mirror of https://github.com/gabime/spdlog.git
Merge 9f01a3ff71 into c639483db0
Ben Berman
7 years ago
committed by
GitHub
commit
05f924faae
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,540 @@
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// Formatting library for C++
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//
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// Copyright (c) 2012 - 2016, Victor Zverovich
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// All rights reserved.
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//
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// For the license information refer to format.h.
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#ifndef FMT_FORMAT_INL_H_
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#define FMT_FORMAT_INL_H_
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#include "format.h"
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|
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#include <string.h>
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|
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#include <cctype>
|
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#include <cerrno>
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#include <climits>
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#include <cmath>
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#include <cstdarg>
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#include <cstddef> // for std::ptrdiff_t
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#include <locale>
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|
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#if defined(_WIN32) && defined(__MINGW32__)
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# include <cstring>
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#endif
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||||
|
||||
#if FMT_USE_WINDOWS_H
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# if !defined(FMT_HEADER_ONLY) && !defined(WIN32_LEAN_AND_MEAN)
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# define WIN32_LEAN_AND_MEAN
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# endif
|
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# if defined(NOMINMAX) || defined(FMT_WIN_MINMAX)
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# include <windows.h>
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# else
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# define NOMINMAX
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# include <windows.h>
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# undef NOMINMAX
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# endif
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#endif
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|
||||
#if FMT_EXCEPTIONS
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# define FMT_TRY try
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# define FMT_CATCH(x) catch (x)
|
||||
#else
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||||
# define FMT_TRY if (true)
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# define FMT_CATCH(x) if (false)
|
||||
#endif
|
||||
|
||||
#ifdef __GNUC__
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||||
// Disable the warning about declaration shadowing because it affects too
|
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// many valid cases.
|
||||
# pragma GCC diagnostic ignored "-Wshadow"
|
||||
#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.
|
||||
inline fmt::internal::null<> strerror_r(int, char *, ...) {
|
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return fmt::internal::null<>();
|
||||
}
|
||||
inline fmt::internal::null<> strerror_s(char *, std::size_t, ...) {
|
||||
return fmt::internal::null<>();
|
||||
}
|
||||
|
||||
FMT_BEGIN_NAMESPACE
|
||||
|
||||
FMT_FUNC format_error::~format_error() throw() {}
|
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FMT_FUNC system_error::~system_error() FMT_DTOR_NOEXCEPT {}
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|
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namespace {
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|
||||
#ifndef _MSC_VER
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# define FMT_SNPRINTF snprintf
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#else // _MSC_VER
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inline int fmt_snprintf(char *buffer, size_t size, const char *format, ...) {
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va_list args;
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va_start(args, format);
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int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args);
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va_end(args);
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return result;
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}
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# define FMT_SNPRINTF fmt_snprintf
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#endif // _MSC_VER
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|
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#if defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT)
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# define FMT_SWPRINTF snwprintf
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#else
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# define FMT_SWPRINTF swprintf
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#endif // defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT)
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|
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const char RESET_COLOR[] = "\x1b[0m";
|
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const wchar_t WRESET_COLOR[] = L"\x1b[0m";
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|
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typedef void (*FormatFunc)(internal::buffer &, int, string_view);
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|
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// Portable thread-safe version of strerror.
|
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// Sets buffer to point to a string describing the error code.
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// This can be either a pointer to a string stored in buffer,
|
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// or a pointer to some static immutable string.
|
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// Returns one of the following values:
|
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// 0 - success
|
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// ERANGE - buffer is not large enough to store the error message
|
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// other - failure
|
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// Buffer should be at least of size 1.
|
||||
int safe_strerror(
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int error_code, char *&buffer, std::size_t buffer_size) FMT_NOEXCEPT {
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FMT_ASSERT(buffer != FMT_NULL && buffer_size != 0, "invalid buffer");
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||||
|
||||
class dispatcher {
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private:
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||||
int error_code_;
|
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char *&buffer_;
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std::size_t buffer_size_;
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||||
|
||||
// A noop assignment operator to avoid bogus warnings.
|
||||
void operator=(const dispatcher &) {}
|
||||
|
||||
// Handle the result of XSI-compliant version of strerror_r.
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int handle(int result) {
|
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// glibc versions before 2.13 return result in errno.
