From 73b4bbd35fce6d6ff2885271eb2fe20b768ae216 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 28 Jan 2017 08:57:08 +0000
Subject: [PATCH 1/1] git-debrebase: WIP before reorgs?

---
 git-debrebase | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/git-debrebase b/git-debrebase
index 0d9e936d..8911c057 100755
--- a/git-debrebase
+++ b/git-debrebase
@@ -35,5 +35,48 @@ sub cfg ($) {
 
 memoize('cfg');
 
+# usage
+#  git debrebase launder
+
+sub get_commit ($) {
+    my ($objid) = @_;
+    my ($type,$data) = git_cat_file $objid;
+    die unless $type eq 'commit';
+    $data =~ m/(?<=\n)\n/;
+    return ($`,$');
+}
+
+memoize('get_commit');
+
+sub DDEB () { return 0x1; }
+sub DUPS () { return 0x2; }
+sub DPAT () { return 0x4; }
+
+sub launder () {
+    # go through commits backwards
+    # we generate two lists of commits to apply
+    my (@deb_cl, @ups_cl);
+    my $cur = git_rev_parse('HEAD');
+    for (;;) {
+	my ($h,$m) = get_commit $cur;
+	my ($t) = $h =~ m/^tree (\w+)$/m;  defined $t or die $cur;
+	my (@p) = $h =~ m/^parent (\w+)$/m;
+	my (@d) = map { get_differs $t, $_ } @p;
+	if (@p == 1) {
+	    my ($d) = $d[0];
+	    if ($d == DPAT) {
+		# changes on debian/patches, discard it
+		$cur = $p[0];
+		next;
+	    }
+	    if ($d & DPAT) {
+	    
+}   
+
+if ($ARGV[0] eq 'launder') {
+    launder();
+}
+
 use Data::Dumper;
 print Dumper(cfg('wombat.foo.bar'));
+
-- 
2.30.2