makejar.sh

#!/bin/bash
############################
####Make Jar by Theldus#####
############################

usage()
{
	echo -e "Usage: \n$0 <main-class> <.class folder>"
	echo "          main-class   : Your main class, without extension"
	echo "          .class folder: Where are your binary files"
}

checkargs()
{
	if [ "$#" -ne 2 ]
	then
		usage
	else
		#Lets check if the class folder exists.
		if [ ! -d "$2" ]
		then
			echo -e "\033[1;31mYour directory does not exist!, plz check the parameters\033[0m"
			usage
		else
			javaVersion=$(javac -version 2>&1 > /dev/null | cut -d' ' -f2)
			mainClass=$(echo "$1" | sed 's/\./\//g')
			mainClass="$2/$mainClass.class"
			file=$(basename $mainClass)
			
			#Search for main
			mainJavap=$(javap $mainClass 2> /dev/null | grep "public static void main")
			if [ -z "$mainJavap" ]
			then
				echo -e "\033[1;31mThe file\033[0m \033[1;36m$file\033[0m \033[1;31m is really your main class?\033[0m"
			else
				echo -e "\033[1;32mThe file\033[0m \033[1;36m$file\033[0m \033[1;32mactually looks like the main file, ok :D\033[0m"
			fi
			
			mkdir -p "$2/META-INF"
			echo "Manifest-Version: 1.0"                          >  $2/META-INF/MANIFEST.MF
			echo "Created-By: $javaVersion (MakeJar by Theldus)"  >> $2/META-INF/MANIFEST.MF
			echo "Main-Class: $1"                                 >> $2/META-INF/MANIFEST.MF
			
			echo -e "\033[1;32mBulding jar...\033[0m"
			
			pushd . &> /dev/null
			cd $2
			zip -r $1.jar ./* &> /dev/null
			popd    &> /dev/null
			
			rm -rf $2/META-INF
			
			file=$(basename "$2/$1.jar")
			echo -e "\033[1;33mFile\033[0m \033[1;36m$file\033[0m \033[1;33mcreated with success, ;)\033[0m"
		fi
	fi
}

checkargs "$@"