152
173
want_unchanged=want_unchanged,
153
174
specific_files=specific_files,
154
175
extra_trees=extra_trees,
155
require_versioned=require_versioned)
176
require_versioned=require_versioned,
158
180
def _compare_trees(old_tree, new_tree, want_unchanged, specific_file_ids,
161
from osutils import is_inside_any
163
old_inv = old_tree.inventory
164
new_inv = new_tree.inventory
165
182
delta = TreeDelta()
166
183
# mutter('start compare_trees')
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# TODO: Rather than iterating over the whole tree and then filtering, we
169
# could diff just the specified files (if any) and their subtrees.
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old_files = old_tree.list_files(include_root)
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new_files = new_tree.list_files(include_root)
183
except StopIteration:
184
return None, None, None, None, None
185
old_path, old_class, old_kind, old_file_id, old_entry = get_next(old_files)
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new_path, new_class, new_kind, new_file_id, new_entry = get_next(new_files)
189
def check_matching(old_path, old_entry, new_path, new_entry):
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"""We have matched up 2 file_ids, check for changes."""
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assert old_entry.kind == new_entry.kind
193
if specific_file_ids:
194
if (old_entry.file_id not in specific_file_ids and
195
new_entry.file_id not in specific_file_ids):
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# temporary hack until all entries are populated before clients
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old_entry._read_tree_state(old_path, old_tree)
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new_entry._read_tree_state(new_path, new_tree)
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text_modified, meta_modified = new_entry.detect_changes(old_entry)
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# If the name changes, or the parent_id changes, we have a rename
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# (if we move a parent, that doesn't count as a rename for the file)
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if (old_entry.name != new_entry.name
207
or old_entry.parent_id != new_entry.parent_id):
185
for (file_id, path, content_change, versioned, parent_id, name, kind,
186
executable) in new_tree._iter_changes(old_tree, want_unchanged,
188
if not include_root and (None, None) == parent_id:
190
assert kind[0] == kind[1] or None in kind
191
# the only 'kind change' permitted is creation/deletion
192
fully_present = tuple((versioned[x] and kind[x] is not None) for
194
if fully_present[0] != fully_present[1]:
195
if fully_present[1] is True:
196
delta.added.append((path, file_id, kind[1]))
198
assert fully_present[0] is True
199
old_path = old_tree.id2path(file_id)
200
delta.removed.append((old_path, file_id, kind[0]))
201
elif fully_present[0] is False:
203
elif name[0] != name[1] or parent_id[0] != parent_id[1]:
204
# If the name changes, or the parent_id changes, we have a rename
205
# (if we move a parent, that doesn't count as a rename for the
207
old_path = old_tree.id2path(file_id)
208
208
delta.renamed.append((old_path,
210
old_entry.file_id, old_entry.kind,
211
text_modified, meta_modified))
212
elif text_modified or meta_modified:
213
delta.modified.append((new_path, new_entry.file_id, new_entry.kind,
214
text_modified, meta_modified))
216
delta.unchanged.append((new_path, new_entry.file_id, new_entry.kind))
219
def handle_old(path, entry):
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"""old entry without a new entry match
222
Check to see if a matching new entry was already seen as an
223
added file, and switch the pair into being a rename.
224
Otherwise just mark the old entry being removed.
226
if entry.file_id in added:
227
# Actually this is a rename, we found a new file_id earlier
228
# at a different location, so it is no-longer added
229
x_new_path, x_new_entry = added.pop(entry.file_id)
230
check_matching(path, entry, x_new_path, x_new_entry)
232
# We have an old_file_id which doesn't line up with a new_file_id
233
# So this file looks to be removed
234
assert entry.file_id not in removed
235
removed[entry.file_id] = path, entry
237
def handle_new(path, entry):
238
"""new entry without an old entry match
240
Check to see if a matching old entry was already seen as a
241
removal, and change the pair into a rename.
242
Otherwise just mark the new entry as an added file.
