protected boolean filter()

in java/org/apache/catalina/loader/WebappClassLoaderBase.java [2234:2320]
74 lines of code
52 McCabe index (conditional complexity)

    protected boolean filter(String name, boolean isClassName) {

        if (name == null) {
            return false;
        }

        char ch;
        if (name.startsWith("jakarta")) {
            /* 7 == length("jakarta") */
            if (name.length() == 7) {
                return false;
            }
            ch = name.charAt(7);
            if (isClassName && ch == '.') {
                /* 8 == length("jakarta.") */
                if (name.startsWith("servlet.jsp.jstl.", 8)) {
                    return false;
                }
                if (name.startsWith("annotation.", 8) || name.startsWith("el.", 8) || name.startsWith("servlet.", 8) ||
                        name.startsWith("websocket.", 8) || name.startsWith("security.auth.message.", 8)) {
                    return true;
                }
            } else if (!isClassName && ch == '/') {
                /* 8 == length("jakarta/") */
                if (name.startsWith("servlet/jsp/jstl/", 8)) {
                    return false;
                }
                if (name.startsWith("annotation/", 8) || name.startsWith("el/", 8) || name.startsWith("servlet/", 8) ||
                        name.startsWith("websocket/", 8) || name.startsWith("security/auth/message/", 8)) {
                    return true;
                }
            }
        } else if (name.startsWith("javax")) {
            /* 5 == length("javax") */
            if (name.length() == 5) {
                return false;
            }
            ch = name.charAt(5);
            if (isClassName && ch == '.') {
                /* 6 == length("javax.") */
                if (name.startsWith("websocket.", 6)) {
                    return true;
                }
            } else if (!isClassName && ch == '/') {
                /* 6 == length("javax/") */
                if (name.startsWith("websocket/", 6)) {
                    return true;
                }
            }
        } else if (name.startsWith("org")) {
            /* 3 == length("org") */
            if (name.length() == 3) {
                return false;
            }
            ch = name.charAt(3);
            if (isClassName && ch == '.') {
                /* 4 == length("org.") */
                if (name.startsWith("apache.", 4)) {
                    /* 11 == length("org.apache.") */
                    if (name.startsWith("tomcat.jdbc.", 11)) {
                        return false;
                    }
                    if (name.startsWith("el.", 11) || name.startsWith("catalina.", 11) ||
                            name.startsWith("jasper.", 11) || name.startsWith("juli.", 11) ||
                            name.startsWith("tomcat.", 11) || name.startsWith("naming.", 11) ||
                            name.startsWith("coyote.", 11)) {
                        return true;
                    }
                }
            } else if (!isClassName && ch == '/') {
                /* 4 == length("org/") */
                if (name.startsWith("apache/", 4)) {
                    /* 11 == length("org/apache/") */
                    if (name.startsWith("tomcat/jdbc/", 11)) {
                        return false;
                    }
                    if (name.startsWith("el/", 11) || name.startsWith("catalina/", 11) ||
                            name.startsWith("jasper/", 11) || name.startsWith("juli/", 11) ||
                            name.startsWith("tomcat/", 11) || name.startsWith("naming/", 11) ||
                            name.startsWith("coyote/", 11)) {
                        return true;
                    }
                }
            }
        }
        return false;
    }