labs-edaf30/lab4/TagRemover.cc

#include <iostream>
#include <regex>
#include <string>

class TagRemover {
private:
    std::string content;

public: 
    TagRemover(std::istream& input) {
        std::string line;
        while (std::getline(input, line)) {
            content += line + '\n';
        }
    }

    void print(std::ostream& output) const {
        std::string result = std::regex_replace(content, std::regex("<[^>]*>"), "");
        result = std::regex_replace(result, std::regex("&lt;"), "<");
        result = std::regex_replace(result, std::regex("&gt;"), ">");
        result = std::regex_replace(result, std::regex("&nbsp;"), " ");
        result = std::regex_replace(result, std::regex("&amp;"), "&");

        output << result;
    }
};

int main() {
    TagRemover tr(std::cin);
    tr.print(std::cout);
    return 0;
}