Example usage for java.util.zip InflaterInputStream InflaterInputStream

Introduction

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

Prototype

public InflaterInputStream(InputStream in) 

Source Link

Document

Creates a new input stream with a default decompressor and buffer size.

Usage

From source file:de.burlov.amazon.s3.dirsync.DirSync.java

private void downloadFile(File target, String s3key) throws IOException, S3ServiceException {
    InputStream in = downloadData(s3key);
    if (in == null) {
        throw new IOException("No data found");
    }/*from  w w w  .ja va 2 s .c  o m*/
    in = new InflaterInputStream(new CryptInputStream(in, cipher, getDataEncryptionKey()));
    File temp = File.createTempFile("dirsync", null);
    FileOutputStream fout = new FileOutputStream(temp);
    try {
        IOUtils.copy(in, fout);
        if (target.exists()) {
            target.delete();
        }
        IOUtils.closeQuietly(fout);
        IOUtils.closeQuietly(in);
        FileUtils.moveFile(temp, target);
    } catch (IOException e) {
        fetchStream(in);
        throw e;
    } finally {
        IOUtils.closeQuietly(fout);
        IOUtils.closeQuietly(in);
    }
}

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From source file:net.oddsoftware.android.feedscribe.data.FeedManager.java

void downloadFeedHttp(Feed feed, FeedStatus feedStatus, ArrayList<FeedItem> feedItems,
        ArrayList<Enclosure> enclosures) {
    try {/*from   w  w w  . ja  v a2 s.c o  m*/
        // use apache http client lib to set parameters from feedStatus
        DefaultHttpClient client = new DefaultHttpClient();

        // set up proxy handler
        ProxySelectorRoutePlanner routePlanner = new ProxySelectorRoutePlanner(
                client.getConnectionManager().getSchemeRegistry(), ProxySelector.getDefault());
        client.setRoutePlanner(routePlanner);

        HttpGet request = new HttpGet(feed.mURL);

        HttpContext httpContext = new BasicHttpContext();

        request.setHeader("User-Agent", USER_AGENT);

        // send etag if we have it
        if (feedStatus.mETag.length() > 0) {
            request.setHeader("If-None-Match", feedStatus.mETag);
        }

        // send If-Modified-Since if we have it
        if (feedStatus.mLastModified.getTime() > 0) {
            SimpleDateFormat dateFormat = new SimpleDateFormat("EEE', 'dd' 'MMM' 'yyyy' 'HH:mm:ss' GMT'",
                    Locale.US);
            dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
            String formattedTime = dateFormat.format(feedStatus.mLastModified);
            // If-Modified-Since: Sat, 29 Oct 1994 19:43:31 GMT
            request.setHeader("If-Modified-Since", formattedTime);
        }

        request.setHeader("Accept-Encoding", "gzip,deflate");
        HttpResponse response = client.execute(request, httpContext);

        if (mLog.d())
            mLog.d("http request: " + feed.mURL);
        if (mLog.d())
            mLog.d("http response code: " + response.getStatusLine());

        InputStream inputStream = null;

        StatusLine status = response.getStatusLine();
        HttpEntity entity = response.getEntity();

        if (entity != null) {
            inputStream = entity.getContent();
        }

        try {
            if (entity != null && status.getStatusCode() == 200) {
                Header encodingHeader = entity.getContentEncoding();

                if (encodingHeader != null) {
                    if (encodingHeader.getValue().equalsIgnoreCase("gzip")) {
                        inputStream = new GZIPInputStream(inputStream);
                    } else if (encodingHeader.getValue().equalsIgnoreCase("deflate")) {
                        inputStream = new InflaterInputStream(inputStream);
                    }
                }

                // remove caching attributes to be replaced with new ones
                feedStatus.mETag = "";
                feedStatus.mLastModified.setTime(0);
                feedStatus.mTTL = 0;

                boolean success = parseFeed(inputStream, feed, feedStatus, feedItems, enclosures);

                if (success) {
                    // if the parse was ok, update these attributes
                    // ETag: "6050003-78e5-4981d775e87c0"
                    Header etagHeader = response.getFirstHeader("ETag");
                    if (etagHeader != null) {
                        if (etagHeader.getValue().length() < MAX_ETAG_LENGTH) {
                            feedStatus.mETag = etagHeader.getValue();
                        } else {
                            mLog.e("etag length was too big: " + etagHeader.getValue().length());
                        }
                    }

