41
55
# both sequences are empty.
42
56
if not oldlines and not newlines:
47
if oldlines and (oldlines[-1][-1] != '\n'):
50
if newlines and (newlines[-1][-1] != '\n'):
54
ud = difflib.unified_diff(oldlines, newlines,
55
fromfile=old_label, tofile=new_label)
59
if allow_binary is False:
60
check_text_lines(oldlines)
61
check_text_lines(newlines)
63
if sequence_matcher is None:
64
sequence_matcher = bzrlib.patiencediff.PatienceSequenceMatcher
65
ud = unified_diff(oldlines, newlines,
66
fromfile=old_filename.encode(path_encoding),
67
tofile=new_filename.encode(path_encoding),
68
sequencematcher=sequence_matcher)
57
71
# work-around for difflib being too smart for its own good
58
72
# if /dev/null is "1,0", patch won't recognize it as /dev/null
61
74
ud[2] = ud[2].replace('-1,0', '-0,0')
64
76
ud[2] = ud[2].replace('+1,0', '+0,0')
77
# work around for difflib emitting random spaces after the label
78
ud[0] = ud[0][:-2] + '\n'
79
ud[1] = ud[1][:-2] + '\n'
67
82
to_file.write(line)
69
print >>to_file, "\\ No newline at end of file"
83
if not line.endswith('\n'):
84
to_file.write("\n\\ No newline at end of file\n")
75
def external_diff(old_label, oldlines, new_label, newlines, to_file,
88
def external_diff(old_filename, oldlines, new_filename, newlines, to_file,
77
90
"""Display a diff by calling out to the external diff program."""
91
if hasattr(to_file, 'fileno'):
95
out_file = subprocess.PIPE
80
if to_file != sys.stdout:
81
raise NotImplementedError("sorry, can't send external diff other than to stdout yet",
84
98
# make sure our own output is properly ordered before the diff
87
from tempfile import NamedTemporaryFile
90
oldtmpf = NamedTemporaryFile()
91
newtmpf = NamedTemporaryFile()
101
oldtmp_fd, old_abspath = tempfile.mkstemp(prefix='bzr-diff-old-')
102
newtmp_fd, new_abspath = tempfile.mkstemp(prefix='bzr-diff-new-')
103
oldtmpf = os.fdopen(oldtmp_fd, 'wb')
104
newtmpf = os.fdopen(newtmp_fd, 'wb')
94
107
# TODO: perhaps a special case for comparing to or from the empty
150
177
oldtmpf.close() # and delete
155
def show_diff(b, revision, specific_files, external_diff_options=None):
179
# Clean up. Warn in case the files couldn't be deleted
180
# (in case windows still holds the file open, but not
181
# if the files have already been deleted)
183
os.remove(old_abspath)
185
if e.errno not in (errno.ENOENT,):
186
warning('Failed to delete temporary file: %s %s',
189
os.remove(new_abspath)
191
if e.errno not in (errno.ENOENT,):
192
warning('Failed to delete temporary file: %s %s',
196
@deprecated_function(zero_eight)
197
def show_diff(b, from_spec, specific_files, external_diff_options=None,
198
revision2=None, output=None, b2=None):
156
199
"""Shortcut for showing the diff to the working tree.
201
Please use show_diff_trees instead.
162
None for each, or otherwise the old revision to compare against.
164
The more general form is show_diff_trees(), where the caller
165
supplies any two trees.
170
old_tree = b.basis_tree()
172
old_tree = b.revision_tree(b.lookup_revision(revision))
174
new_tree = b.working_tree()
176
show_diff_trees(old_tree, new_tree, sys.stdout, specific_files,
177
external_diff_options)
207
None for 'basis tree', or otherwise the old revision to compare against.
209
The more general form is show_diff_trees(), where the caller
210
supplies any two trees.
215
if from_spec is None:
216
old_tree = b.bzrdir.open_workingtree()
218
old_tree = old_tree = old_tree.basis_tree()
220
old_tree = b.repository.revision_tree(from_spec.in_history(b).rev_id)
222
if revision2 is None:
224
new_tree = b.bzrdir.open_workingtree()
226
new_tree = b2.bzrdir.open_workingtree()
228
new_tree = b.repository.revision_tree(revision2.in_history(b).rev_id)
230
return show_diff_trees(old_tree, new_tree, output, specific_files,
231
external_diff_options)
234
def diff_cmd_helper(tree, specific_files, external_diff_options,
235
old_revision_spec=None, new_revision_spec=None,
236
old_label='a/', new_label='b/'):
237
"""Helper for cmd_diff.
243
The specific files to compare, or None
245
external_diff_options
246
If non-None, run an external diff, and pass it these options
249
If None, use basis tree as old revision, otherwise use the tree for
250
the specified revision.
253
If None, use working tree as new revision, otherwise use the tree for
254
the specified revision.
256
The more general form is show_diff_trees(), where the caller
257
supplies any two trees.
