Example usage for java.nio.channels FileChannel transferTo

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

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Introduction

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

Prototype

public abstract long transferTo(long position, long count, WritableByteChannel target) throws IOException;

Source Link

Document

Transfers bytes from this channel's file to the given writable byte channel.

Usage

From source file:org.apache.solr.core.CoreContainer.java

/** Copies a src file to a dest file:
 *  used to circumvent the platform discrepancies regarding renaming files.
 *///from w  w w  .j a  va  2 s  . c o m
public static void fileCopy(File src, File dest) throws IOException {
    IOException xforward = null;
    FileInputStream fis = null;
    FileOutputStream fos = null;
    FileChannel fcin = null;
    FileChannel fcout = null;
    try {
        fis = new FileInputStream(src);
        fos = new FileOutputStream(dest);
        fcin = fis.getChannel();
        fcout = fos.getChannel();
        // do the file copy 32Mb at a time
        final int MB32 = 32 * 1024 * 1024;
        long size = fcin.size();
        long position = 0;
        while (position < size) {
            position += fcin.transferTo(position, MB32, fcout);
        }
    } catch (IOException xio) {
        xforward = xio;
    } finally {
        if (fis != null)
            try {
                fis.close();
                fis = null;
            } catch (IOException xio) {
            }
        if (fos != null)
            try {
                fos.close();
                fos = null;
            } catch (IOException xio) {
            }
        if (fcin != null && fcin.isOpen())
            try {
                fcin.close();
                fcin = null;
            } catch (IOException xio) {
            }
        if (fcout != null && fcout.isOpen())
            try {
                fcout.close();
                fcout = null;
            } catch (IOException xio) {
            }
    }
    if (xforward != null) {
        throw xforward;
    }
}

From source file:org.gcaldaemon.core.Configurator.java

public static final void copyFile(File from, File to) throws Exception {
    if (from == null || to == null || !from.exists()) {
        return;/*from  w w w  .  j  a  v a 2 s . co  m*/
    }
    RandomAccessFile fromFile = null;
    RandomAccessFile toFile = null;
    try {
        fromFile = new RandomAccessFile(from, "r");
        toFile = new RandomAccessFile(to, "rw");
        FileChannel fromChannel = fromFile.getChannel();
        FileChannel toChannel = toFile.getChannel();
        long length = fromFile.length();
        long start = 0;
        while (start < length) {
            start += fromChannel.transferTo(start, length - start, toChannel);
        }
        fromChannel.close();
        toChannel.close();
    } finally {
        if (fromFile != null) {
            fromFile.close();
        }
        if (toFile != null) {
            toFile.close();
        }
    }
}

From source file:gov.nih.nci.ncicb.tcga.dcc.common.util.FileUtil.java

public static void copy(final String sourceFilename, final String destFilename) throws IOException {

    FileInputStream sourceFileInputStream = null;
    FileChannel sourceChannel = null;
    FileOutputStream destFileOutputStream = null;
    FileChannel destChannel = null;

    try {//  www .  ja v  a2  s  .c  o  m
        File destFile = new File(destFilename);
        final File sourceFile = new File(sourceFilename);
        if (destFile.isDirectory()) {
            // use original file's name
            destFile = new File(destFile, sourceFile.getName());
        }

        //noinspection IOResourceOpenedButNotSafelyClosed
        sourceFileInputStream = new FileInputStream(sourceFile);
        //noinspection ChannelOpenedButNotSafelyClosed
        sourceChannel = (sourceFileInputStream).getChannel();

        //noinspection IOResourceOpenedButNotSafelyClosed
        destFileOutputStream = new FileOutputStream(destFile);
        //noinspection ChannelOpenedButNotSafelyClosed
        destChannel = (destFileOutputStream).getChannel();

        final long size = sourceFile.length();
        long toTransfer = size;
        while (toTransfer > 0) {
            toTransfer -= sourceChannel.transferTo(size - toTransfer, toTransfer, destChannel);
        }

    } finally {
        IOUtils.closeQuietly(sourceFileInputStream);
        IOUtils.closeQuietly(sourceChannel);
        IOUtils.closeQuietly(destFileOutputStream);
        IOUtils.closeQuietly(destChannel);
    }
}