                    // Last-Modified: Fri, 24 Dec 2010 00:57:11 GMT
                    Header lastModifiedHeader = response.getFirstHeader("Last-Modified");
                    if (lastModifiedHeader != null) {
                        try {
                            feedStatus.mLastModified = parseRFC822Date(lastModifiedHeader.getValue());
                        } catch (ParseException exc) {
                            mLog.e("unable to parse date", exc);
                        }
                    }

                    HttpUriRequest currentReq = (HttpUriRequest) httpContext
                            .getAttribute(ExecutionContext.HTTP_REQUEST);
                    HttpHost currentHost = (HttpHost) httpContext
                            .getAttribute(ExecutionContext.HTTP_TARGET_HOST);
                    String currentUrl = currentHost.toURI() + currentReq.getURI();

                    mLog.w("loaded redirect from " + request.getURI().toString() + " to " + currentUrl);

                    feedStatus.mLastURL = currentUrl;
                }
            } else {
                if (status.getStatusCode() == 304) {
                    mLog.d("received 304 not modified");
                }
            }
        } finally {
            if (inputStream != null) {
                inputStream.close();
            }
        }
    } catch (IOException exc) {
        mLog.e("error downloading feed " + feed.mURL, exc);
    }
}

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From source file:de.burlov.amazon.s3.dirsync.DirSync.java

private Object downloadObject(String s3key, byte[] encKey) throws IOException {
    InputStream in = downloadData(s3key);
    if (in == null) {
        return null;
    }//  w w  w. j av  a2 s  .  c o m
    CountingInputStream cin = new CountingInputStream(
            new InflaterInputStream(new CryptInputStream(in, cipher, encKey)));
    ObjectInputStream oin = new ObjectInputStream(cin);
    try {
        Object o = oin.readObject();
        transferredData += cin.getByteCount();
        return o;
    } catch (ClassNotFoundException e) {
        /*
         * sollte eigentlich nie vorkommen
         */
        throw new IOException(e.getLocalizedMessage());
    } finally {
        IOUtils.closeQuietly(in);
    }
}

---

From source file:com.funambol.transport.http.server.Sync4jServlet.java

/**
 * Returns the content of HTTP request.//from w ww. j a  v  a2 s  . c  o  m
 * Uncompresses the request if the Content-Encoding is gzip or deflate.
 * Updates the Content-Length with the length of the uncompressed request.
 *
 * @param httpRequest the HttpServletRequest
 * @param contentEncoding the content encoding
 * @param requestTime the time in which the request is arrived to servlet
 * @param sessionId the session identifier
 *
 * @return requestData the uncompressed request content
 * @throws java.io.IOException if an error occurs
 */
private byte[] getRequestContent(HttpServletRequest httpRequest, String contentEncoding, long requestTime,
        String sessionId) throws IOException {

    byte[] requestData = null;
    InputStream in = null;

    try {

        in = httpRequest.getInputStream();

        int contentLength = httpRequest.getContentLength();
        if (contentLength <= 0) {
            contentLength = SIZE_INPUT_BUFFER;
        }

        if (logMessages) {
            //
            // Read the compressed request data to log it
            //
            requestData = IOTools.readContent(in, contentLength);
            logRequest(httpRequest, requestData, requestTime, sessionId);

            //
            // Create a new InputStream to pass at the decompressor
            //
            in = new ByteArrayInputStream(requestData);
        }

        if (contentEncoding != null) {
            if (contentEncoding.equals(COMPRESSION_TYPE_GZIP)) {

                if (log.isTraceEnabled()) {
                    log.trace("Reading the request using: " + COMPRESSION_TYPE_GZIP);
                }
                in = new GZIPInputStream(in);

            } else if (contentEncoding.equals(COMPRESSION_TYPE_DEFLATE)) {

                if (log.isTraceEnabled()) {
                    log.trace("Reading the request using: " + COMPRESSION_TYPE_DEFLATE);
                }
                in = new InflaterInputStream(in);
            }

            String uncompressedContentLength = httpRequest.getHeader("Uncompressed-Content-Length");

            if (uncompressedContentLength != null) {
                contentLength = Integer.parseInt(uncompressedContentLength);
            } else {
                contentLength = SIZE_INPUT_BUFFER;
            }

        }

        if (!logMessages || contentEncoding != null) {
            requestData = IOTools.readContent(in, contentLength);
        }

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

    return requestData;
}

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From source file:github.daneren2005.dsub.util.FileUtil.java

