Added EssentialsXMPP from newplugins branch.

Updated to work with trunk.

git-svn-id: https://svn.java.net/svn/essentials~svn/trunk@1564 e251c2fe-e539-e718-e476-b85c1f46cddb

EssentialsXMPP/src/com/earth2me/essentials/xmpp/UserManager.java

@@ -0,0 +1,78 @@
+package com.earth2me.essentials.xmpp;
+
+import com.earth2me.essentials.EssentialsConf;
+import com.earth2me.essentials.IConf;
+import java.io.File;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+
+public class UserManager implements IConf
+{
+	private final transient EssentialsConf users;
+	private final transient List<String> spyusers = new ArrayList<String>();
+	private final static String ADDRESS = "address";
+	private final static String SPY = "spy";
+
+	public UserManager(final File folder)
+	{
+		users = new EssentialsConf(new File(folder, "users.yml"));
+		reloadConfig();
+	}
+
+	public final boolean isSpy(final String username)
+	{
+		return users.getBoolean(username.toLowerCase() + "." + SPY, false);
+	}
+
+	public void setSpy(final String username, boolean spy) throws Exception
+	{
+		setUser(username.toLowerCase(), getAddress(username), spy);
+	}
+
+	public final String getAddress(final String username)
+	{
+		return users.getString(username.toLowerCase() + "." + ADDRESS, null);
+	}
+
+	public void setAddress(final String username, final String address) throws Exception
+	{
+		setUser(username.toLowerCase(), address, isSpy(username));
+	}
+
+	public List<String> getSpyUsers()
+	{
+		return spyusers;
+	}
+
+	private void setUser(String username, String address, boolean spy) throws Exception
+	{
+		final Map<String, Object> userdata = new HashMap<String, Object>();
+		userdata.put(ADDRESS, address);
+		userdata.put(SPY, spy);
+		users.setProperty(username, userdata);
+		users.save();
+		reloadConfig();
+	}
+
+	@Override
+	public final void reloadConfig()
+	{
+		users.load();
+		spyusers.clear();
+		final List<String> keys = users.getKeys(null);
+		for (String key : keys)
+		{
+			if (isSpy(key))
+			{
+				final String address = getAddress(key);
+				if (address != null)
+				{
+					spyusers.add(address);
+				}
+			}
+		}
+	}
+}