mirror of
https://github.com/yt-dlp/yt-dlp.git
synced 2024-11-30 12:01:28 +00:00
72 lines
2.7 KiB
Python
72 lines
2.7 KiB
Python
from __future__ import unicode_literals
|
|
|
|
import re
|
|
|
|
from .common import PostProcessor
|
|
from ..compat import compat_str
|
|
from ..utils import str_or_none
|
|
|
|
|
|
class MetadataFromFieldPP(PostProcessor):
|
|
regex = r'(?P<field>\w+):(?P<format>.+)$'
|
|
|
|
def __init__(self, downloader, formats):
|
|
PostProcessor.__init__(self, downloader)
|
|
assert isinstance(formats, (list, tuple))
|
|
self._data = []
|
|
for f in formats:
|
|
assert isinstance(f, compat_str)
|
|
match = re.match(self.regex, f)
|
|
assert match is not None
|
|
self._data.append({
|
|
'field': match.group('field'),
|
|
'format': match.group('format'),
|
|
'regex': self.format_to_regex(match.group('format'))})
|
|
|
|
def format_to_regex(self, fmt):
|
|
r"""
|
|
Converts a string like
|
|
'%(title)s - %(artist)s'
|
|
to a regex like
|
|
'(?P<title>.+)\ \-\ (?P<artist>.+)'
|
|
"""
|
|
if not re.search(r'%\(\w+\)s', fmt):
|
|
return fmt
|
|
lastpos = 0
|
|
regex = ''
|
|
# replace %(..)s with regex group and escape other string parts
|
|
for match in re.finditer(r'%\((\w+)\)s', fmt):
|
|
regex += re.escape(fmt[lastpos:match.start()])
|
|
regex += r'(?P<' + match.group(1) + r'>[^\r\n]+)'
|
|
lastpos = match.end()
|
|
if lastpos < len(fmt):
|
|
regex += re.escape(fmt[lastpos:])
|
|
return regex
|
|
|
|
def run(self, info):
|
|
for dictn in self._data:
|
|
field, regex = dictn['field'], dictn['regex']
|
|
if field not in info:
|
|
self.report_warning('Video doesnot have a %s' % field)
|
|
continue
|
|
data_to_parse = str_or_none(info[field])
|
|
if data_to_parse is None:
|
|
self.report_warning('Field %s cannot be parsed' % field)
|
|
continue
|
|
self.write_debug('Searching for r"%s" in %s' % (regex, field))
|
|
match = re.search(regex, data_to_parse)
|
|
if match is None:
|
|
self.report_warning('Could not interpret video %s as "%s"' % (field, dictn['format']))
|
|
continue
|
|
for attribute, value in match.groupdict().items():
|
|
info[attribute] = value
|
|
self.to_screen('parsed %s from %s: %s' % (attribute, field, value if value is not None else 'NA'))
|
|
return [], info
|
|
|
|
|
|
class MetadataFromTitlePP(MetadataFromFieldPP): # for backward compatibility
|
|
def __init__(self, downloader, titleformat):
|
|
super(MetadataFromTitlePP, self).__init__(downloader, ['title:%s' % titleformat])
|
|
self._titleformat = titleformat
|
|
self._titleregex = self._data[0]['regex']
|