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return result == -1 ? errno : result;
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}
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|
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// Handle the result of GNU-specific version of strerror_r.
|
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int handle(char *message) {
|
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// If the buffer is full then the message is probably truncated.
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if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1)
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return ERANGE;
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buffer_ = message;
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return 0;
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}
|
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|
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// Handle the case when strerror_r is not available.
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int handle(internal::null<>) {
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return fallback(strerror_s(buffer_, buffer_size_, error_code_));
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}
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|
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// Fallback to strerror_s when strerror_r is not available.
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int fallback(int result) {
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// If the buffer is full then the message is probably truncated.
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return result == 0 && strlen(buffer_) == buffer_size_ - 1 ?
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ERANGE : result;
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}
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|
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// Fallback to strerror if strerror_r and strerror_s are not available.
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int fallback(internal::null<>) {
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errno = 0;
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buffer_ = strerror(error_code_);
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return errno;
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}
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public:
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dispatcher(int err_code, char *&buf, std::size_t buf_size)
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: error_code_(err_code), buffer_(buf), buffer_size_(buf_size) {}
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|
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int run() {
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return handle(strerror_r(error_code_, buffer_, buffer_size_));
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}
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};
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return dispatcher(error_code, buffer, buffer_size).run();
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}
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|
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void format_error_code(internal::buffer &out, int error_code,
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string_view message) FMT_NOEXCEPT {
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// Report error code making sure that the output fits into
|
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// inline_buffer_size to avoid dynamic memory allocation and potential
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// bad_alloc.
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out.resize(0);
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static const char SEP[] = ": ";
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static const char ERROR_STR[] = "error ";
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// Subtract 2 to account for terminating null characters in SEP and ERROR_STR.
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std::size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2;
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typedef internal::int_traits<int>::main_type main_type;
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main_type abs_value = static_cast<main_type>(error_code);
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if (internal::is_negative(error_code)) {
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abs_value = 0 - abs_value;
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++error_code_size;
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}
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error_code_size += internal::count_digits(abs_value);
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writer w(out);
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if (message.size() <= inline_buffer_size - error_code_size) {
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w.write(message);
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w.write(SEP);
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}
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w.write(ERROR_STR);
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w.write(error_code);
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assert(out.size() <= inline_buffer_size);
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}
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void report_error(FormatFunc func, int error_code,
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string_view message) FMT_NOEXCEPT {
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memory_buffer full_message;
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func(full_message, error_code, message);
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// Use Writer::data instead of Writer::c_str to avoid potential memory
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// allocation.
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std::fwrite(full_message.data(), full_message.size(), 1, stderr);
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std::fputc('\n', stderr);
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}
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} // namespace
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class locale {
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private:
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std::locale locale_;
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public:
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explicit locale(std::locale loc = std::locale()) : locale_(loc) {}
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std::locale get() { return locale_; }
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};
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template <typename Char>
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FMT_FUNC Char internal::thousands_sep(locale_provider *lp) {
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std::locale loc = lp ? lp->locale().get() : std::locale();
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return std::use_facet<std::numpunct<Char>>(loc).thousands_sep();
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}
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FMT_FUNC void system_error::init(
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int err_code, string_view format_str, format_args args) {
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error_code_ = err_code;
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memory_buffer buffer;
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format_system_error(buffer, err_code, vformat(format_str, args));
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std::runtime_error &base = *this;
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base = std::runtime_error(to_string(buffer));
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}
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namespace internal {
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template <typename T>
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int char_traits<char>::format_float(
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char *buffer, std::size_t size, const char *format,
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unsigned width, int precision, T value) {
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if (width == 0) {
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return precision < 0 ?
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FMT_SNPRINTF(buffer, size, format, value) :
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FMT_SNPRINTF(buffer, size, format, precision, value);
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}
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return precision < 0 ?
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FMT_SNPRINTF(buffer, size, format, width, value) :
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FMT_SNPRINTF(buffer, size, format, width, precision, value);
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}
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template <typename T>
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int char_traits<wchar_t>::format_float(
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wchar_t *buffer, std::size_t size, const wchar_t *format,
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unsigned width, int precision, T value) {
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if (width == 0) {
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return precision < 0 ?
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FMT_SWPRINTF(buffer, size, format, value) :
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FMT_SWPRINTF(buffer, size, format, precision, value);
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}
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return precision < 0 ?
