This file is indexed.

/usr/bin/gsettings-schema-convert is in gconf2 3.2.6-3.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
#! /usr/bin/python
# vim: set ts=4 sw=4 et: coding=UTF-8
#
# Copyright (c) 2010, Novell, Inc.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
# USA.
#
# Authors: Vincent Untz <vuntz@gnome.org>

# TODO: add alias support for choices
#       choices: 'this-is-an-alias' = 'real', 'other', 'real'
# TODO: we don't support migrating a pair from a gconf schema. It has yet to be
#       seen in real-world usage, though.

import os
import sys

import optparse

try:
    from lxml import etree as ET
except ImportError:
    try:
        from xml.etree import cElementTree as ET
    except ImportError:
        import cElementTree as ET


GSETTINGS_SIMPLE_SCHEMA_INDENT = '  '
TYPES_FOR_CHOICES = [ 's' ]
TYPES_FOR_RANGE = [ 'y', 'n', 'q', 'i', 'u', 'x', 't', 'h', 'd' ]


######################################


def is_schema_id_valid(id):
    # FIXME: there's currently no restriction on what an id should contain,
    # but there might be some later on
    return True


def is_key_name_valid(name):
    # FIXME: we could check that name is valid ([-a-z0-9], no leading/trailing
    # -, no leading digit, 32 char max). Note that we don't want to validate
    # the key when converting from gconf, though, since gconf keys use
    # underscores.
    return True


def are_choices_valid(choices):
    # FIXME: we could check that all values have the same type with GVariant
    return True


def is_range_valid(minmax):
    # FIXME: we'll be able to easily check min < max once we can convert the
    # values with GVariant
    return True


######################################


class GSettingsSchemaConvertException(Exception):
    pass


######################################


class GSettingsSchemaRoot:

    def __init__(self):
        self.gettext_domain = None
        self.schemas = []

    def get_simple_string(self):
        need_empty_line = False
        result = ''

        for schema in self.schemas:
            if need_empty_line:
                result += '\n'
            result += schema.get_simple_string()
            if result:
                need_empty_line = True

        # Only put the gettext domain if we have some content
        if result and self.gettext_domain:
            result = 'gettext-domain: %s\n\n%s' % (self.gettext_domain, result)

        return result

    def get_xml_node(self):
        schemalist_node = ET.Element('schemalist')
        if self.gettext_domain:
            schemalist_node.set('gettext-domain', self.gettext_domain)
        for schema in self.schemas:
            for schema_node in schema.get_xml_nodes():
                schemalist_node.append(schema_node)
        return schemalist_node


######################################


class GSettingsSchema:

    def __init__(self):
        self.id = None
        self.path = None
        # only set when this schema is a child
        self.name = None

        self.gettext_domain = None
        self.children = []
        self.keys = []

    def get_simple_string(self, current_indent = '', parent_path = ''):
        if not self.children and not self.keys:
            return ''

        content = self._get_simple_string_for_content(current_indent)
        if not content:
            return ''

        if self.name:
            id = 'child %s' % self.name
            force_empty_line = False
        else:
            id = 'schema %s' % self.id
            force_empty_line = True

        result = ''
        result += '%s%s:\n' % (current_indent, id)
        result += self._get_simple_string_for_attributes(current_indent, parent_path, force_empty_line)
        result += content

        return result

    def _get_simple_string_for_attributes(self, current_indent, parent_path, force_empty_line):
        need_empty_line = force_empty_line
        result = ''

        if self.gettext_domain:
            result += '%sgettext-domain: %s\n' % (current_indent + GSETTINGS_SIMPLE_SCHEMA_INDENT, self.gettext_domain)
            need_empty_line = True
        if self.path and (not parent_path or (self.path != '%s%s/' % (parent_path, self.name))):
            result += '%spath: %s\n' % (current_indent + GSETTINGS_SIMPLE_SCHEMA_INDENT, self.path)
            need_empty_line = True
        if need_empty_line:
            result += '\n'

        return result

    def _get_simple_string_for_content(self, current_indent):
        need_empty_line = False
        result = ''

        for key in self.keys:
            result += key.get_simple_string(current_indent + GSETTINGS_SIMPLE_SCHEMA_INDENT)
            need_empty_line = True

        for child in self.children:
            if need_empty_line:
                result += '\n'
            result += child.get_simple_string(current_indent + GSETTINGS_SIMPLE_SCHEMA_INDENT, self.path)
            if result:
                need_empty_line = True

        return result

    def get_xml_nodes(self):
        if not self.children and not self.keys:
            return []

