Bug 4922 [EditorMgmt] Need ability to open a file in eclipse from the command line
We need to be able to register eclipse as the default editor for a file type with the OS. This will allow double clicking on a file and opening it in eclipse. This is important for being able to view a .java file in a zip etc. I don't think it should be a problem to get the file name from the command line through to the workbech application which will be able to determine what editor to use. The question is where to put it in the workspace. I think the easiest answer is to just create a "miscellaneous" project mapped to the file's location. Remember this is not a project for "real work", its just a way of allowing the file to be viewed/edited using an eclipse editor.
bundles/org.eclipse.ui.ide.application/src/org/eclipse/ui/internal/ide/application/IDEApplication.java
} finally {
            try {
                if (output != null) {
					output.close();
				}
            } catch (IOException e) {
                
            }
        }
    }
    /**
     * The version file is stored in the metadata area of the workspace. This
     * method returns an URL to the file or null if the directory or file does
     * not exist (and the create parameter is false).
     * 
     * @param create
     *            If the directory and file does not exist this parameter
     *            controls whether it will be created.
     * @return An url to the file or null if the version file does not exist or
     *         could not be created.
     */
    private static File getVersionFile(URL workspaceUrl, boolean create) {
        if (workspaceUrl == null) {
			return null;
		}
        try {
            
            File metaDir = new File(workspaceUrl.getPath(), METADATA_FOLDER);
            if (!metaDir.exists() && (!create || !metaDir.mkdir())) {
				return null;