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re
fsck.c:fsck_commit(): use skip_prefix() to verify and skip constant
author
Yuxuan Shui
<yshuiv7@gmail.com>
Thu, 13 Mar 2014 04:45:51 +0000
(12:45 +0800)
committer
Junio C Hamano
<gitster@pobox.com>
Wed, 19 Mar 2014 22:34:56 +0000
(15:34 -0700)
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>
fsck.c
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diff --git
a/fsck.c
b/fsck.c
index 7776660d53b334d19b853f10cd006e8c75aa196d..6aab23b84502095fef98f9c1b4fa39d586a74085 100644
(file)
--- a/
fsck.c
+++ b/
fsck.c
@@
-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)
{
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;
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 (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");
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");
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");
return error_func(&commit->object, FSCK_ERROR, "invalid 'parent' line format - bad sha1");
- buffer += 4
8
;
+ buffer += 4
1
;
parents++;
}
graft = lookup_commit_graft(commit->object.sha1);
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 (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");
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;
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");
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;
err = fsck_ident(&buffer, &commit->object, error_func);
if (err)
return err;