musl/src/stdio/fwrite.c
Rich Felker 835f9f950e clean up stdio_impl.h
this header evolved to facilitate the extremely lazy practice of
omitting explicit includes of the necessary headers in individual
stdio source files; not only was this sloppy, but it also increased
build time.

now, stdio_impl.h is only including the headers it needs for its own
use; any further headers needed by source files are included directly
where needed.
2012-11-08 16:39:41 -05:00

39 lines
715 B
C

#include "stdio_impl.h"
#include <string.h>
size_t __fwritex(const unsigned char *restrict s, size_t l, FILE *restrict f)
{
size_t i=0;
if (!f->wend && __towrite(f)) return 0;
if (l > f->wend - f->wpos) return f->write(f, s, l);
if (f->lbf >= 0) {
/* Match /^(.*\n|)/ */
for (i=l; i && s[i-1] != '\n'; i--);
if (i) {
if (f->write(f, s, i) < i)
return i;
s += i;
l -= i;
}
}
memcpy(f->wpos, s, l);
f->wpos += l;
return l+i;
}
size_t fwrite(const void *restrict src, size_t size, size_t nmemb, FILE *restrict f)
{
size_t k, l = size*nmemb;
if (!l) return l;
FLOCK(f);
k = __fwritex(src, l, f);
FUNLOCK(f);
return k==l ? nmemb : k/size;
}
weak_alias(fwrite, fwrite_unlocked);