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

Example 31 with FileChannel

use of java.nio.channels.FileChannel in project platform_frameworks_base by android.

the class FontFamily method addFont.

public boolean addFont(String path, int ttcIndex) {
    try (FileInputStream file = new FileInputStream(path)) {
        FileChannel fileChannel = file.getChannel();
        long fontSize = fileChannel.size();
        ByteBuffer fontBuffer = fileChannel.map(FileChannel.MapMode.READ_ONLY, 0, fontSize);
        return nAddFont(mNativePtr, fontBuffer, ttcIndex);
    } catch (IOException e) {
        Log.e(TAG, "Error mapping font file " + path);
        return false;
    }
}

Example 32 with FileChannel

use of java.nio.channels.FileChannel in project platform_frameworks_base by android.

the class Typeface method makeFamilyFromParsed.

private static FontFamily makeFamilyFromParsed(FontListParser.Family family, Map<String, ByteBuffer> bufferForPath) {
    FontFamily fontFamily = new FontFamily(family.lang, family.variant);
    for (FontListParser.Font font : family.fonts) {
        ByteBuffer fontBuffer = bufferForPath.get(font.fontName);
        if (fontBuffer == null) {
            try (FileInputStream file = new FileInputStream(font.fontName)) {
                FileChannel fileChannel = file.getChannel();
                long fontSize = fileChannel.size();
                fontBuffer = fileChannel.map(FileChannel.MapMode.READ_ONLY, 0, fontSize);
                bufferForPath.put(font.fontName, fontBuffer);
            } catch (IOException e) {
                Log.e(TAG, "Error mapping font file " + font.fontName);
                continue;
            }
        }
        if (!fontFamily.addFontWeightStyle(fontBuffer, font.ttcIndex, font.axes, font.weight, font.isItalic)) {
            Log.e(TAG, "Error creating font " + font.fontName + "#" + font.ttcIndex);
        }
    }
    return fontFamily;
}

Example 33 with FileChannel

use of java.nio.channels.FileChannel in project androidquery by androidquery.

the class AbstractAQuery method makeSharedFile.

/**
	 * Create a temporary file on EXTERNAL storage (sdcard) that holds the cached content of the url.
	 * Returns null if url is not cached, or the system cannot create such file (sdcard is absent, such as in emulator).
	 * 
	 * The returned file is accessable to all apps, therefore it is ideal for sharing content (such as photo) via the intent mechanism.
	 * 
	 * <br>
	 * <br>
	 * Example Usage:
	 * 
	 * <pre>
	 *	Intent intent = new Intent(Intent.ACTION_SEND);
	 *	intent.setType("image/jpeg");
	 *	intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));
	 *	startActivityForResult(Intent.createChooser(intent, "Share via:"), 0);
	 * </pre>
	 * 
	 * <br>
	 * The temp file will be deleted when AQUtility.cleanCacheAsync is invoked, or the file can be explicitly deleted after use.
	 * 
	 * @param url The url of the desired cached content.
	 * @param filename The desired file name, which might be used by other apps to describe the content, such as an email attachment.
	 * @return temp file
	 * 
	 */
public File makeSharedFile(String url, String filename) {
    File file = null;
    try {
        File cached = getCachedFile(url);
        if (cached != null) {
            File temp = AQUtility.getTempDir();
            if (temp != null) {
                file = new File(temp, filename);
                file.createNewFile();
                FileInputStream fis = new FileInputStream(cached);
                FileOutputStream fos = new FileOutputStream(file);
                FileChannel ic = fis.getChannel();
                FileChannel oc = fos.getChannel();
                try {
                    ic.transferTo(0, ic.size(), oc);
                } finally {
                    AQUtility.close(fis);
                    AQUtility.close(fos);
                    AQUtility.close(ic);
                    AQUtility.close(oc);
                }
            }
        }
    } catch (Exception e) {
        AQUtility.debug(e);
    }
    return file;
}

Example 34 with FileChannel

use of java.nio.channels.FileChannel in project otter by alibaba.

the class NioUtils method copy.

/**
     * 基于流的数据copy
     */
public static long copy(InputStream input, OutputStream output) throws IOException {
    long count = 0;
    long n = 0;
    if (input instanceof FileInputStream) {
        FileChannel inChannel = ((FileInputStream) input).getChannel();
        WritableByteChannel outChannel = Channels.newChannel(output);
        count = inChannel.transferTo(0, inChannel.size(), outChannel);
    } else if (output instanceof FileOutputStream) {
        FileChannel outChannel = ((FileOutputStream) output).getChannel();
        ReadableByteChannel inChannel = Channels.newChannel(input);
        do {
            n = outChannel.transferFrom(inChannel, count, DEFAULT_BUFFER_SIZE);
            count += n;
        } while (n > 0);
    } else {
        byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
        while (-1 != (n = input.read(buffer))) {
            output.write(buffer, 0, (int) n);
            count += n;
        }
    // ReadableByteChannel inChannel = Channels.newChannel(input);
    // WritableByteChannel outChannel = Channels.newChannel(output);
    //            
    // //ByteBuffer buffer = new ByteBuffer(DEFAULT_BUFFER_SIZE);
    // ByteBuffer buffer = ByteBuffer.allocateDirect(DEFAULT_BUFFER_SIZE);
    // while (-1 != (n = inChannel.read(buffer))) {
    // outChannel.write(buffer);
    // count += n;
    // }
    }
    return count;
}

Example 35 with FileChannel

use of java.nio.channels.FileChannel in project graphhopper by graphhopper.

the class NativeFSLockFactory method main.

public static void main(String[] args) throws IOException {
    // trying FileLock mechanics in different processes
    File file = new File("tmp.lock");
    file.createNewFile();
    FileChannel channel = new RandomAccessFile(file, "r").getChannel();
    boolean shared = true;
    FileLock lock1 = channel.tryLock(0, Long.MAX_VALUE, shared);
    System.out.println("locked " + lock1);
    System.in.read();
    System.out.println("release " + lock1);
    lock1.release();
}