pico/file.c

   1 #if     !defined(lint) && !defined(DOS)
   2 static char rcsid[] = "$Id: file.c 1082 2008-06-12 18:39:50Z hubert@u.washington.edu $";
   3 #endif
   4
   5 /*
   6  * ========================================================================
   7  * Copyright 2006-2007 University of Washington
   8  * Copyright 2013-2016 Eduardo Chappa
   9  *
  10  * Licensed under the Apache License, Version 2.0 (the "License");
  11  * you may not use this file except in compliance with the License.
  12  * You may obtain a copy of the License at
  13  *
  14  *     http://www.apache.org/licenses/LICENSE-2.0
  15  *
  16  * ========================================================================
  17  *
  18  * Program:     High level file input and output routines
  19  *
  20  */
  21
  22 /*
  23  * The routines in this file
  24  * handle the reading and writing of
  25  * disk files. All of details about the
  26  * reading and writing of the disk are
  27  * in "fileio.c".
  28  */
  29 #include        "headers.h"
  30 #include        "../pith/charconv/filesys.h"
  31
  32
  33 void  init_insmsgchar_cbuf(void);
  34 int   insmsgchar(int);
  35 char *file_split(char *, size_t, char *, int);
  36
  37 /*
  38  * Read a file into the current
  39  * buffer. This is really easy; all you do it
  40  * find the name of the file, and call the standard
  41  * "read a file into the current buffer" code.
  42  * Bound to "C-X C-R".
  43  */
  44 int
  45 fileread(int f, int n)
  46 {
  47         register int    s;
  48         char fname[NFILEN];
  49         EML eml;
  50
  51         if ((s=mlreply_utf8(_("Read file: "), fname, NFILEN, QNORML, NULL)) != TRUE)
  52                 return(s);
  53
  54         if(gmode&MDSCUR){
  55             emlwrite(_("File reading disabled in secure mode"),NULL);
  56             return(0);
  57         }
  58
  59         if (strlen(fname) == 0) {
  60           emlwrite(_("No file name entered"),NULL);
  61           return(0);
  62         }
  63
  64         if((gmode & MDTREE) && !in_oper_tree(fname)){
  65           eml.s = opertree;
  66           emlwrite(_("Can't read file from outside of %s"), &eml);
  67           return(0);
  68         }
  69
  70         return(readin(fname, TRUE, TRUE));
  71 }
  72
  73
  74
  75 static char *inshelptext[] = {
  76   /* TRANSLATORS: several lines of help text */
  77   N_("Insert File Help Text"),
  78   " ",
  79   N_("        Type in a file name to have it inserted into your editing"),
  80   N_("        buffer between the line that the cursor is currently on"),
  81   N_("        and the line directly below it.  You may abort this by "),
  82   N_("~        typing the ~F~2 (~^~C) key after exiting help."),
  83   " ",
  84   N_("End of Insert File Help"),
  85   " ",
  86   NULL
  87 };
  88
  89 static char *writehelp[] = {
  90   /* TRANSLATORS: several lines of help text */
  91   N_("Write File Help Text"),
  92   " ",
  93   N_("        Type in a file name to have it written out, thus saving"),
  94   N_("        your buffer, to a file.  You can abort this by typing "),
  95   N_("~        the ~F~2 (~^~C) key after exiting help."),
  96   " ",
  97   N_("End of Write File Help"),
  98   " ",
  99   " ",
 100   NULL
 101 };
 102
 103
 104 /*
 105  * Insert a file into the current
 106  * buffer. This is really easy; all you do it
 107  * find the name of the file, and call the standard
 108  * "insert a file into the current buffer" code.
 109  * Bound to "C-X C-I".
 110  */
 111 int
 112 insfile(int f, int n)
 113 {
 114     register int s;
 115     char         fname[NLINE], dir[NLINE];
 116     int          retval, bye = 0, msg = 0;
 117     char         prompt[64], *infile;
 118     EXTRAKEYS    menu_ins[10];
 119     EML          eml;
 120
 121     if (curbp->b_mode&MDVIEW) /* don't allow this command if */
 122       return(rdonly()); /* we are in read only mode */
 123
 124     memset(&menu_ins, 0, 10*sizeof(EXTRAKEYS));
 125     fname[0] = dir[0] = '\0';
 126     while(!bye){
 127         /* set up keymenu stuff */
 128         if(!msg){
 129             int last_menu = 0;
 130
 131             menu_ins[last_menu].name  = "^T";
 132             menu_ins[last_menu].key   = (CTRL|'T');
 133             menu_ins[last_menu].label = N_("To Files");
 134             KS_OSDATASET(&menu_ins[last_menu], KS_NONE);
 135
 136             if(Pmaster && Pmaster->msgntext){
 137                 menu_ins[++last_menu].name  = "^W";
 138                 menu_ins[last_menu].key     = (CTRL|'W');
 139                 /* TRANSLATORS: Insert File is a key label for a command
 140                    that inserts a file into a message being composed.
