| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package flex.messaging.util; |
| |
| import java.lang.reflect.Array; |
| import java.lang.reflect.Method; |
| import java.util.Calendar; |
| import java.util.Collection; |
| import java.util.Date; |
| import java.util.Map; |
| |
| /** |
| * Prettifies the representation of an Object as a String. Complex |
| * types are not traversed. |
| * |
| * |
| */ |
| public class BasicPrettyPrinter implements PrettyPrinter |
| { |
| protected ObjectTrace trace; |
| |
| public BasicPrettyPrinter() |
| { |
| } |
| |
| /** |
| * Prettifies the representation of an Object as a String. |
| * <ul> |
| * <li>Simple types are simply toString'ed.</li> |
| * <li>XML strings are formatted with line feeds and indentations.</li> |
| * <li>Complex types report their class names.</li> |
| * <li>Collections, Maps and native Arrays also report their size/length.</li> |
| * </ul> |
| * @return A prettified version of an Object as a String. |
| */ |
| public String prettify(Object o) |
| { |
| try |
| { |
| trace = new ObjectTrace(); |
| internalPrettify(o); |
| return trace.toString(); |
| } |
| catch (Throwable t) |
| { |
| return trace.toString(); |
| } |
| finally |
| { |
| trace = null; |
| } |
| } |
| |
| protected void internalPrettify(Object o) |
| { |
| if (o == null) |
| { |
| trace.writeNull(); |
| } |
| else if (o instanceof String) |
| { |
| String string = (String)o; |
| if (string.startsWith("<?xml")) |
| { |
| trace.write(StringUtils.prettifyXML(string)); |
| } |
| else |
| { |
| trace.write(string); |
| } |
| } |
| else if (o instanceof Number || o instanceof Boolean || o instanceof Date |
| || o instanceof Calendar || o instanceof Character) |
| { |
| trace.write(o); |
| } |
| else |
| { |
| prettifyComplexType(o); |
| } |
| } |
| |
| protected void prettifyComplexType(Object o) |
| { |
| StringBuffer header = new StringBuffer(); |
| |
| if (o instanceof PrettyPrintable) |
| { |
| PrettyPrintable pp = (PrettyPrintable)o; |
| header.append(pp.toStringHeader()); |
| } |
| |
| Class c = o.getClass(); |
| String className = c.getName(); |
| |
| if (o instanceof Collection) |
| { |
| header.append(className).append(" (Collection size:").append(((Collection)o).size()).append(")"); |
| } |
| else if (o instanceof Map) |
| { |
| header.append(className).append(" (Map size:").append(((Map)o).size()).append(")"); |
| } |
| else if (c.isArray() && c.getComponentType() != null) |
| { |
| Class componentType = c.getComponentType(); |
| className = componentType.getName(); |
| header.append(className).append("[] (Array length:").append(Array.getLength(o)).append(")"); |
| } |
| else |
| { |
| header.append(className); |
| } |
| |
| trace.startObject(header.toString()); |
| trace.endObject(); |
| } |
| |
| /** |
| * If the definition of toString is not from java.lang.Object or any class in the |
| * java.util.* package then we consider it a custom implementation in which case |
| * we'll use it instead of introspecting the class. |
| * |
| * @param c The class to check for a custom toString definition. |
| * @return Whether this class declares a custom toString() method. |
| */ |
| protected boolean hasCustomToStringMethod(Class c) |
| { |
| try |
| { |
| Method toStringMethod = c.getMethod("toString", (Class[])null); |
| Class declaringClass = toStringMethod.getDeclaringClass(); |
| if (declaringClass != Object.class |
| && !declaringClass.getName().startsWith("java.util")) |
| { |
| return true; |
| } |
| } |
| catch (Throwable t) |
| { |
| } |
| |
| return false; |
| } |
| |
| public Object copy() |
| { |
| return new BasicPrettyPrinter(); |
| } |
| } |