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  1. /****************************************************************************
  2. *
  3. *                            Open Watcom Project
  4. *
  5. *    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
  6. *
  7. *  ========================================================================
  8. *
  9. *    This file contains Original Code and/or Modifications of Original
  10. *    Code as defined in and that are subject to the Sybase Open Watcom
  11. *    Public License version 1.0 (the 'License'). You may not use this file
  12. *    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
  13. *    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
  14. *    provided with the Original Code and Modifications, and is also
  15. *    available at www.sybase.com/developer/opensource.
  16. *
  17. *    The Original Code and all software distributed under the License are
  18. *    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  19. *    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
  20. *    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
  21. *    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
  22. *    NON-INFRINGEMENT. Please see the License for the specific language
  23. *    governing rights and limitations under the License.
  24. *
  25. *  ========================================================================
  26. *
  27. * Description:  Implementation of fgets() - read string from stream.
  28. *
  29. ****************************************************************************/
  30.  
  31.  
  32. #include "variety.h"
  33. #include "widechar.h"
  34. #include <stdio.h>
  35. #include "fileacc.h"
  36.  
  37.  
  38. _WCRTLINK CHAR_TYPE *__F_NAME(fgets,fgetws)( CHAR_TYPE *s, int n, FILE *fp )
  39. {
  40.     INTCHAR_TYPE    c;
  41.     CHAR_TYPE       *cs;
  42.     unsigned        oflag;
  43.  
  44.     _ValidFile( fp, 0 );
  45.     _AccessFile( fp );
  46.  
  47.     oflag = fp->_flag & (_SFERR | _EOF);                /* 06-sep-91 */
  48.     fp->_flag &= ~(_SFERR | _EOF);
  49.     cs = s;
  50.  
  51.     /* don't use macro version of getc: multi-threading issues */
  52.     while( (--n > 0) && (c = __F_NAME(fgetc,fgetwc)( fp )) != __F_NAME(EOF,WEOF) ) {
  53.         if( (*cs++ = c) == __F_NAME('\n',L'\n') )
  54.             break;
  55.     }
  56.  
  57.     if( c == __F_NAME(EOF,WEOF)  &&  (cs == s || ferror( fp )) ) {
  58.         s = NULL;
  59.     } else {
  60.         *cs = NULLCHAR;
  61.     }
  62.     fp->_flag |= oflag;                                 /* 06-sep-91 */
  63.     _ReleaseFile( fp );
  64.     return( s );
  65. }
  66.