fetch: define shallow boundary with --shallow-exclude

[thirdparty/git.git] / builtin / fetch.c

diff --git a/builtin/fetch.c b/builtin/fetch.c
index 8e742135f049c2792bfc5a20299dac88518929cc..147504dd51974cf7eb3881948a3b46c40219027e 100644 (file)
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -36,10 +36,12 @@ static int prune = -1; /* unspecified */
 
 static int all, append, dry_run, force, keep, multiple, update_head_ok, verbosity;
 static int progress = -1, recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
-static int tags = TAGS_DEFAULT, unshallow, update_shallow;
+static int tags = TAGS_DEFAULT, unshallow, update_shallow, deepen;
 static int max_children = 1;
 static const char *depth;
+static const char *deepen_since;
 static const char *upload_pack;
+static struct string_list deepen_not = STRING_LIST_INIT_NODUP;
 static struct strbuf default_rla = STRBUF_INIT;
 static struct transport *gtransport;
 static struct transport *gsecondary;
@@ -115,6 +117,10 @@ static struct option builtin_fetch_options[] = {
        OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
        OPT_STRING(0, "depth", &depth, N_("depth"),
                   N_("deepen history of shallow clone")),
+       OPT_STRING(0, "shallow-since", &deepen_since, N_("time"),
+                  N_("deepen history of shallow repository based on time")),
+       OPT_STRING_LIST(0, "shallow-exclude", &deepen_not, N_("revision"),
+                       N_("deepen history of shallow clone by excluding rev")),
        { OPTION_SET_INT, 0, "unshallow", &unshallow, NULL,
                   N_("convert to a complete repository"),
                   PARSE_OPT_NONEG | PARSE_OPT_NOARG, NULL, 1 },
@@ -754,7 +760,7 @@ static int quickfetch(struct ref *ref_map)
         * really need to perform.  Claiming failure now will ensure
         * we perform the network exchange to deepen our history.
         */
-       if (depth)
+       if (deepen)
                return -1;
        return check_everything_connected(iterate_ref_map, 1, &rm);
 }
@@ -859,7 +865,7 @@ static void set_option(struct transport *transport, const char *name, const char
                        name, transport->url);
 }
 
-static struct transport *prepare_transport(struct remote *remote)
+static struct transport *prepare_transport(struct remote *remote, int deepen)
 {
        struct transport *transport;
        transport = transport_get(remote, NULL);
@@ -870,6 +876,11 @@ static struct transport *prepare_transport(struct remote *remote)
                set_option(transport, TRANS_OPT_KEEP, "yes");
        if (depth)
                set_option(transport, TRANS_OPT_DEPTH, depth);
+       if (deepen && deepen_since)
+               set_option(transport, TRANS_OPT_DEEPEN_SINCE, deepen_since);
+       if (deepen && deepen_not.nr)
+               set_option(transport, TRANS_OPT_DEEPEN_NOT,
+                          (const char *)&deepen_not);
        if (update_shallow)
                set_option(transport, TRANS_OPT_UPDATE_SHALLOW, "yes");
        return transport;
@@ -877,8 +888,19 @@ static struct transport *prepare_transport(struct remote *remote)
 
 static void backfill_tags(struct transport *transport, struct ref *ref_map)
 {
-       if (transport->cannot_reuse) {
-               gsecondary = prepare_transport(transport->remote);
+       int cannot_reuse;
+
+       /*
+        * Once we have set TRANS_OPT_DEEPEN_SINCE, we can't unset it
+        * when remote helper is used (setting it to an empty string
+        * is not unsetting). We could extend the remote helper
+        * protocol for that, but for now, just force a new connection
+        * without deepen-since. Similar story for deepen-not.
+        */
+       cannot_reuse = transport->cannot_reuse ||
+               deepen_since || deepen_not.nr;
+       if (cannot_reuse) {
+               gsecondary = prepare_transport(transport->remote, 0);
                transport = gsecondary;
        }
 
@@ -1095,7 +1117,7 @@ static int fetch_one(struct remote *remote, int argc, const char **argv)
                die(_("No remote repository specified.  Please, specify either a URL or a\n"
                    "remote name from which new revisions should be fetched."));
 
-       gtransport = prepare_transport(remote);
+       gtransport = prepare_transport(remote, 1);
 
        if (prune < 0) {
                /* no command line request */
@@ -1167,6 +1189,8 @@ int cmd_fetch(int argc, const char **argv, const char *prefix)
        /* no need to be strict, transport_set_option() will validate it again */
        if (depth && atoi(depth) < 1)
                die(_("depth %s is not a positive number"), depth);
+       if (depth || deepen_since || deepen_not.nr)
+               deepen = 1;
 
        if (recurse_submodules != RECURSE_SUBMODULES_OFF) {
                if (recurse_submodules_default) {