1
1
# Copyright (C) 2005 Canonical Ltd
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
5
5
# the Free Software Foundation; either version 2 of the License, or
6
6
# (at your option) any later version.
8
8
# This program is distributed in the hope that it will be useful,
9
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
11
# GNU General Public License for more details.
13
13
# You should have received a copy of the GNU General Public License
14
14
# along with this program; if not, write to the Free Software
15
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
48
53
trees or versioned trees.
56
def changes_from(self, other, want_unchanged=False, specific_files=None,
57
extra_trees=None, require_versioned=False):
58
"""Return a TreeDelta of the changes from other to this tree.
60
:param other: A tree to compare with.
61
:param specific_files: An optional list of file paths to restrict the
62
comparison to. When mapping filenames to ids, all matches in all
63
trees (including optional extra_trees) are used, and all children of
64
matched directories are included.
65
:param want_unchanged: An optional boolean requesting the inclusion of
66
unchanged entries in the result.
67
:param extra_trees: An optional list of additional trees to use when
68
mapping the contents of specific_files (paths) to file_ids.
69
:param require_versioned: An optional boolean (defaults to False). When
70
supplied and True all the 'specific_files' must be versioned, or
71
a PathsNotVersionedError will be thrown.
73
The comparison will be performed by an InterTree object looked up on
76
# Martin observes that Tree.changes_from returns a TreeDelta and this
77
# may confuse people, because the class name of the returned object is
78
# a synonym of the object referenced in the method name.
79
return InterTree.get(other, self).compare(
80
want_unchanged=want_unchanged,
81
specific_files=specific_files,
82
extra_trees=extra_trees,
83
require_versioned=require_versioned,
87
"""Get a list of the conflicts in the tree.
89
Each conflict is an instance of bzrlib.conflicts.Conflict.
93
def get_parent_ids(self):
94
"""Get the parent ids for this tree.
96
:return: a list of parent ids. [] is returned to indicate
97
a tree with no parents.
98
:raises: BzrError if the parents are not known.
100
raise NotImplementedError(self.get_parent_ids)
51
102
def has_filename(self, filename):
52
103
"""True if the tree has given filename."""
53
104
raise NotImplementedError()
55
106
def has_id(self, file_id):
56
107
return self.inventory.has_id(file_id)
109
__contains__ = has_id
58
111
def has_or_had_id(self, file_id):
59
112
if file_id == self.inventory.root.file_id:
61
114
return self.inventory.has_id(file_id)
65
116
def __iter__(self):
66
117
return iter(self.inventory)
68
119
def id2path(self, file_id):
69
120
return self.inventory.id2path(file_id)
122
def is_control_filename(self, filename):
123
"""True if filename is the name of a control file in this tree.
125
:param filename: A filename within the tree. This is a relative path
126
from the root of this tree.
128
This is true IF and ONLY IF the filename is part of the meta data
129
that bzr controls in this tree. I.E. a random .bzr directory placed
130
on disk will not be a control file for this tree.
132
return self.bzrdir.is_control_filename(filename)
134
def iter_entries_by_dir(self):
135
"""Walk the tree in 'by_dir' order.
137
This will yield each entry in the tree as a (path, entry) tuple. The
138
order that they are yielded is: the contents of a directory are
139
preceeded by the parent of a directory, and all the contents of a
140
directory are grouped together.
142
return self.inventory.iter_entries_by_dir()
71
144
def kind(self, file_id):
72
145
raise NotImplementedError("subclasses must implement kind")
74
147
def _get_inventory(self):
75
148
return self._inventory
150
def get_file(self, file_id):
151
"""Return a file object for the file file_id in the tree."""
152
raise NotImplementedError(self.get_file)
77
154
def get_file_by_path(self, path):
78
155
return self.get_file(self._inventory.path2id(path))
121
208
# are not versioned.
122
209
pred = self.inventory.has_filename
123
210
return set((p for p in paths if not pred(p)))
126
class RevisionTree(Tree):
127
"""Tree viewing a previous revision.
129
File text can be retrieved from the text store.
131
TODO: Some kind of `__repr__` method, but a good one
132
probably means knowing the branch and revision number,
133
or at least passing a description to the constructor.
