Example usage for java.util.zip DeflaterOutputStream DeflaterOutputStream

Introduction

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

Prototype

public DeflaterOutputStream(OutputStream out) 

Source Link

Document

Creates a new output stream with a default compressor and buffer size.

Usage

From source file:com.apporiented.hermesftp.cmd.AbstractFtpCmdRetr.java

private OutputStream createOutputStream(OutputStream dataOut, int mode, String charset)
        throws UnsupportedEncodingException {
    OutputStream result = null;// w w w .j  av  a  2  s  .c o  m
    if (mode == MODE_BLOCK) {
        result = new BlockModeOutputStream(dataOut);
    } else if (mode == MODE_STREAM) {
        result = dataOut;
    } else if (mode == MODE_ZIP) {
        result = new DeflaterOutputStream(dataOut);
    } else {
        log.error("Unsupported file mode: " + mode);
    }
    if (charset != null) {
        result = new TextOutputStream(result, charset);
    }
    return result;
}

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From source file:de.tntinteractive.portalsammler.engine.SecureStore.java

private byte[] compress(final byte[] content) throws IOException {
    final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
    final DeflaterOutputStream deflate = new DeflaterOutputStream(buffer);
    deflate.write(content);//from w w  w.ja  v a  2 s .  c o  m
    deflate.close();
    return buffer.toByteArray();
}

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From source file:com.cloud.agent.api.SecurityGroupRulesCmd.java

public String compressStringifiedRules() {
    StringBuilder ruleBuilder = new StringBuilder();
    for (SecurityGroupRulesCmd.IpPortAndProto ipPandP : getIngressRuleSet()) {
        ruleBuilder.append("I:").append(ipPandP.getProto()).append(":").append(ipPandP.getStartPort())
                .append(":").append(ipPandP.getEndPort()).append(":");
        for (String cidr : ipPandP.getAllowedCidrs()) {
            ruleBuilder.append(cidr).append(",");
        }//from   w  ww . j a  v  a2 s  .  c  om
        ruleBuilder.append("NEXT");
        ruleBuilder.append(" ");
    }
    for (SecurityGroupRulesCmd.IpPortAndProto ipPandP : getEgressRuleSet()) {
        ruleBuilder.append("E:").append(ipPandP.getProto()).append(":").append(ipPandP.getStartPort())
                .append(":").append(ipPandP.getEndPort()).append(":");
        for (String cidr : ipPandP.getAllowedCidrs()) {
            ruleBuilder.append(cidr).append(",");
        }
        ruleBuilder.append("NEXT");
        ruleBuilder.append(" ");
    }
    String stringified = ruleBuilder.toString();
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    try {
        //Note : not using GZipOutputStream since that is for files
        //GZipOutputStream gives a different header, although the compression is the same
        DeflaterOutputStream dzip = new DeflaterOutputStream(out);
        dzip.write(stringified.getBytes());
        dzip.close();
    } catch (IOException e) {
        s_logger.warn("Exception while compressing security group rules");
        return null;
    }
    return Base64.encodeBase64String(out.toByteArray());
}

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From source file:com.apporiented.hermesftp.cmd.AbstractFtpCmdRetr.java

private RecordWriteSupport createRecOutputStream(OutputStream dataOut, int mode, String charset)
        throws UnsupportedEncodingException {
    RecordWriteSupport result = null;/* w w  w.j a  va  2  s.c om*/
    if (mode == MODE_BLOCK) {
        result = new BlockModeOutputStream(dataOut);
    } else if (mode == MODE_STREAM) {
        result = new RecordOutputStream(dataOut);
    } else if (mode == MODE_ZIP) {
        result = new RecordOutputStream(new DeflaterOutputStream(dataOut));
    } else {
        log.error("Unsupported record mode: " + mode);
    }
    if (charset != null) {
        result = new TextOutputStream((OutputStream) result, charset);
    }
    return result;
}

