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/*
* This project is licensed under the MIT license. For more information see the
* LICENSE file.
*/
#pragma once
// -----------------------------------------------------------------------------
#include <functional>
#include <string>
#include <regex>
#include "maddy/blockparser.h"
// -----------------------------------------------------------------------------
namespace maddy {
// -----------------------------------------------------------------------------
/**
* HorizontalLineParser
*
* From Markdown: `---`
*
* To HTML: `<hr/>`
*
* @class
*/
class HorizontalLineParser : public BlockParser
{
public:
/**
* ctor
*
* @method
* @param {std::function<void(std::string&)>} parseLineCallback
* @param {std::function<std::shared_ptr<BlockParser>(const std::string& line)>} getBlockParserForLineCallback
*/
HorizontalLineParser(
std::function<void(std::string&)> parseLineCallback,
std::function<std::shared_ptr<BlockParser>(const std::string& line)> getBlockParserForLineCallback
)
: BlockParser(parseLineCallback, getBlockParserForLineCallback)
, lineRegex("^---$")
{}
/**
* IsStartingLine
*
* If the line has exact three dashes `---`, then it is a horizontal line.
*
* @method
* @param {const std::string&} line
* @return {bool}
*/
static bool
IsStartingLine(const std::string& line)
{
static std::regex re("^---$");
return std::regex_match(line, re);
}
/**
* IsFinished
*
* The horizontal line is always only one line long, so this method always
* returns true.
*
* @method
* @return {bool}
*/
bool
IsFinished() const override
{
return true;
}
protected:
bool
isInlineBlockAllowed() const override
{
return false;
}
bool
isLineParserAllowed() const override
{
return false;
}
void
parseBlock(std::string& line) override
{
static std::string replacement = "<hr/>";
line = std::regex_replace(line, lineRegex, replacement);
}
private:
std::regex lineRegex;
}; // class HorizontalLineParser
// -----------------------------------------------------------------------------
} // namespace maddy
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