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 extern LyXRC *lyxrc;
  53 extern BufferView *current_view;
  54
  55 // Spellchecker status
  56 enum {
  57         ISP_OK = 1,
  58         ISP_ROOT,
  59         ISP_COMPOUNDWORD,
  60         ISP_UNKNOWN,
  61         ISP_MISSED,
  62         ISP_IGNORE
  63 };
  64
  65 static bool RunSpellChecker(string const &);
  66
  67 static FILE *in, *out;  /* streams to communicate with ispell */
  68 pid_t isp_pid = -1; // pid for the `ispell' process. Also used (RO) in
  69                     // lyx_cb.C
  70
  71 // the true spell checker program being used
  72 enum ActualSpellChecker {ASC_ISPELL, ASC_ASPELL};
  73 static ActualSpellChecker actual_spell_checker;
  74
  75 static int isp_fd;
  76
  77 static FD_form_spell_options *fd_form_spell_options = 0;
  78 FD_form_spell_check *fd_form_spell_check = 0;
  79
  80 //void sigchldhandler(int sig);
  81 void sigchldhandler(pid_t pid, int *status);
  82
  83 //extern void sigchldchecker(int sig);
  84 extern void sigchldchecker(pid_t pid, int *status);
  85
  86 struct isp_result {
  87         int flag;
  88         int count;
  89         string str;
  90         char **misses;
  91         isp_result() {
  92                 flag = ISP_UNKNOWN;
  93                 count = 0;
  94                 misses = (char**)0;
  95         }
  96         ~isp_result() {
  97                 if (misses) delete[] misses;
  98         }
  99 };
 100
 101
 102 /***** Spellchecker options *****/
 103
 104 // Rewritten to use ordinary LyX xforms loop and OK, Apply and Cancel set,
 105 // now also string. Amazing, eh? (Asger)
 106
 107 // Set (sane) values in form to current spellchecker options
 108 void SpellOptionsUpdate()
 109 {
 110         // Alternate language
 111         if (lyxrc->isp_alt_lang.empty()) {
 112                 lyxrc->isp_use_alt_lang = false;
 113         } else {
 114                 fl_set_input(fd_form_spell_options->altlang_input,
 115                              lyxrc->isp_alt_lang.c_str());
 116         }
 117         if (lyxrc->isp_use_alt_lang) {
 118                 fl_set_button(fd_form_spell_options->buflang,0);
 119                 fl_set_button(fd_form_spell_options->altlang,1);
 120         } else {
 121                 fl_set_button(fd_form_spell_options->buflang,1);
 122                 fl_set_button(fd_form_spell_options->altlang,0);
 123         }
 124
 125         // Personal dictionary
 126         if (lyxrc->isp_pers_dict.empty()) {
 127                 lyxrc->isp_use_pers_dict = false;
 128         } else {
 129                 fl_set_input(fd_form_spell_options->perdict_input,
 130                              lyxrc->isp_pers_dict.c_str());
 131         }
 132         fl_set_button(fd_form_spell_options->perdict,
 133                       lyxrc->isp_use_pers_dict ? 1:0);
 134
 135         // Escape chars
 136         if (lyxrc->isp_esc_chars.empty()) {
 137                 lyxrc->isp_use_esc_chars = false;
 138         } else {
 139                 fl_set_input(fd_form_spell_options->esc_chars_input,
 140                              lyxrc->isp_esc_chars.c_str());
 141         }
 142         fl_set_button(fd_form_spell_options->esc_chars,
 143                       lyxrc->isp_use_esc_chars ? 1:0);
 144
 145         // Options
 146         fl_set_button(fd_form_spell_options->compounds,
 147                       lyxrc->isp_accept_compound ? 1 : 0);
 148         fl_set_button(fd_form_spell_options->inpenc,
 149                       lyxrc->isp_use_input_encoding ? 1 : 0);
 150 }
 151
 152 // Update spellchecker options
 153 void SpellOptionsApplyCB(FL_OBJECT *, long)
 154 {
 155         // Build new status from form data
 156         lyxrc->isp_use_alt_lang =
