55
40
# both sequences are empty.
56
41
if not oldlines and not newlines:
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)
46
if oldlines and (oldlines[-1][-1] != '\n'):
49
if newlines and (newlines[-1][-1] != '\n'):
53
ud = difflib.unified_diff(oldlines, newlines, **kw)
71
55
# work-around for difflib being too smart for its own good
72
56
# if /dev/null is "1,0", patch won't recognize it as /dev/null
74
59
ud[2] = ud[2].replace('-1,0', '-0,0')
76
62
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'
83
if not line.endswith('\n'):
84
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"
88
def external_diff(old_filename, oldlines, new_filename, newlines, to_file,
90
"""Display a diff by calling out to the external diff program."""
91
if hasattr(to_file, 'fileno'):
70
def show_diff(b, revision, specific_files):
74
old_tree = b.basis_tree()
95
out_file = subprocess.PIPE
98
# make sure our own output is properly ordered before the diff
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')
107
# TODO: perhaps a special case for comparing to or from the empty
108
# sequence; can just use /dev/null on Unix
110
# TODO: if either of the files being compared already exists as a
111
# regular named file (e.g. in the working directory) then we can
112
# compare directly to that, rather than copying it.
114
oldtmpf.writelines(oldlines)
115
newtmpf.writelines(newlines)
123
'--label', old_filename,
125
'--label', new_filename,
130
# diff only allows one style to be specified; they don't override.
131
# note that some of these take optargs, and the optargs can be
132
# directly appended to the options.
133
# this is only an approximate parser; it doesn't properly understand
135
for s in ['-c', '-u', '-C', '-U',
140
'-y', '--side-by-side',
152
diffcmd.extend(diff_opts)
155
pipe = subprocess.Popen(diffcmd,
156
stdin=subprocess.PIPE,
159
if e.errno == errno.ENOENT:
160
raise errors.NoDiff(str(e))
165
bzrlib.osutils.pumpfile(pipe.stdout, to_file)
76
old_tree = b.revision_tree(b.lookup_revision(revision))
168
if rc != 0 and rc != 1:
169
# returns 1 if files differ; that's OK
171
msg = 'signal %d' % (-rc)
173
msg = 'exit code %d' % rc
175
raise BzrError('external diff failed with %s; command: %r' % (rc, diffcmd))
177
oldtmpf.close() # and delete
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):
199
"""Shortcut for showing the diff to the working tree.
201
Please use show_diff_trees instead.
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)
278
def show_diff_trees(old_tree, new_tree, to_file, specific_files=None,
279
external_diff_options=None,
280
old_label='a/', new_label='b/'):
281
"""Show in text form the changes from one tree to another.
284
If set, include only changes to these files.
286
external_diff_options
287
If set, use an external GNU diff and pass these options.
293
return _show_diff_trees(old_tree, new_tree, to_file,
294
specific_files, external_diff_options,
295
old_label=old_label, new_label=new_label)
302
def _show_diff_trees(old_tree, new_tree, to_file,
303
specific_files, external_diff_options,
304
old_label='a/', new_label='b/' ):
306
# GNU Patch uses the epoch date to detect files that are being added
307
# or removed in a diff.
308
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.
310
89
# TODO: Generation of pseudo-diffs for added/deleted files could
311
90
# be usefully made into a much faster special case.
313
_raise_if_doubly_unversioned(specific_files, old_tree, new_tree)
315
if external_diff_options:
316
assert isinstance(external_diff_options, basestring)
317
opts = external_diff_options.split()
318
def diff_file(olab, olines, nlab, nlines, to_file):
319
external_diff(olab, olines, nlab, nlines, to_file, opts)
321
diff_file = internal_diff
323
92
delta = compare_trees(old_tree, new_tree, want_unchanged=False,
324
93
specific_files=specific_files)
327
95
for path, file_id, kind in delta.removed:
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)
96
print '*** removed %s %r' % (kind, path)
98
_diff_one(old_tree.get_file(file_id).readlines(),
101
fromfile=old_label + path,
335
104
for path, file_id, kind in delta.added:
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))
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)
368
115
if text_modified:
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,
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
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()