Some cleanup, refactoring of EssentialsHelp class

EssentialsUpdate/src/com/earth2me/essentials/update/chat/AbstractFileCommand.java

@@ -0,0 +1,68 @@
+package com.earth2me.essentials.update.chat;
+
+import com.earth2me.essentials.update.PastieUpload;
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.nio.charset.Charset;
+import org.bukkit.plugin.Plugin;
+
+
+public abstract class AbstractFileCommand implements Command
+{
+	private final transient Plugin plugin;
+	private final static Charset UTF8 = Charset.forName("utf-8");
+
+	public AbstractFileCommand(final Plugin plugin)
+	{
+		this.plugin = plugin;
+	}
+
+	protected BufferedReader getServerLogReader() throws IOException
+	{
+		final File bukkitFolder = plugin.getDataFolder().getAbsoluteFile().getParentFile().getParentFile();
+		if (bukkitFolder == null || !bukkitFolder.exists())
+		{
+			throw new IOException("Bukkit folder not found.");
+		}
+		final File logFile = new File(bukkitFolder, "server.log");
+		if (!logFile.exists())
+		{
+			throw new IOException("Server log not found.");
+		}
+		final FileInputStream fis = new FileInputStream(logFile);
+		if (logFile.length() > 1000000)
+		{
+			fis.skip(logFile.length() - 1000000);
+		}
+		return new BufferedReader(new InputStreamReader(fis));	
+	}
+	
+	protected BufferedReader getPluginConfig(final String pluginName, final String fileName) throws IOException
+	{
+		final File configFolder = new File(plugin.getDataFolder().getAbsoluteFile().getParentFile(), pluginName);
+			if (!configFolder.exists())
+			{
+				throw new IOException(pluginName+" plugin folder not found.");
+			}
+			final File configFile = new File(configFolder, fileName);
+			if (!configFile.exists())
+			{
+				throw new IOException(pluginName+" plugin file "+fileName+" not found.");
+			}
+			return new BufferedReader(new InputStreamReader(new FileInputStream(configFile), UTF8));
+			
+	}
+	
+	protected String uploadToPastie(final StringBuilder input) throws IOException
+	{
+		if (input.length() > 10000)
+		{
+			input.delete(0, input.length() - 10000);
+		}
+		final PastieUpload pastie = new PastieUpload();
+		return pastie.send(input.toString());
+	}
+}