The new rename subcommand does the followings:
1) Renames the remote.foo configuration section to remote.bar
2) Updates the remote.bar.fetch refspecs
3) Updates the branch.*.remote settings
4) Renames the tracking branches: renames the normal refs and rewrites
the symrefs to point to the new refs.
Signed-off-by: Miklos Vajna <vmiklos@xxxxxxxxxxxxxx>
---
On Fri, Oct 24, 2008 at 04:33:28PM -0700, Junio C Hamano <gitster@xxxxxxxxx> wrote:
> Hmm, remote_get() can read from all three supported places that you
> can define remotes. Could you explain what happens if the old remote
> is read from say $GIT_DIR/remotes/origin and you are renaming it to
> "upstream" with "git remote rename origin upstream"?
Currently it dies because it can't rename config section 'remote.origin'
to 'remote.upstream'.
> I suspect that if you record where you read the configuration from in
> "struct remote" and add necessary code to remove the original when
> rename.old is *not* coming from in-config definition, you would make
> it possible for repositories initialized with older git that has
> either $GIT_DIR/branches/origin or $GIT_DIR/remotes/origin to be
> migrated to the in-config format using "git remote rename origin
> origin".
Yes, that's possible. I think the patch is already large enough that it
would be better to do it as a separate patch, but I like the idea.
One important step is that currently we have to care about the
remote.upstream.fetch variable, but once migration is supported, we have
to pay attention to remote.upstream.url/push as well.
In the meantime here is an updated patch which applies on top of
mv/maint-branch-m-symref. However, it is not meant for 'maint', of
course. :)
The old version did not "rename" (in fact it is not just a rename but it
replaces origin with upstream in the contents) symrefs properly, now the
testcases are extended to check for this, too.
Documentation/git-remote.txt | 6 ++
builtin-remote.c | 153 ++++++++++++++++++++++++++++++++++++++++++
t/t5505-remote.sh | 15 ++++
3 files changed, 174 insertions(+), 0 deletions(-)
diff --git a/Documentation/git-remote.txt b/Documentation/git-remote.txt
index bb99810..7b227b3 100644
--- a/Documentation/git-remote.txt
+++ b/Documentation/git-remote.txt
@@ -11,6 +11,7 @@ SYNOPSIS
[verse]
'git remote' [-v | --verbose]
'git remote add' [-t <branch>] [-m <master>] [-f] [--mirror] <name> <url>
+'git remote rename' <old> <new>
'git remote rm' <name>
'git remote show' [-n] <name>
'git remote prune' [-n | --dry-run] <name>
@@ -61,6 +62,11 @@ only makes sense in bare repositories. If a remote uses mirror
mode, furthermore, `git push` will always behave as if `\--mirror`
was passed.
+'rename'::
+
+Rename the remote named <old> to <new>. All remote tracking branches and
+configuration settings for the remote are updated.
+
'rm'::
Remove the remote named <name>. All remote tracking branches and
diff --git a/builtin-remote.c b/builtin-remote.c
index e396a3a..1ca6cdb 100644
--- a/builtin-remote.c
+++ b/builtin-remote.c
@@ -10,6 +10,7 @@
static const char * const builtin_remote_usage[] = {
"git remote",
"git remote add <name> <url>",
+ "git remote rename <old> <new>",
"git remote rm <name>",
"git remote show <name>",
"git remote prune <name>",
@@ -329,6 +330,156 @@ static int add_branch_for_removal(const char *refname,
return 0;
}
+struct rename_info {
+ const char *old;
+ const char *new;
+ struct string_list *remote_branches;
+};
+
+static int read_remote_branches(const char *refname,
+ const unsigned char *sha1, int flags, void *cb_data)
+{
+ struct rename_info *rename = cb_data;
+ struct strbuf buf = STRBUF_INIT;
+ struct string_list_item *item;
+ int flag;
+ unsigned char orig_sha1[20];
+ const char *symref;
+
+ strbuf_addf(&buf, "refs/remotes/%s", rename->old);
+ if(!prefixcmp(refname, buf.buf)) {
+ item = string_list_append(xstrdup(refname), rename->remote_branches);
+ symref = resolve_ref(refname, orig_sha1, 1, &flag);
+ if (flag & REF_ISSYMREF)
+ item->util = xstrdup(symref);
+ else
+ item->util = NULL;
+ }
+
+ return 0;
+}
+
+static int mv(int argc, const char **argv)
+{
+ struct option options[] = {
+ OPT_END()
+ };
+ struct remote *oldremote, *newremote;
+ struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT;
+ struct string_list remote_branches = { NULL, 0, 0, 0 };
+ struct rename_info rename;
+ int i;
+
+ if (argc != 3)
+ usage_with_options(builtin_remote_usage, options);
+
+ rename.old = argv[1];
+ rename.new = argv[2];
+ rename.remote_branches = &remote_branches;
+
+ oldremote = remote_get(rename.old);
+ if (!oldremote)
