291
def get_trees_and_branches_to_diff_locked(
292
path_list, revision_specs, old_url, new_url, add_cleanup, apply_view=True):
293
"""Get the trees and specific files to diff given a list of paths.
295
This method works out the trees to be diff'ed and the files of
296
interest within those trees.
299
the list of arguments passed to the diff command
300
:param revision_specs:
301
Zero, one or two RevisionSpecs from the diff command line,
302
saying what revisions to compare.
304
The url of the old branch or tree. If None, the tree to use is
305
taken from the first path, if any, or the current working tree.
307
The url of the new branch or tree. If None, the tree to use is
308
taken from the first path, if any, or the current working tree.
310
a callable like Command.add_cleanup. get_trees_and_branches_to_diff
311
will register cleanups that must be run to unlock the trees, etc.
313
if True and a view is set, apply the view or check that the paths
316
a tuple of (old_tree, new_tree, old_branch, new_branch,
317
specific_files, extra_trees) where extra_trees is a sequence of
318
additional trees to search in for file-ids. The trees and branches
319
will be read-locked until the cleanups registered via the add_cleanup
322
# Get the old and new revision specs
323
old_revision_spec = None
324
new_revision_spec = None
264
@deprecated_function(zero_eight)
265
def show_diff(b, from_spec, specific_files, external_diff_options=None,
266
revision2=None, output=None, b2=None):
267
"""Shortcut for showing the diff to the working tree.
269
Please use show_diff_trees instead.
275
None for 'basis tree', or otherwise the old revision to compare against.
277
The more general form is show_diff_trees(), where the caller
278
supplies any two trees.
283
if from_spec is None:
284
old_tree = b.bzrdir.open_workingtree()
286
old_tree = old_tree = old_tree.basis_tree()
288
old_tree = b.repository.revision_tree(from_spec.in_history(b).rev_id)
290
if revision2 is None:
292
new_tree = b.bzrdir.open_workingtree()
294
new_tree = b2.bzrdir.open_workingtree()
296
new_tree = b.repository.revision_tree(revision2.in_history(b).rev_id)
298
return show_diff_trees(old_tree, new_tree, output, specific_files,
299
external_diff_options)
302
def diff_cmd_helper(tree, specific_files, external_diff_options,
303
old_revision_spec=None, new_revision_spec=None,
305
old_label='a/', new_label='b/'):
306
"""Helper for cmd_diff.
311
:param specific_files:
312
The specific files to compare, or None
314
:param external_diff_options:
315
If non-None, run an external diff, and pass it these options
317
:param old_revision_spec:
318
If None, use basis tree as old revision, otherwise use the tree for
319
the specified revision.
321
:param new_revision_spec:
322
If None, use working tree as new revision, otherwise use the tree for
323
the specified revision.
325
:param revision_specs:
326
Zero, one or two RevisionSpecs from the command line, saying what revisions
327
to compare. This can be passed as an alternative to the old_revision_spec
328
and new_revision_spec parameters.
330
The more general form is show_diff_trees(), where the caller
331
supplies any two trees.
334
# TODO: perhaps remove the old parameters old_revision_spec and
335
# new_revision_spec, since this is only really for use from cmd_diff and
336
# it now always passes through a sequence of revision_specs -- mbp
341
revision = spec.in_store(tree.branch)
343
revision = spec.in_store(None)
344
revision_id = revision.rev_id
345
branch = revision.branch
346
return branch.repository.revision_tree(revision_id)
325
348
if revision_specs is not None:
349
assert (old_revision_spec is None
350
and new_revision_spec is None)
326
351
if len(revision_specs) > 0:
327
352
old_revision_spec = revision_specs[0]
329
old_url = old_revision_spec.get_branch()
330
353
if len(revision_specs) > 1:
331
354
new_revision_spec = revision_specs[1]
333
new_url = new_revision_spec.get_branch()
336
make_paths_wt_relative = True
337
consider_relpath = True
338
if path_list is None or len(path_list) == 0:
339
# If no path is given, the current working tree is used
340
default_location = u'.'
