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/* Copyright © 2007-2016 Jakub Wilk <jwilk@jwilk.net>
* Copyright © 2009 Mateusz Turcza
*
* This file is part of pdf2djvu.
*
* pdf2djvu is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* pdf2djvu is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#include "string-printf.hh"
#include <cerrno>
#include <climits>
#include <cstdarg>
#include <cstdio>
#include <string>
#include <vector>
#include "autoconf.hh"
#include "system.hh"
#if USE_MINGW_ANSI_STDIO
// https://sourceforge.net/p/mingw-w64/wiki2/gnu%20printf/
#define vsnprintf __mingw_vsnprintf
#endif
std::string string_vprintf(const char *message, va_list args)
{
va_list args_copy;
va_copy(args_copy, args);
int length = vsnprintf(nullptr, 0, message, args_copy);
va_end(args_copy);
if (length < 0)
throw_posix_error("vsnprintf()");
if (length == INT_MAX) {
errno = ENOMEM;
throw_posix_error("vsnprintf()");
}
std::vector<char> buffer(length + 1);
length = vsprintf(buffer.data(), message, args);
if (length < 0)
throw_posix_error("vsprintf()");
return buffer.data();
}
std::string string_printf(const char *message, ...)
{
va_list args;
va_start(args, message);
std::string result = string_vprintf(message, args);
va_end(args);
return result;
}
// vim:ts=4 sts=4 sw=4 et
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