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/*
* Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.webkit;
public final class SharedBuffer {
private long nativePointer;
SharedBuffer() {
this.nativePointer = twkCreate();
}
private SharedBuffer(long nativePointer) {
if (nativePointer == 0) {
throw new IllegalArgumentException("nativePointer is 0");
}
this.nativePointer = nativePointer;
}
private static SharedBuffer fwkCreate(long nativePointer) {
return new SharedBuffer(nativePointer);
}
long size() {
if (nativePointer == 0) {
throw new IllegalStateException("nativePointer is 0");
}
return twkSize(nativePointer);
}
int getSomeData(long position, byte[] buffer, int offset, int length) {
if (nativePointer == 0) {
throw new IllegalStateException("nativePointer is 0");
}
if (position < 0) {
throw new IndexOutOfBoundsException("position is negative");
}
if (position > size()) {
throw new IndexOutOfBoundsException(
"position is greater than size");
}
if (buffer == null) {
throw new NullPointerException("buffer is null");
}
if (offset < 0) {
throw new IndexOutOfBoundsException("offset is negative");
}
if (length < 0) {
throw new IndexOutOfBoundsException("length is negative");
}
if (length > buffer.length - offset) {
throw new IndexOutOfBoundsException(
"length is greater than buffer.length - offset");
}
return twkGetSomeData(nativePointer, position, buffer, offset, length);
}
void append(byte[] buffer, int offset, int length) {
if (nativePointer == 0) {
throw new IllegalStateException("nativePointer is 0");
}
if (buffer == null) {
throw new NullPointerException("buffer is null");
}
if (offset < 0) {
throw new IndexOutOfBoundsException("offset is negative");
}
if (length < 0) {
throw new IndexOutOfBoundsException("length is negative");
}
if (length > buffer.length - offset) {
throw new IndexOutOfBoundsException(
"length is greater than buffer.length - offset");
}
twkAppend(nativePointer, buffer, offset, length);
}
void dispose() {
if (nativePointer == 0) {
throw new IllegalStateException("nativePointer is 0");
}
twkDispose(nativePointer);
nativePointer = 0;
}
private static native long twkCreate();
private static native long twkSize(long nativePointer);
private static native int twkGetSomeData(long nativePointer,
long position,
byte[] buffer,
int offset,
int length);
private static native void twkAppend(long nativePointer,
byte[] buffer,
int offset,
int length);
private static native void twkDispose(long nativePointer);
}