341
consider_relpath = False
342
elif old_url is not None and new_url is not None:
343
other_paths = path_list
344
make_paths_wt_relative = False
346
default_location = path_list[0]
347
other_paths = path_list[1:]
349
def lock_tree_or_branch(wt, br):
352
add_cleanup(wt.unlock)
355
add_cleanup(br.unlock)
357
# Get the old location
360
old_url = default_location
361
working_tree, branch, relpath = \
362
controldir.ControlDir.open_containing_tree_or_branch(old_url)
363
lock_tree_or_branch(working_tree, branch)
364
if consider_relpath and relpath != '':
365
if working_tree is not None and apply_view:
366
views.check_path_in_view(working_tree, relpath)
367
specific_files.append(relpath)
368
old_tree = _get_tree_to_diff(old_revision_spec, working_tree, branch)
371
# Get the new location
373
new_url = default_location
374
if new_url != old_url:
375
working_tree, branch, relpath = \
376
controldir.ControlDir.open_containing_tree_or_branch(new_url)
377
lock_tree_or_branch(working_tree, branch)
378
if consider_relpath and relpath != '':
379
if working_tree is not None and apply_view:
380
views.check_path_in_view(working_tree, relpath)
381
specific_files.append(relpath)
382
new_tree = _get_tree_to_diff(new_revision_spec, working_tree, branch,
383
basis_is_default=working_tree is None)
386
# Get the specific files (all files is None, no files is [])
387
if make_paths_wt_relative and working_tree is not None:
388
other_paths = working_tree.safe_relpath_files(
390
apply_view=apply_view)
391
specific_files.extend(other_paths)
392
if len(specific_files) == 0:
393
specific_files = None
394
if (working_tree is not None and working_tree.supports_views()
396
view_files = working_tree.views.lookup_view()
398
specific_files = view_files
399
view_str = views.view_display_str(view_files)
400
note(gettext("*** Ignoring files outside view. View is %s") % view_str)
402
# Get extra trees that ought to be searched for file-ids
404
if working_tree is not None and working_tree not in (old_tree, new_tree):
405
extra_trees = (working_tree,)
406
return (old_tree, new_tree, old_branch, new_branch,
407
specific_files, extra_trees)
410
def _get_tree_to_diff(spec, tree=None, branch=None, basis_is_default=True):
411
if branch is None and tree is not None:
413
if spec is None or spec.spec is None:
416
return tree.basis_tree()
418
return branch.basis_tree()
421
return spec.as_tree(branch)
356
if old_revision_spec is None:
357
old_tree = tree.basis_tree()
359
old_tree = spec_tree(old_revision_spec)
361
if (new_revision_spec is None
362
or new_revision_spec.spec is None):
365
new_tree = spec_tree(new_revision_spec)
367
if new_tree is not tree:
368
extra_trees = (tree,)
372
return show_diff_trees(old_tree, new_tree, sys.stdout, specific_files,
373
external_diff_options,
374
old_label=old_label, new_label=new_label,
375
extra_trees=extra_trees)
424
378
def show_diff_trees(old_tree, new_tree, to_file, specific_files=None,
425
379
external_diff_options=None,
426
380
old_label='a/', new_label='b/',
428
path_encoding='utf8',
431
context=DEFAULT_CONTEXT_AMOUNT):
432
382
"""Show in text form the changes from one tree to another.
434
:param to_file: The output stream.
435
:param specific_files: Include only changes to these files - None for all
437
:param external_diff_options: If set, use an external GNU diff and pass
439
:param extra_trees: If set, more Trees to use for looking up file ids
440
:param path_encoding: If set, the path will be encoded as specified,
441
otherwise is supposed to be utf8
442
:param format_cls: Formatter class (DiffTree subclass)
385
If set, include only changes to these files.
387
external_diff_options
388
If set, use an external GNU diff and pass these options.
