contrib/tcsh/ed.inputl.c

   1 /* $Header: /p/tcsh/cvsroot/tcsh/ed.inputl.c,v 3.66 2006/11/29 22:32:24 christos Exp $ */
   2 /*
   3  * ed.inputl.c: Input line handling.
   4  */
   5 /*-
   6  * Copyright (c) 1980, 1991 The Regents of the University of California.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33 #include "sh.h"
  34
  35 RCSID("$tcsh: ed.inputl.c,v 3.66 2006/11/29 22:32:24 christos Exp $")
  36
  37 #include "ed.h"
  38 #include "ed.defns.h"           /* for the function names */
  39 #include "tw.h"                 /* for twenex stuff */
  40
  41 #define OKCMD INT_MAX
  42
  43 /* ed.inputl -- routines to get a single line from the input. */
  44
  45 extern int MapsAreInited;
  46
  47 /* mismatched first character */
  48 static Char mismatch[] =
  49     {'!', '^' , '\\', '-', '%', '\0', '"', '\'', '`', '\0' };
  50
  51 static  int     Repair          (void);
  52 static  int     GetNextCommand  (KEYCMD *, Char *);
  53 static  int     SpellLine       (int);
  54 static  int     CompleteLine    (void);
  55 static  void    RunCommand      (Char *);
  56 static  void    doeval1         (Char **);
  57
  58 static int rotate = 0;
  59
  60
  61 static int
  62 Repair(void)
  63 {
  64     if (NeedsRedraw) {
  65         ClearLines();
  66         ClearDisp();
  67         NeedsRedraw = 0;
  68     }
  69     Refresh();
  70     Argument = 1;
  71     DoingArg = 0;
  72     curchoice = -1;
  73     return (int) (LastChar - InputBuf);
  74 }
  75
  76 /* CCRETVAL */
  77 int
  78 Inputl(void)
  79 {
  80     CCRETVAL retval;
  81     KEYCMD  cmdnum = 0;
  82     unsigned char tch;          /* the place where read() goes */
  83     Char    ch;
  84     int     num;                /* how many chars we have read at NL */
  85     int     expnum;
  86     struct varent *crct = inheredoc ? NULL : adrof(STRcorrect);
  87     struct varent *autol = adrof(STRautolist);
  88     struct varent *matchbeep = adrof(STRmatchbeep);
  89     struct varent *imode = adrof(STRinputmode);
  90     Char   *SaveChar, *CorrChar;
  91     int     matchval;           /* from tenematch() */
  92     COMMAND fn;
  93     int curlen = 0;
  94     int newlen;
  95     int idx;
  96
  97     if (!MapsAreInited)         /* double extra just in case */
  98         ed_InitMaps();
  99
 100     ClearDisp();                /* reset the display stuff */
 101     ResetInLine(0);             /* reset the input pointers */
 102     if (GettingInput)
 103         MacroLvl = -1;          /* editor was interrupted during input */
 104
 105     if (imode && imode->vec != NULL) {
 106         if (!Strcmp(*(imode->vec), STRinsert))
 107             inputmode = MODE_INSERT;
 108         else if (!Strcmp(*(imode->vec), STRoverwrite))
 109             inputmode = MODE_REPLACE;
 110     }
 111
 112 #if defined(FIONREAD) && !defined(OREO)
 113     if (!Tty_raw_mode && MacroLvl < 0) {
 114 # ifdef SUNOS4
 115         long chrs = 0;
 116 # else /* !SUNOS4 */
 117         /*
 118          * *Everyone* else has an int, but SunOS wants long!
