : internal::ArgFormatterBase(formatter.writer(), spec), + formatter_(formatter), format_(fmt) {} + + /** Formats an argument of a custom (user-defined) type. */ + void visit_custom(internal::Arg::CustomValue c) { + c.format(&formatter_, c.value, &format_); + } +}; + +/** The default argument formatter. */ +template +class ArgFormatter : public BasicArgFormatter, Char> { +public: + /** Constructs an argument formatter object. */ + ArgFormatter(BasicFormatter &formatter, + FormatSpec &spec, const Char *fmt) + : BasicArgFormatter, Char>(formatter, spec, fmt) {} +}; + +/** This template formats data and writes the output to a writer. */ +template +class BasicFormatter : private internal::FormatterBase { +public: + /** The character type for the output. */ + typedef CharType Char; + +private: + BasicWriter &writer_; + internal::ArgMap map_; + + FMT_DISALLOW_COPY_AND_ASSIGN(BasicFormatter); + + using internal::FormatterBase::get_arg; + + // Checks if manual indexing is used and returns the argument with + // specified name. + internal::Arg get_arg(BasicStringRef arg_name, const char *&error); + + // Parses argument index and returns corresponding argument. + internal::Arg parse_arg_index(const Char *&s); + + // Parses argument name and returns corresponding argument. + internal::Arg parse_arg_name(const Char *&s); + +public: + /** + \rst + Constructs a ``BasicFormatter`` object. References to the arguments and + the writer are stored in the formatter object so make sure they have + appropriate lifetimes. + \endrst + */ + BasicFormatter(const ArgList &args, BasicWriter &w) + : internal::FormatterBase(args), writer_(w) {} + + /** Returns a reference to the writer associated with this formatter. */ + BasicWriter &writer() { + return writer_; + } + + /** Formats stored arguments and writes the output to the writer. */ + void format(BasicCStringRef format_str); + + // Formats a single argument and advances format_str, a format string pointer. + const Char *format(const Char *&format_str, const internal::Arg &arg); +}; + +// Generates a comma-separated list with results of applying f to +// numbers 0..n-1. +# define FMT_GEN(n, f) FMT_GEN##n(f) +# define FMT_GEN1(f) f(0) +# define FMT_GEN2(f) FMT_GEN1(f), f(1) +# define FMT_GEN3(f) FMT_GEN2(f), f(2) +# define FMT_GEN4(f) FMT_GEN3(f), f(3) +# define FMT_GEN5(f) FMT_GEN4(f), f(4) +# define FMT_GEN6(f) FMT_GEN5(f), f(5) +# define FMT_GEN7(f) FMT_GEN6(f), f(6) +# define FMT_GEN8(f) FMT_GEN7(f), f(7) +# define FMT_GEN9(f) FMT_GEN8(f), f(8) +# define FMT_GEN10(f) FMT_GEN9(f), f(9) +# define FMT_GEN11(f) FMT_GEN10(f), f(10) +# define FMT_GEN12(f) FMT_GEN11(f), f(11) +# define FMT_GEN13(f) FMT_GEN12(f), f(12) +# define FMT_GEN14(f) FMT_GEN13(f), f(13) +# define FMT_GEN15(f) FMT_GEN14(f), f(14) + +namespace internal { +inline uint64_t make_type() { + return 0; +} + +template +inline uint64_t make_type(const T &arg) { + return MakeValue< BasicFormatter >::type(arg); +} + +template + struct ArgArray; + +template +struct ArgArray { + typedef Value Type[N > 0 ? N : 1]; + +template +static Value make(const T &value) { +#ifdef __clang__ + Value result = MakeValue(value); + // Workaround a bug in Apple LLVM version 4.2 (clang-425.0.28) of clang: + // https://github.com/fmtlib/fmt/issues/276 + (void)result.custom.format; + return result; +#else + return MakeValue(value); +#endif +} + }; + +template +struct ArgArray { + typedef Arg Type[N + 1]; // +1 for the list end Arg::NONE + + template + static Arg make(const T &value) { + return MakeArg(value); + } +}; + +#if FMT_USE_VARIADIC_TEMPLATES +template +inline uint64_t make_type(const Arg &first, const Args & ... tail) { + return make_type(first) | (make_type(tail...) << 4); +} + +#else + +struct ArgType { + uint64_t type; + + ArgType() : type(0) {} + + template + ArgType(const T &arg) : type(make_type(arg)) {} +}; + +# define FMT_ARG_TYPE_DEFAULT(n) ArgType t##n = ArgType() + +inline uint64_t make_type(FMT_GEN15(FMT_ARG_TYPE_DEFAULT)) { + return t0.type | (t1.type << 4) | (t2.type << 8) | (t3.type << 12) | + (t4.type << 16) | (t5.type << 20) | (t6.type << 24) | (t7.type << 28) | + (t8.type << 32) | (t9.type << 36) | (t10.type << 40) | (t11.type << 44) | + (t12.type << 48) | (t13.type << 52) | (t14.type << 56); +} +#endif +} // namespace internal + +# define FMT_MAKE_TEMPLATE_ARG(n) typename T##n +# define FMT_MAKE_ARG_TYPE(n) T##n +# define FMT_MAKE_ARG(n) const T##n &v##n +# define FMT_ASSIGN_char(n) \ + arr[n] = fmt::internal::MakeValue< fmt::BasicFormatter >(v##n) +# define FMT_ASSIGN_wchar_t(n) \ + arr[n] = fmt::internal::MakeValue< fmt::BasicFormatter >(v##n) + +#if FMT_USE_VARIADIC_TEMPLATES +// Defines a variadic function returning void. +# define FMT_VARIADIC_VOID(func, arg_type) \ + template \ + void func(arg_type arg0, const Args & ... args) { \ + typedef fmt::internal::ArgArray ArgArray; \ + typename ArgArray::Type array{ \ + ArgArray::template make >(args)...}; \ + func(arg0, fmt::ArgList(fmt::internal::make_type(args...), array)); \ + } + +// Defines a variadic constructor. +# define FMT_VARIADIC_CTOR(ctor, func, arg0_type, arg1_type) \ + template \ + ctor(arg0_type arg0, arg1_type arg1, const Args & ... args) { \ + typedef fmt::internal::ArgArray ArgArray; \ + typename ArgArray::Type array{ \ + ArgArray::template make >(args)...}; \ + func(arg0, arg1, fmt::ArgList(fmt::internal::make_type(args...), array)); \ + } + +#else + +# define FMT_MAKE_REF(n) \ + fmt::internal::MakeValue< fmt::BasicFormatter >(v##n) +# define FMT_MAKE_REF2(n) v##n + +// Defines a wrapper for a function taking one argument of type arg_type +// and n additional arguments of arbitrary types. +# define FMT_WRAP1(func, arg_type, n) \ + template \ + inline void func(arg_type arg1, FMT_GEN(n, FMT_MAKE_ARG)) { \ + const fmt::internal::ArgArray::Type array = {FMT_GEN(n, FMT_MAKE_REF)}; \ + func(arg1, fmt::ArgList( \ + fmt::internal::make_type(FMT_GEN(n, FMT_MAKE_REF2)), array)); \ + } + +// Emulates a variadic function returning void on a pre-C++11 compiler. +# define FMT_VARIADIC_VOID(func, arg_type) \ + inline void func(arg_type arg) { func(arg, fmt::ArgList()); } \ + FMT_WRAP1(func, arg_type, 1) FMT_WRAP1(func, arg_type, 2) \ + FMT_WRAP1(func, arg_type, 3) FMT_WRAP1(func, arg_type, 4) \ + FMT_WRAP1(func, arg_type, 5) FMT_WRAP1(func, arg_type, 6) \ + FMT_WRAP1(func, arg_type, 7) FMT_WRAP1(func, arg_type, 8) \ + FMT_WRAP1(func, arg_type, 9) FMT_WRAP1(func, arg_type, 10) + +# define FMT_CTOR(ctor, func, arg0_type, arg1_type, n) \ + template \ + ctor(arg0_type arg0, arg1_type arg1, FMT_GEN(n, FMT_MAKE_ARG)) { \ + const fmt::internal::ArgArray::Type array = {FMT_GEN(n, FMT_MAKE_REF)}; \ + func(arg0, arg1, fmt::ArgList( \ + fmt::internal::make_type(FMT_GEN(n, FMT_MAKE_REF2)), array)); \ + } + +// Emulates a variadic constructor on a pre-C++11 compiler. +# define FMT_VARIADIC_CTOR(ctor, func, arg0_type, arg1_type) \ + FMT_CTOR(ctor, func, arg0_type, arg1_type, 1) \ + FMT_CTOR(ctor, func, arg0_type, arg1_type, 2) \ + FMT_CTOR(ctor, func, arg0_type, arg1_type, 3) \ + FMT_CTOR(ctor, func, arg0_type, arg1_type, 4) \ + FMT_CTOR(ctor, func, arg0_type, arg1_type, 5) \ + FMT_CTOR(ctor, func, arg0_type, arg1_type, 6) \ + FMT_CTOR(ctor, func, arg0_type, arg1_type, 7) \ + FMT_CTOR(ctor, func, arg0_type, arg1_type, 8) \ + FMT_CTOR(ctor, func, arg0_type, arg1_type, 9) \ + FMT_CTOR(ctor, func, arg0_type, arg1_type, 10) +#endif + +// Generates a comma-separated list with results of applying f to pairs +// (argument, index). +#define FMT_FOR_EACH1(f, x0) f(x0, 0) +#define FMT_FOR_EACH2(f, x0, x1) \ + FMT_FOR_EACH1(f, x0), f(x1, 1) +#define FMT_FOR_EACH3(f, x0, x1, x2) \ + FMT_FOR_EACH2(f, x0 ,x1), f(x2, 2) +#define FMT_FOR_EACH4(f, x0, x1, x2, x3) \ + FMT_FOR_EACH3(f, x0, x1, x2), f(x3, 3) +#define FMT_FOR_EACH5(f, x0, x1, x2, x3, x4) \ + FMT_FOR_EACH4(f, x0, x1, x2, x3), f(x4, 4) +#define FMT_FOR_EACH6(f, x0, x1, x2, x3, x4, x5) \ + FMT_FOR_EACH5(f, x0, x1, x2, x3, x4), f(x5, 5) +#define FMT_FOR_EACH7(f, x0, x1, x2, x3, x4, x5, x6) \ + FMT_FOR_EACH6(f, x0, x1, x2, x3, x4, x5), f(x6, 6) +#define FMT_FOR_EACH8(f, x0, x1, x2, x3, x4, x5, x6, x7) \ + FMT_FOR_EACH7(f, x0, x1, x2, x3, x4, x5, x6), f(x7, 7) +#define FMT_FOR_EACH9(f, x0, x1, x2, x3, x4, x5, x6, x7, x8) \ + FMT_FOR_EACH8(f, x0, x1, x2, x3, x4, x5, x6, x7), f(x8, 8) +#define FMT_FOR_EACH10(f, x0, x1, x2, x3, x4, x5, x6, x7, x8, x9) \ + FMT_FOR_EACH9(f, x0, x1, x2, x3, x4, x5, x6, x7, x8), f(x9, 9) + +/** +An error returned by an operating system or a language runtime, +for example a file opening error. +*/ +class SystemError : public internal::RuntimeError { +private: + void init(int err_code, CStringRef format_str, ArgList args); + +protected: + int error_code_; + + typedef char Char; // For FMT_VARIADIC_CTOR. + + SystemError() {} + +public: + /** + \rst + Constructs a :class:`fmt::SystemError` object with a description + formatted with `fmt::format_system_error`. *message* and additional + arguments passed into the constructor are formatted similarly to + `fmt::format`. + + **Example**:: + + // This throws a SystemError with the description + // cannot open file 'madeup': No such file or directory + // or similar (system message may vary). + const char *filename = "madeup"; + std::FILE *file = std::fopen(filename, "r"); + if (!file) + throw fmt::SystemError(errno, "cannot open file '{}'", filename); + \endrst + */ + SystemError(int error_code, CStringRef message) { + init(error_code, message, ArgList()); + } + FMT_VARIADIC_CTOR(SystemError, init, int, CStringRef) + + ~SystemError() throw(); + + int error_code() const { + return error_code_; + } +}; + +/** +\rst +Formats an error returned by an operating system or a language runtime, +for example a file opening error, and writes it to *out* in the following +form: + +.. parsed-literal:: +**: ** + +where ** is the passed message and ** is +the system message corresponding to the error code. +*error_code* is a system error code as given by ``errno``. +If *error_code* is not a valid error code such as -1, the system message +may look like "Unknown error -1" and is platform-dependent. +\endrst +*/ +FMT_API void format_system_error(fmt::Writer &out, int error_code, + fmt::StringRef message) FMT_NOEXCEPT; + +/** +\rst +This template provides operations for formatting and writing data into +a character stream. The output is stored in a buffer provided by a subclass +such as :class:`fmt::BasicMemoryWriter`. + +You can use one of the following typedefs for common character types: + ++---------+----------------------+ +| Type | Definition | ++=========+======================+ +| Writer | BasicWriter | ++---------+----------------------+ +| WWriter | BasicWriter | ++---------+----------------------+ + +\endrst +*/ +template +class BasicWriter { +private: + // Output buffer. + Buffer &buffer_; + + FMT_DISALLOW_COPY_AND_ASSIGN(BasicWriter); + + typedef typename