Java tutorial
/* * MPT (Map Packaging Tool) * * Copyright (c) 2014-2015 Maxim Roncac <mproncace@lapis.blue> * * The MIT License (MIT) * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package net.amigocraft.mpt.command; import static net.amigocraft.mpt.util.Config.*; import static net.amigocraft.mpt.util.MiscUtil.*; import net.amigocraft.mpt.Main; import net.amigocraft.mpt.util.MPTException; import net.amigocraft.mpt.util.MiscUtil; import org.bukkit.Bukkit; import org.bukkit.command.CommandSender; import org.json.simple.JSONObject; import java.io.*; import java.util.Map; import java.util.Set; public class AddRepositoryCommand extends SubcommandManager { public AddRepositoryCommand(CommandSender sender, String[] args) { super(sender, args); } @Override public void handle() { if (!checkPerms()) return; if (args.length == 2) { final String path = args[1]; // get the main array from the JSON object JSONObject repos = (JSONObject) Main.repoStore.get("repositories"); // verify the repo hasn't already been added Set<Map.Entry> entries = repos.entrySet(); for (Map.Entry e : entries) { // iterate repos in local store JSONObject o = (JSONObject) e.getValue(); // check URL if (o.containsKey("url") && o.get("url").toString().equalsIgnoreCase(path)) { sender.sendMessage(ERROR_COLOR + "[MPT] The repository at that URL has already been added!"); return; } } // no way we're making the main thread wait for us to open and read the stream Bukkit.getScheduler().runTaskAsynchronously(Main.plugin, new Runnable() { public void run() { try { threadSafeSendMessage(sender, INFO_COLOR + "[MPT] Attempting connection to repository..."); String id = addRepository(path); threadSafeSendMessage(sender, INFO_COLOR + "[MPT] Successfully added " + "repository under ID " + ID_COLOR + id + INFO_COLOR + " to local store! You may now use " + COMMAND_COLOR + "/mpt update" + INFO_COLOR + " to fetch available packages."); } catch (MPTException ex) { threadSafeSendMessage(sender, ERROR_COLOR + "[MPT] " + ex.getMessage()); } } }); } else if (args.length < 2) sender.sendMessage(ERROR_COLOR + "[MPT] Too few arguments! Type " + COMMAND_COLOR + "/mpt help " + ERROR_COLOR + "for help"); else sender.sendMessage(ERROR_COLOR + "[MPT] Too many arguments! Type " + COMMAND_COLOR + "/mpt help " + ERROR_COLOR + "for help"); } @SuppressWarnings("unchecked") public static String addRepository(String path) throws MPTException { if (Thread.currentThread().getId() == Main.mainThreadId) throw new MPTException(ERROR_COLOR + "Repositories may not be added from the main thread!"); try { JSONObject json = MiscUtil.getRemoteIndex(path); String id = json.get("id").toString().toLowerCase(); // get ID from remote File store = new File(Main.plugin.getDataFolder(), "repositories.json"); if (!store.exists()) Main.initializeRepoStore(store); // gotta initialize it before using it lockStores(); JSONObject repoElement = new JSONObject(); // create a new JSON object repoElement.put("url", path); // set the repo URL ((JSONObject) Main.repoStore.get("repositories")).put(id, repoElement); writeRepositoryStore(); unlockStores(); return id; // apt-get doesn't fetch packages when a repo is added, so I'm following that precedent } catch (IOException ex) { unlockStores(); throw new MPTException(ERROR_COLOR + "Failed to add repository to local " + "store!"); } } }