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sha1_file: normalize alt_odb path before comparing and storing

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When it needs to compare and add an alt object path to the
alt_odb_list, we normalize this path first since comparing normalized
path is easy to get correct result.

Use strbuf to replace some string operations, since it is cleaner and
safer.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Hui Wang <Hui.Wang@windriver.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Hui Wang 2011-09-07 18:37:47 +08:00 committed by Junio C Hamano
parent f696543dad
commit 5bdf0a8468
1 changed files with 20 additions and 17 deletions
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37
sha1_file.c
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@ -248,27 +248,30 @@ static int link_alt_odb_entry(const char * entry, int len, const char * relative
const char *objdir = get_object_directory();
struct alternate_object_database *ent;
struct alternate_object_database *alt;
/* 43 = 40-byte + 2 '/' + terminating NUL */
int pfxlen = len;
int entlen = pfxlen + 43;
int base_len = -1;
int pfxlen, entlen;
struct strbuf pathbuf = STRBUF_INIT;
if (!is_absolute_path(entry) && relative_base) {
/* Relative alt-odb */
if (base_len < 0)
base_len = strlen(relative_base) + 1;
entlen += base_len;
pfxlen += base_len;
strbuf_addstr(&pathbuf, real_path(relative_base));
strbuf_addch(&pathbuf, '/');
}
strbuf_add(&pathbuf, entry, len);
normalize_path_copy(pathbuf.buf, pathbuf.buf);
pfxlen = strlen(pathbuf.buf);
/*
* The trailing slash after the directory name is given by
* this function at the end. Remove duplicates.
*/
while (pfxlen && pathbuf.buf[pfxlen-1] == '/')
pfxlen -= 1;
entlen = pfxlen + 43; /* '/' + 2 hex + '/' + 38 hex + NUL */
ent = xmalloc(sizeof(*ent) + entlen);
if (!is_absolute_path(entry) && relative_base) {
memcpy(ent->base, relative_base, base_len - 1);
ent->base[base_len - 1] = '/';
memcpy(ent->base + base_len, entry, len);
}
else
memcpy(ent->base, entry, pfxlen);
memcpy(ent->base, pathbuf.buf, pfxlen);
strbuf_release(&pathbuf);
ent->name = ent->base + pfxlen + 1;
ent->base[pfxlen + 3] = '/';