case _UT()

in cpp/src/arrow/vendored/uriparser/UriEscape.c [271:419]
128 lines of code
61 McCabe index (conditional complexity)

		case _UT('%'):
			switch (read[1]) {
			case _UT('0'):
			case _UT('1'):
			case _UT('2'):
			case _UT('3'):
			case _UT('4'):
			case _UT('5'):
			case _UT('6'):
			case _UT('7'):
			case _UT('8'):
			case _UT('9'):
			case _UT('a'):
			case _UT('b'):
			case _UT('c'):
			case _UT('d'):
			case _UT('e'):
			case _UT('f'):
			case _UT('A'):
			case _UT('B'):
			case _UT('C'):
			case _UT('D'):
			case _UT('E'):
			case _UT('F'):
				switch (read[2]) {
				case _UT('0'):
				case _UT('1'):
				case _UT('2'):
				case _UT('3'):
				case _UT('4'):
				case _UT('5'):
				case _UT('6'):
				case _UT('7'):
				case _UT('8'):
				case _UT('9'):
				case _UT('a'):
				case _UT('b'):
				case _UT('c'):
				case _UT('d'):
				case _UT('e'):
				case _UT('f'):
				case _UT('A'):
				case _UT('B'):
				case _UT('C'):
				case _UT('D'):
				case _UT('E'):
				case _UT('F'):
					{
						/* Percent group found */
						const unsigned char left = URI_FUNC(HexdigToInt)(read[1]);
						const unsigned char right = URI_FUNC(HexdigToInt)(read[2]);
						const int code = 16 * left + right;
						switch (code) {
						case 10:
							switch (breakConversion) {
							case URI_BR_TO_LF:
								if (!prevWasCr) {
									write[0] = (URI_CHAR)10;
									write++;
								}
								break;

							case URI_BR_TO_CRLF:
								if (!prevWasCr) {
									write[0] = (URI_CHAR)13;
									write[1] = (URI_CHAR)10;
									write += 2;
								}
								break;

							case URI_BR_TO_CR:
								if (!prevWasCr) {
									write[0] = (URI_CHAR)13;
									write++;
								}
								break;

							case URI_BR_DONT_TOUCH:
							default:
								write[0] = (URI_CHAR)10;
								write++;

							}
							prevWasCr = URI_FALSE;
							break;

						case 13:
							switch (breakConversion) {
							case URI_BR_TO_LF:
								write[0] = (URI_CHAR)10;
								write++;
								break;

							case URI_BR_TO_CRLF:
								write[0] = (URI_CHAR)13;
								write[1] = (URI_CHAR)10;
								write += 2;
								break;

							case URI_BR_TO_CR:
								write[0] = (URI_CHAR)13;
								write++;
								break;

							case URI_BR_DONT_TOUCH:
							default:
								write[0] = (URI_CHAR)13;
								write++;

							}
							prevWasCr = URI_TRUE;
							break;

						default:
							write[0] = (URI_CHAR)(code);
							write++;

							prevWasCr = URI_FALSE;

						}
						read += 3;
					}
					break;

				default:
					/* Copy two chars unmodified and */
					/* look at this char again */
					if (read > write) {
						write[0] = read[0];
						write[1] = read[1];
					}
					read += 2;
					write += 2;

					prevWasCr = URI_FALSE;
				}
				break;

			default:
				/* Copy one char unmodified and */
				/* look at this char again */
				if (read > write) {
					write[0] = read[0];
				}
				read++;
				write++;

				prevWasCr = URI_FALSE;
			}