94
213
oldtmpf.writelines(oldlines)
95
214
newtmpf.writelines(newlines)
100
219
if not diff_opts:
221
if sys.platform == 'win32':
222
# Popen doesn't do the proper encoding for external commands
223
# Since we are dealing with an ANSI api, use mbcs encoding
224
old_filename = old_filename.encode('mbcs')
225
new_filename = new_filename.encode('mbcs')
102
226
diffcmd = ['diff',
103
'--label', old_filename+'\t',
105
'--label', new_filename+'\t',
108
# diff only allows one style to be specified; they don't override.
109
# note that some of these take optargs, and the optargs can be
110
# directly appended to the options.
111
# this is only an approximate parser; it doesn't properly understand
113
for s in ['-c', '-u', '-C', '-U',
118
'-y', '--side-by-side',
227
'--label', old_filename,
229
'--label', new_filename,
234
diff_opts = default_style_unified(diff_opts)
130
237
diffcmd.extend(diff_opts)
132
rc = os.spawnvp(os.P_WAIT, 'diff', diffcmd)
134
if rc != 0 and rc != 1:
239
pipe = _spawn_external_diff(diffcmd, capture_errors=True)
240
out, err = pipe.communicate()
243
# internal_diff() adds a trailing newline, add one here for consistency
246
# 'diff' gives retcode == 2 for all sorts of errors
247
# one of those is 'Binary files differ'.
248
# Bad options could also be the problem.
249
# 'Binary files' is not a real error, so we suppress that error.
252
# Since we got here, we want to make sure to give an i18n error
253
pipe = _spawn_external_diff(diffcmd, capture_errors=False)
254
out, err = pipe.communicate()
256
# Write out the new i18n diff response
257
to_file.write(out+'\n')
258
if pipe.returncode != 2:
259
raise errors.BzrError(
260
'external diff failed with exit code 2'
261
' when run with LANG=C and LC_ALL=C,'
262
' but not when run natively: %r' % (diffcmd,))
264
first_line = lang_c_out.split('\n', 1)[0]
265
# Starting with diffutils 2.8.4 the word "binary" was dropped.
266
m = re.match('^(binary )?files.*differ$', first_line, re.I)
268
raise errors.BzrError('external diff failed with exit code 2;'
269
' command: %r' % (diffcmd,))
271
# Binary files differ, just return
274
# If we got to here, we haven't written out the output of diff
135
278
# returns 1 if files differ; that's OK
137
280
msg = 'signal %d' % (-rc)
139
282
msg = 'exit code %d' % rc
141
raise BzrError('external diff failed with %s; command: %r' % (rc, diffcmd))
284
raise errors.BzrError('external diff failed with %s; command: %r'
143
289
oldtmpf.close() # and delete
147
@deprecated_function(zero_eight)
148
def show_diff(b, from_spec, specific_files, external_diff_options=None,
149
revision2=None, output=None, b2=None):
150
"""Shortcut for showing the diff to the working tree.
152
Please use show_diff_trees instead.
158
None for 'basis tree', or otherwise the old revision to compare against.
160
The more general form is show_diff_trees(), where the caller
161
supplies any two trees.
293
# Warn in case the file couldn't be deleted (in case windows still
294
# holds the file open, but not if the files have already been
299
if e.errno not in (errno.ENOENT,):
300
warning('Failed to delete temporary file: %s %s', path, e)
306
def get_trees_and_branches_to_diff_locked(
307
path_list, revision_specs, old_url, new_url, add_cleanup, apply_view=True):
308
"""Get the trees and specific files to diff given a list of paths.
310
This method works out the trees to be diff'ed and the files of
311
interest within those trees.
314
the list of arguments passed to the diff command
315
:param revision_specs:
316
Zero, one or two RevisionSpecs from the diff command line,
317
saying what revisions to compare.
319
The url of the old branch or tree. If None, the tree to use is
320
taken from the first path, if any, or the current working tree.
322
The url of the new branch or tree. If None, the tree to use is
323
taken from the first path, if any, or the current working tree.
325
a callable like Command.add_cleanup. get_trees_and_branches_to_diff
326
will register cleanups that must be run to unlock the trees, etc.
