y-decompile

#!/usr/bin/env bash

# Decompiles hybris jar files using CFR or PROCYON decompiler
# Decompiler can be specified by argument like - "y-decompile -d cfr" or "y-decompile -d procyon"
# Procyon decompiler is used by default
#
# source: https://github.com/sergaks/y-scripts

CFR_JAR=cfr_0_123.jar
CFR_URL="http://www.benf.org/other/cfr/$CFR_JAR"

PROCYON_JAR="procyon-decompiler-0.5.30.jar"
PROCYON_URL="https://bitbucket.org/mstrobel/procyon/downloads/$PROCYON_JAR"

TMP_DIR="/tmp"
HYBRIS_BIN_DIR=$(cd $(dirname `y-whereis`); pwd)
DECOMPILED_SRC_DIR=$(cd $(dirname $HYBRIS_BIN_DIR/../..); pwd)/data/decompiled_src

echo $DECOMPILED_SRC_DIR

SELECTED_DECOMPILER="procyon"

function decompileJar {
	TMP_DIR="/tmp"
	CFR_JAR=cfr_0_122.jar
	PROCYON_JAR="procyon-decompiler-0.5.30.jar"
	local jarPath=$1
	local decompiler=$2
	local jarName=$(basename $jarPath)
	local jarBaseName="${jarName%.*}"
	local jarDirPath=$(dirname $jarPath)/$jarBaseName
	if [ $decompiler = "cfr" ]; then
		java -jar $TMP_DIR/$CFR_JAR $jarPath --outputdir $jarDirPath;
	else
		java -jar $TMP_DIR/$PROCYON_JAR -sl -ln --unicode -jar $jarPath -o $jarDirPath;
	fi
	echo "Packing jar jar cvf $jarBaseName-sources.jar $jarDirPath"
	#cd $(dirname $jarPath)
	#jar cvf $jarBaseName-sources.jar $jarBaseName
	return 0
}
export -f decompileJar

if [ $? -ne 0 ]; then
	echo "FAILURE"
	exit 1
fi

checkargs () {
	if ! [[ $OPTARG =~ ^(procyon|cfr)$ ]]
	then
		echo "Unknow argument $OPTARG for option $opt. Please specify decompiler 'cfr' or 'procyon'"
		exit 1
	fi
}

# Parse command line argument - d (decompiler)
while getopts "d:" opt
do
case $opt in
d) checkargs
SELECTED_DECOMPILER=$OPTARG;;
esac
done

echo "Getting cfr decompliler"
wget -nc -O "$TMP_DIR/$CFR_JAR" $CFR_URL 

echo "Getting procyon decompliler"
wget -nc -O "$TMP_DIR/$PROCYON_JAR" $PROCYON_URL 

echo "Cleaning directory with decompiled source"
rm -rf "$DECOMPILED_SRC_DIR"

rsync -zarvm --exclude="custom/**" \
				--exclude="*tomcat*" \
				--include="*/" \
				--include="**/bin/*.jar" \
				--include="**/*_bof.jar" \
				--exclude="*" \
				"$HYBRIS_BIN_DIR" \
				"$DECOMPILED_SRC_DIR";

echo "Starting class files decompiling by $SELECTED_DECOMPILER"
find $DECOMPILED_SRC_DIR -name "*.jar" -exec bash -c 'decompileJar "$1" "$2"' _ {} $SELECTED_DECOMPILER \;


echo "Starting cleaning up"
find $DECOMPILED_SRC_DIR ! -name '*-sources.jar' -name '*.jar' -exec rm "{}" \;

echo "Finished, decompiled sources available in folder: $DECOMPILED_SRC_DIR"