tw.parse.c revision 69408
1/* $Header: /src/pub/tcsh/tw.parse.c,v 3.89 2000/11/11 23:03:40 christos Exp $ */ 2/* 3 * tw.parse.c: Everyone has taken a shot in this futile effort to 4 * lexically analyze a csh line... Well we cannot good 5 * a job as good as sh.lex.c; but we try. Amazing that 6 * it works considering how many hands have touched this code 7 */ 8/*- 9 * Copyright (c) 1980, 1991 The Regents of the University of California. 10 * All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 */ 40#include "sh.h" 41 42RCSID("$Id: tw.parse.c,v 3.89 2000/11/11 23:03:40 christos Exp $") 43 44#include "tw.h" 45#include "ed.h" 46#include "tc.h" 47 48#ifdef WINNT_NATIVE 49#include "nt.const.h" 50#endif /* WINNT_NATIVE */ 51#define EVEN(x) (((x) & 1) != 1) 52 53#define DOT_NONE 0 /* Don't display dot files */ 54#define DOT_NOT 1 /* Don't display dot or dot-dot */ 55#define DOT_ALL 2 /* Display all dot files */ 56 57/* TW_NONE, TW_COMMAND, TW_VARIABLE, TW_LOGNAME, */ 58/* TW_FILE, TW_DIRECTORY, TW_VARLIST, TW_USER, */ 59/* TW_COMPLETION, TW_ALIAS, TW_SHELLVAR, TW_ENVVAR, */ 60/* TW_BINDING, TW_WORDLIST, TW_LIMIT, TW_SIGNAL */ 61/* TW_JOB, TW_EXPLAIN, TW_TEXT, TW_GRPNAME */ 62static void (*tw_start_entry[]) __P((DIR *, Char *)) = { 63 tw_file_start, tw_cmd_start, tw_var_start, tw_logname_start, 64 tw_file_start, tw_file_start, tw_vl_start, tw_logname_start, 65 tw_complete_start, tw_alias_start, tw_var_start, tw_var_start, 66 tw_bind_start, tw_wl_start, tw_limit_start, tw_sig_start, 67 tw_job_start, tw_file_start, tw_file_start, tw_grpname_start 68}; 69 70static Char * (*tw_next_entry[]) __P((Char *, int *)) = { 71 tw_file_next, tw_cmd_next, tw_var_next, tw_logname_next, 72 tw_file_next, tw_file_next, tw_var_next, tw_logname_next, 73 tw_var_next, tw_var_next, tw_shvar_next, tw_envvar_next, 74 tw_bind_next, tw_wl_next, tw_limit_next, tw_sig_next, 75 tw_job_next, tw_file_next, tw_file_next, tw_grpname_next 76}; 77 78static void (*tw_end_entry[]) __P((void)) = { 79 tw_dir_end, tw_dir_end, tw_dir_end, tw_logname_end, 80 tw_dir_end, tw_dir_end, tw_dir_end, tw_logname_end, 81 tw_dir_end, tw_dir_end, tw_dir_end, tw_dir_end, 82 tw_dir_end, tw_dir_end, tw_dir_end, tw_dir_end, 83 tw_dir_end, tw_dir_end, tw_dir_end, tw_grpname_end 84}; 85 86/* #define TDEBUG */ 87 88/* Set to TRUE if recexact is set and an exact match is found 89 * along with other, longer, matches. 90 */ 91 92int curchoice = -1; 93 94int match_unique_match = FALSE; 95int non_unique_match = FALSE; 96static bool SearchNoDirErr = 0; /* t_search returns -2 if dir is unreadable */ 97 98/* state so if a completion is interrupted, the input line doesn't get 99 nuked */ 100int InsideCompletion = 0; 101 102/* do the expand or list on the command line -- SHOULD BE REPLACED */ 103 104extern Char NeedsRedraw; /* from ed.h */ 105extern int Tty_raw_mode; 106extern int TermH; /* from the editor routines */ 107extern int lbuffed; /* from sh.print.c */ 108 109static void extract_dir_and_name __P((Char *, Char *, Char *)); 110static int insert_meta __P((Char *, Char *, Char *, bool)); 111static Char *tilde __P((Char *, Char *)); 112#ifndef __MVS__ 113static int expand_dir __P((Char *, Char *, DIR **, COMMAND)); 114#endif 115static bool nostat __P((Char *)); 116static Char filetype __P((Char *, Char *)); 117static int t_glob __P((Char ***, int)); 118static int c_glob __P((Char ***)); 119static int is_prefix __P((Char *, Char *)); 120static int is_prefixmatch __P((Char *, Char *, int)); 121static int is_suffix __P((Char *, Char *)); 122static int recognize __P((Char *, Char *, int, int, int)); 123static int ignored __P((Char *)); 124static int isadirectory __P((Char *, Char *)); 125#ifndef __MVS__ 126static int tw_collect_items __P((COMMAND, int, Char *, Char *, 127 Char *, Char *, int)); 128static int tw_collect __P((COMMAND, int, Char *, Char *, 129 Char **, Char *, int, DIR *)); 130#endif 131static Char tw_suffix __P((int, Char *, Char *, Char *, 132 Char *)); 133static void tw_fixword __P((int, Char *, Char *, Char *, int)); 134static void tw_list_items __P((int, int, int)); 135static void add_scroll_tab __P((Char *)); 136static void choose_scroll_tab __P((Char **, int)); 137static void free_scroll_tab __P((void)); 138static int find_rows __P((Char *[], int, int)); 139 140#ifdef notdef 141/* 142 * If we find a set command, then we break a=b to a= and word becomes 143 * b else, we don't break a=b. [don't use that; splits words badly and 144 * messes up tw_complete()] 145 */ 146#define isaset(c, w) ((w)[-1] == '=' && \ 147 ((c)[0] == 's' && (c)[1] == 'e' && (c)[2] == 't' && \ 148 ((c[3] == ' ' || (c)[3] == '\t')))) 149#endif 150 151#define QLINESIZE (INBUFSIZE + 1) 152 153/* TRUE if character must be quoted */ 154#define tricky(w) (cmap(w, _META | _DOL | _QF | _QB | _ESC | _GLOB) && w != '#') 155/* TRUE if double quotes don't protect character */ 156#define tricky_dq(w) (cmap(w, _DOL | _QB)) 157 158/* tenematch(): 159 * Return: 160 * > 1: No. of items found 161 * = 1: Exactly one match / spelling corrected 162 * = 0: No match / spelling was correct 163 * < 0: Error (incl spelling correction impossible) 164 */ 165int 166tenematch(inputline, num_read, command) 167 Char *inputline; /* match string prefix */ 168 int num_read; /* # actually in inputline */ 169 COMMAND command; /* LIST or RECOGNIZE or PRINT_HELP */ 170 171{ 172 Char qline[QLINESIZE]; 173 Char qu = 0, *pat = STRNULL; 174 Char *str_end, *cp, *wp, *wordp; 175 Char *cmd_start, *word_start, *word; 176 Char *ocmd_start = NULL, *oword_start = NULL, *oword = NULL; 177 int suf = 0; 178 int space_left; 179 int looking; /* what we are looking for */ 180 int search_ret; /* what search returned for debugging */ 181 int backq = 0; 182 183 if (num_read > QLINESIZE - 1) 184 return -1; 185 str_end = &inputline[num_read]; 186 187 word_start = inputline; 188 word = cmd_start = wp = qline; 189 for (cp = inputline; cp < str_end; cp++) { 190 if (!cmap(qu, _ESC)) { 191 if (cmap(*cp, _QF|_ESC)) { 192 if (qu == 0 || qu == *cp) { 193 qu ^= *cp; 194 continue; 195 } 196 } 197 if (qu != '\'' && cmap(*cp, _QB)) { 198 if ((backq ^= 1) != 0) { 199 ocmd_start = cmd_start; 200 oword_start = word_start; 201 oword = word; 202 word_start = cp + 1; 203 word = cmd_start = wp + 1; 204 } 205 else { 206 cmd_start = ocmd_start; 207 word_start = oword_start; 208 word = oword; 209 } 210 *wp++ = *cp; 211 continue; 212 } 213 } 214 if (iscmdmeta(*cp)) 215 cmd_start = wp + 1; 216 217 /* Don't quote '/' to make the recognize stuff work easily */ 218 /* Don't quote '$' in double quotes */ 219 220 if (cmap(*cp, _ESC) && cp < str_end - 1 && cp[1] == HIST) 221 *wp = *++cp | QUOTE; 222 else if (qu && (tricky(*cp) || *cp == '~') && !(qu == '\"' && tricky_dq(*cp))) 223 *wp = *cp | QUOTE; 224 else 225 *wp = *cp; 226 if (ismetahash(*wp) /* || isaset(cmd_start, wp + 1) */) 227 word = wp + 1, word_start = cp + 1; 228 wp++; 229 if (cmap(qu, _ESC)) 230 qu = 0; 231 } 232 *wp = 0; 233 234#ifdef masscomp 235 /* 236 * Avoid a nasty message from the RTU 4.1A & RTU 5.0 compiler concerning 237 * the "overuse of registers". According to the compiler release notes, 238 * incorrect code may be produced unless the offending expression is 239 * rewritten. Therefore, we can't just ignore it, DAS DEC-90. 