[wmlunits] Ignore addon unit levels < 0 or > 5.

Ignore addons with unhandled errors.

data/tools/unit_tree/html_output.py

@@ -236,6 +236,8 @@ class HTMLOutput:
             nodes.sort(by_name)
             for node in nodes:
                 level = node.unit.level
+                if level < 0: level = 0
+                if level > 5: level = 5
                 rows[x][level] = (1, node.breadth, node)
                 for i in range(1, node.breadth):
                     rows[x + i][level] = (0, 0, node)

data/tools/wmlunits

@@ -10,7 +10,7 @@ Run without arguments to see usage.
 try: import psyco; psyco.full()
 except ImportError: pass
   
-import sys, os, glob, shutil, urllib2, optparse
+import sys, os, glob, shutil, urllib2, optparse, traceback
 import subprocess, yaml
 
 import wesnoth.wmlparser2 as wmlparser2
@@ -309,6 +309,9 @@ def batch_process():
             ef.write(str(e))
             ef.close()
             print("    " + name + " failed")
+        except Exception as e:
+            traceback.print_exc()
+            print("    " + name + " failed")
         finally:
             if name != "mainline":
                 move(options.config_dir + "/data/add-ons", options.addons, name)