1 /* $NetBSD: filecomplete.c,v 1.67 2021/03/28 13:39:39 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jaromir Dolecek. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include "config.h" 33 #if !defined(lint) && !defined(SCCSID) 34 __RCSID("$NetBSD: filecomplete.c,v 1.67 2021/03/28 13:39:39 christos Exp $"); 35 #endif /* not lint && not SCCSID */ 36 37 #include <sys/types.h> 38 #include <sys/stat.h> 39 #include <dirent.h> 40 #include <errno.h> 41 #include <fcntl.h> 42 #include <limits.h> 43 #include <pwd.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <string.h> 47 #include <unistd.h> 48 49 #include "el.h" 50 #include "filecomplete.h" 51 52 static const wchar_t break_chars[] = L" \t\n\"\\'`@$><=;|&{("; 53 54 /********************************/ 55 /* completion functions */ 56 57 /* 58 * does tilde expansion of strings of type ``~user/foo'' 59 * if ``user'' isn't valid user name or ``txt'' doesn't start 60 * w/ '~', returns pointer to strdup()ed copy of ``txt'' 61 * 62 * it's the caller's responsibility to free() the returned string 63 */ 64 char * 65 fn_tilde_expand(const char *txt) 66 { 67 #if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT) 68 struct passwd pwres; 69 char pwbuf[1024]; 70 #endif 71 struct passwd *pass; 72 char *temp; 73 size_t len = 0; 74 75 if (txt[0] != '~') 76 return strdup(txt); 77 78 temp = strchr(txt + 1, '/'); 79 if (temp == NULL) { 80 temp = strdup(txt + 1); 81 if (temp == NULL) 82 return NULL; 83 } else { 84 /* text until string after slash */ 85 len = (size_t)(temp - txt + 1); 86 temp = el_calloc(len, sizeof(*temp)); 87 if (temp == NULL) 88 return NULL; 89 (void)strlcpy(temp, txt + 1, len - 1); 90 } 91 if (temp[0] == 0) { 92 #ifdef HAVE_GETPW_R_POSIX 93 if (getpwuid_r(getuid(), &pwres, pwbuf, sizeof(pwbuf), 94 &pass) != 0) 95 pass = NULL; 96 #elif HAVE_GETPW_R_DRAFT 97 pass = getpwuid_r(getuid(), &pwres, pwbuf, sizeof(pwbuf)); 98 #else 99 pass = getpwuid(getuid()); 100 #endif 101 } else { 102 #ifdef HAVE_GETPW_R_POSIX 103 if (getpwnam_r(temp, &pwres, pwbuf, sizeof(pwbuf), &pass) != 0) 104 pass = NULL; 105 #elif HAVE_GETPW_R_DRAFT 106 pass = getpwnam_r(temp, &pwres, pwbuf, sizeof(pwbuf)); 107 #else 108 pass = getpwnam(temp); 109 #endif 110 } 111 el_free(temp); /* value no more needed */ 112 if (pass == NULL) 113 return strdup(txt); 114 115 /* update pointer txt to point at string immedially following */ 116 /* first slash */ 117 txt += len; 118 119 len = strlen(pass->pw_dir) + 1 + strlen(txt) + 1; 120 temp = el_calloc(len, sizeof(*temp)); 121 if (temp == NULL) 122 return NULL; 123 (void)snprintf(temp, len, "%s/%s", pass->pw_dir, txt); 124 125 return temp; 126 } 127 128 static int 129 needs_escaping(char c) 130 { 131 switch (c) { 132 case '\'': 133 case '"': 134 case '(': 135 case ')': 136 case '\\': 137 case '<': 138 case '>': 139 case '$': 140 case '#': 141 case ' ': 142 case '\n': 143 case '\t': 144 case '?': 145 case ';': 146 case '`': 147 case '@': 148 case '=': 149 case '|': 150 case '{': 151 case '}': 152 case '&': 153 case '*': 154 case '[': 155 return 1; 156 default: 157 return 0; 158 } 159 } 160 161 static int 162 needs_dquote_escaping(char c) 163 { 164 switch (c) { 165 case '"': 166 case '\\': 167 case '`': 168 case '$': 169 return 1; 170 default: 171 return 0; 172 } 173 } 174 175 176 static wchar_t * 177 unescape_string(const wchar_t *string, size_t length) 178 { 179 size_t i; 180 size_t j = 0; 181 wchar_t *unescaped = el_calloc(length + 1, sizeof(*string)); 182 if (unescaped == NULL) 183 return NULL; 184 for (i = 0; i < length ; i++) { 185 if (string[i] == '\\') 186 continue; 187 unescaped[j++] = string[i]; 