filecomplete.c revision 296175
190792Sgshapiro/* $NetBSD: filecomplete.c,v 1.40 2016/02/17 19:47:49 christos Exp $ */ 2261363Sgshapiro 390792Sgshapiro/*- 490792Sgshapiro * Copyright (c) 1997 The NetBSD Foundation, Inc. 590792Sgshapiro * All rights reserved. 690792Sgshapiro * 790792Sgshapiro * This code is derived from software contributed to The NetBSD Foundation 890792Sgshapiro * by Jaromir Dolecek. 990792Sgshapiro * 1090792Sgshapiro * Redistribution and use in source and binary forms, with or without 1194334Sgshapiro * modification, are permitted provided that the following conditions 12266692Sgshapiro * are met: 1394334Sgshapiro * 1. Redistributions of source code must retain the above copyright 1490792Sgshapiro * notice, this list of conditions and the following disclaimer. 1590792Sgshapiro * 2. Redistributions in binary form must reproduce the above copyright 1690792Sgshapiro * notice, this list of conditions and the following disclaimer in the 1790792Sgshapiro * documentation and/or other materials provided with the distribution. 1890792Sgshapiro * 1990792Sgshapiro * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 2090792Sgshapiro * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 2190792Sgshapiro * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 2290792Sgshapiro * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23244833Sgshapiro * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 2490792Sgshapiro * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 2590792Sgshapiro * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2690792Sgshapiro * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27244833Sgshapiro * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28244833Sgshapiro * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29244833Sgshapiro * POSSIBILITY OF SUCH DAMAGE. 30244833Sgshapiro */ 31244833Sgshapiro 32243649Sume#include "config.h" 33243649Sume#if !defined(lint) && !defined(SCCSID) 34243649Sume__RCSID("$NetBSD: filecomplete.c,v 1.40 2016/02/17 19:47:49 christos Exp $"); 35243649Sume#endif /* not lint && not SCCSID */ 3690792Sgshapiro#include <sys/cdefs.h> 3790792Sgshapiro__FBSDID("$FreeBSD: head/lib/libedit/filecomplete.c 296175 2016-02-29 00:15:25Z pfg $"); 3890792Sgshapiro 3998121Sgshapiro#include <sys/types.h> 4090792Sgshapiro#include <sys/stat.h> 4190792Sgshapiro#include <dirent.h> 4290792Sgshapiro#include <errno.h> 4390792Sgshapiro#include <fcntl.h> 4490792Sgshapiro#include <limits.h> 4590792Sgshapiro#include <pwd.h> 4690792Sgshapiro#include <stdio.h> 4790792Sgshapiro#include <stdlib.h> 4890792Sgshapiro#include <string.h> 4990792Sgshapiro#include <unistd.h> 5090792Sgshapiro 5190792Sgshapiro#include "el.h" 5290792Sgshapiro#include "filecomplete.h" 5390792Sgshapiro 5490792Sgshapirostatic const Char break_chars[] = { ' ', '\t', '\n', '"', '\\', '\'', '`', '@', 5590792Sgshapiro '$', '>', '<', '=', ';', '|', '&', '{', '(', '\0' }; 5690792Sgshapiro/* Tilde is deliberately omitted here, we treat it specially. */ 5790792Sgshapirostatic const Char extra_quote_chars[] = { ')', '}', '*', '?', '[', '$', '\0' }; 5890792Sgshapiro 59243649Sume 6090792Sgshapiro/********************************/ 6190792Sgshapiro/* completion functions */ 6290792Sgshapiro 6390792Sgshapiro/* 6490792Sgshapiro * does tilde expansion of