328
if True and a view is set, apply the view or check that the paths
331
a tuple of (old_tree, new_tree, old_branch, new_branch,
332
specific_files, extra_trees) where extra_trees is a sequence of
333
additional trees to search in for file-ids. The trees and branches
334
will be read-locked until the cleanups registered via the add_cleanup
337
# Get the old and new revision specs
338
old_revision_spec = None
339
new_revision_spec = None
340
if revision_specs is not None:
341
if len(revision_specs) > 0:
342
old_revision_spec = revision_specs[0]
344
old_url = old_revision_spec.get_branch()
345
if len(revision_specs) > 1:
346
new_revision_spec = revision_specs[1]
348
new_url = new_revision_spec.get_branch()
167
if from_spec is None:
168
old_tree = b.bzrdir.open_workingtree()
170
old_tree = old_tree = old_tree.basis_tree()
351
make_paths_wt_relative = True
352
consider_relpath = True
353
if path_list is None or len(path_list) == 0:
354
# If no path is given, the current working tree is used
355
default_location = u'.'
356
consider_relpath = False
357
elif old_url is not None and new_url is not None:
358
other_paths = path_list
359
make_paths_wt_relative = False
172
old_tree = b.repository.revision_tree(from_spec.in_history(b).rev_id)
174
if revision2 is None:
176
new_tree = b.bzrdir.open_workingtree()
361
default_location = path_list[0]
362
other_paths = path_list[1:]
364
def lock_tree_or_branch(wt, br):
367
add_cleanup(wt.unlock)
370
add_cleanup(br.unlock)
372
# Get the old location
375
old_url = default_location
376
working_tree, branch, relpath = \
377
controldir.ControlDir.open_containing_tree_or_branch(old_url)
378
lock_tree_or_branch(working_tree, branch)
379
if consider_relpath and relpath != '':
380
if working_tree is not None and apply_view:
381
views.check_path_in_view(working_tree, relpath)
382
specific_files.append(relpath)
383
old_tree = _get_tree_to_diff(old_revision_spec, working_tree, branch)
386
# Get the new location
388
new_url = default_location
389
if new_url != old_url:
390
working_tree, branch, relpath = \
391
controldir.ControlDir.open_containing_tree_or_branch(new_url)
392
lock_tree_or_branch(working_tree, branch)
393
if consider_relpath and relpath != '':
394
if working_tree is not None and apply_view:
395
views.check_path_in_view(working_tree, relpath)
396
specific_files.append(relpath)
397
new_tree = _get_tree_to_diff(new_revision_spec, working_tree, branch,
398
basis_is_default=working_tree is None)
401
# Get the specific files (all files is None, no files is [])
402
if make_paths_wt_relative and working_tree is not None:
403
other_paths = working_tree.safe_relpath_files(
405
apply_view=apply_view)
406
specific_files.extend(other_paths)
407
if len(specific_files) == 0:
408
specific_files = None
409
if (working_tree is not None and working_tree.supports_views()
411
view_files = working_tree.views.lookup_view()
413
specific_files = view_files
414
view_str = views.view_display_str(view_files)
415
note(gettext("*** Ignoring files outside view. View is %s") % view_str)
417
# Get extra trees that ought to be searched for file-ids
419
if working_tree is not None and working_tree not in (old_tree, new_tree):
420
extra_trees = (working_tree,)
421
return (old_tree, new_tree, old_branch, new_branch,
422
specific_files, extra_trees)
425
def _get_tree_to_diff(spec, tree=None, branch=None, basis_is_default=True):
426
if branch is None and tree is not None:
428
if spec is None or spec.spec is None:
431
return tree.basis_tree()
433
return branch.basis_tree()
178
new_tree = b2.bzrdir.open_workingtree()
180
new_tree = b.repository.revision_tree(revision2.in_history(b).rev_id)
182
return show_diff_trees(old_tree, new_tree, output, specific_files,
183
external_diff_options)
186
def diff_cmd_helper(tree, specific_files, external_diff_options,
187
old_revision_spec=None, new_revision_spec=None):
188
"""Helper for cmd_diff.
