58
40
# both sequences are empty.
59
41
if not oldlines and not newlines:
62
if allow_binary is False:
63
check_text_lines(oldlines)
64
check_text_lines(newlines)
66
if sequence_matcher is None:
67
sequence_matcher = bzrlib.patiencediff.PatienceSequenceMatcher
68
ud = unified_diff(oldlines, newlines,
69
fromfile=old_filename.encode(path_encoding),
70
tofile=new_filename.encode(path_encoding),
71
sequencematcher=sequence_matcher)
46
if oldlines and (oldlines[-1][-1] != '\n'):
49
if newlines and (newlines[-1][-1] != '\n'):
53
ud = difflib.unified_diff(oldlines, newlines, **kw)
74
55
# work-around for difflib being too smart for its own good
75
56
# if /dev/null is "1,0", patch won't recognize it as /dev/null
77
59
ud[2] = ud[2].replace('-1,0', '-0,0')
79
62
ud[2] = ud[2].replace('+1,0', '+0,0')
80
# work around for difflib emitting random spaces after the label
81
ud[0] = ud[0][:-2] + '\n'
82
ud[1] = ud[1][:-2] + '\n'
86
if not line.endswith('\n'):
87
to_file.write("\n\\ No newline at end of file\n")
64
to_file.writelines(ud)
66
print >>to_file, "\\ No newline at end of file"
91
def external_diff(old_filename, oldlines, new_filename, newlines, to_file,
93
"""Display a diff by calling out to the external diff program."""
94
# make sure our own output is properly ordered before the diff
97
oldtmp_fd, old_abspath = tempfile.mkstemp(prefix='bzr-diff-old-')
98
newtmp_fd, new_abspath = tempfile.mkstemp(prefix='bzr-diff-new-')
99
oldtmpf = os.fdopen(oldtmp_fd, 'wb')
100
newtmpf = os.fdopen(newtmp_fd, 'wb')
103
# TODO: perhaps a special case for comparing to or from the empty
104
# sequence; can just use /dev/null on Unix
106
# TODO: if either of the files being compared already exists as a
107
# regular named file (e.g. in the working directory) then we can
108
# compare directly to that, rather than copying it.
110
oldtmpf.writelines(oldlines)
111
newtmpf.writelines(newlines)
119
'--label', old_filename,
121
'--label', new_filename,
126
# diff only allows one style to be specified; they don't override.
127
# note that some of these take optargs, and the optargs can be
128
# directly appended to the options.
129
# this is only an approximate parser; it doesn't properly understand
131
for s in ['-c', '-u', '-C', '-U',
136
'-y', '--side-by-side',
148
diffcmd.extend(diff_opts)
151
pipe = subprocess.Popen(diffcmd,
152
stdin=subprocess.PIPE,
153
stdout=subprocess.PIPE)
155
if e.errno == errno.ENOENT:
156
raise errors.NoDiff(str(e))
160
first_line = pipe.stdout.readline()
161
to_file.write(first_line)
162
bzrlib.osutils.pumpfile(pipe.stdout, to_file)
70
def show_diff(b, revision, specific_files):
74
old_tree = b.basis_tree()
76
old_tree = b.revision_tree(b.lookup_revision(revision))
166
# 'diff' gives retcode == 2 for all sorts of errors
167
# one of those is 'Binary files differ'.
168
# Bad options could also be the problem.
169
# 'Binary files' is not a real error, so we suppress that error
170
m = re.match('^binary files.*differ$', first_line, re.I)
172
raise BzrError('external diff failed with exit code 2;'
173
' command: %r' % (diffcmd,))
174
elif rc not in (0, 1):
175
# returns 1 if files differ; that's OK
177
msg = 'signal %d' % (-rc)
179
msg = 'exit code %d' % rc
181
raise BzrError('external diff failed with %s; command: %r'
184
# internal_diff() adds a trailing newline, add one here for consistency
188
oldtmpf.close() # and delete
190
# Clean up. Warn in case the files couldn't be deleted
191
# (in case windows still holds the file open, but not
192
# if the files have already been deleted)
194
os.remove(old_abspath)
196
if e.errno not in (errno.ENOENT,):
197
warning('Failed to delete temporary file: %s %s',
200
os.remove(new_abspath)
202
if e.errno not in (errno.ENOENT,):
203
warning('Failed to delete temporary file: %s %s',
207
@deprecated_function(zero_eight)
208
def show_diff(b, from_spec, specific_files, external_diff_options=None,
209
revision2=None, output=None, b2=None):
210
"""Shortcut for showing the diff to the working tree.
