src/spellchecker.C

   1 /*
   2  *This file is part of
   3  * ======================================================
   4  *
   5  *           LyX, The Document Processor
   6  *
   7  *          Copyright 1995 Matthias Ettrich
   8  *          Copyright 1995-1998 The LyX Team
   9  *
  10  * ======================================================
  11  */
  12
  13 #include <config.h>
  14
  15 #include <unistd.h>
  16 #include <fcntl.h>
  17 #include <cstdlib>
  18 #include <cstring>
  19 #include <csignal>
  20 #include <sys/wait.h>
  21 #include <sys/types.h>
  22 #include <cctype>
  23 #include FORMS_H_LOCATION
  24
  25 #if TIME_WITH_SYS_TIME
  26 # include <sys/time.h>
  27 # include <ctime>
  28 #else
  29 # if HAVE_SYS_TIME_H
  30 #  include <sys/time.h>
  31 # else
  32 #  include <ctime>
  33 # endif
  34 #endif
  35
  36 #ifdef HAVE_SYS_SELECT_H
  37 #include <sys/select.h>
  38 #endif
  39
  40 #include "LString.h"
  41 #include "sp_form.h"
  42 #include "spellchecker.h"
  43 #include "lyx_main.h"
  44 #include "buffer.h"
  45 #include "lyxrc.h"
  46 #include "BufferView.h"
  47 #include "gettext.h"
  48 #include "lyx_gui_misc.h"
  49 #include "debug.h"
  50 #include "support/lstrings.h"
  51
  52
  53 // Spellchecker status
  54 enum {
  55         ISP_OK = 1,
  56         ISP_ROOT,
  57         ISP_COMPOUNDWORD,
  58         ISP_UNKNOWN,
  59         ISP_MISSED,
  60         ISP_IGNORE
  61 };
  62
  63 static bool RunSpellChecker(BufferView * bv);
  64
  65 static FILE * in, * out;  /* streams to communicate with ispell */
  66 pid_t isp_pid = -1; // pid for the `ispell' process. Also used (RO) in
  67                     // lyx_cb.C
  68
  69 // the true spell checker program being used
  70 enum ActualSpellChecker {ASC_ISPELL, ASC_ASPELL};
  71 static ActualSpellChecker actual_spell_checker;
  72
  73 static int isp_fd;
  74
  75 static FD_form_spell_options *fd_form_spell_options = 0;
  76 FD_form_spell_check *fd_form_spell_check = 0;
  77
  78 //void sigchldhandler(int sig);
  79 void sigchldhandler(pid_t pid, int *status);
  80
  81 //extern void sigchldchecker(int sig);
  82 extern void sigchldchecker(pid_t pid, int *status);
  83
  84 struct isp_result {
  85         int flag;
  86         int count;
  87         string str;
  88         char ** misses;
  89         isp_result() {
  90                 flag = ISP_UNKNOWN;
  91                 count = 0;
  92                 misses = static_cast<char**>(0);
  93         }
  94         ~isp_result() {
  95                 delete[] misses;
  96         }
  97 };
  98
  99
 100 /***** Spellchecker options *****/
 101
 102 // Rewritten to use ordinary LyX xforms loop and OK, Apply and Cancel set,
 103 // now also string. Amazing, eh? (Asger)
 104
 105 // Set (sane) values in form to current spellchecker options
 106 void SpellOptionsUpdate()
 107 {
 108         // Alternate language
 109         if (lyxrc.isp_alt_lang.empty()) {
 110                 lyxrc.isp_use_alt_lang = false;
 111         } else {
 112                 fl_set_input(fd_form_spell_options->altlang_input,
 113                              lyxrc.isp_alt_lang.c_str());
 114         }
 115         if (lyxrc.isp_use_alt_lang) {
 116                 fl_set_button(fd_form_spell_options->buflang, 0);
 117                 fl_set_button(fd_form_spell_options->altlang, 1);
 118         } else {
 119                 fl_set_button(fd_form_spell_options->buflang, 1);
 120                 fl_set_button(fd_form_spell_options->altlang, 0);
 121         }
 122
 123         // Personal dictionary
 124         if (lyxrc.isp_pers_dict.empty()) {
 125                 lyxrc.isp_use_pers_dict = false;
 126         } else {
 127                 fl_set_input(fd_form_spell_options->perdict_input,
 128                              lyxrc.isp_pers_dict.c_str());
 129         }
 130         fl_set_button(fd_form_spell_options->perdict,
 131                       lyxrc.isp_use_pers_dict ? 1:0);
 132
 133         // Escape chars
 134         if (lyxrc.isp_esc_chars.empty()) {
