git-debrebase: provide default rebase action

[dgit.git] / git-debrebase

diff --git a/git-debrebase b/git-debrebase
index 9a71bd30e4607039aa79b47307be4e797664356e..0e2e0b7438c76cad9d9f3020896da15a117c6a7d 100755 (executable)
--- a/git-debrebase
+++ b/git-debrebase
@@ -21,6 +21,7 @@
 #    git-debrebase new-upstreams-v0 \
 #             NEW-VERSION ORIG-COMMITISH
 #            [EXTRA-ORIG-NAME EXTRA-ORIG-COMMITISH ...]
+#            [<git-rebase options>]
 
 # usages:
 #    git-debrebase status
@@ -787,6 +788,8 @@ sub update_head_checkout ($$$) {
 
 sub update_head_postlaunder ($$$) {
     my ($old, $tip, $reflogmsg) = @_;
+    return if $tip eq $old;
+    print "git-debrebase: laundered (head was $old)\n";
     update_head $old, $tip, $reflogmsg;
     # no tree changes except debian/patches
     runcmd @git, qw(rm --quiet --ignore-unmatch -rf debian/patches);
@@ -802,6 +805,14 @@ sub cmd_launder () {
     printf "# last upstream merge\n%s\n", $last_upstream_merge;
 }
 
+sub defaultcmd_rebase () {
+    my $old = get_head();
+    my ($tip,$breakwater) = walk $old;
+    update_head_postlaunder $old, $tip, 'launder for rebase';
+    @ARGV = qw(-i) unless @ARGV; # make configurable
+    runcmd @git, qw(rebase), @ARGV, $breakwater;
+}
+
 sub cmd_analyse () {
     die if ($ARGV[0]//'') =~ m/^-/;
     badusage "too many arguments to analyse" if @ARGV>1;
@@ -816,16 +827,14 @@ sub cmd_analyse () {
 }
 
 sub cmd_new_upstream_v0 () {
-    # xxx would like to support more git-rebase options
-    badusage
- "need NEW-VERSION UPS-COMMITISH [EXTRA-UPS-NAME EXTRA-UPS-COMMITISH...]"
-       unless @ARGV % 2 == 0 and @ARGV >= 2;
     # tree should be clean and this is not checked
     # automatically and unconditionally launders before rebasing
     # if rebase --abort is used, laundering has still been done
 
     my %pieces;
 
+    badusage "need NEW-VERSION UPS-COMMITTISH" unless @ARGV >= 2;
+
     # parse args - low commitment
     my $new_version = (new Dpkg::Version scalar(shift @ARGV), check => 1);
     my $new_upstream_version = $new_version->version();
@@ -853,8 +862,12 @@ sub cmd_new_upstream_v0 () {
         OldIx => 0,
         New => $new_upstream,
     );
-    while (@ARGV) {
+    while (@ARGV && $ARGV[0] !~ m{^-}) {
        my $n = shift @ARGV;
+
+        badusage "for each EXTRA-UPS-NAME need EXTRA-UPS-COMMITISH"
+            unless @ARGV && $ARGV[0] !~ m{^-};
+
        my $c = git_rev_parse shift @ARGV;
        die unless $n =~ m/^$extra_orig_namepart_re$/;
        $newpiece->($n, New => $c);
@@ -997,9 +1010,10 @@ END
     # the laundering output, because git-rebase can't easily be made
     # to make a replay list which is based on some other branch
 
-    update_head $old_head, $old_laundered_tip, 'launder for new upstream';
+    update_head_postlaunder $old_head, $old_laundered_tip,
+        'launder for new upstream';
 
-    my @cmd = (@git, qw(rebase --onto), $new_bw, $old_bw);
+    my @cmd = (@git, qw(rebase --onto), $new_bw, $old_bw, @ARGV);
     runcmd @cmd;
     # now it's for the user to sort out
 }
@@ -1063,10 +1077,14 @@ chdir $toplevel or die "chdir $toplevel: $!";
 
 $rd = fresh_playground "$playprefix/misc";
 
-my $cmd = shift @ARGV;
-my $cmdfn = $cmd;
-$cmdfn =~ y/-/_/;
-$cmdfn = ${*::}{"cmd_$cmdfn"};
+if (!@ARGV || $ARGV[0] =~ m{^-}) {
+    defaultcmd_rebase();
+} else {
+    my $cmd = shift @ARGV;
+    my $cmdfn = $cmd;
+    $cmdfn =~ y/-/_/;
+    $cmdfn = ${*::}{"cmd_$cmdfn"};
 
-$cmdfn or badusage "unknown git-debrebase sub-operation $cmd";
-$cmdfn->();
+    $cmdfn or badusage "unknown git-debrebase sub-operation $cmd";
+    $cmdfn->();
+}