Cuchaz m3l build script

build.gradle

import groovy.json.JsonSlurper

import java.nio.file.Files

//Project data
String minecraftVersion = "1.8.3",
       dirLib = "lib",
       dirNatives = "natives/${minecraftVersion}"

//Minecraft data
String minecraftRepo = "https://s3.amazonaws.com/Minecraft.Download/",
       versionURL = "${minecraftRepo}versions/${minecraftVersion}/${minecraftVersion}",
       versionJSON = "${versionURL}.json",
       versionJAR = "${versionURL}.jar"

//Mapping data
String mappingsCommit = "88962d643ca3912333ede2da1b25d9a1092d5781",
       mappingsFile = "../Enigma Mappings/${minecraftVersion}.mappings",
       pathMappings = "conf/${minecraftVersion}.client.mappings"

//Forge data
String forgeVersion = "1.8-11.14.1.1334",
       forgeJar = "forge-${forgeVersion}-universal.jar",
       pathForgeUniversal = "${dirLib}/${forgeJar}"

//Enigma data
String enigmaVer = "0.10.4b",
       dirEnigma = "enigma",
       pathEnigma = "${dirEnigma}/enigma-lib-${enigmaVer}.jar"

apply plugin: 'java'
apply plugin: 'idea'
apply plugin: 'eclipse'

repositories {
	mavenCentral()
	jcenter()
	maven {
		url "http://maven.cuchazinteractive.com"
	}
	maven {
		url "https://libraries.minecraft.net"
	}
}

version = minecraftVersion + "-0.3b"
group = "cuchaz.m3l"
dependencies {
	compile 'net.minecraft:launchwrapper:1.8'
	compile 'com.google.guava:guava:18.0'
	compile 'org.javassist:javassist:3.19.0-GA'
	compile 'ch.qos.logback:logback-classic:1.1.2'
	compile 'org.slf4j:slf4j-api:1.7.10'
	download(pathForgeUniversal, "http://files.minecraftforge.net/maven/net/minecraftforge/forge/${forgeVersion}/${forgeJar}")
	compile fileTree(dir: dirLib, include: '*.jar')
	compile fileTree(dir: dirNatives, include: '*.jar')

	testCompile 'junit:junit:4.12'
	testCompile 'org.hamcrest:hamcrest-all:1.3'
}

sourceSets {
	main {
		java {
			srcDir 'src'
		}
		resources {
			srcDir 'resources'
		}
	}
	test {
		java {
			srcDir 'test'
		}
		resources {
			srcDir 'testResources'
		}
	}
}

def parseRules = { lib ->
	if (lib.rules)
	{
		def download = false
		lib.rules.each { rule ->
			if (rule.os)
			{
				if (rule.os.name == getOs())
				{
					download = rule.action == "allow"
				}
			}
			else
			{
				download = rule.action == "allow"
			}
		}
		download
	}
	else
	{
		true
	}
}

def parseNatives = { lib ->
	if (lib.natives && getOs() != "unknown")
	{
		assert lib.natives instanceof Map
		lib.natives.get(getOs())
	}
	else
	{
		"?"
	}
}

task downloadLibraries << {
	println "Downloading libraries from ${versionJSON}..."
	download("${project.tasks['downloadLibraries'].temporaryDir}/version.json", "${versionJSON}")

	def jsonSlurper = new JsonSlurper()
	def root = jsonSlurper.parse(new File("${project.tasks['downloadLibraries'].temporaryDir}/version.json"))
	assert root instanceof Map
	assert root.libraries instanceof List
	root.libraries.each {
		assert it.name instanceof String

		println "Handling library ${it.name}..."

		assert it.rules instanceof List || it.rules == null
		assert it.natives instanceof Map || it.natives == null

		String location = it.name
		String natives = parseNatives it

		if (parseRules(it))
		{
			String packagePath = location.split(":")[0]
			String name = location.split(":")[1]
			String version = location.split(":")[2]
			String arch = System.getProperty("os.arch")

