1 files changed, 78 insertions, 0 deletions
diff --git a/tests/tartree-edit b/tests/tartree-edit
new file mode 100755
index 0000000..2e0c017
--- /dev/null
+++ b/tests/tartree-edit
@@ -0,0 +1,78 @@
+#!/bin/sh
+set -e
+fail () { echo >&2 "$0: $*"; exit 1; }
+
+case "$#.$1" in
+2.edit|2.done)	mode="$1"; arg="$2" ;;
+2.-*)		fail "no options understood"			;;
+*)		fail "usage: tartree-edit edit|done DIRECTORY"	;;
+esac
+
+case "$arg" in
+*.tar)		base=${arg%.tar}			;;
+*.edit)		base=${arg%.edit}			;;
+*)		base=${arg}				;;
+esac
+
+tryat_pre () {
+	local b="$1"
+	rm -rf "$b.tmp"
+	if test -f "$b.tar" && test -f "$b.edit"; then
+		echo "$b.edit exists, deleting possibly-obsolete $b.tar"
+		rm "$b.tar"
+	fi
+}
+
+tryat_edit () {
+	local b="$1"
+	if test -d "$b.edit"; then
+		echo "$b.edit already exists"
+		exit 0
+	fi
+	if test -f "$b.tar"; then
+		mkdir "$b.tmp"
+		(set -e; cd "$b.tmp"; tar xf "$b.tar")
+		mv "$b.tmp" "$b.edit"
+		rm "$b.tar"
+		echo "$b.edit ready"
+		exit 0
+	fi
+}
+
+tryat_done () {
+	local b="$1"
+	if test -d "$b.edit"; then
+		(set -e; cd "$b.edit"; tar cf "$b.tmp" *)
+		mv "$b.tmp" "$b.tar"
+		mv "$b.edit" "$b.tmp"
+		rm -rf "$b.tmp"
+		echo "$b.tar regenerated"
+		exit 0
+	fi
+	if test -f "$b.tar"; then
+		echo "$b.tar already exists and $b.edit doesn't"
+		exit 0
+	fi
+}
+
+tryat () {
+	local b="$1"
+	if ! test -f "$b.tar" && ! test -d "$b.edit"; then
+		return
+	fi
+	tryat_pre "$b"
+	tryat_$mode "$b"
+	fail "unexpected situation in $b.*"
+}
+
+case "$arg" in
+/*)		tryat "$base"
+		;;
+*)
+		pwd=`pwd`
+		tryat "$pwd/$base"
+		tryat "$pwd/git-srcs/$base"
+		tryat "$pwd/tests/git-srcs/$base"
+		fail "could not find $base..."
+		;;
+esac