textstyle.h

//
// C++ Interface: textstyle
//
// Description:
//
//
// Author: Lorenzo Bettini <http://www.lorenzobettini.it>, (C) 2005-2009
//
// Copyright: See COPYING file that comes with this distribution
//
//

#ifndef _TEXTSTYLE_H_
#define _TEXTSTYLE_H_

#include <string>
#include <vector>
#include <map>
#include <boost/regex.hpp>

namespace srchilite {

#define STYLE_VAR_TEXT "$style" // the text of the style variable
#define TEXT_VAR_TEXT "$text" // the text of the text variable
#define STYLE_VAR "\\" STYLE_VAR_TEXT // the name of the style variable as regexp
#define TEXT_VAR "\\" TEXT_VAR_TEXT // the name of the text variable as regexp
typedef std::map<std::string, std::string> SubstitutionMapping;

class TextStyle {
private:
    typedef std::vector<std::string> StringVector;
    typedef std::vector<int> IndexVector;
    typedef std::map<std::string, IndexVector> SubstitutionIndexes;

    boost::regex var_exp;

    std::string repr;

    StringVector parts;

    SubstitutionIndexes substitutions;

    bool invalid;

    void build_vectors();

public:
    TextStyle(const std::string &s = "", const char **vars = 0);
    ~TextStyle();

    std::string output(const std::string &text, const std::string &style = "");

    std::string output(SubstitutionMapping &subst_map);

    std::string subst_style(const std::string &style = "");

    const std::string &toString() const {
        return repr;
    }

    TextStyle compose(const TextStyle &inner);

    void update(const TextStyle &inner);

    void update(const std::string &inner);

    void update(const std::string &text, const std::string &style);

    bool containsStyleVar() const;

    bool empty() const;
};

}

#endif /*_TEXTSTYLE_H_*/