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FMT_SWPRINTF(buffer, size, format, width, value) :
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FMT_SWPRINTF(buffer, size, format, width, precision, value);
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}
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template <typename T>
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const char basic_data<T>::DIGITS[] =
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"0001020304050607080910111213141516171819"
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"2021222324252627282930313233343536373839"
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"4041424344454647484950515253545556575859"
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"6061626364656667686970717273747576777879"
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"8081828384858687888990919293949596979899";
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#define FMT_POWERS_OF_10(factor) \
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factor * 10, \
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factor * 100, \
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factor * 1000, \
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factor * 10000, \
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factor * 100000, \
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factor * 1000000, \
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factor * 10000000, \
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factor * 100000000, \
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factor * 1000000000
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template <typename T>
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const uint32_t basic_data<T>::POWERS_OF_10_32[] = {
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0, FMT_POWERS_OF_10(1)
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};
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template <typename T>
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const uint64_t basic_data<T>::POWERS_OF_10_64[] = {
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0,
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FMT_POWERS_OF_10(1),
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FMT_POWERS_OF_10(1000000000ull),
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10000000000000000000ull
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};
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// Normalized 64-bit significands of pow(10, k), for k = -348, -340, ..., 340.
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// These are generated by support/compute-powers.py.
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template <typename T>
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const uint64_t basic_data<T>::POW10_SIGNIFICANDS[] = {
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0xfa8fd5a0081c0288ull, 0xbaaee17fa23ebf76ull, 0x8b16fb203055ac76ull,
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0xcf42894a5dce35eaull, 0x9a6bb0aa55653b2dull, 0xe61acf033d1a45dfull,
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0xab70fe17c79ac6caull, 0xff77b1fcbebcdc4full, 0xbe5691ef416bd60cull,
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0x8dd01fad907ffc3cull, 0xd3515c2831559a83ull, 0x9d71ac8fada6c9b5ull,
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0xea9c227723ee8bcbull, 0xaecc49914078536dull, 0x823c12795db6ce57ull,
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0xc21094364dfb5637ull, 0x9096ea6f3848984full, 0xd77485cb25823ac7ull,
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0xa086cfcd97bf97f4ull, 0xef340a98172aace5ull, 0xb23867fb2a35b28eull,
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0x84c8d4dfd2c63f3bull, 0xc5dd44271ad3cdbaull, 0x936b9fcebb25c996ull,
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0xdbac6c247d62a584ull, 0xa3ab66580d5fdaf6ull, 0xf3e2f893dec3f126ull,
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0xb5b5ada8aaff80b8ull, 0x87625f056c7c4a8bull, 0xc9bcff6034c13053ull,
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0x964e858c91ba2655ull, 0xdff9772470297ebdull, 0xa6dfbd9fb8e5b88full,
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0xf8a95fcf88747d94ull, 0xb94470938fa89bcfull, 0x8a08f0f8bf0f156bull,
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0xcdb02555653131b6ull, 0x993fe2c6d07b7facull, 0xe45c10c42a2b3b06ull,
|
||||
0xaa242499697392d3ull, 0xfd87b5f28300ca0eull, 0xbce5086492111aebull,
|
||||
0x8cbccc096f5088ccull, 0xd1b71758e219652cull, 0x9c40000000000000ull,
|
||||
0xe8d4a51000000000ull, 0xad78ebc5ac620000ull, 0x813f3978f8940984ull,
|
||||
0xc097ce7bc90715b3ull, 0x8f7e32ce7bea5c70ull, 0xd5d238a4abe98068ull,
|
||||
0x9f4f2726179a2245ull, 0xed63a231d4c4fb27ull, 0xb0de65388cc8ada8ull,
|
||||
0x83c7088e1aab65dbull, 0xc45d1df942711d9aull, 0x924d692ca61be758ull,
|
||||
0xda01ee641a708deaull, 0xa26da3999aef774aull, 0xf209787bb47d6b85ull,
|
||||
0xb454e4a179dd1877ull, 0x865b86925b9bc5c2ull, 0xc83553c5c8965d3dull,
|
||||
0x952ab45cfa97a0b3ull, 0xde469fbd99a05fe3ull, 0xa59bc234db398c25ull,
|
||||
0xf6c69a72a3989f5cull, 0xb7dcbf5354e9beceull, 0x88fcf317f22241e2ull,
|
||||
0xcc20ce9bd35c78a5ull, 0x98165af37b2153dfull, 0xe2a0b5dc971f303aull,
|
||||
0xa8d9d1535ce3b396ull, 0xfb9b7cd9a4a7443cull, 0xbb764c4ca7a44410ull,
|
||||
0x8bab8eefb6409c1aull, 0xd01fef10a657842cull, 0x9b10a4e5e9913129ull,
|
||||
0xe7109bfba19c0c9dull, 0xac2820d9623bf429ull, 0x80444b5e7aa7cf85ull,
|
||||
0xbf21e44003acdd2dull, 0x8e679c2f5e44ff8full, 0xd433179d9c8cb841ull,
|
||||
0x9e19db92b4e31ba9ull, 0xeb96bf6ebadf77d9ull, 0xaf87023b9bf0ee6bull
|
||||
};
|
||||
|
||||
// Binary exponents of pow(10, k), for k = -348, -340, ..., 340, corresponding
|
||||
// to significands above.
