127
156
if meta_modified:
130
print >>to_file, ' %s => %s %s' % (oldpath, newpath, fid)
132
print >>to_file, ' %s => %s' % (oldpath, newpath)
159
to_file.write(indent + '%s %s => %s %s\n' % (
160
short_status_letter, oldpath, newpath, fid))
162
to_file.write(indent + '%s %s => %s\n' % (
163
short_status_letter, oldpath, newpath))
165
if self.kind_changed:
167
short_status_letter = 'K'
169
to_file.write(indent + 'kind changed:\n')
170
short_status_letter = ''
171
for (path, fid, old_kind, new_kind) in self.kind_changed:
176
to_file.write(indent + '%s %s (%s => %s)%s\n' % (
177
short_status_letter, path, old_kind, new_kind, suffix))
134
179
if self.modified or extra_modified:
135
print >>to_file, 'modified:'
136
show_list(self.modified)
137
show_list(extra_modified)
180
short_status_letter = 'M'
182
to_file.write(indent + 'modified:\n')
183
short_status_letter = ''
184
show_list(self.modified, short_status_letter)
185
show_list(extra_modified, short_status_letter)
139
187
if show_unchanged and self.unchanged:
140
print >>to_file, 'unchanged:'
141
show_list(self.unchanged)
145
def compare_trees(old_tree, new_tree, want_unchanged=False, specific_files=None):
146
"""Describe changes from one tree to another.
148
Returns a TreeDelta with details of added, modified, renamed, and
151
The root entry is specifically exempt.
153
This only considers versioned files.
156
If true, also list files unchanged from one version to
160
If true, only check for changes to specified names or
161
files within them. Any unversioned files given have no effect
162
(but this might change in the future).
164
# NB: show_status depends on being able to pass in non-versioned files and
165
# report them as unknown
170
return _compare_trees(old_tree, new_tree, want_unchanged,
178
def _compare_trees(old_tree, new_tree, want_unchanged, specific_files):
180
from osutils import is_inside_any
182
old_inv = old_tree.inventory
183
new_inv = new_tree.inventory
189
to_file.write(indent + 'unchanged:\n')
190
show_list(self.unchanged)
192
show_list(self.unchanged, 'S')
195
to_file.write(indent + 'unknown:\n')
196
show_list(self.unversioned)
198
def get_changes_as_text(self, show_ids=False, show_unchanged=False,
201
output = StringIO.StringIO()
202
self.show(output, show_ids, show_unchanged, short_status)
203
return output.getvalue()
206
def _compare_trees(old_tree, new_tree, want_unchanged, specific_files,
207
include_root, extra_trees=None,
208
require_versioned=False, want_unversioned=False):
209
"""Worker function that implements Tree.changes_from."""
184
210
delta = TreeDelta()
185
mutter('start compare_trees')
187
# TODO: Rather than iterating over the whole tree and then filtering, we
188
# could diff just the specified files (if any) and their subtrees.
189
# Perhaps should take a list of file-ids instead? Need to indicate any
190
# ids or names which were not found in the trees.
192
old_files = old_tree.list_files()
193
new_files = new_tree.list_files()
204
except StopIteration:
205
return None, None, None, None, None
206
old_path, old_class, old_kind, old_file_id, old_entry = get_next(old_files)
207
new_path, new_class, new_kind, new_file_id, new_entry = get_next(new_files)
210
def check_matching(old_path, old_entry, new_path, new_entry):
211
"""We have matched up 2 file_ids, check for changes."""
212
assert old_entry.kind == new_entry.kind
214
if old_entry.kind == 'root_directory':
218
if (not is_inside_any(specific_files, old_path)
219
and not is_inside_any(specific_files, new_path)):
222
# temporary hack until all entries are populated before clients
224
old_entry._read_tree_state(old_path, old_tree)
225
new_entry._read_tree_state(new_path, new_tree)
226
text_modified, meta_modified = new_entry.detect_changes(old_entry)
228
# If the name changes, or the parent_id changes, we have a rename
229
# (if we move a parent, that doesn't count as a rename for the file)
230
if (old_entry.name != new_entry.name
231
or old_entry.parent_id != new_entry.parent_id):
232
delta.renamed.append((old_path,
234
old_entry.file_id, old_entry.kind,
235
text_modified, meta_modified))
236
elif text_modified or meta_modified:
237
delta.modified.append((new_path, new_entry.file_id, new_entry.kind,
238
text_modified, meta_modified))
240
delta.unchanged.append((new_path, new_entry.file_id, new_entry.kind))
243
def handle_old(path, entry):
244
"""old entry without a new entry match
246
Check to see if a matching new entry was already seen as an
247
added file, and switch the pair into being a rename.
