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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [stdio/] [viscanf.c] - Rev 207
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/*- * Code created by modifying iscanf.c which has following copyright. * * 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 <<viscanf>>, <<vfiscanf>>, <<vsiscanf>>---format argument list INDEX viscanf INDEX _viscanf_r INDEX vfiscanf INDEX _vfiscanf_r INDEX vsiscanf INDEX _vsiscanf_r ANSI_SYNOPSIS #include <stdio.h> #include <stdarg.h> int viscanf(const char *<[fmt]>, va_list <[list]>); int vfiscanf(FILE *<[fp]>, const char *<[fmt]>, va_list <[list]>); int vsiscanf(const char *<[str]>, const char *<[fmt]>, va_list <[list]>); int _viscanf_r(struct _reent *<[reent]>, const char *<[fmt]>, va_list <[list]>); int _vfiscanf_r(struct _reent *<[reent]>, FILE *<[fp]>, const char *<[fmt]>, va_list <[list]>); int _vsiscanf_r(struct _reent *<[reent]>, const char *<[str]>, const char *<[fmt]>, va_list <[list]>); TRAD_SYNOPSIS #include <stdio.h> #include <varargs.h> int viscanf( <[fmt]>, <[ist]>) char *<[fmt]>; va_list <[list]>; int vfiscanf( <[fp]>, <[fmt]>, <[list]>) FILE *<[fp]>; char *<[fmt]>; va_list <[list]>; int vsiscanf( <[str]>, <[fmt]>, <[list]>) char *<[str]>; char *<[fmt]>; va_list <[list]>; int _viscanf_r( <[reent]>, <[fmt]>, <[ist]>) struct _reent *<[reent]>; char *<[fmt]>; va_list <[list]>; int _vfiscanf_r( <[reent]>, <[fp]>, <[fmt]>, <[list]>) struct _reent *<[reent]>; FILE *<[fp]>; char *<[fmt]>; va_list <[list]>; int _vsiscanf_r( <[reent]>, <[str]>, <[fmt]>, <[list]>) struct _reent *<[reent]>; char *<[str]>; char *<[fmt]>; va_list <[list]>; DESCRIPTION <<viscanf>>, <<vfiscanf>>, and <<vsiscanf>> are (respectively) variants of <<iscanf>>, <<fiscanf>>, and <<siscanf>>. They differ only in allowing their caller to pass the variable argument list as a <<va_list>> object (initialized by <<va_start>>) rather than directly accepting a variable number of arguments. RETURNS The return values are consistent with the corresponding functions: <<viscanf>> returns the number of input fields successfully scanned, converted, and stored; the return value does not include scanned fields which were not stored. If <<viscanf>> attempts to read at end-of-file, the return value is <<EOF>>. If no fields were stored, the return value is <<0>>. The routines <<_viscanf_r>>, <<_vfiscanf_f>>, and <<_vsiscanf_r>> are reentrant versions which take an additional first parameter which points to the reentrancy structure. PORTABILITY These are newlib extensions. Supporting OS subroutines required: */ #include <_ansi.h> #include <reent.h> #include <stdio.h> #ifdef _HAVE_STDC #include <stdarg.h> #else #include <varargs.h> #endif #include "local.h" #ifndef _REENT_ONLY int _DEFUN(viscanf, (fmt, ap), _CONST char *fmt _AND va_list ap) { _REENT_SMALL_CHECK_INIT (_REENT); return __svfiscanf_r (_REENT, _stdin_r (_REENT), fmt, ap); } #endif /* !_REENT_ONLY */ int _DEFUN(_viscanf_r, (ptr, fmt, ap), struct _reent *ptr _AND _CONST char *fmt _AND va_list ap) { _REENT_SMALL_CHECK_INIT (ptr); return __svfiscanf_r (ptr, _stdin_r (ptr), fmt, ap); }