git-repo/command.py
Shawn O. Pearce abb7a3dfec Allow callers to request a specific type of manifest
If the caller knows exactly what the manifest type must be we
can now ask the loader to directly construct that type, rather
than guessing it from the working directory.

Signed-off-by: Shawn O. Pearce <sop@google.com>
2009-07-03 20:03:38 -07:00

139 lines
3.5 KiB
Python

#
# Copyright (C) 2008 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import optparse
import sys
import manifest_loader
from error import NoSuchProjectError
class Command(object):
"""Base class for any command line action in repo.
"""
common = False
_optparse = None
def WantPager(self, opt):
return False
@property
def OptionParser(self):
if self._optparse is None:
try:
me = 'repo %s' % self.NAME
usage = self.helpUsage.strip().replace('%prog', me)
except AttributeError:
usage = 'repo %s' % self.NAME
self._optparse = optparse.OptionParser(usage = usage)
self._Options(self._optparse)
return self._optparse
def _Options(self, p):
"""Initialize the option parser.
"""
def Usage(self):
"""Display usage and terminate.
"""
self.OptionParser.print_usage()
sys.exit(1)
def Execute(self, opt, args):
"""Perform the action, after option parsing is complete.
"""
raise NotImplementedError
@property
def manifest(self):
return self.GetManifest()
def GetManifest(self, reparse=False, type=None):
return manifest_loader.GetManifest(self.repodir,
reparse=reparse,
type=type)
def GetProjects(self, args, missing_ok=False):
"""A list of projects that match the arguments.
"""
all = self.manifest.projects
result = []
if not args:
for project in all.values():
if missing_ok or project.Exists:
result.append(project)
else:
by_path = None
for arg in args:
project = all.get(arg)
if not project:
path = os.path.abspath(arg)
if not by_path:
by_path = dict()
for p in all.values():
by_path[p.worktree] = p
if os.path.exists(path):
while path \
and path != '/' \
and path != self.manifest.topdir:
try:
project = by_path[path]
break
except KeyError:
path = os.path.dirname(path)
else:
try:
project = by_path[path]
except KeyError:
pass
if not project:
raise NoSuchProjectError(arg)
if not missing_ok and not project.Exists:
raise NoSuchProjectError(arg)
result.append(project)
def _getpath(x):
return x.relpath
result.sort(key=_getpath)
return result
class InteractiveCommand(Command):
"""Command which requires user interaction on the tty and
must not run within a pager, even if the user asks to.
"""
def WantPager(self, opt):
return False
class PagedCommand(Command):
"""Command which defaults to output in a pager, as its
display tends to be larger than one screen full.
"""
def WantPager(self, opt):
return True
class MirrorSafeCommand(object):
"""Command permits itself to run within a mirror,
and does not require a working directory.
"""