140
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show_list(self.unchanged)
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def compare_trees(old_tree, new_tree, want_unchanged=False, specific_files=None):
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"""Describe changes from one tree to another.
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Returns a TreeDelta with details of added, modified, renamed, and
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The root entry is specifically exempt.
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This only considers versioned files.
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If true, also list files unchanged from one version to
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If true, only check for changes to specified names or
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@deprecated_function(zero_nine)
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def compare_trees(old_tree, new_tree, want_unchanged=False,
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specific_files=None, extra_trees=None,
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require_versioned=False):
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"""compare_trees was deprecated in 0.10. Please see Tree.changes_from."""
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return new_tree.changes_from(old_tree,
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want_unchanged=want_unchanged,
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specific_files=specific_files,
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extra_trees=extra_trees,
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require_versioned=require_versioned)
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def _compare_trees(old_tree, new_tree, want_unchanged, specific_file_ids):
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160
from osutils import is_inside_any
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162
old_inv = old_tree.inventory
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163
new_inv = new_tree.inventory
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delta = TreeDelta()
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mutter('start compare_trees')
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# TODO: match for specific files can be rather smarter by finding
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# the IDs of those files up front and then considering only that.
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for file_id in old_tree:
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if file_id in new_tree:
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old_ie = old_inv[file_id]
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new_ie = new_inv[file_id]
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assert kind == new_ie.kind
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assert kind in InventoryEntry.known_kinds, \
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'invalid file kind %r' % kind
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if kind == 'root_directory':
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if (not is_inside_any(specific_files, old_inv.id2path(file_id))
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and not is_inside_any(specific_files, new_inv.id2path(file_id))):
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# temporary hack until all entries are populated before clients
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old_path = old_inv.id2path(file_id)
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new_path = new_inv.id2path(file_id)
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old_ie._read_tree_state(old_path, old_tree)
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new_ie._read_tree_state(new_path, new_tree)
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text_modified, meta_modified = new_ie.detect_changes(old_ie)
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# TODO: Can possibly avoid calculating path strings if the
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# two files are unchanged and their names and parents are
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# the same and the parents are unchanged all the way up.
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# May not be worthwhile.
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if (old_ie.name != new_ie.name
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or old_ie.parent_id != new_ie.parent_id):
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delta.renamed.append((old_path,
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text_modified, meta_modified))
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elif text_modified or meta_modified:
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delta.modified.append((new_path, file_id, kind,
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text_modified, meta_modified))
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delta.unchanged.append((new_path, file_id, kind))
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kind = old_inv.get_file_kind(file_id)
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if kind == 'root_directory':
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old_path = old_inv.id2path(file_id)
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if not is_inside_any(specific_files, old_path):
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delta.removed.append((old_path, file_id, kind))
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mutter('start looking for new files')
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for file_id in new_inv:
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if file_id in old_inv or file_id not in new_tree:
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kind = new_inv.get_file_kind(file_id)
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if kind == 'root_directory':
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new_path = new_inv.id2path(file_id)
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if not is_inside_any(specific_files, new_path):
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delta.added.append((new_path, file_id, kind))
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# mutter('start compare_trees')
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# TODO: Rather than iterating over the whole tree and then filtering, we
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# could diff just the specified files (if any) and their subtrees.
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old_files = old_tree.list_files()
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new_files = new_tree.list_files()
182
except StopIteration:
183
return None, None, None, None, None
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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)
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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."""