194
The specific files to compare, or None
196
external_diff_options
197
If non-None, run an external diff, and pass it these options
200
If None, use basis tree as old revision, otherwise use the tree for
201
the specified revision.
204
If None, use working tree as new revision, otherwise use the tree for
205
the specified revision.
207
The more general form is show_diff_trees(), where the caller
208
supplies any two trees.
213
revision_id = spec.in_store(tree.branch).rev_id
214
return tree.branch.repository.revision_tree(revision_id)
215
if old_revision_spec is None:
216
old_tree = tree.basis_tree()
218
old_tree = spec_tree(old_revision_spec)
220
if new_revision_spec is None:
223
new_tree = spec_tree(new_revision_spec)
225
return show_diff_trees(old_tree, new_tree, sys.stdout, specific_files,
226
external_diff_options)
436
return spec.as_tree(branch)
229
439
def show_diff_trees(old_tree, new_tree, to_file, specific_files=None,
230
external_diff_options=None):
440
external_diff_options=None,
441
old_label='a/', new_label='b/',
443
path_encoding='utf8',
446
context=DEFAULT_CONTEXT_AMOUNT):
231
447
"""Show in text form the changes from one tree to another.
234
If set, include only changes to these files.
236
external_diff_options
237
If set, use an external GNU diff and pass these options.
449
:param to_file: The output stream.
450
:param specific_files: Include only changes to these files - None for all
452
:param external_diff_options: If set, use an external GNU diff and pass
454
:param extra_trees: If set, more Trees to use for looking up file ids
455
:param path_encoding: If set, the path will be encoded as specified,
456
otherwise is supposed to be utf8
457
:param format_cls: Formatter class (DiffTree subclass)
460
context = DEFAULT_CONTEXT_AMOUNT
461
if format_cls is None:
462
format_cls = DiffTree
463
with old_tree.lock_read():
464
if extra_trees is not None:
465
for tree in extra_trees:
241
467
new_tree.lock_read()
243
return _show_diff_trees(old_tree, new_tree, to_file,
244
specific_files, external_diff_options)
469
differ = format_cls.from_trees_options(old_tree, new_tree, to_file,
471
external_diff_options,
472
old_label, new_label, using,
473
context_lines=context)
474
return differ.show_diff(specific_files, extra_trees)
246
476
new_tree.unlock()
251
def _show_diff_trees(old_tree, new_tree, to_file,
252
specific_files, external_diff_options):
254
# TODO: Options to control putting on a prefix or suffix, perhaps
255
# as a format string?
259
DEVNULL = '/dev/null'
260
# Windows users, don't panic about this filename -- it is a
261
# special signal to GNU patch that the file should be created or
262
# deleted respectively.
264
# TODO: Generation of pseudo-diffs for added/deleted files could
265
# be usefully made into a much faster special case.
267
_raise_if_doubly_unversioned(specific_files, old_tree, new_tree)
269
if external_diff_options:
270
assert isinstance(external_diff_options, basestring)
271
opts = external_diff_options.split()
272
def diff_file(olab, olines, nlab, nlines, to_file):
273
external_diff(olab, olines, nlab, nlines, to_file, opts)
275
diff_file = internal_diff
277
delta = compare_trees(old_tree, new_tree, want_unchanged=False,
278
specific_files=specific_files)
281
for path, file_id, kind in delta.removed:
283
print >>to_file, '=== removed %s %r' % (kind, old_label + path)
284
old_tree.inventory[file_id].diff(diff_file, old_label + path, old_tree,
285
DEVNULL, None, None, to_file)
286
for path, file_id, kind in delta.added:
288
print >>to_file, '=== added %s %r' % (kind, new_label + path)
289
new_tree.inventory[file_id].diff(diff_file, new_label + path, new_tree,
290
DEVNULL, None, None, to_file,
292
for (old_path, new_path, file_id, kind,
293
text_modified, meta_modified) in delta.renamed:
295
prop_str = get_prop_change(meta_modified)
296
print >>to_file, '=== renamed %s %r => %r%s' % (
297
kind, old_label + old_path, new_label + new_path, prop_str)
298
_maybe_diff_file_or_symlink(old_label, old_path, old_tree, file_id,
299
new_label, new_path, new_tree,
300
text_modified, kind, to_file, diff_file)
301
for path, file_id, kind, text_modified, meta_modified in delta.modified:
303
prop_str = get_prop_change(meta_modified)
304
print >>to_file, '=== modified %s %r%s' % (kind, old_label + path,
307
_maybe_diff_file_or_symlink(old_label, path, old_tree, file_id,
308
new_label, path, new_tree,
309
True, kind, to_file, diff_file)
314
def _raise_if_doubly_unversioned(specific_files, old_tree, new_tree):
315
"""Complain if paths are not versioned in either tree."""
