X-Git-Url: http://nitlanguage.org

diff --git a/doc/git-gen-version.sh b/doc/git-gen-version.sh
new file mode 100755
index 0000000..145f2f7
--- /dev/null
+++ b/doc/git-gen-version.sh
@@ -0,0 +1,51 @@
+#!/bin/sh
+
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Copyright 2008 Jean Privat <jean@pryen.org>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This program is used to generate version number from git refs.
+# The version number is stored in a dedicated Nit module.
+
+gen_version() {
+	if ! grep "$*" nit_version.sty >/dev/null 2>&1; then
+		cat > nit_version.sty<<END
+% This file was generated by git-gen-version.sh
+\\newcommand\\nitversion{$*}
+END
+		echo "Version $*"
+	fi
+}
+
+VN=$(git describe --always HEAD 2>/dev/null)
+if [ "$?" != "0" ]; then
+	if [ -r ../VERSION ]; then
+		VN="$(cat ../VERSION)"
+	else
+		echo >&2 "Error: no VERSION file and not a .git repository."
+		exit 1
+	fi
+fi
+if [ -z "$VN" ]; then
+	VN="undefined"
+fi
+if [ -n "$1" ]; then
+	VN="${VN}-$1"
+fi
+if [ -n "$(git diff HEAD 2>/dev/null)" ]; then
+	VN="${VN}-dirty"
+fi
+
+gen_version "$VN"