#!/usr/bin/env python3

import codecs
import yaml
import sys

def dict_merge(src, dst):
    for key, value in src.items():
        if isinstance(value, dict):
            node = dst.setdefault(key, {})
            dict_merge(value, node)
        else:
            dst[key] = value
    return dst

all = {}
for file in sys.argv[1:]:
    print(file)
    with codecs.open(file, encoding='utf-8') as f:
        data = yaml.safe_load(f)
    all = dict_merge(all, data)

with codecs.open('cs.yml', 'w', encoding='utf-8') as f:
    yaml.dump(data, f, allow_unicode=True, sort_keys=True)