Example usage for java.util.zip ZipInputStream read

Introduction

In this page you can find the example usage for java.util.zip ZipInputStream read.

Prototype

public int read(byte[] b, int off, int len) throws IOException 

Source Link

Document

Reads from the current ZIP entry into an array of bytes.

Usage

From source file:org.n52.wps.io.IOUtils.java

public static List<File> unzipAll(File file) throws IOException {
    int bufferLength = 2048;
    byte buffer[] = new byte[bufferLength];
    List<File> foundFiles = new ArrayList<File>();
    ZipInputStream zipInputStream = new ZipInputStream(new BufferedInputStream(new FileInputStream(file)));
    ZipEntry entry;// www .  j  ava 2s.co m
    File tempDir = File.createTempFile("unzipped" + UUID.randomUUID(), "",
            new File(System.getProperty("java.io.tmpdir")));
    tempDir.delete();
    tempDir.mkdir();
    while ((entry = zipInputStream.getNextEntry()) != null) {
        int count;
        File entryFile = new File(tempDir, entry.getName());
        entryFile.createNewFile();
        FileOutputStream fos = new FileOutputStream(entryFile);
        BufferedOutputStream dest = new BufferedOutputStream(fos, bufferLength);
        while ((count = zipInputStream.read(buffer, 0, bufferLength)) != -1) {
            dest.write(buffer, 0, count);
        }
        dest.flush();
        dest.close();

        foundFiles.add(entryFile);

    }

    zipInputStream.close();

    deleteResources(file);

    return foundFiles;
}

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From source file:com.sangupta.jerry.util.ZipUtils.java

/**
 * Read a given file from the ZIP file and store it in a temporary file. The
 * temporary file is set to be deleted on exit of application.
 * /*  w w  w. j a v a  2  s .c  om*/
 * @param zipFile
 *            the zip file from which the file needs to be read
 * 
 * @param fileName
 *            the name of the file that needs to be extracted
 * 
 * @return the {@link File} handle for the extracted file in the temp
 *         directory
 * 
 * @throws IllegalArgumentException
 *             if the zipFile is <code>null</code> or the fileName is
 *             <code>null</code> or empty.
 */
public static File readFileFromZip(File zipFile, String fileName) throws FileNotFoundException, IOException {
    if (zipFile == null) {
        throw new IllegalArgumentException("zip file to extract from cannot be null");
    }

    if (AssertUtils.isEmpty(fileName)) {
        throw new IllegalArgumentException("the filename to extract cannot be null/empty");
    }

    LOGGER.debug("Reading {} from {}", fileName, zipFile.getAbsolutePath());

    ZipInputStream stream = null;
    BufferedOutputStream outStream = null;
    File tempFile = null;

    try {
        byte[] buf = new byte[1024];
        stream = new ZipInputStream(new FileInputStream(zipFile));
        ZipEntry entry;
        while ((entry = stream.getNextEntry()) != null) {
            String entryName = entry.getName();
            if (entryName.equals(fileName)) {
                tempFile = File.createTempFile(FilenameUtils.getName(entryName),
                        FilenameUtils.getExtension(entryName));
                tempFile.deleteOnExit();

                outStream = new BufferedOutputStream(new FileOutputStream(tempFile));
                int readBytes;
                while ((readBytes = stream.read(buf, 0, 1024)) > -1) {
                    outStream.write(buf, 0, readBytes);
                }

                stream.close();
                outStream.close();

                return tempFile;
            }
        }
    } finally {
        IOUtils.closeQuietly(stream);
        IOUtils.closeQuietly(outStream);
    }

    return tempFile;
}

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From source file:hu.sztaki.lpds.pgportal.services.dspace.DSpaceUtil.java

/**
 * Extracts any file from <code>inputFile</code> that begins with
 * 'bitstream' to <code>outputFile</code>.
 * Adapted from examples on/*from  w  w w. j  a  v a  2 s .c  o  m*/
 * http://java.sun.com/developer/technicalArticles/Programming/compression/
 *
 * @param inputFile  File to extract 'bitstream...' from
 * @param outputFile  File to extract 'bitstream...' to
 */
private static void unzipBitstream(InputStream is, File outputFile) throws IOException {
    final int BUFFER = 2048;
    BufferedOutputStream dest = null;
    ZipInputStream zis = new ZipInputStream(is);
    ZipEntry entry;
    try {

        while ((entry = zis.getNextEntry()) != null) {
            if (entry.getName().matches("bitstream.*")) {
                int count;
                byte data[] = new byte[BUFFER];

                // write the files to the disk
                FileOutputStream fos = new FileOutputStream(outputFile.getAbsoluteFile());
                dest = new BufferedOutputStream(fos, BUFFER);
                while ((count = zis.read(data, 0, BUFFER)) != -1) {
                    dest.write(data, 0, count);
                    //System.out.println("Writing: " + outputFile.getAbsoluteFile());
                }
                dest.flush();
                dest.close();
            }
        }
    } finally {
        zis.close();
        try {
            dest.close();
        } catch (Exception e) {
        }
    }
}

