Utility script that makes enforcing PEP8 within git's pre-commit hook as easy as possible.

This should be mandatory for all developers, IMHO.

Change-Id: I83e8a7ab0a82df0fd08a2bef80295344b3a00a86

enable-pre-commit-hook.sh

@@ -0,0 +1,42 @@
+#!/bin/sh
+
+# Copyright 2011 OpenStack LLC
+#
+# 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.
+
+PRE_COMMIT_SCRIPT=.git/hooks/pre-commit
+
+make_hook() {
+    echo "exec ./run_tests.sh -N -p" >> $PRE_COMMIT_SCRIPT
+    chmod +x $PRE_COMMIT_SCRIPT
+
+    if [ -w $PRE_COMMIT_SCRIPT -a -x $PRE_COMMIT_SCRIPT ]; then
+        echo "pre-commit hook was created successfully"
+    else
+        echo "unable to create pre-commit hook"
+    fi
+}
+
+# NOTE(jk0): Make sure we are in nova's root directory before adding the hook.
+if [ ! -d ".git" ]; then
+    echo "unable to find .git; moving up a directory"
+    cd ..
+    if [ -d ".git" ]; then
+        make_hook
+    else
+        echo "still unable to find .git; hook not created"
+    fi
+else
+    make_hook
+fi
+