 141                    InsertMsg means Insert Message and it inserts a different
 142                    message into the message being composed. */
 143                 menu_ins[last_menu].label   = msg ? N_("InsertFile") : N_("InsertMsg");
 144                 KS_OSDATASET(&menu_ins[last_menu], KS_NONE);
 145             }
 146
 147 #if     !defined(DOS) && !defined(MAC)
 148             if(Pmaster && Pmaster->upload){
 149                 menu_ins[++last_menu].name = "^Y";
 150                 menu_ins[last_menu].key    = (CTRL|'Y');
 151                 menu_ins[last_menu].label  = "RcvUpload";
 152                 KS_OSDATASET(&menu_ins[last_menu], KS_NONE);
 153             }
 154 #endif  /* !(DOS || MAC) */
 155
 156             if(gmode & MDCMPLT){
 157                 menu_ins[++last_menu].name = msg ? "" : "TAB";
 158                 menu_ins[last_menu].key    = (CTRL|'I');
 159                 menu_ins[last_menu].label  = msg ? "" : N_("Complete");
 160                 KS_OSDATASET(&menu_ins[last_menu], KS_NONE);
 161             }
 162
 163             menu_ins[++last_menu].name = NULL;
 164         }
 165
 166         snprintf(prompt, sizeof(prompt), "%s to insert from %s %s: ",
 167                 msg ? "Number of message" : "File",
 168                 (msg || (gmode&MDCURDIR))
 169                   ? "current"
 170                   : ((gmode & MDTREE) || opertree[0]) ? opertree : "home",
 171                 msg ? "folder" : "directory");
 172         s = mlreplyd_utf8(prompt, fname, NLINE, QDEFLT, msg ? NULL : menu_ins);
 173         /* something to read and it was edited or the default accepted */
 174         if(fname[0] && (s == TRUE || s == FALSE)){
 175             bye++;
 176             if(msg){
 177                 init_insmsgchar_cbuf();
 178                 if((*Pmaster->msgntext)(atol(fname), insmsgchar)){
 179                     eml.s = fname;
 180                     emlwrite(_("Message %s included"), &eml);
 181                 }
 182             }
 183             else{
 184                 bye++;
 185                 if(gmode&MDSCUR){
 186                     emlwrite(_("Can't insert file in restricted mode"),NULL);
 187                 }
 188                 else{
 189                     if((gmode & MDTREE)
 190                        && !compresspath(opertree, fname, sizeof(fname))){
 191                         eml.s = opertree;
 192                         emlwrite(
 193                         _("Can't insert file from outside of %s: too many ..'s"), &eml);
 194                     }
 195                     else{
 196                         fixpath(fname, sizeof(fname));
 197
 198                         if((gmode & MDTREE) && !in_oper_tree(fname)){
 199                             eml.s = opertree;
 200                             emlwrite(_("Can't insert file from outside of %s"), &eml);
 201                         }
 202                         else
 203                           retval = ifile(fname);
 204                     }
 205                 }
 206             }
 207         }
 208         else{
 209             switch(s){
 210               case (CTRL|'I') :
 211                 {
 212                     char *fn;
 213
 214                     dir[0] = '\0';
 215                     fn = file_split(dir, sizeof(dir), fname, 0);
 216
 217                     if(!pico_fncomplete(dir, fn, sizeof(fname)-(fn-fname)))
 218                       (*term.t_beep)();
 219                 }
 220
 221                 break;
 222               case (CTRL|'W'):
 223                 msg = !msg;                     /* toggle what to insert */
 224                 break;
 225               case (CTRL|'T'):
 226                 if(msg){
 227                     emlwrite(_("Can't select messages yet!"), NULL);
 228                 }
 229                 else{
 230                     char *fn;
 231
 232                     fn = file_split(dir, sizeof(dir), fname, 1);
 233                     if(!isdir(dir, NULL, NULL)){
 234                       strncpy(dir, (gmode&MDCURDIR)
 235                              ? (browse_dir[0] ? browse_dir : ".")
 236                              : ((gmode & MDTREE) || opertree[0])
 237                              ? opertree
 238                              : (browse_dir[0] ? browse_dir
 239                                 :gethomedir(NULL)), sizeof(dir));
 240                       dir[sizeof(dir)-1] = '\0';
 241                     }
 242                     else{
 243                         if(*fn){
 244                             int dirlen;
 245
 246                             dirlen = strlen(dir);
 247                             if(dirlen && dir[dirlen - 1] != C_FILESEP){
 248                               strncat(dir, S_FILESEP, sizeof(dir)-strlen(dir)-1);
 249                               dir[sizeof(dir)-1] = '\0';
 250                             }
 251
 252                             strncat(dir, fn, sizeof(dir)-strlen(dir)-1);
 253                             dir[sizeof(dir)-1] = '\0';
 254                             if(!isdir(dir, NULL, NULL))
 255                               dir[MIN(dirlen,sizeof(dir)-1)] = '\0';
 256                         }
 257                     }
 258
 259                     fname[0] = '\0';
 260                     if((s = FileBrowse(dir, sizeof(dir), fname, sizeof(fname),
 261                                        NULL, 0, FB_READ, NULL)) == 1){
 262                         if(gmode&MDSCUR){
 263                             emlwrite(_("Can't insert in restricted mode"),
 264                                      NULL);
 265                             sleep(2);
 266                         }
 267                         else{
 268                             size_t len;
 269
 270                             len = strlen(dir)+strlen(S_FILESEP)+strlen(fname);
 271                             if ((infile = (char *)malloc((len+1)*sizeof(char))) != NULL){
 272                               strncpy(infile, dir, len);
 273                               infile[len] = '\0';
 274                               strncat(infile, S_FILESEP, len+1-1-strlen(infile));
 275                               infile[len] = '\0';
 276                               strncat(infile, fname, len+1-1-strlen(infile));
 277                               infile[len] = '\0';
 278                               retval = ifile(infile);
 279                               free((char *) infile);
 280                             }
 281                             else {
 282                               emlwrite("Trouble allocating space for insert!"