strings of type ``~user/foo'' 6590792Sgshapiro * if ``user'' isn't valid user name or ``txt'' doesn't start 6690792Sgshapiro * w/ '~', returns pointer to strdup()ed copy of ``txt'' 6790792Sgshapiro * 6890792Sgshapiro * it's the caller's responsibility to free() the returned string 6990792Sgshapiro */ 7090792Sgshapirochar * 7190792Sgshapirofn_tilde_expand(const char *txt) 7290792Sgshapiro{ 7390792Sgshapiro#if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT) 7490792Sgshapiro struct passwd pwres; 7590792Sgshapiro char pwbuf[1024]; 7690792Sgshapiro#endif 7790792Sgshapiro struct passwd *pass; 7890792Sgshapiro char *temp; 7990792Sgshapiro size_t len = 0; 80243649Sume 81243649Sume if (txt[0] != '~') 8290792Sgshapiro return strdup(txt); 8390792Sgshapiro 8490792Sgshapiro temp = strchr(txt + 1, '/'); 8590792Sgshapiro if (temp == NULL) { 8690792Sgshapiro temp = strdup(txt + 1); 8790792Sgshapiro if (temp == NULL) 8890792Sgshapiro return NULL; 8990792Sgshapiro } else { 9090792Sgshapiro /* text until string after slash */ 9190792Sgshapiro len = (size_t)(temp - txt + 1); 9290792Sgshapiro temp = el_malloc(len * sizeof(*temp)); 9390792Sgshapiro if (temp == NULL) 9490792Sgshapiro return NULL; 9590792Sgshapiro (void)strncpy(temp, txt + 1, len - 2); 9690792Sgshapiro temp[len - 2] = '\0'; 9790792Sgshapiro } 9890792Sgshapiro if (temp[0] == 0) { 9990792Sgshapiro#ifdef HAVE_GETPW_R_POSIX 10090792Sgshapiro if (getpwuid_r(getuid(), &pwres, pwbuf, sizeof(pwbuf), 10190792Sgshapiro &pass) != 0) 10290792Sgshapiro pass = NULL; 10390792Sgshapiro#elif HAVE_GETPW_R_DRAFT 10490792Sgshapiro pass = getpwuid_r(getuid(), &pwres, pwbuf, sizeof(pwbuf)); 10590792Sgshapiro#else 10690792Sgshapiro pass = getpwuid(getuid()); 10790792Sgshapiro#endif 108243649Sume } else { 10990792Sgshapiro#ifdef HAVE_GETPW_R_POSIX 11090792Sgshapiro if (getpwnam_r(temp, &pwres, pwbuf, sizeof(pwbuf), &pass) != 0) 11190792Sgshapiro pass = NULL; 11290792Sgshapiro#elif HAVE_GETPW_R_DRAFT 11390792Sgshapiro pass = getpwnam_r(temp, &pwres, pwbuf, sizeof(pwbuf)); 11490792Sgshapiro#else 11590792Sgshapiro pass = getpwnam(temp); 11690792Sgshapiro#endif 11790792Sgshapiro } 11890792Sgshapiro el_free(temp); /* value no more needed */ 11990792Sgshapiro if (pass == NULL) 12090792Sgshapiro return strdup(txt); 12190792Sgshapiro 12290792Sgshapiro /* update pointer txt to point at string immedially following */ 12390792Sgshapiro /* first slash */ 12490792Sgshapiro txt += len; 12590792Sgshapiro 12690792Sgshapiro len = strlen(pass->pw_dir) + 1 + strlen(txt) + 1; 12790792Sgshapiro temp = el_malloc(len * sizeof(*temp)); 12890792Sgshapiro if (temp == NULL) 12990792Sgshapiro return NULL; 13090792Sgshapiro (void)snprintf(temp, len, "%s/%s", pass->pw_dir, txt); 13190792Sgshapiro 13290792Sgshapiro return temp; 13390792Sgshapiro} 13490792Sgshapiro 13590792Sgshapiro 13690792Sgshapiro/* 13790792Sgshapiro * return first found file name starting by the ``text'' or NULL if no 13890792Sgshapiro * such file can be found 13990792Sgshapiro * value of ``state'' is ignored 14090792Sgshapiro * 14190792Sgshapiro * it's the caller's responsibility to free the returned string 14290792Sgshapiro */ 14390792Sgshapirochar * 14490792Sgshapirofn_filename_completion_function(const char *text, int state) 14590792Sgshapiro{ 14690792Sgshapiro static DIR *dir = NULL; 