Subversion Repositories openrisc_2011-10-31

/*

 * 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"

/* | ARGSUSED */

/*SUPPRESS 590*/

static _READ_WRITE_RETURN_TYPE

_DEFUN(eofread, (ptr, cookie, buf, len),

       struct _reent *ptr _AND

       _PTR cookie _AND

       char *buf   _AND

       int len)

{

  return 0;

}

#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 = eofread;

  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

  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 = eofread;

  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

  ret = __ssvfiscanf_r (ptr, &f, fmt, ap);

  va_end (ap);

  return ret;

}