240 */ 241 space_left = QLINESIZE - 1; 242 space_left -= word - qline; 243#else 244 space_left = QLINESIZE - 1 - (int) (word - qline); 245#endif 246 247 /* 248 * SPECIAL HARDCODED COMPLETIONS: 249 * first word of command -> TW_COMMAND 250 * everything else -> TW_ZERO 251 * 252 */ 253 looking = starting_a_command(word - 1, qline) ? 254 TW_COMMAND : TW_ZERO; 255 256 wordp = word; 257 258#ifdef TDEBUG 259 xprintf(CGETS(30, 1, "starting_a_command %d\n"), looking); 260 xprintf("\ncmd_start:%S:\n", cmd_start); 261 xprintf("qline:%S:\n", qline); 262 xprintf("qline:"); 263 for (wp = qline; *wp; wp++) 264 xprintf("%c", *wp & QUOTE ? '-' : ' '); 265 xprintf(":\n"); 266 xprintf("word:%S:\n", word); 267 xprintf("word:"); 268 /* Must be last, so wp is still pointing to the end of word */ 269 for (wp = word; *wp; wp++) 270 xprintf("%c", *wp & QUOTE ? '-' : ' '); 271 xprintf(":\n"); 272#endif 273 274 if ((looking == TW_COMMAND || looking == TW_ZERO) && 275 (command == RECOGNIZE || command == LIST || command == SPELL || 276 command == RECOGNIZE_SCROLL)) { 277#ifdef TDEBUG 278 xprintf(CGETS(30, 2, "complete %d "), looking); 279#endif 280 looking = tw_complete(cmd_start, &wordp, &pat, looking, &suf); 281#ifdef TDEBUG 282 xprintf(CGETS(30, 3, "complete %d %S\n"), looking, pat); 283#endif 284 } 285 286 switch (command) { 287 Char buffer[FILSIZ + 1], *bptr; 288 Char *slshp; 289 Char *items[2], **ptr; 290 int i, count; 291 292 case RECOGNIZE: 293 case RECOGNIZE_SCROLL: 294 case RECOGNIZE_ALL: 295 if (adrof(STRautocorrect)) { 296 if ((slshp = Strrchr(wordp, '/')) != NULL && slshp[1] != '\0') { 297 SearchNoDirErr = 1; 298 for (bptr = wordp; bptr < slshp; bptr++) { 299 /* 300 * do not try to correct spelling of words containing 301 * globbing characters 302 */ 303 if (isglob(*bptr)) { 304 SearchNoDirErr = 0; 305 break; 306 } 307 } 308 } 309 } 310 else 311 slshp = STRNULL; 312 search_ret = t_search(wordp, wp, command, space_left, looking, 1, 313 pat, suf); 314 SearchNoDirErr = 0; 315 316 if (search_ret == -2) { 317 Char rword[FILSIZ + 1]; 318 319 (void) Strcpy(rword, slshp); 320 if (slshp != STRNULL) 321 *slshp = '\0'; 322 search_ret = spell_me(wordp, QLINESIZE - (wordp - qline), looking, 323 pat, suf); 324 if (search_ret == 1) { 325 (void) Strcat(wordp, rword); 326 wp = wordp + (int) Strlen(wordp); 327 search_ret = t_search(wordp, wp, command, space_left, 328 looking, 1, pat, suf); 329 } 330 } 331 if (*wp && insert_meta(word_start, str_end, word, !qu) < 0) 332 return -1; /* error inserting */ 333 return search_ret; 334 335 case SPELL: 336 for (bptr = word_start; bptr < str_end; bptr++) { 337 /* 338 * do not try to correct spelling of words containing globbing 339 * characters 340 */ 341 if (isglob(*bptr)) 342 return 0; 343 } 344 search_ret = spell_me(wordp, QLINESIZE - (wordp - qline), looking, 345 pat, suf); 346 if (search_ret == 1) { 347 if (insert_meta(word_start, str_end, word, !qu) < 0) 348 return -1; /* error inserting */ 349 } 350 return search_ret; 351 352 case PRINT_HELP: 353 do_help(cmd_start); 354 return 1; 355 356 case GLOB: 357 case GLOB_EXPAND: 358 (void) Strncpy(buffer, wordp, FILSIZ + 1); 359 items[0] = buffer; 360 items[1] = NULL; 361 ptr = items; 362 count = (looking == TW_COMMAND && Strchr(wordp, '/') == 0) ? 363 c_glob(&ptr) : 364 t_glob(&ptr, looking == TW_COMMAND); 365 if (count > 0) { 366 if (command == GLOB) 367 print_by_column(STRNULL, ptr, count, 0); 368 else { 369 DeleteBack(str_end - word_start);/* get rid of old word */ 370 for (i = 0; i < count; i++) 371 if (ptr[i] && *ptr[i]) { 372 (void) quote(ptr[i]); 373 if (insert_meta(0, 0, ptr[i], 0) < 0 || 374 InsertStr(STRspace) < 0) { 375 blkfree(ptr); 376 return -1; /* error inserting */ 377 } 378 } 379 } 380 blkfree(ptr); 381 } 382 return count; 383 384 case VARS_EXPAND: 385 if (dollar(buffer, word)) { 386 if (insert_meta(word_start, str_end, buffer, !qu) < 0) 387 return -1; /* error inserting */ 388 return 1; 389 } 390 return 0; 391 392 case PATH_NORMALIZE: 393 if ((bptr = dnormalize(wordp, symlinks == SYM_IGNORE || 394 symlinks == SYM_EXPAND)) != NULL) { 395 (void) Strcpy(buffer, bptr); 396 xfree((ptr_t) bptr); 397 if (insert_meta(word_start, str_end, buffer, !qu) < 0) 398 return -1; /* error inserting */ 399 return 1; 400 } 401 return 0; 402 403 case COMMAND_NORMALIZE: 404 if (!cmd_expand(wordp, buffer)) 405 return 0; 406 if (insert_meta(word_start, str_end, buffer, !qu) < 0) 407 return -1; /* error inserting */ 408 return 1; 409 410 case LIST: 411 case LIST_ALL: 412 search_ret = t_search(wordp, wp, LIST, space_left, looking, 1, 413 pat, suf); 414 return search_ret; 415 416 default: 417 xprintf(CGETS(30, 4, "%s: Internal match error.\n"), progname); 418 return 1; 419 420 } 421} /* end tenematch */ 422 423 424/* t_glob(): 425 * Return a list of files that match the pattern 426 */ 427static int 428t_glob(v, cmd) 429 register Char ***v; 430 int cmd; 431{ 432 jmp_buf_t osetexit; 433 434 if (**v == 0) 435 return (0); 436 gflag = 0, tglob(*v); 437 if (gflag) { 438 getexit(osetexit); /* make sure to come back here */ 439 if (setexit() == 0) 440 *v = globall(*v); 441 resexit(osetexit); 442 gargv = 0; 443 if (haderr) { 444 haderr = 0; 445 NeedsRedraw = 1; 446 return (-1); 447 } 448 if (*v == 0) 449 return (0); 450 } 451 else 452 return (0); 453 454 if (cmd) { 455 Char **av = *v, *p; 456 int fwd, i, ac = gargc; 457 458 for (i = 0, fwd = 0; i < ac; i++) 459 if (!executable(NULL, av[i], 0)) { 460 fwd++; 461 p = av[i]; 462 av[i] = NULL; 463 xfree((ptr_t) p); 464 } 465 else if (fwd) 466 av[i - fwd] = av[i]; 467 468 if (fwd) 469 av[i - fwd] = av[i]; 470 gargc -= fwd; 471 av[gargc] = NULL; 472 } 473 474 return (gargc); 475} /* end t_glob */ 476 477 478/* c_glob(): 479 * Return a list of commands that match the pattern 480 */ 481static int 482c_glob(v) 483 register Char ***v; 484{ 485 Char *pat = **v, *cmd, **av; 486 Char dir[MAXPATHLEN+1]; 487 int flag, at, ac; 488 489 if (pat == NULL) 490 return (0); 491 492 ac = 0; 493 at = 10; 494 av = (Char **) xmalloc((size_t) (at * sizeof(Char *))); 495 av[ac] = NULL; 496 497 tw_cmd_start(NULL, NULL); 498 while ((cmd = tw_cmd_next(dir, &flag)) != NULL) 499 if (Gmatch(cmd, pat)) { 500 if (ac + 1 >= at) { 501 at += 10; 502 av = (Char **) xrealloc((ptr_t) av, 503 (size_t) (at * sizeof(Char *))); 504 } 505 av[ac++] = Strsave(cmd); 506 av[ac] = NULL; 507 } 508 tw_dir_end(); 509 *v = av; 510 511 return (ac); 512} /* end c_glob */ 513 514 515/* insert_meta(): 516 * change the word before the cursor. 517 * cp must point to the start of the unquoted word. 518 * cpend to the end of it. 519 * word is the text that has to be substituted. 520 * strategy: 521 * try to keep all the quote characters of the user's input. 522 * change quote type only if necessary. 