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:com.igormaznitsa.jcp.utils.PreprocessorUtils.java

public static void copyFile(@Nonnull final File source, @Nonnull final File dest,
        final boolean copyFileAttributes) throws IOException {
    assertNotNull("Source is null", source);
    assertNotNull("Destination file is null", dest);

    if (source.isDirectory()) {
        throw new IllegalArgumentException("Source file is directory");
    }// w  w w  . ja v  a  2s . c o m

    if (!dest.getParentFile().exists() && !dest.getParentFile().mkdirs()) {
        throw new IOException("Can't make directory [" + getFilePath(dest.getParentFile()) + ']');
    }

    FileChannel fileSrc = null;
    FileChannel fileDst = null;
    final FileInputStream fileSrcInput = new FileInputStream(source);
    FileOutputStream fileOutput = null;
    try {
        fileSrc = fileSrcInput.getChannel();
        fileOutput = new FileOutputStream(dest);
        fileDst = fileOutput.getChannel();
        long size = fileSrc.size();
        long pos = 0L;
        while (size > 0) {
            final long written = fileSrc.transferTo(pos, size, fileDst);
            pos += written;
            size -= written;
        }
    } finally {
        IOUtils.closeQuietly(fileSrcInput);
        IOUtils.closeQuietly(fileOutput);
        IOUtils.closeQuietly(fileDst);
        IOUtils.closeQuietly(fileSrc);
    }

    if (copyFileAttributes) {
        copyFileAttributes(source, dest);
    }
}

From source file:com.hipu.bdb.util.FileUtils.java

/**
  * Copy up to extent bytes of the source file to the destination
  */*from   w w w. ja  v  a  2 s.com*/
  * @param src
  * @param dest
  * @param extent Maximum number of bytes to copy
 * @param overwrite If target file already exits, and this parameter is
  * true, overwrite target file (We do this by first deleting the target
  * file before we begin the copy).
 * @return True if the extent was greater than actual bytes copied.
  * @throws FileNotFoundException
  * @throws IOException
  */
public static boolean copyFile(final File src, final File dest, long extent, final boolean overwrite)
        throws FileNotFoundException, IOException {
    boolean result = false;
    if (LOGGER.isLoggable(Level.FINE)) {
        LOGGER.fine("Copying file " + src + " to " + dest + " extent " + extent + " exists " + dest.exists());
    }
    if (dest.exists()) {
        if (overwrite) {
            dest.delete();
            LOGGER.finer(dest.getAbsolutePath() + " removed before copy.");
        } else {
            // Already in place and we're not to overwrite.  Return.
            return result;
        }
    }
    FileInputStream fis = null;
    FileOutputStream fos = null;
    FileChannel fcin = null;
    FileChannel fcout = null;
    try {
        // Get channels
        fis = new FileInputStream(src);
        fos = new FileOutputStream(dest);
        fcin = fis.getChannel();
        fcout = fos.getChannel();
        if (extent < 0) {
            extent = fcin.size();
        }

        // Do the file copy
        long trans = fcin.transferTo(0, extent, fcout);
        if (trans < extent) {
            result = false;
        }
        result = true;
    } catch (IOException e) {
        // Add more info to the exception. Preserve old stacktrace.
        // We get 'Invalid argument' on some file copies. See
        // http://intellij.net/forums/thread.jsp?forum=13&thread=63027&message=853123
        // for related issue.
        String message = "Copying " + src.getAbsolutePath() + " to " + dest.getAbsolutePath() + " with extent "
                + extent + " got IOE: " + e.getMessage();
        if ((e instanceof ClosedByInterruptException)
                || ((e.getMessage() != null) && e.getMessage().equals("Invalid argument"))) {
            LOGGER.severe("Failed copy, trying workaround: " + message);
            workaroundCopyFile(src, dest);
        } else {
            IOException newE = new IOException(message);
            newE.initCause(e);
            throw newE;
        }
    } finally {
        // finish up
        if (fcin != null) {
            fcin.close();
        }
        if (fcout != null) {
            fcout.close();
        }
        if (fis != null) {
            fis.close();
        }
        if (fos != null) {
            fos.close();
        }
    }
    return result;
}

