65
37
# both sequences are empty.
66
38
if not oldlines and not newlines:
69
if allow_binary is False:
70
textfile.check_text_lines(oldlines)
71
textfile.check_text_lines(newlines)
73
if sequence_matcher is None:
74
sequence_matcher = patiencediff.PatienceSequenceMatcher
75
ud = patiencediff.unified_diff(oldlines, newlines,
76
fromfile=old_filename.encode(path_encoding),
77
tofile=new_filename.encode(path_encoding),
78
sequencematcher=sequence_matcher)
43
if oldlines and (oldlines[-1][-1] != '\n'):
46
if newlines and (newlines[-1][-1] != '\n'):
50
ud = difflib.unified_diff(oldlines, newlines,
51
fromfile=old_label, tofile=new_label)
81
53
# work-around for difflib being too smart for its own good
82
54
# if /dev/null is "1,0", patch won't recognize it as /dev/null
84
57
ud[2] = ud[2].replace('-1,0', '-0,0')
86
60
ud[2] = ud[2].replace('+1,0', '+0,0')
87
# work around for difflib emitting random spaces after the label
88
ud[0] = ud[0][:-2] + '\n'
89
ud[1] = ud[1][:-2] + '\n'
93
if not line.endswith('\n'):
94
to_file.write("\n\\ No newline at end of file\n")
62
to_file.writelines(ud)
64
print >>to_file, "\\ No newline at end of file"
99
"""Set the env vars LANG=C and LC_ALL=C."""
100
osutils.set_or_unset_env('LANG', 'C')
101
osutils.set_or_unset_env('LC_ALL', 'C')
102
osutils.set_or_unset_env('LC_CTYPE', None)
103
osutils.set_or_unset_env('LANGUAGE', None)
106
def _spawn_external_diff(diffcmd, capture_errors=True):
107
"""Spawn the externall diff process, and return the child handle.
109
:param diffcmd: The command list to spawn
110
:param capture_errors: Capture stderr as well as setting LANG=C
111
and LC_ALL=C. This lets us read and understand the output of diff,
112
and respond to any errors.
113
:return: A Popen object.
116
if sys.platform == 'win32':
117
# Win32 doesn't support preexec_fn, but that is
118
# okay, because it doesn't support LANG and LC_ALL either.
121
preexec_fn = _set_lang_C
122
stderr = subprocess.PIPE
128
pipe = subprocess.Popen(diffcmd,
129
stdin=subprocess.PIPE,
130
stdout=subprocess.PIPE,
132
preexec_fn=preexec_fn)
134
if e.errno == errno.ENOENT:
135
raise errors.NoDiff(str(e))
141
def external_diff(old_filename, oldlines, new_filename, newlines, to_file,
70
def external_diff(old_label, oldlines, new_label, newlines, to_file,
143
72
"""Display a diff by calling out to the external diff program."""
75
if to_file != sys.stdout:
76
raise NotImplementedError("sorry, can't send external diff other than to stdout yet",
144
79
# make sure our own output is properly ordered before the diff
147
oldtmp_fd, old_abspath = tempfile.mkstemp(prefix='bzr-diff-old-')
148
newtmp_fd, new_abspath = tempfile.mkstemp(prefix='bzr-diff-new-')
149
oldtmpf = os.fdopen(oldtmp_fd, 'wb')
150
newtmpf = os.fdopen(newtmp_fd, 'wb')
82
from tempfile import NamedTemporaryFile
85
oldtmpf = NamedTemporaryFile()
86
newtmpf = NamedTemporaryFile()
153
89
# TODO: perhaps a special case for comparing to or from the empty
198
132
diffcmd.extend(diff_opts)
200
pipe = _spawn_external_diff(diffcmd, capture_errors=True)
201
out,err = pipe.communicate()
134
rc = os.spawnvp(os.P_WAIT, 'diff', diffcmd)
204
# internal_diff() adds a trailing newline, add one here for consistency
207
# 'diff' gives retcode == 2 for all sorts of errors
208
# one of those is 'Binary files differ'.
209
# Bad options could also be the problem.
210
# 'Binary files' is not a real error, so we suppress that error.
213
# Since we got here, we want to make sure to give an i18n error
214
pipe = _spawn_external_diff(diffcmd, capture_errors=False)
215
out, err = pipe.communicate()
217
# Write out the new i18n diff response
218
to_file.write(out+'\n')
219
if pipe.returncode != 2:
220
raise errors.BzrError(
221
'external diff failed with exit code 2'
222
' when run with LANG=C and LC_ALL=C,'
223
' but not when run natively: %r' % (diffcmd,))
225
first_line = lang_c_out.split('\n', 1)[0]
