263
@deprecated_function(zero_eight)
264
def show_diff(b, from_spec, specific_files, external_diff_options=None,
265
revision2=None, output=None, b2=None):
266
"""Shortcut for showing the diff to the working tree.
268
Please use show_diff_trees instead.
274
None for 'basis tree', or otherwise the old revision to compare against.
276
The more general form is show_diff_trees(), where the caller
277
supplies any two trees.
282
if from_spec is None:
283
old_tree = b.bzrdir.open_workingtree()
285
old_tree = old_tree = old_tree.basis_tree()
287
old_tree = b.repository.revision_tree(from_spec.in_history(b).rev_id)
289
if revision2 is None:
291
new_tree = b.bzrdir.open_workingtree()
293
new_tree = b2.bzrdir.open_workingtree()
295
new_tree = b.repository.revision_tree(revision2.in_history(b).rev_id)
297
return show_diff_trees(old_tree, new_tree, output, specific_files,
298
external_diff_options)
301
def diff_cmd_helper(tree, specific_files, external_diff_options,
302
old_revision_spec=None, new_revision_spec=None,
303
old_label='a/', new_label='b/'):
304
"""Helper for cmd_diff.
310
The specific files to compare, or None
312
external_diff_options
313
If non-None, run an external diff, and pass it these options
316
If None, use basis tree as old revision, otherwise use the tree for
317
the specified revision.
320
If None, use working tree as new revision, otherwise use the tree for
321
the specified revision.
323
The more general form is show_diff_trees(), where the caller
324
supplies any two trees.
328
revision = spec.in_store(tree.branch)
330
revision = spec.in_store(None)
331
revision_id = revision.rev_id
332
branch = revision.branch
333
return branch.repository.revision_tree(revision_id)
334
if old_revision_spec is None:
335
old_tree = tree.basis_tree()
337
old_tree = spec_tree(old_revision_spec)
339
if new_revision_spec is None:
342
new_tree = spec_tree(new_revision_spec)
343
if new_tree is not tree:
344
extra_trees = (tree,)
348
return show_diff_trees(old_tree, new_tree, sys.stdout, specific_files,
349
external_diff_options,
350
old_label=old_label, new_label=new_label,
351
extra_trees=extra_trees)
289
def get_trees_and_branches_to_diff(path_list, revision_specs, old_url, new_url,
291
"""Get the trees and specific files to diff given a list of paths.
293
This method works out the trees to be diff'ed and the files of
294
interest within those trees.
297
the list of arguments passed to the diff command
298
:param revision_specs:
299
Zero, one or two RevisionSpecs from the diff command line,
300
saying what revisions to compare.
302
The url of the old branch or tree. If None, the tree to use is
303
taken from the first path, if any, or the current working tree.
305
The url of the new branch or tree. If None, the tree to use is
306
taken from the first path, if any, or the current working tree.
308
if True and a view is set, apply the view or check that the paths
311
a tuple of (old_tree, new_tree, old_branch, new_branch,
312
specific_files, extra_trees) where extra_trees is a sequence of
313
additional trees to search in for file-ids.
315
# Get the old and new revision specs
316
old_revision_spec = None
317
new_revision_spec = None
318
if revision_specs is not None:
319
if len(revision_specs) > 0:
320
old_revision_spec = revision_specs[0]
322
old_url = old_revision_spec.get_branch()
323
if len(revision_specs) > 1:
324
new_revision_spec = revision_specs[1]
326
new_url = new_revision_spec.get_branch()
329
make_paths_wt_relative = True
330
consider_relpath = True
331
if path_list is None or len(path_list) == 0:
332
# If no path is given, the current working tree is used
333
default_location = u'.'
