mirror of
https://github.com/pineappleEA/pineapple-src.git
synced 2024-11-29 12:48:24 -05:00
136 lines
4.3 KiB
C++
Executable File
136 lines
4.3 KiB
C++
Executable File
// Formatting library for C++ - std::ostream support
|
|
//
|
|
// Copyright (c) 2012 - present, Victor Zverovich
|
|
// All rights reserved.
|
|
//
|
|
// For the license information refer to format.h.
|
|
|
|
#ifndef FMT_OSTREAM_H_
|
|
#define FMT_OSTREAM_H_
|
|
|
|
#include <ostream>
|
|
|
|
#include "format.h"
|
|
|
|
FMT_BEGIN_NAMESPACE
|
|
|
|
template <typename OutputIt, typename Char> class basic_printf_context;
|
|
|
|
namespace detail {
|
|
|
|
// Checks if T has a user-defined operator<<.
|
|
template <typename T, typename Char, typename Enable = void>
|
|
class is_streamable {
|
|
private:
|
|
template <typename U>
|
|
static auto test(int)
|
|
-> bool_constant<sizeof(std::declval<std::basic_ostream<Char>&>()
|
|
<< std::declval<U>()) != 0>;
|
|
|
|
template <typename> static auto test(...) -> std::false_type;
|
|
|
|
using result = decltype(test<T>(0));
|
|
|
|
public:
|
|
is_streamable() = default;
|
|
|
|
static const bool value = result::value;
|
|
};
|
|
|
|
// Formatting of built-in types and arrays is intentionally disabled because
|
|
// it's handled by standard (non-ostream) formatters.
|
|
template <typename T, typename Char>
|
|
struct is_streamable<
|
|
T, Char,
|
|
enable_if_t<
|
|
std::is_arithmetic<T>::value || std::is_array<T>::value ||
|
|
std::is_pointer<T>::value || std::is_same<T, char8_type>::value ||
|
|
std::is_same<T, std::basic_string<Char>>::value ||
|
|
std::is_same<T, std_string_view<Char>>::value ||
|
|
(std::is_convertible<T, int>::value && !std::is_enum<T>::value)>>
|
|
: std::false_type {};
|
|
|
|
// Write the content of buf to os.
|
|
// It is a separate function rather than a part of vprint to simplify testing.
|
|
template <typename Char>
|
|
void write_buffer(std::basic_ostream<Char>& os, buffer<Char>& buf) {
|
|
const Char* buf_data = buf.data();
|
|
using unsigned_streamsize = std::make_unsigned<std::streamsize>::type;
|
|
unsigned_streamsize size = buf.size();
|
|
unsigned_streamsize max_size = to_unsigned(max_value<std::streamsize>());
|
|
do {
|
|
unsigned_streamsize n = size <= max_size ? size : max_size;
|
|
os.write(buf_data, static_cast<std::streamsize>(n));
|
|
buf_data += n;
|
|
size -= n;
|
|
} while (size != 0);
|
|
}
|
|
|
|
template <typename Char, typename T>
|
|
void format_value(buffer<Char>& buf, const T& value,
|
|
locale_ref loc = locale_ref()) {
|
|
auto&& format_buf = formatbuf<std::basic_streambuf<Char>>(buf);
|
|
auto&& output = std::basic_ostream<Char>(&format_buf);
|
|
#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR)
|
|
if (loc) output.imbue(loc.get<std::locale>());
|
|
#endif
|
|
output << value;
|
|
output.exceptions(std::ios_base::failbit | std::ios_base::badbit);
|
|
buf.try_resize(buf.size());
|
|
}
|
|
|
|
// Formats an object of type T that has an overloaded ostream operator<<.
|
|
template <typename T, typename Char>
|
|
struct fallback_formatter<T, Char, enable_if_t<is_streamable<T, Char>::value>>
|
|
: private formatter<basic_string_view<Char>, Char> {
|
|
using formatter<basic_string_view<Char>, Char>::parse;
|
|
|
|
template <typename OutputIt>
|
|
auto format(const T& value, basic_format_context<OutputIt, Char>& ctx)
|
|
-> OutputIt {
|
|
auto buffer = basic_memory_buffer<Char>();
|
|
format_value(buffer, value, ctx.locale());
|
|
return formatter<basic_string_view<Char>, Char>::format(
|
|
{buffer.data(), buffer.size()}, ctx);
|
|
}
|
|
|
|
// DEPRECATED!
|
|
template <typename OutputIt>
|
|
auto format(const T& value, basic_printf_context<OutputIt, Char>& ctx)
|
|
-> OutputIt {
|
|
auto buffer = basic_memory_buffer<Char>();
|
|
format_value(buffer, value, ctx.locale());
|
|
return std::copy(buffer.begin(), buffer.end(), ctx.out());
|
|
}
|
|
};
|
|
} // namespace detail
|
|
|
|
FMT_MODULE_EXPORT
|
|
template <typename Char>
|
|
void vprint(std::basic_ostream<Char>& os, basic_string_view<Char> format_str,
|
|
basic_format_args<buffer_context<type_identity_t<Char>>> args) {
|
|
auto buffer = basic_memory_buffer<Char>();
|
|
detail::vformat_to(buffer, format_str, args);
|
|
detail::write_buffer(os, buffer);
|
|
}
|
|
|
|
/**
|
|
\rst
|
|
Prints formatted data to the stream *os*.
|
|
|
|
**Example**::
|
|
|
|
fmt::print(cerr, "Don't {}!", "panic");
|
|
\endrst
|
|
*/
|
|
FMT_MODULE_EXPORT
|
|
template <typename S, typename... Args,
|
|
typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>>
|
|
void print(std::basic_ostream<Char>& os, const S& format_str, Args&&... args) {
|
|
vprint(os, to_string_view(format_str),
|
|
fmt::make_args_checked<Args...>(format_str, args...));
|
|
}
|
|
FMT_END_NAMESPACE
|
|
|
|
#endif // FMT_OSTREAM_H_
|