523 */ 524static int 525insert_meta(cp, cpend, word, closequotes) 526 Char *cp; 527 Char *cpend; 528 Char *word; 529 bool closequotes; 530{ 531 Char buffer[2 * FILSIZ + 1], *bptr, *wptr; 532 int in_sync = (cp != NULL); 533 int qu = 0; 534 int ndel = (int) (cp ? cpend - cp : 0); 535 Char w, wq; 536#ifdef DSPMBYTE 537 int mbytepos = 1; 538#endif /* DSPMBYTE */ 539 540 for (bptr = buffer, wptr = word;;) { 541 if (bptr > buffer + 2 * FILSIZ - 5) 542 break; 543 544 if (cp >= cpend) 545 in_sync = 0; 546#ifdef DSPMBYTE 547 if (mbytepos == 1) 548#endif /* DSPMBYTE */ 549 if (in_sync && !cmap(qu, _ESC) && cmap(*cp, _QF|_ESC)) 550 if (qu == 0 || qu == *cp) { 551 qu ^= *cp; 552 *bptr++ = *cp++; 553 continue; 554 } 555 w = *wptr; 556 if (w == 0) 557 break; 558 559 wq = w & QUOTE; 560 w &= ~QUOTE; 561 562#ifdef DSPMBYTE 563 if (mbytepos == 2) 564 goto mbyteskip; 565#endif /* DSPMBYTE */ 566 if (cmap(w, _ESC | _QF)) 567 wq = QUOTE; /* quotes are always quoted */ 568 569 if (!wq && qu && tricky(w) && !(qu == '\"' && tricky_dq(w))) { 570 /* We have to unquote the character */ 571 in_sync = 0; 572 if (cmap(qu, _ESC)) 573 bptr[-1] = w; 574 else { 575 *bptr++ = (Char) qu; 576 *bptr++ = w; 577 if (wptr[1] == 0) 578 qu = 0; 579 else 580 *bptr++ = (Char) qu; 581 } 582 } else if (qu && w == qu) { 583 in_sync = 0; 584 if (bptr > buffer && bptr[-1] == qu) { 585 /* User misunderstanding :) */ 586 bptr[-1] = '\\'; 587 *bptr++ = w; 588 qu = 0; 589 } else { 590 *bptr++ = (Char) qu; 591 *bptr++ = '\\'; 592 *bptr++ = w; 593 *bptr++ = (Char) qu; 594 } 595 } 596 else if (wq && qu == '\"' && tricky_dq(w)) { 597 in_sync = 0; 598 *bptr++ = (Char) qu; 599 *bptr++ = '\\'; 600 *bptr++ = w; 601 *bptr++ = (Char) qu; 602 } else if (wq && ((!qu && (tricky(w) || (w == HISTSUB && bptr == buffer))) || (!cmap(qu, _ESC) && w == HIST))) { 603 in_sync = 0; 604 *bptr++ = '\\'; 605 *bptr++ = w; 606 } else { 607#ifdef DSPMBYTE 608 mbyteskip: 609#endif /* DSPMBYTE */ 610 if (in_sync && *cp++ != w) 611 in_sync = 0; 612 *bptr++ = w; 613#ifdef DSPMBYTE 614 if (mbytepos == 1 && Ismbyte1(w)) 615 mbytepos = 2; 616 else 617 mbytepos = 1; 618#endif /* DSPMBYTE */ 619 } 620 wptr++; 621 if (cmap(qu, _ESC)) 622 qu = 0; 623 } 624 if (closequotes && qu && !cmap(qu, _ESC)) 625 *bptr++ = (Char) qu; 626 *bptr = '\0'; 627 if (ndel) 628 DeleteBack(ndel); 629 return InsertStr(buffer); 630} /* end insert_meta */ 631 632 633 634/* is_prefix(): 635 * return true if check matches initial chars in template 636 * This differs from PWB imatch in that if check is null 637 * it matches anything 638 */ 639static int 640is_prefix(check, template) 641 register Char *check, *template; 642{ 643 for (; *check; check++, template++) 644 if ((*check & TRIM) != (*template & TRIM)) 645 return (FALSE); 646 return (TRUE); 647} /* end is_prefix */ 648 649 650/* is_prefixmatch(): 651 * return true if check matches initial chars in template 652 * This differs from PWB imatch in that if check is null 653 * it matches anything 654 * and matches on shortening of commands 655 */ 656static int 657is_prefixmatch(check, template, igncase) 658 Char *check, *template; 659 int igncase; 660{ 661 Char MCH1, MCH2; 662 663 for (; *check; check++, template++) { 664 if ((*check & TRIM) != (*template & TRIM)) { 665 MCH1 = (*check & TRIM); 666 MCH2 = (*template & TRIM); 667 MCH1 = Isupper(MCH1) ? Tolower(MCH1) : MCH1; 668 MCH2 = Isupper(MCH2) ? Tolower(MCH2) : MCH2; 669 if (MCH1 != MCH2) { 670 if (!igncase && ((*check & TRIM) == '-' || 671 (*check & TRIM) == '.' || 672 (*check & TRIM) == '_')) { 673 MCH1 = MCH2 = (*check & TRIM); 674 if (MCH1 == '_') { 675 MCH2 = '-'; 676 } else if (MCH1 == '-') { 677 MCH2 = '_'; 678 } 679 for (;*template && (*template & TRIM) != MCH1 && 680 (*template & TRIM) != MCH2; template++) 681 continue; 682 if (!*template) { 683 return (FALSE); 684 } 685 } else { 686 return (FALSE); 687 } 688 } 689 } 690 } 691 return (TRUE); 692} /* end is_prefixmatch */ 693 694 695/* is_suffix(): 696 * Return true if the chars in template appear at the 697 * end of check, I.e., are it's suffix. 698 */ 699static int 700is_suffix(check, template) 701 register Char *check, *template; 702{ 703 register Char *t, *c; 704 705 for (t = template; *t++;) 706 continue; 707 for (c = check; *c++;) 708 continue; 709 for (;;) { 710 if (t == template) 711 return 1; 712 if (c == check || (*--t & TRIM) != (*--c & TRIM)) 713 return 0; 714 } 715} /* end is_suffix */ 716 717 718/* ignored(): 719 * Return true if this is an ignored item 720 */ 721static int 722ignored(item) 723 register Char *item; 724{ 725 struct varent *vp; 726 register Char **cp; 727 728 if ((vp = adrof(STRfignore)) == NULL || (cp = vp->vec) == NULL) 729 return (FALSE); 730 for (; *cp != NULL; cp++) 731 if (is_suffix(item, *cp)) 732 return (TRUE); 733 return (FALSE); 734} /* end ignored */ 735 736 737 738/* starting_a_command(): 739 * return true if the command starting at wordstart is a command 740 */ 741int 742starting_a_command(wordstart, inputline) 743 register Char *wordstart, *inputline; 744{ 745 register Char *ptr, *ncmdstart; 746 int count; 747 static Char 748 cmdstart[] = {'`', ';', '&', '(', '|', '\0'}, 749 cmdalive[] = {' ', '\t', '\'', '"', '<', '>', '\0'}; 750 751 /* 752 * Find if the number of backquotes is odd or even. 753 */ 754 for (ptr = wordstart, count = 0; 755 ptr >= inputline; 756 count += (*ptr-- == '`')) 757 continue; 758 /* 759 * if the number of backquotes is even don't include the backquote char in 760 * the list of command starting delimiters [if it is zero, then it does not 761 * matter] 762 */ 763 ncmdstart = cmdstart + EVEN(count); 764 765 /* 766 * look for the characters previous to this word if we find a command 767 * starting delimiter we break. if we find whitespace and another previous 768 * word then we are not a command 769 * 770 * count is our state machine: 0 looking for anything 1 found white-space 771 * looking for non-ws 772 */ 773 for (count = 0; wordstart >= inputline; wordstart--) { 774 if (*wordstart == '\0') 775 continue; 776 if (Strchr(ncmdstart, *wordstart)) 777 break; 778 /* 779 * found white space 780 */ 781 if ((ptr = Strchr(cmdalive, *wordstart)) != NULL) 782 count = 1; 783 if (count == 1 && !ptr) 784 return (FALSE); 785 } 786 787 if (wordstart > inputline) 788 switch (*wordstart) { 789 case '&': /* Look for >& */ 790 while (wordstart > inputline && 791 (*--wordstart == ' ' || *wordstart == '\t')) 792 continue; 793 if (*wordstart == '>') 794 return (FALSE); 795 break; 796 case '(': /* check for foreach, if etc. */ 797 while (wordstart > inputline && 798 (*--wordstart == ' ' || *wordstart == '\t')) 799 continue; 800 if (!iscmdmeta(*wordstart) && 801 (*wordstart != ' ' && *wordstart != '\t')) 802 return (FALSE); 803 break; 804 default: 805 break; 806 } 807 return (TRUE); 808} /* end starting_a_command */ 809 810 811/* recognize(): 812 * Object: extend what user typed up to an ambiguity. 813 * Algorithm: 814 * On first match, copy full item (assume it'll be the only match) 815 * On subsequent matches, shorten exp_name to the first 816 * character mismatch between exp_name and item. 817 * If we shorten it back to the prefix length, stop searching. 