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From source file:org.fejoa.library.database.CSRepositoryBuilder.java

static private IChunkAccessor getEncryptionChunkAccessor(final FejoaContext context,
        final ChunkStore.Transaction transaction, final SymmetricKeyData keyData, final ChunkContainerRef ref) {
    return new IChunkAccessor() {
        final ICryptoInterface cryptoInterface = context.getCrypto();

        private byte[] getIv(byte[] hashValue) {
            final int ivSizeBytes = keyData.settings.ivSize / 8;
            byte[] iv = Arrays.copyOfRange(hashValue, 0, ivSizeBytes);
            // xor with the base IV
            for (int i = 0; i < ivSizeBytes; i++)
                iv[i] = (byte) (keyData.iv[i] ^ iv[i]);
            return iv;
        }/*  w  w  w.ja  v a2s .  com*/

        @Override
        public DataInputStream getChunk(ChunkPointer hash) throws IOException, CryptoException {
            byte[] iv = getIv(hash.getIV());
            byte[] chunkData = transaction.getChunk(hash.getBoxHash());
            if (chunkData == null)
                throw new IOException("Chunk not found: " + hash.getBoxHash());
            InputStream inputStream = new ByteArrayInputStream(chunkData);
            inputStream = cryptoInterface.decryptSymmetric(inputStream, keyData.key, iv, keyData.settings);
            if (ref.getBoxHeader().getCompressionType() == BoxHeader.CompressionType.ZLIB_COMPRESSION)
                inputStream = new InflaterInputStream(inputStream);
            return new DataInputStream(inputStream);
        }

        @Override
        public PutResult<HashValue> putChunk(byte[] data, HashValue ivHash)
                throws IOException, CryptoException {
            ByteArrayOutputStream byteOutputStream = new ByteArrayOutputStream();
            OutputStream outputStream = byteOutputStream;
            outputStream = cryptoInterface.encryptSymmetric(outputStream, keyData.key, getIv(ivHash.getBytes()),
                    keyData.settings);
            if (ref.getBoxHeader().getCompressionType() == BoxHeader.CompressionType.ZLIB_COMPRESSION)
                outputStream = new DeflaterOutputStream(outputStream);
            outputStream.write(data);
            outputStream.close();
            return transaction.put(byteOutputStream.toByteArray());
        }

        @Override
        public void releaseChunk(HashValue data) {

        }
    };
}

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From source file:org.ozsoft.xantippe.Document.java

/**
 * Sets the document's content based on a file.
 * /*from w w  w . jav  a 2  s  .c  o m*/
 * In case of an XML document and depending on the validation mode of the
 * collection, the document may be validated against its schema before it
 * is stored.
 * 
 * In case of a schema it is parsed and registered by its target namespace.
 * 
 * Depending on the compression mode of the collection, the document may be
 * stored in compressed form.
 *  
 * @param   file  the file with the document's content
 * 
 * @throws  IllegalArgumentException  if the file is null 
 * 
 * @throws  XmldbException
 *              if the file does not exist, could not be read or parsed, or
 *              the document could not be compressed or stored
 */
public void setContent(File file) throws XmldbException {
    if (file == null) {
        throw new IllegalArgumentException("Null file");
    }

    if (!file.isFile()) {
        String msg = "File not found: " + file;
        LOG.error(msg);
        throw new XmldbException(msg);
    }

    if (!file.canRead()) {
        String msg = "No read permission on file: " + file;
        LOG.error(msg);
        throw new XmldbException(msg);
    }

    Collection parentCol = getParent();

    if (mediaType == MediaType.XML) {
        String uri = getUri();
        ValidationMode vm = parentCol.getValidationMode(true);
        switch (vm) {
        case ON:
            // Validate document against mandatory schema. 
            database.getValidator().validate(file, uri, true);
            break;
        case AUTO:
            // Validate document if possible (namespace and schema).
            database.getValidator().validate(file, uri, false);
            break;
        case OFF:
            // No validation.
            break;
        default:
            // Should never happen.
            LOG.error("Invalid validation mode: " + vm);
        }
    } else if (mediaType == MediaType.SCHEMA) {
        try {
            database.getValidator().addSchema(file, id);
        } catch (Exception e) {
            String msg = String.format("Invalid schema file: '%s': %s", file, e.getMessage());
            LOG.error(msg);
            throw new XmldbException(msg);
        }
    }

