vcs-svn: use error_errno()

diff --git a/branch.c b/branch.c
index 7ff3f204964127374ae2a337819ce0bce7be9ab2..c50ea42172ceadd2a76d12833631301223607067 100644 (file)
--- a/branch.c
+++ b/branch.c
@@ -49,7 +49,13 @@ static int should_setup_rebase(const char *origin)
        return 0;
 }
 
-void install_branch_config(int flag, const char *local, const char *origin, const char *remote)
+static const char tracking_advice[] =
+N_("\n"
+"After fixing the error cause you may try to fix up\n"
+"the remote tracking information by invoking\n"
+"\"git branch --set-upstream-to=%s%s%s\".");
+
+int install_branch_config(int flag, const char *local, const char *origin, const char *remote)
 {
        const char *shortname = NULL;
        struct strbuf key = STRBUF_INIT;
@@ -60,20 +66,23 @@ void install_branch_config(int flag, const char *local, const char *origin, cons
            && !origin) {
                warning(_("Not setting branch %s as its own upstream."),
                        local);
-               return;
+               return 0;
        }
 
        strbuf_addf(&key, "branch.%s.remote", local);
-       git_config_set(key.buf, origin ? origin : ".");
+       if (git_config_set_gently(key.buf, origin ? origin : ".") < 0)
+               goto out_err;
 
        strbuf_reset(&key);
        strbuf_addf(&key, "branch.%s.merge", local);
-       git_config_set(key.buf, remote);
+       if (git_config_set_gently(key.buf, remote) < 0)
+               goto out_err;
 
        if (rebasing) {
                strbuf_reset(&key);
                strbuf_addf(&key, "branch.%s.rebase", local);
-               git_config_set(key.buf, "true");
+               if (git_config_set_gently(key.buf, "true") < 0)
+                       goto out_err;
        }
        strbuf_release(&key);
 
@@ -102,6 +111,19 @@ void install_branch_config(int flag, const char *local, const char *origin, cons
                                          local, remote);
                }
        }
+
+       return 0;
+
+out_err:
+       strbuf_release(&key);
+       error(_("Unable to write upstream branch configuration"));
+
+       advise(_(tracking_advice),
+              origin ? origin : "",
+              origin ? "/" : "",
+              shortname ? shortname : remote);
+
+       return -1;
 }
 
 /*
@@ -109,8 +131,8 @@ void install_branch_config(int flag, const char *local, const char *origin, cons
  * to infer the settings for branch.<new_ref>.{remote,merge} from the
  * config.
  */
-static int setup_tracking(const char *new_ref, const char *orig_ref,
-                         enum branch_track track, int quiet)
+static void setup_tracking(const char *new_ref, const char *orig_ref,
+                          enum branch_track track, int quiet)
 {
        struct tracking tracking;
        int config_flags = quiet ? 0 : BRANCH_CONFIG_VERBOSE;
@@ -118,7 +140,7 @@ static int setup_tracking(const char *new_ref, const char *orig_ref,
        memset(&tracking, 0, sizeof(tracking));
        tracking.spec.dst = (char *)orig_ref;
        if (for_each_remote(find_tracked_branch, &tracking))
-               return 1;
+               return;
 
        if (!tracking.matches)
                switch (track) {
@@ -127,18 +149,18 @@ static int setup_tracking(const char *new_ref, const char *orig_ref,
                case BRANCH_TRACK_OVERRIDE:
                        break;
                default:
-                       return 1;
+                       return;
                }
 
        if (tracking.matches > 1)
-               return error(_("Not tracking: ambiguous information for ref %s"),
-                               orig_ref);
+               die(_("Not tracking: ambiguous information for ref %s"),
+                   orig_ref);
 
-       install_branch_config(config_flags, new_ref, tracking.remote,
-                             tracking.src ? tracking.src : orig_ref);
+       if (install_branch_config(config_flags, new_ref, tracking.remote,
+                             tracking.src ? tracking.src : orig_ref) < 0)
+               exit(-1);
 
        free(tracking.src);
-       return 0;
 }
 
 int read_branch_desc(struct strbuf *buf, const char *branch_name)