334
consider_relpath = False
335
elif old_url is not None and new_url is not None:
336
other_paths = path_list
337
make_paths_wt_relative = False
339
default_location = path_list[0]
340
other_paths = path_list[1:]
342
# Get the old location
345
old_url = default_location
346
working_tree, branch, relpath = \
347
bzrdir.BzrDir.open_containing_tree_or_branch(old_url)
348
if consider_relpath and relpath != '':
349
if working_tree is not None and apply_view:
350
views.check_path_in_view(working_tree, relpath)
351
specific_files.append(relpath)
352
old_tree = _get_tree_to_diff(old_revision_spec, working_tree, branch)
355
# Get the new location
357
new_url = default_location
358
if new_url != old_url:
359
working_tree, branch, relpath = \
360
bzrdir.BzrDir.open_containing_tree_or_branch(new_url)
361
if consider_relpath and relpath != '':
362
if working_tree is not None and apply_view:
363
views.check_path_in_view(working_tree, relpath)
364
specific_files.append(relpath)
365
new_tree = _get_tree_to_diff(new_revision_spec, working_tree, branch,
366
basis_is_default=working_tree is None)
369
# Get the specific files (all files is None, no files is [])
370
if make_paths_wt_relative and working_tree is not None:
372
from bzrlib.builtins import safe_relpath_files
373
other_paths = safe_relpath_files(working_tree, other_paths,
374
apply_view=apply_view)
375
except errors.FileInWrongBranch:
376
raise errors.BzrCommandError("Files are in different branches")
377
specific_files.extend(other_paths)
378
if len(specific_files) == 0:
379
specific_files = None
380
if (working_tree is not None and working_tree.supports_views()
382
view_files = working_tree.views.lookup_view()
384
specific_files = view_files
385
view_str = views.view_display_str(view_files)
386
note("*** Ignoring files outside view. View is %s" % view_str)
388
# Get extra trees that ought to be searched for file-ids
390
if working_tree is not None and working_tree not in (old_tree, new_tree):
391
extra_trees = (working_tree,)
392
return old_tree, new_tree, old_branch, new_branch, specific_files, extra_trees
395
def _get_tree_to_diff(spec, tree=None, branch=None, basis_is_default=True):
396
if branch is None and tree is not None:
398
if spec is None or spec.spec is None:
401
return tree.basis_tree()
403
return branch.basis_tree()
406
return spec.as_tree(branch)
354
409
def show_diff_trees(old_tree, new_tree, to_file, specific_files=None,
355
410
external_diff_options=None,
356
411
old_label='a/', new_label='b/',
413
path_encoding='utf8',
358
415
"""Show in text form the changes from one tree to another.
361
If set, include only changes to these files.
421
Include only changes to these files - None for all changes.
363
423
external_diff_options
364
424
If set, use an external GNU diff and pass these options.
367
427
If set, more Trees to use for looking up file ids
430
If set, the path will be encoded as specified, otherwise is supposed
369
433
old_tree.lock_read()
435
if extra_trees is not None:
436
for tree in extra_trees:
371
438
new_tree.lock_read()
373
return _show_diff_trees(old_tree, new_tree, to_file,
374
specific_files, external_diff_options,
375
old_label=old_label, new_label=new_label,
376
extra_trees=extra_trees)
440
differ = DiffTree.from_trees_options(old_tree, new_tree, to_file,
442
external_diff_options,
443
old_label, new_label, using)
444
return differ.show_diff(specific_files, extra_trees)
378
446
new_tree.unlock()
447
if extra_trees is not None:
448
for tree in extra_trees:
380
451
old_tree.unlock()
383
def _show_diff_trees(old_tree, new_tree, to_file,
384
specific_files, external_diff_options,
385
old_label='a/', new_label='b/', extra_trees=None):
454
def _patch_header_date(tree, file_id, path):
455
"""Returns a timestamp suitable for use in a patch header."""
