/*
* ModeShape (http://www.modeshape.org)
*
* 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 org.modeshape.sequencer.javafile;
import java.io.IOException;
import java.io.InputStream;
import org.eclipse.jdt.core.dom.Expression;
import org.eclipse.jdt.core.dom.Name;
import org.eclipse.jdt.core.dom.StringLiteral;
import org.eclipse.jdt.internal.compiler.util.Util;
import org.modeshape.common.util.CheckArg;
/**
* Utility class for working with metadata.
*/
public class JavaMetadataUtil {
/**
* Get the length of the input stream.
*
* @param stream - the <code>InputStream</code>
* @return the length of the stream.
* @throws java.io.IOException - exceptional situation during calculating the length.
*/
public static long length( InputStream stream ) throws IOException {
return stream.available();
}
/**
* Gets Java source from the <code>InputStream</code>.
*
* @param inputStream - the <code>FileInputStream</code>.
* @param length - the length of the java file.
* @param encoding - the encoding of the source, if there is one.
* @return the array character of the java source.
* @throws java.io.IOException - exceptional error can be thrown during the reading of the file.
*/
public static char[] getJavaSourceFromTheInputStream( InputStream inputStream,
long length,
String encoding ) throws IOException {
return Util.getInputStreamAsCharArray(inputStream, (int)length, encoding);
}
/**
* Get the fully qualified name from the <code>Name</code>.
*
* @param name - the name to process.
* @return a FQN of the name.
*/
public static String getName( Name name ) {
CheckArg.isNotNull(name, "name");
return name.getFullyQualifiedName();
}
public static String expressionString( Expression expression ) {
if (expression instanceof StringLiteral) {
return ((StringLiteral)expression).getLiteralValue();
}
return expression.toString();
}
// prevent construction
private JavaMetadataUtil() {
}
}