src/mh.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2006 Hiroyuki Yamamoto and the Sylpheed-Claws team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <glib/gi18n.h>
  28 #include <dirent.h>
  29 #include <sys/stat.h>
  30 #include <unistd.h>
  31 #include <string.h>
  32 #include <errno.h>
  33
  34 #undef MEASURE_TIME
  35
  36 #ifdef MEASURE_TIME
  37 #  include <sys/time.h>
  38 #endif
  39
  40 #include "folder.h"
  41 #include "mh.h"
  42 #include "procmsg.h"
  43 #include "procheader.h"
  44 #include "utils.h"
  45 #include "codeconv.h"
  46 #include "statusbar.h"
  47 #include "gtkutils.h"
  48
  49 /* Define possible missing constants for Windows. */
  50 #ifdef G_OS_WIN32
  51 # ifndef S_IRGRP
  52 # define S_IRGRP 0
  53 # define S_IWGRP 0
  54 # endif
  55 # ifndef S_IROTH
  56 # define S_IROTH 0
  57 # define S_IWOTH 0
  58 # endif
  59 #endif
  60
  61
  62 static void     mh_folder_init          (Folder         *folder,
  63                                          const gchar    *name,
  64                                          const gchar    *path);
  65
  66 static Folder   *mh_folder_new          (const gchar    *name,
  67                                          const gchar    *path);
  68 static void     mh_folder_destroy       (Folder         *folder);
  69 static gchar   *mh_fetch_msg            (Folder         *folder,
  70                                          FolderItem     *item,
  71                                          gint            num);
  72 static MsgInfo *mh_get_msginfo          (Folder         *folder,
  73                                          FolderItem     *item,
  74                                          gint            num);
  75 static gint     mh_add_msg              (Folder         *folder,
  76                                          FolderItem     *dest,
  77                                          const gchar    *file,
  78                                          MsgFlags       *flags);
  79 static gint     mh_add_msgs             (Folder         *folder,
  80                                          FolderItem     *dest,
  81                                          GSList         *file_list,
  82                                          GRelation      *relation);
  83 static gint     mh_copy_msg             (Folder         *folder,
  84                                          FolderItem     *dest,
  85                                          MsgInfo        *msginfo);
  86 static gint     mh_copy_msgs            (Folder         *folder,
  87                                          FolderItem     *dest,
  88                                          MsgInfoList    *msglist,
  89                                          GRelation      *relation);
  90 static gint     mh_remove_msg           (Folder         *folder,
  91                                          FolderItem     *item,
  92                                          gint            num);
  93 static gint     mh_remove_msgs          (Folder         *folder,
  94                                          FolderItem     *item,
  95                                          MsgInfoList    *msglist,
  96                                          GRelation      *relation);
  97 static gint     mh_remove_all_msg       (Folder         *folder,
  98                                          FolderItem     *item);
  99 static gboolean mh_is_msg_changed       (Folder         *folder,
 100                                          FolderItem     *item,
 101                                          MsgInfo        *msginfo);
 102
 103 static gint     mh_get_num_list         (Folder         *folder,
 104                                          FolderItem     *item,
 105                                          GSList         **list,
 106                                          gboolean       *old_uids_valid);
 107 static gint     mh_scan_tree            (Folder         *folder);
 108
 109 static gint    mh_create_tree           (Folder         *folder);
 110 static FolderItem *mh_create_folder     (Folder         *folder,
 111                                          FolderItem     *parent,
 112                                          const gchar    *name);
 113 static gint    mh_rename_folder         (Folder         *folder,
 114                                          FolderItem     *item,
 115                                          const gchar    *name);
 116 static gint    mh_remove_folder         (Folder         *folder,
 117                                          FolderItem     *item);
 118
 119 static gchar   *mh_get_new_msg_filename         (FolderItem     *dest);
 120
 121 static MsgInfo *mh_parse_msg                    (const gchar    *file,
 122                                                  FolderItem     *item);
 123 static void     mh_remove_missing_folder_items  (Folder         *folder);
 124 static gchar    *mh_filename_from_utf8          (const gchar    *path);
 125 static gchar    *mh_filename_to_utf8            (const gchar    *path);
 126 static void     mh_scan_tree_recursive          (FolderItem     *item);
 127
 128 static gboolean mh_rename_folder_func           (GNode          *node,
 129                                                  gpointer        data);
 130 static gchar   *mh_item_get_path                (Folder *folder,
 131                                                  FolderItem *item);
 132
 133 static gboolean mh_scan_required        (Folder         *folder,
 134                                          FolderItem     *item);
 135 static int mh_item_close                (Folder         *folder,
 136                                          FolderItem     *item);
 137 #if 0
 138 static gint mh_get_flags                (Folder *folder, FolderItem *item,
 139                                          MsgInfoList *msginfo_list, GRelation *msgflags);
 140 #endif
 141 static void mh_write_sequences          (FolderItem     *item, gboolean remove_unseen);
 142
 143 static FolderClass mh_class;
 144
 145 FolderClass *mh_get_class(void)
 146 {
 147         if (mh_class.idstr == NULL) {
 148                 mh_class.type = F_MH;
 149                 mh_class.idstr = "mh";
 150                 mh_class.uistr = "MH";
 151
 152                 /* Folder functions */
 153                 mh_class.new_folder = mh_folder_new;
 154                 mh_class.destroy_folder = mh_folder_destroy;
 155                 mh_class.set_xml = folder_local_set_xml;
 156                 mh_class.get_xml = folder_local_get_xml;
 157                 mh_class.scan_tree = mh_scan_tree;
 158                 mh_class.create_tree = mh_create_tree;
 159
 160                 /* FolderItem functions */