212
Please use show_diff_trees instead.
218
None for 'basis tree', or otherwise the old revision to compare against.
220
The more general form is show_diff_trees(), where the caller
221
supplies any two trees.
226
if from_spec is None:
227
old_tree = b.bzrdir.open_workingtree()
229
old_tree = old_tree = old_tree.basis_tree()
231
old_tree = b.repository.revision_tree(from_spec.in_history(b).rev_id)
233
if revision2 is None:
235
new_tree = b.bzrdir.open_workingtree()
237
new_tree = b2.bzrdir.open_workingtree()
239
new_tree = b.repository.revision_tree(revision2.in_history(b).rev_id)
241
return show_diff_trees(old_tree, new_tree, output, specific_files,
242
external_diff_options)
245
def diff_cmd_helper(tree, specific_files, external_diff_options,
246
old_revision_spec=None, new_revision_spec=None,
247
old_label='a/', new_label='b/'):
248
"""Helper for cmd_diff.
254
The specific files to compare, or None
256
external_diff_options
257
If non-None, run an external diff, and pass it these options
260
If None, use basis tree as old revision, otherwise use the tree for
261
the specified revision.
264
If None, use working tree as new revision, otherwise use the tree for
265
the specified revision.
267
The more general form is show_diff_trees(), where the caller
268
supplies any two trees.
272
revision = spec.in_store(tree.branch)
274
revision = spec.in_store(None)
275
revision_id = revision.rev_id
276
branch = revision.branch
277
return branch.repository.revision_tree(revision_id)
278
if old_revision_spec is None:
279
old_tree = tree.basis_tree()
281
old_tree = spec_tree(old_revision_spec)
283
if new_revision_spec is None:
286
new_tree = spec_tree(new_revision_spec)
287
if new_tree is not tree:
288
extra_trees = (tree,)
292
return show_diff_trees(old_tree, new_tree, sys.stdout, specific_files,
293
external_diff_options,
294
old_label=old_label, new_label=new_label,
295
extra_trees=extra_trees)
298
def show_diff_trees(old_tree, new_tree, to_file, specific_files=None,
299
external_diff_options=None,
300
old_label='a/', new_label='b/',
302
"""Show in text form the changes from one tree to another.
305
If set, include only changes to these files.
307
external_diff_options
308
If set, use an external GNU diff and pass these options.
311
If set, more Trees to use for looking up file ids
317
return _show_diff_trees(old_tree, new_tree, to_file,
318
specific_files, external_diff_options,
319
old_label=old_label, new_label=new_label,
320
extra_trees=extra_trees)
327
def _show_diff_trees(old_tree, new_tree, to_file,
328
specific_files, external_diff_options,
329
old_label='a/', new_label='b/', extra_trees=None):
331
# GNU Patch uses the epoch date to detect files that are being added
332
# or removed in a diff.
333
EPOCH_DATE = '1970-01-01 00:00:00 +0000'
78
new_tree = b.working_tree()
