| 291 | DAS_API const char * rts_null = ""; |
| 292 | |
| 293 | static int hexChar ( char ch ) { |
| 294 | if ( ch>='a' && ch<='f' ) { |
| 295 | return ch - 'a' + 10; |
| 296 | } else if ( ch>='A' && ch<='F' ) { |
| 297 | return ch - 'A' + 10; |
| 298 | } else if ( ch>='0' && ch<='9' ) { |
| 299 | return ch - '0'; |
| 300 | } else { |
| 301 | return -1; |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | |
| 306 | static bool encodeUtf8Char(uint32_t ch, char * result) { |