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:Main.java

public static void main(String[] args) throws Exception {
    String zipname = "d.zip";
    CheckedInputStream checksum = new CheckedInputStream(new FileInputStream(zipname), new Adler32());
    ZipInputStream zis = new ZipInputStream(new BufferedInputStream(checksum));
    ZipEntry entry;//from   w w  w .j av  a  2 s .c om

    while ((entry = zis.getNextEntry()) != null) {
        System.out.println("Unzipping: " + entry.getName());
        int size;
        byte[] buffer = new byte[2048];

        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(entry.getName()),
                buffer.length);
        while ((size = zis.read(buffer, 0, buffer.length)) != -1) {
            bos.write(buffer, 0, size);
        }
        bos.flush();
        bos.close();
    }

    zis.close();
    System.out.println("Checksum = " + checksum.getChecksum().getValue());
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    String zipname = "data.zip";
    FileInputStream fis = new FileInputStream(zipname);
    ZipInputStream zis = new ZipInputStream(new BufferedInputStream(fis));
    ZipEntry entry;//from   w  w  w .j ava2  s  .  c o  m

    while ((entry = zis.getNextEntry()) != null) {
        System.out.println("Unzipping: " + entry.getName());

        int size;
        byte[] buffer = new byte[2048];

        FileOutputStream fos = new FileOutputStream(entry.getName());
        BufferedOutputStream bos = new BufferedOutputStream(fos, buffer.length);

        while ((size = zis.read(buffer, 0, buffer.length)) != -1) {
            bos.write(buffer, 0, size);
        }
        bos.flush();
        bos.close();
    }
    zis.close();
    fis.close();
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    String destinationname = "d:\\";
    byte[] buf = new byte[1024];
    ZipInputStream zipinputstream = null;
    ZipEntry zipentry;//from  w ww. ja v  a2s.  co m
    zipinputstream = new ZipInputStream(new FileInputStream("fileName"));
    zipentry = zipinputstream.getNextEntry();
    while (zipentry != null) {
        String entryName = zipentry.getName();
        FileOutputStream fileoutputstream;
        File newFile = new File(entryName);
        String directory = newFile.getParent();

        if (directory == null) {
            if (newFile.isDirectory())
                break;
        }
        fileoutputstream = new FileOutputStream(destinationname + entryName);
        int n;
        while ((n = zipinputstream.read(buf, 0, 1024)) > -1) {
            fileoutputstream.write(buf, 0, n);
        }
        fileoutputstream.close();
        zipinputstream.closeEntry();
        zipentry = zipinputstream.getNextEntry();
    }
    zipinputstream.close();
}

---

From source file:Main.java

public static byte[] unZip(byte[] bContent) {
    byte[] b = null;
    try {/*from  w w w. j  a v a 2  s.com*/
        ByteArrayInputStream bis = new ByteArrayInputStream(bContent);
        ZipInputStream zip = new ZipInputStream(bis);
        while (zip.getNextEntry() != null) {
            byte[] buf = new byte[1024];
            int num = -1;
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            while ((num = zip.read(buf, 0, buf.length)) != -1) {
                baos.write(buf, 0, num);
            }
            b = baos.toByteArray();
            baos.flush();
            baos.close();
        }
        zip.close();
        bis.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return b;
}

---

From source file:Main.java

public static byte[] unZip(byte[] data) {
    byte[] b = null;
    try {/*  w w  w .ja  v  a  2s.co m*/
        ByteArrayInputStream bis = new ByteArrayInputStream(data);
        ZipInputStream zip = new ZipInputStream(bis);
        while (zip.getNextEntry() != null) {
            byte[] buf = new byte[1024];
            int num = -1;
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            while ((num = zip.read(buf, 0, buf.length)) != -1) {
                baos.write(buf, 0, num);
            }
            b = baos.toByteArray();
            baos.flush();
            baos.close();
        }
        zip.close();
        bis.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return b;
}

---

From source file:Main.java

public static byte[] unZip(byte[] bContent) throws IOException {
    byte[] b = null;
    try {//  w  ww . j  a va 2  s.  co m
        ByteArrayInputStream bis = new ByteArrayInputStream(bContent);
        ZipInputStream zip = new ZipInputStream(bis);

        while (zip.getNextEntry() != null) {
            byte[] buf = new byte[1024];
            int num = -1;
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            while ((num = zip.read(buf, 0, buf.length)) != -1) {
                baos.write(buf, 0, num);
            }
            b = baos.toByteArray();
            baos.flush();
            baos.close();
        }
        zip.close();
        bis.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return b;
}