190
assert old_entry.kind == new_entry.kind
192
if specific_file_ids:
193
if (old_entry.file_id not in specific_file_ids and
194
new_entry.file_id not in specific_file_ids):
197
# temporary hack until all entries are populated before clients
199
old_entry._read_tree_state(old_path, old_tree)
200
new_entry._read_tree_state(new_path, new_tree)
201
text_modified, meta_modified = new_entry.detect_changes(old_entry)
203
# If the name changes, or the parent_id changes, we have a rename
204
# (if we move a parent, that doesn't count as a rename for the file)
205
if (old_entry.name != new_entry.name
206
or old_entry.parent_id != new_entry.parent_id):
207
delta.renamed.append((old_path,
209
old_entry.file_id, old_entry.kind,
210
text_modified, meta_modified))
211
elif text_modified or meta_modified:
212
delta.modified.append((new_path, new_entry.file_id, new_entry.kind,
213
text_modified, meta_modified))
215
delta.unchanged.append((new_path, new_entry.file_id, new_entry.kind))
218
def handle_old(path, entry):
219
"""old entry without a new entry match
221
Check to see if a matching new entry was already seen as an
222
added file, and switch the pair into being a rename.
223
Otherwise just mark the old entry being removed.
225
if entry.file_id in added:
226
# Actually this is a rename, we found a new file_id earlier
227
# at a different location, so it is no-longer added
228
x_new_path, x_new_entry = added.pop(entry.file_id)
229
check_matching(path, entry, x_new_path, x_new_entry)
231
# We have an old_file_id which doesn't line up with a new_file_id
232
# So this file looks to be removed
233
assert entry.file_id not in removed
234
removed[entry.file_id] = path, entry
236
def handle_new(path, entry):
237
"""new entry without an old entry match
239
Check to see if a matching old entry was already seen as a
240
removal, and change the pair into a rename.
241
Otherwise just mark the new entry as an added file.
243
if entry.file_id in removed:
244
# We saw this file_id earlier at an old different location
245
# it is no longer removed, just renamed
246
x_old_path, x_old_entry = removed.pop(entry.file_id)
247
check_matching(x_old_path, x_old_entry, path, entry)
249
# We have a new file which does not match an old file
251
assert entry.file_id not in added
252
added[entry.file_id] = path, entry
254
while old_path or new_path:
255
# list_files() returns files in alphabetical path sorted order
256
if old_path == new_path:
257
if old_file_id == new_file_id:
258
# This is the common case, the files are in the same place
259
# check if there were any content changes
261
if old_file_id is None:
262
# We have 2 unversioned files, no deltas possible???
265
check_matching(old_path, old_entry, new_path, new_entry)
267
# The ids don't match, so we have to handle them both
269
if old_file_id is not None:
270
handle_old(old_path, old_entry)
272
if new_file_id is not None:
273
handle_new(new_path, new_entry)
275
# The two entries were at the same path, so increment both sides
276
old_path, old_class, old_kind, old_file_id, old_entry = get_next(old_files)
277
new_path, new_class, new_kind, new_file_id, new_entry = get_next(new_files)
278
elif new_path is None or (old_path is not None and old_path < new_path):
279
# Assume we don't match, only process old_path
280
if old_file_id is not None:
281
handle_old(old_path, old_entry)
282
# old_path came first, so increment it, trying to match up
283
old_path, old_class, old_kind, old_file_id, old_entry = get_next(old_files)
284
elif new_path is not None:
285
# new_path came first, so increment it, trying to match up
286
if new_file_id is not None:
287
handle_new(new_path, new_entry)
288
new_path, new_class, new_kind, new_file_id, new_entry = get_next(new_files)
290
# Now we have a set of added and removed files, mark them all
291
for old_path, old_entry in removed.itervalues():
292
if specific_file_ids:
293
if not old_entry.file_id in specific_file_ids:
295
delta.removed.append((old_path, old_entry.file_id, old_entry.kind))
296
for new_path, new_entry in added.itervalues():
297
if specific_file_ids:
298
if not new_entry.file_id in specific_file_ids:
300
delta.added.append((new_path, new_entry.file_id, new_entry.kind))
239
302
delta.removed.sort()
240
303
delta.added.sort()
241
304
delta.renamed.sort()
305
# TODO: jam 20060529 These lists shouldn't need to be sorted
306
# since we added them in alphabetical order.
242
307
delta.modified.sort()
243
308
delta.unchanged.sort()