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220
test/org/apache/jasper/compiler/Dumper.java
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220
test/org/apache/jasper/compiler/Dumper.java
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.jasper.compiler;
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import org.apache.jasper.JasperException;
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import org.xml.sax.Attributes;
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class Dumper {
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static class DumpVisitor extends Node.Visitor {
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private int indent = 0;
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private String getAttributes(Attributes attrs) {
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if (attrs == null)
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return "";
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StringBuilder buf = new StringBuilder();
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for (int i=0; i < attrs.getLength(); i++) {
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buf.append(" " + attrs.getQName(i) + "=\""
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+ attrs.getValue(i) + "\"");
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}
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return buf.toString();
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}
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private void printString(String str) {
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printIndent();
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System.out.print(str);
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}
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private void printString(String prefix, String str, String suffix) {
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printIndent();
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if (str != null) {
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System.out.print(prefix + str + suffix);
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} else {
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System.out.print(prefix + suffix);
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}
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}
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private void printAttributes(String prefix, Attributes attrs,
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String suffix) {
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printString(prefix, getAttributes(attrs), suffix);
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}
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private void dumpBody(Node n) throws JasperException {
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Node.Nodes page = n.getBody();
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if (page != null) {
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// indent++;
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page.visit(this);
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// indent--;
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}
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}
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@Override
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public void visit(Node.PageDirective n) throws JasperException {
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printAttributes("<%@ page", n.getAttributes(), "%>");
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}
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@Override
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public void visit(Node.TaglibDirective n) throws JasperException {
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printAttributes("<%@ taglib", n.getAttributes(), "%>");
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}
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@Override
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public void visit(Node.IncludeDirective n) throws JasperException {
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printAttributes("<%@ include", n.getAttributes(), "%>");
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dumpBody(n);
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}
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@Override
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public void visit(Node.Comment n) throws JasperException {
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printString("<%--", n.getText(), "--%>");
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}
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@Override
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public void visit(Node.Declaration n) throws JasperException {
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printString("<%!", n.getText(), "%>");
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}
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@Override
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public void visit(Node.Expression n) throws JasperException {
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printString("<%=", n.getText(), "%>");
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}
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@Override
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public void visit(Node.Scriptlet n) throws JasperException {
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printString("<%", n.getText(), "%>");
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}
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@Override
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public void visit(Node.IncludeAction n) throws JasperException {
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printAttributes("<jsp:include", n.getAttributes(), ">");
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dumpBody(n);
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printString("</jsp:include>");
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}
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@Override
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public void visit(Node.ForwardAction n) throws JasperException {
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printAttributes("<jsp:forward", n.getAttributes(), ">");
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dumpBody(n);
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printString("</jsp:forward>");
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}
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@Override
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public void visit(Node.GetProperty n) throws JasperException {
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printAttributes("<jsp:getProperty", n.getAttributes(), "/>");
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}
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@Override
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public void visit(Node.SetProperty n) throws JasperException {
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printAttributes("<jsp:setProperty", n.getAttributes(), ">");
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dumpBody(n);
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printString("</jsp:setProperty>");
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}
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@Override
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public void visit(Node.UseBean n) throws JasperException {
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printAttributes("<jsp:useBean", n.getAttributes(), ">");
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dumpBody(n);
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printString("</jsp:useBean>");
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}
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@Override
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public void visit(Node.PlugIn n) throws JasperException {
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printAttributes("<jsp:plugin", n.getAttributes(), ">");
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dumpBody(n);
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printString("</jsp:plugin>");
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}
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@Override
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public void visit(Node.ParamsAction n) throws JasperException {
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printAttributes("<jsp:params", n.getAttributes(), ">");
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dumpBody(n);
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printString("</jsp:params>");
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}
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@Override
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public void visit(Node.ParamAction n) throws JasperException {
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printAttributes("<jsp:param", n.getAttributes(), ">");
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dumpBody(n);
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printString("</jsp:param>");
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}
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@Override
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public void visit(Node.NamedAttribute n) throws JasperException {
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printAttributes("<jsp:attribute", n.getAttributes(), ">");
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dumpBody(n);
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printString("</jsp:attribute>");
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}
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@Override
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public void visit(Node.JspBody n) throws JasperException {
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printAttributes("<jsp:body", n.getAttributes(), ">");
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dumpBody(n);
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printString("</jsp:body>");
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}
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@Override
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public void visit(Node.ELExpression n) throws JasperException {
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printString( "${" + n.getText() + "}" );
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}
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@Override
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public void visit(Node.CustomTag n) throws JasperException {
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printAttributes("<" + n.getQName(), n.getAttributes(), ">");
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dumpBody(n);
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printString("</" + n.getQName() + ">");
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}
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@Override
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public void visit(Node.UninterpretedTag n) throws JasperException {
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String tag = n.getQName();
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printAttributes("<"+tag, n.getAttributes(), ">");
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dumpBody(n);
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printString("</" + tag + ">");
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}
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@Override
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public void visit(Node.TemplateText n) throws JasperException {
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printString(n.getText());
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}
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private void printIndent() {
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for (int i=0; i < indent; i++) {
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System.out.print(" ");
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}
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}
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}
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public static void dump(Node n) {
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try {
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n.accept(new DumpVisitor());
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} catch (JasperException e) {
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e.printStackTrace();
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}
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}
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public static void dump(Node.Nodes page) {
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try {
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page.visit(new DumpVisitor());
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} catch (JasperException e) {
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e.printStackTrace();
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}
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}
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}
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