GroovyWrapper.groovy

/*
 * Copyright 2002-2007 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * Wrap a script and groovy jars to an executable jar
 */
def cli = new CliBuilder()
cli.h(longOpt: 'help', required: false, 'show usage information')
cli.d(longOpt: 'destfile', argName: 'destfile', required: false, args: 1, 'jar destintation filename, defaults to {mainclass}.jar')
cli.m(longOpt: 'mainclass', argName: 'mainclass', required: true, args: 1, 'fully qualified main class, eg. HelloWorld')
cli.c(longOpt: 'groovyc', required: false, 'Run groovyc')

//--------------------------------------------------------------------------
def opt = cli.parse(args)
if (!opt) { return }
if (opt.h) {
    cli.usage();
    return
}

def mainClass = opt.m
def scriptBase = mainClass.replace('.', '/')
def scriptFile = new File(scriptBase + '.groovy')
if (!scriptFile.canRead()) {
    println "Cannot read script file: '${scriptFile}'"
    return
}
def destFile = scriptBase + '.jar'
if (opt.d) {
    destFile = opt.d
}

//--------------------------------------------------------------------------
def ant = new AntBuilder()

if (opt.c) {
    ant.echo("Compiling ${scriptFile}")
    org.codehaus.groovy.tools.FileSystemCompiler.main([scriptFile] as String[])
}

def GROOVY_HOME = new File(System.getenv('GROOVY_HOME'))
if (!GROOVY_HOME.canRead()) {
    ant.echo("Missing environment variable GROOVY_HOME: '${GROOVY_HOME}'")
    return
}

ant.jar(destfile: destFile, compress: true, index: true) {
    fileset(dir: '.', includes: scriptBase + '*.class')

    zipgroupfileset(dir: GROOVY_HOME, includes: 'embeddable/groovy-all-*.jar')
    zipgroupfileset(dir: GROOVY_HOME, includes: 'lib/*.jar')
    // add more jars here

    manifest {
        attribute(name: 'Main-Class', value: mainClass)
    }
}

ant.echo("Run script using: \'java -jar ${destFile} ...\'")