Merge branch 'dl/apply-3way-diff3'

[thirdparty/git.git] / checkout.c

diff --git a/checkout.c b/checkout.c
index bdefc888bae1516f0ddcf22264807d031af7c991..c72e9f9773e173c0dbcb5de88bde54d5434cf808 100644 (file)
--- a/checkout.c
+++ b/checkout.c
@@ -2,14 +2,20 @@
 #include "remote.h"
 #include "refspec.h"
 #include "checkout.h"
+#include "config.h"
 
 struct tracking_name_data {
        /* const */ char *src_ref;
        char *dst_ref;
        struct object_id *dst_oid;
-       int unique;
+       int num_matches;
+       const char *default_remote;
+       char *default_dst_ref;
+       struct object_id *default_dst_oid;
 };
 
+#define TRACKING_NAME_DATA_INIT { NULL, NULL, NULL, 0, NULL, NULL, NULL }
+
 static int check_tracking_name(struct remote *remote, void *cb_data)
 {
        struct tracking_name_data *cb = cb_data;
@@ -21,24 +27,45 @@ static int check_tracking_name(struct remote *remote, void *cb_data)
                free(query.dst);
                return 0;
        }
+       cb->num_matches++;
+       if (cb->default_remote && !strcmp(remote->name, cb->default_remote)) {
+               struct object_id *dst = xmalloc(sizeof(*cb->default_dst_oid));
+               cb->default_dst_ref = xstrdup(query.dst);
+               oidcpy(dst, cb->dst_oid);
+               cb->default_dst_oid = dst;
+       }
        if (cb->dst_ref) {
                free(query.dst);
-               cb->unique = 0;
                return 0;
        }
        cb->dst_ref = query.dst;
        return 0;
 }
 
-const char *unique_tracking_name(const char *name, struct object_id *oid)
+const char *unique_tracking_name(const char *name, struct object_id *oid,
+                                int *dwim_remotes_matched)
 {
-       struct tracking_name_data cb_data = { NULL, NULL, NULL, 1 };
+       struct tracking_name_data cb_data = TRACKING_NAME_DATA_INIT;
+       const char *default_remote = NULL;
+       if (!git_config_get_string_const("checkout.defaultremote", &default_remote))
+               cb_data.default_remote = default_remote;
        cb_data.src_ref = xstrfmt("refs/heads/%s", name);
        cb_data.dst_oid = oid;
        for_each_remote(check_tracking_name, &cb_data);
+       if (dwim_remotes_matched)
+               *dwim_remotes_matched = cb_data.num_matches;
        free(cb_data.src_ref);
-       if (cb_data.unique)
+       free((char *)default_remote);
+       if (cb_data.num_matches == 1) {
+               free(cb_data.default_dst_ref);
+               free(cb_data.default_dst_oid);
                return cb_data.dst_ref;
+       }
        free(cb_data.dst_ref);
+       if (cb_data.default_dst_ref) {
+               oidcpy(oid, cb_data.default_dst_oid);
+               free(cb_data.default_dst_oid);
+               return cb_data.default_dst_ref;
+       }
        return NULL;
 }