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diff --git a/sha1_name.c b/sha1_name.c
index 9dfb3ac57403793e6c6f78f2f75fb61c0a56c4bc..267ea3f3edc63600bc1591d2115ee85222f3e8c5 100644 (file)
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -71,19 +71,19 @@ static int match_sha(unsigned len, const unsigned char *a, const unsigned char *
static int find_short_packed_object(int len, const unsigned char *match, unsigned char *sha1)
{
struct packed_git *p;
- unsigned char found_sha1[20];
+ const unsigned char *found_sha1 = NULL;
int found = 0;
prepare_packed_git();
for (p = packed_git; p && found < 2; p = p->next) {
- unsigned num = num_packed_objects(p);
- unsigned first = 0, last = num;
+ uint32_t num = num_packed_objects(p);
+ uint32_t first = 0, last = num;
while (first < last) {
- unsigned mid = (first + last) / 2;
- unsigned char now[20];
+ uint32_t mid = (first + last) / 2;
+ const unsigned char *now;
int cmp;
- nth_packed_object_sha1(p, mid, now);
+ now = nth_packed_object_sha1(p, mid);
cmp = hashcmp(match, now);
if (!cmp) {
first = mid;
@@ -96,14 +96,14 @@ static int find_short_packed_object(int len, const unsigned char *match, unsigne
last = mid;
}
if (first < num) {
- unsigned char now[20], next[20];
- nth_packed_object_sha1(p, first, now);
+ const unsigned char *now, *next;
+ now = nth_packed_object_sha1(p, first);
if (match_sha(len, match, now)) {
- if (nth_packed_object_sha1(p, first+1, next) ||
- !match_sha(len, match, next)) {
+ next = nth_packed_object_sha1(p, first+1);
+ if (!next|| !match_sha(len, match, next)) {
/* unique within this pack */
if (!found) {
- hashcpy(found_sha1, now);
+ found_sha1 = now;
found++;
}
else if (hashcmp(found_sha1, now)) {
return slash;
}
+static const char *ref_fmt[] = {
+ "%.*s",
+ "refs/%.*s",
+ "refs/tags/%.*s",
+ "refs/heads/%.*s",
+ "refs/remotes/%.*s",
+ "refs/remotes/%.*s/HEAD",
+ NULL
+};
+
int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref)
{
- static const char *fmt[] = {
- "%.*s",
- "refs/%.*s",
- "refs/tags/%.*s",
- "refs/heads/%.*s",
- "refs/remotes/%.*s",
- "refs/remotes/%.*s/HEAD",
- NULL
- };
const char **p, *r;
int refs_found = 0;
*ref = NULL;
- for (p = fmt; *p; p++) {
+ for (p = ref_fmt; *p; p++) {
unsigned char sha1_from_ref[20];
unsigned char *this_result;
return refs_found;
}
+int dwim_log(const char *str, int len, unsigned char *sha1, char **log)
+{
+ const char **p;
+ int logs_found = 0;
+
+ *log = NULL;
+ for (p = ref_fmt; *p; p++) {
+ struct stat st;
+ unsigned char hash[20];
+ char path[PATH_MAX];
+ const char *ref, *it;
+
+ strcpy(path, mkpath(*p, len, str));
+ ref = resolve_ref(path, hash, 0, NULL);
+ if (!ref)
+ continue;
+ if (!stat(git_path("logs/%s", path), &st) &&
+ S_ISREG(st.st_mode))
+ it = path;
+ else if (strcmp(ref, path) &&
+ !stat(git_path("logs/%s", ref), &st) &&
+ S_ISREG(st.st_mode))
+ it = ref;
+ else
+ continue;
+ if (!logs_found++) {
+ *log = xstrdup(it);
+ hashcpy(sha1, hash);
+ }
+ if (!warn_ambiguous_refs)
+ break;
+ }
+ return logs_found;
+}
+
static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
{
static const char *warning = "warning: refname '%.*s' is ambiguous.\n";