244
if entry.file_id in removed:
245
# We saw this file_id earlier at an old different location
246
# it is no longer removed, just renamed
247
x_old_path, x_old_entry = removed.pop(entry.file_id)
248
check_matching(x_old_path, x_old_entry, path, entry)
250
# We have a new file which does not match an old file
252
assert entry.file_id not in added
253
added[entry.file_id] = path, entry
255
while old_path is not None or new_path is not None:
256
# list_files() returns files in alphabetical path sorted order
257
if old_path == new_path:
258
if old_file_id == new_file_id:
259
# This is the common case, the files are in the same place
260
# check if there were any content changes
262
if old_file_id is None:
263
# We have 2 unversioned files, no deltas possible???
266
check_matching(old_path, old_entry, new_path, new_entry)
268
# The ids don't match, so we have to handle them both
270
if old_file_id is not None:
271
handle_old(old_path, old_entry)
273
if new_file_id is not None:
274
handle_new(new_path, new_entry)
276
# The two entries were at the same path, so increment both sides
277
old_path, old_class, old_kind, old_file_id, old_entry = get_next(old_files)
278
new_path, new_class, new_kind, new_file_id, new_entry = get_next(new_files)
279
elif new_path is None or (old_path is not None and old_path < new_path):
280
# Assume we don't match, only process old_path
281
if old_file_id is not None:
282
handle_old(old_path, old_entry)
283
# old_path came first, so increment it, trying to match up
284
old_path, old_class, old_kind, old_file_id, old_entry = get_next(old_files)
285
elif new_path is not None:
286
# new_path came first, so increment it, trying to match up
287
if new_file_id is not None:
288
handle_new(new_path, new_entry)
289
new_path, new_class, new_kind, new_file_id, new_entry = get_next(new_files)
291
# Now we have a set of added and removed files, mark them all
292
for old_path, old_entry in removed.itervalues():
293
if specific_file_ids:
294
if not old_entry.file_id in specific_file_ids:
296
delta.removed.append((old_path, old_entry.file_id, old_entry.kind))
297
for new_path, new_entry in added.itervalues():
298
if specific_file_ids:
299
if not new_entry.file_id in specific_file_ids:
301
delta.added.append((new_path, new_entry.file_id, new_entry.kind))
213
(executable[0] != executable[1])))
214
elif content_change is True or executable[0] != executable[1]:
215
delta.modified.append((path, file_id, kind[1],
217
(executable[0] != executable[1])))
219
delta.unchanged.append((path, file_id, kind[1]))
303
221
delta.removed.sort()
304
222
delta.added.sort()
309
227
delta.unchanged.sort()
232
class ChangeReporter(object):
233
"""Report changes between two trees"""
235
def __init__(self, old_inventory, output=None):
236
self.old_inventory = old_inventory
238
if self.output is None:
239
from bzrlib import trace
240
self.output = trace.note
242
def report(self, file_id, path, versioned, renamed, modified, exe_change,
244
"""Report one change to a file
246
:param file_id: The file_id of the file
247
:param path: The path the file has (or would have) in the tree (as
248
generated by Tree._iter_changes)
249
:param versioned: may be 'added', 'removed', or 'unchanged'
250
:param renamed: may be True or False
251
:param modified: may be 'created', 'deleted', 'kind changed',
252
'modified' or 'unchanged'.
253
:param exe_change: True if the execute bit has changed
254
:param kind: A pair of file kinds, as generated by Tree._iter_changes.
255
None indicates no file present.
257
modified_map = {'kind changed': 'K',
262
versioned_map = {'added': '+',
267
old_path = self.old_inventory.id2path(file_id)
270
rename = versioned_map[versioned]
271
if modified == 'kind changed':
274
if modified == 'deleted':
275
path += osutils.kind_marker(kind[0])
277
path += osutils.kind_marker(kind[1])
279
old_path += "%s => " % osutils.kind_marker(kind[0])
284
self.output("%s%s%s %s%s", rename, modified_map[modified], exe,
288
def report_changes(change_iterator, reporter):
289
"""Report the changes from a change iterator.
291
This is essentially a translation from low-level to medium-level changes.
292
Further processing may be required to produce a human-readable output.
293
Unfortunately, some tree-changing operations are very complex
294
:change_iterator: an iterator or sequence of changes in the format
295
generated by Tree._iter_changes
296
:param reporter: The ChangeReporter that will report the changes.
298
for (file_id, path, content_change, versioned, parent_id, name, kind,
299
executable) in change_iterator:
301
# files are "renamed" if they are moved or if name changes, as long
303
if None not in name and (name[0] != name[1] or
304
parent_id[0] != parent_id[1]):
308
if kind[0] != kind[1]:
311
elif kind[1] is None:
314
modified = "kind changed"
317
modified = "modified"
319
modified = "unchanged"
320
if kind[1] == "file":
321
exe_change = (executable[0] != executable[1])
322
if versioned[0] != versioned[1]:
324
versioned_change = "removed"
326
versioned_change = "added"
328
versioned_change = "unchanged"
329
reporter.report(file_id, path, versioned_change, renamed, modified,