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

189 lines
4.6 KiB
C
Raw Normal View History

/*
* 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.
*/
/*
FUNCTION
<<siscanf>>, <<fiscanf>>, <<iscanf>>---scan and format non-floating input
INDEX
iscanf
INDEX
_iscanf_r
INDEX
fiscanf
INDEX
_fiscanf_r
INDEX
siscanf
INDEX
_siscanf_r
ANSI_SYNOPSIS
#include <stdio.h>
int iscanf(const char *<[format]>, ...);
int fiscanf(FILE *<[fd]>, const char *<[format]>, ...);
int siscanf(const char *<[str]>, const char *<[format]>, ...);
int _iscanf_r(struct _reent *<[ptr]>, const char *<[format]>, ...);
int _fiscanf_r(struct _reent *<[ptr]>, FILE *<[fd]>,
const char *<[format]>, ...);
int _siscanf_r(struct _reent *<[ptr]>, const char *<[str]>,
const char *<[format]>, ...);
TRAD_SYNOPSIS
#include <stdio.h>
int iscanf(<[format]> [, <[arg]>, ...])
char *<[format]>;
int fiscanf(<[fd]>, <[format]> [, <[arg]>, ...]);
FILE *<[fd]>;
char *<[format]>;
int siscanf(<[str]>, <[format]> [, <[arg]>, ...]);
char *<[str]>;
char *<[format]>;
int _iscanf_r(<[ptr]>, <[format]> [, <[arg]>, ...])
struct _reent *<[ptr]>;
char *<[format]>;
int _fiscanf_r(<[ptr]>, <[fd]>, <[format]> [, <[arg]>, ...]);
struct _reent *<[ptr]>;
FILE *<[fd]>;
char *<[format]>;
int _siscanf_r(<[ptr]>, <[str]>, <[format]> [, <[arg]>, ...]);
struct _reent *<[ptr]>;
char *<[str]>;
char *<[format]>;
DESCRIPTION
<<iscanf>>, <<fiscanf>>, and <<siscanf>> are the same as
<<scanf>>, <<fscanf>>, and <<sscanf>> respectively, only that
they restrict the available formats to non-floating-point
format specifiers.
The routines <<_iscanf_r>>, <<_fiscanf_r>>, and <<_siscanf_r>> are reentrant
versions of <<iscanf>>, <<fiscanf>>, and <<siscanf>> that take an additional
first argument pointing to a reentrancy structure.
RETURNS
<<iscanf>> returns the number of input fields successfully
scanned, converted and stored; the return value does
not include scanned fields which were not stored.
If <<iscanf>> attempts to read at end-of-file, the return
value is <<EOF>>.
If no fields were stored, the return value is <<0>>.
PORTABILITY
<<iscanf>>, <<fiscanf>>, and <<siscanf>> are newlib extensions.
Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
*/
#include <_ansi.h>
#include <reent.h>
#include <stdio.h>
#include <string.h>
#ifdef _HAVE_STDC
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include "local.h"
#ifndef _REENT_ONLY
#ifdef _HAVE_STDC
int
_DEFUN(siscanf, (str, fmt),
_CONST char *str _AND
_CONST char *fmt _DOTS)
#else
int
siscanf(str, fmt, va_alist)
_CONST char *str;
_CONST char *fmt;
va_dcl
#endif
{
int ret;
va_list ap;
FILE f;
f._flags = __SRD | __SSTR;
f._bf._base = f._p = (unsigned char *) str;
f._bf._size = f._r = strlen (str);
f._read = __seofread;
f._ub._base = NULL;
f._lb._base = NULL;
f._file = -1; /* No file. */
#ifdef _HAVE_STDC
va_start (ap, fmt);
#else
va_start (ap);
#endif
2008-04-14 Jeff Johnston <jjohnstn@redhat.com> * libc/stdio/Makefile.am: Build vfprintf.c and vfscanf.c with -DSTRING_ONLY defined with and without -DINTEGER_ONLY defined to build special versions for sprintf/sscanf family functions. * libc/stdio/Makefile.in: Regenerated. * libc/stdio/vfprintf.c[STRING_ONLY][INTEGER_ONLY](_VFPRINTF_R): Redefine to be _svfiprintf_r which is optimized to work with siprintf family of functions (i.e. no I/O) and does not support floating-point. [STRING_ONLY][!INTEGER_ONLY](_VFPRINTF_R): Redefine to be _svfprintf_r which is optimized to work with sprintf family of functions and not use I/O. [STRING_ONLY](__sprint_r): New string only version of static function. designed to work with sprintf family of functions. * libc/stdio/vfscanf.c[STRING_ONLY][INTEGER_ONLY](_SVFSCANF_R): Redefine to be _ssvfiscanf_r which is optimized to work with siscanf family of functions (i.e. no I/O) and no float-point support. [STRING_ONLY][!INTEGER_ONLY](_SVFSCANF_R): Redefine to be __ssvfscanf_r which is optimized to work with sscanf family of functions and does not require I/O functions. * libc/stdio/asprintf.c: Call _svfprintf_r instead of _vfprintf_r. * libc/stdio/snprintf.c: Ditto. * libc/stdio/sprintf.c: Ditto. * libc/stdio/vasnprintf.c: Ditto. * libc/stdio/vasprintf.c: Ditto. * libc/stdio/siprintf.c: Call _svfiprintf_r instead of _vfiprintf_r. * libc/stdio/sniprintf.c: Ditto. * libc/stdio/vasiprintf.c: Ditto. * libc/stdio/vsiprintf.c: Ditto. * libc/stdio/vsniprintf.c: Ditto. * libc/stdio/vsprintf.c: Ditto. * libc/stdio/local.h: Add prototypes for _svfprintf_r, _svfiprintf_r, _ssvfscanf_r, and _ssvfiscanf_r. * libc/stdio/sscanf.c: Call _ssvfscanf_r instead of _svfscanf_r. * libc/stdio/vsscanf.c: Ditto. * libc/stdio/siscanf.c: Call _ssvfiscanf_r instead of _svfiscanf_r. * libc/stdio/vsiscanf.c: Ditto.
