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ls-remote: add support for showing symrefs

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Sometimes it's useful to know the main branch of a git repository
without actually downloading the repository.  This can be done by
looking at the symrefs stored in the remote repository.  Currently git
doesn't provide a simple way to show the symrefs stored on the remote
repository, even though the information is available.  Add a --symref
command line argument to the ls-remote command, which shows the symrefs
in the remote repository.

While there, replace a literal tab in the format string with \t to make
it more obvious to the reader.

Suggested-by: pedro rijo <pedrorijo91@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Thomas Gummerer 2016-01-19 00:20:50 +01:00 committed by Junio C Hamano
parent ba5f28bf79
commit 99c08d4eb2
3 changed files with 61 additions and 3 deletions
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9
Documentation/git-ls-remote.txt
View File

@ -10,7 +10,8 @@ SYNOPSIS
--------
[verse]
'git ls-remote' [--heads] [--tags] [--refs] [--upload-pack=<exec>]
[-q | --quiet] [--exit-code] [--get-url] [<repository> [<refs>...]]
[-q | --quiet] [--exit-code] [--get-url]
[--symref] [<repository> [<refs>...]]
DESCRIPTION
-----------
@ -53,6 +54,12 @@ OPTIONS
"url.<base>.insteadOf" config setting (See linkgit:git-config[1]) and
exit without talking to the remote.
--symref::
In addition to the object pointed by it, show the underlying
ref pointed by it when showing a symbolic ref. Currently,
upload-pack only shows the symref HEAD, so it will be the only
one shown by ls-remote.
<repository>::
The "remote" repository to query. This parameter can be
either a URL or the name of a remote (see the GIT URLS and

10
builtin/ls-remote.c
View File

@ -5,7 +5,8 @@
static const char * const ls_remote_usage[] = {
N_("git ls-remote [--heads] [--tags] [--refs] [--upload-pack=<exec>]\n"
" [-q | --quiet] [--exit-code] [--get-url] [<repository> [<refs>...]]"),
" [-q | --quiet] [--exit-code] [--get-url]\n"
" [--symref] [<repository> [<refs>...]]"),
NULL
};
@ -37,6 +38,7 @@ int cmd_ls_remote(int argc, const char **argv, const char *prefix)
int get_url = 0;
int quiet = 0;
int status = 0;
int show_symref_target = 0;
const char *uploadpack = NULL;
const char **pattern = NULL;
@ -58,6 +60,8 @@ int cmd_ls_remote(int argc, const char **argv, const char *prefix)
N_("take url.<base>.insteadOf into account")),
OPT_SET_INT(0, "exit-code", &status,
N_("exit with exit code 2 if no matching refs are found"), 2),
OPT_BOOL(0, "symref", &show_symref_target,
N_("show underlying ref in addition to the object pointed by it")),
OPT_END()
};
@ -101,7 +105,9 @@ int cmd_ls_remote(int argc, const char **argv, const char *prefix)
continue;
if (!tail_match(pattern, ref->name))
continue;
printf("%s %s\n", oid_to_hex(&ref->old_oid), ref->name);
if (show_symref_target && ref->symref)
printf("ref: %s\t%s\n", ref->symref, ref->name);
printf("%s\t%s\n", oid_to_hex(&ref->old_oid), ref->name);
status = 0; /* we found something */
}
return status;

45
t/t5512-ls-remote.sh
View File

@ -163,4 +163,49 @@ test_expect_success 'overrides work between mixed transfer/upload-pack hideRefs'
grep refs/tags/magic actual
'
test_expect_success 'ls-remote --symref' '
cat >expect <<-\EOF &&
ref: refs/heads/master HEAD
1bd44cb9d13204b0fe1958db0082f5028a16eb3a HEAD
1bd44cb9d13204b0fe1958db0082f5028a16eb3a refs/heads/master
1bd44cb9d13204b0fe1958db0082f5028a16eb3a refs/remotes/origin/HEAD
1bd44cb9d13204b0fe1958db0082f5028a16eb3a refs/remotes/origin/master
1bd44cb9d13204b0fe1958db0082f5028a16eb3a refs/tags/mark
EOF
git ls-remote --symref >actual &&
test_cmp expect actual
'
test_expect_success 'ls-remote with filtered symref (refname)' '
cat >expect <<-\EOF &&
ref: refs/heads/master HEAD
1bd44cb9d13204b0fe1958db0082f5028a16eb3a HEAD
EOF
git ls-remote --symref . HEAD >actual &&
test_cmp expect actual
'
test_expect_failure 'ls-remote with filtered symref (--heads)' '
git symbolic-ref refs/heads/foo refs/tags/mark &&
cat >expect <<-\EOF &&
ref: refs/tags/mark refs/heads/foo
1bd44cb9d13204b0fe1958db0082f5028a16eb3a refs/heads/foo
1bd44cb9d13204b0fe1958db0082f5028a16eb3a refs/heads/master
EOF
git ls-remote --symref --heads . >actual &&
test_cmp expect actual
'
test_expect_success 'ls-remote --symref omits filtered-out matches' '
cat >expect <<-\EOF &&
1bd44cb9d13204b0fe1958db0082f5028a16eb3a refs/heads/foo
1bd44cb9d13204b0fe1958db0082f5028a16eb3a refs/heads/master
EOF
git ls-remote --symref --heads . >actual &&
test_cmp expect actual &&
git ls-remote --symref . "refs/heads/*" >actual &&
test_cmp expect actual
'
test_done