457
mtime = tree.get_file_mtime(file_id, path)
458
except errors.FileTimestampUnavailable:
460
return timestamp.format_patch_date(mtime)
463
def get_executable_change(old_is_x, new_is_x):
464
descr = { True:"+x", False:"-x", None:"??" }
465
if old_is_x != new_is_x:
466
return ["%s to %s" % (descr[old_is_x], descr[new_is_x],)]
471
class DiffPath(object):
472
"""Base type for command object that compare files"""
474
# The type or contents of the file were unsuitable for diffing
475
CANNOT_DIFF = 'CANNOT_DIFF'
476
# The file has changed in a semantic way
478
# The file content may have changed, but there is no semantic change
479
UNCHANGED = 'UNCHANGED'
481
def __init__(self, old_tree, new_tree, to_file, path_encoding='utf-8'):
484
:param old_tree: The tree to show as the old tree in the comparison
485
:param new_tree: The tree to show as new in the comparison
486
:param to_file: The file to write comparison data to
487
:param path_encoding: The character encoding to write paths in
489
self.old_tree = old_tree
490
self.new_tree = new_tree
491
self.to_file = to_file
492
self.path_encoding = path_encoding
498
def from_diff_tree(klass, diff_tree):
499
return klass(diff_tree.old_tree, diff_tree.new_tree,
500
diff_tree.to_file, diff_tree.path_encoding)
503
def _diff_many(differs, file_id, old_path, new_path, old_kind, new_kind):
504
for file_differ in differs:
505
result = file_differ.diff(file_id, old_path, new_path, old_kind,
507
if result is not DiffPath.CANNOT_DIFF:
510
return DiffPath.CANNOT_DIFF
513
class DiffKindChange(object):
514
"""Special differ for file kind changes.
516
Represents kind change as deletion + creation. Uses the other differs
519
def __init__(self, differs):
520
self.differs = differs
526
def from_diff_tree(klass, diff_tree):
527
return klass(diff_tree.differs)
529
def diff(self, file_id, old_path, new_path, old_kind, new_kind):
530
"""Perform comparison
532
:param file_id: The file_id of the file to compare
533
:param old_path: Path of the file in the old tree
534
:param new_path: Path of the file in the new tree
535
:param old_kind: Old file-kind of the file
536
:param new_kind: New file-kind of the file
538
if None in (old_kind, new_kind):
539
return DiffPath.CANNOT_DIFF
540
result = DiffPath._diff_many(self.differs, file_id, old_path,
541
new_path, old_kind, None)
542
if result is DiffPath.CANNOT_DIFF:
544
return DiffPath._diff_many(self.differs, file_id, old_path, new_path,
548
class DiffDirectory(DiffPath):
550
def diff(self, file_id, old_path, new_path, old_kind, new_kind):
551
"""Perform comparison between two directories. (dummy)
554
if 'directory' not in (old_kind, new_kind):
555
return self.CANNOT_DIFF
556
if old_kind not in ('directory', None):
557
return self.CANNOT_DIFF
558
if new_kind not in ('directory', None):
559
return self.CANNOT_DIFF
563
class DiffSymlink(DiffPath):
565
def diff(self, file_id, old_path, new_path, old_kind, new_kind):
566
"""Perform comparison between two symlinks
568
:param file_id: The file_id of the file to compare
569
:param old_path: Path of the file in the old tree
570
:param new_path: Path of the file in the new tree
571
:param old_kind: Old file-kind of the file
572
:param new_kind: New file-kind of the file
574
if 'symlink' not in (old_kind, new_kind):
575
return self.CANNOT_DIFF
576
if old_kind == 'symlink':
577
old_target = self.old_tree.get_symlink_target(file_id)
578
elif old_kind is None:
581
return self.CANNOT_DIFF
582
if new_kind == 'symlink':
583
new_target = self.new_tree.get_symlink_target(file_id)
584
elif new_kind is None:
587
return self.CANNOT_DIFF
588
return self.diff_symlink(old_target, new_target)
590
def diff_symlink(self, old_target, new_target):
591
if old_target is None:
592
self.to_file.write('=== target is %r\n' % new_target)
593
elif new_target is None:
594
self.to_file.write('=== target was %r\n' % old_target)
596
self.to_file.write('=== target changed %r => %r\n' %
597
(old_target, new_target))
601
class DiffText(DiffPath):
387
603
# GNU Patch uses the epoch date to detect files that are being added
388
604
# or removed in a diff.
389
605
EPOCH_DATE = '1970-01-01 00:00:00 +0000'
