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 var LANG=C"""
100
osutils.set_or_unset_env('LANG', 'C')
101
osutils.set_or_unset_env('LC_ALL', None)
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
This lets us read and understand the output of diff, and respond
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 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, but not when run'
223
' 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,
309
old_label='a/', new_label='b/'):
310
"""Helper for cmd_diff.
316
The specific files to compare, or None
318
external_diff_options
319
If non-None, run an external diff, and pass it these options
322
If None, use basis tree as old revision, otherwise use the tree for
323
the specified revision.
326
If None, use working tree as new revision, otherwise use the tree for
327
the specified revision.
329
The more general form is show_diff_trees(), where the caller
330
supplies any two trees.
334
revision = spec.in_store(tree.branch)
336
revision = spec.in_store(None)
337
revision_id = revision.rev_id
338
branch = revision.branch
339
return branch.repository.revision_tree(revision_id)
340
if old_revision_spec is None:
341
old_tree = tree.basis_tree()
343
old_tree = spec_tree(old_revision_spec)
345
if new_revision_spec is None:
348
new_tree = spec_tree(new_revision_spec)
349
if new_tree is not tree:
350
extra_trees = (tree,)
354
return show_diff_trees(old_tree, new_tree, sys.stdout, specific_files,
355
external_diff_options,
356
old_label=old_label, new_label=new_label,
357
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)
360
176
def show_diff_trees(old_tree, new_tree, to_file, specific_files=None,
361
external_diff_options=None,
362
old_label='a/', new_label='b/',
177
external_diff_options=None):
364
178
"""Show in text form the changes from one tree to another.
406
205
diff_file = internal_diff
408
delta = new_tree.changes_from(old_tree,
409
specific_files=specific_files,
410
extra_trees=extra_trees, require_versioned=True)
208
delta = compare_trees(old_tree, new_tree, want_unchanged=False,
209
specific_files=specific_files)
413
211
for path, file_id, kind in delta.removed:
415
print >>to_file, '=== removed %s %r' % (kind, path.encode('utf8'))
416
old_name = '%s%s\t%s' % (old_label, path,
417
_patch_header_date(old_tree, file_id, path))
418
new_name = '%s%s\t%s' % (new_label, path, EPOCH_DATE)
419
old_tree.inventory[file_id].diff(diff_file, old_name, old_tree,
420
new_name, None, None, to_file)
212
print >>to_file, '*** removed %s %r' % (kind, path)
214
diff_file(old_label + path,
215
old_tree.get_file(file_id).readlines(),
421
220
for path, file_id, kind in delta.added:
423
print >>to_file, '=== added %s %r' % (kind, path.encode('utf8'))
424
old_name = '%s%s\t%s' % (old_label, path, EPOCH_DATE)
425
new_name = '%s%s\t%s' % (new_label, path,
426
_patch_header_date(new_tree, file_id, path))
427
new_tree.inventory[file_id].diff(diff_file, new_name, new_tree,
428
old_name, None, None, to_file,
430
for (old_path, new_path, file_id, kind,
431
text_modified, meta_modified) in delta.renamed:
433
prop_str = get_prop_change(meta_modified)
434
print >>to_file, '=== renamed %s %r => %r%s' % (
435
kind, old_path.encode('utf8'),
436
new_path.encode('utf8'), prop_str)
437
old_name = '%s%s\t%s' % (old_label, old_path,
438
_patch_header_date(old_tree, file_id,
440
new_name = '%s%s\t%s' % (new_label, new_path,
441
_patch_header_date(new_tree, file_id,
443
_maybe_diff_file_or_symlink(old_name, old_tree, file_id,
445
text_modified, kind, to_file, diff_file)
446
for path, file_id, kind, text_modified, meta_modified in delta.modified:
448
prop_str = get_prop_change(meta_modified)
449
print >>to_file, '=== modified %s %r%s' % (kind, path.encode('utf8'), prop_str)
450
old_name = '%s%s\t%s' % (old_label, path,
451
_patch_header_date(old_tree, file_id, path))
452
new_name = '%s%s\t%s' % (new_label, path,
453
_patch_header_date(new_tree, file_id, path))
221
print >>to_file, '*** 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 >>to_file, '*** renamed %s %r => %r' % (kind, old_path, new_path)
454
231
if text_modified:
455
_maybe_diff_file_or_symlink(old_name, old_tree, file_id,
457
True, kind, to_file, diff_file)
462
def _patch_header_date(tree, file_id, path):
463
"""Returns a timestamp suitable for use in a patch header."""
464
tm = time.gmtime(tree.get_file_mtime(file_id, path))
465
return time.strftime('%Y-%m-%d %H:%M:%S +0000', tm)
468
def _raise_if_nonexistent(paths, old_tree, new_tree):
469
"""Complain if paths are not in either inventory or tree.
