Example usage for java.io RandomAccessFile RandomAccessFile

List of usage examples for java.io RandomAccessFile RandomAccessFile

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Introduction

In this page you can find the example usage for java.io RandomAccessFile RandomAccessFile.

Prototype

public RandomAccessFile(File file, String mode) throws FileNotFoundException

Source Link

Document

Creates a random access file stream to read from, and optionally to write to, the file specified by the File argument.

Usage

From source file:com.polyvi.xface.extension.advancedfiletransfer.XFileDownloader.java

@Override
public void transfer(XCallbackContext callbackCtx) {
    initDownloadInfo();/* www .j  a v  a 2s.c o m*/
    if (mState == DOWNLOADING) {
        return;
    }
    mCallbackCtx = callbackCtx;
    if (null == mDownloadInfo) {
        onError(CONNECTION_ERR);
    } else {
        setState(DOWNLOADING);
        new Thread(new Runnable() {
            @Override
            public void run() {
                HttpURLConnection connection = null;
                RandomAccessFile randomAccessFile = null;
                InputStream is = null;
                int retry = RETRY;
                //TODO:?????
                do {
                    int completeSize = mDownloadInfo.getCompleteSize();
                    try {
                        URL url = new URL(mUrl);
                        connection = (HttpURLConnection) url.openConnection();
                        connection.setConnectTimeout(TIME_OUT_MILLISECOND);
                        connection.setRequestMethod("GET");
                        // ?Rangebytes x-;
                        connection.setRequestProperty("Range", "bytes=" + completeSize + "-");
                        //cookie
                        setCookieProperty(connection, mUrl);
                        // ?.temp
                        randomAccessFile = new RandomAccessFile(mLocalFilePath + TEMP_FILE_SUFFIX, "rwd");
                        randomAccessFile.seek(completeSize);
                        // ???
                        is = connection.getInputStream();
                        byte[] buffer = new byte[mBufferSize];
                        int length = -1;
                        while ((length = is.read(buffer)) != -1) {
                            try {
                                randomAccessFile.write(buffer, 0, length);
                            } catch (Exception e) {
                                retry = -1;
                                break;
                            }
                            completeSize += length;
                            onProgressUpdated(completeSize, 0);
                            if (PAUSE == mState) {
                                break;
                            }
                        }
                        if (mDownloadInfo.isDownloadCompleted()) {
                            // ??.temp
                            renameFile(mLocalFilePath + TEMP_FILE_SUFFIX, mLocalFilePath);
                            onSuccess();
                            break;
                        }
                    } catch (IOException e) {
                        if (retry <= 0) {
                            onError(CONNECTION_ERR);
                            XLog.e(CLASS_NAME, e.getMessage());
                        }
                        // ,?1?
                        try {
                            Thread.sleep(RETRY_INTERVAL);
                        } catch (InterruptedException ex) {
                            XLog.e(CLASS_NAME, "sleep be interrupted", ex);
                        }
                    } finally {
                        try {
                            if (null != is) {
                                is.close();
                            }
                            if (null != randomAccessFile) {
                                // new URL??randomAccessFilenull
                                randomAccessFile.close();
                            }
                            if (null != connection) {
                                // new URL??connectionnull
                                connection.disconnect();
                            }
                        } catch (IOException e) {
                            XLog.e(CLASS_NAME, e.getMessage());
                        }
                    }
                } while ((DOWNLOADING == mState) && (0 < retry--));
            }
        }).start();
    }
}

From source file:hydrograph.ui.perspective.dialog.PreStartActivity.java

private boolean updateINIFile(String javaHome) {
    logger.debug("Updating JAVA_HOME in ini file ::" + javaHome);
    javaHome = "-vm\n" + javaHome + "\n";
    RandomAccessFile file = null;
    boolean isUpdated = false;
    try {//from  w w w . jav a  2  s .  c o m
        file = new RandomAccessFile(new File(HYDROGRAPH_INI), "rw");
        byte[] text = new byte[(int) file.length()];
        file.readFully(text);
        file.seek(0);
        file.writeBytes(javaHome);
        file.write(text);
        isUpdated = true;
    } catch (IOException ioException) {
        logger.error("IOException occurred while updating " + HYDROGRAPH_INI + " file", ioException);
    } finally {
        try {
            if (file != null) {
                file.close();
            }
        } catch (IOException ioException) {
            logger.error("IOException occurred while updating " + HYDROGRAPH_INI + " file", ioException);
        }
    }
    return isUpdated;
}

