/b-gtk/fix-viz

To get this branch, use:
bzr branch http://gegoxaren.bato24.eu/bzr/b-gtk/fix-viz

« back to all changes in this revision

Viewing changes to diff.py

  • Committer: Aaron Bentley
  • Date: 2008-05-12 20:21:45 UTC
  • mto: This revision was merged to the branch mainline in revision 492.
  • Revision ID: aaron@aaronbentley.com-20080512202145-7dh7wm8avi3ud47q
Update error handling to use window

Show diffs side-by-side

added added

removed removed

Lines of Context:
diff.py
30
30
except ImportError:
31
31
    have_gconf = False
32
32
 
33
 
import bzrlib
34
 
 
35
 
from bzrlib.diff import show_diff_trees
 
33
from bzrlib import (
 
34
    merge as _mod_merge,
 
35
    osutils,
 
36
    progress,
 
37
    urlutils,
 
38
    workingtree,
 
39
)
 
40
from bzrlib.diff import show_diff_trees, internal_diff
36
41
from bzrlib.errors import NoSuchFile
 
42
from bzrlib.patches import parse_patches
37
43
from bzrlib.trace import warning
38
 
 
39
 
 
40
 
class DiffWindow(gtk.Window):
41
 
    """Diff window.
42
 
 
43
 
    This object represents and manages a single window containing the
44
 
    differences between two revisions on a branch.
45
 
    """
 
44
from bzrlib.plugins.gtk.window import Window
 
45
from dialog import error_dialog, info_dialog, warning_dialog
 
46
 
 
47
 
 
48
class SelectCancelled(Exception):
 
49
 
 
50
    pass
 
51
 
 
52
 
 
53
class DiffFileView(gtk.ScrolledWindow):
 
54
    """Window for displaying diffs from a diff file"""
46
55
 
47
56
    def __init__(self):
48
 
        gtk.Window.__init__(self, gtk.WINDOW_TOPLEVEL)
49
 
        self.set_border_width(0)
50
 
        self.set_title("bzrk diff")
51
 
 
52
 
        # Use two thirds of the screen by default
53
 
        screen = self.get_screen()
54
 
        monitor = screen.get_monitor_geometry(0)
55
 
        width = int(monitor.width * 0.66)
56
 
        height = int(monitor.height * 0.66)
57
 
        self.set_default_size(width, height)
58
 
 
 
57
        gtk.ScrolledWindow.__init__(self)
59
58
        self.construct()
 
59
        self._diffs = {}
60
60
 
61
61
    def construct(self):
62
 
        """Construct the window contents."""
63
 
        # The   window  consists  of   a  pane   containing:  the
64
 
        # hierarchical list  of files on  the left, and  the diff
65
 
        # for the currently selected file on the right.
66
 
        pane = gtk.HPaned()
67
 
        self.add(pane)
68
 
        pane.show()
69
 
 
70
 
        # The file hierarchy: a scrollable treeview
71
 
        scrollwin = gtk.ScrolledWindow()
72
 
        scrollwin.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)
73
 
        scrollwin.set_shadow_type(gtk.SHADOW_IN)
74
 
        pane.pack1(scrollwin)
75
 
        scrollwin.show()
76
 
 
77
 
        self.model = gtk.TreeStore(str, str)
78
 
        self.treeview = gtk.TreeView(self.model)
79
 
        self.treeview.set_headers_visible(False)
80
 
        self.treeview.set_search_column(1)
81
 
        self.treeview.connect("cursor-changed", self._treeview_cursor_cb)
82
 
        scrollwin.add(self.treeview)
83
 
        self.treeview.show()
84
 
 
85
 
        cell = gtk.CellRendererText()
86
 
        cell.set_property("width-chars", 20)
87
 
        column = gtk.TreeViewColumn()
88
 
        column.pack_start(cell, expand=True)
89
 
        column.add_attribute(cell, "text", 0)
90
 
        self.treeview.append_column(column)
91
 
 
92
 
        # The diffs of the  selected file: a scrollable source or
93
 
        # text view
94
 
        scrollwin = gtk.ScrolledWindow()
95
 
        scrollwin.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
96
 
        scrollwin.set_shadow_type(gtk.SHADOW_IN)
97
 
        pane.pack2(scrollwin)
98
 
        scrollwin.show()
 