@TargetApi(Build.VERSION_CODES.GINGERBREAD)
public static <T extends Serializable> T deserializeCompressed(Context context, String fileName,
        Class<T> tClass) {/*from ww  w  .ja  v a  2 s.  c  om*/
    Input in = null;
    try {
        RandomAccessFile file = new RandomAccessFile(context.getCacheDir() + "/" + fileName, "r");

        in = new Input(new InflaterInputStream(new FileInputStream(file.getFD())));
        synchronized (kryo) {
            T result = kryo.readObject(in, tClass);
            return result;
        }
    } catch (FileNotFoundException e) {
        // Different error message
        Log.w(TAG, "No serialization compressed for object from " + fileName);
        return null;
    } catch (Throwable x) {
        Log.w(TAG, "Failed to deserialize compressed object from " + fileName);
        return null;
    } finally {
        Util.close(in);
    }
}

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From source file:org.torproject.collector.relaydescs.RelayDescriptorDownloader.java

/**
 * Attempts to download one or more descriptors identified by a resource
 * string from a directory authority and passes the returned
 * descriptor(s) to the <code>RelayDescriptorParser</code> upon success.
 * Returns the number of descriptors contained in the reply. Throws an
 * <code>IOException</code> if something goes wrong while downloading.
 *//*from w  w w .ja  v  a  2 s .  c  o m*/
private int downloadResourceFromAuthority(String authority, String resource) throws IOException {
    byte[] allData = null;
    this.requestsByAuthority.put(authority, this.requestsByAuthority.get(authority) + 1);
    /* TODO Disable compressed downloads for extra-info descriptors,
     * because zlib decompression doesn't work correctly. Figure out why
     * this is and fix it. */
    String fullUrl = "http://" + authority + resource
            + (this.downloadCompressed && !resource.startsWith("/tor/extra/") ? ".z" : "");
    URL url = new URL(fullUrl);
    HttpURLConnection huc = (HttpURLConnection) url.openConnection();
    huc.setRequestMethod("GET");
    huc.connect();
    int response = huc.getResponseCode();
    if (response == 200) {
        BufferedInputStream in = this.downloadCompressed && !resource.startsWith("/tor/extra/")
                ? new BufferedInputStream(new InflaterInputStream(huc.getInputStream()))
                : new BufferedInputStream(huc.getInputStream());
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        int len;
        byte[] data = new byte[1024];
        while ((len = in.read(data, 0, 1024)) >= 0) {
            baos.write(data, 0, len);
        }
        in.close();
        allData = baos.toByteArray();
    }
    logger.debug("Downloaded " + fullUrl + " -> " + response + " (" + (allData == null ? 0 : allData.length)
            + " bytes)");
    int receivedDescriptors = 0;
    if (allData != null) {
        if (resource.startsWith("/tor/status-vote/current/")) {
            this.rdp.parse(allData);
            receivedDescriptors = 1;
        } else if (resource.startsWith("/tor/server/") || resource.startsWith("/tor/extra/")) {
            if (resource.equals("/tor/server/all") || resource.equals("/tor/extra/all")) {
                this.lastDownloadedAllDescriptors.put(authority, this.currentTimestamp);
            }
            String ascii = null;
            try {
                ascii = new String(allData, "US-ASCII");
            } catch (UnsupportedEncodingException e) {
                /* No way that US-ASCII is not supported. */
            }
            int start = -1;
            int sig = -1;
            int end = -1;
            String startToken = resource.startsWith("/tor/server/") ? "router " : "extra-info ";
            String sigToken = "\nrouter-signature\n";
            String endToken = "\n-----END SIGNATURE-----\n";
            while (end < ascii.length()) {
                start = ascii.indexOf(startToken, end);
                if (start < 0) {
                    break;
                }
                sig = ascii.indexOf(sigToken, start);
                if (sig < 0) {
                    break;
                }
                sig += sigToken.length();
                end = ascii.indexOf(endToken, sig);
                if (end < 0) {
                    break;
                }
                end += endToken.length();
                byte[] descBytes = new byte[end - start];
                System.arraycopy(allData, start, descBytes, 0, end - start);
                this.rdp.parse(descBytes);
                receivedDescriptors++;
            }
        } else if (resource.startsWith("/tor/micro/")) {
            /* TODO We need to parse microdescriptors ourselves, rather than
             * RelayDescriptorParser, because only we know the valid-after
             * time(s) of microdesc consensus(es) containing this
             * microdescriptor.  However, this breaks functional abstraction
             * pretty badly. */
            SimpleDateFormat parseFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            parseFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
            String ascii = null;
            try {
                ascii = new String(allData, "US-ASCII");
            } catch (UnsupportedEncodingException e) {
                /* No way that US-ASCII is not supported. */
            }
            int start = -1;
            int end = -1;
            String startToken = "onion-key\n";
            while (end < ascii.length()) {
                start = ascii.indexOf(startToken, end);
                if (start < 0) {
                    break;
                }
                end = ascii.indexOf(startToken, start + 1);
                if (end < 0) {
                    end = ascii.length();
                    if (end <= start) {
                        break;
                    }
                }
                byte[] descBytes = new byte[end - start];
                System.arraycopy(allData, start, descBytes, 0, end - start);
                String digest256Base64 = Base64.encodeBase64String(DigestUtils.sha256(descBytes))
                        .replaceAll("=", "");
                if (!this.microdescriptorKeys.containsKey(digest256Base64)) {
                    continue;
                }
                String digest256Hex = DigestUtils.sha256Hex(descBytes);
                for (String microdescriptorKey : this.microdescriptorKeys.get(digest256Base64)) {
                    String validAfterTime = microdescriptorKey.split(",")[1];
                    try {
                        long validAfter = parseFormat.parse(validAfterTime).getTime();
                        this.rdp.storeMicrodescriptor(descBytes, digest256Hex, digest256Base64, validAfter);
                    } catch (ParseException e) {
                        logger.warn("Could not parse " + "valid-after time '" + validAfterTime + "' in "
                                + "microdescriptor key. Not storing microdescriptor.", e);
                    }
                }
                receivedDescriptors++;
            }
        }
    }
    return receivedDescriptors;
}

