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Groovy: A powerful, dynamic language for the JVM
/*
* Copyright 2003-2007 the original author or authors.
*
* Licensed 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 groovy.text;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringReader;
import java.io.InputStream;
import java.net.URL;
import org.codehaus.groovy.control.CompilationFailedException;
import org.codehaus.groovy.runtime.DefaultGroovyMethods;
import org.codehaus.groovy.runtime.DefaultGroovyMethodsSupport;
/**
* Represents an API to any template engine which is basically a factory of Template instances from a given text input.
*
* @author sam
*/
public abstract class TemplateEngine {
public abstract Template createTemplate(Reader reader) throws CompilationFailedException, ClassNotFoundException, IOException;
public Template createTemplate(String templateText) throws CompilationFailedException, ClassNotFoundException, IOException {
return createTemplate(new StringReader(templateText));
}
public Template createTemplate(File file) throws CompilationFailedException, ClassNotFoundException, IOException {
Reader reader = new FileReader(file);
try {
return createTemplate(reader);
} finally {
DefaultGroovyMethodsSupport.closeWithWarning(reader);
}
}
public Template createTemplate(URL url) throws CompilationFailedException, ClassNotFoundException, IOException {
Reader reader = new InputStreamReader(url.openStream());
try {
return createTemplate(reader);
} finally {
DefaultGroovyMethodsSupport.closeWithWarning(reader);
}
}
}