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    1   /*
    2    * $Id: TemplateEngine.java,v 1.3 2004/04/19 07:29:43 cpoirier Exp $version Mar 8, 2004 2:08:49 AM $user Exp $
    3    *
    4    * Copyright 2003 (C) Sam Pullara. 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: 1. Redistributions of source code must retain
    9    * copyright statements and notices. Redistributions must also contain a copy
    10   * of this document. 2. Redistributions in binary form must reproduce the above
    11   * copyright notice, this list of conditions and the following disclaimer in
    12   * the documentation and/or other materials provided with the distribution. 3.
    13   * The name "groovy" must not be used to endorse or promote products derived
    14   * from this Software without prior written permission of The Codehaus. For
    15   * written permission, please contact info@codehaus.org. 4. Products derived
    16   * from this Software may not be called "groovy" nor may "groovy" appear in
    17   * their names without prior written permission of The Codehaus. "groovy" is a
    18   * registered trademark of The Codehaus. 5. Due credit should be given to The
    19   * Codehaus - http://groovy.codehaus.org/
    20   *
    21   * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY
    22   * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    23   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    24   * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR
    25   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    26   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    27   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    28   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    29   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    30   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
    31   * DAMAGE.
    32   *
    33   */
    34  package groovy.text;
    35
    36  import java.io.File;
    37  import java.io.FileNotFoundException;
    38  import java.io.FileReader;
    39  import java.io.IOException;
    40  import java.io.InputStreamReader;
    41  import java.io.Reader;
    42  import java.io.StringReader;
    43  import java.net.URL;
    44
    45  import org.codehaus.groovy.control.CompilationFailedException;
    46
    47  /***
    48   * Represents an API to any template engine which is basically a factory of Template instances from a given text input.
    49   *
    50   * @author sam
    51   */
    52  public abstract class TemplateEngine {
    53      public abstract Template createTemplate(Reader reader) throws CompilationFailedException, ClassNotFoundException, IOException;
    54
    55      public Template createTemplate(String templateText) throws CompilationFailedException, FileNotFoundException, ClassNotFoundException, IOException {
    56          return createTemplate(new StringReader(templateText));
    57      }
    58
    59      public Template createTemplate(File file) throws CompilationFailedException, FileNotFoundException, ClassNotFoundException, IOException {
    60          return createTemplate(new FileReader(file));
    61      }
    62
    63      public Template createTemplate(URL url) throws CompilationFailedException, ClassNotFoundException, IOException {
    64          return createTemplate(new InputStreamReader(url.openStream()));
    65      }
    66  }