Bram Moolenaar | 0522ba0 | 2019-08-27 22:48:30 +0200 | [diff] [blame] | 1 | /* vi:set ts=8 sts=4 sw=4 noet: |
| 2 | * |
| 3 | * VIM - Vi IMproved by Bram Moolenaar |
| 4 | * |
| 5 | * Do ":help uganda" in Vim to read copying and usage conditions. |
| 6 | * Do ":help credits" in Vim to see a list of people who contributed. |
| 7 | * See README.txt for an overview of the Vim source code. |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * evalvars.c: functions for dealing with variables |
| 12 | */ |
| 13 | |
| 14 | #include "vim.h" |
| 15 | |
| 16 | #if defined(FEAT_EVAL) || defined(PROTO) |
| 17 | |
| 18 | static char *e_letunexp = N_("E18: Unexpected characters in :let"); |
| 19 | |
| 20 | static void ex_let_const(exarg_T *eap, int is_const); |
| 21 | static char_u *skip_var_one(char_u *arg); |
| 22 | static void list_glob_vars(int *first); |
| 23 | static void list_buf_vars(int *first); |
| 24 | static void list_win_vars(int *first); |
| 25 | static void list_tab_vars(int *first); |
| 26 | static char_u *list_arg_vars(exarg_T *eap, char_u *arg, int *first); |
| 27 | static char_u *ex_let_one(char_u *arg, typval_T *tv, int copy, int is_const, char_u *endchars, char_u *op); |
| 28 | static void ex_unletlock(exarg_T *eap, char_u *argstart, int deep); |
| 29 | static int do_unlet_var(lval_T *lp, char_u *name_end, int forceit); |
| 30 | static int do_lock_var(lval_T *lp, char_u *name_end, int deep, int lock); |
| 31 | static void item_lock(typval_T *tv, int deep, int lock); |
| 32 | static void list_one_var(dictitem_T *v, char *prefix, int *first); |
| 33 | static void list_one_var_a(char *prefix, char_u *name, int type, char_u *string, int *first); |
| 34 | |
| 35 | /* |
| 36 | * Get a list of lines from a HERE document. The here document is a list of |
| 37 | * lines surrounded by a marker. |
| 38 | * cmd << {marker} |
| 39 | * {line1} |
| 40 | * {line2} |
| 41 | * .... |
| 42 | * {marker} |
| 43 | * |
| 44 | * The {marker} is a string. If the optional 'trim' word is supplied before the |
| 45 | * marker, then the leading indentation before the lines (matching the |
| 46 | * indentation in the 'cmd' line) is stripped. |
| 47 | * Returns a List with {lines} or NULL. |
| 48 | */ |
| 49 | static list_T * |
| 50 | heredoc_get(exarg_T *eap, char_u *cmd) |
| 51 | { |
| 52 | char_u *theline; |
| 53 | char_u *marker; |
| 54 | list_T *l; |
| 55 | char_u *p; |
| 56 | int marker_indent_len = 0; |
| 57 | int text_indent_len = 0; |
| 58 | char_u *text_indent = NULL; |
| 59 | |
| 60 | if (eap->getline == NULL) |
| 61 | { |
| 62 | emsg(_("E991: cannot use =<< here")); |
| 63 | return NULL; |
| 64 | } |
| 65 | |
| 66 | // Check for the optional 'trim' word before the marker |
| 67 | cmd = skipwhite(cmd); |
| 68 | if (STRNCMP(cmd, "trim", 4) == 0 && (cmd[4] == NUL || VIM_ISWHITE(cmd[4]))) |
| 69 | { |
| 70 | cmd = skipwhite(cmd + 4); |
| 71 | |
| 72 | // Trim the indentation from all the lines in the here document. |
| 73 | // The amount of indentation trimmed is the same as the indentation of |
| 74 | // the first line after the :let command line. To find the end marker |
| 75 | // the indent of the :let command line is trimmed. |
| 76 | p = *eap->cmdlinep; |
| 77 | while (VIM_ISWHITE(*p)) |
| 78 | { |
| 79 | p++; |
| 80 | marker_indent_len++; |
| 81 | } |
| 82 | text_indent_len = -1; |
| 83 | } |
| 84 | |
| 85 | // The marker is the next word. |
| 86 | if (*cmd != NUL && *cmd != '"') |
| 87 | { |
| 88 | marker = skipwhite(cmd); |
| 89 | p = skiptowhite(marker); |
| 90 | if (*skipwhite(p) != NUL && *skipwhite(p) != '"') |
| 91 | { |
| 92 | emsg(_(e_trailing)); |
| 93 | return NULL; |
| 94 | } |
| 95 | *p = NUL; |
| 96 | if (vim_islower(*marker)) |
| 97 | { |