 283                                        ,NULL);
 284                               sleep(3);
 285                             }
 286                         }
 287                         bye++;
 288                     }
 289                     else
 290                       fname[0] = '\0';
 291
 292                     pico_refresh(FALSE, 1);
 293                     if(s != 1){
 294                         update();               /* redraw on return */
 295                         continue;
 296                     }
 297                 }
 298
 299                 break;
 300
 301 #if     !defined(DOS) && !defined(MAC)
 302               case (CTRL|'Y') :
 303                 if(Pmaster && Pmaster->upload){
 304                     char tfname[NLINE];
 305
 306                     if(gmode&MDSCUR){
 307                         emlwrite(
 308                               _("\007Restricted mode disallows uploaded command"),
 309                               NULL);
 310                         return(0);
 311                     }
 312
 313                     tfname[0] = '\0';
 314                     retval = (*Pmaster->upload)(tfname, sizeof(tfname), NULL);
 315
 316                     pico_refresh(FALSE, 1);
 317                     update();
 318
 319                     if(retval){
 320                         retval = ifile(tfname);
 321                         bye++;
 322                     }
 323                     else
 324                       sleep(3);                 /* problem, show error! */
 325
 326                     if(tfname[0])               /* clean up temp file */
 327                       our_unlink(tfname);
 328                 }
 329                 else
 330                   (*term.t_beep)();             /* what? */
 331
 332                 break;
 333 #endif  /* !(DOS || MAC) */
 334               case HELPCH:
 335                 if(Pmaster){
 336                     VARS_TO_SAVE *saved_state;
 337
 338                     saved_state = save_pico_state();
 339                     (*Pmaster->helper)(msg ? Pmaster->ins_m_help
 340                                            : Pmaster->ins_help,
 341                                        _("Help for Insert File"), 1);
 342                     if(saved_state){
 343                         restore_pico_state(saved_state);
 344                         free_pico_state(saved_state);
 345                     }
 346                 }
 347                 else
 348                   pico_help(inshelptext, _("Help for Insert File"), 1);
 349               case (CTRL|'L'):
 350                 pico_refresh(FALSE, 1);
 351                 update();
 352                 continue;
 353               default:
 354                 ctrlg(FALSE, 0);
 355                 retval = s;
 356                 bye++;
 357             }
 358         }
 359     }
 360     curwp->w_flag |= WFMODE|WFHARD;
 361
 362     return(retval);
 363 }
 364
 365 /*
 366  * split out the file name from the path.
 367  * Copy path into dirbuf, return filename,
 368  * which is a pointer into orig_fname.
 369  *   is_for_browse - use browse dir if possible
 370  *      don't want to use it for TAB-completion
 371  */
 372 char *
 373 file_split(char *dirbuf, size_t dirbuflen, char *orig_fname, int is_for_browse)
 374 {
 375     char *p, *fn;
 376     size_t dirlen;
 377
 378     if(*orig_fname && (p = strrchr(orig_fname, C_FILESEP))){
 379         fn = p + 1;
 380         dirlen = p - orig_fname;
 381         if(p == orig_fname){
 382             strncpy(dirbuf, S_FILESEP, dirbuflen);
 383             dirbuf[dirbuflen-1] = '\0';
 384         }
 385 #ifdef  DOS
 386         else if(orig_fname[0] == C_FILESEP
 387                 || (isalpha((unsigned char)orig_fname[0])
 388                     && orig_fname[1] == ':')){
 389             if(orig_fname[1] == ':' && p == orig_fname+2)
 390               dirlen = fn - orig_fname;
 391
 392             dirlen = MIN(dirlen, dirbuflen-1);
 393             strncpy(dirbuf, orig_fname, dirlen);
 394             dirbuf[dirlen] = '\0';
 395         }
 396 #else
 397         else if (orig_fname[0] == C_FILESEP || orig_fname[0] == '~'){
 398             dirlen = MIN(dirlen, dirbuflen-1);
 399             strncpy(dirbuf, orig_fname, dirlen);
 400             dirbuf[dirlen] = '\0';
 401         }
 402 #endif
 403         else
 404           snprintf(dirbuf, dirbuflen, "%s%c%.*s",
 405                   (gmode & MDCURDIR)
 406                   ? ((is_for_browse && browse_dir[0]) ? browse_dir : ".")