62
        self.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
 
63
        self.set_shadow_type(gtk.SHADOW_IN)
99
64
 
100
65
        if have_gtksourceview:
101
66
            self.buffer = gtksourceview.SourceBuffer()
114
79
 
115
80
        sourceview.set_editable(False)
116
81
        sourceview.modify_font(pango.FontDescription("Monospace"))
117
 
        scrollwin.add(sourceview)
 
82
        self.add(sourceview)
118
83
        sourceview.show()
119
84
 
120
 
    def set_diff(self, description, rev_tree, parent_tree):
121
 
        """Set the differences showed by this window.
122
 
 
123
 
        Compares the two trees and populates the window with the
124
 
        differences.
125
 
        """
126
 
        self.rev_tree = rev_tree
127
 
        self.parent_tree = parent_tree
128
 
 
129
 
        self.model.clear()
130
 
        delta = self.rev_tree.changes_from(self.parent_tree)
131
 
 
132
 
        self.model.append(None, [ "Complete Diff", "" ])
133
 
 
134
 
        if len(delta.added):
135
 
            titer = self.model.append(None, [ "Added", None ])
136
 
            for path, id, kind in delta.added:
137
 
                self.model.append(titer, [ path, path ])
138
 
 
139
 
        if len(delta.removed):
140
 
            titer = self.model.append(None, [ "Removed", None ])
141
 
            for path, id, kind in delta.removed:
142
 
                self.model.append(titer, [ path, path ])
143
 
 
144
 
        if len(delta.renamed):
145
 
            titer = self.model.append(None, [ "Renamed", None ])
146
 
            for oldpath, newpath, id, kind, text_modified, meta_modified \
147
 
                    in delta.renamed:
148
 
                self.model.append(titer, [ oldpath, newpath ])
149
 
 
150
 
        if len(delta.modified):
151
 
            titer = self.model.append(None, [ "Modified", None ])
152
 
            for path, id, kind, text_modified, meta_modified in delta.modified:
153
 
                self.model.append(titer, [ path, path ])
154
 
 
155
 
        self.treeview.expand_all()
156
 
        self.set_title(description + " - bzrk diff")
157
 
 
158
 
    def set_file(self, file_path):
159
 
        tv_path = None
160
 
        for data in self.model:
161
 
            for child in data.iterchildren():
162
 
                if child[0] == file_path or child[1] == file_path:
163
 
                    tv_path = child.path
164
 
                    break
165
 
        if tv_path is None:
166
 
            raise NoSuchFile(file_path)
167
 
        self.treeview.set_cursor(tv_path)
168
 
        self.treeview.scroll_to_cell(tv_path)
169
 
 
170
 
    def _treeview_cursor_cb(self, *args):
171
 
        """Callback for when the treeview cursor changes."""
172
 
        (path, col) = self.treeview.get_cursor()
173
 
        specific_files = [ self.model[path][1] ]
174
 
        if specific_files == [ None ]:
175
 
            return
176
 
        elif specific_files == [ "" ]:
177
 
            specific_files = []
178
 
 
179
 
        s = StringIO()
180
 
        show_diff_trees(self.parent_tree, self.rev_tree, s, specific_files)
181
 
        self.buffer.set_text(s.getvalue().decode(sys.getdefaultencoding(), 'replace'))
182
 
 
183
85
    @staticmethod
184
86
    def apply_gedit_colors(lang):
185
87
        """Set style for lang to that specified in gedit configuration.
186
88
 
187
89
        This method needs the gconf module.
188
 
        
 
90
 
189
91
        :param lang: a gtksourceview.SourceLanguage object.
190
92
        """
191
93
        GEDIT_SYNTAX_PATH = '/apps/gedit-2/preferences/syntax_highlighting'
243
145
 
