peilaus alkaen
https://github.com/quitesimpleorg/qsmaddy.git
synced 2024-12-23 03:39:50 +01:00
139 rivejä
2.8 KiB
C++
139 rivejä
2.8 KiB
C++
/*
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* This project is licensed under the MIT license. For more information see the
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* LICENSE file.
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*/
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#pragma once
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// -----------------------------------------------------------------------------
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#include <functional>
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#include <string>
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#include <regex>
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#include "maddy/blockparser.h"
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// -----------------------------------------------------------------------------
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namespace maddy {
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// -----------------------------------------------------------------------------
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/**
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* HeadlineParser
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*
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* From Markdown:
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*
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* ```
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* # Headline 1
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* ## Headline 2
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* ### Headline 3
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* #### Headline 4
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* ##### Headline 5
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* ###### Headline 6
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* ```
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*
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* To HTML:
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*
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* ```
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* <h1>Headline 1</h1>
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* <h2>Headline 2</h2>
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* <h3>Headline 3</h3>
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* <h4>Headline 4</h4>
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* <h5>Headline 5</h5>
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* <h6>Headline 6</h6>
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* ```
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*
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* @class
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*/
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class HeadlineParser : public BlockParser
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{
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public:
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/**
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* ctor
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*
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* @method
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* @param {std::function<void(std::string&)>} parseLineCallback
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* @param {std::function<std::shared_ptr<BlockParser>(const std::string& line)>} getBlockParserForLineCallback
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*/
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HeadlineParser(
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std::function<void(std::string&)> parseLineCallback,
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std::function<std::shared_ptr<BlockParser>(const std::string& line)> getBlockParserForLineCallback
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)
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: BlockParser(parseLineCallback, getBlockParserForLineCallback)
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{}
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/**
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* IsStartingLine
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*
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* If the line starts with 1 - 6 `#`, then it is a headline.
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*
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* @method
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* @param {const std::string&} line
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* @return {bool}
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*/
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static bool
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IsStartingLine(const std::string& line)
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{
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static std::regex re("^(?:#){1,6} (.*)");
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return std::regex_match(line, re);
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}
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/**
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* IsFinished
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*
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* The headline is always only one line long, so this method always returns
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* true.
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*
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* @method
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* @return {bool}
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*/
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bool
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IsFinished() const override
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{
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return true;
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}
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protected:
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bool
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isInlineBlockAllowed() const override
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{
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return false;
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}
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bool
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isLineParserAllowed() const override
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{
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return false;
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}
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void
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parseBlock(std::string& line) override
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{
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static std::vector<std::regex> hlRegex = {
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std::regex("^# (.*)")
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, std::regex("^(?:#){2} (.*)")
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, std::regex("^(?:#){3} (.*)")
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, std::regex("^(?:#){4} (.*)")
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, std::regex("^(?:#){5} (.*)")
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, std::regex("^(?:#){6} (.*)")
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};
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static std::vector<std::string> hlReplacement = {
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"<h1>$1</h1>"
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, "<h2>$1</h2>"
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, "<h3>$1</h3>"
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, "<h4>$1</h4>"
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, "<h5>$1</h5>"
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, "<h6>$1</h6>"
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};
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for (uint8_t i = 0; i < 6; ++i)
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{
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line = std::regex_replace(line, hlRegex[i], hlReplacement[i]);
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}
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}
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}; // class HeadlineParser
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// -----------------------------------------------------------------------------
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} // namespace maddy
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