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diff_populate_gitlink: use a strbuf

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We allocate 100 bytes to hold the "Submodule commit ..."
text. This is enough, but it's not immediately obvious that
this is the case, and we have to repeat the magic 100 twice.

We could get away with xstrfmt here, but we want to know the
size, as well, so let's use a real strbuf. And while we're
here, we can clean up the logic around size_only. It
currently sets and clears the "data" field pointlessly, and
leaves the "should_free" flag on even after we have cleared
the data.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2016-02-22 17:45:08 -05:00 committed by Junio C Hamano
parent 21f9d0f6f2
commit b1ddfb9151
1 changed files with 8 additions and 8 deletions
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16
diff.c
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@ -2704,21 +2704,21 @@ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int
static int diff_populate_gitlink(struct diff_filespec *s, int size_only)
{
int len;
char *data = xmalloc(100), *dirty = "";
struct strbuf buf = STRBUF_INIT;
char *dirty = "";
/* Are we looking at the work tree? */
if (s->dirty_submodule)
dirty = "-dirty";
len = snprintf(data, 100,
"Subproject commit %s%s\n", sha1_to_hex(s->sha1), dirty);
s->data = data;
s->size = len;
s->should_free = 1;
strbuf_addf(&buf, "Subproject commit %s%s\n", sha1_to_hex(s->sha1), dirty);
s->size = buf.len;
if (size_only) {
s->data = NULL;
free(data);
strbuf_release(&buf);
} else {
s->data = strbuf_detach(&buf, NULL);
s->should_free = 1;
}
return 0;
}