Jari Aalto | bb70624 | 2000-03-17 21:46:59 +0000 | [diff] [blame^] | 1 | /* pcomplete.c - functions to generate lists of matches for programmable |
| 2 | completion. */ |
| 3 | |
| 4 | /* Copyright (C) 1999 Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GNU Bash, the Bourne Again SHell. |
| 7 | |
| 8 | Bash is free software; you can redistribute it and/or modify it under |
| 9 | the terms of the GNU General Public License as published by the Free |
| 10 | Software Foundation; either version 2, or (at your option) any later |
| 11 | version. |
| 12 | |
| 13 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY |
| 14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 16 | for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License along |
| 19 | with Bash; see the file COPYING. If not, write to the Free Software |
| 20 | Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
| 21 | |
| 22 | #include <config.h> |
| 23 | |
| 24 | #if defined (PROGRAMMABLE_COMPLETION) |
| 25 | |
| 26 | #include "bashtypes.h" |
| 27 | #include "posixstat.h" |
| 28 | |
| 29 | #if defined (HAVE_UNISTD_H) |
| 30 | # include <unistd.h> |
| 31 | #endif |
| 32 | |
| 33 | #include <signal.h> |
| 34 | |
| 35 | #if defined (PREFER_STDARG) |
| 36 | # include <stdarg.h> |
| 37 | #else |
| 38 | # if defined (PREFER_VARARGS) |
| 39 | # include <varargs.h> |
| 40 | # endif |
| 41 | #endif |
| 42 | |
| 43 | #include <stdio.h> |
| 44 | #include "bashansi.h" |
| 45 | |
| 46 | #include "shell.h" |
| 47 | #include "pcomplete.h" |
| 48 | #include "alias.h" |
| 49 | #include "bashline.h" |
| 50 | #include "pathexp.h" |
| 51 | |
| 52 | #if defined (JOB_CONTROL) |
| 53 | # include "jobs.h" |
| 54 | #endif |
| 55 | |
| 56 | #if !defined (NSIG) |
| 57 | # include "trap.h" |
| 58 | #endif |
| 59 | |
| 60 | #include "builtins.h" |
| 61 | #include "builtins/common.h" |
| 62 | |
| 63 | #include <glob/glob.h> |
| 64 | #include <glob/fnmatch.h> |
| 65 | |
| 66 | #include <readline/rlconf.h> |
| 67 | #include <readline/readline.h> |
| 68 | #include <readline/history.h> |
| 69 | |
| 70 | #ifdef STRDUP |
| 71 | # undef STRDUP |
| 72 | #endif |
| 73 | #define STRDUP(x) ((x) ? savestring (x) : (char *)NULL) |
| 74 | |
| 75 | typedef SHELL_VAR **SVFUNC (); |
| 76 | |
| 77 | #ifndef HAVE_STRPBRK |
| 78 | extern char *strpbrk __P((char *, char *)); |
| 79 | #endif |
| 80 | |
| 81 | extern int rl_filename_completion_desired; |
| 82 | extern int array_needs_making; |
| 83 | extern STRING_INT_ALIST word_token_alist[]; |
| 84 | extern char *signal_names[]; |
| 85 | |
| 86 | static int it_init_aliases (); |
| 87 | static int it_init_arrayvars (); |
| 88 | static int it_init_bindings (); |
| 89 | static int it_init_builtins (); |
| 90 | static int it_init_disabled (); |
| 91 | static int it_init_enabled (); |
| 92 | static int it_init_exported (); |
| 93 | static int it_init_functions (); |
| 94 | static int it_init_hostnames (); |
| 95 | static int it_init_jobs (); |
| 96 | static int it_init_running (); |
| 97 | static int it_init_stopped (); |
| 98 | static int it_init_keywords (); |
| 99 | static int it_init_signals (); |
| 100 | static int it_init_variables (); |
| 101 | static int it_init_setopts (); |
| 102 | static int it_init_shopts (); |
| 103 | |
| 104 | static int progcomp_debug = 0; |
| 105 | |
| 106 | int prog_completion_enabled = 1; |
| 107 | |
| 108 | /* These are used to manage the arrays of strings for possible completions. */ |
| 109 | ITEMLIST it_aliases = { 0, it_init_aliases, (STRINGLIST *)0 }; |
| 110 | ITEMLIST it_arrayvars = { LIST_DYNAMIC, it_init_arrayvars, (STRINGLIST *)0 }; |
| 111 | ITEMLIST it_bindings = { 0, it_init_bindings, (STRINGLIST *)0 }; |
| 112 | ITEMLIST it_builtins = { 0, it_init_builtins, (STRINGLIST *)0 }; |
| 113 | ITEMLIST it_commands = { LIST_DYNAMIC }; /* unused */ |
| 114 | ITEMLIST it_directories = { LIST_DYNAMIC }; /* unused */ |
| 115 | ITEMLIST it_disabled = { 0, it_init_disabled, (STRINGLIST *)0 }; |
| 116 | ITEMLIST it_enabled = { 0, it_init_enabled, (STRINGLIST *)0 }; |
| 117 | ITEMLIST it_exports = { LIST_DYNAMIC, it_init_exported, (STRINGLIST *)0 }; |
| 118 | ITEMLIST it_files = { LIST_DYNAMIC }; /* unused */ |
| 119 | ITEMLIST it_functions = { 0, it_init_functions, (STRINGLIST *)0 }; |
| 120 | ITEMLIST it_hostnames = { LIST_DYNAMIC, it_init_hostnames, (STRINGLIST *)0 }; |
| 121 | ITEMLIST it_jobs = { LIST_DYNAMIC, it_init_jobs, (STRINGLIST *)0 };; |
| 122 | ITEMLIST it_keywords = { 0, it_init_keywords, (STRINGLIST *)0 }; |
| 123 | ITEMLIST it_running = { LIST_DYNAMIC, it_init_running, (STRINGLIST *)0 }; |
| 124 | ITEMLIST it_setopts = { 0, it_init_setopts, (STRINGLIST *)0 }; |
| 125 | ITEMLIST it_shopts = { 0, it_init_shopts, (STRINGLIST *)0 }; |
| 126 | ITEMLIST it_signals = { 0, it_init_signals, (STRINGLIST *)0 }; |
| 127 | ITEMLIST it_stopped = { LIST_DYNAMIC, it_init_stopped, (STRINGLIST *)0 }; |
| 128 | ITEMLIST it_users = { LIST_DYNAMIC }; /* unused */ |
| 129 | ITEMLIST it_variables = { LIST_DYNAMIC, it_init_variables, (STRINGLIST *)0 }; |
| 130 | |
| 131 | /* Debugging code */ |
| 132 | #if !defined (USE_VARARGS) |
| 133 | static void |
| 134 | debug_printf (format, arg1, arg2, arg3, arg4, arg5) |
| 135 | char *format; |
| 136 | { |
| 137 | if (progcomp_debug == 0) |
| 138 | return; |
| 139 | |
| 140 | fprintf (stdout, format, arg1, arg2, arg3, arg4, arg5); |
| 141 | fprintf (stdout, "\n"); |
| 142 | rl_on_new_line (); |
| 143 | } |
| 144 | #else |
| 145 | static void |
| 146 | #if defined (PREFER_STDARG) |
| 147 | debug_printf (const char *format, ...) |
| 148 | #else |
| 149 | debug_printf (format, va_alist) |
| 150 | const char *format; |
| 151 | va_dcl |
| 152 | #endif |
| 153 | { |
| 154 | va_list args; |
| 155 | |
| 156 | if (progcomp_debug == 0) |
| 157 | return; |
| 158 | |
| 159 | #if defined (PREFER_STDARG) |
| 160 | va_start (args, format); |
| 161 | #else |
| 162 | va_start (args); |
| 163 | #endif |
| 164 | |