    // Use compression mode as configured for collection.
    compressionMode = parentCol.getCompressionMode(true);

    File storedFile = null;

    try {
        if (compressionMode != CompressionMode.NONE) {
            // Compress document to a temporary file.
            storedFile = File.createTempFile("xantippe-", null);
            OutputStream os;
            if (compressionMode == CompressionMode.DEFLATE) {
                os = new DeflaterOutputStream(new FileOutputStream(storedFile));
            } else {
                // Should never happen.
                String msg = "Invalid compression mode: " + compressionMode;
                LOG.error(msg);
                throw new XmldbException(msg);
            }
            InputStream is = new FileInputStream(file);
            byte[] buffer = new byte[BUFFER_SIZE];
            int read;
            while ((read = is.read(buffer)) > 0) {
                os.write(buffer, 0, read);
            }
            os.close();
            is.close();
        } else {
            // No compression; store document as-is.
            storedFile = file;
        }

        database.getLockManager().lockWrite(this);

        database.getFileStore().store(id, storedFile);

        if (mediaType == MediaType.XML) {
            parentCol.indexDocument(this, file);
        }

        length = (int) file.length();

        updateModified();

    } catch (IOException e) {
        String msg = String.format("Error while compressing document '%s': %s", this, e.getMessage());
        LOG.error(msg, e);
        throw new XmldbException(msg, e);

    } catch (FileStoreException e) {
        String msg = String.format("Error while storing document '%s': %s", this, e.getMessage());
        LOG.error(msg, e);
        throw new XmldbException(msg, e);

    } finally {
        database.getLockManager().unlockWrite(this);

        if (compressionMode != CompressionMode.NONE && storedFile != null) {
            // Always clean up temporary (compressed) file.
            storedFile.delete();
        }
    }
}

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From source file:org.diorite.nbt.NbtOutputStream.java

/**
 * Create new deflated nbt output stream for given file, and write nbt tag to it.
 *
 * @param tag    nbt tag to write.//from   w  w w . j av a  2  s . c  o m
 * @param file   data file to be used.
 * @param append if new data should be appended to existing one.
 *
 * @return created NbtOutputStream.
 *
 * @throws IOException if any write operation failed.
 */
public static NbtOutputStream writeDeflated(final NbtTag tag, final File file, final boolean append)
        throws IOException {
    createFile(file);
    final NbtOutputStream out = new NbtOutputStream(
            new DeflaterOutputStream(new FileOutputStream(file, append)));
    out.write(tag);
    return out;
}

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From source file:de.tntinteractive.portalsammler.engine.SecureStore.java

private MapWriter createMapWriterAndWriteSalt(final OutputStream out, final int salt) throws IOException {
    final OutputStream cipher = CryptoHelper.createAesEncryptStream(out, this.key, this.srand);
    writeInt(cipher, salt);//from   w w  w .  j  av a2s.  c o  m

    final DeflaterOutputStream deflate = new DeflaterOutputStream(cipher);
    final MapWriter w = MapWriter.createFor(deflate);
    return w;
}

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From source file:org.apache.pdfbox.filter.FlateFilter.java

/**
 * {@inheritDoc}//from w w  w. ja  v a2s  . c om
 */
public void encode(InputStream rawData, OutputStream result, COSDictionary options, int filterIndex)
        throws IOException {
    DeflaterOutputStream out = new DeflaterOutputStream(result);
    int amountRead = 0;
    int mayRead = rawData.available();
    if (mayRead > 0) {
        byte[] buffer = new byte[Math.min(mayRead, BUFFER_SIZE)];
        while ((amountRead = rawData.read(buffer, 0, Math.min(mayRead, BUFFER_SIZE))) != -1) {
            out.write(buffer, 0, amountRead);
        }
    }
    out.close();
    result.flush();
}

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From source file:org.candlepin.pinsetter.tasks.HypervisorUpdateJob.java

public static byte[] compress(String text) {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    try {// w  w w.j a va  2s  .c  o  m
        OutputStream out = new DeflaterOutputStream(baos);
        out.write(text.getBytes("UTF-8"));
        out.close();
    } catch (IOException e) {
        throw new AssertionError(e);
    }
    return baos.toByteArray();
}

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