---

From source file:org.semanticsoft.vaaclipsedemo.cassandra.app.CassandraActivator.java

static public void extractFolder(File destPath, InputStream inputStream) throws ZipException, IOException {
    int BUFFER = 2048;
    ZipInputStream zis = new ZipInputStream(new BufferedInputStream(inputStream));

    ZipEntry entry;//w ww. j a v a2 s  .c o m
    // Process each entry
    while ((entry = zis.getNextEntry()) != null) {
        // grab a zip file entry
        String currentEntry = entry.getName();
        File destCatalog = new File(destPath, currentEntry);
        // destFile = new File(newPath, destFile.getName());
        File destinationParent = destCatalog.getParentFile();

        // create the parent directory structure if needed
        destinationParent.mkdirs();

        if (!entry.isDirectory()) {
            int count;
            byte data[] = new byte[BUFFER];
            // write the files to the disk
            FileOutputStream fos = new FileOutputStream(destCatalog);
            BufferedOutputStream dest = new BufferedOutputStream(fos, BUFFER);
            while ((count = zis.read(data, 0, BUFFER)) != -1) {
                dest.write(data, 0, count);
            }
            dest.flush();
            dest.close();
        }
    }
}

---

From source file:org.lunifera.examples.vaaclipse.demo1.e4.Demo1Activator.java

public static void extractFolder(File destPath, InputStream inputStream) throws ZipException, IOException {
    int BUFFER = 2048;
    ZipInputStream zis = new ZipInputStream(new BufferedInputStream(inputStream));

    ZipEntry entry;/*from   ww w . j  a  va  2 s  . co m*/
    // Process each entry
    while ((entry = zis.getNextEntry()) != null) {
        // grab a zip file entry
        String currentEntry = entry.getName();
        File destCatalog = new File(destPath, currentEntry);
        // destFile = new File(newPath, destFile.getName());
        File destinationParent = destCatalog.getParentFile();

        // create the parent directory structure if needed
        destinationParent.mkdirs();

        if (!entry.isDirectory()) {
            int count;
            byte data[] = new byte[BUFFER];
            // write the files to the disk
            FileOutputStream fos = new FileOutputStream(destCatalog);
            BufferedOutputStream dest = new BufferedOutputStream(fos, BUFFER);
            while ((count = zis.read(data, 0, BUFFER)) != -1) {
                dest.write(data, 0, count);
            }
            dest.flush();
            dest.close();
        }
    }
}

---

From source file:org.dita2indesign.cmdline.Docx2Xml.java

/**
* @param zipInFile/*from  w ww.j  a v  a  2s.  c  o m*/
*            Zip file to be unzipped
* @param outputDir
*            Directory to which the zipped files will be unpacked.
* @throws Exception 
* @throws ZipException 
*/
public static void unzip(File zipInFile, File outputDir) throws Exception {

    Enumeration<? extends ZipEntry> entries;
    ZipFile zipFile = new ZipFile(zipInFile);
    ZipInputStream zipInputStream = new ZipInputStream(new FileInputStream(zipInFile));
    ZipEntry entry = (ZipEntry) zipInputStream.getNextEntry();

    File curOutDir = outputDir;
    while (entry != null) {

        if (entry.isDirectory()) {
            // This is not robust, just for demonstration purposes.
            curOutDir = new File(curOutDir, entry.getName());
            curOutDir.mkdirs();
            continue;
        }

        File outFile = new File(curOutDir, entry.getName());
        File tempDir = outFile.getParentFile();
        if (!tempDir.exists())
            tempDir.mkdirs();
        outFile.createNewFile();
        BufferedOutputStream outstream = new BufferedOutputStream(new FileOutputStream(outFile));

        int n;
        byte[] buf = new byte[1024];
        while ((n = zipInputStream.read(buf, 0, 1024)) > -1)
            outstream.write(buf, 0, n);
        outstream.flush();
        outstream.close();
        zipInputStream.closeEntry();
        entry = zipInputStream.getNextEntry();
    }
    zipInputStream.close();

    zipFile.close();
}

---

From source file:org.n52.wps.io.IOUtils.java

public static List<File> unzip(File file, String extension, File directory) throws IOException {
    int bufferLength = 2048;
    byte buffer[] = new byte[bufferLength];
    List<File> foundFiles = new ArrayList<File>();
    ZipInputStream zipInputStream = new ZipInputStream(new BufferedInputStream(new FileInputStream(file)));
    ZipEntry entry;/*from  w  w w. j  a  v a  2s . co  m*/
    File tempDir = directory;
    if (tempDir == null || !directory.isDirectory()) {
        tempDir = File.createTempFile("unzipped" + UUID.randomUUID(), "",
                new File(System.getProperty("java.io.tmpdir")));
        tempDir.delete();
        tempDir.mkdir();
    }
    while ((entry = zipInputStream.getNextEntry()) != null) {
        int count;
        File entryFile = new File(tempDir, entry.getName());
        entryFile.createNewFile();
        FileOutputStream fos = new FileOutputStream(entryFile);
        BufferedOutputStream dest = new BufferedOutputStream(fos, bufferLength);
        while ((count = zipInputStream.read(buffer, 0, bufferLength)) != -1) {
            dest.write(buffer, 0, count);
        }
        dest.flush();
        dest.close();

        if (entry.getName().endsWith("." + extension)) {
            foundFiles.add(entryFile);

