/*
* Copyright (C) 2007 Rob Manning
* manningr@users.sourceforge.net
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package net.sourceforge.squirrel_sql.client.plugin;
import java.io.File;
import java.io.IOException;
import net.sourceforge.squirrel_sql.fw.util.log.ILogger;
import net.sourceforge.squirrel_sql.fw.util.log.LoggerController;
public class PreferenceUtil {
/** Logger for this class. */
private final static ILogger s_log =
LoggerController.createLogger(PreferenceUtil.class);
/** Name of preferences file. */
private static final String USER_PREFS_FILE_NAME = "prefs.xml";
/**
* Check to see if the user wants to migrate previous settings. If yes, then
* then oldSQuirreLInstallDir contains the user's latest settings so prefer
* that one, unless the user settings directory has a file that is newer.
* @return
*/
public static File getPreferenceFileToReadFrom(IPlugin p) throws IOException {
File userSettingsFolder = p.getPluginUserSettingsFolder();
final File newUserPreferenceFile =
new File(userSettingsFolder, USER_PREFS_FILE_NAME);
File result = newUserPreferenceFile;
String migratePrefsProperty =
System.getProperty("migratePreferences", "false");
if (migratePrefsProperty != null
&& migratePrefsProperty.equalsIgnoreCase("true"))
{
String oldSquirrelLocation =
System.getProperty("oldSQuirreLInstallDir");
if (oldSquirrelLocation == null || oldSquirrelLocation.equals("")) {
throw new IllegalStateException(
"migratePreferences was set to true, but " +
"oldSQuirreLInstallDir wasn't set.");
}
final File oldAppPreferenceFile =
new File(oldSquirrelLocation + File.separator + "plugins" +
File.separator + p.getInternalName() +
File.separator + USER_PREFS_FILE_NAME);
// if the old preference file exists and is newer than the
// newUserPreference file, then use it for reading preferences
if (oldAppPreferenceFile.exists()) {
if (oldAppPreferenceFile.lastModified() >
newUserPreferenceFile.lastModified())
{
result = oldAppPreferenceFile;
s_log.info("-DmigratePreferences was specified; using "+
oldAppPreferenceFile.getAbsolutePath()+
" as the source for preferences - will save " +
"them to "+newUserPreferenceFile.getAbsolutePath());
} else {
s_log.info("-DmigratePreferences was specified, but file "+
newUserPreferenceFile.getAbsolutePath()+ " is newer " +
"than "+oldAppPreferenceFile.getAbsolutePath() +
": migration will be skipped");
}
} else {
s_log.info("-DmigratePreferences was specified, but file " +
oldAppPreferenceFile.getAbsolutePath()+" does not " +
"exist! Please remove -DmigratePreferences from the " +
"launch script, or fix -DoldSquirrelLocation to " +
"point to a valid previous SQuirreL installation " +
"directory");
}
}
return result;
}
}