| /******************************************************************************* |
| * Copyright (c) 2003, 2007 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.browser; |
| |
| import org.eclipse.swt.internal.C; |
| import org.eclipse.swt.internal.mozilla.*; |
| |
| class InputStream { |
| XPCOMObject inputStream; |
| int refCount = 0; |
| |
| byte[] buffer; |
| int index = 0; |
| |
| InputStream (byte[] buffer) { |
| this.buffer = buffer; |
| index = 0; |
| createCOMInterfaces (); |
| } |
| |
| int AddRef () { |
| refCount++; |
| return refCount; |
| } |
| |
| void createCOMInterfaces () { |
| /* Create each of the interfaces that this object implements */ |
| inputStream = new XPCOMObject (new int[] {2, 0, 0, 0, 1, 3, 4, 1}) { |
| public int /*long*/ method0 (int /*long*/[] args) {return QueryInterface (args[0], args[1]);} |
| public int /*long*/ method1 (int /*long*/[] args) {return AddRef ();} |
| public int /*long*/ method2 (int /*long*/[] args) {return Release ();} |
| public int /*long*/ method3 (int /*long*/[] args) {return Close ();} |
| public int /*long*/ method4 (int /*long*/[] args) {return Available (args[0]);} |
| public int /*long*/ method5 (int /*long*/[] args) {return Read (args[0], (int)/*64*/args[1], args[2]);} |
| public int /*long*/ method6 (int /*long*/[] args) {return ReadSegments (args[0], args[1], (int)/*64*/args[2], args[3]);} |
| public int /*long*/ method7 (int /*long*/[] args) {return IsNonBlocking (args[0]);} |
| }; |
| } |
| |
| void disposeCOMInterfaces () { |
| if (inputStream != null) { |
| inputStream.dispose (); |
| inputStream = null; |
| } |
| } |
| |
| int /*long*/ getAddress () { |
| return inputStream.getAddress (); |
| } |
| |
| int QueryInterface (int /*long*/ riid, int /*long*/ ppvObject) { |
| if (riid == 0 || ppvObject == 0) return XPCOM.NS_ERROR_NO_INTERFACE; |
| nsID guid = new nsID (); |
| XPCOM.memmove (guid, riid, nsID.sizeof); |
| |
| if (guid.Equals (nsISupports.NS_ISUPPORTS_IID)) { |
| XPCOM.memmove (ppvObject, new int /*long*/[] {inputStream.getAddress ()}, C.PTR_SIZEOF); |
| AddRef (); |
| return XPCOM.NS_OK; |
| } |
| if (guid.Equals (nsIInputStream.NS_IINPUTSTREAM_IID)) { |
| XPCOM.memmove (ppvObject, new int /*long*/[] {inputStream.getAddress ()}, C.PTR_SIZEOF); |
| AddRef (); |
| return XPCOM.NS_OK; |
| } |
| XPCOM.memmove (ppvObject, new int /*long*/[] {0}, C.PTR_SIZEOF); |
| return XPCOM.NS_ERROR_NO_INTERFACE; |
| } |
| |
| int Release () { |
| refCount--; |
| if (refCount == 0) disposeCOMInterfaces (); |
| return refCount; |
| } |
| |
| /* nsIInputStream implementation */ |
| |
| int Close () { |
| buffer = null; |
| index = 0; |
| return XPCOM.NS_OK; |
| } |
| |
| int Available (int /*long*/ _retval) { |
| int available = buffer == null ? 0 : buffer.length - index; |
| XPCOM.memmove (_retval, new int[] {available}, 4); |
| return XPCOM.NS_OK; |
| } |
| |
| int Read(int /*long*/ aBuf, int aCount, int /*long*/ _retval) { |
| int max = Math.min (aCount, buffer == null ? 0 : buffer.length - index); |
| if (max > 0) { |
| byte[] src = new byte[max]; |
| System.arraycopy (buffer, index, src, 0, max); |
| XPCOM.memmove (aBuf, src, max); |
| index += max; |
| } |
| XPCOM.memmove(_retval, new int[] {max}, 4); |
| return XPCOM.NS_OK; |
| } |
| |
| int ReadSegments (int /*long*/ aWriter, int /*long*/ aClosure, int aCount, int /*long*/ _retval) { |
| int max = buffer == null ? 0 : buffer.length - index; |
| if (aCount != -1) { |
| max = Math.min (max, aCount); |
| } |
| int cnt = max; |
| while (cnt > 0) { |
| int[] aWriteCount = new int[1]; |
| int /*long*/ rc = XPCOM.Call (aWriter, getAddress (), aClosure, buffer, index, cnt, aWriteCount); |
| if (rc != XPCOM.NS_OK) break; |
| index += aWriteCount[0]; |
| cnt -= aWriteCount[0]; |
| } |
| XPCOM.memmove (_retval, new int[] {max - cnt}, 4); |
| return XPCOM.NS_OK; |
| } |
| |
| int IsNonBlocking (int /*long*/ _retval) { |
| /* blocking */ |
| XPCOM.memmove (_retval, new int[] {0}, 4); |
| return XPCOM.NS_OK; |
| } |
| } |