| 98 | emsg(_("E221: Marker cannot start with lower case letter")); |
| 99 | return NULL; |
| 100 | } |
| 101 | } |
| 102 | else |
| 103 | { |
| 104 | emsg(_("E172: Missing marker")); |
| 105 | return NULL; |
| 106 | } |
| 107 | |
| 108 | l = list_alloc(); |
| 109 | if (l == NULL) |
| 110 | return NULL; |
| 111 | |
| 112 | for (;;) |
| 113 | { |
| 114 | int mi = 0; |
| 115 | int ti = 0; |
| 116 | |
| 117 | theline = eap->getline(NUL, eap->cookie, 0, FALSE); |
| 118 | if (theline == NULL) |
| 119 | { |
| 120 | semsg(_("E990: Missing end marker '%s'"), marker); |
| 121 | break; |
| 122 | } |
| 123 | |
| 124 | // with "trim": skip the indent matching the :let line to find the |
| 125 | // marker |
| 126 | if (marker_indent_len > 0 |
| 127 | && STRNCMP(theline, *eap->cmdlinep, marker_indent_len) == 0) |
| 128 | mi = marker_indent_len; |
| 129 | if (STRCMP(marker, theline + mi) == 0) |
| 130 | { |
| 131 | vim_free(theline); |
| 132 | break; |
| 133 | } |
| 134 | |
| 135 | if (text_indent_len == -1 && *theline != NUL) |
| 136 | { |
| 137 | // set the text indent from the first line. |
| 138 | p = theline; |
| 139 | text_indent_len = 0; |
| 140 | while (VIM_ISWHITE(*p)) |
| 141 | { |
| 142 | p++; |
| 143 | text_indent_len++; |
| 144 | } |
| 145 | text_indent = vim_strnsave(theline, text_indent_len); |
| 146 | } |
| 147 | // with "trim": skip the indent matching the first line |
| 148 | if (text_indent != NULL) |
| 149 | for (ti = 0; ti < text_indent_len; ++ti) |
| 150 | if (theline[ti] != text_indent[ti]) |
| 151 | break; |
| 152 | |
| 153 | if (list_append_string(l, theline + ti, -1) == FAIL) |
| 154 | break; |
| 155 | vim_free(theline); |
| 156 | } |
| 157 | vim_free(text_indent); |
| 158 | |
| 159 | return l; |
| 160 | } |
| 161 | |
| 162 | /* |
| 163 | * ":let" list all variable values |
| 164 | * ":let var1 var2" list variable values |
| 165 | * ":let var = expr" assignment command. |
| 166 | * ":let var += expr" assignment command. |
| 167 | * ":let var -= expr" assignment command. |
| 168 | * ":let var *= expr" assignment command. |
| 169 | * ":let var /= expr" assignment command. |
| 170 | * ":let var %= expr" assignment command. |
| 171 | * ":let var .= expr" assignment command. |
| 172 | * ":let var ..= expr" assignment command. |
| 173 | * ":let [var1, var2] = expr" unpack list. |
| 174 | */ |
| 175 | void |
| 176 | ex_let(exarg_T *eap) |
| 177 | { |
| 178 | ex_let_const(eap, FALSE); |
| 179 | } |
| 180 | |
| 181 | /* |
| 182 | * ":const" list all variable values |
| 183 | * ":const var1 var2" list variable values |
| 184 | * ":const var = expr" assignment command. |
| 185 | * ":const [var1, var2] = expr" unpack list. |
| 186 | */ |
| 187 | void |
| 188 | ex_const(exarg_T *eap) |
| 189 | { |
| 190 | ex_let_const(eap, TRUE); |
| 191 | } |
| 192 | |
| 193 | static void |
| 194 | ex_let_const(exarg_T *eap, int is_const) |
| 195 | { |
| 196 | char_u *arg = eap->arg; |
| 197 | char_u *expr = NULL; |
| 198 | typval_T rettv; |
| 199 | int i; |
| 200 | int var_count = 0; |
| 201 | int semicolon = 0; |
| 202 | char_u op[2]; |
| 203 | char_u *argend; |
| 204 | int first = TRUE; |
| 205 | int concat; |
| 206 | |
| 207 | argend = skip_var_list(arg, &var_count, &semicolon); |
| 208 | if (argend == NULL) |
| 209 | return; |
| 210 | if (argend > arg && argend[-1] == '.') // for var.='str' |
| 211 | --argend; |
| 212 | expr = skipwhite(argend); |
| 213 | concat = expr[0] == '.' |
| 214 | && ((expr[1] == '=' && current_sctx.sc_version < 2) |
| 215 | || (expr[1] == '.' && expr[2] == '=')); |
| 216 | if (*expr != '=' && !((vim_strchr((char_u *)"+-*/%", *expr) != NULL |
| 217 | && expr[1] == '=') || concat)) |
| 218 | { |
| 219 | // ":let" without "=": list variables |
| 220 | if (*arg == '[') |
