/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2008 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.codemodel;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.nio.charset.CharsetEncoder;
import com.sun.codemodel.util.EncoderFactory;
import com.sun.codemodel.util.UnicodeEscapeWriter;
/**
* Receives generated code and writes to the appropriate storage.
*
* @author
* Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
*/
public abstract class CodeWriter {
/**
* Called by CodeModel to store the specified file.
* The callee must allocate a storage to store the specified file.
*
* <p>
* The returned stream will be closed before the next file is
* stored. So the callee can assume that only one OutputStream
* is active at any given time.
*
* @param pkg
* The package of the file to be written.
* @param fileName
* File name without the path. Something like
* "Foo.java" or "Bar.properties"
*/
public abstract OutputStream openBinary( JPackage pkg, String fileName ) throws IOException;
/**
* Called by CodeModel to store the specified file.
* The callee must allocate a storage to store the specified file.
*
* <p>
* The returned stream will be closed before the next file is
* stored. So the callee can assume that only one OutputStream
* is active at any given time.
*
* @param pkg
* The package of the file to be written.
* @param fileName
* File name without the path. Something like
* "Foo.java" or "Bar.properties"
*/
public Writer openSource( JPackage pkg, String fileName ) throws IOException {
final OutputStreamWriter bw = new OutputStreamWriter(openBinary(pkg,fileName));
// create writer
try {
return new UnicodeEscapeWriter(bw) {
// can't change this signature to Encoder because
// we can't have Encoder in method signature
private final CharsetEncoder encoder = EncoderFactory.createEncoder(bw.getEncoding());
protected boolean requireEscaping(int ch) {
// control characters
if( ch<0x20 && " \t\r\n".indexOf(ch)==-1 ) return true;
// check ASCII chars, for better performance
if( ch<0x80 ) return false;
return !encoder.canEncode((char)ch);
}
};
} catch( Throwable t ) {
return new UnicodeEscapeWriter(bw);
}
}
/**
* Called by CodeModel at the end of the process.
*/
public abstract void close() throws IOException;
}