        (node, children_nodes) = self._get_xml_nodes_for_content()
        if node is None:
            return []

        node.set('id', self.id)
        if self.path:
            node.set('path', self.path)

        nodes = [ node ]
        nodes.extend(children_nodes)

        return nodes

    def _get_xml_nodes_for_content(self):
        if not self.keys and not self.children:
            return (None, None)

        children_nodes = []

        schema_node = ET.Element('schema')
        if self.gettext_domain:
            schema_node.set('gettext-domain', self.gettext_domain)

        for key in self.keys:
            key_node = key.get_xml_node()
            schema_node.append(key_node)
        for child in self.children:
            child_nodes = child.get_xml_nodes()
            children_nodes.extend(child_nodes)
            child_node = ET.SubElement(schema_node, 'child')
            if not child.name:
                raise GSettingsSchemaConvertException('Internal error: child being processed with no schema id.')
            child_node.set('name', child.name)
            child_node.set('schema', '%s' % child.id)

        return (schema_node, children_nodes)


######################################


class GSettingsSchemaKey:

    def __init__(self):
        self.name = None
        self.type = None
        self.default = None
        self.typed_default = None
        self.l10n = None
        self.l10n_context = None
        self.summary = None
        self.description = None
        self.choices = None
        self.range = None

    def fill(self, name, type, default, typed_default, l10n, l10n_context, summary, description, choices, range):
        self.name = name
        self.type = type
        self.default = default
        self.typed_default = typed_default
        self.l10n = l10n
        self.l10n_context = l10n_context
        self.summary = summary
        self.description = description
        self.choices = choices
        self.range = range

    def _has_range_choices(self):
        return self.choices is not None and self.type in TYPES_FOR_CHOICES

    def _has_range_minmax(self):
        return self.range is not None and len(self.range) == 2 and self.type in TYPES_FOR_RANGE

    def get_simple_string(self, current_indent):
        # FIXME: kill this when we'll have python bindings for GVariant. Right
        # now, every simple format schema we'll generate has to have an
        # explicit type since we can't guess the type later on when converting
        # to XML.
        self.typed_default = '@%s %s' % (self.type, self.default)

        result = ''
        result += '%skey %s = %s\n' % (current_indent, self.name, self.typed_default or self.default)
        current_indent += GSETTINGS_SIMPLE_SCHEMA_INDENT
        if self.l10n:
            l10n = self.l10n
            if self.l10n_context:
                l10n += ' %s' % self.l10n_context
            result += '%sl10n: %s\n' % (current_indent, l10n)
        if self.summary:
            result += '%ssummary: %s\n' % (current_indent, self.summary)
        if self.description:
            result += '%sdescription: %s\n' % (current_indent, self.description)
        if self._has_range_choices():
            result += '%schoices: %s\n' % (current_indent, ', '.join(self.choices))
        elif self._has_range_minmax():
            result += '%srange: %s\n' % (current_indent, '%s..%s' % (self.range[0] or '', self.range[1] or ''))
        return result

    def get_xml_node(self):
        key_node = ET.Element('key')
        key_node.set('name', self.name)
        key_node.set('type', self.type)
        default_node = ET.SubElement(key_node, 'default')
        default_node.text = self.default
        if self.l10n:
            default_node.set('l10n', self.l10n)
            if self.l10n_context:
                default_node.set('context', self.l10n_context)
        if self.summary:
            summary_node = ET.SubElement(key_node, 'summary')
            summary_node.text = self.summary
        if self.description:
            description_node = ET.SubElement(key_node, 'description')
            description_node.text = self.description
        if self._has_range_choices():
            choices_node = ET.SubElement(key_node, 'choices')
            for choice in self.choices:
                choice_node = ET.SubElement(choices_node, 'choice')
                choice_node.set('value', choice)
        elif self._has_range_minmax():
            (min, max) = self.range
            range_node = ET.SubElement(key_node, 'range')
            min_node = ET.SubElement(range_node, 'min')
            if min:
                min_node.text = min
            max_node = ET.SubElement(range_node, 'max')
            if max:
                max_node.text = max
        return key_node


