reactos/lib/crtdll/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 #undef putwc
  11
  12 int putc(int c, FILE* fp)
  13 {
  14 // valid stream macro should check that fp is dword aligned
  15         if (!__validfp (fp)) {
  16                 __set_errno(EINVAL);
  17                 return -1;
  18         }
  19 // check for write access on fp
  20
  21         if ( !OPEN4WRITING(fp)  ) {
  22                 __set_errno(EINVAL);
  23                 return -1;
  24         }
  25
  26         fp->_flag |= _IODIRTY;
  27         if (fp->_cnt > 0 ) {
  28                 fp->_cnt--;
  29                 *(fp)->_ptr++ = (unsigned char)c;
  30                 return (int)(unsigned char)c;
  31         }
  32         else {
  33                 return _flsbuf((unsigned char)c,fp);
  34         }
  35         return EOF;
  36 }
  37
  38 //wint_t putwc(wint_t c, FILE* fp)
  39 //int putwc(wchar_t c, FILE* fp)
  40 int putwc(wint_t c, FILE* fp)
  41 {
  42         // might check on multi bytes if text mode
  43
  44         if (fp->_cnt > 0 ) {
  45                 fp->_cnt-= sizeof(wchar_t);
  46                 *((wchar_t *)(fp->_ptr))++  = c;
  47                 return (wint_t)c;
  48         }
  49         else
  50                 return  _flswbuf(c,fp);
  51
  52         return -1;
  53
  54
  55 }