244
146
            lang.set_tag_style(tag_id, style)
245
147
 
246
 
    @staticmethod
247
 
    def apply_colordiff_colors(lang):
 
148
    @classmethod
 
149
    def apply_colordiff_colors(klass, lang):
248
150
        """Set style colors for lang using the colordiff configuration file.
249
151
 
250
152
        Both ~/.colordiffrc and ~/.colordiffrc.bzr-gtk are read.
261
163
                except IOError, e:
262
164
                    warning('could not open file %s: %s' % (f, str(e)))
263
165
                else:
264
 
                    colors.update(DiffWindow.parse_colordiffrc(f))
 
166
                    colors.update(klass.parse_colordiffrc(f))
265
167
                    f.close()
266
168
 
267
169
        if not colors:
303
205
    @staticmethod
304
206
    def parse_colordiffrc(fileobj):
305
207
        """Parse fileobj as a colordiff configuration file.
306
 
        
 
208
 
307
209
        :return: A dict with the key -> value pairs.
308
210
        """
309
211
        colors = {}
316
218
            colors[key.strip()] = val.strip()
317
219
        return colors
318
220
 
 
221
    def set_trees(self, rev_tree, parent_tree):
 
222
        self.rev_tree = rev_tree
 
223
        self.parent_tree = parent_tree
 
224
#        self._build_delta()
 
225
 
 
226
#    def _build_delta(self):
 
227
#        self.parent_tree.lock_read()
 
228
#        self.rev_tree.lock_read()
 
229
#        try:
 
230
#            self.delta = iter_changes_to_status(self.parent_tree, self.rev_tree)
 
231
#            self.path_to_status = {}
 
232
#            self.path_to_diff = {}
 
233
#            source_inv = self.parent_tree.inventory
 
234
#            target_inv = self.rev_tree.inventory
 
235
#            for (file_id, real_path, change_type, display_path) in self.delta:
 
236
#                self.path_to_status[real_path] = u'=== %s %s' % (change_type, display_path)
 
237
#                if change_type in ('modified', 'renamed and modified'):
 
238
#                    source_ie = source_inv[file_id]
 
239
#                    target_ie = target_inv[file_id]
 
240
#                    sio = StringIO()
 
241
#                    source_ie.diff(internal_diff, *old path, *old_tree,
 
242
#                                   *new_path, target_ie, self.rev_tree,
 
243
#                                   sio)
 
244
#                    self.path_to_diff[real_path] = 
 
245
#
 
246
#        finally:
 
247
#            self.rev_tree.unlock()
 
248
#            self.parent_tree.unlock()
 
249
 
 
250
    def show_diff(self, specific_files):
 
251
        sections = []
 
252
        if specific_files is None:
 
253
            self.buffer.set_text(self._diffs[None])
 
254
        else:
 
255
            for specific_file in specific_files:
 
256
                sections.append(self._diffs[specific_file])
 
257
            self.buffer.set_text(''.join(sections))
 
258
 
 
259
 
 
260
class DiffView(DiffFileView):
 
261
    """This is the soft and chewy filling for a DiffWindow."""
 
262
 
 
263
    def __init__(self):
 
264
        DiffFileView.__init__(self)
 
265
        self.rev_tree = None
 
266
        self.parent_tree = None
 
267
 
 
268
    def show_diff(self, specific_files):
 
269
        """Show the diff for the specified files"""
 
270
        s = StringIO()
 
271
        show_diff_trees(self.parent_tree, self.rev_tree, s, specific_files,
 
272
                        old_label='', new_label='',
 
273
                        # path_encoding=sys.getdefaultencoding()
 
274
                        # The default is utf-8, but we interpret the file
 
275
                        # contents as getdefaultencoding(), so we should
 
276
                        # probably try to make the paths in the same encoding.
 
