- # This mess below finds the best xattr tool for the job and creates a
- # "write_xattr" function.
- try:
- # try the pyxattr module...
- import xattr
-
- def write_xattr(path, key, value):
- return xattr.setxattr(path, key, value)
-
- except ImportError:
- if os.name == 'nt':
- # Write xattrs to NTFS Alternate Data Streams:
- # http://en.wikipedia.org/wiki/NTFS#Alternate_data_streams_.28ADS.29
- def write_xattr(path, key, value):
- assert ':' not in key
- assert os.path.exists(path)
-
- ads_fn = path + ":" + key
- with open(ads_fn, "wb") as f:
- f.write(value)
- else:
- user_has_setfattr = check_executable("setfattr", ['--version'])
- user_has_xattr = check_executable("xattr", ['-h'])
-
- if user_has_setfattr or user_has_xattr:
-
- def write_xattr(path, key, value):
- if user_has_setfattr:
- cmd = ['setfattr', '-n', key, '-v', value, path]
- elif user_has_xattr:
- cmd = ['xattr', '-w', key, value, path]
-
- subprocess_check_output(cmd)
-
- else:
- # On Unix, and can't find pyxattr, setfattr, or xattr.
- if sys.platform.startswith('linux'):
- self._downloader.report_error(
- "Couldn't find a tool to set the xattrs. "
- "Install either the python 'pyxattr' or 'xattr' "
- "modules, or the GNU 'attr' package "
- "(which contains the 'setfattr' tool).")
- else:
- self._downloader.report_error(
- "Couldn't find a tool to set the xattrs. "
- "Install either the python 'xattr' module, "
- "or the 'xattr' binary.")
-