| 221 | emsg(_(e_invarg)); |
| 222 | else if (expr[0] == '.') |
| 223 | emsg(_("E985: .= is not supported with script version 2")); |
| 224 | else if (!ends_excmd(*arg)) |
| 225 | // ":let var1 var2" |
| 226 | arg = list_arg_vars(eap, arg, &first); |
| 227 | else if (!eap->skip) |
| 228 | { |
| 229 | // ":let" |
| 230 | list_glob_vars(&first); |
| 231 | list_buf_vars(&first); |
| 232 | list_win_vars(&first); |
| 233 | list_tab_vars(&first); |
| 234 | list_script_vars(&first); |
| 235 | list_func_vars(&first); |
| 236 | list_vim_vars(&first); |
| 237 | } |
| 238 | eap->nextcmd = check_nextcmd(arg); |
| 239 | } |
| 240 | else if (expr[0] == '=' && expr[1] == '<' && expr[2] == '<') |
| 241 | { |
| 242 | list_T *l; |
| 243 | |
| 244 | // HERE document |
| 245 | l = heredoc_get(eap, expr + 3); |
| 246 | if (l != NULL) |
| 247 | { |
| 248 | rettv_list_set(&rettv, l); |
| 249 | op[0] = '='; |
| 250 | op[1] = NUL; |
| 251 | (void)ex_let_vars(eap->arg, &rettv, FALSE, semicolon, var_count, |
| 252 | is_const, op); |
| 253 | clear_tv(&rettv); |
| 254 | } |
| 255 | } |
| 256 | else |
| 257 | { |
| 258 | op[0] = '='; |
| 259 | op[1] = NUL; |
| 260 | if (*expr != '=') |
| 261 | { |
| 262 | if (vim_strchr((char_u *)"+-*/%.", *expr) != NULL) |
| 263 | { |
| 264 | op[0] = *expr; // +=, -=, *=, /=, %= or .= |
| 265 | if (expr[0] == '.' && expr[1] == '.') // ..= |
| 266 | ++expr; |
| 267 | } |
| 268 | expr = skipwhite(expr + 2); |
| 269 | } |
| 270 | else |
| 271 | expr = skipwhite(expr + 1); |
| 272 | |
| 273 | if (eap->skip) |
| 274 | ++emsg_skip; |
| 275 | i = eval0(expr, &rettv, &eap->nextcmd, !eap->skip); |
| 276 | if (eap->skip) |
| 277 | { |
| 278 | if (i != FAIL) |
| 279 | clear_tv(&rettv); |
| 280 | --emsg_skip; |
| 281 | } |
| 282 | else if (i != FAIL) |
| 283 | { |
| 284 | (void)ex_let_vars(eap->arg, &rettv, FALSE, semicolon, var_count, |
| 285 | is_const, op); |
| 286 | clear_tv(&rettv); |
| 287 | } |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | /* |
| 292 | * Assign the typevalue "tv" to the variable or variables at "arg_start". |
| 293 | * Handles both "var" with any type and "[var, var; var]" with a list type. |
| 294 | * When "op" is not NULL it points to a string with characters that |
| 295 | * must appear after the variable(s). Use "+", "-" or "." for add, subtract |
| 296 | * or concatenate. |
| 297 | * Returns OK or FAIL; |
| 298 | */ |
| 299 | int |
| 300 | ex_let_vars( |
| 301 | char_u *arg_start, |
| 302 | typval_T *tv, |
| 303 | int copy, // copy values from "tv", don't move |
| 304 | int semicolon, // from skip_var_list() |
| 305 | int var_count, // from skip_var_list() |
| 306 | int is_const, // lock variables for const |
| 307 | char_u *op) |
| 308 | { |
| 309 | char_u *arg = arg_start; |
| 310 | list_T *l; |
| 311 | int i; |
| 312 | listitem_T *item; |
| 313 | typval_T ltv; |
| 314 | |
| 315 | if (*arg != '[') |
| 316 | { |
| 317 | // ":let var = expr" or ":for var in list" |
| 318 | if (ex_let_one(arg, tv, copy, is_const, op, op) == NULL) |
| 319 | return FAIL; |
| 320 | return OK; |
| 321 | } |
| 322 | |
| 323 | // ":let [v1, v2] = list" or ":for [v1, v2] in listlist" |
| 324 | if (tv->v_type != VAR_LIST || (l = tv->vval.v_list) == NULL) |
| 325 | { |
| 326 | emsg(_(e_listreq)); |
| 327 | return FAIL; |
| 328 | } |
| 329 | |
| 330 | i = list_len(l); |
| 331 | if (semicolon == 0 && var_count < i) |
| 332 | { |
| 333 | emsg(_("E687: Less targets than List items")); |
| 334 | return FAIL; |
| 335 | } |
| 336 | if (var_count - semicolon > i) |
| 337 | { |
| 338 | emsg(_("E688: More targets than List items")); |
| 339 | return FAIL; |
| 340 | } |
| 341 | |
| 342 | item = l->lv_first; |
| 343 | while (*arg != ']') |
| 344 | { |
