From 07abfd57eb09934ad42dd3b2b12c46ee237b4b89 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 7 Oct 2015 15:56:28 +0100
Subject: [PATCH 1/1] git-branchmove: new script, still work in progress

---
 scripts/git-branchmove | 77 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100755 scripts/git-branchmove

diff --git a/scripts/git-branchmove b/scripts/git-branchmove
new file mode 100755
index 0000000..49fd370
--- /dev/null
+++ b/scripts/git-branchmove
@@ -0,0 +1,77 @@
+#!/bin/bash
+#
+# Moves a branch to or from the current git tree to or from
+# another git tree
+#
+# usage:   git-branchmove get|put REMOTE BRANCH
+
+set -e
+set -o posix
+
+fail () { echo >&2 "git-branchmove: $*"; exit 16; }
+badusage () { fail "bad usage: $*"; }
+
+case "$#.$1" in
+3.get)
+	op=get
+	remote="$2"
+	branch="$3"
+	;;
+3.put)
+	op=put
+	branch="$3"
+	;;
+*)
+	badusage "wrong number of arguments or wrong operation"
+	;;
+esac
+
+# Plan of attack:
+#  determine execute-sh runes for src and dst trees
+#  check that source branch is not checked out
+#  list affected branches on source
+#  list affected branches on destination and moan if any nonequal overlap
+#  transfer src->dst refs/heads/BRANCH:refs/heads/BRANCH
+#  transfer and merge reflog(s) xxx todo
+#  delete src refs
+
+case "$remote" in
+*:*)	remoteurl="$remote" ;;
+*)	remoteurl="$(
+		git config remote."$remote".pushurl ||
+		git config remote."$remote".url ||
+		fail "no pushurl or url defined for remote $remote"
+		)"
+esac
+
+remote_spec="$(perl -e '
+    $_ = $ARGV[0];
+    if (m#^ssh://([^:/]+)(?:\:(\w+))?#) {
+	print "$'\''|ssh ";
+	print " -p $3" if $2;
+        print "$1\n";
+    } elsif (m#^([-+_.0-9a-zA-Z\@]+):(?!//)#) {
+        print "$'\''|ssh $1\n";
+    } else {
+        die "git-branchmove: unsupported remote url \`$_'\''\n";
+    }
+' "$remoteurl")"
+
+remote_path="${remote_spec%%|*}"
+remote_rune="${remote_spec#*|}"
+
+case $op in
+get)
+	src_rune="$remote_rune"
+	src_path="$remote_path"
+	dst_rune="sh -c"
+	dst_path=.
+	;;
+put)
+	dst_rune="$remote_rune"
+	dst_path="$remote_path"
+	src_rune="sh -c"
+	src_path=.
+	;;
+esac
+
-- 
2.30.2