 157                 fl_get_button(fd_form_spell_options->altlang);
 158         lyxrc->isp_use_pers_dict =
 159                 fl_get_button(fd_form_spell_options->perdict);
 160         lyxrc->isp_accept_compound =
 161                 fl_get_button(fd_form_spell_options->compounds);
 162         lyxrc->isp_use_esc_chars =
 163                 fl_get_button(fd_form_spell_options->esc_chars);
 164         lyxrc->isp_use_input_encoding =
 165                 fl_get_button(fd_form_spell_options->inpenc);
 166
 167         // Update strings with data from input fields
 168         lyxrc->isp_alt_lang =
 169                 fl_get_input(fd_form_spell_options->altlang_input);
 170         lyxrc->isp_pers_dict =
 171                 fl_get_input(fd_form_spell_options->perdict_input);
 172         lyxrc->isp_esc_chars =
 173                 fl_get_input(fd_form_spell_options->esc_chars_input);
 174
 175         // Update form
 176         SpellOptionsUpdate();
 177 }
 178
 179
 180 void SpellOptionsCancelCB(FL_OBJECT *, long)
 181 {
 182         fl_hide_form(fd_form_spell_options->form_spell_options);
 183 }
 184
 185
 186 void SpellOptionsOKCB(FL_OBJECT * ob, long data)
 187 {
 188         SpellOptionsApplyCB(ob, data);
 189         SpellOptionsCancelCB(ob, data);
 190 }
 191
 192
 193 // Show spellchecker options form
 194 void SpellCheckerOptions()
 195 {
 196         // Create form if nescessary
 197         if (fd_form_spell_options ==  0) {
 198                 fd_form_spell_options = create_form_form_spell_options();
 199                 // Make sure pressing the close box does not kill LyX. (RvdK)
 200                 fl_set_form_atclose(fd_form_spell_options->form_spell_options,
 201                                     CancelCloseBoxCB, 0);
 202         }
 203
 204         // Update form to current options
 205         SpellOptionsUpdate();
 206
 207         // Focus in alternate language field
 208         fl_set_focus_object(fd_form_spell_options->form_spell_options,
 209                             fd_form_spell_options->altlang_input);
 210
 211         // Show form
 212         if (fd_form_spell_options->form_spell_options->visible) {
 213                 fl_raise_form(fd_form_spell_options->form_spell_options);
 214         } else {
 215                 fl_show_form(fd_form_spell_options->form_spell_options,
 216                              FL_PLACE_MOUSE,FL_FULLBORDER,
 217                              _("Spellchecker Options"));
 218         }
 219 }
 220
 221
 222 /***** Spellchecker *****/
 223
 224 // Could also use a clean up. (Asger Alstrup)
 225
 226 static
 227 void create_ispell_pipe(string const & lang)
 228 {
 229         static char o_buf[BUFSIZ];  // jc: it could be smaller
 230         int pipein[2], pipeout[2];
 231         char * argv[14];
 232         int argc;
 233
 234         isp_pid = -1;
 235
 236         if(pipe(pipein)==-1 || pipe(pipeout)==-1) {
 237                 lyxerr << "LyX: Can't create pipe for spellchecker!" << endl;
 238                 return;
 239         }
 240
 241         if ((out = fdopen(pipein[1], "w"))==0) {
 242                 lyxerr << "LyX: Can't create stream for pipe for spellchecker!"
 243                        << endl;
 244                 return;
 245         }
 246
 247         if ((in = fdopen(pipeout[0], "r"))==0) {
 248                 lyxerr <<"LyX: Can't create stream for pipe for spellchecker!"
 249                        << endl;
 250                 return;
 251         }
 252
 253         setvbuf(out, o_buf, _IOLBF, BUFSIZ);
 254
 255         isp_fd = pipeout[0];
 256
 257         isp_pid = fork();
 258
 259         if(isp_pid==-1) {
 260                 lyxerr << "LyX: Can't create child process for spellchecker!"