|
||||
template <typename T>
|
||||
const int16_t basic_data<T>::POW10_EXPONENTS[] = {
|
||||
-1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980, -954,
|
||||
-927, -901, -874, -847, -821, -794, -768, -741, -715, -688, -661,
|
||||
-635, -608, -582, -555, -529, -502, -475, -449, -422, -396, -369,
|
||||
-343, -316, -289, -263, -236, -210, -183, -157, -130, -103, -77,
|
||||
-50, -24, 3, 30, 56, 83, 109, 136, 162, 189, 216,
|
||||
242, 269, 295, 322, 348, 375, 402, 428, 455, 481, 508,
|
||||
534, 561, 588, 614, 641, 667, 694, 720, 747, 774, 800,
|
||||
827, 853, 880, 907, 933, 960, 986, 1013, 1039, 1066
|
||||
};
|
||||
|
||||
FMT_FUNC fp operator*(fp x, fp y) {
|
||||
// Multiply 32-bit parts of significands.
|
||||
uint64_t mask = (1ULL << 32) - 1;
|
||||
uint64_t a = x.f >> 32, b = x.f & mask;
|
||||
uint64_t c = y.f >> 32, d = y.f & mask;
|
||||
uint64_t ac = a * c, bc = b * c, ad = a * d, bd = b * d;
|
||||
// Compute mid 64-bit of result and round.
|
||||
uint64_t mid = (bd >> 32) + (ad & mask) + (bc & mask) + (1U << 31);
|
||||
return fp(ac + (ad >> 32) + (bc >> 32) + (mid >> 32), x.e + y.e + 64);
|
||||
}
|
||||
} // namespace internal
|
||||
|
||||
#if FMT_USE_WINDOWS_H
|
||||
|
||||
FMT_FUNC internal::utf8_to_utf16::utf8_to_utf16(string_view s) {
|
||||
static const char ERROR_MSG[] = "cannot convert string from UTF-8 to UTF-16";
|
||||
if (s.size() > INT_MAX)
|
||||
FMT_THROW(windows_error(ERROR_INVALID_PARAMETER, ERROR_MSG));
|
||||
int s_size = static_cast<int>(s.size());
|
||||
if (s_size == 0) {
|
||||
// MultiByteToWideChar does not support zero length, handle separately.
|
||||
buffer_.resize(1);
|
||||
buffer_[0] = 0;
|
||||
return;
|
||||
}
|
||||
|
||||
int length = MultiByteToWideChar(
|
||||
CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, FMT_NULL, 0);
|
||||
if (length == 0)
|
||||
FMT_THROW(windows_error(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(windows_error(GetLastError(), ERROR_MSG));
|
||||
buffer_[length] = 0;
|
||||
}
|
||||
|
||||
FMT_FUNC internal::utf16_to_utf8::utf16_to_utf8(wstring_view s) {
|
||||
if (int error_code = convert(s)) {
|
||||
FMT_THROW(windows_error(error_code,
|
||||
"cannot convert string from UTF-16 to UTF-8"));
|
||||
}
|
||||
}
|
||||
|
||||
FMT_FUNC int internal::utf16_to_utf8::convert(wstring_view s) {
|
||||
if (s.size() > INT_MAX)
|
||||
return ERROR_INVALID_PARAMETER;
|
||||
int s_size = static_cast<int>(s.size());
|
||||
if (s_size == 0) {
|
||||
// WideCharToMultiByte does not support zero length, handle separately.
