X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=builtin-describe.c;h=df554b30af3ddcb4d0141838c06f82d433cbf3a4;hb=208f689610e524ce9858f9d28635f7fea51b8d96;hp=05e309f5ad15f9a6f85df34322bb59152b4e37be;hpb=5372715ed268b190b022a12579767816ea6738ae;p=git.git diff --git a/builtin-describe.c b/builtin-describe.c index 05e309f5a..d2cfb1b08 100644 --- a/builtin-describe.c +++ b/builtin-describe.c @@ -10,19 +10,23 @@ #define MAX_TAGS (FLAG_BITS - 1) static const char * const describe_usage[] = { - "git-describe [options] *", + "git describe [options] *", 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 all; /* Any valid ref can be used */ +static int tags; /* Allow lightweight tags */ +static int longformat; static int abbrev = DEFAULT_ABBREV; static int max_candidates = 10; -const char *pattern = NULL; +static const char *pattern; +static int always; struct commit_name { + struct tag *tag; int prio; /* annotated tag = 2, tag = 1, head = 0 */ + unsigned char sha1[20]; char path[FLEX_ARRAY]; /* more */ }; static const char *prio_names[] = { @@ -31,14 +35,17 @@ static const char *prio_names[] = { static void add_to_known_names(const char *path, struct commit *commit, - int prio) + int prio, + const unsigned char *sha1) { struct commit_name *e = commit->util; if (!e || e->prio < prio) { size_t len = strlen(path)+1; free(e); e = xmalloc(sizeof(struct commit_name) + len); + e->tag = NULL; e->prio = prio; + hashcpy(e->sha1, sha1); memcpy(e->path, path, len); commit->util = e; } @@ -73,12 +80,13 @@ static int get_name(const char *path, const unsigned char *sha1, int flag, void * Otherwise only annotated tags are used. */ if (might_be_tag) { - if (is_tag) { + if (is_tag) prio = 2; - if (pattern && fnmatch(pattern, path + 10, 0)) - prio = 0; - } else + else prio = 1; + + if (pattern && fnmatch(pattern, path + 10, 0)) + prio = 0; } else prio = 0; @@ -89,7 +97,7 @@ static int get_name(const char *path, const unsigned char *sha1, int flag, void if (!tags && prio < 2) return 0; } - add_to_known_names(all ? path + 5 : path + 10, commit, prio); + add_to_known_names(all ? path + 5 : path + 10, commit, prio, sha1); return 0; } @@ -104,8 +112,6 @@ static int compare_pt(const void *a_, const void *b_) { struct possible_tag *a = (struct possible_tag *)a_; struct possible_tag *b = (struct possible_tag *)b_; - if (a->name->prio != b->name->prio) - return b->name->prio - a->name->prio; if (a->depth != b->depth) return a->depth - b->depth; if (a->found_order != b->found_order) @@ -146,6 +152,27 @@ static unsigned long finish_depth_computation( return seen_commits; } +static void display_name(struct commit_name *n) +{ + if (n->prio == 2 && !n->tag) { + n->tag = lookup_tag(n->sha1); + if (!n->tag || parse_tag(n->tag) || !n->tag->tag) + die("annotated tag %s not available", n->path); + if (strcmp(n->tag->tag, n->path)) + warning("tag '%s' is really '%s' here", n->tag->tag, n->path); + } + + if (n->tag) + printf("%s", n->tag->tag); + else + printf("%s", n->path); +} + +static void show_suffix(int depth, const unsigned char *sha1) +{ + printf("-%d-g%s", depth, find_unique_abbrev(sha1, abbrev)); +} + static void describe(const char *arg, int last_one) { unsigned char sha1[20]; @@ -170,7 +197,13 @@ static void describe(const char *arg, int last_one) n = cmit->util; if (n) { - printf("%s\n", n->path); + /* + * Exact match to an existing ref. + */ + display_name(n); + if (longformat) + show_suffix(0, n->tag ? n->tag->tagged->sha1 : sha1); + printf("\n"); return; } @@ -224,8 +257,14 @@ static void describe(const char *arg, int last_one) } } - if (!match_cnt) - die("cannot describe '%s'", sha1_to_hex(cmit->object.sha1)); + if (!match_cnt) { + const unsigned char *sha1 = cmit->object.sha1; + if (always) { + printf("%s\n", find_unique_abbrev(sha1, abbrev)); + return; + } + die("cannot describe '%s'", sha1_to_hex(sha1)); + } qsort(all_matches, match_cnt, sizeof(all_matches[0]), compare_pt); @@ -252,12 +291,11 @@ static void describe(const char *arg, int last_one) sha1_to_hex(gave_up_on->object.sha1)); } } - if (abbrev == 0) - printf("%s\n", all_matches[0].name->path ); - else - printf("%s-%d-g%s\n", all_matches[0].name->path, - all_matches[0].depth, - find_unique_abbrev(cmit->object.sha1, abbrev)); + + display_name(all_matches[0].name); + if (abbrev) + show_suffix(all_matches[0].depth, cmit->object.sha1); + printf("\n"); if (!last_one) clear_commit_marks(cmit, -1); @@ -271,6 +309,7 @@ int cmd_describe(int argc, const char **argv, const char *prefix) 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_BOOLEAN(0, "long", &longformat, "always use long format"), OPT__ABBREV(&abbrev), OPT_SET_INT(0, "exact-match", &max_candidates, "only output exact matches", 0), @@ -278,6 +317,8 @@ int cmd_describe(int argc, const char **argv, const char *prefix) "consider most recent tags (default: 10)"), OPT_STRING(0, "match", &pattern, "pattern", "only consider tags matching "), + OPT_BOOLEAN(0, "always", &always, + "show abbreviated commit object as fallback"), OPT_END(), }; @@ -289,12 +330,17 @@ int cmd_describe(int argc, const char **argv, const char *prefix) save_commit_buffer = 0; + if (longformat && abbrev == 0) + die("--long is incompatible with --abbrev=0"); + if (contains) { - const char **args = xmalloc((6 + argc) * sizeof(char*)); + const char **args = xmalloc((7 + argc) * sizeof(char*)); int i = 0; args[i++] = "name-rev"; args[i++] = "--name-only"; args[i++] = "--no-undefined"; + if (always) + args[i++] = "--always"; if (!all) { args[i++] = "--tags"; if (pattern) {