For a commit with has "1234abcd" and subject "foo", this
function produces a struct with three strings:
1. "foo"
2. "1234abcd... foo"
3. "parent of 1234abcd... foo"
It takes advantage of the fact that these strings are
subsets of each other, and allocates only _one_ string, with
pointers into the various parts. Unfortunately, this makes
the string allocation complicated and hard to follow.
Since we keep only one of these in memory at a time, we can
afford to simply allocate three strings. This lets us build
on tools like xstrfmt and avoid manual computation.
While we're here, we can also drop the ad-hoc
reimplementation of get_git_commit_encoding(), and simply
call that function.
Signed-off-by: Jeff King
---
sequencer.c | 29 ++---
1 file changed, 10 insertions(+), 19 deletions(-)
diff --git a/sequencer.c b/sequencer.c
index 8048786..e66f2fe 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -124,42 +124,33 @@ static const char *action_name(const struct replay_opts
*opts)
struct commit_message {
char *parent_label;
- const char *label;
- const char *subject;
+ char *label;
+ char *subject;
const char *message;
};
static int get_message(struct commit *commit, struct commit_message *out)
{
const char *abbrev, *subject;
- int abbrev_len, subject_len;
- char *q;
-
- if (!git_commit_encoding)
- git_commit_encoding = "UTF-8";
+ int subject_len;
- out->message = logmsg_reencode(commit, NULL, git_commit_encoding);
+ out->message = logmsg_reencode(commit, NULL,
get_commit_output_encoding());
abbrev = find_unique_abbrev(commit->object.oid.hash, DEFAULT_ABBREV);
- abbrev_len = strlen(abbrev);
subject_len = find_commit_subject(out->message, &subject);
- out->parent_label = xmalloc(strlen("parent of ") + abbrev_len +
- strlen("... ") + subject_len + 1);
- q = out->parent_label;
- q = mempcpy(q, "parent of ", strlen("parent of "));
- out->label = q;
- q = mempcpy(q, abbrev, abbrev_len);
- q = mempcpy(q, "... ", strlen("... "));
- out->subject = q;
- q = mempcpy(q, subject, subject_len);
- *q = '\0';
+ out->subject = xmemdupz(subject, subject_len);
+ out->label = xstrfmt("%s... %s", abbrev, out->subject);
+ out->parent_label = xstrfmt("parent of %s", out->label);
+
return 0;
}
static void free_message(struct commit *commit, struct commit_message *msg)
{
free(msg->parent_label);
+ free(msg->label);
+ free(msg->subject);
unuse_commit_buffer(commit, msg->message);
}
--
2.7.1.572.gf718037
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