From source file:edu.stanford.epad.common.util.EPADFileUtils.java

public static File copyFile(File src, File dst) {
    FileChannel inChannel = null;
    FileChannel outChannel = null;
    try {//from www .  ja v  a 2 s .  c o  m
        inChannel = new FileInputStream(src).getChannel();
        outChannel = new FileOutputStream(dst).getChannel();
        inChannel.transferTo(0, inChannel.size(), outChannel);
        return dst;
    } catch (Exception e) {
        log.warning("Error copying file, from " + src.getAbsolutePath() + " to " + dst.getAbsolutePath(), e);
    } finally {
        try {
            if (inChannel != null)
                inChannel.close();
            if (outChannel != null)
                outChannel.close();
        } catch (IOException e) {
        }
    }
    return null;
}

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

public static boolean copyFile(final String sourceFilename, final String destFilename) {
    boolean success = false;
    FileChannel source = null;
    FileChannel destination = null;
    FileInputStream sourceStream = null;
    FileOutputStream destinationStream = null;
    final File destFile = new File(destFilename);
    final File sourceFile = new File(sourceFilename);
    try {/* w w w  . ja  va 2 s. c  o  m*/
        final long size = sourceFile.length();
        sourceStream = new FileInputStream(sourceFile);
        destinationStream = new FileOutputStream(destFile);
        source = sourceStream.getChannel();
        destination = destinationStream.getChannel();
        long toTransfer = size;
        while (toTransfer > 0) {
            toTransfer -= source.transferTo(size - toTransfer, toTransfer, destination);
        }
        success = true;
    } catch (IOException iox) {
        try {
            logger.error(
                    "Unable to copy " + sourceFile.getCanonicalPath() + " to " + destFile.getCanonicalPath(),
                    iox);
        } catch (IOException iox2) {
            logger.error("Unable to copy " + sourceFile.getName() + " OR get the canonical name", iox2);
        }
    } finally {
        try {
            if (source != null) {
                source.close();
                source = null;
            }
            if (destination != null) {
                destination.close();
                destination = null;
            }
            if (sourceStream != null) {
                sourceStream.close();
                sourceStream = null;
            }
            if (destinationStream != null) {
                destinationStream.close();
                destinationStream = null;
            }
        } catch (IOException iox3) {
            logger.error("Unable to close stream?!?", iox3);
        }
    }
    return success;
}

From source file:org.mycore.common.content.util.MCRServletContentHelper.java

private static long copyFileChannel(final FileChannel src, final WritableByteChannel dest, final int bufferSize)
        throws IOException {
    long bytes = 0L;
    long time = -System.currentTimeMillis();
    long size = src.size();
    while (bytes < size) {
        long bytesToTransfer = Math.min(bufferSize, size - bytes);
        long bytesTransfered = src.transferTo(bytes, bytesToTransfer, dest);

        bytes += bytesTransfered;/*w w  w. ja v a  2s. co m*/

        if (LOGGER.isDebugEnabled()) {
            long percentage = Math.round(bytes / ((double) size) * 100.0);
            LOGGER.debug("overall bytes transfered: " + bytes + " progress " + percentage + "%");
        }

    }

    if (LOGGER.isDebugEnabled()) {
        time += System.currentTimeMillis();
        double kBps = (bytes / 1024.0) / (time / 1000.0);
        LOGGER.debug("Transfered: " + bytes + " bytes in: " + (time / 1000.0) + " s -> " + kBps + " kbytes/s");
    }
    return bytes;
}

From source file:com.almunt.jgcaap.systemupdater.DownloadService.java

public void copy(File src, File dst) throws IOException {
    FileInputStream inStream = new FileInputStream(src);
    FileOutputStream outStream = new FileOutputStream(dst);
    FileChannel inChannel = inStream.getChannel();
    FileChannel outChannel = outStream.getChannel();
    inChannel.transferTo(0, inChannel.size(), outChannel);
    inStream.close();//from w  w w  .  jav a2 s.c om
    outStream.close();
}

