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[extractor/common] Properly escape % in MPD templates (closes #16867)

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Sergey M․ 2018-07-01 02:00:16 +07:00
parent 2160768a21
commit eca1f0d115
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1 changed files with 15 additions and 1 deletions
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youtube_dl/extractor/common.py
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@ -2106,7 +2106,21 @@ def extract_Initialization(source):
representation_ms_info = extract_multisegment_info(representation, adaption_set_ms_info) representation_ms_info = extract_multisegment_info(representation, adaption_set_ms_info)
def prepare_template(template_name, identifiers): def prepare_template(template_name, identifiers):
t = representation_ms_info[template_name] tmpl = representation_ms_info[template_name]
# First of, % characters outside $...$ templates
# must be escaped by doubling for proper processing
# by % operator string formatting used further (see
# https://github.com/rg3/youtube-dl/issues/16867).
t = ''
in_template = False
for c in tmpl:
t += c
if c == '$':
in_template = not in_template
elif c == '%' and not in_template:
t += c
# Next, $...$ templates are translated to their
# %(...) counterparts to be used with % operator
t = t.replace('$RepresentationID$', representation_id) t = t.replace('$RepresentationID$', representation_id)
t = re.sub(r'\$(%s)\$' % '|'.join(identifiers), r'%(\1)d', t) t = re.sub(r'\$(%s)\$' % '|'.join(identifiers), r'%(\1)d', t)
t = re.sub(r'\$(%s)%%([^$]+)\$' % '|'.join(identifiers), r'%(\1)\2', t) t = re.sub(r'\$(%s)%%([^$]+)\$' % '|'.join(identifiers), r'%(\1)\2', t)