######################################


class SimpleSchemaParser:

    allowed_tokens = {
      ''               : [ 'gettext-domain', 'schema' ],
      'gettext-domain' : [ ],
      'schema'         : [ 'gettext-domain', 'path', 'child', 'key' ],
      'path'           : [ ],
      'child'          : [ 'gettext-domain', 'child', 'key' ],
      'key'            : [ 'l10n', 'summary', 'description', 'choices', 'range' ],
      'l10n'           : [ ],
      'summary'        : [ ],
      'description'    : [ ],
      'choices'        : [ ],
      'range'          : [ ]
    }

    allowed_separators = [ ':', '=' ]

    def __init__(self, file):
        self.file = file

        self.root = GSettingsSchemaRoot()

        # this is just a convenient helper to remove the leading indentation
        # that should be common to all lines
        self.leading_indent = None

        self.indent_stack = []
        self.token_stack = []
        self.object_stack = [ self.root ]

        self.previous_token = None
        self.current_token = None
        self.unparsed_line = ''

    def _eat_indent(self):
        line = self.unparsed_line
        i = 0
        buf = ''
        previous_max_index = len(self.indent_stack) - 1
        index = -1

        while i < len(line) - 1 and line[i].isspace():
            buf += line[i]
            i += 1
            if previous_max_index > index:
                if buf == self.indent_stack[index + 1]:
                    buf = ''
                    index += 1
                    continue
                elif self.indent_stack[index + 1].startswith(buf):
                    continue
                else:
                    raise GSettingsSchemaConvertException('Inconsistent indentation.')
            else:
                continue

        if buf and previous_max_index > index:
            raise GSettingsSchemaConvertException('Inconsistent indentation.')
        elif buf and previous_max_index <= index:
            self.indent_stack.append(buf)
        elif previous_max_index > index:
            self.indent_stack = self.indent_stack[:index + 1]

        self.unparsed_line = line[i:]

    def _parse_word(self):
        line = self.unparsed_line
        i = 0
        while i < len(line) and not line[i].isspace() and not line[i] in self.allowed_separators:
            i += 1
        self.unparsed_line = line[i:]
        return line[:i]

    def _word_to_token(self, word):
        lower = word.lower()
        if lower and lower in self.allowed_tokens.keys():
            return lower
        raise GSettingsSchemaConvertException('\'%s\' is not a valid token.' % lower)

    def _token_allow_separator(self):
        return self.current_token in [ 'gettext-domain', 'path', 'l10n', 'summary', 'description', 'choices', 'range' ]

    def _parse_id_without_separator(self):
        line = self.unparsed_line
        if line[-1] in self.allowed_separators:
            line = line[:-1].strip()
        if not is_schema_id_valid(line):
            raise GSettingsSchemaConvertException('\'%s\' is not a valid schema id.' % line)

        self.unparsed_line = ''
        return line

    def _parse_key(self):
        line = self.unparsed_line

        split = False
        for separator in self.allowed_separators:
            items = line.split(separator)
            if len(items) == 2:
                split = True
                break

        if not split:
            raise GSettingsSchemaConvertException('Key \'%s\' cannot be parsed.' % line)

        name = items[0].strip()
        if not is_key_name_valid(name):
            raise GSettingsSchemaConvertException('\'%s\' is not a valid key name.' % name)

        type = ''
        value = items[1].strip()
        if value[0] == '@':
            i = 1
            while not value[i].isspace():
                i += 1
            type = value[1:i]
            value = value[i:].strip()
            if not value:
                raise GSettingsSchemaConvertException('No value specified for key \'%s\' (\'%s\').' % (name, line))

        self.unparsed_line = ''

        object = GSettingsSchemaKey()
        object.name = name
        object.type = type
        object.default = value

        return object

    def _parse_l10n(self):
        line = self.unparsed_line

        items = [ item.strip() for item in line.split(' ', 1) if item.strip() ]
        if not items:
            self.unparsed_line = ''
            return (None, None)
        if len(items) == 1:
            self.unparsed_line = ''
            return (items[0], None)
        if len(items) == 2:
            self.unparsed_line = ''
            return (items[0], items[1])

        raise GSettingsSchemaConvertException('Internal error: more items than expected for localization \'%s\'.' % line)

    def _parse_choices(self, object):
        if object.type not in TYPES_FOR_CHOICES:
            raise GSettingsSchemaConvertException('Key \'%s\' of type \'%s\' cannot have choices.' % (object.name, object.type))

        line = self.unparsed_line
        choices = [ item.strip() for item in line.split(',') ]
        if not are_choices_valid(choices):
            raise GSettingsSchemaConvertException('\'%s\' is not a valid choice.' % line)

