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- Committer: Martin Pool
- Date: 2005-05-26 01:47:47 UTC
- Revision ID: mbp@sourcefrog.net-20050526014747-ff75ca198ee02e1e
- Refactor/cleanup Inventory.entries()
- Rewrite Inventory.directories() to return a list rather than recursive
generators; simpler and much faster
- Rewrite Inventory.directories() to return a list rather than recursive
generators; simpler and much faster
- files added:
- .bzrignore
- bzrlib
- contrib
- contrib/bash
- contrib/zsh
- doc
- elementtree
- notes
- patches
- urlgrabber
- files removed:
- .bzrignore
- foreign
- notes
- tests
added
removed
bzrlib/branch.py
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# Copyright (C) 2005 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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import sys, os, os.path, random, time, sha, sets, types, re, shutil, tempfile
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import traceback, socket, fnmatch, difflib, time
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from binascii import hexlify
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import bzrlib
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from inventory import Inventory
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from trace import mutter, note
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from tree import Tree, EmptyTree, RevisionTree
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from inventory import InventoryEntry, Inventory
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from osutils import isdir, quotefn, isfile, uuid, sha_file, username, \
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format_date, compact_date, pumpfile, user_email, rand_bytes, splitpath, \
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joinpath, sha_string, file_kind, local_time_offset, appendpath
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from store import ImmutableStore
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from revision import Revision
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from errors import bailout, BzrError
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from textui import show_status
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BZR_BRANCH_FORMAT = "Bazaar-NG branch, format 0.0.4\n"
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## TODO: Maybe include checks for common corruption of newlines, etc?
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39
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def find_branch(f, **args):
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if f and (f.startswith('http://') or f.startswith('https://')):
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import remotebranch
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return remotebranch.RemoteBranch(f, **args)
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else:
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return Branch(f, **args)
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47
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def find_branch_root(f=None):
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"""Find the branch root enclosing f, or pwd.
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f may be a filename or a URL.
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It is not necessary that f exists.
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Basically we keep looking up until we find the control directory or
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run into the root."""
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if f == None:
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f = os.getcwd()
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elif hasattr(os.path, 'realpath'):
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f = os.path.realpath(f)
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else:
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f = os.path.abspath(f)
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if not os.path.exists(f):
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raise BzrError('%r does not exist' % f)
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orig_f = f
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69
while True:
70
if os.path.exists(os.path.join(f, bzrlib.BZRDIR)):
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return f
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head, tail = os.path.split(f)
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if head == f:
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# reached the root, whatever that may be
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raise BzrError('%r is not in a branch' % orig_f)
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f = head
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######################################################################
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# branch objects
82
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class Branch:
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"""Branch holding a history of revisions.
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base
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Base directory of the branch.
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"""
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_lockmode = None
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def __init__(self, base, init=False, find_root=True, lock_mode='w'):
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"""Create new branch object at a particular location.
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base -- Base directory for the branch.
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init -- If True, create new control files in a previously
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unversioned directory. If False, the branch must already
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be versioned.
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find_root -- If true and init is false, find the root of the
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existing branch containing base.
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In the test suite, creation of new trees is tested using the
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`ScratchBranch` class.
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"""
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if init:
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self.base = os.path.realpath(base)
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self._make_control()
109
elif find_root:
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self.base = find_branch_root(base)
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else:
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self.base = os.path.realpath(base)
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if not isdir(self.controlfilename('.')):
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bailout("not a bzr branch: %s" % quotefn(base),
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['use "bzr init" to initialize a new working tree',
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'current bzr can only operate from top-of-tree'])
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self._check_format()
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self.lock(lock_mode)
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self.text_store = ImmutableStore(self.controlfilename('text-store'))
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self.revision_store = ImmutableStore(self.controlfilename('revision-store'))
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self.inventory_store = ImmutableStore(self.controlfilename('inventory-store'))
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def __str__(self):
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return '%s(%r)' % (self.__class__.__name__, self.base)
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__repr__ = __str__
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def lock(self, mode='w'):
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"""Lock the on-disk branch, excluding other processes."""