188 } 189 unescaped[j] = 0; 190 return unescaped; 191 } 192 193 static char * 194 escape_filename(EditLine * el, const char *filename, int single_match, 195 const char *(*app_func)(const char *)) 196 { 197 size_t original_len = 0; 198 size_t escaped_character_count = 0; 199 size_t offset = 0; 200 size_t newlen; 201 const char *s; 202 char c; 203 size_t s_quoted = 0; /* does the input contain a single quote */ 204 size_t d_quoted = 0; /* does the input contain a double quote */ 205 char *escaped_str; 206 wchar_t *temp = el->el_line.buffer; 207 const char *append_char = NULL; 208 209 if (filename == NULL) 210 return NULL; 211 212 while (temp != el->el_line.cursor) { 213 /* 214 * If we see a single quote but have not seen a double quote 215 * so far set/unset s_quote 216 */ 217 if (temp[0] == '\'' && !d_quoted) 218 s_quoted = !s_quoted; 219 /* 220 * vice versa to the above condition 221 */ 222 else if (temp[0] == '"' && !s_quoted) 223 d_quoted = !d_quoted; 224 temp++; 225 } 226 227 /* Count number of special characters so that we can calculate 228 * number of extra bytes needed in the new string 229 */ 230 for (s = filename; *s; s++, original_len++) { 231 c = *s; 232 /* Inside a single quote only single quotes need escaping */ 233 if (s_quoted && c == '\'') { 234 escaped_character_count += 3; 235 continue; 236 } 237 /* Inside double quotes only ", \, ` and $ need escaping */ 238 if (d_quoted && needs_dquote_escaping(c)) { 239 escaped_character_count++; 240 continue; 241 } 242 if (!s_quoted && !d_quoted && needs_escaping(c)) 243 escaped_character_count++; 244 } 245 246 newlen = original_len + escaped_character_count + 1; 247 if (s_quoted || d_quoted) 248 newlen++; 249 250 if (single_match && app_func) 251 newlen++; 252 253 if ((escaped_str = el_malloc(newlen)) == NULL) 254 return NULL; 255 256 for (s = filename; *s; s++) { 257 c = *s; 258 if (!needs_escaping(c)) { 259 /* no escaping is required continue as usual */ 260 escaped_str[offset++] = c; 261 continue; 262 } 263 264 /* single quotes inside single quotes require special handling */ 265 if (c == '\'' && s_quoted) { 266 escaped_str[offset++] = '\''; 267 escaped_str[offset++] = '\\'; 268 escaped_str[offset++] = '\''; 269 escaped_str[offset++] = '\''; 270 continue; 271 } 272 273 /* Otherwise no escaping needed inside single quotes */ 274 if (s_quoted) { 275 escaped_str[offset++] = c; 276 continue; 277 } 278 279 /* No escaping needed inside a double quoted string either 280 * unless we see a '$', '\', '`', or '"' (itself) 281 */ 282 if (d_quoted && !needs_dquote_escaping(c)) { 283 escaped_str[offset++] = c; 284 continue; 285 } 286 287 /* If we reach here that means escaping is actually needed */ 288 escaped_str[offset++] = '\\'; 289 escaped_str[offset++] = c; 290 } 291 292 if (single_match && app_func) { 293 escaped_str[offset] = 0; 294 append_char = app_func(filename); 295 /* we want to append space only if we are not inside quotes */ 296 if (append_char[0] == ' ') { 297 if (!s_quoted && !d_quoted) 298 escaped_str[offset++] = append_char[0]; 299 } else 300 escaped_str[offset++] = append_char[0]; 301 } 302 303 /* close the quotes if single match and the match is not a directory */ 304 if (single_match && (append_char && append_char[0] == ' ')) { 305 if (s_quoted) 306 escaped_str[offset++] = '\''; 307 else if (d_quoted) 308 escaped_str[offset++] = '"'; 309 } 310 311 escaped_str[offset] = 0; 312 return escaped_str; 313 } 314 315 /* 316 * return first found file name starting by the ``text'' or NULL if no 317 * such file can be found 318 * value of ``state'' is ignored 319 * 320 * it's the caller's responsibility to