build: check formatting with astyle

Change-Id: Ic09b4dd7ccccb557e8236fc0b7e3105fce1644b3
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>

.astylerc

@@ -0,0 +1,26 @@
+# Bracket Style
+style=kr # K&R brackets
+
+# Indentation
+indent=force-tab=8 # Use tabs for indentation, spaces for minor alignment
+min-conditional-indent=0
+
+# Padding
+unpad-paren # Remove all spaces with parens that aren't requested below
+pad-oper # Put spaces around operators
+pad-header # Put spaces between if/while/for etc. and the first paren
+
+# Pointers
+align-pointer=name # Align the * next to the variable name
+
+# Line wrapping
+max-code-length=100 # 100 character line limit
+break-after-logical # For if statements, wrap to the next line after logical operator
+
+# Line endings
+lineend=linux # LF line endings
+
+# General options
+suffix=none
+recursive
+formatted

autobuild.sh

@@ -10,6 +10,8 @@ DPDK_DIR=/usr/local/dpdk-2.1.0/x86_64-native-linuxapp-gcc
 
 cd $src
 
+./scripts/check_format.sh
+
 scanbuild=''
 if hash scan-build; then
 	scanbuild="scan-build -o $out/scan-build-tmp --status-bugs"

scripts/check_format.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+readonly BASEDIR=$(readlink -f $(dirname $0))/..
+cd $BASEDIR
+
+# exit on errors
+set -e
+
+if hash astyle; then
+	echo -n "Checking coding style..."
+	rm -f astyle.log
+	touch astyle.log
+	astyle --options=.astylerc "*.c" >> astyle.log
+	astyle --options=.astylerc "*.h" >> astyle.log
+	if grep -q "^Formatted" astyle.log; then
+		echo " errors detected"
+		sed -i -e 's/  / /g' astyle.log
+		grep --color=auto "^Formatted.*" astyle.log
+		echo "Incorrect code style detected in one or more files."
+		echo "The files have been automatically formatted."
+		echo "Remember to add the files to your commit."
+		rm -f astyle.log
+		exit 1
+	fi
+	echo " OK"
+	rm -f astyle.log
+else
+	echo "You do not have astyle installed so your code style is not being checked!"
+	exit 0
+fi
+
+exit 0