From source file:com.geekandroid.sdk.sample.crop.ResultActivity.java

private void copyFileToDownloads(Uri croppedFileUri) throws Exception {
    String downloadsDirectoryPath = Environment
            .getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).getAbsolutePath();
    String filename = String.format("%d_%s", Calendar.getInstance().getTimeInMillis(),
            croppedFileUri.getLastPathSegment());

    File saveFile = new File(downloadsDirectoryPath, filename);

    FileInputStream inStream = new FileInputStream(new File(croppedFileUri.getPath()));
    FileOutputStream outStream = new FileOutputStream(saveFile);
    FileChannel inChannel = inStream.getChannel();
    FileChannel outChannel = outStream.getChannel();
    inChannel.transferTo(0, inChannel.size(), outChannel);
    inStream.close();/*from   w  w w .  j  av  a  2  s  .com*/
    outStream.close();

    showNotification(saveFile);
}

From source file:org.openmrs.module.formentry.FormEntryUtil.java

/**
 * Generates an expanded 'starter XSN'. This starter is essentially a blank XSN template to play
 * with in Infopath. Should be used similar to
 * <code>org.openmrs.module.formentry.FormEntryUtil.expandXsnContents(java.lang.String)</code>
 * Generates an expanded 'starter XSN'. This starter is essentially a blank XSN template to play
 * with in Infopath. Should be used similar to
 * <code>org.openmrs.formentry.FormEntryUtil.expandXsnContents(java.lang.String)</code>
 * //from  w  w  w  .  ja va2s. co m
 * @return File directory holding blank xsn contents
 * @throws IOException
 */
public static File getExpandedStarterXSN() throws IOException {

    // temp directory to hold the new xsn contents
    File tempDir = FormEntryUtil.createTempDirectory("XSN-starter");
    if (tempDir == null)
        throw new IOException("Failed to create temporary directory");

    // iterate over and copy each file in the given folder
    File starterDir = getResourceFile(FormEntryConstants.FORMENTRY_STARTER_XSN_FOLDER_PATH);
    for (File f : starterDir.listFiles()) {
        File newFile = new File(tempDir, f.getName());
        FileChannel in = null, out = null;
        try {
            in = new FileInputStream(f).getChannel();
            out = new FileOutputStream(newFile).getChannel();
            in.transferTo(0, in.size(), out);
        } finally {
            if (in != null)
                in.close();
            if (out != null)
                out.close();
        }
    }

    return tempDir;
}

From source file:net.librec.util.FileUtil.java

/**
 * fast file copy/* w w  w .j a va 2  s  .co  m*/
 *
 * @param source source file
 * @param target target file
 * @throws Exception if error occurs
 */
public static void copyFile(File source, File target) throws Exception {

    FileInputStream fis = new FileInputStream(source);
    FileOutputStream fos = new FileOutputStream(target);
    FileChannel inChannel = fis.getChannel();
    FileChannel outChannel = fos.getChannel();

    // inChannel.transferTo(0, inChannel.size(), outChannel);
    // original -- apparently has trouble copying large files on Windows

    // magic number for Windows, 64Mb - 32Kb
    int maxCount = (64 * 1024 * 1024) - (32 * 1024);
    long size = inChannel.size();
    long position = 0;
    while (position < size) {
        position += inChannel.transferTo(position, maxCount, outChannel);
    }

    inChannel.close();
    outChannel.close();
    fis.close();
    fos.close();
}

From source file:ar.com.init.agros.license.LicenseVerifier.java

public void installLicense(String file) throws Exception {

    File licenseFile = new File(file);
    if (!isMasterLicense(file)) {
        licenseManager = new LicenseManager(createLicenseParam());
        licenseManager.install(licenseFile);
    } else {/*w  w w.ja v  a  2s .c om*/
        logger.fine("Using master license");
    }
    File installedFile = new File(INSTALLED_LICENSE_FILE);

    if (!installedFile.exists()) {
        FileChannel in = (new FileInputStream(licenseFile)).getChannel();
        FileChannel out = (new FileOutputStream(installedFile)).getChannel();
        in.transferTo(0, licenseFile.length(), out);
        in.close();
        out.close();
    }
}