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 <p...@peff.net>
---
builtin/remote.c | 13 +++++++------
builtin/repack.c | 5 ++---
connected.c | 6 +++---
help.c | 5 ++---
4 files changed, 14 insertions(+), 15 deletions(-)
diff --git a/builtin/remote.c b/builtin/remote.c
index c9102e8..7c2999e 100644
--- a/builtin/remote.c
+++ b/builtin/remote.c
@@ -265,16 +265,17 @@ static int config_read_branches(const char *key, const
char *value, void *cb)
struct string_list_item *item;
struct branch_info *info;
enum { REMOTE, MERGE, REBASE } type;
+ size_t key_len;
key += 7;
- if (ends_with(key, ".remote")) {
- name = xstrndup(key, strlen(key) - 7);
+ if (strip_suffix(key, ".remote", &key_len)) {
+ name = xmemdupz(key, key_len);
type = REMOTE;
- } else if (ends_with(key, ".merge")) {
- name = xstrndup(key, strlen(key) - 6);
+ } else if (strip_suffix(key, ".merge", &key_len)) {
+ name = xmemdupz(key, key_len);
type = MERGE;
- } else if (ends_with(key, ".rebase")) {
- name = xstrndup(key, strlen(key) - 7);
+ } else if (strip_suffix(key, ".rebase", &key_len)) {
+ name = xmemdupz(key, key_len);
type = REBASE;
} else
return 0;
diff --git a/builtin/repack.c b/builtin/repack.c
index ff2216a..a77e743 100644
--- a/builtin/repack.c
+++ b/builtin/repack.c
@@ -83,16 +83,15 @@ static void get_non_kept_pack_filenames(struct string_list
*fname_list)
DIR *dir;
struct dirent *e;
char *fname;
- size_t len;
if (!(dir = opendir(packdir)))
return;
while ((e = readdir(dir)) != NULL) {
- if (!ends_with(e->d_name, ".pack"))
+ size_t len;
+ if (!strip_suffix(e->d_name, ".pack", &len))
continue;
- len = strlen(e->d_name) - strlen(".pack");
fname = xmemdupz(e->d_name, len);
if (!file_exists(mkpath("%s/%s.keep", packdir, fname)))
diff --git a/connected.c b/connected.c
index be0253e..dae9c99 100644
--- a/connected.c
+++ b/connected.c
@@ -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);
diff --git a/help.c b/help.c
index 372728f..97567c4 100644
--- a/help.c
+++ b/help.c
@@ -145,7 +145,7 @@ static void list_commands_in_dir(struct cmdnames *cmds,
len = buf.len;
while ((de = readdir(dir)) != NULL) {
- int entlen;
+ size_t entlen;
if (!starts_with(de->d_name, prefix))
continue;
@@ -156,8 +156,7 @@ static void list_commands_in_dir(struct cmdnames *cmds,
continue;
entlen = strlen(de->d_name) - prefix_len;
- if (ends_with(de->d_name, ".exe"))
- entlen -= 4;
+ strip_suffix(de->d_name, ".exe", &entlen);
add_cmdname(cmds, de->d_name + prefix_len, entlen);
}
--
2.0.0.566.gfe3e6b2
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