---

From source file:ch.rgw.compress.CompEx.java

public static byte[] expand(InputStream in) {
    ByteArrayOutputStream baos;//from ww w  .j  av a 2 s  . c o m
    byte[] siz = new byte[4];
    try {
        in.read(siz);
        long size = BinConverter.byteArrayToInt(siz, 0);
        long typ = size & ~0x1fffffff;
        size &= 0x1fffffff;
        byte[] ret = new byte[(int) size];

        switch ((int) typ) {
        case BZIP2:
            CBZip2InputStream bzi = new CBZip2InputStream(in);
            int off = 0;
            int l = 0;
            while ((l = bzi.read(ret, off, ret.length - off)) > 0) {
                off += l;
            }

            bzi.close();
            in.close();
            return ret;
        case GLZ:
            GLZ glz = new GLZ();
            baos = new ByteArrayOutputStream();
            glz.expand(in, baos);
            return baos.toByteArray();
        case HUFF:
            HuffmanInputStream hin = new HuffmanInputStream(in);
            off = 0;
            l = 0;
            while ((l = hin.read(ret, off, ret.length - off)) > 0) {
                off += l;
            }
            hin.close();
            return ret;
        case ZIP:
            ZipInputStream zi = new ZipInputStream(in);
            zi.getNextEntry();
            off = 0;
            l = 0;
            while ((l = zi.read(ret, off, ret.length - off)) > 0) {
                off += l;
            }

            zi.close();
            return ret;
        default:
            throw new Exception("Invalid compress format");
        }
    } catch (Exception ex) {
        ExHandler.handle(ex);
        return null;
    }

}

---

From source file:nl.clockwork.common.util.Utils.java

public static byte[] unzip(byte[] content) throws IOException {
    int BUFFER_SIZE = 2048;
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    ZipInputStream zin = new ZipInputStream(new ByteArrayInputStream(content));
    ZipEntry entry = zin.getNextEntry();
    if (entry != null) {
        int count;
        byte buffer[] = new byte[BUFFER_SIZE];
        BufferedOutputStream bout = new BufferedOutputStream(out, BUFFER_SIZE);
        while ((count = zin.read(buffer, 0, BUFFER_SIZE)) != -1)
            bout.write(buffer, 0, count);
        bout.flush();/*from w  ww  . j  a va  2  s  . c o m*/
        bout.close();
        zin.close();
    }
    return out.toByteArray();
}

---

From source file:org.openecomp.sdc.common.util.ZipUtil.java

public static byte[] unzip(byte[] zipped) {
    ZipInputStream zipinputstream = null;
    ByteArrayOutputStream outputStream = null;
    try {/* w  w  w  .j  av  a 2  s .co m*/
        byte[] buf = new byte[1024];

        zipinputstream = new ZipInputStream(new ByteArrayInputStream(zipped));
        ZipEntry zipentry = zipinputstream.getNextEntry();
        outputStream = new ByteArrayOutputStream();
        int n;
        while ((n = zipinputstream.read(buf, 0, 1024)) > -1) {
            outputStream.write(buf, 0, n);
        }

        return outputStream.toByteArray();
    } catch (Exception e) {
        throw new IllegalStateException("Can't unzip input stream", e);
    } finally {
        if (outputStream != null) {
            try {
                outputStream.close();
            } catch (IOException e) {
                log.debug("Failed to close output stream", e);
            }
        }
        if (zipinputstream != null) {
            try {
                zipinputstream.closeEntry();
                zipinputstream.close();
            } catch (IOException e) {
                log.debug("Failed to close zip input stream", e);
            }
        }
    }
}

---

From source file:net.grinder.util.LogCompressUtils.java

/**
 * Decompress the given the {@link InputStream} into the given {@link OutputStream}.
 *
 * @param inputStream  input stream of the compressed file
 * @param outputStream file to be written
 * @param limit        the limit of the output
 *//*  www .j  a va  2s. c om*/
public static void decompress(InputStream inputStream, OutputStream outputStream, long limit) {
    ZipInputStream zipInputStream = null;
    try {
        zipInputStream = new ZipInputStream(inputStream);
        byte[] buffer = new byte[COMPRESS_BUFFER_SIZE];
        int count;
        long total = 0;
        checkNotNull(zipInputStream.getNextEntry(), "In zip, it should have at least one entry");
        do {
            while ((count = zipInputStream.read(buffer, 0, COMPRESS_BUFFER_SIZE)) != -1) {
                total += count;
                if (total >= limit) {
                    break;
                }
                outputStream.write(buffer, 0, count);
            }
        } while (zipInputStream.getNextEntry() != null);
        outputStream.flush();
    } catch (IOException e) {
        LOGGER.error("Error occurs while decompressing {}", e.getMessage());
        LOGGER.debug("Details : ", e);
    } finally {
        IOUtils.closeQuietly(zipInputStream);
    }
}

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