Example usage for java.nio.channels FileChannel transferFrom

List of usage examples for java.nio.channels FileChannel transferFrom

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Introduction

In this page you can find the example usage for java.nio.channels FileChannel transferFrom.

Prototype

public abstract long transferFrom(ReadableByteChannel src, long position, long count) throws IOException;

Source Link

Document

Transfers bytes into this channel's file from the given readable byte channel.

Usage

From source file:org.jajuk.util.UtilSystem.java

/**
 * Save a file in the same directory with name <filename>_YYYYmmddHHMM.xml and
 * with a given maximum Mb size for the file and its backup files
 * //www.  j  a v a  2  s . c om
 * @param file The file to back up
 * @param iMB 
 */
public static void backupFile(final File file, final int iMB) {
    try {
        if (Integer.parseInt(Conf.getString(Const.CONF_BACKUP_SIZE)) <= 0) {
            // 0 or less means no backup
            return;
        }
        // calculates total size in MB for the file to backup and its
        // backup files
        long lUsedMB = 0;
        final List<File> alFiles = new ArrayList<File>(10);
        final File[] files = new File(file.getAbsolutePath()).getParentFile().listFiles();
        if (files != null) {
            for (final File element : files) {
                if (element.getName().indexOf(UtilSystem.removeExtension(file.getName())) != -1) {
                    lUsedMB += element.length();
                    alFiles.add(element);
                }
            }
            // sort found files
            alFiles.remove(file);
            Collections.sort(alFiles);
            // too much backup files, delete older
            if (((lUsedMB - file.length()) / 1048576 > iMB) && (alFiles.size() > 0)) {
                final File fileToDelete = alFiles.get(0);
                if (fileToDelete != null) { //NOSONAR
                    if (!fileToDelete.delete()) {
                        Log.warn("Could not delete file " + fileToDelete);
                    }
                }
            }
        }
        // backup itself using nio, file name is
        // collection-backup-yyyMMdd.xml
        final String sExt = new SimpleDateFormat("yyyyMMdd", Locale.getDefault()).format(new Date());
        final File fileNew = new File(UtilSystem.removeExtension(file.getAbsolutePath()) + "-backup-" + sExt
                + "." + UtilSystem.getExtension(file));
        final FileChannel fcSrc = new FileInputStream(file).getChannel();
        try {
            final FileChannel fcDest = new FileOutputStream(fileNew).getChannel();
            try {
                fcDest.transferFrom(fcSrc, 0, fcSrc.size());
            } finally {
                fcDest.close();
            }
        } finally {
            fcSrc.close();
        }
    } catch (final IOException ie) {
        Log.error(ie);
    }
}

From source file:com.ettrema.zsync.UploadReader.java

/**
 * Copies a Range of blocks from rc into a new offset of wc
 * //from ww  w.jav  a 2s  .c o  m
 * @param rc A FileChannel for the input File
 * @param reloc The RelocateRange specifying the Range to be copied and its new offset
 * @param blockSize The block size used by reloc
 * @param wc The FileChannel for the output File
 * @throws IOException
 */
private static void moveRange(FileChannel rc, RelocateRange reloc, int blockSize, FileChannel wc)
        throws IOException {

    long MAX_BUFFER = 16384;

    long startBlock = reloc.getBlockRange().getStart();
    long finishBlock = reloc.getBlockRange().getFinish();

    long bytesLeft = (finishBlock - startBlock) * blockSize; //bytes left to copy
    long readAtOnce = 0; //number of bytes to attempt to read
    long bytesRead = 0; //number of bytes actually read
    long currOffset = reloc.getOffset(); //current write position

    if (finishBlock * blockSize > rc.size() || startBlock < 0) {

        throw new RuntimeException("Invalid RelocateRange: Source file does not contain blocks "
                + reloc.getBlockRange().getRange());
    }

    rc.position(startBlock * blockSize);
    while (bytesLeft > 0) {
        readAtOnce = Math.min(bytesLeft, MAX_BUFFER);

        /*Because transferFrom does not update the write channel's position, 
         * it needs to be set manually
         */
        bytesRead = wc.transferFrom(rc, currOffset, readAtOnce);
        bytesLeft -= bytesRead;
        currOffset += bytesRead;
    }

}

From source file:eu.prestoprime.plugin.p4.CopyTasks.java

@WfService(name = "master_file_first_copy", version = "2.0.0")
public void masterFileFirstCopy(Map<String, String> sParams, Map<String, String> dParamsString,
        Map<String, File> dParamsFile) throws TaskExecutionFailedException {