391
# TODO: Generation of pseudo-diffs for added/deleted files could
392
# be usefully made into a much faster special case.
394
if external_diff_options:
395
assert isinstance(external_diff_options, basestring)
396
opts = external_diff_options.split()
397
def diff_file(olab, olines, nlab, nlines, to_file):
398
external_diff(olab, olines, nlab, nlines, to_file, opts)
400
diff_file = internal_diff
402
delta = new_tree.changes_from(old_tree,
403
specific_files=specific_files,
404
extra_trees=extra_trees, require_versioned=True)
407
for path, file_id, kind in delta.removed:
409
print >>to_file, '=== removed %s %r' % (kind, path.encode('utf8'))
410
old_name = '%s%s\t%s' % (old_label, path,
411
_patch_header_date(old_tree, file_id, path))
412
new_name = '%s%s\t%s' % (new_label, path, EPOCH_DATE)
413
old_tree.inventory[file_id].diff(diff_file, old_name, old_tree,
414
new_name, None, None, to_file)
415
for path, file_id, kind in delta.added:
417
print >>to_file, '=== added %s %r' % (kind, path.encode('utf8'))
418
old_name = '%s%s\t%s' % (old_label, path, EPOCH_DATE)
419
new_name = '%s%s\t%s' % (new_label, path,
420
_patch_header_date(new_tree, file_id, path))
421
new_tree.inventory[file_id].diff(diff_file, new_name, new_tree,
422
old_name, None, None, to_file,
424
for (old_path, new_path, file_id, kind,
425
text_modified, meta_modified) in delta.renamed:
427
prop_str = get_prop_change(meta_modified)
428
print >>to_file, '=== renamed %s %r => %r%s' % (
429
kind, old_path.encode('utf8'),
430
new_path.encode('utf8'), prop_str)
431
old_name = '%s%s\t%s' % (old_label, old_path,
432
_patch_header_date(old_tree, file_id,
434
new_name = '%s%s\t%s' % (new_label, new_path,
435
_patch_header_date(new_tree, file_id,
437
_maybe_diff_file_or_symlink(old_name, old_tree, file_id,
439
text_modified, kind, to_file, diff_file)
440
for path, file_id, kind, text_modified, meta_modified in delta.modified:
442
prop_str = get_prop_change(meta_modified)
443
print >>to_file, '=== modified %s %r%s' % (kind, path.encode('utf8'), prop_str)
444
old_name = '%s%s\t%s' % (old_label, path,
445
_patch_header_date(old_tree, file_id, path))
446
new_name = '%s%s\t%s' % (new_label, path,
447
_patch_header_date(new_tree, file_id, path))
449
_maybe_diff_file_or_symlink(old_name, old_tree, file_id,
451
True, kind, to_file, diff_file)
456
def _patch_header_date(tree, file_id, path):
457
"""Returns a timestamp suitable for use in a patch header."""
458
tm = time.gmtime(tree.get_file_mtime(file_id, path))
459
return time.strftime('%Y-%m-%d %H:%M:%S +0000', tm)
462
def _raise_if_nonexistent(paths, old_tree, new_tree):
463
"""Complain if paths are not in either inventory or tree.
465
It's OK with the files exist in either tree's inventory, or
466
if they exist in the tree but are not versioned.
468
This can be used by operations such as bzr status that can accept
469
unknown or ignored files.
607
def __init__(self, old_tree, new_tree, to_file, path_encoding='utf-8',
608
old_label='', new_label='', text_differ=internal_diff):
609
DiffPath.__init__(self, old_tree, new_tree, to_file, path_encoding)
610
self.text_differ = text_differ
611
self.old_label = old_label
612
self.new_label = new_label
613
self.path_encoding = path_encoding
615
def diff(self, file_id, old_path, new_path, old_kind, new_kind):
616
"""Compare two files in unified diff format
618
:param file_id: The file_id of the file to compare
619
:param old_path: Path of the file in the old tree
620
:param new_path: Path of the file in the new tree
621
:param old_kind: Old file-kind of the file
622
:param new_kind: New file-kind of the file
624
if 'file' not in (old_kind, new_kind):
625
return self.CANNOT_DIFF
626
from_file_id = to_file_id = file_id
627
if old_kind == 'file':
628
old_date = _patch_header_date(self.old_tree, file_id, old_path)
629
elif old_kind is None:
630
old_date = self.EPOCH_DATE
633
return self.CANNOT_DIFF
634
if new_kind == 'file':
635
new_date = _patch_header_date(self.new_tree, file_id, new_path)
636
elif new_kind is None:
637
new_date = self.EPOCH_DATE
640
return self.CANNOT_DIFF
641
from_label = '%s%s\t%s' % (self.old_label, old_path, old_date)
642
to_label = '%s%s\t%s' % (self.new_label, new_path, new_date)
643
return self.diff_text(from_file_id, to_file_id, from_label, to_label,
646
def diff_text(self, from_file_id, to_file_id, from_label, to_label,
647
from_path=None, to_path=None):
648
"""Diff the content of given files in two trees
650
:param from_file_id: The id of the file in the from tree. If None,
651
the file is not present in the from tree.
