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

From: Daniel Barkalow <barkalow@xxxxxxxxxxxx>

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@xxxxxxxxxxxx>
Signed-off-by: Johan Herland <johan@xxxxxxxxxxx>
---
 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

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