316
if not specific_files:
318
old_unversioned = old_tree.filter_unversioned_files(specific_files)
319
new_unversioned = new_tree.filter_unversioned_files(specific_files)
320
unversioned = old_unversioned.intersection(new_unversioned)
322
raise errors.PathsNotVersionedError(sorted(unversioned))
325
def get_prop_change(meta_modified):
327
return " (properties changed)"
332
def _maybe_diff_file_or_symlink(old_label, old_path, old_tree, file_id,
333
new_label, new_path, new_tree, text_modified,
334
kind, to_file, diff_file):
336
new_entry = new_tree.inventory[file_id]
337
old_tree.inventory[file_id].diff(diff_file,
338
old_label + old_path, old_tree,
339
new_label + new_path, new_entry,
477
if extra_trees is not None:
478
for tree in extra_trees:
482
def _patch_header_date(tree, file_id, path):
483
"""Returns a timestamp suitable for use in a patch header."""
485
mtime = tree.get_file_mtime(path, file_id)
486
except FileTimestampUnavailable:
488
return timestamp.format_patch_date(mtime)
491
def get_executable_change(old_is_x, new_is_x):
492
descr = { True:"+x", False:"-x", None:"??" }
493
if old_is_x != new_is_x:
494
return ["%s to %s" % (descr[old_is_x], descr[new_is_x],)]
499
class DiffPath(object):
500
"""Base type for command object that compare files"""
502
# The type or contents of the file were unsuitable for diffing
503
CANNOT_DIFF = 'CANNOT_DIFF'
504
# The file has changed in a semantic way
506
# The file content may have changed, but there is no semantic change
507
UNCHANGED = 'UNCHANGED'
509
def __init__(self, old_tree, new_tree, to_file, path_encoding='utf-8'):
512
:param old_tree: The tree to show as the old tree in the comparison
513
:param new_tree: The tree to show as new in the comparison
514
:param to_file: The file to write comparison data to
515
:param path_encoding: The character encoding to write paths in
517
self.old_tree = old_tree
518
self.new_tree = new_tree
519
self.to_file = to_file
520
self.path_encoding = path_encoding
526
def from_diff_tree(klass, diff_tree):
527
return klass(diff_tree.old_tree, diff_tree.new_tree,
528
diff_tree.to_file, diff_tree.path_encoding)
531
def _diff_many(differs, file_id, old_path, new_path, old_kind, new_kind):
532
for file_differ in differs:
533
result = file_differ.diff(file_id, old_path, new_path, old_kind,
535
if result is not DiffPath.CANNOT_DIFF:
538
return DiffPath.CANNOT_DIFF
541
class DiffKindChange(object):
542
"""Special differ for file kind changes.
