Example usage for java.util.zip GZIPInputStream read

Introduction

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

Prototype

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

Source Link

Document

Reads uncompressed data into an array of bytes.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    int sChunk = 8192;

    String zipname = "a.txt.gz";
    String source = "a.txt";
    FileInputStream in = new FileInputStream(zipname);
    GZIPInputStream zipin = new GZIPInputStream(in);
    byte[] buffer = new byte[sChunk];
    FileOutputStream out = new FileOutputStream(source);
    int length;/*from w ww.  j a v a  2  s. c  o m*/
    while ((length = zipin.read(buffer, 0, sChunk)) != -1)
        out.write(buffer, 0, length);
    out.close();
    zipin.close();
}

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From source file:MainClass.java

public static void main(String[] args) throws Exception {
    String zipname = "data.txt.gz";
    String source = "data.txt.gz";
    GZIPInputStream zipin;

    FileInputStream in = new FileInputStream(zipname);
    zipin = new GZIPInputStream(in);

    byte[] buffer = new byte[sChunk];
    // decompress the file
    FileOutputStream out = new FileOutputStream(source);
    int length;/* w w w .  j  a v a2 s  . co m*/
    while ((length = zipin.read(buffer, 0, sChunk)) != -1)
        out.write(buffer, 0, length);
    out.close();

    zipin.close();
}

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From source file:Main.java

static byte[] decompress(byte[] compressed) throws IOException {
    int nRead;//from ww  w  . ja  v  a2  s.c  o m
    byte[] data = new byte[2048];
    ByteArrayInputStream bis = new ByteArrayInputStream(compressed);
    GZIPInputStream gzip = new GZIPInputStream(bis);
    ByteArrayOutputStream buffer = new ByteArrayOutputStream();

    while ((nRead = gzip.read(data, 0, data.length)) != -1) {
        buffer.write(data, 0, nRead);
    }

    bis.close();
    gzip.close();
    return buffer.toByteArray();
}

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From source file:Main.java

static byte[] decompress(byte[] compressed) throws IOException {
    int nRead;//from w ww  .  ja  v a  2 s . c o m
    byte[] data = new byte[2048];
    ByteArrayInputStream bis = new ByteArrayInputStream(compressed);
    GZIPInputStream gzip = new GZIPInputStream(bis);
    ByteArrayOutputStream buffer = new ByteArrayOutputStream();

    while ((nRead = gzip.read(data, 0, data.length)) != -1) {
        buffer.write(data, 0, nRead);
    }

    gzip.close();
    bis.close();
    return buffer.toByteArray();
}

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From source file:CompressTransfer.java

/**
 * ?/*from   ww w . ja v a 2  s  .c  om*/
 *
 * @param is
 * @param os
 * @throws Exception
 */
public static void decompress(InputStream is, OutputStream os) throws Exception {

    GZIPInputStream gis = new GZIPInputStream(is);
    int count;
    byte data[] = new byte[BUFFER];
    while ((count = gis.read(data, 0, BUFFER)) != -1) {
        os.write(data, 0, count);
    }

    gis.close();
}

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From source file:Main.java

public static byte[] unGzip(byte[] data) {
    byte[] b = null;
    try {// ww w . j  a  va 2s.  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:ZipDemo.java

public static final String uncompress(final byte[] compressed) throws IOException {
    String uncompressed = "";

    try {//  w w w .  j a v a 2 s  .  co m
        ByteArrayInputStream bais = new ByteArrayInputStream(compressed);
        GZIPInputStream zis = new GZIPInputStream(bais);

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        int numBytesRead = 0;
        byte[] tempBytes = new byte[DEFAULT_BUFFER_SIZE];
        while ((numBytesRead = zis.read(tempBytes, 0, tempBytes.length)) != -1) {
            baos.write(tempBytes, 0, numBytesRead);
        }

        uncompressed = new String(baos.toByteArray());
    } catch (ZipException e) {
        e.printStackTrace(System.err);
    }

    return uncompressed;
}

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From source file:Main.java

/**
 * Uncompress gzipped files//  w ww.  j  av a  2s. co m
 * @param gzippedFile The file to uncompress
 * @param destinationFile The resulting file
 * @throws java.io.IOException thrown if there is a problem finding or writing the files
 */
public static void gunzip(File gzippedFile, File destinationFile) throws IOException {
    int buffer = 2048;

    FileInputStream in = new FileInputStream(gzippedFile);
    GZIPInputStream zipin = new GZIPInputStream(in);

    byte[] data = new byte[buffer];

    // decompress the file
    FileOutputStream out = new FileOutputStream(destinationFile);
    try {
        int length;
        while ((length = zipin.read(data, 0, buffer)) != -1)
            out.write(data, 0, length);
    } finally {
        out.close();

        zipin.close();
        in.close();
    }

}

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From source file:pl.otros.logview.io.Utils.java

public static boolean checkIfIsGzipped(byte[] buffer, int lenght) throws IOException {
    boolean gziped = false;
    try {/*w w w.  j a v a2s .c o m*/
        ByteArrayInputStream bin = new ByteArrayInputStream(buffer, 0, lenght);
        GZIPInputStream gzipInputStream = new GZIPInputStream(bin);
        gzipInputStream.read(new byte[buffer.length], 0, bin.available());
        gziped = true;
    } catch (IOException e) {
        gziped = false;
    }
    return gziped;
}

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From source file:pl.otros.logview.api.io.Utils.java

public static boolean checkIfIsGzipped(byte[] buffer, int lenght) throws IOException {
    boolean gziped;
    try {//www .  ja va  2 s .c o  m
        ByteArrayInputStream bin = new ByteArrayInputStream(buffer, 0, lenght);
        GZIPInputStream gzipInputStream = new GZIPInputStream(bin);
        gzipInputStream.read(new byte[buffer.length], 0, bin.available());
        gziped = true;
    } catch (IOException e) {
        gziped = false;
    }
    return gziped;
}

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