1 from __future__ import unicode_literals
18 def __init__(self, ydl):
21 def _get_root_dir(self):
22 res = self._ydl.params.get('cachedir')
24 cache_root = os.environ.get('XDG_CACHE_HOME', '~/.cache')
25 res = os.path.join(cache_root, 'youtube-dl')
26 return compat_expanduser(res)
28 def _get_cache_fn(self, section, key, dtype):
29 assert re.match(r'^[a-zA-Z0-9_.-]+$', section), \
30 'invalid section %r' % section
31 assert re.match(r'^[a-zA-Z0-9_.-]+$', key), 'invalid key %r' % key
33 self._get_root_dir(), section, '%s.%s' % (key, dtype))
37 return self._ydl.params.get('cachedir') is not False
39 def store(self, section, key, data, dtype='json'):
40 assert dtype in ('json',)
45 fn = self._get_cache_fn(section, key, dtype)
48 os.makedirs(os.path.dirname(fn))
49 except OSError as ose:
50 if ose.errno != errno.EEXIST:
52 write_json_file(data, fn)
54 tb = traceback.format_exc()
55 self._ydl.report_warning(
56 'Writing cache to %r failed: %s' % (fn, tb))
58 def load(self, section, key, dtype='json', default=None):
59 assert dtype in ('json',)
64 cache_fn = self._get_cache_fn(section, key, dtype)
67 with io.open(cache_fn, 'r', encoding='utf-8') as cachef:
68 return json.load(cachef)
71 file_size = os.path.getsize(cache_fn)
72 except (OSError, IOError) as oe:
74 self._ydl.report_warning(
75 'Cache retrieval from %s failed (%s)' % (cache_fn, file_size))
77 pass # No cache available
83 self._ydl.to_screen('Cache is disabled (Did you combine --no-cache-dir and --rm-cache-dir?)')
86 cachedir = self._get_root_dir()
87 if not any((term in cachedir) for term in ('cache', 'tmp')):
88 raise Exception('Not removing directory %s - this does not look like a cache dir' % cachedir)
91 'Removing cache dir %s .' % cachedir, skip_eol=True)
92 if os.path.exists(cachedir):
93 self._ydl.to_screen('.', skip_eol=True)
94 shutil.rmtree(cachedir)
95 self._ydl.to_screen('.')