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- Committer: mbp at sourcefrog
- Date: 2005-03-25 03:24:47 UTC
- Revision ID: mbp@sourcefrog.net-20050325032447-aef4d334620f490a
- don't flush the debug log file so often
- files added:
- doc/faq.txt
- files removed:
- .rsyncexclude
- contrib
- contrib/bash
- contrib/zsh
- urlgrabber
- files modified:
- .bzrignore
added
removed
bzrlib/branch.py
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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 tree import Tree, EmptyTree, RevisionTree, WorkingTree
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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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from osutils import isdir, quotefn, isfile, uuid, sha_file, username, chomp, \
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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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joinpath, sha_string, file_kind, local_time_offset
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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 errors import bailout
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from textui import show_status
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from diff import diff_trees
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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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43
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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58
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Basically we keep looking up until we find the control directory or
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run into the root."""
60
if f == None:
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if f is 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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54
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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last_f = f
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while True:
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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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bailout('%r is not in a branch' % orig_f)
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f = head
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86
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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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:todo: Perhaps use different stores for different classes of object,
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so that we can keep track of how much space each one uses,
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or garbage-collect them.
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:todo: Add a RemoteBranch subclass. For the basic case of read-only
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HTTP access this should be very easy by,
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just redirecting controlfile access into HTTP requests.
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We would need a RemoteStore working similarly.
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:todo: Keep the on-disk branch locked while the object exists.
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:todo: mkdir() method.
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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'):
90
def __init__(self, base, init=False, find_root=True):
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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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:param base: Base directory for the branch.
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init -- If True, create new control files in a previously
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:param 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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:param 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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['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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__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):
180
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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184
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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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def controlfile(self, file_or_path, mode='r'):
210
"""Open a control file for this branch.
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There are two classes of file in the control directory: text
213
and binary. binary files are untranslated byte streams. Text
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control files are stored with Unix newlines and in UTF-8, even
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if the platform or locale defaults are different.
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Controlfiles should almost never be opened in write mode but
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rather should be atomically copied and replaced using atomicfile.
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"""
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fn = self.controlfilename(file_or_path)
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if mode == 'rb' or mode == 'wb':
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return file(fn, mode)
225
elif mode == 'r' or mode == 'w':
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# open in binary mode anyhow so there's no newline translation;
227
# codecs uses line buffering by default; don't want that.
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import codecs
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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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"""Open a control file for this branch"""
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return file(self.controlfilename(file_or_path), mode)
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def _make_control(self):
242
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for d in ('text-store', 'inventory-store', 'revision-store'):
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os.mkdir(self.controlfilename(d))
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for f in ('revision-history', 'merged-patches',
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'pending-merged-patches', 'branch-name',
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'branch-lock'):
169
'pending-merged-patches', 'branch-name'):
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self.controlfile(f, 'w').write('')
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mutter('created control directory in ' + self.base)
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Inventory().write_xml(self.controlfile('inventory','w'))
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In the future, we might need different in-memory Branch
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classes to support downlevel branches. But not yet.
259
"""
260
# This ignores newlines so that we can open branches created
261
# on Windows from Linux and so on. I think it might be better
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# to always make all internal files in unix format.
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fmt = self.controlfile('branch-format', 'r').read()
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fmt.replace('\r\n', '')
182
"""
183
# read in binary mode to detect newline wierdness.
184
fmt = self.controlfile('branch-format', 'rb').read()
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if fmt != BZR_BRANCH_FORMAT:
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bailout('sorry, branch format %r not supported' % fmt,
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['use a different bzr version',
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def read_working_inventory(self):
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"""Read the working inventory."""
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self._need_readlock()
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before = time.time()
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# ElementTree does its own conversion from UTF-8, so open in
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# binary.
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inv = Inventory.read_xml(self.controlfile('inventory', 'rb'))
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inv = Inventory.read_xml(self.controlfile('inventory', 'r'))
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mutter("loaded inventory of %d items in %f"
279
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% (len(inv), time.time() - before))
280
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return inv
286
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That is to say, the inventory describing changes underway, that
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will be committed to the next revision.