 161                 mh_class.item_get_path = mh_item_get_path;
 162                 mh_class.create_folder = mh_create_folder;
 163                 mh_class.rename_folder = mh_rename_folder;
 164                 mh_class.remove_folder = mh_remove_folder;
 165                 mh_class.get_num_list = mh_get_num_list;
 166                 mh_class.scan_required = mh_scan_required;
 167                 mh_class.close = mh_item_close;
 168                 mh_class.get_flags = NULL; /*mh_get_flags */;
 169
 170                 /* Message functions */
 171                 mh_class.get_msginfo = mh_get_msginfo;
 172                 mh_class.fetch_msg = mh_fetch_msg;
 173                 mh_class.add_msg = mh_add_msg;
 174                 mh_class.add_msgs = mh_add_msgs;
 175                 mh_class.copy_msg = mh_copy_msg;
 176                 mh_class.copy_msgs = mh_copy_msgs;
 177                 mh_class.remove_msg = mh_remove_msg;
 178                 mh_class.remove_msgs = mh_remove_msgs;
 179                 mh_class.remove_all_msg = mh_remove_all_msg;
 180                 mh_class.is_msg_changed = mh_is_msg_changed;
 181         }
 182
 183         return &mh_class;
 184 }
 185
 186 static Folder *mh_folder_new(const gchar *name, const gchar *path)
 187 {
 188         Folder *folder;
 189
 190         folder = (Folder *)g_new0(MHFolder, 1);
 191         folder->klass = &mh_class;
 192         mh_folder_init(folder, name, path);
 193
 194         return folder;
 195 }
 196
 197 static void mh_folder_destroy(Folder *folder)
 198 {
 199         folder_local_folder_destroy(LOCAL_FOLDER(folder));
 200 }
 201
 202 static void mh_folder_init(Folder *folder, const gchar *name, const gchar *path)
 203 {
 204         folder_local_folder_init(folder, name, path);
 205
 206 }
 207
 208 gboolean mh_scan_required(Folder *folder, FolderItem *item)
 209 {
 210         gchar *path;
 211         struct stat s;
 212
 213         path = folder_item_get_path(item);
 214         g_return_val_if_fail(path != NULL, FALSE);
 215
 216         if (stat(path, &s) < 0) {
 217                 FILE_OP_ERROR(path, "stat");
 218                 g_free(path);
 219                 return FALSE;
 220         }
 221
 222         if ((s.st_mtime > item->mtime) &&
 223                 (s.st_mtime - 3600 != item->mtime)) {
 224                 debug_print("MH scan required, folder updated: %s (%ld > %ld)\n",
 225                             path,
 226                             (long int) s.st_mtime,
 227                             (long int) item->mtime);
 228                 g_free(path);
 229                 return TRUE;
 230         }
 231
 232         debug_print("MH scan not required: %s (%ld <= %ld)\n",
 233                     path,
 234                     (long int) s.st_mtime,
 235                     (long int) item->mtime);
 236         g_free(path);
 237         return FALSE;
 238 }
 239
 240 void mh_get_last_num(Folder *folder, FolderItem *item)
 241 {
 242         gchar *path;
 243         DIR *dp;
 244         struct dirent *d;
 245         gint max = 0;
 246         gint num;
 247
 248         g_return_if_fail(item != NULL);
 249
 250         debug_print("mh_get_last_num(): Scanning %s ...\n", item->path);
 251
 252         path = folder_item_get_path(item);
 253         g_return_if_fail(path != NULL);
 254         if (change_dir(path) < 0) {
 255                 g_free(path);
 256                 return;
 257         }
 258         g_free(path);
 259
 260         if ((dp = opendir(".")) == NULL) {
 261                 FILE_OP_ERROR(item->path, "opendir");
 262                 return;
 263         }
 264
 265         while ((d = readdir(dp)) != NULL) {
 266                 if ((num = to_number(d->d_name)) > 0 &&
 267                     dirent_is_regular_file(d)) {
 268                         if (max < num)
 269                                 max = num;
 270                 }
 271         }
 272         closedir(dp);
 273
 274         debug_print("Last number in dir %s = %d\n", item->path, max);
 275         item->last_num = max;
 276 }
 277
 278 gint mh_get_num_list(Folder *folder, FolderItem *item, GSList **list, gboolean *old_uids_valid)
 279 {
 280
 281         gchar *path;
 282         DIR *dp;
 283         struct dirent *d;
 284         gint num, nummsgs = 0;
 285
 286         g_return_val_if_fail(item != NULL, -1);
 287
 288         debug_print("mh_get_num_list(): Scanning %s ...\n", item->path);
 289
 290         *old_uids_valid = TRUE;
 291
 292         path = folder_item_get_path(item);
 293         g_return_val_if_fail(path != NULL, -1);
 294         if (change_dir(path) < 0) {
 295                 g_free(path);
 296                 return -1;
 297         }
 298         g_free(path);
 299
 300         if ((dp = opendir(".")) == NULL) {
 301                 FILE_OP_ERROR(item->path, "opendir");
 302                 return -1;
 303         }
 304
 305         while ((d = readdir(dp)) != NULL) {
 306                 if ((num = to_number(d->d_name)) > 0) {
 307                         *list = g_slist_prepend(*list, GINT_TO_POINTER(num));
 308                         nummsgs++;
 309                 }
 310         }
 311         closedir(dp);
 312
 313         item->mtime = time(NULL);
 314         return nummsgs;
 315 }
 316
 317 static gchar *mh_fetch_msg(Folder *folder, FolderItem *item, gint num)
 318 {
 319         gchar *path;
 320         gchar *file;
 321
 322         g_return_val_if_fail(item != NULL, NULL);
 323         g_return_val_if_fail(num > 0, NULL);
 324
 325         path = folder_item_get_path(item);
 326         file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 327
 328         if (!is_file_exist(file)) {
 329                 g_free(file);
 330                 g_free(path);
 331                 return NULL;
 332         }
 333         g_free(path);
 334         return file;
 335 }
 336
 337 static MsgInfo *mh_get_msginfo(Folder *folder, FolderItem *item, gint num)
 338 {
 339         MsgInfo *msginfo;
 340         gchar *file;
 341
 342         g_return_val_if_fail(item != NULL, NULL);
 343         if (num <= 0)
 344                 return NULL;
 345
 346         file = mh_fetch_msg(folder, item, num);
 347         if (!file) return NULL;
 348
 349         msginfo = mh_parse_msg(file, item);
 350         if (msginfo)
 351                 msginfo->msgnum = num;
 352
 353         g_free(file);
 354
 355         return msginfo;
 356 }
 357
 358 static gchar *mh_get_new_msg_filename(FolderItem *dest)
 359 {
 360         gchar *destfile;
 361         gchar *destpath;
 362
 363         destpath = folder_item_get_path(dest);
 364         g_return_val_if_fail(destpath != NULL, NULL);
 365
 366         if (!is_dir_exist(destpath))
