Method contentsToClassPath

app/src/processing/app/Util.java:468–500

Given a folder, return a list of absolute paths to all jar or zip files inside that folder, separated by pathSeparatorChar. This will prepend a colon (or whatever the path separator is) so that it can be directly appended to another path string. As of 0136, this will no longer add the root folder

(File folder)

   * files in the folder or within a subfolder.
   */
  static public String contentsToClassPath(File folder) {
    if (folder == null) return "";

    StringBuilder sb = new StringBuilder();
    String sep = System.getProperty("path.separator");

    try {
      String path = folder.getCanonicalPath();

      // When getting the name of this folder, make sure it has a slash
      // after it, so that the names of sub-items can be added.
      if (!path.endsWith(File.separator)) {
        path += File.separator;
      }

      String list[] = folder.list();
      for (int i = 0; i < list.length; i++) {
        // Skip . and ._ files. Prior to 0125p3, .jar files that had
        // OS X AppleDouble files associated would cause trouble.
        if (list[i].startsWith(".")) continue;

        if (list[i].toLowerCase().endsWith(".jar") ||
            list[i].toLowerCase().endsWith(".zip")) {
          sb.append(sep);
          sb.append(path);
          sb.append(list[i]);
        }
      }
    } catch (IOException e) {
      e.printStackTrace();  // this would be odd
    }
    return sb.toString();
  }


  /**