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"""
289
self._need_writelock()
290
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## TODO: factor out to atomicfile? is rename safe on windows?
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## TODO: Maybe some kind of clean/dirty marker on inventory?
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tmpfname = self.controlfilename('inventory.tmp')
293
tmpf = file(tmpfname, 'wb')
209
tmpf = file(tmpfname, 'w')
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inv.write_xml(tmpf)
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211
tmpf.close()
296
inv_fname = self.controlfilename('inventory')
297
if sys.platform == 'win32':
298
os.remove(inv_fname)
299
os.rename(tmpfname, inv_fname)
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os.rename(tmpfname, self.controlfilename('inventory'))
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mutter('wrote working inventory')
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def add(self, files, verbose=False):
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"""Make files versioned.
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Note that the command line normally calls smart_add instead.
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This puts the files in the Added state, so that they will be
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recorded by the next commit.
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TODO: Perhaps have an option to add the ids even if the files do
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:todo: Perhaps have an option to add the ids even if the files do
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not (yet) exist.
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TODO: Perhaps return the ids of the files? But then again it
229
:todo: Perhaps return the ids of the files? But then again it
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is easy to retrieve them if they're needed.
320
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321
TODO: Option to specify file id.
232
:todo: Option to specify file id.
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TODO: Adding a directory should optionally recurse down and
234
:todo: Adding a directory should optionally recurse down and
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add all non-ignored children. Perhaps do that in a
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higher-level method.
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346
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Traceback (most recent call last):
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BzrError: ('cannot add: not a regular file or directory: nothere', [])
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"""
349
self._need_writelock()
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# TODO: Re-adding a file that is removed in the working copy
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# should probably put it back with the previous ID.
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self._write_inventory(inv)
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def print_file(self, file, revno):
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"""Print `file` to stdout."""
390
self._need_readlock()
391
tree = self.revision_tree(self.lookup_revision(revno))
392
# use inventory as it was in that revision
393
file_id = tree.inventory.path2id(file)
394
if not file_id:
395
bailout("%r is not present in revision %d" % (file, revno))
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tree.print_file(file_id)
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def remove(self, files, verbose=False):
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"""Mark nominated files for removal from the inventory.
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This does not remove their text. This does not run on
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404
TODO: Refuse to remove modified files unless --force is given?
304
:todo: Refuse to remove modified files unless --force is given?
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>>> b = ScratchBranch(files=['foo'])
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>>> b.add('foo')
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>>> b.working_tree().has_filename('foo')
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True
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327
428
TODO: Do something useful with directories.
328
:todo: Do something useful with directories.
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329
430
TODO: Should this remove the text or not? Tough call; not
330
:todo: Should this remove the text or not? Tough call; not
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removing may be useful and the user can just use use rm, and
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is the opposite of add. Removing it is consistent with most
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other tools. Maybe an option.
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"""
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## TODO: Normalize names
436
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## TODO: Remove nested loops; better scalability
437
self._need_writelock()
438
337
439
338
if isinstance(files, types.StringTypes):
440
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files = [files]
498
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be robust against files disappearing, moving, etc. So the
499
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whole thing is a bit hard.
500
399
501
timestamp -- if not None, seconds-since-epoch for a
400
:param timestamp: if not None, seconds-since-epoch for a
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postdated/predated commit.
503
402
"""
504
self._need_writelock()
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403
506
404
## TODO: Show branch names
507
405
582
480
state = 'A'
583
481
elif (old_ie.name == entry.name
584
482
and old_ie.parent_id == entry.parent_id):
483
state = 'R'
484
else:
585
485
state = 'M'
586
else:
587
state = 'R'
588
486
589
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show_status(state, entry.kind, quotefn(path))
590
488
643
541
## TODO: Also calculate and store the inventory SHA1
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mutter("committing patch r%d" % (self.revno() + 1))
645
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646
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self.append_revision(rev_id)
648
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if verbose:
650
note("commited r%d" % self.revno())
651
652
653
def append_revision(self, revision_id):
654
mutter("add {%s} to revision-history" % revision_id)
655
rev_history = self.revision_history()
656
657
tmprhname = self.controlfilename('revision-history.tmp')
658
rhname = self.controlfilename('revision-history')
659
660
f = file(tmprhname, 'wt')
661
rev_history.append(revision_id)
662
f.write('\n'.join(rev_history))
663
f.write('\n')
664
f.close()
665
666
if sys.platform == 'win32':
667
os.remove(rhname)
668
os.rename(tmprhname, rhname)
669
544
mutter("append to revision-history")
545
self.controlfile('revision-history', 'at').write(rev_id + '\n')
546
547
mutter("done!")
