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

static public byte[] gunzip(byte src[], byte default_value[]) {
    try {/* w  w w .  j  a  va2  s. c  o  m*/
        if (src == null)
            return default_value;

        ByteArrayOutputStream out = new ByteArrayOutputStream();

        GZIPInputStream in = new GZIPInputStream(new ByteArrayInputStream(src));

        IOUtils.copy(in, out);

        in.close();
        out.close();

        return out.toByteArray();
    } catch (Exception e) {
        return default_value;
    }
}

From source file:Main.java

public static InputStream getInputEncoding(URLConnection connection) throws IOException {
    InputStream in;/*from   w w w  .  j a v a 2 s. c o  m*/
    String encoding = connection.getContentEncoding();
    if (encoding != null && encoding.equalsIgnoreCase("gzip")) {
        in = new GZIPInputStream(connection.getInputStream());
    } else if (encoding != null && encoding.equalsIgnoreCase("deflate")) {
        in = new InflaterInputStream(connection.getInputStream(), new Inflater(true));
    } else {
        in = connection.getInputStream();
    }
    return in;
}

From source file:Main.java

/**
 * TODO Finish JavaDoc/*from w w  w  . j a  v a2 s.  co m*/
 *
 * @param byteArray
 * @return
 */
public static String decompress(byte[] byteArray) {

    StringBuilder stringBuilder = new StringBuilder();
    String line;
    try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(
            new GZIPInputStream(new ByteArrayInputStream(byteArray)), StandardCharsets.UTF_8))) {
        while ((line = bufferedReader.readLine()) != null) {
            stringBuilder.append(line);
        }
    } catch (IOException e) {
        e.printStackTrace();
    }

    return stringBuilder.toString();
}

From source file:Main.java

private static void decompressGzipFile(String gzipFile) {
    try {/*from  w  w w .  j av a 2s.c o  m*/
        File newFile = new File(Environment.getExternalStorageDirectory() + File.separator + "FlockLoad");
        FileInputStream fis = new FileInputStream(gzipFile);
        GZIPInputStream gis = new GZIPInputStream(fis);
        FileOutputStream fos = new FileOutputStream(newFile);
        byte[] buffer = new byte[1024];
        int len;
        while ((len = gis.read(buffer)) != -1) {
            fos.write(buffer, 0, len);
        }
        //close resources
        fos.close();
        gis.close();
    } catch (IOException e) {
        e.printStackTrace();
    }

}

From source file:Main.java

public static byte[] decompressGzip(byte[] compressed) throws IOException {
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    ByteArrayInputStream bis = new ByteArrayInputStream(compressed);
    GZIPInputStream gis = new GZIPInputStream(bis);
    try {/*  w w  w.  ja  v a2s .  c o m*/
        byte[] buffer = new byte[READ_BUFFER_SIZE];
        int read = 0;
        while ((read = gis.read(buffer)) != -1) {
            bos.write(buffer, 0, read);
        }
    } finally {
        gis.close();
    }

    return bos.toByteArray();
}

From source file:Main.java

public static byte[] decompress(byte[] bytes) throws IOException {

    GZIPInputStream gzip = null;/*from w w  w  .j a v  a 2 s.com*/
    ByteArrayOutputStream baos = null;
    try {
        baos = new ByteArrayOutputStream();

        gzip = new GZIPInputStream(new ByteArrayInputStream(bytes));

        int len = 0;
        byte data[] = new byte[BUFFER_SIZE];

        while ((len = gzip.read(data, 0, BUFFER_SIZE)) != -1) {
            baos.write(data, 0, len);
        }

        gzip.close();
        baos.flush();

        return baos.toByteArray();

    } finally {
        if (gzip != null) {
            gzip.close();
        }
        if (baos != null) {
            baos.close();
        }
    }
}

From source file:Main.java

/**
 * Decompresses a array of bytes back into a string.
 *
 * @param bytes The compressed list of bytes.
 *
 * @return The string uncompress./*from w w  w  . j ava2  s.c  o m*/
 *
 * @throws Exception If failed to uncompress.
 */
public static String decompress(byte[] bytes) throws Exception {
    if (bytes == null || bytes.length == 0) {
        return null;
    }

    GZIPInputStream gis = new GZIPInputStream(new ByteArrayInputStream(bytes));
    BufferedReader bf = new BufferedReader(new InputStreamReader(gis, "UTF-8"));
    StringBuilder result = new StringBuilder();
    String line;

    while ((line = bf.readLine()) != null) {
        result.append(line);
    }

    return result.toString();
}

From source file:Main.java

/**
 * Descomprime uma string utilizando o GZIP
 * /*from   w w  w . j  a  v a  2  s. com*/
 * @param str
 * @param encoding
 * @return
 */
public static String gzipDecompress(byte[] bytes, String encoding) {
    String decompressedString = "";

    try {
        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

public static byte[] decompressInGzip(byte[] compressData, int offset, int length) throws Exception {

    ByteArrayInputStream bis = new ByteArrayInputStream(compressData, offset, length);
    GZIPInputStream gzipInStream = new GZIPInputStream(bis);

    ByteArrayOutputStream bos = new ByteArrayOutputStream();

    int count;//w w w .  j av a  2s. c  o  m
    byte[] buf = new byte[1024];
    while ((count = gzipInStream.read(buf)) > 0) {
        bos.write(buf, 0, count);
    }
    gzipInStream.close();

    byte[] originalData = bos.toByteArray();
    bos.close();

    return originalData;
}

From source file:Main.java

public static byte[] unzip(byte[] output) {
    if (output == null || output.length == 0) {
        return output;
    }/*from   w  ww.  jav  a  2  s .com*/
    try {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        ByteArrayInputStream in = new ByteArrayInputStream(output);
        GZIPInputStream gunzip = new GZIPInputStream(in);
        byte[] buffer = new byte[BUFFER_SIZE];
        int ret;
        while ((ret = gunzip.read(buffer)) >= 0) {
            out.write(buffer, 0, ret);
        }
        gunzip.close();
        return out.toByteArray();
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}