1 files changed, 63 insertions, 0 deletions
diff --git a/yt_dlp/postprocessor/xattrpp.py b/yt_dlp/postprocessor/xattrpp.py
new file mode 100644
index 0000000..f822eff
--- /dev/null
+++ b/yt_dlp/postprocessor/xattrpp.py
@@ -0,0 +1,63 @@
+import os
+
+from .common import PostProcessor
+from ..compat import compat_os_name
+from ..utils import (
+    PostProcessingError,
+    XAttrMetadataError,
+    XAttrUnavailableError,
+    hyphenate_date,
+    write_xattr,
+)
+
+
+class XAttrMetadataPP(PostProcessor):
+    """Set extended attributes on downloaded file (if xattr support is found)
+
+    More info about extended attributes for media:
+        http://freedesktop.org/wiki/CommonExtendedAttributes/
+        http://www.freedesktop.org/wiki/PhreedomDraft/
+        http://dublincore.org/documents/usageguide/elements.shtml
+
+    TODO:
+        * capture youtube keywords and put them in 'user.dublincore.subject' (comma-separated)
+        * figure out which xattrs can be used for 'duration', 'thumbnail', 'resolution'
+    """
+
+    XATTR_MAPPING = {
+        'user.xdg.referrer.url': 'webpage_url',
+        # 'user.xdg.comment': 'description',
+        'user.dublincore.title': 'title',
+        'user.dublincore.date': 'upload_date',
+        'user.dublincore.description': 'description',
+        'user.dublincore.contributor': 'uploader',
+        'user.dublincore.format': 'format',
+    }
+
+    def run(self, info):
+        mtime = os.stat(info['filepath']).st_mtime
+        self.to_screen('Writing metadata to file\'s xattrs')
+        try:
+            for xattrname, infoname in self.XATTR_MAPPING.items():
+                value = info.get(infoname)
+                if value:
+                    if infoname == 'upload_date':
+                        value = hyphenate_date(value)
+                    write_xattr(info['filepath'], xattrname, value.encode())
+
+        except XAttrUnavailableError as e:
+            raise PostProcessingError(str(e))
+        except XAttrMetadataError as e:
+            if e.reason == 'NO_SPACE':
+                self.report_warning(
+                    'There\'s no disk space left, disk quota exceeded or filesystem xattr limit exceeded. '
+                    'Some extended attributes are not written')
+            elif e.reason == 'VALUE_TOO_LONG':
+                self.report_warning('Unable to write extended attributes due to too long values.')
+            else:
+                tip = ('You need to use NTFS' if compat_os_name == 'nt'
+                       else 'You may have to enable them in your "/etc/fstab"')
+                raise PostProcessingError(f'This filesystem doesn\'t support extended attributes. {tip}')
+
+        self.try_utime(info['filepath'], mtime, mtime)
+        return [], info