 367                 make_dir_hier(destpath);
 368
 369         for (;;) {
 370                 destfile = g_strdup_printf("%s%c%d", destpath, G_DIR_SEPARATOR,
 371                                            dest->last_num + 1);
 372                 if (is_file_entry_exist(destfile)) {
 373                         dest->last_num++;
 374                         g_free(destfile);
 375                 } else
 376                         break;
 377         }
 378
 379         g_free(destpath);
 380
 381         return destfile;
 382 }
 383
 384 static gint mh_add_msg(Folder *folder, FolderItem *dest, const gchar *file, MsgFlags *flags)
 385 {
 386         gint ret;
 387         GSList file_list;
 388         MsgFileInfo fileinfo;
 389
 390         g_return_val_if_fail(file != NULL, -1);
 391
 392         fileinfo.msginfo = NULL;
 393         fileinfo.file = (gchar *)file;
 394         fileinfo.flags = flags;
 395         file_list.data = &fileinfo;
 396         file_list.next = NULL;
 397
 398         ret = mh_add_msgs(folder, dest, &file_list, NULL);
 399         return ret;
 400 }
 401
 402 static gint mh_add_msgs(Folder *folder, FolderItem *dest, GSList *file_list,
 403                  GRelation *relation)
 404 {
 405         gchar *destfile;
 406         GSList *cur;
 407         MsgFileInfo *fileinfo;
 408
 409         g_return_val_if_fail(dest != NULL, -1);
 410         g_return_val_if_fail(file_list != NULL, -1);
 411
 412         if (dest->last_num < 0) {
 413                 mh_get_last_num(folder, dest);
 414                 if (dest->last_num < 0) return -1;
 415         }
 416
 417         for (cur = file_list; cur != NULL; cur = cur->next) {
 418                 fileinfo = (MsgFileInfo *)cur->data;
 419
 420                 destfile = mh_get_new_msg_filename(dest);
 421                 if (destfile == NULL) return -1;
 422
 423 #ifdef G_OS_UNIX
 424                 if (link(fileinfo->file, destfile) < 0) {
 425 #endif
 426                         if (copy_file(fileinfo->file, destfile, TRUE) < 0) {
 427                                 g_warning(_("can't copy message %s to %s\n"),
 428                                           fileinfo->file, destfile);
 429                                 g_free(destfile);
 430                                 return -1;
 431                         }
 432 #ifdef G_OS_UNIX
 433                 }
 434 #endif
 435
 436                 if (relation != NULL)
 437                         g_relation_insert(relation, fileinfo, GINT_TO_POINTER(dest->last_num + 1));
 438                 g_free(destfile);
 439                 dest->last_num++;
 440         }
 441         mh_write_sequences(dest, TRUE);
 442         return dest->last_num;
 443 }
 444
 445 static gint mh_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 446 {
 447         GSList msglist;
 448
 449         g_return_val_if_fail(msginfo != NULL, -1);
 450
 451         msglist.data = msginfo;
 452         msglist.next = NULL;
 453
 454         return mh_copy_msgs(folder, dest, &msglist, NULL);
 455 }
 456
 457 static gint mh_copy_msgs(Folder *folder, FolderItem *dest, MsgInfoList *msglist,
 458                          GRelation *relation)
 459 {
 460         gboolean dest_need_scan = FALSE;
 461         gchar *srcfile;
 462         gchar *destfile;
 463         gint filemode = 0;
 464         FolderItemPrefs *prefs;
 465         MsgInfo *msginfo = NULL;
 466         MsgInfoList *cur = NULL;
 467         gint curnum = 0, total = 0;
 468         gchar *srcpath = NULL;
 469         gboolean full_fetch = FALSE;
 470         time_t last_mtime = (time_t)0;
 471
 472         g_return_val_if_fail(dest != NULL, -1);
 473         g_return_val_if_fail(msglist != NULL, -1);
 474
 475         msginfo = (MsgInfo *)msglist->data;
 476
 477         g_return_val_if_fail(msginfo != NULL, -1);
 478
 479         if (msginfo->folder == dest) {
 480                 g_warning("the src folder is identical to the dest.\n");
 481                 return -1;
 482         }
 483
 484         if (msginfo->folder->folder != dest->folder)
 485                 full_fetch = TRUE;
 486
 487         if (dest->last_num < 0) {
 488                 mh_get_last_num(folder, dest);
 489                 if (dest->last_num < 0) return -1;
 490         }
 491
 492         prefs = dest->prefs;
 493
 494         srcpath = folder_item_get_path(msginfo->folder);
 495
 496         dest_need_scan = mh_scan_required(dest->folder, dest);
 497         last_mtime = dest->mtime;
 498
 499         total = g_slist_length(msglist);
 500         if (total > 100) {
 501                 if (MSG_IS_MOVE(msginfo->flags))
 502                         statusbar_print_all(_("Moving messages..."));
 503                 else
 504                         statusbar_print_all(_("Copying messages..."));
 505         }
 506         for (cur = msglist; cur; cur = cur->next) {
 507                 msginfo = (MsgInfo *)cur->data;
 508                 if (!msginfo) {
 509                         goto err_reset_status;
 510                 }
 511                 if (!full_fetch) {
 512                         srcfile = g_strconcat(srcpath,
 513                                 G_DIR_SEPARATOR_S,
 514                                 itos(msginfo->msgnum), NULL);
 515                 } else {
 516                         srcfile = procmsg_get_message_file(msginfo);
 517                 }
 518                 if (!srcfile) {
 519                         goto err_reset_status;
 520                 }
 521                 destfile = mh_get_new_msg_filename(dest);
 522                 if (!destfile) {
 523                         g_free(srcfile);
 524                         goto err_reset_status;
 525                 }
 526
 527                 if (total > 100) {
 528                         statusbar_progress_all(curnum, total, 100);
 529                         if (curnum % 100 == 0)
 530                                 GTK_EVENTS_FLUSH();
 531                         curnum++;
 532                 }
 533
 534                 debug_print("Copying message %s%c%d to %s ...\n",
 535                             msginfo->folder->path, G_DIR_SEPARATOR,
 536                             msginfo->msgnum, dest->path);
 537
 538
 539                 if (MSG_IS_MOVE(msginfo->flags)) {
 540                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
 541                         if (move_file(srcfile, destfile, TRUE) < 0) {
 542                                 FILE_OP_ERROR(srcfile, "move");
 543                                 if (copy_file(srcfile, destfile, TRUE) < 0) {
 544                                         FILE_OP_ERROR(srcfile, "copy");
 545                                         g_free(srcfile);
