Description Darrell Loverin 2004-04-07 17:10:54 EDT

I needed to do load a file from the save state location or the plugin 
installation location the same as AbstractUIPlugin does for its 
dialog_settings.xml in loadDialogSettings. I had to copy and modify the code 
for my use. I need a public method to perform this operation that will take a 
path name as an argument.

Here what my version of the code looks like:
	private void loadTableFormat(Table table) {
		// try r/w state area in the local file system
		if (ListViewerLogger.get().isTraceEntryExitEnabled()) {
			ListViewerLogger.get().traceEntry
(this, "loadTableFormat");
		}
		
		/* When read form the state location there is no formats 
directory. all the formats are in
		 * the plugin. Didn't what the hassle of creating the formats 
directory in the state location.
		 * Only the plugin will have the formats directory.
		 */
		String readPath = _plugin.getStateLocation().append
(getTableFormatFilename()).toOSString();
		File settingsFile = new File(readPath);
		if (settingsFile.exists()) {
			try {
				table.loadFormat(readPath);
			} catch (IOException e) {
				ListViewerLogger.get().fatal
("err.loading.table.format", 
						Situation.SITUATION_REQUEST, 
						new Object[] {readPath}, 
						(Throwable) e);
				return;
			}
		} else {
			// not found - use installed  defaults if available
			URL baseURL = _plugin.getDescriptor().getInstallURL();

			URL dsURL = null;
			try {
				dsURL = new URL(baseURL, getTableFormatPathname
());
			} catch (MalformedURLException e) {
				ListViewerLogger.get().fatal
("err.loading.table.format", 
						Situation.SITUATION_REQUEST, 
						new Object[] {dsURL}, 
						(Throwable) e);
				return;
			}
			InputStream is = null;
			try {
				is = dsURL.openStream();
				BufferedReader reader = new BufferedReader(new 
InputStreamReader(is, "utf-8")); //$NON-NLS-1$
				table.loadFormat(reader);
			} catch (IOException e) {
				// load failed so ensure we have an empty 
settings
				ListViewerLogger.get().fatal
("err.loading.table.format", 
						Situation.SITUATION_REQUEST, 
						new Object[] {dsURL}, 
						(Throwable) e);
				return;
			} finally {
				try {
					if (is != null)
						is.close();
				} catch (IOException e) {
					// not catching exception if we can't 
close 
					// the file.
				}
			}
		}
		
		if (ListViewerLogger.get().isTraceEntryExitEnabled()) {
			ListViewerLogger.get().traceExit
(this, "loadTableFormat");
		}
	}