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cc65/src/common/xsprintf.h
2022-04-17 16:07:09 +02:00

91 lines
4.2 KiB
C

/*****************************************************************************/
/* */
/* xsprintf.h */
/* */
/* Replacement sprintf function */
/* */
/* */
/* */
/* (C) 2000-2008 Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
/* We need a way to output a StrBuf, but on the other side, we don't want to
** switch off gcc's printf format string checking. So we cheat as follows:
** %m (which is a gcc extension and doesn't take an argument) switches %p
** between outputting a pointer and a string buf. This works just one time,
** so each StrBuf needs in fact a %m%p spec. There's no way to apply a width
** and precision to such a StrBuf, but *not* using %p would bring up a warning
** about a wrong argument type each time. Maybe gcc will one day allow custom
** format specifiers and we can change this ...
*/
#ifndef XSPRINTF_H
#define XSPRINTF_H
#include <stdlib.h>
#include <stdarg.h>
#include "attrib.h"
/*****************************************************************************/
/* Code */
/*****************************************************************************/
int xvsnprintf (char* Buf, size_t Size, const char* Format, va_list ap)
attribute ((format (printf, 3, 0)));
/* A basic vsnprintf implementation. Does currently only support integer
** formats.
*/
int xsnprintf (char* Buf, size_t Size, const char* Format, ...)
attribute ((format (printf, 3, 4)));
/* A basic snprintf implementation. Does currently only support integer
** formats.
*/
int xsprintf (char* Buf, size_t BufSize, const char* Format, ...)
attribute ((format (printf, 3, 4)));
/* Replacement function for sprintf. Will FAIL on errors. */
int xvsprintf (char* Buf, size_t BufSize, const char* Format, va_list ap)
attribute ((format (printf, 3, 0)));
/* Replacement function for sprintf. Will FAIL on errors. */
/* End of xsprintf.h */
#endif