private void checkNotWindowsDevice()

in org.eclipse.jgit/src/org/eclipse/jgit/lib/ObjectChecker.java [954:1018]
61 lines of code
38 McCabe index (conditional complexity)

	private void checkNotWindowsDevice(byte[] raw, int ptr, int end,
			@Nullable AnyObjectId id) throws CorruptObjectException {
		switch (toLower(raw[ptr])) {
		case 'a': // AUX
			if (end - ptr >= 3
					&& toLower(raw[ptr + 1]) == 'u'
					&& toLower(raw[ptr + 2]) == 'x'
					&& (end - ptr == 3 || raw[ptr + 3] == '.')) {
				report(WIN32_BAD_NAME, id,
						JGitText.get().corruptObjectInvalidNameAux);
			}
			break;

		case 'c': // CON, COM[1-9]
			if (end - ptr >= 3
					&& toLower(raw[ptr + 2]) == 'n'
					&& toLower(raw[ptr + 1]) == 'o'
					&& (end - ptr == 3 || raw[ptr + 3] == '.')) {
				report(WIN32_BAD_NAME, id,
						JGitText.get().corruptObjectInvalidNameCon);
			}
			if (end - ptr >= 4
					&& toLower(raw[ptr + 2]) == 'm'
					&& toLower(raw[ptr + 1]) == 'o'
					&& isPositiveDigit(raw[ptr + 3])
					&& (end - ptr == 4 || raw[ptr + 4] == '.')) {
				report(WIN32_BAD_NAME, id, String.format(
						JGitText.get().corruptObjectInvalidNameCom,
						Character.valueOf(((char) raw[ptr + 3]))));
			}
			break;

		case 'l': // LPT[1-9]
			if (end - ptr >= 4
					&& toLower(raw[ptr + 1]) == 'p'
					&& toLower(raw[ptr + 2]) == 't'
					&& isPositiveDigit(raw[ptr + 3])
					&& (end - ptr == 4 || raw[ptr + 4] == '.')) {
				report(WIN32_BAD_NAME, id, String.format(
						JGitText.get().corruptObjectInvalidNameLpt,
						Character.valueOf(((char) raw[ptr + 3]))));
			}
			break;

		case 'n': // NUL
			if (end - ptr >= 3
					&& toLower(raw[ptr + 1]) == 'u'
					&& toLower(raw[ptr + 2]) == 'l'
					&& (end - ptr == 3 || raw[ptr + 3] == '.')) {
				report(WIN32_BAD_NAME, id,
						JGitText.get().corruptObjectInvalidNameNul);
			}
			break;

		case 'p': // PRN
			if (end - ptr >= 3
					&& toLower(raw[ptr + 1]) == 'r'
					&& toLower(raw[ptr + 2]) == 'n'
					&& (end - ptr == 3 || raw[ptr + 3] == '.')) {
				report(WIN32_BAD_NAME, id,
						JGitText.get().corruptObjectInvalidNamePrn);
			}
			break;
		}
	}