652
:param to_file_id: The id of the file in the to tree. This may refer
653
to a different file from from_file_id. If None,
654
the file is not present in the to tree.
655
:param from_path: The path in the from tree or None if unknown.
656
:param to_path: The path in the to tree or None if unknown.
658
def _get_text(tree, file_id, path):
659
if file_id is not None:
660
return tree.get_file(file_id, path).readlines()
664
from_text = _get_text(self.old_tree, from_file_id, from_path)
665
to_text = _get_text(self.new_tree, to_file_id, to_path)
666
self.text_differ(from_label, from_text, to_label, to_text,
668
except errors.BinaryFile:
670
("Binary files %s and %s differ\n" %
671
(from_label, to_label)).encode(self.path_encoding))
675
class DiffFromTool(DiffPath):
677
def __init__(self, command_template, old_tree, new_tree, to_file,
678
path_encoding='utf-8'):
679
DiffPath.__init__(self, old_tree, new_tree, to_file, path_encoding)
680
self.command_template = command_template
681
self._root = osutils.mkdtemp(prefix='bzr-diff-')
684
def from_string(klass, command_string, old_tree, new_tree, to_file,
685
path_encoding='utf-8'):
686
command_template = cmdline.split(command_string)
687
if '@' not in command_string:
688
command_template.extend(['@old_path', '@new_path'])
689
return klass(command_template, old_tree, new_tree, to_file,
693
def make_from_diff_tree(klass, command_string):
694
def from_diff_tree(diff_tree):
695
return klass.from_string(command_string, diff_tree.old_tree,
696
diff_tree.new_tree, diff_tree.to_file)
697
return from_diff_tree
699
def _get_command(self, old_path, new_path):
700
my_map = {'old_path': old_path, 'new_path': new_path}
701
return [AtTemplate(t).substitute(my_map) for t in
702
self.command_template]
704
def _execute(self, old_path, new_path):
705
command = self._get_command(old_path, new_path)
707
proc = subprocess.Popen(command, stdout=subprocess.PIPE,
710
if e.errno == errno.ENOENT:
711
raise errors.ExecutableMissing(command[0])
714
self.to_file.write(proc.stdout.read())
717
def _try_symlink_root(self, tree, prefix):
718
if (getattr(tree, 'abspath', None) is None
719
or not osutils.host_os_dereferences_symlinks()):
722
os.symlink(tree.abspath(''), osutils.pathjoin(self._root, prefix))
724
if e.errno != errno.EEXIST:
728
def _write_file(self, file_id, tree, prefix, relpath, force_temp=False,
730
if not force_temp and isinstance(tree, WorkingTree):
731
return tree.abspath(tree.id2path(file_id))
733
full_path = osutils.pathjoin(self._root, prefix, relpath)
734
if not force_temp and self._try_symlink_root(tree, prefix):
736
parent_dir = osutils.dirname(full_path)
738
os.makedirs(parent_dir)
740
if e.errno != errno.EEXIST:
742
source = tree.get_file(file_id, relpath)
744
target = open(full_path, 'wb')
746
osutils.pumpfile(source, target)
752
osutils.make_readonly(full_path)
754
mtime = tree.get_file_mtime(file_id)
755
except errors.FileTimestampUnavailable:
757
os.utime(full_path, (mtime, mtime))
760
def _prepare_files(self, file_id, old_path, new_path, force_temp=False,
761
allow_write_new=False):
762
old_disk_path = self._write_file(file_id, self.old_tree, 'old',
763
old_path, force_temp)
764
new_disk_path = self._write_file(file_id, self.new_tree, 'new',
765
new_path, force_temp,
766
allow_write=allow_write_new)
767
return old_disk_path, new_disk_path
771
osutils.rmtree(self._root)
773
if e.errno != errno.ENOENT:
774
mutter("The temporary directory \"%s\" was not "
775
"cleanly removed: %s." % (self._root, e))
777
def diff(self, file_id, old_path, new_path, old_kind, new_kind):
778
if (old_kind, new_kind) != ('file', 'file'):
779
return DiffPath.CANNOT_DIFF
780
(old_disk_path, new_disk_path) = self._prepare_files(
781
file_id, old_path, new_path)
782
self._execute(old_disk_path, new_disk_path)
784
def edit_file(self, file_id):
785
"""Use this tool to edit a file.