        self.unparsed_line = ''
        return choices

    def _parse_range(self, object):
        if object.type not in TYPES_FOR_RANGE:
            raise GSettingsSchemaConvertException('Key \'%s\' of type \'%s\' cannot have a range.' % (object.name, object.type))

        line = self.unparsed_line
        minmax = [ item.strip() for item in line.split('..') ]

        if len(minmax) != 2:
            raise GSettingsSchemaConvertException('Range \'%s\' cannot be parsed.' % line)
        if not is_range_valid(minmax):
            raise GSettingsSchemaConvertException('\'%s\' is not a valid range.' % line)

        self.unparsed_line = ''
        return tuple(minmax)

    def parse_line(self, line):
        # make sure that lines with only spaces are ignored and considered as
        # empty lines
        self.unparsed_line = line.rstrip()

        # ignore empty line
        if not self.unparsed_line:
            return

        # look at the indentation to know where we should be
        self._eat_indent()
        if self.leading_indent is None:
            self.leading_indent = len(self.indent_stack)

        # ignore comments
        if self.unparsed_line[0] == '#':
            return

        word = self._parse_word()
        if self.current_token:
            self.previous_token = self.current_token
        self.current_token = self._word_to_token(word)
        self.unparsed_line = self.unparsed_line.lstrip()

        allow_separator = self._token_allow_separator()
        if len(self.unparsed_line) > 0 and self.unparsed_line[0] in self.allowed_separators:
            if allow_separator:
                self.unparsed_line = self.unparsed_line[1:].lstrip()
            else:
                raise GSettingsSchemaConvertException('Separator \'%s\' is not allowed after \'%s\'.' % (self.unparsed_line[0], self.current_token))

        new_level = len(self.indent_stack) - self.leading_indent
        old_level = len(self.token_stack)

        if new_level > old_level + 1:
            raise GSettingsSchemaConvertException('Internal error: stacks not in sync.')
        elif new_level <= old_level:
            self.token_stack = self.token_stack[:new_level]
            # we always have the root
            self.object_stack = self.object_stack[:new_level + 1]

        if new_level == 0:
            parent_token = ''
        else:
            parent_token = self.token_stack[-1]

        # there's new indentation, but no token is allowed under the previous
        # one
        if new_level == old_level + 1 and self.previous_token != parent_token:
            raise GSettingsSchemaConvertException('\'%s\' is not allowed under \'%s\'.' % (self.current_token, self.previous_token))

        if not self.current_token in self.allowed_tokens[parent_token]:
            if parent_token:
                error = '\'%s\' is not allowed under \'%s\'.' % (self.current_token, parent_token)
            else:
                error = '\'%s\' is not allowed at the root level.' % self.current_token
            raise GSettingsSchemaConvertException(error)

        current_object = self.object_stack[-1]

        new_object = None
        if self.current_token == 'gettext-domain':
            current_object.gettext_domain = self.unparsed_line
        elif self.current_token == 'schema':
            name = self._parse_id_without_separator()
            new_object = GSettingsSchema()
            new_object.id = name
            current_object.schemas.append(new_object)
        elif self.current_token == 'path':
            current_object.path = self.unparsed_line
        elif self.current_token == 'child':
            if not isinstance(current_object, GSettingsSchema):
                raise GSettingsSchemaConvertException('Internal error: child being processed with no parent schema.')
            name = self._parse_id_without_separator()
            new_object = GSettingsSchema()
            new_object.id = '%s.%s' % (current_object.id, name)
            if current_object.path:
                new_object.path = '%s%s/' % (current_object.path, name)
            new_object.name = name
            current_object.children.append(new_object)
        elif self.current_token == 'key':
            new_object =  self._parse_key()
            current_object.keys.append(new_object)
        elif self.current_token == 'l10n':
            (current_object.l10n, current_object.l10n_context) = self._parse_l10n()
        elif self.current_token == 'summary':
            current_object.summary = self.unparsed_line
        elif self.current_token == 'description':
            current_object.description = self.unparsed_line
        elif self.current_token == 'choices':
            current_object.choices = self._parse_choices(current_object)
        elif self.current_token == 'range':
            current_object.range = self._parse_range(current_object)

        if new_object:
            self.token_stack.append(self.current_token)
            self.object_stack.append(new_object)

    def parse(self):
        f = open(self.file, 'r')
        lines = [ line[:-1] for line in f.readlines() ]
        f.close()

