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- Committer: Martin Pool
- Date: 2005-08-25 00:47:04 UTC
- Revision ID: mbp@sourcefrog.net-20050825004704-e3c75123f29539bf
- expose 'find-merge-base' as a new expert command,
to help in debugging merges
move UnrelatedBranches exception into bzrlib.errors
to help in debugging merges
move UnrelatedBranches exception into bzrlib.errors
- files added:
- bzrlib/plugins/checkperms
- files removed:
- bzrlib/builtins.py
- files renamed:
- contrib/newinventory.py => bzrlib/newinventory.py
- files modified:
- .bzrignore
added
removed
bzrlib/commit.py
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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## XXX: Can we do any better about making interrupted commits change
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## nothing?
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## XXX: If we merged two versions of a file then we still need to
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## create a new version representing that merge, even if it didn't
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## change from the parent.
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## TODO: Read back the just-generated changeset, and make sure it
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## applies and recreates the right state.
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import os
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import sys
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import time
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import tempfile
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import sha
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from binascii import hexlify
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from cStringIO import StringIO
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from bzrlib.osutils import (local_time_offset, username,
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rand_bytes, compact_date, user_email,
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kind_marker, is_inside_any, quotefn,
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sha_string, sha_file, isdir, isfile)
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from bzrlib.branch import gen_file_id, INVENTORY_FILEID, ANCESTRY_FILEID
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from bzrlib.errors import BzrError, PointlessCommit
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from bzrlib.revision import Revision, RevisionReference
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from bzrlib.trace import mutter, note
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from bzrlib.xml5 import serializer_v5
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from bzrlib.inventory import Inventory
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from bzrlib.delta import compare_trees
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from bzrlib.weave import Weave
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from bzrlib.weavefile import read_weave, write_weave_v5
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from bzrlib.atomicfile import AtomicFile
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def commit(*args, **kwargs):
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"""Commit a new revision to a branch.
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Function-style interface for convenience of old callers.
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New code should use the Commit class instead.
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"""
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Commit().commit(*args, **kwargs)
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class NullCommitReporter(object):
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"""I report on progress of a commit."""
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def added(self, path):
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pass
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def removed(self, path):
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pass
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def renamed(self, old_path, new_path):
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pass
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class ReportCommitToLog(NullCommitReporter):
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def added(self, path):
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note('added %s', path)
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def removed(self, path):
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note('removed %s', path)
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def renamed(self, old_path, new_path):
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note('renamed %s => %s', old_path, new_path)
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class Commit(object):
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"""Task of committing a new revision.
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This is a MethodObject: it accumulates state as the commit is
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prepared, and then it is discarded. It doesn't represent
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historical revisions, just the act of recording a new one.
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missing_ids
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Modified to hold a list of files that have been deleted from
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the working directory; these should be removed from the
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working inventory.
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"""
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def __init__(self,
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reporter=None):
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if reporter is not None:
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self.reporter = reporter
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else:
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self.reporter = NullCommitReporter()
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def commit(self,
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branch, message,
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timestamp=None,
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timezone=None,
113
committer=None,
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specific_files=None,
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rev_id=None,
116
allow_pointless=True):
117
"""Commit working copy as a new revision.
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The basic approach is to add all the file texts into the
120
store, then the inventory, then make a new revision pointing
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to that inventory and store that.
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This is not quite safe if the working copy changes during the
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commit; for the moment that is simply not allowed. A better
125
approach is to make a temporary copy of the files before
126
computing their hashes, and then add those hashes in turn to
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the inventory. This should mean at least that there are no
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broken hash pointers. There is no way we can get a snapshot
129
of the whole directory at an instant. This would also have to
130
be robust against files disappearing, moving, etc. So the
131
whole thing is a bit hard.
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133
This raises PointlessCommit if there are no changes, no new merges,
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and allow_pointless is false.
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timestamp -- if not None, seconds-since-epoch for a
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postdated/predated commit.
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specific_files
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If true, commit only those files.
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rev_id
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If set, use this as the new revision id.
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Useful for test or import commands that need to tightly
145
control what revisions are assigned. If you duplicate
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a revision id that exists elsewhere it is your own fault.
