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/*
This file is part of Warzone 2100.
Copyright (C) 1992-2007 Trolltech ASA.
Copyright (C) 2005-2020 Warzone 2100 Project
Warzone 2100 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
Warzone 2100 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.
You should have received a copy of the GNU General Public License
along with Warzone 2100; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "frame.h"
#include "stdio_ext.h"
#include <stdio.h>
#include <string.h>
#include <assert.h>
#if defined(WZ_CC_MSVC)
int vslcatprintf(char *str, size_t size, const char *format, va_list ap)
{
size_t str_len;
if (!str || size == 0)
{
return vsnprintf(NULL, 0, format, ap);
}
str_len = strlen(str);
assert(str_len < size);
return vsnprintf(&str[str_len], size - str_len, format, ap);
}
int slcatprintf(char *str, size_t size, const char *format, ...)
{
va_list ap;
int count;
va_start(ap, format);
count = vslcatprintf(str, size, format, ap);
va_end(ap);
return count;
}
int vasprintf(char **strp, const char *format, va_list ap)
{
int count;
va_list aq;
va_copy(aq, ap);
// Find out how long the resulting string is
count = vsnprintf(NULL, 0, format, aq);
va_end(aq);
if (count == 0)
{
*strp = strdup("");
return 0;
}
else if (count < 0)
{
// Something went wrong, so return the error code (probably still requires checking of "errno" though)
return -1;
}
assert(strp != NULL);
// Allocate memory for our string
*strp = (char *)malloc(count + 1);
// Do the actual printing into our newly created string
return vsprintf(*strp, format, ap);
}
int asprintf(char **strp, const char *format, ...)
{
va_list ap;
int count;
va_start(ap, format);
count = vasprintf(strp, format, ap);
va_end(ap);
return count;
}
#endif
#if defined(WZ_CC_MSVC)
int wz_vsnprintf(char *str, size_t size, const char *format, va_list ap)
{
int count;
va_list aq;
va_copy(aq, ap);
// Find out how long the resulting string is
count = _vscprintf(format, aq);
va_end(aq);
if (count && str)
{
// Perfrom the actual string formatting
_vsnprintf_s(str, size, _TRUNCATE, format, ap);
}
// Return the amount of characters that would be written if _no_ truncation occurred
return count;
}
int wz_snprintf(char *str, size_t size, const char *format, ...)
{
va_list ap;
int count;
va_start(ap, format);
count = vsnprintf(str, size, format, ap);
va_end(ap);
return count;
}
#endif
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