free the returned string 321 */ 322 char * 323 fn_filename_completion_function(const char *text, int state) 324 { 325 static DIR *dir = NULL; 326 static char *filename = NULL, *dirname = NULL, *dirpath = NULL; 327 static size_t filename_len = 0; 328 struct dirent *entry; 329 char *temp; 330 size_t len; 331 332 if (state == 0 || dir == NULL) { 333 temp = strrchr(text, '/'); 334 if (temp) { 335 char *nptr; 336 temp++; 337 nptr = el_realloc(filename, (strlen(temp) + 1) * 338 sizeof(*nptr)); 339 if (nptr == NULL) { 340 el_free(filename); 341 filename = NULL; 342 return NULL; 343 } 344 filename = nptr; 345 (void)strcpy(filename, temp); 346 len = (size_t)(temp - text); /* including last slash */ 347 348 nptr = el_realloc(dirname, (len + 1) * 349 sizeof(*nptr)); 350 if (nptr == NULL) { 351 el_free(dirname); 352 dirname = NULL; 353 return NULL; 354 } 355 dirname = nptr; 356 (void)strlcpy(dirname, text, len + 1); 357 } else { 358 el_free(filename); 359 if (*text == 0) 360 filename = NULL; 361 else { 362 filename = strdup(text); 363 if (filename == NULL) 364 return NULL; 365 } 366 el_free(dirname); 367 dirname = NULL; 368 } 369 370 if (dir != NULL) { 371 (void)closedir(dir); 372 dir = NULL; 373 } 374 375 /* support for ``~user'' syntax */ 376 377 el_free(dirpath); 378 dirpath = NULL; 379 if (dirname == NULL) { 380 if ((dirname = strdup("")) == NULL) 381 return NULL; 382 dirpath = strdup("./"); 383 } else if (*dirname == '~') 384 dirpath = fn_tilde_expand(dirname); 385 else 386 dirpath = strdup(dirname); 387 388 if (dirpath == NULL) 389 return NULL; 390 391 dir = opendir(dirpath); 392 if (!dir) 393 return NULL; /* cannot open the directory */ 394 395 /* will be used in cycle */ 396 filename_len = filename ? strlen(filename) : 0; 397 } 398 399 /* find the match */ 400 while ((entry = readdir(dir)) != NULL) { 401 /* skip . and .. */ 402 if (entry->d_name[0] == '.' && (!entry->d_name[1] 403 || (entry->d_name[1] == '.' && !entry->d_name[2]))) 404 continue; 405 if (filename_len == 0) 406 break; 407 /* otherwise, get first entry where first */ 408 /* filename_len characters are equal */ 409 if (entry->d_name[0] == filename[0] 410 #if HAVE_STRUCT_DIRENT_D_NAMLEN 411 && entry->d_namlen >= filename_len 412 #else 413 && strlen(entry->d_name) >= filename_len 414 #endif 415 && strncmp(entry->d_name, filename, 416 filename_len) == 0) 417 break; 418 } 419 420 if (entry) { /* match found */ 421 422 #if HAVE_STRUCT_DIRENT_D_NAMLEN 423 len = entry->d_namlen; 424 #else 425 len = strlen(entry->d_name); 426 #endif 427 428 len = strlen(dirname) + len + 1; 429 temp = el_calloc(len, sizeof(*temp)); 430 if (temp == NULL) 431 return NULL; 432 (void)snprintf(temp, len, "%s%s", dirname, entry->d_name); 433 } else { 434 (void)closedir(dir); 435 dir = NULL; 436 temp = NULL; 437 } 438 439 return temp; 440 } 441 442 443 static const char * 444 append_char_function(const char *name) 445 { 446 struct stat stbuf; 447 char *expname = *name == '~' ? fn_tilde_expand(name) : NULL; 448 const char *rs = " "; 449 450 if (stat(expname ? expname : name, &stbuf) == -1) 451 goto out; 452 if (S_ISDIR(stbuf.st_mode)) 453 rs = "/"; 454 out: 455 if (expname) 456 el_free(expname); 457 return rs; 458 } 459 /* 460 * returns list of completions for text given 461 * non-static for readline. 