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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libc/] [stdio/] [siscanf.c] - Blame information for rev 171

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1 148 jeremybenn
/*
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 * Copyright (c) 1990 The Regents of the University of California.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms are permitted
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 * provided that the above copyright notice and this paragraph are
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 * duplicated in all such forms and that any documentation,
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 * advertising materials, and other materials related to such
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 * distribution and use acknowledge that the software was developed
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 * by the University of California, Berkeley.  The name of the
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 * University may not be used to endorse or promote products derived
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 * from this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 */
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/*
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FUNCTION
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<<siscanf>>, <<fiscanf>>, <<iscanf>>---scan and format non-floating input
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INDEX
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        iscanf
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INDEX
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        _iscanf_r
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INDEX
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        fiscanf
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INDEX
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        _fiscanf_r
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INDEX
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        siscanf
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INDEX
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        _siscanf_r
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ANSI_SYNOPSIS
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        #include <stdio.h>
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        int iscanf(const char *<[format]>, ...);
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        int fiscanf(FILE *<[fd]>, const char *<[format]>, ...);
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        int siscanf(const char *<[str]>, const char *<[format]>, ...);
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        int _iscanf_r(struct _reent *<[ptr]>, const char *<[format]>, ...);
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        int _fiscanf_r(struct _reent *<[ptr]>, FILE *<[fd]>,
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                       const char *<[format]>, ...);
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        int _siscanf_r(struct _reent *<[ptr]>, const char *<[str]>,
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                   const char *<[format]>, ...);
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TRAD_SYNOPSIS
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        #include <stdio.h>
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        int iscanf(<[format]> [, <[arg]>, ...])
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        char *<[format]>;
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        int fiscanf(<[fd]>, <[format]> [, <[arg]>, ...]);
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        FILE *<[fd]>;
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        char *<[format]>;
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        int siscanf(<[str]>, <[format]> [, <[arg]>, ...]);
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        char *<[str]>;
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        char *<[format]>;
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        int _iscanf_r(<[ptr]>, <[format]> [, <[arg]>, ...])
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        struct _reent *<[ptr]>;
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        char *<[format]>;
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        int _fiscanf_r(<[ptr]>, <[fd]>, <[format]> [, <[arg]>, ...]);
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        struct _reent *<[ptr]>;
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        FILE *<[fd]>;
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        char *<[format]>;
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        int _siscanf_r(<[ptr]>, <[str]>, <[format]> [, <[arg]>, ...]);
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        struct _reent *<[ptr]>;
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        char *<[str]>;
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        char *<[format]>;
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DESCRIPTION
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        <<iscanf>>, <<fiscanf>>, and <<siscanf>> are the same as
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        <<scanf>>, <<fscanf>>, and <<sscanf>> respectively, only that
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        they restrict the available formats to non-floating-point
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        format specifiers.
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        The routines <<_iscanf_r>>, <<_fiscanf_r>>, and <<_siscanf_r>> are reentrant
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        versions of <<iscanf>>, <<fiscanf>>, and <<siscanf>> that take an additional
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        first argument pointing to a reentrancy structure.
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RETURNS
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        <<iscanf>> returns the number of input fields successfully
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        scanned, converted and stored; the return value does
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        not include scanned fields which were not stored.
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        If <<iscanf>> attempts to read at end-of-file, the return
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        value is <<EOF>>.
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        If no fields were stored, the return value is <<0>>.
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PORTABILITY
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<<iscanf>>, <<fiscanf>>, and <<siscanf>> are newlib extensions.
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Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
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<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
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*/
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#include <_ansi.h>
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#include <reent.h>
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#include <stdio.h>
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#include <string.h>
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#ifdef _HAVE_STDC
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#include "local.h"
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/* | ARGSUSED */
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/*SUPPRESS 590*/
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static _READ_WRITE_RETURN_TYPE
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_DEFUN(eofread, (ptr, cookie, buf, len),
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       struct _reent *ptr _AND
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       _PTR cookie _AND
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       char *buf   _AND
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       int len)
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{
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  return 0;
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}
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#ifndef _REENT_ONLY 
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#ifdef _HAVE_STDC
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int
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_DEFUN(siscanf, (str, fmt),
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       _CONST char *str _AND
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       _CONST char *fmt _DOTS)
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#else
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int
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siscanf(str, fmt, va_alist)
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       _CONST char *str;
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       _CONST char *fmt;
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       va_dcl
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#endif
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{
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  int ret;
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  va_list ap;
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  FILE f;
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  f._flags = __SRD | __SSTR;
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  f._bf._base = f._p = (unsigned char *) str;
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  f._bf._size = f._r = strlen (str);
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  f._read = eofread;
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  f._ub._base = NULL;
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  f._lb._base = NULL;
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  f._file = -1;  /* No file. */
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#ifdef _HAVE_STDC
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  va_start (ap, fmt);
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#else
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  va_start (ap);
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#endif
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  ret = __ssvfiscanf_r (_REENT, &f, fmt, ap);
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  va_end (ap);
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  return ret;
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}
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#endif /* !_REENT_ONLY */
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#ifdef _HAVE_STDC
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int
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_DEFUN(_siscanf_r, (ptr, str, fmt),
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       struct _reent *ptr _AND
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       _CONST char *str   _AND
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       _CONST char *fmt _DOTS)
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#else
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int
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_siscanf_r(ptr, str, fmt, va_alist)
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          struct _reent *ptr;
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          _CONST char *str;
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          _CONST char *fmt;
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          va_dcl
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#endif
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{
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  int ret;
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  va_list ap;
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  FILE f;
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  f._flags = __SRD | __SSTR;
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  f._bf._base = f._p = (unsigned char *) str;
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  f._bf._size = f._r = strlen (str);
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  f._read = eofread;
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  f._ub._base = NULL;
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  f._lb._base = NULL;
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  f._file = -1;  /* No file. */
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#ifdef _HAVE_STDC
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  va_start (ap, fmt);
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#else
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  va_start (ap);
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#endif
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  ret = __ssvfiscanf_r (ptr, &f, fmt, ap);
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  va_end (ap);
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  return ret;
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}

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