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try:
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import fcntl, errno
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if mode == 'w':
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lm = fcntl.LOCK_EX
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om = os.O_WRONLY | os.O_CREAT
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elif mode == 'r':
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lm = fcntl.LOCK_SH
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om = os.O_RDONLY
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else:
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raise BzrError("invalid locking mode %r" % mode)
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try:
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lockfile = os.open(self.controlfilename('branch-lock'), om)
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except OSError, e:
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if e.errno == errno.ENOENT:
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# might not exist on branches from <0.0.4
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self.controlfile('branch-lock', 'w').close()
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lockfile = os.open(self.controlfilename('branch-lock'), om)
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else:
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raise e
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fcntl.lockf(lockfile, lm)
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def unlock():
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fcntl.lockf(lockfile, fcntl.LOCK_UN)
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os.close(lockfile)
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self._lockmode = None
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self.unlock = unlock
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self._lockmode = mode
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except ImportError:
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warning("please write a locking method for platform %r" % sys.platform)
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def unlock():
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self._lockmode = None
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self.unlock = unlock
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self._lockmode = mode
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def _need_readlock(self):
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if self._lockmode not in ['r', 'w']:
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raise BzrError('need read lock on branch, only have %r' % self._lockmode)
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def _need_writelock(self):
177
if self._lockmode not in ['w']:
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raise BzrError('need write lock on branch, only have %r' % self._lockmode)
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180
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def abspath(self, name):
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"""Return absolute filename for something in the branch"""
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return os.path.join(self.base, name)
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185
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def relpath(self, path):
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"""Return path relative to this branch of something inside it.
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Raises an error if path is not in this branch."""
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rp = os.path.realpath(path)
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# FIXME: windows
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if not rp.startswith(self.base):
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bailout("path %r is not within branch %r" % (rp, self.base))
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rp = rp[len(self.base):]
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rp = rp.lstrip(os.sep)
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return rp
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198
199
def controlfilename(self, file_or_path):
200
"""Return location relative to branch."""
201
if isinstance(file_or_path, types.StringTypes):
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file_or_path = [file_or_path]
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return os.path.join(self.base, bzrlib.BZRDIR, *file_or_path)
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205
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def controlfile(self, file_or_path, mode='r'):
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"""Open a control file for this branch.
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209
There are two classes of file in the control directory: text
210
and binary. binary files are untranslated byte streams. Text
211
control files are stored with Unix newlines and in UTF-8, even
212
if the platform or locale defaults are different.
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214
Controlfiles should almost never be opened in write mode but
215
rather should be atomically copied and replaced using atomicfile.
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"""
217
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fn = self.controlfilename(file_or_path)
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220
if mode == 'rb' or mode == 'wb':
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return file(fn, mode)
222
elif mode == 'r' or mode == 'w':
223
# open in binary mode anyhow so there's no newline translation;
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# codecs uses line buffering by default; don't want that.
225
import codecs
226
return codecs.open(fn, mode + 'b', 'utf-8',
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buffering=60000)
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else:
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raise BzrError("invalid controlfile mode %r" % mode)
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def _make_control(self):
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os.mkdir(self.controlfilename([]))
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self.controlfile('README', 'w').write(
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"This is a Bazaar-NG control directory.\n"
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"Do not change any files in this directory.")
238
self.controlfile('branch-format', 'w').write(BZR_BRANCH_FORMAT)
239
for d in ('text-store', 'inventory-store', 'revision-store'):
240
os.mkdir(self.controlfilename(d))
241
for f in ('revision-history', 'merged-patches',
242
'pending-merged-patches', 'branch-name',
243
'branch-lock'):
244
self.controlfile(f, 'w').write('')
245
mutter('created control directory in ' + self.base)
246
Inventory().write_xml(self.controlfile('inventory','w'))
247
248
249
def _check_format(self):
250
"""Check this branch format is supported.
251
252
The current tool only supports the current unstable format.
253
254
In the future, we might need different in-memory Branch
255
classes to support downlevel branches. But not yet.
256
"""
257
# This ignores newlines so that we can open branches created
258
# on Windows from Linux and so on. I think it might be better
259
# to always make all internal files in unix format.
260
fmt = self.controlfile('branch-format', 'r').read()
261
fmt.replace('\r\n', '')
262
if fmt != BZR_BRANCH_FORMAT:
263
bailout('sorry, branch format %r not supported' % fmt,
264
['use a different bzr version',
265
'or remove the .bzr directory and "bzr init" again'])
266
267
268
def read_working_inventory(self):
269
"""Read the working inventory."""