462 */ 463 char ** completion_matches(const char *, char *(*)(const char *, int)); 464 char ** 465 completion_matches(const char *text, char *(*genfunc)(const char *, int)) 466 { 467 char **match_list = NULL, *retstr, *prevstr; 468 size_t match_list_len, max_equal, which, i; 469 size_t matches; 470 471 matches = 0; 472 match_list_len = 1; 473 while ((retstr = (*genfunc) (text, (int)matches)) != NULL) { 474 /* allow for list terminator here */ 475 if (matches + 3 >= match_list_len) { 476 char **nmatch_list; 477 while (matches + 3 >= match_list_len) 478 match_list_len <<= 1; 479 nmatch_list = el_realloc(match_list, 480 match_list_len * sizeof(*nmatch_list)); 481 if (nmatch_list == NULL) { 482 el_free(match_list); 483 return NULL; 484 } 485 match_list = nmatch_list; 486 487 } 488 match_list[++matches] = retstr; 489 } 490 491 if (!match_list) 492 return NULL; /* nothing found */ 493 494 /* find least denominator and insert it to match_list[0] */ 495 which = 2; 496 prevstr = match_list[1]; 497 max_equal = strlen(prevstr); 498 for (; which <= matches; which++) { 499 for (i = 0; i < max_equal && 500 prevstr[i] == match_list[which][i]; i++) 501 continue; 502 max_equal = i; 503 } 504 505 retstr = el_calloc(max_equal + 1, sizeof(*retstr)); 506 if (retstr == NULL) { 507 el_free(match_list); 508 return NULL; 509 } 510 (void)strlcpy(retstr, match_list[1], max_equal + 1); 511 match_list[0] = retstr; 512 513 /* add NULL as last pointer to the array */ 514 match_list[matches + 1] = NULL; 515 516 return match_list; 517 } 518 519 /* 520 * Sort function for qsort(). Just wrapper around strcasecmp(). 521 */ 522 static int 523 _fn_qsort_string_compare(const void *i1, const void *i2) 524 { 525 const char *s1 = ((const char * const *)i1)[0]; 526 const char *s2 = ((const char * const *)i2)[0]; 527 528 return strcasecmp(s1, s2); 529 } 530 531 /* 532 * Display list of strings in columnar format on readline's output stream. 533 * 'matches' is list of strings, 'num' is number of strings in 'matches', 534 * 'width' is maximum length of string in 'matches'. 535 * 536 * matches[0] is not one of the match strings, but it is counted in 537 * num, so the strings are matches[1] *through* matches[num-1]. 538 */ 539 void 540 fn_display_match_list(EditLine * el, char **matches, size_t num, size_t width, 541 const char *(*app_func) (const char *)) 542 { 543 size_t line, lines, col, cols, thisguy; 544 int screenwidth = el->el_terminal.t_size.h; 545 if (app_func == NULL) 546 app_func = append_char_function; 547 548 /* Ignore matches[0]. Avoid 1-based array logic below. */ 549 matches++; 550 num--; 551 552 /* 553 * Find out how many entries can be put on one line; count 554 * with one space between strings the same way it's printed. 555 */ 556 cols = (size_t)screenwidth / (width + 2); 557 if (cols == 0) 558 cols = 1; 559 560 /* how many lines of output, rounded up */ 561 lines = (num + cols - 1) / cols; 562 563 /* Sort the items. */ 564 qsort(matches, num, sizeof(char *), _fn_qsort_string_compare); 565 566 /* 567 * On the ith line print elements i, i+lines, i+lines*2, etc. 568 */ 569 for (line = 0; line < lines; line++) { 570 for (col = 0; col < cols; col++) { 571 thisguy = line + col * lines; 572 if (thisguy >= num) 573 break; 574 (void)fprintf(el->el_outfile, "%s%s%s", 575 col == 0 ? "" : " ", matches[thisguy], 576 (*app_func)(matches[thisguy])); 577 (void)fprintf(el->el_outfile, "%-*s", 578 (int) (width - strlen(matches[thisguy])), ""); 579 } 580 (void)fprintf(el->el_outfile, "\n"); 581 } 582 } 583 584 static wchar_t * 585 find_word_to_complete(const wchar_t * cursor, const wchar_t * buffer, 586 const wchar_t * word_break, const wchar_t * special_prefixes, size_t * length, 587 int do_unescape) 588 { 589 /* We now look backwards for the start of a filename/variable word */ 590 const wchar_t *ctemp = cursor; 591 wchar_t *temp; 592 size_t len; 593 594 /* if the cursor is placed at a slash or a quote, we need to find the 595 * word before