Support exporting nico comments as SRT

nico_comment.py

@@ -8,6 +8,7 @@ import os
 from urllib.parse import urlparse
 
 import pandas as pd
+import pysrt
 from nicotools.download import Comment, Info, utils
 import simplejson as json
 
@@ -35,20 +36,45 @@ def extract_ids(urls):
     return nico_id
 
 
+def build_srt(data):
+
+    srt_file = pysrt.SubRipFile()
+    for index, proc in enumerate(data):
+        time, text = proc
+        time = datetime.strptime(time, "%M:%S.%f")
+        subtime_st = pysrt.SubRipTime(minutes=time.minute, seconds=time.second,
+                                      milliseconds=time.microsecond / 1000)
+        subtime_end = pysrt.SubRipTime(minutes=time.minute,
+                                       seconds=time.second + 2,
+                                       milliseconds=time.microsecond / 1000)
+        entry = pysrt.SubRipItem(index, subtime_st, subtime_end, text=text)
+        srt_file.append(entry)
+
+    return srt_file
+
+
 class CommentStream(Comment):
 
+    srt = False
+
     def saver(self, video_id: str, is_xml: bool,
               coroutine: asyncio.Task) -> bool:
+
+        if is_xml:
+            super().saver(video_id, is_xml, coroutine)
+            return True
+
         comment_data = coroutine.result()
         conts = list()
 
-        if not is_xml:
         data = json.loads(comment_data)
         contents = [process_element(item)
                     for item in data if "chat" in item]
 
         file_path = utils.make_name(self.glossary[video_id], "",
                                     extention="txt")
+        file_srt = utils.make_name(self.glossary[video_id], "",
+                                   extention="srt")
 
         df = pd.DataFrame.from_records(contents,
                                        columns=["Time", "Comment"])
@@ -56,10 +82,13 @@ class CommentStream(Comment):
                                     format="%M:%S.%f").dt.time
         df = df.sort_values(by="Time")
 
-
         with file_path.open("w", encoding="utf-8") as f:
             df.to_csv(f, sep="\t", index=False)
 
+        if self.srt:
+            srt_data = build_srt(contents)
+            srt_data.save(str(file_srt))
+
         return True
 
 
@@ -69,6 +98,8 @@ def main():
     parser.add_argument("video", help="Video URL(s)", nargs="+")
     parser.add_argument("-d", "--destination", help="Destination directory",
                         default="./")
+    parser.add_argument("--no-srt", action="store_false",
+                        help="Don't generate SRT")
 
     options = parser.parse_args()
     user, _, password = netrc.netrc().hosts["niconico"]
@@ -76,6 +107,7 @@ def main():
 
     database = Info(video_ids, mail=user, password=password).info
     com = CommentStream(database, user, password, save_dir=options.destination)
+    com.srt = options.no_srt
     com.start()