Example usage for java.util.zip ZipEntry DEFLATED

Introduction

In this page you can find the example usage for java.util.zip ZipEntry DEFLATED.

Prototype

int DEFLATED

To view the source code for java.util.zip ZipEntry DEFLATED.

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Document

Compression method for compressed (deflated) entries.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    String zipname = "data.zip";
    ZipFile zipFile = new ZipFile(zipname);
    Enumeration enumeration = zipFile.entries();
    while (enumeration.hasMoreElements()) {
        ZipEntry zipEntry = (ZipEntry) enumeration.nextElement();
        System.out.println(zipEntry.getMethod() == ZipEntry.DEFLATED);
    }//from  w w  w . j a  v a2 s. c  om
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    ZipFile zf = new ZipFile("your.zip");
    Enumeration e = zf.entries();
    while (e.hasMoreElements()) {
        ZipEntry ze = (ZipEntry) e.nextElement();
        String name = ze.getName();

        Date lastModified = new Date(ze.getTime());
        long uncompressedSize = ze.getSize();
        long compressedSize = ze.getCompressedSize();

        int method = ze.getMethod();

        if (method == ZipEntry.STORED) {
            System.out.println(name + " was stored at " + lastModified);
            System.out.println("with a size of  " + uncompressedSize + " bytes");
        } else if (method == ZipEntry.DEFLATED) {
            System.out.println(name + " was deflated at " + lastModified);
            System.out.println("from  " + uncompressedSize + " bytes to " + compressedSize
                    + " bytes, a savings of " + (100.0 - 100.0 * compressedSize / uncompressedSize) + "%");
        } else {// ww w.j a v  a 2s .  c om
            System.out.println(name + " was compressed at " + lastModified);
            System.out.println("from  " + uncompressedSize + " bytes to " + compressedSize
                    + " bytes, a savings of " + (100.0 - 100.0 * compressedSize / uncompressedSize) + "%");
        }
    }
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    ZipFile zf = new ZipFile("a.zip");
    Enumeration e = zf.entries();
    while (e.hasMoreElements()) {
        ZipEntry ze = (ZipEntry) e.nextElement();
        String name = ze.getName();

        long uncompressedSize = ze.getSize();
        long compressedSize = ze.getCompressedSize();
        long crc = ze.getCrc();
        int method = ze.getMethod();
        String comment = ze.getComment();

        System.out.println(name + " was stored at " + new Date(ze.getTime()));
        if (method == ZipEntry.STORED) {
            System.out.println("with a size of  " + uncompressedSize + " bytes");
        } else if (method == ZipEntry.DEFLATED) {
            System.out.println("from " + uncompressedSize + " bytes to " + compressedSize);
        } else {//from  ww w  . j a v a  2  s  .  co m
            System.out.println("from " + uncompressedSize + " bytes to " + compressedSize);
        }
        System.out.println("Its CRC is " + crc);
        if (comment != null && !comment.equals("")) {
            System.out.println(comment);
        }
        if (ze.isDirectory()) {
            System.out.println(name + " is a directory");
        }
    }
}

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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();
        Date lastModified = new Date(je.getTime());
        long uncompressedSize = je.getSize();
        long compressedSize = je.getCompressedSize();

        int method = je.getMethod();

        if (method == ZipEntry.STORED) {
            System.out.println(name + " was stored at " + lastModified);
            System.out.println("with a size of  " + uncompressedSize + " bytes");
        } else if (method == ZipEntry.DEFLATED) {
            System.out.println(name + " was deflated at " + lastModified);
            System.out.println("from  " + uncompressedSize + " bytes to " + compressedSize
                    + " bytes, a savings of " + (100.0 - 100.0 * compressedSize / uncompressedSize) + "%");
        } else {/* w ww .j  a  va2  s.co m*/
            System.out.println(name + " was compressed using an unrecognized method at " + lastModified);
            System.out.println("from  " + uncompressedSize + " bytes to " + compressedSize
                    + " bytes, a savings of " + (100.0 - 100.0 * compressedSize / uncompressedSize) + "%");
        }
    }
}

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From source file:MainClass.java

public static void main(String[] args) {

    try {/*from   www  .  ja  v  a2s  . co  m*/
        ZipFile zf = new ZipFile("your.zip");
        Enumeration e = zf.entries();
        while (e.hasMoreElements()) {
            ZipEntry ze = (ZipEntry) e.nextElement();
            String name = ze.getName();

            Date lastModified = new Date(ze.getTime());
            long uncompressedSize = ze.getSize();
            long compressedSize = ze.getCompressedSize();

            int method = ze.getMethod();

            if (method == ZipEntry.STORED) {
                System.out.println(name + " was stored at " + lastModified);
                System.out.println("with a size of  " + uncompressedSize + " bytes");
            } else if (method == ZipEntry.DEFLATED) {
                System.out.println(name + " was deflated at " + lastModified);
                System.out.println("from  " + uncompressedSize + " bytes to " + compressedSize
                        + " bytes, a savings of " + (100.0 - 100.0 * compressedSize / uncompressedSize) + "%");
            } else {
                System.out.println(name + " was compressed using an unrecognized method at " + lastModified);
                System.out.println("from  " + uncompressedSize + " bytes to " + compressedSize
                        + " bytes, a savings of " + (100.0 - 100.0 * compressedSize / uncompressedSize) + "%");
            }
        }
    } catch (IOException ex) {
        System.err.println(ex);
    }
}