261
revision_id = spec.in_store(tree.branch).rev_id
262
return tree.branch.repository.revision_tree(revision_id)
263
if old_revision_spec is None:
264
old_tree = tree.basis_tree()
266
old_tree = spec_tree(old_revision_spec)
268
if new_revision_spec is None:
271
new_tree = spec_tree(new_revision_spec)
273
return show_diff_trees(old_tree, new_tree, sys.stdout, specific_files,
274
external_diff_options,
275
old_label=old_label, new_label=new_label)
181
278
def show_diff_trees(old_tree, new_tree, to_file, specific_files=None,
182
external_diff_options=None):
279
external_diff_options=None,
280
old_label='a/', new_label='b/'):
183
281
"""Show in text form the changes from one tree to another.
210
321
diff_file = internal_diff
213
323
delta = compare_trees(old_tree, new_tree, want_unchanged=False,
214
324
specific_files=specific_files)
216
327
for path, file_id, kind in delta.removed:
217
print >>to_file, '*** removed %s %r' % (kind, path)
219
diff_file(old_label + path,
220
old_tree.get_file(file_id).readlines(),
329
print >>to_file, '=== removed %s %r' % (kind, path.encode('utf8'))
330
old_name = '%s%s\t%s' % (old_label, path,
331
_patch_header_date(old_tree, file_id, path))
332
new_name = '%s%s\t%s' % (new_label, path, EPOCH_DATE)
333
old_tree.inventory[file_id].diff(diff_file, old_name, old_tree,
334
new_name, None, None, to_file)
225
335
for path, file_id, kind in delta.added:
226
print >>to_file, '*** added %s %r' % (kind, path)
231
new_tree.get_file(file_id).readlines(),
234
for old_path, new_path, file_id, kind, text_modified in delta.renamed:
235
print >>to_file, '*** renamed %s %r => %r' % (kind, old_path, new_path)
337
print >>to_file, '=== added %s %r' % (kind, path.encode('utf8'))
338
old_name = '%s%s\t%s' % (old_label, path, EPOCH_DATE)
339
new_name = '%s%s\t%s' % (new_label, path,
340
_patch_header_date(new_tree, file_id, path))
341
new_tree.inventory[file_id].diff(diff_file, new_name, new_tree,
342
old_name, None, None, to_file,
344
for (old_path, new_path, file_id, kind,
345
text_modified, meta_modified) in delta.renamed:
347
prop_str = get_prop_change(meta_modified)
348
print >>to_file, '=== renamed %s %r => %r%s' % (
349
kind, old_path.encode('utf8'),
350
new_path.encode('utf8'), prop_str)
351
old_name = '%s%s\t%s' % (old_label, old_path,
352
_patch_header_date(old_tree, file_id,
354
new_name = '%s%s\t%s' % (new_label, new_path,
355
_patch_header_date(new_tree, file_id,
357
_maybe_diff_file_or_symlink(old_name, old_tree, file_id,
359
text_modified, kind, to_file, diff_file)
360
for path, file_id, kind, text_modified, meta_modified in delta.modified:
362
prop_str = get_prop_change(meta_modified)
363
print >>to_file, '=== modified %s %r%s' % (kind, path.encode('utf8'), prop_str)
364
old_name = '%s%s\t%s' % (old_label, path,
365
_patch_header_date(old_tree, file_id, path))
366
new_name = '%s%s\t%s' % (new_label, path,
367
_patch_header_date(new_tree, file_id, path))
236
368
if text_modified:
237
diff_file(old_label + old_path,
238
old_tree.get_file(file_id).readlines(),
239
new_label + new_path,
240
new_tree.get_file(file_id).readlines(),
243
for path, file_id, kind in delta.modified:
244
print >>to_file, '*** modified %s %r' % (kind, path)
246
diff_file(old_label + path,
247
old_tree.get_file(file_id).readlines(),
249
new_tree.get_file(file_id).readlines(),
254
class TreeDelta(object):
255
"""Describes changes from one tree to another.
264
(oldpath, newpath, id, kind, text_modified)
270
Each id is listed only once.
272
Files that are both modified and renamed are listed only in
273
renamed, with the text_modified flag true.
275
Files are only considered renamed if their name has changed or
276
their parent directory has changed. Renaming a directory
277
does not count as renaming all its contents.
279
The lists are normally sorted when the delta is created.
288
def __eq__(self, other):
289
if not isinstance(other, TreeDelta):
291
return self.added == other.added \
292
and self.removed == other.removed \
293
and self.renamed == other.renamed \
294
and self.modified == other.modified \
295
and self.unchanged == other.unchanged
297
def __ne__(self, other):
298
return not (self == other)
301
return "TreeDelta(added=%r, removed=%r, renamed=%r, modified=%r," \
302
" unchanged=%r)" % (self.added, self.removed, self.renamed,
303
self.modified, self.unchanged)
305
def has_changed(self):
306
changes = len(self.added) + len(self.removed) + len(self.renamed)
307
changes += len(self.modified)
308
return (changes != 0)
310
def touches_file_id(self, file_id):
311
"""Return True if file_id is modified by this delta."""