 546                                         g_free(destfile);
 547                                         goto err_reset_status;
 548                                 }
 549                         } else {
 550                                 /* say unlinking's not necessary */
 551                                 msginfo->flags.tmp_flags |= MSG_MOVE_DONE;
 552                         }
 553                 } else if (copy_file(srcfile, destfile, TRUE) < 0) {
 554                         FILE_OP_ERROR(srcfile, "copy");
 555                         g_free(srcfile);
 556                         g_free(destfile);
 557                         goto err_reset_status;
 558                 }
 559                 if (prefs && prefs->enable_folder_chmod && prefs->folder_chmod) {
 560                         if (chmod(destfile, prefs->folder_chmod) < 0)
 561                                 FILE_OP_ERROR(destfile, "chmod");
 562
 563                         /* for mark file */
 564                         filemode = prefs->folder_chmod;
 565                         if (filemode & S_IRGRP) filemode |= S_IWGRP;
 566                         if (filemode & S_IROTH) filemode |= S_IWOTH;
 567                 }
 568                 if (relation)
 569                         g_relation_insert(relation, msginfo, GINT_TO_POINTER(dest->last_num+1));
 570                 g_free(srcfile);
 571                 g_free(destfile);
 572                 dest->last_num++;
 573         }
 574
 575         g_free(srcpath);
 576         mh_write_sequences(dest, TRUE);
 577
 578         if (dest->mtime == last_mtime && !dest_need_scan)
 579                 dest->mtime = time(NULL);
 580
 581         if (total > 100) {
 582                 statusbar_progress_all(0,0,0);
 583                 statusbar_pop_all();
 584         }
 585         return dest->last_num;
 586 err_reset_status:
 587         g_free(srcpath);
 588         mh_write_sequences(dest, TRUE);
 589         if (total > 100) {
 590                 statusbar_progress_all(0,0,0);
 591                 statusbar_pop_all();
 592         }
 593         return -1;
 594
 595 }
 596
 597 static gint mh_remove_msg(Folder *folder, FolderItem *item, gint num)
 598 {
 599         gboolean need_scan = FALSE;
 600         time_t last_mtime = (time_t)0;
 601         gchar *file;
 602
 603         g_return_val_if_fail(item != NULL, -1);
 604
 605         file = mh_fetch_msg(folder, item, num);
 606         g_return_val_if_fail(file != NULL, -1);
 607
 608         need_scan = mh_scan_required(folder, item);
 609         last_mtime = item->mtime;
 610
 611         if (g_unlink(file) < 0) {
 612                 FILE_OP_ERROR(file, "unlink");
 613                 g_free(file);
 614                 return -1;
 615         }
 616
 617         if (item->mtime == last_mtime && !need_scan)
 618                 item->mtime = time(NULL);
 619
 620         g_free(file);
 621         return 0;
 622 }
 623
 624 static gint mh_remove_msgs(Folder *folder, FolderItem *item,
 625                     MsgInfoList *msglist, GRelation *relation)
 626 {
 627         gboolean need_scan = FALSE;
 628         gchar *path, *file;
 629         time_t last_mtime = (time_t)0;
 630         MsgInfoList *cur;
 631         gint total = 0, curnum = 0;
 632
 633         g_return_val_if_fail(item != NULL, -1);
 634
 635         path = folder_item_get_path(item);
 636
 637         need_scan = mh_scan_required(folder, item);
 638         last_mtime = item->mtime;
 639
 640         total = g_slist_length(msglist);
 641         if (total > 100) {
 642                 statusbar_print_all(_("Deleting messages..."));
 643         }
 644
 645         for (cur = msglist; cur; cur = cur->next) {
 646                 MsgInfo *msginfo = (MsgInfo *)cur->data;
 647                 if (msginfo == NULL)
 648                         continue;
 649                 if (MSG_IS_MOVE(msginfo->flags) && MSG_IS_MOVE_DONE(msginfo->flags)) {
 650                         msginfo->flags.tmp_flags &= ~MSG_MOVE_DONE;
 651                         continue;
 652                 }
 653                 if (total > 100) {
 654                         statusbar_progress_all(curnum, total, 100);
 655                         if (curnum % 100 == 0)
 656                                 GTK_EVENTS_FLUSH();
 657                         curnum++;
 658                 }
 659                 file = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msginfo->msgnum), NULL);
 660                 if (file == NULL)
 661                         continue;
 662
 663                 if (g_unlink(file) < 0) {
 664                         g_free(file);
 665                         continue;
 666                 }
 667
 668                 g_free(file);
 669         }
 670
 671         if (total > 100) {
 672                 statusbar_progress_all(0,0,0);
 673                 statusbar_pop_all();
 674         }
 675         if (item->mtime == last_mtime && !need_scan)
 676                 item->mtime = time(NULL);
 677
 678         g_free(path);
 679         return 0;
 680 }
 681
 682 static gint mh_remove_all_msg(Folder *folder, FolderItem *item)
 683 {
 684         gchar *path;
 685         gint val;
 686
 687         g_return_val_if_fail(item != NULL, -1);
 688
 689         path = folder_item_get_path(item);
 690         g_return_val_if_fail(path != NULL, -1);
 691         val = remove_all_numbered_files(path);
 692         g_free(path);
 693
 694         mh_write_sequences(item, TRUE);
 695
 696         return val;
 697 }
 698
 699 static gboolean mh_is_msg_changed(Folder *folder, FolderItem *item,
 700                                   MsgInfo *msginfo)
 701 {
 702         struct stat s;
 703
 704         if (g_stat(itos(msginfo->msgnum), &s) < 0 ||
 705             msginfo->size  != s.st_size || (
 706                 (msginfo->mtime - s.st_mtime != 0) &&
 707                 (msginfo->mtime - s.st_mtime != 3600) &&
 708                 (msginfo->mtime - s.st_mtime != -3600)))
 709                 return TRUE;
 710
 711         return FALSE;
 712 }
 713
 714 static gint mh_scan_tree(Folder *folder)
 715 {
 716         FolderItem *item;
 717         gchar *rootpath;
 718
 719         g_return_val_if_fail(folder != NULL, -1);
 720
 721         if (!folder->node) {
 722                 item = folder_item_new(folder, folder->name, NULL);
 723                 item->folder = folder;
 724                 folder->node = item->node = g_node_new(item);
 725         } else
 726                 item = FOLDER_ITEM(folder->node->data);
 727
 728         rootpath = folder_item_get_path(item);
 729         if (change_dir(rootpath) < 0) {
 730                 g_free(rootpath);
 731                 return -1;
