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kolibrios/programs/develop/open watcom/trunk/clib/streamio/fgets.c
Sergey Semyonov (Serge) 3be3768ce0 update CLib
git-svn-id: svn://kolibrios.org@614 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-08-28 10:31:46 +00:00

66 lines
2.3 KiB
C

/****************************************************************************
*
* Open Watcom Project
*
* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
* ========================================================================
*
* This file contains Original Code and/or Modifications of Original
* Code as defined in and that are subject to the Sybase Open Watcom
* Public License version 1.0 (the 'License'). You may not use this file
* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
* provided with the Original Code and Modifications, and is also
* available at www.sybase.com/developer/opensource.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
* NON-INFRINGEMENT. Please see the License for the specific language
* governing rights and limitations under the License.
*
* ========================================================================
*
* Description: Implementation of fgets() - read string from stream.
*
****************************************************************************/
#include "variety.h"
#include "widechar.h"
#include <stdio.h>
#include "fileacc.h"
_WCRTLINK CHAR_TYPE *__F_NAME(fgets,fgetws)( CHAR_TYPE *s, int n, FILE *fp )
{
INTCHAR_TYPE c;
CHAR_TYPE *cs;
unsigned oflag;
_ValidFile( fp, 0 );
_AccessFile( fp );
oflag = fp->_flag & (_SFERR | _EOF); /* 06-sep-91 */
fp->_flag &= ~(_SFERR | _EOF);
cs = s;
/* don't use macro version of getc: multi-threading issues */
while( (--n > 0) && (c = __F_NAME(fgetc,fgetwc)( fp )) != __F_NAME(EOF,WEOF) ) {
if( (*cs++ = c) == __F_NAME('\n',L'\n') )
break;
}
if( c == __F_NAME(EOF,WEOF) && (cs == s || ferror( fp )) ) {
s = NULL;
} else {
*cs = NULLCHAR;
}
fp->_flag |= oflag; /* 06-sep-91 */
_ReleaseFile( fp );
return( s );
}