/b-gtk/fix-viz

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  • Committer: Daniel Schierbeck
  • Date: 2007-10-14 15:54:57 UTC
  • mto: This revision was merged to the branch mainline in revision 317.
  • Revision ID: daniel.schierbeck@gmail.com-20071014155457-m3ek29p4ima8ev7d
Added the new Window base class.

Show diffs side-by-side

added added

removed removed

Lines of Context:
 
1
# -*- coding: UTF-8 -*-
1
2
"""Difference window.
2
3
 
3
4
This module contains the code to manage the diff window which shows
4
5
the changes made between two revisions on a branch.
5
6
"""
6
7
 
7
 
__copyright__ = "Copyright 2005 Canonical Ltd."
 
8
__copyright__ = "Copyright © 2005 Canonical Ltd."
8
9
__author__    = "Scott James Remnant <scott@ubuntu.com>"
9
10
 
10
11
 
17
18
import os
18
19
import re
19
20
import sys
20
 
import inspect
21
 
try:
22
 
    from xml.etree.ElementTree import Element, SubElement, tostring
23
 
except ImportError:
24
 
    from elementtree.ElementTree import Element, SubElement, tostring
25
21
 
26
22
try:
27
 
    import gtksourceview2
 
23
    import gtksourceview
28
24
    have_gtksourceview = True
29
25
except ImportError:
30
26
    have_gtksourceview = False
34
30
except ImportError:
35
31
    have_gconf = False
36
32
 
37
 
from bzrlib import (
38
 
    errors,
39
 
    merge as _mod_merge,
40
 
    osutils,
41
 
    urlutils,
42
 
    workingtree,
43
 
)
 
33
import bzrlib
 
34
 
44
35
from bzrlib.diff import show_diff_trees
45
 
from bzrlib.patches import parse_patches
 
36
from bzrlib.errors import NoSuchFile
46
37
from bzrlib.trace import warning
47
 
from bzrlib.plugins.gtk.dialog import (
48
 
    error_dialog,
49
 
    info_dialog,
50
 
    warning_dialog,
51
 
    )
52
 
from bzrlib.plugins.gtk.i18n import _i18n
53
38
from bzrlib.plugins.gtk.window import Window
54
39
 
55
 
 
56
 
def fallback_guess_language(slm, content_type):
57
 
    for lang_id in slm.get_language_ids():
58
 
        lang = slm.get_language(lang_id)
59
 
        if "text/x-patch" in lang.get_mime_types():
60
 
            return lang
61
 
    return None
62
 
 
63
 
 
64
 
class SelectCancelled(Exception):
65
 
 
66
 
    pass
67
 
 
68
 
 
69
 
class DiffFileView(gtk.ScrolledWindow):
70
 
    """Window for displaying diffs from a diff file"""
71
 
 
72
 
    def __init__(self):
73
 
        gtk.ScrolledWindow.__init__(self)
 
40
class DiffWindow(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
    """
 
46
 
 
47
    def __init__(self, parent=None):
 