544
Represents kind change as deletion + creation. Uses the other differs
547
def __init__(self, differs):
548
self.differs = differs
554
def from_diff_tree(klass, diff_tree):
555
return klass(diff_tree.differs)
557
def diff(self, file_id, old_path, new_path, old_kind, new_kind):
558
"""Perform comparison
560
:param file_id: The file_id of the file to compare
561
:param old_path: Path of the file in the old tree
562
:param new_path: Path of the file in the new tree
563
:param old_kind: Old file-kind of the file
564
:param new_kind: New file-kind of the file
566
if None in (old_kind, new_kind):
567
return DiffPath.CANNOT_DIFF
568
result = DiffPath._diff_many(self.differs, file_id, old_path,
569
new_path, old_kind, None)
570
if result is DiffPath.CANNOT_DIFF:
572
return DiffPath._diff_many(self.differs, file_id, old_path, new_path,
576
class DiffDirectory(DiffPath):
578
def diff(self, file_id, old_path, new_path, old_kind, new_kind):
579
"""Perform comparison between two directories. (dummy)
582
if 'directory' not in (old_kind, new_kind):
583
return self.CANNOT_DIFF
584
if old_kind not in ('directory', None):
585
return self.CANNOT_DIFF
586
if new_kind not in ('directory', None):
587
return self.CANNOT_DIFF
591
class DiffSymlink(DiffPath):
593
def diff(self, file_id, old_path, new_path, old_kind, new_kind):
594
"""Perform comparison between two symlinks
596
:param file_id: The file_id of the file to compare
597
:param old_path: Path of the file in the old tree
598
:param new_path: Path of the file in the new tree
599
:param old_kind: Old file-kind of the file
600
:param new_kind: New file-kind of the file
602
if 'symlink' not in (old_kind, new_kind):
603
return self.CANNOT_DIFF
604
if old_kind == 'symlink':
605
old_target = self.old_tree.get_symlink_target(old_path, file_id)
606
elif old_kind is None:
609
return self.CANNOT_DIFF
610
if new_kind == 'symlink':
611
new_target = self.new_tree.get_symlink_target(new_path, file_id)
612
elif new_kind is None:
615
return self.CANNOT_DIFF
616
return self.diff_symlink(old_target, new_target)
618
def diff_symlink(self, old_target, new_target):
619
if old_target is None:
620
self.to_file.write('=== target is %r\n' % new_target)
621
elif new_target is None:
622
self.to_file.write('=== target was %r\n' % old_target)
624
self.to_file.write('=== target changed %r => %r\n' %
625
(old_target, new_target))
629
class DiffText(DiffPath):
631
# GNU Patch uses the epoch date to detect files that are being added
632
# or removed in a diff.
633
EPOCH_DATE = '1970-01-01 00:00:00 +0000'
635
def __init__(self, old_tree, new_tree, to_file, path_encoding='utf-8',
636
old_label='', new_label='', text_differ=internal_diff,
637
context_lines=DEFAULT_CONTEXT_AMOUNT):
638
DiffPath.__init__(self, old_tree, new_tree, to_file, path_encoding)
639
self.text_differ = text_differ
640
self.old_label = old_label
641
self.new_label = new_label
642
self.path_encoding = path_encoding
643
self.context_lines = context_lines
645
def diff(self, file_id, old_path, new_path, old_kind, new_kind):
646
"""Compare two files in unified diff format
648
:param file_id: The file_id of the file to compare
649
:param old_path: Path of the file in the old tree
650
:param new_path: Path of the file in the new tree
651
:param old_kind: Old file-kind of the file
652
:param new_kind: New file-kind of the file
654
if 'file' not in (old_kind, new_kind):
655
return self.CANNOT_DIFF
656
from_file_id = to_file_id = file_id
657
if old_kind == 'file':
658
old_date = _patch_header_date(self.old_tree, file_id, old_path)
659
elif old_kind is None:
660
old_date = self.EPOCH_DATE
663
return self.CANNOT_DIFF
664
if new_kind == 'file':
665
new_date = _patch_header_date(self.new_tree, file_id, new_path)
666
elif new_kind is None:
667
new_date = self.EPOCH_DATE
670
return self.CANNOT_DIFF
671
from_label = '%s%s\t%s' % (self.old_label, old_path, old_date)
672
to_label = '%s%s\t%s' % (self.new_label, new_path, new_date)
673
return self.diff_text(old_path, new_path, from_label, to_label,
674
from_file_id, to_file_id)
676
def diff_text(self, from_path, to_path, from_label, to_label,
677
from_file_id=None, to_file_id=None):
678
"""Diff the content of given files in two trees
680
:param from_path: The path in the from tree. If None,
681
the file is not present in the from tree.
682
:param to_path: The path in the to tree. This may refer
683
to a different file from from_path. If None,
684
the file is not present in the to tree.
