aboutsummaryrefslogtreecommitdiffstats
path: root/camel/camel-folder.c
blob: c82541e262e3b4b96bcb6e1d901a6789d0fc0fa1 (plain) (blame)
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
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camelFolder.c : Abstract class for an email folder */

/* 
 *
 * Copyright (C) 1999 Bertrand Guiheneuf <Bertrand.Guiheneuf@aful.org> .
 *
 * This program is free software; you can redistribute it and/or 
 * modify it under the terms of the GNU 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 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
 */
#include <config.h>
#include "camel-folder.h"
#include "camel-log.h"
#include "string-utils.h"

static GtkObjectClass *parent_class=NULL;

/* Returns the class for a CamelFolder */
#define CF_CLASS(so) CAMEL_FOLDER_CLASS (GTK_OBJECT(so)->klass)

static void _init_with_store (CamelFolder *folder, CamelStore *parent_store);
static void _open (CamelFolder *folder, CamelFolderOpenMode mode);
static void _close (CamelFolder *folder, gboolean expunge);
static void _set_name (CamelFolder *folder, const gchar *name);
/*  static void _set_full_name (CamelFolder *folder, const gchar *name); */
static const gchar *_get_name (CamelFolder *folder);
static const gchar *_get_full_name (CamelFolder *folder);
static gboolean _can_hold_folders (CamelFolder *folder);
static gboolean _can_hold_messages(CamelFolder *folder);
static gboolean _exists (CamelFolder  *folder);
static gboolean _is_open (CamelFolder *folder);
static CamelFolder *_get_folder (CamelFolder *folder, const gchar *folder_name);
static gboolean _create (CamelFolder *folder);
static gboolean _delete (CamelFolder *folder, gboolean recurse);
static gboolean _delete_messages (CamelFolder *folder);
static CamelFolder *_get_parent_folder (CamelFolder *folder);
static CamelStore *_get_parent_store (CamelFolder *folder);
static CamelFolderOpenMode _get_mode (CamelFolder *folder);
static GList *_list_subfolders (CamelFolder *folder);
static void _expunge (CamelFolder *folder);
static CamelMimeMessage *_get_message (CamelFolder *folder, gint number);
static gint _get_message_count (CamelFolder *folder);
static gint _append_message (CamelFolder *folder, CamelMimeMessage *message);
static const GList *_list_permanent_flags (CamelFolder *folder);
static void _copy_message_to (CamelFolder *folder, CamelMimeMessage *message, CamelFolder *dest_folder);

static const gchar *_get_message_uid (CamelFolder *folder, CamelMimeMessage *message);
static CamelMimeMessage *_get_message_by_uid (CamelFolder *folder, const gchar *uid);
static GList *_get_uid_list  (CamelFolder *folder);


static void _finalize (GtkObject *object);


static void
camel_folder_class_init (CamelFolderClass *camel_folder_class)
{
    GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (camel_folder_class);
    
    parent_class = gtk_type_class (gtk_object_get_type ());
    
    /* virtual method definition */
    camel_folder_class->init_with_store = _init_with_store;
    camel_folder_class->open = _open;
    camel_folder_class->close = _close;
    camel_folder_class->set_name = _set_name;
    camel_folder_class->get_name = _get_name;
    camel_folder_class->can_hold_folders = _can_hold_folders;
    camel_folder_class->can_hold_messages = _can_hold_messages;
    camel_folder_class->exists = _exists;
    camel_folder_class->is_open = _is_open;
    camel_folder_class->get_folder = _get_folder;
    camel_folder_class->create = _create;
    camel_folder_class->delete = _delete;
    camel_folder_class->delete_messages = _delete_messages;
    camel_folder_class->get_parent_folder = _get_parent_folder;
    camel_folder_class->get_parent_store = _get_parent_store;
    camel_folder_class->get_mode = _get_mode;
    camel_folder_class->list_subfolders = _list_subfolders;
    camel_folder_class->expunge = _expunge;
    camel_folder_class->get_message = _get_message;
    camel_folder_class->get_message_count = _get_message_count;
    camel_folder_class->append_message = _append_message;
    camel_folder_class->list_permanent_flags = _list_permanent_flags;
    camel_folder_class->copy_message_to;
    camel_folder_class->get_message_uid = _get_message_uid;
    camel_folder_class->get_message_by_uid = _get_message_by_uid;
    camel_folder_class->get_uid_list = _get_uid_list;