 135                 lyxrc.isp_use_esc_chars = false;
 136         } else {
 137                 fl_set_input(fd_form_spell_options->esc_chars_input,
 138                              lyxrc.isp_esc_chars.c_str());
 139         }
 140         fl_set_button(fd_form_spell_options->esc_chars,
 141                       lyxrc.isp_use_esc_chars ? 1:0);
 142
 143         // Options
 144         fl_set_button(fd_form_spell_options->compounds,
 145                       lyxrc.isp_accept_compound ? 1 : 0);
 146         fl_set_button(fd_form_spell_options->inpenc,
 147                       lyxrc.isp_use_input_encoding ? 1 : 0);
 148 }
 149
 150 // Update spellchecker options
 151 void SpellOptionsApplyCB(FL_OBJECT *, long)
 152 {
 153         // Build new status from form data
 154         lyxrc.isp_use_alt_lang =
 155                 fl_get_button(fd_form_spell_options->altlang);
 156         lyxrc.isp_use_pers_dict =
 157                 fl_get_button(fd_form_spell_options->perdict);
 158         lyxrc.isp_accept_compound =
 159                 fl_get_button(fd_form_spell_options->compounds);
 160         lyxrc.isp_use_esc_chars =
 161                 fl_get_button(fd_form_spell_options->esc_chars);
 162         lyxrc.isp_use_input_encoding =
 163                 fl_get_button(fd_form_spell_options->inpenc);
 164
 165         // Update strings with data from input fields
 166         lyxrc.isp_alt_lang =
 167                 fl_get_input(fd_form_spell_options->altlang_input);
 168         lyxrc.isp_pers_dict =
 169                 fl_get_input(fd_form_spell_options->perdict_input);
 170         lyxrc.isp_esc_chars =
 171                 fl_get_input(fd_form_spell_options->esc_chars_input);
 172
 173         // Update form
 174         SpellOptionsUpdate();
 175 }
 176
 177
 178 void SpellOptionsCancelCB(FL_OBJECT *, long)
 179 {
 180         fl_hide_form(fd_form_spell_options->form_spell_options);
 181 }
 182
 183
 184 void SpellOptionsOKCB(FL_OBJECT * ob, long data)
 185 {
 186         SpellOptionsApplyCB(ob, data);
 187         SpellOptionsCancelCB(ob, data);
 188 }
 189
 190
 191 // Show spellchecker options form
 192 void SpellCheckerOptions()
 193 {
 194         // Create form if nescessary
 195         if (fd_form_spell_options ==  0) {
 196                 fd_form_spell_options = create_form_form_spell_options();
 197                 // Make sure pressing the close box does not kill LyX. (RvdK)
 198                 fl_set_form_atclose(fd_form_spell_options->form_spell_options,
 199                                     CancelCloseBoxCB, 0);
 200         }
 201
 202         // Update form to current options
 203         SpellOptionsUpdate();
 204
 205         // Focus in alternate language field
 206         fl_set_focus_object(fd_form_spell_options->form_spell_options,
 207                             fd_form_spell_options->altlang_input);
 208
 209         // Show form
 210         if (fd_form_spell_options->form_spell_options->visible) {
 211                 fl_raise_form(fd_form_spell_options->form_spell_options);
 212         } else {
 213                 fl_show_form(fd_form_spell_options->form_spell_options,
 214                              FL_PLACE_MOUSE, FL_FULLBORDER,
 215                              _("Spellchecker Options"));
 216         }
 217 }
 218
 219
 220 /***** Spellchecker *****/
 221
 222 // Could also use a clean up. (Asger Alstrup)
 223
 224 static
 225 void create_ispell_pipe(BufferParams const & params, string const & lang)
 226 {
 227         static char o_buf[BUFSIZ];  // jc: it could be smaller
 228         int pipein[2], pipeout[2];
 229         char * argv[14];
 230         int argc;
 231
 232         isp_pid = -1;
 233
 234         if(pipe(pipein) == -1 || pipe(pipeout) == -1) {
 235                 lyxerr << "LyX: Can't create pipe for spellchecker!" << endl;
 236                 return;
 237         }
 238
 239         if ((out = fdopen(pipein[1], "w")) == 0) {
 240                 lyxerr << "LyX: Can't create stream for pipe for spellchecker!"