391
If set, more Trees to use for looking up file ids
445
context = DEFAULT_CONTEXT_AMOUNT
446
if format_cls is None:
447
format_cls = DiffTree
448
393
old_tree.lock_read()
450
395
if extra_trees is not None:
467
410
old_tree.unlock()
413
def _show_diff_trees(old_tree, new_tree, to_file,
414
specific_files, external_diff_options,
415
old_label='a/', new_label='b/', extra_trees=None):
417
# GNU Patch uses the epoch date to detect files that are being added
418
# or removed in a diff.
419
EPOCH_DATE = '1970-01-01 00:00:00 +0000'
421
# TODO: Generation of pseudo-diffs for added/deleted files could
422
# be usefully made into a much faster special case.
424
if external_diff_options:
425
assert isinstance(external_diff_options, basestring)
426
opts = external_diff_options.split()
427
def diff_file(olab, olines, nlab, nlines, to_file):
428
external_diff(olab, olines, nlab, nlines, to_file, opts)
430
diff_file = internal_diff
432
delta = new_tree.changes_from(old_tree,
433
specific_files=specific_files,
434
extra_trees=extra_trees, require_versioned=True)
437
for path, file_id, kind in delta.removed:
439
print >>to_file, '=== removed %s %r' % (kind, path.encode('utf8'))
440
old_name = '%s%s\t%s' % (old_label, path,
441
_patch_header_date(old_tree, file_id, path))
442
new_name = '%s%s\t%s' % (new_label, path, EPOCH_DATE)
443
old_tree.inventory[file_id].diff(diff_file, old_name, old_tree,
444
new_name, None, None, to_file)
445
for path, file_id, kind in delta.added:
447
print >>to_file, '=== added %s %r' % (kind, path.encode('utf8'))
448
old_name = '%s%s\t%s' % (old_label, path, EPOCH_DATE)
449
new_name = '%s%s\t%s' % (new_label, path,
450
_patch_header_date(new_tree, file_id, path))
451
new_tree.inventory[file_id].diff(diff_file, new_name, new_tree,
452
old_name, None, None, to_file,
454
for (old_path, new_path, file_id, kind,
455
text_modified, meta_modified) in delta.renamed:
457
prop_str = get_prop_change(meta_modified)
458
print >>to_file, '=== renamed %s %r => %r%s' % (
459
kind, old_path.encode('utf8'),
460
new_path.encode('utf8'), prop_str)
461
old_name = '%s%s\t%s' % (old_label, old_path,
462
_patch_header_date(old_tree, file_id,
464
new_name = '%s%s\t%s' % (new_label, new_path,
465
_patch_header_date(new_tree, file_id,
467
_maybe_diff_file_or_symlink(old_name, old_tree, file_id,
469
text_modified, kind, to_file, diff_file)
470
for path, file_id, kind, text_modified, meta_modified in delta.modified:
472
prop_str = get_prop_change(meta_modified)
473
print >>to_file, '=== modified %s %r%s' % (kind, path.encode('utf8'), prop_str)
474
# The file may be in a different location in the old tree (because
475
# the containing dir was renamed, but the file itself was not)
476
old_path = old_tree.id2path(file_id)
477
old_name = '%s%s\t%s' % (old_label, old_path,
478
_patch_header_date(old_tree, file_id, old_path))
479
new_name = '%s%s\t%s' % (new_label, path,
480
_patch_header_date(new_tree, file_id, path))
482
_maybe_diff_file_or_symlink(old_name, old_tree, file_id,
484
True, kind, to_file, diff_file)
470
489
def _patch_header_date(tree, file_id, path):
471
490
"""Returns a timestamp suitable for use in a patch header."""
473
mtime = tree.get_file_mtime(file_id, path)
474
except errors.FileTimestampUnavailable:
491
mtime = tree.get_file_mtime(file_id, path)
492
assert mtime is not None, \
493
"got an mtime of None for file-id %s, path %s in tree %s" % (
476
495
return timestamp.format_patch_date(mtime)
479
def get_executable_change(old_is_x, new_is_x):
480
descr = { True:"+x", False:"-x", None:"??" }
481
if old_is_x != new_is_x:
482
return ["%s to %s" % (descr[old_is_x], descr[new_is_x],)]
498
def _raise_if_nonexistent(paths, old_tree, new_tree):
499
"""Complain if paths are not in either inventory or tree.
