Added Mnetwork download mirror.

URL: http://osu.uu.gl/

Note that there's no API available, so this just parses the HTML for beatmap data.  It's pretty slow compared to the other servers.

Signed-off-by: Jeffrey Han <itdelatrisu@gmail.com>

src/itdelatrisu/opsu/downloads/servers/MnetworkServer.java

@@ -0,0 +1,133 @@
+/*
+ * opsu! - an open-source osu! client
+ * Copyright (C) 2014, 2015 Jeffrey Han
+ *
+ * opsu! 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.
+ *
+ * opsu! 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 opsu!.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package itdelatrisu.opsu.downloads.servers;
+
+import itdelatrisu.opsu.ErrorHandler;
+import itdelatrisu.opsu.Utils;
+import itdelatrisu.opsu.downloads.DownloadNode;
+
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLEncoder;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * Download server: http://osu.uu.gl/
+ */
+public class MnetworkServer extends DownloadServer {
+	/** Server name. */
+	private static final String SERVER_NAME = "Mnetwork";
+
+	/** Formatted download URL: {@code beatmapSetID} */
+	private static final String DOWNLOAD_URL = "http://osu.uu.gl/s/%d";
+
+	/** Formatted search URL: {@code query} */
+	private static final String SEARCH_URL = "http://osu.uu.gl/d/%s";
+
+	/** Total result count from the last query. */
+	private int totalResults = -1;
+
+	/** Beatmap pattern. */
+	private Pattern BEATMAP_PATTERN = Pattern.compile("^(\\d+) ([^-]+) - (.+)\\.osz$");
+
+	/** Constructor. */
+	public MnetworkServer() {}
+
+	@Override
+	public String getName() { return SERVER_NAME; }
+
+	@Override
+	public String getDownloadURL(int beatmapSetID) {
+		return String.format(DOWNLOAD_URL, beatmapSetID);
+	}
+
+	@Override
+	public DownloadNode[] resultList(String query, int page, boolean rankedOnly) throws IOException {
+		DownloadNode[] nodes = null;
+		try {
+			// read HTML
+			String queryString = (query.isEmpty()) ? "-" : query;
+			String search = String.format(SEARCH_URL, URLEncoder.encode(queryString, "UTF-8"));
+			String html = Utils.readDataFromUrl(new URL(search));
+			if (html == null) {
+				this.totalResults = -1;
+				return null;
+			}
+
+			// parse results
+			// NOTE: Not using a full HTML parser because this is a relatively simple operation.
+			// FORMAT:
+			//   <div class="tr_title">
+			//   <b><a href='/s/{{id}}'>{{id}} {{artist}} - {{title}}.osz</a></b><br />
+			//   BPM: {{bpm}} <b>|</b> Total Time: {{m}}:{{s}}<br/>
+			//   Genre: {{genre}} <b>|</b> Updated: {{MMM}} {{d}}, {{yyyy}}<br />
+			List<DownloadNode> nodeList = new ArrayList<DownloadNode>();
+			final String START_TAG = "<div class=\"tr_title\">", HREF_TAG = "<a href=", UPDATED = "Updated: ";
+			int index = -1;
+			int nextIndex = html.indexOf(START_TAG, index + 1);
+			while ((index = nextIndex) != -1) {
+				nextIndex = html.indexOf(START_TAG, index + 1);
+				int n = (nextIndex == -1) ? html.length() : nextIndex;
+				int i, j;
+
+				// find beatmap
+				i = html.indexOf(HREF_TAG, index + START_TAG.length());
+				if (i == -1 || i > n) continue;
+				i = html.indexOf('>', i + HREF_TAG.length());
+				if (i == -1 || i >= n) continue;
+				j = html.indexOf('<', i + 1);
+				if (j == -1 || j > n) continue;
+				String beatmap = html.substring(i + 1, j).trim();
+
+				// find date
+				i = html.indexOf(UPDATED, j);
+				if (i == -1 || i >= n) continue;
+				j = html.indexOf('<', i + UPDATED.length());
+				if (j == -1 || j > n) continue;
+				String date = html.substring(i + UPDATED.length(), j).trim();
+
+				// parse id, title, and artist
+				Matcher m = BEATMAP_PATTERN.matcher(beatmap);
+				if (!m.matches())
+					continue;
+
+				nodeList.add(new DownloadNode(Integer.parseInt(m.group(1)), date, m.group(3), null, m.group(2), null, ""));
+			}
+
+			nodes = nodeList.toArray(new DownloadNode[nodeList.size()]);
+
+			// store total result count
+			this.totalResults = nodes.length;
+		} catch (MalformedURLException | UnsupportedEncodingException e) {
+			ErrorHandler.error(String.format("Problem loading result list for query '%s'.", query), e, true);
+		}
+		return nodes;
+	}
+
+	@Override
+	public int minQueryLength() { return 0; }
+
+	@Override
+	public int totalResults() { return totalResults; }
+}

src/itdelatrisu/opsu/states/DownloadsMenu.java

@@ -35,6 +35,7 @@
 import itdelatrisu.opsu.downloads.servers.BloodcatServer;
 import itdelatrisu.opsu.downloads.servers.DownloadServer;
 import itdelatrisu.opsu.downloads.servers.HexideServer;
+import itdelatrisu.opsu.downloads.servers.MnetworkServer;
 import itdelatrisu.opsu.downloads.servers.YaSOnlineServer;
 import itdelatrisu.opsu.ui.MenuButton;
 import itdelatrisu.opsu.ui.UI;
@@ -74,7 +75,9 @@ public class DownloadsMenu extends BasicGameState {
 	private static final int MIN_REQUEST_INTERVAL = 300;
 
 	/** Available beatmap download servers. */
-	private static final DownloadServer[] SERVERS = { new BloodcatServer(), new HexideServer(), new YaSOnlineServer() };
+	private static final DownloadServer[] SERVERS = {
+		new BloodcatServer(), new HexideServer(), new YaSOnlineServer(), new MnetworkServer()
+	};
 
 	/** The beatmap download server index. */
 	private int serverIndex = 0;