Fan.Sys.Uri.Uri C# (CSharp) Method

        static Uri()
        {
            // alpha/digits characters
              byte unreserved = SCHEME | USER | HOST | PATH | QUERY | FRAG;
              for (int i='a'; i<='z'; ++i) { charMap[i] = unreserved; nameMap[i] = true; }
              for (int i='A'; i<='Z'; ++i) { charMap[i] = unreserved; nameMap[i] = true; }
              for (int i='0'; i<='9'; ++i) { charMap[i] = unreserved; nameMap[i] = true; }

              // unreserved symbols
              charMap['-'] = unreserved; nameMap['-'] = true;
              charMap['.'] = unreserved; nameMap['.'] = true;
              charMap['_'] = unreserved; nameMap['_'] = true;
              charMap['~'] = unreserved; nameMap['~'] = true;

              // hex
              for (int i='0'; i<='9'; ++i) charMap[i] |= HEX | DIGIT;
              for (int i='a'; i<='f'; ++i) charMap[i] |= HEX;
              for (int i='A'; i<='F'; ++i) charMap[i] |= HEX;

              // sub-delimiter symbols
              charMap['!']  = USER | HOST | PATH | QUERY | FRAG;
              charMap['$']  = USER | HOST | PATH | QUERY | FRAG;
              charMap['&']  = USER | HOST | PATH | QUERY | FRAG;
              charMap['\''] = USER | HOST | PATH | QUERY | FRAG;
              charMap['(']  = USER | HOST | PATH | QUERY | FRAG;
              charMap[')']  = USER | HOST | PATH | QUERY | FRAG;
              charMap['*']  = USER | HOST | PATH | QUERY | FRAG;
              charMap['+']  = SCHEME | USER | HOST | PATH | FRAG;
              charMap[',']  = USER | HOST | PATH | QUERY | FRAG;
              charMap[';']  = USER | HOST | PATH | QUERY | FRAG;
              charMap['=']  = USER | HOST | PATH | QUERY | FRAG;

              // gen-delimiter symbols
              charMap[':'] = PATH | USER | QUERY | FRAG;
              charMap['/'] = PATH | QUERY | FRAG;
              charMap['?'] = QUERY | FRAG;
              charMap['#'] = 0;
              charMap['['] = 0;
              charMap[']'] = 0;
              charMap['@'] = PATH | QUERY | FRAG;

              // delimiter escape map - which characters need to
              // be backslashed escaped in each section
              delimEscMap[':']  = PATH;
              delimEscMap['/']  = PATH;
              delimEscMap['?']  = PATH;
              delimEscMap['#']  = PATH | QUERY;
              delimEscMap['&']  = QUERY;
              delimEscMap[';']  = QUERY;
              delimEscMap['=']  = QUERY;
              delimEscMap['\\'] = SCHEME | USER | HOST | PATH | QUERY | FRAG;
        }