geode/loader/include/Geode/utils/general.hpp

#pragma once

#include "Result.hpp"

#include <Geode/DefaultInclude.hpp>
#include <chrono>
#include <iomanip>
#include <sstream>
#include <string>

#undef snprintf

namespace geode::utils {
    constexpr unsigned int hash(char const* str, int h = 0) {
        return !str[h] ? 5381 : (hash(str, h + 1) * 33) ^ str[h];
    }

    constexpr unsigned int hash(wchar_t const* str, int h = 0) {
        return !str[h] ? 5381 : (hash(str, h + 1) * 33) ^ str[h];
    }

    constexpr size_t operator"" _h(char const* txt, size_t) {
        return geode::utils::hash(txt);
    }

    constexpr size_t operator"" _h(wchar_t const* txt, size_t) {
        return geode::utils::hash(txt);
    }

    template <typename T>
    constexpr const T& clamp(const T& value, const T& minValue, const T& maxValue) {
        return value < minValue ? minValue : maxValue < value ? maxValue : value;
    }

    // from https://stackoverflow.com/questions/2342162/stdstring-formatting-like-sprintf
    template <typename... Args>
    std::string strfmt(std::string const& format, Args... args) {
        int size_s = std::snprintf(nullptr, 0, format.c_str(), args...) + 1; // Extra space for '\0'
        if (size_s <= 0) {
            throw std::runtime_error("Error during formatting.");
        }
        auto size = static_cast<size_t>(size_s);
        auto buf = std::make_unique<char[]>(size);
        std::snprintf(buf.get(), size, format.c_str(), args...);
        return std::string(buf.get(), buf.get() + size - 1);
    }

    /**
     * Format a string
     * @returns Pointer to char array. MAKE SURE TO CALL DELETE[]!
     */
    template <typename... Args>
    char const* cstrfmt(char const* fmt, Args... args) {
        auto str = strfmt(fmt, args...);
        char* ptr = new char[str.size() + 1];
        strcpy_s(ptr, str.c_str());
        return ptr;
    }

    template <typename T>
    std::string intToHex(T i) {
        std::stringstream stream;
        stream << std::showbase << std::setbase(16) << (uint64_t)i;
        return stream.str();
    }

    /**
     * Turn a number into a string, with support for specifying precision
     * (unlike std::to_string).
     * @param num Number to convert to string
     * @param precision Precision of the converted number
     * @returns Number as string
     */
    template <class Num>
    std::string numToString(Num num, size_t precision = 0) {
        std::stringstream ss;
        if (precision) {
            ss << std::fixed << std::setprecision(precision);
        }
        ss << num;
        return ss.str();
    }

    GEODE_DLL std::string timePointAsString(std::chrono::system_clock::time_point const& tp);
}