Example usage for java.util.zip GZIPInputStream GZIPInputStream

Introduction

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

Prototype

public GZIPInputStream(InputStream in) throws IOException

Source Link

Document

Creates a new input stream with a default buffer size.

Usage

From source file:Main.java

public static String decompress(byte[] bytes) {
    try {/*from   w ww .  j  a  v a2 s .c o m*/
        InputStream in = new GZIPInputStream(new ByteArrayInputStream(bytes));
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        byte[] buffer = new byte[262144]; // about 300kb
        int len;
        while ((len = in.read(buffer)) > 0)
            baos.write(buffer, 0, len);
        return new String(baos.toByteArray(), "UTF-8");
    } catch (Exception e) {
        return "";
    }
}

From source file:Main.java

public static final byte[] unCompress(byte[] buf) throws IOException {
    GZIPInputStream gzi = new GZIPInputStream(new ByteArrayInputStream(buf));
    ByteArrayOutputStream bos = new ByteArrayOutputStream(buf.length);

    int count;/*  w w w .  ja  v a2  s. c o  m*/
    byte[] tmp = new byte[2048];
    while ((count = gzi.read(tmp)) != -1) {
        bos.write(tmp, 0, count);
    }

    // store uncompressed back to buffer      
    gzi.close();
    return bos.toByteArray();
}

From source file:Main.java

public static byte[] gzipDecodeByteArray(byte[] data) {
    GZIPInputStream gzipInputStream = null;
    try {//from   w w  w . j a  v a 2 s.c o m
        gzipInputStream = new GZIPInputStream(new ByteArrayInputStream(data));

        ByteArrayOutputStream outputStream = new ByteArrayOutputStream(data.length);
        byte[] buffer = new byte[1024];
        while (gzipInputStream.available() > 0) {
            int count = gzipInputStream.read(buffer, 0, 1024);
            if (count > 0) {
                //System.out.println("Read " + count + " bytes");
                outputStream.write(buffer, 0, count);
            }
        }

        outputStream.close();
        gzipInputStream.close();
        return outputStream.toByteArray();
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }
}

From source file:Main.java

public static InputStream buildInputStream(InputStream is, byte type) throws IOException {
    switch (type) {
    case GZIP:/*  w w  w  .j a  v  a  2s.c  om*/
        return new GZIPInputStream(is);
    default:
        return is;
    }
}

From source file:Main.java

public static byte[] unGzip(byte[] data) {
    byte[] b = null;
    try {/*  w w w .j  a v  a2 s. c o m*/
        ByteArrayInputStream bis = new ByteArrayInputStream(data);
        GZIPInputStream gzip = new GZIPInputStream(bis);
        byte[] buf = new byte[1024];
        int num = -1;
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        while ((num = gzip.read(buf, 0, buf.length)) != -1) {
            baos.write(buf, 0, num);
        }
        b = baos.toByteArray();
        baos.flush();
        baos.close();
        gzip.close();
        bis.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return b;
}

From source file:Main.java

public static byte[] gunzip(byte[] data) throws IOException {
    InputStream in = new GZIPInputStream(new ByteArrayInputStream(data));
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    ByteStreams.copy(in, out);//ww w .j a  va2 s.  c om
    return out.toByteArray();
}

From source file:Main.java

public static String descomprimeComGZIP(byte[] bytes, String encoding) {
    String decompressedString = "";
    try {// w  w w.java2s  .  c  o m
        ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
        GZIPInputStream gzip = new GZIPInputStream(bais);
        Reader reader = new InputStreamReader(gzip, encoding);
        StringBuffer sbuf = new StringBuffer();
        char[] buffer = new char[32 * 1024];
        int nread;
        while ((nread = reader.read(buffer)) >= 0) {
            sbuf.append(buffer, 0, nread);
        }
        decompressedString = sbuf.toString();
        reader.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return decompressedString;
}

From source file:Main.java

protected static ByteArrayOutputStream inflate(final FileInputStream pInputStream) throws IOException {
    final ByteArrayOutputStream uncompressed = new ByteArrayOutputStream(ONE_MB);
    final GZIPInputStream zin = new GZIPInputStream(pInputStream);

    int read;/*from   www.  j  a v  a2  s .  c o  m*/
    final byte[] buf = new byte[ONE_MB];
    while ((read = zin.read(buf)) != -1) {
        uncompressed.write(buf, 0, read);
    }

    return uncompressed;
}

From source file:Main.java

public static String decompress(byte[] bytes) {
    if (bytes == null || bytes.length == 0) {
        return "";
    }//  www.  ja  v  a  2  s .co  m
    String outStr = "";
    try {
        final GZIPInputStream gis = new GZIPInputStream(new ByteArrayInputStream(bytes));
        final BufferedReader bf = new BufferedReader(new InputStreamReader(gis, "UTF-8"));
        String line;
        while ((line = bf.readLine()) != null) {
            outStr += line;
        }
        bf.close();
    } catch (final IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    return outStr;
}

From source file:Main.java

/**
 * uncompress the xmlByteArray//from  w w  w. j a v  a 2  s  .c o  m
 */
public static byte[] uncompressByteArray(byte[] xmlByteArray) throws IOException {
    byte[] tmp = new byte[2048];
    int byteCount = 0;
    ByteArrayOutputStream uncompressedData = new ByteArrayOutputStream();
    GZIPInputStream gzipIS = new GZIPInputStream(new ByteArrayInputStream(xmlByteArray));

    while ((byteCount = gzipIS.read(tmp)) != -1) {
        uncompressedData.write(tmp, 0, byteCount);
    }

    return uncompressedData.toByteArray();
}