| 345 | arg = skipwhite(arg + 1); |
| 346 | arg = ex_let_one(arg, &item->li_tv, TRUE, is_const, |
| 347 | (char_u *)",;]", op); |
| 348 | item = item->li_next; |
| 349 | if (arg == NULL) |
| 350 | return FAIL; |
| 351 | |
| 352 | arg = skipwhite(arg); |
| 353 | if (*arg == ';') |
| 354 | { |
| 355 | // Put the rest of the list (may be empty) in the var after ';'. |
| 356 | // Create a new list for this. |
| 357 | l = list_alloc(); |
| 358 | if (l == NULL) |
| 359 | return FAIL; |
| 360 | while (item != NULL) |
| 361 | { |
| 362 | list_append_tv(l, &item->li_tv); |
| 363 | item = item->li_next; |
| 364 | } |
| 365 | |
| 366 | ltv.v_type = VAR_LIST; |
| 367 | ltv.v_lock = 0; |
| 368 | ltv.vval.v_list = l; |
| 369 | l->lv_refcount = 1; |
| 370 | |
| 371 | arg = ex_let_one(skipwhite(arg + 1), <v, FALSE, is_const, |
| 372 | (char_u *)"]", op); |
| 373 | clear_tv(<v); |
| 374 | if (arg == NULL) |
| 375 | return FAIL; |
| 376 | break; |
| 377 | } |
| 378 | else if (*arg != ',' && *arg != ']') |
| 379 | { |
| 380 | internal_error("ex_let_vars()"); |
| 381 | return FAIL; |
| 382 | } |
| 383 | } |
| 384 | |
| 385 | return OK; |
| 386 | } |
| 387 | |
| 388 | /* |
| 389 | * Skip over assignable variable "var" or list of variables "[var, var]". |
| 390 | * Used for ":let varvar = expr" and ":for varvar in expr". |
| 391 | * For "[var, var]" increment "*var_count" for each variable. |
| 392 | * for "[var, var; var]" set "semicolon". |
| 393 | * Return NULL for an error. |
| 394 | */ |
| 395 | char_u * |
| 396 | skip_var_list( |
| 397 | char_u *arg, |
| 398 | int *var_count, |
| 399 | int *semicolon) |
| 400 | { |
| 401 | char_u *p, *s; |
| 402 | |
| 403 | if (*arg == '[') |
| 404 | { |
| 405 | // "[var, var]": find the matching ']'. |
| 406 | p = arg; |
| 407 | for (;;) |
| 408 | { |
| 409 | p = skipwhite(p + 1); // skip whites after '[', ';' or ',' |
| 410 | s = skip_var_one(p); |
| 411 | if (s == p) |
| 412 | { |
| 413 | semsg(_(e_invarg2), p); |
| 414 | return NULL; |
| 415 | } |
| 416 | ++*var_count; |
| 417 | |
| 418 | p = skipwhite(s); |
| 419 | if (*p == ']') |
| 420 | break; |
| 421 | else if (*p == ';') |
| 422 | { |
| 423 | if (*semicolon == 1) |
| 424 | { |
| 425 | emsg(_("Double ; in list of variables")); |
| 426 | return NULL; |
| 427 | } |
| 428 | *semicolon = 1; |
| 429 | } |
| 430 | else if (*p != ',') |
| 431 | { |
| 432 | semsg(_(e_invarg2), p); |
| 433 | return NULL; |
| 434 | } |
| 435 | } |
| 436 | return p + 1; |
| 437 | } |
| 438 | else |
| 439 | return skip_var_one(arg); |
| 440 | } |
| 441 | |
| 442 | /* |
| 443 | * Skip one (assignable) variable name, including @r, $VAR, &option, d.key, |
| 444 | * l[idx]. |
| 445 | */ |
| 446 | static char_u * |
| 447 | skip_var_one(char_u *arg) |
| 448 | { |
| 449 | if (*arg == '@' && arg[1] != NUL) |
| 450 | return arg + 2; |
| 451 | return find_name_end(*arg == '$' || *arg == '&' ? arg + 1 : arg, |
| 452 | NULL, NULL, FNE_INCL_BR | FNE_CHECK_START); |
| 453 | } |
| 454 | |
| 455 | /* |
| 456 | * List variables for hashtab "ht" with prefix "prefix". |
| 457 | * If "empty" is TRUE also list NULL strings as empty strings. |
| 458 | */ |
| 459 | void |
| 460 | list_hashtable_vars( |
| 461 | hashtab_T *ht, |
| 462 | char *prefix, |
| 463 | int empty, |
| 464 | int *first) |
| 465 | { |
| 466 | hashitem_T *hi; |
| 467 | dictitem_T *di; |
| 468 | int todo; |
| 469 | char_u buf[IOSIZE]; |
| 470 | |
| 471 | todo = (int)ht->ht_used; |
| 472 | for (hi = ht->ht_array; todo > 0 && !got_int; ++hi) |
| 473 | { |
| 474 | if (!HASHITEM_EMPTY(hi)) |
| 475 | { |
| 476 | --todo; |
| 477 | di = HI2DI(hi); |
| 478 | |
| 479 | // apply :filter /pat/ to variable name |
| 480 | vim_strncpy((char_u *)buf, (char_u *)prefix, IOSIZE - 1); |
