name-rev: introduce the --refs=<pattern> option

Instead of (or, in addition to) --tags, to use only tags for naming,
you can now use --refs=<pattern> to specify a shell glob pattern
which the refs must match to be used for naming.

Example:

	$ git name-rev --refs=*v1* 33db5f4d
	33db5f4d tags/v1.0rc1^0~1593

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/Documentation/git-name-rev.txt b/Documentation/git-name-rev.txt
index 37fbf66..5b5c4c8 100644 (file)
--- a/Documentation/git-name-rev.txt
+++ b/Documentation/git-name-rev.txt
@@ -8,7 +8,8 @@ git-name-rev - Find symbolic names for given revs
 
 SYNOPSIS
 --------
-'git-name-rev' [--tags] ( --all | --stdin | <committish>... )
+'git-name-rev' [--tags] [--refs=<pattern>]
+              ( --all | --stdin | <committish>... )
 
 DESCRIPTION
 -----------
@@ -22,6 +23,9 @@ OPTIONS
 --tags::
        Do not use branch names, but only tags to name the commits
 
+--refs=<pattern>::
+       Only use refs whose names match a given shell pattern.
+
 --all::
        List all commits reachable from all refs
 

diff --git a/builtin-name-rev.c b/builtin-name-rev.c
index b4f15cc..36f1ba6 100644 (file)
--- a/builtin-name-rev.c
+++ b/builtin-name-rev.c
@@ -5,7 +5,7 @@
 #include "refs.h"
 
 static const char name_rev_usage[] =
-       "git-name-rev [--tags] ( --all | --stdin | committish [committish...] )\n";
+       "git-name-rev [--tags | --refs=<pattern>] ( --all | --stdin | committish [committish...] )\n";
 
 typedef struct rev_name {
        const char *tip_name;
@@ -74,13 +74,21 @@ copy_data:
        }
 }
 
+struct name_ref_data {
+       int tags_only;
+       const char *ref_filter;
+};
+
 static int name_ref(const char *path, const unsigned char *sha1, int flags, void *cb_data)
 {
        struct object *o = parse_object(sha1);
-       int tags_only = *(int*)cb_data;
+       struct name_ref_data *data = cb_data;
        int deref = 0;
 
-       if (tags_only && strncmp(path, "refs/tags/", 10))
+       if (data->tags_only && strncmp(path, "refs/tags/", 10))
+               return 0;
+
+       if (data->ref_filter && fnmatch(data->ref_filter, path, 0))
                return 0;
 
        while (o && o->type == OBJ_TAG) {
@@ -129,7 +137,7 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 {
        struct object_array revs = { 0, 0, NULL };
        int as_is = 0, all = 0, transform_stdin = 0;
-       int tags_only = 0;
+       struct name_ref_data data = { 0, NULL };
 
        git_config(git_default_config);
 
@@ -146,7 +154,10 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
                                as_is = 1;
                                continue;
                        } else if (!strcmp(*argv, "--tags")) {
-                               tags_only = 1;
+                               data.tags_only = 1;
+                               continue;
+                       } else  if (!strncmp(*argv, "--refs=", 7)) {
+                               data.ref_filter = *argv + 7;
                                continue;
                        } else if (!strcmp(*argv, "--all")) {
                                if (argc > 1)
@@ -185,7 +196,7 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
                add_object_array((struct object *)commit, *argv, &revs);
        }
 
-       for_each_ref(name_ref, &tags_only);
+       for_each_ref(name_ref, &data);
 
        if (transform_stdin) {
                char buffer[2048];