| 165 | fprintf (stdout, "DEBUG: "); |
| 166 | vfprintf (stdout, format, args); |
| 167 | fprintf (stdout, "\n"); |
| 168 | |
| 169 | rl_on_new_line (); |
| 170 | |
| 171 | va_end (args); |
| 172 | } |
| 173 | #endif /* USE_VARARGS */ |
| 174 | |
| 175 | /* Functions to manage the item lists */ |
| 176 | |
| 177 | void |
| 178 | set_itemlist_dirty (it) |
| 179 | ITEMLIST *it; |
| 180 | { |
| 181 | it->flags |= LIST_DIRTY; |
| 182 | } |
| 183 | |
| 184 | void |
| 185 | initialize_itemlist (itp) |
| 186 | ITEMLIST *itp; |
| 187 | { |
| 188 | (*itp->list_getter) (itp); |
| 189 | itp->flags |= LIST_INITIALIZED; |
| 190 | itp->flags &= ~LIST_DIRTY; |
| 191 | } |
| 192 | |
| 193 | void |
| 194 | clean_itemlist (itp) |
| 195 | ITEMLIST *itp; |
| 196 | { |
| 197 | STRINGLIST *sl; |
| 198 | |
| 199 | sl = itp->slist; |
| 200 | if (sl) |
| 201 | { |
| 202 | if ((itp->flags & (LIST_DONTFREEMEMBERS|LIST_DONTFREE)) == 0) |
| 203 | free_array_members (sl->list); |
| 204 | if ((itp->flags & LIST_DONTFREE) == 0) |
| 205 | free (sl->list); |
| 206 | free (sl); |
| 207 | } |
| 208 | itp->slist = (STRINGLIST *)NULL; |
| 209 | itp->flags &= ~(LIST_DONTFREE|LIST_DONTFREEMEMBERS|LIST_INITIALIZED|LIST_DIRTY); |
| 210 | } |
| 211 | |
| 212 | /* Functions to manage the string lists -- lists of matches. These should |
| 213 | really be moved to a separate file. */ |
| 214 | |
| 215 | /* Allocate a new STRINGLIST, with room for N strings. */ |
| 216 | STRINGLIST * |
| 217 | alloc_stringlist (n) |
| 218 | int n; |
| 219 | { |
| 220 | STRINGLIST *ret; |
| 221 | register int i; |
| 222 | |
| 223 | ret = (STRINGLIST *)xmalloc (sizeof (STRINGLIST)); |
| 224 | if (n) |
| 225 | { |
| 226 | ret->list = alloc_array (n+1); |
| 227 | ret->list_size = n; |
| 228 | for (i = 0; i < n; i++) |
| 229 | ret->list[i] = (char *)NULL; |
| 230 | } |
| 231 | else |
| 232 | { |
| 233 | ret->list = (char **)NULL; |
| 234 | ret->list_size = 0; |
| 235 | } |
| 236 | ret->list_len = 0; |
| 237 | return ret; |
| 238 | } |
| 239 | |
| 240 | STRINGLIST * |
| 241 | realloc_stringlist (sl, n) |
| 242 | STRINGLIST *sl; |
| 243 | int n; |
| 244 | { |
| 245 | register int i; |
| 246 | |
| 247 | if (n > sl->list_size) |
| 248 | { |
| 249 | sl->list = (char **)xrealloc (sl->list, (n+1) * sizeof (char *)); |
| 250 | for (i = sl->list_size; i <= n; i++) |
| 251 | sl->list[i] = (char *)NULL; |
| 252 | sl->list_size = n; |
| 253 | } |
| 254 | return sl; |
| 255 | } |
| 256 | |
| 257 | void |
| 258 | free_stringlist (sl) |
| 259 | STRINGLIST *sl; |
| 260 | { |
| 261 | if (sl == 0) |
| 262 | return; |
| 263 | if (sl->list) |
| 264 | free_array (sl->list); |
| 265 | free (sl); |
| 266 | } |
| 267 | |
| 268 | STRINGLIST * |
| 269 | copy_stringlist (sl) |
| 270 | STRINGLIST *sl; |
| 271 | { |
| 272 | STRINGLIST *new; |
| 273 | register int i; |
| 274 | |
| 275 | new = alloc_stringlist (sl->list_size); |
| 276 | /* I'd like to use copy_array, but that doesn't copy everything. */ |
| 277 | if (sl->list) |
| 278 | { |
| 279 | for (i = 0; i < sl->list_size; i++) |
| 280 | new->list[i] = STRDUP (sl->list[i]); |
| 281 | } |
| 282 | new->list_size = sl->list_size; |
| 283 | new->list_len = sl->list_len; |
| 284 | /* just being careful */ |
| 285 | if (new->list) |
| 286 | new->list[new->list_len] = (char *)NULL; |
| 287 | return new; |
| 288 | } |
| 289 | |
| 290 | /* Return a new STRINGLIST with everything from M1 and M2. */ |
| 291 | |
| 292 | STRINGLIST * |
| 293 | merge_stringlists (m1, m2) |
| 294 | STRINGLIST *m1, *m2; |
| 295 | { |
| 296 | STRINGLIST *sl; |
| 297 | int i, n, l1, l2; |
| 298 | |
| 299 | l1 = m1 ? m1->list_len : 0; |
| 300 | l2 = m2 ? m2->list_len : 0; |
| 301 | |
| 302 | sl = alloc_stringlist (l1 + l2 + 1); |
| 303 | for (i = n = 0; i < l1; i++, n++) |
| 304 | sl->list[n] = STRDUP (m1->list[i]); |
| 305 | for (i = 0; i < l2; i++, n++) |
| 306 | sl->list[n] = STRDUP (m2->list[i]); |
| 307 | sl->list_len = n; |
| 308 | sl->list[n] = (char *)NULL; |
| 309 | } |
| 310 | |
| 311 | /* Make STRINGLIST M1 contain everything in M1 and M2. */ |
| 312 | STRINGLIST * |
| 313 | append_stringlist (m1, m2) |
| 314 | STRINGLIST *m1, *m2; |
| 315 | { |
| 316 | register int i, n, len1, len2; |
| 317 | |
| 318 | if (m1 == 0) |
| 319 | { |
| 320 | m1 = copy_stringlist (m2); |
| 321 | return m1; |
| 322 | } |
| 323 | |
| 324 | len1 = m1->list_len; |
| 325 | len2 = m2 ? m2->list_len : 0; |
| 326 | |
| 327 | if (len2) |
| 328 | { |
| 329 | m1 = realloc_stringlist (m1, len1 + len2 + 1); |
| 330 | for (i = 0, n = len1; i < len2; i++, n++) |
| 331 | m1->list[n] = STRDUP (m2->list[i]); |
| 332 | m1->list[n] = (char *)NULL; |
| 333 | m1->list_len = n; |
| 334 | } |
| 335 | |
| 336 | return m1; |
| 337 | } |
| 338 | |
| 339 | static int |
| 340 | shouldexp_filterpat (s) |
| 341 | char *s; |
| 342 | { |
| 343 | register char *p; |
| 344 | |
| 345 | for (p = s; p && *p; p++) |
| 346 | { |
| 347 | if (*p == '\\') |
| 348 | p++; |
| 349 | else if (*p == '&') |
| 350 | return 1; |
| 351 | } |
| 352 | return 0; |
| 353 | } |
| 354 | |
| 355 | /* Replace any instance of `&' in PAT with TEXT. Backslash may be used to |
| 356 | quote a `&' and inhibit substitution. Returns a new string. This just |
| 357 | calls stringlib.c:strcreplace(). */ |
| 358 | static char * |
| 359 | preproc_filterpat (pat, text) |
| 360 | char *pat; |
| 361 | char *text; |
| 362 | { |
| 363 | char *ret; |
| 364 | |
| 365 | ret = strcreplace (pat, '&', text, 1); |
| 366 | return ret; |
| 367 | } |
| 368 | |
| 369 | /* Remove any match of FILTERPAT from SL. A `&' in FILTERPAT is replaced by |
| 370 | TEXT. A leading `!' in FILTERPAT negates the pattern; in this case |
| 371 | any member of SL->list that does *not* match will be removed. This returns |
| 372 | a new STRINGLIST with the matching members of SL *copied*. Any |
| 373 | non-matching members of SL->list are *freed*. */ |
| 374 | STRINGLIST * |
| 375 | filter_stringlist (sl, filterpat, text) |