14790792Sgshapiro static char *filename = NULL, *dirname = NULL, *dirpath = NULL; 14890792Sgshapiro static size_t filename_len = 0; 14990792Sgshapiro struct dirent *entry; 15090792Sgshapiro char *temp; 15190792Sgshapiro size_t len; 15290792Sgshapiro 15390792Sgshapiro if (state == 0 || dir == NULL) { 15490792Sgshapiro temp = strrchr(text, '/'); 15590792Sgshapiro if (temp) { 15690792Sgshapiro char *nptr; 15790792Sgshapiro temp++; 15890792Sgshapiro nptr = el_realloc(filename, (strlen(temp) + 1) * 15990792Sgshapiro sizeof(*nptr)); 16090792Sgshapiro if (nptr == NULL) { 16190792Sgshapiro el_free(filename); 16290792Sgshapiro filename = NULL; 16390792Sgshapiro return NULL; 16490792Sgshapiro } 16590792Sgshapiro filename = nptr; 16690792Sgshapiro (void)strcpy(filename, temp); 16790792Sgshapiro len = (size_t)(temp - text); /* including last slash */ 16890792Sgshapiro 16990792Sgshapiro nptr = el_realloc(dirname, (len + 1) * 17090792Sgshapiro sizeof(*nptr)); 17190792Sgshapiro if (nptr == NULL) { 17290792Sgshapiro el_free(dirname); 17390792Sgshapiro dirname = NULL; 17490792Sgshapiro return NULL; 17590792Sgshapiro } 17690792Sgshapiro dirname = nptr; 17790792Sgshapiro (void)strncpy(dirname, text, len); 17890792Sgshapiro dirname[len] = '\0'; 17990792Sgshapiro } else { 18090792Sgshapiro el_free(filename); 18190792Sgshapiro if (*text == 0) 18290792Sgshapiro filename = NULL; 18390792Sgshapiro else { 18490792Sgshapiro filename = strdup(text); 18590792Sgshapiro if (filename == NULL) 18690792Sgshapiro return NULL; 18790792Sgshapiro } 18890792Sgshapiro el_free(dirname); 18990792Sgshapiro dirname = NULL; 19090792Sgshapiro } 19190792Sgshapiro 19290792Sgshapiro if (dir != NULL) { 19390792Sgshapiro (void)closedir(dir); 19490792Sgshapiro dir = NULL; 19590792Sgshapiro } 19690792Sgshapiro 19790792Sgshapiro /* support for ``~user'' syntax */ 19890792Sgshapiro 19990792Sgshapiro el_free(dirpath); 20090792Sgshapiro dirpath = NULL; 20190792Sgshapiro if (dirname == NULL) { 20290792Sgshapiro if ((dirname = strdup("")) == NULL) 20390792Sgshapiro return NULL; 20490792Sgshapiro dirpath = strdup("./"); 20590792Sgshapiro } else if (*dirname == '~') 20690792Sgshapiro dirpath = fn_tilde_expand(dirname); 20790792Sgshapiro else 20890792Sgshapiro dirpath = strdup(dirname); 20990792Sgshapiro 21090792Sgshapiro if (dirpath == NULL) 21190792Sgshapiro return NULL; 21290792Sgshapiro 21390792Sgshapiro dir = opendir(dirpath); 21498121Sgshapiro if (!dir) 21598121Sgshapiro return NULL; /* cannot open the directory */ 21698121Sgshapiro 217132943Sgshapiro /* will be used in cycle */ 21898121Sgshapiro filename_len = filename ? strlen(filename) : 0; 21998121Sgshapiro } 22098121Sgshapiro 22198121Sgshapiro /* find the match */ 22298121Sgshapiro while ((entry = readdir(dir)) != NULL) { 22398121Sgshapiro /* skip . and .. */ 22498121Sgshapiro if (entry->d_name[0] == '.' && (!entry->d_name[1] 22598121Sgshapiro || (entry->d_name[1] == '.' && !entry->d_name[2]))) 22698121Sgshapiro continue; 22798121Sgshapiro if (filename_len == 0) 22898121Sgshapiro break; 22998121Sgshapiro /* otherwise, get first entry where first */ 23098121Sgshapiro /* filename_len characters are equal */ 23198121Sgshapiro if (entry->d_name[0] == filename[0] 23298121Sgshapiro#if HAVE_STRUCT_DIRENT_D_NAMLEN 23398121Sgshapiro && entry->d_namlen >= filename_len 23498121Sgshapiro#else 23598121Sgshapiro && strlen(entry->d_name) >= filename_len 23698121Sgshapiro#endif 23798121Sgshapiro && strncmp(entry->d_name, filename, 23898121Sgshapiro filename_len) == 0) 23998121Sgshapiro break; 24098121Sgshapiro } 24198121Sgshapiro 24298121Sgshapiro if (entry) { /* match found */ 24398121Sgshapiro 24498121Sgshapiro#if HAVE_STRUCT_DIRENT_D_NAMLEN 24598121Sgshapiro len = entry->d_namlen; 24698121Sgshapiro#else 24798121Sgshapiro len = strlen(entry->d_name); 24898121Sgshapiro#endif 24998121Sgshapiro 250141858Sgshapiro len = strlen(dirname) + len + 1; 251141858Sgshapiro temp = el_malloc(len * sizeof(*temp)); 252141858Sgshapiro if (temp == NULL) 25398121Sgshapiro return NULL; 25498121Sgshapiro (void)snprintf(temp, len, "%s%s", dirname, entry->d_name); 25598121Sgshapiro } else { 25698121Sgshapiro (void)closedir(dir); 25798121Sgshapiro dir = NULL; 25898121Sgshapiro temp = NULL; 25998121Sgshapiro } 26098121Sgshapiro 261141858Sgshapiro return temp; 262141858Sgshapiro} 263141858Sgshapiro 264141858Sgshapiro 265141858Sgshapirostatic const char * 26698121Sgshapiroappend_char_function(const char *name) 267168515Sgshapiro{ 26898121Sgshapiro struct stat stbuf; 26998121Sgshapiro char *expname = *name == '~' ? fn_tilde_expand(name) : NULL; 27098121Sgshapiro const char *rs = " "; 27198121Sgshapiro 27298121Sgshapiro if (stat(expname ? expname : name, &stbuf) == -1) 27398121Sgshapiro goto out; 27498121Sgshapiro if (S_ISDIR(stbuf.st_mode)) 27598841Sgshapiro rs = "/"; 27698841Sgshapiroout: 27798121Sgshapiro if (expname) 27898841Sgshapiro el_free(expname); 27998121Sgshapiro return rs; 28098121Sgshapiro} 281168515Sgshapiro/* 28298121Sgshapiro * returns list of completions for text given 28398121Sgshapiro * non-static for readline. 28498121Sgshapiro */ 28598121Sgshapirochar ** completion_matches(const char *, char *(*)(const char *, int)); 28698121Sgshapirochar ** 28798121Sgshapirocompletion_matches(const char *text, char *(*genfunc)(const char *, int)) 28898121Sgshapiro{ 28998121Sgshapiro char **match_list = NULL, *retstr, *prevstr; 29098121Sgshapiro size_t match_list_len, max_equal, which, i; 29198121Sgshapiro size_t matches; 29298121Sgshapiro 29390792Sgshapiro matches = 0; 294 match_list_len = 1; 295 while ((retstr = (*genfunc) (text, (int)matches)) != NULL) { 296 /* allow for list terminator here */ 297 if (matches + 3 >= match_list_len) { 298 char **nmatch_list; 299 while (matches + 3 >= match_list_len) 300 match_list_len <<= 1; 301 nmatch_list = el_realloc(match_list, 302 match_list_len * sizeof(*nmatch_list)); 303 if (nmatch_list == NULL) { 304 el_free(match_list); 305 return NULL; 306 } 307 match_list = nmatch_list; 308 309 } 310 match_list[++matches] = retstr; 311 } 312 313 if (!match_list) 314 return NULL; /* nothing found */ 315 316 /* find least denominator and insert it to match_list[0] */ 317 which = 2; 318 prevstr = match_list[1]; 319 max_equal = strlen(prevstr); 320 for (; which <= matches; which++) { 321 for (i = 0; i < max_equal && 322 prevstr[i] == match_list[which][i]; i++) 323 continue; 324 max_equal = i; 325 } 326 327 retstr = el_malloc((max_equal + 1) * sizeof(*retstr)); 328 if (retstr == NULL) { 329 el_free(match_list); 330 return NULL; 331 } 332 (void)strncpy(retstr, match_list[1], max_equal); 333 retstr[max_equal] = '\0'; 334 match_list[0] = retstr; 335 336 /* add NULL as last pointer to the array */ 337 match_list[matches + 1] = NULL; 338 339 return match_list; 340} 341 342/* 343 * Sort function for qsort(). Just wrapper around strcasecmp(). 