248
Otherwise just mark the old entry being removed.
250
if entry.file_id in added:
251
# Actually this is a rename, we found a new file_id earlier
252
# at a different location, so it is no-longer added
253
x_new_path, x_new_entry = added.pop(entry.file_id)
254
check_matching(path, entry, x_new_path, x_new_entry)
256
# We have an old_file_id which doesn't line up with a new_file_id
257
# So this file looks to be removed
258
assert entry.file_id not in removed
259
removed[entry.file_id] = path, entry
261
def handle_new(path, entry):
262
"""new entry without an old entry match
264
Check to see if a matching old entry was already seen as a
265
removal, and change the pair into a rename.
266
Otherwise just mark the new entry as an added file.
268
if entry.file_id in removed:
269
# We saw this file_id earlier at an old different location
270
# it is no longer removed, just renamed
271
x_old_path, x_old_entry = removed.pop(entry.file_id)
272
check_matching(x_old_path, x_old_entry, path, entry)
274
# We have a new file which does not match an old file
276
assert entry.file_id not in added
277
added[entry.file_id] = path, entry
279
while old_path or new_path:
280
# list_files() returns files in alphabetical path sorted order
281
if old_path == new_path:
282
if old_file_id == new_file_id:
283
# This is the common case, the files are in the same place
284
# check if there were any content changes
286
if old_file_id is None:
287
# We have 2 unversioned files, no deltas possible???
290
check_matching(old_path, old_entry, new_path, new_entry)
211
# mutter('start compare_trees')
213
for (file_id, path, content_change, versioned, parent_id, name, kind,
214
executable) in new_tree._iter_changes(old_tree, want_unchanged,
215
specific_files, extra_trees=extra_trees,
216
require_versioned=require_versioned,
217
want_unversioned=want_unversioned):
218
if versioned == (False, False):
219
delta.unversioned.append((path[1], None, kind[1]))
221
if not include_root and (None, None) == parent_id:
223
fully_present = tuple((versioned[x] and kind[x] is not None) for
225
if fully_present[0] != fully_present[1]:
226
if fully_present[1] is True:
227
delta.added.append((path[1], file_id, kind[1]))
292
# The ids don't match, so we have to handle them both
294
if old_file_id is not None:
295
handle_old(old_path, old_entry)
297
if new_file_id is not None:
298
handle_new(new_path, new_entry)
300
# The two entries were at the same path, so increment both sides
301
old_path, old_class, old_kind, old_file_id, old_entry = get_next(old_files)
302
new_path, new_class, new_kind, new_file_id, new_entry = get_next(new_files)
303
elif new_path is None or (old_path is not None and old_path < new_path):
304
# Assume we don't match, only process old_path
305
if old_file_id is not None:
306
handle_old(old_path, old_entry)
307
# old_path came first, so increment it, trying to match up
308
old_path, old_class, old_kind, old_file_id, old_entry = get_next(old_files)
309
elif new_path is not None:
310
# new_path came first, so increment it, trying to match up
311
if new_file_id is not None:
312
handle_new(new_path, new_entry)
313
new_path, new_class, new_kind, new_file_id, new_entry = get_next(new_files)
315
# Now we have a set of added and removed files, mark them all
316
for old_path, old_entry in removed.itervalues():
318
if not is_inside_any(specific_files, old_path):
320
delta.removed.append((old_path, old_entry.file_id, old_entry.kind))
321
for new_path, new_entry in added.itervalues():
323
if not is_inside_any(specific_files, new_path):
325
delta.added.append((new_path, new_entry.file_id, new_entry.kind))
229
assert fully_present[0] is True
230
delta.removed.append((path[0], file_id, kind[0]))
231
elif fully_present[0] is False:
233
elif name[0] != name[1] or parent_id[0] != parent_id[1]:
234
# If the name changes, or the parent_id changes, we have a rename
235
# (if we move a parent, that doesn't count as a rename for the
237
delta.renamed.append((path[0],
242
(executable[0] != executable[1])))
243
elif kind[0] != kind[1]:
244
delta.kind_changed.append((path[1], file_id, kind[0], kind[1]))
245
elif content_change is True or executable[0] != executable[1]:
246
delta.modified.append((path[1], file_id, kind[1],
248
(executable[0] != executable[1])))
250
delta.unchanged.append((path[1], file_id, kind[1]))
327
252
delta.removed.sort()
328
253
delta.added.sort()
333
258
delta.unchanged.sort()
263
class _ChangeReporter(object):
264
"""Report changes between two trees"""
266
def __init__(self, output=None, suppress_root_add=True,
267
output_file=None, unversioned_filter=None):
270
:param output: a function with the signature of trace.note, i.e.
