1 files changed, 90 insertions, 0 deletions
diff --git a/git-remote-testgit b/git-remote-testgit
new file mode 100755
index 0000000000..b395c8de59
--- /dev/null
+++ b/git-remote-testgit
@@ -0,0 +1,90 @@
+#!/usr/bin/env bash
+# Copyright (c) 2012 Felipe Contreras
+
+alias=$1
+url=$2
+
+dir="$GIT_DIR/testgit/$alias"
+prefix="refs/testgit/$alias"
+
+default_refspec="refs/heads/*:${prefix}/heads/*"
+
+refspec="${GIT_REMOTE_TESTGIT_REFSPEC-$default_refspec}"
+
+test -z "$refspec" && prefix="refs"
+
+export GIT_DIR="$url/.git"
+
+mkdir -p "$dir"
+
+if test -z "$GIT_REMOTE_TESTGIT_NO_MARKS"
+then
+	gitmarks="$dir/git.marks"
+	testgitmarks="$dir/testgit.marks"
+	test -e "$gitmarks" || >"$gitmarks"
+	test -e "$testgitmarks" || >"$testgitmarks"
+	testgitmarks_args=( "--"{import,export}"-marks=$testgitmarks" )
+fi
+
+while read line
+do
+	case $line in
+	capabilities)
+		echo 'import'
+		echo 'export'
+		test -n "$refspec" && echo "refspec $refspec"
+		if test -n "$gitmarks"
+		then
+			echo "*import-marks $gitmarks"
+			echo "*export-marks $gitmarks"
+		fi
+		echo
+		;;
+	list)
+		git for-each-ref --format='? %(refname)' 'refs/heads/'
+		head=$(git symbolic-ref HEAD)
+		echo "@$head HEAD"
+		echo
+		;;
+	import*)
+		# read all import lines
+		while true
+		do
+			ref="${line#* }"
+			refs="$refs $ref"
+			read line
+			test "${line%% *}" != "import" && break
+		done
+
+		if test -n "$gitmarks"
+		then
+			echo "feature import-marks=$gitmarks"
+			echo "feature export-marks=$gitmarks"
+		fi
+		echo "feature done"
+		git fast-export "${testgitmarks_args[@]}" $refs |
+		sed -e "s#refs/heads/#${prefix}/heads/#g"
+		echo "done"
+		;;
+	export)
+		before=$(git for-each-ref --format='%(refname) %(objectname)')
+
+		git fast-import "${testgitmarks_args[@]}" --quiet
+
+		after=$(git for-each-ref --format='%(refname) %(objectname)')
+
+		# figure out which refs were updated
+		join -e 0 -o '0 1.2 2.2' -a 2 <(echo "$before") <(echo "$after") |
+		while read ref a b
+		do
+			test $a == $b && continue
+			echo "ok $ref"
+		done
+
+		echo
+		;;
+	'')
+		exit
+		;;
+	esac
+done