/* basic@{time or number} format to query ref-log */
reflog_len = at = 0;
if (str[len-1] == '}') {
- for (at = 1; at < len - 1; at++) {
+ for (at = 0; at < len - 1; at++) {
if (str[at] == '@' && str[at+1] == '{') {
reflog_len = (len-1) - (at+2);
len = at;
}
/* Accept only unambiguous ref paths. */
- if (ambiguous_path(str, len))
+ if (len && ambiguous_path(str, len))
return -1;
- refs_found = dwim_ref(str, len, sha1, &real_ref);
+ if (!len && reflog_len) {
+ /* allow "@{...}" to mean the current branch reflog */
+ refs_found = dwim_ref("HEAD", 4, sha1, &real_ref);
+ } else if (reflog_len)
+ refs_found = dwim_log(str, len, sha1, &real_ref);
+ else
+ refs_found = dwim_ref(str, len, sha1, &real_ref);
if (!refs_found)
return -1;
fprintf(stderr, warning, len, str);
if (reflog_len) {
- /* Is it asking for N-th entry, or approxidate? */
int nth, i;
unsigned long at_time;
unsigned long co_time;
int co_tz, co_cnt;
+ /* Is it asking for N-th entry, or approxidate? */
for (i = nth = 0; 0 <= nth && i < reflog_len; i++) {
char ch = str[at+2+i];
if ('0' <= ch && ch <= '9')
return get_short_sha1(name, len, sha1, 0);
}
+static int handle_one_ref(const char *path,
+ const unsigned char *sha1, int flag, void *cb_data)
+{
+ struct commit_list **list = cb_data;
+ struct object *object = parse_object(sha1);
+ if (!object)
+ return 0;
+ if (object->type == OBJ_TAG)
+ object = deref_tag(object, path, strlen(path));
+ if (object->type != OBJ_COMMIT)
+ return 0;
+ insert_by_date((struct commit *)object, list);
+ return 0;
+}
+
+/*
+ * This interprets names like ':/Initial revision of "git"' by searching
+ * through history and returning the first commit whose message starts
+ * with the given string.
+ *
+ * For future extension, ':/!' is reserved. If you want to match a message
+ * beginning with a '!', you have to repeat the exclamation mark.
+ */
+
+#define ONELINE_SEEN (1u<<20)
+static int get_sha1_oneline(const char *prefix, unsigned char *sha1)
+{
+ struct commit_list *list = NULL, *backup = NULL, *l;
+ int retval = -1;
+
+ if (prefix[0] == '!') {
+ if (prefix[1] != '!')
+ die ("Invalid search pattern: %s", prefix);
+ prefix++;
+ }
+ if (!save_commit_buffer)
+ return error("Could not expand oneline-name.");
+ for_each_ref(handle_one_ref, &list);
+ for (l = list; l; l = l->next)
+ commit_list_insert(l->item, &backup);
+ while (list) {
+ char *p;
+ struct commit *commit;
+
+ commit = pop_most_recent_commit(&list, ONELINE_SEEN);
+ parse_object(commit->object.sha1);
+ if (!commit->buffer || !(p = strstr(commit->buffer, "\n\n")))
+ continue;
+ if (!prefixcmp(p + 2, prefix)) {
+ hashcpy(sha1, commit->object.sha1);
+ retval = 0;
+ break;
+ }
+ }
+ free_commit_list(list);
+ for (l = backup; l; l = l->next)
+ clear_commit_marks(l->item, ONELINE_SEEN);
+ return retval;
+}
+
/*
* This is like "get_sha1_basic()", except it allows "sha1 expressions",
* notably "xyz^" for "parent of xyz"
int stage = 0;
struct cache_entry *ce;
int pos;
+ if (namelen > 2 && name[1] == '/')
+ return get_sha1_oneline(name + 2, sha1);
if (namelen < 3 ||
name[2] != ':' ||
name[1] < '0' || '3' < name[1])