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| author | Tom Grennan <tmgrennan@gmail.com> | 2012-02-08 15:03:43 -0800 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2012-02-08 19:59:41 -0800 |
| commit | ae7706b9ac98e3c412d799c910de604347ffce5d (patch) | |
| tree | 849466f3fb04b57a2701081bc60c2b807a693005 /builtin/tag.c | |
| parent | 828ea97de486c1693d6e4f2c7347acb50235a85d (diff) | |
| download | git-ae7706b9ac98e3c412d799c910de604347ffce5d.tar.gz git-ae7706b9ac98e3c412d799c910de604347ffce5d.tar.xz | |
tag: add --points-at list option
This filters the list for tags of the given object.
Example,
john$ git tag v1.0-john v1.0
john$ git tag -l --points-at v1.0
v1.0-john
v1.0
Signed-off-by: Tom Grennan <tmgrennan@gmail.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/tag.c')
| -rw-r--r-- | builtin/tag.c | 50 |
1 files changed, 49 insertions, 1 deletions
diff --git a/builtin/tag.c b/builtin/tag.c index 31f02e80f..27c35571a 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) |