277
                        )
 
278
        # str.decode(encoding, 'replace') doesn't do anything. Because if a
 
279
        # character is not valid in 'encoding' there is nothing to replace, the
 
280
        # 'replace' is for 'str.encode()'
 
281
        try:
 
282
            decoded = s.getvalue().decode(sys.getdefaultencoding())
 
283
        except UnicodeDecodeError:
 
284
            try:
 
285
                decoded = s.getvalue().decode('UTF-8')
 
286
            except UnicodeDecodeError:
 
287
                decoded = s.getvalue().decode('iso-8859-1')
 
288
                # This always works, because every byte has a valid
 
289
                # mapping from iso-8859-1 to Unicode
 
290
        # TextBuffer must contain pure UTF-8 data
 
291
        self.buffer.set_text(decoded.encode('UTF-8'))
 
292
 
 
293
 
 
294
class DiffWidget(gtk.HPaned):
 
295
    """Diff widget
 
296
 
 
297
    """
 
298
    def __init__(self):
 
299
        super(DiffWidget, self).__init__()
 
300
 
 
301
        # The file hierarchy: a scrollable treeview
 
302
        scrollwin = gtk.ScrolledWindow()
 
303
        scrollwin.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)
 
304
        scrollwin.set_shadow_type(gtk.SHADOW_IN)
 
305
        self.pack1(scrollwin)
 
306
        scrollwin.show()
 
307
 
 
308
        self.model = gtk.TreeStore(str, str)
 
309
        self.treeview = gtk.TreeView(self.model)
 
310
        self.treeview.set_headers_visible(False)
 
311
        self.treeview.set_search_column(1)
 
312
        self.treeview.connect("cursor-changed", self._treeview_cursor_cb)
 
313
        scrollwin.add(self.treeview)
 
314
        self.treeview.show()
 
315
 
 
316
        cell = gtk.CellRendererText()
 
317
        cell.set_property("width-chars", 20)
 
318
        column = gtk.TreeViewColumn()
 
319
        column.pack_start(cell, expand=True)
 
320
        column.add_attribute(cell, "text", 0)
 
321
        self.treeview.append_column(column)
 
322
 
 
323
    def set_diff_text(self, lines):
 
324
        """Set the current diff from a list of lines
 
325
 
 
326
        :param lines: The diff to show, in unified diff format
 
327
        """
 
328
        # The diffs of the  selected file: a scrollable source or
 
329
        # text view
 
330
 
 
331
    def set_diff_text_sections(self, sections):
 
332
        self.diff_view = DiffFileView()
 
333
        self.diff_view.show()
 
334
        self.pack2(self.diff_view)
 
335
        for oldname, newname, patch in sections:
 
336
            self.diff_view._diffs[newname] = str(patch)
 
337
            if newname is None:
 
338
                newname = ''
 
339
            self.model.append(None, [oldname, newname])
 
340
        self.diff_view.show_diff(None)
 
341
 
 
342
    def set_diff(self, rev_tree, parent_tree):
 
343
        """Set the differences showed by this window.
 
344
 
 
345
        Compares the two trees and populates the window with the
 
346
        differences.
 
347
        """
 
348
        self.diff_view = DiffView()
 
349
        self.pack2(self.diff_view)
 
350
        self.diff_view.show()
 
351
        self.diff_view.set_trees(rev_tree, parent_tree)
 
352
        self.rev_tree = rev_tree
 
353
        self.parent_tree = parent_tree
 
354
 
 
355
        self.model.clear()
 
356
        delta = self.rev_tree.changes_from(self.parent_tree)
 
357
 
 
358
        self.model.append(None, [ "Complete Diff", "" ])
 
359
 
 
360
        if len(delta.added):
 
361
            titer = self.model.append(None, [ "Added", None ])
 
362
            for path, id, kind in delta.added:
 
363
                self.model.append(titer, [ path, path ])
 
364
 
 
365
        if len(delta.removed):
 
366
            titer = self.model.append(None, [ "Removed", None ])
 
367
            for path, id, kind in delta.removed:
 
368
                self.model.append(titer, [ path, path ])
 
369
 
 
370
        if len(delta.renamed):
 
371
            titer = self.model.append(None, [ "Renamed", None ])
 
372
            for oldpath, newpath, id, kind, text_modified, meta_modified \
 
373
                    in delta.renamed:
 