271
accepts a format and parameters.
272
:param supress_root_add: If true, adding the root will be ignored
273
(i.e. when a tree has just been initted)
274
:param output_file: If supplied, a file-like object to write to.
275
Only one of output and output_file may be supplied.
276
:param unversioned_filter: A filter function to be called on
277
unversioned files. This should return True to ignore a path.
278
By default, no filtering takes place.
280
if output_file is not None:
281
if output is not None:
282
raise BzrError('Cannot specify both output and output_file')
283
def output(fmt, *args):
284
output_file.write((fmt % args) + '\n')
286
if self.output is None:
287
from bzrlib import trace
288
self.output = trace.note
289
self.suppress_root_add = suppress_root_add
290
self.modified_map = {'kind changed': 'K',
295
self.versioned_map = {'added': '+', # versioned target
296
'unchanged': ' ', # versioned in both
297
'removed': '-', # versioned in source
298
'unversioned': '?', # versioned in neither
300
self.unversioned_filter = unversioned_filter
302
def report(self, file_id, paths, versioned, renamed, modified, exe_change,
304
"""Report one change to a file
306
:param file_id: The file_id of the file
307
:param path: The old and new paths as generated by Tree._iter_changes.
308
:param versioned: may be 'added', 'removed', 'unchanged', or
310
:param renamed: may be True or False
311
:param modified: may be 'created', 'deleted', 'kind changed',
312
'modified' or 'unchanged'.
313
:param exe_change: True if the execute bit has changed
314
:param kind: A pair of file kinds, as generated by Tree._iter_changes.
315
None indicates no file present.
317
if paths[1] == '' and versioned == 'added' and self.suppress_root_add:
319
if versioned == 'unversioned':
320
# skip ignored unversioned files if needed.
321
if self.unversioned_filter is not None:
322
if self.unversioned_filter(paths[1]):
324
# dont show a content change in the output.
325
modified = 'unchanged'
326
# we show both paths in the following situations:
327
# the file versioning is unchanged AND
328
# ( the path is different OR
329
# the kind is different)
330
if (versioned == 'unchanged' and
331
(renamed or modified == 'kind changed')):
333
# on a rename, we show old and new
334
old_path, path = paths
336
# if its not renamed, we're showing both for kind changes
337
# so only show the new path
338
old_path, path = paths[1], paths[1]
339
# if the file is not missing in the source, we show its kind
340
# when we show two paths.
341
if kind[0] is not None:
342
old_path += osutils.kind_marker(kind[0])
344
elif versioned == 'removed':
345
# not present in target
354
rename = self.versioned_map[versioned]
355
# we show the old kind on the new path when the content is deleted.
356
if modified == 'deleted':
357
path += osutils.kind_marker(kind[0])
358
# otherwise we always show the current kind when there is one
359
elif kind[1] is not None:
360
path += osutils.kind_marker(kind[1])
365
self.output("%s%s%s %s%s", rename, self.modified_map[modified], exe,
369
def report_changes(change_iterator, reporter):
370
"""Report the changes from a change iterator.
372
This is essentially a translation from low-level to medium-level changes.
373
Further processing may be required to produce a human-readable output.
374
Unfortunately, some tree-changing operations are very complex
375
:change_iterator: an iterator or sequence of changes in the format
376
generated by Tree._iter_changes
377
:param reporter: The _ChangeReporter that will report the changes.
379
versioned_change_map = {
380
(True, True) : 'unchanged',
381
(True, False) : 'removed',
382
(False, True) : 'added',
383
(False, False): 'unversioned',
385
for (file_id, path, content_change, versioned, parent_id, name, kind,
386
executable) in change_iterator:
388
# files are "renamed" if they are moved or if name changes, as long
390
if None not in name and None not in parent_id and\
391
(name[0] != name[1] or parent_id[0] != parent_id[1]):
395
if kind[0] != kind[1]:
398
elif kind[1] is None:
401
modified = "kind changed"
404
modified = "modified"
406
modified = "unchanged"
407
if kind[1] == "file":
408
exe_change = (executable[0] != executable[1])
409
versioned_change = versioned_change_map[versioned]
410
reporter.report(file_id, path, versioned_change, renamed, modified,
added
removed
bzrlib/delta.py
