getline isn't useful here, because we just need to read then output
lines. We do not need anything more complex than counting '\n's, so
we shouldn't use a buffer like we currently do.
---
head.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/head.c b/head.c
index ae550c0..08a219b 100644
--- a/head.c
+++ b/head.c
@@ -9,15 +9,16 @@
static void
head(FILE *fp, const char *fname, size_t n)
{
- char *buf = NULL;
- size_t i = 0, size = 0;
- ssize_t len;
+ int c;
+ size_t i = 0;
- while (i < n && (len = getline(&buf, &size, fp)) > 0) {
- fwrite(buf, 1, len, stdout);
- i += (len && (buf[len - 1] == '\n'));
+ while (i < n && (c = fgetc(fp)) != EOF) {
+ if (fputc(c, stdout) == EOF)
+ eprintf("fputc:");
+ if (c == '\n')
+ i++;
}
- free(buf);
+
if (ferror(fp))
eprintf("getline %s:", fname);
}
--
2.44.0