 407                   : ((gmode & MDTREE) || opertree[0])
 408                   ? opertree
 409                   : ((is_for_browse && browse_dir[0])
 410                      ? browse_dir : gethomedir(NULL)),
 411                   C_FILESEP, (int) (p - orig_fname), orig_fname);
 412     }
 413     else{
 414         fn = orig_fname;
 415         strncpy(dirbuf, (gmode & MDCURDIR)
 416                ? ((is_for_browse && browse_dir[0]) ? browse_dir : ".")
 417                : ((gmode & MDTREE) || opertree[0])
 418                ? opertree
 419                : ((is_for_browse && browse_dir[0])
 420                   ? browse_dir : gethomedir(NULL)), dirbuflen);
 421         dirbuf[dirbuflen-1] = '\0';
 422     }
 423
 424     return fn;
 425 }
 426
 427
 428 static CBUF_S insmsgchar_cb;
 429
 430 void
 431 init_insmsgchar_cbuf(void)
 432 {
 433     insmsgchar_cb.cbuf[0] = '\0';
 434     insmsgchar_cb.cbufp = insmsgchar_cb.cbuf;
 435     insmsgchar_cb.cbufend = insmsgchar_cb.cbuf;
 436 }
 437
 438
 439 /*
 440  * This is called with a stream of UTF-8 characters.
 441  * We change that stream into UCS characters and insert
 442  * those characters.
 443  */
 444 int
 445 insmsgchar(int c)
 446 {
 447     if(c == '\n'){
 448         UCS *u;
 449
 450         lnewline();
 451         for(u = glo_quote_str; u && *u; u++)
 452           if(!linsert(1, *u))
 453             return(0);
 454     }
 455     else if(c != '\r'){                 /* ignore CR (likely CR of CRLF) */
 456         int outchars;
 457         UCS ucs;
 458
 459         if((outchars = utf8_to_ucs4_oneatatime(c, &insmsgchar_cb, &ucs, NULL)) != 0)
 460           if(!linsert(1, ucs))
 461             return(0);
 462     }
 463
 464     return(1);
 465 }
 466
 467
 468 /*
 469  * Read file "fname" into the current
 470  * buffer, blowing away any text found there. Called
 471  * by both the read and find commands. Return the final
 472  * status of the read. Also called by the mainline,
 473  * to read in a file specified on the command line as
 474  * an argument.
 475  */
 476 int
 477 readin(char fname[],            /* name of file to read */
 478        int lockfl,              /* check for file locks? */
 479        int rename)              /* don't rename if reading from, say, alt speller */
 480 {
 481         UCS  line[NLINE], *linep;
 482         long nline;
 483         int  s, done, newline;
 484
 485         curbp->b_linecnt = -1;                  /* Must be recalculated */
 486         if ((s = bclear(curbp)) != TRUE)        /* Might be old.        */
 487           return (s);
 488
 489         if(rename){
 490           strncpy(curbp->b_fname, fname, sizeof(curbp->b_fname));
 491           curbp->b_fname[sizeof(curbp->b_fname)-1] = '\0';
 492         }
 493
 494         if ((s=ffropen(fname)) != FIOSUC){      /* Hard file open.      */
 495             if(s == FIOFNF)                     /* File not found.      */
 496               emlwrite(_("New file"), NULL);
 497             else
 498               fioperr(s, fname);
 499         }
 500         else{
 501             size_t charsread = 0;
 502
 503             emlwrite(_("Reading file"), NULL);
 504             nline = 0L;
 505             done  = newline = 0;
 506             while(!done)
 507               if((s = ffgetline(line, NLINE, &charsread, 1)) == FIOEOF){
 508                   char b[200];
 509
 510                   curbp->b_flag &= ~(BFTEMP|BFCHG);
 511                   gotobob(FALSE, 1);
 512                   if(nline > 1)
 513                     snprintf(b, sizeof(b), _("Read %ld lines"), nline);
 514                   else
 515                     snprintf(b, sizeof(b), _("Read 1 line"));
 516
 517                   emlwrite(b, NULL);
 518
 519                   break;
 520               }
 521               else{
 522                   if(newline){
 523                       if(lnewline() == FALSE){
 524                         done++;
 525                         continue;
 526                       }
 527                       newline = 0;
 528                   }
 529
 530                   switch(s){
 531                     case FIOSUC :
 532                       nline++;
 533                       newline = 1;
 534
 535                     case FIOLNG :
 536                       for(linep = line; charsread-- > 0; linep++)
 537                         if(linsert(1, *linep) == FALSE) done++;
 538
 539                       break;
 540
 541                     default :
 542                       done++;
 543                       break;
 544                   }
 545               }
 546
 547             ffclose();                              /* Ignore errors.       */
 548         }
 549
 550         return(s != FIOERR && s != FIOFNF);             /* true if success */
 551 }
 552
 553
 554 /*
 555  * Ask for a file name, and write the
 556  * contents of the current buffer to that file.