| 481 | vim_strcat((char_u *)buf, di->di_key, IOSIZE); |
| 482 | if (message_filtered(buf)) |
| 483 | continue; |
| 484 | |
| 485 | if (empty || di->di_tv.v_type != VAR_STRING |
| 486 | || di->di_tv.vval.v_string != NULL) |
| 487 | list_one_var(di, prefix, first); |
| 488 | } |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | /* |
| 493 | * List global variables. |
| 494 | */ |
| 495 | static void |
| 496 | list_glob_vars(int *first) |
| 497 | { |
| 498 | list_hashtable_vars(&globvarht, "", TRUE, first); |
| 499 | } |
| 500 | |
| 501 | /* |
| 502 | * List buffer variables. |
| 503 | */ |
| 504 | static void |
| 505 | list_buf_vars(int *first) |
| 506 | { |
| 507 | list_hashtable_vars(&curbuf->b_vars->dv_hashtab, "b:", TRUE, first); |
| 508 | } |
| 509 | |
| 510 | /* |
| 511 | * List window variables. |
| 512 | */ |
| 513 | static void |
| 514 | list_win_vars(int *first) |
| 515 | { |
| 516 | list_hashtable_vars(&curwin->w_vars->dv_hashtab, "w:", TRUE, first); |
| 517 | } |
| 518 | |
| 519 | /* |
| 520 | * List tab page variables. |
| 521 | */ |
| 522 | static void |
| 523 | list_tab_vars(int *first) |
| 524 | { |
| 525 | list_hashtable_vars(&curtab->tp_vars->dv_hashtab, "t:", TRUE, first); |
| 526 | } |
| 527 | |
| 528 | /* |
| 529 | * List variables in "arg". |
| 530 | */ |
| 531 | static char_u * |
| 532 | list_arg_vars(exarg_T *eap, char_u *arg, int *first) |
| 533 | { |
| 534 | int error = FALSE; |
| 535 | int len; |
| 536 | char_u *name; |
| 537 | char_u *name_start; |
| 538 | char_u *arg_subsc; |
| 539 | char_u *tofree; |
| 540 | typval_T tv; |
| 541 | |
| 542 | while (!ends_excmd(*arg) && !got_int) |
| 543 | { |
| 544 | if (error || eap->skip) |
| 545 | { |
| 546 | arg = find_name_end(arg, NULL, NULL, FNE_INCL_BR | FNE_CHECK_START); |
| 547 | if (!VIM_ISWHITE(*arg) && !ends_excmd(*arg)) |
| 548 | { |
| 549 | emsg_severe = TRUE; |
| 550 | emsg(_(e_trailing)); |
| 551 | break; |
| 552 | } |
| 553 | } |
| 554 | else |
| 555 | { |
| 556 | // get_name_len() takes care of expanding curly braces |
| 557 | name_start = name = arg; |
| 558 | len = get_name_len(&arg, &tofree, TRUE, TRUE); |
| 559 | if (len <= 0) |
| 560 | { |
| 561 | // This is mainly to keep test 49 working: when expanding |
| 562 | // curly braces fails overrule the exception error message. |
| 563 | if (len < 0 && !aborting()) |
| 564 | { |
| 565 | emsg_severe = TRUE; |
| 566 | semsg(_(e_invarg2), arg); |
| 567 | break; |
| 568 | } |
| 569 | error = TRUE; |
| 570 | } |
| 571 | else |
| 572 | { |
| 573 | if (tofree != NULL) |
| 574 | name = tofree; |
| 575 | if (get_var_tv(name, len, &tv, NULL, TRUE, FALSE) == FAIL) |
| 576 | error = TRUE; |
| 577 | else |
| 578 | { |
| 579 | // handle d.key, l[idx], f(expr) |
| 580 | arg_subsc = arg; |
| 581 | if (handle_subscript(&arg, &tv, TRUE, TRUE, |
| 582 | name, &name) == FAIL) |
| 583 | error = TRUE; |
| 584 | else |
| 585 | { |
| 586 | if (arg == arg_subsc && len == 2 && name[1] == ':') |
| 587 | { |
| 588 | switch (*name) |
| 589 | { |
| 590 | case 'g': list_glob_vars(first); break; |
| 591 | case 'b': list_buf_vars(first); break; |
| 592 | case 'w': list_win_vars(first); break; |
| 593 | case 't': list_tab_vars(first); break; |
| 594 | case 'v': list_vim_vars(first); break; |
| 595 | case 's': list_script_vars(first); break; |
| 596 | case 'l': list_func_vars(first); break; |
| 597 | default: |
| 598 | semsg(_("E738: Can't list variables for %s"), name); |
| 599 | } |
| 600 | } |
| 601 | else |
| 602 | { |
| 603 | char_u numbuf[NUMBUFLEN]; |
| 604 | char_u *tf; |
| 605 | int c; |
| 606 | char_u *s; |
| 607 | |
| 608 | s = echo_string(&tv, &tf, numbuf, 0); |
| 609 | c = *arg; |
| 610 | *arg = NUL; |
| 611 | list_one_var_a("", |
| 612 | arg == arg_subsc ? name : name_start, |