48
        Window.__init__(self, parent)
 
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
 
74
59
        self.construct()
75
 
        self._diffs = {}
76
60
 
77
61
    def construct(self):
78
 
        self.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
79
 
        self.set_shadow_type(gtk.SHADOW_IN)
80
 
 
81
 
        if have_gtksourceview:
82
 
            self.buffer = gtksourceview2.Buffer()
83
 
            slm = gtksourceview2.LanguageManager()
84
 
            guess_language = getattr(gtksourceview2.LanguageManager, 
85
 
                "guess_language", fallback_guess_language)
86
 
            gsl = guess_language(slm, content_type="text/x-patch")
87
 
            if have_gconf:
88
 
                self.apply_gedit_colors(self.buffer)
89
 
            self.apply_colordiff_colors(self.buffer)
90
 
            self.buffer.set_language(gsl)
91
 
            self.buffer.set_highlight_syntax(True)
92
 
 
93
 
            self.sourceview = gtksourceview2.View(self.buffer)
94
 
        else:
95
 
            self.buffer = gtk.TextBuffer()
96
 
            self.sourceview = gtk.TextView(self.buffer)
97
 
 
98
 
        self.sourceview.set_editable(False)
99
 
        self.sourceview.modify_font(pango.FontDescription("Monospace"))
100
 
        self.add(self.sourceview)
101
 
        self.sourceview.show()
102
 
 
103
 
    @staticmethod
104
 
    def apply_gedit_colors(buf):
105
 
        """Set style to that specified in gedit configuration.
106
 
 
107
 
        This method needs the gconf module.
108
 
 
109
 
        :param buf: a gtksourceview2.Buffer object.
110
 
        """
111
 
        GEDIT_SCHEME_PATH = '/apps/gedit-2/preferences/editor/colors/scheme'
112
 
        GEDIT_USER_STYLES_PATH = os.path.expanduser('~/.gnome2/gedit/styles')
113
 
 
114
 
        client = gconf.client_get_default()
115
 
        style_scheme_name = client.get_string(GEDIT_SCHEME_PATH)
116
 
        if style_scheme_name is not None:
117
 
            style_scheme_mgr = gtksourceview2.StyleSchemeManager()
118
 
            style_scheme_mgr.append_search_path(GEDIT_USER_STYLES_PATH)
119
 
            
120
 
            style_scheme = style_scheme_mgr.get_scheme(style_scheme_name)
121
 
            
122
 
            if style_scheme is not None:
123
 
                buf.set_style_scheme(style_scheme)
124
 
 
125
 
    @classmethod
126
 
    def apply_colordiff_colors(klass, buf):
127
 
        """Set style colors for lang using the colordiff configuration file.
128
 
 
129
 
        Both ~/.colordiffrc and ~/.colordiffrc.bzr-gtk are read.
130
 
 
131
 
        :param buf: a "Diff" gtksourceview2.Buffer object.
132
 
        """
133
 
        scheme_manager = gtksourceview2.StyleSchemeManager()
134
 
        style_scheme = scheme_manager.get_scheme('colordiff')
135
 
        
136
 
        # if style scheme not found, we'll generate it from colordiffrc
137
 
        # TODO: reload if colordiffrc has changed.
138
 
        if style_scheme is None:
139
 
            colors = {}
140
 
 
141
 
            for f in ('~/.colordiffrc', '~/.colordiffrc.bzr-gtk'):
142
 
                f = os.path.expanduser(f)
143
 
                if os.path.exists(f):
144
 
                    try:
145
 
                        f = file(f)
146
 
                    except IOError, e:
147
 
                        warning('could not open file %s: %s' % (f, str(e)))
148
 
                    else:
149
 
                        colors.update(klass.parse_colordiffrc(f))
150
 
                        f.close()
151
 
 
152
 
            if not colors:
153
 
                # ~/.colordiffrc does not exist
154
 
                return
155
 
            
156
 
            mapping = {
157
 
                # map GtkSourceView2 scheme styles to colordiff names
158
 
                # since GSV is richer, accept new names for extra bits,
159
 
                # defaulting to old names if they're not present
160
 
                'diff:added-line': ['newtext'],
161
 
                'diff:removed-line': ['oldtext'],
162
 
                'diff:location': ['location', 'diffstuff'],
163
 
                'diff:file': ['file', 'diffstuff'],
164
 
                'diff:special-case': ['specialcase', 'diffstuff'],
165
 
            }
166
 
            
167
 
            converted_colors = {}
168
 
            for name, values in mapping.items():
169
 
                color = None
170
 
                for value in values:
171
 
                    color = colors.get(value, None)
172
 
                    if color is not None:
173
 
                        break
174
 
                if color is None:
175
 
                    continue
176
 
                converted_colors[name] = color
177
 
            
178
 
            # some xml magic to produce needed style scheme description
179
 
            e_style_scheme = Element('style-scheme')
180
 
            e_style_scheme.set('id', 'colordiff')
181
 
            e_style_scheme.set('_name', 'ColorDiff')
182
 
            e_style_scheme.set('version', '1.0')
183
 
            for name, color in converted_colors.items():
184
 
                style = SubElement(e_style_scheme, 'style')
185
 
                style.set('name', name)
186
 
                style.set('foreground', '#%s' % color)
187
 
            
188
 
            scheme_xml = tostring(e_style_scheme, 'UTF-8')
189
 
            if not os.path.exists(os.path.expanduser('~/.local/share/gtksourceview-2.0/styles')):
190
 
                os.makedirs(os.path.expanduser('~/.local/share/gtksourceview-2.0/styles'))
191
 
            file(os.path.expanduser('~/.local/share/gtksourceview-2.0/styles/colordiff.xml'), 'w').write(scheme_xml)
192
 
