externallauncher.java

编辑视频文件

                    if (videoString != null) {
                        mediaFiles.add(absolutePath(IMDIString, videoString));
                    }

                    if (audioString != null) {
                        mediaFiles.add(absolutePath(IMDIString, audioString));
                    }

                    //new ElanFrame2(eafString, mediaFiles);
                    FrameManager.getInstance().createFrame(eafString, mediaFiles);
                }
            }
        }
    }

    /**
     * Convert a path to a file URL string. Takes care of Samba related problems
     * file:///path works for all files except for samba file systems, there we need file://machine/path,
     * i.e. 2 slashes instead of 3
     *
     * What's with relative paths?
     */
    private static String pathToURLString(String path) {
        // replace all back slashes by forward slashes
        String pathURL = path.replace('\\', '/');

        boolean isFileURL = pathURL.startsWith("file:");

        if (isFileURL) {
            pathURL = pathURL.substring(5);

            // remove leading slashes and count them
            int n = 0;

            while (pathURL.charAt(0) == '/') {
                pathURL = pathURL.substring(1);
                n++;
            }

            // add the file:// or file:/// prefix
            if (n == 2) {
                if (pathURL.charAt(1) == ':') {
                    // local drive
                    return "file:///" + pathURL;
                } else {
                    // samba share
                    return "file://" + pathURL;
                }
            } else {
                return "file:///" + pathURL;
            }
        } else {
            // this can still be a local file...
            return pathURL;
        }
    }

    /**
     * Creates an absolute path for a file.
     * If the file name is not an absolute path, an absolute path is created
     * by resolving from the base document's path.
     *
     * @param fromDoc the base file
     * @param fileName the file to create an absolute path for
     * @return an absolute path as a String, or null
     */
    private static String absolutePath(String fromDoc, String fileName) {
        if (fileName == null) {
            return null;
        }

        fileName = fileName.replace('\\', '/');

        URI fileUri = null;

        try {
            fileUri = new URI(fileName);

            if (fileUri.isAbsolute()) {
                String resString = fileUri.toString();

                if (resString.startsWith("file:") ||
                        resString.startsWith("//")) {
                    return fileUri.getSchemeSpecificPart();
                } else {
                    return resString;
                }
            } else {
                if (fromDoc == null) {
                    // give it a try
                    return fileUri.getSchemeSpecificPart();
                } else {
                    URI baseUri = null;

                    try {
                        baseUri = new URI(fromDoc);
                        fileUri = new URI(stripLeadingSlashes(fileName));

                        URI resolved = baseUri.resolve(fileUri.getSchemeSpecificPart());

                        //stripLeadingSlashes(fileUri.getSchemeSpecificPart()));
                        String resString = resolved.toString();

                        if (resString.startsWith("file:") ||
                                resString.startsWith("//")) {
                            return resolved.getSchemeSpecificPart();
                        } else {
                            return resString;
                        }
                    } catch (URISyntaxException ue) {
                        LOG.warning("URI: no context for relative file path\n" +
                            LogUtil.formatStackTrace(ue));

                        return fileUri.getSchemeSpecificPart();
                    }
                }
            }
        } catch (URISyntaxException ue) {
            LOG.warning("URI: invalid file path\n" +
                LogUtil.formatStackTrace(ue));
        }

        return null;
    }

    /**
     * Strip leading forward slashes from relative paths.
     * @param in the path
     * @return the stripped path, or null
     */
    private static String stripLeadingSlashes(String in) {
        if (in == null) {
            return null;
        }

        String strip = in;

        while (strip.charAt(0) == '/') {
            strip = strip.substring(1);
        }

        return strip;
    }

    /**
     * Shows a warning/error dialog with the specified message string.
     *
     * @param message the message to display
     */
    private static void showWarningDialog(String message) {
        JOptionPane.showMessageDialog(null, message, "Warning",
            JOptionPane.WARNING_MESSAGE);
    }

    /**
     * Makes sure the listener thread is stopped. Clean up by calling stop()
     *
     * @see #stop()
     */
    public void finalize() {
        ExternalLauncher.stop();
    }

    /**
     * A thread that periodically checks for changes in an exchange file.
     *
     * @author Han Sloetjes
     * @version 1.0
     */
    private static class LaunchThread extends Thread {
        private int delay;

        /**
         * Creates a new LaunchThread instance
         *
         * @param delay the delay period
         */
        LaunchThread(int delay) {
            this.delay = delay;
        }

        /**
         * Implements Runnable run method.
         */
        public void run() {
            while (running) {
                ExternalLauncher.checkChange();

                try {
                    sleep(delay);
                } catch (InterruptedException ie) {
                    LOG.info("Launch thread interrupted...");
                }
            }
        }
    }

    /**
     * Test thread.
     *
     * @author Han Sloetjes
     * @version 1.0
     */
    private static class TestLauncher extends Thread {
        /** Holds value of property number of test runs */
        final int num = 1;

        /**
         * Implements Runnable run method.
         */
        public void run() {
            int i = 0;

            while (i < num) {
                try {
                    sleep(5000);
                } catch (InterruptedException ie) {
                    ie.printStackTrace();
                }

                try {
                    File launchFl = new File(Constants.ELAN_DATA_DIR,
                            exchangeFile);

                    if (!launchFl.exists()) {
                        boolean success = launchFl.createNewFile();

                        if (!success) {
                            LOG.severe("Could not create file: " +
                                launchFl.getAbsolutePath());

                            return;
                        }
                    }

                    FileWriter writer = new FileWriter(launchFl);
                    writer.write(
                        "IMDI_Session: file:/D:/Dev_MPI/resources/testdata/elan/test.imdi");

                    //writer.write(
                    //   "IMDI_Session: //Nt04/users1/hasloe/test.imdi");
                    //writer.write( "IMDI_Session: C:/tmp/test.imdi");
                    writer.close();
                } catch (IOException ioe) {
                    ioe.printStackTrace();
                } catch (Exception e) {
                    e.printStackTrace();
                }

                i++;
            }
        }
    }
}