 119          * This breaks where int != long (alpha)
 120          */
 121         int chrs = 0;
 122 # endif /* SUNOS4 */
 123
 124         (void) ioctl(SHIN, FIONREAD, (ioctl_t) & chrs);
 125         if (chrs == 0) {
 126             if (Rawmode() < 0)
 127                 return 0;
 128         }
 129     }
 130 #endif /* FIONREAD && !OREO */
 131
 132     GettingInput = 1;
 133     NeedsRedraw = 0;
 134     tellwhat = 0;
 135
 136     if (RestoreSaved) {
 137         copyn(InputBuf, SavedBuf.s, INBUFSIZE);/*FIXBUF*/
 138         LastChar = InputBuf + LastSaved;
 139         Cursor = InputBuf + CursSaved;
 140         Hist_num = HistSaved;
 141         HistSaved = 0;
 142         RestoreSaved = 0;
 143     }
 144     if (HistSaved) {
 145         Hist_num = HistSaved;
 146         GetHistLine();
 147         HistSaved = 0;
 148     }
 149     if (Expand) {
 150         (void) e_up_hist(0);
 151         Expand = 0;
 152     }
 153     Refresh();                  /* print the prompt */
 154
 155     for (num = OKCMD; num == OKCMD;) {  /* while still editing this line */
 156 #ifdef DEBUG_EDIT
 157         if (Cursor > LastChar)
 158             xprintf("Cursor > LastChar\r\n");
 159         if (Cursor < InputBuf)
 160             xprintf("Cursor < InputBuf\r\n");
 161         if (Cursor > InputLim)
 162             xprintf("Cursor > InputLim\r\n");
 163         if (LastChar > InputLim)
 164             xprintf("LastChar > InputLim\r\n");
 165         if (InputLim != &InputBuf[INBUFSIZE - 2])/*FIXBUF*/
 166             xprintf("InputLim != &InputBuf[INBUFSIZE-2]\r\n");
 167         if ((!DoingArg) && (Argument != 1))
 168             xprintf("(!DoingArg) && (Argument != 1)\r\n");
 169         if (CcKeyMap[0] == 0)
 170             xprintf("CcKeyMap[0] == 0 (maybe not inited)\r\n");
 171 #endif
 172
 173         /* if EOF or error */
 174         if ((num = GetNextCommand(&cmdnum, &ch)) != OKCMD) {
 175             break;
 176         }
 177
 178         if (cmdnum >= NumFuns) {/* BUG CHECK command */
 179 #ifdef DEBUG_EDIT
 180             xprintf(CGETS(6, 1, "ERROR: illegal command from key 0%o\r\n"), ch);
 181 #endif
 182             continue;           /* try again */
 183         }
 184
 185         /* now do the real command */
 186         retval = (*CcFuncTbl[cmdnum]) (ch);
 187
 188         /* save the last command here */
 189         LastCmd = cmdnum;
 190
 191         /* make sure fn is initialized */
 192         fn = (retval == CC_COMPLETE_ALL) ? LIST_ALL : LIST;
 193
 194         /* use any return value */
 195         switch (retval) {
 196
 197         case CC_REFRESH:
 198             Refresh();
 199             /*FALLTHROUGH*/
 200         case CC_NORM:           /* normal char */
 201             Argument = 1;
 202             DoingArg = 0;
 203             /*FALLTHROUGH*/
 204         case CC_ARGHACK:        /* Suggested by Rich Salz */
 205             /* <rsalz@pineapple.bbn.com> */
 206             curchoice = -1;
 207             curlen = (int) (LastChar - InputBuf);
 208             break;              /* keep going... */
 209
 210         case CC_EOF:            /* end of file typed */
 211             curchoice = -1;
 212             curlen = (int) (LastChar - InputBuf);
 213             num = 0;
 214             break;
 215
 216         case CC_WHICH:          /* tell what this command does */
 217             tellwhat = 1;
 218             *LastChar++ = '\n'; /* for the benifit of CSH */
 219             num = (int) (LastChar - InputBuf);  /* number characters read */
 220             break;
 221
 222         case CC_NEWLINE:        /* normal end of line */
 223             curlen = 0;
 224             curchoice = -1;
 225             matchval = 1;
 226             if (crct && crct->vec != NULL && (!Strcmp(*(crct->vec), STRcmd) ||
 227                          !Strcmp(*(crct->vec), STRall))) {
 228                 Char *Origin;
 229
 230                 PastBottom();
 231                 Origin = Strsave(InputBuf);
 232                 cleanup_push(Origin, xfree);
 233                 SaveChar = LastChar;
 234                 if (SpellLine(!Strcmp(*(crct->vec), STRcmd)) == 1) {
 235                     Char *Change;
 236
 237                     PastBottom();
 238                     Change = Strsave(InputBuf);
 239                     cleanup_push(Change, xfree);
