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    1   /*
    2    * $Id: WritableFile.java,v 1.6 2006/06/09 11:22:20 dierk Exp $
    3    *
    4    * Copyright 2003 (C) John Wilson. All Rights Reserved.
    5    *
    6    * Redistribution and use of this software and associated documentation
    7    * ("Software"), with or without modification, are permitted provided that the
    8    * following conditions are met:
    9    *  1. Redistributions of source code must retain copyright statements and
    10   * notices. Redistributions must also contain a copy of this document.
    11   *  2. Redistributions in binary form must reproduce the above copyright
    12   * notice, this list of conditions and the following disclaimer in the
    13   * documentation and/or other materials provided with the distribution.
    14   *  3. The name "groovy" must not be used to endorse or promote products
    15   * derived from this Software without prior written permission of The Codehaus.
    16   * For written permission, please contact info@codehaus.org.
    17   *  4. Products derived from this Software may not be called "groovy" nor may
    18   * "groovy" appear in their names without prior written permission of The
    19   * Codehaus. "groovy" is a registered trademark of The Codehaus.
    20   *  5. Due credit should be given to The Codehaus - http://groovy.codehaus.org/
    21   *
    22   * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY
    23   * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    24   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    25   * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR
    26   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    27   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    28   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    29   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    30   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    31   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
    32   * DAMAGE.
    33   *
    34   */
    35
    36  package org.codehaus.groovy.runtime;
    37
    38  import groovy.lang.Writable;
    39
    40  import java.io.File;
    41  import java.io.IOException;
    42  import java.io.Reader;
    43  import java.io.Writer;
    44
    45  /***
    46   * A Writable File.
    47   *
    48   * @author John Wilson
    49   *
    50   */
    51  public class WritableFile extends File implements Writable {
    52      private final String encoding;
    53
    54      public WritableFile(final File delegate) {
    55          this(delegate, null);
    56      }
    57
    58      public WritableFile(final File delegate, final String encoding) {
    59          super(delegate.toURI());
    60          this.encoding = encoding;
    61      }
    62
    63      public Writer writeTo(final Writer out) throws IOException {
    64          final Reader reader =
    65              (this.encoding == null)
    66                  ? DefaultGroovyMethods.newReader(this)
    67                  : DefaultGroovyMethods.newReader(this, this.encoding);
    68
    69          try {
    70              int c = reader.read();
    71
    72              while (c != -1) {
    73                  out.write(c);
    74                  c = reader.read();
    75              }
    76          }
    77          finally {
    78              reader.close();
    79          }
    80          return out;
    81      }
    82  }