1
# Copyright (C) 2008 Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18
from cStringIO import StringIO
40
class UseEditor(Exception):
41
"""Use an editor instead of selecting hunks."""
44
class ShelfReporter(object):
46
vocab = {'add file': 'Shelve adding file "%(path)s"?',
47
'binary': 'Shelve binary changes?',
48
'change kind': 'Shelve changing "%s" from %(other)s'
50
'delete file': 'Shelve removing file "%(path)s"?',
51
'final': 'Shelve %d change(s)?',
53
'modify target': 'Shelve changing target of'
54
' "%(path)s" from "%(other)s" to "%(this)s"?',
55
'rename': 'Shelve renaming "%(other)s" =>'
62
self.delta_reporter = delta._ChangeReporter()
65
"""Report that no changes were selected to apply."""
66
trace.warning('No changes to shelve.')
68
def shelved_id(self, shelf_id):
69
"""Report the id changes were shelved to."""
70
trace.note('Changes shelved with id "%d".' % shelf_id)
72
def changes_destroyed(self):
73
"""Report that changes were made without shelving."""
74
trace.note('Selected changes destroyed.')
76
def selected_changes(self, transform):
77
"""Report the changes that were selected."""
78
trace.note("Selected changes:")
79
changes = transform.iter_changes()
80
delta.report_changes(changes, self.delta_reporter)
82
def prompt_change(self, change):
83
"""Determine the prompt for a change to apply."""
84
if change[0] == 'rename':
85
vals = {'this': change[3], 'other': change[2]}
86
elif change[0] == 'change kind':
87
vals = {'path': change[4], 'other': change[2], 'this': change[3]}
88
elif change[0] == 'modify target':
89
vals = {'path': change[2], 'other': change[3], 'this': change[4]}
91
vals = {'path': change[3]}
92
prompt = self.vocab[change[0]] % vals
96
class ApplyReporter(ShelfReporter):
98
vocab = {'add file': 'Delete file "%(path)s"?',
99
'binary': 'Apply binary changes?',
100
'change kind': 'Change "%(path)s" from %(this)s'
102
'delete file': 'Add file "%(path)s"?',
103
'final': 'Apply %d change(s)?',
104
'hunk': 'Apply change?',
105
'modify target': 'Change target of'
106
' "%(path)s" from "%(this)s" to "%(other)s"?',
107
'rename': 'Rename "%(this)s" => "%(other)s"?',
112
def changes_destroyed(self):
116
class Shelver(object):
117
"""Interactively shelve the changes in a working tree."""
119
def __init__(self, work_tree, target_tree, diff_writer=None, auto=False,
120
auto_apply=False, file_list=None, message=None,
121
destroy=False, manager=None, reporter=None):
124
:param work_tree: The working tree to shelve changes from.
125
:param target_tree: The "unchanged" / old tree to compare the
127
:param auto: If True, shelve each possible change.
128
:param auto_apply: If True, shelve changes with no final prompt.
129
:param file_list: If supplied, only files in this list may be shelved.
130
:param message: The message to associate with the shelved changes.
131
:param destroy: Change the working tree without storing the shelved
133
:param manager: The shelf manager to use.
134
:param reporter: Object for reporting changes to user.
136
self.work_tree = work_tree
137
self.target_tree = target_tree
138
self.diff_writer = diff_writer
139
if self.diff_writer is None:
140
self.diff_writer = sys.stdout
142
manager = work_tree.get_shelf_manager()
143
self.manager = manager
145
self.auto_apply = auto_apply
146
self.file_list = file_list
147
self.message = message
148
self.destroy = destroy
150
reporter = ShelfReporter()
151
self.reporter = reporter
152
config = self.work_tree.branch.get_config()
153
self.change_editor = config.get_change_editor(target_tree, work_tree)
154
self.work_tree.lock_tree_write()
157
def from_args(klass, diff_writer, revision=None, all=False, file_list=None,
158
message=None, directory='.', destroy=False):
159
"""Create a shelver from commandline arguments.
161
The returned shelver wil have a work_tree that is locked and should
164
:param revision: RevisionSpec of the revision to compare to.
165
:param all: If True, shelve all changes without prompting.
166
:param file_list: If supplied, only files in this list may be shelved.
167
:param message: The message to associate with the shelved changes.
168
:param directory: The directory containing the working tree.
