From a8726e89595ffbadc6dc591ca3f87df37e4377d3 Mon Sep 17 00:00:00 2001
From: Kai Krakow <kai@kaishome.de>
Date: Mon, 24 Sep 2018 20:39:00 +0200
Subject: [PATCH] format-check: Enable usage as pre-commit hook

This adds support for a switch `--pre-commit` to work in
pre-commit-mode. It downloads the file and runs the real pre-commit-hook
then.

Signed-off-by: Kai Krakow <kai@kaishome.de>
---
 scripts/format-check.sh | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/scripts/format-check.sh b/scripts/format-check.sh
index 6a9111f..a2384e0 100755
--- a/scripts/format-check.sh
+++ b/scripts/format-check.sh
@@ -1,9 +1,18 @@
 #!/bin/bash
 # Simple script to check for clang-format compliance
 
+# Ensure we are at the project root
+cd "$(dirname $0)"/..
+
 wget -Nq https://llvm.org/svn/llvm-project/cfe/trunk/tools/clang-format/git-clang-format
 
 if chmod +x git-clang-format; then
+  if [[ "$1" == "--pre-commit" ]]; then
+    # used via .git/hooks/pre-commit:
+    # exec "$(dirname $0)"/../../scripts/format-check.sh --pre-commit
+    ./git-clang-format
+    exit
+  fi
   CLANG_FORMAT_OUTPUT=$(./git-clang-format HEAD^ HEAD --diff)
   if [[ ! ${CLANG_FORMAT_OUTPUT} == "no modified files to format" ]] && [[ ! -z ${CLANG_FORMAT_OUTPUT} ]]; then
     echo "Failed clang format check:"