com.sap.prd.mobile.ios.mios.ScriptRunner.java Source code

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Here is the source code for com.sap.prd.mobile.ios.mios.ScriptRunner.java

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/*
 * #%L
 * xcode-maven-plugin
 * %%
 * Copyright (C) 2012 SAP AG
 * %%
 * 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.
 * #L%
 */
package com.sap.prd.mobile.ios.mios;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;

public class ScriptRunner {
    /**
     * 
     * @param script
     *          The script file that should be executed. Must be located inside the class path.
     * @throws IOException
     */
    public static int copyAndExecuteScript(PrintStream out, String script, File workingDirectory, String... args)
            throws IOException {
        File scriptFile = copyScript(script, workingDirectory);
        return execute(out, scriptFile, args);
    }

    private static File copyScript(String script, File workingDirectory) throws IOException {
        if (!workingDirectory.exists())
            if (!workingDirectory.mkdirs())
                throw new IOException("Cannot create directory '" + workingDirectory + "'.");

        final File scriptFile = new File(workingDirectory, getScriptFileName(script));
        scriptFile.deleteOnExit();

        OutputStream os = null;
        InputStream is = null;

        try {
            is = ScriptRunner.class.getResourceAsStream(script);

            if (is == null)
                throw new FileNotFoundException(script + " not found.");

            os = FileUtils.openOutputStream(scriptFile);

            IOUtils.copy(is, os);
        } finally {
            IOUtils.closeQuietly(is);
            IOUtils.closeQuietly(os);
        }

        Forker.forkProcess(System.out, null, "chmod", "755", scriptFile.getCanonicalPath());
        return scriptFile;
    }

    private static String getScriptFileName(String script) {
        String[] split = script.split("/");
        return split[split.length - 1];
    }

    private static int execute(PrintStream out, File scriptFile, String... args) throws IOException {
        String[] _args = new String[args.length + 1];
        System.arraycopy(args, 0, _args, 1, args.length);
        _args[0] = scriptFile.getCanonicalPath();

        return Forker.forkProcess(out, null, _args);
    }
}