internal::CharTraits::CharPtr CharPtr; + +#if FMT_SECURE_SCL + // Returns pointer value. + static Char *get(CharPtr p) { + return p.base(); + } +#else + static Char *get(Char *p) { + return p; + } +#endif + + // Fills the padding around the content and returns the pointer to the + // content area. + static CharPtr fill_padding(CharPtr buffer, + unsigned total_size, std::size_t content_size, wchar_t fill); + + // Grows the buffer by n characters and returns a pointer to the newly + // allocated area. + CharPtr grow_buffer(std::size_t n) { + std::size_t size = buffer_.size(); + buffer_.resize(size + n); + return internal::make_ptr(&buffer_[size], n); + } + + // Writes an unsigned decimal integer. + template + Char *write_unsigned_decimal(UInt value, unsigned prefix_size = 0) { + unsigned num_digits = internal::count_digits(value); + Char *ptr = get(grow_buffer(prefix_size + num_digits)); + internal::format_decimal(ptr + prefix_size, value, num_digits); + return ptr; + } + + // Writes a decimal integer. + template + void write_decimal(Int value) { + typedef typename internal::IntTraits::MainType MainType; + MainType abs_value = static_cast(value); + if (internal::is_negative(value)) { + abs_value = 0 - abs_value; + *write_unsigned_decimal(abs_value, 1) = '-'; + } + else { + write_unsigned_decimal(abs_value, 0); + } + } + + // Prepare a buffer for integer formatting. + CharPtr prepare_int_buffer(unsigned num_digits, + const EmptySpec &, const char *prefix, unsigned prefix_size) { + unsigned size = prefix_size + num_digits; + CharPtr p = grow_buffer(size); + std::uninitialized_copy(prefix, prefix + prefix_size, p); + return p + size - 1; + } + + template + CharPtr prepare_int_buffer(unsigned num_digits, + const Spec &spec, const char *prefix, unsigned prefix_size); + + // Formats an integer. + template + void write_int(T value, Spec spec); + + // Formats a floating-point number (double or long double). + template + void write_double(T value, const FormatSpec &spec); + + // Writes a formatted string. + template + CharPtr write_str(const StrChar *s, std::size_t size, const AlignSpec &spec); + + template + void write_str(const internal::Arg::StringValue &str, + const FormatSpec &spec); + + // This following methods are private to disallow writing wide characters + // and strings to a char stream. If you want to print a wide string as a + // pointer as std::ostream does, cast it to const void*. + // Do not implement! + void operator<<(typename internal::WCharHelper::Unsupported); + void operator<<( + typename internal::WCharHelper::Unsupported); + + // Appends floating-point length specifier to the format string. + // The second argument is only used for overload resolution. + void append_float_length(Char *&format_ptr, long double) { + *format_ptr++ = 'L'; + } + + template + void append_float_length(Char *&, T) {} + + template + friend class internal::ArgFormatterBase; + + template + friend class BasicPrintfArgFormatter; + +protected: + /** + Constructs a ``BasicWriter`` object. + */ + explicit BasicWriter(Buffer &b) : buffer_(b) {} + +public: + /** + \rst + Destroys a ``BasicWriter`` object. + \endrst + */ + virtual ~BasicWriter() {} + + /** + Returns the total number of characters written. + */ + std::size_t size() const { + return buffer_.size(); + } + + /** + Returns a pointer to the output buffer content. No terminating null + character is appended. + */ + const Char *data() const FMT_NOEXCEPT { + return &buffer_[0]; + } + + /** + Returns a pointer to the output buffer content with terminating null + character appended. + */ + const Char *c_str() const { + std::size_t size = buffer_.size(); + buffer_.reserve(size + 1); + buffer_[size] = '\0'; + return &buffer_[0]; + } + + /** + \rst + Returns the content of the output buffer as an `std::string`. + \endrst + */ + std::basic_string str() const { + return std::basic_string(&buffer_[0], buffer_.size()); + } + + /** + \rst + Writes formatted data. + + *args* is an argument list representing arbitrary arguments. + + **Example**:: + + MemoryWriter out; + out.write("Current point:\n"); + out.write("({:+f}, {:+f})", -3.14, 3.14); + + This will write the following output to the ``out`` object: + + .. code-block:: none + + Current point: + (-3.140000, +3.140000) + + The output can be accessed using :func:`data()`, :func:`c_str` or + :func:`str` methods. + + See also :ref:`syntax`. + \endrst + */ + void write(BasicCStringRef format, ArgList args) { + BasicFormatter(args, *this).format(format); + } + FMT_VARIADIC_VOID(write, BasicCStringRef) + + BasicWriter &operator<<(int value) { + write_decimal(value); + return *this; + } + BasicWriter &operator<<(unsigned value) { + return *this << IntFormatSpec(value); + } + BasicWriter &operator<<(long value) { + write_decimal(value); + return *this; + } + BasicWriter &operator<<(unsigned long value) { + return *this << IntFormatSpec(value); + } + BasicWriter &operator<<(LongLong value) { + write_decimal(value); + return *this; + } + + /** + \rst + Formats *value* and writes it to the stream. + \endrst + */ + BasicWriter &operator<<(ULongLong value) { + return *this << IntFormatSpec(value); + } + + BasicWriter &operator<<(double value) { + write_double(value, FormatSpec()); + return *this; + } + + /** + \rst + Formats *value* using the general format for floating-point numbers + (``'g'``) and writes it to the stream. + \endrst + */ + BasicWriter &operator<<(long double value) { + write_double(value, FormatSpec()); + return *this; + } + + /** + Writes a character to the stream. + */ + BasicWriter &operator<<(char value) { + buffer_.push_back(value); + return *this; + } + + BasicWriter &operator<<( + typename internal::WCharHelper::Supported value) { + buffer_.push_back(value); + return *this; + } + + /** + \rst + Writes *value* to the stream. + \endrst + */ + BasicWriter &operator<<(fmt::BasicStringRef value) { + const Char *str = value.data(); + buffer_.append(str, str + value.size()); + return *this; + } + + BasicWriter &operator<<( + typename internal::WCharHelper::Supported value) { + const char *str = value.data(); + buffer_.append(str, str + value.size()); + return *this; + } + + template + BasicWriter &operator<<(IntFormatSpec spec) { + internal::CharTraits::convert(FillChar()); + write_int(spec.value(), spec); + return *this; + } + + template + BasicWriter &operator<<(const StrFormatSpec &spec) { + const StrChar *s = spec.str(); + write_str(s, std::char_traits::length(s), spec); + return *this; + } + + void clear() FMT_NOEXCEPT{ buffer_.clear(); } + + Buffer &buffer() FMT_NOEXCEPT{ return buffer_; } +}; + +template +template +typename BasicWriter::CharPtr BasicWriter::write_str( + const StrChar *s, std::size_t size, const AlignSpec &spec) { + CharPtr out = CharPtr(); + if (spec.width() > size) { + out = grow_buffer(spec.width()); + Char fill = internal::CharTraits::cast(spec.fill()); + if (spec.align() == ALIGN_RIGHT) { + std::uninitialized_fill_n(out, spec.width() - size, fill); + out += spec.width() - size; + } + else if (spec.align() == ALIGN_CENTER) { + out = fill_padding(out, spec.width(), size, fill); + } + else { + std::uninitialized_fill_n(out + size, spec.width() - size, fill); + } + } + else { + out = grow_buffer(size); + } + std::uninitialized_copy(s, s + size, out); + return out; +} + +template +template +void BasicWriter::write_str( + const internal::Arg::StringValue &s, const FormatSpec &spec) { + // Check if StrChar is convertible to Char. + internal::CharTraits::convert(StrChar()); + if (spec.type_ && spec.type_ != 's') + internal::report_unknown_type(spec.type_, "string"); + const StrChar *str_value = s.value; + std::size_t str_size = s.size; + if (str_size == 0) { + if (!str_value) { + FMT_THROW(FormatError("string pointer is null")); + } + } + std::size_t precision = static_cast(spec.precision_); + if (spec.precision_ >= 0 && precision < str_size) + str_size = precision; + write_str(str_value, str_size, spec); +} + +template +typename BasicWriter::CharPtr +BasicWriter::fill_padding( + CharPtr buffer, unsigned total_size, + std::size_t content_size, wchar_t fill) { + std::size_t padding = total_size - content_size; + std::size_t left_padding = padding / 2; + Char fill_char = internal::CharTraits::cast(fill); + std::uninitialized_fill_n(buffer, left_padding, fill_char); + buffer += left_padding; + CharPtr content = buffer; + std::uninitialized_fill_n(buffer + content_size, + padding - left_padding, fill_char); + return content; +} + +template +template +typename BasicWriter::CharPtr +BasicWriter::prepare_int_buffer( + unsigned num_digits, const Spec &spec, + const char *prefix, unsigned prefix_size) { + unsigned width = spec.width(); + Alignment align = spec.align(); + Char fill = internal::CharTraits::cast(spec.fill()); + if (spec.precision() > static_cast(num_digits)) { + // Octal prefix '0' is counted as a digit, so ignore it if precision + // is specified. + if (prefix_size > 0 && prefix[prefix_size - 1] == '0') + --prefix_size; + unsigned number_size = + prefix_size + internal::to_unsigned(spec.precision()); + AlignSpec subspec(number_size, '0', ALIGN_NUMERIC); + if (number_size >= width) + return prepare_int_buffer(num_digits, subspec, prefix, prefix_size); + buffer_.reserve(width); + unsigned fill_size = width - number_size; + if (align != ALIGN_LEFT) { + CharPtr p = grow_buffer(fill_size); + std::uninitialized_fill(p, p + fill_size, fill); + } + CharPtr result = prepare_int_buffer( + num_digits, subspec, prefix, prefix_size); + if (align == ALIGN_LEFT) { + CharPtr p = grow_buffer(fill_size); + std::uninitialized_fill(p, p + fill_size, fill); + } + return result; + } + unsigned size = prefix_size + num_digits; + if (width <= size) { + CharPtr p = grow_buffer(size); + std::uninitialized_copy(prefix, prefix + prefix_size, p); + return p + size - 1; + } + CharPtr p = grow_buffer(width); + CharPtr end = p + width; + if (align == ALIGN_LEFT) { + std::uninitialized_copy(prefix, prefix + prefix_size, p); + p += size; + std::uninitialized_fill(p, end, fill); + } + else if (align == ALIGN_CENTER) { + p = fill_padding(p, width, size, fill); + std::uninitialized_copy(prefix, prefix + prefix_size, p); + p += size; + } + else { + if (align == ALIGN_NUMERIC) { + if (prefix_size != 0) { + p = std::uninitialized_copy(prefix, prefix + prefix_size, p); + size -= prefix_size; + } + } + else { + std::uninitialized_copy(prefix, prefix + prefix_size, end - size); + } + std::uninitialized_fill(p, end - size, fill); + p = end; + } + return p - 1; +} + +template +template +void BasicWriter::write_int(T value, Spec spec) { + unsigned prefix_size = 0; + typedef typename internal::IntTraits::MainType UnsignedType; + UnsignedType abs_value = static_cast(value); + char prefix[4] = ""; + if (internal::is_negative(value)) { + prefix[0] = '-'; + ++prefix_size; + abs_value = 0 - abs_value; + } + else if (spec.flag(SIGN_FLAG)) { + prefix[0] = spec.flag(PLUS_FLAG) ? '+' : ' '; + ++prefix_size; + } + switch (spec.type()) { + case 0: + case 'd': { + unsigned num_digits = internal::count_digits(abs_value); + CharPtr p = prepare_int_buffer(num_digits, spec, prefix, prefix_size) + 1; + internal::format_decimal(get(p), abs_value, 0); + break; + } + case 'x': + case 'X': { + UnsignedType n = abs_value; + if (spec.flag(HASH_FLAG)) { + prefix[prefix_size++] = '0'; + prefix[prefix_size++] = spec.type(); + } + unsigned num_digits = 0; + do { + ++num_digits; + } while ((n >>= 4) != 0); + Char *p = get(prepare_int_buffer( + num_digits, spec, prefix, prefix_size)); + n = abs_value; + const char *digits = spec.type() == 'x' ? + "0123456789abcdef" : "0123456789ABCDEF"; + do { + *p-- = digits[n & 0xf]; + } while ((n >>= 4) != 0); + break; + } + case 'b': + case 'B': { + UnsignedType n = abs_value; + if (spec.flag(HASH_FLAG)) { + prefix[prefix_size++] = '0'; + prefix[prefix_size++] = spec.type(); + } + unsigned num_digits = 0; + do { + ++num_digits; + } while ((n >>= 1) != 0); + Char *p = get(prepare_int_buffer(num_digits, spec, prefix, prefix_size)); + n = abs_value; + do { + *p-- = static_cast('0' + (n & 1)); + } while ((n >>= 1) != 0); + break; + } + case 'o': { + UnsignedType n = abs_value; + if (spec.flag(HASH_FLAG)) + prefix[prefix_size++] = '0'; + unsigned num_digits = 0; + do { + ++num_digits; + } while ((n >>= 3) != 0); + Char *p = get(prepare_int_buffer(num_digits, spec, prefix, prefix_size)); + n = abs_value; + do { + *p-- = static_cast('0' + (n & 7)); + } while ((n >>= 3) != 0); + break; + } + case 'n': { + unsigned num_digits = internal::count_digits(abs_value); + fmt::StringRef sep = ""; +#ifndef ANDROID + sep = internal::thousands_sep(std::localeconv()); +#endif + unsigned size = static_cast( + num_digits + sep.size() * ((num_digits - 1) / 3)); + CharPtr p = prepare_int_buffer(size, spec, prefix, prefix_size) + 1; + internal::format_decimal(get(p), abs_value, 0, internal::ThousandsSep(sep)); + break; + } + default: + internal::report_unknown_type( + spec.type(), spec.flag(CHAR_FLAG) ? "char" : "integer"); + break; + } +} + +template +template +void BasicWriter::write_double(T value, const FormatSpec &spec) { + // Check type. + char type = spec.type(); + bool upper = false; + switch (type) { + case 0: + type = 'g'; + break; + case 'e': + case 'f': + case 'g': + case 'a': + break; + case 'F': +#if FMT_MSC_VER + // MSVC's printf doesn't support 'F'. + type = 'f'; +#endif + // Fall through. + case 'E': + case 'G': + case 'A': + upper = true; + break; + default: + internal::report_unknown_type(type, "double"); + break; + } + + char sign = 0; + // Use isnegative instead of value < 0 because the latter is always + // false for NaN. + if (internal::FPUtil::isnegative(static_cast(value))) { + sign = '-'; + value = -value; + } + else if (spec.flag(SIGN_FLAG)) { + sign = spec.flag(PLUS_FLAG) ? '+' : ' '; + } + + if (internal::FPUtil::isnotanumber(value)) { + // Format NaN ourselves because sprintf's output is not consistent + // across platforms. + std::size_t nan_size = 4; + const char *nan = upper ? " NAN" : " nan"; + if (!sign) { + --nan_size; + ++nan; + } + CharPtr out = write_str(nan, nan_size, spec); + if (sign) + *out = sign; + return; + } + + if (internal::FPUtil::isinfinity(value)) { + // Format infinity ourselves because sprintf's output is not consistent + // across platforms. + std::size_t inf_size = 4; + const char *inf = upper ? " INF" : " inf"; + if (!sign) { + --inf_size; + ++inf; + } + CharPtr out = write_str(inf, inf_size, spec); + if (sign) + *out = sign; + return; + } + + std::size_t offset = buffer_.size(); + unsigned width = spec.width(); + if (sign) { + buffer_.reserve(buffer_.size() + (width > 1u ? width : 1u)); + if (width > 0) + --width; + ++offset; + } + + // Build format string. + enum { MAX_FORMAT_SIZE = 10 }; // longest format: %#-*.*Lg + Char format[MAX_FORMAT_SIZE]; + Char *format_ptr = format; + *format_ptr++ = '%'; + unsigned width_for_sprintf = width; + if (spec.flag(HASH_FLAG)) + *format_ptr++ = '#'; + if (spec.align() == ALIGN_CENTER) { + width_for_sprintf = 0; + } + else { + if (spec.align() == ALIGN_LEFT) + *format_ptr++ = '-'; + if (width != 0) + *format_ptr++ = '*'; + } + if (spec.precision() >= 0) { + *format_ptr++ = '.'; + *format_ptr++ = '*'; + } + + append_float_length(format_ptr, value); + *format_ptr++ = type; + *format_ptr = '\0'; + + // Format using snprintf. + Char fill = internal::CharTraits::cast(spec.fill()); + unsigned n = 0; + Char *start = 0; + for (;;) { + std::size_t buffer_size = buffer_.capacity() - offset; +#if FMT_MSC_VER + // MSVC's vsnprintf_s doesn't work with zero size, so reserve + // space for at least one extra character to make the size non-zero. + // Note that the buffer's capacity will increase by more than 1. + if (buffer_size == 0) { + buffer_.reserve(offset + 1); + buffer_size = buffer_.capacity() - offset; + } +#endif + start = &buffer_[offset]; + int result = internal::CharTraits::format_float( + start, buffer_size, format, width_for_sprintf, spec.precision(), value); + if (result >= 0) { + n = internal::to_unsigned(result); + if (offset + n < buffer_.capacity()) + break; // The buffer is large enough - continue with formatting. + buffer_.reserve(offset + n + 1); + } + else { + // If result is negative we ask to increase the capacity by at least 1, + // but as std::vector, the buffer grows exponentially. + buffer_.reserve(buffer_.capacity() + 1); + } + } + if (sign) { + if ((spec.align() != ALIGN_RIGHT && spec.align() != ALIGN_DEFAULT) || + *start != ' ') { + *(start - 1) = sign; + sign = 0; + } + else { + *(start - 1) = fill; + } + ++n; + } + if (spec.align() == ALIGN_CENTER && spec.width() > n) { + width = spec.width(); + CharPtr p = grow_buffer(width); + std::memmove(get(p) + (width - n) / 2, get(p), n * sizeof(Char)); + fill_padding(p, spec.width(), n, fill); + return; + } + if (spec.fill() != ' ' || sign) { + while (*start == ' ') + *start++ = fill; + if (sign) + *(start - 1) = sign; + } + grow_buffer(n); +} + +/** +\rst +This class template provides operations for formatting and writing data +into a character stream. The output is stored in a memory buffer that grows +dynamically. + +You can use one of the following typedefs for common character types +and the standard allocator: + ++---------------+-----------------------------------------------------+ +| Type | Definition | ++===============+=====================================================+ +| MemoryWriter | BasicMemoryWriter> | ++---------------+-----------------------------------------------------+ +| WMemoryWriter | BasicMemoryWriter> | ++---------------+-----------------------------------------------------+ + +**Example**:: + +MemoryWriter out; +out << "The answer is " << 42 << "\n"; +out.write("({:+f}, {:+f})", -3.14, 3.14); + +This will write the following output to the ``out`` object: + +.. code-block:: none + +The answer is 42 +(-3.140000, +3.140000) + +The output can be converted to an ``std::string`` with ``out.str()`` or +accessed as a C string with ``out.c_str()``. +\endrst +*/ +template > +class BasicMemoryWriter : public BasicWriter { +private: + internal::MemoryBuffer buffer_; + +public: + explicit BasicMemoryWriter(const Allocator& alloc = Allocator()) + : BasicWriter(buffer_), buffer_(alloc) {} + +#if FMT_USE_RVALUE_REFERENCES + /** + \rst + Constructs a :class:`fmt::BasicMemoryWriter` object moving the content + of the other object to it. + \endrst + */ + BasicMemoryWriter(BasicMemoryWriter &&other) + : BasicWriter(buffer_), buffer_(std::move(other.buffer_)) { + } + + /** + \rst + Moves the content of the other ``BasicMemoryWriter`` object to this one. + \endrst + */ + BasicMemoryWriter &operator=(BasicMemoryWriter &&other) { + buffer_ = std::move(other.buffer_); + return *this; + } +#endif +}; + +typedef BasicMemoryWriter MemoryWriter; +typedef BasicMemoryWriter WMemoryWriter; + +/** +\rst +This class template provides operations for formatting and writing data +into a fixed-size array. For writing into a dynamically growing buffer +use :class:`fmt::BasicMemoryWriter`. + +Any write method will throw ``std::runtime_error`` if the output doesn't fit +into the array. + +You can use one of the following typedefs for common character types: + ++--------------+---------------------------+ +| Type | Definition | ++==============+===========================+ +| ArrayWriter | BasicArrayWriter | ++--------------+---------------------------+ +| WArrayWriter | BasicArrayWriter | ++--------------+---------------------------+ +\endrst +*/ +template +class BasicArrayWriter : public BasicWriter { +private: + internal::FixedBuffer buffer_; + +public: + /** + \rst + Constructs a :class:`fmt::BasicArrayWriter` object for *array* of the + given size. + \endrst + */ + BasicArrayWriter(Char *array, std::size_t size) + : BasicWriter(buffer_), buffer_(array, size) {} + + /** + \rst + Constructs a :class:`fmt::BasicArrayWriter` object for *array* of the + size known at compile time. + \endrst + */ + template + explicit BasicArrayWriter(Char(&array)[SIZE]) + : BasicWriter(buffer_), buffer_(array, SIZE) {} +}; + +typedef BasicArrayWriter ArrayWriter; +typedef BasicArrayWriter WArrayWriter; + +// Reports a system error without throwing an exception. +// Can be used to report errors from destructors. +FMT_API void report_system_error(int error_code, + StringRef message) FMT_NOEXCEPT; + +#if FMT_USE_WINDOWS_H + +/** A Windows error. */ +class WindowsError : public SystemError { +private: + FMT_API void init(int error_code, CStringRef format_str, ArgList args); + +public: + /** + \rst + Constructs a :class:`fmt::WindowsError` object with the description + of the form + + .. parsed-literal:: + **: ** + + where ** is the formatted message and ** is the + system message corresponding to the error code. + *error_code* is a Windows error code as given by ``GetLastError``. + If *error_code* is not a valid error code such as -1, the system message + will look like "error -1". + + **Example**:: + + // This throws a WindowsError with the description + // cannot open file 'madeup': The system cannot find the file specified. + // or similar (system message may vary). + const char *filename = "madeup"; + LPOFSTRUCT of = LPOFSTRUCT(); + HFILE file = OpenFile(filename, &of, OF_READ); + if (file == HFILE_ERROR) { + throw fmt::WindowsError(GetLastError(), + "cannot open file '{}'", filename); + } + \endrst + */ + WindowsError(int error_code, CStringRef message) { + init(error_code, message, ArgList()); + } + FMT_VARIADIC_CTOR(WindowsError, init, int, CStringRef) +}; + +// Reports a Windows error without throwing an exception. +// Can be used to report errors from destructors. +FMT_API void report_windows_error(int error_code, + StringRef message) FMT_NOEXCEPT; + +#endif + +enum Color { BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE }; + +/** +Formats a string and prints it to stdout using ANSI escape sequences +to specify color (experimental). +Example: +print_colored(fmt::RED, "Elapsed time: {0:.2f} seconds", 1.23); +*/ +FMT_API void print_colored(Color c, CStringRef format, ArgList args); + +/** +\rst +Formats arguments and returns the result as a string. + +**Example**:: + +std::string message = format("The answer is {}", 42); +\endrst +*/ +inline std::string format(CStringRef format_str, ArgList args) { + MemoryWriter w; + w.write(format_str, args); + return w.str(); +} + +inline std::wstring format(WCStringRef format_str, ArgList args) { + WMemoryWriter w; + w.write(format_str, args); + return w.str(); +} + +/** +\rst +Prints formatted data to the file *f*. + +**Example**:: + +print(stderr, "Don't {}!", "panic"); +\endrst +*/ +FMT_API void print(std::FILE *f, CStringRef format_str, ArgList args); + +/** +\rst +Prints formatted data to ``stdout``. + +**Example**:: + +print("Elapsed time: {0:.2f} seconds", 1.23); +\endrst +*/ +FMT_API void print(CStringRef format_str, ArgList args); + +/** +Fast integer formatter. +*/ +class FormatInt { +private: + // Buffer should be large enough to hold all digits (digits10 + 1), + // a sign and a null character. + enum { BUFFER_SIZE = std::numeric_limits::digits10 + 3 }; + mutable char buffer_[BUFFER_SIZE]; + char *str_; + + // Formats value in reverse and returns the number of digits. + char *format_decimal(ULongLong value) { + char *buffer_end = buffer_ + BUFFER_SIZE - 1; + while (value >= 100) { + // Integer division is slow so do it for a group of two digits instead + // of for every digit. The idea comes from the talk by Alexandrescu + // "Three Optimization Tips for C++". See speed-test for a comparison. + unsigned index = static_cast((value % 100) * 2); + value /= 100; + *--buffer_end = internal::Data::DIGITS[index + 1]; + *--buffer_end = internal::Data::DIGITS[index]; + } + if (value < 10) { + *--buffer_end = static_cast('0' + value); + return buffer_end; + } + unsigned index = static_cast(value * 2); + *--buffer_end = internal::Data::DIGITS[index + 1]; + *--buffer_end = internal::Data::DIGITS[index]; + return buffer_end; + } + + void FormatSigned(LongLong value) { + ULongLong abs_value = static_cast(value); + bool negative = value < 0; + if (negative) + abs_value = 0 - abs_value; + str_ = format_decimal(abs_value); + if (negative) + *--str_ = '-'; + } + +public: + explicit FormatInt(int value) { + FormatSigned(value); + } + explicit FormatInt(long value) { + FormatSigned(value); + } + explicit FormatInt(LongLong value) { + FormatSigned(value); + } + explicit FormatInt(unsigned value) : str_(format_decimal(value)) {} + explicit FormatInt(unsigned long value) : str_(format_decimal(value)) {} + explicit FormatInt(ULongLong value) : str_(format_decimal(value)) {} + + /** Returns the number of characters written to the output buffer. */ + std::size_t size() const { + return internal::to_unsigned(buffer_ - str_ + BUFFER_SIZE - 1); + } + + /** + Returns a pointer to the output buffer content. No terminating null + character is appended. + */ + const char *data() const { + return str_; + } + + /** + Returns a pointer to the output buffer content with terminating null + character appended. + */ + const char *c_str() const { + buffer_[BUFFER_SIZE - 1] = '\0'; + return str_; + } + + /** + \rst + Returns the content of the output buffer as an ``std::string``. + \endrst + */ + std::string str() const { + return std::string(str_, size()); + } +}; + +// Formats a decimal integer value writing into buffer and returns +// a pointer to the end of the formatted string. This function doesn't +// write a terminating null character. +template +inline void format_decimal(char *&buffer, T value) { + typedef typename internal::IntTraits::MainType MainType; + MainType abs_value = static_cast(value); + if (internal::is_negative(value)) { + *buffer++ = '-'; + abs_value = 0 - abs_value; + } + if (abs_value < 100) { + if (abs_value < 10) { + *buffer++ = static_cast('0' + abs_value); + return; + } + unsigned index = static_cast(abs_value * 2); + *buffer++ = internal::Data::DIGITS[index]; + *buffer++ = internal::Data::DIGITS[index + 1]; + return; + } + unsigned num_digits = internal::count_digits(abs_value); + internal::format_decimal(buffer, abs_value, num_digits); + buffer += num_digits; +} + +/** +\rst +Returns a named argument for formatting functions. + +**Example**:: + +print("Elapsed time: {s:.2f} seconds", arg("s", 1.23)); + +\endrst +*/ +template +inline internal::NamedArgWithType arg(StringRef name, const T &arg) { + return internal::NamedArgWithType(name, arg); +} + +template +inline internal::NamedArgWithType arg(WStringRef name, const T &arg) { + return internal::NamedArgWithType(name, arg); +} + +// The following two functions are deleted intentionally to disable +// nested named arguments as in ``format("{}", arg("a", arg("b", 42)))``. +template +void arg(StringRef, const internal::NamedArg&) FMT_DELETED_OR_UNDEFINED; +template +void arg(WStringRef, const internal::NamedArg&) FMT_DELETED_OR_UNDEFINED; +} + +#if FMT_GCC_VERSION +// Use the system_header pragma to suppress warnings about variadic macros +// because suppressing -Wvariadic-macros with the diagnostic pragma doesn't +// work. It is used at the end because we want to suppress as little warnings +// as possible. +# pragma GCC system_header +#endif + +// This is used to work around VC++ bugs in handling variadic macros. +#define FMT_EXPAND(args) args + +// Returns the number of arguments. +// Based on https://groups.google.com/forum/#!topic/comp.std.c/d-6Mj5Lko_s. +#define FMT_NARG(...) FMT_NARG_(__VA_ARGS__, FMT_RSEQ_N()) +#define FMT_NARG_(...) FMT_EXPAND(FMT_ARG_N(__VA_ARGS__)) +#define FMT_ARG_N(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, N, ...) N +#define FMT_RSEQ_N() 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 + +#define FMT_FOR_EACH_(N, f, ...) \ + FMT_EXPAND(FMT_CONCAT(FMT_FOR_EACH, N)(f, __VA_ARGS__)) +#define FMT_FOR_EACH(f, ...) \ + FMT_EXPAND(FMT_FOR_EACH_(FMT_NARG(__VA_ARGS__), f, __VA_ARGS__)) + +#define FMT_ADD_ARG_NAME(type, index) type arg##index +#define FMT_GET_ARG_NAME(type, index) arg##index + +#if FMT_USE_VARIADIC_TEMPLATES +# define FMT_VARIADIC_(Char, ReturnType, func, call, ...) \ + template \ + ReturnType func(FMT_FOR_EACH(FMT_ADD_ARG_NAME, __VA_ARGS__), \ + const Args & ... args) { \ + typedef fmt::internal::ArgArray ArgArray; \ + typename ArgArray::Type array{ \ + ArgArray::template make >(args)...}; \ + call(FMT_FOR_EACH(FMT_GET_ARG_NAME, __VA_ARGS__), \ + fmt::ArgList(fmt::internal::make_type(args...), array)); \ + } +#else +// Defines a wrapper for a function taking __VA_ARGS__ arguments +// and n additional arguments of arbitrary types. +# define FMT_WRAP(Char, ReturnType, func, call, n, ...) \ + template \ + inline ReturnType func(FMT_FOR_EACH(FMT_ADD_ARG_NAME, __VA_ARGS__), \ + FMT_GEN(n, FMT_MAKE_ARG)) { \ + fmt::internal::ArgArray::Type arr; \ + FMT_GEN(n, FMT_ASSIGN_##Char); \ + call(FMT_FOR_EACH(FMT_GET_ARG_NAME, __VA_ARGS__), fmt::ArgList( \ + fmt::internal::make_type(FMT_GEN(n, FMT_MAKE_REF2)), arr)); \ + } + +# define FMT_VARIADIC_(Char, ReturnType, func, call, ...) \ + inline ReturnType func(FMT_FOR_EACH(FMT_ADD_ARG_NAME, __VA_ARGS__)) { \ + call(FMT_FOR_EACH(FMT_GET_ARG_NAME, __VA_ARGS__), fmt::ArgList()); \ + } \ + FMT_WRAP(Char, ReturnType, func, call, 1, __VA_ARGS__) \ + FMT_WRAP(Char, ReturnType, func, call, 2, __VA_ARGS__) \ + FMT_WRAP(Char, ReturnType, func, call, 3, __VA_ARGS__) \ + FMT_WRAP(Char, ReturnType, func, call, 4, __VA_ARGS__) \ + FMT_WRAP(Char, ReturnType, func, call, 5, __VA_ARGS__) \ + FMT_WRAP(Char, ReturnType, func, call, 6, __VA_ARGS__) \ + FMT_WRAP(Char, ReturnType, func, call, 7, __VA_ARGS__) \ + FMT_WRAP(Char, ReturnType, func, call, 8, __VA_ARGS__) \ + FMT_WRAP(Char, ReturnType, func, call, 9, __VA_ARGS__) \ + FMT_WRAP(Char, ReturnType, func, call, 10, __VA_ARGS__) \ + FMT_WRAP(Char, ReturnType, func, call, 11, __VA_ARGS__) \ + FMT_WRAP(Char, ReturnType, func, call, 12, __VA_ARGS__) \ + FMT_WRAP(Char, ReturnType, func, call, 13, __VA_ARGS__) \ + FMT_WRAP(Char, ReturnType, func, call, 14, __VA_ARGS__) \ + FMT_WRAP(Char, ReturnType, func, call, 15, __VA_ARGS__) +#endif // FMT_USE_VARIADIC_TEMPLATES + +/** +\rst +Defines a variadic function with the specified return type, function name +and argument types passed as variable arguments to this macro. + +**Example**:: + +void print_error(const char *file, int line, const char *format, +fmt::ArgList args) { +fmt::print("{}: {}: ", file, line); +fmt::print(format, args); +} +FMT_VARIADIC(void, print_error, const char *, int, const char *) + +``FMT_VARIADIC`` is used for compatibility with legacy C++ compilers that +don't implement variadic templates. You don't have to use this macro if +you don't need legacy compiler support and can use variadic templates +directly:: + +template +void print_error(const char *file, int line, const char *format, +const Args & ... args) { +fmt::print("{}: {}: ", file, line); +fmt::print(format, args...); +} +\endrst +*/ +#define FMT_VARIADIC(ReturnType, func, ...) \ + FMT_VARIADIC_(char, ReturnType, func, return func, __VA_ARGS__) + +#define FMT_VARIADIC_W(ReturnType, func, ...) \ + FMT_VARIADIC_(wchar_t, ReturnType, func, return func, __VA_ARGS__) + +#define FMT_CAPTURE_ARG_(id, index) ::fmt::arg(#id, id) + +#define FMT_CAPTURE_ARG_W_(id, index) ::fmt::arg(L###id, id) + +/** +\rst +Convenient macro to capture the arguments' names and values into several +``fmt::arg(name, value)``. + +**Example**:: + +int x = 1, y = 2; +print("point: ({x}, {y})", FMT_CAPTURE(x, y)); +// same as: +// print("point: ({x}, {y})", arg("x", x), arg("y", y)); + +\endrst +*/ +#define FMT_CAPTURE(...) FMT_FOR_EACH(FMT_CAPTURE_ARG_, __VA_ARGS__) + +#define FMT_CAPTURE_W(...) FMT_FOR_EACH(FMT_CAPTURE_ARG_W_, __VA_ARGS__) + +namespace fmt { +FMT_VARIADIC(std::string, format, CStringRef) +FMT_VARIADIC_W(std::wstring, format, WCStringRef) +FMT_VARIADIC(void, print, CStringRef) +FMT_VARIADIC(void, print, std::FILE *, CStringRef) +FMT_VARIADIC(void, print_colored, Color, CStringRef) + +namespace internal { +template +inline bool is_name_start(Char c) { + return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c; +} + +// Parses an unsigned integer advancing s to the end of the parsed input. +// This function assumes that the first character of s is a digit. +template +unsigned parse_nonnegative_int(const Char *&s) { + assert('0' <= *s && *s <= '9'); + unsigned value = 0; + do { + unsigned new_value = value * 10 + (*s++ - '0'); + // Check if value wrapped around. + if (new_value < value) { + value = (std::numeric_limits::max)(); + break; + } + value = new_value; + } while ('0' <= *s && *s <= '9'); + // Convert to unsigned to prevent a