/*
* 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.cocoon.template.instruction;
import java.util.HashMap;
import java.util.Map;
import java.util.Stack;
import org.apache.cocoon.components.expression.ExpressionContext;
import org.apache.cocoon.template.environment.ExecutionContext;
import org.apache.cocoon.template.environment.ParsingContext;
import org.apache.cocoon.template.script.event.Characters;
import org.apache.cocoon.template.script.event.Event;
import org.apache.cocoon.template.script.event.IgnorableWhitespace;
import org.apache.cocoon.template.script.event.StartElement;
import org.apache.cocoon.template.script.event.TextEvent;
import org.apache.cocoon.xml.XMLConsumer;
import org.apache.commons.lang.StringUtils;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
/**
* @version SVN $Id: Define.java 449189 2006-09-23 06:52:29Z crossley $
*/
public class Define extends Instruction {
private final String name;
private final String namespace;
private final String qname;
private final Map parameters;
private Event body;
public Define(ParsingContext parsingContext, StartElement raw, Attributes attrs, Stack stack)
throws SAXException {
super(raw);
// <macro name="myTag" targetNamespace="myNamespace">
// <parameter name="paramName" required="Boolean"
// default="value"/>
// body
// </macro>
this.namespace = StringUtils.defaultString(attrs.getValue("targetNamespace"));
this.name = attrs.getValue("name");
if (this.name == null) {
throw new SAXParseException("macro: \"name\" is required", getLocation(), null);
}
this.qname = "{" + namespace + "}" + name;
this.parameters = new HashMap();
}
public Event execute(final XMLConsumer consumer,
ExpressionContext expressionContext, ExecutionContext executionContext,
MacroContext macroContext, Event startEvent, Event endEvent)
throws SAXException {
executionContext.getDefinitions().put(this.qname, this);
return getEndInstruction().getNext();
}
public void endNotify() throws SAXException {
Event e = next;
boolean params = true;
while (e != this.getEndInstruction()) {
if (e instanceof Parameter) {
Parameter startParam = (Parameter) e;
if (!params) {
throw new SAXParseException(
"<parameter> not allowed here: \""
+ startParam.name + "\"", startParam
.getLocation(), null);
}
Object prev = this.parameters.put(startParam.name, startParam);
if (prev != null) {
throw new SAXParseException("duplicate parameter: \""
+ startParam.name + "\"", location, null);
}
e = startParam.getEndInstruction();
} else if (e instanceof IgnorableWhitespace) {
// EMPTY
} else if (e instanceof Characters) {
// check for whitespace
char[] ch = ((TextEvent) e).getRaw();
int len = ch.length;
for (int i = 0; i < len; i++) {
if (!Character.isWhitespace(ch[i])) {
if (params) {
params = false;
this.body = e;
}
break;
}
}
} else {
if (params) {
params = false;
this.body = e;
}
}
e = e.getNext();
}
if (this.body == null) {
this.body = this.getEndInstruction();
}
}
public Map getParameters() {
return parameters;
}
public Event getBody() {
return body;
}
public String getQname() {
return qname;
}
}