471
It's OK with the files exist in either tree's inventory, or
472
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 >>to_file, '*** 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 __eq__(self, other):
280
if not isinstance(other, TreeDelta):
282
return self.added == other.added \
283
and self.removed == other.removed \
284
and self.renamed == other.renamed \
285
and self.modified == other.modified \
286
and self.unchanged == other.unchanged
288
def __ne__(self, other):
289
return not (self == other)
292
return "TreeDelta(added=%r, removed=%r, renamed=%r, modified=%r," \
293
" unchanged=%r)" % (self.added, self.removed, self.renamed,
294
self.modified, self.unchanged)
296
def has_changed(self):
297
changes = len(self.added) + len(self.removed) + len(self.renamed)
298
changes += len(self.modified)
299
return (changes != 0)
301
def touches_file_id(self, file_id):
302
"""Return True if file_id is modified by this delta."""
303
for l in self.added, self.removed, self.modified:
307
for v in self.renamed:
313
def show(self, to_file, show_ids=False, show_unchanged=False):
314
def show_list(files):
315
for path, fid, kind in files:
316
if kind == 'directory':
318
elif kind == 'symlink':
322
print >>to_file, ' %-30s %s' % (path, fid)
324
print >>to_file, ' ', path
327
print >>to_file, 'removed:'
328
show_list(self.removed)
331
print >>to_file, 'added:'
332
show_list(self.added)
335
print >>to_file, 'renamed:'
336
for oldpath, newpath, fid, kind, text_modified in self.renamed:
338
print >>to_file, ' %s => %s %s' % (oldpath, newpath, fid)
340
print >>to_file, ' %s => %s' % (oldpath, newpath)
343
print >>to_file, 'modified:'
344
show_list(self.modified)
346
if show_unchanged and self.unchanged:
347
print >>to_file, 'unchanged:'
348
show_list(self.unchanged)
352
def compare_trees(old_tree, new_tree, want_unchanged=False, specific_files=None):
353
"""Describe changes from one tree to another.
355
Returns a TreeDelta with details of added, modified, renamed, and
358
The root entry is specifically exempt.
360
This only considers versioned files.
363
If true, also list files unchanged from one version to
367
If true, only check for changes to specified names or
371
from osutils import is_inside_any
474
This can be used by operations such as bzr status that can accept
475
unknown or ignored files.
477
mutter("check paths: %r", paths)
480
s = old_tree.filter_unversioned_files(paths)
481
s = new_tree.filter_unversioned_files(s)
482
s = [path for path in s if not new_tree.has_filename(path)]
484
raise errors.PathsDoNotExist(sorted(s))
487
def get_prop_change(meta_modified):
489
return " (properties changed)"
494
def _maybe_diff_file_or_symlink(old_path, old_tree, file_id,
495
new_path, new_tree, text_modified,
496
kind, to_file, diff_file):
498
new_entry = new_tree.inventory[file_id]
499
old_tree.inventory[file_id].diff(diff_file,
373
old_inv = old_tree.inventory
374
new_inv = new_tree.inventory
376
mutter('start compare_trees')
378
# TODO: match for specific files can be rather smarter by finding
379
# the IDs of those files up front and then considering only that.
381
for file_id in old_tree:
382
if file_id in new_tree:
383
kind = old_inv.get_file_kind(file_id)
384
assert kind == new_inv.get_file_kind(file_id)
386
assert kind in ('file', 'directory', 'symlink', 'root_directory'), \
387
'invalid file kind %r' % kind
389
if kind == 'root_directory':
392
old_path = old_inv.id2path(file_id)
393
new_path = new_inv.id2path(file_id)
396
if (not is_inside_any(specific_files, old_path)
397
and not is_inside_any(specific_files, new_path)):
401
old_sha1 = old_tree.get_file_sha1(file_id)
402
new_sha1 = new_tree.get_file_sha1(file_id)
403
text_modified = (old_sha1 != new_sha1)
405
## mutter("no text to check for %r %r" % (file_id, kind))
406
text_modified = False
408
# TODO: Can possibly avoid calculating path strings if the
409
# two files are unchanged and their names and parents are
410
# the same and the parents are unchanged all the way up.
411
# May not be worthwhile.
413
if old_path != new_path:
414
delta.renamed.append((old_path, new_path, file_id, kind,
417
delta.modified.append((new_path, file_id, kind))
419
delta.unchanged.append((new_path, file_id, kind))
421
kind = old_inv.get_file_kind(file_id)
422
old_path = old_inv.id2path(file_id)
424
if not is_inside_any(specific_files, old_path):
426
delta.removed.append((old_path, file_id, kind))
428
mutter('start looking for new files')
429
for file_id in new_inv:
430
if file_id in old_inv:
432
new_path = new_inv.id2path(file_id)
434
if not is_inside_any(specific_files, new_path):
436
kind = new_inv.get_file_kind(file_id)
437
delta.added.append((new_path, file_id, kind))
442
delta.modified.sort()
443
delta.unchanged.sort()