 240                     *Strchr(Change, '\n') = '\0';
 241                     CorrChar = LastChar;        /* Save the corrected end */
 242                     LastChar = InputBuf;        /* Null the current line */
 243                     SoundBeep();
 244                     printprompt(2, short2str(Change));
 245                     cleanup_until(Change);
 246                     Refresh();
 247                     if (xread(SHIN, &tch, 1) < 0) {
 248 #ifdef convex
 249                         /*
 250                          * need to print error message in case file
 251                          * is migrated
 252                          */
 253                         if (errno)
 254                             stderror(ERR_SYSTEM, progname, strerror(errno));
 255 #else
 256                         cleanup_until(Origin);
 257                         break;
 258 #endif
 259                     }
 260                     ch = tch;
 261                     if (ch == 'y' || ch == ' ') {
 262                         LastChar = CorrChar;    /* Restore the corrected end */
 263                         xprintf(CGETS(6, 2, "yes\n"));
 264                     }
 265                     else {
 266                         Strcpy(InputBuf, Origin);
 267                         LastChar = SaveChar;
 268                         if (ch == 'e') {
 269                             xprintf(CGETS(6, 3, "edit\n"));
 270                             *LastChar-- = '\0';
 271                             Cursor = LastChar;
 272                             printprompt(3, NULL);
 273                             ClearLines();
 274                             ClearDisp();
 275                             Refresh();
 276                             cleanup_until(Origin);
 277                             break;
 278                         }
 279                         else if (ch == 'a') {
 280                             xprintf(CGETS(6, 4, "abort\n"));
 281                             LastChar = InputBuf;   /* Null the current line */
 282                             Cursor = LastChar;
 283                             printprompt(0, NULL);
 284                             Refresh();
 285                             cleanup_until(Origin);
 286                             break;
 287                         }
 288                         xprintf(CGETS(6, 5, "no\n"));
 289                     }
 290                     flush();
 291                 }
 292                 cleanup_until(Origin);
 293             } else if (crct && crct->vec != NULL &&
 294                 !Strcmp(*(crct->vec), STRcomplete)) {
 295                 if (LastChar > InputBuf && LastChar[-1] == '\n') {
 296                     LastChar[-1] = '\0';
 297                     LastChar--;
 298                     Cursor = LastChar;
 299                 }
 300                 match_unique_match = 1;  /* match unique matches */
 301                 matchval = CompleteLine();
 302                 match_unique_match = 0;
 303                 curlen = (int) (LastChar - InputBuf);
 304                 if (matchval != 1) {
 305                     PastBottom();
 306                 }
 307                 if (matchval == 0) {
 308                     xprintf(CGETS(6, 6, "No matching command\n"));
 309                 } else if (matchval == 2) {
 310                     xprintf(CGETS(6, 7, "Ambiguous command\n"));
 311                 }
 312                 if (NeedsRedraw) {
 313                     ClearLines();
 314                     ClearDisp();
 315                     NeedsRedraw = 0;
 316                 }
 317                 Refresh();
 318                 Argument = 1;
 319                 DoingArg = 0;
 320                 if (matchval == 1) {
 321                     PastBottom();
 322                     *LastChar++ = '\n';
 323                     *LastChar = '\0';
 324                 }
 325                 curlen = (int) (LastChar - InputBuf);
 326             }
 327             else
 328                 PastBottom();
 329
 330             if (matchval == 1) {
 331                 tellwhat = 0;   /* just in case */
 332                 Hist_num = 0;   /* for the history commands */
 333                 /* return the number of chars read */
 334                 num = (int) (LastChar - InputBuf);