374
                self.model.append(titer, [ oldpath, newpath ])
 
375
 
 
376
        if len(delta.modified):
 
377
            titer = self.model.append(None, [ "Modified", None ])
 
378
            for path, id, kind, text_modified, meta_modified in delta.modified:
 
379
                self.model.append(titer, [ path, path ])
 
380
 
 
381
        self.treeview.expand_all()
 
382
 
 
383
    def set_file(self, file_path):
 
384
        """Select the current file to display"""
 
385
        tv_path = None
 
386
        for data in self.model:
 
387
            for child in data.iterchildren():
 
388
                if child[0] == file_path or child[1] == file_path:
 
389
                    tv_path = child.path
 
390
                    break
 
391
        if tv_path is None:
 
392
            raise NoSuchFile(file_path)
 
393
        self.treeview.set_cursor(tv_path)
 
394
        self.treeview.scroll_to_cell(tv_path)
 
395
 
 
396
    def _treeview_cursor_cb(self, *args):
 
397
        """Callback for when the treeview cursor changes."""
 
398
        (path, col) = self.treeview.get_cursor()
 
399
        specific_files = [ self.model[path][1] ]
 
400
        if specific_files == [ None ]:
 
401
            return
 
402
        elif specific_files == [ "" ]:
 
403
            specific_files = None
 
404
 
 
405
        self.diff_view.show_diff(specific_files)
 
406
 
 
407
 
 
408
class DiffWindow(Window):
 
409
    """Diff window.
 
410
 
 
411
    This object represents and manages a single window containing the
 
412
    differences between two revisions on a branch.
 
413
    """
 
414
 
 
415
    def __init__(self, parent=None, operations=None):
 
416
        Window.__init__(self, parent)
 
417
        self.set_border_width(0)
 
418
        self.set_title("bzrk diff")
 
419
 
 
420
        # Use two thirds of the screen by default
 
421
        screen = self.get_screen()
 
422
        monitor = screen.get_monitor_geometry(0)
 
423
        width = int(monitor.width * 0.66)
 
424
        height = int(monitor.height * 0.66)
 
425
        self.set_default_size(width, height)
 
426
        self.construct(operations)
 
427
 
 
428
    def construct(self, operations):
 
429
        """Construct the window contents."""
 
430
        self.vbox = gtk.VBox()
 
431
        self.add(self.vbox)
 
432
        self.vbox.show()
 
433
        hbox = self._get_button_bar(operations)
 
434
        if hbox is not None:
 
435
            self.vbox.pack_start(hbox, expand=False, fill=True)
 
436
        self.diff = DiffWidget()
 
437
        self.vbox.add(self.diff)
 
438
        self.diff.show_all()
 
439
 
 
440
    def _get_button_bar(self, operations):
 
441
        """Return a button bar to use.
 
442
 
 
443
        :return: None, meaning that no button bar will be used.
 
444
        """
 
445
        if operations is None:
 
446
            return None
 
447
        hbox = gtk.HButtonBox()
 
448
        hbox.set_layout(gtk.BUTTONBOX_START)
 
449
        for title, method in operations:
 
450
            merge_button = gtk.Button(title)
 
451
            merge_button.show()
 
452
            merge_button.set_relief(gtk.RELIEF_NONE)
 
453
            merge_button.connect("clicked", method)
 
454
            hbox.pack_start(merge_button, expand=False, fill=True)
 
455
        hbox.show()
 
456
        return hbox
 
457
 
 
458
    def _get_merge_target(self):
 
459
        d = gtk.FileChooserDialog('Merge branch', self,
 
460
                                  gtk.FILE_CHOOSER_ACTION_SELECT_FOLDER,
 
461
                                  buttons=(gtk.STOCK_OK, gtk.RESPONSE_OK,
 
462
                                           gtk.STOCK_CANCEL,
 
463
                                           gtk.RESPONSE_CANCEL,))
 
464
        try:
 
465
            result = d.run()
 
466
            if result != gtk.RESPONSE_OK:
 
467
                raise SelectCancelled()
 
468
            return d.get_current_folder_uri()
 
469
        finally:
 
470
            d.destroy()
 
471
 
 
472
    def _merge_successful(self):
 
473
        # No conflicts found.
 
