- }
-
- if (!read_ref_full("HEAD", sha1, 1, &flag))
- return fn("HEAD", sha1, flag, cb_data);
-
- return 0;
-}
-
-int head_ref(each_ref_fn fn, void *cb_data)
-{
- return do_head_ref(NULL, fn, cb_data);
-}
-
-int head_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data)
-{
- return do_head_ref(submodule, fn, cb_data);
-}
-
-int for_each_ref(each_ref_fn fn, void *cb_data)
-{
- return do_for_each_ref(&ref_cache, "", fn, 0, 0, cb_data);
-}
-
-int for_each_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data)
-{
- return do_for_each_ref(get_ref_cache(submodule), "", fn, 0, 0, cb_data);
-}
-
-int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data)
-{
- return do_for_each_ref(&ref_cache, prefix, fn, strlen(prefix), 0, cb_data);
-}
-
-int for_each_ref_in_submodule(const char *submodule, const char *prefix,
- each_ref_fn fn, void *cb_data)
-{
- return do_for_each_ref(get_ref_cache(submodule), prefix, fn, strlen(prefix), 0, cb_data);
-}
-
-int for_each_tag_ref(each_ref_fn fn, void *cb_data)
-{
- return for_each_ref_in("refs/tags/", fn, cb_data);
-}
-
-int for_each_tag_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data)
-{
- return for_each_ref_in_submodule(submodule, "refs/tags/", fn, cb_data);
-}
-
-int for_each_branch_ref(each_ref_fn fn, void *cb_data)
-{
- return for_each_ref_in("refs/heads/", fn, cb_data);
-}
-
-int for_each_branch_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data)
-{
- return for_each_ref_in_submodule(submodule, "refs/heads/", fn, cb_data);
-}
-
-int for_each_remote_ref(each_ref_fn fn, void *cb_data)
-{
- return for_each_ref_in("refs/remotes/", fn, cb_data);
-}
-
-int for_each_remote_ref_submodule(const char *submodule, each_ref_fn fn, void *cb_data)
-{
- return for_each_ref_in_submodule(submodule, "refs/remotes/", fn, cb_data);
-}
-
-int for_each_replace_ref(each_ref_fn fn, void *cb_data)
-{
- return do_for_each_ref(&ref_cache, "refs/replace/", fn, 13, 0, cb_data);
-}
-
-int head_ref_namespaced(each_ref_fn fn, void *cb_data)
-{
- struct strbuf buf = STRBUF_INIT;
- int ret = 0;
- unsigned char sha1[20];
- int flag;
-
- strbuf_addf(&buf, "%sHEAD", get_git_namespace());
- if (!read_ref_full(buf.buf, sha1, 1, &flag))
- ret = fn(buf.buf, sha1, flag, cb_data);
- strbuf_release(&buf);
-
- return ret;
-}
-
-int for_each_namespaced_ref(each_ref_fn fn, void *cb_data)
-{
- struct strbuf buf = STRBUF_INIT;
- int ret;
- strbuf_addf(&buf, "%srefs/", get_git_namespace());
- ret = do_for_each_ref(&ref_cache, buf.buf, fn, 0, 0, cb_data);
- strbuf_release(&buf);
- return ret;
-}
-
-int for_each_glob_ref_in(each_ref_fn fn, const char *pattern,
- const char *prefix, void *cb_data)
-{
- struct strbuf real_pattern = STRBUF_INIT;
- struct ref_filter filter;
- int ret;
-
- if (!prefix && !starts_with(pattern, "refs/"))
- strbuf_addstr(&real_pattern, "refs/");
- else if (prefix)
- strbuf_addstr(&real_pattern, prefix);
- strbuf_addstr(&real_pattern, pattern);
-
- if (!has_glob_specials(pattern)) {
- /* Append implied '/' '*' if not present. */
- if (real_pattern.buf[real_pattern.len - 1] != '/')
- strbuf_addch(&real_pattern, '/');
- /* No need to check for '*', there is none. */
- strbuf_addch(&real_pattern, '*');
- }
-
- filter.pattern = real_pattern.buf;
- filter.fn = fn;
- filter.cb_data = cb_data;
- ret = for_each_ref(filter_refs, &filter);
-
- strbuf_release(&real_pattern);
- return ret;
-}
-
-int for_each_glob_ref(each_ref_fn fn, const char *pattern, void *cb_data)
-{
- return for_each_glob_ref_in(fn, pattern, NULL, cb_data);
-}
-
-int for_each_rawref(each_ref_fn fn, void *cb_data)
-{
- return do_for_each_ref(&ref_cache, "", fn, 0,
- DO_FOR_EACH_INCLUDE_BROKEN, cb_data);
-}
-
-const char *prettify_refname(const char *name)
-{
- return name + (
- starts_with(name, "refs/heads/") ? 11 :
- starts_with(name, "refs/tags/") ? 10 :
- starts_with(name, "refs/remotes/") ? 13 :
- 0);
-}
-
-static const char *ref_rev_parse_rules[] = {
- "%.*s",
- "refs/%.*s",
- "refs/tags/%.*s",
- "refs/heads/%.*s",
- "refs/remotes/%.*s",
- "refs/remotes/%.*s/HEAD",
- NULL
-};
-
-int refname_match(const char *abbrev_name, const char *full_name)
-{
- const char **p;
- const int abbrev_name_len = strlen(abbrev_name);
-
- for (p = ref_rev_parse_rules; *p; p++) {
- if (!strcmp(full_name, mkpath(*p, abbrev_name_len, abbrev_name))) {
- return 1;
- }
- }
-
- return 0;
-}
-
-/* This function should make sure errno is meaningful on error */
-static struct ref_lock *verify_lock(struct ref_lock *lock,
- const unsigned char *old_sha1, int mustexist)
-{
- if (read_ref_full(lock->ref_name, lock->old_sha1, mustexist, NULL)) {
- int save_errno = errno;
- error("Can't verify ref %s", lock->ref_name);
- unlock_ref(lock);
- errno = save_errno;
- return NULL;
- }
- if (hashcmp(lock->old_sha1, old_sha1)) {
- error("Ref %s is at %s but expected %s", lock->ref_name,
- sha1_to_hex(lock->old_sha1), sha1_to_hex(old_sha1));
- unlock_ref(lock);
- errno = EBUSY;
- return NULL;
- }
- return lock;
-}
-
-static int remove_empty_directories(const char *file)
-{
- /* we want to create a file but there is a directory there;
- * if that is an empty directory (or a directory that contains
- * only empty directories), remove them.
- */
- struct strbuf path;
- int result, save_errno;
-
- strbuf_init(&path, 20);
- strbuf_addstr(&path, file);
-
- result = remove_dir_recursively(&path, REMOVE_DIR_EMPTY_ONLY);
- save_errno = errno;
-
- strbuf_release(&path);
- errno = save_errno;
-
- return result;
-}
-
-/*
- * *string and *len will only be substituted, and *string returned (for
- * later free()ing) if the string passed in is a magic short-hand form
- * to name a branch.
- */
-static char *substitute_branch_name(const char **string, int *len)
-{
- struct strbuf buf = STRBUF_INIT;
- int ret = interpret_branch_name(*string, *len, &buf);
-
- if (ret == *len) {
- size_t size;
- *string = strbuf_detach(&buf, &size);
- *len = size;
- return (char *)*string;
- }
-
- return NULL;
-}