| 613 | tv.v_type, |
| 614 | s == NULL ? (char_u *)"" : s, |
| 615 | first); |
| 616 | *arg = c; |
| 617 | vim_free(tf); |
| 618 | } |
| 619 | clear_tv(&tv); |
| 620 | } |
| 621 | } |
| 622 | } |
| 623 | |
| 624 | vim_free(tofree); |
| 625 | } |
| 626 | |
| 627 | arg = skipwhite(arg); |
| 628 | } |
| 629 | |
| 630 | return arg; |
| 631 | } |
| 632 | |
| 633 | /* |
| 634 | * Set one item of ":let var = expr" or ":let [v1, v2] = list" to its value. |
| 635 | * Returns a pointer to the char just after the var name. |
| 636 | * Returns NULL if there is an error. |
| 637 | */ |
| 638 | static char_u * |
| 639 | ex_let_one( |
| 640 | char_u *arg, // points to variable name |
| 641 | typval_T *tv, // value to assign to variable |
| 642 | int copy, // copy value from "tv" |
| 643 | int is_const, // lock variable for const |
| 644 | char_u *endchars, // valid chars after variable name or NULL |
| 645 | char_u *op) // "+", "-", "." or NULL |
| 646 | { |
| 647 | int c1; |
| 648 | char_u *name; |
| 649 | char_u *p; |
| 650 | char_u *arg_end = NULL; |
| 651 | int len; |
| 652 | int opt_flags; |
| 653 | char_u *tofree = NULL; |
| 654 | |
| 655 | // ":let $VAR = expr": Set environment variable. |
| 656 | if (*arg == '$') |
| 657 | { |
| 658 | if (is_const) |
| 659 | { |
| 660 | emsg(_("E996: Cannot lock an environment variable")); |
| 661 | return NULL; |
| 662 | } |
| 663 | // Find the end of the name. |
| 664 | ++arg; |
| 665 | name = arg; |
| 666 | len = get_env_len(&arg); |
| 667 | if (len == 0) |
| 668 | semsg(_(e_invarg2), name - 1); |
| 669 | else |
| 670 | { |
| 671 | if (op != NULL && vim_strchr((char_u *)"+-*/%", *op) != NULL) |
| 672 | semsg(_(e_letwrong), op); |
| 673 | else if (endchars != NULL |
| 674 | && vim_strchr(endchars, *skipwhite(arg)) == NULL) |
| 675 | emsg(_(e_letunexp)); |
| 676 | else if (!check_secure()) |
| 677 | { |
| 678 | c1 = name[len]; |
| 679 | name[len] = NUL; |
| 680 | p = tv_get_string_chk(tv); |
| 681 | if (p != NULL && op != NULL && *op == '.') |
| 682 | { |
| 683 | int mustfree = FALSE; |
| 684 | char_u *s = vim_getenv(name, &mustfree); |
| 685 | |
| 686 | if (s != NULL) |
| 687 | { |
| 688 | p = tofree = concat_str(s, p); |
| 689 | if (mustfree) |
| 690 | vim_free(s); |
| 691 | } |
| 692 | } |
| 693 | if (p != NULL) |
| 694 | { |
| 695 | vim_setenv(name, p); |
| 696 | if (STRICMP(name, "HOME") == 0) |
| 697 | init_homedir(); |
| 698 | else if (didset_vim && STRICMP(name, "VIM") == 0) |
| 699 | didset_vim = FALSE; |
| 700 | else if (didset_vimruntime |
| 701 | && STRICMP(name, "VIMRUNTIME") == 0) |
| 702 | didset_vimruntime = FALSE; |
| 703 | arg_end = arg; |
| 704 | } |
| 705 | name[len] = c1; |
| 706 | vim_free(tofree); |
| 707 | } |
| 708 | } |
| 709 | } |
| 710 | |
| 711 | // ":let &option = expr": Set option value. |
| 712 | // ":let &l:option = expr": Set local option value. |
| 713 | // ":let &g:option = expr": Set global option value. |
| 714 | else if (*arg == '&') |
| 715 | { |
| 716 | if (is_const) |
| 717 | { |
| 718 | emsg(_("E996: Cannot lock an option")); |
| 719 | return NULL; |
| 720 | } |
| 721 | // Find the end of the name. |
| 722 | p = find_option_end(&arg, &opt_flags); |
| 723 | if (p == NULL || (endchars != NULL |
| 724 | && vim_strchr(endchars, *skipwhite(p)) == NULL)) |
| 725 | emsg(_(e_letunexp)); |
| 726 | else |
| 727 | { |
| 728 | long n; |
| 729 | int opt_type; |
| 730 | long numval; |
| 731 | char_u *stringval = NULL; |
| 732 | char_u *s; |
| 733 | |
| 734 | c1 = *p; |
| 735 | *p = NUL; |
| 736 | |
| 737 | n = (long)tv_get_number(tv); |
| 738 | s = tv_get_string_chk(tv); // != NULL if number or string |
| 739 | if (s != NULL && op != NULL && *op != '=') |
| 740 | { |
| 741 | opt_type = get_option_value(arg, &numval, |
