Fix invalid integers in spawnpoint command. Fixes BUKKIT-3509

getInteger returns min value on illegal number formats, so we change
behavior to throw an exception when requested.

By: feildmaster <admin@feildmaster.com>

paper-api/src/main/java/org/bukkit/command/defaults/SpawnpointCommand.java

@@ -47,9 +47,15 @@ public class SpawnpointCommand extends VanillaCommand {
         if (args.length == 4) {
             if (world != null) {
                 int pos = 1;
-                int x = getInteger(sender, args[pos++], MIN_COORD, MAX_COORD);
-                int y = getInteger(sender, args[pos++], 0, world.getMaxHeight());
-                int z = getInteger(sender, args[pos], MIN_COORD, MAX_COORD);
+                final int x, y, z;
+                try {
+                    x = getInteger(sender, args[pos++], MIN_COORD, MAX_COORD, true);
+                    y = getInteger(sender, args[pos++], 0, world.getMaxHeight());
+                    z = getInteger(sender, args[pos], MIN_COORD, MAX_COORD, true);
+                } catch(NumberFormatException ex) {
+                    sender.sendMessage(ex.getMessage());
+                    return true;
+                }
 
                 player.setBedSpawnLocation(new Location(world, x, y, z), true);
                 Command.broadcastCommandMessage(sender, "Set " + player.getDisplayName() + "'s spawnpoint to " + x + ", " + y + ", " + z);

paper-api/src/main/java/org/bukkit/command/defaults/VanillaCommand.java

@@ -26,12 +26,20 @@ public abstract class VanillaCommand extends Command {
         return getInteger(sender, value, min, Integer.MAX_VALUE);
     }
 
-    protected int getInteger(CommandSender sender, String value, int min, int max) {
+    int getInteger(CommandSender sender, String value, int min, int max) {
+        return getInteger(sender, value, min, max, false);
+    }
+
+    int getInteger(CommandSender sender, String value, int min, int max, boolean Throws) {
         int i = min;
 
         try {
             i = Integer.valueOf(value);
-        } catch (NumberFormatException ex) {}
+        } catch (NumberFormatException ex) {
+            if (Throws) {
+                throw new NumberFormatException(String.format("%s is not a valid number", value));
+            }
+        }
 
         if (i < min) {
             i = min;