|
||||
buffer_.resize(1);
|
||||
buffer_[0] = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int length = WideCharToMultiByte(
|
||||
CP_UTF8, 0, s.data(), s_size, FMT_NULL, 0, FMT_NULL, FMT_NULL);
|
||||
if (length == 0)
|
||||
return GetLastError();
|
||||
buffer_.resize(length + 1);
|
||||
length = WideCharToMultiByte(
|
||||
CP_UTF8, 0, s.data(), s_size, &buffer_[0], length, FMT_NULL, FMT_NULL);
|
||||
if (length == 0)
|
||||
return GetLastError();
|
||||
buffer_[length] = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
FMT_FUNC void windows_error::init(
|
||||
int err_code, string_view format_str, format_args args) {
|
||||
error_code_ = err_code;
|
||||
memory_buffer buffer;
|
||||
internal::format_windows_error(buffer, err_code, vformat(format_str, args));
|
||||
std::runtime_error &base = *this;
|
||||
base = std::runtime_error(to_string(buffer));
|
||||
}
|
||||
|
||||
FMT_FUNC void internal::format_windows_error(
|
||||
internal::buffer &out, int error_code, string_view message) FMT_NOEXCEPT {
|
||||
FMT_TRY {
|
||||
wmemory_buffer buf;
|
||||
buf.resize(inline_buffer_size);
|
||||
for (;;) {
|
||||
wchar_t *system_message = &buf[0];
|
||||
int result = FormatMessageW(
|
||||
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
|
||||
FMT_NULL, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
|
||||
system_message, static_cast<uint32_t>(buf.size()), FMT_NULL);
|
||||
if (result != 0) {
|
||||
utf16_to_utf8 utf8_message;
|
||||
if (utf8_message.convert(system_message) == ERROR_SUCCESS) {
|
||||
writer w(out);
|
||||
w.write(message);
|
||||
w.write(": ");
|
||||
w.write(utf8_message);
|
||||
return;
|
||||
}
|
||||
break;
|
||||
}
|
||||
if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
|
||||
break; // Can't get error message, report error code instead.
|
||||
buf.resize(buf.size() * 2);
|
||||
}
|
||||
} FMT_CATCH(...) {}
|
||||
format_error_code(out, error_code, message);
|
||||
}
|
||||
|
||||
#endif // FMT_USE_WINDOWS_H
|
||||
|
||||
FMT_FUNC void format_system_error(
|
||||
internal::buffer &out, int error_code, string_view message) FMT_NOEXCEPT {
|
||||
FMT_TRY {
|
||||
memory_buffer buf;
|
||||
buf.resize(inline_buffer_size);
|
||||
for (;;) {
|
||||
char *system_message = &buf[0];
|
||||
int result = safe_strerror(error_code, system_message, buf.size());
|
||||
if (result == 0) {
|
||||
writer w(out);
|
||||
w.write(message);
|
||||
w.write(": ");
|
||||
w.write(system_message);
|
||||
return;
|
||||
}
|
||||
if (result != ERANGE)
|
||||
break; // Can't get error message, report error code instead.