685
:param from_file_id: The id of the file in the from tree or None if
687
:param to_file_id: The id of the file in the to tree or None if
690
def _get_text(tree, file_id, path):
693
return tree.get_file_lines(path, file_id)
695
from_text = _get_text(self.old_tree, from_file_id, from_path)
696
to_text = _get_text(self.new_tree, to_file_id, to_path)
697
self.text_differ(from_label, from_text, to_label, to_text,
698
self.to_file, path_encoding=self.path_encoding,
699
context_lines=self.context_lines)
700
except errors.BinaryFile:
702
("Binary files %s and %s differ\n" %
703
(from_label, to_label)).encode(self.path_encoding, 'replace'))
707
class DiffFromTool(DiffPath):
709
def __init__(self, command_template, old_tree, new_tree, to_file,
710
path_encoding='utf-8'):
711
DiffPath.__init__(self, old_tree, new_tree, to_file, path_encoding)
712
self.command_template = command_template
713
self._root = osutils.mkdtemp(prefix='brz-diff-')
716
def from_string(klass, command_string, old_tree, new_tree, to_file,
717
path_encoding='utf-8'):
718
command_template = cmdline.split(command_string)
719
if '@' not in command_string:
720
command_template.extend(['@old_path', '@new_path'])
721
return klass(command_template, old_tree, new_tree, to_file,
725
def make_from_diff_tree(klass, command_string, external_diff_options=None):
726
def from_diff_tree(diff_tree):
727
full_command_string = [command_string]
728
if external_diff_options is not None:
729
full_command_string += ' ' + external_diff_options
730
return klass.from_string(full_command_string, diff_tree.old_tree,
731
diff_tree.new_tree, diff_tree.to_file)
732
return from_diff_tree
734
def _get_command(self, old_path, new_path):
735
my_map = {'old_path': old_path, 'new_path': new_path}
736
command = [AtTemplate(t).substitute(my_map) for t in
737
self.command_template]
738
if sys.platform == 'win32': # Popen doesn't accept unicode on win32
741
if isinstance(c, unicode):
742
command_encoded.append(c.encode('mbcs'))
744
command_encoded.append(c)
745
return command_encoded
749
def _execute(self, old_path, new_path):
750
command = self._get_command(old_path, new_path)
752
proc = subprocess.Popen(command, stdout=subprocess.PIPE,
755
if e.errno == errno.ENOENT:
756
raise errors.ExecutableMissing(command[0])
759
self.to_file.write(proc.stdout.read())
762
def _try_symlink_root(self, tree, prefix):
763
if (getattr(tree, 'abspath', None) is None
764
or not osutils.host_os_dereferences_symlinks()):
767
os.symlink(tree.abspath(''), osutils.pathjoin(self._root, prefix))
769
if e.errno != errno.EEXIST:
775
"""Returns safe encoding for passing file path to diff tool"""
776
if sys.platform == 'win32':
779
# Don't fallback to 'utf-8' because subprocess may not be able to
780
# handle utf-8 correctly when locale is not utf-8.
781
return sys.getfilesystemencoding() or 'ascii'
783
def _is_safepath(self, path):
784
"""Return true if `path` may be able to pass to subprocess."""
787
return path == path.encode(fenc).decode(fenc)
791
def _safe_filename(self, prefix, relpath):
792
"""Replace unsafe character in `relpath` then join `self._root`,
793
`prefix` and `relpath`."""
