Example usage for java.nio.channels FileChannel size

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

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Introduction

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

Prototype

public abstract long size() throws IOException;

Source Link

Document

Returns the current size of this channel's file.

Usage

From source file:org.datavaultplatform.common.io.FileCopy.java

/**
 * Internal copy file method.//ww  w  .  java2  s.  c  o m
 * 
 * @param progress  the progress tracking object
 * @param srcFile  the validated source file, must not be {@code null}
 * @param destFile  the validated destination file, must not be {@code null}
 * @param preserveFileDate  whether to preserve the file date
 * @throws IOException if an error occurs
 */
private static void doCopyFile(Progress progress, File srcFile, File destFile, boolean preserveFileDate)
        throws IOException {
    if (destFile.exists() && destFile.isDirectory()) {
        throw new IOException("Destination '" + destFile + "' exists but is a directory");
    }

    FileInputStream fis = null;
    FileOutputStream fos = null;
    FileChannel input = null;
    FileChannel output = null;
    try {
        fis = new FileInputStream(srcFile);
        fos = new FileOutputStream(destFile);
        input = fis.getChannel();
        output = fos.getChannel();
        long size = input.size();
        long pos = 0;
        long count = 0;
        while (pos < size) {
            count = size - pos > FILE_COPY_BUFFER_SIZE ? FILE_COPY_BUFFER_SIZE : size - pos;
            long copied = output.transferFrom(input, pos, count);
            pos += copied;
            progress.byteCount += copied;
            progress.timestamp = System.currentTimeMillis();
        }
    } finally {
        IOUtils.closeQuietly(output);
        IOUtils.closeQuietly(fos);
        IOUtils.closeQuietly(input);
        IOUtils.closeQuietly(fis);
    }

    if (srcFile.length() != destFile.length()) {
        throw new IOException("Failed to copy full contents from '" + srcFile + "' to '" + destFile + "'");
    }
    if (preserveFileDate) {
        destFile.setLastModified(srcFile.lastModified());
    }

    progress.fileCount += 1;
}

From source file:biz.bokhorst.xprivacy.Util.java

public static void copy(File src, File dst) throws IOException {
    FileInputStream inStream = null;
    try {//from www. ja v a  2 s .com
        inStream = new FileInputStream(src);
        FileOutputStream outStream = null;
        try {
            outStream = new FileOutputStream(dst);
            FileChannel inChannel = inStream.getChannel();
            FileChannel outChannel = outStream.getChannel();
            inChannel.transferTo(0, inChannel.size(), outChannel);
        } finally {
            if (outStream != null)
                outStream.close();
        }
    } finally {
        if (inStream != null)
            inStream.close();
    }
}

From source file:gov.nasa.ensemble.common.io.FileUtilities.java

/**
 * Make a copy of a file on the filesystem (platform independent).
 * //from www .j a  va2 s.  c  om
 * @param source
 *            the file to copy.
 * @param dest
 *            the copy to make.
 * @return whether the file copy exists on the filesystem upon completion.
 * @throws IOException
 */
public static boolean copyFile(File source, File dest) throws IOException {
    FileInputStream sourceStream = new FileInputStream(source);
    FileChannel sourceChannel = sourceStream.getChannel();
    FileOutputStream destStream = new FileOutputStream(dest);
    FileChannel destChannel = destStream.getChannel();
    try {
        sourceChannel.transferTo(0, sourceChannel.size(), destChannel);
    } catch (IOException ex) {
        if (ex.getCause() instanceof OutOfMemoryError) {
            IOUtils.copy(sourceStream, destStream);
        }
    } finally {
        destChannel.close();
        IOUtils.closeQuietly(destStream);
        sourceChannel.close();
        IOUtils.closeQuietly(sourceStream);
    }

    return dest.exists();
}

From source file:org.solmix.commons.util.Files.java

/**
 * ?// w  w  w .ja  v a 2s . c o  m
 *
 * @param f1
 *            ?
 * @param f2
 *            
 * @throws Exception
 */
public static void copyFile(File f1, File f2) throws Exception {
    int length = 2097152;
    FileInputStream in = new FileInputStream(f1);
    FileOutputStream out = new FileOutputStream(f2);
    FileChannel inC = in.getChannel();
    FileChannel outC = out.getChannel();
    ByteBuffer b = null;
    while (true) {
        if (inC.position() == inC.size()) {
            inC.close();
            outC.close();
        }
        if ((inC.size() - inC.position()) < length) {
            length = (int) (inC.size() - inC.position());
        } else
            length = 2097152;
        b = ByteBuffer.allocateDirect(length);
        inC.read(b);
        b.flip();
        outC.write(b);
        outC.force(false);
    }
}

From source file:org.uva.itast.blended.omr.OMRUtils.java

/**
 * Mtodo que a partir de un fichero pdf de entrada devuelve el
 * nmero su pginas//from   w w w  . j a  v a 2 s .  co m
 * 
 * @param inputdir
 * @return pdffile.getNumpages();
 * @throws IOException
 */
public static int getNumpagesPDF(String inputdir) throws IOException {
    RandomAccessFile raf = new RandomAccessFile(inputdir, "r"); // se carga
    // la imagen
    // pdf para
    // leerla
    FileChannel channel = raf.getChannel();
    ByteBuffer buf = channel.map(FileChannel.MapMode.READ_ONLY, 0, channel.size());
    PDFFile pdffile = new PDFFile(buf); // se crea un objeto de tipo PDFFile
    // para almacenar las pginas
    return pdffile.getNumPages(); // se obtiene el nmero de paginas
}