    /* virtual method overload */
    gtk_object_class->finalize = _finalize;
}







GtkType
camel_folder_get_type (void)
{
    static GtkType camel_folder_type = 0;
    
    if (!camel_folder_type) {
        GtkTypeInfo camel_folder_info = 
        {
            "CamelFolder",
            sizeof (CamelFolder),
            sizeof (CamelFolderClass),
            (GtkClassInitFunc) camel_folder_class_init,
            (GtkObjectInitFunc) NULL,
                /* reserved_1 */ NULL,
                /* reserved_2 */ NULL,
            (GtkClassInitFunc) NULL,
        };
        
        camel_folder_type = gtk_type_unique (gtk_object_get_type (), &camel_folder_info);
    }
    
    return camel_folder_type;
}


static void           
_finalize (GtkObject *object)
{
    CamelFolder *camel_folder = CAMEL_FOLDER (object);
    GList *message_node;

    CAMEL_LOG_FULL_DEBUG ("Entering CamelFolder::finalize\n");

    g_free (camel_folder->name);
    g_free (camel_folder->full_name);
    g_free (camel_folder->permanent_flags);
    if (camel_folder->message_list) {
        /* unref all messages got from the folder */
        message_node = camel_folder->message_list;
        while (message_node) {
            gtk_object_unref (GTK_OBJECT (message_node->data));
            g_list_next (message_node);
        }
        g_list_free (camel_folder->message_list);
    }
    GTK_OBJECT_CLASS (parent_class)->finalize (object);
    CAMEL_LOG_FULL_DEBUG ("Leaving CamelFolder::finalize\n");
}


/**
 * _init_with_store: init the folder by setting its parent store.
 * @folder: folder object to initialize
 * @parent_store: parent store object of the folder
 * 
 * 
 **/
static void 
_init_with_store (CamelFolder *folder, CamelStore *parent_store)
{
    g_assert(folder);
    g_assert(parent_store);
    
    if (folder->parent_store) gtk_object_unref (GTK_OBJECT (folder->parent_store));
    folder->parent_store = parent_store;
    if (parent_store) gtk_object_ref (GTK_OBJECT (parent_store));
    folder->open_mode = FOLDER_OPEN_UNKNOWN;
    folder->open_state = FOLDER_CLOSE;
    folder->name = NULL;
    folder->full_name = NULL;
}




/**
 * _open: Open a folder
 * @folder: The folder object
 * @mode: open mode (R/W/RW ?)
 * 
 * 
 **/
static void
_open (CamelFolder *folder, CamelFolderOpenMode mode)
{
    folder->open_state = FOLDER_OPEN;
    folder->open_mode = mode;
}


void camel_folder_open (CamelFolder *folder, CamelFolderOpenMode mode)
{   
    CF_CLASS(folder)->open (folder, mode);
}



/**
 * _close:Close a folder.
 * @folder: 
 * @expunge: if TRUE, the flagged message are deleted.
 * 
 * Put a folder in its closed state, and possibly 
 * expunge the flagged messages.
 **/
static void
_close (CamelFolder *folder, gboolean expunge)
{
    if (expunge) camel_folder_expunge (folder, FALSE);
    folder->open_state = FOLDER_CLOSE;
}

void 
camel_folder_close (CamelFolder *folder, gboolean expunge)
{
    CF_CLASS(folder)->close (folder, expunge);
}



static void
_set_name (CamelFolder *folder, const gchar *name)
{
    gchar separator;
    gchar *full_name;
    const gchar *parent_full_name;
    
    g_assert (folder);
    g_assert (name);
    g_assert (folder->parent_store);
    
    g_free (folder->name);
    g_free (folder->full_name);
    
    separator = camel_store_get_separator (folder->parent_store);
    
    if (folder->parent_folder) {
        parent_full_name = camel_folder_get_full_name (folder->parent_folder);
        full_name = g_strdup_printf ("%s%d%s", parent_full_name, separator, name);
        
    } else {
        full_name = g_strdup (name);
    }
    
    folder->name = g_strdup (name);
    folder->full_name = full_name;
    
