reactos/lib/crtdll/stdio/putc.c

   1 /* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
   2 #include <precomp.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 /*
  13  * @implemented
  14  */
  15 int putc(int c, FILE* fp)
  16 {
  17 // valid stream macro should check that fp is dword aligned
  18         if (!__validfp (fp)) {
  19                 __set_errno(EINVAL);
  20                 return -1;
  21         }
  22 // check for write access on fp
  23
  24         if ( !OPEN4WRITING(fp)  ) {
  25                 __set_errno(EINVAL);
  26                 return -1;
  27         }
  28
  29         fp->_flag |= _IODIRTY;
  30         if (fp->_cnt > 0 ) {
  31                 fp->_cnt--;
  32                 *(fp)->_ptr++ = (unsigned char)c;
  33                 return (int)(unsigned char)c;
  34         }
  35         else {
  36                 return _flsbuf((unsigned char)c,fp);
  37         }
  38         return EOF;
  39 }
  40
  41 //wint_t putwc(wint_t c, FILE* fp)
  42 //int putwc(wchar_t c, FILE* fp)
  43 int putwc(wint_t c, FILE* fp)
  44 {
  45         // might check on multi bytes if text mode
  46
  47         if (fp->_cnt > 0 ) {
  48                 fp->_cnt-= sizeof(wchar_t);
  49                 *((wchar_t *)(fp->_ptr))  = c;
  50                 fp->_ptr += sizeof(wchar_t);
  51                 return (wint_t)c;
  52         }
  53         else
  54                 return  _flswbuf(c,fp);
  55
  56         return -1;
  57
  58
  59 }