rcpp_framework/libs/maddy/htmlparser.h

128 lines
2.4 KiB
C++

/*
* This project is licensed under the MIT license. For more information see the
* LICENSE file.
*/
#pragma once
// -----------------------------------------------------------------------------
#include <functional>
#include <string>
#include "maddy/blockparser.h"
// -----------------------------------------------------------------------------
namespace maddy {
// -----------------------------------------------------------------------------
/**
* HtmlParser
*
* @class
*/
class HtmlParser : public BlockParser
{
public:
/**
* ctor
*
* @method
* @param {std::function<void(std::string&)>} parseLineCallback
* @param {std::function<std::shared_ptr<BlockParser>(const std::string& line)>} getBlockParserForLineCallback
*/
HtmlParser(
std::function<void(std::string&)> parseLineCallback,
std::function<std::shared_ptr<BlockParser>(const std::string& line)> getBlockParserForLineCallback
)
: BlockParser(parseLineCallback, getBlockParserForLineCallback)
, isStarted(false)
, isFinished(false)
, isGreaterThanFound(false)
{}
/**
* IsStartingLine
*
* If the line is starting with `<`, HTML is expected to follow.
* Nothing after that will be parsed, it only is copied.
*
* @method
* @param {const std::string&} line
* @return {bool}
*/
static bool
IsStartingLine(const std::string& line)
{
return line[0] == '<';
}
/**
* IsFinished
*
* `>` followed by an empty line will end the HTML block.
*
* @method
* @return {bool}
*/
bool
IsFinished() const override
{
return this->isFinished;
}
protected:
bool
isInlineBlockAllowed() const override
{
return false;
}
bool
isLineParserAllowed() const override
{
return false;
}
void
parseBlock(std::string& line) override
{
if (!this->isStarted)
{
this->isStarted = true;
}
if (!line.empty() && line[line.size() - 1] == '>')
{
this->isGreaterThanFound = true;
return;
}
if (line.empty() && this->isGreaterThanFound)
{
this->isFinished = true;
return;
}
if (!line.empty() && this->isGreaterThanFound)
{
this->isGreaterThanFound = false;
}
if (!line.empty())
{
line += " ";
}
}
private:
bool isStarted;
bool isFinished;
bool isGreaterThanFound;
}; // class HtmlParser
// -----------------------------------------------------------------------------
} // namespace maddy