Version updater code.

This commit is contained in:
NuclearW 2011-07-21 20:53:16 -04:00
parent 9da14a9163
commit a0be77fe4f

View File

@ -16,11 +16,16 @@ import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.Material;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
@ -59,6 +64,7 @@ public class mcMMO extends JavaPlugin
public static String maindirectory = "plugins" + File.separator + "mcMMO";
File file = new File(maindirectory + File.separator + "config.yml");
static File versionFile = new File(maindirectory + File.separator + "VERSION");
public static final Logger log = Logger.getLogger("Minecraft");
private final mcPlayerListener playerListener = new mcPlayerListener(this);
private final mcBlockListener blockListener = new mcBlockListener(this);
@ -81,6 +87,20 @@ public class mcMMO extends JavaPlugin
{
new File(maindirectory).mkdir();
if(!versionFile.exists()) {
updateVersion();
} else {
String vnum = readVersion();
//This will be changed to whatever version preceded when we actually need updater code.
//Version 1.0.48 is the first to implement this, no checking before that version can be done.
if(vnum.equalsIgnoreCase("1.0.48")) {
updateFrom(1);
}
//Just add in more else if blocks for versions that need updater code. Increment the updateFrom age int as we do so.
//Catch all for versions not matching and no specific code being needed
else if(!vnum.equalsIgnoreCase(this.getDescription().getVersion())) updateFrom(-1);
}
mcPermissions.initialize(getServer());
config.configCheck();
@ -1437,6 +1457,60 @@ public class mcMMO extends JavaPlugin
return false;
}
/*
* It is important to always assume that you are updating from the lowest possible version.
* Thus, every block of updater code should be complete and self-contained; finishing all
* SQL transactions and closing all file handlers, such that the next block of updater code
* if called will handle updating as expected.
*/
public void updateFrom(int age) {
//No updater code needed, just update the version.
if(age == -1) {
updateVersion();
return;
}
//Updater code from age 1 goes here
if(age <= 1) {
//Since age 1 is an example for now, we will just let it do nothing.
}
//If we are updating from age 1 but we need more to reach age 2, this will run too.
if(age <= 2) {
}
updateVersion();
}
public void updateVersion() {
try {
versionFile.createNewFile();
BufferedWriter vout = new BufferedWriter(new FileWriter(versionFile));
vout.write(this.getDescription().getVersion());
vout.close();
} catch (IOException ex) {
ex.printStackTrace();
} catch (SecurityException ex) {
ex.printStackTrace();
}
}
public String readVersion() {
byte[] buffer = new byte[(int) versionFile.length()];
BufferedInputStream f = null;
try {
f = new BufferedInputStream(new FileInputStream(versionFile));
f.read(buffer);
} catch (FileNotFoundException ex) {
ex.printStackTrace();
} catch (IOException ex) {
ex.printStackTrace();
} finally {
if (f != null) try { f.close(); } catch (IOException ignored) { }
}
return new String(buffer);
}
public Player getPlayer(String playerName){
for(Player herp : getPlayersOnline()){
if(herp.getName().toLowerCase().equals(playerName.toLowerCase())){