51
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)
54
102
def has_filename(self, filename):
55
103
"""True if the tree has given filename."""
56
104
raise NotImplementedError()
107
165
"""Print file with id `file_id` to stdout."""
109
167
sys.stdout.write(self.get_file_text(file_id))
112
def export(self, dest, format='dir', root=None):
113
"""Export this tree."""
115
exporter = exporters[format]
117
from bzrlib.errors import BzrCommandError
118
raise BzrCommandError("export format %r not supported" % format)
119
exporter(self, dest, root)
123
class RevisionTree(Tree):
124
"""Tree viewing a previous revision.
126
File text can be retrieved from the text store.
128
TODO: Some kind of `__repr__` method, but a good one
129
probably means knowing the branch and revision number,
130
or at least passing a description to the constructor.
133
def __init__(self, weave_store, inv, revision_id):
134
self._weave_store = weave_store
135
self._inventory = inv
136
self._revision_id = revision_id
138
def get_weave(self, file_id):
139
# FIXME: RevisionTree should be given a branch
140
# not a store, or the store should know the branch.
141
import bzrlib.transactions as transactions
142
return self._weave_store.get_weave(file_id,
143
transactions.PassThroughTransaction())
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(ie.revision)
152
def get_file_text(self, file_id):
153
return ''.join(self.get_file_lines(file_id))
156
def get_file(self, file_id):
157
return StringIO(self.get_file_text(file_id))
159
def get_file_size(self, file_id):
160
return self._inventory[file_id].text_size
162
def get_file_sha1(self, file_id):
163
ie = self._inventory[file_id]
164
if ie.kind == "file":
167
def is_executable(self, file_id):
168
ie = self._inventory[file_id]
169
if ie.kind != "file":
171
return self._inventory[file_id].executable
173
def has_filename(self, filename):
174
return bool(self.inventory.path2id(filename))
176
def list_files(self):
177
# The only files returned by this are those from the version
178
for path, entry in self.inventory.iter_entries():
179
yield path, 'V', entry.kind, entry.file_id, entry
181
def get_symlink_target(self, file_id):
182
ie = self._inventory[file_id]
183
return ie.symlink_target;
185
def kind(self, file_id):
186
return self._inventory[file_id].kind
173
"""What files are present in this tree and unknown.
175
:return: an iterator over the unknown files.
182
def filter_unversioned_files(self, paths):
183
"""Filter out paths that are not versioned.
185
:return: set of paths.
187
# NB: we specifically *don't* call self.has_filename, because for
188
# WorkingTrees that can indicate files that exist on disk but that
190
pred = self.inventory.has_filename
191
return set((p for p in paths if not pred(p)))
195
from bzrlib.revisiontree import RevisionTree
189
198
class EmptyTree(Tree):
190
200
def __init__(self):
191
201
self._inventory = Inventory()
202
warn('EmptyTree is deprecated as of bzr 0.9 please use '
203
'repository.revision_tree instead.',
204
DeprecationWarning, stacklevel=2)
206
def get_parent_ids(self):
193
209
def get_symlink_target(self, file_id):
276
291
yield (old_name, new_name)
280
######################################################################
283
def dir_exporter(tree, dest, root):
284
"""Export this tree to a new directory.
286
`dest` should not exist, and will be created holding the
287
contents of this tree.
289
TODO: To handle subdirectories we need to create the
292
:note: If the export fails, the destination directory will be
293
left in a half-assed state.
297
mutter('export version %r' % tree)
299
for dp, ie in inv.iter_entries():
300
ie.put_on_disk(dest, dp, tree)
302
exporters['dir'] = dir_exporter
309
def get_root_name(dest):
310
"""Get just the root name for a tarball.
312
>>> get_root_name('mytar.tar')
314
>>> get_root_name('mytar.tar.bz2')
316
>>> get_root_name('tar.tar.tar.tgz')
318
>>> get_root_name('bzr-0.0.5.tar.gz')
320
>>> get_root_name('a/long/path/mytar.tgz')
322
>>> get_root_name('../parent/../dir/other.tbz2')
325
endings = ['.tar', '.tar.gz', '.tgz', '.tar.bz2', '.tbz2']
326
dest = os.path.basename(dest)
328
if dest.endswith(end):
329
return dest[:-len(end)]
331
def tar_exporter(tree, dest, root, compression=None):
332
"""Export this tree to a new tar file.
334
`dest` will be created holding the contents of this tree; if it
335
already exists, it will be clobbered, like with "tar -c".
