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use strip_suffix instead of ends_with in simple cases

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When stripping a suffix like:

  if (ends_with(str, "foo"))
	buf = xmemdupz(str, strlen(str) - 3);

we can instead use strip_suffix to avoid the constant 3,
which must match the literal "foo" (we sometimes use
strlen("foo") instead, but that means we are repeating
ourselves). The example above becomes:

  if (strip_suffix(str, "foo", &len))
	buf = xmemdupz(str, len);

This also saves a strlen(), since we calculate the string
length when detecting the suffix.

Note that in some cases we also switch from xstrndup to
xmemdupz, which saves a further strlen call.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2014-06-30 12:58:51 -04:00
committed by Junio C Hamano
parent 2975c770ca
commit 26936bfd9b
4 changed files with 14 additions and 15 deletions
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6
connected.c
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@ -31,6 +31,7 @@ static int check_everything_connected_real(sha1_iterate_fn fn,
unsigned char sha1[20];
int err = 0, ac = 0;
struct packed_git *new_pack = NULL;
size_t base_len;
if (fn(cb_data, sha1))
return err;
@ -38,10 +39,9 @@ static int check_everything_connected_real(sha1_iterate_fn fn,
if (transport && transport->smart_options &&
transport->smart_options->self_contained_and_connected &&
transport->pack_lockfile &&
ends_with(transport->pack_lockfile, ".keep")) {
strip_suffix(transport->pack_lockfile, ".keep", &base_len)) {
struct strbuf idx_file = STRBUF_INIT;
strbuf_addstr(&idx_file, transport->pack_lockfile);
strbuf_setlen(&idx_file, idx_file.len - 5); /* ".keep" */
strbuf_add(&idx_file, transport->pack_lockfile, base_len);
strbuf_addstr(&idx_file, ".idx");
new_pack = add_packed_git(idx_file.buf, idx_file.len, 1);
strbuf_release(&idx_file);