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00001 /******************************************************************************** 00002 * * 00003 * U n i c o d e T e x t C o d e c * 00004 * * 00005 ********************************************************************************* 00006 * Copyright (C) 2002 by Lyle Johnson. All Rights Reserved. * 00007 ********************************************************************************* 00008 * This library is free software; you can redistribute it and/or * 00009 * modify it under the terms of the GNU Lesser General Public * 00010 * License as published by the Free Software Foundation; either * 00011 * version 2.1 of the License, or (at your option) any later version. * 00012 * * 00013 * This library is distributed in the hope that it will be useful, * 00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * 00016 * Lesser General Public License for more details. * 00017 * * 00018 * You should have received a copy of the GNU Lesser General Public * 00019 * License along with this library; if not, write to the Free Software * 00020 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. * 00021 ********************************************************************************* 00022 * $Id: FXTextCodec.h,v 1.4 2002/09/24 22:49:37 fox Exp $ * 00023 ********************************************************************************/ 00024 #ifndef FXTEXTCODEC_H 00025 #define FXTEXTCODEC_H 00026 00027 00028 ////////////////////////////// UNDER DEVELOPMENT ////////////////////////////// 00029 00030 00031 namespace FX { 00032 00033 /** 00034 * Abstract base class for a stateless coder/decoder. 00035 */ 00036 class FXTextCodec { 00037 protected: 00038 FXTextCodec(){} 00039 public: 00040 00041 /** 00042 * Convert a sequence of wide characters from Unicode to the specified 00043 * 8-bit encoding. Reads at most n wide characters from src and writes 00044 * at most m bytes into dest. Returns the number of characters actually 00045 * written into dest. 00046 * 00047 * On exit, the src and dest pointers are updated to point to the next 00048 * available character (or byte) for reading (writing). 00049 */ 00050 virtual unsigned long fromUnicode(FXuchar*& dest,unsigned long m,const FXwchar*& src,unsigned long n) = 0; 00051 00052 /** 00053 * Convert a sequence of bytes in some 8-bit encoding to a sequence 00054 * of wide characters (Unicode). Reads at most n bytes from src and 00055 * writes at most m characters into dest. Returns the number of characters 00056 * actually read from src. 00057 * 00058 * On exit, the src and dest pointers are updated to point to the next 00059 * available byte (or character) for writing (reading). 00060 */ 00061 virtual unsigned long toUnicode(FXwchar*& dest,unsigned long m,const FXuchar*& src,unsigned long n) = 0; 00062 00063 /** 00064 * Return the IANA mime name for this codec; this is used for example 00065 * as "text/utf-8" in drag and drop protocols. 00066 */ 00067 virtual const FXchar* mimeName() const = 0; 00068 00069 /** 00070 * Return the Management Information Base (MIBenum) for the character set. 00071 */ 00072 virtual FXint mibEnum() const = 0; 00073 00074 /// Destructor 00075 virtual ~FXTextCodec(){} 00076 }; 00077 00078 } 00079 00080 #endif