670
548
671
549
672
550
def get_revision(self, revision_id):
673
551
"""Return the Revision object for a named revision"""
674
self._need_readlock()
675
552
r = Revision.read_xml(self.revision_store[revision_id])
676
553
assert r.revision_id == revision_id
677
554
return r
680
557
def get_inventory(self, inventory_id):
681
558
"""Get Inventory object by hash.
682
559
683
TODO: Perhaps for this and similar methods, take a revision
560
:todo: Perhaps for this and similar methods, take a revision
684
561
parameter which can be either an integer revno or a
685
562
string hash."""
686
self._need_readlock()
687
563
i = Inventory.read_xml(self.inventory_store[inventory_id])
688
564
return i
689
565
690
566
691
567
def get_revision_inventory(self, revision_id):
692
568
"""Return inventory of a past revision."""
693
self._need_readlock()
694
569
if revision_id == None:
695
570
return Inventory()
696
571
else:
703
578
>>> ScratchBranch().revision_history()
704
579
[]
705
580
"""
706
self._need_readlock()
707
return [l.rstrip('\r\n') for l in self.controlfile('revision-history', 'r').readlines()]
708
709
710
def enum_history(self, direction):
711
"""Return (revno, revision_id) for history of branch.
712
713
direction
714
'forward' is from earliest to latest
715
'reverse' is from latest to earliest
716
"""
717
rh = self.revision_history()
718
if direction == 'forward':
719
i = 1
720
for rid in rh:
721
yield i, rid
722
i += 1
723
elif direction == 'reverse':
724
i = len(rh)
725
while i > 0:
726
yield i, rh[i-1]
727
i -= 1
728
else:
729
raise BzrError('invalid history direction %r' % direction)
581
return [chomp(l) for l in self.controlfile('revision-history').readlines()]
730
582
731
583
732
584
def revno(self):
754
606
ph = self.revision_history()
755
607
if ph:
756
608
return ph[-1]
757
else:
758
return None
759
609
760
610
761
611
def lookup_revision(self, revno):
762
612
"""Return revision hash for revision number."""
767
617
# list is 0-based; revisions are 1-based
768
618
return self.revision_history()[revno-1]
769
619
except IndexError:
770
raise BzrError("no such revision %s" % revno)
620
bailout("no such revision %s" % revno)
771
621
772
622
773
623
def revision_tree(self, revision_id):
775
625
776
626
`revision_id` may be None for the null revision, in which case
777
627
an `EmptyTree` is returned."""
778
self._need_readlock()
628
779
629
if revision_id == None:
780
630
return EmptyTree()
781
631
else:
785
635
786
636
def working_tree(self):
787
637
"""Return a `Tree` for the working copy."""
788
from workingtree import WorkingTree
789
638
return WorkingTree(self.base, self.read_working_inventory())
790
639
791
640
812
661
813
662
814
663
815
def rename_one(self, from_rel, to_rel):
816
"""Rename one file.
817
818
This can change the directory or the filename or both.