}


/**
 * camel_folder_set_name:set the (short) name of the folder
 * @folder: folder
 * @name: new name of the folder
 * 
 * set the name of the folder. 
 * 
 * 
 **/
void 
camel_folder_set_name (CamelFolder *folder, const gchar *name)
{
    CF_CLASS(folder)->set_name (folder, name);
}


#if 0
static void
_set_full_name (CamelFolder *folder, const gchar *name)
{
    g_free(folder->full_name);
    folder->full_name = g_strdup (name);
}


/**
 * camel_folder_set_full_name:set the (full) name of the folder
 * @folder: folder
 * @name: new name of the folder
 * 
 * set the name of the folder. 
 * 
 **/
void 
camel_folder_set_full_name (CamelFolder *folder, const gchar *name)
{
    CF_CLASS(folder)->set_full_name (folder, name);
}
#endif

static const gchar *
_get_name (CamelFolder *folder)
{
    return folder->name;
}


/**
 * camel_folder_get_name: get the (short) name of the folder
 * @folder: 
 * 
 * get the name of the folder. The fully qualified name
 * can be obtained with the get_full_ame method (not implemented)
 *
 * Return value: name of the folder
 **/
const gchar *
camel_folder_get_name (CamelFolder *folder)
{
    return CF_CLASS(folder)->get_name (folder);
}



static const gchar *
_get_full_name (CamelFolder *folder)
{
    return folder->full_name;
}

/**
 * camel_folder_get_full_name:get the (full) name of the folder
 * @folder: folder to get the name 
 * 
 * get the name of the folder. 
 * 
 * Return value: full name of the folder
 **/
const gchar *
camel_folder_get_full_name (CamelFolder *folder)
{
    return CF_CLASS(folder)->get_full_name (folder);
}


/**
 * _can_hold_folders: tests if the folder can contain other folders
 * @folder: The folder object 
 * 
 * Tests if a folder can contain other folder 
 * (as for example MH folders)
 * 
 * Return value: 
 **/
static gboolean
_can_hold_folders (CamelFolder *folder)
{
    return folder->can_hold_folders;
}




/**
 * _can_hold_messages: tests if the folder can contain messages
 * @folder: The folder object
 * 
 * Tests if a folder object can contain messages. 
 * In the case it can not, it most surely can only 
 * contain folders (rare).
 * 
 * Return value: true if it can contain messages false otherwise
 **/
static gboolean
_can_hold_messages (CamelFolder *folder)
{
    return folder->can_hold_messages;
}



static gboolean
_exists (CamelFolder *folder)
{
    return FALSE;
}


/**
 * _exists: tests if the folder object exists in its parent store.
 * @folder: folder object
 * 
 * Test if a folder exists on a store. A folder can be 
 * created without physically on a store. In that case, 
 * use CamelFolder::create to create it 
 * 
 * Return value: true if the folder exists on the store false otherwise 
 **/
gboolean
camel_folder_exists (CamelFolder *folder)
{
    return (CF_CLASS(folder)->exists (folder));
}



/**
 * _is_open: test if the folder is open 
 * @folder: The folder object
 * 
 * Tests if a folder is open. If not open it can be opened 
 * CamelFolder::open
 * 
 * Return value: true if the folder exists, false otherwise
 **/
static gboolean
_is_open (CamelFolder *folder)
{
    return (folder->open_state == FOLDER_OPEN);
} 





static CamelFolder *
_get_folder (CamelFolder *folder, const gchar *folder_name)
{
    CamelFolder *new_folder;
    gchar *full_name;
    const gchar *current_folder_full_name;
    gchar separator;
    
    g_assert (folder);
    g_assert (folder_name);
    
    if (!folder->parent_store) return NULL;
    
    current_folder_full_name = camel_folder_get_full_name (folder);
    if (!current_folder_full_name) return NULL;
    
    separator = camel_store_get_separator (folder->parent_store);
    full_name = g_strdup_printf ("%s%d%s", current_folder_full_name, separator, folder_name);
    
    new_folder = camel_store_get_folder (folder->parent_store, full_name);
    return new_folder;
}