136
def __init__(self, branch, inv, revision_id):
137
self._branch = branch
138
self._weave_store = branch.weave_store
139
self._inventory = inv
140
self._revision_id = revision_id
142
def get_weave(self, file_id):
143
return self._weave_store.get_weave(file_id,
144
self._branch.get_transaction())
146
def get_file_lines(self, file_id):
147
ie = self._inventory[file_id]
148
weave = self.get_weave(file_id)
149
return weave.get_lines(ie.revision)
151
def get_file_text(self, file_id):
152
return ''.join(self.get_file_lines(file_id))
154
def get_file(self, file_id):
155
return StringIO(self.get_file_text(file_id))
157
def get_file_size(self, file_id):
158
return self._inventory[file_id].text_size
160
def get_file_sha1(self, file_id):
161
ie = self._inventory[file_id]
162
if ie.kind == "file":
165
def is_executable(self, file_id):
166
ie = self._inventory[file_id]
167
if ie.kind != "file":
169
return self._inventory[file_id].executable
171
def has_filename(self, filename):
172
return bool(self.inventory.path2id(filename))
174
def list_files(self):
175
# The only files returned by this are those from the version
176
for path, entry in self.inventory.iter_entries():
177
yield path, 'V', entry.kind, entry.file_id, entry
179
def get_symlink_target(self, file_id):
180
ie = self._inventory[file_id]
181
return ie.symlink_target;
183
def kind(self, file_id):
184
return self._inventory[file_id].kind
187
self._branch.lock_read()
190
self._branch.unlock()
214
from bzrlib.revisiontree import RevisionTree
193
217
class EmptyTree(Tree):
194
219
def __init__(self):
195
220
self._inventory = Inventory()
221
warn('EmptyTree is deprecated as of bzr 0.9 please use '
222
'repository.revision_tree instead.',
223
DeprecationWarning, stacklevel=2)
225
def get_parent_ids(self):
197
228
def get_symlink_target(self, file_id):
280
310
yield (old_name, new_name)
313
def find_ids_across_trees(filenames, trees, require_versioned=True):
314
"""Find the ids corresponding to specified filenames.
316
All matches in all trees will be used, and all children of matched
317
directories will be used.
319
:param filenames: The filenames to find file_ids for
320
:param trees: The trees to find file_ids within
321
:param require_versioned: if true, all specified filenames must occur in
323
:return: a set of file ids for the specified filenames and their children.
327
specified_ids = _find_filename_ids_across_trees(filenames, trees,
329
return _find_children_across_trees(specified_ids, trees)
332
def _find_filename_ids_across_trees(filenames, trees, require_versioned):
333
"""Find the ids corresponding to specified filenames.
335
All matches in all trees will be used.
337
:param filenames: The filenames to find file_ids for
338
:param trees: The trees to find file_ids within
339
:param require_versioned: if true, all specified filenames must occur in
341
:return: a set of file ids for the specified filenames
344
interesting_ids = set()
345
for tree_path in filenames:
348
file_id = tree.inventory.path2id(tree_path)
349
if file_id is not None:
350
interesting_ids.add(file_id)
353
not_versioned.append(tree_path)
354
if len(not_versioned) > 0 and require_versioned:
355
raise errors.PathsNotVersionedError(not_versioned)
356
return interesting_ids
359
def _find_children_across_trees(specified_ids, trees):
360
"""Return a set including specified ids and their children
362
All matches in all trees will be used.
364
:param trees: The trees to find file_ids within
365
:return: a set containing all specified ids and their children
367
interesting_ids = set(specified_ids)
368
pending = interesting_ids
369
# now handle children of interesting ids
370
# we loop so that we handle all children of each id in both trees
371
while len(pending) > 0:
373
for file_id in pending:
375
if file_id not in tree:
377
entry = tree.inventory[file_id]
378
for child in getattr(entry, 'children', {}).itervalues():
379
if child.file_id not in interesting_ids:
380
new_pending.add(child.file_id)
381
interesting_ids.update(new_pending)
382
pending = new_pending
383
return interesting_ids
386
class InterTree(InterObject):
387
"""This class represents operations taking place between two Trees.
389
Its instances have methods like 'compare' and contain references to the
390
source and target trees these operations are to be carried out on.
392
clients of bzrlib should not need to use InterTree directly, rather they
393
should use the convenience methods on Tree such as 'Tree.compare()' which
394
will pass through to InterTree as appropriate.
400
def compare(self, want_unchanged=False, specific_files=None,
401
extra_trees=None, require_versioned=False):
402
"""Return the changes from source to target.
404
:return: A TreeDelta.
405
:param specific_files: An optional list of file paths to restrict the
406
comparison to. When mapping filenames to ids, all matches in all
407
trees (including optional extra_trees) are used, and all children of
408
matched directories are included.
409
:param want_unchanged: An optional boolean requesting the inclusion of
410
unchanged entries in the result.
411
:param extra_trees: An optional list of additional trees to use when
412
mapping the contents of specific_files (paths) to file_ids.
413
:param require_versioned: An optional boolean (defaults to False). When
414
supplied and True all the 'specific_files' must be versioned, or
415
a PathsNotVersionedError will be thrown.
417
# NB: show_status depends on being able to pass in non-versioned files and
418
# report them as unknown
419
trees = (self.source, self.target)
420
if extra_trees is not None:
421
trees = trees + tuple(extra_trees)
422
specific_file_ids = find_ids_across_trees(specific_files,
423
trees, require_versioned=require_versioned)
424
if specific_files and not specific_file_ids:
425
# All files are unversioned, so just return an empty delta
426
# _compare_trees would think we want a complete delta
427
return delta.TreeDelta()
428
return delta._compare_trees(self.source, self.target, want_unchanged,
added
removed
bzrlib/tree.py
