sbase/libutil/concat.c
FRIGN b3e8b17235 Audit concat() in libutil
Be more pedantic about the error-checking, fread can also return
values > 0 even though there has been a read-error.
We want to write the last incoming data and then bail.
2015-03-18 22:58:42 +01:00

23 lines
436 B
C

/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include "../text.h"
#include "../util.h"
void
concat(FILE *fp1, const char *s1, FILE *fp2, const char *s2)
{
char buf[BUFSIZ];
size_t n;
while ((n = fread(buf, 1, sizeof(buf), fp1))) {
fwrite(buf, 1, n, fp2);
if (ferror(fp2))
eprintf("fwrite %s:", s2);
if (feof(fp1) || ferror(fp1))
break;
}
if (ferror(fp1))
eprintf("fread %s", s1);
}