/**
 * camel_folder_get_folder: return the (sub)folder object that is specified
 * @folder: the folder
 * @folder_name: subfolder path
 * 
 * This method returns a folder objects. This folder
 * is necessarily a subfolder of the current folder. 
 * It is an error to ask a folder begining with the 
 * folder separator character.  
 * 
 * Return value: Required folder. NULL if the subfolder object  could not be obtained
 **/
CamelFolder *
camel_folder_get_folder (CamelFolder *folder, gchar *folder_name)
{
    return (CF_CLASS(folder)->get_folder(folder,folder_name));
}




/**
 * _create: creates a folder on its store
 * @folder: a CamelFolder object.
 * 
 * this routine handles the recursion mechanism.
 * Children classes have to implement the actual
 * creation mechanism. They must call this method
 * before physically creating the folder in order
 * to be sure the parent folder exists.
 * Calling this routine on an existing folder is
 * not an error, and returns %TRUE.
 * 
 * Return value: %TRUE if the folder exists, %FALSE otherwise 
 **/
static gboolean
_create(CamelFolder *folder)
{
    gchar *prefix;
    gchar dich_result;
    CamelFolder *parent;
    gchar sep;
    
    g_assert (folder);
    g_assert (folder->parent_store);
    g_assert (folder->name);
    
    if (CF_CLASS(folder)->exists (folder))
        return TRUE;
    
    sep = camel_store_get_separator (folder->parent_store); 
    if (folder->parent_folder)
        camel_folder_create (folder->parent_folder);
    else {   
        if (folder->full_name) {
            dich_result = string_dichotomy (
                            folder->full_name, sep, &prefix, NULL,
                            STRING_DICHOTOMY_STRIP_TRAILING | STRING_DICHOTOMY_RIGHT_DIR);
            if (dich_result!='o') {
                g_warning("I have to handle the case where the path is not OK\n"); 
                return FALSE;
            } else {
                parent = camel_store_get_folder (folder->parent_store, prefix);
                camel_folder_create (parent);
            }
        }
    }   
    return TRUE;
}


/**
 * camel_folder_create: create the folder object on the physical store
 * @folder: folder object to create
 * 
 * This routine physically creates the folder object on 
 * the store. Having created the  object does not
 * mean the folder physically exists. If it does not
 * exists, this routine will create it.
 * if the folder full name contains more than one level
 * of hierarchy, all folders between the current folder
 * and the last folder name will be created if not existing.
 * 
 * Return value: 
 **/
gboolean
camel_folder_create (CamelFolder *folder)
{
    return (CF_CLASS(folder)->create(folder));
}





/**
 * _delete: delete folder 
 * @folder: folder to delete
 * @recurse: true is subfolders must also be deleted
 * 
 * Delete a folder and its subfolders (if recurse is TRUE).
 * The scheme is the following:
 * 1) delete all messages in the folder
 * 2) if recurse is FALSE, and if there are subfolders
 *    return FALSE, else delete current folder and retuen TRUE
 *    if recurse is TRUE, delete subfolders, delete
 *    current folder and return TRUE
 * 
 * subclasses implementing a protocol with a different 
 * deletion behaviour must emulate this one or implement
 * empty folders deletion and call  this routine which 
 * will do all the works for them.
 * Opertions must be done in the folllowing order:
 *  - call this routine
 *  - delete empty folder
 * 
 * Return value: true if the folder has been deleted
 **/
static gboolean
_delete (CamelFolder *folder, gboolean recurse)
{
    GList *subfolders=NULL;
    GList *sf;
    gboolean ok;
    
    g_assert(folder);
    
    /* method valid only on closed folders */
    if (folder->open_state != FOLDER_CLOSE) return FALSE;
    
    /* delete all messages in the folder */
    CF_CLASS(folder)->delete_messages(folder);
    
    subfolders = CF_CLASS(folder)->list_subfolders(folder); 
    if (recurse) { /* delete subfolders */
        if (subfolders) {
            sf = subfolders;
            do {
                /*  CF_CLASS(sf->data)->delete(sf->data, TRUE); */
            } while (sf = sf->next);
        }
    } else if (subfolders) return FALSE;
    
    
    return TRUE;
}



/**
 * camel_folder_delete: delete a folder
 * @folder: folder to delete
 * @recurse: TRUE if subfolders must be deleted
 * 
 * Delete a folder. All messages in the folder 
 * are deleted before the folder is deleted. 
 * When recurse is true, all subfolders are
 * deleted too. When recurse is FALSE and folder 
 * contains subfolders, all messages are deleted,
 * but folder deletion fails. 
 * 
 * Return value: TRUE if deletion was successful
 **/
gboolean camel_folder_delete (CamelFolder *folder, gboolean recurse)
{
    return CF_CLASS(folder)->delete(folder, recurse);
}