819
"""
820
self._need_writelock()
821
tree = self.working_tree()
822
inv = tree.inventory
823
if not tree.has_filename(from_rel):
824
bailout("can't rename: old working file %r does not exist" % from_rel)
825
if tree.has_filename(to_rel):
826
bailout("can't rename: new working file %r already exists" % to_rel)
827
828
file_id = inv.path2id(from_rel)
829
if file_id == None:
830
bailout("can't rename: old name %r is not versioned" % from_rel)
831
832
if inv.path2id(to_rel):
833
bailout("can't rename: new name %r is already versioned" % to_rel)
834
835
to_dir, to_tail = os.path.split(to_rel)
836
to_dir_id = inv.path2id(to_dir)
837
if to_dir_id == None and to_dir != '':
838
bailout("can't determine destination directory id for %r" % to_dir)
839
840
mutter("rename_one:")
841
mutter(" file_id {%s}" % file_id)
842
mutter(" from_rel %r" % from_rel)
843
mutter(" to_rel %r" % to_rel)
844
mutter(" to_dir %r" % to_dir)
845
mutter(" to_dir_id {%s}" % to_dir_id)
846
847
inv.rename(file_id, to_dir_id, to_tail)
848
849
print "%s => %s" % (from_rel, to_rel)
664
def write_log(self, show_timezone='original'):
665
"""Write out human-readable log of commits to this branch
666
667
:param utc: If true, show dates in universal time, not local time."""
668
## TODO: Option to choose either original, utc or local timezone
669
revno = 1
670
precursor = None
671
for p in self.revision_history():
672
print '-' * 40
673
print 'revno:', revno
674
## TODO: Show hash if --id is given.
675
##print 'revision-hash:', p
676
rev = self.get_revision(p)
677
print 'committer:', rev.committer
678
print 'timestamp: %s' % (format_date(rev.timestamp, rev.timezone or 0,
679
show_timezone))
680
681
## opportunistic consistency check, same as check_patch_chaining
682
if rev.precursor != precursor:
683
bailout("mismatched precursor!")
684
685
print 'message:'
686
if not rev.message:
687
print ' (no message)'
688
else:
689
for l in rev.message.split('\n'):
690
print ' ' + l
691
692
revno += 1
693
precursor = p
694
695
696
697
def show_status(branch, show_all=False):
698
"""Display single-line status for non-ignored working files.
699
700
The list is show sorted in order by file name.
701
702
>>> b = ScratchBranch(files=['foo', 'foo~'])
703
>>> b.show_status()
704
? foo
705
>>> b.add('foo')
706
>>> b.show_status()
707
A foo
708
>>> b.commit("add foo")
709
>>> b.show_status()
710
>>> os.unlink(b.abspath('foo'))
711
>>> b.show_status()
712
D foo
850
713
851
from_abs = self.abspath(from_rel)
852
to_abs = self.abspath(to_rel)
853
try:
854
os.rename(from_abs, to_abs)
855
except OSError, e:
856
bailout("failed to rename %r to %r: %s"
857
% (from_abs, to_abs, e[1]),
858
["rename rolled back"])
859
860
self._write_inventory(inv)
861
862
863
864
def move(self, from_paths, to_name):
865
"""Rename files.
866
867
to_name must exist as a versioned directory.
868
869
If to_name exists and is a directory, the files are moved into
870
it, keeping their old names. If it is a directory,
871
872
Note that to_name is only the last component of the new name;
873
this doesn't change the directory.
714
715
:todo: Get state for single files.
716
717
:todo: Perhaps show a slash at the end of directory names.
718
874
719
"""
875
self._need_writelock()
876
## TODO: Option to move IDs only
877
assert not isinstance(from_paths, basestring)
878
tree = self.working_tree()
879
inv = tree.inventory
880
to_abs = self.abspath(to_name)
881
if not isdir(to_abs):
882
bailout("destination %r is not a directory" % to_abs)
883
if not tree.has_filename(to_name):
884
bailout("destination %r not in working directory" % to_abs)
885
to_dir_id = inv.path2id(to_name)
886
if to_dir_id == None and to_name != '':
887
bailout("destination %r is not a versioned directory" % to_name)
888
to_dir_ie = inv[to_dir_id]
889
if to_dir_ie.kind not in ('directory', 'root_directory'):
890
bailout("destination %r is not a directory" % to_abs)
891
892
to_idpath = Set(inv.get_idpath(to_dir_id))
893
894
for f in from_paths:
895
if not tree.has_filename(f):
896
bailout("%r does not exist in working tree" % f)
897
f_id = inv.path2id(f)
898
if f_id == None:
899
bailout("%r is not versioned" % f)
900
name_tail = splitpath(f)[-1]
901
dest_path = appendpath(to_name, name_tail)
902
if tree.has_filename(dest_path):
903
bailout("destination %r already exists" % dest_path)
904
if f_id in to_idpath:
905
bailout("can't move %r to a subdirectory of itself" % f)
