/*
* 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.PlugIn n)
throws JasperException {
printAttributes(
"<jsp:plugin", n.getAttributes(),
">");
dumpBody(n);
printString(
"</jsp:plugin>");
}
@Override
public void visit(Node.ParamsAction n)
throws JasperException {
printAttributes(
"<jsp:params", n.getAttributes(),
">");
dumpBody(n);
printString(
"</jsp:params>");
}
@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();
}
}
}