rewrite with python3

dump-html.py

@@ -1,17 +1,17 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 # -*- coding: UTF-8 -*-
-# File: dump-html.py
-# Date: Wed Mar 25 17:44:20 2015 +0800
-# Author: Yuxin Wu
 
 import sys
 import argparse
+import logging
 
 from common.textutil import ensure_unicode
 from wechat.parser import WeChatDBParser
 from wechat.res import Resource
 from wechat.render import HTMLRender
 
+logger = logging.getLogger("wechat")
+
 def get_args():
     parser = argparse.ArgumentParser()
     parser.add_argument('name', help='name of contact')
@@ -39,7 +39,7 @@ if __name__ == '__main__':
         sys.exit(1)
     res = Resource(parser, args.res, args.avt)
     msgs = parser.msgs_by_chat[chatid]
-    print "Number of Messages: ", len(msgs)
+    logger.info(f"Number of Messages: {len(msgs)}")
     assert len(msgs) > 0
 
     render = HTMLRender(parser, res)
@@ -47,10 +47,11 @@ if __name__ == '__main__':
 
     if len(htmls) == 1:
         with open(output_file, 'w') as f:
-            print >> f, htmls[0].encode('utf-8')
+            f.write(htmls[0])
     else:
         assert output_file.endswith(".html")
         basename = output_file[:-5]
         for idx, html in enumerate(htmls):
             with open(basename + '.{}'.format(idx) + '.html', 'w') as f:
-                print >> f, html.encode('utf-8')
+                f.write(html)
+    res.emoji_cache.flush()