The iconv String Converter
For Linux and Unix platforms, IceUtil provides an IconvStringConverter template class that uses the iconv conversion facility to convert between the native encoding and UTF-8. The only member function of interest is the constructor:
template<typename charT>
class IconvStringConverter : public IceUtil::BasicStringConverter<charT>
{
public:
IconvStringConverter(const char* = nl_langinfo(CODESET));
// ...
};
To use this string converter, you specify whether the conversion you want is for narrow or wide characters via the template argument, and you specify the corresponding native encoding with the constructor argument. For example, to create a converter that converts between ISO Latin-1 and UTF-8, you can instantiate the converter as follows:
StringConverterPtr stringConverter = new IconvStringConverter<char>("ISO-8859-1");
Similarly, to convert between the internal wide character encoding and UTF-8, you can instantiate a converter as follows:
WstringConverterPtr wstringConverter = new IconvStringConverter<wchar_t>("WCHAR_T");
The string you pass to the constructor must be one of the values returned by iconv -l, which lists all the available character encodings for your machine.
Using the IconvStringConverter template makes it easy to install code converters for any available encoding without having to explicitly write (or call) conversion routines, whose implementation is typically non-trivial.