 241                        << endl;
 242                 return;
 243         }
 244
 245         if ((in = fdopen(pipeout[0], "r")) == 0) {
 246                 lyxerr <<"LyX: Can't create stream for pipe for spellchecker!"
 247                        << endl;
 248                 return;
 249         }
 250
 251         setvbuf(out, o_buf, _IOLBF, BUFSIZ);
 252
 253         isp_fd = pipeout[0];
 254
 255         isp_pid = fork();
 256
 257         if(isp_pid == -1) {
 258                 lyxerr << "LyX: Can't create child process for spellchecker!"
 259                        << endl;
 260                 return;
 261         }
 262
 263         if(isp_pid == 0) {
 264                 /* child process */
 265                 dup2(pipein[0], STDIN_FILENO);
 266                 dup2(pipeout[1], STDOUT_FILENO);
 267                 close(pipein[0]);
 268                 close(pipein[1]);
 269                 close(pipeout[0]);
 270                 close(pipeout[1]);
 271
 272                 argc = 0;
 273                 char * tmp = new char[lyxrc.isp_command.length() + 1];
 274                 lyxrc.isp_command.copy(tmp, lyxrc.isp_command.length());
 275                 tmp[lyxrc.isp_command.length()] = '\0';
 276                 argv[argc++] = tmp;
 277                 tmp = new char[3];
 278                 string("-a").copy(tmp, 2); tmp[2] = '\0'; // pipe mode
 279                 argv[argc++] = tmp;
 280
 281                 if (lang != "default") {
 282                         tmp = new char[3];
 283                         string("-d").copy(tmp, 2); tmp[2] = '\0'; // Dictionary file
 284                         argv[argc++] = tmp;
 285                         tmp = new char[lang.length() + 1];
 286                         lang.copy(tmp, lang.length()); tmp[lang.length()] = '\0';
 287                         argv[argc++] = tmp;
 288                 }
 289
 290                 if (lyxrc.isp_accept_compound) {
 291                         // Consider run-together words as legal compounds
 292                         tmp = new char[3];
 293                         string("-C").copy(tmp, 2); tmp[2] = '\0';
 294                         argv[argc++] = tmp;
 295                 } else {
 296                         // Report run-together words with
 297                         // missing blanks as errors
 298                         tmp = new char[3];
 299                         string("-B").copy(tmp, 2); tmp[2] = '\0';
 300                         argv[argc++] = tmp;
 301                 }
 302                 if (lyxrc.isp_use_esc_chars) {
 303                         // Specify additional characters that
 304                         // can be part of a word
 305                         tmp = new char[3];
 306                         string("-w").copy(tmp, 2); tmp[2] = '\0';
 307                         argv[argc++] = tmp;
 308                         // Put the escape chars in ""s
 309                         string tms = "\"" + lyxrc.isp_esc_chars + "\"";
 310                         tmp = new char[tms.length() + 1];
 311                         tms.copy(tmp, tms.length()); tmp[tms.length()] = '\0';
 312                         argv[argc++] = tmp;
 313                 }
 314                 if (lyxrc.isp_use_pers_dict) {
 315                         // Specify an alternate personal dictionary
 316                         tmp = new char[3];
 317                         string("-p").copy(tmp, 2);
 318                         tmp[2]= '\0';
 319                         argv[argc++] = tmp;