 261                        << endl;
 262                 return;
 263         }
 264
 265         if(isp_pid==0) {
 266                 /* child process */
 267                 dup2(pipein[0], STDIN_FILENO);
 268                 dup2(pipeout[1], STDOUT_FILENO);
 269                 close(pipein[0]);
 270                 close(pipein[1]);
 271                 close(pipeout[0]);
 272                 close(pipeout[1]);
 273
 274                 argc = 0;
 275                 char * tmp = new char[lyxrc->isp_command.length() + 1];
 276                 lyxrc->isp_command.copy(tmp, lyxrc->isp_command.length());
 277                 tmp[lyxrc->isp_command.length()] = '\0';
 278                 argv[argc++] = tmp;
 279                 tmp = new char[3];
 280                 string("-a").copy(tmp, 2); tmp[2] = '\0'; // pipe mode
 281                 argv[argc++] = tmp;
 282
 283                 if (lang != "default") {
 284                         tmp = new char[3];
 285                         string("-d").copy(tmp, 2); tmp[2] = '\0'; // Dictionary file
 286                         argv[argc++] = tmp;
 287                         tmp = new char[lang.length() + 1];
 288                         lang.copy(tmp, lang.length()); tmp[lang.length()] = '\0';
 289                         argv[argc++] = tmp;
 290                 }
 291
 292                 if (lyxrc->isp_accept_compound) {
 293                         // Consider run-together words as legal compounds
 294                         tmp = new char[3];
 295                         string("-C").copy(tmp, 2); tmp[2] = '\0';
 296                         argv[argc++] = tmp;
 297                 } else {
 298                         // Report run-together words with
 299                         // missing blanks as errors
 300                         tmp = new char[3];
 301                         string("-B").copy(tmp, 2); tmp[2] = '\0';
 302                         argv[argc++] = tmp;
 303                 }
 304                 if (lyxrc->isp_use_esc_chars) {
 305                         // Specify additional characters that
 306                         // can be part of a word
 307                         tmp = new char[3];
 308                         string("-w").copy(tmp, 2); tmp[2] = '\0';
 309                         argv[argc++] = tmp;
 310                         // Put the escape chars in ""s
 311                         string tms = "\"" + lyxrc->isp_esc_chars + "\"";
 312                         tmp = new char[tms.length() + 1];
 313                         tms.copy(tmp, tms.length()); tmp[tms.length()] = '\0';
 314                         argv[argc++] = tmp;
 315                 }
 316                 if (lyxrc->isp_use_pers_dict) {
 317                         // Specify an alternate personal dictionary
 318                         tmp = new char[3];
 319                         string("-p").copy(tmp, 2);
 320                         tmp[2]='\0';
 321                         argv[argc++] = tmp;
 322                         tmp = new char[lyxrc->isp_pers_dict.length() + 1];
 323                         lyxrc->isp_pers_dict.copy(tmp, lyxrc->isp_pers_dict.length());
 324                         tmp[lyxrc->isp_pers_dict.length()] = '\0';
 325                         argv[argc++] = tmp;
 326                 }
 327                 if (lyxrc->isp_use_input_encoding &&
 328                     current_view->currentBuffer()->params.inputenc != "default") {
 329                         tmp = new char[3];
 330                         string("-T").copy(tmp, 2); tmp[2] = '\0';
 331                         argv[argc++] = tmp; // Input encoding
 332                         tmp = new char[current_view->currentBuffer()->params.inputenc.length() + 1];
 333                         current_view->currentBuffer()->params.inputenc.copy(tmp, current_view->currentBuffer()->params.inputenc.length());
 334                         tmp[current_view->currentBuffer()->params.inputenc.length()] = '\0';
 335                         argv[argc++] = tmp;
 336                 }
 337
 338                 argv[argc++] = 0;
 339
 340                 execvp("ispell", (char * const *) argv);
 341
 342                 // free the memory used by string::copy in the
 343                 // setup of argv
 344                 for (int i=0; i < argc -1; i++)
 345                         delete[] argv[i];
 346
 347                 lyxerr << "LyX: Failed to start ispell!" << endl;
 348                 _exit(0);
 349         }
 350
 351         /* Parent process: Read ispells identification message */
 352         // Hmm...what are we using this id msg for? Nothing? (Lgb)
 353         // Actually I used it to tell if it's truly Ispell or if it's
 354         // aspell -- (kevinatk@home.com)
 355         char buf[2048];
 356 #ifdef WITH_WARNINGS
 357 #warning verify that this works.
 358 #endif
 359         fd_set infds;
 360         struct timeval tv;
 361         int retval = 0;
 362         FD_ZERO(&infds);
 363         FD_SET(pipeout[0], &infds);
 364         tv.tv_sec = 15; // fifteen second timeout. Probably too much,
 365                         // but it can't really hurt.
 366         tv.tv_usec = 0;
 367
 368         // Configure provides us with macros which are supposed to do
 369         // the right typecast.
 370         retval = select(SELECT_TYPE_ARG1 (pipeout[0]+1),
 371                         SELECT_TYPE_ARG234 (&infds),
 372                         0,
 373                         0,
 374                         SELECT_TYPE_ARG5 (&tv));
 375
 376         if (retval > 0) {
 377                 // Ok, do the reading. We don't have to FD_ISSET since
 378                 // there is only one fd in infds.