| 742 | &stringval, opt_flags); |
| 743 | if ((opt_type == 1 && *op == '.') |
| 744 | || (opt_type == 0 && *op != '.')) |
| 745 | { |
| 746 | semsg(_(e_letwrong), op); |
| 747 | s = NULL; // don't set the value |
| 748 | } |
| 749 | else |
| 750 | { |
| 751 | if (opt_type == 1) // number |
| 752 | { |
| 753 | switch (*op) |
| 754 | { |
| 755 | case '+': n = numval + n; break; |
| 756 | case '-': n = numval - n; break; |
| 757 | case '*': n = numval * n; break; |
| 758 | case '/': n = (long)num_divide(numval, n); break; |
| 759 | case '%': n = (long)num_modulus(numval, n); break; |
| 760 | } |
| 761 | } |
| 762 | else if (opt_type == 0 && stringval != NULL) // string |
| 763 | { |
| 764 | s = concat_str(stringval, s); |
| 765 | vim_free(stringval); |
| 766 | stringval = s; |
| 767 | } |
| 768 | } |
| 769 | } |
| 770 | if (s != NULL) |
| 771 | { |
| 772 | set_option_value(arg, n, s, opt_flags); |
| 773 | arg_end = p; |
| 774 | } |
| 775 | *p = c1; |
| 776 | vim_free(stringval); |
| 777 | } |
| 778 | } |
| 779 | |
| 780 | // ":let @r = expr": Set register contents. |
| 781 | else if (*arg == '@') |
| 782 | { |
| 783 | if (is_const) |
| 784 | { |
| 785 | emsg(_("E996: Cannot lock a register")); |
| 786 | return NULL; |
| 787 | } |
| 788 | ++arg; |
| 789 | if (op != NULL && vim_strchr((char_u *)"+-*/%", *op) != NULL) |
| 790 | semsg(_(e_letwrong), op); |
| 791 | else if (endchars != NULL |
| 792 | && vim_strchr(endchars, *skipwhite(arg + 1)) == NULL) |
| 793 | emsg(_(e_letunexp)); |
| 794 | else |
| 795 | { |
| 796 | char_u *ptofree = NULL; |
| 797 | char_u *s; |
| 798 | |
| 799 | p = tv_get_string_chk(tv); |
| 800 | if (p != NULL && op != NULL && *op == '.') |
| 801 | { |
| 802 | s = get_reg_contents(*arg == '@' ? '"' : *arg, GREG_EXPR_SRC); |
| 803 | if (s != NULL) |
| 804 | { |
| 805 | p = ptofree = concat_str(s, p); |
| 806 | vim_free(s); |
| 807 | } |
| 808 | } |
| 809 | if (p != NULL) |
| 810 | { |
| 811 | write_reg_contents(*arg == '@' ? '"' : *arg, p, -1, FALSE); |
| 812 | arg_end = arg + 1; |
| 813 | } |
| 814 | vim_free(ptofree); |
| 815 | } |
| 816 | } |
| 817 | |
| 818 | // ":let var = expr": Set internal variable. |
| 819 | // ":let {expr} = expr": Idem, name made with curly braces |
| 820 | else if (eval_isnamec1(*arg) || *arg == '{') |
| 821 | { |
| 822 | lval_T lv; |
| 823 | |
| 824 | p = get_lval(arg, tv, &lv, FALSE, FALSE, 0, FNE_CHECK_START); |
| 825 | if (p != NULL && lv.ll_name != NULL) |
| 826 | { |
| 827 | if (endchars != NULL && vim_strchr(endchars, *skipwhite(p)) == NULL) |
| 828 | emsg(_(e_letunexp)); |
| 829 | else |
| 830 | { |
| 831 | set_var_lval(&lv, p, tv, copy, is_const, op); |
| 832 | arg_end = p; |
| 833 | } |
| 834 | } |
| 835 | clear_lval(&lv); |
| 836 | } |
| 837 | |
| 838 | else |
| 839 | semsg(_(e_invarg2), arg); |
| 840 | |
| 841 | return arg_end; |
| 842 | } |
| 843 | |
| 844 | /* |
| 845 | * ":unlet[!] var1 ... " command. |
| 846 | */ |
| 847 | void |
| 848 | ex_unlet(exarg_T *eap) |
| 849 | { |
| 850 | ex_unletlock(eap, eap->arg, 0); |
| 851 | } |
| 852 | |
| 853 | /* |
| 854 | * ":lockvar" and ":unlockvar" commands |
| 855 | */ |
| 856 | void |
| 857 | ex_lockvar(exarg_T *eap) |
| 858 | { |
| 859 | char_u *arg = eap->arg; |
| 860 | int deep = 2; |
| 861 | |
| 862 | if (eap->forceit) |
| 863 | deep = -1; |
| 864 | else if (vim_isdigit(*arg)) |
| 865 | { |
| 866 | deep = getdigits(&arg); |
| 867 | arg = skipwhite(arg); |
| 868 | } |
| 869 | |
| 870 | ex_unletlock(eap, arg, deep); |
| 871 | } |
| 872 | |
| 873 | /* |
| 874 | * ":unlet", ":lockvar" and ":unlockvar" are quite similar. |
| 875 | */ |
| 876 | static void |
| 877 | ex_unletlock( |
| 878 | exarg_T *eap, |
| 879 | char_u *argstart, |
