diff options
author | Yuxuan Shui <yshuiv7@gmail.com> | 2014-03-13 08:45:51 +0400 |
---|---|---|
committer | Junio C Hamano <gitster@pobox.com> | 2014-03-20 02:34:56 +0400 |
commit | 2d820a61dfd50d50cafab47f75a507f3e6657e9b (patch) | |
tree | f43faae9baa38e3b582f4db1f1cfa8cee225078d | |
parent | de42180f6a645491c7ca8683ff2d5060f85f0c51 (diff) |
fsck.c:fsck_commit(): use skip_prefix() to verify and skip constant
fsck_commit() uses memcmp() to check if the buffer starts with a
certain prefix, and skips the prefix if it does.
This is exactly what skip_prefix() was designed for.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r-- | fsck.c | 24 |
1 files changed, 13 insertions, 11 deletions
@@ -281,7 +281,7 @@ static int fsck_ident(const char **ident, struct object *obj, fsck_error error_f static int fsck_commit(struct commit *commit, fsck_error error_func) { - const char *buffer = commit->buffer; + const char *buffer = commit->buffer, *tmp; unsigned char tree_sha1[20], sha1[20]; struct commit_graft *graft; int parents = 0; @@ -290,15 +290,17 @@ static int fsck_commit(struct commit *commit, fsck_error error_func) if (commit->date == ULONG_MAX) return error_func(&commit->object, FSCK_ERROR, "invalid author/committer line"); - if (memcmp(buffer, "tree ", 5)) + buffer = skip_prefix(buffer, "tree "); + if (!buffer) return error_func(&commit->object, FSCK_ERROR, "invalid format - expected 'tree' line"); - if (get_sha1_hex(buffer+5, tree_sha1) || buffer[45] != '\n') + if (get_sha1_hex(buffer, tree_sha1) || buffer[40] != '\n') return error_func(&commit->object, FSCK_ERROR, "invalid 'tree' line format - bad sha1"); - buffer += 46; - while (!memcmp(buffer, "parent ", 7)) { - if (get_sha1_hex(buffer+7, sha1) || buffer[47] != '\n') + buffer += 41; + while ((tmp = skip_prefix(buffer, "parent "))) { + buffer = tmp; + if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n') return error_func(&commit->object, FSCK_ERROR, "invalid 'parent' line format - bad sha1"); - buffer += 48; + buffer += 41; parents++; } graft = lookup_commit_graft(commit->object.sha1); @@ -322,15 +324,15 @@ static int fsck_commit(struct commit *commit, fsck_error error_func) if (p || parents) return error_func(&commit->object, FSCK_ERROR, "parent objects missing"); } - if (memcmp(buffer, "author ", 7)) + buffer = skip_prefix(buffer, "author "); + if (!buffer) return error_func(&commit->object, FSCK_ERROR, "invalid format - expected 'author' line"); - buffer += 7; err = fsck_ident(&buffer, &commit->object, error_func); if (err) return err; - if (memcmp(buffer, "committer ", strlen("committer "))) + buffer = skip_prefix(buffer, "committer "); + if (!buffer) return error_func(&commit->object, FSCK_ERROR, "invalid format - expected 'committer' line"); - buffer += strlen("committer "); err = fsck_ident(&buffer, &commit->object, error_func); if (err) return err; |