From 27935510402a89f1033e99c6789c453723f6052a Mon Sep 17 00:00:00 2001
From: Rasmus Karlsson <rasmus.karlsson@pajlada.com>
Date: Sat, 2 Nov 2019 11:59:04 +0100
Subject: [PATCH] add dockerfile for checking formatting

---
 .docker/Dockerfile.check-format | 10 ++++++++++
 tools/check-format.sh           | 19 +++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 .docker/Dockerfile.check-format
 create mode 100755 tools/check-format.sh

diff --git a/.docker/Dockerfile.check-format b/.docker/Dockerfile.check-format
new file mode 100644
index 000000000..7716ec220
--- /dev/null
+++ b/.docker/Dockerfile.check-format
@@ -0,0 +1,10 @@
+FROM ubuntu:19.10
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get -y install clang-format
+
+WORKDIR /build
+
+CMD ["/bin/sh"]
+ENTRYPOINT ["./tools/docker/build.sh"]
diff --git a/tools/check-format.sh b/tools/check-format.sh
new file mode 100755
index 000000000..1af2b596a
--- /dev/null
+++ b/tools/check-format.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+
+set -eu
+
+fail="0"
+
+while read -r file; do
+    if ! diff -u <(cat "$file") <(clang-format "$file"); then
+        echo "$file differs!!!!!!!"
+        fail="1"
+    fi
+done < <(find src/ \( -iname "*.hpp" -o -iname "*.cpp" \))
+
+if [ "$fail" = "1" ]; then
+    echo "At least one file is poorly formatted - check the output above"
+    exit 1
+fi
+
+echo "Everything seems to be formatted properly! Good job"