[Gradle] Install Eclipse and Plugins

build.gradle

project.ext.tempDir = 'tmp'
project.ext.targetEclipseDir = 'd:/eclipse'

ant.condition(property: "os", value: "windows") { os(family: "windows") }
ant.condition(property: "os", value: "unix" ) { os(family: "unix") }

task clean << { delete 'tmp' }

task installEclipse << {
    new File(tempDir).mkdirs()
    ant.get(dest:tempDir, skipexisting:true){
        url(url:"http://ftp.jaist.ac.jp/pub/eclipse/technology/epp/downloads/release/juno/SR2/eclipse-rcp-juno-SR2-win32.zip")
    }
    ant.unzip(dest:tempDir, overwrite:"false"){
        fileset(dir: project.tempDir){ include (name:'*.zip')}
    }
    ant.move(toDir: project.targetEclipseDir){
        fileset(dir: "${tempDir}/eclipse")
    }
    ant.copy(file:'files/eclipse.ini', toDir: targetEclipseDir)
}

def getCommandList(String command){
    def commandList = [
        "${targetEclipseDir}/eclipse",
        "-application",
        "org.eclipse.equinox.p2.director",
        "-noSplash"
    ]+
    command.replaceAll(/,[^\\]\n/, ',').replaceAll(/[^\\]\n/, ' ').split(/\s+/) +
    [
        "-vmargs",
        "-Dlogback.configurationFile=logback.xml"
    ]

    if(ant.properties.os == 'windows'){
        commandList = ['cmd', '/c']+ commandList
    }
    commandList.flatten()
}

task installPlugins(type:Exec) {
    ext.command = """\
-repository  http://dist.springsource.org/release/GRECLIPSE/e4.2/,^
http://dist.springsource.com/release/TOOLS/gradle^
-installIUs  org.codehaus.groovy.eclipse.feature.feature.group,^
org.springsource.ide.eclipse.gradle.feature.feature.group^
-d ${targetEclipseDir}"""

    commandLine getCommandList(command)
}

installPlugins.mustRunAfter installEclipse

task wrapper(type: Wrapper) { gradleVersion = '1.6' }