 732         }
 733         g_free(rootpath);
 734
 735         mh_create_tree(folder);
 736         mh_remove_missing_folder_items(folder);
 737         mh_scan_tree_recursive(item);
 738
 739         return 0;
 740 }
 741
 742 #define MAKE_DIR_IF_NOT_EXIST(dir) \
 743 { \
 744         if (!is_dir_exist(dir)) { \
 745                 if (is_file_exist(dir)) { \
 746                         g_warning("File `%s' already exists.\n" \
 747                                     "Can't create folder.", dir); \
 748                         return -1; \
 749                 } \
 750                 if (make_dir(dir) < 0) \
 751                         return -1; \
 752         } \
 753 }
 754
 755 static gint mh_create_tree(Folder *folder)
 756 {
 757         gchar *rootpath;
 758
 759         g_return_val_if_fail(folder != NULL, -1);
 760
 761         CHDIR_RETURN_VAL_IF_FAIL(get_mail_base_dir(), -1);
 762         rootpath = LOCAL_FOLDER(folder)->rootpath;
 763         MAKE_DIR_IF_NOT_EXIST(rootpath);
 764         CHDIR_RETURN_VAL_IF_FAIL(rootpath, -1);
 765         MAKE_DIR_IF_NOT_EXIST(INBOX_DIR);
 766         MAKE_DIR_IF_NOT_EXIST(OUTBOX_DIR);
 767         MAKE_DIR_IF_NOT_EXIST(QUEUE_DIR);
 768         MAKE_DIR_IF_NOT_EXIST(DRAFT_DIR);
 769         MAKE_DIR_IF_NOT_EXIST(TRASH_DIR);
 770
 771         return 0;
 772 }
 773
 774 #undef MAKE_DIR_IF_NOT_EXIST
 775
 776 static gchar *mh_item_get_path(Folder *folder, FolderItem *item)
 777 {
 778         gchar *folder_path, *path;
 779         gchar *real_path;
 780         g_return_val_if_fail(folder != NULL, NULL);
 781         g_return_val_if_fail(item != NULL, NULL);
 782
 783         folder_path = g_strdup(LOCAL_FOLDER(folder)->rootpath);
 784         g_return_val_if_fail(folder_path != NULL, NULL);
 785
 786         /* FIXME: [W32] The code below does not correctly merge
 787            relative filenames; there should be a function to handle
 788            this.  */
 789         if ( !is_relative_filename (folder_path) ) {
 790                 if (item->path)
 791                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 792                                            item->path, NULL);
 793                 else
 794                         path = g_strdup(folder_path);
 795         } else {
 796                 if (item->path)
 797                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 798                                            folder_path, G_DIR_SEPARATOR_S,
 799                                            item->path, NULL);
 800                 else
 801                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 802                                            folder_path, NULL);
 803         }
 804         g_free(folder_path);
 805         real_path = mh_filename_from_utf8(path);
 806         if (!is_dir_exist(real_path) && is_dir_exist(path)) {
 807                 /* mmh, older version did put utf8 filenames instead of
 808                  * the correct encoding */
 809                 rename(path, real_path);
 810                 folder_item_scan(item);
 811         }
 812
 813         g_free(path);
 814         return real_path;
 815 }
 816
 817 static FolderItem *mh_create_folder(Folder *folder, FolderItem *parent,
 818                                     const gchar *name)
 819 {
 820         gchar *path, *real_name;
 821         gchar *fullpath;
 822         FolderItem *new_item;
 823         gchar *mh_sequences_filename;
 824         FILE *mh_sequences_file;
 825
 826         g_return_val_if_fail(folder != NULL, NULL);
 827         g_return_val_if_fail(parent != NULL, NULL);
 828         g_return_val_if_fail(name != NULL, NULL);
 829
 830         path = folder_item_get_path(parent);
 831         if (!is_dir_exist(path))
 832                 if (make_dir_hier(path) != 0)
 833                         return NULL;
 834
 835         real_name = mh_filename_from_utf8(name);
 836         fullpath = g_strconcat(path, G_DIR_SEPARATOR_S, real_name, NULL);
 837         g_free(real_name);
 838         g_free(path);
 839
 840         if (make_dir(fullpath) < 0) {
 841                 g_free(fullpath);
 842                 return NULL;
 843         }
 844
 845         g_free(fullpath);
 846
 847         if (parent->path)
 848                 path = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
 849                                    NULL);
 850         else
 851                 path = g_strdup(name);
 852         new_item = folder_item_new(folder, name, path);
 853         folder_item_append(parent, new_item);
 854
 855         g_free(path);
 856
 857         path = folder_item_get_path(new_item);
 858         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
 859                                             ".mh_sequences", NULL);
 860         if ((mh_sequences_file = g_fopen(mh_sequences_filename, "a+b")) != NULL) {
 861                 fclose(mh_sequences_file);
 862         }
 863         g_free(mh_sequences_filename);
 864         g_free(path);
 865
 866         return new_item;
 867 }
 868
 869 static gint mh_rename_folder(Folder *folder, FolderItem *item,
 870                              const gchar *name)
 871 {
 872         gchar *real_name;
 873         gchar *oldpath;
 874         gchar *dirname;
 875         gchar *newpath, *utf8newpath;
 876         gchar *paths[2];
 877
 878         g_return_val_if_fail(folder != NULL, -1);
 879         g_return_val_if_fail(item != NULL, -1);
 880         g_return_val_if_fail(item->path != NULL, -1);
 881         g_return_val_if_fail(name != NULL, -1);
 882
 883         oldpath = folder_item_get_path(item);
 884         if (!is_dir_exist(oldpath))
 885                 make_dir_hier(oldpath);
 886
 887         dirname = g_path_get_dirname(oldpath);
 888         real_name = mh_filename_from_utf8(name);
 889         newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S, real_name, NULL);
 890         g_free(real_name);
 891
 892         if (g_rename(oldpath, newpath) < 0) {
 893                 FILE_OP_ERROR(oldpath, "rename");
 894                 g_free(oldpath);
 895                 g_free(newpath);
 896                 return -1;
 897         }
 898
 899         g_free(oldpath);
 900         g_free(newpath);
 901
 902         if (strchr(item->path, G_DIR_SEPARATOR) != NULL) {
 903                 dirname = g_path_get_dirname(item->path);
 904                 utf8newpath = g_strconcat(dirname, G_DIR_SEPARATOR_S,
 905                                           name, NULL);
 906                 g_free(dirname);
 907         } else
 908                 utf8newpath = g_strdup(name);
 909
 910         g_free(item->name);
 911         item->name = g_strdup(name);
 912