 379                 fgets(buf, 2048, in);
 380
 381                 // determine if the spell checker is really Aspell
 382                 if (strstr(buf, "Aspell"))
 383                   actual_spell_checker = ASC_ASPELL;
 384                 else
 385                   actual_spell_checker = ASC_ISPELL;
 386
 387         } else if (retval == 0) {
 388                 // timeout. Give nice message to user.
 389                 lyxerr << "Ispell read timed out, what now?" << endl;
 390 #ifdef WITH_WARNINGS
 391 #warning Is this the correct thing to do?
 392 #endif
 393                 isp_pid = -1;
 394                 close(pipeout[0]); close(pipeout[1]);
 395                 close(pipein[0]); close(pipein[1]);
 396                 isp_fd = -1;
 397         } else {
 398                 // Select returned error
 399                 lyxerr << "Select on ispell returned error, what now?" << endl;
 400         }
 401 }
 402
 403
 404 // Send word to ispell and get reply
 405 static
 406 isp_result *ispell_check_word(char *word)
 407 {
 408         //Please rewrite to use string.
 409         isp_result *result;
 410         char buf[1024], *p;
 411         int count, i;
 412
 413         fputs(word, out);
 414         fputc('\n', out);
 415
 416         fgets(buf, 1024, in);
 417
 418         /* I think we have to check if ispell is still alive here because
 419            the signal-handler could have disabled blocking on the fd */
 420         if (isp_pid == -1) return (isp_result *) 0;
 421
 422         result = new isp_result;
 423
 424         switch (*buf) {
 425         case '*': // Word found
 426                 result->flag = ISP_OK;
 427                 break;
 428         case '+': // Word found through affix removal
 429                 result->flag = ISP_ROOT;
 430                 break;
 431         case '-': // Word found through compound formation
 432                 result->flag = ISP_COMPOUNDWORD;
 433                 break;
 434         case '\n': // Number or when in terse mode: no problems
 435                 result->flag = ISP_IGNORE;
 436                 break;
 437         case '#': // Not found, no near misses and guesses
 438                 result->flag = ISP_UNKNOWN;
 439                 break;
 440         case '?': // Not found, and no near misses, but guesses (guesses are ignored)
 441         case '&': // Not found, but we have near misses
 442         {
 443                 result->flag = ISP_MISSED;
 444                 result->str = buf;
 445                 char * nb = new char[result->str.length() + 1];
 446                 result->str.copy(nb, result->str.length());
 447                 nb[result->str.length()]='\0';
 448                 p = strpbrk(nb+2, " ");
 449                 sscanf(p, "%d", &count); // Get near misses count
 450                 result->count = count;
 451                 if (count) result->misses = new char*[count];
 452                 p = strpbrk(nb, ":");
 453                 p +=2;
 454                 for (i = 0; i<count; i++) {
 455                         result->misses[i] = p;
 456                         p = strpbrk(p, ",\n");
 457                         *p = 0;
 458                         p+=2;
 459                 }
 460                 break;
 461         }
 462         default: // This shouldn't happend, but you know Murphy
 463                 result->flag = ISP_UNKNOWN;
 464         }
 465
 466         *buf = 0;
 467         if (result->flag!=ISP_IGNORE) {
 468                 while (*buf!='\n') fgets(buf, 255, in); /* wait for ispell to finish */
 469         }
 470         return result;
 471 }
 472
 473
 474 static
 475 inline void ispell_terminate()
 476 {
 477         // Note: If you decide to optimize this out when it is not
 478         // needed please note that when Aspell is used this command
 479         // is also needed to save the replacement dictionary.