270
self._need_readlock()
271
before = time.time()
272
# ElementTree does its own conversion from UTF-8, so open in
273
# binary.
274
inv = Inventory.read_xml(self.controlfile('inventory', 'rb'))
275
mutter("loaded inventory of %d items in %f"
276
% (len(inv), time.time() - before))
277
return inv
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279
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def _write_inventory(self, inv):
281
"""Update the working inventory.
282
283
That is to say, the inventory describing changes underway, that
284
will be committed to the next revision.
285
"""
286
self._need_writelock()
287
## TODO: factor out to atomicfile? is rename safe on windows?
288
## TODO: Maybe some kind of clean/dirty marker on inventory?
289
tmpfname = self.controlfilename('inventory.tmp')
290
tmpf = file(tmpfname, 'wb')
291
inv.write_xml(tmpf)
292
tmpf.close()
293
inv_fname = self.controlfilename('inventory')
294
if sys.platform == 'win32':
295
os.remove(inv_fname)
296
os.rename(tmpfname, inv_fname)
297
mutter('wrote working inventory')
298
299
300
inventory = property(read_working_inventory, _write_inventory, None,
301
"""Inventory for the working copy.""")
302
303
304
def add(self, files, verbose=False, ids=None):
305
"""Make files versioned.
306
307
Note that the command line normally calls smart_add instead.
308
309
This puts the files in the Added state, so that they will be
310
recorded by the next commit.
311
312
TODO: Perhaps have an option to add the ids even if the files do
313
not (yet) exist.
314
315
TODO: Perhaps return the ids of the files? But then again it
316
is easy to retrieve them if they're needed.
317
318
TODO: Option to specify file id.
319
320
TODO: Adding a directory should optionally recurse down and
321
add all non-ignored children. Perhaps do that in a
322
higher-level method.
323
"""
324
self._need_writelock()
325
326
# TODO: Re-adding a file that is removed in the working copy
327
# should probably put it back with the previous ID.
328
if isinstance(files, types.StringTypes):
329
assert(ids is None or isinstance(ids, types.StringTypes))
330
files = [files]
331
if ids is not None:
332
ids = [ids]
333
334
if ids is None:
335
ids = [None] * len(files)
336
else:
337
assert(len(ids) == len(files))
338
339
inv = self.read_working_inventory()
340
for f,file_id in zip(files, ids):
341
if is_control_file(f):
342
bailout("cannot add control file %s" % quotefn(f))
343
344
fp = splitpath(f)
345
346
if len(fp) == 0:
347
bailout("cannot add top-level %r" % f)
348
349
fullpath = os.path.normpath(self.abspath(f))
350
351
try:
352
kind = file_kind(fullpath)
353
except OSError:
354
# maybe something better?
355
bailout('cannot add: not a regular file or directory: %s' % quotefn(f))
356
357
if kind != 'file' and kind != 'directory':
358
bailout('cannot add: not a regular file or directory: %s' % quotefn(f))
359
360
if file_id is None:
361
file_id = gen_file_id(f)
362
inv.add_path(f, kind=kind, file_id=file_id)
363
364
if verbose:
365
show_status('A', kind, quotefn(f))
366
367
mutter("add file %s file_id:{%s} kind=%r" % (f, file_id, kind))
368
369
self._write_inventory(inv)
370
371
372
def print_file(self, file, revno):
373
"""Print `file` to stdout."""
374
self._need_readlock()
375
tree = self.revision_tree(self.lookup_revision(revno))
376
# use inventory as it was in that revision
377
file_id = tree.inventory.path2id(file)
378
if not file_id:
379
bailout("%r is not present in revision %d" % (file, revno))
380
tree.print_file(file_id)
381
382
383
def remove(self, files, verbose=False):
384
"""Mark nominated files for removal from the inventory.
385
386
This does not remove their text. This does not run on
387
388
TODO: Refuse to remove modified files unless --force is given?
389
390
TODO: Do something useful with directories.