 913         paths[0] = g_strdup(item->path);
 914         paths[1] = utf8newpath;
 915         g_node_traverse(item->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 916                         mh_rename_folder_func, paths);
 917
 918         g_free(paths[0]);
 919         g_free(paths[1]);
 920         return 0;
 921 }
 922
 923 static gint mh_remove_folder(Folder *folder, FolderItem *item)
 924 {
 925         gchar *path;
 926
 927         g_return_val_if_fail(folder != NULL, -1);
 928         g_return_val_if_fail(item != NULL, -1);
 929         g_return_val_if_fail(item->path != NULL, -1);
 930
 931         path = folder_item_get_path(item);
 932         if (remove_dir_recursive(path) < 0) {
 933                 g_warning("can't remove directory `%s'\n", path);
 934                 g_free(path);
 935                 return -1;
 936         }
 937
 938         g_free(path);
 939         folder_item_remove(item);
 940         return 0;
 941 }
 942
 943 static MsgInfo *mh_parse_msg(const gchar *file, FolderItem *item)
 944 {
 945         MsgInfo *msginfo;
 946         MsgFlags flags;
 947
 948         g_return_val_if_fail(item != NULL, NULL);
 949         g_return_val_if_fail(file != NULL, NULL);
 950
 951         flags.perm_flags = MSG_NEW|MSG_UNREAD;
 952         flags.tmp_flags = 0;
 953
 954         if (folder_has_parent_of_type(item, F_QUEUE)) {
 955                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
 956         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
 957                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
 958         }
 959
 960         msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
 961         if (!msginfo) return NULL;
 962
 963         msginfo->msgnum = atoi(file);
 964         msginfo->folder = item;
 965
 966         return msginfo;
 967 }
 968
 969 static gboolean mh_remove_missing_folder_items_func(GNode *node, gpointer data)
 970 {
 971         FolderItem *item;
 972         gchar *path;
 973
 974         g_return_val_if_fail(node->data != NULL, FALSE);
 975
 976         if (G_NODE_IS_ROOT(node))
 977                 return FALSE;
 978
 979         item = FOLDER_ITEM(node->data);
 980
 981         path = folder_item_get_path(item);
 982         if (!is_dir_exist(path)) {
 983                 debug_print("folder '%s' not found. removing...\n", path);
 984                 folder_item_remove(item);
 985         }
 986         g_free(path);
 987
 988         return FALSE;
 989 }
 990
 991 static void mh_remove_missing_folder_items(Folder *folder)
 992 {
 993         g_return_if_fail(folder != NULL);
 994
 995         debug_print("searching missing folders...\n");
 996
 997         g_node_traverse(folder->node, G_POST_ORDER, G_TRAVERSE_ALL, -1,
 998                         mh_remove_missing_folder_items_func, folder);
 999 }
1000
1001 static void mh_scan_tree_recursive(FolderItem *item)
1002 {
1003         Folder *folder;
1004 #ifdef G_OS_WIN32
1005         GDir *dir;
1006 #else
1007         DIR *dp;
1008         struct dirent *d;
1009 #endif
1010         const gchar *dir_name;
1011         struct stat s;
1012         gchar *real_path, *entry, *utf8entry, *utf8name;
1013         gint n_msg = 0;
1014
1015         g_return_if_fail(item != NULL);
1016         g_return_if_fail(item->folder != NULL);
1017
1018         folder = item->folder;
1019
1020         real_path = item->path ? mh_filename_from_utf8(item->path) : g_strdup(".");
1021 #ifdef G_OS_WIN32
1022         dir = g_dir_open(real_path, 0, NULL);
1023         if (!dir) {
1024                 g_warning("failed to open directory: %s\n", real_path);
1025                 g_free(real_path);
1026                 return;
1027         }
1028 #else
1029         dp = opendir(real_path);
1030         if (!dp) {
1031                 FILE_OP_ERROR(real_path, "opendir");
1032                 return;
1033         }
1034 #endif
1035         g_free(real_path);
1036
1037         debug_print("scanning %s ...\n",
1038                     item->path ? item->path
1039                     : LOCAL_FOLDER(item->folder)->rootpath);
1040         if (folder->ui_func)
1041                 folder->ui_func(folder, item, folder->ui_func_data);
1042
1043 #ifdef G_OS_WIN32
1044         while ((dir_name = g_dir_read_name(dir)) != NULL) {
1045 #else
1046         while ((d = readdir(dp)) != NULL) {
1047                 dir_name = d->d_name;
1048 #endif
1049                 if (dir_name[0] == '.') continue;
1050
1051                 utf8name = mh_filename_to_utf8(dir_name);
1052                 if (item->path)
1053                         utf8entry = g_strconcat(item->path, G_DIR_SEPARATOR_S,
1054                                                 utf8name, NULL);
1055                 else
1056                         utf8entry = g_strdup(utf8name);
1057                 entry = mh_filename_from_utf8(utf8entry);
1058
1059                 if (
1060 #if !defined(G_OS_WIN32) && defined(HAVE_DIRENT_D_TYPE)
1061                         d->d_type == DT_DIR ||
1062                         (d->d_type == DT_UNKNOWN &&
1063 #endif
1064                         g_stat(entry, &s) == 0 && S_ISDIR(s.st_mode)
1065 #if !defined(G_OS_WIN32) && defined(HAVE_DIRENT_D_TYPE)
1066                         )
1067 #endif
1068                    ) {
1069                         FolderItem *new_item = NULL;
1070                         GNode *node;
1071
1072                         node = item->node;
1073                         for (node = node->children; node != NULL; node = node->next) {
1074                                 FolderItem *cur_item = FOLDER_ITEM(node->data);
1075                                 if (!strcmp2(cur_item->path, entry)) {
1076                                         new_item = cur_item;
1077                                         break;
1078                                 }
1079                         }
1080                         if (!new_item) {
1081                                 debug_print("new folder '%s' found.\n", entry);
1082                                 new_item = folder_item_new(folder, utf8name, utf8entry);
1083                                 folder_item_append(item, new_item);
1084                         }
1085
1086                         if (!item->path) {
1087                                 if (!folder->inbox &&
1088                                     !strcmp(dir_name, INBOX_DIR)) {
1089                                         new_item->stype = F_INBOX;
1090                                         folder->inbox = new_item;
1091                                 } else if (!folder->outbox &&
1092                                            !strcmp(dir_name, OUTBOX_DIR)) {
1093                                         new_item->stype = F_OUTBOX;