			String downloadURL = "https://libraries.minecraft.net/${packagePath.replace(".", "/")}/${name}/${version}/${name}-${version}"
			if (natives == "?")
			{
				downloadURL += ".jar"
				download("${dirNatives}/${name}-${version}.jar", downloadURL)
			}
			else
			{
				downloadURL += "-${it.natives}-${arch}.jar"
				download("${dirNatives}/${name}-${version}-${natives}-${arch}.jar", downloadURL)
			}
		}
	}
}

task getMappings << {
	if (mappingsFile != null && new File(mappingsFile).isFile())
	{
		Files.copy(new File(mappingsFile).toPath(), new File(pathMappings).newOutputStream())
		println "Read mappings from ${mappingsFile}."
	}
	else
	{
		download(pathMappings, "https://bitbucket.org/cuchaz/minecraft-mappings/raw/${mappingsCommit}/${minecraftVersion}.mappings")
		println "Wrote mappings to ${pathMappings}"
	}
}

task deobfMinecraftClient << {
	new File(dirEnigma).mkdir()
	download(pathEnigma, "http://maven.cuchazinteractive.com/cuchaz/enigma-lib/${enigmaVer}/enigma-lib-${enigmaVer}.jar")
	download("${dirEnigma}/guava-18.0.jar", "https://repo1.maven.org/maven2/com/google/guava/guava/18.0/guava-18.0.jar")
	download("${dirEnigma}/javassist-3.19.0-GA.jar", "https://repo1.maven.org/maven2/org/javassist/javassist/3.19.0-GA/javassist-3.19.0-GA.jar")
	download("${dirEnigma}/procyon-fat-0.5.29.jar", "https://bitbucket.org/caellian/procyon/downloads/procyon-fat-0.5.29.jar")
	new File(dirLib).mkdir()
	String pathCleanJar = "${dirLib}/minecraft-${minecraftVersion}-clean.jar",
	       pathTempJar = "${dirLib}/minecraft-${minecraftVersion}-temp.jar",
	       pathDeobfJar = "${dirLib}/minecraft-${minecraftVersion}-client-deobf.jar",
	       pathSrcJar = "${dirLib}/minecraft-${minecraftVersion}-client-deobf-src.jar"
	download(pathCleanJar, versionJAR)
	println "Deobfuscating ${pathTempJar}..."
	exec {
		executable = "java";
		args = ["-cp", pathEnigma + File.pathSeparator + "${dirEnigma}/*", "cuchaz.enigma.CommandMain", "deobfuscate", pathCleanJar, pathTempJar, pathMappings]
	}
	println "Wrote ${pathTempJar}."
	println "Publifying ${pathTempJar}..."
	exec {
		executable = "java";
		args = ["-cp", pathEnigma + File.pathSeparator + "${dirEnigma}/*", "cuchaz.enigma.CommandMain", "publify", pathTempJar, pathDeobfJar]
	}
	println "Wrote ${pathDeobfJar}."
	println "Decompiling ${pathDeobfJar}..."
	File tmp = tasks['deobfMinecraftClient'].temporaryDir
	tmp.mkdir()
	String tmpPath = tmp.getPath()
	exec {
		executable = "java";
		args = ["-cp", pathEnigma + File.pathSeparator + "lib/*", "cuchaz.enigma.CommandMain", "decompile", pathTempJar, tmpPath]
	}
	exec {
		executable = "jar";
		args = ["cf", pathSrcJar, tmpPath]
	}
	tmp.delete()
	println "Wrote ${pathSrcJar}."
}

// Helper methods
static String getOs()
{
	switch (System.getProperty("os.name").toLowerCase())
	{
		case ~/.*(linux|unix|bsd).*/:
			return "linux"
		case ~/.*win.*/:
			return "windows"
		case ~/.*(osx|mac).*/:
			return "osx"
		default:
			return "unknown"
	}
}

static download(String filePath, String dependencyURL)
{
	try
	{
		File file = new File(filePath)
		file.getParentFile().mkdirs();
		if (!file.exists())
		{
			println "Downloading ${dependencyURL}..."
			new URL(dependencyURL).withInputStream { i -> file.withOutputStream { it << i } }
		}
	}
	catch (Exception e)
	{
		println "Unable to download from ${dependencyURL}"
	}
}