 320                         tmp = new char[lyxrc.isp_pers_dict.length() + 1];
 321                         lyxrc.isp_pers_dict.copy(tmp, lyxrc.isp_pers_dict.length());
 322                         tmp[lyxrc.isp_pers_dict.length()] = '\0';
 323                         argv[argc++] = tmp;
 324                 }
 325                 if (lyxrc.isp_use_input_encoding &&
 326                     params.inputenc != "default") {
 327                         tmp = new char[3];
 328                         string("-T").copy(tmp, 2); tmp[2] = '\0';
 329                         argv[argc++] = tmp; // Input encoding
 330                         tmp = new char[params.inputenc.length() + 1];
 331                         params.inputenc.copy(tmp, params.inputenc.length());
 332                         tmp[params.inputenc.length()] = '\0';
 333                         argv[argc++] = tmp;
 334                 }
 335
 336                 argv[argc++] = 0;
 337
 338                 execvp("ispell", const_cast<char * const *>(argv));
 339
 340                 // free the memory used by string::copy in the
 341                 // setup of argv
 342                 for (int i= 0; i < argc -1; ++i)
 343                         delete[] argv[i];
 344
 345                 lyxerr << "LyX: Failed to start ispell!" << endl;
 346                 _exit(0);
 347         }
 348
 349         /* Parent process: Read ispells identification message */
 350         // Hmm...what are we using this id msg for? Nothing? (Lgb)
 351         // Actually I used it to tell if it's truly Ispell or if it's
 352         // aspell -- (kevinatk@home.com)
 353         char buf[2048];
 354         fd_set infds;
 355         struct timeval tv;
 356         int retval = 0;
 357         FD_ZERO(&infds);
 358         FD_SET(pipeout[0], &infds);
 359         tv.tv_sec = 15; // fifteen second timeout. Probably too much,
 360                         // but it can't really hurt.
 361         tv.tv_usec = 0;
 362
 363         // Configure provides us with macros which are supposed to do
 364         // the right typecast.
 365         retval = select(SELECT_TYPE_ARG1 (pipeout[0]+1),
 366                         SELECT_TYPE_ARG234 (&infds),
 367                         0,
 368                         0,
 369                         SELECT_TYPE_ARG5 (&tv));
 370
 371         if (retval > 0) {
 372                 // Ok, do the reading. We don't have to FD_ISSET since
 373                 // there is only one fd in infds.
 374                 fgets(buf, 2048, in);
 375
 376                 // determine if the spell checker is really Aspell
 377                 if (strstr(buf, "Aspell"))
 378                   actual_spell_checker = ASC_ASPELL;
 379                 else
 380                   actual_spell_checker = ASC_ISPELL;
 381
 382         } else if (retval == 0) {
 383                 // timeout. Give nice message to user.
 384                 lyxerr << "Ispell read timed out, what now?" << endl;
 385                 // This probably works but could need some thought
 386                 isp_pid = -1;
 387                 close(pipeout[0]); close(pipeout[1]);
 388                 close(pipein[0]); close(pipein[1]);
 389                 isp_fd = -1;
 390         } else {
 391                 // Select returned error
 392                 lyxerr << "Select on ispell returned error, what now?" << endl;
 393         }
 394 }
 395
 396
 397 // Send word to ispell and get reply
 398 static
 399 isp_result *ispell_check_word(char *word)
 400 {
 401         //Please rewrite to use string.
