static String getPackageName()

in src/main/java/org/apache/commons/jexl3/internal/introspection/ClassTool.java [64:103]

• 35 lines of code
• 9 McCabe index (conditional complexity)

    static String getPackageName(final Class<?> clz) {
        String pkgName = "";
        if (clz != null) {
            // use native if we can
            if (GET_PKGNAME != null) {
                try {
                    return (String) GET_PKGNAME.invoke(clz);
                } catch (final Throwable xany) {
                    return "";
                }
            }
            // remove array
            Class<?> clazz = clz;
            while (clazz.isArray()) {
                clazz = clazz.getComponentType();
            }
            // mimic getPackageName()
            if (clazz.isPrimitive()) {
                return "java.lang";
            }
            // remove enclosing
            Class<?> walk = clazz.getEnclosingClass();
            while (walk != null) {
                clazz = walk;
                walk = walk.getEnclosingClass();
            }
            final Package pkg = clazz.getPackage();
            // pkg may be null for unobvious reasons
            if (pkg == null) {
                final String name = clazz.getName();
                final int dot = name.lastIndexOf('.');
                if (dot > 0) {
                    pkgName = name.substring(0, dot);
                }
            } else {
                pkgName = pkg.getName();
            }
        }
        return pkgName;
    }