| 376 | STRINGLIST *sl; |
| 377 | char *filterpat, *text; |
| 378 | { |
| 379 | int i, m, not; |
| 380 | STRINGLIST *ret; |
| 381 | char *npat, *t; |
| 382 | |
| 383 | if (sl == 0 || sl->list == 0 || sl->list_len == 0) |
| 384 | return sl; |
| 385 | |
| 386 | npat = shouldexp_filterpat (filterpat) ? preproc_filterpat (filterpat, text) : filterpat; |
| 387 | |
| 388 | not = (npat[0] == '!'); |
| 389 | t = not ? npat + 1 : npat; |
| 390 | |
| 391 | ret = alloc_stringlist (sl->list_size); |
| 392 | for (i = 0; i < sl->list_len; i++) |
| 393 | { |
| 394 | m = fnmatch (t, sl->list[i], FNMATCH_EXTFLAG); |
| 395 | if ((not && m == FNM_NOMATCH) || (not == 0 && m != FNM_NOMATCH)) |
| 396 | free (sl->list[i]); |
| 397 | else |
| 398 | ret->list[ret->list_len++] = sl->list[i]; |
| 399 | } |
| 400 | |
| 401 | ret->list[ret->list_len] = (char *)NULL; |
| 402 | if (npat != filterpat) |
| 403 | free (npat); |
| 404 | |
| 405 | return ret; |
| 406 | } |
| 407 | |
| 408 | STRINGLIST * |
| 409 | prefix_suffix_stringlist (sl, prefix, suffix) |
| 410 | STRINGLIST *sl; |
| 411 | char *prefix, *suffix; |
| 412 | { |
| 413 | int plen, slen, tlen, llen, i; |
| 414 | char *t; |
| 415 | |
| 416 | if (sl == 0 || sl->list == 0 || sl->list_len == 0) |
| 417 | return sl; |
| 418 | |
| 419 | plen = STRLEN (prefix); |
| 420 | slen = STRLEN (suffix); |
| 421 | |
| 422 | if (plen == 0 && slen == 0) |
| 423 | return (sl); |
| 424 | |
| 425 | for (i = 0; i < sl->list_len; i++) |
| 426 | { |
| 427 | llen = STRLEN (sl->list[i]); |
| 428 | tlen = plen + llen + slen + 1; |
| 429 | t = xmalloc (tlen + 1); |
| 430 | if (plen) |
| 431 | strcpy (t, prefix); |
| 432 | strcpy (t + plen, sl->list[i]); |
| 433 | if (slen) |
| 434 | strcpy (t + plen + llen, suffix); |
| 435 | free (sl->list[i]); |
| 436 | sl->list[i] = t; |
| 437 | } |
| 438 | |
| 439 | return (sl); |
| 440 | } |
| 441 | |
| 442 | void |
| 443 | print_stringlist (sl, prefix) |
| 444 | STRINGLIST *sl; |
| 445 | char *prefix; |
| 446 | { |
| 447 | register int i; |
| 448 | |
| 449 | if (sl == 0) |
| 450 | return; |
| 451 | for (i = 0; i < sl->list_len; i++) |
| 452 | printf ("%s%s\n", prefix ? prefix : "", sl->list[i]); |
| 453 | } |
| 454 | |
| 455 | /* Turn an array of strings returned by completion_matches into a STRINGLIST. |
| 456 | This understands how completion_matches sets matches[0] (the lcd of the |
| 457 | strings in the list, unless it's the only match). */ |
| 458 | STRINGLIST * |
| 459 | completions_to_stringlist (matches) |
| 460 | char **matches; |
| 461 | { |
| 462 | STRINGLIST *sl; |
| 463 | int mlen, i, n; |
| 464 | |
| 465 | mlen = (matches == 0) ? 0 : array_len (matches); |
| 466 | sl = alloc_stringlist (mlen + 1); |
| 467 | |
| 468 | if (matches == 0 || matches[0] == 0) |
| 469 | return sl; |
| 470 | |
| 471 | if (matches[1] == 0) |
| 472 | { |
| 473 | sl->list[0] = STRDUP (matches[0]); |
| 474 | sl->list[sl->list_len = 1] = (char *)NULL; |
| 475 | return sl; |
| 476 | } |
| 477 | |
| 478 | for (i = 1, n = 0; i < mlen; i++, n++) |
| 479 | sl->list[n] = STRDUP (matches[i]); |
| 480 | sl->list_len = n; |
| 481 | sl->list[n] = (char *)NULL; |
| 482 | |
| 483 | return sl; |
| 484 | } |
| 485 | |
| 486 | /* Functions to manage the various ITEMLISTs that we populate internally. |
| 487 | The caller is responsible for setting ITP->flags correctly. */ |
| 488 | |
| 489 | static int |
| 490 | it_init_aliases (itp) |
| 491 | ITEMLIST *itp; |
| 492 | { |
| 493 | #ifdef ALIAS |
| 494 | alias_t **aliases; |
| 495 | register int i, n; |
| 496 | STRINGLIST *sl; |
| 497 | |
| 498 | aliases = all_aliases (); |
| 499 | if (aliases == 0) |
| 500 | { |
| 501 | itp->slist = (STRINGLIST *)NULL; |
| 502 | return 0; |
| 503 | } |
| 504 | for (n = 0; aliases[n]; n++) |
| 505 | ; |
| 506 | sl = alloc_stringlist (n+1); |
| 507 | for (i = 0; i < n; i++) |
| 508 | sl->list[i] = STRDUP (aliases[i]->name); |
| 509 | sl->list[n] = (char *)NULL; |
| 510 | sl->list_size = sl->list_len = n; |
| 511 | itp->slist = sl; |
| 512 | #else |
| 513 | itp->slist = (STRINGLIST *)NULL; |
| 514 | #endif |
| 515 | return 1; |
| 516 | } |
| 517 | |
| 518 | static void |
| 519 | init_itemlist_from_varlist (itp, svfunc) |
| 520 | ITEMLIST *itp; |
| 521 | SVFUNC *svfunc; |
| 522 | { |
| 523 | SHELL_VAR **vlist; |
| 524 | STRINGLIST *sl; |
| 525 | register int i, n; |
| 526 | |
| 527 | vlist = (*svfunc) (); |
| 528 | for (n = 0; vlist[n]; n++) |
| 529 | ; |
| 530 | sl = alloc_stringlist (n+1); |
| 531 | for (i = 0; i < n; i++) |
| 532 | sl->list[i] = savestring (vlist[i]->name); |
| 533 | sl->list[sl->list_len = n] = (char *)NULL; |
| 534 | itp->slist = sl; |
| 535 | } |
| 536 | |
| 537 | static int |
| 538 | it_init_arrayvars (itp) |
| 539 | ITEMLIST *itp; |
| 540 | { |
| 541 | #if defined (ARRAY_VARS) |
| 542 | init_itemlist_from_varlist (itp, all_array_variables); |
| 543 | return 1; |
| 544 | #else |
| 545 | return 0; |
| 546 | #endif |
| 547 | } |
| 548 | |
| 549 | static int |
| 550 | it_init_bindings (itp) |
| 551 | ITEMLIST *itp; |
| 552 | { |
| 553 | char **blist; |
| 554 | STRINGLIST *sl; |
| 555 | |
| 556 | /* rl_funmap_names allocates blist, but not its members */ |
| 557 | blist = rl_funmap_names (); |
| 558 | sl = alloc_stringlist (0); |
| 559 | sl->list = blist; |
| 560 | sl->list_size = 0; |
| 561 | sl->list_len = array_len (sl->list); |
| 562 | itp->flags |= LIST_DONTFREEMEMBERS; |
| 563 | itp->slist = sl; |
| 564 | |
| 565 | return 0; |
| 566 | } |
| 567 | |
| 568 | static int |
| 569 | it_init_builtins (itp) |
| 570 | ITEMLIST *itp; |
| 571 | { |
| 572 | STRINGLIST *sl; |
| 573 | char **list; |
| 574 | register int i, n; |
| 575 | |
| 576 | sl = alloc_stringlist (num_shell_builtins); |
| 577 | for (i = n = 0; i < num_shell_builtins; i++) |
| 578 | if (shell_builtins[i].function) |
| 579 | sl->list[n++] = shell_builtins[i].name; |
| 580 | sl->list[sl->list_len = n] = (char *)NULL; |
| 581 | itp->flags |= LIST_DONTFREEMEMBERS; |