474
        info_dialog(_('Merge successful'),
 
475
                    _('All changes applied successfully.'))
 
476
 
 
477
    def _conflicts(self):
 
478
        warning_dialog(_('Conflicts encountered'),
 
479
                       _('Please resolve the conflicts manually'
 
480
                         ' before committing.'))
 
481
 
 
482
    def _handle_error(self, e):
 
483
        error_dialog('Error', str(e))
 
484
 
 
485
    def _get_save_path(self, basename):
 
486
        d = gtk.FileChooserDialog('Save As', self,
 
487
                                  gtk.FILE_CHOOSER_ACTION_SAVE,
 
488
                                  buttons=(gtk.STOCK_OK, gtk.RESPONSE_OK,
 
489
                                           gtk.STOCK_CANCEL,
 
490
                                           gtk.RESPONSE_CANCEL,))
 
491
        d.set_current_name(basename)
 
492
        try:
 
493
            result = d.run()
 
494
            if result != gtk.RESPONSE_OK:
 
495
                raise SelectCancelled()
 
496
            return urlutils.local_path_from_url(d.get_uri())
 
497
        finally:
 
498
            d.destroy()
 
499
 
 
500
    def set_diff(self, description, rev_tree, parent_tree):
 
501
        """Set the differences showed by this window.
 
502
 
 
503
        Compares the two trees and populates the window with the
 
504
        differences.
 
505
        """
 
506
        self.diff.set_diff(rev_tree, parent_tree)
 
507
        self.set_title(description + " - bzrk diff")
 
508
 
 
509
    def set_file(self, file_path):
 
510
        self.diff.set_file(file_path)
 
511
 
 
512
 
 
513
class DiffController(object):
 
514
 
 
515
    def __init__(self, path, patch, window=None):
 
516
        self.path = path
 
517
        self.patch = patch
 
518
        if window is None:
 
519
            window = DiffWindow(operations=self._provide_operations())
 
520
            self.initialize_window(window)
 
521
        self.window = window
 
522
 
 
523
    def initialize_window(self, window):
 
524
        window.diff.set_diff_text_sections(self.get_diff_sections())
 
525
        window.set_title(self.path + " - diff")
 
526
 
 
527
    def get_diff_sections(self):
 
528
        yield "Complete Diff", None, ''.join(self.patch)
 
529
        for patch in parse_patches(self.patch):
 
530
            oldname = patch.oldname.split('\t')[0]
 
531
            newname = patch.newname.split('\t')[0]
 
532
            yield oldname, newname, str(patch)
 
533
 
 
534
    def perform_save(self, window):
 
535
        try:
 
536
            save_path = self.window._get_save_path(osutils.basename(self.path))
 
537
        except SelectCancelled:
 
538
            return
 
539
        source = open(self.path, 'rb')
 
540
        try:
 
541
            target = open(save_path, 'wb')
 
542
            try:
 
543
                osutils.pumpfile(source, target)
 
544
            finally:
 
545
                target.close()
 
546
        finally:
 
547
            source.close()
 
548
 
 
549
    def _provide_operations(self):
 
550
        return [('Save', self.perform_save)]
 
551
 
 
552
 
 
553
class MergeDirectiveController(DiffController):
 
554
 
 
555
    def __init__(self, path, directive, window=None):
 
556
        DiffController.__init__(self, path, directive.patch.splitlines(True),
 
557
                                window)
 
558
        self.directive = directive
 
559
        self.merge_target = None
 
560
 
 
561
    def _provide_operations(self):
 
562
        return [('Merge', self.perform_merge), ('Save', self.perform_save)]
 
563
 
 
564
    def perform_merge(self, window):
 
565
        if self.merge_target is None:
 
566
            try:
 
567
                self.merge_target = self.window._get_merge_target()
 
568
            except SelectCancelled:
 
