pjs/xpcom/io/nsIUnicharInputStream.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsIUnicharInputStream_h___
#define nsIUnicharInputStream_h___
#include "nsIInputStream.h"
#include "nscore.h"
class nsString;
#define NS_IUNICHAR_INPUT_STREAM_IID \
{ 0x2d97fbf0, 0x93b5, 0x11d1, \
{0x89, 0x5b, 0x00, 0x60, 0x08, 0x91, 0x1b, 0x81} }
/** Abstract unicode character input stream
* @see nsIInputStream
*/
class nsIUnicharInputStream : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IUNICHAR_INPUT_STREAM_IID)
NS_IMETHOD Read(PRUnichar* aBuf,
PRUint32 aOffset,
PRUint32 aCount,
PRUint32 *aReadCount) = 0;
NS_IMETHOD Close() = 0;
};
/**
* Create a nsIUnicharInputStream that wraps up a string. Data is fed
* from the string out until the done. When this object is destroyed
* it destroyes the string (so make a copy if you don't want it doing
* that)
*/
extern NS_COM nsresult
NS_NewStringUnicharInputStream(nsIUnicharInputStream** aInstancePtrResult,
nsString* aString);
/** Create a new nsUnicharInputStream that provides a converter for the
* byte input stream aStreamToWrap. If no converter can be found then
* nsnull is returned and the error code is set to
* NS_INPUTSTREAM_NO_CONVERTER.
*/
extern NS_COM nsresult
NS_NewConverterStream(nsIUnicharInputStream** aInstancePtrResult,
nsISupports* aOuter,
nsIInputStream* aStreamToWrap,
PRInt32 aBufferSize = 0,
nsString* aCharSet = nsnull);
#endif /* nsUnicharInputStream_h___ */