/******************************************************************************* * Copyright (c) 2003, 2013 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 long /*int*/ method0 (long /*int*/[] args) {return QueryInterface (args[0], args[1]);} public long /*int*/ method1 (long /*int*/[] args) {return AddRef ();} public long /*int*/ method2 (long /*int*/[] args) {return Release ();} public long /*int*/ method3 (long /*int*/[] args) {return Close ();} public long /*int*/ method4 (long /*int*/[] args) {return Available (args[0]);} public long /*int*/ method5 (long /*int*/[] args) {return Read (args[0], (int)/*64*/args[1], args[2]);} public long /*int*/ method6 (long /*int*/[] args) {return ReadSegments (args[0], args[1], (int)/*64*/args[2], args[3]);} public long /*int*/ method7 (long /*int*/[] args) {return IsNonBlocking (args[0]);} }; } void disposeCOMInterfaces () { if (inputStream != null) { inputStream.dispose (); inputStream = null; } } long /*int*/ getAddress () { return inputStream.getAddress (); } int QueryInterface (long /*int*/ riid, long /*int*/ 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 long /*int*/[] {inputStream.getAddress ()}, C.PTR_SIZEOF); AddRef (); return XPCOM.NS_OK; } if (guid.Equals (nsIInputStream.NS_IINPUTSTREAM_IID) || guid.Equals (nsIInputStream.NS_IINPUTSTREAM_17_IID)) { XPCOM.memmove (ppvObject, new long /*int*/[] {inputStream.getAddress ()}, C.PTR_SIZEOF); AddRef (); return XPCOM.NS_OK; } XPCOM.memmove (ppvObject, new long /*int*/[] {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 (long /*int*/ _retval) { int available = buffer == null ? 0 : buffer.length - index; XPCOM.memmove (_retval, new int[] {available}, 4); return XPCOM.NS_OK; } int Read(long /*int*/ aBuf, int aCount, long /*int*/ _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 (long /*int*/ aWriter, long /*int*/ aClosure, int aCount, long /*int*/ _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]; long /*int*/ 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 (long /*int*/ _retval) { /* blocking */ XPCOM.memmove (_retval, new boolean[] {false}); return XPCOM.NS_OK; } }