818 */ 819static int 820recognize(exp_name, item, name_length, numitems, enhanced) 821 Char *exp_name, *item; 822 int name_length, numitems, enhanced; 823{ 824 Char MCH1, MCH2; 825 register Char *x, *ent; 826 register int len = 0; 827#ifdef WINNT_NATIVE 828 struct varent *vp; 829 int igncase; 830 igncase = (vp = adrof(STRcomplete)) != NULL && 831 Strcmp(*(vp->vec), STRigncase) == 0; 832#endif /* WINNT_NATIVE */ 833 834 if (numitems == 1) { /* 1st match */ 835 copyn(exp_name, item, MAXNAMLEN); 836 return (0); 837 } 838 if (!enhanced 839#ifdef WINNT_NATIVE 840 && !igncase 841#endif /* WINNT_NATIVE */ 842 ) { 843 for (x = exp_name, ent = item; *x && (*x & TRIM) == (*ent & TRIM); x++, ent++) 844 len++; 845 } else { 846 for (x = exp_name, ent = item; *x; x++, ent++) { 847 MCH1 = *x & TRIM; 848 MCH2 = *ent & TRIM; 849 MCH1 = Isupper(MCH1) ? Tolower(MCH1) : MCH1; 850 MCH2 = Isupper(MCH2) ? Tolower(MCH2) : MCH2; 851 if (MCH1 != MCH2) 852 break; 853 len++; 854 } 855 if (*x || !*ent) /* Shorter or exact match */ 856 copyn(exp_name, item, MAXNAMLEN); 857 } 858 *x = '\0'; /* Shorten at 1st char diff */ 859 if (!(match_unique_match || is_set(STRrecexact) || (enhanced && *ent)) && len == name_length) /* Ambiguous to prefix? */ 860 return (-1); /* So stop now and save time */ 861 return (0); 862} /* end recognize */ 863 864 865/* tw_collect_items(): 866 * Collect items that match target. 867 * SPELL command: 868 * Returns the spelling distance of the closest match. 869 * else 870 * Returns the number of items found. 871 * If none found, but some ignored items were found, 872 * It returns the -number of ignored items. 873 */ 874static int 875tw_collect_items(command, looking, exp_dir, exp_name, target, pat, flags) 876 COMMAND command; 877 int looking; 878 Char *exp_dir, *exp_name, *target, *pat; 879 int flags; 880 881{ 882 int done = FALSE; /* Search is done */ 883 int showdots; /* Style to show dot files */ 884 int nignored = 0; /* Number of fignored items */ 885 int numitems = 0; /* Number of matched items */ 886 int name_length = (int) Strlen(target); /* Length of prefix (file name) */ 887 int exec_check = flags & TW_EXEC_CHK;/* need to check executability */ 888 int dir_check = flags & TW_DIR_CHK; /* Need to check for directories */ 889 int text_check = flags & TW_TEXT_CHK;/* Need to check for non-directories */ 890 int dir_ok = flags & TW_DIR_OK; /* Ignore directories? */ 891 int gpat = flags & TW_PAT_OK; /* Match against a pattern */ 892 int ignoring = flags & TW_IGN_OK; /* Use fignore? */ 893 int d = 4, nd; /* Spelling distance */ 894 Char *item, *ptr; 895 Char buf[MAXPATHLEN+1]; 896 struct varent *vp; 897 int len, enhanced; 898 int cnt = 0; 899 int igncase = 0; 900 901 902 flags = 0; 903 904 showdots = DOT_NONE; 905 if ((ptr = varval(STRlistflags)) != STRNULL) 906 while (*ptr) 907 switch (*ptr++) { 908 case 'a': 909 showdots = DOT_ALL; 910 break; 911 case 'A': 912 showdots = DOT_NOT; 913 break; 914 default: 915 break; 916 } 917 918 while (!done && (item = (*tw_next_entry[looking])(exp_dir, &flags))) { 919#ifdef TDEBUG 920 xprintf("item = %S\n", item); 921#endif 922 switch (looking) { 923 case TW_FILE: 924 case TW_DIRECTORY: 925 case TW_TEXT: 926 /* 927 * Don't match . files on null prefix match 928 */ 929 if (showdots == DOT_NOT && (ISDOT(item) || ISDOTDOT(item))) 930 done = TRUE; 931 if (name_length == 0 && item[0] == '.' && showdots == DOT_NONE) 932 done = TRUE; 933 break; 934 935 case TW_COMMAND: 936 exec_check = flags & TW_EXEC_CHK; 937 dir_ok = flags & TW_DIR_OK; 938 break; 939 940 default: 941 break; 942 } 943 944 if (done) { 945 done = FALSE; 946 continue; 947 } 948 949 switch (command) { 950 951 case SPELL: /* correct the spelling of the last bit */ 952 if (name_length == 0) {/* zero-length word can't be misspelled */ 953 exp_name[0] = '\0';/* (not trying is important for ~) */ 954 d = 0; 955 done = TRUE; 956 break; 957 } 958 if (gpat && !Gmatch(item, pat)) 959 break; 960 /* 961 * Swapped the order of the spdist() arguments as suggested 962 * by eeide@asylum.cs.utah.edu (Eric Eide) 963 */ 964 nd = spdist(target, item); /* test the item against original */ 965 if (nd <= d && nd != 4) { 966 if (!(exec_check && !executable(exp_dir, item, dir_ok))) { 967 (void) Strcpy(exp_name, item); 968 d = nd; 969 if (d == 0) /* if found it exactly */ 970 done = TRUE; 971 } 972 } 973 else if (nd == 4) { 974 if (spdir(exp_name, exp_dir, item, target)) { 975 if (exec_check && !executable(exp_dir, exp_name, dir_ok)) 976 break; 977#ifdef notdef 978 /* 979 * We don't want to stop immediately, because 980 * we might find an exact/better match later. 981 */ 982 d = 0; 983 done = TRUE; 984#endif 985 d = 3; 986 } 987 } 988 break; 989 990 case LIST: 991 case RECOGNIZE: 992 case RECOGNIZE_ALL: 993 case RECOGNIZE_SCROLL: 994 995#ifdef WINNT_NATIVE 996 igncase = (vp = adrof(STRcomplete)) != NULL && 997 Strcmp(*(vp->vec), STRigncase) == 0; 998#endif /* WINNT_NATIVE */ 999 enhanced = (vp = adrof(STRcomplete)) != NULL && !Strcmp(*(vp->vec),STRenhance); 1000 if (enhanced || igncase) { 1001 if (!is_prefixmatch(target, item, igncase)) 1002 break; 1003 } else { 1004 if (!is_prefix(target, item)) 1005 break; 1006 } 1007 1008 if (exec_check && !executable(exp_dir, item, dir_ok)) 1009 break; 1010 1011 if (dir_check && !isadirectory(exp_dir, item)) 1012 break; 1013 1014 if (text_check && isadirectory(exp_dir, item)) 1015 break; 1016 1017 /* 1018 * Only pattern match directories if we're checking 1019 * for directories. 1020 */ 1021 if (gpat && !Gmatch(item, pat) && 1022 (dir_check || !isadirectory(exp_dir, item))) 1023 break; 1024 1025 /* 1026 * Remove duplicates in command listing and completion 1027 * AFEB added code for TW_LOGNAME and TW_USER cases 1028 */ 1029 if (looking == TW_COMMAND || looking == TW_LOGNAME 1030 || looking == TW_USER || command == LIST) { 1031 copyn(buf, item, MAXPATHLEN); 1032 len = (int) Strlen(buf); 1033 switch (looking) { 1034 case TW_COMMAND: 1035 if (!(dir_ok && exec_check)) 1036 break; 1037 if (filetype(exp_dir, item) == '/') { 1038 buf[len++] = '/'; 1039 buf[len] = '\0'; 1040 } 1041 break; 1042 1043 case TW_FILE: 1044 case TW_DIRECTORY: 1045 buf[len++] = filetype(exp_dir, item); 1046 buf[len] = '\0'; 1047 break; 1048 1049 default: 1050 break; 1051 } 1052 if ((looking == TW_COMMAND || looking == TW_USER 1053 || looking == TW_LOGNAME) && tw_item_find(buf)) 1054 break; 1055 else { 1056 /* maximum length 1 (NULL) + 1 (~ or $) + 1 (filetype) */ 1057 ptr = tw_item_add(len + 3); 1058 copyn(ptr, buf, MAXPATHLEN); 1059 if (command == LIST) 1060 numitems++; 1061 } 1062 } 1063 1064 if (command == RECOGNIZE || command == RECOGNIZE_ALL || 1065 command == RECOGNIZE_SCROLL) { 1066 if (ignoring && ignored(item)) { 1067 nignored++; 1068 break; 1069 } 1070 else if (command == RECOGNIZE_SCROLL) { 1071 add_scroll_tab(item); 1072 cnt++; 1073 } 1074 1075 if (match_unique_match || is_set(STRrecexact)) { 1076 if (StrQcmp(target, item) == 0) { /* EXACT match */ 1077 copyn(exp_name, item, MAXNAMLEN); 1078 numitems = 1; /* fake into expanding */ 1079 non_unique_match = TRUE; 1080 done = TRUE; 1081 break; 1082 } 1083 } 1084 if (recognize(exp_name, item, name_length, ++numitems, enhanced)) 1085 if (command != RECOGNIZE_SCROLL) 1086 done = TRUE; 1087 if (enhanced && (int)Strlen(exp_name) < name_length) 1088 copyn(exp_name, target, MAXNAMLEN); 