 557  * Update the remembered file name and clear the
 558  * buffer changed flag. This handling of file names
 559  * is different from the earlier versions, and
 560  * is more compatable with Gosling EMACS than
 561  * with ITS EMACS. Bound to "C-X C-W".
 562  */
 563 int
 564 filewrite(int f, int n)
 565 {
 566         register WINDOW *wp;
 567         register int    s;
 568         char            fname[NFILEN];
 569         char            shows[NLINE], origshows[NLINE], *bufp;
 570         EXTRAKEYS       menu_write[10];
 571         EML             eml;
 572
 573         memset(&menu_write, 0, 10*sizeof(EXTRAKEYS));
 574         if(curbp->b_fname[0] != 0){
 575           strncpy(fname, curbp->b_fname, sizeof(curbp->b_fname));
 576           curbp->b_fname[sizeof(curbp->b_fname)-1] = '\0';
 577         }
 578         else
 579           fname[0] = '\0';
 580
 581         menu_write[0].name  = "^T";
 582         menu_write[0].label = N_("To Files");
 583         menu_write[0].key   = (CTRL|'T');
 584         menu_write[1].name  = "TAB";
 585         menu_write[1].label = N_("Complete");
 586         menu_write[1].key   = (CTRL|'I');
 587         menu_write[2].name  = NULL;
 588         for(;!(gmode & MDTOOL);){
 589             /* TRANSLATORS: Asking for name of file to write data into */
 590             s = mlreplyd_utf8(_("File Name to write : "), fname, NFILEN,
 591                          QDEFLT|QFFILE, menu_write);
 592
 593             switch(s){
 594               case FALSE:
 595                 if(!fname[0]){                  /* no file name to write to */
 596                     ctrlg(FALSE, 0);
 597                     return(s);
 598                 }
 599               case TRUE:
 600                 if((gmode & MDTREE) && !compresspath(opertree, fname, sizeof(fname))){
 601                     eml.s = opertree;
 602                     emlwrite(_("Can't write outside of %s: too many ..'s"), &eml);
 603                     sleep(2);
 604                     continue;
 605                 }
 606                 else{
 607                     fixpath(fname, sizeof(fname));      /*  fixup ~ in file name  */
 608                     if((gmode & MDTREE) && !in_oper_tree(fname)){
 609                         eml.s = opertree;
 610                         emlwrite(_("Can't write outside of %s"), &eml);
 611                         sleep(2);
 612                         continue;
 613                     }
 614                 }
 615
 616                 break;
 617
 618               case (CTRL|'I'):
 619                 {
 620                     char *fn, *p, dir[NFILEN];
 621                     int   l = NFILEN;
 622
 623                     dir[0] = '\0';
 624                     if(*fname && (p = strrchr(fname, C_FILESEP))){
 625                         fn = p + 1;
 626                         l -= fn - fname;
 627                         if(p == fname){
 628                           strncpy(dir, S_FILESEP, sizeof(dir));
 629                           dir[sizeof(dir)-1] = '\0';
 630                         }
 631 #ifdef  DOS
 632                         else if(fname[0] == C_FILESEP
 633                                  || (isalpha((unsigned char)fname[0])
 634                                      && fname[1] == ':'))
 635 #else
 636                         else if (fname[0] == C_FILESEP || fname[0] == '~')
 637 #endif
 638                         {
 639                             strncpy(dir, fname, MIN(p - fname, sizeof(dir)-1));
 640                             dir[MIN(p-fname, sizeof(dir)-1)] = '\0';
 641                         }
 642                         else
 643                           snprintf(dir, sizeof(dir), "%s%c%.*s",
 644                                   (gmode & MDCURDIR)
 645                                      ? "."
 646                                      : ((gmode & MDTREE) || opertree[0])
 647                                           ? opertree : gethomedir(NULL),
 648                                   C_FILESEP, (int) (p - fname), fname);
 649                     }
 650                     else{
 651                         fn = fname;
 652                         strncpy(dir, (gmode & MDCURDIR)
 653                                        ? "."