569
                return
 
570
        tree = workingtree.WorkingTree.open(self.merge_target)
 
571
        tree.lock_write()
 
572
        try:
 
573
            try:
 
574
                merger, verified = _mod_merge.Merger.from_mergeable(tree,
 
575
                    self.directive, progress.DummyProgress())
 
576
                merger.check_basis(True)
 
577
                merger.merge_type = _mod_merge.Merge3Merger
 
578
                conflict_count = merger.do_merge()
 
579
                merger.set_pending()
 
580
                if conflict_count == 0:
 
581
                    self.window._merge_successful()
 
582
                else:
 
583
                    self.window._conflicts()
 
584
                    # There are conflicts to be resolved.
 
585
                self.window.destroy()
 
586
            except Exception, e:
 
587
                self.window._handle_error(e)
 
588
        finally:
 
589
            tree.unlock()
 
590
 
 
591
 
 
592
def iter_changes_to_status(source, target):
 
593
    """Determine the differences between trees.
 
594
 
 
595
    This is a wrapper around iter_changes which just yields more
 
596
    understandable results.
 
597
 
 
598
    :param source: The source tree (basis tree)
 
599
    :param target: The target tree
 
600
    :return: A list of (file_id, real_path, change_type, display_path)
 
601
    """
 
602
    added = 'added'
 
603
    removed = 'removed'
 
604
    renamed = 'renamed'
 
605
    renamed_and_modified = 'renamed and modified'
 
606
    modified = 'modified'
 
607
    kind_changed = 'kind changed'
 
608
 
 
609
    # TODO: Handle metadata changes
 
610
 
 
611
    status = []
 
612
    target.lock_read()
 
613
    try:
 
614
        source.lock_read()
 
615
        try:
 
616
            for (file_id, paths, changed_content, versioned, parent_ids, names,
 
617
                 kinds, executables) in target.iter_changes(source):
 
618
 
 
619
                # Skip the root entry if it isn't very interesting
 
620
                if parent_ids == (None, None):
 
621
                    continue
 
622
 
 
623
                change_type = None
 
624
                if kinds[0] is None:
 
625
                    source_marker = ''
 
626
                else:
 
627
                    source_marker = osutils.kind_marker(kinds[0])
 
628
                if kinds[1] is None:
 
629
                    assert kinds[0] is not None
 
630
                    marker = osutils.kind_marker(kinds[0])
 
631
                else:
 
632
                    marker = osutils.kind_marker(kinds[1])
 
633
 
 
634
                real_path = paths[1]
 
635
                if real_path is None:
 
636
                    real_path = paths[0]
 
637
                assert real_path is not None
 
638
                display_path = real_path + marker
 
639
 
 
640
                present_source = versioned[0] and kinds[0] is not None
 
641
                present_target = versioned[1] and kinds[1] is not None
 
642
 
 
643
                if present_source != present_target:
 
644
                    if present_target:
 
645
                        change_type = added
 
646
                    else:
 
647
                        assert present_source
 
648
                        change_type = removed
 
649
                elif names[0] != names[1] or parent_ids[0] != parent_ids[1]:
 
650
                    # Renamed
 
651
                    if changed_content or executables[0] != executables[1]:
 
652
                        # and modified
 
653
                        change_type = renamed_and_modified
 
654
                    else:
 
655
                        change_type = renamed
 
656
                    display_path = (paths[0] + source_marker
 
657
                                    + ' => ' + paths[1] + marker)
 
658
                elif kinds[0] != kinds[1]:
 
659
                    change_type = kind_changed
 
660
                    display_path = (paths[0] + source_marker
 
661
                                    + ' => ' + paths[1] + marker)
 
662
                elif changed_content is True or executables[0] != executables[1]:
 
663
                    change_type = modified
 
664
                else:
 
665
                    assert False, "How did we get here?"
 
666
 
 
667
                status.append((file_id, real_path, change_type, display_path))
 
668
        finally:
 
669
            source.unlock()
 
670
    finally:
 
671
        target.unlock()
 
672
 
 
673
    return status