Example usage for java.util.jar JarOutputStream setMethod

Introduction

In this page you can find the example usage for java.util.jar JarOutputStream setMethod.

Prototype

public void setMethod(int method) 

Source Link

Document

Sets the default compression method for subsequent entries.

Usage

From source file:org.apache.sling.maven.bundlesupport.AbstractBundleDeployMojo.java

/**
 * Change the version in jar/*  www. j  a  v a2s  .c  o m*/
 * 
 * @param newVersion
 * @param file
 * @return
 * @throws MojoExecutionException
 */
protected File changeVersion(File file, String oldVersion, String newVersion) throws MojoExecutionException {
    String fileName = file.getName();
    int pos = fileName.indexOf(oldVersion);
    fileName = fileName.substring(0, pos) + newVersion + fileName.substring(pos + oldVersion.length());

    JarInputStream jis = null;
    JarOutputStream jos;
    OutputStream out = null;
    JarFile sourceJar = null;
    try {
        // now create a temporary file and update the version
        sourceJar = new JarFile(file);
        final Manifest manifest = sourceJar.getManifest();
        manifest.getMainAttributes().putValue("Bundle-Version", newVersion);

        jis = new JarInputStream(new FileInputStream(file));
        final File destJar = new File(file.getParentFile(), fileName);
        out = new FileOutputStream(destJar);
        jos = new JarOutputStream(out, manifest);

        jos.setMethod(JarOutputStream.DEFLATED);
        jos.setLevel(Deflater.BEST_COMPRESSION);

        JarEntry entryIn = jis.getNextJarEntry();
        while (entryIn != null) {
            JarEntry entryOut = new JarEntry(entryIn.getName());
            entryOut.setTime(entryIn.getTime());
            entryOut.setComment(entryIn.getComment());
            jos.putNextEntry(entryOut);
            if (!entryIn.isDirectory()) {
                IOUtils.copy(jis, jos);
            }
            jos.closeEntry();
            jis.closeEntry();
            entryIn = jis.getNextJarEntry();
        }

        // close the JAR file now to force writing
        jos.close();
        return destJar;
    } catch (IOException ioe) {
        throw new MojoExecutionException("Unable to update version in jar file.", ioe);
    } finally {
        if (sourceJar != null) {
            try {
                sourceJar.close();
            } catch (IOException ex) {
                // close
            }
        }
        IOUtils.closeQuietly(jis);
        IOUtils.closeQuietly(out);
    }

}

---

From source file:org.apache.sling.osgi.obr.Repository.java

File spoolModified(InputStream ins) throws IOException {
    JarInputStream jis = new JarInputStream(ins);

    // immediately handle the manifest
    JarOutputStream jos;
    Manifest manifest = jis.getManifest();
    if (manifest == null) {
        throw new IOException("Missing Manifest !");
    }//from  w  w w.  j a v a 2s .com

    String symbolicName = manifest.getMainAttributes().getValue("Bundle-SymbolicName");
    if (symbolicName == null || symbolicName.length() == 0) {
        throw new IOException("Missing Symbolic Name in Manifest !");
    }

    String version = manifest.getMainAttributes().getValue("Bundle-Version");
    Version v = Version.parseVersion(version);
    if (v.getQualifier().indexOf("SNAPSHOT") >= 0) {
        String tStamp;
        synchronized (DATE_FORMAT) {
            tStamp = DATE_FORMAT.format(new Date());
        }
        version = v.getMajor() + "." + v.getMinor() + "." + v.getMicro() + "."
                + v.getQualifier().replaceAll("SNAPSHOT", tStamp);
        manifest.getMainAttributes().putValue("Bundle-Version", version);
    }

    File bundle = new File(this.repoLocation, symbolicName + "-" + v + ".jar");
    OutputStream out = null;
    try {
        out = new FileOutputStream(bundle);
        jos = new JarOutputStream(out, manifest);

        jos.setMethod(JarOutputStream.DEFLATED);
        jos.setLevel(Deflater.BEST_COMPRESSION);

        JarEntry entryIn = jis.getNextJarEntry();
        while (entryIn != null) {
            JarEntry entryOut = new JarEntry(entryIn.getName());
            entryOut.setTime(entryIn.getTime());
            entryOut.setComment(entryIn.getComment());
            jos.putNextEntry(entryOut);
            if (!entryIn.isDirectory()) {
                spool(jis, jos);
            }
            jos.closeEntry();
            jis.closeEntry();
            entryIn = jis.getNextJarEntry();
        }

        // close the JAR file now to force writing
        jos.close();

    } finally {
        IOUtils.closeQuietly(out);
    }

    return bundle;
}

---