196 lines
4.8 KiB
C
196 lines
4.8 KiB
C
/*
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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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<<iscanf>>, <<fiscanf>>, <<siscanf>>---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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fiscanf
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INDEX
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siscanf
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ANSI_SYNOPSIS
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#include <stdio.h>
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int iscanf(const char *<[format]> [, <[arg]>, ...]);
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int fiscanf(FILE *<[fd]>, const char *<[format]> [, <[arg]>, ...]);
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int siscanf(const char *<[str]>, const char *<[format]>
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[, <[arg]>, ...]);
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int _iscanf_r(struct _reent *<[ptr]>, const char *<[format]>
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[, <[arg]>, ...]);
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int _fiscanf_r(struct _reent *<[ptr]>, FILE *<[fd]>, const char *<[format]>
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[, <[arg]>, ...]);
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int _siscanf_r(struct _reent *<[ptr]>, const char *<[str]>,
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const char *<[format]> [, <[arg]>, ...]);
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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, (cookie, buf, len),
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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 = __svfiscanf_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 = __svfiscanf_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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