+ die("No such remote: %s", rename.old);
+
+ newremote = remote_get(rename.new);
+ if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
+ die("remote %s already exists.", rename.new);
+
+ strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
+ if (!valid_fetch_refspec(buf.buf))
+ die("'%s' is not a valid remote name", rename.new);
+
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "remote.%s", rename.old);
+ strbuf_addf(&buf2, "remote.%s", rename.new);
+ if (git_config_rename_section(buf.buf, buf2.buf) < 1)
+ return error("Could not rename config section '%s' to '%s'",
+ buf.buf, buf2.buf);
+
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "remote.%s.fetch", rename.new);
+ if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
+ return error("Could not remove config section '%s'", buf.buf);
+ for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
+ char *ptr;
+
+ strbuf_reset(&buf2);
+ strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
+ ptr = strstr(buf2.buf, rename.old);
+ if (ptr)
+ strbuf_splice(&buf2, ptr-buf2.buf, strlen(rename.old),
+ rename.new, strlen(rename.new));
+ if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
+ return error("Could not append '%s'", buf.buf);
+ }
+
+ read_branches();
+ for (i = 0; i < branch_list.nr; i++) {
+ struct string_list_item *item = branch_list.items + i;
+ struct branch_info *info = item->util;
+ if (info->remote && !strcmp(info->remote, rename.old)) {
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "branch.%s.remote", item->string);
+ if (git_config_set(buf.buf, rename.new)) {
+ return error("Could not set '%s'", buf.buf);
+ }
+ }
+ }
+
+ /*
+ * First remove symrefs, then rename the rest, finally create
+ * the new symrefs.
+ */
+ for_each_ref(read_remote_branches, &rename);
+ for (i = 0; i < remote_branches.nr; i++) {
+ struct string_list_item *item = remote_branches.items + i;
+ int flag = 0;
+ unsigned char sha1[20];
+ const char *symref;
+
+ symref = resolve_ref(item->string, sha1, 1, &flag);
+ if (!(flag & REF_ISSYMREF))
+ continue;
+ if (delete_ref(item->string, NULL, REF_NODEREF))
+ die("deleting '%s' failed", item->string);
+ }
+ for (i = 0; i < remote_branches.nr; i++) {
+ struct string_list_item *item = remote_branches.items + i;
+
+ if (item->util)
+ continue;
+ strbuf_reset(&buf);
+ strbuf_addstr(&buf, item->string);
+ strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
+ rename.new, strlen(rename.new));
+ strbuf_reset(&buf2);
+ strbuf_addf(&buf2, "remote: renamed %s to %s",
+ item->string, buf.buf);
+ if (rename_ref(item->string, buf.buf, buf2.buf))
+ die("renaming '%s' failed", item->string);
+ }
+ for (i = 0; i < remote_branches.nr; i++) {
+ struct string_list_item *item = remote_branches.items + i;
+
+ if (!item->util)
+ continue;
+ strbuf_reset(&buf);
+ strbuf_addstr(&buf, item->string);
+ strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
+ rename.new, strlen(rename.new));
+ strbuf_reset(&buf2);
+ strbuf_addstr(&buf2, item->util);
+ strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
+ rename.new, strlen(rename.new));
+ strbuf_reset(&buf3);
+ strbuf_addf(&buf3, "remote: renamed %s to %s",
+ item->string, buf.buf);
+ if (create_symref(buf.buf, buf2.buf, buf3.buf))
+ die("creating '%s' failed", buf.buf);
+ }
+ return 0;
+}
+
static int remove_branches(struct string_list *branches)
{
int i, result = 0;
@@ -695,6 +846,8 @@ int cmd_remote(int argc, const char **argv, const char *prefix)
result = show_all();
else if (!strcmp(argv[0], "add"))
result = add(argc, argv);
+ else if (!strcmp(argv[0], "rename"))
+ result = mv(argc, argv);
else if (!strcmp(argv[0], "rm"))
result = rm(argc, argv);
else if (!strcmp(argv[0], "show"))
diff --git a/t/t5505-remote.sh b/t/t5505-remote.sh
index c4380c7..0c956ba 100755
--- a/t/t5505-remote.sh
+++ b/t/t5505-remote.sh
@@ -328,4 +328,19 @@ test_expect_success 'reject adding remote with an invalid name' '
'
+# The first three test if the tracking branches are properly renamed,
+# the last two ones check if the config is updated.
+
+test_expect_success 'rename a remote' '
+
+ git clone one four &&
+ (cd four &&
+ git remote rename origin upstream &&
+ rmdir .git/refs/remotes/origin &&
+ test "$(git symbolic-ref refs/remotes/upstream/HEAD)" = "refs/remotes/upstream/master" &&
+ test "$(git rev-parse upstream/master)" = "$(git rev-parse master)" &&
+ test "$(git config remote.upstream.fetch)" = "+refs/heads/*:refs/remotes/upstream/*" &&
+ test "$(git config branch.master.remote)" = "upstream")
+
+'
test_done
--
1.6.0.2
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