Example usage for java.util.jar JarEntry getCrc

Introduction

In this page you can find the example usage for java.util.jar JarEntry getCrc.

Prototype

public long getCrc() 

Source Link

Document

Returns the CRC-32 checksum of the uncompressed entry data.

Usage

From source file:MainClass.java

public static void main(String[] args) throws IOException {

    JarFile jf = new JarFile(args[0]);
    Enumeration e = jf.entries();
    while (e.hasMoreElements()) {
        JarEntry je = (JarEntry) e.nextElement();
        String name = je.getName();

        long crc = je.getCrc();
        System.out.println("Its CRC is " + crc);
        String comment = je.getComment();
        if (comment != null && !comment.equals("")) {
            System.out.println(comment);
        }/*from  w w w  . java 2s.  co  m*/
        if (je.isDirectory()) {
            System.out.println(name + " is a directory");
        }

    }
}

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From source file:Main.java

public static void main(String[] args) throws IOException {
    JarFile jf = new JarFile("a.jar");
    Enumeration e = jf.entries();
    while (e.hasMoreElements()) {
        JarEntry je = (JarEntry) e.nextElement();
        System.out.println(je.getName());
        long uncompressedSize = je.getSize();
        long compressedSize = je.getCompressedSize();
        long crc = je.getCrc();
        int method = je.getMethod();
        String comment = je.getComment();
        System.out.println(new Date(je.getTime()));
        System.out.println("from  " + uncompressedSize + " bytes to " + compressedSize);
        if (method == ZipEntry.STORED) {
            System.out.println("ZipEntry.STORED");
        } else if (method == ZipEntry.DEFLATED) {
            System.out.println(ZipEntry.DEFLATED);
        }//from   w  w  w. j a  v a  2 s  .c  om
        System.out.println("Its CRC is " + crc);
        System.out.println(comment);
        System.out.println(je.isDirectory());

        Attributes a = je.getAttributes();
        if (a != null) {
            Object[] nameValuePairs = a.entrySet().toArray();
            for (int j = 0; j < nameValuePairs.length; j++) {
                System.out.println(nameValuePairs[j]);
            }
        }
        System.out.println();
    }
}

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From source file:com.taobao.android.builder.tools.multidex.mutli.JarRefactor.java

private void copyStream(InputStream inputStream, JarOutputStream jos, JarEntry ze, String pathName) {
    try {//ww w.j ava2s. co m

        ZipEntry newEntry = new ZipEntry(pathName);
        // Make sure there is date and time set.
        if (ze.getTime() != -1) {
            newEntry.setTime(ze.getTime());
            newEntry.setCrc(ze.getCrc()); // If found set it into output file.
        }
        jos.putNextEntry(newEntry);
        IOUtils.copy(inputStream, jos);
        IOUtils.closeQuietly(inputStream);
    } catch (Exception e) {
        //throw new GradleException("copy stream exception", e);
        //e.printStackTrace();
        logger.error("copy stream exception >>> " + pathName + " >>>" + e.getMessage());
    }
}

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From source file:net.sf.keystore_explorer.crypto.signing.JarSigner.java

private static void writeJarEntries(JarFile jar, JarOutputStream jos, String signatureName) throws IOException {

    for (Enumeration<?> jarEntries = jar.entries(); jarEntries.hasMoreElements();) {
        JarEntry jarEntry = (JarEntry) jarEntries.nextElement();
        if (!jarEntry.isDirectory()) {
            String entryName = jarEntry.getName();

            // Signature files not to write across
            String sigFileLocation = MessageFormat.format(METAINF_FILE_LOCATION, signatureName, SIGNATURE_EXT)
                    .toUpperCase();//www .j  a va 2  s .co m
            String dsaSigBlockLocation = MessageFormat.format(METAINF_FILE_LOCATION, signatureName,
                    DSA_SIG_BLOCK_EXT);
            String rsaSigBlockLocation = MessageFormat.format(METAINF_FILE_LOCATION, signatureName,
                    RSA_SIG_BLOCK_EXT);

            // Do not write across existing manifest or matching signature files
            if ((!entryName.equalsIgnoreCase(MANIFEST_LOCATION))
                    && (!entryName.equalsIgnoreCase(sigFileLocation))
                    && (!entryName.equalsIgnoreCase(dsaSigBlockLocation))
                    && (!entryName.equalsIgnoreCase(rsaSigBlockLocation))) {
                // New JAR entry based on original
                JarEntry newJarEntry = new JarEntry(jarEntry.getName());
                newJarEntry.setMethod(jarEntry.getMethod());
                newJarEntry.setCompressedSize(jarEntry.getCompressedSize());
                newJarEntry.setCrc(jarEntry.getCrc());
                jos.putNextEntry(newJarEntry);

                InputStream jis = null;

                try {
                    jis = jar.getInputStream(jarEntry);

                    byte[] buffer = new byte[2048];
                    int read = -1;

                    while ((read = jis.read(buffer)) != -1) {
                        jos.write(buffer, 0, read);
                    }

                    jos.closeEntry();
                } finally {
                    IOUtils.closeQuietly(jis);
                }
            }
        }
    }
}

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From source file:org.apache.pluto.util.assemble.io.JarStreamingAssembly.java

private static JarEntry smartClone(JarEntry originalJarEntry) {
    final JarEntry newJarEntry = new JarEntry(originalJarEntry.getName());
    newJarEntry.setComment(originalJarEntry.getComment());
    newJarEntry.setExtra(originalJarEntry.getExtra());
    newJarEntry.setMethod(originalJarEntry.getMethod());
    newJarEntry.setTime(originalJarEntry.getTime());

    //Must set size and CRC for STORED entries
    if (newJarEntry.getMethod() == ZipEntry.STORED) {
        newJarEntry.setSize(originalJarEntry.getSize());
        newJarEntry.setCrc(originalJarEntry.getCrc());
    }//from   w w  w . j  a  v a 2s . c  om

    return newJarEntry;
}

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From source file:org.jahia.modules.serversettings.portlets.BasePortletHelper.java

static JarEntry cloneEntry(JarEntry originalJarEntry) {
    final JarEntry newJarEntry = new JarEntry(originalJarEntry.getName());
    newJarEntry.setComment(originalJarEntry.getComment());
    newJarEntry.setExtra(originalJarEntry.getExtra());
    newJarEntry.setMethod(originalJarEntry.getMethod());
    newJarEntry.setTime(originalJarEntry.getTime());

    // Must set size and CRC for STORED entries
    if (newJarEntry.getMethod() == ZipEntry.STORED) {
        newJarEntry.setSize(originalJarEntry.getSize());
        newJarEntry.setCrc(originalJarEntry.getCrc());
    }//from  w w  w.j a  v a 2 s  . c o  m

    return newJarEntry;
}

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