226
# Starting with diffutils 2.8.4 the word "binary" was dropped.
227
m = re.match('^(binary )?files.*differ$', first_line, re.I)
229
raise errors.BzrError('external diff failed with exit code 2;'
230
' command: %r' % (diffcmd,))
232
# Binary files differ, just return
235
# If we got to here, we haven't written out the output of diff
136
if rc != 0 and rc != 1:
239
137
# returns 1 if files differ; that's OK
241
139
msg = 'signal %d' % (-rc)
243
141
msg = 'exit code %d' % rc
245
raise errors.BzrError('external diff failed with %s; command: %r'
143
raise BzrError('external diff failed with %s; command: %r' % (rc, diffcmd))
250
145
oldtmpf.close() # and delete
252
# Clean up. Warn in case the files couldn't be deleted
253
# (in case windows still holds the file open, but not
254
# if the files have already been deleted)
256
os.remove(old_abspath)
258
if e.errno not in (errno.ENOENT,):
259
warning('Failed to delete temporary file: %s %s',
262
os.remove(new_abspath)
264
if e.errno not in (errno.ENOENT,):
265
warning('Failed to delete temporary file: %s %s',
269
@deprecated_function(zero_eight)
270
def show_diff(b, from_spec, specific_files, external_diff_options=None,
271
revision2=None, output=None, b2=None):
150
def show_diff(b, revision, specific_files, external_diff_options=None):
272
151
"""Shortcut for showing the diff to the working tree.
274
Please use show_diff_trees instead.
280
None for 'basis tree', or otherwise the old revision to compare against.
282
The more general form is show_diff_trees(), where the caller
283
supplies any two trees.
288
if from_spec is None:
289
old_tree = b.bzrdir.open_workingtree()
291
old_tree = old_tree = old_tree.basis_tree()
293
old_tree = b.repository.revision_tree(from_spec.in_history(b).rev_id)
295
if revision2 is None:
297
new_tree = b.bzrdir.open_workingtree()
299
new_tree = b2.bzrdir.open_workingtree()
301
new_tree = b.repository.revision_tree(revision2.in_history(b).rev_id)
303
return show_diff_trees(old_tree, new_tree, output, specific_files,
304
external_diff_options)
307
def diff_cmd_helper(tree, specific_files, external_diff_options,
308
old_revision_spec=None, new_revision_spec=None,
310
old_label='a/', new_label='b/'):
311
"""Helper for cmd_diff.
316
:param specific_files:
317
The specific files to compare, or None
319
:param external_diff_options:
320
If non-None, run an external diff, and pass it these options
322
:param old_revision_spec:
323
If None, use basis tree as old revision, otherwise use the tree for
324
the specified revision.
326
:param new_revision_spec:
327
If None, use working tree as new revision, otherwise use the tree for
328
the specified revision.
330
:param revision_specs:
331
Zero, one or two RevisionSpecs from the command line, saying what revisions
332
to compare. This can be passed as an alternative to the old_revision_spec
333
and new_revision_spec parameters.
335
The more general form is show_diff_trees(), where the caller
336
supplies any two trees.
339
# TODO: perhaps remove the old parameters old_revision_spec and
340
# new_revision_spec, since this is only really for use from cmd_diff and
341
# it now always passes through a sequence of revision_specs -- mbp
346
revision = spec.in_store(tree.branch)
348
revision = spec.in_store(None)
349
revision_id = revision.rev_id
350
branch = revision.branch
351
return branch.repository.revision_tree(revision_id)
353
if revision_specs is not None:
354
assert (old_revision_spec is None
355
and new_revision_spec is None)
356
if len(revision_specs) > 0:
357
old_revision_spec = revision_specs[0]
358
if len(revision_specs) > 1:
359
new_revision_spec = revision_specs[1]
361
if old_revision_spec is None:
362
old_tree = tree.basis_tree()
364
old_tree = spec_tree(old_revision_spec)
366
if (new_revision_spec is None
367
or new_revision_spec.spec is None):
370
new_tree = spec_tree(new_revision_spec)
372
if new_tree is not tree:
373
extra_trees = (tree,)
377
return show_diff_trees(old_tree, new_tree, sys.stdout, specific_files,
378
external_diff_options,
379
old_label=old_label, new_label=new_label,
380
extra_trees=extra_trees)
157
None for each, or otherwise the old revision to compare against.
159
The more general form is show_diff_trees(), where the caller
160
supplies any two trees.