 480         // -- Kevin Atkinson (kevinatk@home.com)
 481
 482         fputs("#\n", out); // Save personal dictionary
 483
 484         fflush(out);
 485         fclose(out);
 486 }
 487
 488
 489 static
 490 inline void ispell_terse_mode()
 491 {
 492         fputs("!\n", out); // Set terse mode (silently accept correct words)
 493 }
 494
 495
 496 static
 497 inline void ispell_insert_word(char const *word)
 498 {
 499         fputc('*', out); // Insert word in personal dictionary
 500         fputs(word, out);
 501         fputc('\n', out);
 502 }
 503
 504
 505 static
 506 inline void ispell_accept_word(char const *word)
 507 {
 508         fputc('@', out); // Accept in this session
 509         fputs(word, out);
 510         fputc('\n', out);
 511 }
 512
 513 static
 514 inline void ispell_store_replacement(const char *mis, string const & cor) {
 515         if(actual_spell_checker == ASC_ASPELL) {
 516                 fputs("$$ra ", out);
 517                 fputs(mis, out);
 518                 fputc(',', out);
 519                 fputs(cor.c_str(), out);
 520                 fputc('\n', out);
 521         }
 522 }
 523
 524
 525 void ShowSpellChecker()
 526 {
 527         FL_OBJECT *obj;
 528         int ret;
 529
 530         // Exit if we don't have a document open
 531         if (!current_view->getScreen())
 532                 return;
 533
 534         if (fd_form_spell_check == 0) {
 535                 fd_form_spell_check = create_form_form_spell_check();
 536                 // Make sure pressing the close box does not kill LyX. (RvdK)
 537                 fl_set_form_atclose(fd_form_spell_check->form_spell_check, IgnoreCloseBoxCB, 0);
 538         }
 539
 540         // Clear form
 541         fl_set_slider_value(fd_form_spell_check->slider, 0);
 542         fl_set_slider_bounds(fd_form_spell_check->slider, 0, 100);
 543         fl_set_object_label(fd_form_spell_check->text, "");
 544         fl_set_input(fd_form_spell_check->input, "");
 545         fl_clear_browser(fd_form_spell_check->browser);
 546
 547         // Show form
 548         if (fd_form_spell_check->form_spell_check->visible) {
 549                 fl_raise_form(fd_form_spell_check->form_spell_check);
 550         } else {
 551                 fl_show_form(fd_form_spell_check->form_spell_check,
 552                              FL_PLACE_MOUSE,FL_FULLBORDER,
 553                              _("Spellchecker"));
 554         }
 555         fl_deactivate_object(fd_form_spell_check->slider);
 556
 557         // deactivate insert, accept, replace, and stop
 558         fl_deactivate_object(fd_form_spell_check->insert);
 559         fl_deactivate_object(fd_form_spell_check->accept);
 560         fl_deactivate_object(fd_form_spell_check->ignore);
 561         fl_deactivate_object(fd_form_spell_check->replace);
 562         fl_deactivate_object(fd_form_spell_check->stop);
 563         fl_deactivate_object(fd_form_spell_check->input);
 564         fl_deactivate_object(fd_form_spell_check->browser);
 565         fl_set_object_lcol(fd_form_spell_check->insert, FL_INACTIVE);
 566         fl_set_object_lcol(fd_form_spell_check->accept, FL_INACTIVE);
 567         fl_set_object_lcol(fd_form_spell_check->ignore, FL_INACTIVE);
 568         fl_set_object_lcol(fd_form_spell_check->replace, FL_INACTIVE);
 569         fl_set_object_lcol(fd_form_spell_check->stop, FL_INACTIVE);
 570         fl_set_object_lcol(fd_form_spell_check->input, FL_INACTIVE);
 571         fl_set_object_lcol(fd_form_spell_check->browser, FL_INACTIVE);
 572
 573         while (true){
 574                 obj = fl_do_forms();
 575                 if (obj == fd_form_spell_check->options){
 576                         SpellCheckerOptions();
 577                 }
 578                 if (obj == fd_form_spell_check->start){
 579                         // activate insert, accept, and stop
 580                         fl_activate_object(fd_form_spell_check->insert);
 581                         fl_activate_object(fd_form_spell_check->accept);
 582                         fl_activate_object(fd_form_spell_check->ignore);
 583                         fl_activate_object(fd_form_spell_check->stop);
 584                         fl_activate_object(fd_form_spell_check->input);
 585                         fl_activate_object(fd_form_spell_check->browser);
 586                         fl_set_object_lcol(fd_form_spell_check->insert, FL_BLACK);
 587                         fl_set_object_lcol(fd_form_spell_check->accept, FL_BLACK);
 588                         fl_set_object_lcol(fd_form_spell_check->ignore, FL_BLACK);
 589                         fl_set_object_lcol(fd_form_spell_check->stop, FL_BLACK);
 590                         fl_set_object_lcol(fd_form_spell_check->input, FL_BLACK);
 591                         fl_set_object_lcol(fd_form_spell_check->browser, FL_BLACK);
 592                         // activate replace only if the file is not read-only
 593                         if (!current_view->currentBuffer()->isReadonly()) {
 594                           fl_activate_object(fd_form_spell_check->replace);
 595                           fl_set_object_lcol(fd_form_spell_check->replace, FL_BLACK);
 596                         }
 597
 598                         // deactivate options and start