501
It's OK with the files exist in either tree's inventory, or
502
if they exist in the tree but are not versioned.
504
This can be used by operations such as bzr status that can accept
505
unknown or ignored files.
507
mutter("check paths: %r", paths)
510
s = old_tree.filter_unversioned_files(paths)
511
s = new_tree.filter_unversioned_files(s)
512
s = [path for path in s if not new_tree.has_filename(path)]
514
raise errors.PathsDoNotExist(sorted(s))
517
def get_prop_change(meta_modified):
519
return " (properties changed)"
487
class DiffPath(object):
488
"""Base type for command object that compare files"""
490
# The type or contents of the file were unsuitable for diffing
491
CANNOT_DIFF = 'CANNOT_DIFF'
492
# The file has changed in a semantic way
494
# The file content may have changed, but there is no semantic change
495
UNCHANGED = 'UNCHANGED'
497
def __init__(self, old_tree, new_tree, to_file, path_encoding='utf-8'):
500
:param old_tree: The tree to show as the old tree in the comparison
501
:param new_tree: The tree to show as new in the comparison
502
:param to_file: The file to write comparison data to
503
:param path_encoding: The character encoding to write paths in
505
self.old_tree = old_tree
506
self.new_tree = new_tree
507
self.to_file = to_file
508
self.path_encoding = path_encoding
514
def from_diff_tree(klass, diff_tree):
515
return klass(diff_tree.old_tree, diff_tree.new_tree,
516
diff_tree.to_file, diff_tree.path_encoding)
519
def _diff_many(differs, file_id, old_path, new_path, old_kind, new_kind):
520
for file_differ in differs:
521
result = file_differ.diff(file_id, old_path, new_path, old_kind,
523
if result is not DiffPath.CANNOT_DIFF:
526
return DiffPath.CANNOT_DIFF
529
class DiffKindChange(object):
530
"""Special differ for file kind changes.
532
Represents kind change as deletion + creation. Uses the other differs
535
def __init__(self, differs):
536
self.differs = differs
542
def from_diff_tree(klass, diff_tree):
543
return klass(diff_tree.differs)
545
def diff(self, file_id, old_path, new_path, old_kind, new_kind):
546
"""Perform comparison
548
:param file_id: The file_id of the file to compare
549
:param old_path: Path of the file in the old tree
550
:param new_path: Path of the file in the new tree
551
:param old_kind: Old file-kind of the file
552
:param new_kind: New file-kind of the file
554
if None in (old_kind, new_kind):
555
return DiffPath.CANNOT_DIFF
556
result = DiffPath._diff_many(self.differs, file_id, old_path,
557
new_path, old_kind, None)
558
if result is DiffPath.CANNOT_DIFF:
560
return DiffPath._diff_many(self.differs, file_id, old_path, new_path,
564
class DiffDirectory(DiffPath):
566
def diff(self, file_id, old_path, new_path, old_kind, new_kind):
567
"""Perform comparison between two directories. (dummy)
570
if 'directory' not in (old_kind, new_kind):
571
return self.CANNOT_DIFF
572
if old_kind not in ('directory', None):
573
return self.CANNOT_DIFF
574
if new_kind not in ('directory', None):
575
return self.CANNOT_DIFF
579
class DiffSymlink(DiffPath):
581
def diff(self, file_id, old_path, new_path, old_kind, new_kind):
582
"""Perform comparison between two symlinks
584
:param file_id: The file_id of the file to compare
585
:param old_path: Path of the file in the old tree
586
:param new_path: Path of the file in the new tree
587
:param old_kind: Old file-kind of the file
588
:param new_kind: New file-kind of the file
590
if 'symlink' not in (old_kind, new_kind):
591
return self.CANNOT_DIFF
592
if old_kind == 'symlink':
593
old_target = self.old_tree.get_symlink_target(file_id)
594
elif old_kind is None:
597
return self.CANNOT_DIFF
598
if new_kind == 'symlink':
599
new_target = self.new_tree.get_symlink_target(file_id)
600
elif new_kind is None:
603
return self.CANNOT_DIFF
604
return self.diff_symlink(old_target, new_target)
606
def diff_symlink(self, old_target, new_target):
607
if old_target is None:
608
self.to_file.write('=== target is %r\n' % new_target)
609
elif new_target is None:
610
self.to_file.write('=== target was %r\n' % old_target)
612
self.to_file.write('=== target changed %r => %r\n' %
613
(old_target, new_target))
617
class DiffText(DiffPath):
