#!/bin/bash
#
# Script to clean binary files.
#
# JPackage Project <http://www.jpackage.org/>
#

# Import java functions
[ -r "/usr/share/java-utils/java-functions" ] \
 &&  . "/usr/share/java-utils/java-functions" || exit 1

# Prints help message
usage() {
	cat >&2 << EOF_USAGE

Usage: $0 -f instructions_file [-a archive_file] [-p]

Options:
	-a - Archive file on which actions will be performed, as opposed to 
	     current directory
	-p - Preserve original file names (-p to build-jar-repository)
	-f - The instructions file to check against.
EOF_USAGE
	exit 2
}

[ "$1" = "--help" ] && usage

[ "$#" = 0 ] && usage

set_javacmd || exit 3
check_java_env || exit 4
set_jvm_dirs || exit 5

# Default jar map
_JAR_MAP_FILE="/usr/share/java-utils/jarname-jpp-map"

# Directory in which script was invoked
_WORKING_DIR=`pwd`

# Run-time variables
_ARCHIVE_FILE=""
_REMOVE_LIST=""
_INSTRUCTIONS_FILE=""
_CUSTOM_JAR_MAP_FILE=""
_PRESERVE_BINARY_NAMES=0

# Directory where archive is extracted, if we are working with one
_ARCHIVE_EXTRACTION_DIR=/tmp/_cbr_archive_dir.$$

# Executes the build-jar-repository command
create_jar_links () {

	_old_ifs=$IFS
	IFS="|"

	for file in $_REMOVE_LIST; do

		echo $file | grep -E "\\.jar$" >& /dev/null
		if [ ! $? -eq 0 ]; then
			continue
		fi

		# Strip version and extention. e.g. abc-2.1-api-1.0.4.jar -> abc-2.1-api
		_jar_filename=`basename $file`
		_search_name=`basename $file`
		_search_name=`echo $_search_name | sed -r -e s/-[[:digit:].]*\\\.jar//g | sed -r -e s/\\\.jar$//g`

		_mapped_jar_name=""
		_final_name=""

		# Search in custom jar map first
		if [ ! "$_CUSTOM_JAR_MAP_FILE" = "" ] && [ -f $_CUSTOM_JAR_MAP_FILE ]; then
			# echo "grep -E \"^$_search_name.jar \" $_CUSTOM_JAR_MAP_FILE | awk '{print $2}'"
			_mapped_jar_name=`grep -E "^$_search_name\\.jar " $_CUSTOM_JAR_MAP_FILE | awk '{print $2}'`

			if [ "$_mapped_jar_name" = "" ]; then
				_mapped_jar_name=`grep -E "^$_jar_filename " $_CUSTOM_JAR_MAP_FILE | awk '{print $2}'`
			fi
		fi

		# Search in global jar map ONLY IF things were not found in the custom map
		if [ -f $_JAR_MAP_FILE ] && [ "$_mapped_jar_name" = "" ]; then
			# echo "grep -E \"^$_search_name.jar \" $_JAR_MAP_FILE | awk '{print $2}'"
			_mapped_jar_name=`grep -E "^$_search_name\\.jar " $_JAR_MAP_FILE | awk '{print $2}'`
		fi

		if [ "$_mapped_jar_name" = "" ]; then
			_final_name=$_search_name
		else
			_final_name=$_mapped_jar_name
		fi

		_preserve_name_flag=""
		if [ $_PRESERVE_BINARY_NAMES = 1 ]; then
			_preserve_name_flag="-p"
		fi

		_target_dir=`dirname $file`

		_old_ifs=$IFS
	    IFS='
'

		for jppname in $_final_name; do
			echo "build-jar-repository -s $_preserve_name_flag $_target_dir $jppname"
			build-jar-repository -s $_preserve_name_flag $_target_dir $jppname
		done

		IFS=$_old_ifs
	done

	IFS=$_old_ifs

}

while [ $# -gt 0 ] ; do
	case "$1" in
		-f)
			if [ ! -f $2 ] ; then
				echo "$0: error: Could not find instructions file!"
				exit 6;
			fi

			while read line; do

				echo $line | grep ^% >& /dev/null
				if [ $? -eq 0 ] || [ "$line" = "" ]; then
					continue
				fi

				_type=`echo $line | awk '{print $1}'`
				_value=`echo $line | awk '{ printf "%s", $2; for (i = 3; i <= NF; i=i+1) printf " %s", $i }'`

				if [ $_type = "remove" ]; then

					if [ -z "$_REMOVE_LIST" ]; then
						_REMOVE_LIST=$_value
					else
						_REMOVE_LIST=${_REMOVE_LIST}"|"$_value
					fi
				fi

			done < $2

			_INSTRUCTIONS_FILE="$2"

			shift
		;;
		-a)
			_ARCHIVE_FILE="$2"
			shift
		;;
		-d)
			_CUSTOM_JAR_MAP_FILE="$2"
			shift
		;;
		-p)
			_PRESERVE_BINARY_NAMES=1
		;;
		*)
			echo "ERROR: Unknown argument $1"
			exit 6
		;;
	esac
	shift
done

if [ "$_INSTRUCTIONS_FILE" = "" ]; then
	echo "ERROR: Instructions file must be specified."
	exit 6
fi

# If we are dealing with an archive file, we need to extract things somewhere, and do our actions in there
if [ ! -z $_ARCHIVE_FILE ]; then
	rm -rf $_ARCHIVE_EXTRACTION_DIR
	mkdir -p $_ARCHIVE_EXTRACTION_DIR
	pushd $_ARCHIVE_EXTRACTION_DIR >& /dev/null
	tar xf $_WORKING_DIR/`basename $_ARCHIVE_FILE`
fi

create_jar_links

if [ ! -z $_ARCHIVE_FILE ]; then

	_archive_basename=`basename $_ARCHIVE_FILE`
	_arch_name=${_archive_basename%%.*}
	_arch_ext=${_archive_basename#*.}

	_compression_flag=""

	echo $_ARCHIVE_FILE | grep gz$ >& /dev/null
	if [ $? -eq 0 ]; then
		_compression_flag=z
	fi

	echo $_ARCHIVE_FILE | grep bz2$ >& /dev/null
	if [ $? -eq 0 ]; then
		_compression_flag=f
	fi

	tar cf$_compression_flag $_WORKING_DIR/$_arch_name-clean.$_arch_ext *

	popd >& /dev/null
	rm -rf $_ARCHIVE_EXTRACTION_DIR
fi