344 */ 345static int 346_fn_qsort_string_compare(const void *i1, const void *i2) 347{ 348 const char *s1 = ((const char * const *)i1)[0]; 349 const char *s2 = ((const char * const *)i2)[0]; 350 351 return strcasecmp(s1, s2); 352} 353 354/* 355 * Display list of strings in columnar format on readline's output stream. 356 * 'matches' is list of strings, 'num' is number of strings in 'matches', 357 * 'width' is maximum length of string in 'matches'. 358 * 359 * matches[0] is not one of the match strings, but it is counted in 360 * num, so the strings are matches[1] *through* matches[num-1]. 361 */ 362void 363fn_display_match_list (EditLine *el, char **matches, size_t num, size_t width) 364{ 365 size_t line, lines, col, cols, thisguy; 366 int screenwidth = el->el_terminal.t_size.h; 367 368 /* Ignore matches[0]. Avoid 1-based array logic below. */ 369 matches++; 370 num--; 371 372 /* 373 * Find out how many entries can be put on one line; count 374 * with one space between strings the same way it's printed. 375 */ 376 cols = (size_t)screenwidth / (width + 1); 377 if (cols == 0) 378 cols = 1; 379 380 /* how many lines of output, rounded up */ 381 lines = (num + cols - 1) / cols; 382 383 /* Sort the items. */ 384 qsort(matches, num, sizeof(char *), _fn_qsort_string_compare); 385 386 /* 387 * On the ith line print elements i, i+lines, i+lines*2, etc. 388 */ 389 for (line = 0; line < lines; line++) { 390 for (col = 0; col < cols; col++) { 391 thisguy = line + col * lines; 392 if (thisguy >= num) 393 break; 394 (void)fprintf(el->el_outfile, "%s%-*s", 395 col == 0 ? "" : " ", (int)width, matches[thisguy]); 396 } 397 (void)fprintf(el->el_outfile, "\n"); 398 } 399} 400 401/* 402 * Complete the word at or before point, 403 * 'what_to_do' says what to do with the completion. 404 * \t means do standard completion. 405 * `?' means list the possible completions. 406 * `*' means insert all of the possible completions. 407 * `!' means to do standard completion, and list all possible completions if 408 * there is more than one. 409 * 410 * Note: '*' support is not implemented 411 * '!' could never be invoked 412 */ 413int 414fn_complete(EditLine *el, 415 char *(*complet_func)(const char *, int), 416 char **(*attempted_completion_function)(const char *, int, int), 417 const Char *word_break, const Char *special_prefixes, 418 const char *(*app_func)(const char *), size_t query_items, 419 int *completion_type, int *over, int *point, int *end, 420 const Char *(*find_word_start_func)(const Char *, const Char *), 421 Char *(*dequoting_func)(const Char *), 422 char *(*quoting_func)(const char *)) 423{ 424 const TYPE(LineInfo) *li; 425 Char *temp; 426 Char *dequoted_temp; 427 char **matches; 428 const Char *ctemp; 429 size_t len; 430 int what_to_do = '\t'; 431 int retval = CC_NORM; 432 433 if (el->el_state.lastcmd == el->el_state.thiscmd) 434 what_to_do = '?'; 435 436 /* readline's rl_complete() has to be told what we did... */ 437 if (completion_type != NULL) 438 *completion_type = what_to_do; 439 440 if (!complet_func) 441 complet_func = fn_filename_completion_function; 442 if (!app_func) 443 app_func = append_char_function; 444 445 /* We now look backwards for the start of a filename/variable word */ 446 li = FUN(el,line)(el); 447 if (find_word_start_func) 448 ctemp = find_word_start_func(li->buffer, li->cursor); 449 else { 450 ctemp = li->cursor; 451 while (ctemp > li->buffer 452 && !Strchr(word_break, ctemp[-1]) 453 && (!special_prefixes || !Strchr(special_prefixes, ctemp[-1]) ) ) 454 ctemp--; 455 } 456 457 len = (size_t)(li->cursor - ctemp); 458 temp = el_malloc((len + 1) * sizeof(*temp)); 459 (void)Strncpy(temp, ctemp, len); 460 temp[len] = '\0'; 461 462 if (dequoting_func) { 463 dequoted_temp = dequoting_func(temp); 464 if (dequoted_temp == NULL) 465 return retval; 466 } else 467 dequoted_temp = NULL; 468 469 /* these can be used by function called in completion_matches() */ 470 /* or (*attempted_completion_function)() */ 471 if (point != 0) 472 *point = (int)(li->cursor - li->buffer); 473 if (end != NULL) 474 *end = (int)(li->lastchar - li->buffer); 475 476 if (attempted_completion_function) { 477 int cur_off = (int)(li->cursor - li->buffer); 478 matches = (*attempted_completion_function)( 479 ct_encode_string(dequoted_temp ? dequoted_temp : temp, 480 &el->el_scratch), 481 cur_off - (int)len, cur_off); 482 } else 483 matches = 0; 484 if (!attempted_completion_function || 485 (over != NULL && !*over && !matches)) 486 matches = completion_matches( 487 ct_encode_string(dequoted_temp ? dequoted_temp : temp, 488 &el->el_scratch), complet_func); 489 490 if (over != NULL) 491 *over = 0; 492 493 if (matches) { 494 int i; 495 size_t matches_num, maxlen, match_len, match_display=1; 496 497 retval = CC_REFRESH; 498 /* 499 * Only replace the completed string with common part of 500 * possible matches if there is possible completion. 501 */ 502 if (matches[0][0] != '\0') { 503 char *quoted_match; 504 if (quoting_func) { 505 quoted_match = quoting_func(matches[0]); 506 if (quoted_match == NULL) 507 goto free_matches; 508 } else 509 quoted_match = NULL; 510 el_deletestr(el, (int) len); 511 FUN(el,insertstr)(el, 512 ct_decode_string(quoted_match ? quoted_match : 513 matches[0] , &el->el_scratch)); 514 } 515 516 if (what_to_do == '?') 517 goto display_matches; 518 519 if (matches[2] == NULL && 520 (matches[1] == NULL || strcmp(matches[0], matches[1]) == 0)) { 521 /* 522 * We found exact match. Add a space after 523 * it, unless we do filename completion and the 524 * object is a directory. 525 */ 526 FUN(el,insertstr)(el, 527 ct_decode_string((*app_func)(matches[0]), 528 &el->el_scratch)); 529 } else if (what_to_do == '!') { 530 display_matches: 531 /* 532 * More than one match and requested to list possible 533 * matches. 534 */ 535 536 for(i = 1, maxlen = 0; matches[i]; i++) { 537 match_len = strlen(matches[i]); 538 if (match_len > maxlen) 539 maxlen = match_len; 540 } 541 /* matches[1] through matches[i-1] are available */ 542 matches_num = (size_t)(i - 1); 543 544 /* newline to get on next line from command line */ 545 (void)fprintf(el->el_outfile, "\n"); 546 547 /* 548 * If there are too many items, ask user for display 549 * confirmation. 