Example usage for java.util.zip Inflater Inflater

Introduction

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

Prototype

public Inflater(boolean nowrap) 

Source Link

Document

Creates a new decompressor.

Usage

From source file:net.awl.edoc.pdfa.compression.FlateDecode.java

public static void main(String[] args) throws Exception {
    Inflater inf = new Inflater(false);

    File f = new File("resources/content_2_0.ufd");
    FileInputStream fis = new FileInputStream(f);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    IOUtils.copy(fis, baos);//ww w  . j  av  a  2 s . co  m
    IOUtils.closeQuietly(fis);
    IOUtils.closeQuietly(baos);
    byte[] buf = baos.toByteArray();
    inf.setInput(buf);
    byte[] res = new byte[buf.length];
    int size = inf.inflate(res);
    String s = new String(res, 0, size, "utf8");
    System.err.println(s);

}

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From source file:Main.java

/**
 * Inflate the given byte array by {@link #INFLATED_ARRAY_LENGTH}.
 *
 * @param bytes the bytes//from  ww w.  java 2s .  c o  m
 * @return the array as a string with {@code UTF-8} encoding
 */
public static String inflate(final byte[] bytes) {
    final Inflater inflater = new Inflater(true);
    final byte[] xmlMessageBytes = new byte[INFLATED_ARRAY_LENGTH];

    final byte[] extendedBytes = new byte[bytes.length + 1];
    System.arraycopy(bytes, 0, extendedBytes, 0, bytes.length);
    extendedBytes[bytes.length] = 0;

    inflater.setInput(extendedBytes);

    try {
        final int resultLength = inflater.inflate(xmlMessageBytes);
        inflater.end();

        if (!inflater.finished()) {
            throw new RuntimeException("buffer not large enough.");
        }

        inflater.end();
        return new String(xmlMessageBytes, 0, resultLength, StandardCharsets.UTF_8);
    } catch (final DataFormatException e) {
        return null;
    }
}

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From source file:Main.java

public static InputStream getInputEncoding(URLConnection connection) throws IOException {
    InputStream in;/*from  w ww . ja  va  2s  .  c om*/
    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;
}

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From source file:Main.java

static String downloadHtml(String urlString) {
    StringBuffer buffer = new StringBuffer();

    try {/*from ww  w  . ja va2s .  c o  m*/
        URL url = new URL(urlString);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        HttpURLConnection.setFollowRedirects(true);
        conn.setRequestProperty("Accept-Encoding", "gzip, deflate");
        String encoding = conn.getContentEncoding();
        InputStream inStr = null;

        if (encoding != null && encoding.equalsIgnoreCase("gzip")) {
            inStr = new GZIPInputStream(conn.getInputStream());
        } else if (encoding != null && encoding.equalsIgnoreCase("deflate")) {
            inStr = new InflaterInputStream(conn.getInputStream(), new Inflater(true));
        } else {
            inStr = conn.getInputStream();
        }
        int ptr = 0;
        InputStreamReader inStrReader = new InputStreamReader(inStr, Charset.forName("GB2312"));

        while ((ptr = inStrReader.read()) != -1) {
            buffer.append((char) ptr);
        }
        inStrReader.close();
        conn.disconnect();
        inStr.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return buffer.toString();
}

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From source file:org.xdi.zip.CompressionHelper.java

public static byte[] inflate(byte[] data, boolean nowrap) throws IOException, DataFormatException {
    Inflater inflater = new Inflater(nowrap);
    inflater.setInput(data);/*  w  w w  .  ja v  a 2 s. c  o  m*/