From source file:com.bristle.javalib.io.FileUtil.java

/**************************************************************************
* Copy the contents of the specified binary file to the specified Writer.
*@param  strFilename       Name of the file to copy.
*@param  writer            Writer to write to.
*@throws FileNotFoundException//from  w  w  w  .  j ava  2 s  . c o m
*                           When binary file not found.
*@throws IOException        When an I/O error occurs reading the file or 
*                           writing it to the Writer.
**************************************************************************/
public static void copyBinaryFileToWriter(String strFilename, Writer writer)
        throws FileNotFoundException, IOException {
    RandomAccessFile file = new RandomAccessFile(strFilename, "r");
    try {
        int i;
        while (-1 != (i = file.read())) {
            writer.write((char) i);
        }
        writer.flush();
    } finally {
        file.close();
    }
}

From source file:com.kkbox.toolkit.image.KKImageRequest.java

@Override
public Bitmap doInBackground(Object... params) {
    Bitmap bitmap;//from www .  j a  va2 s.  co m
    try {
        int readLength;
        cachePath = KKImageManager.getTempImagePath(context, url);
        File cacheFile = new File(cachePath);
        File localFile = null;
        String tempFilePath = context.getCacheDir().getAbsolutePath() + File.separator + "image"
                + File.separator + hashCode();
        if (localPath != null) {
            localFile = new File(localPath);
        }
        try {
            if (cacheFile.exists()) {
                if (actionType == KKImageManager.ActionType.DOWNLOAD) {
                    if (localFile == null || !localFile.exists()) {
                        cryptToFile(cachePath, localPath);
                    }
                    return null;
                } else {
                    bitmap = decodeBitmap(cachePath);
                    if (bitmap != null) {
                        if (localPath != null && saveToLocal && (localFile == null || !localFile.exists())) {
                            cryptToFile(cachePath, localPath);
                        }
                        return bitmap;
                    } else {
                        removeCacheFile();
                    }
                }
            }
            if (localFile != null && localFile.exists()) {
                if (actionType == KKImageManager.ActionType.DOWNLOAD) {
                    return null;
                } else {
                    cryptToFile(localPath, tempFilePath);
                    moveFileTo(tempFilePath, cachePath);
                    bitmap = decodeBitmap(cachePath);
                    if (bitmap != null) {
                        return bitmap;
                    } else {
                        removeCacheFile();
                    }
                }
            }
        } catch (Exception e) {
        }
        // Do fetch server resource if either cache nor local file is not valid to read
        if (!KKImageManager.networkEnabled) {
            return null;
        }
        final HttpGet httpget = new HttpGet(url);
        response = httpclient.execute(httpget);
        final InputStream is = response.getEntity().getContent();
        headers = response.getAllHeaders();
        removeInvalidImageFiles();
        if (actionType == KKImageManager.ActionType.DOWNLOAD) {
            RandomAccessFile tempFile = new RandomAccessFile(tempFilePath, "rw");
            while ((readLength = is.read(buffer, 0, buffer.length)) != -1) {
                if (interuptFlag) {
                    return null;
                }
                if (cipher != null) {
                    buffer = cipher.doFinal(buffer);
                }
                tempFile.write(buffer, 0, readLength);
            }
            tempFile.close();
            moveFileTo(tempFilePath, localPath);
            return null;
        } else {
            RandomAccessFile tempFile;
            try {
                tempFile = new RandomAccessFile(tempFilePath, "rw");
            } catch (IOException e) {
                // we don't save to SD card if cache is full
                return BitmapFactory.decodeStream(is);
            }
            try {
                while ((readLength = is.read(buffer, 0, buffer.length)) != -1) {
                    if (interuptFlag) {
                        return null;
                    }
                    tempFile.write(buffer, 0, readLength);
                }
            } catch (IOException e) {
                tempFile.close();
                return null;
            }
            tempFile.close();
            moveFileTo(tempFilePath, cachePath);
            bitmap = decodeBitmap(cachePath);
            if (bitmap != null) {
                if (saveToLocal && localPath != null) {
                    cryptToFile(cachePath, localPath);
                }
                return bitmap;
            }
        }
    } catch (final Exception e) {
        isNetworkError = true;
        removeInvalidImageFiles();
    }
    return null;
}