169
:param destroy: Change the working tree without storing the shelved
172
tree, path = workingtree.WorkingTree.open_containing(directory)
173
# Ensure that tree is locked for the lifetime of target_tree, as
174
# target tree may be reading from the same dirstate.
175
tree.lock_tree_write()
177
target_tree = builtins._get_one_revision_tree('shelf2', revision,
179
files = builtins.safe_relpath_files(tree, file_list)
180
return klass(tree, target_tree, diff_writer, all, all, files,
186
"""Interactively shelve the changes."""
187
creator = shelf.ShelfCreator(self.work_tree, self.target_tree,
189
self.tempdir = tempfile.mkdtemp()
192
for change in creator.iter_shelvable():
193
if change[0] == 'modify text':
195
changes_shelved += self.handle_modify_text(creator,
197
except errors.BinaryFile:
198
if self.prompt_bool(self.reporter.vocab['binary']):
200
creator.shelve_content_change(change[1])
202
if self.prompt_bool(self.reporter.prompt_change(change)):
203
creator.shelve_change(change)
205
if changes_shelved > 0:
206
self.reporter.selected_changes(creator.work_transform)
207
if (self.auto_apply or self.prompt_bool(
208
self.reporter.vocab['final'] % changes_shelved)):
211
self.reporter.changes_destroyed()
213
shelf_id = self.manager.shelve_changes(creator,
215
self.reporter.shelved_id(shelf_id)
217
self.reporter.no_changes()
219
shutil.rmtree(self.tempdir)
223
if self.change_editor is not None:
224
self.change_editor.finish()
225
self.work_tree.unlock()
228
def get_parsed_patch(self, file_id, invert=False):
229
"""Return a parsed version of a file's patch.
231
:param file_id: The id of the file to generate a patch for.
232
:param invert: If True, provide an inverted patch (insertions displayed
233
as removals, removals displayed as insertions).
234
:return: A patches.Patch.
236
diff_file = StringIO()
238
old_tree = self.work_tree
239
new_tree = self.target_tree
241
old_tree = self.target_tree
242
new_tree = self.work_tree
243
old_path = old_tree.id2path(file_id)
244
new_path = new_tree.id2path(file_id)
245
text_differ = diff.DiffText(old_tree, new_tree, diff_file)
246
patch = text_differ.diff(file_id, old_path, new_path, 'file', 'file')
248
return patches.parse_patch(diff_file)
250
def prompt(self, message):
251
"""Prompt the user for a character.
253
:param message: The message to prompt a user with.
254
:return: A character.
256
sys.stdout.write(message)
257
char = osutils.getchar()
258
sys.stdout.write("\r" + ' ' * len(message) + '\r')
262
def prompt_bool(self, question, long=False, allow_editor=False):
263
"""Prompt the user with a yes/no question.
265
This may be overridden by self.auto. It may also *set* self.auto. It
266
may also raise UserAbort.
267
:param question: The question to ask the user.
268
:return: True or False
275
editor_string = '(E)dit manually, '
276
prompt = ' [(y)es, (N)o, %s(f)inish, or (q)uit]' % editor_string
280
prompt = ' [yN%sfq?]' % editor_string
281
char = self.prompt(question + prompt)
284
elif char == 'e' and allow_editor:
290
return self.prompt_bool(question, long=True)
292
raise errors.UserAbort()
296
def handle_modify_text(self, creator, file_id):
297
"""Handle modified text, by using hunk selection or file editing.
299
:param creator: A ShelfCreator.
300
:param file_id: The id of the file that was modified.
301
:return: The number of changes.
303
work_tree_lines = self.work_tree.get_file_lines(file_id)
305
lines, change_count = self._select_hunks(creator, file_id,
308
lines, change_count = self._edit_file(file_id, work_tree_lines)
309
if change_count != 0:
310
creator.shelve_lines(file_id, lines)
313
def _select_hunks(self, creator, file_id, work_tree_lines):
314
"""Provide diff hunk selection for modified text.
316
If self.reporter.invert_diff is True, the diff is inverted so that
317
insertions are displayed as removals and vice versa.
319
:param creator: a ShelfCreator
320
:param file_id: The id of the file to shelve.
321
:param work_tree_lines: Line contents of the file in the working tree.
322
:return: number of shelved hunks.