    // get sipID/* www  .j a  va  2  s.c  o  m*/
    String sipID = dParamsString.get("sipID");

    SIP sip = null;
    try {
        // get sip
        sip = P4DataManager.getInstance().getSIPByID(sipID);

        String inputVideo = null;

        // get MQ file
        String[] formats = sParams.get("MQformats").split(",");
        for (String format : formats) {

            List<String> videoFileList = sip.getAVMaterial(format, "FILE");
            if (videoFileList.size() > 0) {
                inputVideo = videoFileList.get(0);
                String outputVideoName = inputVideo.substring(inputVideo.lastIndexOf(File.separator) + 1);
                String outputVideo = dParamsString.get("videosFolder") + File.separator + outputVideoName;

                File inputFile = new File(inputVideo);
                File outputFile = new File(outputVideo);

                if (!outputFile.exists()) {
                    outputFile.createNewFile();
                }
                FileChannel source = new FileInputStream(inputFile).getChannel();
                FileChannel destination = new FileOutputStream(outputFile).getChannel();
                destination.transferFrom(source, 0, source.size());

                // MD5
                MessageDigestExtractor mde = new MessageDigestExtractor();
                ToolOutput<MessageDigestExtractor.AttributeType> output = mde.extract(outputVideo);
                String md5sum = output.getAttribute(MessageDigestExtractor.AttributeType.MD5);

                // update SIP
                sip.addFile(format, "FILE", outputVideo, md5sum, new File(outputVideo).length());

                break;
            }
        }
        if (inputVideo == null) {
            throw new TaskExecutionFailedException("Unable to find supported MQ format...");
        }
    } catch (DataException e) {
        e.printStackTrace();
        throw new TaskExecutionFailedException("Unable to retrieve the SIP...");
    } catch (IPException e) {
        e.printStackTrace();
        throw new TaskExecutionFailedException("Unable to retrieve MQ file from SIP...");
    } catch (IOException e) {
        e.printStackTrace();
        throw new TaskExecutionFailedException("Unable to copy MQ file...");
    } catch (ToolException e) {
        e.printStackTrace();
        throw new TaskExecutionFailedException("Unable to compute MD5 for WebM video file...");
    } finally {
        P4DataManager.getInstance().releaseIP(sip);
    }
}

From source file:com.symbian.driver.plugins.romflash.Activator.java

public boolean FlashRom(String romLocation) {

    try {/*from  www. ja v a2 s  . c o  m*/
        File rom = new File(romLocation);
        if (method.compareToIgnoreCase("serial") == 0) {
            if (!(switchOff() && switchOn())) {
                LOGGER.log(Level.SEVERE, "Could not reboot device, so No rom flashing.");
                return false;
            }
            try {
                Thread.sleep(10000);
            } catch (InterruptedException e) {
                LOGGER.log(Level.SEVERE, "Failed to wait for sync.exe to finish.");
            }
            File trgtTestFile = JarUtils.extractResource(Activator.class, "/resource/trgtest.exe");
            if (trgtTestFile.isFile()) {
                ProcessBuilder ld = new ProcessBuilder(trgtTestFile.getAbsolutePath(), portNumber,
                        rom.getCanonicalPath());
                ld.directory(trgtTestFile.getParentFile());
                Process pp = ld.start();
                LOGGER.log(Level.INFO, "started trgtest process");
                BufferedReader br = new BufferedReader(new InputStreamReader(pp.getInputStream()));
                StringBuffer sb = new StringBuffer();
                String line;
                while ((line = br.readLine()) != null) {
                    sb.append(line).append("\n");
                    LOGGER.log(Level.INFO, line);
                }
                //String answer = sb.toString();

                try {
                    LOGGER.log(Level.INFO, "going to wait now for trgtest to finish");
                    pp.waitFor();
                } catch (InterruptedException e) {
                    LOGGER.log(Level.SEVERE, "Failed to wait for trgtest.exe to finish.");
                }
                LOGGER.log(Level.INFO, "trgtest returned: " + pp.exitValue());
                pp.destroy();