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If null (default), a time/random revision id is generated.
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"""
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self.branch = branch
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self.branch.lock_write()
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self.rev_id = rev_id
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self.specific_files = specific_files
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self.allow_pointless = allow_pointless
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if timestamp is None:
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self.timestamp = time.time()
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else:
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self.timestamp = long(timestamp)
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if committer is None:
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self.committer = username(self.branch)
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else:
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assert isinstance(committer, basestring), type(committer)
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self.committer = committer
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if timezone is None:
168
self.timezone = local_time_offset()
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else:
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self.timezone = int(timezone)
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assert isinstance(message, basestring), type(message)
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self.message = message
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try:
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# First walk over the working inventory; and both update that
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# and also build a new revision inventory. The revision
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# inventory needs to hold the text-id, sha1 and size of the
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# actual file versions committed in the revision. (These are
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# not present in the working inventory.) We also need to
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# detect missing/deleted files, and remove them from the
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# working inventory.
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self.work_tree = self.branch.working_tree()
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self.work_inv = self.work_tree.inventory
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self.basis_tree = self.branch.basis_tree()
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self.basis_inv = self.basis_tree.inventory
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self._gather_parents()
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if self.rev_id is None:
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self.rev_id = _gen_revision_id(self.branch, time.time())
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# TODO: update hashcache
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self.delta = compare_trees(self.basis_tree, self.work_tree,
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specific_files=self.specific_files)
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if not (self.delta.has_changed()
199
or self.allow_pointless
200
or len(self.parents) != 1):
201
raise PointlessCommit()
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self.new_inv = self.basis_inv.copy()
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self.delta.show(sys.stdout)
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self._remove_deleted()
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self._store_files()
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self.branch._write_inventory(self.work_inv)
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self._record_inventory()
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self._record_ancestry()
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self._make_revision()
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note('committted r%d {%s}', (self.branch.revno() + 1),
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self.rev_id)
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self.branch.append_revision(self.rev_id)
218
self.branch.set_pending_merges([])
219
finally:
220
self.branch.unlock()
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def _record_inventory(self):
224
"""Store the inventory for the new revision."""
225
inv_tmp = StringIO()
226
serializer_v5.write_inventory(self.new_inv, inv_tmp)
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# FIXME: "bzr commit doc/format" commits doc/format.txt!
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def commit(branch, message,
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timestamp=None,
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timezone=None,
24
committer=None,
25
verbose=True,
26
specific_files=None,
27
rev_id=None,
28
allow_pointless=True):
29
"""Commit working copy as a new revision.
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31
The basic approach is to add all the file texts into the
32
store, then the inventory, then make a new revision pointing
33
to that inventory and store that.
34
35
This is not quite safe if the working copy changes during the
36
commit; for the moment that is simply not allowed. A better
37
approach is to make a temporary copy of the files before
38
computing their hashes, and then add those hashes in turn to
39
the inventory. This should mean at least that there are no
40
broken hash pointers. There is no way we can get a snapshot
41
of the whole directory at an instant. This would also have to
42
be robust against files disappearing, moving, etc. So the
43
whole thing is a bit hard.
44
45
This raises PointlessCommit if there are no changes, no new merges,
46
and allow_pointless is false.
47
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timestamp -- if not None, seconds-since-epoch for a
49
postdated/predated commit.
50
51
specific_files
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If true, commit only those files.
53
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rev_id
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If set, use this as the new revision id.
56
Useful for test or import commands that need to tightly
57
control what revisions are assigned. If you duplicate
58
a revision id that exists elsewhere it is your own fault.
59
If null (default), a time/random revision id is generated.
