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[YoutubeDL] Don't expand env variables in meta fields (closes #13637)

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Sergey M․ 2017-07-14 00:40:54 +07:00
parent 9a0942ad55
commit 15da37c7dc
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2 changed files with 20 additions and 1 deletions
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6
test/test_YoutubeDL.py
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@ -527,6 +527,8 @@ class TestYoutubeDL(unittest.TestCase):
'ext': 'mp4',
'width': None,
'height': 1080,
'title1': '$PATH',
'title2': '%PATH%',
}
def fname(templ):
@ -545,10 +547,14 @@ class TestYoutubeDL(unittest.TestCase):
self.assertEqual(fname('%(height)0 6d.%(ext)s'), ' 01080.mp4')
self.assertEqual(fname('%(height)0 6d.%(ext)s'), ' 01080.mp4')
self.assertEqual(fname('%(height) 0 6d.%(ext)s'), ' 01080.mp4')
self.assertEqual(fname('%%'), '%')
self.assertEqual(fname('%%%%'), '%%')
self.assertEqual(fname('%%(height)06d.%(ext)s'), '%(height)06d.mp4')
self.assertEqual(fname('%(width)06d.%(ext)s'), 'NA.mp4')
self.assertEqual(fname('%(width)06d.%%(ext)s'), 'NA.%(ext)s')
self.assertEqual(fname('%%(width)06d.%(ext)s'), '%(width)06d.mp4')
self.assertEqual(fname('Hello %(title1)s'), 'Hello $PATH')
self.assertEqual(fname('Hello %(title2)s'), 'Hello %PATH%')
def test_format_note(self):
ydl = YoutubeDL()

15
youtube_dl/YoutubeDL.py
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@ -20,6 +20,7 @@ import re
import shutil
import subprocess
import socket
import string
import sys
import time
import tokenize
@ -674,7 +675,19 @@ class YoutubeDL(object):
FORMAT_RE.format(numeric_field),
r'%({0})s'.format(numeric_field), outtmpl)
filename = expand_path(outtmpl % template_dict)
# expand_path translates '%%' into '%' and '$$' into '$'
# correspondingly that is not what we want since we need to keep
# '%%' intact for template dict substitution step. Working around
# with boundary-alike separator hack.
sep = ''.join([random.choice(string.ascii_letters) for _ in range(32)])
outtmpl = outtmpl.replace('%%', '%{0}%'.format(sep)).replace('$$', '${0}$'.format(sep))
# outtmpl should be expand_path'ed before template dict substitution
# because meta fields may contain env variables we don't want to
# be expanded. For example, for outtmpl "%(title)s.%(ext)s" and
# title "Hello $PATH", we don't want `$PATH` to be expanded.
filename = expand_path(outtmpl).replace(sep, '') % template_dict
# Temporary fix for #4787
# 'Treat' all problem characters by passing filename through preferredencoding
# to workaround encoding issues with subprocess on python2 @ Windows