            } else {
                LOGGER.log(Level.SEVERE, "Could not find trgtest.exe file.");
            }
        } else // usb rom loading
        {
            // switch the device off...
            switchOff();
            List<File> lis1 = Arrays.asList(File.listRoots());
            // get reboot plugin, and reboot the device
            switchOn(); // or just switch on as things may be
            try {
                Thread.sleep(10000);
            } catch (InterruptedException e) {
                LOGGER.log(Level.SEVERE, "Failed to wait for sync.exe to finish.");
            }
            File[] listRoots2 = File.listRoots();
            // find the drive that made the difference!!
            File diff = null;
            for (File root : listRoots2) {
                if (!lis1.contains(root)) // found new drive
                {
                    diff = root;
                    break;
                }
            }
            File romfl = new File(diff, rom.getName());
            romfl.delete();
            File aCopyFrom = new File(rom.getCanonicalPath());
            FileChannel lSrcChannel = new FileInputStream(aCopyFrom).getChannel();
            FileChannel lDstChannel = new FileOutputStream(romfl).getChannel();
            lDstChannel.transferFrom(lSrcChannel, 0, lSrcChannel.size());
            lSrcChannel.close();
            lDstChannel.close();

            File syncFile = JarUtils.extractResource(Activator.class, "/resource/sync.exe");
            if (syncFile.isFile()) {

                ProcessBuilder ld = new ProcessBuilder(syncFile.getAbsolutePath(), "-r", "-e", diff.toString());

                ld.directory(syncFile.getParentFile());
                ld.start();
                // wait 10 seconds for the rom to load ...
                try {
                    Thread.sleep(10000);
                } catch (InterruptedException e) {
                    LOGGER.log(Level.SEVERE, "Failed to wait for sync.exe to finish.");
                }
            } else {
                LOGGER.log(Level.SEVERE, "Could not find sync.exe file.");
            }
        }
    } catch (IOException lIOException) {
        LOGGER.log(Level.SEVERE, "Could not flash ROM " + lIOException.getMessage());
        return false;
    }
    try {
        Thread.sleep(10000);
    } catch (InterruptedException e) {
        LOGGER.log(Level.SEVERE, "Failed to wait for sync.exe to finish.");
    }
    return true;
}

From source file:eu.prestoprime.plugin.p4.CopyTasks.java

@WfService(name = "master_file_second_copy", version = "2.0.0")
public void masterFileSecondCopy(Map<String, String> sParams, Map<String, String> dParamsString,
        Map<String, File> dParamsFile) throws TaskExecutionFailedException {

    // get sipID/*from w w w.j av  a 2s  .  co m*/
    String sipID = dParamsString.get("sipID");

    SIP sip = null;
    try {
        // get sip
        sip = P4DataManager.getInstance().getSIPByID(sipID);

        String inputVideo = null;

        // get MQ file
        String[] formats = sParams.get("MQformats").split(",");
        for (String format : formats) {

            List<String> videoFileList = sip.getAVMaterial(format, "FILE");
            if (videoFileList.size() > 0) {
                inputVideo = videoFileList.get(0);

                String outputFolder = sParams.get("second.local.copy.folder") + File.separator + sipID;
                new File(outputFolder).mkdirs();
                String outputVideoName = inputVideo.substring(inputVideo.lastIndexOf(File.separator) + 1);
                String outputVideo = outputFolder + File.separator + outputVideoName;

                File inputFile = new File(inputVideo);
                File outputFile = new File(outputVideo);

                if (!outputFile.exists()) {
                    outputFile.createNewFile();
                }
                FileChannel source = new FileInputStream(inputFile).getChannel();
                FileChannel destination = new FileOutputStream(outputFile).getChannel();
                destination.transferFrom(source, 0, source.size());

                // MD5
                MessageDigestExtractor mde = new MessageDigestExtractor();
                ToolOutput<MessageDigestExtractor.AttributeType> output = mde.extract(outputVideo);
                String md5sum = output.getAttribute(MessageDigestExtractor.AttributeType.MD5);

                // update SIP
                sip.addFile(format, "FILE-BCK", outputVideo, md5sum, new File(outputVideo).length());

                break;
            }
        }
        if (inputVideo == null) {
            throw new TaskExecutionFailedException("Unable to find supported MQ format...");
        }
    } catch (DataException e) {
        e.printStackTrace();
        throw new TaskExecutionFailedException("Unable to retrieve the SIP...");
    } catch (IPException e) {
        e.printStackTrace();
        throw new TaskExecutionFailedException("Unable to retrieve MQ file from SIP...");
    } catch (IOException e) {
        e.printStackTrace();
        throw new TaskExecutionFailedException("Unable to copy MQ file...");
    } catch (ToolException e) {
        e.printStackTrace();
        throw new TaskExecutionFailedException("Unable to compute MD5 for WebM video file...");
    } finally {
        P4DataManager.getInstance().releaseIP(sip);
    }
}

From source file:eu.europa.esig.dss.DSSUtils.java

public static void copyFile(final String path, final File sourceFile, final File destinationFile)
        throws IOException {

    final File destinationPath = new File(path);
    if (!destinationPath.exists()) {
        destinationPath.mkdirs();/*from www.  jav  a2 s . co m*/
        destinationFile.createNewFile();
    }