        try:
            current_line_nb = 0
            for line in lines:
                current_line_nb += 1
                self.parse_line(line)
        except GSettingsSchemaConvertException, e:
            raise GSettingsSchemaConvertException('%s:%s: %s' % (os.path.basename(self.file), current_line_nb, e))

        return self.root


######################################


class XMLSchemaParser:

    def __init__(self, file):
        self.file = file

        self.root = None

    def _parse_key(self, key_node, schema):
        key = GSettingsSchemaKey()

        key.name = key_node.get('name')
        if not key.name:
            raise GSettingsSchemaConvertException('A key in schema \'%s\' has no name.' % schema.id)
        key.type = key_node.get('type')
        if not key.type:
            raise GSettingsSchemaConvertException('Key \'%s\' in schema \'%s\' has no type.' % (key.name, schema.id))

        default_node = key_node.find('default')
        if default_node is None or not default_node.text.strip():
            raise GSettingsSchemaConvertException('Key \'%s\' in schema \'%s\' has no default value.' % (key.name, schema.id))
        key.l10n = default_node.get('l10n')
        key.l10n_context = default_node.get('context')
        key.default = default_node.text.strip()

        summary_node = key_node.find('summary')
        if summary_node is not None:
            key.summary = summary_node.text.strip()
        description_node = key_node.find('description')
        if description_node is not None:
            key.description = description_node.text.strip()

        range_node = key_node.find('range')
        if range_node is not None:
            min = None
            max = None
            min_node = range_node.find('min')
            if min_node is not None:
                min = min_node.text.strip()
            max_node = range_node.find('max')
            if max_node is not None:
                max = max_node.text.strip()
            if min or max:
                self.range = (min, max)

        choices_node = key_node.find('choices')
        if choices_node is not None:
            self.choices = []
            for choice_node in choices_node.findall('choice'):
                value = choice_node.get('value')
                if value:
                    self.choices.append(value)
                else:
                    raise GSettingsSchemaConvertException('A choice for key \'%s\' in schema \'%s\' has no value.' % (key.name, schema.id))

        return key

    def _parse_schema(self, schema_node):
        schema = GSettingsSchema()

        schema._children = []

        schema.id = schema_node.get('id')
        if not schema.id:
            raise GSettingsSchemaConvertException('A schema has no id.')
        schema.path = schema_node.get('path')
        schema.gettext_domain = schema_node.get('gettext-domain')

        for key_node in schema_node.findall('key'):
            key = self._parse_key(key_node, schema)
            schema.keys.append(key)

        for child_node in schema_node.findall('child'):
            child_name = child_node.get('name')
            if not child_name:
                raise GSettingsSchemaConvertException('A child of schema \'%s\' has no name.' % schema.id)
            child_schema = child_node.get('schema')
            if not child_schema:
                raise GSettingsSchemaConvertException('Child \'%s\' of schema \'%s\' has no schema.' % (child_name, schema.id))

            expected_id = schema.id + '.' + child_name
            if child_schema != expected_id:
                raise GSettingsSchemaConvertException('\'%s\' is too complex for this tool: child \'%s\' of schema \'%s\' has a schema that is not the expected one (\'%s\' vs \'%s\').' % (os.path.basename(self.file), child_name, schema.id, child_schema, expected_id))

            schema._children.append((child_schema, child_name))

        return schema

    def parse(self):
        self.root = GSettingsSchemaRoot()
        schemas = []
        parent = {}

        schemalist_node = ET.parse(self.file).getroot()
        self.root.gettext_domain = schemalist_node.get('gettext-domain')

        for schema_node in schemalist_node.findall('schema'):
            schema = self._parse_schema(schema_node)

            for (child_schema, child_name) in schema._children:
                if parent.has_key(child_schema):
                    raise GSettingsSchemaConvertException('Child \'%s\' is declared by two different schemas: \'%s\' and \'%s\'.' % (child_schema, parent[child_schema], schema.id))
                parent[child_schema] = schema

            schemas.append(schema)

        # now let's move all schemas where they should leave
        for schema in schemas:
            if parent.has_key(schema.id):
                parent_schema = parent[schema.id]

                # check that the paths of parent and child are supported by
                # this tool
                found = False
                for (child_schema, child_name) in parent_schema._children:
                    if child_schema == schema.id:
                        found = True
                        break

                if not found:
                    raise GSettingsSchemaConvertException('Internal error: child not found in parent\'s children.')

