Read non-UTF8 file

[Nrgyzer]

Hey guys,

I've the following source:

module filereader;

import std.file;
import std.stdio : writeln;

void main(string[] args) {
        File f = new File("myFile.ext", FileMode.In);
        while(!f.eof()) {
                writeln(convertToUTF8(f.readLine()));
        }
        f.close();
}

string convertToUTF8(char[] text) {
        string result;
        for (uint i=0; i<text.length; i++) {
                wchar ch = text[i];
                if (ch < 0x80) {
                        result ~= ch;
                } else {
                        result ~= 0xC0 | (ch >> 6);
                        result ~= 0x80 | (ch & 0x3F);
                }
        }
        return result;
}

It compiles and works as long as the returned char-array/string of f.readLine() 
doesn't contain non-UTF8 character(s). If it contains such
chars, writeln() doesn't write anything to the console. Is there any chance to 
read such files?

Thanks a lot!