1089 } 1090 break; 1091 1092 default: 1093 break; 1094 } 1095#ifdef TDEBUG 1096 xprintf("done item = %S\n", item); 1097#endif 1098 } 1099 1100 1101 if (command == RECOGNIZE_SCROLL) { 1102 if ((cnt <= curchoice) || (curchoice == -1)) { 1103 curchoice = -1; 1104 nignored = 0; 1105 numitems = 0; 1106 } else if (numitems > 1) { 1107 if (curchoice < -1) 1108 curchoice = cnt - 1; 1109 choose_scroll_tab(&exp_name, cnt); 1110 numitems = 1; 1111 } 1112 } 1113 free_scroll_tab(); 1114 1115 if (command == SPELL) 1116 return d; 1117 else { 1118 if (ignoring && numitems == 0 && nignored > 0) 1119 return -nignored; 1120 else 1121 return numitems; 1122 } 1123} 1124 1125 1126/* tw_suffix(): 1127 * Find and return the appropriate suffix character 1128 */ 1129/*ARGSUSED*/ 1130static Char 1131tw_suffix(looking, exp_dir, exp_name, target, name) 1132 int looking; 1133 Char *exp_dir, *exp_name, *target, *name; 1134{ 1135 Char *ptr; 1136 struct varent *vp; 1137 1138 USE(name); 1139 (void) strip(exp_name); 1140 1141 switch (looking) { 1142 1143 case TW_LOGNAME: 1144 return '/'; 1145 1146 case TW_VARIABLE: 1147 /* 1148 * Don't consider array variables or empty variables 1149 */ 1150 if ((vp = adrof(exp_name)) != NULL) { 1151 if ((ptr = vp->vec[0]) == NULL || *ptr == '\0' || 1152 vp->vec[1] != NULL) 1153 return ' '; 1154 } 1155 else if ((ptr = tgetenv(exp_name)) == NULL || *ptr == '\0') 1156 return ' '; 1157 1158 *--target = '\0'; 1159 1160 return isadirectory(exp_dir, ptr) ? '/' : ' '; 1161 1162 1163 case TW_DIRECTORY: 1164 return '/'; 1165 1166 case TW_COMMAND: 1167 case TW_FILE: 1168 return isadirectory(exp_dir, exp_name) ? '/' : ' '; 1169 1170 case TW_ALIAS: 1171 case TW_VARLIST: 1172 case TW_WORDLIST: 1173 case TW_SHELLVAR: 1174 case TW_ENVVAR: 1175 case TW_USER: 1176 case TW_BINDING: 1177 case TW_LIMIT: 1178 case TW_SIGNAL: 1179 case TW_JOB: 1180 case TW_COMPLETION: 1181 case TW_TEXT: 1182 case TW_GRPNAME: 1183 return ' '; 1184 1185 default: 1186 return '\0'; 1187 } 1188} /* end tw_suffix */ 1189 1190 1191/* tw_fixword(): 1192 * Repair a word after a spalling or a recognizwe 1193 */ 1194static void 1195tw_fixword(looking, word, dir, exp_name, max_word_length) 1196 int looking; 1197 Char *word, *dir, *exp_name; 1198 int max_word_length; 1199{ 1200 Char *ptr; 1201 1202 switch (looking) { 1203 case TW_LOGNAME: 1204 copyn(word, STRtilde, 1); 1205 break; 1206 1207 case TW_VARIABLE: 1208 if ((ptr = Strrchr(word, '$')) != NULL) 1209 *++ptr = '\0'; /* Delete after the dollar */ 1210 else 1211 word[0] = '\0'; 1212 break; 1213 1214 case TW_DIRECTORY: 1215 case TW_FILE: 1216 case TW_TEXT: 1217 copyn(word, dir, max_word_length); /* put back dir part */ 1218 break; 1219 1220 default: 1221 word[0] = '\0'; 1222 break; 1223 } 1224 1225 (void) quote(exp_name); 1226 catn(word, exp_name, max_word_length); /* add extended name */ 1227} /* end tw_fixword */ 1228 1229 1230/* tw_collect(): 1231 * Collect items. Return -1 in case we were interrupted or 1232 * the return value of tw_collect 1233 * This is really a wrapper for tw_collect_items, serving two 1234 * purposes: 1235 * 1. Handles interrupt cleanups. 1236 * 2. Retries if we had no matches, but there were ignored matches 1237 */ 1238static int 1239tw_collect(command, looking, exp_dir, exp_name, target, pat, flags, dir_fd) 1240 COMMAND command; 1241 int looking; 1242 Char *exp_dir, *exp_name, **target, *pat; 1243 int flags; 1244 DIR *dir_fd; 1245{ 1246 static int ni; /* static so we don't get clobbered */ 1247 jmp_buf_t osetexit; 1248 1249#ifdef TDEBUG 1250 xprintf("target = %S\n", *target); 1251#endif 1252 ni = 0; 1253 getexit(osetexit); 1254 for (;;) { 1255 (*tw_start_entry[looking])(dir_fd, pat); 1256 InsideCompletion = 1; 1257 if (setexit()) { 1258 /* interrupted, clean up */ 1259 resexit(osetexit); 1260 InsideCompletion = 0; 1261 haderr = 0; 1262 1263#if defined(SOLARIS2) && defined(i386) && !defined(__GNUC__) 1264 /* Compiler bug? (from PWP) */ 1265 if ((looking == TW_LOGNAME) || (looking == TW_USER)) 1266 tw_logname_end(); 1267 else 1268 if (looking == TW_GRPNAME) 1269 tw_grpname_end(); 1270 else 1271 tw_dir_end(); 1272#else /* !(SOLARIS2 && i386 && !__GNUC__) */ 1273 (*tw_end_entry[looking])(); 1274#endif /* !(SOLARIS2 && i386 && !__GNUC__) */ 1275 1276 /* flag error */ 1277 return(-1); 1278 } 1279 if ((ni = tw_collect_items(command, looking, exp_dir, exp_name, 1280 *target, pat, 1281 ni >= 0 ? flags : 1282 flags & ~TW_IGN_OK)) >= 0) { 1283 resexit(osetexit); 1284 InsideCompletion = 0; 1285 1286#if defined(SOLARIS2) && defined(i386) && !defined(__GNUC__) 1287 /* Compiler bug? (from PWP) */ 1288 if ((looking == TW_LOGNAME) || (looking == TW_USER)) 1289 tw_logname_end(); 1290 else 1291 if (looking == TW_GRPNAME) 1292 tw_grpname_end(); 1293 else 1294 tw_dir_end(); 1295#else /* !(SOLARIS2 && i386 && !__GNUC__) */ 1296 (*tw_end_entry[looking])(); 1297#endif /* !(SOLARIS2 && i386 && !__GNUC__) */ 1298 1299 return(ni); 1300 } 1301 } 1302} /* end tw_collect */ 1303 1304 1305/* tw_list_items(): 1306 * List the items that were found 1307 * 1308 * NOTE instead of looking at numerical vars listmax and listmaxrows 1309 * we can look at numerical var listmax, and have a string value 1310 * listmaxtype (or similar) than can have values 'items' and 'rows' 1311 * (by default interpreted as 'items', for backwards compatibility) 1312 */ 1313static void 1314tw_list_items(looking, numitems, list_max) 1315 int looking, numitems, list_max; 1316{ 1317 Char *ptr; 1318 int max_items = 0; 1319 int max_rows = 0; 1320 1321 if ((ptr = varval(STRlistmax)) != STRNULL) { 1322 while (*ptr) { 1323 if (!Isdigit(*ptr)) { 1324 max_items = 0; 1325 break; 1326 } 1327 max_items = max_items * 10 + *ptr++ - '0'; 1328 } 1329 if ((max_items > 0) && (numitems > max_items) && list_max) 1330 max_items = numitems; 1331 else 1332 max_items = 0; 1333 } 1334 1335 if (max_items == 0 && (ptr = varval(STRlistmaxrows)) != STRNULL) { 1336 int rows; 1337 1338 while (*ptr) { 1339 if (!Isdigit(*ptr)) { 1340 max_rows = 0; 1341 break; 1342 } 1343 max_rows = max_rows * 10 + *ptr++ - '0'; 1344 } 1345 if (max_rows != 0 && looking != TW_JOB) 1346 rows = find_rows(tw_item_get(), numitems, TRUE); 1347 else 1348 rows = numitems; /* underestimate for lines wider than the termH */ 1349 if ((max_rows > 0) && (rows > max_rows) && list_max) 1350 max_rows = rows; 1351 else 1352 max_rows = 0; 1353 } 1354 1355 1356 if (max_items || max_rows) { 1357 char tc; 1358 const char *name; 1359 int maxs; 1360 1361 if (max_items) { 1362 name = CGETS(30, 5, "items"); 1363 maxs = max_items; 1364 } 1365 else { 1366 name = CGETS(30, 6, "rows"); 1367 maxs = max_rows; 1368 } 1369 1370 xprintf(CGETS(30, 7, "There are %d %s, list them anyway? [n/y] "), 1371 maxs, name); 1372 flush(); 1373 /* We should be in Rawmode here, so no \n to catch */ 1374 (void) read(SHIN, &tc, 1); 1375 xprintf("%c\r\n", tc); /* echo the char, do a newline */ 1376 /* 1377 * Perhaps we should use the yesexpr from the 1378 * actual locale 1379 */ 1380 if (strchr(CGETS(30, 13, "Yy"), tc) == NULL) 1381 return; 1382 } 1383 1384 if (looking != TW_SIGNAL) 1385 qsort((ptr_t) tw_item_get(), (size_t) numitems, sizeof(Char *), 1386 (int (*) __P((const void *, const void *))) fcompare); 1387 if (looking != TW_JOB) 1388 print_by_column(STRNULL, tw_item_get(), numitems, TRUE); 1389 else { 1390 /* 1391 * print one item on every line because jobs can have spaces 1392 * and it is confusing. 