it 596 */ 597 if (ctemp > buffer) { 598 switch (ctemp[-1]) { 599 case '\\': 600 case '\'': 601 case '"': 602 ctemp--; 603 break; 604 default: 605 break; 606 } 607 } 608 609 for (;;) { 610 if (ctemp <= buffer) 611 break; 612 if (wcschr(word_break, ctemp[-1])) { 613 if (ctemp - buffer >= 2 && ctemp[-2] == '\\') { 614 ctemp -= 2; 615 continue; 616 } 617 break; 618 } 619 if (special_prefixes && wcschr(special_prefixes, ctemp[-1])) 620 break; 621 ctemp--; 622 } 623 624 len = (size_t) (cursor - ctemp); 625 if (len == 1 && (ctemp[0] == '\'' || ctemp[0] == '"')) { 626 len = 0; 627 ctemp++; 628 } 629 *length = len; 630 if (do_unescape) { 631 wchar_t *unescaped_word = unescape_string(ctemp, len); 632 if (unescaped_word == NULL) 633 return NULL; 634 return unescaped_word; 635 } 636 temp = el_malloc((len + 1) * sizeof(*temp)); 637 (void) wcsncpy(temp, ctemp, len); 638 temp[len] = '\0'; 639 return temp; 640 } 641 642 /* 643 * Complete the word at or before point, 644 * 'what_to_do' says what to do with the completion. 645 * \t means do standard completion. 646 * `?' means list the possible completions. 647 * `*' means insert all of the possible completions. 648 * `!' means to do standard completion, and list all possible completions if 649 * there is more than one. 650 * 651 * Note: '*' support is not implemented 652 * '!' could never be invoked 653 */ 654 int 655 fn_complete2(EditLine *el, 656 char *(*complete_func)(const char *, int), 657 char **(*attempted_completion_function)(const char *, int, int), 658 const wchar_t *word_break, const wchar_t *special_prefixes, 659 const char *(*app_func)(const char *), size_t query_items, 660 int *completion_type, int *over, int *point, int *end, 661 unsigned int flags) 662 { 663 const LineInfoW *li; 664 wchar_t *temp; 665 char **matches; 666 char *completion; 667 size_t len; 668 int what_to_do = '\t'; 669 int retval = CC_NORM; 670 int do_unescape = flags & FN_QUOTE_MATCH; 671 672 if (el->el_state.lastcmd == el->el_state.thiscmd) 673 what_to_do = '?'; 674 675 /* readline's rl_complete() has to be told what we did... */ 676 if (completion_type != NULL) 677 *completion_type = what_to_do; 678 679 if (!complete_func) 680 complete_func = fn_filename_completion_function; 681 if (!app_func) 682 app_func = append_char_function; 683 684 li = el_wline(el); 685 temp = find_word_to_complete(li->cursor, 686 li->buffer, word_break, special_prefixes, &len, do_unescape); 687 if (temp == NULL) 688 goto out; 689 690 /* these can be used by function called in completion_matches() */ 691 /* or (*attempted_completion_function)() */ 692 if (point != NULL) 693 *point = (int)(li->cursor - li->buffer); 694 if (end != NULL) 695 *end = (int)(li->lastchar - li->buffer); 696 697 if (attempted_completion_function) { 698 int cur_off = (int)(li->cursor - li->buffer); 699 matches = (*attempted_completion_function)( 700 ct_encode_string(temp, &el->el_scratch), 701 cur_off - (int)len, cur_off); 702 } else 703 matches = NULL; 704 if (!attempted_completion_function || 705 (over != NULL && !*over && !matches)) 706 matches = completion_matches( 707 ct_encode_string(temp, &el->el_scratch), complete_func); 708 709 if (over != NULL) 710 *over = 0; 711 712 if (matches == NULL) { 713 goto out; 714 } 715 int i; 716 size_t matches_num, maxlen, match_len, match_display=1; 717 int single_match = matches[2] == NULL && 718 (matches[1] == NULL || strcmp(matches[0], matches[1]) == 0); 719 720 retval = CC_REFRESH; 721 722 if (matches[0][0] != '\0') { 723 el_deletestr(el, (int)len); 724 if (flags & FN_QUOTE_MATCH) 725 completion = escape_filename(el, matches[0], 726 single_match, app_func); 727 else 728 completion = strdup(matches[0]); 729 if (completion == NULL) 730 goto out; 731 732 /* 733 * Replace the completed string with the common part of 734 * all possible matches if there is a possible completion. 