                schema.name = child_name
                parent_schema.children.append(schema)
            else:
                self.root.schemas.append(schema)

        return self.root


######################################


def map_gconf_type_to_variant_type(gconftype, gconfsubtype):
    typemap = { 'string': 's', 'int': 'i', 'float': 'd', 'bool': 'b', 'list': 'a' }
    try:
        result = typemap[gconftype]
    except KeyError:
        raise GSettingsSchemaConvertException('Type \'%s\' is not a known gconf type.' % gconftype)

    if gconftype == 'list':
        try:
            result = result + typemap[gconfsubtype]
        except KeyError:
            raise GSettingsSchemaConvertException('Type \'%s\' is not a known gconf type.' % gconfsubtype)

    return result


def fix_value_for_simple_gconf_type(gconftype, gconfvalue):
    '''If there is no value, then we choose a 'neutral' value (false, 0, empty
       string).
    '''
    if gconftype == 'string':
        if not gconfvalue:
            return '\'\''
        return '\'' + gconfvalue.replace('\'', '\\\'') + '\''
    elif gconftype == 'int':
        if not gconfvalue:
            return '0'

        try:
            int(gconfvalue)
        except ValueError:
            raise GSettingsSchemaConvertException()

        return gconfvalue
    elif gconftype == 'float':
        if not gconfvalue:
            return '0.0'

        try:
            float(gconfvalue)
        except ValueError:
            raise GSettingsSchemaConvertException()

        return gconfvalue
    elif gconftype == 'bool':
        if not gconfvalue:
            return 'false'

        value = gconfvalue.lower()
        # gconf schemas can have 0/1 for false/true
        if value == '0':
            return 'false'
        elif value == '1':
            return 'true'
        elif value in ['false', 'true']:
            return value
        else:
            raise GSettingsSchemaConvertException()
    else:
        return gconfvalue


class GConfSchema:

    def __init__(self, node):
        locale_node = node.find('locale')

        self.key = node.find('key').text
        self.type = node.find('type').text
        if self.type == 'list':
            self.list_type = node.find('list_type').text
        else:
            self.list_type = None
        self.varianttype = map_gconf_type_to_variant_type(self.type, self.list_type)

        applyto_node = node.find('applyto')
        if applyto_node is not None:
            self.applyto = node.find('applyto').text
            self.applyto.strip()
            self.keyname = self.applyto[self.applyto.rfind('/')+1:]
            self.prefix = self.applyto[:self.applyto.rfind('/')+1]
        else:
            self.applyto = None
            self.key.strip()
            self.keyname = self.key[self.key.rfind('/')+1:]
            self.prefix = self.key[:self.key.rfind('/')+1]
        self.prefix = os.path.normpath(self.prefix)

        try:
            self.default = locale_node.find('default').text
            self.localized = 'messages'
        except:
            try:
                self.default = node.find('default').text
            except:
                self.default = ''
            self.localized = None
        self.typed_default = None

        self.short = self._get_value_with_locale(node, locale_node, 'short')
        self.long = self._get_value_with_locale(node, locale_node, 'long')

        if self.short:
            self.short = self._oneline(self.short)
        if self.long:
            self.long = self._oneline(self.long)

        # Fix the default value to be parsable by GVariant
        if self.type == 'list':
            l = self.default.strip()
            if not l:
                l = '[]'
            elif not (l[0] == '[' and l[-1] == ']'):
                raise GSettingsSchemaConvertException('Cannot parse default list value \'%s\' for key \'%s\'.' % (self.default, self.applyto or self.key))
            values = l[1:-1].strip()
            if not values:
                self.default = '[]'
                self.typed_default = '@%s []' % self.varianttype
            else:
                items = [ item.strip() for item in values.split(',') ]
                try:
                    items = [ fix_value_for_simple_gconf_type(self.list_type, item) for item in items ]
                except GSettingsSchemaConvertException:
                    raise GSettingsSchemaConvertException('Invalid item(s) of type \'%s\' in default list \'%s\' for key \'%s\'.' % (self.list_type, self.default, self.applyto or self.key))
                values = ', '.join(items)
                self.default = '[ %s ]' % values
        else:
            try:
                self.default = fix_value_for_simple_gconf_type(self.type, self.default)
            except GSettingsSchemaConvertException:
                raise GSettingsSchemaConvertException('Invalid default value \'%s\' of type \'%s\' for key \'%s\'.' % (self.default, self.type, self.applyto or self.key))