| 582 | itp->slist = sl; |
| 583 | return 0; |
| 584 | } |
| 585 | |
| 586 | static int |
| 587 | it_init_enabled (itp) |
| 588 | ITEMLIST *itp; |
| 589 | { |
| 590 | STRINGLIST *sl; |
| 591 | char **list; |
| 592 | register int i, n; |
| 593 | |
| 594 | sl = alloc_stringlist (num_shell_builtins); |
| 595 | for (i = n = 0; i < num_shell_builtins; i++) |
| 596 | { |
| 597 | if (shell_builtins[i].function && (shell_builtins[i].flags & BUILTIN_ENABLED)) |
| 598 | sl->list[n++] = shell_builtins[i].name; |
| 599 | } |
| 600 | sl->list[sl->list_len = n] = (char *)NULL; |
| 601 | itp->flags |= LIST_DONTFREEMEMBERS; |
| 602 | itp->slist = sl; |
| 603 | return 0; |
| 604 | } |
| 605 | |
| 606 | static int |
| 607 | it_init_disabled (itp) |
| 608 | ITEMLIST *itp; |
| 609 | { |
| 610 | STRINGLIST *sl; |
| 611 | char **list; |
| 612 | register int i, n; |
| 613 | |
| 614 | sl = alloc_stringlist (num_shell_builtins); |
| 615 | for (i = n = 0; i < num_shell_builtins; i++) |
| 616 | { |
| 617 | if (shell_builtins[i].function && ((shell_builtins[i].flags & BUILTIN_ENABLED) == 0)) |
| 618 | sl->list[n++] = shell_builtins[i].name; |
| 619 | } |
| 620 | sl->list[sl->list_len = n] = (char *)NULL; |
| 621 | itp->flags |= LIST_DONTFREEMEMBERS; |
| 622 | itp->slist = sl; |
| 623 | return 0; |
| 624 | } |
| 625 | |
| 626 | static int |
| 627 | it_init_exported (itp) |
| 628 | ITEMLIST *itp; |
| 629 | { |
| 630 | init_itemlist_from_varlist (itp, all_exported_variables); |
| 631 | return 0; |
| 632 | } |
| 633 | |
| 634 | static int |
| 635 | it_init_functions (itp) |
| 636 | ITEMLIST *itp; |
| 637 | { |
| 638 | init_itemlist_from_varlist (itp, all_visible_functions); |
| 639 | return 0; |
| 640 | } |
| 641 | |
| 642 | static int |
| 643 | it_init_hostnames (itp) |
| 644 | ITEMLIST *itp; |
| 645 | { |
| 646 | STRINGLIST *sl; |
| 647 | |
| 648 | sl = alloc_stringlist (0); |
| 649 | sl->list = get_hostname_list (); |
| 650 | sl->list_len = sl->list ? array_len (sl->list) : 0; |
| 651 | sl->list_size = sl->list_len; |
| 652 | itp->slist = sl; |
| 653 | itp->flags |= LIST_DONTFREEMEMBERS|LIST_DONTFREE; |
| 654 | return 0; |
| 655 | } |
| 656 | |
| 657 | static int |
| 658 | it_init_joblist (itp, jstate) |
| 659 | ITEMLIST *itp; |
| 660 | int jstate; |
| 661 | { |
| 662 | #if defined (JOB_CONTROL) |
| 663 | STRINGLIST *sl; |
| 664 | register int i, n; |
| 665 | register PROCESS *p; |
| 666 | char *s, *t; |
| 667 | JOB_STATE js; |
| 668 | |
| 669 | if (jstate == 0) |
| 670 | js = JRUNNING; |
| 671 | else if (jstate == 1) |
| 672 | js = JSTOPPED; |
| 673 | |
| 674 | sl = alloc_stringlist (job_slots); |
| 675 | for (i = job_slots - 1; i >= 0; i--) |
| 676 | { |
| 677 | if (jobs[i] == 0) |
| 678 | continue; |
| 679 | p = jobs[i]->pipe; |
| 680 | if (jstate == -1 || JOBSTATE(i) == js) |
| 681 | { |
| 682 | s = savestring (p->command); |
| 683 | t = strpbrk (s, " \t\n"); |
| 684 | if (t) |
| 685 | *t = '\0'; |
| 686 | sl->list[sl->list_len++] = s; |
| 687 | } |
| 688 | } |
| 689 | itp->slist = sl; |
| 690 | #else |
| 691 | itp->slist = (STRINGLIST *)NULL; |
| 692 | #endif |
| 693 | return 0; |
| 694 | } |
| 695 | |
| 696 | static int |
| 697 | it_init_jobs (itp) |
| 698 | ITEMLIST *itp; |
| 699 | { |
| 700 | return (it_init_joblist (itp, -1)); |
| 701 | } |
| 702 | |
| 703 | static int |
| 704 | it_init_running (itp) |
| 705 | ITEMLIST *itp; |
| 706 | { |
| 707 | return (it_init_joblist (itp, 0)); |
| 708 | } |
| 709 | |
| 710 | static int |
| 711 | it_init_stopped (itp) |
| 712 | ITEMLIST *itp; |
| 713 | { |
| 714 | return (it_init_joblist (itp, 1)); |
| 715 | } |
| 716 | |
| 717 | static int |
| 718 | it_init_keywords (itp) |
| 719 | ITEMLIST *itp; |
| 720 | { |
| 721 | STRINGLIST *sl; |
| 722 | register int i, n; |
| 723 | |
| 724 | for (n = 0; word_token_alist[n].word; n++) |
| 725 | ; |
| 726 | sl = alloc_stringlist (n); |
| 727 | for (i = 0; i < n; i++) |
| 728 | sl->list[i] = word_token_alist[i].word; |
| 729 | sl->list[sl->list_len = i] = (char *)NULL; |
| 730 | itp->flags |= LIST_DONTFREEMEMBERS; |
| 731 | itp->slist = sl; |
| 732 | return 0; |
| 733 | } |
| 734 | |
| 735 | static int |
| 736 | it_init_signals (itp) |
| 737 | ITEMLIST *itp; |
| 738 | { |
| 739 | STRINGLIST *sl; |
| 740 | |
| 741 | sl = alloc_stringlist (0); |
| 742 | sl->list = signal_names; |
| 743 | sl->list_len = array_len (sl->list); |
| 744 | itp->flags |= LIST_DONTFREE; |
| 745 | itp->slist = sl; |
| 746 | return 0; |
| 747 | } |
| 748 | |
| 749 | static int |
| 750 | it_init_variables (itp) |
| 751 | ITEMLIST *itp; |
| 752 | { |
| 753 | init_itemlist_from_varlist (itp, all_visible_variables); |
| 754 | return 0; |
| 755 | } |
| 756 | |
| 757 | static int |
| 758 | it_init_setopts (itp) |
| 759 | ITEMLIST *itp; |
| 760 | { |
| 761 | STRINGLIST *sl; |
| 762 | |
| 763 | sl = alloc_stringlist (0); |
| 764 | sl->list = get_minus_o_opts (); |
| 765 | sl->list_len = array_len (sl->list); |
| 766 | itp->slist = sl; |
| 767 | itp->flags |= LIST_DONTFREEMEMBERS; |
| 768 | return 0; |
| 769 | } |
| 770 | |
| 771 | static int |
| 772 | it_init_shopts (itp) |
| 773 | ITEMLIST *itp; |
| 774 | { |
| 775 | STRINGLIST *sl; |
| 776 | |
| 777 | sl = alloc_stringlist (0); |
| 778 | sl->list = get_shopt_options (); |
| 779 | sl->list_len = array_len (sl->list); |
| 780 | itp->slist = sl; |
| 781 | itp->flags |= LIST_DONTFREEMEMBERS; |
| 782 | return 0; |
| 783 | } |
| 784 | |
| 785 | /* Generate a list of all matches for TEXT using the STRINGLIST in itp->slist |
| 786 | as the list of possibilities. If the itemlist has been marked dirty or |
| 787 | it should be regenerated every time, destroy the old STRINGLIST and make a |
| 788 | new one before trying the match. */ |
| 789 | static STRINGLIST * |
| 790 | gen_matches_from_itemlist (itp, text) |
| 791 | ITEMLIST *itp; |
| 792 | char *text; |
| 793 | { |
| 794 | STRINGLIST *ret, *sl; |
| 795 | int tlen, i, n; |
| 796 | |
