001    /*
002     * $Id: WritableFile.java 3825 2006-06-09 11:22:20Z dierk $
003     *
004     * Copyright 2003 (C) John Wilson. All Rights Reserved.
005     *
006     * Redistribution and use of this software and associated documentation
007     * ("Software"), with or without modification, are permitted provided that the
008     * following conditions are met:
009     *  1. Redistributions of source code must retain copyright statements and
010     * notices. Redistributions must also contain a copy of this document.
011     *  2. Redistributions in binary form must reproduce the above copyright
012     * notice, this list of conditions and the following disclaimer in the
013     * documentation and/or other materials provided with the distribution.
014     *  3. The name "groovy" must not be used to endorse or promote products
015     * derived from this Software without prior written permission of The Codehaus.
016     * For written permission, please contact info@codehaus.org.
017     *  4. Products derived from this Software may not be called "groovy" nor may
018     * "groovy" appear in their names without prior written permission of The
019     * Codehaus. "groovy" is a registered trademark of The Codehaus.
020     *  5. Due credit should be given to The Codehaus - http://groovy.codehaus.org/
021     *
022     * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY
023     * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
024     * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
025     * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR
026     * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
027     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
028     * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
029     * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
030     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
031     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
032     * DAMAGE.
033     *
034     */
035    
036    package org.codehaus.groovy.runtime;
037    
038    import groovy.lang.Writable;
039    
040    import java.io.File;
041    import java.io.IOException;
042    import java.io.Reader;
043    import java.io.Writer;
044    
045    /**
046     * A Writable File.
047     *
048     * @author John Wilson
049     *
050     */
051    public class WritableFile extends File implements Writable {
052        private final String encoding;
053    
054        public WritableFile(final File delegate) {
055            this(delegate, null);
056        }
057    
058        public WritableFile(final File delegate, final String encoding) {
059            super(delegate.toURI());
060            this.encoding = encoding;
061        }
062    
063        public Writer writeTo(final Writer out) throws IOException {
064            final Reader reader =
065                (this.encoding == null)
066                    ? DefaultGroovyMethods.newReader(this)
067                    : DefaultGroovyMethods.newReader(this, this.encoding);
068    
069            try {
070                int c = reader.read();
071    
072                while (c != -1) {
073                    out.write(c);
074                    c = reader.read();
075                }
076            }
077            finally {
078                reader.close();
079            }
080            return out;
081        }
082    }