        }
    }

    zipInputStream.close();

    deleteResources(file);

    return foundFiles;
}

---

From source file:net.ftb.util.FileUtils.java

/**
 * Extracts given zip to given location//from   w  w  w  . j  a  va2s . c o  m
 * @param zipLocation - the location of the zip to be extracted
 * @param outputLocation - location to extract to
 */
public static void extractZipTo(String zipLocation, String outputLocation) {
    ZipInputStream zipinputstream = null;
    try {
        byte[] buf = new byte[1024];
        zipinputstream = new ZipInputStream(new FileInputStream(zipLocation));
        ZipEntry zipentry = zipinputstream.getNextEntry();
        while (zipentry != null) {
            String entryName = zipentry.getName();
            int n;
            if (!zipentry.isDirectory() && !entryName.equalsIgnoreCase("minecraft")
                    && !entryName.equalsIgnoreCase(".minecraft") && !entryName.equalsIgnoreCase("instMods")) {
                new File(outputLocation + File.separator + entryName).getParentFile().mkdirs();
                FileOutputStream fileoutputstream = new FileOutputStream(
                        outputLocation + File.separator + entryName);
                while ((n = zipinputstream.read(buf, 0, 1024)) > -1) {
                    fileoutputstream.write(buf, 0, n);
                }
                fileoutputstream.close();
            }
            zipinputstream.closeEntry();
            zipentry = zipinputstream.getNextEntry();
        }
    } catch (Exception e) {
        Logger.logError("Error while extracting zip", e);
        backupExtract(zipLocation, outputLocation);
    } finally {
        try {
            zipinputstream.close();
        } catch (IOException e) {
        }
    }
}

---

From source file:de.uka.ilkd.key.dl.gui.initialdialog.gui.ToolInstaller.java

/**
 * @param tmp// w  w  w .  j  a va 2  s . c om
 * @param
 * @throws FileNotFoundException
 * @throws IOException
 */
private static void unzip(File file, File dir, PropertySetter ps, JProgressBar bar)
        throws FileNotFoundException, IOException {
    final int BUFFER = 2048;
    BufferedOutputStream dest = null;
    FileInputStream fis = new FileInputStream(file);
    ZipInputStream zis = new ZipInputStream(new BufferedInputStream(fis));
    ZipEntry entry;
    int value = 0;
    while ((entry = zis.getNextEntry()) != null) {
        bar.setValue(value++);
        int count;
        byte data[] = new byte[BUFFER];
        // write the files to the disk
        String outputFile = dir.getAbsolutePath() + File.separator + entry.getName();
        if (entry.isDirectory()) {
            new File(outputFile).mkdirs();
        } else {
            FileOutputStream fos = new FileOutputStream(outputFile);
            dest = new BufferedOutputStream(fos, BUFFER);
            while ((count = zis.read(data, 0, BUFFER)) != -1) {
                dest.write(data, 0, count);
            }
            dest.flush();
            dest.close();
            File oFile = new File(outputFile);
            if (OSInfosDefault.INSTANCE.getOs() == OperatingSystem.OSX) {
                // FIXME: we need to make everything executable as somehow
                // the executable bit is not preserved in
                // OSX
                oFile.setExecutable(true);
            }
            if (ps.filterFilename(oFile)) {
                ps.setProperty(outputFile);
            }
        }
    }
    zis.close();
    file.delete();
}

---

From source file:org.exoplatform.services.cms.impl.Utils.java

/**
 * This function is used to get the version history data which is kept inside the xml files
 * @param versionHistorySourceStream//from   ww w.jav  a  2 s.com
 * @return a map saving version history data with format: [file name, version history data]
 * @throws IOException
 */
private static Map<String, byte[]> getVersionHistoryData(InputStream versionHistorySourceStream)
        throws IOException {
    Map<String, byte[]> mapVersionHistoryData = new HashMap<String, byte[]>();
    ZipInputStream zipInputStream = new ZipInputStream(new BufferedInputStream(versionHistorySourceStream));
    byte[] data = new byte[1024];
    ZipEntry entry = zipInputStream.getNextEntry();
    while (entry != null) {
        //get binary data inside the zip entry
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        int available = -1;
        while ((available = zipInputStream.read(data, 0, 1024)) > -1) {
            out.write(data, 0, available);
        }

        //save data into map
        mapVersionHistoryData.put(entry.getName(), out.toByteArray());

        //go to next entry
        out.close();
        zipInputStream.closeEntry();
        entry = zipInputStream.getNextEntry();
    }

    zipInputStream.close();
    return mapVersionHistoryData;
}

---

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