зеркало из https://github.com/mozilla/gecko-dev.git
99 строки
3.4 KiB
C++
99 строки
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef nsIUnicharInputStream_h___
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#define nsIUnicharInputStream_h___
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#include "nsIInputStream.h"
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class nsString;
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#define NS_IUNICHAR_INPUT_STREAM_IID \
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{ 0x2d97fbf0, 0x93b5, 0x11d1, \
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{0x89, 0x5b, 0x00, 0x60, 0x08, 0x91, 0x1b, 0x81} }
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#define NS_IB2UCONVERTER_IID \
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{ 0x35e40290, 0x93b5, 0x11d1, \
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{0x89, 0x5b, 0x00, 0x60, 0x08, 0x91, 0x1b, 0x81} }
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/// Enumeration of character set ids.
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enum nsCharSetID {
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eCharSetID_IsoLatin1 = 0,
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eCharSetID_UTF8,
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eCharSetID_ShiftJis
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// XXX more i'm sure...
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};
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/** Abstract unicode character input stream
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* @see nsIInputStream
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*/
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class nsIUnicharInputStream : public nsISupports {
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public:
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NS_IMETHOD Read(PRUnichar* aBuf,
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PRInt32 aOffset,
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PRInt32 aCount,
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PRInt32 *aReadCount) = 0;
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NS_IMETHOD Close() = 0;
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};
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/**
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* Create a nsIUnicharInputStream that wraps up a string. Data is fed
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* from the string out until the done. When this object is destroyed
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* it destroyes the string (so make a copy if you don't want it doing
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* that)
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*/
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extern NS_BASE nsresult
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NS_NewStringUnicharInputStream(nsIUnicharInputStream** aInstancePtrResult,
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nsString* aString);
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/// Abstract interface for converting from bytes to unicode characters
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class nsIB2UConverter : public nsISupports {
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public:
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/** aDstLen is updated to indicate how much data was translated into
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* aDst; aSrcLen is updated to indicate how much data was used in
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* the source buffer.
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*/
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virtual PRInt32 Convert(PRUnichar* aDst,
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PRInt32 aDstOffset,
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PRInt32& aDstLen,
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const char* aSrc,
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PRInt32 aSrcOffset,
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PRInt32& aSrcLen) = 0;
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};
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/** Create a new nsUnicharInputStream that provides a converter for the
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* byte input stream aStreamToWrap. If no converter can be found then
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* nsnull is returned and the error code is set to
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* NS_INPUTSTREAM_NO_CONVERTER.
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*/
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extern NS_BASE nsresult
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NS_NewConverterStream(nsIUnicharInputStream** aInstancePtrResult,
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nsISupports* aOuter,
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nsIInputStream* aStreamToWrap,
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PRInt32 aBufferSize = 0,
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nsCharSetID aCharSet = eCharSetID_IsoLatin1);
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/** Create a new nsB2UConverter for the given character set. When given
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* nsnull, the converter for iso-latin1 to unicode is provided. If no
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* converter can be found, nsnull is returned.
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*/
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extern NS_BASE nsresult
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NS_NewB2UConverter(nsIB2UConverter** aInstancePtrResult,
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nsISupports* aOuter,
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nsCharSetID aCharSet = eCharSetID_IsoLatin1);
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#endif /* nsUnicharInputStream_h___ */
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