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# Copyright 2008 The Tor Project, Inc. See LICENSE for licensing information.
class PackageSystem:
def getName(self):
raise NotImplemented()
def packageHandleFromJSON(self, json):
raise NotImplemented()
def canBeAutomatic(self):
return True
def canHaveUI(self):
return False
def getTransaction(self):
return PackageTransaction()
class PackageTransaction:
def __init__(self):
self._transactions = []
def _start(self):
pass
def _commit(self):
pass
def run(self):
self._start()
for cb in self._transactions:
cb(self)
self._commit()
def addInstall(self, packageHandle):
self._transactions.append(packageHandle.install)
def addRemove(self, packageHandle):
self._transactions.append(packageHandle.remove)
class PackageHandle:
def isInstalled(self, transaction=None):
raise NotImplemented()
def anyVersionInstalled(self, transaction=None):
raise NotImplemented()
def getInstalledVersion(self, transaction=None):
raise NotImplemented()
def install(self, transaction):
raise NotImplemented()
def remove(self, transaction):
raise NotImplemented()
def checkInstall(self, transaction=None):
raise NotImplemented()
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