            
193
 
            scheme_manager.force_rescan()
194
 
            style_scheme = scheme_manager.get_scheme('colordiff')
195
 
        
196
 
        buf.set_style_scheme(style_scheme)
197
 
 
198
 
    @staticmethod
199
 
    def parse_colordiffrc(fileobj):
200
 
        """Parse fileobj as a colordiff configuration file.
201
 
 
202
 
        :return: A dict with the key -> value pairs.
203
 
        """
204
 
        colors = {}
205
 
        for line in fileobj:
206
 
            if re.match(r'^\s*#', line):
207
 
                continue
208
 
            if '=' not in line:
209
 
                continue
210
 
            key, val = line.split('=', 1)
211
 
            colors[key.strip()] = val.strip()
212
 
        return colors
213
 
 
214
 
    def set_trees(self, rev_tree, parent_tree):
215
 
        self.rev_tree = rev_tree
216
 
        self.parent_tree = parent_tree
217
 
#        self._build_delta()
218
 
 
219
 
#    def _build_delta(self):
220
 
#        self.parent_tree.lock_read()
221
 
#        self.rev_tree.lock_read()
222
 
#        try:
223
 
#            self.delta = iter_changes_to_status(self.parent_tree, self.rev_tree)
224
 
#            self.path_to_status = {}
225
 
#            self.path_to_diff = {}
226
 
#            source_inv = self.parent_tree.inventory
227
 
#            target_inv = self.rev_tree.inventory
228
 
#            for (file_id, real_path, change_type, display_path) in self.delta:
229
 
#                self.path_to_status[real_path] = u'=== %s %s' % (change_type, display_path)
230
 
#                if change_type in ('modified', 'renamed and modified'):
231
 
#                    source_ie = source_inv[file_id]
232
 
#                    target_ie = target_inv[file_id]
233
 
#                    sio = StringIO()
234
 
#                    source_ie.diff(internal_diff, *old path, *old_tree,
235
 
#                                   *new_path, target_ie, self.rev_tree,
236
 
#                                   sio)
237
 
#                    self.path_to_diff[real_path] = 
238
 
#
239
 
#        finally:
240
 
#            self.rev_tree.unlock()
241
 
#            self.parent_tree.unlock()
242
 
 
243
 
    def show_diff(self, specific_files):
244
 
        sections = []
245
 
        if specific_files is None:
246
 
            self.buffer.set_text(self._diffs[None])
247
 
        else:
248
 
            for specific_file in specific_files:
249
 
                sections.append(self._diffs[specific_file])
250
 
            self.buffer.set_text(''.join(sections))
251
 
 
252
 
 
253
 
class DiffView(DiffFileView):
254
 
    """This is the soft and chewy filling for a DiffWindow."""
255
 
 
256
 
    def __init__(self):
257
 
        DiffFileView.__init__(self)
258
 
        self.rev_tree = None
259
 
        self.parent_tree = None
260
 
 
261
 
    def show_diff(self, specific_files):
262
 
        """Show the diff for the specified files"""
263
 
        s = StringIO()
264
 
        show_diff_trees(self.parent_tree, self.rev_tree, s, specific_files,
265
 
                        old_label='', new_label='',
266
 
                        # path_encoding=sys.getdefaultencoding()
267
 
                        # The default is utf-8, but we interpret the file
268
 
                        # contents as getdefaultencoding(), so we should
269
 
                        # probably try to make the paths in the same encoding.
270
 
                        )
271
 
        # str.decode(encoding, 'replace') doesn't do anything. Because if a
272
 
        # character is not valid in 'encoding' there is nothing to replace, the
273
 
        # 'replace' is for 'str.encode()'
274
 
        try:
275
 
            decoded = s.getvalue().decode(sys.getdefaultencoding())
276
 
        except UnicodeDecodeError:
277
 
            try:
278
 
                decoded = s.getvalue().decode('UTF-8')
279
 
            except UnicodeDecodeError:
280
 
                decoded = s.getvalue().decode('iso-8859-1')
281
 
                # This always works, because every byte has a valid
282
 
                # mapping from iso-8859-1 to Unicode
283
 
        # TextBuffer must contain pure UTF-8 data
284
 
        self.buffer.set_text(decoded.encode('UTF-8'))
285
 
 
286
 
 
287
 
class DiffWidget(gtk.HPaned):
288
 
    """Diff widget
289
 
 
290
 
    """
291
 
    def __init__(self):
292
 
        super(DiffWidget, self).__init__()
 
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()
293
69
 
294
70
        # The file hierarchy: a scrollable treeview
295
71
        scrollwin = gtk.ScrolledWindow()
296
72
        scrollwin.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)
297
73
        scrollwin.set_shadow_type(gtk.SHADOW_IN)
298
 
        self.pack1(scrollwin)
 
74
        pane.pack1(scrollwin)
299
75
        scrollwin.show()
300
 
        
 