619
# GNU Patch uses the epoch date to detect files that are being added
620
# or removed in a diff.
621
EPOCH_DATE = '1970-01-01 00:00:00 +0000'
623
def __init__(self, old_tree, new_tree, to_file, path_encoding='utf-8',
624
old_label='', new_label='', text_differ=internal_diff,
625
context_lines=DEFAULT_CONTEXT_AMOUNT):
626
DiffPath.__init__(self, old_tree, new_tree, to_file, path_encoding)
627
self.text_differ = text_differ
628
self.old_label = old_label
629
self.new_label = new_label
630
self.path_encoding = path_encoding
631
self.context_lines = context_lines
633
def diff(self, file_id, old_path, new_path, old_kind, new_kind):
634
"""Compare two files in unified diff format
636
:param file_id: The file_id of the file to compare
637
:param old_path: Path of the file in the old tree
638
:param new_path: Path of the file in the new tree
639
:param old_kind: Old file-kind of the file
640
:param new_kind: New file-kind of the file
642
if 'file' not in (old_kind, new_kind):
643
return self.CANNOT_DIFF
644
from_file_id = to_file_id = file_id
645
if old_kind == 'file':
646
old_date = _patch_header_date(self.old_tree, file_id, old_path)
647
elif old_kind is None:
648
old_date = self.EPOCH_DATE
651
return self.CANNOT_DIFF
652
if new_kind == 'file':
653
new_date = _patch_header_date(self.new_tree, file_id, new_path)
654
elif new_kind is None:
655
new_date = self.EPOCH_DATE
658
return self.CANNOT_DIFF
659
from_label = '%s%s\t%s' % (self.old_label, old_path, old_date)
660
to_label = '%s%s\t%s' % (self.new_label, new_path, new_date)
661
return self.diff_text(from_file_id, to_file_id, from_label, to_label,
664
def diff_text(self, from_file_id, to_file_id, from_label, to_label,
665
from_path=None, to_path=None):
666
"""Diff the content of given files in two trees
668
:param from_file_id: The id of the file in the from tree. If None,
669
the file is not present in the from tree.
670
:param to_file_id: The id of the file in the to tree. This may refer
671
to a different file from from_file_id. If None,
672
the file is not present in the to tree.
673
:param from_path: The path in the from tree or None if unknown.
674
:param to_path: The path in the to tree or None if unknown.