---

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   ww  w  .  java 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();
    }
}

---

From source file:Main.java

public void doZip(String filename, String zipfilename) throws Exception {
    byte[] buf = new byte[1024];
    FileInputStream fis = new FileInputStream(filename);
    fis.read(buf, 0, buf.length);/*from  w w w  .j a  v a 2 s  .c o m*/

    CRC32 crc = new CRC32();
    ZipOutputStream s = new ZipOutputStream((OutputStream) new FileOutputStream(zipfilename));
    s.setLevel(6);

    ZipEntry entry = new ZipEntry(filename);
    entry.setSize((long) buf.length);
    entry.setMethod(ZipEntry.DEFLATED);
    crc.reset();
    crc.update(buf);
    entry.setCrc(crc.getValue());
    s.putNextEntry(entry);
    s.write(buf, 0, buf.length);
    s.finish();
    s.close();
}

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From source file:brut.directory.ZipUtils.java

private static void processFolder(final File folder, final ZipOutputStream zipOutputStream,
        final int prefixLength) throws BrutException, IOException {
    for (final File file : folder.listFiles()) {
        if (file.isFile()) {
            final String cleanedPath = BrutIO.sanitizeUnknownFile(folder,
                    file.getPath().substring(prefixLength));
            final ZipEntry zipEntry = new ZipEntry(BrutIO.normalizePath(cleanedPath));

            // aapt binary by default takes in parameters via -0 arsc to list extensions that shouldn't be
            // compressed. We will replicate that behavior
            final String extension = FilenameUtils.getExtension(file.getAbsolutePath());
            if (mDoNotCompress != null
                    && (mDoNotCompress.contains(extension) || mDoNotCompress.contains(zipEntry.getName()))) {
                zipEntry.setMethod(ZipEntry.STORED);
                zipEntry.setSize(file.length());
                BufferedInputStream unknownFile = new BufferedInputStream(new FileInputStream(file));
                CRC32 crc = BrutIO.calculateCrc(unknownFile);
                zipEntry.setCrc(crc.getValue());
                unknownFile.close();/*from   ww w . j  ava2 s .c om*/
            } else {
                zipEntry.setMethod(ZipEntry.DEFLATED);
            }

            zipOutputStream.putNextEntry(zipEntry);
            try (FileInputStream inputStream = new FileInputStream(file)) {
                IOUtils.copy(inputStream, zipOutputStream);
            }
            zipOutputStream.closeEntry();
        } else if (file.isDirectory()) {
            processFolder(file, zipOutputStream, prefixLength);
        }
    }
}

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From source file:JarResources.java

private String dumpZipEntry(ZipEntry ze) {
    StringBuffer sb = new StringBuffer();
    if (ze.isDirectory()) {
        sb.append("d ");
    } else {//from   w  w  w .j  a  v  a 2  s  .c  om
        sb.append("f ");
    }

    if (ze.getMethod() == ZipEntry.STORED) {
        sb.append("stored   ");
    } else {
        sb.append("defalted ");
    }

    sb.append(ze.getName());
    sb.append("\t");
    sb.append("" + ze.getSize());
    if (ze.getMethod() == ZipEntry.DEFLATED) {
        sb.append("/" + ze.getCompressedSize());
    }

    return (sb.toString());
}

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From source file:com.yifanlu.PSXperiaTool.ZpakCreate.java

public void create(boolean noCompress) throws IOException {
    Logger.info("Generating zpak file from directory %s with compression = %b", mDirectory.getPath(),
            !noCompress);/* w  w  w .j a v  a2s .  c o m*/
    IOFileFilter filter = new IOFileFilter() {
        public boolean accept(File file) {
            if (file.getName().startsWith(".")) {
                Logger.debug("Skipping file %s", file.getPath());
                return false;
            }
            return true;
        }

        public boolean accept(File file, String s) {
            if (s.startsWith(".")) {
                Logger.debug("Skipping file %s", file.getPath());
                return false;
            }
            return true;
        }
    };
    Iterator<File> it = FileUtils.iterateFiles(mDirectory, filter, TrueFileFilter.INSTANCE);
    ZipOutputStream out = new ZipOutputStream(mOut);
    out.setMethod(noCompress ? ZipEntry.STORED : ZipEntry.DEFLATED);
    while (it.hasNext()) {
        File current = it.next();
        FileInputStream in = new FileInputStream(current);
        ZipEntry zEntry = new ZipEntry(
                current.getPath().replace(mDirectory.getPath(), "").substring(1).replace("\\", "/"));
        if (noCompress) {
            zEntry.setSize(in.getChannel().size());
            zEntry.setCompressedSize(in.getChannel().size());
            zEntry.setCrc(getCRC32(current));
        }
        out.putNextEntry(zEntry);
        Logger.verbose("Adding file %s", current.getPath());
        int n;
        while ((n = in.read(mBuffer)) != -1) {
            out.write(mBuffer, 0, n);
        }
        in.close();
        out.closeEntry();
    }
    out.close();
    Logger.debug("Done with ZPAK creation.");
}

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