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read_packed_refs(): only check for a header at the top of the file

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This tightens up the parsing a bit; previously, stray header-looking
lines would have been processed.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Michael Haggerty 2017-09-13 19:16:00 +02:00 committed by Junio C Hamano
parent 49a03ef466
commit 36f23534ae
1 changed files with 26 additions and 13 deletions
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39
refs/packed-backend.c
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@ -255,10 +255,8 @@ static struct packed_ref_cache *read_packed_refs(struct packed_ref_store *refs)
pos = buf;
eof = buf + size;
dir = get_ref_dir(packed_refs->cache->root);
while (pos < eof) {
struct object_id oid;
const char *refname;
/* If the file has a header line, process it: */
if (pos < eof && *pos == '#') {
const char *traits;
eol = memchr(pos, '\n', eof - pos);
@ -267,14 +265,30 @@ static struct packed_ref_cache *read_packed_refs(struct packed_ref_store *refs)
strbuf_add(&line, pos, eol + 1 - pos);
if (skip_prefix(line.buf, "# pack-refs with:", &traits)) {
if (strstr(traits, " fully-peeled "))
peeled = PEELED_FULLY;
else if (strstr(traits, " peeled "))
peeled = PEELED_TAGS;
/* perhaps other traits later as well */
goto next_line;
}
if (!skip_prefix(line.buf, "# pack-refs with:", &traits))
die_invalid_line(refs->path, pos, eof - pos);
if (strstr(traits, " fully-peeled "))
peeled = PEELED_FULLY;
else if (strstr(traits, " peeled "))
peeled = PEELED_TAGS;
/* perhaps other traits later as well */
/* The "+ 1" is for the LF character. */
pos = eol + 1;
strbuf_reset(&line);
}
dir = get_ref_dir(packed_refs->cache->root);
while (pos < eof) {
struct object_id oid;
const char *refname;
eol = memchr(pos, '\n', eof - pos);
if (!eol)
die_unterminated_line(refs->path, pos, eof - pos);
strbuf_add(&line, pos, eol + 1 - pos);
refname = parse_ref_line(&line, &oid);
if (refname) {
@ -307,7 +321,6 @@ static struct packed_ref_cache *read_packed_refs(struct packed_ref_store *refs)
die_invalid_line(refs->path, line.buf, line.len);
}
next_line:
/* The "+ 1" is for the LF character. */
pos = eol + 1;
strbuf_reset(&line);