| 797 | if ((itp->flags & (LIST_DIRTY|LIST_DYNAMIC)) || |
| 798 | (itp->flags & LIST_INITIALIZED) == 0) |
| 799 | { |
| 800 | if (itp->flags & (LIST_DIRTY | LIST_DYNAMIC)) |
| 801 | clean_itemlist (itp); |
| 802 | if ((itp->flags & LIST_INITIALIZED) == 0) |
| 803 | initialize_itemlist (itp); |
| 804 | } |
| 805 | ret = alloc_stringlist (itp->slist->list_len+1); |
| 806 | sl = itp->slist; |
| 807 | tlen = STRLEN (text); |
| 808 | for (i = n = 0; i < sl->list_len; i++) |
| 809 | { |
| 810 | if (tlen == 0 || STREQN (sl->list[i], text, tlen)) |
| 811 | ret->list[n++] = STRDUP (sl->list[i]); |
| 812 | } |
| 813 | ret->list[ret->list_len = n] = (char *)NULL; |
| 814 | return ret; |
| 815 | } |
| 816 | |
| 817 | /* A wrapper for filename_completion_function that dequotes the filename |
| 818 | before attempting completions. */ |
| 819 | static char * |
| 820 | pcomp_filename_completion_function (text, state) |
| 821 | char *text; |
| 822 | int state; |
| 823 | { |
| 824 | static char *dfn; /* dequoted filename */ |
| 825 | int qc; |
| 826 | |
| 827 | if (state == 0) |
| 828 | { |
| 829 | FREE (dfn); |
| 830 | /* remove backslashes quoting special characters in filenames. */ |
| 831 | if (rl_filename_dequoting_function) |
| 832 | { |
| 833 | qc = (text[0] == '"' || text[0] == '\'') ? text[0] : 0; |
| 834 | dfn = (*rl_filename_dequoting_function) (text, qc); |
| 835 | } |
| 836 | else |
| 837 | dfn = savestring (text); |
| 838 | } |
| 839 | |
| 840 | return (filename_completion_function (dfn, state)); |
| 841 | } |
| 842 | |
| 843 | #define GEN_COMPS(bmap, flag, it, text, glist, tlist) \ |
| 844 | do { \ |
| 845 | if (bmap & flag) \ |
| 846 | { \ |
| 847 | tlist = gen_matches_from_itemlist (it, text); \ |
| 848 | glist = append_stringlist (glist, tlist); \ |
| 849 | free_stringlist (tlist); \ |
| 850 | } \ |
| 851 | } while (0) |
| 852 | |
| 853 | #define GEN_XCOMPS(bmap, flag, text, func, cmatches, glist, tlist) \ |
| 854 | do { \ |
| 855 | if (bmap & flag) \ |
| 856 | { \ |
| 857 | cmatches = completion_matches (text, func); \ |
| 858 | tlist = completions_to_stringlist (cmatches); \ |
| 859 | glist = append_stringlist (glist, tlist); \ |
| 860 | free_array (cmatches); \ |
| 861 | free_stringlist (tlist); \ |
| 862 | } \ |
| 863 | } while (0) |
| 864 | |
| 865 | /* Functions to generate lists of matches from the actions member of CS. */ |
| 866 | |
| 867 | static STRINGLIST * |
| 868 | gen_action_completions (cs, text) |
| 869 | COMPSPEC *cs; |
| 870 | char *text; |
| 871 | { |
| 872 | STRINGLIST *ret, *tmatches; |
| 873 | char **cmatches; /* from completion_matches ... */ |
| 874 | unsigned long flags; |
| 875 | |
| 876 | ret = tmatches = (STRINGLIST *)NULL; |
| 877 | flags = cs->actions; |
| 878 | |
| 879 | GEN_COMPS (flags, CA_ALIAS, &it_aliases, text, ret, tmatches); |
| 880 | GEN_COMPS (flags, CA_ARRAYVAR, &it_arrayvars, text, ret, tmatches); |
| 881 | GEN_COMPS (flags, CA_BINDING, &it_bindings, text, ret, tmatches); |
| 882 | GEN_COMPS (flags, CA_BUILTIN, &it_builtins, text, ret, tmatches); |
| 883 | GEN_COMPS (flags, CA_DISABLED, &it_disabled, text, ret, tmatches); |
| 884 | GEN_COMPS (flags, CA_ENABLED, &it_enabled, text, ret, tmatches); |
| 885 | GEN_COMPS (flags, CA_EXPORT, &it_exports, text, ret, tmatches); |
| 886 | GEN_COMPS (flags, CA_FUNCTION, &it_functions, text, ret, tmatches); |
| 887 | GEN_COMPS (flags, CA_HOSTNAME, &it_hostnames, text, ret, tmatches); |
| 888 | GEN_COMPS (flags, CA_JOB, &it_jobs, text, ret, tmatches); |
| 889 | GEN_COMPS (flags, CA_KEYWORD, &it_keywords, text, ret, tmatches); |
| 890 | GEN_COMPS (flags, CA_RUNNING, &it_running, text, ret, tmatches); |
| 891 | GEN_COMPS (flags, CA_SETOPT, &it_setopts, text, ret, tmatches); |
| 892 | GEN_COMPS (flags, CA_SHOPT, &it_shopts, text, ret, tmatches); |
| 893 | GEN_COMPS (flags, CA_SIGNAL, &it_signals, text, ret, tmatches); |
| 894 | GEN_COMPS (flags, CA_STOPPED, &it_stopped, text, ret, tmatches); |
| 895 | GEN_COMPS (flags, CA_VARIABLE, &it_variables, text, ret, tmatches); |
| 896 | |
| 897 | GEN_XCOMPS(flags, CA_COMMAND, text, command_word_completion_function, cmatches, ret, tmatches); |
| 898 | GEN_XCOMPS(flags, CA_FILE, text, pcomp_filename_completion_function, cmatches, ret, tmatches); |
| 899 | GEN_XCOMPS(flags, CA_USER, text, username_completion_function, cmatches, ret, tmatches); |
| 900 | |
| 901 | /* And lastly, the special case for directories */ |
| 902 | if (flags & CA_DIRECTORY) |
| 903 | { |
| 904 | cmatches = bash_directory_completion_matches (text); |
| 905 | tmatches = completions_to_stringlist (cmatches); |
| 906 | ret = append_stringlist (ret, tmatches); |
| 907 | free_array (cmatches); |
| 908 | free_stringlist (tmatches); |
| 909 | } |
| 910 | |
| 911 | return ret; |
| 912 | } |
| 913 | |
| 914 | /* Generate a list of matches for CS->globpat. Unresolved: should this use |
| 915 | TEXT as a match prefix, or just go without? Currently, the code does not |
| 916 | use TEXT, just globs CS->globpat and returns the results. If we do decide |
| 917 | to use TEXT, we should call quote_string_for_globbing before the call to |
| 918 | glob_filename. */ |
| 919 | static STRINGLIST * |
| 920 | gen_globpat_matches (cs, text) |
| 921 | COMPSPEC *cs; |
| 922 | char *text; |
| 923 | { |
| 924 | STRINGLIST *sl; |
| 925 | char *t; |
| 926 | |
| 927 | sl = alloc_stringlist (0); |
| 928 | sl->list = glob_filename (cs->globpat); |
| 929 | if (GLOB_FAILED (sl->list)) |
| 930 | sl->list = (char **)NULL; |
| 931 | if (sl->list) |
| 932 | sl->list_len = sl->list_size = array_len (sl->list); |
| 933 | return sl; |
| 934 | } |
| 935 | |
| 936 | /* Perform the shell word expansions on CS->words and return the results. |
| 937 | Again, this ignores TEXT. */ |
| 938 | static STRINGLIST * |
| 939 | gen_wordlist_matches (cs, text) |
| 940 | COMPSPEC *cs; |
| 941 | char *text; |
| 942 | { |
| 943 | WORD_LIST *l, *l2; |
| 944 | STRINGLIST *sl; |
| 945 | int nw, tlen; |
| 946 | |