906
907
# OK, so there's a race here, it's possible that someone will
908
# create a file in this interval and then the rename might be
909
# left half-done. But we should have caught most problems.
910
911
for f in from_paths:
912
name_tail = splitpath(f)[-1]
913
dest_path = appendpath(to_name, name_tail)
914
print "%s => %s" % (f, dest_path)
915
inv.rename(inv.path2id(f), to_dir_id, name_tail)
916
try:
917
os.rename(self.abspath(f), self.abspath(dest_path))
918
except OSError, e:
919
bailout("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
920
["rename rolled back"])
921
922
self._write_inventory(inv)
923
924
720
721
# We have to build everything into a list first so that it can
722
# sorted by name, incorporating all the different sources.
723
724
# FIXME: Rather than getting things in random order and then sorting,
725
# just step through in order.
726
727
# Interesting case: the old ID for a file has been removed,
728
# but a new file has been created under that name.
729
730
old = branch.basis_tree()
731
old_inv = old.inventory
732
new = branch.working_tree()
733
new_inv = new.inventory
734
735
for fs, fid, oldname, newname, kind in diff_trees(old, new):
736
if fs == 'R':
737
show_status(fs, kind,
738
oldname + ' => ' + newname)
739
elif fs == 'A' or fs == 'M':
740
show_status(fs, kind, newname)
741
elif fs == 'D':
742
show_status(fs, kind, oldname)
743
elif fs == '.':
744
if show_all:
745
show_status(fs, kind, newname)
746
elif fs == 'I':
747
if show_all:
748
show_status(fs, kind, newname)
749
elif fs == '?':
750
show_status(fs, kind, newname)
751
else:
752
bailout("wierd file state %r" % ((fs, fid),))
753
925
754
926
755
927
756
class ScratchBranch(Branch):
931
760
>>> isdir(b.base)
932
761
True
933
762
>>> bd = b.base
934
>>> b.destroy()
763
>>> del b
935
764
>>> isdir(bd)
936
765
False
937
766
"""
938
def __init__(self, files=[], dirs=[]):
767
def __init__(self, files = []):
939
768
"""Make a test branch.
940
769
941
770
This creates a temporary directory and runs init-tree in it.
943
772
If any files are listed, they are created in the working copy.
944
773
"""
945
774
Branch.__init__(self, tempfile.mkdtemp(), init=True)
946
for d in dirs:
947
os.mkdir(self.abspath(d))
948
949
775
for f in files:
950
776
file(os.path.join(self.base, f), 'w').write('content of %s' % f)
951
777
952
778
953
779
def __del__(self):
954
self.destroy()
955
956
def destroy(self):
957
780
"""Destroy the test branch, removing the scratch directory."""
958
try:
959
mutter("delete ScratchBranch %s" % self.base)
960
shutil.rmtree(self.base)
961
except OSError, e:
962
# Work around for shutil.rmtree failing on Windows when
963
# readonly files are encountered
964
mutter("hit exception in destroying ScratchBranch: %s" % e)
965
for root, dirs, files in os.walk(self.base, topdown=False):
966
for name in files:
967
os.chmod(os.path.join(root, name), 0700)
968
shutil.rmtree(self.base)
969
self.base = None
781
shutil.rmtree(self.base)
970
782
971
783
972
784
1005
817
idx = name.rfind('/')
1006
818
if idx != -1:
1007
819
name = name[idx+1 : ]
1008
idx = name.rfind('\\')
1009
if idx != -1:
1010
name = name[idx+1 : ]
1011
820
1012
821
name = name.lstrip('.')
1013
822
1014
823
s = hexlify(rand_bytes(8))
1015
824
return '-'.join((name, compact_date(time.time()), s))
825
826
Loggerhead is a web-based interface for Breezy
Version: 2.0.1