 654                                        : ((gmode & MDTREE) || opertree[0])
 655                                             ? opertree : gethomedir(NULL), sizeof(dir));
 656                         dir[sizeof(dir)-1] = '\0';
 657                     }
 658
 659                     if(!pico_fncomplete(dir, fn, sizeof(fname)-(fn-fname)))
 660                       (*term.t_beep)();
 661                 }
 662
 663                 continue;
 664
 665               case (CTRL|'T'):
 666                 /* If we have a file name, break up into path and file name.*/
 667                 *shows = 0;
 668                 if(*fname) {
 669                     if(isdir(fname, NULL, NULL)) {
 670                         /* fname is a directory. */
 671                         strncpy(shows, fname, sizeof(shows));
 672                         shows[sizeof(shows)-1] = '\0';
 673                         *fname = '\0';
 674                     }
 675                     else {
 676                         /* Find right most separator. */
 677                         bufp = strrchr (fname, C_FILESEP);
 678                         if (bufp != NULL) {
 679                             /* Copy directory part to 'shows', and file
 680                              * name part to front of 'fname'. */
 681                             *bufp = '\0';
 682                             strncpy(shows, fname, sizeof(shows));
 683                             shows[sizeof(shows)-1] = '\0';
 684                             strncpy(fname, bufp+1, MIN(strlen(bufp+1)+1, sizeof(fname)));
 685                             fname[sizeof(fname)-1] = '\0';
 686                         }
 687                     }
 688                 }
 689
 690                 /* If we did not end up with a valid directory, use home. */
 691                 if (!*shows || !isdir (shows, NULL, NULL)){
 692                   strncpy(shows, ((gmode & MDTREE) || opertree[0])
 693                          ? opertree
 694                          : (browse_dir[0] ? browse_dir
 695                             : gethomedir(NULL)), sizeof(shows));
 696                   shows[sizeof(shows)-1] = '\0';
 697                 }
 698
 699                 strncpy(origshows, shows, sizeof(origshows));
 700                 origshows[sizeof(origshows)-1] = '\0';
 701                 if ((s = FileBrowse(shows, sizeof(shows), fname, sizeof(fname), NULL, 0,
 702                                     FB_SAVE, NULL)) == 1) {
 703                   if (strlen(shows)+strlen(S_FILESEP)+strlen(fname) < NLINE){
 704                     strncat(shows, S_FILESEP, sizeof(shows)-strlen(shows)-1);
 705                     shows[sizeof(shows)-1] = '\0';
 706                     strncat(shows, fname, sizeof(shows)-strlen(shows)-1);
 707                     shows[sizeof(shows)-1] = '\0';
 708                     strncpy(fname, shows, sizeof(fname));
 709                     fname[sizeof(fname)-1] = '\0';
 710                   }
 711                   else {
 712                     emlwrite("Cannot write. File name too long!!",NULL);
 713                     sleep(3);
 714                   }
 715                 }
 716                 else if (s == 0 && strcmp(shows, origshows)){
 717                     strncat(shows, S_FILESEP, sizeof(shows)-strlen(shows)-1);
 718                     shows[sizeof(shows)-1] = '\0';
 719                     strncat(shows, fname, sizeof(shows)-strlen(shows)-1);
 720                     shows[sizeof(shows)-1] = '\0';
 721                     strncpy(fname, shows, sizeof(fname));
 722                     fname[sizeof(fname)-1] = '\0';
 723                 }
 724                 else if (s == -1){
 725                   emlwrite("Cannot write. File name too long!!",NULL);
 726                   sleep(3);
 727                 }
 728
 729                 pico_refresh(FALSE, 1);
 730                 update();
 731                 if(s == 1)
 732                   break;
 733                 else
 734                   continue;
 735
 736               case HELPCH:
 737                 pico_help(writehelp, "", 1);
 738               case (CTRL|'L'):
 739                 pico_refresh(FALSE, 1);
 740                 update();
 741                 continue;
 742
 743               default:
 744                 return(s);
 745                 break;
 746             }
 747
 748             if(strcmp(fname, curbp->b_fname) == 0)
 749                 break;
 750
 751             if((s=fexist(fname, "w", (off_t *)NULL)) == FIOSUC){
 752                                                     /*exists overwrite? */
 753
 754                 snprintf(shows, sizeof(shows), _("File \"%s\" exists, OVERWRITE"), fname);
 755                 if((s=mlyesno_utf8(shows, FALSE)) == TRUE)
 756                   break;
 757             }
 758             else if(s == FIOFNF){
 759                 break;                          /* go write it */
 760             }
 761             else{                               /* some error, can't write */
 762                 fioperr(s, fname);
 763                 return(ABORT);
 764             }
 765         }
 766
 767         emlwrite("Writing...", NULL);
 768
 769         if ((s=writeout(fname, 0)) != -1) {
 770                 if(!(gmode&MDTOOL)){
 771                     strncpy(curbp->b_fname, fname, sizeof(curbp->b_fname));
 772                     curbp->b_fname[sizeof(curbp->b_fname)-1] = '\0';
 773                     curbp->b_flag &= ~BFCHG;
 774
 775                     wp = wheadp;                    /* Update mode lines.   */
 776                     while (wp != NULL) {
 777                         if (wp->w_bufp == curbp)
 778                             if((Pmaster && s == TRUE) || Pmaster == NULL)
 779                                 wp->w_flag |= WFMODE;
 780                         wp = wp->w_wndp;
 781                     }
 782                 }
 783
 784                 if(s > 1){
 785                     eml.s = comatose(s);
 786                     emlwrite(_("Wrote %s lines"), &eml);
 787                 }
 788                 else
 789                   emlwrite(_("Wrote 1 line"), NULL);
 790         }
 791
 792         return ((s == -1) ? FALSE : TRUE);
 793 }
 794
 795
 796 /*
 797  * Save the contents of the current
 798  * buffer in its associatd file. No nothing
 799  * if nothing has changed (this may be a bug, not a
 800  * feature). Error if there is no remembered file
 801  * name for the buffer. Bound to "C-X C-S". May
 802  * get called by "C-Z".