60
"""
61
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import time, tempfile
63
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from bzrlib.osutils import local_time_offset, username
65
from bzrlib.branch import gen_file_id
66
from bzrlib.errors import BzrError, PointlessCommit
67
from bzrlib.revision import Revision, RevisionReference
68
from bzrlib.trace import mutter, note
69
from bzrlib.xml import pack_xml
70
71
branch.lock_write()
72
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try:
74
# First walk over the working inventory; and both update that
75
# and also build a new revision inventory. The revision
76
# inventory needs to hold the text-id, sha1 and size of the
77
# actual file versions committed in the revision. (These are
78
# not present in the working inventory.) We also need to
79
# detect missing/deleted files, and remove them from the
80
# working inventory.
81
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work_tree = branch.working_tree()
83
work_inv = work_tree.inventory
84
basis = branch.basis_tree()
85
basis_inv = basis.inventory
86
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if verbose:
88
# note('looking for changes...')
89
# print 'looking for changes...'
90
# disabled; should be done at a higher level
91
pass
92
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pending_merges = branch.pending_merges()
94
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missing_ids, new_inv, any_changes = \
96
_gather_commit(branch,
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work_tree,
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work_inv,
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basis_inv,
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specific_files,
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verbose)
102
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if not (any_changes or allow_pointless or pending_merges):
104
raise PointlessCommit()
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for file_id in missing_ids:
107
# Any files that have been deleted are now removed from the
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# working inventory. Files that were not selected for commit
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# are left as they were in the working inventory and ommitted
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# from the revision inventory.
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# have to do this later so we don't mess up the iterator.
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# since parents may be removed before their children we
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# have to test.
115
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# FIXME: There's probably a better way to do this; perhaps
117
# the workingtree should know how to filter itbranch.
118
if work_inv.has_id(file_id):
119
del work_inv[file_id]
120
121
if rev_id is None:
122
rev_id = _gen_revision_id(branch, time.time())
123
inv_id = rev_id
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125
inv_tmp = tempfile.TemporaryFile()
126
pack_xml(new_inv, inv_tmp)
227
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inv_tmp.seek(0)
228
self.inv_sha1 = sha_string(inv_tmp.getvalue())
229
inv_lines = inv_tmp.readlines()
230
self.branch.weave_store.add_text(INVENTORY_FILEID, self.rev_id,
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inv_lines, self.parents)
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def _record_ancestry(self):
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"""Append merged revision ancestry to the ancestry file."""
236
if len(self.parents) > 1:
237
raise NotImplementedError("sorry, can't commit merges yet")
238
w = self.branch.weave_store.get_weave_or_empty(ANCESTRY_FILEID)
239
if self.parents:
240
lines = w.get(w.lookup(self.parents[0]))
241
else:
242
lines = []
243
lines.append(self.rev_id + '\n')
244
parent_idxs = map(w.lookup, self.parents)
245
w.add(self.rev_id, parent_idxs, lines)
246
self.branch.weave_store.put_weave(ANCESTRY_FILEID, w)
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def _gather_parents(self):
250
pending_merges = self.branch.pending_merges()
251
if pending_merges:
252
raise NotImplementedError("sorry, can't commit merges to the weave format yet")
253
self.parents = []
254
precursor_id = self.branch.last_patch()
128
branch.inventory_store.add(inv_tmp, inv_id)
129
mutter('new inventory_id is {%s}' % inv_id)
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# We could also just sha hash the inv_tmp file
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# however, in the case that branch.inventory_store.add()
133
# ever actually does anything special
134
inv_sha1 = branch.get_inventory_sha1(inv_id)
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branch._write_inventory(work_inv)
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if timestamp == None:
139
timestamp = time.time()
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141
if committer == None:
142
committer = username(branch)
143
144
if timezone == None:
145
timezone = local_time_offset()
146
147
mutter("building commit log message")
148
rev = Revision(timestamp=timestamp,
149
timezone=timezone,
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committer=committer,
151
message = message,
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inventory_id=inv_id,
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inventory_sha1=inv_sha1,
154
revision_id=rev_id)
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rev.parents = []
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precursor_id = branch.last_patch()
255
158
if precursor_id:
256
self.parents.append(precursor_id)
257
self.parents += pending_merges
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259
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def _make_revision(self):
261
"""Record a new revision object for this commit."""