1094                                         folder->outbox = new_item;
1095                                 } else if (!folder->draft &&
1096                                            !strcmp(dir_name, DRAFT_DIR)) {
1097                                         new_item->stype = F_DRAFT;
1098                                         folder->draft = new_item;
1099                                 } else if (!folder->queue &&
1100                                            !strcmp(dir_name, QUEUE_DIR)) {
1101                                         new_item->stype = F_QUEUE;
1102                                         folder->queue = new_item;
1103                                 } else if (!folder->trash &&
1104                                            !strcmp(dir_name, TRASH_DIR)) {
1105                                         new_item->stype = F_TRASH;
1106                                         folder->trash = new_item;
1107                                 }
1108                         }
1109
1110                         mh_scan_tree_recursive(new_item);
1111                 } else if (to_number(dir_name) > 0) n_msg++;
1112
1113                 g_free(entry);
1114                 g_free(utf8entry);
1115                 g_free(utf8name);
1116         }
1117
1118 #ifdef G_OS_WIN32
1119         g_dir_close(dir);
1120 #else
1121         closedir(dp);
1122 #endif
1123
1124         item->mtime = time(NULL);
1125 }
1126
1127 static gboolean mh_rename_folder_func(GNode *node, gpointer data)
1128 {
1129         FolderItem *item = node->data;
1130         gchar **paths = data;
1131         const gchar *oldpath = paths[0];
1132         const gchar *newpath = paths[1];
1133         gchar *base;
1134         gchar *new_itempath;
1135         gint oldpathlen;
1136
1137         oldpathlen = strlen(oldpath);
1138         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
1139                 g_warning("path doesn't match: %s, %s\n", oldpath, item->path);
1140                 return TRUE;
1141         }
1142
1143         base = item->path + oldpathlen;
1144         while (*base == G_DIR_SEPARATOR) base++;
1145         if (*base == '\0')
1146                 new_itempath = g_strdup(newpath);
1147         else
1148                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
1149                                            NULL);
1150         g_free(item->path);
1151         item->path = new_itempath;
1152
1153         return FALSE;
1154 }
1155
1156 static gchar *mh_filename_from_utf8(const gchar *path)
1157 {
1158         gchar *real_path = g_filename_from_utf8(path, -1, NULL, NULL, NULL);
1159
1160         if (!real_path) {
1161                 g_warning("mh_filename_from_utf8: faild to convert character set\n");
1162                 real_path = g_strdup(path);
1163         }
1164
1165         return real_path;
1166 }
1167
1168 static gchar *mh_filename_to_utf8(const gchar *path)
1169 {
1170         gchar *utf8path = g_filename_to_utf8(path, -1, NULL, NULL, NULL);
1171         if (!utf8path) {
1172                 g_warning("mh_filename_to_utf8: faild to convert character set\n");
1173                 utf8path = g_strdup(path);
1174         }
1175
1176         return utf8path;
1177 }
1178
1179 static gint sort_cache_list_by_msgnum(gconstpointer a, gconstpointer b)
1180 {
1181         MsgInfo *msginfo_a = (MsgInfo *) a;
1182         MsgInfo *msginfo_b = (MsgInfo *) b;
1183
1184         return (msginfo_a->msgnum - msginfo_b->msgnum);
1185 }
1186
1187 static gchar *get_unseen_seq_name(void)
1188 {
1189         static gchar *seq_name = NULL;
1190         if (!seq_name) {
1191                 gchar buf[BUFFSIZE];
1192                 gchar *tmp;
1193                 gchar *profile_path = g_strconcat(
1194                         get_home_dir(), G_DIR_SEPARATOR_S,
1195                         ".mh_profile", NULL);
1196                 FILE *fp = g_fopen(profile_path, "r");
1197                 if (fp) {
1198                         while (fgets(buf, sizeof(buf), fp) != NULL) {
1199                                 if (!strncmp(buf, "Unseen-Sequence:", strlen("Unseen-Sequence:"))) {
1200                                         gchar *seq_tmp = buf+strlen("Unseen-Sequence:");
1201                                         while (*seq_tmp == ' ')
1202                                                 seq_tmp++;
1203                                         seq_name = g_strdup(seq_tmp);
1204                                         seq_name = strretchomp(seq_name);
1205                                         break;
1206                                 }
1207                         }
1208                         fclose(fp);
1209                 }
1210                 if (!seq_name)
1211                         seq_name = g_strdup("unseen");
1212                 tmp = g_strdup_printf("%s:", seq_name);
1213                 g_free(seq_name);
1214                 seq_name = tmp;
1215         }
1216         return seq_name;
1217 }
1218
1219 #if 0
1220 static gint mh_get_flags(Folder *folder, FolderItem *item,
1221                            MsgInfoList *msginfo_list, GRelation *msgflags)
1222 {
1223         gchar *mh_sequences_filename;
1224         FILE *mh_sequences_file;
1225         gchar buf[BUFFSIZE];
1226         gchar *unseen_list = NULL;
1227         gchar *path;
1228         MsgInfoList *mcur = NULL;
1229 /*
1230         GTimer *timer = g_timer_new();
1231         g_timer_start(timer);
1232 */
1233         if (!item)
1234                 return 0;
1235
1236         /* don't update from .mh_sequences if the item's opened: mails may have
1237          * been marked read/unread and it's not yet written in the file. */
1238         if (item->opened)
1239                 return 0;
1240
1241         path = folder_item_get_path(item);
1242
1243         mh_sequences_filename = g_strconcat(path, G_DIR_SEPARATOR_S,
1244                                             ".mh_sequences", NULL);
1245         g_free(path);
1246         if ((mh_sequences_file = g_fopen(mh_sequences_filename, "r+b")) != NULL) {
1247                 while (fgets(buf, sizeof(buf), mh_sequences_file) != NULL) {
1248                         if (!strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name()))) {
1249                                 unseen_list = g_strdup(buf+strlen(get_unseen_seq_name()));
1250                                 break;
1251                         }
1252                 }
1253                 fclose(mh_sequences_file);
1254         }
1255
1256         g_free(mh_sequences_filename);
1257
1258         if (unseen_list) {
1259                 gchar *cur = NULL;
1260                 gchar *token = NULL, *next = NULL, *boundary = NULL;