 335                 /*
 336                  * For continuation lines, we set the prompt to prompt 2
 337                  */
 338                 printprompt(1, NULL);
 339             }
 340             break;
 341
 342         case CC_CORRECT:
 343             if (tenematch(InputBuf, Cursor - InputBuf, SPELL) < 0)
 344                 SoundBeep();            /* Beep = No match/ambiguous */
 345             curlen = Repair();
 346             break;
 347
 348         case CC_CORRECT_L:
 349             if (SpellLine(FALSE) < 0)
 350                 SoundBeep();            /* Beep = No match/ambiguous */
 351             curlen = Repair();
 352             break;
 353
 354
 355         case CC_COMPLETE:
 356         case CC_COMPLETE_ALL:
 357         case CC_COMPLETE_FWD:
 358         case CC_COMPLETE_BACK:
 359             switch (retval) {
 360             case CC_COMPLETE:
 361                 fn = RECOGNIZE;
 362                 curlen = (int) (LastChar - InputBuf);
 363                 curchoice = -1;
 364                 rotate = 0;
 365                 break;
 366             case CC_COMPLETE_ALL:
 367                 fn = RECOGNIZE_ALL;
 368                 curlen = (int) (LastChar - InputBuf);
 369                 curchoice = -1;
 370                 rotate = 0;
 371                 break;
 372             case CC_COMPLETE_FWD:
 373                 fn = RECOGNIZE_SCROLL;
 374                 curchoice++;
 375                 rotate = 1;
 376                 break;
 377             case CC_COMPLETE_BACK:
 378                 fn = RECOGNIZE_SCROLL;
 379                 curchoice--;
 380                 rotate = 1;
 381                 break;
 382             default:
 383                 abort();
 384             }
 385             if (InputBuf[curlen] && rotate) {
 386                 newlen = (int) (LastChar - InputBuf);
 387                 for (idx = (int) (Cursor - InputBuf);
 388                      idx <= newlen; idx++)
 389                         InputBuf[idx - newlen + curlen] =
 390                         InputBuf[idx];
 391                 LastChar = InputBuf + curlen;
 392                 Cursor = Cursor - newlen + curlen;
 393             }
 394             curlen = (int) (LastChar - InputBuf);
 395
 396
 397             if (adrof(STRautoexpand))
 398                 (void) e_expand_history(0);
 399             /*
 400              * Modified by Martin Boyer (gamin@ireq-robot.hydro.qc.ca):
 401              * A separate variable now controls beeping after
 402              * completion, independently of autolisting.
 403              */
 404             expnum = (int) (Cursor - InputBuf);
 405             switch (matchval = tenematch(InputBuf, Cursor-InputBuf, fn)){
 406             case 1:
 407                 if (non_unique_match && matchbeep && matchbeep->vec != NULL &&
 408                     (Strcmp(*(matchbeep->vec), STRnotunique) == 0))
 409                     SoundBeep();
 410                 break;
 411             case 0:
 412                 if (matchbeep && matchbeep->vec != NULL) {
 413                     if (Strcmp(*(matchbeep->vec), STRnomatch) == 0 ||
 414                         Strcmp(*(matchbeep->vec), STRambiguous) == 0 ||
 415                         Strcmp(*(matchbeep->vec), STRnotunique) == 0)
 416                         SoundBeep();
 417                 }
 418                 else
 419                     SoundBeep();
 420                 break;
 421             default:
 422                 if (matchval < 0) {     /* Error from tenematch */
 423                     curchoice = -1;
 424                     SoundBeep();
 425                     break;
 426                 }
 427                 if (matchbeep && matchbeep->vec != NULL) {
 428                     if ((Strcmp(*(matchbeep->vec), STRambiguous) == 0 ||
 429                          Strcmp(*(matchbeep->vec), STRnotunique) == 0))
 430                         SoundBeep();
 431                 }
 432                 else
 433                     SoundBeep();
 434                 /*
 435                  * Addition by David C Lawrence <tale@pawl.rpi.edu>: If an
 436                  * attempted completion is ambiguous, list the choices.
 437                  * (PWP: this is the best feature addition to tcsh I have
 438                  * seen in many months.)