76
 
301
77
        self.model = gtk.TreeStore(str, str)
302
78
        self.treeview = gtk.TreeView(self.model)
303
79
        self.treeview.set_headers_visible(False)
313
89
        column.add_attribute(cell, "text", 0)
314
90
        self.treeview.append_column(column)
315
91
 
316
 
    def set_diff_text(self, lines):
317
 
        """Set the current diff from a list of lines
318
 
 
319
 
        :param lines: The diff to show, in unified diff format
320
 
        """
321
92
        # The diffs of the  selected file: a scrollable source or
322
93
        # text view
323
 
 
324
 
    def set_diff_text_sections(self, sections):
325
 
        if getattr(self, 'diff_view', None) is None:
326
 
            self.diff_view = DiffFileView()
327
 
            self.pack2(self.diff_view)
328
 
        self.diff_view.show()
329
 
        for oldname, newname, patch in sections:
330
 
            self.diff_view._diffs[newname] = str(patch)
331
 
            if newname is None:
332
 
                newname = ''
333
 
            self.model.append(None, [oldname, newname])
334
 
        self.diff_view.show_diff(None)
335
 
 
336
 
    def set_diff(self, rev_tree, parent_tree):
 
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()
 
99
 
 
100
        if have_gtksourceview:
 
101
            self.buffer = gtksourceview.SourceBuffer()
 
102
            slm = gtksourceview.SourceLanguagesManager()
 
103
            gsl = slm.get_language_from_mime_type("text/x-patch")
 
104
            if have_gconf:
 
105
                self.apply_gedit_colors(gsl)
 
106
            self.apply_colordiff_colors(gsl)
 
107
            self.buffer.set_language(gsl)
 
108
            self.buffer.set_highlight(True)
 
109
 
 
110
            sourceview = gtksourceview.SourceView(self.buffer)
 
111
        else:
 
112
            self.buffer = gtk.TextBuffer()
 
113
            sourceview = gtk.TextView(self.buffer)
 
114
 
 
115
        sourceview.set_editable(False)
 
116
        sourceview.modify_font(pango.FontDescription("Monospace"))
 
117
        scrollwin.add(sourceview)
 
118
        sourceview.show()
 
119
 
 
120
    def set_diff(self, description, rev_tree, parent_tree):
337
121
        """Set the differences showed by this window.
338
122
 
339
123
        Compares the two trees and populates the window with the
340
124
        differences.
341
125
        """
342
 
        if getattr(self, 'diff_view', None) is None:
343
 
            self.diff_view = DiffView()
344
 
            self.pack2(self.diff_view)
345
 
        self.diff_view.show()
346
 
        self.diff_view.set_trees(rev_tree, parent_tree)
347
126
        self.rev_tree = rev_tree
348
127
        self.parent_tree = parent_tree
349
128
 
374
153
                self.model.append(titer, [ path, path ])
375
154
 
376
155
        self.treeview.expand_all()
377
 
        self.diff_view.show_diff(None)
 
156
        self.set_title(description + " - bzrk diff")
378
157
 
379
158
    def set_file(self, file_path):
380
 
        """Select the current file to display"""
381
159
        tv_path = None
382
160
        for data in self.model:
383
161
            for child in data.iterchildren():
385
163
                    tv_path = child.path
386
164
                    break
387
165
        if tv_path is None:
388
 
            raise errors.NoSuchFile(file_path)
 
166
            raise NoSuchFile(file_path)
389
167
        self.treeview.set_cursor(tv_path)
390
168
        self.treeview.scroll_to_cell(tv_path)
391
169
 
397
175
            return
398
176
        elif specific_files == [ "" ]:
399
177
            specific_files = None
400
 
