builtin rebase: support --abort

This commit teaches the builtin rebase the "abort" action, which a user
can call to roll back a rebase that is in progress.

Signed-off-by: Pratik Karki <predatoramigo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/rebase.c b/builtin/rebase.c
index c477108f796fbb600d0931bf8622619ea34b234c..ceb786d3a052a5efa55176dbd219c0ceaa249617 100644 (file)
--- a/builtin/rebase.c
+++ b/builtin/rebase.c
@@ -470,6 +470,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
                NO_ACTION,
                ACTION_CONTINUE,
                ACTION_SKIP,
+               ACTION_ABORT,
        } action = NO_ACTION;
        struct option builtin_rebase_options[] = {
                OPT_STRING(0, "onto", &options.onto_name,
@@ -496,6 +497,9 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
                            ACTION_CONTINUE),
                OPT_CMDMODE(0, "skip", &action,
                            N_("skip current patch and continue"), ACTION_SKIP),
+               OPT_CMDMODE(0, "abort", &action,
+                           N_("abort and check out the original branch"),
+                           ACTION_ABORT),
                OPT_END(),
        };
 
@@ -608,6 +612,22 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
                        exit(1);
                goto run_rebase;
        }
+       case ACTION_ABORT: {
+               struct string_list merge_rr = STRING_LIST_INIT_DUP;
+               options.action = "abort";
+
+               rerere_clear(&merge_rr);
+               string_list_clear(&merge_rr, 1);
+
+               if (read_basic_state(&options))
+                       exit(1);
+               if (reset_head(&options.orig_head, "reset",
+                              options.head_name, 0) < 0)
+                       die(_("could not move back to %s"),
+                           oid_to_hex(&options.orig_head));
+               ret = finish_rebase(&options);
+               goto cleanup;
+       }
        default:
                die("TODO");
        }