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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 fscanf() - formatted stream input.
  28. *
  29. ****************************************************************************/
  30.  
  31.  
  32. #include "variety.h"
  33. #include "widechar.h"
  34. #include <stdio.h>
  35. #include <stdarg.h>
  36. #include "rtdata.h"
  37. #include "scanf.h"
  38. #include "fileacc.h"
  39. #include "orient.h"
  40.  
  41.  
  42. static int cget_file( PTR_SCNF_SPECS specs )
  43. {
  44.     int     c;
  45.  
  46.     if( (c = __F_NAME(getc,getwc)( (FILE *)specs->ptr )) == __F_NAME(EOF,WEOF) ) {
  47.         specs->eoinp = 1;
  48.     }
  49.     return( c );
  50. }
  51.  
  52.  
  53. static void uncget_file( int c, PTR_SCNF_SPECS specs )
  54. {
  55.     __F_NAME(ungetc,ungetwc)( c, (FILE *)specs->ptr );
  56. }
  57.  
  58.  
  59. _WCRTLINK int __F_NAME(vfscanf,vfwscanf)( FILE *io, const CHAR_TYPE *format, va_list args )
  60. {
  61.     int         rc;
  62.     SCNF_SPECS  specs;
  63.  
  64.     _AccessFile( io );
  65.  
  66.     /*** Deal with stream orientation ***/
  67.     ORIENT_STREAM(io,0);
  68.  
  69.     specs.ptr = (CHAR_TYPE *)io;
  70.     specs.cget_rtn = cget_file;
  71.     specs.uncget_rtn = uncget_file;
  72.     rc = __F_NAME(__scnf,__wscnf)( (PTR_SCNF_SPECS)&specs, format, args );
  73.     _ReleaseFile( io );
  74.     return( rc );
  75. }
  76.  
  77.  
  78. _WCRTLINK int __F_NAME(fscanf,fwscanf)( FILE *io, const CHAR_TYPE *format, ... )
  79. {
  80.     va_list     args;
  81.  
  82.     va_start( args, format );
  83.     return( __F_NAME(vfscanf,vfwscanf)( io, format, args ) );
  84. }
  85.