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extern "C" {
#include <iconv.h>
}
#include <array>
#include <cstddef>
#include <cstdlib>
#include <iostream>
#include <string>
#include <system_error>
class iconv_desc
{
private:
iconv_t iconvd_;
public:
iconv_desc(std::string const& tocode, std::string const& fromcode)
{
iconvd_ = iconv_open(tocode.c_str(), fromcode.c_str());
if (iconvd_ == reinterpret_cast<iconv_t>(-1))
throw std::system_error(errno, std::system_category());
}
~iconv_desc() { iconv_close(iconvd_); }
operator iconv_t() { return this->iconvd_; }
};
int main()
{
try {
auto conv_d = iconv_desc{ "ISO-8859-1", "UTF-8" };
auto from_str = std::array<char, 10>{ u8"a\xC3\xA4o\xC3\xB6u\xC3\xBC" };
auto to_str = std::array<char, 7>{};
auto from_str_ptr = from_str.data();
auto from_len = from_str.size();
auto to_str_ptr = to_str.data();
auto to_len = to_str.size();
auto const iconv_ret =
iconv(conv_d, &from_str_ptr, &from_len, &to_str_ptr, &to_len);
if (iconv_ret == static_cast<std::size_t>(-1))
throw std::system_error(errno, std::system_category());
std::cout << '\'' << from_str.data() << "\' converted to \'"
<< to_str.data() << '\'' << std::endl;
return EXIT_SUCCESS;
} catch (std::system_error const& ex) {
std::cerr << "ERROR: " << ex.code() << '\n'
<< ex.code().message() << std::endl;
}
return EXIT_FAILURE;
}
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