| 947 | if (cs->words == 0 || cs->words[0] == '\0') |
| 948 | return ((STRINGLIST *)NULL); |
| 949 | |
| 950 | /* This used to be a simple expand_string(cs->words, 0), but that won't |
| 951 | do -- there's no way to split a simple list into individual words |
| 952 | that way, since the shell semantics say that word splitting is done |
| 953 | only on the results of expansion. */ |
| 954 | l = split_at_delims (cs->words, strlen (cs->words), (char *)NULL, -1, (int *)NULL, (int *)NULL); |
| 955 | if (l == 0) |
| 956 | return ((STRINGLIST *)NULL); |
| 957 | /* This will jump back to the top level if the expansion fails... */ |
| 958 | l2 = expand_words_shellexp (l); |
| 959 | dispose_words (l); |
| 960 | |
| 961 | nw = list_length (l2); |
| 962 | sl = alloc_stringlist (nw + 1); |
| 963 | tlen = STRLEN (text); |
| 964 | |
| 965 | for (nw = 0, l = l2; l; l = l->next) |
| 966 | { |
| 967 | if (tlen == 0 || STREQN (l->word->word, text, tlen)) |
| 968 | sl->list[nw++] = STRDUP (l->word->word); |
| 969 | } |
| 970 | sl->list[sl->list_len = nw] = (char *)NULL; |
| 971 | |
| 972 | return sl; |
| 973 | } |
| 974 | |
| 975 | #ifdef ARRAY_VARS |
| 976 | |
| 977 | static SHELL_VAR * |
| 978 | bind_comp_words (lwords) |
| 979 | WORD_LIST *lwords; |
| 980 | { |
| 981 | SHELL_VAR *v; |
| 982 | |
| 983 | v = find_variable ("COMP_WORDS"); |
| 984 | if (v == 0) |
| 985 | v = make_new_array_variable ("COMP_WORDS"); |
| 986 | if (readonly_p (v)) |
| 987 | VUNSETATTR (v, att_readonly); |
| 988 | if (array_p (v) == 0) |
| 989 | v = convert_var_to_array (v); |
| 990 | v = assign_array_var_from_word_list (v, lwords); |
| 991 | return v; |
| 992 | } |
| 993 | #endif /* ARRAY_VARS */ |
| 994 | |
| 995 | static void |
| 996 | bind_compfunc_variables (line, ind, lwords, cw, exported) |
| 997 | char *line; |
| 998 | int ind; |
| 999 | WORD_LIST *lwords; |
| 1000 | int cw, exported; |
| 1001 | { |
| 1002 | char ibuf[32]; |
| 1003 | char *value; |
| 1004 | SHELL_VAR *v; |
| 1005 | |
| 1006 | /* Set the variables that the function expects while it executes. Maybe |
| 1007 | these should be in the function environment (temporary_env). */ |
| 1008 | v = bind_variable ("COMP_LINE", line); |
| 1009 | if (v && exported) |
| 1010 | VSETATTR(v, att_exported); |
| 1011 | |
| 1012 | value = inttostr (ind, ibuf, 32); |
| 1013 | v = bind_int_variable ("COMP_POINT", value); |
| 1014 | if (v && exported) |
| 1015 | VSETATTR(v, att_exported); |
| 1016 | |
| 1017 | /* Since array variables can't be exported, we don't bother making the |
| 1018 | array of words. */ |
| 1019 | if (exported == 0) |
| 1020 | { |
| 1021 | #ifdef ARRAY_VARS |
| 1022 | v = bind_comp_words (lwords); |
| 1023 | value = inttostr (cw, ibuf, 32); |
| 1024 | bind_int_variable ("COMP_CWORD", value); |
| 1025 | #endif |
| 1026 | } |
| 1027 | else |
| 1028 | array_needs_making = 1; |
| 1029 | } |
| 1030 | |
| 1031 | static void |
| 1032 | unbind_compfunc_variables (exported) |
| 1033 | int exported; |
| 1034 | { |
| 1035 | makunbound ("COMP_LINE", shell_variables); |
| 1036 | makunbound ("COMP_POINT", shell_variables); |
| 1037 | #ifdef ARRAY_VARS |
| 1038 | makunbound ("COMP_WORDS", shell_variables); |
| 1039 | makunbound ("COMP_CWORD", shell_variables); |
| 1040 | #endif |
| 1041 | if (exported) |
| 1042 | array_needs_making = 1; |
| 1043 | } |
| 1044 | |
| 1045 | /* Build the list of words to pass to a function or external command |
| 1046 | as arguments. When the function or command is invoked, |
| 1047 | |
| 1048 | $0 == function or command being invoked |
| 1049 | $1 == command name |
| 1050 | $2 = word to be completed (possibly null) |
| 1051 | $3 = previous word |
| 1052 | |
| 1053 | Functions can access all of the words in the current command line |
| 1054 | with the COMP_WORDS array. External commands cannot. */ |
| 1055 | |
| 1056 | static WORD_LIST * |
| 1057 | build_arg_list (cmd, text, lwords, ind) |
| 1058 | char *cmd; |
| 1059 | char *text; |
| 1060 | WORD_LIST *lwords; |
| 1061 | int ind; |
| 1062 | { |
| 1063 | WORD_LIST *ret, *cl, *l; |
| 1064 | WORD_DESC *w; |
| 1065 | int i; |
| 1066 | |
| 1067 | ret = (WORD_LIST *)NULL; |
| 1068 | w = make_word (cmd); |
| 1069 | ret = make_word_list (w, (WORD_LIST *)NULL); |
| 1070 | |
| 1071 | w = (lwords && lwords->word) ? copy_word (lwords->word) : make_word (""); |
| 1072 | cl = ret->next = make_word_list (w, (WORD_LIST *)NULL); |
| 1073 | |
| 1074 | w = make_word (text); |
| 1075 | cl->next = make_word_list (w, (WORD_LIST *)NULL); |
| 1076 | cl = cl->next; |
| 1077 | |
| 1078 | /* Search lwords for current word */ |
| 1079 | for (l = lwords, i = 1; l && i < ind-1; l = l->next, i++) |
| 1080 | ; |
| 1081 | w = (l && l->word) ? copy_word (l->word) : make_word (""); |
| 1082 | cl->next = make_word_list (w, (WORD_LIST *)NULL); |
| 1083 | |
| 1084 | return ret; |
| 1085 | } |
| 1086 | |
| 1087 | /* Build a command string with |
| 1088 | $0 == cs->funcname (function to execute for completion list) |
| 1089 | $1 == command name (command being completed) |
| 1090 | $2 = word to be completed (possibly null) |
| 1091 | $3 = previous word |
| 1092 | and run in the current shell. The function should put its completion |
| 1093 | list into the array variable COMPREPLY. We build a STRINGLIST |
| 1094 | from the results and return it. |
| 1095 | |
| 1096 | Since the shell function should return its list of matches in an array |
| 1097 | variable, this does nothing if arrays are not compiled into the shell. */ |
| 1098 | |
| 1099 | static STRINGLIST * |
| 1100 | gen_shell_function_matches (cs, text, line, ind, lwords, nw, cw) |
| 1101 | COMPSPEC *cs; |
| 1102 | char *text, *line; |
| 1103 | int ind; |
| 1104 | WORD_LIST *lwords; |
| 1105 | int nw, cw; |
| 1106 | { |
| 1107 | char *funcname; |
| 1108 | STRINGLIST *sl; |
| 1109 | SHELL_VAR *f, *v; |
| 1110 | WORD_LIST *cmdlist; |
| 1111 | int fval; |
| 1112 | #if defined (ARRAY_VARS) |
| 1113 | ARRAY *a; |
| 1114 | #endif |