/**
 * _delete_messages: delete all messages in the folder
 * @folder: 
 * 
 * 
 * 
 * Return value: 
 **/
static gboolean 
_delete_messages (CamelFolder *folder)
{
    return TRUE;
}


/**
 * camel_folder_delete_messages: delete all messages in the folder
 * @folder: folder 
 * 
 * delete all messages stored in a folder
 * 
 * Return value: TRUE if the messages could be deleted
 **/
gboolean
camel_folder_delete_messages (CamelFolder *folder)
{
    return CF_CLASS(folder)->delete_messages(folder);
}






/**
 * _get_parent_folder: return parent folder
 * @folder: folder to get the parent
 * 
 * 
 * 
 * Return value: 
 **/
static CamelFolder *
_get_parent_folder (CamelFolder *folder)
{
    return folder->parent_folder;
}


/**
 * camel_folder_get_parent_folder:return parent folder
 * @folder: folder to get the parent
 * 
 * 
 * 
 * Return value: 
 **/
CamelFolder *
camel_folder_get_parent_folder (CamelFolder *folder)
{
    return CF_CLASS(folder)->get_parent_folder(folder);
}


/**
 * _get_parent_store: return parent store
 * @folder: folder to get the parent
 * 
 * 
 * 
 * Return value: 
 **/
static CamelStore *
_get_parent_store (CamelFolder *folder)
{
    return folder->parent_store;
}


/**
 * camel_folder_get_parent_store:return parent store
 * @folder: folder to get the parent
 * 
 * 
 * 
 * Return value: 
 **/
CamelStore *
camel_folder_get_parent_store (CamelFolder *folder)
{
    return CF_CLASS(folder)->get_parent_store(folder);
}



/**
 * _get_mode: return the open mode of a folder
 * @folder: 
 * 
 * 
 * 
 * Return value:  open mode of the folder
 **/
static CamelFolderOpenMode
_get_mode (CamelFolder *folder)
{
    return folder->open_mode;
}


/**
 * camel_folder_get_mode: return the open mode of a folder
 * @folder: 
 * 
 * 
 * 
 * Return value:  open mode of the folder
 **/
CamelFolderOpenMode
camel_folder_get_mode (CamelFolder *folder)
{
    return CF_CLASS(folder)->get_mode(folder);
}




static GList *
_list_subfolders (CamelFolder *folder)
{
    return NULL;
}


/**
 * camel_folder_list_subfolders: list subfolders in a folder
 * @folder: the folder
 * 
 * List subfolders in a folder. 
 * 
 * Return value: list of subfolders
 **/
GList *
camel_folder_list_subfolders (CamelFolder *folder)
{
    return CF_CLASS(folder)->list_subfolders(folder);
}




static void
_expunge (CamelFolder *folder)
{

}

/* util func. Should not stay here */
gint
camel_mime_message_number_cmp (gconstpointer a, gconstpointer b)
{
    CamelMimeMessage *m_a = CAMEL_MIME_MESSAGE (a);
    CamelMimeMessage *m_b = CAMEL_MIME_MESSAGE (b);

    return (m_a->message_number - (m_b->message_number));
}

/**
 * camel_folder_expunge: physically delete messages marked as "DELETED"
 * @folder: the folder
 * 
 * Delete messages which have been marked as  "DELETED"
 * 
 * 
 * Return value: list of expunged message objects.
 **/
GList *
camel_folder_expunge (CamelFolder *folder, gboolean want_list)
{
    GList *expunged_list = NULL;
    CamelMimeMessage *message;
    GList *message_node;
    GList *next_message_node;
    guint nb_expunged = 0;

    
    /* sort message list by ascending message number */
    if (folder->message_list)
        folder->message_list = g_list_sort (folder->message_list, camel_mime_message_number_cmp);

