check-ref-format --branch: give Porcelain a way to grok branch shorthand
The command may not be the best place to add this new feature, but $ git check-ref-format --branch "@{-1}" allows Porcelains to figure out what branch you were on before the last branch switching. Signed-off-by: Junio C Hamano <gitster@pobox.com>
Junio C Hamano committed
Mar 21, 2009 at 14:19 UTC
a31dca0393fefae894b7a155ae24000107bcc383
2 files changed
+22
Documentation/git-check-ref-format.txt
+12
@@ -7,7 +7,9 @@ git-check-ref-format - Make sure ref name is well formed
7
8
SYNOPSIS
9
--------
10
+[verse]
11
'git check-ref-format' <refname>
12
+'git check-ref-format' [--branch] <branchname-shorthand>
13
14
DESCRIPTION
15
-----------
@@ -49,6 +51,16 @@ refname expressions (see linkgit:git-rev-parse[1]). Namely:
51
It may also be used to select a specific object such as with
52
'git-cat-file': "git cat-file blob v1.3.3:refs.c".
53
54
+With the `--branch` option, it expands a branch name shorthand and
55
+prints the name of the branch the shorthand refers to.
56
+
57
+EXAMPLE
58
+-------
59
+
60
+git check-ref-format --branch @{-1}::
61
+
62
+Print the name of the previous branch.
63
+
64
65
GIT
66
---
builtin-check-ref-format.c
+10
@@ -5,9 +5,19 @@
5
#include "cache.h"
6
#include "refs.h"
7
#include "builtin.h"
8
+#include "strbuf.h"
9
10
int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
11
{
12
+ if (argc == 3 && !strcmp(argv[1], "--branch")) {
13
+ struct strbuf sb = STRBUF_INIT;
14
+ strbuf_branchname(&sb, argv[2]);
15
+ strbuf_splice(&sb, 0, 0, "refs/heads/", 11);
16
+ if (check_ref_format(sb.buf))
17
+ die("'%s' is not a valid branch name", argv[2]);
18
+ printf("%s\n", sb.buf + 11);
19
+ exit(0);
20
+ }
21
if (argc != 2)
22
usage("git check-ref-format refname");
23
return !!check_ref_format(argv[1]);