 402         isp_result *result;
 403         char buf[1024], *p;
 404         int count, i;
 405
 406         fputs(word, out);
 407         fputc('\n', out);
 408
 409         fgets(buf, 1024, in);
 410
 411         /* I think we have to check if ispell is still alive here because
 412            the signal-handler could have disabled blocking on the fd */
 413         if (isp_pid == -1) return 0;
 414
 415         result = new isp_result;
 416
 417         switch (*buf) {
 418         case '*': // Word found
 419                 result->flag = ISP_OK;
 420                 break;
 421         case '+': // Word found through affix removal
 422                 result->flag = ISP_ROOT;
 423                 break;
 424         case '-': // Word found through compound formation
 425                 result->flag = ISP_COMPOUNDWORD;
 426                 break;
 427         case '\n': // Number or when in terse mode: no problems
 428                 result->flag = ISP_IGNORE;
 429                 break;
 430         case '#': // Not found, no near misses and guesses
 431                 result->flag = ISP_UNKNOWN;
 432                 break;
 433         case '?': // Not found, and no near misses, but guesses (guesses are ignored)
 434         case '&': // Not found, but we have near misses
 435         {
 436                 result->flag = ISP_MISSED;
 437                 result->str = buf;
 438                 // nb is leaked! where should it be freed? I have to
 439                 // admit I do not understand the intent of the code :(
 440                 // (JMarc)
 441                 char * nb = new char[result->str.length() + 1];
 442                 result->str.copy(nb, result->str.length());
 443                 nb[result->str.length()]= '\0';
 444                 p = strpbrk(nb+2, " ");
 445                 sscanf(p, "%d", &count); // Get near misses count
 446                 result->count = count;
 447                 if (count) result->misses = new char*[count];
 448                 p = strpbrk(nb, ":");
 449                 p += 2;
 450                 for (i = 0; i < count; ++i) {
 451                         result->misses[i] = p;
 452                         p = strpbrk(p, ",\n");
 453                         *p = 0;
 454                         p += 2;
 455                 }
 456                 break;
 457         }
 458         default: // This shouldn't happend, but you know Murphy
 459                 result->flag = ISP_UNKNOWN;
 460         }
 461
 462         *buf = 0;
 463         if (result->flag!= ISP_IGNORE) {
 464                 while (*buf!= '\n') fgets(buf, 255, in); /* wait for ispell to finish */
 465         }
 466         return result;
 467 }
 468
 469
 470 static inline
 471 void ispell_terminate()
 472 {
 473         // Note: If you decide to optimize this out when it is not
 474         // needed please note that when Aspell is used this command
 475         // is also needed to save the replacement dictionary.
 476         // -- Kevin Atkinson (kevinatk@home.com)
 477
 478         fputs("#\n", out); // Save personal dictionary
 479
 480         fflush(out);
 481         fclose(out);
 482 }
 483
 484
 485 static inline
 486 void ispell_terse_mode()
 487 {
 488         fputs("!\n", out); // Set terse mode (silently accept correct words)
 489 }
 490
 491
 492 static inline
 493 void ispell_insert_word(char const *word)
 494 {
 495         fputc('*', out); // Insert word in personal dictionary
 496         fputs(word, out);
 497         fputc('\n', out);
 498 }
 499
 500
 501 static inline
 502 void ispell_accept_word(char const *word)
 503 {
 504         fputc('@', out); // Accept in this session
 505         fputs(word, out);
 506         fputc('\n', out);
 507 }
 508
 509 static inline
 510 void ispell_store_replacement(char const *mis, string const & cor) {
 511         if(actual_spell_checker == ASC_ASPELL) {
 512                 fputs("$$ra ", out);
 513                 fputs(mis, out);
 514                 fputc(',', out);
 515                 fputs(cor.c_str(), out);
 516                 fputc('\n', out);
 517         }
 518 }
 519
 520
 521 void ShowSpellChecker(BufferView * bv)
 522 {
 523         FL_OBJECT * obj;
 524         int ret;
 525
 526         // Exit if we don't have a document open
 527         if (!bv->available())
 528                 return;
 529
 530         if (fd_form_spell_check == 0) {
 531                 fd_form_spell_check = create_form_form_spell_check();
 532                 // Make sure pressing the close box does not kill LyX. (RvdK)
 533                 fl_set_form_atclose(fd_form_spell_check->form_spell_check, IgnoreCloseBoxCB, 0);