1261                 gint num = 0;
1262                 GHashTable *unseen_table = g_hash_table_new(g_direct_hash, g_direct_equal);
1263
1264                 cur = unseen_list = strretchomp(unseen_list);
1265                 debug_print("found unseen list in .mh_sequences: %s\n", unseen_list);
1266 next_token:
1267                 while (*cur && *cur == ' ')
1268                         cur++;
1269
1270                 if ((next = strchr(cur, ' ')) != NULL) {
1271                         token = cur;
1272                         cur = next+1;
1273                         *next = '\0';
1274                 } else {
1275                         token = cur;
1276                         cur = NULL;
1277                 }
1278
1279                 if ((boundary = strchr(token, '-')) != NULL) {
1280                         gchar *start, *end;
1281                         int i;
1282                         start = token;
1283                         end = boundary+1;
1284                         *boundary='\0';
1285                         for (i = atoi(start); i <= atoi(end); i++) {
1286                                 g_hash_table_insert(unseen_table, GINT_TO_POINTER(i), GINT_TO_POINTER(1));
1287                         }
1288                 } else if ((num = atoi(token)) > 0) {
1289                         g_hash_table_insert(unseen_table, GINT_TO_POINTER(num), GINT_TO_POINTER(1));
1290                 }
1291
1292                 if (cur)
1293                         goto next_token;
1294                 for (mcur = msginfo_list; mcur; mcur = mcur->next) {
1295                         MsgInfo *msginfo = (MsgInfo *)mcur->data;
1296                         MsgPermFlags flags = msginfo->flags.perm_flags;
1297                         if (g_hash_table_lookup(unseen_table, GINT_TO_POINTER(msginfo->msgnum))) {
1298                                 flags |= MSG_UNREAD;
1299                         } else if (!(flags & MSG_NEW)) { /* don't mark new msgs as read */
1300                                 flags &= ~(MSG_UNREAD);
1301                         }
1302                         if (flags != msginfo->flags.perm_flags)
1303                                 g_relation_insert(msgflags, msginfo, GINT_TO_POINTER(flags));
1304                 }
1305                 g_hash_table_destroy(unseen_table);
1306                 g_free(unseen_list);
1307         }
1308 /*
1309         g_timer_stop(timer);
1310         printf("mh_get_flags: %f secs\n", g_timer_elapsed(timer, NULL));
1311         g_timer_destroy(timer);
1312 */
1313         return 0;
1314 }
1315 #endif
1316
1317 static void mh_write_sequences(FolderItem *item, gboolean remove_unseen)
1318 {
1319         gchar *mh_sequences_old, *mh_sequences_new;
1320         FILE *mh_sequences_old_fp, *mh_sequences_new_fp;
1321         gchar buf[BUFFSIZE];
1322         gchar *path = NULL;
1323 /*
1324         GTimer *timer = g_timer_new();
1325         g_timer_start(timer);
1326 */
1327         if (!item)
1328                 return;
1329
1330         path = folder_item_get_path(item);
1331
1332         mh_sequences_old = g_strconcat(path, G_DIR_SEPARATOR_S,
1333                                             ".mh_sequences", NULL);
1334         mh_sequences_new = g_strconcat(path, G_DIR_SEPARATOR_S,
1335                                             ".mh_sequences.new", NULL);
1336         if ((mh_sequences_new_fp = g_fopen(mh_sequences_new, "w+b")) != NULL) {
1337                 GSList *msglist = folder_item_get_msg_list(item);
1338                 GSList *cur;
1339                 MsgInfo *info = NULL;
1340                 gint start = -1, end = -1;
1341                 gchar *sequence = g_strdup("");
1342                 msglist = g_slist_sort(msglist, sort_cache_list_by_msgnum);
1343                 cur = msglist;
1344
1345                 /* write the unseen sequence if we don't have to scrap it */
1346                 if (!remove_unseen) do {
1347                         info = (MsgInfo *)(cur ? cur->data:NULL);
1348                         if (info && (MSG_IS_UNREAD(info->flags) || MSG_IS_NEW(info->flags))) {
1349                                 if (start < 0)
1350                                         start = end = info->msgnum;
1351                                 else
1352                                         end = info->msgnum;
1353                         } else {
1354                                 if (start > 0 && end > 0) {
1355                                         gchar *tmp = sequence;
1356                                         if (start != end)
1357                                                 sequence = g_strdup_printf("%s %d-%d ", tmp, start, end);
1358                                         else
1359                                                 sequence = g_strdup_printf("%s %d ", tmp, start);
1360                                         g_free(tmp);
1361                                         start = end = -1;
1362                                 }
1363                         }
1364                         cur = cur ? cur->next:NULL;
1365                 } while (cur || (start > 0 && end > 0));
1366                 if (sequence && strlen(sequence)) {
1367                         fprintf(mh_sequences_new_fp, "%s%s\n",
1368                                         get_unseen_seq_name(), sequence);
1369                         debug_print("wrote unseen sequence: '%s%s'\n",
1370                                         get_unseen_seq_name(), sequence);
1371                 }
1372                 /* rewrite the rest of the file */
1373                 if ((mh_sequences_old_fp = g_fopen(mh_sequences_old, "r+b")) != NULL) {
1374                         while (fgets(buf, sizeof(buf), mh_sequences_old_fp) != NULL) {
1375                                 if (strncmp(buf, get_unseen_seq_name(), strlen(get_unseen_seq_name())))
1376                                         fprintf(mh_sequences_new_fp, "%s", buf);
1377                         }
1378                         fclose(mh_sequences_old_fp);
1379                 }
1380
1381                 fclose(mh_sequences_new_fp);
1382                 g_rename(mh_sequences_new, mh_sequences_old);
1383                 g_free(sequence);
1384                 procmsg_msg_list_free(msglist);
1385         }
1386         g_free(mh_sequences_old);
1387         g_free(mh_sequences_new);
1388         g_free(path);
1389 /*
1390         g_timer_stop(timer);
1391         printf("mh_get_flags: %f secs\n", g_timer_elapsed(timer, NULL));
1392         g_timer_destroy(timer);
1393 */
1394 }
1395
1396 static int mh_item_close(Folder *folder, FolderItem *item)
1397 {
1398         mh_write_sequences(item, FALSE);
1399         return 0;
1400 }