/*
* 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 org.apache.jasper.compiler;
import org.apache.jasper.JasperException;
import org.xml.sax.Attributes;
class Dumper {
static class DumpVisitor extends Node.Visitor {
private int indent = 0;
private String getAttributes(Attributes attrs) {
if (attrs == null) {
return "";
}
StringBuilder buf = new StringBuilder();
for (int i = 0; i < attrs.getLength(); i++) {
buf.append(" " + attrs.getQName(i) + "=\"" + attrs.getValue(i) + "\"");
}
return buf.toString();
}
private void printString(String str) {
printIndent();
System.out.print(str);
}
private void printString(String prefix, String str, String suffix) {
printIndent();
if (str != null) {
System.out.print(prefix + str + suffix);
} else {
System.out.print(prefix + suffix);
}
}
private void printAttributes(String prefix, Attributes attrs, String suffix) {
printString(prefix, getAttributes(attrs), suffix);
}
private void dumpBody(Node n) throws JasperException {
Node.Nodes page = n.getBody();
if (page != null) {
// indent++;
page.visit(this);
// indent--;
}
}
@Override
public void visit(Node.PageDirective n) throws JasperException {
printAttributes("<%@ page", n.getAttributes(), "%>");
}
@Override
public void visit(Node.TaglibDirective n) throws JasperException {
printAttributes("<%@ taglib", n.getAttributes(), "%>");
}
@Override
public void visit(Node.IncludeDirective n) throws JasperException {
printAttributes("<%@ include", n.getAttributes(), "%>");
dumpBody(n);
}
@Override
public void visit(Node.Comment n) throws JasperException {
printString("<%--", n.getText(), "--%>");
}
@Override
public void visit(Node.Declaration n) throws JasperException {
printString("<%!", n.getText(), "%>");
}
@Override
public void visit(Node.Expression n) throws JasperException {
printString("<%=", n.getText(), "%>");
}
@Override
public void visit(Node.Scriptlet n) throws JasperException {
printString("<%", n.getText(), "%>");
}
@Override
public void visit(Node.IncludeAction n) throws JasperException {
printAttributes("<jsp:include", n.getAttributes(), ">");
dumpBody(n);
printString("</jsp:include>");
}
@Override
public void visit(Node.ForwardAction n) throws JasperException {
printAttributes("<jsp:forward", n.getAttributes(), ">");
dumpBody(n);
printString("</jsp:forward>");
}
@Override
public void visit(Node.GetProperty n) throws JasperException {
printAttributes("<jsp:getProperty", n.getAttributes(), "/>");
}
@Override
public void visit(Node.SetProperty n) throws JasperException {
printAttributes("<jsp:setProperty", n.getAttributes(), ">");
dumpBody(n);
printString("</jsp:setProperty>");
}
@Override
public void visit(Node.UseBean n) throws JasperException {
printAttributes("<jsp:useBean", n.getAttributes(), ">");
dumpBody(n);
printString("</jsp:useBean>");
}
@Override
public void visit(Node.ParamAction n) throws JasperException {
printAttributes("<jsp:param", n.getAttributes(), ">");
dumpBody(n);
printString("</jsp:param>");
}
@Override
public void visit(Node.NamedAttribute n) throws JasperException {
printAttributes("<jsp:attribute", n.getAttributes(), ">");
dumpBody(n);
printString("</jsp:attribute>");
}
@Override
public void visit(Node.JspBody n) throws JasperException {
printAttributes("<jsp:body", n.getAttributes(), ">");
dumpBody(n);
printString("</jsp:body>");
}
@Override
public void visit(Node.ELExpression n) throws JasperException {
printString("${" + n.getText() + "}");
}
@Override
public void visit(Node.CustomTag n) throws JasperException {
printAttributes("<" + n.getQName(), n.getAttributes(), ">");
dumpBody(n);
printString("</" + n.getQName() + ">");
}
@Override
public void visit(Node.UninterpretedTag n) throws JasperException {
String tag = n.getQName();
printAttributes("<" + tag, n.getAttributes(), ">");
dumpBody(n);
printString("</" + tag + ">");
}
@Override
public void visit(Node.TemplateText n) throws JasperException {
printString(n.getText());
}
private void printIndent() {
for (int i = 0; i < indent; i++) {
System.out.print(" ");
}
}
}
public static void dump(Node n) {
try {
n.accept(new DumpVisitor());
} catch (JasperException e) {
e.printStackTrace();
}
}
public static void dump(Node.Nodes page) {
try {
page.visit(new DumpVisitor());
} catch (JasperException e) {
e.printStackTrace();
}
}
}