newlib-cygwin/newlib/libc/stdio/asiprintf.c

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/*
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
/* This code was copied from asprintf.c */
Add support for asnprintf, and improve *printf documentation. * libc/stdio/Makefile.am (ELIX_SOURCES): Rename... (ELIX_2_SOURCES): ...to this. (ELIX_4_SOURCES): Add new variable. Build asnprintf. (GENERAL_SOURCES): Move dprintf to ELIX_4_SOURCES. (CHEWOUT_FILES): Include diprintf in documentation. * libc/stdio/Makefile.in: Regenerate. * libc/stdio/diprintf.c: Improve documentation. * libc/stdio/dprintf.c: Likewise. * libc/stdio/siprintf.c: Likewise. * libc/stdio/sprintf.c: Likewise. * libc/stdio/vfprintf.c: Likewise. * libc/stdio/viprintf.c: Likewise. * libc/stdio/vsniprintf.c: Consolidate documentation. * libc/stdio/asiprintf.c: Refer to documentation. * libc/stdio/asprintf.c: Likewise. * libc/stdio/fiprintf.c: Likewise. * libc/stdio/fprintf.c: Likewise. * libc/stdio/iprintf.c: Likewise. * libc/stdio/printf.c: Likewise. * libc/stdio/sniprintf.c: Likewise. * libc/stdio/vdiprintf.c: Likewise. * libc/stdio/vdprintf.c: Likewise. * libc/stdio/vsiprintf.c: Likewise. * libc/stdio/fvwrite.c (__sfvwrite_r): Handle asnprintf. * libc/stdio/asniprintf.c (asniprintf, _asniprintf_r): New file. * libc/stdio/asnprintf.c (asnprintf, _asnprintf_r): New file. * libc/stdio/vasniprintf.c (vasniprintf, _vasniprintf_r): New file. * libc/stdio/vasnprintf.c (vasnprintf, _vasnprintf_r): New file. * libc/stdio/vdprintf.c (_vdprintf_r): Rewrite to avoid malloc in typical case. * libc/stdio/vdiprintf.c (_vdiprintf_r): Likewise. * libc/include/stdio.h: Add prototypes for new functions; sort existing functions.
2007-05-04 10:55:16 +08:00
/* doc in siprintf.c */
#include <_ansi.h>
#include <reent.h>
#include <stdio.h>
#include <stdarg.h>
#include <limits.h>
#include "local.h"
int
_DEFUN(_asiprintf_r, (ptr, strp, fmt),
struct _reent *ptr _AND
char **strp _AND
const char *fmt _DOTS)
{
int ret;
va_list ap;
FILE f;
/* mark a zero-length reallocatable buffer */
f._flags = __SWR | __SSTR | __SMBF;
f._bf._base = f._p = NULL;
f._bf._size = f._w = 0;
f._file = -1; /* No file. */
va_start (ap, fmt);
ret = _svfiprintf_r (ptr, &f, fmt, ap);
va_end (ap);
if (ret >= 0)
{
*f._p = 0;
*strp = f._bf._base;
}
return (ret);
}
#ifndef _REENT_ONLY
int
_DEFUN(asiprintf, (strp, fmt),
char **strp _AND
const char *fmt _DOTS)
{
int ret;
va_list ap;
FILE f;
/* mark a zero-length reallocatable buffer */
f._flags = __SWR | __SSTR | __SMBF;
f._bf._base = f._p = NULL;
f._bf._size = f._w = 0;
f._file = -1; /* No file. */
va_start (ap, fmt);
ret = _svfiprintf_r (_REENT, &f, fmt, ap);
va_end (ap);
if (ret >= 0)
{
*f._p = 0;
*strp = f._bf._base;
}
return (ret);
}
#endif /* ! _REENT_ONLY */