#!/bin/bash

# *************************************************
# checkstyle-cos126
# Hayk Martirosyan
# -------------------
# Easy-to-understand wrapper for using checkstyle.
# *************************************************

# This must match the install directory
INSTALL=/usr/local/introcs
JAVA=java

# Find most recent version of Checkstyle
CHECKSTYLE=checkstyle-[0-9].[0-9]*
CHECKSTYLE_JAR=$(ls -td ${INSTALL}/${CHECKSTYLE}/${CHECKSTYLE}-all.jar | head -1)

# xml files that specify which Checkstyle checks to run or suppress
CHECKSTYLE_XML=${INSTALL}/checkstyle-introcs.xml
SUPPRESSIONS_XML=${INSTALL}/checkstyle-suppressions.xml

# set base directory to current working directory
BASEDIR=`pwd -P`

# If there are no arguments
if [ ! -n "$1" ]; then
	echo 'Specify .java files as arguments.'
	echo "Usage: 'checkstyle Test.java'"
	exit
fi

# If the first argument is either a .class or .java file that exists, runs findbugs
if [ "${1##*.}" = "java" ]; then
    if [ -e "$1" ]; then
        echo "Running checkstyle on $*:"
        $JAVA -cp "${CHECKSTYLE_JAR}" -Dsuppressions="${SUPPRESSIONS_XML}" -Dbasedir="${BASEDIR}" com.puppycrawl.tools.checkstyle.Main -c "${CHECKSTYLE_XML}" $* | sed 's/\[ERROR\] //'
    else
        echo "File not found! Make sure you are specifying the path correctly."
        echo "The filename is case sensitive."
    fi
else
    echo "Checkstyle needs a .java file as an argument!"
    echo "The filename is case sensitive."
fi