787
A temporary copy will be edited, and the new contents will be
790
:param file_id: The id of the file to edit.
791
:return: The new contents of the file.
793
old_path = self.old_tree.id2path(file_id)
794
new_path = self.new_tree.id2path(file_id)
795
new_abs_path = self._prepare_files(file_id, old_path, new_path,
796
allow_write_new=True,
798
command = self._get_command(osutils.pathjoin('old', old_path),
799
osutils.pathjoin('new', new_path))
800
subprocess.call(command, cwd=self._root)
801
new_file = open(new_abs_path, 'r')
803
return new_file.read()
808
class DiffTree(object):
809
"""Provides textual representations of the difference between two trees.
811
A DiffTree examines two trees and where a file-id has altered
812
between them, generates a textual representation of the difference.
813
DiffTree uses a sequence of DiffPath objects which are each
814
given the opportunity to handle a given altered fileid. The list
815
of DiffPath objects can be extended globally by appending to
816
DiffTree.diff_factories, or for a specific diff operation by
817
supplying the extra_factories option to the appropriate method.
471
mutter("check paths: %r", paths)
474
s = old_tree.filter_unversioned_files(paths)
475
s = new_tree.filter_unversioned_files(s)
476
s = [path for path in s if not new_tree.has_filename(path)]
478
raise errors.PathsDoNotExist(sorted(s))
481
def get_prop_change(meta_modified):
483
return " (properties changed)"
488
def _maybe_diff_file_or_symlink(old_path, old_tree, file_id,
489
new_path, new_tree, text_modified,
490
kind, to_file, diff_file):
492
new_entry = new_tree.inventory[file_id]
493
old_tree.inventory[file_id].diff(diff_file,
820
# list of factories that can provide instances of DiffPath objects
821
# may be extended by plugins.
822
diff_factories = [DiffSymlink.from_diff_tree,
823
DiffDirectory.from_diff_tree]
825
def __init__(self, old_tree, new_tree, to_file, path_encoding='utf-8',
826
diff_text=None, extra_factories=None):
829
:param old_tree: Tree to show as old in the comparison
830
:param new_tree: Tree to show as new in the comparison
831
:param to_file: File to write comparision to
832
:param path_encoding: Character encoding to write paths in
833
:param diff_text: DiffPath-type object to use as a last resort for
835
:param extra_factories: Factories of DiffPaths to try before any other
837
if diff_text is None:
838
diff_text = DiffText(old_tree, new_tree, to_file, path_encoding,
839
'', '', internal_diff)
840
self.old_tree = old_tree
841
self.new_tree = new_tree
842
self.to_file = to_file
843
self.path_encoding = path_encoding
845
if extra_factories is not None:
846
self.differs.extend(f(self) for f in extra_factories)
847
self.differs.extend(f(self) for f in self.diff_factories)
848
self.differs.extend([diff_text, DiffKindChange.from_diff_tree(self)])
851
def from_trees_options(klass, old_tree, new_tree, to_file,
852
path_encoding, external_diff_options, old_label,
854
"""Factory for producing a DiffTree.
856
Designed to accept options used by show_diff_trees.
857
:param old_tree: The tree to show as old in the comparison
858
:param new_tree: The tree to show as new in the comparison
859
:param to_file: File to write comparisons to
860
:param path_encoding: Character encoding to use for writing paths
861
:param external_diff_options: If supplied, use the installed diff
862
binary to perform file comparison, using supplied options.