324
if self.reporter.invert_diff:
325
target_lines = work_tree_lines
327
target_lines = self.target_tree.get_file_lines(file_id)
328
textfile.check_text_lines(work_tree_lines)
329
textfile.check_text_lines(target_lines)
330
parsed = self.get_parsed_patch(file_id, self.reporter.invert_diff)
334
self.diff_writer.write(parsed.get_header())
335
for hunk in parsed.hunks:
336
self.diff_writer.write(str(hunk))
337
selected = self.prompt_bool(self.reporter.vocab['hunk'],
338
allow_editor=(self.change_editor
340
if not self.reporter.invert_diff:
341
selected = (not selected)
343
hunk.mod_pos += offset
344
final_hunks.append(hunk)
346
offset -= (hunk.mod_range - hunk.orig_range)
348
if self.reporter.invert_diff:
349
change_count = len(final_hunks)
351
change_count = len(parsed.hunks) - len(final_hunks)
352
patched = patches.iter_patched_from_hunks(target_lines,
354
lines = list(patched)
355
return lines, change_count
357
def _edit_file(self, file_id, work_tree_lines):
359
:param file_id: id of the file to edit.
360
:param work_tree_lines: Line contents of the file in the working tree.
361
:return: (lines, change_region_count), where lines is the new line
362
content of the file, and change_region_count is the number of
365
lines = osutils.split_lines(self.change_editor.edit_file(file_id))
366
return lines, self._count_changed_regions(work_tree_lines, lines)
369
def _count_changed_regions(old_lines, new_lines):
370
matcher = patiencediff.PatienceSequenceMatcher(None, old_lines,
372
blocks = matcher.get_matching_blocks()
373
return len(blocks) - 2
376
class Unshelver(object):
377
"""Unshelve changes into a working tree."""
380
def from_args(klass, shelf_id=None, action='apply', directory='.'):
381
"""Create an unshelver from commandline arguments.
383
The returned shelver wil have a tree that is locked and should
386
:param shelf_id: Integer id of the shelf, as a string.
387
:param action: action to perform. May be 'apply', 'dry-run',
389
:param directory: The directory to unshelve changes into.
391
tree, path = workingtree.WorkingTree.open_containing(directory)
392
tree.lock_tree_write()
394
manager = tree.get_shelf_manager()
395
if shelf_id is not None:
397
shelf_id = int(shelf_id)
399
raise errors.InvalidShelfId(shelf_id)
401
shelf_id = manager.last_shelf()
403
raise errors.BzrCommandError('No changes are shelved.')
404
trace.note('Unshelving changes with id "%d".' % shelf_id)
408
if action == 'dry-run':
409
apply_changes = False
411
if action == 'delete-only':
412
apply_changes = False
417
return klass(tree, manager, shelf_id, apply_changes, delete_shelf,
420
def __init__(self, tree, manager, shelf_id, apply_changes=True,
421
delete_shelf=True, read_shelf=True):
424
:param tree: The working tree to unshelve into.
425
:param manager: The ShelveManager containing the shelved changes.
427
:param apply_changes: If True, apply the shelved changes to the
429
:param delete_shelf: If True, delete the changes from the shelf.
430
:param read_shelf: If True, read the changes from the shelf.
433
manager = tree.get_shelf_manager()
434
self.manager = manager
435
self.shelf_id = shelf_id
436
self.apply_changes = apply_changes
437
self.delete_shelf = delete_shelf
438
self.read_shelf = read_shelf
441
"""Perform the unshelving operation."""
442
self.tree.lock_tree_write()
443
cleanups = [self.tree.unlock]
446
unshelver = self.manager.get_unshelver(self.shelf_id)
447
cleanups.append(unshelver.finalize)
448
if unshelver.message is not None:
449
trace.note('Message: %s' % unshelver.message)
450
change_reporter = delta._ChangeReporter()
451
task = ui.ui_factory.nested_progress_bar()
453
merger = unshelver.make_merger(task)
454
merger.change_reporter = change_reporter
455
if self.apply_changes:
458
self.show_changes(merger)
461
if self.delete_shelf:
462
self.manager.delete_shelf(self.shelf_id)
464
for cleanup in reversed(cleanups):
467
def show_changes(self, merger):
468
"""Show the changes that this operation specifies."""
469
tree_merger = merger.make_merger()
470
# This implicitly shows the changes via the reporter, so we're done...
471
tt = tree_merger.make_preview_transform()
added
removed
bzrlib/shelf_ui.py