From source file:org.paxle.crawler.fs.impl.FsCrawler.java

private File copyChanneled(final File file, final ICrawlerDocument cdoc, final boolean useFsync) {
    logger.info(String.format("Copying '%s' using the copy mechanism of the OS%s", file,
            (useFsync) ? " with fsync" : ""));

    final ITempFileManager tfm = this.contextLocal.getCurrentContext().getTempFileManager();
    if (tfm == null) {
        cdoc.setStatus(ICrawlerDocument.Status.UNKNOWN_FAILURE,
                "Cannot access ITempFileMananger from " + Thread.currentThread().getName());
        return null;
    }/*from www  . j  a  v  a 2 s .co  m*/

    FileInputStream fis = null;
    FileOutputStream fos = null;
    File out = null;
    try {
        out = tfm.createTempFile();
        fis = new FileInputStream(file);
        fos = new FileOutputStream(out);

        final FileChannel in_fc = fis.getChannel();
        final FileChannel out_fc = fos.getChannel();

        long txed = 0L;
        while (txed < in_fc.size())
            txed += in_fc.transferTo(txed, in_fc.size() - txed, out_fc);

        if (useFsync)
            out_fc.force(false);
        out_fc.close();

        try {
            detectFormats(cdoc, fis);
        } catch (IOException ee) {
            logger.warn(
                    String.format("Error detecting format of '%s': %s", cdoc.getLocation(), ee.getMessage()));
        }
    } catch (IOException e) {
        logger.error(String.format("Error copying '%s' to '%s': %s", cdoc.getLocation(), out, e.getMessage()),
                e);
        cdoc.setStatus(ICrawlerDocument.Status.UNKNOWN_FAILURE, e.getMessage());
    } finally {
        if (fis != null)
            try {
                fis.close();
            } catch (IOException e) {
                /* ignore */}
        if (fos != null)
            try {
                fos.close();
            } catch (IOException e) {
                /* ignore */}
    }
    return out;
}

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

private void moveFileTo(String originalPath, String targetPath) {
    fileLock.lock();/*ww  w  . ja  v  a  2 s .  c o m*/
    File targetFile = new File(targetPath);
    targetFile.delete();
    FileChannel originalChannel = null;
    FileChannel targetChannel = null;
    try {
        originalChannel = new FileInputStream(originalPath).getChannel();
        targetChannel = new FileOutputStream(targetPath).getChannel();
        originalChannel.transferTo(0, originalChannel.size(), targetChannel);
    } catch (IOException e) {
    }
    try {
        if (originalChannel != null)
            originalChannel.close();
        if (targetChannel != null)
            targetChannel.close();
    } catch (IOException e) {
    }
    fileLock.unlock();
}

From source file:org.apache.cordova.backgroundDownload.BackgroundDownload.java

private void copyFile(File src, File dest) throws IOException {
    FileChannel inChannel = new FileInputStream(src).getChannel();
    FileChannel outChannel = new FileOutputStream(dest).getChannel();
    try {/*w w  w .ja  v a  2s .co  m*/
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null) {
            inChannel.close();
        }
        if (outChannel != null) {
            outChannel.close();
        }
    }
}

From source file:com.intervigil.micdroid.MainActivity.java

@Override
public void onExport(Recording r) {
    if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
        Log.w(TAG, "onExport: External media is not available");
        Toast.makeText(mContext, R.string.recording_options_export_external_media_unavailable,
                Toast.LENGTH_SHORT).show();
        return;//from   w ww  . ja  v a 2  s .  c om
    }
    File externalMusicDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC);
    if (!externalMusicDir.exists() && !externalMusicDir.mkdirs()) {
        Log.e(TAG, "onExport: Failed to create external music directory");
        Toast.makeText(mContext, R.string.recording_options_export_external_music_dir_unavailable,
                Toast.LENGTH_SHORT).show();
        return;
    }

    File exported = new File(externalMusicDir, r.getName());
    FileChannel srcChannel = null;
    FileChannel dstChannel = null;
    try {
        srcChannel = mContext.openFileInput(r.getName()).getChannel();
        dstChannel = new FileOutputStream(exported).getChannel();

        srcChannel.transferTo(0, srcChannel.size(), dstChannel);