 803  */
 804 int
 805 filesave(int f, int n)
 806 {
 807         register WINDOW *wp;
 808         register int    s;
 809         EML eml;
 810
 811         if (curbp->b_mode&MDVIEW)       /* don't allow this command if  */
 812                 return(rdonly());       /* we are in read only mode     */
 813         if ((curbp->b_flag&BFCHG) == 0)         /* Return, no changes.  */
 814                 return (TRUE);
 815         if (curbp->b_fname[0] == 0) {           /* Must have a name.    */
 816                 emlwrite(_("No file name"), NULL);
 817                 sleep(2);
 818                 return (FALSE);
 819         }
 820
 821         emlwrite("Writing...", NULL);
 822         if ((s=writeout(curbp->b_fname, 0)) != -1) {
 823                 curbp->b_flag &= ~BFCHG;
 824                 wp = wheadp;                    /* Update mode lines.   */
 825                 while (wp != NULL) {
 826                         if (wp->w_bufp == curbp)
 827                           if(Pmaster == NULL)
 828                                 wp->w_flag |= WFMODE;
 829                         wp = wp->w_wndp;
 830                 }
 831                 if(s > 1){
 832                     eml.s = comatose(s);
 833                     emlwrite(_("Wrote %s lines"), &eml);
 834                 }
 835                 else
 836                   emlwrite(_("Wrote 1 line"), NULL);
 837         }
 838         return (s);
 839 }
 840
 841
 842 /*
 843  * This function performs the details of file
 844  * writing. Uses the file management routines in the
 845  * "fileio.c" package. The number of lines written is
 846  * displayed. Sadly, it looks inside a LINE; provide
 847  * a macro for this. Most of the grief is error
 848  * checking of some sort.
 849  *
 850  * If the argument readonly is set, the file is created with user read
 851  * and write permission only if it doesn't already exist. Note that the
 852  * word readonly is misleading. It is user r/w permission only.
 853  *
 854  * CHANGES: 1 Aug 91: returns number of lines written or -1 on error, MSS
 855  */
 856 int
 857 writeout(char *fn, int readonly)
 858 {
 859         register int    s;
 860         register int    t;
 861         register LINE   *lp;
 862         register int    nline;
 863
 864         if (!((s = ffwopen(fn, readonly)) == FIOSUC && ffelbowroom()))
 865           return (-1);                          /* Open writes message. */
 866
 867         lp = lforw(curbp->b_linep);             /* First line.          */
 868         nline = 0;                              /* Number of lines.     */
 869         while (lp != curbp->b_linep) {
 870                 if ((s=ffputline(&lp->l_text[0], llength(lp))) != FIOSUC)
 871                         break;
 872                 ++nline;
 873                 lp = lforw(lp);
 874         }
 875
 876         t = ffclose();                  /* ffclose complains if error */
 877
 878         if(s == FIOSUC)
 879           s = t;                                /* report worst case */
 880
 881         return ((s == FIOSUC) ? nline : -1);
 882 }
 883
 884
 885 /*
 886  * writetmp - write a temporary file for message text, mindful of
 887  *            access restrictions and included text.  If n is true, include
 888  *            lines that indicated included message text, otw forget them
 889  *            If dir is non-null, put the temp file in that directory.
 890  */
 891 char *
 892 writetmp(int n, char *dir)
 893 {
 894         static   char   fn[NFILEN];
 895         register int    s;
 896         register int    t;
 897         register LINE   *lp;
 898         register int    nline;
 899
 900         tmpname(dir, fn);
 901
 902         /* Open writes message */
 903         if (!fn[0] || (s=ffwopen(fn, TRUE)) != FIOSUC){
 904             if(fn[0])
 905               our_unlink(fn);
 906
 907             return(NULL);
 908         }
 909
 910         lp = lforw(curbp->b_linep);             /* First line.          */
 911         nline = 0;                              /* Number of lines.     */
 912         while (lp != curbp->b_linep) {
 913             if(n || (!n && lp->l_text[0].c != '>'))
 914               if ((s=ffputline(&lp->l_text[0], llength(lp))) != FIOSUC)
 915                 break;
 916
 917             ++nline;
 918             lp = lforw(lp);
 919         }
 920
 921         t = ffclose();                  /* ffclose complains if error */
 922
 923         if(s == FIOSUC)
 924           s = t;                                /* remember worst case */
 925
 926         if (s != FIOSUC){                       /* Some sort of error.  */
 927             our_unlink(fn);
 928             return(NULL);
 929         }
 930
 931         return(fn);
 932 }
 933
 934
 935 /*
 936  * Insert file "fname" into the current
 937  * buffer, Called by insert file command. Return the final
 938  * status of the read.
