#!/bin/sh
#
# Copyright 2016 Garrett D'Amore <garrett@damore.org>
#
# This software is supplied under the terms of the MIT License, a
# copy of which should be located in the distribution where this
# file was obtained (LICENSE.txt).  A copy of the license may also be
# found online at https://opensource.org/licenses/MIT.
#

#
# This script is used to run uncrustify and report files that don't match.
# It looks for .c and .h files, located in ../src, and uses the config file
# uncrustify.cfg located in the same directory as this script. It only handles
# C language at this point.
#
mydir=`dirname $0`
srcdir=${mydir}/../src
failed=

clang-format -version > /dev/null
if [ $? -ne 0 ]; then
	echo "clang-format not found.  Skipping checks."
	exit 0
fi

mytmpdir=`mktemp -d`

for file in `find ${srcdir} -name '*.[ch]' -print`
do
	ext=${file##*.}
	oldf=${file}
	newf=${mytmpdir}/new.${ext}
	clang-format -style=file ${oldf} > ${newf}
	cmp -s ${oldf} ${newf}
	if [ $? -ne 0 ]
	then
		echo "${file} style changes"
		if [ -t 1 ]; then
			colordiff -u $oldf $newf
		else
			diff -u $oldf $newf
		fi
		failed=1
	fi
done
rm -rf $mytmpdir
if [ -n "$failed" ]
then
	echo "Format differences found!" 1>&2
	# Sadly, there are different versions of Uncrustify, and they don't
	# seem to universally agree.  So let's not trigger a build error on
	# this -- but instead just emit it to standard output.
	exit 0
fi