def _apply_patch(self, patch, force=False, quiet=False):
patch_name = patch.get_name()
pc_dir = self.quilt_pc + patch_name
patch_file = self.quilt_patches + File(patch_name)
refresh = File(pc_dir.get_name() + "~refresh")
forced = False
self.applying_patch(patch)
if patch_file.exists():
try:
patch.run(self.cwd, patch_dir=self.quilt_patches, backup=True,
prefix=pc_dir.get_name(), quiet=quiet)
except SubprocessError as e:
if not force:
patch = RollbackPatch(self.cwd, pc_dir)
patch.rollback()
patch.delete_backup()
raise QuiltError("Patch %s does not apply" % patch_name)
else:
refresh.touch()
forced = True
self.db.add_patch(patch)
if pc_dir.exists():
timestamp = pc_dir + File(".timestamp")
timestamp.touch()
else:
pc_dir.create()
if not patch_file.exists():
self.applied_empty_patch(patch, False)
elif pc_dir.is_empty():
self.applied_empty_patch(patch, True)
elif forced:
raise QuiltError("Applied patch %s (forced; needs refresh)" %
patch.get_name())
else:
self.applied_patch(patch)
