// hash values crc1 and crc2. poly represents the generator polynomial
// and len2 specifies the byte length that the crc2 hash covers.
func crc32Combine(poly uint32, crc1, crc2 uint32, len2 int64) uint32 {
	// degenerate case (also disallow negative lengths)
	if len2 <= 0 {
		return crc1
	}

	even := make([]uint64, 32) // even-power-of-two zeros operator
	odd := make([]uint64, 32)  // odd-power-of-two zeros operator

	// connection to the server for a subsequent "keep-alive" request.
	if respBody != nil {
		// Drain any remaining Body and then close the connection.
		// Without this closing connection would disallow re-using
		// the same connection for future uses.
		//  - http://stackoverflow.com/a/17961593/4465767
		defer respBody.Close()
		xioutil.DiscardReader(respBody)
	}

        params {
            param("credentialsStorageType", "credentialsJSON")
            // Disallow Web UI changes to TeamCity settings
            param("teamcity.ui.settings.readOnly", "true")
            // Avoid rebuilding same revision if it's already built on another branch

     */
    protected void initDisallowCompound(final String prop) {
        if (prop == null) {
            return;
        }
        final Set<String> disallow = new HashSet<>();
        final StringTokenizer st = new StringTokenizer(prop, ",");
        while (st.hasMoreTokens()) {
            disallow.add(st.nextToken().trim());
        }

        }
    }

    protected
    fun fetchVersionsFromMavenMetadata(url: String): List<String> =
        DocumentBuilderFactory.newInstance().apply {
            setFeature("http://apache.org/xml/features/disallow-doctype-decl", true)
            setFeature("http://xml.org/sax/features/external-general-entities", false)
            setFeature("http://xml.org/sax/features/external-parameter-entities", false)

 public:
  AbstractContextKind getKind() const { return kind_; }

  // Release any underlying resources, including the interface object.
  //
  // WARNING: The destructor of this class is marked as protected to disallow
  // clients from directly destroying this object since it may manage its own
  // lifetime through ref counting. Thus clients MUST call Release() in order to
  // destroy an instance of this class.
  virtual void Release() = 0;

        assertTrue(robotsTxt.allows("/public/", "MyBot")); // Not disallowed
    }

    public void test_allowsWithAllowOverridingDisallow() {
        // Test that allow takes precedence over disallow
        RobotsTxt robotsTxt = new RobotsTxt();

        Directive directive = new Directive("MyBot");
        directive.addDisallow("/admin/");
        directive.addAllow("/admin/public/");

        this.redirectHttpStatusPattern = redirectHttpStatusPattern;
    }

    /**
     * Sets whether to use robots.txt disallow rules.
     *
     * @param useRobotsTxtDisallows True to use disallow rules, false otherwise
     */
    public void setUseRobotsTxtDisallows(final boolean useRobotsTxtDisallows) {
        this.useRobotsTxtDisallows = useRobotsTxtDisallows;
    }

        // Check protocol versions
        assertNotNull(testConfig.getMinimumVersion());
        assertNotNull(testConfig.getMaximumVersion());

        // Check disallow compound
        assertNotNull(testConfig.disallowCompound);
        assertTrue(testConfig.disallowCompound.contains("Smb2SessionSetupRequest"));
        assertTrue(testConfig.disallowCompound.contains("Smb2TreeConnectRequest"));

		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}

	var ignoreInUse bool
	if forceStr := r.Form.Get("force"); forceStr != "" {
		ignoreInUse, _ = strconv.ParseBool(forceStr)
	}

	// Disallow remote tiers with internal storage class names
	switch cfg.Name {
	case storageclass.STANDARD, storageclass.RRS:
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, errTierReservedName), r.URL)
		return
	}