branch: allow pattern arguments

Allow pattern arguments for the list mode just like for git tag -l.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/git-branch.txt b/Documentation/git-branch.txt
index ac278fb..2b8bc84 100644 (file)
--- a/Documentation/git-branch.txt
+++ b/Documentation/git-branch.txt
@@ -10,7 +10,7 @@ SYNOPSIS
 [verse]
 'git branch' [--color[=<when>] | --no-color] [-r | -a]
        [--list] [-v [--abbrev=<length> | --no-abbrev]]
-       [(--merged | --no-merged | --contains) [<commit>]]
+       [(--merged | --no-merged | --contains) [<commit>]] [<pattern>...]
 'git branch' [--set-upstream | --track | --no-track] [-l] [-f] <branchname> [<start-point>]
 'git branch' (-m | -M) [<oldbranch>] <newbranch>
 'git branch' (-d | -D) [-r] <branchname>...
@@ -22,6 +22,9 @@ With no arguments, existing branches are listed and the current branch will
 be highlighted with an asterisk.  Option `-r` causes the remote-tracking
 branches to be listed, and option `-a` shows both. This list mode is also
 activated by the `--list` and `-v` options (see below).
+<pattern> restricts the output to matching branches, the pattern is a shell
+wildcard (i.e., matched using fnmatch(3))
+Multiple patterns may be given; if any of them matches, the tag is shown.
 
 With `--contains`, shows only the branches that contain the named commit
 (in other words, the branches whose tip commits are descendants of the
@@ -112,7 +115,8 @@ OPTIONS
        List both remote-tracking branches and local branches.
 
 --list::
-       Activate the list mode.
+       Activate the list mode. `git branch <pattern>` would try to create a branch,
+       use `git branch --list <pattern>` to list matching branches.
 
 -v::
 --verbose::

diff --git a/builtin/branch.c b/builtin/branch.c
index a10929d..98a420f 100644 (file)
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -260,9 +260,22 @@ static char *resolve_symref(const char *src, const char *prefix)
 
 struct append_ref_cb {
        struct ref_list *ref_list;
+       const char **pattern;
        int ret;
 };
 
+static int match_patterns(const char **pattern, const char *refname)
+{
+       if (!*pattern)
+               return 1; /* no pattern always matches */
+       while (*pattern) {
+               if (!fnmatch(*pattern, refname, 0))
+                       return 1;
+               pattern++;
+       }
+       return 0;
+}
+
 static int append_ref(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
 {
        struct append_ref_cb *cb = (struct append_ref_cb *)(cb_data);
@@ -297,6 +310,9 @@ static int append_ref(const char *refname, const unsigned char *sha1, int flags,
        if ((kind & ref_list->kinds) == 0)
                return 0;
 
+       if (!match_patterns(cb->pattern, refname))
+               return 0;
+
        commit = NULL;
        if (ref_list->verbose || ref_list->with_commit || merge_filter != NO_FILTER) {
                commit = lookup_commit_reference_gently(sha1, 1);
@@ -492,7 +508,7 @@ static void show_detached(struct ref_list *ref_list)
        }
 }
 
-static int print_ref_list(int kinds, int detached, int verbose, int abbrev, struct commit_list *with_commit)
+static int print_ref_list(int kinds, int detached, int verbose, int abbrev, struct commit_list *with_commit, const char **pattern)
 {
        int i;
        struct append_ref_cb cb;
@@ -506,6 +522,7 @@ static int print_ref_list(int kinds, int detached, int verbose, int abbrev, stru
        if (merge_filter != NO_FILTER)
                init_revisions(&ref_list.revs, NULL);
        cb.ref_list = &ref_list;
+       cb.pattern = pattern;
        cb.ret = 0;
        for_each_rawref(append_ref, &cb);
        if (merge_filter != NO_FILTER) {
@@ -523,7 +540,7 @@ static int print_ref_list(int kinds, int detached, int verbose, int abbrev, stru
        qsort(ref_list.list, ref_list.index, sizeof(struct ref_item), ref_cmp);
 
        detached = (detached && (kinds & REF_LOCAL_BRANCH));
-       if (detached)
+       if (detached && match_patterns(pattern, "HEAD"))
                show_detached(&ref_list);
 
        for (i = 0; i < ref_list.index; i++) {
@@ -708,7 +725,8 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
        if (delete)
                return delete_branches(argc, argv, delete > 1, kinds);
        else if (list)
-               return print_ref_list(kinds, detached, verbose, abbrev, with_commit);
+               return print_ref_list(kinds, detached, verbose, abbrev,
+                                     with_commit, argv);
        else if (rename && (argc == 1))
                rename_branch(head, argv[0], rename > 1);
        else if (rename && (argc == 2))

diff --git a/t/t3203-branch-output.sh b/t/t3203-branch-output.sh
index 97d10b1..f2b294b 100755 (executable)
--- a/t/t3203-branch-output.sh
+++ b/t/t3203-branch-output.sh
@@ -38,6 +38,15 @@ test_expect_success 'git branch --list shows local branches' '
 '
 
 cat >expect <<'EOF'
+  branch-one
+  branch-two
+EOF
+test_expect_success 'git branch --list pattern shows matching local branches' '
+       git branch --list branch* >actual &&
+       test_cmp expect actual
+'
+
+cat >expect <<'EOF'
   origin/HEAD -> origin/branch-one
   origin/branch-one
   origin/branch-two
@@ -72,6 +81,16 @@ test_expect_success 'git branch -v shows branch summaries' '
 '
 
 cat >expect <<'EOF'
+two
+one
+EOF
+test_expect_success 'git branch -v pattern shows branch summaries' '
+       git branch -v branch* >tmp &&
+       awk "{print \$NF}" <tmp >actual &&
+       test_cmp expect actual
+'
+
+cat >expect <<'EOF'
 * (no branch)
   branch-one
   branch-two