550 */ 551 if (matches_num > query_items) { 552 (void)fprintf(el->el_outfile, 553 "Display all %zu possibilities? (y or n) ", 554 matches_num); 555 (void)fflush(el->el_outfile); 556 if (getc(stdin) != 'y') 557 match_display = 0; 558 (void)fprintf(el->el_outfile, "\n"); 559 } 560 561 if (match_display) { 562 /* 563 * Interface of this function requires the 564 * strings be matches[1..num-1] for compat. 565 * We have matches_num strings not counting 566 * the prefix in matches[0], so we need to 567 * add 1 to matches_num for the call. 568 */ 569 fn_display_match_list(el, matches, 570 matches_num+1, maxlen); 571 } 572 retval = CC_REDISPLAY; 573 } else if (matches[0][0]) { 574 /* 575 * There was some common match, but the name was 576 * not complete enough. Next tab will print possible 577 * completions. 578 */ 579 el_beep(el); 580 } else { 581 /* lcd is not a valid object - further specification */ 582 /* is needed */ 583 el_beep(el); 584 retval = CC_NORM; 585 } 586 587free_matches: 588 /* free elements of array and the array itself */ 589 for (i = 0; matches[i]; i++) 590 el_free(matches[i]); 591 el_free(matches); 592 matches = NULL; 593 } 594 free(dequoted_temp); 595 el_free(temp); 596 return retval; 597} 598 599/* 600 * el-compatible wrapper around rl_complete; needed for key binding 601 */ 602/* ARGSUSED */ 603unsigned char 604_el_fn_complete(EditLine *el, int ch __attribute__((__unused__))) 605{ 606 return (unsigned char)fn_complete(el, NULL, NULL, 607 break_chars, NULL, NULL, (size_t)100, 608 NULL, NULL, NULL, NULL, 609 NULL, NULL, NULL); 610} 611 612static const Char * 613sh_find_word_start(const Char *buffer, const Char *cursor) 614{ 615 const Char *word_start = buffer; 616 617 while (buffer < cursor) { 618 if (*buffer == '\\') 619 buffer++; 620 else if (Strchr(break_chars, *buffer)) 621 word_start = buffer + 1; 622 buffer++; 623 } 624 return word_start; 625} 626 627static char * 628sh_quote(const char *str) 629{ 630 const char *src; 631 int extra_len = 0; 632 char *quoted_str, *dst; 633 634 for (src = str; *src != '\0'; src++) 635 if (Strchr(break_chars, *src) || 636 Strchr(extra_quote_chars, *src)) 637 extra_len++; 638 639 quoted_str = malloc(sizeof(*quoted_str) * 640 (strlen(str) + extra_len + 1)); 641 if (quoted_str == NULL) 642 return NULL; 643 644 dst = quoted_str; 645 for (src = str; *src != '\0'; src++) { 646 if (Strchr(break_chars, *src) || 647 Strchr(extra_quote_chars, *src)) 648 *dst++ = '\\'; 649 *dst++ = *src; 650 } 651 *dst = '\0'; 652 653 return quoted_str; 654} 655 656static Char * 657sh_dequote(const Char *str) 658{ 659 Char *dequoted_str, *dst; 660 661 /* save extra space to replace \~ with ./~ */ 662 dequoted_str = malloc(sizeof(*dequoted_str) * (Strlen(str) + 1 + 1)); 663 if (dequoted_str == NULL) 664 return NULL; 665 666 dst = dequoted_str; 667 668 /* dequote \~ at start as ./~ */ 669 if (*str == '\\' && str[1] == '~') { 670 str++; 671 *dst++ = '.'; 672 *dst++ = '/'; 673 } 674 675 while (*str) { 676 if (*str == '\\') 677 str++; 678 if (*str) 679 *dst++ = *str++; 680 } 681 *dst = '\0'; 682 683 return dequoted_str; 684} 685 686/* 687 * completion function using sh quoting rules; for key binding 688 */ 689/* ARGSUSED */ 690unsigned char 691_el_fn_sh_complete(EditLine *el, int ch __attribute__((__unused__))) 692{ 693 return (unsigned char)fn_complete(el, NULL, NULL, 694 break_chars, NULL, NULL, 100, 695 NULL, NULL, NULL, NULL, 696 sh_find_word_start, sh_dequote, sh_quote); 697} 698