block.py: use logging to report issues

This way diagnostics are printed to stderr and can easilly be redirected to a
file. Additionally we can filter information and don#t need to comment print
statements.

block.py

@@ -4,6 +4,7 @@ import zlib
 import nbt
 import random
 import time
+import logging
 from io import BytesIO
 import sqlite3
 from serialize import *
@@ -11,6 +12,7 @@ from itemstack import *
 from tile_entities import te_convert
 from entities import e_convert
 
+logger = logging.getLogger('block')
 
 class MCMap:
     """A MC map"""
@@ -229,7 +231,7 @@ class MTBlock:
         self.pos = (0, 0, 0)
 
     def fromMCBlock(self, mcblock, conversion_table):
-#        print('\n***fromMCBlock: Starting New Block***')
+        logger.debug('***fromMCBlock: Starting New Block***')
 
         self.timers = []
         self.pos = (mcblock.pos[0], mcblock.pos[1]-4, mcblock.pos[2])
@@ -273,9 +275,9 @@ class MTBlock:
             elif isdoor(blocks[i]) and data[i] < 8:
                 above = i + 256
                 if (above >= 4096):
-                    print('Unable to fix door - top part is across block boundary!')
+                    logger.warning('Unable to fix door - top part is across block boundary! (%d >= 4096)' % above)
                 elif isdoor(blocks[above]) and data[above] < 7:
-                    print('Unable to fix door - bottom part on top of bottom part!')
+                    logger.warning('Unable to fix door - bottom part on top of bottom part!')
                 else:
                     d_right = data[above] & 1  # 0 - left, 1 - right
                     d_open = data[i] & 4       # 0 - closed, 1 - open
@@ -289,9 +291,9 @@ class MTBlock:
             elif isdoor(blocks[i]) and data[i] >= 8:
                 below = i - 256
                 if (below < 0):
-                    print('Unable to fix door - bottom part is across block boundary!')
+                    logger.warning('Unable to fix door - bottom part is across block boundary! (%d < 0)' % below)
                 elif isdoor(blocks[below]) and data[below] >= 8:
-                    print('Unable to fix door - top part below top part!')
+                    logger.warning('Unable to fix door - top part below top part!')
                 else:
                     d_right = data[i] & 1      # 0 - left, 1 - right
                     d_open = data[below] & 4   # 0 - closed, 1 - open
@@ -304,7 +306,7 @@ class MTBlock:
                         self.metadata[(i & 0xf, (i>>8) & 0xf, (i>>4) & 0xf)] = ({ "right": "1" }, {})
 
             elif content[i]==0 and param2[i]==0 and not (blocks[i]==0):
-                print('Unknown Minecraft Block:' + str(mcblockidentifier[i]))     # This is the minecraft ID#/data as listed in map_content.txt
+                logger.warning('Unknown Minecraft Block:' + str(mcblockidentifier[i]))     # This is the minecraft ID#/data as listed in map_content.txt
 
         for te in mcblock.tile_entities:
             id = te["id"]
@@ -312,8 +314,8 @@ class MTBlock:
             index = ((y&0xf)<<8)|((z&0xf)<<4)|(x&0xf)
             f = te_convert.get(id.lower(), lambda arg: (None, None, None)) # Do nothing if not found
             block, p2, meta = f(te)
-#            print('\nEntityInfoPre: ' +str(te))                                                         # EntityInfo: if you want to print pre-conversion entity information then uncomment this line
+            logger.debug('EntityInfoPre: ' +str(te))
-#            print('EntityInfoPost: ' +' y='+str(y)+' z='+str(z)+' x='+str(x)+' Meta:'+str(meta))        # EntityInfo: if you want to print post-conversion entity information then uncomment this line
+            logger.debug('EntityInfoPost: ' +' y='+str(y)+' z='+str(z)+' x='+str(x)+' Meta:'+str(meta))
             # NB block and p2 never seems to be returned, but if this is important, then just change the above 'meta' to 'f(te)'
 
             if block != None:
@@ -330,7 +332,7 @@ class MTBlock:
                         else:
                             content[above], param2[above] = conversion_table[940][p]
                     else:
-                        print("can't pot plant in pot across block border, or not air")
+                        logger.warning("can't pot plant in pot across block border, or not air")
                 except:
                     self.metadata[(x&0xf, y&0xf, z&0xf)] = meta
 
@@ -429,8 +431,8 @@ class MTBlock:
         # Node timer
         writeU8(os, 2+4+4) # Timer data len
         writeU16(os, len(self.timers)) # Number of timers
-        #if len(self.timers) > 0:
+        if len(self.timers) > 0:
-        #    print('wrote ' + str(len(self.timers)) + ' node timers')
+            logger.info('wrote ' + str(len(self.timers)) + ' node timers')
         for i in range(len(self.timers)):
             writeU16(os, self.timers[i][0])
             writeU32(os, self.timers[i][1])

entities.py

@@ -1,10 +1,15 @@
+import logging
 from itemstack import *
 #If you wish to add more entities, then...
-# To print out pre and post-conversion entity information uncomment line 237 (ish) in blocks.py (search for 'EntityInfo' to locate it)
+# To see pre and post-conversion entity, raise the log level to DEBUG and look
+# at the log output on stderr in category 'blocks' (search for 'EntityInfo' to
+# locate them)
+
+logger = logging.getLogger('entities')
 
 def convert_frame(e):
-    from pprint import pprint
+    from pprint import pformat
-    pprint(e)
+    logger.debug(pformat(e))
     # must read attribs and translate to entities we know from map_content.txt
     content = e.get("Item")
     x = e.get("TileX")
@@ -12,11 +17,10 @@ def convert_frame(e):
     z = e.get("TileZ")
     item = e.get("Item")
     if item:
-        content = item.get("id")
+        logger.debug(item.get("id"))
-        print(content)
         return "xdecor:itemframe", None, (None, None)
     else:
-        print("empty item frame")
+        logger.warning("empty item frame")
         return "xdecor:itemframe", None, (None, None)
 
 e_convert = {"itemframe": convert_frame}

mcimport.py

@@ -2,9 +2,12 @@
 
 import os
 import sys
+import logging
 from block import *
 import content
 
+logging.basicConfig(level=logging.INFO)
+
 if (sys.version_info < (3, 0)):
     print("This script does not work with Python < 3.0, sorry.")
     exit(1)

tile_entities.py

@@ -1,7 +1,10 @@
+import logging
 from itemstack import *
 #If you wish to add more entities, then...
 # To print out pre and post-conversion entity information uncomment line 237 (ish) in blocks.py (search for 'EntityInfo' to locate it)
 
+logger = logging.getLogger('tile_entities')
+
 def convert_chest(te):
     formspec = "size[8,9]"+\
                "list[current_name;main;0,0;8,4;]"+\
@@ -101,7 +104,7 @@ def convert_pot(te):
         fields = { "_plant": t[c] }
         return None, None, (fields, {})
     except:
-        print('Unknown flower pot type: '+c)
+        logger.warning('Unknown flower pot type: ' + c)
         return None, None, None
 
 def convert_cmdblock(te):