1393 */ 1394 int i; 1395 Char **w = tw_item_get(); 1396 1397 for (i = 0; i < numitems; i++) { 1398 xprintf("%S", w[i]); 1399 if (Tty_raw_mode) 1400 xputchar('\r'); 1401 xputchar('\n'); 1402 } 1403 } 1404} /* end tw_list_items */ 1405 1406 1407/* t_search(): 1408 * Perform a RECOGNIZE, LIST or SPELL command on string "word". 1409 * 1410 * Return value: 1411 * >= 0: SPELL command: "distance" (see spdist()) 1412 * other: No. of items found 1413 * < 0: Error (message or beep is output) 1414 */ 1415/*ARGSUSED*/ 1416int 1417t_search(word, wp, command, max_word_length, looking, list_max, pat, suf) 1418 Char *word, *wp; /* original end-of-word */ 1419 COMMAND command; 1420 int max_word_length, looking, list_max; 1421 Char *pat; 1422 int suf; 1423{ 1424 int numitems, /* Number of items matched */ 1425 flags = 0, /* search flags */ 1426 gpat = pat[0] != '\0', /* Glob pattern search */ 1427 nd; /* Normalized directory return */ 1428 Char exp_dir[FILSIZ + 1], /* dir after ~ expansion */ 1429 dir[FILSIZ + 1], /* /x/y/z/ part in /x/y/z/f */ 1430 exp_name[MAXNAMLEN + 1], /* the recognized (extended) */ 1431 name[MAXNAMLEN + 1], /* f part in /d/d/d/f name */ 1432 *target; /* Target to expand/correct/list */ 1433 DIR *dir_fd = NULL; 1434 1435 USE(wp); 1436 1437 /* 1438 * bugfix by Marty Grossman (grossman@CC5.BBN.COM): directory listing can 1439 * dump core when interrupted 1440 */ 1441 tw_item_free(); 1442 1443 non_unique_match = FALSE; /* See the recexact code below */ 1444 1445 extract_dir_and_name(word, dir, name); 1446 1447 /* 1448 * SPECIAL HARDCODED COMPLETIONS: 1449 * foo$variable -> TW_VARIABLE 1450 * ~user -> TW_LOGNAME 1451 * 1452 */ 1453 if ((*word == '~') && (Strchr(word, '/') == NULL)) { 1454 looking = TW_LOGNAME; 1455 target = name; 1456 gpat = 0; /* Override pattern mechanism */ 1457 } 1458 else if ((target = Strrchr(name, '$')) != 0 && 1459 (Strchr(name, '/') == NULL)) { 1460 target++; 1461 looking = TW_VARIABLE; 1462 gpat = 0; /* Override pattern mechanism */ 1463 } 1464 else 1465 target = name; 1466 1467 /* 1468 * Try to figure out what we should be looking for 1469 */ 1470 if (looking & TW_PATH) { 1471 gpat = 0; /* pattern holds the pathname to be used */ 1472 copyn(exp_dir, pat, MAXNAMLEN); 1473 if (exp_dir[Strlen(exp_dir) - 1] != '/') 1474 catn(exp_dir, STRslash, MAXNAMLEN); 1475 catn(exp_dir, dir, MAXNAMLEN); 1476 } 1477 else 1478 exp_dir[0] = '\0'; 1479 1480 switch (looking & ~TW_PATH) { 1481 case TW_NONE: 1482 return -1; 1483 1484 case TW_ZERO: 1485 looking = TW_FILE; 1486 break; 1487 1488 case TW_COMMAND: 1489 if (Strchr(word, '/') || (looking & TW_PATH)) { 1490 looking = TW_FILE; 1491 flags |= TW_EXEC_CHK; 1492 flags |= TW_DIR_OK; 1493 } 1494#ifdef notdef 1495 /* PWP: don't even bother when doing ALL of the commands */ 1496 if (looking == TW_COMMAND && (*word == '\0')) 1497 return (-1); 1498#endif 1499 break; 1500 1501 1502 case TW_VARLIST: 1503 case TW_WORDLIST: 1504 gpat = 0; /* pattern holds the name of the variable */ 1505 break; 1506 1507 case TW_EXPLAIN: 1508 if (command == LIST && pat != NULL) { 1509 xprintf("%S", pat); 1510 if (Tty_raw_mode) 1511 xputchar('\r'); 1512 xputchar('\n'); 1513 } 1514 return 2; 1515 1516 default: 1517 break; 1518 } 1519 1520 /* 1521 * let fignore work only when we are not using a pattern 1522 */ 1523 flags |= (gpat == 0) ? TW_IGN_OK : TW_PAT_OK; 1524 1525#ifdef TDEBUG 1526 xprintf(CGETS(30, 8, "looking = %d\n"), looking); 1527#endif 1528 1529 switch (looking) { 1530 case TW_ALIAS: 1531 case TW_SHELLVAR: 1532 case TW_ENVVAR: 1533 case TW_BINDING: 1534 case TW_LIMIT: 1535 case TW_SIGNAL: 1536 case TW_JOB: 1537 case TW_COMPLETION: 1538 case TW_GRPNAME: 1539 break; 1540 1541 1542 case TW_VARIABLE: 1543 if ((nd = expand_dir(dir, exp_dir, &dir_fd, command)) != 0) 1544 return nd; 1545 break; 1546 1547 case TW_DIRECTORY: 1548 flags |= TW_DIR_CHK; 1549 1550#ifdef notyet 1551 /* 1552 * This is supposed to expand the directory stack. 1553 * Problems: 1554 * 1. Slow 1555 * 2. directories with the same name 1556 */ 1557 flags |= TW_DIR_OK; 1558#endif 1559#ifdef notyet 1560 /* 1561 * Supposed to do delayed expansion, but it is inconsistent 1562 * from a user-interface point of view, since it does not 1563 * immediately obey addsuffix 1564 */ 1565 if ((nd = expand_dir(dir, exp_dir, &dir_fd, command)) != 0) 1566 return nd; 1567 if (isadirectory(exp_dir, name)) { 1568 if (exp_dir[0] != '\0' || name[0] != '\0') { 1569 catn(dir, name, MAXNAMLEN); 1570 if (dir[Strlen(dir) - 1] != '/') 1571 catn(dir, STRslash, MAXNAMLEN); 1572 if ((nd = expand_dir(dir, exp_dir, &dir_fd, command)) != 0) 1573 return nd; 1574 if (word[Strlen(word) - 1] != '/') 1575 catn(word, STRslash, MAXNAMLEN); 1576 name[0] = '\0'; 1577 } 1578 } 1579#endif 1580 if ((nd = expand_dir(dir, exp_dir, &dir_fd, command)) != 0) 1581 return nd; 1582 break; 1583 1584 case TW_TEXT: 1585 flags |= TW_TEXT_CHK; 1586 /*FALLTHROUGH*/ 1587 case TW_FILE: 1588 if ((nd = expand_dir(dir, exp_dir, &dir_fd, command)) != 0) 1589 return nd; 1590 break; 1591 1592 case TW_PATH | TW_TEXT: 1593 case TW_PATH | TW_FILE: 1594 case TW_PATH | TW_DIRECTORY: 1595 case TW_PATH | TW_COMMAND: 1596 if ((dir_fd = opendir(short2str(exp_dir))) == NULL) { 1597 xprintf("%S: %s\n", exp_dir, strerror(errno)); 1598 return -1; 1599 } 1600 if (exp_dir[Strlen(exp_dir) - 1] != '/') 1601 catn(exp_dir, STRslash, MAXNAMLEN); 1602 1603 looking &= ~TW_PATH; 1604 1605 switch (looking) { 1606 case TW_TEXT: 1607 flags |= TW_TEXT_CHK; 1608 break; 1609 1610 case TW_FILE: 1611 break; 1612 1613 case TW_DIRECTORY: 1614 flags |= TW_DIR_CHK; 1615 break; 1616 1617 case TW_COMMAND: 1618 copyn(target, word, MAXNAMLEN); /* so it can match things */ 1619 break; 1620 1621 default: 1622 abort(); /* Cannot happen */ 1623 break; 1624 } 1625 break; 1626 1627 case TW_LOGNAME: 1628 word++; 1629 /*FALLTHROUGH*/ 1630 case TW_USER: 1631 /* 1632 * Check if the spelling was already correct 1633 * From: Rob McMahon <cudcv@cu.warwick.ac.uk> 1634 */ 1635 if (command == SPELL && getpwnam(short2str(word)) != NULL) { 1636#ifdef YPBUGS 1637 fix_yp_bugs(); 1638#endif /* YPBUGS */ 1639 return (0); 1640 } 1641 copyn(name, word, MAXNAMLEN); /* name sans ~ */ 1642 if (looking == TW_LOGNAME) 1643 word--; 1644 break; 1645 1646 case TW_COMMAND: 1647 case TW_VARLIST: 1648 case TW_WORDLIST: 1649 copyn(target, word, MAXNAMLEN); /* so it can match things */ 1650 break; 1651 1652 default: 1653 xprintf(CGETS(30, 9, 1654 "\n%s internal error: I don't know what I'm looking for!