2008-04-15 05:14:55 +08:00
ret = __ssvfiscanf_r (_REENT, &f, fmt, ap);
va_end (ap);
return ret;
}
#endif /* !_REENT_ONLY */
#ifdef _HAVE_STDC
int
_DEFUN(_siscanf_r, (ptr, str, fmt),
struct _reent *ptr _AND
_CONST char *str _AND
_CONST char *fmt _DOTS)
#else
int
_siscanf_r(ptr, str, fmt, va_alist)
struct _reent *ptr;
_CONST char *str;
_CONST char *fmt;
va_dcl
#endif
{
int ret;
va_list ap;
FILE f;
f._flags = __SRD | __SSTR;
f._bf._base = f._p = (unsigned char *) str;
f._bf._size = f._r = strlen (str);
f._read = __seofread;
f._ub._base = NULL;
f._lb._base = NULL;
f._file = -1; /* No file. */
#ifdef _HAVE_STDC
va_start (ap, fmt);
#else
va_start (ap);
#endif
2008-04-14 Jeff Johnston <jjohnstn@redhat.com> * libc/stdio/Makefile.am: Build vfprintf.c and vfscanf.c with -DSTRING_ONLY defined with and without -DINTEGER_ONLY defined to build special versions for sprintf/sscanf family functions. * libc/stdio/Makefile.in: Regenerated. * libc/stdio/vfprintf.c[STRING_ONLY][INTEGER_ONLY](_VFPRINTF_R): Redefine to be _svfiprintf_r which is optimized to work with siprintf family of functions (i.e. no I/O) and does not support floating-point. [STRING_ONLY][!INTEGER_ONLY](_VFPRINTF_R): Redefine to be _svfprintf_r which is optimized to work with sprintf family of functions and not use I/O. [STRING_ONLY](__sprint_r): New string only version of static function. designed to work with sprintf family of functions. * libc/stdio/vfscanf.c[STRING_ONLY][INTEGER_ONLY](_SVFSCANF_R): Redefine to be _ssvfiscanf_r which is optimized to work with siscanf family of functions (i.e. no I/O) and no float-point support. [STRING_ONLY][!INTEGER_ONLY](_SVFSCANF_R): Redefine to be __ssvfscanf_r which is optimized to work with sscanf family of functions and does not require I/O functions. * libc/stdio/asprintf.c: Call _svfprintf_r instead of _vfprintf_r. * libc/stdio/snprintf.c: Ditto. * libc/stdio/sprintf.c: Ditto. * libc/stdio/vasnprintf.c: Ditto. * libc/stdio/vasprintf.c: Ditto. * libc/stdio/siprintf.c: Call _svfiprintf_r instead of _vfiprintf_r. * libc/stdio/sniprintf.c: Ditto. * libc/stdio/vasiprintf.c: Ditto. * libc/stdio/vsiprintf.c: Ditto. * libc/stdio/vsniprintf.c: Ditto. * libc/stdio/vsprintf.c: Ditto. * libc/stdio/local.h: Add prototypes for _svfprintf_r, _svfiprintf_r, _ssvfscanf_r, and _ssvfiscanf_r. * libc/stdio/sscanf.c: Call _ssvfscanf_r instead of _svfscanf_r. * libc/stdio/vsscanf.c: Ditto. * libc/stdio/siscanf.c: Call _ssvfiscanf_r instead of _svfiscanf_r. * libc/stdio/vsiscanf.c: Ditto.
2008-04-15 05:14:55 +08:00
ret = __ssvfiscanf_r (ptr, &f, fmt, ap);
va_end (ap);
return ret;
}