---

From source file:com.enonic.esl.xml.XMLTool.java

public static Document deflatedBytesToDocument(byte[] bytes) {
    ByteArrayInputStream in = new ByteArrayInputStream(bytes);
    InflaterInputStream iis = new InflaterInputStream(in);
    return domparse(iis);
}

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From source file:org.apache.xmlgraphics.image.codec.png.PNGImageDecoder.java

private void parse_zTXt_chunk(final PNGChunk chunk) {

    int textIndex = 0;
    final StringBuilder key = new StringBuilder();
    byte b;//  w  w w .j ava  2 s  .  co m
    while ((b = chunk.getByte(textIndex++)) != 0) {
        key.append((char) b);
    }
    /* int method = */chunk.getByte(textIndex++);

    final StringBuilder value = new StringBuilder();
    try {
        final int length = chunk.getLength() - textIndex;
        final byte[] data = chunk.getData();
        final InputStream cis = new ByteArrayInputStream(data, textIndex, length);
        final InputStream iis = new InflaterInputStream(cis);

        int c;
        while ((c = iis.read()) != -1) {
            value.append((char) c);
        }

        this.ztextKeys.add(key.toString());
        this.ztextStrings.add(value.toString());
    } catch (final Exception e) {
        log.error("Exception", e);
    }
}

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From source file:org.apache.xmlgraphics.image.codec.png.PNGRed.java

private void parse_zTXt_chunk(final PNGChunk chunk) {
    final StringBuilder key = new StringBuilder();
    final StringBuilder value = new StringBuilder();
    byte b;//w  ww.j a  v  a  2  s  .c o  m

    int textIndex = 0;
    while ((b = chunk.getByte(textIndex++)) != 0) {
        key.append((char) b);
    }
    /* int method = */chunk.getByte(textIndex++);

    try {
        final int length = chunk.getLength() - textIndex;
        final byte[] data = chunk.getData();
        final InputStream cis = new ByteArrayInputStream(data, textIndex, length);
        final InputStream iis = new InflaterInputStream(cis);

        int c;
        while ((c = iis.read()) != -1) {
            value.append((char) c);
        }

        this.ztextKeys.add(key.toString());
        this.ztextStrings.add(value.toString());
    } catch (final Exception e) {
        log.error("Exception", e);
    }
}

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From source file:nl.nn.adapterframework.jdbc.JdbcTransactionalStorage.java

private Object retrieveObject(ResultSet rs, int columnIndex, boolean compressed)
        throws ClassNotFoundException, JdbcException, IOException, SQLException {
    InputStream blobStream = null;
    try {//from w  ww . j a  va2 s .c  o  m
        Blob blob = rs.getBlob(columnIndex);
        if (blob == null) {
            return null;
        }
        if (compressed) {
            blobStream = new InflaterInputStream(JdbcUtil.getBlobInputStream(blob, columnIndex + ""));
        } else {
            blobStream = JdbcUtil.getBlobInputStream(blob, columnIndex + "");
        }
        ObjectInputStream ois = new ObjectInputStream(blobStream);
        Object result = ois.readObject();
        ois.close();
        return result;
    } finally {
        if (blobStream != null) {
            blobStream.close();
        }
    }
}

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