mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-16 20:02:35 +03:00
109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
/*
|
|
* 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
|
|
<<fgetc>>---get a character from a file or stream
|
|
|
|
INDEX
|
|
fgetc
|
|
INDEX
|
|
_fgetc_r
|
|
|
|
ANSI_SYNOPSIS
|
|
#include <stdio.h>
|
|
int fgetc(FILE *<[fp]>);
|
|
|
|
#include <stdio.h>
|
|
int _fgetc_r(struct _reent *<[ptr]>, FILE *<[fp]>);
|
|
|
|
TRAD_SYNOPSIS
|
|
#include <stdio.h>
|
|
int fgetc(<[fp]>)
|
|
FILE *<[fp]>;
|
|
|
|
#include <stdio.h>
|
|
int _fgetc_r(<[ptr]>, <[fp]>)
|
|
struct _reent *<[ptr]>;
|
|
FILE *<[fp]>;
|
|
|
|
DESCRIPTION
|
|
Use <<fgetc>> to get the next single character from the file or stream
|
|
identified by <[fp]>. As a side effect, <<fgetc>> advances the file's
|
|
current position indicator.
|
|
|
|
For a macro version of this function, see <<getc>>.
|
|
|
|
The function <<_fgetc_r>> is simply a reentrant version of
|
|
<<fgetc>> that is passed the additional reentrant structure
|
|
pointer argument: <[ptr]>.
|
|
|
|
RETURNS
|
|
The next character (read as an <<unsigned char>>, and cast to
|
|
<<int>>), unless there is no more data, or the host system reports a
|
|
read error; in either of these situations, <<fgetc>> returns <<EOF>>.
|
|
|
|
You can distinguish the two situations that cause an <<EOF>> result by
|
|
using the <<ferror>> and <<feof>> functions.
|
|
|
|
PORTABILITY
|
|
ANSI C requires <<fgetc>>.
|
|
|
|
Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
|
|
<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
|
|
*/
|
|
|
|
#include <_ansi.h>
|
|
#include <stdio.h>
|
|
#include "local.h"
|
|
|
|
int
|
|
_DEFUN(_fgetc_r, (ptr, fp),
|
|
struct _reent * ptr _AND
|
|
FILE * fp)
|
|
{
|
|
int result;
|
|
CHECK_INIT(ptr, fp);
|
|
_newlib_flockfile_start (fp);
|
|
result = __sgetc_r (ptr, fp);
|
|
_newlib_flockfile_end (fp);
|
|
return result;
|
|
}
|
|
|
|
#ifndef _REENT_ONLY
|
|
|
|
int
|
|
_DEFUN(fgetc, (fp),
|
|
FILE * fp)
|
|
{
|
|
#if !defined(PREFER_SIZE_OVER_SPEED) && !defined(__OPTIMIZE_SIZE__)
|
|
int result;
|
|
struct _reent *reent = _REENT;
|
|
|
|
CHECK_INIT(reent, fp);
|
|
_newlib_flockfile_start (fp);
|
|
result = __sgetc_r (reent, fp);
|
|
_newlib_flockfile_end (fp);
|
|
return result;
|
|
#else
|
|
return _fgetc_r (_REENT, fp);
|
|
#endif
|
|
}
|
|
|
|
#endif /* !_REENT_ONLY */
|
|
|