391
392
TODO: Should this remove the text or not? Tough call; not
393
removing may be useful and the user can just use use rm, and
394
is the opposite of add. Removing it is consistent with most
395
other tools. Maybe an option.
396
"""
397
## TODO: Normalize names
398
## TODO: Remove nested loops; better scalability
399
self._need_writelock()
400
401
if isinstance(files, types.StringTypes):
402
files = [files]
403
404
tree = self.working_tree()
405
inv = tree.inventory
406
407
# do this before any modifications
408
for f in files:
409
fid = inv.path2id(f)
410
if not fid:
411
bailout("cannot remove unversioned file %s" % quotefn(f))
412
mutter("remove inventory entry %s {%s}" % (quotefn(f), fid))
413
if verbose:
414
# having remove it, it must be either ignored or unknown
415
if tree.is_ignored(f):
416
new_status = 'I'
417
else:
418
new_status = '?'
419
show_status(new_status, inv[fid].kind, quotefn(f))
420
del inv[fid]
421
422
self._write_inventory(inv)
423
424
def set_inventory(self, new_inventory_list):
425
inv = Inventory()
426
for path, file_id, parent, kind in new_inventory_list:
427
name = os.path.basename(path)
428
if name == "":
429
continue
430
inv.add(InventoryEntry(file_id, name, kind, parent))
431
self._write_inventory(inv)
432
433
434
def unknowns(self):
435
"""Return all unknown files.
436
437
These are files in the working directory that are not versioned or
438
control files or ignored.
439
440
>>> b = ScratchBranch(files=['foo', 'foo~'])
441
>>> list(b.unknowns())
442
['foo']
443
>>> b.add('foo')
444
>>> list(b.unknowns())
445
[]
446
>>> b.remove('foo')
447
>>> list(b.unknowns())
448
['foo']
449
"""
450
return self.working_tree().unknowns()
451
452
453
def append_revision(self, revision_id):
454
mutter("add {%s} to revision-history" % revision_id)
455
rev_history = self.revision_history()
456
457
tmprhname = self.controlfilename('revision-history.tmp')
458
rhname = self.controlfilename('revision-history')
459
460
f = file(tmprhname, 'wt')
461
rev_history.append(revision_id)
462
f.write('\n'.join(rev_history))
463
f.write('\n')
464
f.close()
465
466
if sys.platform == 'win32':
467
os.remove(rhname)
468
os.rename(tmprhname, rhname)
469
470
471
472
def get_revision(self, revision_id):
473
"""Return the Revision object for a named revision"""
474
self._need_readlock()
475
r = Revision.read_xml(self.revision_store[revision_id])
476
assert r.revision_id == revision_id
477
return r
478
479
480
def get_inventory(self, inventory_id):
481
"""Get Inventory object by hash.
482
483
TODO: Perhaps for this and similar methods, take a revision
484
parameter which can be either an integer revno or a
485
string hash."""
486
self._need_readlock()
487
i = Inventory.read_xml(self.inventory_store[inventory_id])
488
return i
489
490
491
def get_revision_inventory(self, revision_id):
492
"""Return inventory of a past revision."""
493
self._need_readlock()
494
if revision_id == None:
495
return Inventory()
496
else:
497
return self.get_inventory(self.get_revision(revision_id).inventory_id)
498
499
500
def revision_history(self):
501
"""Return sequence of revision hashes on to this branch.
502
503
>>> ScratchBranch().revision_history()
504
[]
505
"""
506
self._need_readlock()
507
return [l.rstrip('\r\n') for l in self.controlfile('revision-history', 'r').readlines()]
508
509
510
def enum_history(self, direction):
511
"""Return (revno, revision_id) for history of branch.
512
513
direction
514
'forward' is from earliest to latest
515
'reverse' is from latest to earliest
516
"""
517
rh = self.revision_history()
518
if direction == 'forward':
519
i = 1
520
for rid in rh:
521
yield i, rid
522
i += 1
523
elif direction == 'reverse':
524
i = len(rh)
525
while i > 0:
526
yield i, rh[i-1]
527
i -= 1
528
else:
529
raise ValueError('invalid history direction', direction)
530
531
532
def revno(self):
533
"""Return current revision number for this branch.
534
535
That is equivalent to the number of revisions committed to
536
this branch.