\n"), 1655 progname); 1656 NeedsRedraw = 1; 1657 return (-1); 1658 } 1659 1660 numitems = tw_collect(command, looking, exp_dir, exp_name, 1661 &target, pat, flags, dir_fd); 1662 if (numitems == -1) 1663 return -1; 1664 1665 switch (command) { 1666 case RECOGNIZE: 1667 case RECOGNIZE_ALL: 1668 case RECOGNIZE_SCROLL: 1669 if (numitems <= 0) 1670 return (numitems); 1671 1672 tw_fixword(looking, word, dir, exp_name, max_word_length); 1673 1674 if (!match_unique_match && is_set(STRaddsuffix) && numitems == 1) { 1675 Char suffix[2]; 1676 1677 suffix[1] = '\0'; 1678 switch (suf) { 1679 case 0: /* Automatic suffix */ 1680 suffix[0] = tw_suffix(looking, exp_dir, exp_name, target, name); 1681 break; 1682 1683 case -1: /* No suffix */ 1684 return numitems; 1685 1686 default: /* completion specified suffix */ 1687 suffix[0] = (Char) suf; 1688 break; 1689 } 1690 catn(word, suffix, max_word_length); 1691 } 1692 return numitems; 1693 1694 case LIST: 1695 tw_list_items(looking, numitems, list_max); 1696 tw_item_free(); 1697 return (numitems); 1698 1699 case SPELL: 1700 tw_fixword(looking, word, dir, exp_name, max_word_length); 1701 return (numitems); 1702 1703 default: 1704 xprintf("Bad tw_command\n"); 1705 return (0); 1706 } 1707} /* end t_search */ 1708 1709 1710/* extract_dir_and_name(): 1711 * parse full path in file into 2 parts: directory and file names 1712 * Should leave final slash (/) at end of dir. 1713 */ 1714static void 1715extract_dir_and_name(path, dir, name) 1716 Char *path, *dir, *name; 1717{ 1718 register Char *p; 1719 1720 p = Strrchr(path, '/'); 1721#ifdef WINNT_NATIVE 1722 if (p == NULL) 1723 p = Strrchr(path, ':'); 1724#endif /* WINNT_NATIVE */ 1725 if (p == NULL) { 1726 copyn(name, path, MAXNAMLEN); 1727 dir[0] = '\0'; 1728 } 1729 else { 1730 p++; 1731 copyn(name, p, MAXNAMLEN); 1732 copyn(dir, path, p - path); 1733 } 1734} /* end extract_dir_and_name */ 1735 1736 1737/* dollar(): 1738 * expand "/$old1/$old2/old3/" 1739 * to "/value_of_old1/value_of_old2/old3/" 1740 */ 1741Char * 1742dollar(new, old) 1743 Char *new; 1744 const Char *old; 1745{ 1746 Char *p; 1747 size_t space; 1748 1749 for (space = FILSIZ, p = new; *old && space > 0;) 1750 if (*old != '$') { 1751 *p++ = *old++; 1752 space--; 1753 } 1754 else { 1755 if (expdollar(&p, &old, &space, QUOTE) == NULL) 1756 return NULL; 1757 } 1758 *p = '\0'; 1759 return (new); 1760} /* end dollar */ 1761 1762 1763/* tilde(): 1764 * expand ~person/foo to home_directory_of_person/foo 1765 * or =<stack-entry> to <dir in stack entry> 1766 */ 1767static Char * 1768tilde(new, old) 1769 Char *new, *old; 1770{ 1771 register Char *o, *p; 1772 1773 switch (old[0]) { 1774 case '~': 1775 for (p = new, o = &old[1]; *o && *o != '/'; *p++ = *o++) 1776 continue; 1777 *p = '\0'; 1778 if (gethdir(new)) { 1779 new[0] = '\0'; 1780 return NULL; 1781 } 1782 (void) Strcat(new, o); 1783 return new; 1784 1785 case '=': 1786 if ((p = globequal(new, old)) == NULL) { 1787 *new = '\0'; 1788 return NULL; 1789 } 1790 if (p == new) 1791 return new; 1792 /*FALLTHROUGH*/ 1793 1794 default: 1795 (void) Strcpy(new, old); 1796 return new; 1797 } 1798} /* end tilde */ 1799 1800 1801/* expand_dir(): 1802 * Open the directory given, expanding ~user and $var 1803 * Optionally normalize the path given 1804 */ 1805static int 1806expand_dir(dir, edir, dfd, cmd) 1807 Char *dir, *edir; 1808 DIR **dfd; 1809 COMMAND cmd; 1810{ 1811 Char *nd = NULL; 1812 Char tdir[MAXPATHLEN + 1]; 1813 1814 if ((dollar(tdir, dir) == 0) || 1815 (tilde(edir, tdir) == 0) || 1816 !(nd = dnormalize(*edir ? edir : STRdot, symlinks == SYM_IGNORE || 1817 symlinks == SYM_EXPAND)) || 1818 ((*dfd = opendir(short2str(nd))) == NULL)) { 1819 xfree((ptr_t) nd); 1820 if (cmd == SPELL || SearchNoDirErr) 1821 return (-2); 1822 /* 1823 * From: Amos Shapira <amoss@cs.huji.ac.il> 1824 * Print a better message when completion fails 1825 */ 1826 xprintf("\n%S %s\n", 1827 *edir ? edir : 1828 (*tdir ? tdir : dir), 1829 (errno == ENOTDIR ? CGETS(30, 10, "not a directory") : 1830 (errno == ENOENT ? CGETS(30, 11, "not found") : 1831 CGETS(30, 12, "unreadable")))); 1832 NeedsRedraw = 1; 1833 return (-1); 1834 } 1835 if (nd) { 1836 if (*dir != '\0') { 1837 Char *s, *d, *p; 1838 1839 /* 1840 * Copy and append a / if there was one 1841 */ 1842 for (p = edir; *p; p++) 1843 continue; 1844 if (*--p == '/') { 1845 for (p = nd; *p; p++) 1846 continue; 1847 if (*--p != '/') 1848 p = NULL; 1849 } 1850 for (d = edir, s = nd; (*d++ = *s++) != '\0';) 1851 continue; 1852 if (!p) { 1853 *d-- = '\0'; 1854 *d = '/'; 1855 } 1856 } 1857 xfree((ptr_t) nd); 1858 } 1859 return 0; 1860} /* end expand_dir */ 1861 1862 1863/* nostat(): 1864 * Returns true if the directory should not be stat'd, 1865 * false otherwise. 1866 * This way, things won't grind to a halt when you complete in /afs 1867 * or very large directories. 1868 */ 1869static bool 1870nostat(dir) 1871 Char *dir; 1872{ 1873 struct varent *vp; 1874 register Char **cp; 1875 1876 if ((vp = adrof(STRnostat)) == NULL || (cp = vp->vec) == NULL) 1877 return FALSE; 1878 for (; *cp != NULL; cp++) { 1879 if (Strcmp(*cp, STRstar) == 0) 1880 return TRUE; 1881 if (Gmatch(dir, *cp)) 1882 return TRUE; 1883 } 1884 return FALSE; 1885} /* end nostat */ 1886 1887 1888/* filetype(): 1889 * Return a character that signifies a filetype 1890 * symbology from 4.3 ls command. 1891 */ 1892static Char 1893filetype(dir, file) 1894 Char *dir, *file; 1895{ 1896 if (dir) { 1897 Char path[512]; 1898 char *ptr; 1899 struct stat statb; 1900#ifdef S_ISCDF 1901 /* 1902 * From: veals@crchh84d.bnr.ca (Percy Veals) 1903 * An extra stat is required for HPUX CDF files. 1904 */ 1905 struct stat hpstatb; 1906#endif /* S_ISCDF */ 1907 1908 if (nostat(dir)) return(' '); 1909 1910 (void) Strcpy(path, dir); 1911 catn(path, file, (int) (sizeof(path) / sizeof(Char))); 1912 1913 if (lstat(ptr = short2str(path), &statb) != -1) 1914 /* see above #define of lstat */ 1915 { 1916#ifdef S_ISLNK 1917 if (S_ISLNK(statb.st_mode)) { /* Symbolic link */ 1918 if (adrof(STRlistlinks)) { 1919 if (stat(ptr, &statb) == -1) 1920 return ('&'); 1921 else if (S_ISDIR(statb.st_mode)) 1922 return ('>'); 1923 else 1924 return ('@'); 1925 } 1926 else 1927 return ('@'); 1928 } 1929#endif 1930#ifdef S_ISSOCK 1931 if (S_ISSOCK(statb.st_mode)) /* Socket */ 1932 return ('='); 1933#endif 1934#ifdef S_ISFIFO 1935 if (S_ISFIFO(statb.st_mode)) /* Named Pipe */ 1936 return ('|'); 1937#endif 1938#ifdef S_ISHIDDEN 1939 if (S_ISHIDDEN(statb.st_mode)) /* Hidden Directory [aix] */ 1940 return ('+'); 1941#endif 1942#ifdef S_ISCDF 1943 (void) strcat(ptr, "+"); /* Must append a '+' and re-stat(). */ 1944 if ((stat(ptr, &hpstatb) != -1) && S_ISCDF(hpstatb.st_mode)) 1945 return ('+'); /* Context Dependent Files [hpux] */ 1946#endif 1947#ifdef S_ISNWK 1948 if (S_ISNWK(statb.st_mode)) /* Network Special [hpux] */ 1949 return (':'); 1950#endif 1951#ifdef S_ISCHR 1952 if (S_ISCHR(statb.st_mode)) /* char device */ 1953 return ('%'); 1954#endif 1955#ifdef S_ISBLK 1956 if (S_ISBLK(statb.st_mode)) /* block device */ 1957 return ('#'); 1958#endif 1959#ifdef S_ISDIR 1960 if (S_ISDIR(statb.st_mode)) /* normal Directory */ 1961 return ('/'); 1962#endif 1963 if (statb.st_mode & (S_IXUSR|S_IXGRP|S_IXOTH)) 1964 return ('*'); 1965 } 1966 } 1967 return (' '); 1968} /* end filetype */ 1969 1970 1971/* isadirectory(): 1972 * Return trus if the file is a directory 1973 */ 1974static int 1975isadirectory(dir, file) /* return 1 if dir/file is a directory */ 1976 Char *dir, *file; /* uses stat rather than lstat to get dest. */ 1977{ 1978 if (dir) { 1979 Char path[MAXPATHLEN]; 1980 struct stat statb; 1981 1982 (void) Strcpy(path, dir); 1983 catn(path, file, (int) (sizeof(path) / sizeof(Char))); 1984 if (stat(short2str(path), &statb) >= 0) { /* resolve through 1985 * symlink */ 1986#ifdef S_ISSOCK 1987 if (S_ISSOCK(statb.st_mode)) /* Socket */ 1988 return 0; 1989#endif 1990#ifdef S_ISFIFO 1991 if (S_ISFIFO(statb.st_mode)) /* Named Pipe */ 1992 return 0; 1993#endif 1994 if (S_ISDIR(statb.st_mode)) /* normal Directory */ 1995 return 1; 1996 } 1997 } 1998 return 0; 1999} /* end isadirectory */ 2000 2001 2002 2003/* find_rows(): 2004 * Return how many rows needed to print sorted down columns 2005 */ 2006static int 2007find_rows(items, count, no_file_suffix) 2008 Char *items[]; 2009 int count, no_file_suffix; 2010{ 2011 register int i, columns, rows; 2012 unsigned int maxwidth = 0; 2013 2014 for (i = 0; i < count; i++) /* find widest string */ 2015 maxwidth = max(maxwidth, (unsigned int) Strlen(items[i])); 2016 2017 maxwidth += no_file_suffix ? 1 : 2; /* for the file tag and space */ 2018 columns = (TermH + 1) / maxwidth; /* PWP: terminal size change */ 2019 if (!columns) 2020 columns = 1; 2021 rows = (count + (columns - 1)) / columns; 2022 2023 return rows; 2024} /* end rows_needed_by_print_by_column */ 2025 2026 2027/* print_by_column(): 2028 * Print sorted down columns or across columns when the first 2029 * word of $listflags shell variable contains 'x'. 2030 * 2031 */ 2032void 2033print_by_column(dir, items, count, no_file_suffix) 2034 register Char *dir, *items[]; 2035 int count, no_file_suffix; 2036{ 2037 register int i, r, c, columns, rows; 2038 unsigned int w, maxwidth = 0; 2039 Char *val; 2040 bool across; 2041 2042 lbuffed = 0; /* turn off line buffering */ 2043 2044 2045 across = ((val = varval(STRlistflags)) != STRNULL) && 2046 (Strchr(val, 'x') != NULL); 2047 2048 for (i = 0; i < count; i++) /* find widest string */ 2049 maxwidth = max(maxwidth, (unsigned int) Strlen(items[i])); 2050 2051 maxwidth += no_file_suffix ? 1 : 2; /* for the file tag and space */ 2052 columns = TermH / maxwidth; /* PWP: terminal size change */ 2053 if (!columns || !isatty(didfds ? 1 : SHOUT)) 2054 columns = 1; 2055 rows = (count + (columns - 1)) / columns; 2056 2057 i = -1; 2058 for (r = 0; r < rows; r++) { 2059 for (c = 0; c < columns; c++) { 2060 i = across ? (i + 1) : (c * rows + r); 2061 2062 if (i < count) { 2063 w = (unsigned int) Strlen(items[i]); 2064 2065#ifdef COLOR_LS_F 2066 if (no_file_suffix) { 2067 /* Print the command name */ 2068 Char f = items[i][w - 1]; 2069 items[i][w - 1] = 0; 2070 print_with_color(items[i], w - 1, f); 2071 } 2072 else { 2073 /* Print filename followed by '/' or '*' or ' ' */ 2074 print_with_color(items[i], w, filetype(dir, items[i])); 2075 w++; 2076 } 2077#else /* ifndef COLOR_LS_F */ 2078 if (no_file_suffix) { 2079 /* Print the command name */ 2080 xprintf("%S", items[i]); 2081 } 2082 else { 2083 /* Print filename followed by '/' or '*' or ' ' */ 2084 xprintf("%S%c", items[i], 2085 filetype(dir, items[i])); 2086 w++; 2087 } 2088#endif /* COLOR_LS_F */ 2089 2090 if (c < (columns - 1)) /* Not last column? */ 2091 for (; w < maxwidth; w++) 2092 xputchar(' '); 2093 } 2094 else if (across) 2095 break; 2096 } 2097 if (Tty_raw_mode) 2098 xputchar('\r'); 2099 xputchar('\n'); 2100 } 2101 2102 lbuffed = 1; /* turn back on line buffering */ 2103 flush(); 2104} /* end print_by_column */ 2105 2106 2107/* StrQcmp(): 2108 * Compare strings ignoring the quoting chars 2109 */ 2110int 2111StrQcmp(str1, str2) 2112 register Char *str1, *str2; 2113{ 2114 for (; *str1 && samecase(*str1 & TRIM) == samecase(*str2 & TRIM); 2115 str1++, str2++) 2116 continue; 2117 /* 2118 * The following case analysis is necessary so that characters which look 2119 * negative collate low against normal characters but high against the 2120 * end-of-string NUL. 2121 */ 2122 if (*str1 == '\0' && *str2 == '\0') 2123 return (0); 2124 else if (*str1 == '\0') 2125 return (-1); 2126 else if (*str2 == '\0') 2127 return (1); 2128 else 2129 return ((*str1 & TRIM) - (*str2 & TRIM)); 2130} /* end StrQcmp */ 2131 2132 2133/* fcompare(): 2134 * Comparison routine for qsort 2135 */ 2136int 2137fcompare(file1, file2) 2138 Char **file1, **file2; 2139{ 2140 return (int) collate(*file1, *file2); 2141} /* end fcompare */ 2142 2143 2144/* catn(): 2145 * Concatenate src onto tail of des. 2146 * Des is a string whose maximum length is count. 2147 * Always null terminate. 2148 */ 2149void 2150catn(des, src, count) 2151 register Char *des, *src; 2152 int count; 2153{ 2154 while (--count >= 0 && *des) 2155 des++; 2156 while (--count >= 0) 2157 if ((*des++ = *src++) == 0) 2158 return; 2159 *des = '\0'; 2160} /* end catn */ 2161 2162 2163/* copyn(): 2164 * like strncpy but always leave room for trailing \0 2165 * and always null terminate. 2166 */ 2167void 2168copyn(des, src, count) 2169 register Char *des, *src; 2170 int count; 2171{ 2172 while (--count >= 0) 2173 if ((*des++ = *src++) == 0) 2174 return; 2175 *des = '\0'; 2176} /* end copyn */ 2177 2178 2179/* tgetenv(): 2180 * like it's normal string counter-part 2181 * [apollo uses that in tc.os.c, so it cannot be static] 2182 */ 2183Char * 2184tgetenv(str) 2185 Char *str; 2186{ 2187 Char **var; 2188 int len, res; 2189 2190 len = (int) Strlen(str); 2191 /* Search the STR_environ for the entry matching str. */ 2192 for (var = STR_environ; var != NULL && *var != NULL; var++) 2193 if (Strlen(*var) >= len && (*var)[len] == '=') { 2194 /* Temporarily terminate the string so we can copy the variable 2195 name. */ 2196 (*var)[len] = '\0'; 2197 res = StrQcmp(*var, str); 2198 /* Restore the '=' and return a pointer to the value of the 2199 environment variable. */ 2200 (*var)[len] = '='; 2201 if (res == 0) 2202 return (&((*var)[len + 1])); 2203 } 2204 return (NULL); 2205} /* end tgetenv */ 2206 2207 2208struct scroll_tab_list *scroll_tab = 0; 2209 2210static void 2211add_scroll_tab(item) 2212 Char *item; 2213{ 2214 struct scroll_tab_list *new_scroll; 2215 2216 new_scroll = (struct scroll_tab_list *) xmalloc((size_t) 2217 sizeof(struct scroll_tab_list)); 2218 new_scroll->element = Strsave(item); 2219 new_scroll->next = scroll_tab; 2220 scroll_tab = new_scroll; 2221} 2222 2223static void 2224choose_scroll_tab(exp_name, cnt) 2225 Char **exp_name; 2226 int cnt; 2227{ 2228 struct scroll_tab_list *loop; 2229 int tmp = cnt; 2230 Char **ptr; 2231 2232 ptr = (Char **) xmalloc((size_t) sizeof(Char *) * cnt); 2233 2234 for(loop = scroll_tab; loop && (tmp >= 0); loop = loop->next) 2235 ptr[--tmp] = loop->element; 2236 2237 qsort((ptr_t) ptr, (size_t) cnt, sizeof(Char *), 2238 (int (*) __P((const void *, const void *))) fcompare); 2239 2240 copyn(*exp_name, ptr[curchoice], (int) Strlen(ptr[curchoice])); 2241 xfree((ptr_t) ptr); 2242} 2243 2244static void 2245free_scroll_tab() 2246{ 2247 struct scroll_tab_list *loop; 2248 2249 while(scroll_tab) { 2250 loop = scroll_tab; 2251 scroll_tab = scroll_tab->next; 2252 xfree((ptr_t) loop->element); 2253 xfree((ptr_t) loop); 2254 } 2255} 2256