    FileChannel source = null;
    FileChannel destination = null;

    try {
        source = new FileInputStream(sourceFile).getChannel();
        destination = new FileOutputStream(destinationFile).getChannel();
        destination.transferFrom(source, 0, source.size());
    } finally {
        if (source != null) {
            source.close();
        }
        if (destination != null) {
            destination.close();
        }
    }
}

From source file:org.python.pydev.core.REF.java

/**
 * Copy a file from one place to another.
 * /* www.j  a v a  2s . co  m*/
 * Example from: http://www.exampledepot.com/egs/java.nio/File2File.html
 * 
 * @param srcFilename the source file
 * @param dstFilename the destination
 */
public static void copyFile(String srcFilename, String dstFilename) {
    FileChannel srcChannel = null;
    FileChannel dstChannel = null;
    try {
        // Create channel on the source
        srcChannel = new FileInputStream(srcFilename).getChannel();

        // Create channel on the destination
        dstChannel = new FileOutputStream(dstFilename).getChannel();

        // Copy file contents from source to destination
        dstChannel.transferFrom(srcChannel, 0, srcChannel.size());

    } catch (IOException e) {
        throw new RuntimeException(e);
    } finally {
        // Close the channels
        if (srcChannel != null) {
            try {
                srcChannel.close();
            } catch (IOException e) {
                Log.log(e);
            }
        }
        if (dstChannel != null) {
            try {
                dstChannel.close();
            } catch (IOException e) {
                Log.log(e);
            }
        }
    }

}

From source file:display.containers.FileManager.java

public static boolean copyFile(File from, File to) throws IOException {

    boolean created = to.createNewFile();

    if (created) {
        FileChannel fromChannel = null;
        FileChannel toChannel = null;
        try {/*  w w w .  j av  a  2  s  .  c om*/
            fromChannel = new FileInputStream(from).getChannel();
            toChannel = new FileOutputStream(to).getChannel();

            toChannel.transferFrom(fromChannel, 0, fromChannel.size());

            // set the flags of the to the same as the from
            to.setReadable(from.canRead());
            to.setWritable(from.canWrite());
            to.setExecutable(from.canExecute());
        } finally {
            if (fromChannel != null) {
                fromChannel.close();
            }
            if (toChannel != null) {
                toChannel.close();
            }
            return false;
        }
    }
    return created;
}

From source file:de.suse.swamp.core.container.WorkflowManager.java

/**
 * Copy all files from "fromDir" to "toDir".
 * Will create the destination location if needed.
 * @throws Exception if source not existant or error occurs.
 *///from w w  w.j a  va  2 s  .  c o m
private void copyDirContent(String fromDir, String toDir) throws Exception {
    String fs = System.getProperty("file.separator");
    File[] files = new File(fromDir).listFiles();
    if (files == null) {
        throw new FileNotFoundException("Sourcepath: " + fromDir + " not found!");
    }
    for (int i = 0; i < files.length; i++) {
        File dir = new File(toDir);
        dir.mkdirs();
        if (files[i].isFile()) {
            try {
                // Create channel on the source
                FileChannel srcChannel = new FileInputStream(files[i]).getChannel();
                // Create channel on the destination
                FileChannel dstChannel = new FileOutputStream(toDir + fs + files[i].getName()).getChannel();
                dstChannel.transferFrom(srcChannel, 0, srcChannel.size());
                srcChannel.close();
                dstChannel.close();
            } catch (Exception e) {
                Logger.ERROR("Error during file copy: " + e.getMessage());
                throw e;
            }
        }
    }
}

From source file:com.gatf.generator.core.GatfTestGeneratorMojo.java

/**
 * @param sourceFile/*ww w.j  a v  a2 s  . com*/
 * @param destFile
 * @throws IOException Copy a file to some desired location
 */
@SuppressWarnings("resource")
public static void copyFile(File sourceFile, File destFile) throws IOException {
    if (!destFile.exists()) {
        destFile.createNewFile();
    }

    FileChannel source = null;
    FileChannel destination = null;
    try {
        source = new FileInputStream(sourceFile).getChannel();
        destination = new FileOutputStream(destFile).getChannel();

        // previous code: destination.transferFrom(source, 0, source.size());
        // to avoid infinite loops, should be:
        long count = 0;
        long size = source.size();
        while ((count += destination.transferFrom(source, count, size - count)) < size)
            ;
    } finally {
        if (source != null) {
            source.close();
        }
        if (destination != null) {
            destination.close();
        }
    }
}