676
def _get_text(tree, file_id, path):
677
if file_id is not None:
678
return tree.get_file_lines(file_id, path)
682
from_text = _get_text(self.old_tree, from_file_id, from_path)
683
to_text = _get_text(self.new_tree, to_file_id, to_path)
684
self.text_differ(from_label, from_text, to_label, to_text,
685
self.to_file, path_encoding=self.path_encoding,
686
context_lines=self.context_lines)
687
except errors.BinaryFile:
689
("Binary files %s and %s differ\n" %
690
(from_label, to_label)).encode(self.path_encoding,'replace'))
694
class DiffFromTool(DiffPath):
696
def __init__(self, command_template, old_tree, new_tree, to_file,
697
path_encoding='utf-8'):
698
DiffPath.__init__(self, old_tree, new_tree, to_file, path_encoding)
699
self.command_template = command_template
700
self._root = osutils.mkdtemp(prefix='bzr-diff-')
703
def from_string(klass, command_string, old_tree, new_tree, to_file,
704
path_encoding='utf-8'):
705
command_template = cmdline.split(command_string)
706
if '@' not in command_string:
707
command_template.extend(['@old_path', '@new_path'])
708
return klass(command_template, old_tree, new_tree, to_file,
712
def make_from_diff_tree(klass, command_string, external_diff_options=None):
713
def from_diff_tree(diff_tree):
714
full_command_string = [command_string]
715
if external_diff_options is not None:
716
full_command_string += ' ' + external_diff_options
717
return klass.from_string(full_command_string, diff_tree.old_tree,
718
diff_tree.new_tree, diff_tree.to_file)
719
return from_diff_tree
721
def _get_command(self, old_path, new_path):
722
my_map = {'old_path': old_path, 'new_path': new_path}
723
command = [AtTemplate(t).substitute(my_map) for t in
724
self.command_template]
725
if sys.platform == 'win32': # Popen doesn't accept unicode on win32
728
if isinstance(c, unicode):
729
command_encoded.append(c.encode('mbcs'))
731
command_encoded.append(c)
732
return command_encoded
736
def _execute(self, old_path, new_path):
737
command = self._get_command(old_path, new_path)
739
proc = subprocess.Popen(command, stdout=subprocess.PIPE,
742
if e.errno == errno.ENOENT:
743
raise errors.ExecutableMissing(command[0])
746
self.to_file.write(proc.stdout.read())
749
def _try_symlink_root(self, tree, prefix):
750
if (getattr(tree, 'abspath', None) is None
751
or not osutils.host_os_dereferences_symlinks()):
754
os.symlink(tree.abspath(''), osutils.pathjoin(self._root, prefix))
756
if e.errno != errno.EEXIST:
762
"""Returns safe encoding for passing file path to diff tool"""
763
if sys.platform == 'win32':
766
# Don't fallback to 'utf-8' because subprocess may not be able to
767
# handle utf-8 correctly when locale is not utf-8.
768
return sys.getfilesystemencoding() or 'ascii'
770
def _is_safepath(self, path):
771
"""Return true if `path` may be able to pass to subprocess."""
774
return path == path.encode(fenc).decode(fenc)
778
def _safe_filename(self, prefix, relpath):
779
"""Replace unsafe character in `relpath` then join `self._root`,
780
`prefix` and `relpath`."""
782
# encoded_str.replace('?', '_') may break multibyte char.
783
# So we should encode, decode, then replace(u'?', u'_')
784
relpath_tmp = relpath.encode(fenc, 'replace').decode(fenc, 'replace')
785
relpath_tmp = relpath_tmp.replace(u'?', u'_')
786
return osutils.pathjoin(self._root, prefix, relpath_tmp)
788
def _write_file(self, file_id, tree, prefix, relpath, force_temp=False,
790
if not force_temp and isinstance(tree, WorkingTree):
791
full_path = tree.abspath(tree.id2path(file_id))
792
if self._is_safepath(full_path):
795
full_path = self._safe_filename(prefix, relpath)
796
if not force_temp and self._try_symlink_root(tree, prefix):
798
parent_dir = osutils.dirname(full_path)
800
os.makedirs(parent_dir)
802
if e.errno != errno.EEXIST:
804
source = tree.get_file(file_id, relpath)
806
target = open(full_path, 'wb')
808
osutils.pumpfile(source, target)
814
mtime = tree.get_file_mtime(file_id)
815
except errors.FileTimestampUnavailable:
818
os.utime(full_path, (mtime, mtime))
820
osutils.make_readonly(full_path)
823
def _prepare_files(self, file_id, old_path, new_path, force_temp=False,
824
allow_write_new=False):
825
old_disk_path = self._write_file(file_id, self.old_tree, 'old',
826
old_path, force_temp)
827
new_disk_path = self._write_file(file_id, self.new_tree, 'new',
828
new_path, force_temp,
829
allow_write=allow_write_new)
830
return old_disk_path, new_disk_path
834
osutils.rmtree(self._root)
836
if e.errno != errno.ENOENT:
837
mutter("The temporary directory \"%s\" was not "
838
"cleanly removed: %s." % (self._root, e))
840
def diff(self, file_id, old_path, new_path, old_kind, new_kind):
841
if (old_kind, new_kind) != ('file', 'file'):
842
return DiffPath.CANNOT_DIFF
843
(old_disk_path, new_disk_path) = self._prepare_files(
844
file_id, old_path, new_path)
845
self._execute(old_disk_path, new_disk_path)
847
def edit_file(self, file_id):
848
"""Use this tool to edit a file.