 939  */
 940 int
 941 ifile(char fname[])
 942 {
 943         UCS  line[NLINE], *linep;
 944         long nline;
 945         int  s, done, newline;
 946         size_t charsread = 0;
 947         EML eml;
 948
 949         if ((s=ffropen(fname)) != FIOSUC){      /* Hard file open.      */
 950             fioperr(s, fname);
 951             return(FALSE);
 952         }
 953
 954         gotobol(FALSE, 1);
 955
 956         curbp->b_flag |= BFCHG;                 /* we have changed      */
 957         curbp->b_flag &= ~BFTEMP;               /* and are not temporary*/
 958         curbp->b_linecnt = -1;                  /* must be recalculated */
 959
 960         eml.s = fname;
 961         emlwrite(_("Inserting %s."), &eml);
 962         done = newline = 0;
 963         nline = 0L;
 964         while(!done)
 965           if((s = ffgetline(line, NLINE, &charsread, 1)) == FIOEOF){
 966               char b[200];
 967
 968               if(llength(curwp->w_dotp) > curwp->w_doto)
 969                 lnewline();
 970               else
 971                 forwchar(FALSE, 1);
 972
 973               if(nline > 1)
 974                 snprintf(b, sizeof(b), _("Inserted %ld lines"), nline);
 975               else
 976                 snprintf(b, sizeof(b), _("Inserted 1 line"));
 977
 978               emlwrite(b, NULL);
 979               break;
 980           }
 981           else{
 982               if(newline){
 983                 if(lnewline() == FALSE){
 984                    done++;
 985                    continue;
 986                 }
 987                 newline = 0;
 988               }
 989
 990               switch(s){
 991                 case FIOSUC :                   /* copy line into buf */
 992                   nline++;
 993                   newline = 1;
 994
 995                 case FIOLNG :
 996                   for(linep = line; charsread-- > 0; linep++)
 997                     if(linsert(1, *linep) == FALSE) done++;
 998
 999                   break;
1000
1001                 default :
1002                   done++;
1003               }
1004           }
1005
1006         ffclose();                              /* Ignore errors.       */
1007
1008         return(s != FIOERR);
1009 }
1010
1011
1012 /*
1013  * pico_fncomplete - pico's function to complete the given file name
1014  */
1015 int
1016 pico_fncomplete(char *dirarg, char *fn, size_t fnlen)
1017 {
1018     char *p, *dlist, tmp[NLINE], dir[NLINE];
1019     int   n, i, match = -1;
1020 #ifdef  DOS
1021 #define FILECMP(x, y)   (toupper((unsigned char)(x))\
1022                                 == toupper((unsigned char)(y)))
1023 #else
1024 #define FILECMP(x, y)   ((x) == (y))
1025 #endif
1026
1027     strncpy(dir, dirarg, sizeof(dir));
1028     dir[sizeof(dir)-1] = '\0';
1029     pfnexpand(dir, sizeof(dir));
1030     if(*fn && (dlist = p = getfnames(dir, fn, &n, NULL, 0))){
1031         memset(tmp, 0, sizeof(tmp));
1032         while(n--){                     /* any names in it */
1033             for(i = 0; i < sizeof(tmp)-1 && fn[i] && FILECMP(p[i], fn[i]); i++)
1034               ;
1035
1036             if(!fn[i]){                 /* match or more? */
1037                 if(tmp[0]){
1038                     for(; p[i] && FILECMP(p[i], tmp[i]); i++)
1039                       ;
1040
1041                     match = !p[i] && !tmp[i];
1042                     tmp[i] = '\0';      /* longest common string */
1043                 }
1044                 else{
1045                     match = 1;          /* may be it!?! */
1046                     strncpy(tmp,  p, sizeof(tmp));
1047                     tmp[sizeof(tmp)-1] = '\0';
1048                 }
1049             }
1050
1051             p += strlen(p) + 1;
1052         }
1053
1054         free(dlist);
1055     }
1056
1057     if(match >= 0){
1058         strncpy(fn, tmp, fnlen);
1059         fn[fnlen-1] = '\0';
1060         if(match == 1){
1061           if ((strlen(dir)+strlen(S_FILESEP)+strlen(fn)) < sizeof(dir)){
1062             strncat(dir, S_FILESEP, sizeof(dir)-strlen(dir)-1);
1063             dir[sizeof(dir)-1] = '\0';
1064             strncat(dir, fn, sizeof(dir)-strlen(dir)-1);
1065             dir[sizeof(dir)-1] = '\0';
1066             if(isdir(dir, NULL, NULL)){
1067                 strncat(fn, S_FILESEP, fnlen-strlen(fn)-1);
1068                 fn[fnlen-1] = '\0';
1069             }
1070           }
1071           else{
1072             emlwrite("File name too BIG!!",0);
1073             sleep(3);
1074             *fn = '\0';
1075           }
1076
1077         }
1078     }
1079
1080     return(match == 1);
1081 }
1082
1083
1084 /*
1085  * in_oper_tree - returns true if file "f" does reside in opertree
1086  */
1087 int
1088 in_oper_tree(char *f)
1089 {
1090     int end = strlen(opertree);
1091
1092     return(!strncmp(opertree, f, end)
1093             && (opertree[end-1] == '/'
1094                 || opertree[end-1] == '\\'
1095                 || f[end] == '\0'
1096                 || f[end] == '/'
1097                 || f[end] == '\\'));
1098 }