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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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 the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsIUnicharInputStream_h___
#define nsIUnicharInputStream_h___
#include "nsIInputStream.h"
#include "nsString.h"
#include "nscore.h"
class nsIUnicharInputStream;
typedef NS_CALLBACK(nsWriteUnicharSegmentFun)(nsIUnicharInputStream *aInStream,
void *aClosure,
const PRUnichar *aFromSegment,
PRUint32 aToOffset,
PRUint32 aCount,
PRUint32 *aWriteCount);
/* c4bcf6ee-3a79-4d77-8d48-f17be3199b3b */
#define NS_IUNICHAR_INPUT_STREAM_IID \
{ 0xc4bcf6ee, 0x3a79, 0x4d77, \
{0x8d, 0x48, 0xf1, 0x7b, 0xe3, 0x19, 0x9b, 0x3b} }
/** Abstract unicode character input stream
* @see nsIInputStream
*/
class NS_NO_VTABLE nsIUnicharInputStream : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IUNICHAR_INPUT_STREAM_IID)
NS_IMETHOD Read(PRUnichar* aBuf,
PRUint32 aCount,
PRUint32 *aReadCount) = 0;
NS_IMETHOD Close() = 0;
NS_IMETHOD ReadSegments(nsWriteUnicharSegmentFun aWriter,
void* aClosure,
PRUint32 aCount,
PRUint32 *aReadCount) = 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_NewUTF8ConverterStream(nsIUnicharInputStream** aInstancePtrResult,
nsIInputStream* aStreamToWrap,
PRInt32 aBufferSize = 0);
#endif /* nsUnicharInputStream_h___ */
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