backend/djvu/djvu-document.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /*
   3  * Copyright (C) 2005, Nickolay V. Shmyrev <nshmyrev@yandex.ru>
   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, or (at your option)
   8  * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "config.h"
  21
  22 #include <config.h>
  23 #include "djvu-document.h"
  24 #include "djvu-text.h"
  25 #include "djvu-links.h"
  26 #include "djvu-document-private.h"
  27 #include "ev-document-thumbnails.h"
  28 #include "ev-file-exporter.h"
  29 #include "ev-document-misc.h"
  30 #include "ev-document-find.h"
  31 #include "ev-document-links.h"
  32 #include "ev-selection.h"
  33 #include "ev-file-helpers.h"
  34
  35 #include <gdk-pixbuf/gdk-pixbuf-core.h>
  36 #include <glib/gi18n.h>
  37 #include <glib/gunicode.h>
  38 #include <string.h>
  39
  40 #define SCALE_FACTOR 0.2
  41
  42 enum {
  43         PROP_0,
  44         PROP_TITLE
  45 };
  46
  47 struct _DjvuDocumentClass
  48 {
  49         GObjectClass parent_class;
  50 };
  51
  52 typedef struct _DjvuDocumentClass DjvuDocumentClass;
  53
  54 static void djvu_document_document_iface_init (EvDocumentIface *iface);
  55 static void djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
  56 static void djvu_document_file_exporter_iface_init (EvFileExporterIface *iface);
  57 static void djvu_document_find_iface_init (EvDocumentFindIface *iface);
  58 static void djvu_document_document_links_iface_init  (EvDocumentLinksIface *iface);
  59 static void djvu_selection_iface_init (EvSelectionIface *iface);
  60
  61 EV_BACKEND_REGISTER_WITH_CODE (DjvuDocument, djvu_document,
  62     {
  63       G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, djvu_document_document_thumbnails_iface_init);
  64       G_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER, djvu_document_file_exporter_iface_init);
  65       G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND, djvu_document_find_iface_init);
  66       G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS, djvu_document_document_links_iface_init);
  67       G_IMPLEMENT_INTERFACE (EV_TYPE_SELECTION, djvu_selection_iface_init);
  68      });
  69
  70
  71 void
  72 djvu_handle_events (DjvuDocument *djvu_document, int wait)
  73 {
  74         ddjvu_context_t *ctx = djvu_document->d_context;
  75         const ddjvu_message_t *msg;
  76
  77         if (!ctx)
  78                 return;
  79
  80         if (wait)
  81                 msg = ddjvu_message_wait (ctx);
  82
  83         while ((msg = ddjvu_message_peek (ctx))) {
  84                 switch (msg->m_any.tag) {
  85                         case DDJVU_ERROR:
  86                                 g_warning ("DjvuLibre error: %s",
  87                                            msg->m_error.message);
  88                                 if (msg->m_error.filename)
  89                                         g_warning ("DjvuLibre error: %s:%d",
  90                                                    msg->m_error.filename,
  91                                                    msg->m_error.lineno);
  92                                 break;
  93                         default:
  94                                 break;
  95                 }
  96                 ddjvu_message_pop (ctx);
  97         }
  98 }
  99
 100 static gboolean
 101 djvu_document_load (EvDocument  *document,
 102                     const char  *uri,
 103                     GError     **error)
 104 {
 105         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 106         ddjvu_document_t *doc;
 107         gchar *filename;
 108         gboolean missing_files = FALSE;
 109
 110         /* FIXME: We could actually load uris  */
 111         filename = g_filename_from_uri (uri, NULL, error);
 112         if (!filename)
 113                 return FALSE;
 114
 115         doc = ddjvu_document_create_by_filename (djvu_document->d_context, filename, TRUE);
 116
 117         if (!doc) {
 118                 g_free (filename);
 119                 return FALSE;
 120         }
 121
 122         if (djvu_document->d_document)
 123             ddjvu_document_release (djvu_document->d_document);
 124
 125         djvu_document->d_document = doc;
 126
 127         while (!ddjvu_document_decoding_done (djvu_document->d_document))
 128                 djvu_handle_events (djvu_document, TRUE);
 129         g_free (djvu_document->uri);
 130         djvu_document->uri = g_strdup (uri);
 131
 132         if (ddjvu_document_get_type (djvu_document->d_document) == DDJVU_DOCTYPE_INDIRECT) {
 133                 gint n_files;
 134                 gint i;
 135                 gchar *base;
 136
 137                 base = g_path_get_dirname (filename);
 138
 139                 n_files = ddjvu_document_get_filenum (djvu_document->d_document);
