141 lines
3.0 KiB
C++
141 lines
3.0 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 <regex>
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#include <string>
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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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* ChecklistParser
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*
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* @class
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*/
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class ChecklistParser : 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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ChecklistParser(
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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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, isStarted(false)
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, isFinished(false)
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{}
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/**
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* IsStartingLine
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*
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* An unordered list starts with `* `.
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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("^- \\[[x| ]\\] .*");
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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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* @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 this->isFinished;
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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 true;
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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 true;
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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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bool isStartOfNewListItem = IsStartingLine(line);
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uint32_t indentation = getIndentationWidth(line);
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static std::regex lineRegex("^(- )");
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line = std::regex_replace(line, lineRegex, "");
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static std::regex emptyBoxRegex("^\\[ \\]");
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static std::string emptyBoxReplacement = "<input type=\"checkbox\"/>";
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line = std::regex_replace(line, emptyBoxRegex, emptyBoxReplacement);
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static std::regex boxRegex("^\\[x\\]");
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static std::string boxReplacement = "<input type=\"checkbox\" checked=\"checked\"/>";
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line = std::regex_replace(line, boxRegex, boxReplacement);
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if (!this->isStarted)
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{
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line = "<ul class=\"checklist\"><li><label>" + line;
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this->isStarted = true;
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return;
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}
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if (indentation >= 2)
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{
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line = line.substr(2);
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return;
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}
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if (
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line.empty() ||
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line.find("</label></li><li><label>") != std::string::npos ||
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line.find("</label></li></ul>") != std::string::npos
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)
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{
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line = "</label></li></ul>" + line;
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this->isFinished = true;
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return;
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}
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if (isStartOfNewListItem)
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{
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line = "</label></li><li><label>" + line;
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}
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}
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private:
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bool isStarted;
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bool isFinished;
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}; // class ChecklistParser
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// -----------------------------------------------------------------------------
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} // namespace maddy
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