850
A temporary copy will be edited, and the new contents will be
853
:param file_id: The id of the file to edit.
854
:return: The new contents of the file.
856
old_path = self.old_tree.id2path(file_id)
857
new_path = self.new_tree.id2path(file_id)
858
old_abs_path, new_abs_path = self._prepare_files(
859
file_id, old_path, new_path,
860
allow_write_new=True,
862
command = self._get_command(old_abs_path, new_abs_path)
863
subprocess.call(command, cwd=self._root)
864
new_file = open(new_abs_path, 'rb')
866
return new_file.read()
871
class DiffTree(object):
872
"""Provides textual representations of the difference between two trees.
874
A DiffTree examines two trees and where a file-id has altered
875
between them, generates a textual representation of the difference.
876
DiffTree uses a sequence of DiffPath objects which are each
877
given the opportunity to handle a given altered fileid. The list
878
of DiffPath objects can be extended globally by appending to
879
DiffTree.diff_factories, or for a specific diff operation by
880
supplying the extra_factories option to the appropriate method.
883
# list of factories that can provide instances of DiffPath objects
884
# may be extended by plugins.
885
diff_factories = [DiffSymlink.from_diff_tree,
886
DiffDirectory.from_diff_tree]
888
def __init__(self, old_tree, new_tree, to_file, path_encoding='utf-8',
889
diff_text=None, extra_factories=None):
892
:param old_tree: Tree to show as old in the comparison
893
:param new_tree: Tree to show as new in the comparison
894
:param to_file: File to write comparision to
895
:param path_encoding: Character encoding to write paths in
896
:param diff_text: DiffPath-type object to use as a last resort for
898
:param extra_factories: Factories of DiffPaths to try before any other
900
if diff_text is None:
901
diff_text = DiffText(old_tree, new_tree, to_file, path_encoding,
902
'', '', internal_diff)
903
self.old_tree = old_tree
904
self.new_tree = new_tree
905
self.to_file = to_file
906
self.path_encoding = path_encoding
908
if extra_factories is not None:
909
self.differs.extend(f(self) for f in extra_factories)
910
self.differs.extend(f(self) for f in self.diff_factories)
911
self.differs.extend([diff_text, DiffKindChange.from_diff_tree(self)])
914
def from_trees_options(klass, old_tree, new_tree, to_file,
915
path_encoding, external_diff_options, old_label,
916
new_label, using, context_lines):
917
"""Factory for producing a DiffTree.
919
Designed to accept options used by show_diff_trees.
921
:param old_tree: The tree to show as old in the comparison
922
:param new_tree: The tree to show as new in the comparison
923
:param to_file: File to write comparisons to
924
:param path_encoding: Character encoding to use for writing paths
925
:param external_diff_options: If supplied, use the installed diff
926
binary to perform file comparison, using supplied options.
927
:param old_label: Prefix to use for old file labels
928
:param new_label: Prefix to use for new file labels
929
:param using: Commandline to use to invoke an external diff tool
931
if using is not None:
932
extra_factories = [DiffFromTool.make_from_diff_tree(using, external_diff_options)]
935
if external_diff_options:
936
opts = external_diff_options.split()
937
def diff_file(olab, olines, nlab, nlines, to_file, path_encoding=None, context_lines=None):
938
""":param path_encoding: not used but required
939
to match the signature of internal_diff.