From source file:it.geosolutions.tools.io.file.IOUtils.java

/**
 * Optimize version of copy method for file channels.
 * // w  w  w  .  j  a  va2  s .c  o  m
 * @param bufferSize
 *            size of the temp buffer to use for this copy.
 * @param source
 *            the source {@link ReadableByteChannel}.
 * @param destination
 *            the destination {@link WritableByteChannel};.
 * @throws IOException
 *             in case something bad happens.
 */
public static void copyFileChannel(int bufferSize, FileChannel source, FileChannel destination)
        throws IOException {

    Objects.notNull(source, destination);
    if (!source.isOpen() || !destination.isOpen())
        throw new IllegalStateException("Source and destination channels must be open.");
    FileLock lock = null;
    try {

        lock = destination.lock();
        final long sourceSize = source.size();
        long pos = 0;
        while (pos < sourceSize) {
            // read and flip
            final long remaining = (sourceSize - pos);
            final int mappedZoneSize = remaining >= bufferSize ? bufferSize : (int) remaining;
            destination.transferFrom(source, pos, mappedZoneSize);
            // update zone
            pos += mappedZoneSize;

        }
    } finally {
        if (lock != null) {
            try {
                lock.release();
            } catch (Throwable t) {
                if (LOGGER.isInfoEnabled())
                    LOGGER.info(t.getLocalizedMessage(), t);
            }
        }

    }
}

From source file:phex.utils.FileUtils.java

/**
 * From Apache Jakarta Commons IO./* w  w w .j a  v  a  2 s  . c  o  m*/
 * 
 * Internal copy file method.
 * 
 * @param srcFile  the validated source file, not null
 * @param destFile  the validated destination file, not null
 * @param preserveFileDate  whether to preserve the file date
 * @throws IOException if an error occurs
 */
private static void doCopyFile(File srcFile, File destFile, boolean preserveFileDate) throws IOException {
    if (destFile.exists() && destFile.isDirectory()) {
        throw new IOException("Destination '" + destFile + "' exists but is a directory");
    }

    FileChannel input = new FileInputStream(srcFile).getChannel();
    try {
        FileChannel output = new FileOutputStream(destFile).getChannel();
        try {
            output.transferFrom(input, 0, input.size());
        } finally {
            IOUtil.closeQuietly(output);
        }
    } finally {
        IOUtil.closeQuietly(input);
    }

    if (srcFile.length() != destFile.length()) {
        throw new IOException("Failed to copy full contents from '" + srcFile + "' to '" + destFile + "'");
    }
    if (preserveFileDate) {
        destFile.setLastModified(srcFile.lastModified());
    }
}

From source file:com.opendesign.utils.CmnUtil.java

/**
 * ? /*from   w  ww  . j a  v  a2  s. co  m*/
 * 
 * @param oldFilePath
 * @param newFilePath
 */
public static void fileCopy(String oldFilePath, String newFilePath) {
    File oldFile = new File(oldFilePath);
    File newFile = new File(newFilePath);
    try {
        FileInputStream inputStream = new FileInputStream(oldFile);
        FileOutputStream outputStream = new FileOutputStream(newFile);
        FileChannel fcin = inputStream.getChannel();
        FileChannel fcout = outputStream.getChannel();

        long size = fcin.size();
        fcin.transferTo(0, size, fcout);

        fcout.close();
        fcin.close();
        outputStream.close();
        inputStream.close();
    } catch (Exception e) {
    }
}

From source file:com.opendesign.utils.CmnUtil.java

/**
 * ? /*from  w ww  . j  av a  2  s .  co  m*/
 * 
 * @param oldFilePath
 * @param oldFileName
 * @param newFilePath
 * @param newFileName
 */
public static void fileCopy(String oldFilePath, String oldFileName, String newFilePath, String newFileName) {
    File oldFile = new File(oldFilePath, oldFileName);
    File newFile = new File(newFilePath, newFileName);
    try {
        FileInputStream inputStream = new FileInputStream(oldFile);
        FileOutputStream outputStream = new FileOutputStream(newFile);
        FileChannel fcin = inputStream.getChannel();
        FileChannel fcout = outputStream.getChannel();

        long size = fcin.size();
        fcin.transferTo(0, size, fcout);

        fcout.close();
        fcin.close();
        outputStream.close();
        inputStream.close();
    } catch (Exception e) {
    }
}

From source file:phex.util.FileUtils.java

/**
 * From Apache Jakarta Commons IO.//from w w  w  .  j  a  v  a 2s  . c  o m
 * <p>
 * Internal copy file method.
 *
 * @param srcFile          the validated source file, not null
 * @param destFile         the validated destination file, not null
 * @param preserveFileDate whether to preserve the file date
 * @throws IOException if an error occurs
 */
private static void doCopyFile(File srcFile, File destFile, boolean preserveFileDate) throws IOException {
    if (destFile.exists() && destFile.isDirectory()) {
        throw new IOException("Destination '" + destFile + "' exists but is a directory");
    }

    FileChannel input = new FileInputStream(srcFile).getChannel();
    try {
        FileChannel output = new FileOutputStream(destFile).getChannel();
        try {
            output.transferFrom(input, 0, input.size());
        } finally {
            IOUtil.closeQuietly(output);
        }
    } finally {
        IOUtil.closeQuietly(input);
    }

    if (srcFile.length() != destFile.length()) {
        throw new IOException("Failed to copy full contents from '" + srcFile + "' to '" + destFile + '\'');
    }
    if (preserveFileDate) {
        destFile.setLastModified(srcFile.lastModified());
    }
}