|
||||
buf.resize(buf.size() * 2);
|
||||
}
|
||||
} FMT_CATCH(...) {}
|
||||
format_error_code(out, error_code, message);
|
||||
}
|
||||
|
||||
template <typename Char>
|
||||
void basic_fixed_buffer<Char>::grow(std::size_t) {
|
||||
FMT_THROW(std::runtime_error("buffer overflow"));
|
||||
}
|
||||
|
||||
FMT_FUNC void internal::error_handler::on_error(const char *message) {
|
||||
FMT_THROW(format_error(message));
|
||||
}
|
||||
|
||||
FMT_FUNC void report_system_error(
|
||||
int error_code, fmt::string_view message) FMT_NOEXCEPT {
|
||||
report_error(format_system_error, error_code, message);
|
||||
}
|
||||
|
||||
#if FMT_USE_WINDOWS_H
|
||||
FMT_FUNC void report_windows_error(
|
||||
int error_code, fmt::string_view message) FMT_NOEXCEPT {
|
||||
report_error(internal::format_windows_error, error_code, message);
|
||||
}
|
||||
#endif
|
||||
|
||||
FMT_FUNC void vprint(std::FILE *f, string_view format_str, format_args args) {
|
||||
memory_buffer buffer;
|
||||
vformat_to(buffer, format_str, args);
|
||||
std::fwrite(buffer.data(), 1, buffer.size(), f);
|
||||
}
|
||||
|
||||
FMT_FUNC void vprint(std::FILE *f, wstring_view format_str, wformat_args args) {
|
||||
wmemory_buffer buffer;
|
||||
vformat_to(buffer, format_str, args);
|
||||
std::fwrite(buffer.data(), sizeof(wchar_t), buffer.size(), f);
|
||||
}
|
||||
|
||||
FMT_FUNC void vprint(string_view format_str, format_args args) {
|
||||
vprint(stdout, format_str, args);
|
||||
}
|
||||
|
||||
FMT_FUNC void vprint(wstring_view format_str, wformat_args args) {
|
||||
vprint(stdout, format_str, args);
|
||||
}
|
||||
|
||||
FMT_FUNC void vprint_colored(color c, string_view format, format_args args) {
|
||||
char escape[] = "\x1b[30m";
|
||||
escape[3] = static_cast<char>('0' + c);
|
||||
std::fputs(escape, stdout);
|
||||
vprint(format, args);
|
||||
std::fputs(RESET_COLOR, stdout);
|
||||
}
|
||||
|
||||
FMT_FUNC void vprint_colored(color c, wstring_view format, wformat_args args) {
|
||||
wchar_t escape[] = L"\x1b[30m";
|
||||
escape[3] = static_cast<wchar_t>('0' + c);
|
||||
std::fputws(escape, stdout);
|
||||
vprint(format, args);
|
||||
std::fputws(WRESET_COLOR, stdout);
|
||||
}
|
||||
|
||||
FMT_FUNC locale locale_provider::locale() { return fmt::locale(); }
|
||||
|
||||
FMT_END_NAMESPACE
|
||||
|
||||
#ifdef _MSC_VER
|
||||
# pragma warning(pop)
|
||||
#endif
|
||||
|
||||
#endif // FMT_FORMAT_INL_H_
|
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,243 @@
|
||||
// Formatting library for C++ - the core API
|
||||
//
|
||||
// Copyright (c) 2012 - present, Victor Zverovich
|
||||
// All rights reserved.
|
||||
//
|
||||
// For the license information refer to format.h.
|
||||
//
|
||||
// Copyright (c) 2018 - present, Remotion (Igor Schulz)
|
||||
// All Rights Reserved
|
||||
// {fmt} support for ranges, containers and types tuple interface.
|
||||
|
||||
#ifndef FMT_RANGES_H_
|
||||
#define FMT_RANGES_H_
|
||||
|
||||
#include "format.h"
|
||||
#include <type_traits>
|
||||
|
||||
// output only up to N items from the range.
|
||||
#ifndef FMT_RANGE_OUTPUT_LENGTH_LIMIT
|
||||
# define FMT_RANGE_OUTPUT_LENGTH_LIMIT 256
|
||||
#endif
|
||||
|
||||
FMT_BEGIN_NAMESPACE
|
||||
|
||||
template <typename Char>
|
||||
struct formatting_base {
|
||||
template <typename ParseContext>
|
||||
FMT_CONSTEXPR auto parse(ParseContext &ctx) -> decltype(ctx.begin()) {
|
||||
return ctx.begin();
|
||||
}
|
||||
};
|
||||
|
||||
template <typename Char, typename Enable = void>
|
||||
struct formatting_range : formatting_base<Char> {
|
||||
static FMT_CONSTEXPR_DECL const std::size_t range_length_limit =
|
||||
FMT_RANGE_OUTPUT_LENGTH_LIMIT; // output only up to N items from the range.