From source file:net.modsec.ms.connector.ConnRequestHandler.java

/**
 * Writes the modified modsecurity configurations to configuration file.
 * @param json contains modsecurity configurations as json object.
 *//*from   w  w w  .  j a  v a 2s. c om*/
@SuppressWarnings("unchecked")
public static void onWriteMSConfig(JSONObject json) {

    log.info("onWriteMSConfig called.. : " + json.toJSONString());

    MSConfig serviceCfg = MSConfig.getInstance();
    JSONObject jsonResp = new JSONObject();
    String fileName = serviceCfg.getConfigMap().get("MSConfigFile");
    String modifiedStr = "";

    InputStream ins = null;
    FileOutputStream out = null;
    BufferedReader br = null;

    try {

        File file = new File(fileName);
        DataInputStream in;

        @SuppressWarnings("resource")
        FileChannel channel = new RandomAccessFile(file, "rw").getChannel();
        FileLock lock = channel.lock();

        try {

            ins = new FileInputStream(file);
            in = new DataInputStream(ins);
            br = new BufferedReader(new InputStreamReader(in));

            String line = "";
            boolean check;

            while ((line = br.readLine()) != null) {

                check = true;
                //log.info("Line :" + line);
                for (ModSecConfigFields field : ModSecConfigFields.values()) {

                    if (line.startsWith(field.toString())) {
                        if (line.trim().split(" ")[0].equals(field.toString())) {
                            if (json.containsKey(field.toString())) {

                                if (((String) json.get(field.toString())).equals("")
                                        || json.get(field.toString()) == null) {

                                    log.info("---------- Log Empty value ----:"
                                            + (String) json.get(field.toString()));
                                    json.remove(field.toString());
                                    check = false;
                                    continue;

                                } else {

                                    modifiedStr += field.toString() + " " + json.remove(field.toString())
                                            + "\n";
                                    check = false;

                                }

                            }
                        }
                    }

                }

                if (check) {
                    modifiedStr += line + "\n";
                }

            }

            for (ModSecConfigFields field : ModSecConfigFields.values()) {
                if (json.containsKey(field.toString())) {

                    if (json.get(field.toString()) == null
                            || ((String) json.get(field.toString())).equals("")) {

                        log.info("---------- Log Empty value ----:" + (String) json.get(field.toString()));
                        json.remove(field.toString());
                        check = false;
                        continue;

                    } else {
                        modifiedStr += field.toString() + " " + json.remove(field.toString()) + "\n";
                    }

                }

            }

            //modified string writing to modsecurity configurations
            log.info("Writing File :" + modifiedStr);
            out = new FileOutputStream(fileName);
            out.write(modifiedStr.getBytes());

            log.info("ModSecurity Configurations configurations Written ... ");

        } finally {

            lock.release();

        }

        br.close();
        in.close();
        ins.close();
        out.close();

        //For Restarting modsecurity so that modified configuration can be applied
        JSONObject restartJson = new JSONObject();
        restartJson.put("action", "restart");

        String cmd = serviceCfg.getConfigMap().get("MSRestart");

        executeShScript(cmd, restartJson);

        jsonResp.put("action", "writeMSConfig");
        jsonResp.put("status", "0");
        jsonResp.put("message", "Configurations updated!");

    } catch (FileNotFoundException e1) {

        jsonResp.put("action", "writeMSConfig");
        jsonResp.put("status", "1");
        jsonResp.put("message", "Internal Service is down!");
        e1.printStackTrace();

