diff options
| -rw-r--r-- | Documentation/git-tag.txt | 6 | ||||
| -rw-r--r-- | builtin/tag.c | 50 | ||||
| -rwxr-xr-x | t/t7004-tag.sh | 39 |
3 files changed, 93 insertions, 2 deletions
diff --git a/Documentation/git-tag.txt b/Documentation/git-tag.txt index 53ff5f6cf7..8d32b9a814 100644 --- a/Documentation/git-tag.txt +++ b/Documentation/git-tag.txt @@ -12,7 +12,8 @@ SYNOPSIS 'git tag' [-a | -s | -u <key-id>] [-f] [-m <msg> | -F <file>] <tagname> [<commit> | <object>] 'git tag' -d <tagname>... -'git tag' [-n[<num>]] -l [--contains <commit>] [<pattern>...] +'git tag' [-n[<num>]] -l [--contains <commit>] [--points-at <object>] + [<pattern>...] 'git tag' -v <tagname>... DESCRIPTION @@ -86,6 +87,9 @@ OPTIONS --contains <commit>:: Only list tags which contain the specified commit. +--points-at <object>:: + Only list tags of the given object. + -m <msg>:: --message=<msg>:: Use the given tag message (instead of prompting). diff --git a/builtin/tag.c b/builtin/tag.c index 31f02e80f6..27c35571ab 100644 --- a/builtin/tag.c +++ b/builtin/tag.c @@ -15,11 +15,13 @@ #include "diff.h" #include "revision.h" #include "gpg-interface.h" +#include "sha1-array.h" static const char * const git_tag_usage[] = { "git tag [-a|-s|-u <key-id>] [-f] [-m <msg>|-F <file>] <tagname> [<head>]", "git tag -d <tagname>...", - "git tag -l [-n[<num>]] [<pattern>...]", + "git tag -l [-n[<num>]] [--contains <commit>] [--points-at <object>] " + "\n\t\t[<pattern>...]", "git tag -v <tagname>...", NULL }; @@ -30,6 +32,8 @@ struct tag_filter { struct commit_list *with_commit; }; +static struct sha1_array points_at; + static int match_pattern(const char **patterns, const char *ref) { /* no pattern means match everything */ @@ -41,6 +45,24 @@ static int match_pattern(const char **patterns, const char *ref) return 0; } +static const unsigned char *match_points_at(const char *refname, + const unsigned char *sha1) +{ + const unsigned char *tagged_sha1 = NULL; + struct object *obj; + + if (sha1_array_lookup(&points_at, sha1) >= 0) + return sha1; + obj = parse_object(sha1); + if (!obj) + die(_("malformed object at '%s'"), refname); + if (obj->type == OBJ_TAG) + tagged_sha1 = ((struct tag *)obj)->tagged->sha1; + if (tagged_sha1 && sha1_array_lookup(&points_at, tagged_sha1) >= 0) + return tagged_sha1; + return NULL; +} + static int in_commit_list(const struct commit_list *want, struct commit *c) { for (; want; want = want->next) @@ -105,6 +127,9 @@ static int show_reference(const char *refname, const unsigned char *sha1, return 0; } + if (points_at.nr && !match_points_at(refname, sha1)) + return 0; + if (!filter->lines) { printf("%s\n", refname); return 0; @@ -375,6 +400,23 @@ static int strbuf_check_tag_ref(struct strbuf *sb, const char *name) return check_refname_format(sb->buf, 0); } +int parse_opt_points_at(const struct option *opt __attribute__ ((unused)), + const char *arg, int unset) +{ + unsigned char sha1[20]; + + if (unset) { + sha1_array_clear(&points_at); + return 0; + } + if (!arg) + return error(_("switch 'points-at' requires an object")); + if (get_sha1(arg, sha1)) + return error(_("malformed object name '%s'"), arg); + sha1_array_append(&points_at, sha1); + return 0; +} + int cmd_tag(int argc, const char **argv, const char *prefix) { struct strbuf buf = STRBUF_INIT; @@ -417,6 +459,10 @@ int cmd_tag(int argc, const char **argv, const char *prefix) PARSE_OPT_LASTARG_DEFAULT, parse_opt_with_commit, (intptr_t)"HEAD", }, + { + OPTION_CALLBACK, 0, "points-at", NULL, "object", + "print only tags of the object", 0, parse_opt_points_at + }, OPT_END() }; @@ -448,6 +494,8 @@ int cmd_tag(int argc, const char **argv, const char *prefix) die(_("-n option is only allowed with -l.")); if (with_commit) die(_("--contains option is only allowed with -l.")); + if (points_at.nr) + die(_("--points-at option is only allowed with -l.")); if (delete) return for_each_tag_name(argv, delete_tag); if (verify) diff --git a/t/t7004-tag.sh b/t/t7004-tag.sh index e93ac73829..f61e3987ee 100755 --- a/t/t7004-tag.sh +++ b/t/t7004-tag.sh @@ -1269,4 +1269,43 @@ test_expect_success 'mixing incompatibles modes and options is forbidden' ' test_must_fail git tag -v -s ' +# check points-at + +test_expect_success '--points-at cannot be used in non-list mode' ' + test_must_fail git tag --points-at=v4.0 foo +' + +test_expect_success '--points-at finds lightweight tags' ' + echo v4.0 >expect && + git tag --points-at v4.0 >actual && + test_cmp expect actual +' + +test_expect_success '--points-at finds annotated tags of commits' ' + git tag -m "v4.0, annotated" annotated-v4.0 v4.0 && + echo annotated-v4.0 >expect && + git tag -l --points-at v4.0 "annotated*" >actual && + test_cmp expect actual +' + +test_expect_success '--points-at finds annotated tags of tags' ' + git tag -m "describing the v4.0 tag object" \ + annotated-again-v4.0 annotated-v4.0 && + cat >expect <<-\EOF && + annotated-again-v4.0 + annotated-v4.0 + EOF + git tag --points-at=annotated-v4.0 >actual && + test_cmp expect actual +' + +test_expect_success 'multiple --points-at are OR-ed together' ' + cat >expect <<-\EOF && + v2.0 + v3.0 + EOF + git tag --points-at=v2.0 --points-at=v3.0 >actual && + test_cmp expect actual +' + test_done |