 140                 for (i = 0; i < n_files; i++) {
 141                         struct ddjvu_fileinfo_s fileinfo;
 142                         gchar *file;
 143
 144                         ddjvu_document_get_fileinfo (djvu_document->d_document,
 145                                                      i, &fileinfo);
 146
 147                         if (fileinfo.type != 'P')
 148                                 continue;
 149
 150                         file = g_build_filename (base, fileinfo.id, NULL);
 151                         if (!g_file_test (file, G_FILE_TEST_EXISTS)) {
 152                                 missing_files = TRUE;
 153                                 g_free (file);
 154
 155                                 break;
 156                         }
 157                         g_free (file);
 158                 }
 159                 g_free (base);
 160         }
 161         g_free (filename);
 162
 163         if (missing_files) {
 164                 g_set_error (error,
 165                              G_FILE_ERROR,
 166                              G_FILE_ERROR_EXIST,
 167                              _("The document is composed by several files. "
 168                                "One or more of such files cannot be accessed."));
 169
 170                 return FALSE;
 171         }
 172
 173         return TRUE;
 174 }
 175
 176
 177 static gboolean
 178 djvu_document_save (EvDocument  *document,
 179                     const char  *uri,
 180                     GError     **error)
 181 {
 182         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 183
 184         return ev_xfer_uri_simple (djvu_document->uri, uri, error);
 185 }
 186
 187 int
 188 djvu_document_get_n_pages (EvDocument  *document)
 189 {
 190         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 191
 192         g_return_val_if_fail (djvu_document->d_document, 0);
 193
 194         return ddjvu_document_get_pagenum (djvu_document->d_document);
 195 }
 196
 197 static void
 198 djvu_document_get_page_size (EvDocument   *document,
 199                              int           page,
 200                              double       *width,
 201                              double       *height)
 202 {
 203         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 204         ddjvu_pageinfo_t info;
 205         ddjvu_status_t r;
 206
 207         g_return_if_fail (djvu_document->d_document);
 208
 209         while ((r = ddjvu_document_get_pageinfo(djvu_document->d_document, page, &info)) < DDJVU_JOB_OK)
 210                 djvu_handle_events(djvu_document, TRUE);
 211
 212         if (r >= DDJVU_JOB_FAILED)
 213                 djvu_handle_events(djvu_document, TRUE);
 214
 215         *width = info.width * SCALE_FACTOR;
 216         *height = info.height * SCALE_FACTOR;
 217 }
 218
 219 static cairo_surface_t *
 220 djvu_document_render (EvDocument      *document,
 221                       EvRenderContext *rc)
 222 {
 223         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 224         cairo_surface_t *surface;
 225         gchar *pixels;
 226         gint   rowstride;
 227         ddjvu_rect_t rrect;
 228         ddjvu_rect_t prect;
 229         ddjvu_page_t *d_page;
 230         ddjvu_page_rotation_t rotation;
 231         double page_width, page_height, tmp;
 232         static const cairo_user_data_key_t key;
 233
 234         d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page);
 235
 236         while (!ddjvu_page_decoding_done (d_page))
 237                 djvu_handle_events(djvu_document, TRUE);
 238
 239         page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR + 0.5;
 240         page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR + 0.5;
 241
 242         switch (rc->rotation) {
 243                 case 90:
 244                         rotation = DDJVU_ROTATE_90;
 245                         tmp = page_height;
 246                         page_height = page_width;
 247                         page_width = tmp;
 248
 249                         break;
 250                 case 180:
 251                         rotation = DDJVU_ROTATE_180;
 252
 253                         break;
 254                 case 270:
 255                         rotation = DDJVU_ROTATE_270;
 256                         tmp = page_height;
 257                         page_height = page_width;
 258                         page_width = tmp;
 259
 260                         break;
 261                 default:
 262                         rotation = DDJVU_ROTATE_0;
 263         }
 264
 265         rowstride = page_width * 4;
 266         pixels = (gchar *) g_malloc (page_height * rowstride);
 267         surface = cairo_image_surface_create_for_data ((guchar *)pixels,
 268                                                        CAIRO_FORMAT_RGB24,