warning. + unsigned max_int = (std::numeric_limits::max)(); + if (value > max_int) + FMT_THROW(FormatError("number is too big")); + return value; +} + +inline void require_numeric_argument(const Arg &arg, char spec) { + if (arg.type > Arg::LAST_NUMERIC_TYPE) { + std::string message = + fmt::format("format specifier '{}' requires numeric argument", spec); + FMT_THROW(fmt::FormatError(message)); + } +} + +template +void check_sign(const Char *&s, const Arg &arg) { + char sign = static_cast(*s); + require_numeric_argument(arg, sign); + if (arg.type == Arg::UINT || arg.type == Arg::ULONG_LONG) { + FMT_THROW(FormatError(fmt::format( + "format specifier '{}' requires signed argument", sign))); + } + ++s; +} +} // namespace internal + +template +inline internal::Arg BasicFormatter::get_arg( + BasicStringRef arg_name, const char *&error) { + if (check_no_auto_index(error)) { + map_.init(args()); + const internal::Arg *arg = map_.find(arg_name); + if (arg) + return *arg; + error = "argument not found"; + } + return internal::Arg(); +} + +template +inline internal::Arg BasicFormatter::parse_arg_index(const Char *&s) { + const char *error = 0; + internal::Arg arg = *s < '0' || *s > '9' ? + next_arg(error) : get_arg(internal::parse_nonnegative_int(s), error); + if (error) { + FMT_THROW(FormatError( + *s != '}' && *s != ':' ? "invalid format string" : error)); + } + return arg; +} + +template +inline internal::Arg BasicFormatter::parse_arg_name(const Char *&s) { + assert(internal::is_name_start(*s)); + const Char *start = s; + Char c; + do { + c = *++s; + } while (internal::is_name_start(c) || ('0' <= c && c <= '9')); + const char *error = 0; + internal::Arg arg = get_arg(BasicStringRef(start, s - start), error); + if (error) + FMT_THROW(FormatError(error)); + return arg; +} + +template +const Char *BasicFormatter::format( + const Char *&format_str, const internal::Arg &arg) { + using internal::Arg; + const Char *s = format_str; + FormatSpec spec; + if (*s == ':') { + if (arg.type == Arg::CUSTOM) { + arg.custom.format(this, arg.custom.value, &s); + return s; + } + ++s; + // Parse fill and alignment. + if (Char c = *s) { + const Char *p = s + 1; + spec.align_ = ALIGN_DEFAULT; + do { + switch (*p) { + case '<': + spec.align_ = ALIGN_LEFT; + break; + case '>': + spec.align_ = ALIGN_RIGHT; + break; + case '=': + spec.align_ = ALIGN_NUMERIC; + break; + case '^': + spec.align_ = ALIGN_CENTER; + break; + } + if (spec.align_ != ALIGN_DEFAULT) { + if (p != s) { + if (c == '}') break; + if (c == '{') + FMT_THROW(FormatError("invalid fill character '{'")); + s += 2; + spec.fill_ = c; + } + else ++s; + if (spec.align_ == ALIGN_NUMERIC) + require_numeric_argument(arg, '='); + break; + } + } while (--p >= s); + } + + // Parse sign. + switch (*s) { + case '+': + check_sign(s, arg); + spec.flags_ |= SIGN_FLAG | PLUS_FLAG; + break; + case '-': + check_sign(s, arg); + spec.flags_ |= MINUS_FLAG; + break; + case ' ': + check_sign(s, arg); + spec.flags_ |= SIGN_FLAG; + break; + } + + if (*s == '#') { + require_numeric_argument(arg, '#'); + spec.flags_ |= HASH_FLAG; + ++s; + } + + // Parse zero flag. + if (*s == '0') { + require_numeric_argument(arg, '0'); + spec.align_ = ALIGN_NUMERIC; + spec.fill_ = '0'; + ++s; + } + + // Parse width. + if ('0' <= *s && *s <= '9') { + spec.width_ = internal::parse_nonnegative_int(s); + } + else if (*s == '{') { + ++s; + Arg width_arg = internal::is_name_start(*s) ? + parse_arg_name(s) : parse_arg_index(s); + if (*s++ != '}') + FMT_THROW(FormatError("invalid format string")); + ULongLong value = 0; + switch (width_arg.type) { + case Arg::INT: + if (width_arg.int_value < 0) + FMT_THROW(FormatError("negative width")); + value = width_arg.int_value; + break; + case Arg::UINT: + value = width_arg.uint_value; + break; + case Arg::LONG_LONG: + if (width_arg.long_long_value < 0) + FMT_THROW(FormatError("negative width")); + value = width_arg.long_long_value; + break; + case Arg::ULONG_LONG: + value = width_arg.ulong_long_value; + break; + default: + FMT_THROW(FormatError("width is not integer")); + } + if (value >(std::numeric_limits::max)()) + FMT_THROW(FormatError("number is too big")); + spec.width_ = static_cast(value); + } + + // Parse precision. + if (*s == '.') { + ++s; + spec.precision_ = 0; + if ('0' <= *s && *s <= '9') { + spec.precision_ = internal::parse_nonnegative_int(s); + } + else if (*s == '{') { + ++s; + Arg precision_arg = internal::is_name_start(*s) ? + parse_arg_name(s) : parse_arg_index(s); + if (*s++ != '}') + FMT_THROW(FormatError("invalid format string")); + ULongLong value = 0; + switch (precision_arg.type) { + case Arg::INT: + if (precision_arg.int_value < 0) + FMT_THROW(FormatError("negative precision")); + value = precision_arg.int_value; + break; + case Arg::UINT: + value = precision_arg.uint_value; + break; + case Arg::LONG_LONG: + if (precision_arg.long_long_value < 0) + FMT_THROW(FormatError("negative precision")); + value = precision_arg.long_long_value; + break; + case Arg::ULONG_LONG: + value = precision_arg.ulong_long_value; + break; + default: + FMT_THROW(FormatError("precision is not integer")); + } + if (value >(std::numeric_limits::max)()) + FMT_THROW(FormatError("number is too big")); + spec.precision_ = static_cast(value); + } + else { + FMT_THROW(FormatError("missing precision specifier")); + } + if (arg.type <= Arg::LAST_INTEGER_TYPE || arg.type == Arg::POINTER) { + FMT_THROW(FormatError( + fmt::format("precision not allowed in {} format specifier", + arg.type == Arg::POINTER ? "pointer" : "integer"))); + } + } + + // Parse type. + if (*s != '}' && *s) + spec.type_ = static_cast(*s++); + } + + if (*s++ != '}') + FMT_THROW(FormatError("missing '}' in format string")); + + // Format argument. + ArgFormatter(*this, spec, s - 1).visit(arg); + return s; +} + +template +void BasicFormatter::format(BasicCStringRef format_str) { + const Char *s = format_str.c_str(); + const Char *start = s; + while (*s) { + Char c = *s++; + if (c != '{' && c != '}') continue; + if (*s == c) { + write(writer_, start, s); + start = ++s; + continue; + } + if (c == '}') + FMT_THROW(FormatError("unmatched '}' in format string")); + write(writer_, start, s - 1); + internal::Arg arg = internal::is_name_start(*s) ? + parse_arg_name(s) : parse_arg_index(s); + start = s = format(s, arg); + } + write(writer_, start, s); +} +} // namespace fmt + +#if FMT_USE_USER_DEFINED_LITERALS +namespace fmt { +namespace internal { + +template +struct UdlFormat { + const Char *str; + + template + auto operator()(Args && ... args) const + -> decltype(format(str, std::forward(args)...)) { + return format(str, std::forward(args)...); + } +}; + +template +struct UdlArg { + const Char *str; + + template + NamedArgWithType operator=(T &&value) const { + return{ str, std::forward(value) }; + } +}; + +} // namespace internal + +inline namespace literals { + +/** +\rst +C++11 literal equivalent of :func:`fmt::format`. + +**Example**:: + +using namespace fmt::literals; +std::string message = "The answer is {}"_format(42); +\endrst +*/ +inline internal::UdlFormat +operator"" _format(const char *s, std::size_t) { + return{ s }; +} +inline internal::UdlFormat +operator"" _format(const wchar_t *s, std::size_t) { + return{ s }; +} + +/** +\rst +C++11 literal equivalent of :func:`fmt::arg`. + +**Example**:: + +using namespace fmt::literals; +print("Elapsed time: {s:.2f} seconds", "s"_a=1.23); +\endrst +*/ +inline internal::UdlArg +operator"" _a(const char *s, std::size_t) { + return{ s }; +} +inline internal::UdlArg +operator"" _a(const wchar_t *s, std::size_t) { + return{ s }; +} + +} // inline namespace literals +} // namespace fmt +#endif // FMT_USE_USER_DEFINED_LITERALS + +// Restore warnings. +#if FMT_GCC_VERSION >= 406 +# pragma GCC diagnostic pop +#endif + +#if defined(__clang__) && !defined(FMT_ICC_VERSION) +# pragma clang diagnostic pop +#endif + +#ifdef FMT_HEADER_ONLY +# define FMT_FUNC inline +# include "format.cc" +#else +# define FMT_FUNC +#endif + +#endif // FMT_FORMAT_H_ \ No newline at end of file diff --git a/include/spdlog/fmt/bundled/ostream.cc b/include/spdlog/fmt/bundled/ostream.cc index 4d4a9a4d..5aff5f5d 100644 --- a/include/spdlog/fmt/bundled/ostream.cc +++ b/include/spdlog/fmt/bundled/ostream.cc @@ -1,36 +1,35 @@ -/* - Formatting library for C++ - std::ostream support - - Copyright (c) 2012 - 2016, Victor Zverovich - All rights reserved. - - For the license information refer to format.h. - */ - -// Commented out by spdlog to use header only -// #include "fmt/ostream.h" - -namespace fmt { - -namespace internal { -FMT_FUNC void write(std::ostream &os, Writer &w) { - const char *data = w.data(); - typedef internal::MakeUnsigned::Type UnsignedStreamSize; - UnsignedStreamSize size = w.size(); - UnsignedStreamSize max_size = - internal::to_unsigned((std::numeric_limits::max)()); - do { - UnsignedStreamSize n = size <= max_size ? size : max_size; - os.write(data, static_cast(n)); - data += n; - size -= n; - } while (size != 0); -} -} - -FMT_FUNC void print(std::ostream &os, CStringRef format_str, ArgList args) { - MemoryWriter w; - w.write(format_str, args); - internal::write(os, w); -} -} // namespace fmt +/* +Formatting library for C++ - std::ostream support + +Copyright (c) 2012 - 2016, Victor Zverovich +All rights reserved. + +For the license information refer to format.h. +*/ + +#include "ostream.h" + +namespace fmt { + +namespace internal { +FMT_FUNC void write(std::ostream &os, Writer &w) { + const char *data = w.data(); + typedef internal::MakeUnsigned::Type UnsignedStreamSize; + UnsignedStreamSize size = w.size(); + UnsignedStreamSize max_size = + internal::to_unsigned((std::numeric_limits::max)()); + do { + UnsignedStreamSize n = size <= max_size ? size : max_size; + os.write(data, static_cast(n)); + data += n; + size -= n; + } while (size != 0); +} +} + +FMT_FUNC void print(std::ostream &os, CStringRef format_str, ArgList args) { + MemoryWriter w; + w.write(format_str, args); + internal::write(os, w); +} +} // namespace fmt \ No newline at end of file diff --git a/include/spdlog/fmt/bundled/ostream.h b/include/spdlog/fmt/bundled/ostream.h index 37e08f3b..ce2e13ce 100644 --- a/include/spdlog/fmt/bundled/ostream.h +++ b/include/spdlog/fmt/bundled/ostream.h @@ -1,118 +1,107 @@ -/* - Formatting library for C++ - std::ostream support - - Copyright (c) 2012 - 2016, Victor Zverovich - All rights reserved. - - For the license information refer to format.h. - */ - -#ifndef FMT_OSTREAM_H_ -#define FMT_OSTREAM_H_ - -// Commented out by spdlog to use header only -// #include "fmt/format.h" -#include - -namespace fmt -{ - -namespace internal -{ - -template -class FormatBuf : public std::basic_streambuf -{ -private: - typedef typename std::basic_streambuf::int_type int_type; - typedef typename std::basic_streambuf::traits_type traits_type; - - Buffer &buffer_; - Char *start_; - -public: - FormatBuf(Buffer &buffer) : buffer_(buffer), start_(&buffer[0]) - { - this->setp(start_, start_ + buffer_.capacity()); - } - - int_type overflow(int_type ch = traits_type::eof()) - { - if (!traits_type::eq_int_type(ch, traits_type::eof())) - { - size_t buf_size = size(); - buffer_.resize(buf_size); - buffer_.reserve(buf_size * 2); - - start_ = &buffer_[0]; - start_[buf_size] = traits_type::to_char_type(ch); - this->setp(start_+ buf_size + 1, start_ + buf_size * 2); - } - return ch; - } - - size_t size() const - { - return to_unsigned(this->pptr() - start_); - } -}; - -Yes &convert(std::ostream &); - -struct DummyStream : std::ostream -{ - DummyStream(); // Suppress a bogus warning in MSVC. - // Hide all operator<< overloads from std::ostream. - void operator<<(Null<>); -}; - -No &operator<<(std::ostream &, int); - -template -struct ConvertToIntImpl -{ - // Convert to int only if T doesn't have an overloaded operator<<. - enum - { - value = sizeof(convert(get() << get())) == sizeof(No) - }; -}; - -// Write the content of w to os. -void write(std::ostream &os, Writer &w); -} // namespace internal - -// Formats a value. -template -void format_arg(BasicFormatter &f, - const Char *&format_str, const T &value) -{ - internal::MemoryBuffer buffer; - - internal::FormatBuf format_buf(buffer); - std::basic_ostream output(&format_buf); - output << value; - - BasicStringRef str(&buffer[0], format_buf.size()); - typedef internal::MakeArg< BasicFormatter > MakeArg; - format_str = f.format(format_str, MakeArg(str)); -} - -/** - \rst - Prints formatted data to the stream *os*. - - **Example**:: - - print(cerr, "Don't {}!", "panic"); - \endrst - */ -FMT_API void print(std::ostream &os, CStringRef format_str, ArgList args); -FMT_VARIADIC(void, print, std::ostream &, CStringRef) -} // namespace fmt - -#ifdef FMT_HEADER_ONLY -# include "ostream.cc" -#endif - -#endif // FMT_OSTREAM_H_ +/* +Formatting library for C++ - std::ostream support + +Copyright (c) 2012 - 2016, Victor Zverovich +All rights reserved. + +For the license information refer to format.h. +*/ + +#ifndef FMT_OSTREAM_H_ +#define FMT_OSTREAM_H_ + +// commented out by spdlog +//#include "format.h" +#include + +namespace fmt { + +namespace internal { + +template +class FormatBuf : public std::basic_streambuf { +private: + typedef typename std::basic_streambuf::int_type int_type; + typedef typename std::basic_streambuf::traits_type traits_type; + + Buffer &buffer_; + Char *start_; + +public: + FormatBuf(Buffer &buffer) : buffer_(buffer), start_(&buffer[0]) { + this->setp(start_, start_ + buffer_.capacity()); + } + + int_type overflow(int_type ch = traits_type::eof()) { + if (!traits_type::eq_int_type(ch, traits_type::eof())) { + size_t buf_size = size(); + buffer_.resize(buf_size); + buffer_.reserve(buf_size * 2); + + start_ = &buffer_[0]; + start_[buf_size] = traits_type::to_char_type(ch); + this->setp(start_ + buf_size + 1, start_ + buf_size * 2); + } + return ch; + } + + size_t size() const { + return to_unsigned(this->pptr() - start_); + } +}; + +Yes &convert(std::ostream &); + +struct DummyStream : std::ostream { + DummyStream(); // Suppress a bogus warning in MSVC. + // Hide all operator<< overloads from std::ostream. + void operator<<(Null<>); +}; + +No &operator<<(std::ostream &, int); + +template +struct ConvertToIntImpl { + // Convert to int only if T doesn't have an overloaded operator<<. + enum { + value = sizeof(convert(get() << get())) == sizeof(No) + }; +}; + +// Write the content of w to os. +void write(std::ostream &os, Writer &w); +} // namespace internal + +// Formats a value. +template +void format_arg(BasicFormatter &f, + const Char *&format_str, const T &value) { + internal::MemoryBuffer buffer; + + internal::FormatBuf format_buf(buffer); + std::basic_ostream output(&format_buf); + output << value; + + BasicStringRef str(&buffer[0], format_buf.size()); + typedef internal::MakeArg< BasicFormatter > MakeArg; + format_str = f.format(format_str, MakeArg(str)); +} + +/** +\rst +Prints formatted data to the stream *os*. + +**Example**:: + +print(cerr, "Don't {}!", "panic"); +\endrst +*/ +FMT_API void print(std::ostream &os, CStringRef format_str, ArgList args); +FMT_VARIADIC(void, print, std::ostream &, CStringRef) +} // namespace fmt + +#ifdef FMT_HEADER_ONLY +# include "ostream.cc" +#endif + +#endif // FMT_OSTREAM_H_ \ No newline at end of file diff --git a/include/spdlog/fmt/bundled/printf.h b/include/spdlog/fmt/bundled/printf.h index 77e68403..5f39be1d 100644 --- a/include/spdlog/fmt/bundled/printf.h +++ b/include/spdlog/fmt/bundled/printf.h @@ -1,642 +1,573 @@ -/* - Formatting library for C++ - - Copyright (c) 2012 - 2016, Victor Zverovich - All rights reserved. - - For the license information refer to format.h. - */ - -#ifndef FMT_PRINTF_H_ -#define FMT_PRINTF_H_ - -#include // std::fill_n -#include // std::numeric_limits - -#include "fmt/ostream.h" - -namespace fmt -{ -namespace internal -{ - -// Checks if a value fits in int - used to avoid warnings about comparing -// signed and unsigned integers. -template -struct IntChecker -{ - template - static bool fits_in_int(T value) - { - unsigned max = std::numeric_limits::max(); - return value <= max; - } - static bool fits_in_int(bool) - { - return true; - } -}; - -template <> -struct IntChecker -{ - template - static bool fits_in_int(T value) - { - return value >= std::numeric_limits::min() && - value <= std::numeric_limits::max(); - } - static bool fits_in_int(int) - { - return true; - } -}; - -class PrecisionHandler : public ArgVisitor -{ -public: - void report_unhandled_arg() - { - FMT_THROW(FormatError("precision is not integer")); - } - - template - int visit_any_int(T value) - { - if (!IntChecker::is_signed>::fits_in_int(value)) - FMT_THROW(FormatError("number is too big")); - return static_cast(value); - } -}; - -// IsZeroInt::visit(arg) returns true iff arg is a zero integer. -class IsZeroInt : public ArgVisitor -{ -public: - template - bool visit_any_int(T value) - { - return value == 0; - } -}; - -template -struct is_same -{ - enum { value = 0 }; -}; - -template -struct is_same -{ - enum { value = 1 }; -}; - -// An argument visitor that converts an integer argument to T for printf, -// if T is an integral type. If T is void, the argument is converted to -// corresponding signed or unsigned type depending on the type specifier: -// 'd' and 'i' - signed, other - unsigned) -template -class ArgConverter : public ArgVisitor, void> -{ -private: - internal::Arg &arg_; - wchar_t type_; - - FMT_DISALLOW_COPY_AND_ASSIGN(ArgConverter); - -public: - ArgConverter(internal::Arg &arg, wchar_t type) - : arg_(arg), type_(type) {} - - void visit_bool(bool value) - { - if (type_ != 's') - visit_any_int(value); - } - - template - void visit_any_int(U value) - { - bool is_signed = type_ == 'd' || type_ == 'i'; - using internal::Arg; - typedef typename internal::Conditional< - is_same::value, U, T>::type TargetType; - if (sizeof(TargetType) <= sizeof(int)) - { - // Extra casts are used to silence warnings. - if (is_signed) - { - arg_.type = Arg::INT; - arg_.int_value = static_cast(static_cast(value)); - } - else - { - arg_.type = Arg::UINT; - typedef typename internal::MakeUnsigned::Type Unsigned; - arg_.uint_value = static_cast(static_cast(value)); - } - } - else - { - if (is_signed) - { - arg_.type = Arg::LONG_LONG; - // glibc's printf doesn't sign extend arguments of smaller types: - // std::printf("%lld", -42); // prints "4294967254" - // but we don't have to do the same because it's a UB. - arg_.long_long_value = static_cast(value); - } - else - { - arg_.type = Arg::ULONG_LONG; - arg_.ulong_long_value = - static_cast::Type>(value); - } - } - } -}; - -// Converts an integer argument to char for printf. -class CharConverter : public ArgVisitor -{ -private: - internal::Arg &arg_; - - FMT_DISALLOW_COPY_AND_ASSIGN(CharConverter); - -public: - explicit CharConverter(internal::Arg &arg) : arg_(arg) {} - - template - void visit_any_int(T value) - { - arg_.type = internal::Arg::CHAR; - arg_.int_value = static_cast(value); - } -}; - -// Checks if an argument is a valid printf width specifier and sets -// left alignment if it is negative. -class WidthHandler : public ArgVisitor -{ -private: - FormatSpec &spec_; - - FMT_DISALLOW_COPY_AND_ASSIGN(WidthHandler); - -public: - explicit WidthHandler(FormatSpec &spec) : spec_(spec) {} - - void report_unhandled_arg() - { - FMT_THROW(FormatError("width is not integer")); - } - - template - unsigned visit_any_int(T value) - { - typedef typename internal::IntTraits::MainType UnsignedType; - UnsignedType width = static_cast(value); - if (internal::is_negative(value)) - { - spec_.align_ = ALIGN_LEFT; - width = 0 - width; - } - unsigned int_max = std::numeric_limits::max(); - if (width > int_max) - FMT_THROW(FormatError("number is too big")); - return static_cast(width); - } -}; -} // namespace internal - -/** - \rst - A ``printf`` argument formatter based on the `curiously recurring template - pattern `_. - - To use `~fmt::BasicPrintfArgFormatter` define a subclass that implements some - or all of the visit methods with the same signatures as the methods in - `~fmt::ArgVisitor`, for example, `~fmt::ArgVisitor::visit_int()`. - Pass the subclass as the *Impl* template parameter. When a formatting - function processes an argument, it will dispatch to a visit method - specific to the argument type. For example, if the argument type is - ``double`` then the `~fmt::ArgVisitor::visit_double()` method of a subclass - will be called. If the subclass doesn't contain a method with this signature, - then a corresponding method of `~fmt::BasicPrintfArgFormatter` or its - superclass will be called. - \endrst - */ -template -class BasicPrintfArgFormatter : public internal::ArgFormatterBase -{ -private: - void write_null_pointer() - { - this->spec().type_ = 0; - this->write("(nil)"); - } - - typedef internal::ArgFormatterBase Base; - -public: - /** - \rst - Constructs an argument formatter object. - *writer* is a reference to the output writer and *spec* contains format - specifier information for standard argument types. - \endrst - */ - BasicPrintfArgFormatter(BasicWriter &writer, FormatSpec &spec) - : internal::ArgFormatterBase(writer, spec) {} - - /** Formats an argument of type ``bool``. */ - void visit_bool(bool value) - { - FormatSpec &fmt_spec = this->spec(); - if (fmt_spec.type_ != 's') - return this->visit_any_int(value); - fmt_spec.type_ = 0; - this->write(value); - } - - /** Formats a character. */ - void visit_char(int value) - { - const FormatSpec &fmt_spec = this->spec(); - BasicWriter &w = this->writer(); - if (fmt_spec.type_ && fmt_spec.type_ != 'c') - w.write_int(value, fmt_spec); - typedef typename BasicWriter::CharPtr CharPtr; - CharPtr out = CharPtr(); - if (fmt_spec.width_ > 1) - { - Char fill = ' '; - out = w.grow_buffer(fmt_spec.width_); - if (fmt_spec.align_ != ALIGN_LEFT) - { - std::fill_n(out, fmt_spec.width_ - 1, fill); - out += fmt_spec.width_ - 1; - } - else - { - std::fill_n(out + 1, fmt_spec.width_ - 1, fill); - } - } - else - { - out = w.grow_buffer(1); - } - *out = static_cast(value); - } - - /** Formats a null-terminated C string. */ - void visit_cstring(const char *value) - { - if (value) - Base::visit_cstring(value); - else if (this->spec().type_ == 'p') - write_null_pointer(); - else - this->write("(null)"); - } - - /** Formats a pointer. */ - void visit_pointer(const void *value) - { - if (value) - return Base::visit_pointer(value); - this->spec().type_ = 0; - write_null_pointer(); - } - - /** Formats an argument of a custom (user-defined) type. */ - void visit_custom(internal::Arg::CustomValue c) - { - BasicFormatter formatter(ArgList(), this->writer()); - const Char format_str[] = {'}', 0}; - const Char *format = format_str; - c.format(&formatter, c.value, &format); - } -}; - -/** The default printf argument formatter. */ -template -class PrintfArgFormatter - : public BasicPrintfArgFormatter, Char> -{ -public: - /** Constructs an argument formatter object. */ - PrintfArgFormatter(BasicWriter &w, FormatSpec &s) - : BasicPrintfArgFormatter, Char>(w, s) {} -}; - -/** This template formats data and writes the output to a writer. */ -template > -class PrintfFormatter : private internal::FormatterBase -{ -private: - BasicWriter &writer_; - - void parse_flags(FormatSpec &spec, const Char *&s); - - // Returns the argument with specified index or, if arg_index is equal - // to the maximum unsigned value, the next argument. - internal::Arg get_arg( - const Char *s, - unsigned arg_index = (std::numeric_limits::max)()); - - // Parses argument index, flags and width and returns the argument index. - unsigned parse_header(const Char *&s, FormatSpec &spec); - -public: - /** - \rst - Constructs a ``PrintfFormatter`` object. References to the arguments and - the writer are stored in the formatter object so make sure they have - appropriate lifetimes. - \endrst - */ - explicit PrintfFormatter(const ArgList &args, BasicWriter &w) - : FormatterBase(args), writer_(w) {} - - /** Formats stored arguments and writes the output to the writer. */ - FMT_API void format(BasicCStringRef format_str); -}; - -template -void PrintfFormatter::parse_flags(FormatSpec &spec, const Char *&s) -{ - for (;;) - { - switch (*s++) - { - case '-': - spec.align_ = ALIGN_LEFT; - break; - case '+': - spec.flags_ |= SIGN_FLAG | PLUS_FLAG; - break; - case '0': - spec.fill_ = '0'; - break; - case ' ': - spec.flags_ |= SIGN_FLAG; - break; - case '#': - spec.flags_ |= HASH_FLAG; - break; - default: - --s; - return; - } - } -} - -template -internal::Arg PrintfFormatter::get_arg(const Char *s, - unsigned arg_index) -{ - (void)s; - const char *error = 0; - internal::Arg arg = arg_index == std::numeric_limits::max() ? - next_arg(error) : FormatterBase::get_arg(arg_index - 1, error); - if (error) - FMT_THROW(FormatError(!*s ? "invalid format string" : error)); - return arg; -} - -template -unsigned PrintfFormatter::parse_header( - const Char *&s, FormatSpec &spec) -{ - unsigned arg_index = std::numeric_limits::max(); - Char c = *s; - if (c >= '0' && c <= '9') - { - // Parse an argument index (if followed by '$') or a width possibly - // preceded with '0' flag(s). - unsigned value = internal::parse_nonnegative_int(s); - if (*s == '$') // value is an argument index - { - ++s; - arg_index = value; - } - else - { - if (c == '0') - spec.fill_ = '0'; - if (value != 0) - { - // Nonzero value means that we parsed width and don't need to - // parse it or flags again, so return now. - spec.width_ = value; - return arg_index; - } - } - } - parse_flags(spec, s); - // Parse width. - if (*s >= '0' && *s <= '9') - { - spec.width_ = internal::parse_nonnegative_int(s); - } - else if (*s == '*') - { - ++s; - spec.width_ = internal::WidthHandler(spec).visit(get_arg(s)); - } - return arg_index; -} - -template -void PrintfFormatter::format(BasicCStringRef format_str) -{ - const Char *start = format_str.c_str(); - const Char *s = start; - while (*s) - { - Char c = *s++; - if (c != '%') continue; - if (*s == c) - { - write(writer_, start, s); - start = ++s; - continue; - } - write(writer_, start, s - 1); - - FormatSpec spec; - spec.align_ = ALIGN_RIGHT; - - // Parse argument index, flags and width. - unsigned arg_index = parse_header(s, spec); - - // Parse precision. - if (*s == '.') - { - ++s; - if ('0' <= *s && *s <= '9') - { - spec.precision_ = static_cast(internal::parse_nonnegative_int(s)); - } - else if (*s == '*') - { - ++s; - spec.precision_ = internal::PrecisionHandler().visit(get_arg(s)); - } - } - - using internal::Arg; - Arg arg = get_arg(s, arg_index); - if (spec.flag(HASH_FLAG) && internal::IsZeroInt().visit(arg)) - spec.flags_ &= ~internal::to_unsigned(HASH_FLAG); - if (spec.fill_ == '0') - { - if (arg.type <= Arg::LAST_NUMERIC_TYPE) - spec.align_ = ALIGN_NUMERIC; - else - spec.fill_ = ' '; // Ignore '0' flag for non-numeric types. - } - - // Parse length and convert the argument to the required type. - using internal::ArgConverter; - switch (*s++) - { - case 'h': - if (*s == 'h') - ArgConverter(arg, *++s).visit(arg); - else - ArgConverter(arg, *s).visit(arg); - break; - case 'l': - if (*s == 'l') - ArgConverter(arg, *++s).visit(arg); - else - ArgConverter(arg, *s).visit(arg); - break; - case 'j': - ArgConverter(arg, *s).visit(arg); - break; - case 'z': - ArgConverter(arg, *s).visit(arg); - break; - case 't': - ArgConverter(arg, *s).visit(arg); - break; - case 'L': - // printf produces garbage when 'L' is omitted for long double, no - // need to do the same. - break; - default: - --s; - ArgConverter(arg, *s).visit(arg); - } - - // Parse type. - if (!*s) - FMT_THROW(FormatError("invalid format string")); - spec.type_ = static_cast(*s++); - if (arg.type <= Arg::LAST_INTEGER_TYPE) - { - // Normalize type. - switch (spec.type_) - { - case 'i': - case 'u': - spec.type_ = 'd'; - break; - case 'c': - // TODO: handle wchar_t - internal::CharConverter(arg).visit(arg); - break; - } - } - - start = s; - - // Format argument. - AF(writer_, spec).visit(arg); - } - write(writer_, start, s); -} - -template -void printf(BasicWriter &w, BasicCStringRef format, ArgList args) -{ - PrintfFormatter(args, w).format(format); -} - -/** - \rst - Formats arguments and returns the result as a string. - - **Example**:: - - std::string message = fmt::sprintf("The answer is %d", 42); - \endrst -*/ -inline std::string sprintf(CStringRef format, ArgList args) -{ - MemoryWriter w; - printf(w, format, args); - return w.str(); -} -FMT_VARIADIC(std::string, sprintf, CStringRef) - -inline std::wstring sprintf(WCStringRef format, ArgList args) -{ - WMemoryWriter w; - printf(w, format, args); - return w.str(); -} -FMT_VARIADIC_W(std::wstring, sprintf, WCStringRef) - -/** - \rst - Prints formatted data to the file *f*. - - **Example**:: - - fmt::fprintf(stderr, "Don't %s!", "panic"); - \endrst - */ -FMT_API int fprintf(std::FILE *f, CStringRef format, ArgList args); -FMT_VARIADIC(int, fprintf, std::FILE *, CStringRef) - -/** - \rst - Prints formatted data to ``stdout``. - - **Example**:: - - fmt::printf("Elapsed time: %.2f seconds", 1.23); - \endrst - */ -inline int printf(CStringRef format, ArgList args) -{ - return fprintf(stdout, format, args); -} -FMT_VARIADIC(int, printf, CStringRef) - -/** - \rst - Prints formatted data to the stream *os*. - - **Example**:: - - fprintf(cerr, "Don't %s!", "panic"); - \endrst - */ -inline int fprintf(std::ostream &os, CStringRef format_str, ArgList args) -{ - MemoryWriter w; - printf(w, format_str, args); - internal::write(os, w); - return static_cast(w.size()); -} -FMT_VARIADIC(int, fprintf, std::ostream &, CStringRef) -} // namespace fmt - -#endif // FMT_PRINTF_H_ +/* +Formatting library for C++ + +Copyright (c) 2012 - 2016, Victor Zverovich +All rights reserved. + +For the license information refer to format.h. +*/ + +#ifndef FMT_PRINTF_H_ +#define FMT_PRINTF_H_ + +#include // std::fill_n +#include // std::numeric_limits + +#include "ostream.h" + +namespace fmt { +namespace internal { + +// Checks if a value fits in int - used to avoid warnings about comparing +// signed and unsigned integers. +template +struct IntChecker { + template + static bool fits_in_int(T value) { + unsigned max = std::numeric_limits::max(); + return value <= max; + } + static bool fits_in_int(bool) { + return true; + } +}; + +template <> +struct IntChecker { + template + static bool fits_in_int(T value) { + return value >= std::numeric_limits::min() && + value <= std::numeric_limits::max(); + } + static bool fits_in_int(int) { + return true; + } +}; + +class PrecisionHandler : public ArgVisitor { +public: + void report_unhandled_arg() { + FMT_THROW(FormatError("precision is not integer")); + } + + template + int visit_any_int(T value) { + if (!IntChecker::is_signed>::fits_in_int(value)) + FMT_THROW(FormatError("number is too big")); + return static_cast(value); + } +}; + +// IsZeroInt::visit(arg) returns true iff arg is a zero integer. +class IsZeroInt : public ArgVisitor { +public: + template + bool visit_any_int(T value) { + return value == 0; + } +}; + +template +struct is_same { + enum { value = 0 }; +}; + +template +struct is_same { + enum { value = 1 }; +}; + +// An argument visitor that converts an integer argument to T for printf, +// if T is an integral type. If T is void, the argument is converted to +// corresponding signed or unsigned type depending on the type specifier: +// 'd' and 'i' - signed, other - unsigned) +template +class ArgConverter : public ArgVisitor, void> { +private: + internal::Arg &arg_; + wchar_t type_; + + FMT_DISALLOW_COPY_AND_ASSIGN(ArgConverter); + +public: + ArgConverter(internal::Arg &arg, wchar_t type) + : arg_(arg), type_(type) {} + + void visit_bool(bool value) { + if (type_ != 's') + visit_any_int(value); + } + + template + void visit_any_int(U value) { + bool is_signed = type_ == 'd' || type_ == 'i'; + using internal::Arg; + typedef typename internal::Conditional< + is_same::value, U, T>::type TargetType; + if (sizeof(TargetType) <= sizeof(int)) { + // Extra casts are used to silence warnings. + if (is_signed) { + arg_.type = Arg::INT; + arg_.int_value = static_cast(static_cast(value)); + } + else { + arg_.type = Arg::UINT; + typedef typename internal::MakeUnsigned::Type Unsigned; + arg_.uint_value = static_cast(static_cast(value)); + } + } + else { + if (is_signed) { + arg_.type = Arg::LONG_LONG; + // glibc's printf doesn't sign extend arguments of smaller types: + // std::printf("%lld", -42); // prints "4294967254" + // but we don't have to do the same because it's a UB. + arg_.long_long_value = static_cast(value); + } + else { + arg_.type = Arg::ULONG_LONG; + arg_.ulong_long_value = + static_cast::Type>(value); + } + } + } +}; + +// Converts an integer argument to char