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from .writer import GitWriter
from tftp.backend import IBackend
from tftp.errors import Unsupported, AccessViolation
from tftp.util import deferred
from twisted.python.context import get
from twisted.python.filepath import FilePath, InsecurePath
from zope import interface
class GitBackend(object):
interface.implements(IBackend)
def __init__(self, base_path):
self.base_path = base_path
self.base = FilePath(base_path)
@deferred
def get_reader(self, file_name):
raise Unsupported("Reading not supported")
@deferred
def get_writer(self, file_name):
try:
target_path = self.base.descendant(file_name.split("/"))
except InsecurePath, e:
raise AccessViolation("Insecure path: %s" % e)
return GitWriter(target_path, self.base_path, get('remote'))
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