/*
 * COPYRIGHT:   See COPYING in the top level directory
 * PROJECT:     ReactOS system libraries
 * FILE:        lib/msvcrt/io/write.c
 * PURPOSE:     Writes to a file
 * PROGRAMER:   Boudewijn Dekker
 * UPDATE HISTORY:
 *              28/12/98: Created
 */
#include <windows.h>
#include <msvcrt/io.h>
#include <msvcrt/internal/file.h>

#define NDEBUG
#include <msvcrt/msvcrtdbg.h>

#define BUFSIZE	4096

size_t _write(int _fd, const void *_buf, size_t _nbyte)
{
   char *tmp, *in, *out;
   int count, result;
   DWORD wbyte;

   DPRINT("_write(fd %d, buf %x, nbyte %d)\n", _fd, _buf, _nbyte);
   if (__fileno_getmode(_fd) & O_TEXT)
   {
      result = _nbyte; 
      tmp = (char*) malloc(BUFSIZE);
      if (tmp == NULL)
      {
	 return -1;
      }
      count = BUFSIZE;
      out = tmp;
      in = (char*) _buf;
      while (_nbyte--)
      {
         if (*in == 0x0a)
	 {
	    *out++ = 0x0d;
	    count--;
	    if (count == 0)
	    {
	       	if (!WriteFile(_get_osfhandle(_fd), tmp, BUFSIZE, &wbyte, NULL))
		{
		   result = -1;
		   break;
		}
		if (wbyte < BUFSIZE)
		{
		   result = in - (char*)_buf;
		   break;
		}
		count = BUFSIZE;
		out = tmp;
	    }
	 }
	 *out++ = *in++;
	 count--;
	 if (count == 0 || _nbyte == 0)
	 {
	    if (!WriteFile(_get_osfhandle(_fd), tmp, BUFSIZE - count, &wbyte, NULL))
	    {
		result = -1; 
		break;
	    }
	    if (wbyte < BUFSIZE - count)
	    {
		result = in - (char*)_buf;
		break;
	    }
	    count = BUFSIZE;
	    out = tmp;
	 }
      }
      free(tmp);
      return result;
   }
   else
   {
      if(!WriteFile(_get_osfhandle(_fd), _buf, _nbyte, &wbyte, NULL))
      {
	  return -1;
      }
      return wbyte;
   }
}