From: Junio C Hamano Date: Sun, 8 Jan 2006 22:22:19 +0000 (-0800) Subject: GIT 1.1.0 X-Git-Tag: v1.1.0 X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=e415b8f68c5ba6fce646594654684b6fb0677a72;p=git.git GIT 1.1.0 --- 5a2282de13c4da13f979185e652c8a08e2481fd1 diff --cc describe.c index 00fa02adc,000000000..a0180f548 mode 100644,000000..100644 --- a/describe.c +++ b/describe.c @@@ -1,164 -1,0 +1,164 @@@ +#include "cache.h" +#include "commit.h" +#include "tag.h" +#include "refs.h" + +#define SEEN (1u << 0) + +static const char describe_usage[] = +"git-describe [--all] [--tags] [--abbrev=] *"; + +static int all = 0; /* Default to annotated tags only */ +static int tags = 0; /* But allow any tags if --tags is specified */ + +#define DEFAULT_ABBREV 8 /* maybe too many */ +static int abbrev = DEFAULT_ABBREV; + +static int names = 0, allocs = 0; +static struct commit_name { + const struct commit *commit; + int prio; /* annotated tag = 2, tag = 1, head = 0 */ - char path[]; ++ char path[FLEX_ARRAY]; /* more */ +} **name_array = NULL; + +static struct commit_name *match(struct commit *cmit) +{ + int i = names; + struct commit_name **p = name_array; + + while (i-- > 0) { + struct commit_name *n = *p++; + if (n->commit == cmit) + return n; + } + return NULL; +} + +static void add_to_known_names(const char *path, + const struct commit *commit, + int prio) +{ + int idx; + int len = strlen(path)+1; + struct commit_name *name = xmalloc(sizeof(struct commit_name) + len); + + name->commit = commit; + name->prio = prio; + memcpy(name->path, path, len); + idx = names; + if (idx >= allocs) { + allocs = (idx + 50) * 3 / 2; + name_array = xrealloc(name_array, allocs*sizeof(*name_array)); + } + name_array[idx] = name; + names = ++idx; +} + +static int get_name(const char *path, const unsigned char *sha1) +{ + struct commit *commit = lookup_commit_reference_gently(sha1, 1); + struct object *object; + int prio; + + if (!commit) + return 0; + object = parse_object(sha1); + /* If --all, then any refs are used. + * If --tags, then any tags are used. + * Otherwise only annotated tags are used. + */ + if (!strncmp(path, "refs/tags/", 10)) { + if (object->type == tag_type) + prio = 2; + else + prio = 1; + } + else + prio = 0; + + if (!all) { + if (!prio) + return 0; + if (!tags && prio < 2) + return 0; + } + add_to_known_names(all ? path + 5 : path + 10, commit, prio); + return 0; +} + +static int compare_names(const void *_a, const void *_b) +{ + struct commit_name *a = *(struct commit_name **)_a; + struct commit_name *b = *(struct commit_name **)_b; + unsigned long a_date = a->commit->date; + unsigned long b_date = b->commit->date; + + if (a->prio != b->prio) + return b->prio - a->prio; + return (a_date > b_date) ? -1 : (a_date == b_date) ? 0 : 1; +} + +static void describe(struct commit *cmit) +{ + struct commit_list *list; + static int initialized = 0; + struct commit_name *n; + + if (!initialized) { + initialized = 1; + for_each_ref(get_name); + qsort(name_array, names, sizeof(*name_array), compare_names); + } + + n = match(cmit); + if (n) { + printf("%s\n", n->path); + return; + } + + list = NULL; + commit_list_insert(cmit, &list); + while (list) { + struct commit *c = pop_most_recent_commit(&list, SEEN); + n = match(c); + if (n) { + printf("%s-g%s\n", n->path, + find_unique_abbrev(cmit->object.sha1, abbrev)); + break; + } + } + clear_commit_marks(cmit, SEEN); +} + +int main(int argc, char **argv) +{ + int i; + + for (i = 1; i < argc; i++) { + const char *arg = argv[i]; + unsigned char sha1[20]; + struct commit *cmit; + + if (!strcmp(arg, "--all")) { + all = 1; + continue; + } + if (!strcmp(arg, "--tags")) { + tags = 1; + continue; + } + if (!strncmp(arg, "--abbrev=", 9)) { + abbrev = strtoul(arg + 9, NULL, 10); + if (abbrev < 4 || 40 <= abbrev) + abbrev = DEFAULT_ABBREV; + continue; + } + if (get_sha1(arg, sha1) < 0) + usage(describe_usage); + cmit = lookup_commit_reference(sha1); + if (!cmit) + usage(describe_usage); + describe(cmit); + } + return 0; +} diff --cc receive-pack.c index e79de917b,ce986fe11..f847ec2b5 --- a/receive-pack.c +++ b/receive-pack.c @@@ -34,10 -21,10 +34,10 @@@ static void write_head_info(void struct command { struct command *next; - unsigned char updated; + const char *error_string; unsigned char old_sha1[20]; unsigned char new_sha1[20]; - char ref_name[0]; + char ref_name[FLEX_ARRAY]; /* more */ }; static struct command *commands = NULL;