165
old_tree = b.basis_tree()
167
old_tree = b.revision_tree(b.lookup_revision(revision))
169
new_tree = b.working_tree()
171
show_diff_trees(old_tree, new_tree, sys.stdout, specific_files,
172
external_diff_options)
383
176
def show_diff_trees(old_tree, new_tree, to_file, specific_files=None,
384
external_diff_options=None,
385
old_label='a/', new_label='b/',
177
external_diff_options=None):
387
178
"""Show in text form the changes from one tree to another.
429
205
diff_file = internal_diff
431
delta = new_tree.changes_from(old_tree,
432
specific_files=specific_files,
433
extra_trees=extra_trees, require_versioned=True)
208
delta = compare_trees(old_tree, new_tree, want_unchanged=False,
209
specific_files=specific_files)
436
211
for path, file_id, kind in delta.removed:
438
print >>to_file, '=== removed %s %r' % (kind, path.encode('utf8'))
439
old_name = '%s%s\t%s' % (old_label, path,
440
_patch_header_date(old_tree, file_id, path))
441
new_name = '%s%s\t%s' % (new_label, path, EPOCH_DATE)
442
old_tree.inventory[file_id].diff(diff_file, old_name, old_tree,
443
new_name, None, None, to_file)
212
print '*** removed %s %r' % (kind, path)
214
diff_file(old_label + path,
215
old_tree.get_file(file_id).readlines(),
444
220
for path, file_id, kind in delta.added:
446
print >>to_file, '=== added %s %r' % (kind, path.encode('utf8'))
447
old_name = '%s%s\t%s' % (old_label, path, EPOCH_DATE)
448
new_name = '%s%s\t%s' % (new_label, path,
449
_patch_header_date(new_tree, file_id, path))
450
new_tree.inventory[file_id].diff(diff_file, new_name, new_tree,
451
old_name, None, None, to_file,
453
for (old_path, new_path, file_id, kind,
454
text_modified, meta_modified) in delta.renamed:
456
prop_str = get_prop_change(meta_modified)
457
print >>to_file, '=== renamed %s %r => %r%s' % (
458
kind, old_path.encode('utf8'),
459
new_path.encode('utf8'), prop_str)
460
old_name = '%s%s\t%s' % (old_label, old_path,
461
_patch_header_date(old_tree, file_id,
463
new_name = '%s%s\t%s' % (new_label, new_path,
464
_patch_header_date(new_tree, file_id,
466
_maybe_diff_file_or_symlink(old_name, old_tree, file_id,
468
text_modified, kind, to_file, diff_file)
469
for path, file_id, kind, text_modified, meta_modified in delta.modified:
471
prop_str = get_prop_change(meta_modified)
472
print >>to_file, '=== modified %s %r%s' % (kind, path.encode('utf8'), prop_str)
473
old_name = '%s%s\t%s' % (old_label, path,
474
_patch_header_date(old_tree, file_id, path))
475
new_name = '%s%s\t%s' % (new_label, path,
476
_patch_header_date(new_tree, file_id, path))
221
print '*** added %s %r' % (kind, path)
226
new_tree.get_file(file_id).readlines(),
229
for old_path, new_path, file_id, kind, text_modified in delta.renamed:
230
print '*** renamed %s %r => %r' % (kind, old_path, new_path)
477
231
if text_modified:
478
_maybe_diff_file_or_symlink(old_name, old_tree, file_id,
480
True, kind, to_file, diff_file)
485
def _patch_header_date(tree, file_id, path):
486
"""Returns a timestamp suitable for use in a patch header."""
487
tm = time.gmtime(tree.get_file_mtime(file_id, path))
488
return time.strftime('%Y-%m-%d %H:%M:%S +0000', tm)
491
def _raise_if_nonexistent(paths, old_tree, new_tree):
492
"""Complain if paths are not in either inventory or tree.
494
It's OK with the files exist in either tree's inventory, or
495
if they exist in the tree but are not versioned.
232
diff_file(old_label + old_path,
233
old_tree.get_file(file_id).readlines(),
234
new_label + new_path,
235
new_tree.get_file(file_id).readlines(),
238
for path, file_id, kind in delta.modified:
239
print '*** modified %s %r' % (kind, path)
241
diff_file(old_label + path,
242
old_tree.get_file(file_id).readlines(),
244
new_tree.get_file(file_id).readlines(),
249
class TreeDelta(object):
250
"""Describes changes from one tree to another.
259
(oldpath, newpath, id, kind, text_modified)
265
Each id is listed only once.