    def _get_value_with_locale(self, node, locale_node, element):
        element_node = None
        if locale_node is not None:
            element_node = locale_node.find(element)
        if element_node is None:
            element_node = node.find(element)
        if element_node is not None:
            return element_node.text
        else:
            return None

    def _oneline(self, s):
        lines = s.splitlines()
        result = ''
        for line in lines:
            result += ' ' + line.lstrip()
        return result.strip()

    def convert_underscores(self):
        self.prefix = self.prefix.replace('_', '-')
        self.keyname = self.keyname.replace('_', '-')

    def get_gsettings_schema_key(self):
        key = GSettingsSchemaKey()
        key.fill(self.keyname, self.varianttype, self.default, self.typed_default, self.localized, self.keyname, self.short, self.long, None, None)
        return key


######################################


class GConfSchemaParser:

    def __init__(self, file, default_gettext_domain, default_schema_id, keep_underscores):
        self.file = file
        self.default_gettext_domain = default_gettext_domain
        self.default_schema_id = default_schema_id
        self.keep_underscores = keep_underscores

        self.root = None
        self.default_schema_id_count = 0

    def _insert_schema(self, gconf_schema):
        if not self.keep_underscores:
            gconf_schema.convert_underscores()

        schemas_only = (gconf_schema.applyto is None)

        dirpath = gconf_schema.prefix
        if dirpath[0] != '/':
            raise GSettingsSchemaConvertException('Key \'%s\' has a relative path. There is no relative path in GSettings schemas.' % gconf_schema.applyto or gconf_schema.key)

        # remove leading 'schemas/' for schemas-only keys
        if schemas_only and dirpath.startswith('/schemas/'):
            dirpath = dirpath[len('/schemas'):]

        if len(dirpath) == 1:
            raise GSettingsSchemaConvertException('Key \'%s\' is a toplevel key. Toplevel keys are not accepted in GSettings schemas.' % gconf_schema.applyto or gconf_schema.key)

        # remove trailing slash because we'll split the string
        if dirpath[-1] == '/':
            dirpath = dirpath[:-1]
        # and also remove leading slash when splitting
        hierarchy = dirpath[1:].split('/')

        # we don't want to put apps/ and desktop/ keys in the same schema,
        # so we have a first step where we make sure to create a new schema
        # to avoid this case if necessary
        gsettings_schema = None
        for schema in self.root.schemas:
            if schemas_only:
                schema_path = schema._hacky_path
            else:
                schema_path = schema.path
            if dirpath.startswith(schema_path):
                gsettings_schema = schema
                break
        if not gsettings_schema:
            gsettings_schema = GSettingsSchema()
            if schemas_only:
                gsettings_schema._hacky_path = '/' + hierarchy[0] + '/'
            else:
                gsettings_schema.path = '/' + hierarchy[0] + '/'
            self.root.schemas.append(gsettings_schema)

        # we create the schema hierarchy that leads to this key
        gsettings_dir = gsettings_schema
        for item in hierarchy[1:]:
            subdir = None
            for child in gsettings_dir.children:
                if child.name == item:
                    subdir = child
                    break
            if not subdir:
                subdir = GSettingsSchema()
                # note: the id will be set later on
                if gsettings_dir.path:
                    subdir.path = '%s%s/' % (gsettings_dir.path, item)
                subdir.name = item
                gsettings_dir.children.append(subdir)
            gsettings_dir = subdir

        # we have the final directory, so we can put the key there
        gsettings_dir.keys.append(gconf_schema.get_gsettings_schema_key())

    def _set_children_id(self, schema):
        for child in schema.children:
            child.id = '%s.%s' % (schema.id, child.name)
            self._set_children_id(child)

    def _fix_hierarchy(self):
        for schema in self.root.schemas:
            # we created one schema per level, starting at the root level;
            # however, we don't need to go that far and we can simplify the
            # hierarchy
            while len(schema.children) == 1 and not schema.keys:
                child = schema.children[0]
                schema.children = child.children
                schema.keys = child.keys
                if schema.path:
                    schema.path += child.name + '/'

