mca diff

mcadiff.py

import mcworldlib as mc
import deepdiff
import re
from sys import argv

#argv = [None, 'world/region/r.0.0.original.mca', 'world/region/r.0.0.mca']

name1 = argv[1]
name2 = argv[2]
file1 = mc.anvil.load_region(name1)
file2 = mc.anvil.load_region(name2)

chunks1 = set(file1.keys())
chunks2 = set(file2.keys())
if chunks1 != chunks2:
    print("Chunks missing:")
    removed = (chunks1-chunks2)
    added = (chunks2-chunks1)
    if len(removed) > 0:
        print(f"-{removed}")
    if len(added) > 0:
        print(f"+{added}")

def chunkdiff(chunk1, chunk2):
    keys1 = chunk1.keys()
    keys2 = chunk2.keys()
    if keys1 != keys2:
        removed = set(keys1) - set(keys2)
        added = set(keys2) - set(keys1)
        if len(removed) > 0:
            print(f"-{removed}")
        if len(added) > 0:
            print(f"+{added}")
    for key in keys1:
        k1 = chunk1[key]
        k2 = chunk2[key]
        if k1 != k2:
            diff = deepdiff.DeepDiff(k1, k2)
            for path in diff.affected_paths:
                changed = diff['values_changed'][path]
                printable_path = re.sub('^root', key, path)
                print(f"-{printable_path} = {changed['old_value']}")
                print(f"+{printable_path} = {changed['new_value']}")
    return None

for chunk in set.intersection(chunks1, chunks2):
    chunk1 = file1[chunk]
    chunk2 = file2[chunk]
    if chunk1 != chunk2:
        print(f"in chunk {chunk}:")
        chunkdiff(chunk1, chunk2)