ClassListToFileList


1   /*
2    * All content copyright (c) 2003-2007 Terracotta, Inc., except as may otherwise be noted in a separate copyright
3    * notice. All rights reserved.
4    */
5   package com.tc.util;
6   
7   import java.io.File  ;
8   import java.io.FileNotFoundException  ;
9   import java.net.URL  ;
10  import java.util.ArrayList  ;
11  import java.util.List  ;
12  import java.util.regex.Pattern  ;
13  
14  /**
15   * Translates an array of Class objects to an array of File objects. NOTE: This class only supports a single level of
16   * nested inner classes, i.e. no innerclass of an innerclass
17   */
18  public final class ClassListToFileList {
19  
20    /**
21     * @return [0][] is a list of absolute file paths, [1][] is a list of relative paths starting at the package name
22     *         (com)
23     */
24    public static File  [][] translate(Class  [] classes) throws FileNotFoundException   {
25      List   files = new ArrayList  ();
26      List   relativeFiles = new ArrayList  ();
27      File   file;
28      File   relativeFile;
29      File   inner;
30      int offset;
31      for (int i = 0; i < classes.length; i++) {
32        relativeFile = new File  (classes[i].getName().replaceAll("\\.", "/") + ".class");
33        relativeFiles.add(relativeFile);
34        String  [] parts = classes[i].getName().split("\\.");
35        URL   url = classes[i].getResource(parts[parts.length - 1] + ".class");
36        file = new File  (url.getPath());
37        files.add(file);
38        offset = file.toString().length() - relativeFile.toString().length();
39        if (!file.exists()) throw new FileNotFoundException  ("Unable to resolve class file location for: " + classes[i]);
40        String  [] packageFiles = file.getParentFile().list();
41        for (int j = 0; j < packageFiles.length; j++) {
42          if (Pattern.matches(file.getName().replaceFirst("\\.class", "") + "(\\$.*)\\.class", packageFiles[j])) {
43            inner = new File  (file.getParent() + File.separator + packageFiles[j]);
44            files.add(inner);
45            relativeFiles.add(new File  (inner.toString().substring(offset)));
46          }
47        }
48      }
49      File  [][] retVal = new File  [2][];
50      retVal[0] = (File  []) files.toArray(new File  [0]);
51      retVal[1] = (File  []) relativeFiles.toArray(new File  [0]);
52      return retVal;
53    }
54  }
55
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