537
"""
538
return len(self.revision_history())
539
540
541
def last_patch(self):
542
"""Return last patch hash, or None if no history.
543
"""
544
ph = self.revision_history()
545
if ph:
546
return ph[-1]
547
else:
548
return None
549
550
551
def commit(self, *args, **kw):
552
"""Deprecated"""
553
from bzrlib.commit import commit
554
commit(self, *args, **kw)
555
556
557
def lookup_revision(self, revno):
558
"""Return revision hash for revision number."""
559
if revno == 0:
560
return None
561
562
try:
563
# list is 0-based; revisions are 1-based
564
return self.revision_history()[revno-1]
565
except IndexError:
566
raise BzrError("no such revision %s" % revno)
567
568
569
def revision_tree(self, revision_id):
570
"""Return Tree for a revision on this branch.
571
572
`revision_id` may be None for the null revision, in which case
573
an `EmptyTree` is returned."""
574
# TODO: refactor this to use an existing revision object
575
# so we don't need to read it in twice.
576
self._need_readlock()
577
if revision_id == None:
578
return EmptyTree()
579
else:
580
inv = self.get_revision_inventory(revision_id)
581
return RevisionTree(self.text_store, inv)
582
583
584
def working_tree(self):
585
"""Return a `Tree` for the working copy."""
586
from workingtree import WorkingTree
587
return WorkingTree(self.base, self.read_working_inventory())
588
589
590
def basis_tree(self):
591
"""Return `Tree` object for last revision.
592
593
If there are no revisions yet, return an `EmptyTree`.
594
"""
595
r = self.last_patch()
596
if r == None:
597
return EmptyTree()
598
else:
599
return RevisionTree(self.text_store, self.get_revision_inventory(r))
600
601
602
603
def rename_one(self, from_rel, to_rel):
604
"""Rename one file.
605
606
This can change the directory or the filename or both.
607
"""
608
self._need_writelock()
609
tree = self.working_tree()
610
inv = tree.inventory
611
if not tree.has_filename(from_rel):
612
bailout("can't rename: old working file %r does not exist" % from_rel)
613
if tree.has_filename(to_rel):
614
bailout("can't rename: new working file %r already exists" % to_rel)
615
616
file_id = inv.path2id(from_rel)
617
if file_id == None:
618
bailout("can't rename: old name %r is not versioned" % from_rel)
619
620
if inv.path2id(to_rel):
621
bailout("can't rename: new name %r is already versioned" % to_rel)
622
623
to_dir, to_tail = os.path.split(to_rel)
624
to_dir_id = inv.path2id(to_dir)
625
if to_dir_id == None and to_dir != '':
626
bailout("can't determine destination directory id for %r" % to_dir)
627
628
mutter("rename_one:")
629
mutter(" file_id {%s}" % file_id)
630
mutter(" from_rel %r" % from_rel)
631
mutter(" to_rel %r" % to_rel)
632
mutter(" to_dir %r" % to_dir)
633
mutter(" to_dir_id {%s}" % to_dir_id)
634
635
inv.rename(file_id, to_dir_id, to_tail)
636
637
print "%s => %s" % (from_rel, to_rel)
638
639
from_abs = self.abspath(from_rel)
640
to_abs = self.abspath(to_rel)
641
try:
642
os.rename(from_abs, to_abs)
643
except OSError, e:
644
bailout("failed to rename %r to %r: %s"
645
% (from_abs, to_abs, e[1]),
646
["rename rolled back"])
647
648
self._write_inventory(inv)
649
650
651
652
def move(self, from_paths, to_name):
653
"""Rename files.
654
655
to_name must exist as a versioned directory.
656
657
If to_name exists and is a directory, the files are moved into
658
it, keeping their old names. If it is a directory,
659
660
Note that to_name is only the last component of the new name;
661
this doesn't change the directory.
