Java tutorial
/** * Copyright (C) 2005 - 2014 Eric Van Dewoestine * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.eclim.plugin.core.command.admin; import java.io.File; import java.io.FileReader; import java.util.ArrayList; import java.util.Map; import org.eclim.Services; import org.eclim.annotation.Command; import org.eclim.command.CommandLine; import org.eclim.command.Error; import org.eclim.command.Options; import org.eclim.logging.Logger; import org.eclim.plugin.core.command.AbstractCommand; import org.eclim.plugin.core.preference.Preferences; import org.eclim.util.IOUtils; import com.google.gson.JsonElement; import com.google.gson.JsonObject; import com.google.gson.JsonStreamParser; /** * Command to update global settings. * * @author Eric Van Dewoestine */ @Command(name = "settings_update", options = "OPTIONAL s settings ARG") public class SettingsUpdateCommand extends AbstractCommand { private static final Logger logger = Logger.getLogger(SettingsUpdateCommand.class); @Override public Object execute(CommandLine commandLine) throws Exception { String settings = commandLine.getValue(Options.SETTINGS_OPTION); FileReader in = null; File file = new File(settings); ArrayList<Error> errors = new ArrayList<Error>(); try { in = new FileReader(file); JsonStreamParser parser = new JsonStreamParser(in); JsonObject obj = (JsonObject) parser.next(); Preferences preferences = getPreferences(); for (Map.Entry<String, JsonElement> entry : obj.entrySet()) { String name = entry.getKey(); String value = entry.getValue().getAsString(); try { preferences.setValue(name, value); } catch (IllegalArgumentException iae) { errors.add(new Error(iae.getMessage(), null, 0, 0)); } } } finally { IOUtils.closeQuietly(in); try { file.delete(); } catch (Exception e) { logger.warn("Error deleting settings temp file: " + file, e); } } if (errors.size() > 0) { return errors; } return Services.getMessage("settings.updated"); } }