1 from __future__ import unicode_literals
8 from .common import PostProcessor
19 class XAttrMetadataError(PostProcessingError):
20 def __init__(self, code=None, msg='Unknown error'):
21 super(XAttrMetadataError, self).__init__(msg)
24 # Parsing code and msg
25 if (self.code in (errno.ENOSPC, errno.EDQUOT) or
26 'No space left' in self.msg or 'Disk quota excedded' in self.msg):
27 self.reason = 'NO_SPACE'
29 self.reason = 'NOT_SUPPORTED'
32 class XAttrMetadataPP(PostProcessor):
35 # More info about extended attributes for media:
36 # http://freedesktop.org/wiki/CommonExtendedAttributes/
37 # http://www.freedesktop.org/wiki/PhreedomDraft/
38 # http://dublincore.org/documents/usageguide/elements.shtml
41 # * capture youtube keywords and put them in 'user.dublincore.subject' (comma-separated)
42 # * figure out which xattrs can be used for 'duration', 'thumbnail', 'resolution'
46 """ Set extended attributes on downloaded file (if xattr support is found). """
48 # This mess below finds the best xattr tool for the job and creates a
49 # "write_xattr" function.
51 # try the pyxattr module...
54 # Unicode arguments are not supported in python-pyxattr until
56 # See https://github.com/rg3/youtube-dl/issues/5498
57 pyxattr_required_version = '0.5.0'
58 if version_tuple(xattr.__version__) < version_tuple(pyxattr_required_version):
59 self._downloader.report_warning(
60 'python-pyxattr is detected but is too old. '
61 'youtube-dl requires %s or above while your version is %s. '
62 'Falling back to other xattr implementations' % (
63 pyxattr_required_version, xattr.__version__))
67 def write_xattr(path, key, value):
69 xattr.set(path, key, value)
70 except EnvironmentError as e:
71 raise XAttrMetadataError(e.errno, e.strerror)
75 # Write xattrs to NTFS Alternate Data Streams:
76 # http://en.wikipedia.org/wiki/NTFS#Alternate_data_streams_.28ADS.29
77 def write_xattr(path, key, value):
79 assert os.path.exists(path)
81 ads_fn = path + ":" + key
83 with open(ads_fn, "wb") as f:
85 except EnvironmentError as e:
86 raise XAttrMetadataError(e.errno, e.strerror)
88 user_has_setfattr = check_executable("setfattr", ['--version'])
89 user_has_xattr = check_executable("xattr", ['-h'])
91 if user_has_setfattr or user_has_xattr:
93 def write_xattr(path, key, value):
94 value = value.decode('utf-8')
96 executable = 'setfattr'
97 opts = ['-n', key, '-v', value]
100 opts = ['-w', key, value]
102 cmd = ([encodeFilename(executable, True)] +
103 [encodeArgument(o) for o in opts] +
104 [encodeFilename(path, True)])
106 p = subprocess.Popen(
107 cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)
108 stdout, stderr = p.communicate()
109 stderr = stderr.decode('utf-8', 'replace')
110 if p.returncode != 0:
111 raise XAttrMetadataError(p.returncode, stderr)
114 # On Unix, and can't find pyxattr, setfattr, or xattr.
115 if sys.platform.startswith('linux'):
116 self._downloader.report_error(
117 "Couldn't find a tool to set the xattrs. "
118 "Install either the python 'pyxattr' or 'xattr' "
119 "modules, or the GNU 'attr' package "
120 "(which contains the 'setfattr' tool).")
122 self._downloader.report_error(
123 "Couldn't find a tool to set the xattrs. "
124 "Install either the python 'xattr' module, "
125 "or the 'xattr' binary.")
127 # Write the metadata to the file's xattrs
128 self._downloader.to_screen('[metadata] Writing metadata to file\'s xattrs')
130 filename = info['filepath']
134 'user.xdg.referrer.url': 'webpage_url',
135 # 'user.xdg.comment': 'description',
136 'user.dublincore.title': 'title',
137 'user.dublincore.date': 'upload_date',
138 'user.dublincore.description': 'description',
139 'user.dublincore.contributor': 'uploader',
140 'user.dublincore.format': 'format',
143 for xattrname, infoname in xattr_mapping.items():
145 value = info.get(infoname)
148 if infoname == "upload_date":
149 value = hyphenate_date(value)
151 byte_value = value.encode('utf-8')
152 write_xattr(filename, xattrname, byte_value)
156 except XAttrMetadataError as e:
157 if e.reason == 'NO_SPACE':
158 self._downloader.report_warning(
159 'There\'s no disk space left or disk quota exceeded. ' +
160 'Extended attributes are not written.')
162 self._downloader.report_error(
163 'This filesystem doesn\'t support extended attributes. ' +
164 '(You may have to enable them in your /etc/fstab)')