 269                                                        page_width,
 270                                                        page_height,
 271                                                        rowstride);
 272         cairo_surface_set_user_data (surface, &key,
 273                                      pixels, (cairo_destroy_func_t)g_free);
 274         prect.x = 0;
 275         prect.y = 0;
 276         prect.w = page_width;
 277         prect.h = page_height;
 278         rrect = prect;
 279
 280         ddjvu_page_set_rotation (d_page, rotation);
 281
 282         ddjvu_page_render (d_page, DDJVU_RENDER_COLOR,
 283                            &prect,
 284                            &rrect,
 285                            djvu_document->d_format,
 286                            rowstride,
 287                            pixels);
 288
 289         return surface;
 290 }
 291
 292 static void
 293 djvu_document_finalize (GObject *object)
 294 {
 295         DjvuDocument *djvu_document = DJVU_DOCUMENT (object);
 296
 297         if (djvu_document->search)
 298             djvu_text_free (djvu_document->search);
 299
 300         if (djvu_document->d_document)
 301             ddjvu_document_release (djvu_document->d_document);
 302
 303         if (djvu_document->opts)
 304             g_string_free (djvu_document->opts, TRUE);
 305
 306         if (djvu_document->ps_filename)
 307             g_free (djvu_document->ps_filename);
 308
 309         ddjvu_context_release (djvu_document->d_context);
 310         ddjvu_format_release (djvu_document->d_format);
 311         ddjvu_format_release (djvu_document->thumbs_format);
 312         g_free (djvu_document->uri);
 313
 314         G_OBJECT_CLASS (djvu_document_parent_class)->finalize (object);
 315 }
 316
 317 static void
 318 djvu_document_class_init (DjvuDocumentClass *klass)
 319 {
 320         GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 321
 322         gobject_class->finalize = djvu_document_finalize;
 323 }
 324
 325 static EvDocumentInfo *
 326 djvu_document_get_info (EvDocument *document)
 327 {
 328         EvDocumentInfo *info;
 329
 330         info = g_new0 (EvDocumentInfo, 1);
 331
 332         return info;
 333 }
 334
 335 static void
 336 djvu_document_document_iface_init (EvDocumentIface *iface)
 337 {
 338         iface->load = djvu_document_load;
 339         iface->save = djvu_document_save;
 340         iface->get_n_pages = djvu_document_get_n_pages;
 341         iface->get_page_size = djvu_document_get_page_size;
 342         iface->render = djvu_document_render;
 343         iface->get_info = djvu_document_get_info;
 344 }
 345
 346 static gchar *
 347 djvu_selection_get_selected_text (EvSelection     *selection,
 348                                   EvRenderContext *rc,
 349                                   EvSelectionStyle style,
 350                                   EvRectangle     *points)
 351 {
 352         DjvuDocument *djvu_document = DJVU_DOCUMENT (selection);
 353         double width, height;
 354         EvRectangle rectangle;
 355         gchar *text;
 356
 357         djvu_document_get_page_size (EV_DOCUMENT (djvu_document),
 358                                      rc->page, &width, &height);
 359         rectangle.x1 = points->x1 / SCALE_FACTOR;
 360         rectangle.y1 = (height - points->y2) / SCALE_FACTOR;
 361         rectangle.x2 = points->x2 / SCALE_FACTOR;
 362         rectangle.y2 = (height - points->y1) / SCALE_FACTOR;
 363
 364         text = djvu_text_copy (djvu_document, rc->page, &rectangle);
 365
 366         if (text == NULL)
 367                 text = g_strdup ("");
 368
 369         return text;
 370 }
 371
 372 static void
 373 djvu_selection_iface_init (EvSelectionIface *iface)
 374 {
 375         iface->get_selected_text = djvu_selection_get_selected_text;
 376 }
 377
 378 static void
 379 djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
 380                                          EvRenderContext      *rc,
 381                                          gint                 *width,
 382                                          gint                 *height)
 383 {
 384         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 385         gdouble page_width, page_height;
 386
 387         djvu_document_get_page_size (EV_DOCUMENT(djvu_document), rc->page,
 388                                      &page_width, &page_height);
 389
 390         if (rc->rotation == 90 || rc->rotation == 270) {
 391                 *width = (gint) (page_height * rc->scale);
 392                 *height = (gint) (page_width * rc->scale);
 393         } else {
 394                 *width = (gint) (page_width * rc->scale);
 395                 *height = (gint) (page_height * rc->scale);
 396         }
 397 }
 398
 399 static GdkPixbuf *
 400 djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