    } catch (IOException | NullPointerException e) {

        jsonResp.put("action", "writeMSConfig");
        jsonResp.put("status", "0");
        jsonResp.put("message", "Unable to modify configurations. Sorry of inconvenience");
        e.printStackTrace();

    }

    log.info("Sending Json :" + jsonResp.toJSONString());
    ConnectorService.getConnectorProducer().send(jsonResp.toJSONString());
    jsonResp.clear();
}

From source file:com.norconex.commons.lang.io.CachedOutputStream.java

@SuppressWarnings("resource")
private void cacheToFile() throws IOException {
    fileCache = File.createTempFile("CachedOutputStream-", "-temp", cacheDirectory);
    fileCache.deleteOnExit();/*from  w w w  . ja v a2  s. co  m*/
    LOG.debug("Reached max cache size. Swapping to file: " + fileCache);
    RandomAccessFile f = new RandomAccessFile(fileCache, "rw");
    FileChannel channel = f.getChannel();
    fileOutputStream = Channels.newOutputStream(channel);

    IOUtils.write(memOutputStream.toByteArray(), fileOutputStream);
    memOutputStream = null;
}

From source file:net.sf.ehcache.store.DiskStore.java

private void initialiseFiles() throws Exception {
    // Make sure the cache directory exists
    final File diskDir = new File(diskPath);
    if (diskDir.exists() && !diskDir.isDirectory()) {
        throw new Exception(
                "Store directory \"" + diskDir.getCanonicalPath() + "\" exists and is not a directory.");
    }//www  .  ja  v a2s .  c  om
    if (!diskDir.exists() && !diskDir.mkdirs()) {
        throw new Exception("Could not create cache directory \"" + diskDir.getCanonicalPath() + "\".");
    }

    dataFile = new File(diskDir, getDataFileName());
    indexFile = new File(diskDir, getIndexFileName());

    deleteIndexIfNoData();

    if (persistent) {
        //if diskpath contains auto generated string
        if (diskPath.indexOf(AUTO_DISK_PATH_DIRECTORY_PREFIX) != -1) {
            LOG.warn(
                    "Data in persistent disk stores is ignored for stores from automatically created directories"
                            + " (they start with " + AUTO_DISK_PATH_DIRECTORY_PREFIX + ").\n"
                            + "Remove diskPersistent or resolve the conflicting disk paths in cache configuration.\n"
                            + "Deleting data file " + getDataFileName());
            dataFile.delete();
        } else if (!readIndex()) {
            if (LOG.isDebugEnabled()) {
                LOG.debug("Index file dirty or empty. Deleting data file " + getDataFileName());
            }
            dataFile.delete();
        }
    } else {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Deleting data file " + getDataFileName());
        }
        dataFile.delete();
        indexFile = null;
    }

    // Open the data file as random access. The dataFile is created if necessary.
    randomAccessFile = new RandomAccessFile(dataFile, "rw");
}

From source file:com.ibm.watson.developer_cloud.android.text_to_speech.v1.TTSUtility.java

private byte[] analyzeOpusData(InputStream is) {
    String inFilePath = getBaseDir() + "Watson.opus";
    String outFilePath = getBaseDir() + "Watson.pcm";
    File inFile = new File(inFilePath);
    File outFile = new File(outFilePath);
    outFile.deleteOnExit();//from   w ww .j  a v a  2  s  .  co  m
    inFile.deleteOnExit();

    try {
        RandomAccessFile inRaf = new RandomAccessFile(inFile, "rw");
        byte[] opus = IOUtils.toByteArray(is);
        inRaf.write(opus);

        sampleRate = OggOpus.decode(inFilePath, outFilePath, sampleRate); // zero means to detect the sample rate by decoder

        RandomAccessFile outRaf = new RandomAccessFile(outFile, "r");

        byte[] data = new byte[(int) outRaf.length()];

        int outLength = outRaf.read(data);

        inRaf.close();
        outRaf.close();
        if (outLength == 0) {
            throw new IOException("Data reading failed");
        }
        return data;
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return new byte[0];
}

