[postprocessor/metadatafromtitle] Add support regex syntax for --metadata-from-title...

[youtube-dl] / youtube_dl / postprocessor / metadatafromtitle.py

diff --git a/youtube_dl/postprocessor/metadatafromtitle.py b/youtube_dl/postprocessor/metadatafromtitle.py
index f7c831c671abf0a3d5445b7be3e9d9f5e3f1c17c..c73f02447402e74a8eefd52a3c2f72bfd8c919f0 100644 (file)
--- a/youtube_dl/postprocessor/metadatafromtitle.py
+++ b/youtube_dl/postprocessor/metadatafromtitle.py
@@ -3,21 +3,18 @@ from __future__ import unicode_literals
 import re
 
 from .common import PostProcessor
-from ..utils import PostProcessingError
-
-
-class MetadataFromTitlePPError(PostProcessingError):
-    pass
 
 
 class MetadataFromTitlePP(PostProcessor):
     def __init__(self, downloader, titleformat):
         super(MetadataFromTitlePP, self).__init__(downloader)
         self._titleformat = titleformat
-        self._titleregex = self.format_to_regex(titleformat)
+        self._titleregex = (self.format_to_regex(titleformat)
+                            if re.search(r'%\(\w+\)s', titleformat)
+                            else titleformat)
 
     def format_to_regex(self, fmt):
-        """
+        r"""
         Converts a string like
            '%(title)s - %(artist)s'
         to a regex like
@@ -31,7 +28,7 @@ class MetadataFromTitlePP(PostProcessor):
             regex += r'(?P<' + match.group(1) + '>.+)'
             lastpos = match.end()
         if lastpos < len(fmt):
-            regex += re.escape(fmt[lastpos:len(fmt)])
+            regex += re.escape(fmt[lastpos:])
         return regex
 
     def run(self, info):