795
# encoded_str.replace('?', '_') may break multibyte char.
796
# So we should encode, decode, then replace(u'?', u'_')
797
relpath_tmp = relpath.encode(fenc, 'replace').decode(fenc, 'replace')
798
relpath_tmp = relpath_tmp.replace(u'?', u'_')
799
return osutils.pathjoin(self._root, prefix, relpath_tmp)
801
def _write_file(self, relpath, tree, prefix, force_temp=False,
802
allow_write=False, file_id=None):
803
if not force_temp and isinstance(tree, WorkingTree):
804
full_path = tree.abspath(relpath)
805
if self._is_safepath(full_path):
808
full_path = self._safe_filename(prefix, relpath)
809
if not force_temp and self._try_symlink_root(tree, prefix):
811
parent_dir = osutils.dirname(full_path)
813
os.makedirs(parent_dir)
815
if e.errno != errno.EEXIST:
817
source = tree.get_file(relpath, file_id)
819
target = open(full_path, 'wb')
821
osutils.pumpfile(source, target)
827
mtime = tree.get_file_mtime(relpath, file_id)
828
except FileTimestampUnavailable:
831
os.utime(full_path, (mtime, mtime))
833
osutils.make_readonly(full_path)
836
def _prepare_files(self, old_path, new_path, force_temp=False,
837
allow_write_new=False, file_id=None):
838
old_disk_path = self._write_file(old_path, self.old_tree, 'old',
839
force_temp, file_id=file_id)
840
new_disk_path = self._write_file(new_path, self.new_tree, 'new',
841
force_temp, file_id=file_id,
842
allow_write=allow_write_new)
843
return old_disk_path, new_disk_path
847
osutils.rmtree(self._root)
849
if e.errno != errno.ENOENT:
850
mutter("The temporary directory \"%s\" was not "
851
"cleanly removed: %s." % (self._root, e))
853
def diff(self, file_id, old_path, new_path, old_kind, new_kind):
854
if (old_kind, new_kind) != ('file', 'file'):
855
return DiffPath.CANNOT_DIFF
856
(old_disk_path, new_disk_path) = self._prepare_files(
857
old_path, new_path, file_id=file_id)
858
self._execute(old_disk_path, new_disk_path)
860
def edit_file(self, old_path, new_path, file_id=None):
861
"""Use this tool to edit a file.
863
A temporary copy will be edited, and the new contents will be
866
:param file_id: The id of the file to edit.
867
:return: The new contents of the file.
869
old_abs_path, new_abs_path = self._prepare_files(
870
old_path, new_path, allow_write_new=True, force_temp=True,
872
command = self._get_command(old_abs_path, new_abs_path)
873
subprocess.call(command, cwd=self._root)
874
new_file = open(new_abs_path, 'rb')
876
return new_file.read()
881
class DiffTree(object):
882
"""Provides textual representations of the difference between two trees.
884
A DiffTree examines two trees and where a file-id has altered
885
between them, generates a textual representation of the difference.
886
DiffTree uses a sequence of DiffPath objects which are each
887
given the opportunity to handle a given altered fileid. The list
888
of DiffPath objects can be extended globally by appending to
889
DiffTree.diff_factories, or for a specific diff operation by
890
supplying the extra_factories option to the appropriate method.
893
# list of factories that can provide instances of DiffPath objects
894
# may be extended by plugins.
895
diff_factories = [DiffSymlink.from_diff_tree,
896
DiffDirectory.from_diff_tree]
898
def __init__(self, old_tree, new_tree, to_file, path_encoding='utf-8',
899
diff_text=None, extra_factories=None):
902
:param old_tree: Tree to show as old in the comparison
903
:param new_tree: Tree to show as new in the comparison
904
:param to_file: File to write comparision to
905
:param path_encoding: Character encoding to write paths in
906
:param diff_text: DiffPath-type object to use as a last resort for
908
:param extra_factories: Factories of DiffPaths to try before any other
910
if diff_text is None:
911
diff_text = DiffText(old_tree, new_tree, to_file, path_encoding,
912
'', '', internal_diff)
913
self.old_tree = old_tree
914
self.new_tree = new_tree
915
self.to_file = to_file
916
self.path_encoding = path_encoding
918
if extra_factories is not None:
919
self.differs.extend(f(self) for f in extra_factories)
920
self.differs.extend(f(self) for f in self.diff_factories)
921
self.differs.extend([diff_text, DiffKindChange.from_diff_tree(self)])
924
def from_trees_options(klass, old_tree, new_tree, to_file,
925
path_encoding, external_diff_options, old_label,
926
new_label, using, context_lines):
927
"""Factory for producing a DiffTree.
929
Designed to accept options used by show_diff_trees.
931
:param old_tree: The tree to show as old in the comparison
932
:param new_tree: The tree to show as new in the comparison
933
:param to_file: File to write comparisons to
934
:param path_encoding: Character encoding to use for writing paths
935
:param external_diff_options: If supplied, use the installed diff
936
binary to perform file comparison, using supplied options.
