size_t _fwrite(const void *buf, size_t count, FILE *file)
{
struct _IO_file_pvt *f = stdio_pvt(file);
size_t bytes = 0;
size_t pf_len, pu_len;
const char *p = buf;
const char *q;
/* We divide the data into two chunks, flushed (pf)
and unflushed (pu) depending on buffering mode
and contents. */
switch (f->bufmode) {
case _IOFBF:
pf_len = 0;
break;
case _IOLBF:
q = memrchr(p, '\n', count);
pf_len = q ? q - p + 1 : 0;
break;
case _IONBF:
default:
pf_len = count;
break;
}
if (pf_len) {
bytes = fwrite_noflush(p, pf_len, f);
p += bytes;
if (__fflush(f) || bytes != pf_len)
return bytes;
}
pu_len = count - pf_len;
if (pu_len)
bytes += fwrite_noflush(p, pu_len, f);
return bytes;
}
size_t _fwrite(const void *buf, size_t count, FILE *f)
{
size_t bytes = 0;
size_t pf_len, pu_len;
const char *p = buf;
/* We divide the data into two chunks, flushed (pf)
and unflushed (pu) depending on buffering mode
and contents. */
if (f->flags & _IO_FILE_FLAG_UNBUF) {
pf_len = 0;
pu_len = count;
} else if (f->flags & _IO_FILE_FLAG_LINE_BUF) {
pf_len = count;
pu_len = 0;
while (pf_len && p[pf_len-1] != '\n') {
pf_len--;
pu_len++;
}
} else {
pf_len = 0;
pu_len = count;
}
if (pf_len) {
bytes = fwrite_noflush(p, pf_len, f);
p += bytes;
if (fflush(f) || bytes != pf_len)
return bytes;
}
if (pu_len)
bytes += fwrite_noflush(p, pu_len, f);
return bytes;
}
