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/*
* 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.tuscany.implementation.script;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.URL;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;
import org.apache.tuscany.assembly.Implementation;
import org.apache.tuscany.spi.implementation.XMLSCDLProcessor;
public class ScriptXMLSCDLProcessor implements XMLSCDLProcessor {
private static final String SCRIPT = "script";
private static final String LANGUAGE = "language";
public void read(Implementation impl, XMLStreamReader reader) {
ScriptImplementation scriptImplementation = (ScriptImplementation)impl;
String scriptName = reader.getAttributeValue(null, SCRIPT);
scriptImplementation.setScriptName(scriptName);
String scriptLanguage = reader.getAttributeValue(null, LANGUAGE);
if (scriptLanguage == null || scriptLanguage.length() < 1) {
int i = scriptName.lastIndexOf('.');
scriptLanguage = scriptName.substring(i+1);
}
scriptImplementation.setScriptLanguage(scriptLanguage);
scriptImplementation.setScriptSrc(readScript(scriptImplementation.getScriptName()));
}
public void write(Implementation impl, XMLStreamWriter writer) {
}
protected String readScript(String scriptName) {
ClassLoader cl = Thread.currentThread().getContextClassLoader();
URL scriptSrcUrl = cl.getResource(scriptName);
if (scriptSrcUrl == null) {
throw new RuntimeException("No script: " + scriptName);
}
InputStream is;
try {
is = scriptSrcUrl.openStream();
} catch (IOException e) {
throw new RuntimeException(e);
}
try {
Reader reader = new InputStreamReader(is, "UTF-8");
char[] buffer = new char[1024];
StringBuilder source = new StringBuilder();
int count;
while ((count = reader.read(buffer)) > 0) {
source.append(buffer, 0, count);
}
return source.toString();
} catch (IOException e) {
throw new RuntimeException(e);
} finally {
try {
is.close();
} catch (IOException e) {
// ignore
}
}
}
}
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