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:  * QuoteParser
ferencd@0:  *
ferencd@0:  * @class
ferencd@0:  */
ferencd@0: class QuoteParser : 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:    QuoteParser(
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:    * A quote 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("^\\>.*");
ferencd@0:     return std::regex_match(line, re);
ferencd@0:   }
ferencd@0: 
ferencd@0:   /**
ferencd@0:    * AddLine
ferencd@0:    *
ferencd@0:    * Adding a line which has to be parsed.
ferencd@0:    *
ferencd@0:    * @method
ferencd@0:    * @param {std::string&} line
ferencd@0:    * @return {void}
ferencd@0:    */
ferencd@0:   void
ferencd@0:   AddLine(std::string& line) override
ferencd@0:   {
ferencd@0:     if (!this->isStarted)
ferencd@0:     {
ferencd@0:       this->result << "<blockquote>";
ferencd@0:       this->isStarted = true;
ferencd@0:     }
ferencd@0: 
ferencd@0:     bool finish = false;
ferencd@0:     if (line.empty())
ferencd@0:     {
ferencd@0:       finish = true;
ferencd@0:     }
ferencd@0: 
ferencd@0:     this->parseBlock(line);
ferencd@0: 
ferencd@0:     if (this->isInlineBlockAllowed() && !this->childParser)
ferencd@0:     {
ferencd@0:       this->childParser = this->getBlockParserForLine(line);
ferencd@0:     }
ferencd@0: 
ferencd@0:     if (this->childParser)
ferencd@0:     {
ferencd@0:       this->childParser->AddLine(line);
ferencd@0: 
ferencd@0:       if (this->childParser->IsFinished())
ferencd@0:       {
ferencd@0:         this->result << this->childParser->GetResult().str();
ferencd@0:         this->childParser = nullptr;
ferencd@0:       }
ferencd@0: 
ferencd@0:       return;
ferencd@0:     }
ferencd@0: 
ferencd@0:     if (this->isLineParserAllowed())
ferencd@0:     {
ferencd@0:       this->parseLine(line);
ferencd@0:     }
ferencd@0: 
ferencd@0:     if (finish)
ferencd@0:     {
ferencd@0:       this->result << "</blockquote>";
ferencd@0:       this->isFinished = true;
ferencd@0:     }
ferencd@0: 
ferencd@0:     this->result << line;
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:     static std::regex lineRegexWithSpace("^\\> ");
ferencd@0:     line = std::regex_replace(line, lineRegexWithSpace, "");
ferencd@0:     static std::regex lineRegexWithoutSpace("^\\>");
ferencd@0:     line = std::regex_replace(line, lineRegexWithoutSpace, "");
ferencd@0: 
ferencd@0:     if (!line.empty())
ferencd@0:     {
ferencd@0:       line += " ";
ferencd@0:     }
ferencd@0:   }
ferencd@0: 
ferencd@0: private:
ferencd@0:   bool isStarted;
ferencd@0:   bool isFinished;
ferencd@0: }; // class QuoteParser
ferencd@0: 
ferencd@0: // -----------------------------------------------------------------------------
ferencd@0: 
ferencd@0: } // namespace maddy