 599                         fl_deactivate_object(fd_form_spell_check->options);
 600                         fl_deactivate_object(fd_form_spell_check->start);
 601                         fl_set_object_lcol(fd_form_spell_check->options, FL_INACTIVE);
 602                         fl_set_object_lcol(fd_form_spell_check->start, FL_INACTIVE);
 603
 604                         ret = RunSpellChecker(current_view->currentBuffer()->GetLanguage());
 605
 606                         // deactivate insert, accept, replace, and stop
 607                         fl_deactivate_object(fd_form_spell_check->insert);
 608                         fl_deactivate_object(fd_form_spell_check->accept);
 609                         fl_deactivate_object(fd_form_spell_check->ignore);
 610                         fl_deactivate_object(fd_form_spell_check->replace);
 611                         fl_deactivate_object(fd_form_spell_check->stop);
 612                         fl_deactivate_object(fd_form_spell_check->input);
 613                         fl_deactivate_object(fd_form_spell_check->browser);
 614                         fl_set_object_lcol(fd_form_spell_check->insert, FL_INACTIVE);
 615                         fl_set_object_lcol(fd_form_spell_check->accept, FL_INACTIVE);
 616                         fl_set_object_lcol(fd_form_spell_check->ignore, FL_INACTIVE);
 617                         fl_set_object_lcol(fd_form_spell_check->replace, FL_INACTIVE);
 618                         fl_set_object_lcol(fd_form_spell_check->stop, FL_INACTIVE);
 619                         fl_set_object_lcol(fd_form_spell_check->input, FL_INACTIVE);
 620                         fl_set_object_lcol(fd_form_spell_check->browser, FL_INACTIVE);
 621
 622                         // activate options and start
 623                         fl_activate_object(fd_form_spell_check->options);
 624                         fl_activate_object(fd_form_spell_check->start);
 625                         fl_set_object_lcol(fd_form_spell_check->options, FL_BLACK);
 626                         fl_set_object_lcol(fd_form_spell_check->start, FL_BLACK);
 627
 628                         // if RunSpellChecker returns false quit spellchecker
 629                         if (!ret) break;
 630                 }
 631                 if (obj == fd_form_spell_check->done) break;
 632         }
 633         fl_hide_form(fd_form_spell_check->form_spell_check);
 634         EndOfSpellCheck();
 635         return;
 636 }
 637
 638
 639 // Perform an ispell session
 640 static
 641 bool RunSpellChecker(string const & lang)
 642 {
 643         isp_result *result;
 644         char *word;
 645         int i, oldval, clickline, newvalue;
 646         float newval;
 647         FL_OBJECT *obj;
 648         unsigned int word_count = 0;
 649
 650         string tmp = (lyxrc->isp_use_alt_lang) ? lyxrc->isp_alt_lang:lang;
 651
 652         oldval = 0;  /* used for updating slider only when needed */
 653         newval = 0.0;
 654
 655         /* create ispell process */
 656         create_ispell_pipe(tmp);
 657
 658         if (isp_pid == -1) {
 659                 fl_show_message(
 660                         _("\n\n"
 661                           "The ispell-process has died for some reason. *One* possible reason\n"
 662                           "could be that you do not have a dictionary file\n"
 663                           "for the language of this document installed.\n"
 664                           "Check /usr/lib/ispell or set another\n"
 665                           "dictionary in the Spellchecker Options menu."), "", "");
 666                 fclose(out);
 667                 return true;
 668         }
 669
 670         // Put ispell in terse mode to improve speed
 671         ispell_terse_mode();
 672
 673         while (true) {
 674                 word = NextWord(newval);
 675                 if (word==0) break;
 676                 word_count++;
 677
 678                 // Update slider if and only if value has changed
 679                 newvalue = int(100.0*newval);
 680                 if(newvalue!=oldval) {
 681                         oldval = newvalue;
 682                         fl_set_slider_value(fd_form_spell_check->slider, oldval);
 683                 }
 684
 685                 result = ispell_check_word(word);
 686                 if (isp_pid==-1) {
 687                         delete[] word;
 688                         break;
 689                 }
 690
 691                 obj =  fl_check_forms();
 692                 if (obj == fd_form_spell_check->stop) {
 693                         delete result;
 694                         delete[] word;
 695                         ispell_terminate();
 696                         return true;
 697                 }
 698                 if (obj == fd_form_spell_check->done) {
 699                         delete result;
 700                         delete[] word;
 701                         ispell_terminate();
 702                         return false;
 703                 }
 704
 705                 switch (result->flag) {
 706                 case ISP_UNKNOWN:
 707                 case ISP_MISSED:
 708                         SelectLastWord();
 709                         fl_set_object_label(fd_form_spell_check->text, word);