            # now that we have a toplevel schema, set the id
            if self.default_schema_id:
                schema.id = self.default_schema_id
                if self.default_schema_id_count > 0:
                    schema.id += '.FIXME-%s' % self.default_schema_id_count
                self.default_schema_id_count += 1
            else:
                schema.id = 'FIXME'
            self._set_children_id(schema)

    def parse(self):
        # reset the state of the parser
        self.root = GSettingsSchemaRoot()
        if self.default_gettext_domain:
            self.root.gettext_domain = self.default_gettext_domain
        self.default_schema_id_count = 0

        gconfschemafile_node = ET.parse(self.file).getroot()
        for schemalist_node in gconfschemafile_node.findall('schemalist'):
            for schema_node in schemalist_node.findall('schema'):
                gconf_schema = GConfSchema(schema_node)
                if gconf_schema.localized and not self.root.gettext_domain:
                    self.root.gettext_domain = 'FIXME'
                self._insert_schema(gconf_schema)

        self._fix_hierarchy()

        return self.root


######################################


def main(args):
    parser = optparse.OptionParser()

    parser.add_option("-o", "--output", dest="output",
                      help="output file")
    parser.add_option("-g", "--gconf", action="store_true", dest="gconf",
                      default=False, help="convert a gconf schema file")
    parser.add_option("-d", "--gettext-domain", dest="gettext_domain",
                      help="default gettext domain to use when converting gconf schema file")
    parser.add_option("-i", "--schema-id", dest="schema_id",
                      help="default schema ID to use when converting gconf schema file")
    parser.add_option("-u", "--keep-underscores", action="store_true", dest="keep_underscores",
                      help="keep underscores in key names instead of replacing them with dashes when converting gconf schema file")
    parser.add_option("-s", "--simple", action="store_true", dest="simple",
                      default=False, help="use the simple schema format as output")
    parser.add_option("-x", "--xml", action="store_true", dest="xml",
                      default=False, help="use the xml schema format as output")
    parser.add_option("-f", "--force", action="store_true", dest="force",
                      default=False, help="overwrite output file if already existing")

    (options, args) = parser.parse_args()

    if len(args) < 1:
        print >> sys.stderr, 'Need a filename to work on.'
        return 1
    elif len(args) > 1:
        print >> sys.stderr, 'Too many arguments.'
        return 1

    if options.simple and options.xml:
        print >> sys.stderr, 'Too many output formats requested.'
        return 1

    if not options.gconf and options.gettext_domain:
        print >> sys.stderr, 'Default gettext domain can only be specified when converting a gconf schema.'
        return 1

    if not options.gconf and options.schema_id:
        print >> sys.stderr, 'Default schema ID can only be specified when converting a gconf schema.'
        return 1

    if not options.gconf and options.keep_underscores:
        print >> sys.stderr, 'The --keep-underscores option can only be specified when converting a gconf schema.'
        return 1

    argfile = os.path.expanduser(args[0])
    if not os.path.exists(argfile):
        print >> sys.stderr, '\'%s\' does not exist.' % argfile
        return 1

    if options.output:
        options.output = os.path.expanduser(options.output)

    try:
        if options.output and not options.force and os.path.exists(options.output):
            raise GSettingsSchemaConvertException('\'%s\' already exists. Use --force to overwrite it.' % options.output)

        if options.gconf:
            if not options.simple and not options.xml:
                options.xml = True

            try:
                parser = GConfSchemaParser(argfile, options.gettext_domain, options.schema_id, options.keep_underscores)
                schema_root = parser.parse()
            except SyntaxError, e:
                raise GSettingsSchemaConvertException('\'%s\' does not look like a valid gconf schema file: %s' % (argfile, e))
        else:
            # autodetect if file is XML or not
            try:
                parser = XMLSchemaParser(argfile)
                schema_root = parser.parse()
                if not options.simple and not options.xml:
                    options.simple = True
            except SyntaxError, e:
                parser = SimpleSchemaParser(argfile)
                schema_root = parser.parse()
                if not options.simple and not options.xml:
                    options.xml = True

        if options.xml:
            node = schema_root.get_xml_node()
            try:
                output = ET.tostring(node, pretty_print = True)
            except TypeError:
                # pretty_print only works with lxml
                output = ET.tostring(node)
        else:
            output = schema_root.get_simple_string()

        if not options.output:
            sys.stdout.write(output)
        else:
            try:
                fout = open(options.output, 'w')
                fout.write(output)
                fout.close()
            except GSettingsSchemaConvertException, e:
                fout.close()
                if os.path.exists(options.output):
                    os.unlink(options.output)
                raise e

    except GSettingsSchemaConvertException, e:
        print >> sys.stderr, '%s' % e
        return 1

    return 0


if __name__ == '__main__':
    try:
        res = main(sys.argv)
        sys.exit(res)
    except KeyboardInterrupt:
        pass