    /* call provider method, 
     *  PROVIDERS MUST SET THE EXPUNGED FLAGS TO TRUE
     * when they expunge a message of the active message list */
    CF_CLASS (folder)->expunge (folder);
    
    message_node = folder->message_list;

    /* look in folder message list which messages
     * need to be expunged  */
    while ( message_node) {
        message = CAMEL_MIME_MESSAGE (message_node->data);

        /* we may free message_node so get the next node now */
        next_message_node = message_node->next;

        if (message) {
            CAMEL_LOG_FULL_DEBUG ("CamelFolder::expunge, examining message %d\n", message->message_number);
            if (message->expunged) {
                if (want_list) 
                    expunged_list = g_list_append (expunged_list, message);
                /* remove the message from active message list */
                g_list_remove_link (folder->message_list, message_node);
                g_list_free_1 (message_node);
                nb_expunged++;
            } else {
                /* readjust message number */
                CAMEL_LOG_FULL_DEBUG ("CamelFolder:: Readjusting message number %d", 
                              message->message_number);
                message->message_number -= nb_expunged;
                CAMEL_LOG_FULL_DEBUG (" to %d\n", message->message_number);
            }
        }
        else {
            CAMEL_LOG_WARNING ("CamelFolder::expunge warning message_node contains no message\n");
        }
        message_node = next_message_node;
        CAMEL_LOG_FULL_DEBUG ("CamelFolder::expunge, examined message node %p\n", message_node);
    }
    
    return expunged_list;
}



static CamelMimeMessage *
_get_message (CamelFolder *folder, gint number)
{
    return NULL;
}




/**
 * _get_message: return the message corresponding to that number in the folder
 * @folder: a CamelFolder object
 * @number: the number of the message within the folder.
 * 
 * Return the message corresponding to that number within the folder.
 * 
 * Return value: A pointer on the corresponding message or NULL if no corresponding message exists
 **/
CamelMimeMessage *
camel_folder_get_message (CamelFolder *folder, gint number)
{
    CamelMimeMessage *a_message;
    CamelMimeMessage *new_message = NULL;
    GList *message_node;
    
    message_node = folder->message_list;
    CAMEL_LOG_FULL_DEBUG ("CamelFolder::get_message Looking for message nummber %d\n", number);
    /* look in folder message list if the 
     * if the message has not already been retreived */
    while ((!new_message) && message_node) {
        a_message = CAMEL_MIME_MESSAGE (message_node->data);
        
        if (a_message) {
            CAMEL_LOG_FULL_DEBUG ("CamelFolder::get_message "
                          "found message number %d in the active list\n",
                          a_message->message_number);
            if (a_message->message_number == number) {
                CAMEL_LOG_FULL_DEBUG ("CamelFolder::get_message message "
                              "%d already retreived once: returning %pOK\n", 
                              number, a_message);
                new_message = a_message;
            } 
        } else {
            CAMEL_LOG_WARNING ("CamelFolder::get_message "
                       " problem in the active list, a message was NULL\n");
        }
        message_node = message_node->next;
        
        CAMEL_LOG_FULL_DEBUG ("CamelFolder::get_message message node = %p\n", message_node);
    }
    if (!new_message) new_message = CF_CLASS (folder)->get_message (folder, number);
    if (!new_message) return NULL;

    /* if the message has not been already put in 
     * this folder active message list, put it in */
    if ((!folder->message_list) || (!g_list_find (folder->message_list, new_message)))
        folder->message_list = g_list_append (folder->message_list, new_message);
    
    return new_message;
}


static gint
_get_message_count (CamelFolder *folder)
{
    return -1;
}



/**
 * camel_folder_get_message_count: get the number of messages in the folder
 * @folder: A CamelFolder object
 * 
 * Returns the number of messages in the folder.
 * 
 * Return value: the number of messages or -1 if unknown.
 **/
gint
camel_folder_get_message_count (CamelFolder *folder)
{
    return CF_CLASS (folder)->get_message_count (folder);
}


static gint
_append_message (CamelFolder *folder, CamelMimeMessage *message)
{
    return -1;
}


gint camel_folder_append_message (CamelFolder *folder, CamelMimeMessage *message)
{   
    return  CF_CLASS (folder)->append_message (folder, message);
}


static const GList *
_list_permanent_flags (CamelFolder *folder)
{
    return folder->permanent_flags;
}


const GList *
camel_folder_list_permanent_flags (CamelFolder *folder)
{
    return CF_CLASS (folder)->list_permanent_flags (folder);
}




static void
_copy_message_to (CamelFolder *folder, CamelMimeMessage *message, CamelFolder *dest_folder)
{
    camel_folder_append_message (dest_folder, message);
}


void
camel_folder_copy_message_to (CamelFolder *folder, CamelMimeMessage *message, CamelFolder *dest_folder)
{
    CF_CLASS (folder)->copy_message_to (folder, message, dest_folder);;
}





