utils.hpp

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#ifndef KNNCOLLE_UTILS_HPP
#define KNNCOLLE_UTILS_HPP
 
#include <fstream>
#include <string>
#include <cstddef>
#include <type_traits>
#include <filesystem>
 
#include "sanisizer/sanisizer.hpp"
 
namespace knncolle {
 
template<typename Input_, typename Length_>
void quick_save(const std::filesystem::path& path, const Input_* const contents, const Length_ length) {
    std::ofstream output(path, std::ofstream::binary);
    if (!output) {
        throw std::runtime_error("failed to open a binary file at '" + path.string() + "'");
    }
 
    output.exceptions(std::ofstream::failbit | std::ofstream::badbit);
    output.write(reinterpret_cast<const char*>(contents), sanisizer::product<std::streamsize>(sizeof(Input_), sanisizer::attest_gez(length)));
}
 
template<typename Input_, typename Length_>
void quick_load(const std::filesystem::path& path, Input_* const contents, const Length_ length) {
    std::ifstream input(path, std::ifstream::binary);
    if (!input) {
        throw std::runtime_error("failed to open a binary file at '" + path.string() + "'");
    }
 
    input.exceptions(std::ifstream::failbit | std::ifstream::badbit);
    input.read(reinterpret_cast<char*>(contents), sanisizer::product<std::streamsize>(sizeof(Input_), sanisizer::attest_gez(length)));
}
 
inline std::string quick_load_as_string(const std::filesystem::path& path) {
    std::ifstream input(path, std::ifstream::binary);
    if (!input) {
        throw std::runtime_error("failed to open a binary file at '" + path.string() + "'");
    }
 
    input.exceptions(std::ifstream::failbit | std::ifstream::badbit);
    return std::string( (std::istreambuf_iterator<char>(input)), (std::istreambuf_iterator<char>()) );
}
 
template<typename Input_>
using I = std::remove_cv_t<std::remove_reference_t<Input_> >;
}
 
#endif