312
for l in self.added, self.removed, self.modified:
316
for v in self.renamed:
322
def show(self, to_file, show_ids=False, show_unchanged=False):
323
def show_list(files):
324
for path, fid, kind in files:
325
if kind == 'directory':
327
elif kind == 'symlink':
331
print >>to_file, ' %-30s %s' % (path, fid)
333
print >>to_file, ' ', path
336
print >>to_file, 'removed:'
337
show_list(self.removed)
340
print >>to_file, 'added:'
341
show_list(self.added)
344
print >>to_file, 'renamed:'
345
for oldpath, newpath, fid, kind, text_modified in self.renamed:
347
print >>to_file, ' %s => %s %s' % (oldpath, newpath, fid)
349
print >>to_file, ' %s => %s' % (oldpath, newpath)
352
print >>to_file, 'modified:'
353
show_list(self.modified)
355
if show_unchanged and self.unchanged:
356
print >>to_file, 'unchanged:'
357
show_list(self.unchanged)
361
def compare_trees(old_tree, new_tree, want_unchanged=False, specific_files=None):
362
"""Describe changes from one tree to another.
364
Returns a TreeDelta with details of added, modified, renamed, and
367
The root entry is specifically exempt.
369
This only considers versioned files.
372
If true, also list files unchanged from one version to
376
If true, only check for changes to specified names or
380
from osutils import is_inside_any
382
old_inv = old_tree.inventory
383
new_inv = new_tree.inventory
385
mutter('start compare_trees')
387
# TODO: match for specific files can be rather smarter by finding
388
# the IDs of those files up front and then considering only that.
390
for file_id in old_tree:
391
if file_id in new_tree:
392
old_ie = old_inv[file_id]
393
new_ie = new_inv[file_id]
396
assert kind == new_ie.kind
398
assert kind in ('file', 'directory', 'symlink', 'root_directory'), \
399
'invalid file kind %r' % kind
401
if kind == 'root_directory':
405
if (not is_inside_any(specific_files, old_inv.id2path(file_id))
406
and not is_inside_any(specific_files, new_inv.id2path(file_id))):
410
old_sha1 = old_tree.get_file_sha1(file_id)
411
new_sha1 = new_tree.get_file_sha1(file_id)
412
text_modified = (old_sha1 != new_sha1)
414
## mutter("no text to check for %r %r" % (file_id, kind))
415
text_modified = False
417
# TODO: Can possibly avoid calculating path strings if the
418
# two files are unchanged and their names and parents are
419
# the same and the parents are unchanged all the way up.
420
# May not be worthwhile.
422
if (old_ie.name != new_ie.name
423
or old_ie.parent_id != new_ie.parent_id):
424
delta.renamed.append((old_inv.id2path(file_id),
425
new_inv.id2path(file_id),
429
delta.modified.append((new_inv.id2path(file_id), file_id, kind))
431
delta.unchanged.append((new_inv.id2path(file_id), file_id, kind))
433
kind = old_inv.get_file_kind(file_id)
434
old_path = old_inv.id2path(file_id)
436
if not is_inside_any(specific_files, old_path):
438
delta.removed.append((old_path, file_id, kind))
440
mutter('start looking for new files')
441
for file_id in new_inv:
442
if file_id in old_inv:
444
new_path = new_inv.id2path(file_id)
446
if not is_inside_any(specific_files, new_path):
448
kind = new_inv.get_file_kind(file_id)
449
delta.added.append((new_path, file_id, kind))
454
delta.modified.sort()
455
delta.unchanged.sort()
369
_maybe_diff_file_or_symlink(old_name, old_tree, file_id,
371
True, kind, to_file, diff_file)
376
def _patch_header_date(tree, file_id, path):
377
"""Returns a timestamp suitable for use in a patch header."""
378
tm = time.gmtime(tree.get_file_mtime(file_id, path))
379
return time.strftime('%Y-%m-%d %H:%M:%S +0000', tm)
382
def _raise_if_doubly_unversioned(specific_files, old_tree, new_tree):
383
"""Complain if paths are not versioned in either tree."""
384
if not specific_files:
386
old_unversioned = old_tree.filter_unversioned_files(specific_files)
387
new_unversioned = new_tree.filter_unversioned_files(specific_files)
388
unversioned = old_unversioned.intersection(new_unversioned)
390
raise errors.PathsNotVersionedError(sorted(unversioned))
393
def _raise_if_nonexistent(paths, old_tree, new_tree):
394
"""Complain if paths are not in either inventory or tree.
396
It's OK with the files exist in either tree's inventory, or
397
if they exist in the tree but are not versioned.
399
This can be used by operations such as bzr status that can accept
400
unknown or ignored files.
402
mutter("check paths: %r", paths)
405
s = old_tree.filter_unversioned_files(paths)
406
s = new_tree.filter_unversioned_files(s)
407
s = [path for path in s if not new_tree.has_filename(path)]
409
raise errors.PathsDoNotExist(sorted(s))
412
def get_prop_change(meta_modified):
414
return " (properties changed)"
419
def _maybe_diff_file_or_symlink(old_path, old_tree, file_id,
420
new_path, new_tree, text_modified,
421
kind, to_file, diff_file):
423
new_entry = new_tree.inventory[file_id]
424
old_tree.inventory[file_id].diff(diff_file,