/* summary stuff */

gboolean
camel_folder_has_summary_capability (CamelFolder *folder)
{
    return folder->has_summary_capability;
}


CamelFolderSummary *
camel_folder_get_summary (CamelFolder *folder)
{
    return folder->summary;
}




/* UIDs stuff */

/**
 * camel_folder_has_uid_capability: detect if the folder support UIDs
 * @folder: Folder object
 * 
 * Detects if a folder supports UID operations, that is
 * reference messages by a Unique IDentifier instead
 * of by message number.  
 * 
 * Return value: TRUE if the folder supports UIDs 
 **/
gboolean
camel_folder_has_uid_capability (CamelFolder *folder)
{
    return folder->has_uid_capability;
}



static const gchar *
_get_message_uid (CamelFolder *folder, CamelMimeMessage *message)
{
    return NULL;
}

/**
 * camel_folder_get_message_uid: get the UID of a message in a folder
 * @folder: Folder in which the UID must refer to
 * @message: Message object 
 * 
 * Return the UID of a message relatively to a folder.
 * A message can have different UID, each one corresponding
 * to a different folder, if the message is referenced in
 * several folders. 
 * 
 * Return value: The UID of the message in the folder
 **/
const gchar * 
camel_folder_get_message_uid (CamelFolder *folder, CamelMimeMessage *message)
{
    if (!folder->has_uid_capability) return NULL;
    return CF_CLASS (folder)->get_message_uid (folder, message);
}



/* the next two func are left there temporarily */
static const gchar *
_get_message_uid_by_number (CamelFolder *folder, gint message_number)
{
    return NULL;
}

/**
 * camel_folder_get_message_uid_by_number: get the UID corresponding to a message number
 * @folder: Folder object
 * @message_number: Message number
 * 
 * get the UID corresponding to a message number. 
 * Use of this routine should be avoiding, as on 
 * folders supporting UIDs, message numbers should
 * not been used.
 * 
 * Return value: 
 **/
const gchar * 
camel_folder_get_message_uid_by_number (CamelFolder *folder, gint message_number)
{
    //if (!folder->has_uid_capability) return NULL;
    //return CF_CLASS (folder)->get_message_uid_by_number (folder, message_number);
}


static CamelMimeMessage *
_get_message_by_uid (CamelFolder *folder, const gchar *uid)
{
    return NULL;
}


/**
 * camel_folder_get_message_by_uid: Get a message by its UID in a folder
 * @folder: the folder object
 * @uid: the UID
 * 
 * Get a message from its UID in the folder. Messages 
 * are cached within a folder, that is, asking twice
 * for the same UID returns the same message object.
 * 
 * Return value: Message corresponding to the UID
 **/
CamelMimeMessage *
camel_folder_get_message_by_uid  (CamelFolder *folder, const gchar *uid)
{
    if (!folder->has_uid_capability) return NULL;
    return CF_CLASS (folder)->get_message_by_uid (folder, uid);
}

static GList *
_get_uid_list  (CamelFolder *folder)
{
    return NULL;
}

/**
 * camel_folder_get_uid_list: get the list of UID in a folder
 * @folder: folder object
 * 
 * get the list of UID available in a folder. This
 * routine is usefull to know what messages are
 * available when the folder does not support
 * summaries. The UIDs in the list must not be freed,
 * the folder object caches them.
 * 
 * Return value: Glist of UID correspondind to the messages available in the folder.
 **/
GList *
camel_folder_get_uid_list  (CamelFolder *folder)
{
    if (!folder->has_uid_capability) return NULL;
    return CF_CLASS (folder)->get_uid_list (folder);
}


/* **** */