262
self.rev = Revision(timestamp=self.timestamp,
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timezone=self.timezone,
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committer=self.committer,
265
message=self.message,
266
inventory_sha1=self.inv_sha1,
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revision_id=self.rev_id)
268
self.rev.parents = map(RevisionReference, self.parents)
159
precursor_sha1 = branch.get_revision_sha1(precursor_id)
160
rev.parents.append(RevisionReference(precursor_id, precursor_sha1))
161
for merge_rev in pending_merges:
162
rev.parents.append(RevisionReference(merge_rev))
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164
rev_tmp = tempfile.TemporaryFile()
270
serializer_v5.write_revision(self.rev, rev_tmp)
165
pack_xml(rev, rev_tmp)
271
166
rev_tmp.seek(0)
272
self.branch.revision_store.add(rev_tmp, self.rev_id)
273
mutter('new revision_id is {%s}', self.rev_id)
274
275
276
def _remove_deleted(self):
277
"""Remove deleted files from the working and stored inventories."""
278
for path, id, kind in self.delta.removed:
279
if self.work_inv.has_id(id):
280
del self.work_inv[id]
281
if self.new_inv.has_id(id):
282
del self.new_inv[id]
283
284
285
286
def _store_files(self):
287
"""Store new texts of modified/added files."""
288
# We must make sure that directories are added before anything
289
# inside them is added. the files within the delta report are
290
# sorted by path so we know the directory will come before its
291
# contents.
292
for path, file_id, kind in self.delta.added:
293
if kind != 'file':
294
ie = self.work_inv[file_id].copy()
295
self.new_inv.add(ie)
296
else:
297
self._store_file_text(file_id)
298
299
for path, file_id, kind in self.delta.modified:
300
if kind != 'file':
301
continue
302
self._store_file_text(file_id)
303
304
for old_path, new_path, file_id, kind, text_modified in self.delta.renamed:
305
if kind != 'file':
306
continue
307
if not text_modified:
308
continue
309
self._store_file_text(file_id)
310
311
312
def _store_file_text(self, file_id):
313
"""Store updated text for one modified or added file."""
314
note('store new text for {%s} in revision {%s}',
315
file_id, self.rev_id)
316
new_lines = self.work_tree.get_file(file_id).readlines()
317
if file_id in self.new_inv: # was in basis inventory
318
ie = self.new_inv[file_id]
319
assert ie.file_id == file_id
320
assert file_id in self.basis_inv
321
assert self.basis_inv[file_id].kind == 'file'
322
old_version = self.basis_inv[file_id].text_version
323
file_parents = [old_version]
324
else: # new in this revision
325
ie = self.work_inv[file_id].copy()
326
self.new_inv.add(ie)
327
assert file_id not in self.basis_inv
328
file_parents = []
329
assert ie.kind == 'file'
330
self._add_text_to_weave(file_id, new_lines, file_parents)
331
# make a new inventory entry for this file, using whatever
332
# it had in the working copy, plus details on the new text
333
ie.text_sha1 = _sha_strings(new_lines)
334
ie.text_size = sum(map(len, new_lines))
335
ie.text_version = self.rev_id
336
ie.entry_version = self.rev_id
337
338
339
def _add_text_to_weave(self, file_id, new_lines, parents):
340
if file_id.startswith('__'):
341
raise ValueError('illegal file-id %r for text file' % file_id)
342
self.branch.weave_store.add_text(file_id, self.rev_id, new_lines, parents)
167
branch.revision_store.add(rev_tmp, rev_id)
168
mutter("new revision_id is {%s}" % rev_id)
169
170
## XXX: Everything up to here can simply be orphaned if we abort
171
## the commit; it will leave junk files behind but that doesn't
172
## matter.
173
174
## TODO: Read back the just-generated changeset, and make sure it
175
## applies and recreates the right state.
176
177
## TODO: Also calculate and store the inventory SHA1
178
mutter("committing patch r%d" % (branch.revno() + 1))
179
180
branch.append_revision(rev_id)
181
182
branch.set_pending_merges([])
183
184
if verbose:
185
# disabled; should go through logging
186
# note("commited r%d" % branch.revno())
187
# print ("commited r%d" % branch.revno())
188
pass
189
finally:
190
branch.unlock()
191
343
192
344
193
345
194
def _gen_revision_id(branch, when):
346
195
"""Return new revision-id."""