|
||||
Char prefix;
|
||||
Char delimiter;
|
||||
Char postfix;
|
||||
formatting_range() : prefix('{'), delimiter(','), postfix('}') {}
|
||||
static FMT_CONSTEXPR_DECL const bool add_delimiter_spaces = true;
|
||||
static FMT_CONSTEXPR_DECL const bool add_prepostfix_space = false;
|
||||
};
|
||||
|
||||
template <typename Char, typename Enable = void>
|
||||
struct formatting_tuple : formatting_base<Char> {
|
||||
Char prefix;
|
||||
Char delimiter;
|
||||
Char postfix;
|
||||
formatting_tuple() : prefix('('), delimiter(','), postfix(')') {}
|
||||
static FMT_CONSTEXPR_DECL const bool add_delimiter_spaces = true;
|
||||
static FMT_CONSTEXPR_DECL const bool add_prepostfix_space = false;
|
||||
};
|
||||
|
||||
namespace internal {
|
||||
|
||||
template <typename RangeT, typename OutputIterator>
|
||||
void copy(const RangeT &range, OutputIterator out) {
|
||||
for (auto it = range.begin(), end = range.end(); it != end; ++it)
|
||||
*out++ = *it;
|
||||
}
|
||||
|
||||
template <typename OutputIterator>
|
||||
void copy(const char *str, OutputIterator out) {
|
||||
const char *p_curr = str;
|
||||
while (*p_curr) {
|
||||
*out++ = *p_curr++;
|
||||
}
|
||||
}
|
||||
|
||||
template <typename OutputIterator>
|
||||
void copy(char ch, OutputIterator out) {
|
||||
*out++ = ch;
|
||||
}
|
||||
|
||||
/// Return true value if T has std::string interface, like std::string_view.
|
||||
template <typename T>
|
||||
class is_like_std_string {
|
||||
template <typename U>
|
||||
static auto check(U *p) ->
|
||||
decltype(p->find('a'), p->length(), p->data(), int());
|
||||
template <typename>
|
||||
static void check(...);
|
||||
|
||||
public:
|
||||
static FMT_CONSTEXPR_DECL const bool value =
|
||||
!std::is_void<decltype(check<T>(FMT_NULL))>::value;
|
||||
};
|
||||
|
||||
template <typename... Ts>
|
||||
struct conditional_helper {};
|
||||
|
||||
template <typename T, typename _ = void>
|
||||
struct is_range_ : std::false_type {};
|
||||
|
||||
template <typename T>
|
||||
struct is_range_<T,typename std::conditional<
|
||||
false,
|
||||
conditional_helper<decltype(internal::declval<T>().begin()),
|
||||
decltype(internal::declval<T>().end())>,
|
||||
void>::type> : std::true_type {};
|
||||
|
||||
template <typename T>
|
||||
struct is_range {
|
||||
static FMT_CONSTEXPR_DECL const bool value =
|
||||
is_range_<T>::value && !is_like_std_string<T>::value;
|
||||
};
|
||||
|
||||
/// tuple_size and tuple_element check.
|
||||
template <typename T>
|
||||
class is_tuple_like_ {
|
||||
template <typename U>
|
||||
static auto check(U *p) ->
|
||||
decltype(std::tuple_size<U>::value,
|
||||
internal::declval<typename std::tuple_element<0, U>::type>(), int());
|
||||
template <typename>
|
||||
static void check(...);
|
||||
|
||||
public:
|
||||
static FMT_CONSTEXPR_DECL const bool value =
|
||||
!std::is_void<decltype(check<T>(FMT_NULL))>::value;
|
||||
};
|
||||
|
||||
template <typename T>
|
||||
struct is_tuple_like {
|
||||
static FMT_CONSTEXPR_DECL const bool value =
|
||||
is_tuple_like_<T>::value && !is_range_<T>::value;
|
||||
};
|
||||
} // namespace internal
|
||||
|
||||
#if FMT_HAS_FEATURE(__cpp_lib_integer_sequence) || FMT_MSC_VER >= 1900
|
||||
# define FMT_USE_INTEGER_SEQUENCE 1
|
||||
#else
|
||||
# define FMT_USE_INTEGER_SEQUENCE 0
|
||||
#endif
|
||||
|
||||
#if FMT_USE_INTEGER_SEQUENCE
|
||||
namespace internal {
|
||||
template <size_t... Is, class Tuple, class F>
|
||||
void for_each(std::index_sequence<Is...>, Tuple &&tup, F &&f) noexcept {
|
||||
using std::get;
|
||||
// using free function get<I>(T) now.
