reactos/lib/msvcrt/stdio/putc.c

   1 /* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
   2 #include <windows.h>
   3 #include <msvcrt/stdio.h>
   4 #include <msvcrt/wchar.h>
   5 #include <msvcrt/errno.h>
   6 #include <msvcrt/internal/file.h>
   7
   8 // putc can be a macro
   9 #undef putc
  10
  11 int putc(int c, FILE *fp)
  12 {
  13
  14 // valid stream macro should check that fp
  15 // is dword aligned
  16         if (!__validfp (fp)) {
  17                 __set_errno(EINVAL);
  18                 return -1;
  19         }
  20 // check for write access on fp
  21
  22         if ( !OPEN4WRITING(fp)  ) {
  23                 __set_errno(EINVAL);
  24                 return -1;
  25         }
  26
  27         fp->_flag |= _IODIRTY;
  28         if (fp->_cnt > 0 ) {
  29                 fp->_cnt--;
  30                 *(fp)->_ptr++ = (unsigned char)c;
  31                 return (int)(unsigned char)c;
  32         }
  33         else {
  34                 return _flsbuf((unsigned char)c,fp);
  35         }
  36         return EOF;
  37 }
  38
  39 wint_t putwc(wint_t c, FILE *fp)
  40 {
  41 // valid stream macro should check that fp
  42 // is dword aligned
  43         if (!__validfp (fp)) {
  44                 __set_errno(EINVAL);
  45                 return -1;
  46         }
  47 // check for write access on fp
  48
  49         if ( !OPEN4WRITING(fp)  ) {
  50                 __set_errno(EINVAL);
  51                 return -1;
  52         }
  53         // might check on multi bytes if text mode
  54
  55         fp->_flag |= _IODIRTY;
  56
  57         if (fp->_cnt > 0 ) {
  58                 fp->_cnt-= sizeof(wchar_t);
  59                 *((wchar_t *)(fp->_ptr))++  = c;
  60                 return (wint_t)c;
  61         }
  62         else
  63                 return  _flswbuf(c,fp);
  64
  65         return -1;
  66
  67
  68 }