80
# TODO: Options to control putting on a prefix or suffix, perhaps as a format string
85
# Windows users, don't panic about this filename -- it is a
86
# special signal to GNU patch that the file should be created or
87
# deleted respectively.
335
89
# TODO: Generation of pseudo-diffs for added/deleted files could
336
90
# be usefully made into a much faster special case.
338
if external_diff_options:
339
assert isinstance(external_diff_options, basestring)
340
opts = external_diff_options.split()
341
def diff_file(olab, olines, nlab, nlines, to_file):
342
external_diff(olab, olines, nlab, nlines, to_file, opts)
344
diff_file = internal_diff
346
delta = new_tree.changes_from(old_tree,
347
specific_files=specific_files,
348
extra_trees=extra_trees, require_versioned=True)
92
delta = compare_trees(old_tree, new_tree, want_unchanged=False,
93
specific_files=specific_files)
351
95
for path, file_id, kind in delta.removed:
353
print >>to_file, '=== removed %s %r' % (kind, path.encode('utf8'))
354
old_name = '%s%s\t%s' % (old_label, path,
355
_patch_header_date(old_tree, file_id, path))
356
new_name = '%s%s\t%s' % (new_label, path, EPOCH_DATE)
357
old_tree.inventory[file_id].diff(diff_file, old_name, old_tree,
358
new_name, None, None, to_file)
96
print '*** removed %s %r' % (kind, path)
98
_diff_one(old_tree.get_file(file_id).readlines(),
101
fromfile=old_label + path,
359
104
for path, file_id, kind in delta.added:
361
print >>to_file, '=== added %s %r' % (kind, path.encode('utf8'))
362
old_name = '%s%s\t%s' % (old_label, path, EPOCH_DATE)
363
new_name = '%s%s\t%s' % (new_label, path,
364
_patch_header_date(new_tree, file_id, path))
365
new_tree.inventory[file_id].diff(diff_file, new_name, new_tree,
366
old_name, None, None, to_file,
368
for (old_path, new_path, file_id, kind,
369
text_modified, meta_modified) in delta.renamed:
371
prop_str = get_prop_change(meta_modified)
372
print >>to_file, '=== renamed %s %r => %r%s' % (
373
kind, old_path.encode('utf8'),
374
new_path.encode('utf8'), prop_str)
375
old_name = '%s%s\t%s' % (old_label, old_path,
376
_patch_header_date(old_tree, file_id,
378
new_name = '%s%s\t%s' % (new_label, new_path,
379
_patch_header_date(new_tree, file_id,
381
_maybe_diff_file_or_symlink(old_name, old_tree, file_id,
383
text_modified, kind, to_file, diff_file)
384
for path, file_id, kind, text_modified, meta_modified in delta.modified:
386
prop_str = get_prop_change(meta_modified)
387
print >>to_file, '=== modified %s %r%s' % (kind, path.encode('utf8'), prop_str)
388
old_name = '%s%s\t%s' % (old_label, path,
389
_patch_header_date(old_tree, file_id, path))
390
new_name = '%s%s\t%s' % (new_label, path,
391
_patch_header_date(new_tree, file_id, path))
105
print '*** added %s %r' % (kind, path)
108
new_tree.get_file(file_id).readlines(),
111
tofile=new_label + path)
113
for old_path, new_path, file_id, kind, text_modified in delta.renamed:
114
print '*** renamed %s %r => %r' % (kind, old_path, new_path)
392
115
if text_modified:
393
_maybe_diff_file_or_symlink(old_name, old_tree, file_id,
395
True, kind, to_file, diff_file)
400
def _patch_header_date(tree, file_id, path):
401
"""Returns a timestamp suitable for use in a patch header."""
402
tm = time.gmtime(tree.get_file_mtime(file_id, path))
403
return time.strftime('%Y-%m-%d %H:%M:%S +0000', tm)
406
def _raise_if_nonexistent(paths, old_tree, new_tree):
407
"""Complain if paths are not in either inventory or tree.
409
It's OK with the files exist in either tree's inventory, or
410
if they exist in the tree but are not versioned.
116
_diff_one(old_tree.get_file(file_id).readlines(),
117
new_tree.get_file(file_id).readlines(),
119
fromfile=old_label + old_path,
120
tofile=new_label + new_path)
122
for path, file_id, kind in delta.modified:
123
print '*** modified %s %r' % (kind, path)
125
_diff_one(old_tree.get_file(file_id).readlines(),
126
new_tree.get_file(file_id).readlines(),
128
fromfile=old_label + path,
129
tofile=new_label + path)
134
"""Describes changes from one tree to another.
143
(oldpath, newpath, id, kind, text_modified)
149
Each id is listed only once.