    ByteArrayOutputStream os = new ByteArrayOutputStream(data.length);
    try {
        byte[] buffer = new byte[1024];
        while (!inflater.finished()) {
            int count = inflater.inflate(buffer);
            os.write(buffer, 0, count);
        }
    } finally {
        IOUtils.closeQuietly(os);
    }

    return os.toByteArray();
}

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From source file:Main.java

public static InputStream inflate(byte[] deflatedToken, boolean nowrap) throws DataFormatException {
    Inflater inflater = new Inflater(nowrap);
    inflater.setInput(deflatedToken);/*  ww w. j  a  v a  2  s  . c  o  m*/

    byte[] input = new byte[deflatedToken.length * 2];
    int inflatedLen = 0;
    int inputLen = 0;
    byte[] inflatedToken = input;
    while (!inflater.finished()) {
        inputLen = inflater.inflate(input);
        if (!inflater.finished()) {

            if (inputLen == 0) {
                if (inflater.needsInput()) {
                    throw new DataFormatException("Inflater can not inflate all the token bytes");
                } else {
                    break;
                }
            }

            inflatedToken = new byte[input.length + inflatedLen];
            System.arraycopy(input, 0, inflatedToken, inflatedLen, inputLen);
            inflatedLen += inputLen;
        }
    }
    InputStream is = new ByteArrayInputStream(input, 0, inputLen);
    if (inflatedToken != input) {
        is = new SequenceInputStream(new ByteArrayInputStream(inflatedToken, 0, inflatedLen), is);
    }
    return is;
}

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From source file:Main.java

public static byte[] decompress(byte[] input, boolean GZIPFormat) throws IOException, DataFormatException {
    Inflater decompressor = new Inflater(GZIPFormat);
    decompressor.setInput(input);/*from   ww w. ja  v a 2 s  . c  om*/
    ByteArrayOutputStream bao = new ByteArrayOutputStream();
    byte[] readBuffer = new byte[1024];
    int readCount = 0;

    while (!decompressor.finished()) {
        readCount = decompressor.inflate(readBuffer);
        if (readCount > 0) {
            bao.write(readBuffer, 0, readCount);
        }
    }
    decompressor.end();
    return bao.toByteArray();
}

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From source file:org.openmrs.module.shr.contenthandler.DataUtil.java

public static byte[] uncompressDeflate(byte[] content) throws IOException {
    InflaterInputStream deflateIn = new InflaterInputStream(new ByteArrayInputStream(content),
            new Inflater(true));
    return copyToByteArray(deflateIn);
}

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From source file:org.jasig.cas.util.CompressionUtils.java

/**
 * Inflate the given byte array by {@link #INFLATED_ARRAY_LENGTH}.
 *
 * @param bytes the bytes/*from ww  w .  j  a  v  a 2  s.  c o  m*/
 * @return the array as a string with <code>UTF-8</code> encoding
 */
public static String inflate(final byte[] bytes) {
    final Inflater inflater = new Inflater(true);
    final byte[] xmlMessageBytes = new byte[INFLATED_ARRAY_LENGTH];
    final byte[] extendedBytes = new byte[bytes.length + 1];
    System.arraycopy(bytes, 0, extendedBytes, 0, bytes.length);
    extendedBytes[bytes.length] = 0;
    inflater.setInput(extendedBytes);
    try {
        final int resultLength = inflater.inflate(xmlMessageBytes);
        inflater.end();
        if (!inflater.finished()) {
            throw new RuntimeException("Buffer not large enough.");
        }
        inflater.end();
        return new String(xmlMessageBytes, 0, resultLength, UTF8_ENCODING);
    } catch (final DataFormatException e) {
        LOGGER.error("Data format is not supported", e);
        return null;
    } catch (final UnsupportedEncodingException e) {
        throw new RuntimeException("Cannot find encoding:" + UTF8_ENCODING, e);
    }
}

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From source file:org.samlsnort.util.EncodingTool.java

public static String inflate(byte[] deflated) throws DataFormatException {
    Inflater inflater = new Inflater(true);
    inflater.setInput(deflated);/*ww w . j  a va  2 s .c o  m*/
    byte[] inflatedBytes = new byte[4096];
    int len = inflater.inflate(inflatedBytes);
    inflater.setInput(new byte[0]);
    len += inflater.inflate(inflatedBytes, len, 1);
    inflater.end();
    return new String(inflatedBytes, 0, len, CHARSET);
}

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