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-rw-r--r--commit.c46
1 files changed, 26 insertions, 20 deletions
diff --git a/commit.c b/commit.c
index 8b28415939..17a93d1e64 100644
--- a/commit.c
+++ b/commit.c
@@ -134,35 +134,41 @@ int register_commit_graft(struct commit_graft *graft, int ignore_dups)
return 0;
}
-struct commit_graft *read_graft_line(char *buf, int len)
+struct commit_graft *read_graft_line(struct strbuf *line)
{
/* The format is just "Commit Parent1 Parent2 ...\n" */
- int i;
+ int i, phase;
+ const char *tail = NULL;
struct commit_graft *graft = NULL;
- const int entry_size = GIT_SHA1_HEXSZ + 1;
+ struct object_id dummy_oid, *oid;
- while (len && isspace(buf[len-1]))
- buf[--len] = '\0';
- if (buf[0] == '#' || buf[0] == '\0')
+ strbuf_rtrim(line);
+ if (!line->len || line->buf[0] == '#')
return NULL;
- if ((len + 1) % entry_size)
- goto bad_graft_data;
- i = (len + 1) / entry_size - 1;
- graft = xmalloc(st_add(sizeof(*graft), st_mult(GIT_SHA1_RAWSZ, i)));
- graft->nr_parent = i;
- if (get_oid_hex(buf, &graft->oid))
- goto bad_graft_data;
- for (i = GIT_SHA1_HEXSZ; i < len; i += entry_size) {
- if (buf[i] != ' ')
- goto bad_graft_data;
- if (get_sha1_hex(buf + i + 1, graft->parent[i/entry_size].hash))
+ /*
+ * phase 0 verifies line, counts hashes in line and allocates graft
+ * phase 1 fills graft
+ */
+ for (phase = 0; phase < 2; phase++) {
+ oid = graft ? &graft->oid : &dummy_oid;
+ if (parse_oid_hex(line->buf, oid, &tail))
goto bad_graft_data;
+ for (i = 0; *tail != '\0'; i++) {
+ oid = graft ? &graft->parent[i] : &dummy_oid;
+ if (!isspace(*tail++) || parse_oid_hex(tail, oid, &tail))
+ goto bad_graft_data;
+ }
+ if (!graft) {
+ graft = xmalloc(st_add(sizeof(*graft),
+ st_mult(sizeof(struct object_id), i)));
+ graft->nr_parent = i;
+ }
}
return graft;
bad_graft_data:
- error("bad graft data: %s", buf);
- free(graft);
+ error("bad graft data: %s", line->buf);
+ assert(!graft);
return NULL;
}
@@ -174,7 +180,7 @@ static int read_graft_file(const char *graft_file)
return -1;
while (!strbuf_getwholeline(&buf, fp, '\n')) {
/* The format is just "Commit Parent1 Parent2 ...\n" */
- struct commit_graft *graft = read_graft_line(buf.buf, buf.len);
+ struct commit_graft *graft = read_graft_line(&buf);
if (!graft)
continue;
if (register_commit_graft(graft, 1))