        
401
 
        self.diff_view.show_diff(specific_files)
402
 
    
403
 
    def _on_wraplines_toggled(self, widget=None, wrap=False):
404
 
        """Callback for when the wrap lines checkbutton is toggled"""
405
 
        if wrap or widget.get_active():
406
 
            self.diff_view.sourceview.set_wrap_mode(gtk.WRAP_WORD)
407
 
        else:
408
 
            self.diff_view.sourceview.set_wrap_mode(gtk.WRAP_NONE)
409
 
 
410
 
class DiffWindow(Window):
411
 
    """Diff window.
412
 
 
413
 
    This object represents and manages a single window containing the
414
 
    differences between two revisions on a branch.
415
 
    """
416
 
 
417
 
    def __init__(self, parent=None, operations=None):
418
 
        Window.__init__(self, parent)
419
 
        self.set_border_width(0)
420
 
        self.set_title("bzrk diff")
421
 
 
422
 
        # Use two thirds of the screen by default
423
 
        screen = self.get_screen()
424
 
        monitor = screen.get_monitor_geometry(0)
425
 
        width = int(monitor.width * 0.66)
426
 
        height = int(monitor.height * 0.66)
427
 
        self.set_default_size(width, height)
428
 
        self.construct(operations)
429
 
 
430
 
    def construct(self, operations):
431
 
        """Construct the window contents."""
432
 
        self.vbox = gtk.VBox()
433
 
        self.add(self.vbox)
434
 
        self.vbox.show()
435
 
        self.diff = DiffWidget()
436
 
        self.vbox.pack_end(self.diff, True, True, 0)
437
 
        self.diff.show_all()
438
 
        # Build after DiffWidget to connect signals
439
 
        menubar = self._get_menu_bar()
440
 
        self.vbox.pack_start(menubar, False, False, 0)
441
 
        hbox = self._get_button_bar(operations)
442
 
        if hbox is not None:
443
 
            self.vbox.pack_start(hbox, False, True, 0)
444
 
        
445
 
    
446
 
    def _get_menu_bar(self):
447
 
        menubar = gtk.MenuBar()
448
 
        # View menu
449
 
        mb_view = gtk.MenuItem(_i18n("_View"))
450
 
        mb_view_menu = gtk.Menu()
451
 
        mb_view_wrapsource = gtk.CheckMenuItem(_i18n("Wrap _Long Lines"))
452
 
        mb_view_wrapsource.connect('activate', self.diff._on_wraplines_toggled)
453
 
        mb_view_wrapsource.show()
454
 
        mb_view_menu.append(mb_view_wrapsource)
455
 
        mb_view.show()
456
 
        mb_view.set_submenu(mb_view_menu)
457
 
        mb_view.show()
458
 
        menubar.append(mb_view)
459
 
        menubar.show()
460
 
        return menubar
461
 
    
462
 
    def _get_button_bar(self, operations):
463
 
        """Return a button bar to use.
464
 
 
465
 
        :return: None, meaning that no button bar will be used.
466
 
        """
467
 
        if operations is None:
468
 
            return None
469
 
        hbox = gtk.HButtonBox()
470
 
        hbox.set_layout(gtk.BUTTONBOX_START)
471
 
        for title, method in operations:
472
 
            merge_button = gtk.Button(title)
473
 
            merge_button.show()
474
 
            merge_button.set_relief(gtk.RELIEF_NONE)
475
 
            merge_button.connect("clicked", method)
476
 
            hbox.pack_start(merge_button, expand=False, fill=True)
477
 
        hbox.show()
478
 
        return hbox
479
 
 
480
 
    def _get_merge_target(self):
481
 
        d = gtk.FileChooserDialog('Merge branch', self,
482
 
                                  gtk.FILE_CHOOSER_ACTION_SELECT_FOLDER,
483
 
                                  buttons=(gtk.STOCK_OK, gtk.RESPONSE_OK,
484
 
                                           gtk.STOCK_CANCEL,
485
 
                                           gtk.RESPONSE_CANCEL,))
486
 
        try:
487
 
            result = d.run()
488
 
            if result != gtk.RESPONSE_OK:
489
 
                raise SelectCancelled()
490
 
            return d.get_current_folder_uri()
491
 
        finally:
492
 
            d.destroy()
493
 
 
494
 
    def _merge_successful(self):
495
 
        # No conflicts found.
496
 
        info_dialog(_i18n('Merge successful'),
497
 
                    _i18n('All changes applied successfully.'))
498
 
 
499
 
    def _conflicts(self):
500
 
        warning_dialog(_i18n('Conflicts encountered'),
501
 
                       _i18n('Please resolve the conflicts manually'
502
 
                             ' before committing.'))
503
 
 
504
 
    def _handle_error(self, e):
505
 
        error_dialog('Error', str(e))
506
 
 
507
 
    def _get_save_path(self, basename):
508
 
        d = gtk.FileChooserDialog('Save As', self,
509
 
                                  gtk.FILE_CHOOSER_ACTION_SAVE,
510
 
                                  buttons=(gtk.STOCK_OK, gtk.RESPONSE_OK,
511
 
                                           gtk.STOCK_CANCEL,
