class Pop(Command):
unapplying = Signal()
unapplied = Signal()
unapplied_patch = Signal()
empty_patch = Signal()
def __init__(self, cwd, quilt_pc):
super(Pop, self).__init__(cwd)
self.quilt_pc = Directory(quilt_pc)
self.db = Db(quilt_pc)
def _check(self, force=False):
if not self.db.exists() or not self.db.patches():
raise NoAppliedPatch(self.db)
if not force:
patch = self.db.top_patch()
pc_dir = self.quilt_pc + patch.get_name()
refresh = File(pc_dir.get_name() + "~refresh")
if refresh.exists():
raise QuiltError("Patch %s needs to be refreshed first." %
patch.get_name())
def _unapply_patch(self, patch):
self.unapplying(patch)
patch_name = patch.get_name()
pc_dir = self.quilt_pc + patch_name
timestamp = pc_dir + File(".timestamp")
timestamp.delete_if_exists()
if pc_dir.is_empty():
pc_dir.delete()
self.empty_patch(patch)
else:
unpatch = RollbackPatch(self.cwd, pc_dir)
unpatch.rollback()
unpatch.delete_backup()
self.db.remove_patch(patch)
refresh = File(pc_dir.get_name() + "~refresh")
refresh.delete_if_exists()
self.unapplied_patch(patch)
def unapply_patch(self, patch_name, force=False):
""" Unapply patches up to patch_name. patch_name will end up as top
patch """
self._check(force)
patches = self.db.patches_after(Patch(patch_name))
for patch in reversed(patches):
self._unapply_patch(patch)
self.db.save()
self.unapplied(self.db.top_patch())
def unapply_top_patch(self, force=False):
""" Unapply top patch """
self._check(force)
patch = self.db.top_patch()
self._unapply_patch(patch)
self.db.save()
self.unapplied(self.db.top_patch())
def unapply_all(self, force=False):
""" Unapply all patches """
self._check(force)
for patch in reversed(self.db.applied_patches()):
self._unapply_patch(patch)
self.db.save()
self.unapplied(self.db.top_patch())