941
external_diff(olab, olines, nlab, nlines, to_file, opts)
943
diff_file = internal_diff
944
diff_text = DiffText(old_tree, new_tree, to_file, path_encoding,
945
old_label, new_label, diff_file, context_lines=context_lines)
946
return klass(old_tree, new_tree, to_file, path_encoding, diff_text,
949
def show_diff(self, specific_files, extra_trees=None):
950
"""Write tree diff to self.to_file
952
:param specific_files: the specific files to compare (recursive)
953
:param extra_trees: extra trees to use for mapping paths to file_ids
956
return self._show_diff(specific_files, extra_trees)
958
for differ in self.differs:
961
def _show_diff(self, specific_files, extra_trees):
962
# TODO: Generation of pseudo-diffs for added/deleted files could
963
# be usefully made into a much faster special case.
964
iterator = self.new_tree.iter_changes(self.old_tree,
965
specific_files=specific_files,
966
extra_trees=extra_trees,
967
require_versioned=True)
969
def changes_key(change):
970
old_path, new_path = change[1]
975
def get_encoded_path(path):
977
return path.encode(self.path_encoding, "replace")
978
for (file_id, paths, changed_content, versioned, parent, name, kind,
979
executable) in sorted(iterator, key=changes_key):
980
# The root does not get diffed, and items with no known kind (that
981
# is, missing) in both trees are skipped as well.
982
if parent == (None, None) or kind == (None, None):
984
oldpath, newpath = paths
985
oldpath_encoded = get_encoded_path(paths[0])
986
newpath_encoded = get_encoded_path(paths[1])
987
old_present = (kind[0] is not None and versioned[0])
988
new_present = (kind[1] is not None and versioned[1])
989
renamed = (parent[0], name[0]) != (parent[1], name[1])
991
properties_changed = []
992
properties_changed.extend(get_executable_change(executable[0], executable[1]))
994
if properties_changed:
995
prop_str = " (properties changed: %s)" % (", ".join(properties_changed),)
999
if (old_present, new_present) == (True, False):
1000
self.to_file.write("=== removed %s '%s'\n" %
1001
(kind[0], oldpath_encoded))
1003
elif (old_present, new_present) == (False, True):
1004
self.to_file.write("=== added %s '%s'\n" %
1005
(kind[1], newpath_encoded))
1008
self.to_file.write("=== renamed %s '%s' => '%s'%s\n" %
1009
(kind[0], oldpath_encoded, newpath_encoded, prop_str))
1011
# if it was produced by iter_changes, it must be
1012
# modified *somehow*, either content or execute bit.
1013
self.to_file.write("=== modified %s '%s'%s\n" % (kind[0],
1014
newpath_encoded, prop_str))
1016
self._diff(file_id, oldpath, newpath, kind[0], kind[1])
1022
def diff(self, file_id, old_path, new_path):
1023
"""Perform a diff of a single file
1025
:param file_id: file-id of the file
1026
:param old_path: The path of the file in the old tree
1027
:param new_path: The path of the file in the new tree
1030
old_kind = self.old_tree.kind(file_id)
1031
except (errors.NoSuchId, errors.NoSuchFile):
1034
new_kind = self.new_tree.kind(file_id)
1035
except (errors.NoSuchId, errors.NoSuchFile):
1037
self._diff(file_id, old_path, new_path, old_kind, new_kind)
1040
def _diff(self, file_id, old_path, new_path, old_kind, new_kind):
1041
result = DiffPath._diff_many(self.differs, file_id, old_path,
1042
new_path, old_kind, new_kind)
1043
if result is DiffPath.CANNOT_DIFF:
1044
error_path = new_path
1045
if error_path is None:
1046
error_path = old_path
1047
raise errors.NoDiffFound(error_path)
1050
format_registry = Registry()
1051
format_registry.register('default', DiffTree)
524
def _maybe_diff_file_or_symlink(old_path, old_tree, file_id,
525
new_path, new_tree, text_modified,
526
kind, to_file, diff_file):
528
new_entry = new_tree.inventory[file_id]
529
old_tree.inventory[file_id].diff(diff_file,
added
removed
bzrlib/diff.py
