Minor changes to the contrib manager

add --list-contribs option
construct sys.argv correctly for the contrib scripts

contribManager.py

@@ -5,6 +5,8 @@
 
 import sys
 import os.path
+sys.path.append("overviewer_core")
+import nbt
 
 scripts=dict( # keys are names, values are scripts
         benchmark="benchmark.py",
@@ -12,6 +14,12 @@ scripts=dict( # keys are names, values are scripts
         validate="validateRegionFile.py"
         )
 
+# you can symlink or hardlink contribManager.py to another name to have it
+# automatically find the right script to run.  For example:
+# > ln -s contribManager.py validate.exe
+# > chmod +x validate.exe
+# > ./validate.exe -h
+
 
 # figure out what script to execute
 argv=os.path.basename(sys.argv[0])
@@ -21,18 +29,26 @@ if argv[-4:] == ".exe":
 if argv[-3:] == ".py":
     argv=argv[0:-3]
 
-print "argv is ", argv
-
 if argv in scripts.keys():
     script = scripts[argv]
+    sys.argv[0] = script
 else:
-    if sys.argv[1] in scripts.keys():
+    if "--list-contribs" in sys.argv:
+        print scripts.keys()
+        sys.exit(0)
+    if len(sys.argv) > 1 and sys.argv[1] in scripts.keys():
         script = scripts[sys.argv[1]]
+        sys.argv = [script] + sys.argv[2:]
     else:
         print "what do you want to run?"
         sys.exit(1)
 
 
-print "running", script
+torun = os.path.join("contrib", script)
+
+if not os.path.exists(torun):
+    print "Script '%s' is missing!" % script
+    sys.exit(1)
+
+execfile(torun)
 
-execfile(os.path.join("contrib", script))