196
from binascii import hexlify
197
from bzrlib.osutils import rand_bytes, compact_date, user_email
198
347
199
s = '%s-%s-' % (user_email(branch), compact_date(when))
348
200
s += hexlify(rand_bytes(8))
349
201
return s
350
202
351
203
352
def _sha_strings(strings):
353
"""Return the sha-1 of concatenation of strings"""
354
s = sha.new()
355
map(s.update, strings)
356
return s.hexdigest()
204
def _gather_commit(branch, work_tree, work_inv, basis_inv, specific_files,
205
verbose):
206
"""Build inventory preparatory to commit.
207
208
Returns missing_ids, new_inv, any_changes.
209
210
This adds any changed files into the text store, and sets their
211
test-id, sha and size in the returned inventory appropriately.
212
213
missing_ids
214
Modified to hold a list of files that have been deleted from
215
the working directory; these should be removed from the
216
working inventory.
217
"""
218
from bzrlib.inventory import Inventory
219
from bzrlib.osutils import isdir, isfile, sha_string, quotefn, \
220
local_time_offset, username, kind_marker, is_inside_any
221
222
from bzrlib.branch import gen_file_id
223
from bzrlib.errors import BzrError
224
from bzrlib.revision import Revision
225
from bzrlib.trace import mutter, note
226
227
any_changes = False
228
inv = Inventory(work_inv.root.file_id)
229
missing_ids = []
230
231
for path, entry in work_inv.iter_entries():
232
## TODO: Check that the file kind has not changed from the previous
233
## revision of this file (if any).
234
235
p = branch.abspath(path)
236
file_id = entry.file_id
237
mutter('commit prep file %s, id %r ' % (p, file_id))
238
239
if specific_files and not is_inside_any(specific_files, path):
240
mutter(' skipping file excluded from commit')
241
if basis_inv.has_id(file_id):
242
# carry over with previous state
243
inv.add(basis_inv[file_id].copy())
244
else:
245
# omit this from committed inventory
246
pass
247
continue
248
249
if not work_tree.has_id(file_id):
250
if verbose:
251
print('deleted %s%s' % (path, kind_marker(entry.kind)))
252
any_changes = True
253
mutter(" file is missing, removing from inventory")
254
missing_ids.append(file_id)
255
continue
256
257
# this is present in the new inventory; may be new, modified or
258
# unchanged.
259
old_ie = basis_inv.has_id(file_id) and basis_inv[file_id]
260
261
entry = entry.copy()
262
inv.add(entry)
263
264
if old_ie:
265
old_kind = old_ie.kind
266
if old_kind != entry.kind:
267
raise BzrError("entry %r changed kind from %r to %r"
268
% (file_id, old_kind, entry.kind))
269
270
if entry.kind == 'directory':
271
if not isdir(p):
272
raise BzrError("%s is entered as directory but not a directory"
273
% quotefn(p))
274
elif entry.kind == 'file':
275
if not isfile(p):
276
raise BzrError("%s is entered as file but is not a file" % quotefn(p))
277
278
new_sha1 = work_tree.get_file_sha1(file_id)
279
280
if (old_ie
281
and old_ie.text_sha1 == new_sha1):
282
## assert content == basis.get_file(file_id).read()
283
entry.text_id = old_ie.text_id
284
entry.text_sha1 = new_sha1
285
entry.text_size = old_ie.text_size
286
mutter(' unchanged from previous text_id {%s}' %
287
entry.text_id)
288
else:
289
content = file(p, 'rb').read()
290
291
# calculate the sha again, just in case the file contents
292
# changed since we updated the cache
293
entry.text_sha1 = sha_string(content)
294
entry.text_size = len(content)
295
296
entry.text_id = gen_file_id(entry.name)
297
branch.text_store.add(content, entry.text_id)
298
mutter(' stored with text_id {%s}' % entry.text_id)
299
300
if verbose:
301
marked = path + kind_marker(entry.kind)
302
if not old_ie:
303
print 'added', marked
304
any_changes = True
305
elif old_ie == entry:
306
pass # unchanged
307
elif (old_ie.name == entry.name
308
and old_ie.parent_id == entry.parent_id):
309
print 'modified', marked
310
any_changes = True
311
else:
312
print 'renamed', marked
313
any_changes = True
314
315
return missing_ids, inv, any_changes
316
317
Loggerhead is a web-based interface for Breezy
Version: 2.0.1