/* * Copyright (C) 1999-2009 Lorenzo Bettini, http://www.lorenzobettini.it * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef _CHARTRANSLATOR_H #define _CHARTRANSLATOR_H #define NUM_OF_CHARS 256 #include #include #include "preformatter.h" namespace srchilite { /** * Translates specific character sequences into corresponding ones; * it can also use regular expression for the characters to be translated. * This is useful for translating some characters in the input which * are special characters in the output formats, e.g., & in LaTeX, or * < in HTML. */ class CharTranslator: public PreFormatter { protected: /// keeps track of the translation patterns added unsigned int counter; /// the translation regular expression (for buffering) std::string translation_exp; /// the corresponding translated regular expression (for buffering) std::string translation_format; /// the actual regular expression boost::regex *reg_exp; /// whether we are at the beginning of a new line bool bol; /** * The actual preformatting (char translation) * @param text what to translate * @return the translated string */ virtual const std::string doPreformat(const std::string &text); public: /** * @param f the decorated preformatter */ CharTranslator(PreFormatterPtr f = PreFormatterPtr()); virtual ~CharTranslator(); /** * Adds a translation pair * @param s1 what to translate * @param s2 the translated expression */ void set_translation(const std::string &s1, const std::string &s2); /** * returns a string representation: what we translate * and into what we translate */ const std::string toString() const { return translation_exp + " -> " + translation_format; } }; typedef std::shared_ptr CharTranslatorPtr; } #endif // _CHARTRANSLATOR_H