code_points.cpp

/*
** ETIB PROJECT, 2026
** utility
** File description:
** code_points
*/
 
#include <sstream>
#include <utility/graphic/text/code_points.hpp>
 
namespace utility::graphic
{
    CodePoints::CodePoints(const std::string &content)
    {
        parse(content);
    }
 
    void CodePoints::parse(const std::string &content)
    {
        std::istringstream stream(content);
        std::string line;
        while (std::getline(stream, line)) {
            size_t spacePos = line.find(' ');
            if (spacePos != std::string::npos) {
                std::string name = line.substr(0, spacePos);
                uint32_t code =
                    std::stoul(line.substr(spacePos + 1), &spacePos, 16);
                _codes[name] = code;
            }
        }
    }
 
    uint32_t CodePoints::getCode(const std::string &name) const
    {
        auto it = _codes.find(name);
        if (it != _codes.end()) {
            return it->second;
        }
        return 0;
    }
 
    std::string CodePoints::toUtf8(uint32_t codePoint)
    {
        std::string result;
        if (codePoint <= 0x7F) {
            result.push_back(static_cast<char>(codePoint));
        } else if (codePoint <= 0x7FF) {
            result.push_back(
                static_cast<char>(0xC0 | ((codePoint >> 6) & 0x1F)));
            result.push_back(static_cast<char>(0x80 | (codePoint & 0x3F)));
        } else if (codePoint <= 0xFFFF) {
            result.push_back(
                static_cast<char>(0xE0 | ((codePoint >> 12) & 0x0F)));
            result.push_back(
                static_cast<char>(0x80 | ((codePoint >> 6) & 0x3F)));
            result.push_back(static_cast<char>(0x80 | (codePoint & 0x3F)));
        } else {
            result.push_back(
                static_cast<char>(0xF0 | ((codePoint >> 18) & 0x07)));
            result.push_back(
                static_cast<char>(0x80 | ((codePoint >> 12) & 0x3F)));
            result.push_back(
                static_cast<char>(0x80 | ((codePoint >> 6) & 0x3F)));
            result.push_back(static_cast<char>(0x80 | (codePoint & 0x3F)));
        }
        return result;
    }
}    // namespace utility::graphic