151
Files that are both modified and renamed are listed only in
152
renamed, with the text_modified flag true.
154
The lists are normally sorted when the delta is created.
163
def show(self, to_file, show_ids=False, show_unchanged=False):
164
def show_list(files):
165
for path, fid, kind in files:
166
if kind == 'directory':
168
elif kind == 'symlink':
172
print >>to_file, ' %-30s %s' % (path, fid)
174
print >>to_file, ' ', path
177
print >>to_file, 'removed:'
178
show_list(self.removed)
181
print >>to_file, 'added:'
182
show_list(self.added)
185
print >>to_file, 'renamed:'
186
for oldpath, newpath, fid, kind, text_modified in self.renamed:
188
print >>to_file, ' %s => %s %s' % (oldpath, newpath, fid)
190
print >>to_file, ' %s => %s' % (oldpath, newpath)
193
print >>to_file, 'modified:'
194
show_list(self.modified)
196
if show_unchanged and self.unchanged:
197
print >>to_file, 'unchanged:'
198
show_list(self.unchanged)
202
def compare_trees(old_tree, new_tree, want_unchanged, specific_files=None):
203
"""Describe changes from one tree to another.
205
Returns a TreeDelta with details of added, modified, renamed, and
208
The root entry is specifically exempt.
210
This only considers versioned files.
213
If true, also list files unchanged from one version to
217
If true, only check for changes to specified names or
221
from osutils import is_inside_any
412
This can be used by operations such as bzr status that can accept
413
unknown or ignored files.
415
mutter("check paths: %r", paths)
418
s = old_tree.filter_unversioned_files(paths)
419
s = new_tree.filter_unversioned_files(s)
420
s = [path for path in s if not new_tree.has_filename(path)]
422
raise errors.PathsDoNotExist(sorted(s))
425
def get_prop_change(meta_modified):
427
return " (properties changed)"
432
def _maybe_diff_file_or_symlink(old_path, old_tree, file_id,
433
new_path, new_tree, text_modified,
434
kind, to_file, diff_file):
436
new_entry = new_tree.inventory[file_id]
437
old_tree.inventory[file_id].diff(diff_file,
223
old_inv = old_tree.inventory
224
new_inv = new_tree.inventory
226
mutter('start compare_trees')
228
# TODO: match for specific files can be rather smarter by finding
229
# the IDs of those files up front and then considering only that.
231
for file_id in old_tree:
232
if file_id in new_tree:
233
kind = old_inv.get_file_kind(file_id)
234
assert kind == new_inv.get_file_kind(file_id)
236
assert kind in ('file', 'directory', 'symlink', 'root_directory'), \
237
'invalid file kind %r' % kind
239
if kind == 'root_directory':
242
old_path = old_inv.id2path(file_id)
243
new_path = new_inv.id2path(file_id)
246
if (not is_inside_any(specific_files, old_path)
247
and not is_inside_any(specific_files, new_path)):
251
old_sha1 = old_tree.get_file_sha1(file_id)
252
new_sha1 = new_tree.get_file_sha1(file_id)
253
text_modified = (old_sha1 != new_sha1)
255
## mutter("no text to check for %r %r" % (file_id, kind))
256
text_modified = False
258
# TODO: Can possibly avoid calculating path strings if the
259
# two files are unchanged and their names and parents are
260
# the same and the parents are unchanged all the way up.
261
# May not be worthwhile.
263
if old_path != new_path:
264
delta.renamed.append((old_path, new_path, file_id, kind,
267
delta.modified.append((new_path, file_id, kind))
269
delta.unchanged.append((new_path, file_id, kind))
271
old_path = old_inv.id2path(file_id)
273
if not is_inside_any(specific_files, old_path):
275
delta.removed.append((old_path, file_id, kind))
277
mutter('start looking for new files')
278
for file_id in new_inv:
279
if file_id in old_inv:
281
new_path = new_inv.id2path(file_id)
283
if not is_inside_any(specific_files, new_path):
285
kind = new_inv.get_file_kind(file_id)
286
delta.added.append((new_path, file_id, kind))
291
delta.modified.sort()
292
delta.unchanged.sort()