ferencd@0: /*
ferencd@0:  * This project is licensed under the MIT license. For more information see the
ferencd@0:  * LICENSE file.
ferencd@0:  */
ferencd@0: #pragma once
ferencd@0: 
ferencd@0: // -----------------------------------------------------------------------------
ferencd@0: 
ferencd@0: #include <functional>
ferencd@0: #include <regex>
ferencd@0: #include <string>
ferencd@0: 
ferencd@0: #include "maddy/blockparser.h"
ferencd@0: 
ferencd@0: // -----------------------------------------------------------------------------
ferencd@0: 
ferencd@0: namespace maddy {
ferencd@0: 
ferencd@0: // -----------------------------------------------------------------------------
ferencd@0: 
ferencd@0: /**
ferencd@0:  * ChecklistParser
ferencd@0:  *
ferencd@0:  * @class
ferencd@0:  */
ferencd@0: class ChecklistParser : public BlockParser
ferencd@0: {
ferencd@0: public:
ferencd@0:   /**
ferencd@0:    * ctor
ferencd@0:    *
ferencd@0:    * @method
ferencd@0:    * @param {std::function<void(std::string&)>} parseLineCallback
ferencd@0:    * @param {std::function<std::shared_ptr<BlockParser>(const std::string& line)>} getBlockParserForLineCallback
ferencd@0:    */
ferencd@0:    ChecklistParser(
ferencd@0:     std::function<void(std::string&)> parseLineCallback,
ferencd@0:     std::function<std::shared_ptr<BlockParser>(const std::string& line)> getBlockParserForLineCallback
ferencd@0:   )
ferencd@0:     : BlockParser(parseLineCallback, getBlockParserForLineCallback)
ferencd@0:     , isStarted(false)
ferencd@0:     , isFinished(false)
ferencd@0:   {}
ferencd@0: 
ferencd@0:   /**
ferencd@0:    * IsStartingLine
ferencd@0:    *
ferencd@0:    * An unordered list starts with `* `.
ferencd@0:    *
ferencd@0:    * @method
ferencd@0:    * @param {const std::string&} line
ferencd@0:    * @return {bool}
ferencd@0:    */
ferencd@0:   static bool
ferencd@0:   IsStartingLine(const std::string& line)
ferencd@0:   {
ferencd@0:     static std::regex re("^- \\[[x| ]\\] .*");
ferencd@0:     return std::regex_match(line, re);
ferencd@0:   }
ferencd@0: 
ferencd@0:   /**
ferencd@0:    * IsFinished
ferencd@0:    *
ferencd@0:    * @method
ferencd@0:    * @return {bool}
ferencd@0:    */
ferencd@0:   bool
ferencd@0:   IsFinished() const override
ferencd@0:   {
ferencd@0:     return this->isFinished;
ferencd@0:   }
ferencd@0: 
ferencd@0: protected:
ferencd@0:   bool
ferencd@0:   isInlineBlockAllowed() const override
ferencd@0:   {
ferencd@0:     return true;
ferencd@0:   }
ferencd@0: 
ferencd@0:   bool
ferencd@0:   isLineParserAllowed() const override
ferencd@0:   {
ferencd@0:     return true;
ferencd@0:   }
ferencd@0: 
ferencd@0:   void
ferencd@0:   parseBlock(std::string& line) override
ferencd@0:   {
ferencd@0:     bool isStartOfNewListItem = IsStartingLine(line);
ferencd@0:     uint32_t indentation = getIndentationWidth(line);
ferencd@0: 
ferencd@0:     static std::regex lineRegex("^(- )");
ferencd@0:     line = std::regex_replace(line, lineRegex, "");
ferencd@0: 
ferencd@0:     static std::regex emptyBoxRegex("^\\[ \\]");
ferencd@0:     static std::string emptyBoxReplacement = "<input type=\"checkbox\"/>";
ferencd@0:     line = std::regex_replace(line, emptyBoxRegex, emptyBoxReplacement);
ferencd@0: 
ferencd@0:     static std::regex boxRegex("^\\[x\\]");
ferencd@0:     static std::string boxReplacement = "<input type=\"checkbox\" checked=\"checked\"/>";
ferencd@0:     line = std::regex_replace(line, boxRegex, boxReplacement);
ferencd@0: 
ferencd@0:     if (!this->isStarted)
ferencd@0:     {
ferencd@0:       line = "<ul class=\"checklist\"><li><label>" + line;
ferencd@0:       this->isStarted = true;
ferencd@0:       return;
ferencd@0:     }
ferencd@0: 
ferencd@0:     if (indentation >= 2)
ferencd@0:     {
ferencd@0:       line = line.substr(2);
ferencd@0:       return;
ferencd@0:     }
ferencd@0: 
ferencd@0:     if (
ferencd@0:       line.empty() ||
ferencd@0:       line.find("</label></li><li><label>") != std::string::npos ||
ferencd@0:       line.find("</label></li></ul>") != std::string::npos
ferencd@0:     )
ferencd@0:     {
ferencd@0:       line = "</label></li></ul>" + line;
ferencd@0:       this->isFinished = true;
ferencd@0:       return;
ferencd@0:     }
ferencd@0: 
ferencd@0:     if (isStartOfNewListItem)
ferencd@0:     {
ferencd@0:       line = "</label></li><li><label>" + line;
ferencd@0:     }
ferencd@0:   }
ferencd@0: 
ferencd@0: private:
ferencd@0:   bool isStarted;
ferencd@0:   bool isFinished;
ferencd@0: }; // class ChecklistParser
ferencd@0: 
ferencd@0: // -----------------------------------------------------------------------------
ferencd@0: 
ferencd@0: } // namespace maddy