 439                  */
 440                 if (autol && autol->vec != NULL &&
 441                     (Strcmp(*(autol->vec), STRambiguous) != 0 ||
 442                                      expnum == Cursor - InputBuf)) {
 443                     if (adrof(STRhighlight) && MarkIsSet) {
 444                         /* clear highlighting before showing completions */
 445                         MarkIsSet = 0;
 446                         ClearLines();
 447                         ClearDisp();
 448                         Refresh();
 449                         MarkIsSet = 1;
 450                     }
 451                     PastBottom();
 452                     fn = (retval == CC_COMPLETE_ALL) ? LIST_ALL : LIST;
 453                     (void) tenematch(InputBuf, Cursor-InputBuf, fn);
 454                 }
 455                 break;
 456             }
 457             if (NeedsRedraw) {
 458                 PastBottom();
 459                 ClearLines();
 460                 ClearDisp();
 461                 NeedsRedraw = 0;
 462             }
 463             Refresh();
 464             Argument = 1;
 465             DoingArg = 0;
 466             break;
 467
 468         case CC_LIST_CHOICES:
 469         case CC_LIST_ALL:
 470             if (InputBuf[curlen] && rotate) {
 471                 newlen = (int) (LastChar - InputBuf);
 472                 for (idx = (int) (Cursor - InputBuf);
 473                      idx <= newlen; idx++)
 474                         InputBuf[idx - newlen + curlen] =
 475                         InputBuf[idx];
 476                 LastChar = InputBuf + curlen;
 477                 Cursor = Cursor - newlen + curlen;
 478             }
 479             curlen = (int) (LastChar - InputBuf);
 480             if (curchoice >= 0)
 481                 curchoice--;
 482
 483             fn = (retval == CC_LIST_ALL) ? LIST_ALL : LIST;
 484             /* should catch ^C here... */
 485             if (tenematch(InputBuf, Cursor - InputBuf, fn) < 0)
 486                 SoundBeep();
 487             Refresh();
 488             Argument = 1;
 489             DoingArg = 0;
 490             break;
 491
 492
 493         case CC_LIST_GLOB:
 494             if (tenematch(InputBuf, Cursor - InputBuf, GLOB) < 0)
 495                 SoundBeep();
 496             curlen = Repair();
 497             break;
 498
 499         case CC_EXPAND_GLOB:
 500             if (tenematch(InputBuf, Cursor - InputBuf, GLOB_EXPAND) <= 0)
 501                 SoundBeep();            /* Beep = No match */
 502             curlen = Repair();
 503             break;
 504
 505         case CC_NORMALIZE_PATH:
 506             if (tenematch(InputBuf, Cursor - InputBuf, PATH_NORMALIZE) <= 0)
 507                 SoundBeep();            /* Beep = No match */
 508             curlen = Repair();
 509             break;
 510
 511         case CC_EXPAND_VARS:
 512             if (tenematch(InputBuf, Cursor - InputBuf, VARS_EXPAND) <= 0)
 513                 SoundBeep();            /* Beep = No match */
 514             curlen = Repair();
 515             break;
 516
 517         case CC_NORMALIZE_COMMAND:
 518             if (tenematch(InputBuf, Cursor - InputBuf, COMMAND_NORMALIZE) <= 0)
 519                 SoundBeep();            /* Beep = No match */
 520             curlen = Repair();
 521             break;
 522
 523         case CC_HELPME:
 524             xputchar('\n');
 525             /* should catch ^C here... */
 526             (void) tenematch(InputBuf, LastChar - InputBuf, PRINT_HELP);
 527             Refresh();
 528             Argument = 1;
 529             DoingArg = 0;
 530             curchoice = -1;
 531             curlen = (int) (LastChar - InputBuf);
 532             break;
 533
 534         case CC_FATAL:          /* fatal error, reset to known state */
 535 #ifdef DEBUG_EDIT
 536             xprintf(CGETS(7, 8, "*** editor fatal ERROR ***\r\n\n"));