937
:param old_label: Prefix to use for old file labels
938
:param new_label: Prefix to use for new file labels
939
:param using: Commandline to use to invoke an external diff tool
941
if using is not None:
942
extra_factories = [DiffFromTool.make_from_diff_tree(using, external_diff_options)]
945
if external_diff_options:
946
opts = external_diff_options.split()
947
def diff_file(olab, olines, nlab, nlines, to_file, path_encoding=None, context_lines=None):
948
""":param path_encoding: not used but required
949
to match the signature of internal_diff.
951
external_diff(olab, olines, nlab, nlines, to_file, opts)
953
diff_file = internal_diff
954
diff_text = DiffText(old_tree, new_tree, to_file, path_encoding,
955
old_label, new_label, diff_file, context_lines=context_lines)
956
return klass(old_tree, new_tree, to_file, path_encoding, diff_text,
959
def show_diff(self, specific_files, extra_trees=None):
960
"""Write tree diff to self.to_file
962
:param specific_files: the specific files to compare (recursive)
963
:param extra_trees: extra trees to use for mapping paths to file_ids
966
return self._show_diff(specific_files, extra_trees)
968
for differ in self.differs:
971
def _show_diff(self, specific_files, extra_trees):
972
# TODO: Generation of pseudo-diffs for added/deleted files could
973
# be usefully made into a much faster special case.
974
iterator = self.new_tree.iter_changes(self.old_tree,
975
specific_files=specific_files,
976
extra_trees=extra_trees,
977
require_versioned=True)
979
def changes_key(change):
980
old_path, new_path = change[1]
985
def get_encoded_path(path):
987
return path.encode(self.path_encoding, "replace")
988
for (file_id, paths, changed_content, versioned, parent, name, kind,
989
executable) in sorted(iterator, key=changes_key):
990
# The root does not get diffed, and items with no known kind (that
991
# is, missing) in both trees are skipped as well.
992
if parent == (None, None) or kind == (None, None):
994
oldpath, newpath = paths
995
oldpath_encoded = get_encoded_path(paths[0])
996
newpath_encoded = get_encoded_path(paths[1])
997
old_present = (kind[0] is not None and versioned[0])
998
new_present = (kind[1] is not None and versioned[1])
999
renamed = (parent[0], name[0]) != (parent[1], name[1])
1001
properties_changed = []
1002
properties_changed.extend(get_executable_change(executable[0], executable[1]))
1004
if properties_changed:
1005
prop_str = " (properties changed: %s)" % (", ".join(properties_changed),)
1009
if (old_present, new_present) == (True, False):
1010
self.to_file.write("=== removed %s '%s'\n" %
1011
(kind[0], oldpath_encoded))
1013
elif (old_present, new_present) == (False, True):
1014
self.to_file.write("=== added %s '%s'\n" %
1015
(kind[1], newpath_encoded))
1018
self.to_file.write("=== renamed %s '%s' => '%s'%s\n" %
1019
(kind[0], oldpath_encoded, newpath_encoded, prop_str))
1021
# if it was produced by iter_changes, it must be
1022
# modified *somehow*, either content or execute bit.
1023
self.to_file.write("=== modified %s '%s'%s\n" % (kind[0],
1024
newpath_encoded, prop_str))
1026
self._diff(oldpath, newpath, kind[0], kind[1], file_id=file_id)
1032
def diff(self, file_id, old_path, new_path):
1033
"""Perform a diff of a single file
1035
:param file_id: file-id of the file
1036
:param old_path: The path of the file in the old tree
1037
:param new_path: The path of the file in the new tree
1039
if old_path is None:
1042
old_kind = self.old_tree.kind(old_path, file_id)
1043
if new_path is None:
1046
new_kind = self.new_tree.kind(new_path, file_id)
1047
self._diff(old_path, new_path, old_kind, new_kind, file_id=file_id)
1049
def _diff(self, old_path, new_path, old_kind, new_kind, file_id):
1050
result = DiffPath._diff_many(self.differs, file_id, old_path,
1051
new_path, old_kind, new_kind)
1052
if result is DiffPath.CANNOT_DIFF:
1053
error_path = new_path
1054
if error_path is None:
1055
error_path = old_path
1056
raise errors.NoDiffFound(error_path)
1059
format_registry = Registry()
1060
format_registry.register('default', DiffTree)