[RFCv2 03/12] Add option for using a foreign VCS

[Johan Herland <johan@herland.net>]

From: Daniel Barkalow <barkalow@iabervon.org>

This simply configures the remote to use a transport that doesn't have
any methods at all and is therefore unable to do anything yet.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Johan Herland <johan@herland.net>
---
 Documentation/config.txt |    4 ++++
 remote.c                 |    2 ++
 remote.h                 |    2 ++
 transport.c              |    3 ++-
 4 files changed, 10 insertions(+), 1 deletions(-)

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 1446007..b4ab67b 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1377,6 +1377,10 @@ remote.<name>.tagopt::
 	Setting this value to \--no-tags disables automatic tag following when
 	fetching from remote <name>
 
+remote.<name>.vcs::
+	Setting this to a value <vcs> will cause git to interact with
+	the remote with the git-vcs-<vcs> helper.
+
 remotes.<group>::
 	The list of remotes which are fetched by "git remote update
 	<group>".  See linkgit:git-remote[1].
diff --git a/remote.c b/remote.c
index c3ada2d..758727c 100644
--- a/remote.c
+++ b/remote.c
@@ -422,6 +422,8 @@ static int handle_config(const char *key, const char *value, void *cb)
 	} else if (!strcmp(subkey, ".proxy")) {
 		return git_config_string((const char **)&remote->http_proxy,
 					 key, value);
+	} else if (!strcmp(subkey, ".vcs")) {
+		return git_config_string(&remote->foreign_vcs, key, value);
 	}
 	return 0;
 }
diff --git a/remote.h b/remote.h
index 5db8420..ac0ce2f 100644
--- a/remote.h
+++ b/remote.h
@@ -11,6 +11,8 @@ struct remote {
 	const char *name;
 	int origin;
 
+	const char *foreign_vcs;
+
 	const char **url;
 	int url_nr;
 	int url_alloc;
diff --git a/transport.c b/transport.c
index 349ccae..f414bd3 100644
--- a/transport.c
+++ b/transport.c
@@ -928,7 +928,8 @@ struct transport *transport_get(struct remote *remote, const char *url)
 	ret->remote = remote;
 	ret->url = url;
 
-	if (!prefixcmp(url, "rsync:")) {
+	if (remote && remote->foreign_vcs) {
+	} else if (!prefixcmp(url, "rsync:")) {
 		ret->get_refs_list = get_refs_via_rsync;
 		ret->fetch = fetch_objs_via_rsync;
 		ret->push = rsync_transport_push;
-- 
1.6.4.rc3.138.ga6b98.dirty