267
Files that are both modified and renamed are listed only in
268
renamed, with the text_modified flag true.
270
The lists are normally sorted when the delta is created.
279
def has_changed(self):
280
changes = len(self.added) + len(self.removed) + len(self.renamed)
281
changes += len(self.modified)
282
return (changes != 0)
284
def touches_file_id(self, file_id):
285
"""Return True if file_id is modified by this delta."""
286
for l in self.added, self.removed, self.modified:
290
for v in self.renamed:
296
def show(self, to_file, show_ids=False, show_unchanged=False):
297
def show_list(files):
298
for path, fid, kind in files:
299
if kind == 'directory':
301
elif kind == 'symlink':
305
print >>to_file, ' %-30s %s' % (path, fid)
307
print >>to_file, ' ', path
310
print >>to_file, 'removed:'
311
show_list(self.removed)
314
print >>to_file, 'added:'
315
show_list(self.added)
318
print >>to_file, 'renamed:'
319
for oldpath, newpath, fid, kind, text_modified in self.renamed:
321
print >>to_file, ' %s => %s %s' % (oldpath, newpath, fid)
323
print >>to_file, ' %s => %s' % (oldpath, newpath)
326
print >>to_file, 'modified:'
327
show_list(self.modified)
329
if show_unchanged and self.unchanged:
330
print >>to_file, 'unchanged:'
331
show_list(self.unchanged)
335
def compare_trees(old_tree, new_tree, want_unchanged, specific_files=None):
336
"""Describe changes from one tree to another.
338
Returns a TreeDelta with details of added, modified, renamed, and
341
The root entry is specifically exempt.
343
This only considers versioned files.
346
If true, also list files unchanged from one version to
350
If true, only check for changes to specified names or
354
from osutils import is_inside_any
497
This can be used by operations such as bzr status that can accept
498
unknown or ignored files.
500
mutter("check paths: %r", paths)
503
s = old_tree.filter_unversioned_files(paths)
504
s = new_tree.filter_unversioned_files(s)
505
s = [path for path in s if not new_tree.has_filename(path)]
507
raise errors.PathsDoNotExist(sorted(s))
510
def get_prop_change(meta_modified):
512
return " (properties changed)"
517
def _maybe_diff_file_or_symlink(old_path, old_tree, file_id,
518
new_path, new_tree, text_modified,
519
kind, to_file, diff_file):
521
new_entry = new_tree.inventory[file_id]
522
old_tree.inventory[file_id].diff(diff_file,
356
old_inv = old_tree.inventory
357
new_inv = new_tree.inventory
359
mutter('start compare_trees')
361
# TODO: match for specific files can be rather smarter by finding
362
# the IDs of those files up front and then considering only that.
364
for file_id in old_tree:
365
if file_id in new_tree:
366
kind = old_inv.get_file_kind(file_id)
367
assert kind == new_inv.get_file_kind(file_id)
369
assert kind in ('file', 'directory', 'symlink', 'root_directory'), \
370
'invalid file kind %r' % kind
372
if kind == 'root_directory':
375
old_path = old_inv.id2path(file_id)
376
new_path = new_inv.id2path(file_id)
379
if (not is_inside_any(specific_files, old_path)
380
and not is_inside_any(specific_files, new_path)):
384
old_sha1 = old_tree.get_file_sha1(file_id)
385
new_sha1 = new_tree.get_file_sha1(file_id)
386
text_modified = (old_sha1 != new_sha1)
388
## mutter("no text to check for %r %r" % (file_id, kind))
389
text_modified = False
391
# TODO: Can possibly avoid calculating path strings if the
392
# two files are unchanged and their names and parents are
393
# the same and the parents are unchanged all the way up.
394
# May not be worthwhile.
396
if old_path != new_path:
397
delta.renamed.append((old_path, new_path, file_id, kind,
400
delta.modified.append((new_path, file_id, kind))
402
delta.unchanged.append((new_path, file_id, kind))
404
kind = old_inv.get_file_kind(file_id)
405
old_path = old_inv.id2path(file_id)
407
if not is_inside_any(specific_files, old_path):
409
delta.removed.append((old_path, file_id, kind))
411
mutter('start looking for new files')
412
for file_id in new_inv:
413
if file_id in old_inv:
415
new_path = new_inv.id2path(file_id)
417
if not is_inside_any(specific_files, new_path):
419
kind = new_inv.get_file_kind(file_id)
420
delta.added.append((new_path, file_id, kind))
425
delta.modified.sort()
426
delta.unchanged.sort()