In some cases, we use starts_with to check for a prefix, and
then use an already-calculated prefix length to advance a
pointer past the prefix. There are no magic numbers or
duplicated strings here, but we can still make the code
simpler and more obvious by using skip_prefix.
Signed-off-by: Jeff King <p...@peff.net>
---
help.c | 11 +++++------
http.c | 3 +--
2 files changed, 6 insertions(+), 8 deletions(-)
diff --git a/help.c b/help.c
index 79e8007..f31f29a 100644
--- a/help.c
+++ b/help.c
@@ -129,7 +129,6 @@ static void list_commands_in_dir(struct cmdnames *cmds,
const char *path,
const char *prefix)
{
- int prefix_len;
DIR *dir = opendir(path);
struct dirent *de;
struct strbuf buf = STRBUF_INIT;
@@ -139,15 +138,15 @@ static void list_commands_in_dir(struct cmdnames *cmds,
return;
if (!prefix)
prefix = "git-";
- prefix_len = strlen(prefix);
strbuf_addf(&buf, "%s/", path);
len = buf.len;
while ((de = readdir(dir)) != NULL) {
+ const char *ent;
int entlen;
- if (!starts_with(de->d_name, prefix))
+ if (!skip_prefix(de->d_name, prefix, &ent))
continue;
strbuf_setlen(&buf, len);
@@ -155,11 +154,11 @@ static void list_commands_in_dir(struct cmdnames *cmds,
if (!is_executable(buf.buf))
continue;
- entlen = strlen(de->d_name) - prefix_len;
- if (has_extension(de->d_name, ".exe"))
+ entlen = strlen(ent);
+ if (has_extension(ent, ".exe"))
entlen -= 4;
- add_cmdname(cmds, de->d_name + prefix_len, entlen);
+ add_cmdname(cmds, ent, entlen);
}
closedir(dir);
strbuf_release(&buf);
diff --git a/http.c b/http.c
index 2b4f6a3..f04621e 100644
--- a/http.c
+++ b/http.c
@@ -1087,11 +1087,10 @@ static int update_url_from_redirect(struct strbuf *base,
if (!strcmp(asked, got->buf))
return 0;
- if (!starts_with(asked, base->buf))
+ if (!skip_prefix(asked, base->buf, &tail))
die("BUG: update_url_from_redirect: %s is not a superset of %s",
asked, base->buf);
- tail = asked + base->len;
tail_len = strlen(tail);
if (got->len < tail_len ||
--
2.0.0.566.gfe3e6b2
--
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