for printf. +class CharConverter : public ArgVisitor { +private: + internal::Arg &arg_; + + FMT_DISALLOW_COPY_AND_ASSIGN(CharConverter); + +public: + explicit CharConverter(internal::Arg &arg) : arg_(arg) {} + + template + void visit_any_int(T value) { + arg_.type = internal::Arg::CHAR; + arg_.int_value = static_cast(value); + } +}; + +// Checks if an argument is a valid printf width specifier and sets +// left alignment if it is negative. +class WidthHandler : public ArgVisitor { +private: + FormatSpec &spec_; + + FMT_DISALLOW_COPY_AND_ASSIGN(WidthHandler); + +public: + explicit WidthHandler(FormatSpec &spec) : spec_(spec) {} + + void report_unhandled_arg() { + FMT_THROW(FormatError("width is not integer")); + } + + template + unsigned visit_any_int(T value) { + typedef typename internal::IntTraits::MainType UnsignedType; + UnsignedType width = static_cast(value); + if (internal::is_negative(value)) { + spec_.align_ = ALIGN_LEFT; + width = 0 - width; + } + unsigned int_max = std::numeric_limits::max(); + if (width > int_max) + FMT_THROW(FormatError("number is too big")); + return static_cast(width); + } +}; +} // namespace internal + +/** +\rst +A ``printf`` argument formatter based on the `curiously recurring template +pattern `_. + +To use `~fmt::BasicPrintfArgFormatter` define a subclass that implements some +or all of the visit methods with the same signatures as the methods in +`~fmt::ArgVisitor`, for example, `~fmt::ArgVisitor::visit_int()`. +Pass the subclass as the *Impl* template parameter. When a formatting +function processes an argument, it will dispatch to a visit method +specific to the argument type. For example, if the argument type is +``double`` then the `~fmt::ArgVisitor::visit_double()` method of a subclass +will be called. If the subclass doesn't contain a method with this signature, +then a corresponding method of `~fmt::BasicPrintfArgFormatter` or its +superclass will be called. +\endrst +*/ +template +class BasicPrintfArgFormatter : public internal::ArgFormatterBase { +private: + void write_null_pointer() { + this->spec().type_ = 0; + this->write("(nil)"); + } + + typedef internal::ArgFormatterBase Base; + +public: + /** + \rst + Constructs an argument formatter object. + *writer* is a reference to the output writer and *spec* contains format + specifier information for standard argument types. + \endrst + */ + BasicPrintfArgFormatter(BasicWriter &writer, FormatSpec &spec) + : internal::ArgFormatterBase(writer, spec) {} + + /** Formats an argument of type ``bool``. */ + void visit_bool(bool value) { + FormatSpec &fmt_spec = this->spec(); + if (fmt_spec.type_ != 's') + return this->visit_any_int(value); + fmt_spec.type_ = 0; + this->write(value); + } + + /** Formats a character. */ + void visit_char(int value) { + const FormatSpec &fmt_spec = this->spec(); + BasicWriter &w = this->writer(); + if (fmt_spec.type_ && fmt_spec.type_ != 'c') + w.write_int(value, fmt_spec); + typedef typename BasicWriter::CharPtr CharPtr; + CharPtr out = CharPtr(); + if (fmt_spec.width_ > 1) { + Char fill = ' '; + out = w.grow_buffer(fmt_spec.width_); + if (fmt_spec.align_ != ALIGN_LEFT) { + std::fill_n(out, fmt_spec.width_ - 1, fill); + out += fmt_spec.width_ - 1; + } + else { + std::fill_n(out + 1, fmt_spec.width_ - 1, fill); + } + } + else { + out = w.grow_buffer(1); + } + *out = static_cast(value); + } + + /** Formats a null-terminated C string. */ + void visit_cstring(const char *value) { + if (value) + Base::visit_cstring(value); + else if (this->spec().type_ == 'p') + write_null_pointer(); + else + this->write("(null)"); + } + + /** Formats a pointer. */ + void visit_pointer(const void *value) { + if (value) + return Base::visit_pointer(value); + this->spec().type_ = 0; + write_null_pointer(); + } + + /** Formats an argument of a custom (user-defined) type. */ + void visit_custom(internal::Arg::CustomValue c) { + BasicFormatter formatter(ArgList(), this->writer()); + const Char format_str[] = { '}', 0 }; + const Char *format = format_str; + c.format(&formatter, c.value, &format); + } +}; + +/** The default printf argument formatter. */ +template +class PrintfArgFormatter + : public BasicPrintfArgFormatter, Char> { +public: + /** Constructs an argument formatter object. */ + PrintfArgFormatter(BasicWriter &w, FormatSpec &s) + : BasicPrintfArgFormatter, Char>(w, s) {} +}; + +/** This template formats data and writes the output to a writer. */ +template > +class PrintfFormatter : private internal::FormatterBase { +private: + BasicWriter &writer_; + + void parse_flags(FormatSpec &spec, const Char *&s); + + // Returns the argument with specified index or, if arg_index is equal + // to the maximum unsigned value, the next argument. + internal::Arg get_arg( + const Char *s, + unsigned arg_index = (std::numeric_limits::max)()); + + // Parses argument index, flags and width and returns the argument index. + unsigned parse_header(const Char *&s, FormatSpec &spec); + +public: + /** + \rst + Constructs a ``PrintfFormatter`` object. References to the arguments and + the writer are stored in the formatter object so make sure they have + appropriate lifetimes. + \endrst + */ + explicit PrintfFormatter(const ArgList &args, BasicWriter &w) + : FormatterBase(args), writer_(w) {} + + /** Formats stored arguments and writes the output to the writer. */ + FMT_API void format(BasicCStringRef format_str); +}; + +template +void PrintfFormatter::parse_flags(FormatSpec &spec, const Char *&s) { + for (;;) { + switch (*s++) { + case '-': + spec.align_ = ALIGN_LEFT; + break; + case '+': + spec.flags_ |= SIGN_FLAG | PLUS_FLAG; + break; + case '0': + spec.fill_ = '0'; + break; + case ' ': + spec.flags_ |= SIGN_FLAG; + break; + case '#': + spec.flags_ |= HASH_FLAG; + break; + default: + --s; + return; + } + } +} + +template +internal::Arg PrintfFormatter::get_arg(const Char *s, + unsigned arg_index) { + (void)s; + const char *error = 0; + internal::Arg arg = arg_index == std::numeric_limits::max() ? + next_arg(error) : FormatterBase::get_arg(arg_index - 1, error); + if (error) + FMT_THROW(FormatError(!*s ? "invalid format string" : error)); + return arg; +} + +template +unsigned PrintfFormatter::parse_header( + const Char *&s, FormatSpec &spec) { + unsigned arg_index = std::numeric_limits::max(); + Char c = *s; + if (c >= '0' && c <= '9') { + // Parse an argument index (if followed by '$') or a width possibly + // preceded with '0' flag(s). + unsigned value = internal::parse_nonnegative_int(s); + if (*s == '$') { // value is an argument index + ++s; + arg_index = value; + } + else { + if (c == '0') + spec.fill_ = '0'; + if (value != 0) { + // Nonzero value means that we parsed width and don't need to + // parse it or flags again, so return now. + spec.width_ = value; + return arg_index; + } + } + } + parse_flags(spec, s); + // Parse width. + if (*s >= '0' && *s <= '9') { + spec.width_ = internal::parse_nonnegative_int(s); + } + else if (*s == '*') { + ++s; + spec.width_ = internal::WidthHandler(spec).visit(get_arg(s)); + } + return arg_index; +} + +template +void PrintfFormatter::format(BasicCStringRef format_str) { + const Char *start = format_str.c_str(); + const Char *s = start; + while (*s) { + Char c = *s++; + if (c != '%') continue; + if (*s == c) { + write(writer_, start, s); + start = ++s; + continue; + } + write(writer_, start, s - 1); + + FormatSpec spec; + spec.align_ = ALIGN_RIGHT; + + // Parse argument index, flags and width. + unsigned arg_index = parse_header(s, spec); + + // Parse precision. + if (*s == '.') { + ++s; + if ('0' <= *s && *s <= '9') { + spec.precision_ = static_cast(internal::parse_nonnegative_int(s)); + } + else if (*s == '*') { + ++s; + spec.precision_ = internal::PrecisionHandler().visit(get_arg(s)); + } + } + + using internal::Arg; + Arg arg = get_arg(s, arg_index); + if (spec.flag(HASH_FLAG) && internal::IsZeroInt().visit(arg)) + spec.flags_ &= ~internal::to_unsigned(HASH_FLAG); + if (spec.fill_ == '0') { + if (arg.type <= Arg::LAST_NUMERIC_TYPE) + spec.align_ = ALIGN_NUMERIC; + else + spec.fill_ = ' '; // Ignore '0' flag for non-numeric types. + } + + // Parse length and convert the argument to the required type. + using internal::ArgConverter; + switch (*s++) { + case 'h': + if (*s == 'h') + ArgConverter(arg, *++s).visit(arg); + else + ArgConverter(arg, *s).visit(arg); + break; + case 'l': + if (*s == 'l') + ArgConverter(arg, *++s).visit(arg); + else + ArgConverter(arg, *s).visit(arg); + break; + case 'j': + ArgConverter(arg, *s).visit(arg); + break; + case 'z': + ArgConverter(arg, *s).visit(arg); + break; + case 't': + ArgConverter(arg, *s).visit(arg); + break; + case 'L': + // printf produces garbage when 'L' is omitted for long double, no + // need to do the same. + break; + default: + --s; + ArgConverter(arg, *s).visit(arg); + } + + // Parse type. + if (!*s) + FMT_THROW(FormatError("invalid format string")); + spec.type_ = static_cast(*s++); + if (arg.type <= Arg::LAST_INTEGER_TYPE) { + // Normalize type. + switch (spec.type_) { + case 'i': + case 'u': + spec.type_ = 'd'; + break; + case 'c': + // TODO: handle wchar_t + internal::CharConverter(arg).visit(arg); + break; + } + } + + start = s; + + // Format argument. + AF(writer_, spec).visit(arg); + } + write(writer_, start, s); +} + +template +void printf(BasicWriter &w, BasicCStringRef format, ArgList args) { + PrintfFormatter(args, w).format(format); +} + +/** +\rst +Formats arguments and returns the result as a string. + +**Example**:: + +std::string message = fmt::sprintf("The answer is %d", 42); +\endrst +*/ +inline std::string sprintf(CStringRef format, ArgList args) { + MemoryWriter w; + printf(w, format, args); + return w.str(); +} +FMT_VARIADIC(std::string, sprintf, CStringRef) + +inline std::wstring sprintf(WCStringRef format, ArgList args) { + WMemoryWriter w; + printf(w, format, args); + return w.str(); +} +FMT_VARIADIC_W(std::wstring, sprintf, WCStringRef) + +/** +\rst +Prints formatted data to the file *f*. + +**Example**:: + +fmt::fprintf(stderr, "Don't %s!", "panic"); +\endrst +*/ +FMT_API int fprintf(std::FILE *f, CStringRef format, ArgList args); +FMT_VARIADIC(int, fprintf, std::FILE *, CStringRef) + +/** +\rst +Prints formatted data to ``stdout``. + +**Example**:: + +fmt::printf("Elapsed time: %.2f seconds", 1.23); +\endrst +*/ +inline int printf(CStringRef format, ArgList args) { + return fprintf(stdout, format, args); +} +FMT_VARIADIC(int, printf, CStringRef) + +/** +\rst +Prints formatted data to the stream *os*. + +**Example**:: + +fprintf(cerr, "Don't %s!", "panic"); +\endrst +*/ +inline int fprintf(std::ostream &os, CStringRef format_str, ArgList args) { + MemoryWriter w; + printf(w, format_str, args); + internal::write(os, w); + return static_cast(w.size()); +} +FMT_VARIADIC(int, fprintf, std::ostream &, CStringRef) +} // namespace fmt + +#endif // FMT_PRINTF_H_ \ No newline at end of file