512
 
                                           gtk.RESPONSE_CANCEL,))
513
 
        d.set_current_name(basename)
514
 
        try:
515
 
            result = d.run()
516
 
            if result != gtk.RESPONSE_OK:
517
 
                raise SelectCancelled()
518
 
            return urlutils.local_path_from_url(d.get_uri())
519
 
        finally:
520
 
            d.destroy()
521
 
 
522
 
    def set_diff(self, description, rev_tree, parent_tree):
523
 
        """Set the differences showed by this window.
524
 
 
525
 
        Compares the two trees and populates the window with the
526
 
        differences.
527
 
        """
528
 
        self.diff.set_diff(rev_tree, parent_tree)
529
 
        self.set_title(description + " - bzrk diff")
530
 
 
531
 
    def set_file(self, file_path):
532
 
        self.diff.set_file(file_path)
533
 
 
534
 
 
535
 
class DiffController(object):
536
 
 
537
 
    def __init__(self, path, patch, window=None, allow_dirty=False):
538
 
        self.path = path
539
 
        self.patch = patch
540
 
        self.allow_dirty = allow_dirty
541
 
        if window is None:
542
 
            window = DiffWindow(operations=self._provide_operations())
543
 
            self.initialize_window(window)
544
 
        self.window = window
545
 
 
546
 
    def initialize_window(self, window):
547
 
        window.diff.set_diff_text_sections(self.get_diff_sections())
548
 
        window.set_title(self.path + " - diff")
549
 
 
550
 
    def get_diff_sections(self):
551
 
        yield "Complete Diff", None, ''.join(self.patch)
552
 
        # allow_dirty was added to parse_patches in bzrlib 2.2b1
553
 
        if 'allow_dirty' in inspect.getargspec(parse_patches).args:
554
 
            patches = parse_patches(self.patch, allow_dirty=self.allow_dirty)
555
 
        else:
556
 
            patches = parse_patches(self.patch)
557
 
        for patch in patches:
558
 
            oldname = patch.oldname.split('\t')[0]
559
 
            newname = patch.newname.split('\t')[0]
560
 
            yield oldname, newname, str(patch)
561
 
 
562
 
    def perform_save(self, window):
563
 
        try:
564
 
            save_path = self.window._get_save_path(osutils.basename(self.path))
565
 
        except SelectCancelled:
 
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
    @staticmethod
 
184
    def apply_gedit_colors(lang):
 
185
        """Set style for lang to that specified in gedit configuration.
 
186
 
 
187
        This method needs the gconf module.
 
188
        
 
189
        :param lang: a gtksourceview.SourceLanguage object.
 
190
        """
 
191
        GEDIT_SYNTAX_PATH = '/apps/gedit-2/preferences/syntax_highlighting'
 
192
        GEDIT_LANG_PATH = GEDIT_SYNTAX_PATH + '/' + lang.get_id()
 
193
 
 
194
        client = gconf.client_get_default()
 
195
        client.add_dir(GEDIT_LANG_PATH, gconf.CLIENT_PRELOAD_NONE)
 
196
 
 
197
        for tag in lang.get_tags():
 
198
            tag_id = tag.get_id()
 
199
            gconf_key = GEDIT_LANG_PATH + '/' + tag_id
 
200
            style_string = client.get_string(gconf_key)
 
201
 
 
202
            if style_string is None:
 
203
                continue
 
204
 
 
205
            # function to get a bool from a string that's either '0' or '1'
 
206
            string_bool = lambda x: bool(int(x))
 
207
 
 
208
            # style_string is a string like "2/#FFCCAA/#000000/0/1/0/0"
 
209
            # values are: mask, fg, bg, italic, bold, underline, strike
 
210
            # this packs them into (str_value, attr_name, conv_func) tuples
 
211
            items = zip(style_string.split('/'), ['mask', 'foreground',
 
212
                'background', 'italic', 'bold', 'underline', 'strikethrough' ],
 
213
                [ int, gtk.gdk.color_parse, gtk.gdk.color_parse, string_bool,
 
214
                    string_bool, string_bool, string_bool ]
 
215
            )
 
216
 
 
217
            style = gtksourceview.SourceTagStyle()
 
218
 
 
219
            # XXX The mask attribute controls whether the present values of
 
220
            # foreground and background color should in fact be used. Ideally
 
221
            # (and that's what gedit does), one could set all three attributes,
 
222
            # and let the TagStyle object figure out which colors to use.
 
223
            # However, in the GtkSourceview python bindings, the mask attribute
 
224
            # is read-only, and it's derived instead from the colors being
 
225
            # set or not. This means that we have to sometimes refrain from
 
226
            # setting fg or bg colors, depending on the value of the mask.
 
227
            # This code could go away if mask were writable.
 
