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use get_commit_buffer to avoid duplicate code

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For both of these sites, we already do the "fallback to
read_sha1_file" trick. But we can shorten the code by just
using get_commit_buffer.

Note that the error cases are slightly different when
read_sha1_file fails. get_commit_buffer will die() if the
object cannot be loaded, or is a non-commit.

For get_sha1_oneline, this will almost certainly never
happen, as we will have just called parse_object (and if it
does, it's probably worth complaining about).

For record_author_date, the new behavior is probably better;
we notify the user of the error instead of silently ignoring
it. And because it's used only for sorting by author-date,
somebody examining a corrupt repo can fallback to the
regular traversal order.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2014-06-10 17:41:02 -04:00 committed by Junio C Hamano
parent a97934d820
commit ba41c1c93f
2 changed files with 7 additions and 27 deletions
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16
commit.c
View File

@ -583,22 +583,12 @@ static void record_author_date(struct author_date_slab *author_date,
struct commit *commit)
{
const char *buf, *line_end, *ident_line;
char *buffer = NULL;
const char *buffer = get_commit_buffer(commit);
struct ident_split ident;
char *date_end;
unsigned long date;
if (!commit->buffer) {
unsigned long size;
enum object_type type;
buffer = read_sha1_file(commit->object.sha1, &type, &size);
if (!buffer)
return;
}
for (buf = commit->buffer ? commit->buffer : buffer;
buf;
buf = line_end + 1) {
for (buf = buffer; buf; buf = line_end + 1) {
line_end = strchrnul(buf, '\n');
ident_line = skip_prefix(buf, "author ");
if (!ident_line) {
@ -619,7 +609,7 @@ static void record_author_date(struct author_date_slab *author_date,
*(author_date_slab_at(author_date, commit)) = date;
fail_exit:
free(buffer);
unuse_commit_buffer(commit, buffer);
}
static int compare_commits_by_author_date(const void *a_, const void *b_,

18
sha1_name.c
View File

@ -862,27 +862,17 @@ static int get_sha1_oneline(const char *prefix, unsigned char *sha1,
commit_list_insert(l->item, &backup);
}
while (list) {
char *p, *to_free = NULL;
const char *p, *buf;
struct commit *commit;
enum object_type type;
unsigned long size;
int matches;
commit = pop_most_recent_commit(&list, ONELINE_SEEN);
if (!parse_object(commit->object.sha1))
continue;
if (commit->buffer)
p = commit->buffer;
else {
p = read_sha1_file(commit->object.sha1, &type, &size);
if (!p)
continue;
to_free = p;
}
p = strstr(p, "\n\n");
buf = get_commit_buffer(commit);
p = strstr(buf, "\n\n");
matches = p && !regexec(&regex, p + 2, 0, NULL, 0);
free(to_free);
unuse_commit_buffer(commit, buf);
if (matches) {
hashcpy(sha1, commit->object.sha1);