6 static struct refspec_item s_tag_refspec = {
16 /* See TAG_REFSPEC for the string version */
17 const struct refspec_item *tag_refspec = &s_tag_refspec;
20 * Parses the provided refspec 'refspec' and populates the refspec_item 'item'.
21 * Returns 1 if successful and 0 if the refspec is invalid.
23 static int parse_refspec(struct refspec_item *item, const char *refspec, int fetch)
27 const char *lhs, *rhs;
36 } else if (*lhs == '^') {
41 rhs = strrchr(lhs, ':');
43 /* negative refspecs only have one side */
44 if (item->negative && rhs)
48 * Before going on, special case ":" (or "+:") as a refspec
49 * for pushing matching refs.
51 if (!fetch && rhs == lhs && rhs[1] == '\0') {
57 size_t rlen = strlen(++rhs);
58 is_glob = (1 <= rlen && strchr(rhs, '*'));
59 item->dst = xstrndup(rhs, rlen);
64 llen = (rhs ? (rhs - lhs - 1) : strlen(lhs));
65 if (1 <= llen && memchr(lhs, '*', llen)) {
66 if ((rhs && !is_glob) || (!rhs && !item->negative && fetch))
69 } else if (rhs && is_glob) {
73 item->pattern = is_glob;
74 if (llen == 1 && *lhs == '@')
75 item->src = xstrdup("HEAD");
77 item->src = xstrndup(lhs, llen);
78 flags = REFNAME_ALLOW_ONELEVEL | (is_glob ? REFNAME_REFSPEC_PATTERN : 0);
81 struct object_id unused;
84 * Negative refspecs only have a LHS, which indicates a ref
85 * (or pattern of refs) to exclude from other matches. This
86 * can either be a simple ref, or a glob pattern. Exact sha1
87 * match is not currently supported.
90 return 0; /* negative refspecs must not be empty */
91 else if (llen == the_hash_algo->hexsz && !get_oid_hex(item->src, &unused))
92 return 0; /* negative refpsecs cannot be exact sha1 */
93 else if (!check_refname_format(item->src, flags))
94 ; /* valid looking ref is ok */
98 /* the other rules below do not apply to negative refspecs */
103 struct object_id unused;
107 ; /* empty is ok; it means "HEAD" */
108 else if (llen == the_hash_algo->hexsz && !get_oid_hex(item->src, &unused))
109 item->exact_sha1 = 1; /* ok */
110 else if (!check_refname_format(item->src, flags))
111 ; /* valid looking ref is ok */
116 ; /* missing is ok; it is the same as empty */
117 else if (!*item->dst)
118 ; /* empty is ok; it means "do not store" */
119 else if (!check_refname_format(item->dst, flags))
120 ; /* valid looking ref is ok */
126 * - empty is allowed; it means delete.
127 * - when wildcarded, it must be a valid looking ref.
128 * - otherwise, it must be an extended SHA-1, but
129 * there is no existing way to validate this.
134 if (check_refname_format(item->src, flags))
138 ; /* anything goes, for now */
141 * - missing is allowed, but LHS then must be a
143 * - empty is not allowed.
144 * - otherwise it must be a valid looking ref.
147 if (check_refname_format(item->src, flags))
149 } else if (!*item->dst) {
152 if (check_refname_format(item->dst, flags))
160 int refspec_item_init(struct refspec_item *item, const char *refspec, int fetch)
162 memset(item, 0, sizeof(*item));
163 return parse_refspec(item, refspec, fetch);
166 void refspec_item_init_or_die(struct refspec_item *item, const char *refspec,
169 if (!refspec_item_init(item, refspec, fetch))
170 die(_("invalid refspec '%s'"), refspec);
173 void refspec_item_clear(struct refspec_item *item)
175 FREE_AND_NULL(item->src);
176 FREE_AND_NULL(item->dst);
180 item->exact_sha1 = 0;
183 void refspec_init(struct refspec *rs, int fetch)
185 memset(rs, 0, sizeof(*rs));
189 static void refspec_append_nodup(struct refspec *rs, char *refspec)
191 struct refspec_item item;
193 refspec_item_init_or_die(&item, refspec, rs->fetch);
195 ALLOC_GROW(rs->items, rs->nr + 1, rs->alloc);
196 rs->items[rs->nr++] = item;
198 ALLOC_GROW(rs->raw, rs->raw_nr + 1, rs->raw_alloc);
199 rs->raw[rs->raw_nr++] = refspec;
202 void refspec_append(struct refspec *rs, const char *refspec)
204 refspec_append_nodup(rs, xstrdup(refspec));
207 void refspec_appendf(struct refspec *rs, const char *fmt, ...)
212 refspec_append_nodup(rs, xstrvfmt(fmt, ap));
216 void refspec_appendn(struct refspec *rs, const char **refspecs, int nr)
219 for (i = 0; i < nr; i++)
220 refspec_append(rs, refspecs[i]);
223 void refspec_clear(struct refspec *rs)
227 for (i = 0; i < rs->nr; i++)
228 refspec_item_clear(&rs->items[i]);
230 FREE_AND_NULL(rs->items);
234 for (i = 0; i < rs->raw_nr; i++)
235 free((char *)rs->raw[i]);
236 FREE_AND_NULL(rs->raw);
243 int valid_fetch_refspec(const char *fetch_refspec_str)
245 struct refspec_item refspec;
246 int ret = refspec_item_init(&refspec, fetch_refspec_str, REFSPEC_FETCH);
247 refspec_item_clear(&refspec);
251 int valid_remote_name(const char *name)
254 struct strbuf refspec = STRBUF_INIT;
255 strbuf_addf(&refspec, "refs/heads/test:refs/remotes/%s/test", name);
256 result = valid_fetch_refspec(refspec.buf);
257 strbuf_release(&refspec);
261 void refspec_ref_prefixes(const struct refspec *rs,
262 struct strvec *ref_prefixes)
265 for (i = 0; i < rs->nr; i++) {
266 const struct refspec_item *item = &rs->items[i];
267 const char *prefix = NULL;
269 if (item->exact_sha1 || item->negative)
271 if (rs->fetch == REFSPEC_FETCH)
275 else if (item->src && !item->exact_sha1)
282 const char *glob = strchr(prefix, '*');
283 strvec_pushf(ref_prefixes, "%.*s",
284 (int)(glob - prefix),
287 expand_ref_prefix(ref_prefixes, prefix);