228
            mask = int(items[0][0])
 
229
            if not (mask & 1): # GTK_SOURCE_TAG_STYLE_USE_BACKGROUND
 
230
                items[2:3] = []
 
231
            if not (mask & 2): # GTK_SOURCE_TAG_STYLE_USE_FOREGROUND
 
232
                items[1:2] = []
 
233
            items[0:1] = [] # skip the mask unconditionally
 
234
 
 
235
            for value, attr, func in items:
 
236
                try:
 
237
                    value = func(value)
 
238
                except ValueError:
 
239
                    warning('gconf key %s contains an invalid value: %s'
 
240
                            % gconf_key, value)
 
241
                else:
 
242
                    setattr(style, attr, value)
 
243
 
 
244
            lang.set_tag_style(tag_id, style)
 
245
 
 
246
    @staticmethod
 
247
    def apply_colordiff_colors(lang):
 
248
        """Set style colors for lang using the colordiff configuration file.
 
249
 
 
250
        Both ~/.colordiffrc and ~/.colordiffrc.bzr-gtk are read.
 
251
 
 
252
        :param lang: a "Diff" gtksourceview.SourceLanguage object.
 
253
        """
 
254
        colors = {}
 
255
 
 
256
        for f in ('~/.colordiffrc', '~/.colordiffrc.bzr-gtk'):
 
257
            f = os.path.expanduser(f)
 
258
            if os.path.exists(f):
 
259
                try:
 
260
                    f = file(f)
 
261
                except IOError, e:
 
262
                    warning('could not open file %s: %s' % (f, str(e)))
 
263
                else:
 
264
                    colors.update(DiffWindow.parse_colordiffrc(f))
 
265
                    f.close()
 
266
 
 
267
        if not colors:
 