 537 #endif                          /* DEBUG_EDIT */
 538             /* put (real) cursor in a known place */
 539             ClearDisp();        /* reset the display stuff */
 540             ResetInLine(1);     /* reset the input pointers */
 541             Refresh();          /* print the prompt again */
 542             Argument = 1;
 543             DoingArg = 0;
 544             curchoice = -1;
 545             curlen = (int) (LastChar - InputBuf);
 546             break;
 547
 548         case CC_ERROR:
 549         default:                /* functions we don't know about */
 550             if (adrof(STRhighlight)) {
 551                 ClearLines();
 552                 ClearDisp();
 553                 Refresh();
 554             }
 555             DoingArg = 0;
 556             Argument = 1;
 557             SoundBeep();
 558             flush();
 559             curchoice = -1;
 560             curlen = (int) (LastChar - InputBuf);
 561             break;
 562         }
 563     }
 564     (void) Cookedmode();        /* make sure the tty is set up correctly */
 565     GettingInput = 0;
 566     flush();                    /* flush any buffered output */
 567     return num;
 568 }
 569
 570 void
 571 PushMacro(Char *str)
 572 {
 573     if (str != NULL && MacroLvl + 1 < MAXMACROLEVELS) {
 574         MacroLvl++;
 575         KeyMacro[MacroLvl] = str;
 576     }
 577     else {
 578         SoundBeep();
 579         flush();
 580     }
 581 }
 582
 583 struct eval1_state
 584 {
 585     Char **evalvec, *evalp;
 586 };
 587
 588 static void
 589 eval1_cleanup(void *xstate)
 590 {
 591     struct eval1_state *state;
 592
 593     state = xstate;
 594     evalvec = state->evalvec;
 595     evalp = state->evalp;
 596     doneinp = 0;
 597 }
 598
 599 /*
 600  * Like eval, only using the current file descriptors
 601  */
 602 static void
 603 doeval1(Char **v)
 604 {
 605     struct eval1_state state;
 606     Char  **gv;
 607     int gflag;
 608
 609     gflag = tglob(v);
 610     if (gflag) {
 611         gv = v = globall(v, gflag);
 612         if (v == 0)
 613             stderror(ERR_NOMATCH);
 614         v = copyblk(v);
 615     }
 616     else {
 617         gv = NULL;
 618         v = copyblk(v);
 619         trim(v);
 620     }
 621     if (gv)
 622         cleanup_push(gv, blk_cleanup);
 623
 624     state.evalvec = evalvec;
 625     state.evalp = evalp;
 626     evalvec = v;
 627     evalp = 0;
 628     cleanup_push(&state, eval1_cleanup);
 629     process(0);
 630     cleanup_until(&state);
 631     if (gv)
 632         cleanup_until(gv);
 633 }
 634
 635 static void
 636 RunCommand(Char *str)
 637 {
 638     Char *cmd[2];
 639
 640     xputchar('\n');     /* Start on a clean line */
 641
 642     cmd[0] = str;
 643     cmd[1] = NULL;
 644
 645     (void) Cookedmode();
 646     GettingInput = 0;
 647
 648     doeval1(cmd);
 649
 650     (void) Rawmode();
 651     GettingInput = 1;
 652
 653     ClearLines();
 654     ClearDisp();
 655     NeedsRedraw = 0;
 656     Refresh();
 657 }
 658
 659 static int
 660 GetNextCommand(KEYCMD *cmdnum, Char *ch)
 661 {
 662     KEYCMD  cmd = 0;
 663     int     num;
 664
 665     while (cmd == 0 || cmd == F_XKEY) {
 666         if ((num = GetNextChar(ch)) != 1) {     /* if EOF or error */
 667             return num;
 668         }
 669 #ifdef  KANJI
 670         if (
 671 #ifdef DSPMBYTE
 672              _enable_mbdisp &&
 673 #else
 674              MB_LEN_MAX == 1 &&
 675 #endif
 676              !adrof(STRnokanji) && (*ch & META)) {
 677             MetaNext = 0;
 678             cmd = F_INSERT;
 679             break;
 680         }
 681         else
 682 #endif /* KANJI */
 683         if (MetaNext) {
 684             MetaNext = 0;
 685             *ch |= META;
 686         }
 687         /* XXX: This needs to be fixed so that we don't just truncate
 688          * the character, we unquote it.
