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/*******************************************************************************
* Copyright (c) 2003, 2012 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)) {
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;
}
}
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