The Tor Browser: mobile/android/base/mozglue/ByteBufferInputStream.java@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil; -*-

     2  * This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 package org.mozilla.gecko.mozglue;

     8 import java.io.InputStream;

     9 import java.nio.ByteBuffer;

    11 class ByteBufferInputStream extends InputStream {

    13     protected ByteBuffer mBuf;

    14     // Reference to a native object holding the data backing the ByteBuffer.

    15     private NativeReference mNativeRef;

    17     protected ByteBufferInputStream(ByteBuffer buffer, NativeReference ref) {

    18         mBuf = buffer;

    19         mNativeRef = ref;

    20     }

    22     @Override

    23     public int available() {

    24         return mBuf.remaining();

    25     }

    27     @Override

    28     public void close() {

    29         mBuf = null;

    30         mNativeRef.release();

    31     }

    33     @Override

    34     public int read() {

    35         if (!mBuf.hasRemaining() || mNativeRef.isReleased()) {

    36             return -1;

    37         }

    39         return mBuf.get() & 0xff; // Avoid sign extension

    40     }

    42     @Override

    43     public int read(byte[] buffer, int offset, int length) {

    44         if (!mBuf.hasRemaining() || mNativeRef.isReleased()) {

    45             return -1;

    46         }

    48         length = Math.min(length, mBuf.remaining());

    49         mBuf.get(buffer, offset, length);

    50         return length;

    51     }

    53     @Override

    54     public long skip(long byteCount) {

    55         if (byteCount < 0 || mNativeRef.isReleased()) {

    56             return 0;

    57         }

    59         byteCount = Math.min(byteCount, mBuf.remaining());

    60         mBuf.position(mBuf.position() + (int)byteCount);

    61         return byteCount;

    62     }

    64 }

The Tor Browser / file revision