 710                         fl_set_input(fd_form_spell_check->input, word);
 711                         fl_clear_browser(fd_form_spell_check->browser);
 712                         for (i=0; i<result->count; i++) {
 713                                 fl_add_browser_line(fd_form_spell_check->browser, result->misses[i]);
 714                         }
 715
 716                         clickline = -1;
 717                         while (true) {
 718                                 obj = fl_do_forms();
 719                                 if (obj==fd_form_spell_check->insert) {
 720                                         ispell_insert_word(word);
 721                                         break;
 722                                 }
 723                                 if (obj==fd_form_spell_check->accept) {
 724                                         ispell_accept_word(word);
 725                                         break;
 726                                 }
 727                                 if (obj==fd_form_spell_check->ignore) {
 728                                         break;
 729                                 }
 730                                 if (obj==fd_form_spell_check->replace ||
 731                                     obj==fd_form_spell_check->input) {
 732                                         ispell_store_replacement(word, fl_get_input(fd_form_spell_check->input));
 733                                         ReplaceWord(fl_get_input(fd_form_spell_check->input));
 734                                         break;
 735                                 }
 736                                 if (obj==fd_form_spell_check->browser) {
 737                                         // implements double click in the browser window.
 738                                         // sent to lyx@via by Mark Burton <mark@cbl.leeds.ac.uk>
 739                                         if (clickline ==
 740                                             fl_get_browser(fd_form_spell_check->browser)) {
 741                                                 ispell_store_replacement(word, fl_get_input(fd_form_spell_check->input));
 742                                                 ReplaceWord(fl_get_input(fd_form_spell_check->input));
 743                                                 break;
 744                                         }
 745                                         clickline = fl_get_browser(fd_form_spell_check->browser);
 746                                         fl_set_input(fd_form_spell_check->input,
 747                                                      fl_get_browser_line(fd_form_spell_check->browser,
 748                                                                          fl_get_browser(fd_form_spell_check->browser)));
 749
 750                                 }
 751                                 if (obj==fd_form_spell_check->stop) {
 752                                         delete result;
 753                                         delete[] word;
 754                                         ispell_terminate();
 755                                         return true;
 756                                 }
 757
 758                                 if (obj==fd_form_spell_check->done) {
 759                                         delete result;
 760                                         delete[] word;
 761                                         ispell_terminate();
 762                                         return false;
 763                                 }
 764                         }
 765                 default:
 766                         delete result;
 767                         delete[] word;
 768                 }
 769         }
 770
 771         if(isp_pid!=-1) {
 772                 ispell_terminate();
 773                 string word_msg;
 774                 word_msg += tostr(word_count);
 775                 if (word_count != 1) {
 776                         word_msg += _(" words checked.");
 777                 } else {
 778                         word_msg += _(" word checked.");
 779                 }
 780                 fl_show_message("",_("Spellchecking completed!"),
 781                                 word_msg.c_str());
 782                 return false;
 783         } else {
 784                 fl_show_message(_("The ispell-process has died for some reason.\n"
 785                                 "Maybe it has been killed."), "", "");
 786                 fclose(out);
 787                 return true;
 788         }
 789 }
 790
 791
 792 //void sigchldhandler(int sig)
 793 void sigchldhandler(pid_t pid, int *status)
 794 {
 795         //int status ;
 796
 797         if (isp_pid>0)
 798                 //if (waitpid(isp_pid,&status,WNOHANG)==isp_pid) {
 799                 if (pid == isp_pid) {
 800                         isp_pid=-1;
 801                         fcntl(isp_fd, F_SETFL, O_NONBLOCK); /* set the file descriptor
 802                                                                to nonblocking so we can
 803                                                                continue */
 804                 }
 805         //sigchldchecker(sig);
 806         sigchldchecker(pid, status);
 807 }