 689          */
 690         if (*ch < NT_NUM_KEYS)
 691             cmd = CurrentKeyMap[*ch];
 692         else
 693 #ifdef WINNT_NATIVE
 694             cmd = CurrentKeyMap[(unsigned char) *ch];
 695 #else
 696             cmd = F_INSERT;
 697 #endif
 698         if (cmd == F_XKEY) {
 699             XmapVal val;
 700             CStr cstr;
 701             cstr.buf = ch;
 702             cstr.len = 1;
 703             switch (GetXkey(&cstr, &val)) {
 704             case XK_CMD:
 705                 cmd = val.cmd;
 706                 break;
 707             case XK_STR:
 708                 PushMacro(val.str.buf);
 709                 break;
 710             case XK_EXE:
 711                 RunCommand(val.str.buf);
 712                 break;
 713             default:
 714                 abort();
 715                 break;
 716             }
 717         }
 718         if (!AltKeyMap)
 719             CurrentKeyMap = CcKeyMap;
 720     }
 721     *cmdnum = cmd;
 722     return OKCMD;
 723 }
 724
 725 static Char ungetchar;
 726 static int haveungetchar;
 727
 728 void
 729 UngetNextChar(Char cp)
 730 {
 731     ungetchar = cp;
 732     haveungetchar = 1;
 733 }
 734
 735 int
 736 GetNextChar(Char *cp)
 737 {
 738     int num_read;
 739     int     tried = 0;
 740     char cbuf[MB_LEN_MAX];
 741     size_t cbp;
 742
 743     if (haveungetchar) {
 744         haveungetchar = 0;
 745         *cp = ungetchar;
 746         return 1;
 747     }
 748     for (;;) {
 749         if (MacroLvl < 0) {
 750             if (!Load_input_line())
 751                 break;
 752         }
 753         if (*KeyMacro[MacroLvl] == 0) {
 754             MacroLvl--;
 755             continue;
 756         }
 757         *cp = *KeyMacro[MacroLvl]++ & CHAR;
 758         if (*KeyMacro[MacroLvl] == 0) { /* Needed for QuoteMode On */
 759             MacroLvl--;
 760         }
 761         return (1);
 762     }
 763
 764     if (Rawmode() < 0)          /* make sure the tty is set up correctly */
 765         return 0;               /* oops: SHIN was closed */
 766
 767 #ifdef WINNT_NATIVE
 768     __nt_want_vcode = 1;
 769 #endif /* WINNT_NATIVE */
 770 #ifdef SIG_WINDOW
 771     if (windowchg)
 772         (void) check_window_size(0);    /* for window systems */
 773 #endif /* SIG_WINDOW */
 774     cbp = 0;
 775     for (;;) {
 776         while ((num_read = xread(SHIN, cbuf + cbp, 1)) == -1) {
 777             if (!tried && fixio(SHIN, errno) != -1)
 778                 tried = 1;
 779             else {
 780 # ifdef convex
 781                 /* need to print error message in case the file is migrated */
 782                 stderror(ERR_SYSTEM, progname, strerror(errno));
 783 # endif  /* convex */
 784 # ifdef WINNT_NATIVE
 785                 __nt_want_vcode = 0;
 786 # endif /* WINNT_NATIVE */
 787                 *cp = '\0'; /* Loses possible partial character */
 788                 return -1;
 789             }
 790         }
 791         if (AsciiOnly) {
 792             *cp = (unsigned char)*cbuf;
 793         } else {
 794             cbp++;
 795             if (normal_mbtowc(cp, cbuf, cbp) == -1) {
 796                 reset_mbtowc();
 797                 if (cbp < MB_CUR_MAX)
 798                     continue; /* Maybe a partial character */
 799                 /* And drop the following bytes, if any */
 800                 *cp = (unsigned char)*cbuf | INVALID_BYTE;
 801             }
 802         }
 803         break;
 804     }
 805 #ifdef WINNT_NATIVE
 806     /* This is the part that doesn't work with WIDE_STRINGS */
 807     if (__nt_want_vcode == 2)
 808         *cp = __nt_vcode;
 809     __nt_want_vcode = 0;
 810 #endif /* WINNT_NATIVE */
 811     return num_read;
 812 }
 813
 814 /*
 815  * SpellLine - do spelling correction on the entire command line
 816  * (which may have trailing newline).
 817  * If cmdonly is set, only check spelling of command words.
