XslpLiaison


1   /*
2    * Copyright  2000-2002,2004 The Apache Software Foundation
3    *
4    *  Licensed under the Apache License, Version 2.0 (the "License");
5    *  you may not use this file except in compliance with the License.
6    *  You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   *  Unless required by applicable law or agreed to in writing, software
11   *  distributed under the License is distributed on an "AS IS" BASIS,
12   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   *  See the License for the specific language governing permissions and
14   *  limitations under the License.
15   *
16   */
17  
18  package org.apache.tools.ant.taskdefs.optional;
19  
20  import com.kvisco.xsl.XSLProcessor;
21  import com.kvisco.xsl.XSLReader;
22  import com.kvisco.xsl.XSLStylesheet;
23  import java.io.File  ;
24  import java.io.FileOutputStream  ;
25  import java.io.OutputStreamWriter  ;
26  import org.apache.tools.ant.taskdefs.XSLTLiaison;
27  
28  /**
29   * Concrete liaison for XSLP
30   *
31   * @since Ant 1.1
32   */
33  public class XslpLiaison implements XSLTLiaison {
34  
35      protected XSLProcessor processor;
36      protected XSLStylesheet xslSheet;
37  
38      public XslpLiaison() {
39          processor = new XSLProcessor();
40          // uh ?! I'm forced to do that otherwise a setProperty crashes
41          // with NPE !  I don't understand why the property map is static
42          // though...  how can we do multithreading w/ multiple identical
43          // parameters ?
44          processor.getProperty("dummy-to-init-properties-map");
45      }
46  
47      public void setStylesheet(File   fileName) throws Exception   {
48          XSLReader xslReader = new XSLReader();
49          // a file:/// + getAbsolutePath() does not work here
50          // it is really the pathname
51          xslSheet = xslReader.read(fileName.getAbsolutePath());
52      }
53  
54      public void transform(File   infile, File   outfile) throws Exception   {
55          FileOutputStream   fos = new FileOutputStream  (outfile);
56          // XSLP does not support encoding...we're in hot water.
57          OutputStreamWriter   out = new OutputStreamWriter  (fos, "UTF8");
58          processor.process(infile.getAbsolutePath(), xslSheet, out);
59      }
60  
61      public void addParam(String   name, String   expression) {
62          processor.setProperty(name, expression);
63      }
64  
65  } //-- XSLPLiaison
66
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