 534         }
 535
 536         // Clear form
 537         fl_set_slider_value(fd_form_spell_check->slider, 0);
 538         fl_set_slider_bounds(fd_form_spell_check->slider, 0, 100);
 539         fl_set_object_label(fd_form_spell_check->text, "");
 540         fl_set_input(fd_form_spell_check->input, "");
 541         fl_clear_browser(fd_form_spell_check->browser);
 542
 543         // Show form
 544         if (fd_form_spell_check->form_spell_check->visible) {
 545                 fl_raise_form(fd_form_spell_check->form_spell_check);
 546         } else {
 547                 fl_show_form(fd_form_spell_check->form_spell_check,
 548                              FL_PLACE_MOUSE, FL_FULLBORDER,
 549                              _("Spellchecker"));
 550         }
 551         fl_deactivate_object(fd_form_spell_check->slider);
 552
 553         // deactivate insert, accept, replace, and stop
 554         fl_deactivate_object(fd_form_spell_check->insert);
 555         fl_deactivate_object(fd_form_spell_check->accept);
 556         fl_deactivate_object(fd_form_spell_check->ignore);
 557         fl_deactivate_object(fd_form_spell_check->replace);
 558         fl_deactivate_object(fd_form_spell_check->stop);
 559         fl_deactivate_object(fd_form_spell_check->input);
 560         fl_deactivate_object(fd_form_spell_check->browser);
 561         fl_set_object_lcol(fd_form_spell_check->insert, FL_INACTIVE);
 562         fl_set_object_lcol(fd_form_spell_check->accept, FL_INACTIVE);
 563         fl_set_object_lcol(fd_form_spell_check->ignore, FL_INACTIVE);
 564         fl_set_object_lcol(fd_form_spell_check->replace, FL_INACTIVE);
 565         fl_set_object_lcol(fd_form_spell_check->stop, FL_INACTIVE);
 566         fl_set_object_lcol(fd_form_spell_check->input, FL_INACTIVE);
 567         fl_set_object_lcol(fd_form_spell_check->browser, FL_INACTIVE);
 568
 569         while (true){
 570                 obj = fl_do_forms();
 571                 if (obj == fd_form_spell_check->options){
 572                         SpellCheckerOptions();
 573                 }
 574                 if (obj == fd_form_spell_check->start){
 575                         // activate insert, accept, and stop
 576                         fl_activate_object(fd_form_spell_check->insert);
 577                         fl_activate_object(fd_form_spell_check->accept);
 578                         fl_activate_object(fd_form_spell_check->ignore);
 579                         fl_activate_object(fd_form_spell_check->stop);
 580                         fl_activate_object(fd_form_spell_check->input);
 581                         fl_activate_object(fd_form_spell_check->browser);
 582                         fl_set_object_lcol(fd_form_spell_check->insert, FL_BLACK);
 583                         fl_set_object_lcol(fd_form_spell_check->accept, FL_BLACK);
 584                         fl_set_object_lcol(fd_form_spell_check->ignore, FL_BLACK);
 585                         fl_set_object_lcol(fd_form_spell_check->stop, FL_BLACK);
 586                         fl_set_object_lcol(fd_form_spell_check->input, FL_BLACK);
 587                         fl_set_object_lcol(fd_form_spell_check->browser, FL_BLACK);
 588                         // activate replace only if the file is not read-only
 589                         if (!bv->buffer()->isReadonly()) {
 590                           fl_activate_object(fd_form_spell_check->replace);
 591                           fl_set_object_lcol(fd_form_spell_check->replace, FL_BLACK);
 592                         }
 593
 594                         // deactivate options and start
 595                         fl_deactivate_object(fd_form_spell_check->options);
 596                         fl_deactivate_object(fd_form_spell_check->start);
 597                         fl_set_object_lcol(fd_form_spell_check->options, FL_INACTIVE);
 598                         fl_set_object_lcol(fd_form_spell_check->start, FL_INACTIVE);
 599
 600                         ret = RunSpellChecker(bv);
 601
 602                         // deactivate insert, accept, replace, and stop
 603                         fl_deactivate_object(fd_form_spell_check->insert);
 604                         fl_deactivate_object(fd_form_spell_check->accept);
 605                         fl_deactivate_object(fd_form_spell_check->ignore);
 606                         fl_deactivate_object(fd_form_spell_check->replace);
 607                         fl_deactivate_object(fd_form_spell_check->stop);
 608                         fl_deactivate_object(fd_form_spell_check->input);
 609                         fl_deactivate_object(fd_form_spell_check->browser);