863
:param old_label: Prefix to use for old file labels
864
:param new_label: Prefix to use for new file labels
865
:param using: Commandline to use to invoke an external diff tool
867
if using is not None:
868
extra_factories = [DiffFromTool.make_from_diff_tree(using)]
871
if external_diff_options:
872
opts = external_diff_options.split()
873
def diff_file(olab, olines, nlab, nlines, to_file):
874
external_diff(olab, olines, nlab, nlines, to_file, opts)
876
diff_file = internal_diff
877
diff_text = DiffText(old_tree, new_tree, to_file, path_encoding,
878
old_label, new_label, diff_file)
879
return klass(old_tree, new_tree, to_file, path_encoding, diff_text,
882
def show_diff(self, specific_files, extra_trees=None):
883
"""Write tree diff to self.to_file
885
:param sepecific_files: the specific files to compare (recursive)
886
:param extra_trees: extra trees to use for mapping paths to file_ids
889
return self._show_diff(specific_files, extra_trees)
891
for differ in self.differs:
894
def _show_diff(self, specific_files, extra_trees):
895
# TODO: Generation of pseudo-diffs for added/deleted files could
896
# be usefully made into a much faster special case.
897
iterator = self.new_tree.iter_changes(self.old_tree,
898
specific_files=specific_files,
899
extra_trees=extra_trees,
900
require_versioned=True)
902
def changes_key(change):
903
old_path, new_path = change[1]
908
def get_encoded_path(path):
910
return path.encode(self.path_encoding, "replace")
911
for (file_id, paths, changed_content, versioned, parent, name, kind,
912
executable) in sorted(iterator, key=changes_key):
913
# The root does not get diffed, and items with no known kind (that
914
# is, missing) in both trees are skipped as well.
915
if parent == (None, None) or kind == (None, None):
917
oldpath, newpath = paths
918
oldpath_encoded = get_encoded_path(paths[0])
919
newpath_encoded = get_encoded_path(paths[1])
920
old_present = (kind[0] is not None and versioned[0])
921
new_present = (kind[1] is not None and versioned[1])
922
renamed = (parent[0], name[0]) != (parent[1], name[1])
924
properties_changed = []
925
properties_changed.extend(get_executable_change(executable[0], executable[1]))
927
if properties_changed:
928
prop_str = " (properties changed: %s)" % (", ".join(properties_changed),)
932
if (old_present, new_present) == (True, False):
933
self.to_file.write("=== removed %s '%s'\n" %
934
(kind[0], oldpath_encoded))
936
elif (old_present, new_present) == (False, True):
937
self.to_file.write("=== added %s '%s'\n" %
938
(kind[1], newpath_encoded))
941
self.to_file.write("=== renamed %s '%s' => '%s'%s\n" %
942
(kind[0], oldpath_encoded, newpath_encoded, prop_str))
944
# if it was produced by iter_changes, it must be
945
# modified *somehow*, either content or execute bit.
946
self.to_file.write("=== modified %s '%s'%s\n" % (kind[0],
947
newpath_encoded, prop_str))
949
self._diff(file_id, oldpath, newpath, kind[0], kind[1])
955
def diff(self, file_id, old_path, new_path):
956
"""Perform a diff of a single file
958
:param file_id: file-id of the file
959
:param old_path: The path of the file in the old tree
960
:param new_path: The path of the file in the new tree
963
old_kind = self.old_tree.kind(file_id)
964
except (errors.NoSuchId, errors.NoSuchFile):
967
new_kind = self.new_tree.kind(file_id)
968
except (errors.NoSuchId, errors.NoSuchFile):
970
self._diff(file_id, old_path, new_path, old_kind, new_kind)
973
def _diff(self, file_id, old_path, new_path, old_kind, new_kind):
974
result = DiffPath._diff_many(self.differs, file_id, old_path,
975
new_path, old_kind, new_kind)
976
if result is DiffPath.CANNOT_DIFF:
977
error_path = new_path
978
if error_path is None:
979
error_path = old_path
980
raise errors.NoDiffFound(error_path)
added
removed
bzrlib/diff.py