268
            # ~/.colordiffrc does not exist
566
269
            return
567
 
        source = open(self.path, 'rb')
568
 
        try:
569
 
            target = open(save_path, 'wb')
570
 
            try:
571
 
                osutils.pumpfile(source, target)
572
 
            finally:
573
 
                target.close()
574
 
        finally:
575
 
            source.close()
576
 
 
577
 
    def _provide_operations(self):
578
 
        return [('Save', self.perform_save)]
579
 
 
580
 
 
581
 
class MergeDirectiveController(DiffController):
582
 
 
583
 
    def __init__(self, path, directive, window=None):
584
 
        DiffController.__init__(self, path, directive.patch.splitlines(True),
585
 
                                window)
586
 
        self.directive = directive
587
 
        self.merge_target = None
588
 
 
589
 
    def _provide_operations(self):
590
 
        return [('Merge', self.perform_merge), ('Save', self.perform_save)]
591
 
 
592
 
    def perform_merge(self, window):
593
 
        if self.merge_target is None:
594
 
            try:
595
 
                self.merge_target = self.window._get_merge_target()
596
 
            except SelectCancelled:
597
 
                return
598
 
        tree = workingtree.WorkingTree.open(self.merge_target)
599
 
        tree.lock_write()
600
 
        try:
601
 
            try:
602
 
                if tree.has_changes():
603
 
                    raise errors.UncommittedChanges(tree)
604
 
                merger, verified = _mod_merge.Merger.from_mergeable(
605
 
                    tree, self.directive, pb=None)
606
 
                merger.merge_type = _mod_merge.Merge3Merger
607
 
                conflict_count = merger.do_merge()
608
 
                merger.set_pending()
609
 
                if conflict_count == 0:
610
 
                    self.window._merge_successful()
611
 
                else:
612
 
                    self.window._conflicts()
613
 
                    # There are conflicts to be resolved.
614
 
                self.window.destroy()
615
 
            except Exception, e:
616
 
                self.window._handle_error(e)
617
 
        finally:
618
 
            tree.unlock()
619
 
 
620
 
 
621
 
def iter_changes_to_status(source, target):
622
 
    """Determine the differences between trees.
623
 
 
624
 
    This is a wrapper around iter_changes which just yields more
625
 
    understandable results.
626
 
 
627
 
    :param source: The source tree (basis tree)
628
 
    :param target: The target tree
629
 
    :return: A list of (file_id, real_path, change_type, display_path)
630
 
    """
631
 
    added = 'added'
632
 
    removed = 'removed'
633
 
    renamed = 'renamed'
634
 
    renamed_and_modified = 'renamed and modified'
635
 
    modified = 'modified'
636
 
    kind_changed = 'kind changed'
637
 
    missing = 'missing'
638
 
 
639
 
    # TODO: Handle metadata changes
640
 
 
641
 
    status = []
642
 
    target.lock_read()
643
 
    try:
644
 
        source.lock_read()
645
 
        try:
646
 
            for (file_id, paths, changed_content, versioned, parent_ids, names,
647
 
                 kinds, executables) in target.iter_changes(source):
648
 
 
649
 
                # Skip the root entry if it isn't very interesting
650
 
                if parent_ids == (None, None):
651
 
                    continue
652
 
 
653
 
                change_type = None
654
 
                if kinds[0] is None:
655
 
                    source_marker = ''
656
 
                else:
657
 
                    source_marker = osutils.kind_marker(kinds[0])
658
 
 
659
 
                if kinds[1] is None:
660
 
                    if kinds[0] is None:
661
 
                        # We assume bzr will flag only files in that case,
662
 
                        # there may be a bzr bug there as only files seems to
663
 
                        # not receive any kind.
664
 
                        marker = osutils.kind_marker('file')
665
 
                    else:
666
 
                        marker = osutils.kind_marker(kinds[0])
667
 
                else:
668
 
                    marker = osutils.kind_marker(kinds[1])
669
 
 
670
 
                real_path = paths[1]
671
 
                if real_path is None:
672
 
                    real_path = paths[0]
673
 
                assert real_path is not None
674
 
 
675
 
                present_source = versioned[0] and kinds[0] is not None
676
 
                present_target = versioned[1] and kinds[1] is not None
677
 
 
678
 
                if kinds[0] is None and kinds[1] is None:
679
 
                    change_type = missing
680
 
                    display_path = real_path + marker
681
 
                elif present_source != present_target:
682
 
                    if present_target:
683
 
                        change_type = added
684
 
                    else:
685
 
                        assert present_source
686
 
                        change_type = removed
687
 
                    display_path = real_path + marker
688
 
                elif names[0] != names[1] or parent_ids[0] != parent_ids[1]:
689
 
                    # Renamed
690
 
                    if changed_content or executables[0] != executables[1]:
691
 
                        # and modified
692
 
                        change_type = renamed_and_modified
693
 
                    else:
694
 
                        change_type = renamed
695
 
                    display_path = (paths[0] + source_marker
696
 
                                    + ' => ' + paths[1] + marker)
697
 
                elif kinds[0] != kinds[1]:
698
 
                    change_type = kind_changed
699
 
                    display_path = (paths[0] + source_marker
700
 
                                    + ' => ' + paths[1] + marker)
701
 
                elif changed_content or executables[0] != executables[1]:
702
 
                    change_type = modified
703
 
                    display_path = real_path + marker
704
 
                else:
705
 
                    assert False, "How did we get here?"
706
 
 
707
 
                status.append((file_id, real_path, change_type, display_path))
708
 
        finally:
709
 
            source.unlock()
710
 
    finally:
711
 
        target.unlock()
712
 
 
713
 
    return status
 
270
 
 
271
        mapping = {
 
272
                # map GtkSourceView tags to colordiff names
 
273
                # since GSV is richer, accept new names for extra bits,
 
274
                # defaulting to old names if they're not present
 
275
                'Added@32@line': ['newtext'],
 
276
                'Removed@32@line': ['oldtext'],
 
277
                'Location': ['location', 'diffstuff'],
 
278
                'Diff@32@file': ['file', 'diffstuff'],
 
279
                'Special@32@case': ['specialcase', 'diffstuff'],
 
280
        }
 
281
 
 
282
        for tag in lang.get_tags():
 
283
            tag_id = tag.get_id()
 
284
            keys = mapping.get(tag_id, [])
 
285
            color = None
 
286
 
 
287
            for key in keys:
 
288
                color = colors.get(key, None)
 
289
                if color is not None:
 
290
                    break
 
291
 
 
292
            if color is None:
 
293
                continue
 
294
 
 
295
            style = gtksourceview.SourceTagStyle()
 
296
            try:
 
297
                style.foreground = gtk.gdk.color_parse(color)
 
298
            except ValueError:
 
299
                warning('not a valid color: %s' % color)
 
300
            else:
 
301
                lang.set_tag_style(tag_id, style)
 
302
 
 
303
    @staticmethod
 
304
    def parse_colordiffrc(fileobj):
 
305
        """Parse fileobj as a colordiff configuration file.
 
306
        
 
307
        :return: A dict with the key -> value pairs.
 
308
        """
 
309
        colors = {}
 
310
        for line in fileobj:
 
311
            if re.match(r'^\s*#', line):
 
312
                continue
 
313
            if '=' not in line:
 
314
                continue
 
315
            key, val = line.split('=', 1)
 
316
            colors[key.strip()] = val.strip()
 
317
        return colors
 
318