| 1115 | |
| 1116 | funcname = cs->funcname; |
| 1117 | f = find_function (funcname); |
| 1118 | if (f == 0) |
| 1119 | { |
| 1120 | fprintf (stderr, "gen_shell_function_matches: function `%s' not found\n", funcname); |
| 1121 | ding (); |
| 1122 | rl_on_new_line (); |
| 1123 | return ((STRINGLIST *)NULL); |
| 1124 | } |
| 1125 | |
| 1126 | #if !defined (ARRAY_VARS) |
| 1127 | return ((STRINGLIST *)NULL); |
| 1128 | #else |
| 1129 | |
| 1130 | /* We pass cw - 1 because command_line_to_word_list returns indices that are |
| 1131 | 1-based, while bash arrays are 0-based. */ |
| 1132 | bind_compfunc_variables (line, ind, lwords, cw - 1, 0); |
| 1133 | |
| 1134 | cmdlist = build_arg_list (funcname, text, lwords, cw); |
| 1135 | |
| 1136 | fval = execute_shell_function (f, cmdlist); |
| 1137 | |
| 1138 | /* Now clean up and destroy everything. */ |
| 1139 | dispose_words (cmdlist); |
| 1140 | unbind_compfunc_variables (0); |
| 1141 | |
| 1142 | /* The list of completions is returned in the array variable COMPREPLY. */ |
| 1143 | v = find_variable ("COMPREPLY"); |
| 1144 | if (v == 0) |
| 1145 | return ((STRINGLIST *)NULL); |
| 1146 | if (array_p (v) == 0) |
| 1147 | v = convert_var_to_array (v); |
| 1148 | |
| 1149 | a = array_cell (v); |
| 1150 | if (a == 0 || array_empty (a)) |
| 1151 | sl = (STRINGLIST *)NULL; |
| 1152 | else |
| 1153 | { |
| 1154 | /* XXX - should we filter the list of completions so only those matching |
| 1155 | TEXT are returned? Right now, we do not. */ |
| 1156 | sl = alloc_stringlist (0); |
| 1157 | sl->list = array_to_argv (a); |
| 1158 | sl->list_len = sl->list_size = array_num_elements (a); |
| 1159 | } |
| 1160 | |
| 1161 | /* XXX - should we unbind COMPREPLY here? */ |
| 1162 | makunbound ("COMPREPLY", shell_variables); |
| 1163 | |
| 1164 | return (sl); |
| 1165 | #endif |
| 1166 | } |
| 1167 | |
| 1168 | /* Build a command string with |
| 1169 | $0 == cs->command (command to execute for completion list) |
| 1170 | $1 == command name (command being completed) |
| 1171 | $2 = word to be completed (possibly null) |
| 1172 | $3 = previous word |
| 1173 | and run in with command substitution. Parse the results, one word |
| 1174 | per line, with backslashes allowed to escape newlines. Build a |
| 1175 | STRINGLIST from the results and return it. */ |
| 1176 | |
| 1177 | static STRINGLIST * |
| 1178 | gen_command_matches (cs, text, line, ind, lwords, nw, cw) |
| 1179 | COMPSPEC *cs; |
| 1180 | char *text, *line; |
| 1181 | int ind; |
| 1182 | WORD_LIST *lwords; |
| 1183 | int nw, cw; |
| 1184 | { |
| 1185 | char *csbuf, *cscmd, *t; |
| 1186 | int cmdlen, cmdsize, n, ws, we; |
| 1187 | WORD_LIST *cmdlist, *cl; |
| 1188 | STRINGLIST *sl; |
| 1189 | |
| 1190 | bind_compfunc_variables (line, ind, lwords, cw, 1); |
| 1191 | cmdlist = build_arg_list (cs->command, text, lwords, cw); |
| 1192 | |
| 1193 | /* Estimate the size needed for the buffer. */ |
| 1194 | n = strlen (cs->command); |
| 1195 | cmdsize = n + 1; |
| 1196 | for (cl = cmdlist->next; cl; cl = cl->next) |
| 1197 | cmdsize += STRLEN (cl->word->word) + 3; |
| 1198 | cmdsize += 2; |
| 1199 | |
| 1200 | /* allocate the string for the command and fill it in. */ |
| 1201 | cscmd = xmalloc (cmdsize + 1); |
| 1202 | |
| 1203 | strcpy (cscmd, cs->command); /* $0 */ |
| 1204 | cmdlen = n; |
| 1205 | cscmd[cmdlen++] = ' '; |
| 1206 | for (cl = cmdlist->next; cl; cl = cl->next) /* $1, $2, $3, ... */ |
| 1207 | { |
| 1208 | t = single_quote (cl->word->word ? cl->word->word : ""); |
| 1209 | n = strlen (t); |
| 1210 | RESIZE_MALLOCED_BUFFER (cscmd, cmdlen, n + 2, cmdsize, 64); |
| 1211 | strcpy (cscmd + cmdlen, t); |
| 1212 | cmdlen += n; |
| 1213 | if (cl->next) |
| 1214 | cscmd[cmdlen++] = ' '; |
| 1215 | free (t); |
| 1216 | } |
| 1217 | cscmd[cmdlen] = '\0'; |
| 1218 | |
| 1219 | csbuf = command_substitute (cscmd, 0); |
| 1220 | |
| 1221 | /* Now clean up and destroy everything. */ |
| 1222 | dispose_words (cmdlist); |
| 1223 | free (cscmd); |
| 1224 | unbind_compfunc_variables (1); |
| 1225 | |
| 1226 | if (csbuf == 0 || *csbuf == '\0') |
| 1227 | { |
| 1228 | FREE (csbuf); |
| 1229 | return ((STRINGLIST *)NULL); |
| 1230 | } |
| 1231 | |
| 1232 | /* Now break CSBUF up at newlines, with backslash allowed to escape a |
| 1233 | newline, and put the individual words into a STRINGLIST. */ |
| 1234 | sl = alloc_stringlist (16); |
| 1235 | for (ws = 0; csbuf[ws]; ) |
| 1236 | { |
| 1237 | we = ws; |
| 1238 | while (csbuf[we] && csbuf[we] != '\n') |
| 1239 | { |
| 1240 | if (csbuf[we] == '\\' && csbuf[we+1] == '\n') |
| 1241 | we++; |
| 1242 | we++; |
| 1243 | } |
| 1244 | t = substring (csbuf, ws, we); |
| 1245 | if (sl->list_len >= sl->list_size - 1) |
| 1246 | realloc_stringlist (sl, sl->list_size + 16); |
| 1247 | sl->list[sl->list_len++] = t; |
| 1248 | while (csbuf[we] == '\n') we++; |
| 1249 | ws = we; |
| 1250 | } |
| 1251 | sl->list[sl->list_len] = (char *)NULL; |
| 1252 | |
| 1253 | free (csbuf); |
| 1254 | return (sl); |
| 1255 | } |
| 1256 | |
| 1257 | static WORD_LIST * |
| 1258 | command_line_to_word_list (line, llen, sentinel, nwp, cwp) |
| 1259 | char *line; |
| 1260 | int llen, sentinel, *nwp, *cwp; |
| 1261 | { |
| 1262 | WORD_LIST *ret; |
| 1263 | char *delims; |
| 1264 | |
| 1265 | delims = "()<>;&| \t\n"; /* shell metacharacters break words */ |
| 1266 | ret = split_at_delims (line, llen, delims, sentinel, nwp, cwp); |
| 1267 | return (ret); |
| 1268 | } |
| 1269 | |
| 1270 | /* Evaluate COMPSPEC *cs and return all matches for WORD. */ |
| 1271 | |
| 1272 | STRINGLIST * |
| 1273 | gen_compspec_completions (cs, cmd, word, start, end) |
| 1274 | COMPSPEC *cs; |
| 1275 | char *cmd; |
| 1276 | char *word; |
| 1277 | int start, end; |
| 1278 | { |
| 1279 | STRINGLIST *ret, *tmatches; |
| 1280 | char *line, *lword; |
| 1281 | int llen, nw, cw; |
| 1282 | WORD_LIST *lwords; |
| 1283 | |
| 1284 | debug_printf ("programmable_completions (%s, %s, %d, %d)", cmd, word, start, end); |