        Toast.makeText(mContext, R.string.recording_options_export_complete, Toast.LENGTH_SHORT).show();
    } catch (IOException e) {
        Log.e(TAG, "onExport: Failed to export file: " + r.getName());
        e.printStackTrace();
        Toast.makeText(mContext, R.string.recording_options_export_copy_error, Toast.LENGTH_SHORT).show();
    } finally {
        try {
            if (srcChannel != null) {
                srcChannel.close();
            }
            if (dstChannel != null) {
                dstChannel.close();
            }
        } catch (IOException e) {
            // Do nothing
        }
    }
}

From source file:org.gnucash.android.export.ExportAsyncTask.java

/**
 * Moves a file from <code>src</code> to <code>dst</code>
 * @param src Absolute path to the source file
 * @param dst Absolute path to the destination file
 * @throws IOException if the file could not be moved.
 *//*from w  ww.j  a  v a  2  s  .  c o  m*/
public void moveFile(String src, String dst) throws IOException {
    File srcFile = new File(src);
    File dstFile = new File(dst);
    FileChannel inChannel = new FileInputStream(srcFile).getChannel();
    FileChannel outChannel = new FileOutputStream(dstFile).getChannel();
    try {
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        if (inChannel != null)
            inChannel.close();
        outChannel.close();
    }
    srcFile.delete();
}

From source file:it.readbeyond.minstrel.commander.Commander.java

private void copyFile(String sourcePath, String destinationPath, final CallbackContext callbackContext) {
    String source = this.normalizePath(sourcePath);
    String destination = this.normalizePath(destinationPath);
    try {/*w  w w. j  av  a 2s  . com*/
        File f = new File(source);
        if (f.exists()) {
            File d = new File(destination);

            // create parent directory, if not existing
            File destinationParent = d.getParentFile();
            destinationParent.mkdirs();

            // TODO check for write permission?
            // copy file
            FileInputStream inStream = new FileInputStream(f);
            FileOutputStream outStream = new FileOutputStream(d);
            FileChannel inChannel = inStream.getChannel();
            FileChannel outChannel = outStream.getChannel();
            inChannel.transferTo(0, inChannel.size(), outChannel);
            inStream.close();
            outStream.close();
            callbackContext.success(MESSAGE_FILE_COPIED);

        } else {
            callbackContext.success(MESSAGE_FILE_DOES_NOT_EXIST);
        }
    } catch (Exception e) {
        callbackContext.success(MESSAGE_ERROR_WHILE_COPYING);
    }
}

From source file:org.opennms.features.newts.converter.rrd.converter.JRobinConverter.java

public boolean moveFileSafely(final File in, final File out) throws IOException {
    FileInputStream fis = null;/* ww  w.java2s. c om*/
    FileOutputStream fos = null;
    FileChannel inChannel = null;
    FileChannel outChannel = null;
    final File tempOut = File.createTempFile("move", ".tmp");
    try {
        fis = new FileInputStream(in);
        fos = new FileOutputStream(tempOut);
        inChannel = fis.getChannel();
        outChannel = fos.getChannel();
        inChannel.transferTo(0, inChannel.size(), outChannel);
    } finally {
        try {
            if (inChannel != null)
                inChannel.close();
        } catch (IOException e) {
            LogUtils.debugf(JRobinConverter.class, "failed to close channel %s", inChannel);
        }
        try {
            if (outChannel != null)
                outChannel.close();
        } catch (IOException e) {
            LogUtils.debugf(JRobinConverter.class, "failed to close channel %s", outChannel);
        }
        try {
            if (fis != null)
                fis.close();
        } catch (IOException e) {
            LogUtils.debugf(JRobinConverter.class, "failed to close stream %s", fis);
        }
        try {
            if (fos != null)
                fos.close();
        } catch (IOException e) {
            LogUtils.debugf(JRobinConverter.class, "failed to close stream %s", fos);
        }
    }
    out.delete();
    if (!out.exists()) {
        tempOut.renameTo(out);
        return in.delete();
    }
    return false;
}