From source file:com.yobidrive.diskmap.needles.NeedleManager.java

private void initializeNeedleFiles() throws NeedleManagerException {
    // Browse directory for needle files (won't find any if rebuild required)
    String files[] = logDir.list();
    if (files != null) {
        for (String file : files) {
            // Verifies file name pattern and extracts file number
            int extIndex = file.indexOf(EXTENSION);
            if (extIndex <= 0)
                continue;
            int fileNumber = -1;
            String hexString = file.substring(0, extIndex);
            try {
                fileNumber = Integer.parseInt(hexString, 16);
            } catch (Throwable th) {
                fileNumber = -1;/*from w w w.j a v  a 2 s.c  om*/
            }
            if (fileNumber < 0) {
                // Normal situation: non log files (including the bucket file)
                continue;
            }
            if (fileNumber > logNumber)
                logNumber = fileNumber;
            File needleFile = new File(logDir, file);
            if (!needleFile.canRead() || !needleFile.canWrite()) {
                logger.error("No read/write access to " + logPath + "/" + file);
                throw new NeedleManagerException();
            }
            RandomAccessFile needleRFile;
            try {
                needleRFile = new RandomAccessFile(needleFile, mode); // AutoCommit of content writes (rws), content + meta (rwd), or nothing (rw)
            } catch (Throwable th) {
                logger.error("File not found " + logPath + "/" + file);
                throw new NeedleManagerException();
            }
            FileChannel needleChannel = needleRFile.getChannel();
            channelMap.putIfAbsent(fileNumber, needleChannel);
        }
    }
}

From source file:mediathekplugin.Database.java

public ArrayList<MediathekProgramItem> getMediathekPrograms(final Program program) {
    ArrayList<MediathekProgramItem> result = new ArrayList<MediathekProgramItem>();
    String channelName = unifyChannelName(program.getChannel().getName());
    HashMap<Long, ArrayList<Integer>> programsMap = mChannelItems.get(channelName);
    // search parts in brackets like for ARD
    if (programsMap == null && channelName.contains("(")) {
        String bracketPart = StringUtils.substringBetween(channelName, "(", ")");
        programsMap = mChannelItems.get(bracketPart);
    }//from  w  w w. j  a  v a 2 s .c  o m
    // search for partial name, if full name is not found
    if (programsMap == null && channelName.contains(" ")) {
        String firstPart = StringUtils.substringBefore(channelName, " ");
        programsMap = mChannelItems.get(firstPart);
    }
    if (programsMap == null) {
        for (Entry<String, HashMap<Long, ArrayList<Integer>>> entry : mChannelItems.entrySet()) {
            if (StringUtils.startsWithIgnoreCase(channelName, entry.getKey())) {
                programsMap = entry.getValue();
                break;
            }
        }
    }
    if (programsMap == null) {
        return result;
    }
    String title = program.getTitle();
    ArrayList<Integer> programs = programsMap.get(getKey(title));
    if (programs == null && title.endsWith(")") && title.contains("(")) {
        String newTitle = StringUtils.substringBeforeLast(title, "(").trim();
        programs = programsMap.get(getKey(newTitle));
    }
    if (programs == null && title.endsWith("...")) {
        String newTitle = title.substring(0, title.length() - 3).trim();
        programs = programsMap.get(getKey(newTitle));
    }
    if (programs == null) {
        return result;
    }
    try {
        RandomAccessFile file = new RandomAccessFile(new File(mFileName), "r");
        for (Integer byteOffset : programs) {
            file.seek(byteOffset);
            String lineEncoded = file.readLine();
            String line = new String(lineEncoded.getBytes(), "UTF-8");
            Matcher itemMatcher = ITEM_PATTERN.matcher(line);
            if (itemMatcher.find()) {
                String itemTitle = itemMatcher.group(3).trim();
                String itemUrl = itemMatcher.group(4).trim();
                result.add(new MediathekProgramItem(itemTitle, itemUrl, null));
            }
        }
    } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return result;
}