| 1285 | debug_printf ("programmable_completions: %s -> 0x%x", cmd, (int)cs); |
| 1286 | ret = gen_action_completions (cs, word); |
| 1287 | if (ret && progcomp_debug) |
| 1288 | { |
| 1289 | debug_printf ("gen_action_completions (0x%x, %s) -->", (int)cs, word); |
| 1290 | print_stringlist (ret, "\t"); |
| 1291 | rl_on_new_line (); |
| 1292 | } |
| 1293 | |
| 1294 | /* Now we start generating completions based on the other members of CS. */ |
| 1295 | if (cs->globpat) |
| 1296 | { |
| 1297 | tmatches = gen_globpat_matches (cs, word); |
| 1298 | if (tmatches) |
| 1299 | { |
| 1300 | if (progcomp_debug) |
| 1301 | { |
| 1302 | debug_printf ("gen_globpat_matches (0x%x, %s) -->", (int)cs, word); |
| 1303 | print_stringlist (tmatches, "\t"); |
| 1304 | rl_on_new_line (); |
| 1305 | } |
| 1306 | ret = append_stringlist (ret, tmatches); |
| 1307 | free_stringlist (tmatches); |
| 1308 | rl_filename_completion_desired = 1; |
| 1309 | } |
| 1310 | } |
| 1311 | |
| 1312 | if (cs->words) |
| 1313 | { |
| 1314 | tmatches = gen_wordlist_matches (cs, word); |
| 1315 | if (tmatches) |
| 1316 | { |
| 1317 | if (progcomp_debug) |
| 1318 | { |
| 1319 | debug_printf ("gen_wordlist_matches (0x%x, %s) -->", (int)cs, word); |
| 1320 | print_stringlist (tmatches, "\t"); |
| 1321 | rl_on_new_line (); |
| 1322 | } |
| 1323 | ret = append_stringlist (ret, tmatches); |
| 1324 | free_stringlist (tmatches); |
| 1325 | } |
| 1326 | } |
| 1327 | |
| 1328 | lwords = (WORD_LIST *)NULL; |
| 1329 | line = (char *)NULL; |
| 1330 | if (cs->command || cs->funcname) |
| 1331 | { |
| 1332 | /* If we have a command or function to execute, we need to first break |
| 1333 | the command line into individual words, find the number of words, |
| 1334 | and find the word in the list containing the word to be completed. */ |
| 1335 | line = substring (rl_line_buffer, start, end); |
| 1336 | llen = end - start; |
| 1337 | |
| 1338 | debug_printf ("command_line_to_word_list (%s, %d, %d, 0x%x, 0x%x)", |
| 1339 | line, llen, rl_point - start, &nw, &cw); |
| 1340 | lwords = command_line_to_word_list (line, llen, rl_point - start, &nw, &cw); |
| 1341 | if (lwords == 0 && llen > 0) |
| 1342 | debug_printf ("ERROR: command_line_to_word_list returns NULL"); |
| 1343 | else if (progcomp_debug) |
| 1344 | { |
| 1345 | debug_printf ("command_line_to_word_list -->"); |
| 1346 | printf ("\t"); |
| 1347 | print_word_list (lwords, "!"); |
| 1348 | printf ("\n"); |
| 1349 | fflush(stdout); |
| 1350 | rl_on_new_line (); |
| 1351 | } |
| 1352 | } |
| 1353 | |
| 1354 | if (cs->funcname) |
| 1355 | { |
| 1356 | tmatches = gen_shell_function_matches (cs, word, line, rl_point - start, lwords, nw, cw); |
| 1357 | if (tmatches) |
| 1358 | { |
| 1359 | if (progcomp_debug) |
| 1360 | { |
| 1361 | debug_printf ("gen_shell_function_matches (0x%x, %s, 0x%x, %d, %d) -->", (int)cs, word, lwords, nw, cw); |
| 1362 | print_stringlist (tmatches, "\t"); |
| 1363 | rl_on_new_line (); |
| 1364 | } |
| 1365 | ret = append_stringlist (ret, tmatches); |
| 1366 | free_stringlist (tmatches); |
| 1367 | } |
| 1368 | } |
| 1369 | |
| 1370 | if (cs->command) |
| 1371 | { |
| 1372 | tmatches = gen_command_matches (cs, word, line, rl_point - start, lwords, nw, cw); |
| 1373 | if (tmatches) |
| 1374 | { |
| 1375 | if (progcomp_debug) |
| 1376 | { |
| 1377 | debug_printf ("gen_command_matches (0x%x, %s, 0x%x, %d, %d) -->", (int)cs, word, lwords, nw, cw); |
| 1378 | print_stringlist (tmatches, "\t"); |
| 1379 | rl_on_new_line (); |
| 1380 | } |
| 1381 | ret = append_stringlist (ret, tmatches); |
| 1382 | free_stringlist (tmatches); |
| 1383 | } |
| 1384 | } |
| 1385 | |
| 1386 | if (cs->command || cs->funcname) |
| 1387 | { |
| 1388 | if (lwords) |
| 1389 | dispose_words (lwords); |
| 1390 | FREE (line); |
| 1391 | } |
| 1392 | |
| 1393 | if (cs->filterpat) |
| 1394 | { |
| 1395 | tmatches = filter_stringlist (ret, cs->filterpat, word); |
| 1396 | if (progcomp_debug) |
| 1397 | { |
| 1398 | debug_printf ("filter_stringlist (0x%x, %s, %s) -->", ret, cs->filterpat, word); |
| 1399 | print_stringlist (tmatches, "\t"); |
| 1400 | rl_on_new_line (); |
| 1401 | } |
| 1402 | if (ret && ret != tmatches) |
| 1403 | { |
| 1404 | FREE (ret->list); |
| 1405 | free (ret); |
| 1406 | } |
| 1407 | ret = tmatches; |
| 1408 | } |
| 1409 | |
| 1410 | if (cs->prefix || cs->suffix) |
| 1411 | ret = prefix_suffix_stringlist (ret, cs->prefix, cs->suffix); |
| 1412 | |
| 1413 | return (ret); |
| 1414 | } |
| 1415 | |
| 1416 | /* The driver function for the programmable completion code. Returns a list |
| 1417 | of matches for WORD, which is an argument to command CMD. START and END |
| 1418 | bound the command currently being completed in rl_line_buffer. */ |
| 1419 | char ** |
| 1420 | programmable_completions (cmd, word, start, end, foundp) |
| 1421 | char *cmd, *word; |
| 1422 | int start, end, *foundp; |
| 1423 | { |
| 1424 | COMPSPEC *cs; |
| 1425 | STRINGLIST *ret; |
| 1426 | char **rmatches, *t; |
| 1427 | |
| 1428 | /* We look at the basename of CMD if the full command does not have |
| 1429 | an associated COMPSPEC. */ |
| 1430 | cs = find_compspec (cmd); |
| 1431 | if (cs == 0) |
| 1432 | { |
| 1433 | t = strrchr (cmd, '/'); |
| 1434 | if (t) |
| 1435 | cs = find_compspec (++t); |
| 1436 | } |
| 1437 | if (cs == 0) |
| 1438 | { |
| 1439 | if (foundp) |
| 1440 | *foundp = 0; |
| 1441 | return ((char **)NULL); |
| 1442 | } |
| 1443 | |
| 1444 | /* Signal the caller that we found a COMPSPEC for this command. */ |
| 1445 | if (foundp) |
| 1446 | *foundp = 1; |
| 1447 | |
| 1448 | ret = gen_compspec_completions (cs, cmd, word, start, end); |
| 1449 | |
| 1450 | if (ret) |
| 1451 | { |
| 1452 | rmatches = ret->list; |
| 1453 | free (ret); |
| 1454 | } |
| 1455 | else |
| 1456 | rmatches = (char **)NULL; |
| 1457 | |
| 1458 | return (rmatches); |
| 1459 | } |
| 1460 | |
| 1461 | #endif /* PROGRAMMABLE_COMPLETION */ |