pull --rebase: exit early when the working directory is dirty

diff --git a/builtin-revert.c b/builtin-revert.c
index e219859f9b04dc94a2444346541e86503085fdea..2b57525d7234086bdf2022d13fa405e5007627fb 100644 (file)
--- a/builtin-revert.c
+++ b/builtin-revert.c
@@ -9,6 +9,8 @@
 #include "utf8.h"
 #include "parse-options.h"
 #include "cache-tree.h"
+#include "diff.h"
+#include "revision.h"
 
 /*
  * This implements the builtins revert and cherry-pick.
@@ -31,7 +33,7 @@ static const char * const cherry_pick_usage[] = {
        NULL
 };
 
-static int edit, no_replay, no_commit, mainline;
+static int edit, no_replay, no_commit, mainline, signoff;
 static enum { REVERT, CHERRY_PICK } action;
 static struct commit *commit;
 
@@ -51,6 +53,7 @@ static void parse_args(int argc, const char **argv)
                OPT_BOOLEAN('e', "edit", &edit, "edit the commit message"),
                OPT_BOOLEAN('x', NULL, &no_replay, "append commit name when cherry-picking"),
                OPT_BOOLEAN('r', NULL, &noop, "no-op (backward compatibility)"),
+               OPT_BOOLEAN('s', "signoff", &signoff, "add Signed-off-by:"),
                OPT_INTEGER('m', "mainline", &mainline, "parent number"),
                OPT_END(),
        };
@@ -246,6 +249,17 @@ static char *help_msg(const unsigned char *sha1)
        return helpbuf;
 }
 
+static int index_is_dirty(void)
+{
+       struct rev_info rev;
+       init_revisions(&rev, NULL);
+       setup_revisions(0, NULL, &rev, "HEAD");
+       DIFF_OPT_SET(&rev.diffopt, QUIET);
+       DIFF_OPT_SET(&rev.diffopt, EXIT_WITH_STATUS);
+       run_diff_index(&rev, 1);
+       return !!DIFF_OPT_TST(&rev.diffopt, HAS_CHANGES);
+}
+
 static int revert_or_cherry_pick(int argc, const char **argv)
 {
        unsigned char head[20];
@@ -274,12 +288,11 @@ static int revert_or_cherry_pick(int argc, const char **argv)
                if (write_cache_as_tree(head, 0, NULL))
                        die ("Your index file is unmerged.");
        } else {
-               struct wt_status s;
-
                if (get_sha1("HEAD", head))
                        die ("You do not have a valid HEAD");
-               wt_status_prepare(&s);
-               if (s.commitable)
+               if (read_cache() < 0)
+                       die("could not read the index");
+               if (index_is_dirty())
                        die ("Dirty index: cannot %s", me);
                discard_cache();
        }
@@ -392,13 +405,21 @@ static int revert_or_cherry_pick(int argc, const char **argv)
         */
 
        if (!no_commit) {
-               if (edit)
-                       return execl_git_cmd("commit", "-n", NULL);
-               else
-                       return execl_git_cmd("commit", "-n", "-F", defmsg, NULL);
+               /* 6 is max possible length of our args array including NULL */
+               const char *args[6];
+               int i = 0;
+               args[i++] = "commit";
+               args[i++] = "-n";
+               if (signoff)
+                       args[i++] = "-s";
+               if (!edit) {
+                       args[i++] = "-F";
+                       args[i++] = defmsg;
+               }
+               args[i] = NULL;
+               return execv_git_cmd(args);
        }
-       if (reencoded_message)
-               free(reencoded_message);
+       free(reencoded_message);
 
        return 0;
 }