 401                                         EvRenderContext      *rc,
 402                                         gboolean              border)
 403 {
 404         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 405         GdkPixbuf *pixbuf, *rotated_pixbuf;
 406         gdouble page_width, page_height;
 407         gint thumb_width, thumb_height;
 408         guchar *pixels;
 409
 410         g_return_val_if_fail (djvu_document->d_document, NULL);
 411
 412         djvu_document_get_page_size (EV_DOCUMENT(djvu_document), rc->page,
 413                                      &page_width, &page_height);
 414
 415         thumb_width = (gint) (page_width * rc->scale);
 416         thumb_height = (gint) (page_height * rc->scale);
 417
 418         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
 419                                  thumb_width, thumb_height);
 420         gdk_pixbuf_fill (pixbuf, 0xffffffff);
 421         pixels = gdk_pixbuf_get_pixels (pixbuf);
 422
 423         while (ddjvu_thumbnail_status (djvu_document->d_document, rc->page, 1) < DDJVU_JOB_OK)
 424                 djvu_handle_events(djvu_document, TRUE);
 425
 426         ddjvu_thumbnail_render (djvu_document->d_document, rc->page,
 427                                 &thumb_width, &thumb_height,
 428                                 djvu_document->thumbs_format,
 429                                 gdk_pixbuf_get_rowstride (pixbuf),
 430                                 (gchar *)pixels);
 431
 432         rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rc->rotation);
 433         g_object_unref (pixbuf);
 434
 435         if (border) {
 436               GdkPixbuf *tmp_pixbuf = rotated_pixbuf;
 437
 438               rotated_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, tmp_pixbuf);
 439               g_object_unref (tmp_pixbuf);
 440         }
 441
 442         return rotated_pixbuf;
 443 }
 444
 445 static void
 446 djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 447 {
 448         iface->get_thumbnail = djvu_document_thumbnails_get_thumbnail;
 449         iface->get_dimensions = djvu_document_thumbnails_get_dimensions;
 450 }
 451
 452 /* EvFileExporterIface */
 453 static void
 454 djvu_document_file_exporter_begin (EvFileExporter        *exporter,
 455                                    EvFileExporterContext *fc)
 456 {
 457         DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
 458
 459         if (djvu_document->ps_filename)
 460                 g_free (djvu_document->ps_filename);
 461         djvu_document->ps_filename = g_strdup (fc->filename);
 462
 463         g_string_assign (djvu_document->opts, "-page=");
 464 }
 465
 466 static void
 467 djvu_document_file_exporter_do_page (EvFileExporter  *exporter,
 468                                      EvRenderContext *rc)
 469 {
 470         DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
 471
 472         g_string_append_printf (djvu_document->opts, "%d,", (rc->page) + 1);
 473 }
 474
 475 static void
 476 djvu_document_file_exporter_end (EvFileExporter *exporter)
 477 {
 478         int d_optc = 1;
 479         const char *d_optv[d_optc];
 480
 481         DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
 482
 483         FILE *fn = fopen (djvu_document->ps_filename, "w");
 484         if (fn == NULL) {
 485                 g_warning ("Cannot open file “%s”.", djvu_document->ps_filename);
 486                 return;
 487         }
 488
 489         d_optv[0] = djvu_document->opts->str;
 490
 491         ddjvu_job_t * job = ddjvu_document_print(djvu_document->d_document, fn, d_optc, d_optv);
 492         while (!ddjvu_job_done(job)) {
 493                 djvu_handle_events (djvu_document, TRUE);
 494         }
 495
 496         fclose(fn);
 497 }
 498
 499 static EvFileExporterCapabilities
 500 djvu_document_file_exporter_get_capabilities (EvFileExporter *exporter)
 501 {
 502         return  EV_FILE_EXPORTER_CAN_PAGE_SET |
 503                 EV_FILE_EXPORTER_CAN_COPIES |
 504                 EV_FILE_EXPORTER_CAN_COLLATE |
 505                 EV_FILE_EXPORTER_CAN_REVERSE |
 506                 EV_FILE_EXPORTER_CAN_GENERATE_PS;
 507 }
 508
 509 static void
 510 djvu_document_file_exporter_iface_init (EvFileExporterIface *iface)
 511 {
 512         iface->begin = djvu_document_file_exporter_begin;
 513         iface->do_page = djvu_document_file_exporter_do_page;
 514         iface->end = djvu_document_file_exporter_end;
 515         iface->get_capabilities = djvu_document_file_exporter_get_capabilities;
 516 }
 517
 518 static void
 519 djvu_document_init (DjvuDocument *djvu_document)
 520 {
 521         guint masks[4] = { 0xff0000, 0xff00, 0xff, 0xff000000 };
 522
 523         djvu_document->d_context = ddjvu_context_create ("Evince");