 610                         fl_set_object_lcol(fd_form_spell_check->insert, FL_INACTIVE);
 611                         fl_set_object_lcol(fd_form_spell_check->accept, FL_INACTIVE);
 612                         fl_set_object_lcol(fd_form_spell_check->ignore, FL_INACTIVE);
 613                         fl_set_object_lcol(fd_form_spell_check->replace, FL_INACTIVE);
 614                         fl_set_object_lcol(fd_form_spell_check->stop, FL_INACTIVE);
 615                         fl_set_object_lcol(fd_form_spell_check->input, FL_INACTIVE);
 616                         fl_set_object_lcol(fd_form_spell_check->browser, FL_INACTIVE);
 617
 618                         // activate options and start
 619                         fl_activate_object(fd_form_spell_check->options);
 620                         fl_activate_object(fd_form_spell_check->start);
 621                         fl_set_object_lcol(fd_form_spell_check->options, FL_BLACK);
 622                         fl_set_object_lcol(fd_form_spell_check->start, FL_BLACK);
 623
 624                         // if RunSpellChecker returns false quit spellchecker
 625                         if (!ret) break;
 626                 }
 627                 if (obj == fd_form_spell_check->done) break;
 628         }
 629         fl_hide_form(fd_form_spell_check->form_spell_check);
 630         bv->endOfSpellCheck();
 631         return;
 632 }
 633
 634
 635 // Perform an ispell session
 636 static
 637 bool RunSpellChecker(BufferView * bv)
 638 {
 639         isp_result * result;
 640         int i, newvalue;
 641         FL_OBJECT * obj;
 642
 643         string tmp = (lyxrc.isp_use_alt_lang) ? lyxrc.isp_alt_lang : bv->buffer()->GetLanguage();
 644
 645         int oldval = 0;  /* used for updating slider only when needed */
 646         float newval = 0.0;
 647
 648         /* create ispell process */
 649         create_ispell_pipe(bv->buffer()->params, tmp);
 650
 651         if (isp_pid == -1) {
 652                 fl_show_message(
 653                         _("\n\n"
 654                           "The ispell-process has died for some reason. *One* possible reason\n"
 655                           "could be that you do not have a dictionary file\n"
 656                           "for the language of this document installed.\n"
 657                           "Check /usr/lib/ispell or set another\n"
 658                           "dictionary in the Spellchecker Options menu."), "", "");
 659                 fclose(out);
 660                 return true;
 661         }
 662
 663         // Put ispell in terse mode to improve speed
 664         ispell_terse_mode();
 665
 666         unsigned int word_count = 0;
 667         while (true) {
 668                 char * word = bv->nextWord(newval);
 669                 if (word == 0) break;
 670                 ++word_count;
 671
 672                 // Update slider if and only if value has changed
 673                 newvalue = int(100.0*newval);
 674                 if(newvalue!= oldval) {
 675                         oldval = newvalue;
 676                         fl_set_slider_value(fd_form_spell_check->slider, oldval);
 677                 }
 678
 679                 result = ispell_check_word(word);
 680                 if (isp_pid == -1) {
 681                         delete[] word;
 682                         break;
 683                 }
 684
 685                 obj =  fl_check_forms();
 686                 if (obj == fd_form_spell_check->stop) {
 687                         delete result;
 688                         delete[] word;
 689                         ispell_terminate();
 690                         return true;
 691                 }
 692                 if (obj == fd_form_spell_check->done) {
 693                         delete result;
 694                         delete[] word;
 695                         ispell_terminate();
 696                         return false;
 697                 }
 698
 699                 switch (result->flag) {
 700                 case ISP_UNKNOWN:
 701                 case ISP_MISSED:
 702                 {
 703                         bv->selectLastWord();
 704                         fl_set_object_label(fd_form_spell_check->text, word);
 705                         fl_set_input(fd_form_spell_check->input, word);
 706                         fl_clear_browser(fd_form_spell_check->browser);
 707                         for (i = 0; i < result->count; ++i) {
 708                                 fl_add_browser_line(fd_form_spell_check->browser, result->misses[i]);
 709                         }
 710
 711                         int clickline = -1;
 712                         while (true) {
