The Tor Browser / file comparison
comparison: mobile/android/base/mozglue/ByteBufferInputStream.java
mobile/android/base/mozglue/ByteBufferInputStream.java
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:7f54ee6a0b91 |
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| 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/. */ | |
| 5 | |
| 6 package org.mozilla.gecko.mozglue; | |
| 7 | |
| 8 import java.io.InputStream; | |
| 9 import java.nio.ByteBuffer; | |
| 10 | |
| 11 class ByteBufferInputStream extends InputStream { | |
| 12 | |
| 13 protected ByteBuffer mBuf; | |
| 14 // Reference to a native object holding the data backing the ByteBuffer. | |
| 15 private NativeReference mNativeRef; | |
| 16 | |
| 17 protected ByteBufferInputStream(ByteBuffer buffer, NativeReference ref) { | |
| 18 mBuf = buffer; | |
| 19 mNativeRef = ref; | |
| 20 } | |
| 21 | |
| 22 @Override | |
| 23 public int available() { | |
| 24 return mBuf.remaining(); | |
| 25 } | |
| 26 | |
| 27 @Override | |
| 28 public void close() { | |
| 29 mBuf = null; | |
| 30 mNativeRef.release(); | |
| 31 } | |
| 32 | |
| 33 @Override | |
| 34 public int read() { | |
| 35 if (!mBuf.hasRemaining() || mNativeRef.isReleased()) { | |
| 36 return -1; | |
| 37 } | |
| 38 | |
| 39 return mBuf.get() & 0xff; // Avoid sign extension | |
| 40 } | |
| 41 | |
| 42 @Override | |
| 43 public int read(byte[] buffer, int offset, int length) { | |
| 44 if (!mBuf.hasRemaining() || mNativeRef.isReleased()) { | |
| 45 return -1; | |
| 46 } | |
| 47 | |
| 48 length = Math.min(length, mBuf.remaining()); | |
| 49 mBuf.get(buffer, offset, length); | |
| 50 return length; | |
| 51 } | |
| 52 | |
| 53 @Override | |
| 54 public long skip(long byteCount) { | |
| 55 if (byteCount < 0 || mNativeRef.isReleased()) { | |
| 56 return 0; | |
| 57 } | |
| 58 | |
| 59 byteCount = Math.min(byteCount, mBuf.remaining()); | |
| 60 mBuf.position(mBuf.position() + (int)byteCount); | |
| 61 return byteCount; | |
| 62 } | |
| 63 | |
| 64 } |