662
"""
663
self._need_writelock()
664
## TODO: Option to move IDs only
665
assert not isinstance(from_paths, basestring)
666
tree = self.working_tree()
667
inv = tree.inventory
668
to_abs = self.abspath(to_name)
669
if not isdir(to_abs):
670
bailout("destination %r is not a directory" % to_abs)
671
if not tree.has_filename(to_name):
672
bailout("destination %r not in working directory" % to_abs)
673
to_dir_id = inv.path2id(to_name)
674
if to_dir_id == None and to_name != '':
675
bailout("destination %r is not a versioned directory" % to_name)
676
to_dir_ie = inv[to_dir_id]
677
if to_dir_ie.kind not in ('directory', 'root_directory'):
678
bailout("destination %r is not a directory" % to_abs)
679
680
to_idpath = inv.get_idpath(to_dir_id)
681
682
for f in from_paths:
683
if not tree.has_filename(f):
684
bailout("%r does not exist in working tree" % f)
685
f_id = inv.path2id(f)
686
if f_id == None:
687
bailout("%r is not versioned" % f)
688
name_tail = splitpath(f)[-1]
689
dest_path = appendpath(to_name, name_tail)
690
if tree.has_filename(dest_path):
691
bailout("destination %r already exists" % dest_path)
692
if f_id in to_idpath:
693
bailout("can't move %r to a subdirectory of itself" % f)
694
695
# OK, so there's a race here, it's possible that someone will
696
# create a file in this interval and then the rename might be
697
# left half-done. But we should have caught most problems.
698
699
for f in from_paths:
700
name_tail = splitpath(f)[-1]
701
dest_path = appendpath(to_name, name_tail)
702
print "%s => %s" % (f, dest_path)
703
inv.rename(inv.path2id(f), to_dir_id, name_tail)
704
try:
705
os.rename(self.abspath(f), self.abspath(dest_path))
706
except OSError, e:
707
bailout("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
708
["rename rolled back"])
709
710
self._write_inventory(inv)
711
712
713
714
715
class ScratchBranch(Branch):
716
"""Special test class: a branch that cleans up after itself.
717
718
>>> b = ScratchBranch()
719
>>> isdir(b.base)
720
True
721
>>> bd = b.base
722
>>> b.destroy()
723
>>> isdir(bd)
724
False
725
"""
726
def __init__(self, files=[], dirs=[]):
727
"""Make a test branch.
728
729
This creates a temporary directory and runs init-tree in it.
730
731
If any files are listed, they are created in the working copy.
732
"""
733
Branch.__init__(self, tempfile.mkdtemp(), init=True)
734
for d in dirs:
735
os.mkdir(self.abspath(d))
736
737
for f in files:
738
file(os.path.join(self.base, f), 'w').write('content of %s' % f)
739
740
741
def __del__(self):
742
self.destroy()
743
744
def destroy(self):
745
"""Destroy the test branch, removing the scratch directory."""
746
try:
747
mutter("delete ScratchBranch %s" % self.base)
748
shutil.rmtree(self.base)
749
except OSError, e:
750
# Work around for shutil.rmtree failing on Windows when
751
# readonly files are encountered
752
mutter("hit exception in destroying ScratchBranch: %s" % e)
753
for root, dirs, files in os.walk(self.base, topdown=False):
754
for name in files:
755
os.chmod(os.path.join(root, name), 0700)
756
shutil.rmtree(self.base)
757
self.base = None
758
759
760
761
######################################################################
762
# predicates
763
764
765
def is_control_file(filename):
766
## FIXME: better check
767
filename = os.path.normpath(filename)
768
while filename != '':
769
head, tail = os.path.split(filename)
770
## mutter('check %r for control file' % ((head, tail), ))
771
if tail == bzrlib.BZRDIR:
772
return True
773
if filename == head:
774
break
775
filename = head
776
return False
777
778
779
780
def gen_file_id(name):
781
"""Return new file id.
782
783
This should probably generate proper UUIDs, but for the moment we
784
cope with just randomness because running uuidgen every time is
785
slow."""
786
import re
787
788
# get last component
789
idx = name.rfind('/')
790
if idx != -1:
791
name = name[idx+1 : ]
792
idx = name.rfind('\\')
793
if idx != -1:
794
name = name[idx+1 : ]
795
796
# make it not a hidden file
797
name = name.lstrip('.')
798
799
# remove any wierd characters; we don't escape them but rather
800
# just pull them out
801
name = re.sub(r'[^\w.]', '', name)
802
803
s = hexlify(rand_bytes(8))
804
return '-'.join((name, compact_date(time.time()), s))
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0