735 */ 736 el_winsertstr(el, 737 ct_decode_string(completion, &el->el_scratch)); 738 739 if (single_match && attempted_completion_function && 740 !(flags & FN_QUOTE_MATCH)) 741 { 742 /* 743 * We found an exact match. Add a space after 744 * it, unless we do filename completion and the 745 * object is a directory. Also do necessary 746 * escape quoting 747 */ 748 el_winsertstr(el, ct_decode_string( 749 (*app_func)(completion), &el->el_scratch)); 750 } 751 free(completion); 752 } 753 754 755 if (!single_match && (what_to_do == '!' || what_to_do == '?')) { 756 /* 757 * More than one match and requested to list possible 758 * matches. 759 */ 760 761 for(i = 1, maxlen = 0; matches[i]; i++) { 762 match_len = strlen(matches[i]); 763 if (match_len > maxlen) 764 maxlen = match_len; 765 } 766 /* matches[1] through matches[i-1] are available */ 767 matches_num = (size_t)(i - 1); 768 769 /* newline to get on next line from command line */ 770 (void)fprintf(el->el_outfile, "\n"); 771 772 /* 773 * If there are too many items, ask user for display 774 * confirmation. 775 */ 776 if (matches_num > query_items) { 777 (void)fprintf(el->el_outfile, 778 "Display all %zu possibilities? (y or n) ", 779 matches_num); 780 (void)fflush(el->el_outfile); 781 if (getc(stdin) != 'y') 782 match_display = 0; 783 (void)fprintf(el->el_outfile, "\n"); 784 } 785 786 if (match_display) { 787 /* 788 * Interface of this function requires the 789 * strings be matches[1..num-1] for compat. 790 * We have matches_num strings not counting 791 * the prefix in matches[0], so we need to 792 * add 1 to matches_num for the call. 793 */ 794 fn_display_match_list(el, matches, 795 matches_num+1, maxlen, app_func); 796 } 797 retval = CC_REDISPLAY; 798 } else if (matches[0][0]) { 799 /* 800 * There was some common match, but the name was 801 * not complete enough. Next tab will print possible 802 * completions. 803 */ 804 el_beep(el); 805 } else { 806 /* lcd is not a valid object - further specification */ 807 /* is needed */ 808 el_beep(el); 809 retval = CC_NORM; 810 } 811 812 /* free elements of array and the array itself */ 813 for (i = 0; matches[i]; i++) 814 el_free(matches[i]); 815 el_free(matches); 816 matches = NULL; 817 818 out: 819 el_free(temp); 820 return retval; 821 } 822 823 int 824 fn_complete(EditLine *el, 825 char *(*complete_func)(const char *, int), 826 char **(*attempted_completion_function)(const char *, int, int), 827 const wchar_t *word_break, const wchar_t *special_prefixes, 828 const char *(*app_func)(const char *), size_t query_items, 829 int *completion_type, int *over, int *point, int *end) 830 { 831 return fn_complete2(el, complete_func, attempted_completion_function, 832 word_break, special_prefixes, app_func, query_items, 833 completion_type, over, point, end, 834 attempted_completion_function ? 0 : FN_QUOTE_MATCH); 835 } 836 837 /* 838 * el-compatible wrapper around rl_complete; needed for key binding 839 */ 840 /* ARGSUSED */ 841 unsigned char 842 _el_fn_complete(EditLine *el, int ch __attribute__((__unused__))) 843 { 844 return (unsigned char)fn_complete(el, NULL, NULL, 845 break_chars, NULL, NULL, (size_t)100, 846 NULL, NULL, NULL, NULL); 847 } 848 849 /* 850 * el-compatible wrapper around rl_complete; needed for key binding 851 */ 852 /* ARGSUSED */ 853 unsigned char 854 _el_fn_sh_complete(EditLine *el, int ch) 855 { 856 return _el_fn_complete(el, ch); 857 } 858