Examples with FileChannel java.nio.channels.FileChannel used on opensource projects

Example 61 with FileChannel

use of java.nio.channels.FileChannel in project react-native-image-picker by marcshilling.

the class ImagePickerModule method moveFile.

/**
   * Move a file from one location to another.
   *
   * This is done via copy + deletion, because Android will throw an error
   * if you try to move a file across mount points, e.g. to the SD card.
   */
private void moveFile(final File oldFile, final File newFile) throws IOException {
    FileChannel oldChannel = null;
    FileChannel newChannel = null;
    try {
        oldChannel = new FileInputStream(oldFile).getChannel();
        newChannel = new FileOutputStream(newFile).getChannel();
        oldChannel.transferTo(0, oldChannel.size(), newChannel);
        oldFile.delete();
    } finally {
        try {
            if (oldChannel != null)
                oldChannel.close();
            if (newChannel != null)
                newChannel.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Example 62 with FileChannel

use of java.nio.channels.FileChannel in project dagger by square.

the class BuildLogValidator method getBuildOutput.

private String getBuildOutput(File buildLogfile) throws Throwable {
    String buildOutput;
    FileInputStream stream = new FileInputStream(buildLogfile);
    try {
        FileChannel fc = stream.getChannel();
        MappedByteBuffer buf = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
        buildOutput = Charset.defaultCharset().decode(buf).toString();
    } finally {
        stream.close();
    }
    if (buildOutput == null) {
        throw new Exception("Could not read build output");
    }
    return buildOutput;
}

Example 63 with FileChannel

use of java.nio.channels.FileChannel in project RxDownload by ssseasonnn.

the class FileHelper method readDownloadRange.

public DownloadRange readDownloadRange(File tempFile, int i) throws IOException {
    RandomAccessFile record = null;
    FileChannel channel = null;
    try {
        record = new RandomAccessFile(tempFile, ACCESS);
        channel = record.getChannel();
        MappedByteBuffer buffer = channel.map(READ_WRITE, i * EACH_RECORD_SIZE, (i + 1) * EACH_RECORD_SIZE);
        long startByte = buffer.getLong();
        long endByte = buffer.getLong();
        return new DownloadRange(startByte, endByte);
    } finally {
        closeQuietly(channel);
        closeQuietly(record);
    }
}

Example 64 with FileChannel

use of java.nio.channels.FileChannel in project RxDownload by ssseasonnn.

the class FileHelper method tempFileDamaged.

public boolean tempFileDamaged(File tempFile, long fileLength) throws IOException {
    RandomAccessFile record = null;
    FileChannel channel = null;
    try {
        record = new RandomAccessFile(tempFile, ACCESS);
        channel = record.getChannel();
        MappedByteBuffer buffer = channel.map(READ_WRITE, 0, RECORD_FILE_TOTAL_SIZE);
        long recordTotalSize = buffer.getLong(RECORD_FILE_TOTAL_SIZE - 8) + 1;
        return recordTotalSize != fileLength;
    } finally {
        closeQuietly(channel);
        closeQuietly(record);
    }
}

Example 65 with FileChannel

use of java.nio.channels.FileChannel in project RxDownload by ssseasonnn.

the class FileHelper method saveFile.

public void saveFile(FlowableEmitter<DownloadStatus> emitter, int i, File tempFile, File saveFile, ResponseBody response) {
    RandomAccessFile record = null;
    FileChannel recordChannel = null;
    RandomAccessFile save = null;
    FileChannel saveChannel = null;
    InputStream inStream = null;
    try {
        try {
            int readLen;
            byte[] buffer = new byte[2048];
            DownloadStatus status = new DownloadStatus();
            record = new RandomAccessFile(tempFile, ACCESS);
            recordChannel = record.getChannel();
            MappedByteBuffer recordBuffer = recordChannel.map(READ_WRITE, 0, RECORD_FILE_TOTAL_SIZE);
            int startIndex = i * EACH_RECORD_SIZE;
            long start = recordBuffer.getLong(startIndex);
            //                long end = recordBuffer.getLong(startIndex + 8);
            long totalSize = recordBuffer.getLong(RECORD_FILE_TOTAL_SIZE - 8) + 1;
            status.setTotalSize(totalSize);
            save = new RandomAccessFile(saveFile, ACCESS);
            saveChannel = save.getChannel();
            inStream = response.byteStream();
            while ((readLen = inStream.read(buffer)) != -1 && !emitter.isCancelled()) {
                MappedByteBuffer saveBuffer = saveChannel.map(READ_WRITE, start, readLen);
                start += readLen;
                saveBuffer.put(buffer, 0, readLen);
                recordBuffer.putLong(startIndex, start);
                status.setDownloadSize(totalSize - getResidue(recordBuffer));
                emitter.onNext(status);
            }
            emitter.onComplete();
        } finally {
            closeQuietly(record);
            closeQuietly(recordChannel);
            closeQuietly(save);
            closeQuietly(saveChannel);
            closeQuietly(inStream);
            closeQuietly(response);
        }
    } catch (IOException e) {
        emitter.onError(e);
    }
}