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_write(): Don't fragment WriteFile() for TEXT mode write.

This commit is contained in:
Uwe Bonnes 2003-10-07 04:01:28 +00:00 committed by Alexandre Julliard
parent 5d9422b09f
commit 16fa009085
1 changed files with 54 additions and 29 deletions
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83
dlls/msvcrt/file.c
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@ -1525,36 +1525,61 @@ int _write(int fd, const void* buf, unsigned int count)
}
}
else
{
{
unsigned int i, j, nr_lf;
char *s=(char*)buf, *buf_start=(char*)buf, *p;
char crlf[]= {'\r','\n'};
unsigned int i;
DWORD num_to_write;
for (i = 0; i< count && !(MSVCRT_flags[fd] & MSVCRT__IOERR);i++, s++)
{
if (*s == '\n')
{
p = crlf;
num_to_write = 2;
}
else
{
p = s;
num_to_write = 1;
}
if ((WriteFile(hand, p, num_to_write, &num_written, NULL) == 0 ) || (num_written != num_to_write))
{
TRACE(":failed-last error (%ld) num_written %ld\n",GetLastError(),num_written);
if (MSVCRT_files[fd])
{
MSVCRT_files[fd]->_flag |= MSVCRT__IOERR;
*MSVCRT__errno() = MSVCRT_ENOSPC;
return s - buf_start;
}
}
}
return s - buf_start;
}
/* find number of \n ( without preceeding \r */
for ( nr_lf=0,i = 0; i <count; i++)
{
if (s[i]== '\n')
{
nr_lf++;
/*if ((i >1) && (s[i-1] == '\r')) nr_lf--; */
}
}
if (nr_lf)
{
if ((p = MSVCRT_malloc(count + nr_lf)))
{
for(s=(char*)buf, i=0, j=0; i<count; i++)
{
if (s[i]== '\n')
{
p[j++] = '\r';
/*if ((i >1) && (s[i-1] == '\r'))j--;*/
}
p[j++] = s[i];
}
}
else
{
FIXME("Malloc failed\n");
nr_lf =0;
p = (char*)buf;
}
}
else
p = (char*)buf;
if ((WriteFile(hand, p, count+nr_lf, &num_written, NULL) == 0 ) || (num_written != count+nr_lf))
{
TRACE(":failed-last error (%ld) num_written %ld\n",GetLastError(),num_written);
if (MSVCRT_files[fd])
{
MSVCRT_files[fd]->_flag |= MSVCRT__IOERR;
*MSVCRT__errno() = MSVCRT_ENOSPC;
if(nr_lf)
MSVCRT_free(p);
return s - buf_start;
}
}
else
{
if(nr_lf)
MSVCRT_free(p);
return count;
}
}
return -1;
}