133 lines
3.3 KiB
C++
133 lines
3.3 KiB
C++
// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
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// Distributed under the MIT License (http://opensource.org/licenses/MIT)
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#pragma once
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#ifndef SPDLOG_HEADER_ONLY
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#include "spdlog/details/file_helper.h"
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#endif
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#include "spdlog/details/os.h"
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#include <cerrno>
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#include <chrono>
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#include <cstdio>
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#include <string>
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#include <thread>
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#include <tuple>
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namespace spdlog {
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namespace details {
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SPDLOG_INLINE file_helper::~file_helper()
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{
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close();
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}
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SPDLOG_INLINE void file_helper::open(const filename_t &fname, bool truncate)
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{
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close();
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auto *mode = truncate ? SPDLOG_FILENAME_T("wb") : SPDLOG_FILENAME_T("ab");
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_filename = fname;
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for (int tries = 0; tries < open_tries; ++tries)
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{
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if (!os::fopen_s(&fd_, fname, mode))
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{
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return;
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}
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details::os::sleep_for_millis(open_interval);
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}
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SPDLOG_THROW(spdlog_ex("Failed opening file " + os::filename_to_str(_filename) + " for writing", errno));
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}
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SPDLOG_INLINE void file_helper::reopen(bool truncate)
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{
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if (_filename.empty())
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{
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SPDLOG_THROW(spdlog_ex("Failed re opening file - was not opened before"));
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}
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open(_filename, truncate);
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}
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SPDLOG_INLINE void file_helper::flush()
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{
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std::fflush(fd_);
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}
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SPDLOG_INLINE void file_helper::close()
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{
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if (fd_ != nullptr)
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{
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std::fclose(fd_);
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fd_ = nullptr;
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}
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}
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SPDLOG_INLINE void file_helper::write(const fmt::memory_buffer &buf)
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{
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size_t msg_size = buf.size();
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auto data = buf.data();
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if (std::fwrite(data, 1, msg_size, fd_) != msg_size)
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{
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SPDLOG_THROW(spdlog_ex("Failed writing to file " + os::filename_to_str(_filename), errno));
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}
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}
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SPDLOG_INLINE size_t file_helper::size() const
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{
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if (fd_ == nullptr)
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{
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SPDLOG_THROW(spdlog_ex("Cannot use size() on closed file " + os::filename_to_str(_filename)));
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}
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return os::filesize(fd_);
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}
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SPDLOG_INLINE const filename_t &file_helper::filename() const
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{
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return _filename;
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}
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SPDLOG_INLINE bool file_helper::file_exists(const filename_t &fname)
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{
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return os::file_exists(fname);
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}
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//
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// return file path and its extension:
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//
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// "mylog.txt" => ("mylog", ".txt")
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// "mylog" => ("mylog", "")
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// "mylog." => ("mylog.", "")
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// "/dir1/dir2/mylog.txt" => ("/dir1/dir2/mylog", ".txt")
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//
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// the starting dot in filenames is ignored (hidden files):
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//
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// ".mylog" => (".mylog". "")
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// "my_folder/.mylog" => ("my_folder/.mylog", "")
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// "my_folder/.mylog.txt" => ("my_folder/.mylog", ".txt")
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SPDLOG_INLINE std::tuple<filename_t, filename_t> file_helper::split_by_extension(const filename_t &fname)
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{
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auto ext_index = fname.rfind('.');
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// no valid extension found - return whole path and empty string as
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// extension
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if (ext_index == filename_t::npos || ext_index == 0 || ext_index == fname.size() - 1)
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{
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return std::make_tuple(fname, filename_t());
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}
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// treat casese like "/etc/rc.d/somelogfile or "/abc/.hiddenfile"
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auto folder_index = fname.rfind(details::os::folder_sep);
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if (folder_index != filename_t::npos && folder_index >= ext_index - 1)
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{
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return std::make_tuple(fname, filename_t());
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}
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// finally - return a valid base and extension tuple
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return std::make_tuple(fname.substr(0, ext_index), fname.substr(ext_index));
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}
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} // namespace details
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} // namespace spdlog
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