 524         djvu_document->d_format = ddjvu_format_create (DDJVU_FORMAT_RGBMASK32, 4, masks);
 525         ddjvu_format_set_row_order (djvu_document->d_format, 1);
 526
 527         djvu_document->thumbs_format = ddjvu_format_create (DDJVU_FORMAT_RGB24, 0, 0);
 528         ddjvu_format_set_row_order (djvu_document->thumbs_format, 1);
 529
 530         djvu_document->ps_filename = NULL;
 531         djvu_document->opts = g_string_new ("");
 532
 533         djvu_document->d_document = NULL;
 534 }
 535
 536 static void
 537 djvu_document_find_begin (EvDocumentFind   *document,
 538                           int               page,
 539                           const char       *search_string,
 540                           gboolean          case_sensitive)
 541 {
 542         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 543
 544         if (djvu_document->search &&
 545             strcmp (search_string, djvu_text_get_text (djvu_document->search)) == 0)
 546                 return;
 547
 548         if (djvu_document->search)
 549                 djvu_text_free (djvu_document->search);
 550
 551         djvu_document->search = djvu_text_new (djvu_document,
 552                                                           page,
 553                                                           case_sensitive,
 554                                                           search_string);
 555 }
 556
 557 static int
 558 djvu_document_find_get_n_results (EvDocumentFind *document_find, int page)
 559 {
 560         DjvuText *search = DJVU_DOCUMENT (document_find)->search;
 561
 562         if (search) {
 563                 return djvu_text_n_results (search, page);
 564         } else {
 565                 return 0;
 566         }
 567 }
 568
 569 static gboolean
 570 djvu_document_find_get_result (EvDocumentFind *document_find,
 571                                int             page,
 572                                int             n_result,
 573                                EvRectangle    *rectangle)
 574 {
 575         DjvuDocument *djvu_document = DJVU_DOCUMENT (document_find);
 576         DjvuText *search = djvu_document->search;
 577         EvRectangle *r;
 578         double width, height;
 579
 580         if (search == NULL)
 581                 return FALSE;
 582
 583         r = djvu_text_get_result (search, page, n_result);
 584         if (r == NULL)
 585                 return FALSE;
 586
 587         djvu_document_get_page_size (EV_DOCUMENT (djvu_document),
 588                 page, &width, &height);
 589         rectangle->x1 = r->x1 * SCALE_FACTOR;
 590         rectangle->y1 = height - r->y2 * SCALE_FACTOR;
 591         rectangle->x2 = r->x2 * SCALE_FACTOR;
 592         rectangle->y2 = height - r->y1 * SCALE_FACTOR;
 593
 594         return TRUE;
 595 }
 596
 597 static int
 598 djvu_document_find_page_has_results (EvDocumentFind *document_find,
 599                                     int             page)
 600 {
 601         DjvuText *search = DJVU_DOCUMENT (document_find)->search;
 602
 603         return search && djvu_text_has_results (search, page);
 604 }
 605
 606 static double
 607 djvu_document_find_get_progress (EvDocumentFind *document_find)
 608 {
 609         DjvuText *search = DJVU_DOCUMENT (document_find)->search;
 610
 611         if (search == NULL) {
 612                 return 0;
 613         }
 614
 615         return djvu_text_get_progress (search);
 616 }
 617
 618 static void
 619 djvu_document_find_cancel (EvDocumentFind *document)
 620 {
 621         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 622
 623         if (djvu_document->search) {
 624                 djvu_text_free (djvu_document->search);
 625                 djvu_document->search = NULL;
 626         }
 627 }
 628
 629 static void
 630 djvu_document_find_iface_init (EvDocumentFindIface *iface)
 631 {
 632         iface->begin = djvu_document_find_begin;
 633         iface->get_n_results = djvu_document_find_get_n_results;
 634         iface->get_result = djvu_document_find_get_result;
 635         iface->page_has_results = djvu_document_find_page_has_results;
 636         iface->get_progress = djvu_document_find_get_progress;
 637         iface->cancel = djvu_document_find_cancel;
 638 }
 639
 640 static GList *
 641 djvu_document_links_get_links (EvDocumentLinks *document_links,
 642                                gint             page)
 643 {
 644         return djvu_links_get_links (document_links, page, SCALE_FACTOR);
 645 }
 646
 647 static void
 648 djvu_document_document_links_iface_init  (EvDocumentLinksIface *iface)
 649 {
 650         iface->has_document_links = djvu_links_has_document_links;
 651         iface->get_links_model = djvu_links_get_links_model;
 652         iface->get_links = djvu_document_links_get_links;
 653         iface->find_link_dest = djvu_links_find_link_dest;
 654 }