#include "tag.h"
#include "refs.h"
#include "builtin.h"
+#include "exec_cmd.h"
+#include "parse-options.h"
#define SEEN (1u<<0)
#define MAX_TAGS (FLAG_BITS - 1)
-static const char describe_usage[] =
-"git-describe [--all] [--tags] [--abbrev=<n>] <committish>*";
+static const char * const describe_usage[] = {
+ "git-describe [options] <committish>*",
+ NULL
+};
static int debug; /* Display lots of verbose info */
static int all; /* Default to annotated tags only */
static int tags; /* But allow any tags if --tags is specified */
static int abbrev = DEFAULT_ABBREV;
static int max_candidates = 10;
+const char *pattern = NULL;
struct commit_name {
int prio; /* annotated tag = 2, tag = 1, head = 0 */
* If --tags, then any tags are used.
* Otherwise only annotated tags are used.
*/
- if (!strncmp(path, "refs/tags/", 10)) {
- if (object->type == OBJ_TAG)
+ if (!prefixcmp(path, "refs/tags/")) {
+ if (object->type == OBJ_TAG) {
prio = 2;
- else
+ if (pattern && fnmatch(pattern, path + 10, 0))
+ prio = 0;
+ } else
prio = 1;
}
else
return 0;
}
+static unsigned long finish_depth_computation(
+ struct commit_list **list,
+ struct possible_tag *best)
+{
+ unsigned long seen_commits = 0;
+ while (*list) {
+ struct commit *c = pop_commit(list);
+ struct commit_list *parents = c->parents;
+ seen_commits++;
+ if (c->object.flags & best->flag_within) {
+ struct commit_list *a = *list;
+ while (a) {
+ struct commit *i = a->item;
+ if (!(i->object.flags & best->flag_within))
+ break;
+ a = a->next;
+ }
+ if (!a)
+ break;
+ } else
+ best->depth++;
+ while (parents) {
+ struct commit *p = parents->item;
+ parse_commit(p);
+ if (!(p->object.flags & SEEN))
+ insert_by_date(p, list);
+ p->object.flags |= c->object.flags;
+ parents = parents->next;
+ }
+ }
+ return seen_commits;
+}
+
static void describe(const char *arg, int last_one)
{
unsigned char sha1[20];
parents = parents->next;
}
}
- free_commit_list(list);
if (!match_cnt)
die("cannot describe '%s'", sha1_to_hex(cmit->object.sha1));
qsort(all_matches, match_cnt, sizeof(all_matches[0]), compare_pt);
+
+ if (gave_up_on) {
+ insert_by_date(gave_up_on, &list);
+ seen_commits--;
+ }
+ seen_commits += finish_depth_computation(&list, &all_matches[0]);
+ free_commit_list(list);
+
if (debug) {
for (cur_match = 0; cur_match < match_cnt; cur_match++) {
struct possible_tag *t = &all_matches[cur_match];
if (abbrev == 0)
printf("%s\n", all_matches[0].name->path );
else
- printf("%s-g%s\n", all_matches[0].name->path,
- find_unique_abbrev(cmit->object.sha1, abbrev));
+ printf("%s-%d-g%s\n", all_matches[0].name->path,
+ all_matches[0].depth,
+ find_unique_abbrev(cmit->object.sha1, abbrev));
if (!last_one)
clear_commit_marks(cmit, -1);
int cmd_describe(int argc, const char **argv, const char *prefix)
{
- int i;
+ int contains = 0;
+ struct option options[] = {
+ OPT_BOOLEAN(0, "contains", &contains, "find the tag that comes after the commit"),
+ OPT_BOOLEAN(0, "debug", &debug, "debug search strategy on stderr"),
+ OPT_BOOLEAN(0, "all", &all, "use any ref in .git/refs"),
+ OPT_BOOLEAN(0, "tags", &tags, "use any tag in .git/refs/tags"),
+ OPT__ABBREV(&abbrev),
+ OPT_INTEGER(0, "candidates", &max_candidates,
+ "consider <n> most recent tags (default: 10)"),
+ OPT_STRING(0, "match", &pattern, "pattern",
+ "only consider tags matching <pattern>"),
+ OPT_END(),
+ };
- for (i = 1; i < argc; i++) {
- const char *arg = argv[i];
+ argc = parse_options(argc, argv, options, describe_usage, 0);
+ if (max_candidates < 1)
+ max_candidates = 1;
+ else if (max_candidates > MAX_TAGS)
+ max_candidates = MAX_TAGS;
- if (*arg != '-')
- break;
- else if (!strcmp(arg, "--debug"))
- debug = 1;
- else if (!strcmp(arg, "--all"))
- all = 1;
- else if (!strcmp(arg, "--tags"))
- tags = 1;
- else if (!strncmp(arg, "--abbrev=", 9)) {
- abbrev = strtoul(arg + 9, NULL, 10);
- if (abbrev != 0 && (abbrev < MINIMUM_ABBREV || 40 < abbrev))
- abbrev = DEFAULT_ABBREV;
- }
- else if (!strncmp(arg, "--candidates=", 13)) {
- max_candidates = strtoul(arg + 13, NULL, 10);
- if (max_candidates < 1)
- max_candidates = 1;
- else if (max_candidates > MAX_TAGS)
- max_candidates = MAX_TAGS;
+ save_commit_buffer = 0;
+
+ if (contains) {
+ const char **args = xmalloc((6 + argc) * sizeof(char*));
+ int i = 0;
+ args[i++] = "name-rev";
+ args[i++] = "--name-only";
+ args[i++] = "--no-undefined";
+ if (!all) {
+ args[i++] = "--tags";
+ if (pattern) {
+ char *s = xmalloc(strlen("--refs=refs/tags/") + strlen(pattern) + 1);
+ sprintf(s, "--refs=refs/tags/%s", pattern);
+ args[i++] = s;
+ }
}
- else
- usage(describe_usage);
+ memcpy(args + i, argv, argc * sizeof(char*));
+ args[i + argc] = NULL;
+ return cmd_name_rev(i + argc, args, prefix);
}
- save_commit_buffer = 0;
-
- if (argc <= i)
+ if (argc == 0) {
describe("HEAD", 1);
- else
- while (i < argc) {
- describe(argv[i], (i == argc - 1));
- i++;
+ } else {
+ while (argc-- > 0) {
+ describe(*argv++, argc == 0);
}
-
+ }
return 0;
}