 713                                 obj = fl_do_forms();
 714                                 if (obj == fd_form_spell_check->insert) {
 715                                         ispell_insert_word(word);
 716                                         break;
 717                                 }
 718                                 if (obj == fd_form_spell_check->accept) {
 719                                         ispell_accept_word(word);
 720                                         break;
 721                                 }
 722                                 if (obj == fd_form_spell_check->ignore) {
 723                                         break;
 724                                 }
 725                                 if (obj == fd_form_spell_check->replace ||
 726                                     obj == fd_form_spell_check->input) {
 727                                         ispell_store_replacement(word, fl_get_input(fd_form_spell_check->input));
 728                                         bv->replaceWord(fl_get_input(fd_form_spell_check->input));
 729                                         break;
 730                                 }
 731                                 if (obj == fd_form_spell_check->browser) {
 732                                         // implements double click in the browser window.
 733                                         // sent to lyx@via by Mark Burton <mark@cbl.leeds.ac.uk>
 734                                         if (clickline ==
 735                                             fl_get_browser(fd_form_spell_check->browser)) {
 736                                                 ispell_store_replacement(word, fl_get_input(fd_form_spell_check->input));
 737                                                 bv->replaceWord(fl_get_input(fd_form_spell_check->input));
 738                                                 break;
 739                                         }
 740                                         clickline = fl_get_browser(fd_form_spell_check->browser);
 741                                         fl_set_input(fd_form_spell_check->input,
 742                                                      fl_get_browser_line(fd_form_spell_check->browser,
 743                                                                          fl_get_browser(fd_form_spell_check->browser)));
 744
 745                                 }
 746                                 if (obj == fd_form_spell_check->stop) {
 747                                         delete result;
 748                                         delete[] word;
 749                                         ispell_terminate();
 750                                         return true;
 751                                 }
 752
 753                                 if (obj == fd_form_spell_check->done) {
 754                                         delete result;
 755                                         delete[] word;
 756                                         ispell_terminate();
 757                                         return false;
 758                                 }
 759                         }
 760                 }
 761                 default:
 762                         delete result;
 763                         delete[] word;
 764                 }
 765         }
 766
 767         if(isp_pid!= -1) {
 768                 ispell_terminate();
 769                 string word_msg(tostr(word_count));
 770                 if (word_count != 1) {
 771                         word_msg += _(" words checked.");
 772                 } else {
 773                         word_msg += _(" word checked.");
 774                 }
 775                 fl_show_message("", _("Spellchecking completed!"),
 776                                 word_msg.c_str());
 777                 return false;
 778         } else {
 779                 fl_show_message(_("The ispell-process has died for some reason.\n"
 780                                 "Maybe it has been killed."), "", "");
 781                 fclose(out);
 782                 return true;
 783         }
 784 }
 785
 786
 787 void sigchldhandler(pid_t pid, int * status)
 788 {
 789         if (isp_pid > 0)
 790                 if (pid == isp_pid) {
 791                         isp_pid= -1;
 792                         fcntl(isp_fd, F_SETFL, O_NONBLOCK); /* set the file descriptor
 793                                                                to nonblocking so we can
 794                                                                continue */
 795                 }
 796         sigchldchecker(pid, status);
 797 }