337
from time import time
339
compression = str(compression or '')
341
root = get_root_name(dest)
343
ball = tarfile.open(dest, 'w:' + compression)
344
except tarfile.CompressionError, e:
345
raise BzrError(str(e))
346
mutter('export version %r' % tree)
348
for dp, ie in inv.iter_entries():
349
mutter(" export {%s} kind %s to %s" % (ie.file_id, ie.kind, dest))
350
item, fileobj = ie.get_tar_item(root, dp, now, tree)
351
ball.addfile(item, fileobj)
354
exporters['tar'] = tar_exporter
356
def tgz_exporter(tree, dest, root):
357
tar_exporter(tree, dest, root, compression='gz')
358
exporters['tgz'] = tgz_exporter
360
def tbz_exporter(tree, dest, root):
361
tar_exporter(tree, dest, root, compression='bz2')
362
exporters['tbz2'] = tbz_exporter
294
def find_ids_across_trees(filenames, trees, require_versioned=True):
295
"""Find the ids corresponding to specified filenames.
297
All matches in all trees will be used, and all children of matched
298
directories will be used.
300
:param filenames: The filenames to find file_ids for
301
:param trees: The trees to find file_ids within
302
:param require_versioned: if true, all specified filenames must occur in
304
:return: a set of file ids for the specified filenames and their children.
308
specified_ids = _find_filename_ids_across_trees(filenames, trees,
310
return _find_children_across_trees(specified_ids, trees)
313
def _find_filename_ids_across_trees(filenames, trees, require_versioned):
314
"""Find the ids corresponding to specified filenames.
316
All matches in all trees will be used.
318
:param filenames: The filenames to find file_ids for
319
:param trees: The trees to find file_ids within
320
:param require_versioned: if true, all specified filenames must occur in
322
:return: a set of file ids for the specified filenames
325
interesting_ids = set()
326
for tree_path in filenames:
329
file_id = tree.inventory.path2id(tree_path)
330
if file_id is not None:
331
interesting_ids.add(file_id)
334
not_versioned.append(tree_path)
335
if len(not_versioned) > 0 and require_versioned:
336
raise errors.PathsNotVersionedError(not_versioned)
337
return interesting_ids
340
def _find_children_across_trees(specified_ids, trees):
341
"""Return a set including specified ids and their children
343
All matches in all trees will be used.
345
:param trees: The trees to find file_ids within
346
:return: a set containing all specified ids and their children
348
interesting_ids = set(specified_ids)
349
pending = interesting_ids
350
# now handle children of interesting ids
351
# we loop so that we handle all children of each id in both trees
352
while len(pending) > 0:
354
for file_id in pending:
356
if file_id not in tree:
358
entry = tree.inventory[file_id]
359
for child in getattr(entry, 'children', {}).itervalues():
360
if child.file_id not in interesting_ids:
361
new_pending.add(child.file_id)
362
interesting_ids.update(new_pending)
363
pending = new_pending
364
return interesting_ids
367
class InterTree(InterObject):
368
"""This class represents operations taking place between two Trees.
370
Its instances have methods like 'compare' and contain references to the
371
source and target trees these operations are to be carried out on.
373
clients of bzrlib should not need to use InterTree directly, rather they
374
should use the convenience methods on Tree such as 'Tree.compare()' which
375
will pass through to InterTree as appropriate.
381
def compare(self, want_unchanged=False, specific_files=None,
382
extra_trees=None, require_versioned=False):
383
"""Return the changes from source to target.
385
:return: A TreeDelta.
386
:param specific_files: An optional list of file paths to restrict the
387
comparison to. When mapping filenames to ids, all matches in all
388
trees (including optional extra_trees) are used, and all children of
389
matched directories are included.
390
:param want_unchanged: An optional boolean requesting the inclusion of
391
unchanged entries in the result.
392
:param extra_trees: An optional list of additional trees to use when
393
mapping the contents of specific_files (paths) to file_ids.
394
:param require_versioned: An optional boolean (defaults to False). When
395
supplied and True all the 'specific_files' must be versioned, or
396
a PathsNotVersionedError will be thrown.
398
# NB: show_status depends on being able to pass in non-versioned files and
399
# report them as unknown
400
trees = (self.source, self.target)
401
if extra_trees is not None:
402
trees = trees + tuple(extra_trees)
403
specific_file_ids = find_ids_across_trees(specific_files,
404
trees, require_versioned=require_versioned)
405
if specific_files and not specific_file_ids:
406
# All files are unversioned, so just return an empty delta
407
# _compare_trees would think we want a complete delta
408
return delta.TreeDelta()
409
return delta._compare_trees(self.source, self.target, want_unchanged,
added
removed
bzrlib/tree.py