 818  * Return value:
 819  * -1: Something was incorrectible, and nothing was corrected
 820  *  0: Everything was correct
 821  *  1: Something was corrected
 822  */
 823 static int
 824 SpellLine(int cmdonly)
 825 {
 826     int     endflag, matchval;
 827     Char   *argptr, *OldCursor, *OldLastChar;
 828
 829     OldLastChar = LastChar;
 830     OldCursor = Cursor;
 831     argptr = InputBuf;
 832     endflag = 1;
 833     matchval = 0;
 834     do {
 835         while (ismetahash(*argptr) || iscmdmeta(*argptr))
 836             argptr++;
 837         for (Cursor = argptr;
 838              *Cursor != '\0' && ((Cursor != argptr && Cursor[-1] == '\\') ||
 839                                  (!ismetahash(*Cursor) && !iscmdmeta(*Cursor)));
 840              Cursor++)
 841              continue;
 842         if (*Cursor == '\0') {
 843             Cursor = LastChar;
 844             if (LastChar[-1] == '\n')
 845                 Cursor--;
 846             endflag = 0;
 847         }
 848         /* Obey current history character settings */
 849         mismatch[0] = HIST;
 850         mismatch[1] = HISTSUB;
 851         if (!Strchr(mismatch, *argptr) &&
 852             (!cmdonly || starting_a_command(argptr, InputBuf))) {
 853 #ifdef WINNT_NATIVE
 854             /*
 855              * This hack avoids correcting drive letter changes
 856              */
 857             if((Cursor - InputBuf) != 2 || (char)InputBuf[1] != ':')
 858 #endif /* WINNT_NATIVE */
 859             {
 860 #ifdef HASH_SPELL_CHECK
 861                 Char save;
 862                 size_t len = Cursor - InputBuf;
 863
 864                 save = InputBuf[len];
 865                 InputBuf[len] = '\0';
 866                 if (find_cmd(InputBuf, 0) != 0) {
 867                     InputBuf[len] = save;
 868                     argptr = Cursor;
 869                     continue;
 870                 }
 871                 InputBuf[len] = save;
 872 #endif /* HASH_SPELL_CHECK */
 873                 switch (tenematch(InputBuf, Cursor - InputBuf, SPELL)) {
 874                 case 1:         /* corrected */
 875                     matchval = 1;
 876                     break;
 877                 case -1:                /* couldn't be corrected */
 878                     if (!matchval)
 879                         matchval = -1;
 880                     break;
 881                 default:                /* was correct */
 882                     break;
 883                 }
 884             }
 885             if (LastChar != OldLastChar) {
 886                 if (argptr < OldCursor)
 887                     OldCursor += (LastChar - OldLastChar);
 888                 OldLastChar = LastChar;
 889             }
 890         }
 891         argptr = Cursor;
 892     } while (endflag);
 893     Cursor = OldCursor;
 894     return matchval;
 895 }
 896
 897 /*
 898  * CompleteLine - do command completion on the entire command line
 899  * (which may have trailing newline).
 900  * Return value:
 901  *  0: No command matched or failure
 902  *  1: One command matched
 903  *  2: Several commands matched
 904  */
 905 static int
 906 CompleteLine(void)
 907 {
 908     int     endflag, tmatch;
 909     Char   *argptr, *OldCursor, *OldLastChar;
 910
 911     OldLastChar = LastChar;
 912     OldCursor = Cursor;
 913     argptr = InputBuf;
 914     endflag = 1;
 915     do {
 916         while (ismetahash(*argptr) || iscmdmeta(*argptr))
 917             argptr++;
 918         for (Cursor = argptr;
 919              *Cursor != '\0' && ((Cursor != argptr && Cursor[-1] == '\\') ||
 920                                  (!ismetahash(*Cursor) && !iscmdmeta(*Cursor)));
 921              Cursor++)
 922              continue;
 923         if (*Cursor == '\0') {
 924             Cursor = LastChar;
 925             if (LastChar[-1] == '\n')
 926                 Cursor--;
 927             endflag = 0;
 928         }
 929         if (!Strchr(mismatch, *argptr) && starting_a_command(argptr, InputBuf)) {
 930             tmatch = tenematch(InputBuf, Cursor - InputBuf, RECOGNIZE);
 931             if (tmatch <= 0) {
 932                 return 0;
 933             } else if (tmatch > 1) {
 934                 return 2;
 935             }
 936             if (LastChar != OldLastChar) {
 937                 if (argptr < OldCursor)
 938                     OldCursor += (LastChar - OldLastChar);
 939                 OldLastChar = LastChar;
 940             }
 941         }
 942         argptr = Cursor;
 943     } while (endflag);
 944     Cursor = OldCursor;
 945     return 1;
 946 }
 947