The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/mobile/android/base/mozglue/ByteBufferInputStream.java	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,64 @@
     1.4 +/* -*- Mode: Java; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil; -*-
     1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +package org.mozilla.gecko.mozglue;
    1.10 +
    1.11 +import java.io.InputStream;
    1.12 +import java.nio.ByteBuffer;
    1.13 +
    1.14 +class ByteBufferInputStream extends InputStream {
    1.15 +
    1.16 +    protected ByteBuffer mBuf;
    1.17 +    // Reference to a native object holding the data backing the ByteBuffer.
    1.18 +    private NativeReference mNativeRef;
    1.19 +
    1.20 +    protected ByteBufferInputStream(ByteBuffer buffer, NativeReference ref) {
    1.21 +        mBuf = buffer;
    1.22 +        mNativeRef = ref;
    1.23 +    }
    1.24 +
    1.25 +    @Override
    1.26 +    public int available() {
    1.27 +        return mBuf.remaining();
    1.28 +    }
    1.29 +
    1.30 +    @Override
    1.31 +    public void close() {
    1.32 +        mBuf = null;
    1.33 +        mNativeRef.release();
    1.34 +    }
    1.35 +
    1.36 +    @Override
    1.37 +    public int read() {
    1.38 +        if (!mBuf.hasRemaining() || mNativeRef.isReleased()) {
    1.39 +            return -1;
    1.40 +        }
    1.41 +
    1.42 +        return mBuf.get() & 0xff; // Avoid sign extension
    1.43 +    }
    1.44 +
    1.45 +    @Override
    1.46 +    public int read(byte[] buffer, int offset, int length) {
    1.47 +        if (!mBuf.hasRemaining() || mNativeRef.isReleased()) {
    1.48 +            return -1;
    1.49 +        }
    1.50 +
    1.51 +        length = Math.min(length, mBuf.remaining());
    1.52 +        mBuf.get(buffer, offset, length);
    1.53 +        return length;
    1.54 +    }
    1.55 +
    1.56 +    @Override
    1.57 +    public long skip(long byteCount) {
    1.58 +        if (byteCount < 0 || mNativeRef.isReleased()) {
    1.59 +            return 0;
    1.60 +        }
    1.61 +
    1.62 +        byteCount = Math.min(byteCount, mBuf.remaining());
    1.63 +        mBuf.position(mBuf.position() + (int)byteCount);
    1.64 +        return byteCount;
    1.65 +    }
    1.66 +
    1.67 +}