|
||||
const int _[] = {0, ((void)f(get<Is>(tup)), 0)...};
|
||||
(void)_; // blocks warnings
|
||||
}
|
||||
|
||||
template <class T>
|
||||
FMT_CONSTEXPR std::make_index_sequence<std::tuple_size<T>::value>
|
||||
get_indexes(T const &) { return {}; }
|
||||
|
||||
template <class Tuple, class F>
|
||||
void for_each(Tuple &&tup, F &&f) {
|
||||
const auto indexes = get_indexes(tup);
|
||||
for_each(indexes, std::forward<Tuple>(tup), std::forward<F>(f));
|
||||
}
|
||||
} // namespace internal
|
||||
|
||||
template <typename TupleT, typename Char>
|
||||
struct formatter<TupleT, Char,
|
||||
typename std::enable_if<fmt::internal::is_tuple_like<TupleT>::value>::type> {
|
||||
|
||||
fmt::formatting_tuple<Char> formatting;
|
||||
|
||||
template <typename ParseContext>
|
||||
FMT_CONSTEXPR auto parse(ParseContext &ctx) -> decltype(ctx.begin()) {
|
||||
return formatting.parse(ctx);
|
||||
}
|
||||
|
||||
template <typename FormatContext = format_context>
|
||||
auto format(const TupleT &values, FormatContext &ctx) -> decltype(ctx.out()) {
|
||||
auto out = ctx.out();
|
||||
std::size_t i = 0;
|
||||
internal::copy(formatting.prefix, out);
|
||||
internal::for_each(values, [&](const auto &v) {
|
||||
if (i > 0) {
|
||||
if (formatting.add_prepostfix_space) {
|
||||
*out++ = ' ';
|
||||
}
|
||||
internal::copy(formatting.delimiter, out);
|
||||
}
|
||||
if (formatting.add_delimiter_spaces && i > 0) {
|
||||
format_to(out, " {}", v);
|
||||
} else {
|
||||
format_to(out, "{}", v);
|
||||
}
|
||||
++i;
|
||||
});
|
||||
if (formatting.add_prepostfix_space) {
|
||||
*out++ = ' ';
|
||||
}
|
||||
internal::copy(formatting.postfix, out);
|
||||
|
||||
return ctx.out();
|
||||
}
|
||||
};
|
||||
#endif // FMT_USE_INTEGER_SEQUENCE
|
||||
|
||||
template <typename RangeT, typename Char>
|
||||
struct formatter< RangeT, Char,
|
||||
typename std::enable_if<fmt::internal::is_range<RangeT>::value>::type> {
|
||||
|
||||
fmt::formatting_range<Char> formatting;
|
||||
|
||||
template <typename ParseContext>
|
||||
FMT_CONSTEXPR auto parse(ParseContext &ctx) -> decltype(ctx.begin()) {
|
||||
return formatting.parse(ctx);
|
||||
}
|
||||
|
||||
template <typename FormatContext>
|
||||
typename FormatContext::iterator format(
|
||||
const RangeT &values, FormatContext &ctx) {
|
||||
auto out = ctx.out();
|
||||
internal::copy(formatting.prefix, out);
|
||||
std::size_t i = 0;
|
||||
for (auto it = values.begin(), end = values.end(); it != end; ++it) {
|
||||
if (i > 0) {
|
||||
if (formatting.add_prepostfix_space) {
|
||||
*out++ = ' ';
|
||||
}
|
||||
internal::copy(formatting.delimiter, out);
|
||||
}
|
||||
if (formatting.add_delimiter_spaces && i > 0) {
|
||||
format_to(out, " {}", *it);
|
||||
} else {
|
||||
format_to(out, "{}", *it);
|
||||
}
|
||||
if (++i > formatting.range_length_limit) {
|
||||
format_to(out, " ... <other elements>");
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (formatting.add_prepostfix_space) {
|
||||
*out++ = ' ';
|
||||
}
|
||||
internal::copy(formatting.postfix, out);
|
||||
return ctx.out();
|
||||
}
|
||||
};
|
||||
|
||||
FMT_END_NAMESPACE
|
||||
|
||||
#endif // FMT_RANGES_H_
|
||||
|
||||
Loading…
Reference in New Issue