spdlog/include/c11log/details/fast_oss.h

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2014-01-25 04:09:04 -05:00
#pragma once
#include<streambuf>
#include<string>
namespace c11log {
namespace details {
class str_devicebuf:public std::streambuf {
public:
str_devicebuf()
{
_str.reserve(128);
}
const std::string& str_ref()
{
return _str;
}
void clear()
{
_str.clear();
}
protected:
virtual int sync() override
{
return 0;
}
virtual std::streamsize xsputn(const char_type* s, std::streamsize count) override
{
_str.append(s, static_cast<unsigned int>(count));
return count;
}
virtual int_type overflow(int_type ch) override
{
if (ch != traits_type::eof())
_str.append((char*)&ch, 1);
return 1;
}
private:
std::string _str;
};
class fast_oss:public std::ostream {
public:
fast_oss():std::ostream(&_dev)
{}
~fast_oss()
{}
const std::string& str_ref() const
{
auto mydevice = static_cast<str_devicebuf*>(rdbuf());
return mydevice->str_ref();
}
const std::string str() const
{
auto mydevice = static_cast<str_devicebuf*>(rdbuf());
return mydevice->str_ref();
}
void clear()
{
auto mydevice = static_cast<str_devicebuf*>(rdbuf());
mydevice->clear();
}
private:
str_devicebuf _dev;
};
}
}