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* Update fwrite().
* Fixes some msvcrt:file tests.
CORE-8540

svn path=/trunk/; revision=64738
This commit is contained in:
Amine Khaldi 2014-10-13 19:48:08 +00:00
parent 0c4ba28402
commit 628b200fa4
1 changed files with 29 additions and 11 deletions
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40
reactos/lib/sdk/crt/stdio/file.c
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@ -2972,28 +2972,46 @@ size_t CDECL fwrite(const void *ptr, size_t size, size_t nmemb, FILE* file)
_lock_file(file);
while(wrcnt) {
#ifndef __REACTOS__
if(file->_cnt < 0) {
WARN("negative file->_cnt value in %p\n", file);
file->_flag |= MSVCRT__IOERR;
break;
} else
#endif
if(file->_cnt) {
int pcnt=((unsigned)file->_cnt>wrcnt)? wrcnt: file->_cnt;
int pcnt=(file->_cnt>wrcnt)? wrcnt: file->_cnt;
memcpy(file->_ptr, ptr, pcnt);
file->_cnt -= pcnt;
file->_ptr += pcnt;
written += pcnt;
wrcnt -= pcnt;
ptr = (const char*)ptr + pcnt;
} else if(!file->_bufsiz && (file->_flag & _IONBF)) {
if(!(file->_flag & _IOWRT)) {
if(file->_flag & _IORW)
file->_flag |= _IOWRT;
else
break;
}
} else if((file->_flag & _IONBF)
|| ((file->_flag & (_IOMYBUF | _USERBUF)) && wrcnt >= file->_bufsiz)
|| (!(file->_flag & (_IOMYBUF | _USERBUF)) && wrcnt >= MSVCRT_INTERNAL_BUFSIZ)) {
size_t pcnt;
int bufsiz;
if(_write(file->_file, ptr, wrcnt) <= 0) {
if(file->_flag & _IONBF)
bufsiz = 1;
else if(!(file->_flag & (_IOMYBUF | _USERBUF)))
bufsiz = MSVCRT_INTERNAL_BUFSIZ;
else
bufsiz = file->_bufsiz;
pcnt = (wrcnt / bufsiz) * bufsiz;
if(flush_buffer(file) == EOF)
break;
if(_write(file->_file, ptr, pcnt) <= 0) {
file->_flag |= _IOERR;
break;
}
written += wrcnt;
wrcnt = 0;
written += pcnt;
wrcnt -= pcnt;
ptr = (const char*)ptr + pcnt;
} else {
if(_flsbuf(*(const char*)ptr, file) == EOF)
break;