def save(self, name, content):
if name is None:
name = content.name
full_name = self.path(name)
full_name_content = self.path(content.name)
# Ensure that two pathes really point to the same file
if (_samefile(full_name, full_name_content)
and os.path.isfile(full_name)
and os.stat(full_name).st_size == content.size):
return name
else:
return super(CustomFileSystemStorage, self).save(name, content)
def save(self, name, content):
if name is None:
name = content.name
full_name = self.path(name)
full_name_content = self.path(content.name)
# Ensure that two pathes really point to the same file
if (_samefile(full_name, full_name_content) and
os.path.isfile(full_name) and
os.stat(full_name).st_size == content.size):
return name
else:
return super(CustomFileSystemStorage, self).save(name, content)
def file_symlink_safe(old_file_name, new_file_name, allow_overwrite=False):
"""
Create a symbolic link to `old_file_name` from `new_file_name`.
Might raise NotImplemented if the system does not support symbolic links,
and IOError or other Exceptions thrown by os.symlink.
:param old_file_name:
:param new_file_name:
:param allow_overwrite:
:return:
"""
# Make sure the system has support for symbolic links.
# TODO: detect it with more precision, check for other platforms.
if os.name != 'posix':
raise NotImplemented('System %s does not support symbolic links' %
os.name)
# There's no reason to move if we don't have to.
if _samefile(old_file_name, new_file_name):
return
# Create the symbolic link.
os.symlink(old_file_name, new_file_name)
