diff options
| -rw-r--r-- | builtin/describe.c | 49 | ||||
| -rwxr-xr-x | t/t6120-describe.sh | 8 | ||||
| -rw-r--r-- | tag.c | 71 | ||||
| -rw-r--r-- | tag.h | 2 |
4 files changed, 97 insertions, 33 deletions
diff --git a/builtin/describe.c b/builtin/describe.c index 71be2a9..43caff2 100644 --- a/builtin/describe.c +++ b/builtin/describe.c @@ -35,7 +35,8 @@ static const char *diff_index_args[] = { struct commit_name { struct tag *tag; - int prio; /* annotated tag = 2, tag = 1, head = 0 */ + unsigned prio:2; /* annotated tag = 2, tag = 1, head = 0 */ + unsigned name_checked:1; unsigned char sha1[20]; char path[FLEX_ARRAY]; /* more */ }; @@ -43,18 +44,53 @@ static const char *prio_names[] = { "head", "lightweight", "annotated", }; +static int replace_name(struct commit_name *e, + int prio, + const unsigned char *sha1, + struct tag **tag) +{ + if (!e || e->prio < prio) + return 1; + + if (e->prio == 2 && prio == 2) { + /* Multiple annotated tags point to the same commit. + * Select one to keep based upon their tagger date. + */ + struct tag *t; + + if (!e->tag) { + t = lookup_tag(e->sha1); + if (!t || parse_tag(t)) + return 1; + e->tag = t; + } + + t = lookup_tag(sha1); + if (!t || parse_tag(t)) + return 0; + *tag = t; + + if (e->tag->date < t->date) + return 1; + } + + return 0; +} + static void add_to_known_names(const char *path, struct commit *commit, int prio, const unsigned char *sha1) { struct commit_name *e = commit->util; - if (!e || e->prio < prio) { + struct tag *tag = NULL; + if (replace_name(e, prio, sha1, &tag)) { size_t len = strlen(path)+1; free(e); e = xmalloc(sizeof(struct commit_name) + len); - e->tag = NULL; + e->tag = tag; e->prio = prio; + e->name_checked = 0; hashcpy(e->sha1, sha1); memcpy(e->path, path, len); commit->util = e; @@ -165,10 +201,15 @@ 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) + if (!n->tag || parse_tag(n->tag)) die("annotated tag %s not available", n->path); + } + if (n->tag && !n->name_checked) { + if (!n->tag->tag) + die("annotated tag %s has no embedded name", n->path); if (strcmp(n->tag->tag, all ? n->path + 5 : n->path)) warning("tag '%s' is really '%s' here", n->tag->tag, n->path); + n->name_checked = 1; } if (n->tag) diff --git a/t/t6120-describe.sh b/t/t6120-describe.sh index 065dead..876d1ab 100755 --- a/t/t6120-describe.sh +++ b/t/t6120-describe.sh @@ -8,7 +8,7 @@ test_description='test describe o----o----o----o----o----. / \ A c / .------------o---o---o - D e + D,R e ' . ./test-lib.sh @@ -68,6 +68,8 @@ test_expect_success setup ' echo D >another && git add another && git commit -m D && test_tick && git tag -a -m D D && + test_tick && + git tag -a -m R R && test_tick && echo DD >another && git commit -a -m another && @@ -89,10 +91,10 @@ test_expect_success setup ' check_describe A-* HEAD check_describe A-* HEAD^ -check_describe D-* HEAD^^ +check_describe R-* HEAD^^ check_describe A-* HEAD^^2 check_describe B HEAD^^2^ -check_describe D-* HEAD^^^ +check_describe R-* HEAD^^^ check_describe c-* --tags HEAD check_describe c-* --tags HEAD^ @@ -36,43 +36,50 @@ struct tag *lookup_tag(const unsigned char *sha1) return (struct tag *) obj; } +static unsigned long parse_tag_date(const char *buf, const char *tail) +{ + const char *dateptr; + + while (buf < tail && *buf++ != '>') + /* nada */; + if (buf >= tail) + return 0; + dateptr = buf; + while (buf < tail && *buf++ != '\n') + /* nada */; + if (buf >= tail) + return 0; + /* dateptr < buf && buf[-1] == '\n', so strtoul will stop at buf-1 */ + return strtoul(dateptr, NULL, 10); +} + int parse_tag_buffer(struct tag *item, void *data, unsigned long size) { - int typelen, taglen; unsigned char sha1[20]; - const char *type_line, *tag_line, *sig_line; char type[20]; - const char *start = data; + const char *bufptr = data; + const char *tail = bufptr + size; + const char *nl; - if (item->object.parsed) - return 0; - item->object.parsed = 1; + if (item->object.parsed) + return 0; + item->object.parsed = 1; if (size < 64) return -1; - if (memcmp("object ", data, 7) || get_sha1_hex((char *) data + 7, sha1)) + if (memcmp("object ", bufptr, 7) || get_sha1_hex(bufptr + 7, sha1) || bufptr[47] != '\n') return -1; + bufptr += 48; /* "object " + sha1 + "\n" */ - type_line = (char *) data + 48; - if (memcmp("\ntype ", type_line-1, 6)) + if (prefixcmp(bufptr, "type ")) return -1; - - tag_line = memchr(type_line, '\n', size - (type_line - start)); - if (!tag_line || memcmp("tag ", ++tag_line, 4)) + bufptr += 5; + nl = memchr(bufptr, '\n', tail - bufptr); + if (!nl || sizeof(type) <= (nl - bufptr)) return -1; - - sig_line = memchr(tag_line, '\n', size - (tag_line - start)); - if (!sig_line) - return -1; - sig_line++; - - typelen = tag_line - type_line - strlen("type \n"); - if (typelen >= 20) - return -1; - memcpy(type, type_line + 5, typelen); - type[typelen] = '\0'; - taglen = sig_line - tag_line - strlen("tag \n"); - item->tag = xmemdupz(tag_line + 4, taglen); + strncpy(type, bufptr, nl - bufptr); + type[nl - bufptr] = '\0'; + bufptr = nl + 1; if (!strcmp(type, blob_type)) { item->tagged = &lookup_blob(sha1)->object; @@ -87,6 +94,20 @@ int parse_tag_buffer(struct tag *item, void *data, unsigned long size) item->tagged = NULL; } + if (prefixcmp(bufptr, "tag ")) + return -1; + bufptr += 4; + nl = memchr(bufptr, '\n', tail - bufptr); + if (!nl) + return -1; + item->tag = xmemdupz(bufptr, nl - bufptr); + bufptr = nl + 1; + + if (!prefixcmp(bufptr, "tagger ")) + item->date = parse_tag_date(bufptr, tail); + else + item->date = 0; + return 0; } @@ -9,7 +9,7 @@ struct tag { struct object object; struct object *tagged; char *tag; - char *signature; /* not actually implemented */ + unsigned long date; }; extern struct tag *lookup_tag(const unsigned char *sha1); |