| 880 | int deep) |
| 881 | { |
| 882 | char_u *arg = argstart; |
| 883 | char_u *name_end; |
| 884 | int error = FALSE; |
| 885 | lval_T lv; |
| 886 | |
| 887 | do |
| 888 | { |
| 889 | if (*arg == '$') |
| 890 | { |
| 891 | char_u *name = ++arg; |
| 892 | |
| 893 | if (get_env_len(&arg) == 0) |
| 894 | { |
| 895 | semsg(_(e_invarg2), name - 1); |
| 896 | return; |
| 897 | } |
| 898 | vim_unsetenv(name); |
| 899 | arg = skipwhite(arg); |
| 900 | continue; |
| 901 | } |
| 902 | |
| 903 | // Parse the name and find the end. |
| 904 | name_end = get_lval(arg, NULL, &lv, TRUE, eap->skip || error, 0, |
| 905 | FNE_CHECK_START); |
| 906 | if (lv.ll_name == NULL) |
| 907 | error = TRUE; // error but continue parsing |
| 908 | if (name_end == NULL || (!VIM_ISWHITE(*name_end) |
| 909 | && !ends_excmd(*name_end))) |
| 910 | { |
| 911 | if (name_end != NULL) |
| 912 | { |
| 913 | emsg_severe = TRUE; |
| 914 | emsg(_(e_trailing)); |
| 915 | } |
| 916 | if (!(eap->skip || error)) |
| 917 | clear_lval(&lv); |
| 918 | break; |
| 919 | } |
| 920 | |
| 921 | if (!error && !eap->skip) |
| 922 | { |
| 923 | if (eap->cmdidx == CMD_unlet) |
| 924 | { |
| 925 | if (do_unlet_var(&lv, name_end, eap->forceit) == FAIL) |
| 926 | error = TRUE; |
| 927 | } |
| 928 | else |
| 929 | { |
| 930 | if (do_lock_var(&lv, name_end, deep, |
| 931 | eap->cmdidx == CMD_lockvar) == FAIL) |
| 932 | error = TRUE; |
| 933 | } |
| 934 | } |
| 935 | |
| 936 | if (!eap->skip) |
| 937 | clear_lval(&lv); |
| 938 | |
| 939 | arg = skipwhite(name_end); |
| 940 | } while (!ends_excmd(*arg)); |
| 941 | |
| 942 | eap->nextcmd = check_nextcmd(arg); |
| 943 | } |
| 944 | |
| 945 | static int |
| 946 | do_unlet_var( |
| 947 | lval_T *lp, |
| 948 | char_u *name_end, |
| 949 | int forceit) |
| 950 | { |
| 951 | int ret = OK; |
| 952 | int cc; |
| 953 | |
| 954 | if (lp->ll_tv == NULL) |
| 955 | { |
| 956 | cc = *name_end; |
| 957 | *name_end = NUL; |
| 958 | |
| 959 | // Normal name or expanded name. |
| 960 | if (do_unlet(lp->ll_name, forceit) == FAIL) |
| 961 | ret = FAIL; |
| 962 | *name_end = cc; |
| 963 | } |
| 964 | else if ((lp->ll_list != NULL |
| 965 | && var_check_lock(lp->ll_list->lv_lock, lp->ll_name, FALSE)) |
| 966 | || (lp->ll_dict != NULL |
| 967 | && var_check_lock(lp->ll_dict->dv_lock, lp->ll_name, FALSE))) |
| 968 | return FAIL; |
| 969 | else if (lp->ll_range) |
| 970 | { |
| 971 | listitem_T *li; |
| 972 | listitem_T *ll_li = lp->ll_li; |
| 973 | int ll_n1 = lp->ll_n1; |
| 974 | |
| 975 | while (ll_li != NULL && (lp->ll_empty2 || lp->ll_n2 >= ll_n1)) |
| 976 | { |
| 977 | li = ll_li->li_next; |
| 978 | if (var_check_lock(ll_li->li_tv.v_lock, lp->ll_name, FALSE)) |
| 979 | return FAIL; |
| 980 | ll_li = li; |
| 981 | ++ll_n1; |
| 982 | } |
| 983 | |
| 984 | // Delete a range of List items. |
| 985 | while (lp->ll_li != NULL && (lp->ll_empty2 || lp->ll_n2 >= lp->ll_n1)) |
| 986 | { |
| 987 | li = lp->ll_li->li_next; |
| 988 | listitem_remove(lp->ll_list, lp->ll_li); |
| 989 | lp->ll_li = li; |
| 990 | ++lp->ll_n1; |
| 991 | } |
| 992 | } |
| 993 | else |
| 994 | { |
| 995 | if (lp->ll_list != NULL) |
| 996 | // unlet a List item. |
| 997 | listitem_remove(lp->ll_list, lp->ll_li); |
| 998 | else |
| 999 | // unlet a Dictionary item. |
| 1000 | dictitem_remove(lp->ll_dict, lp->ll_di); |
| 1001 | } |
| 1002 | |
| 1003 | return ret; |
| 1004 | } |
| 1005 | |
| 1006 | /* |
| 1007 | * "unlet" a variable. Return OK if it existed, FAIL if not. |
| 1008 | * When "forceit" is TRUE don't complain if the variable doesn't exist. |
| 1009 | */ |
| 1010 | int |
| 1011 | do_unlet(char_u *name, int forceit) |
| 1012 | { |
| 1013 | hashtab_T *ht; |
| 1014 | hashitem_T *hi; |
| 1015 | char_u *varname; |
| 1016 | dict_T *d; |
| 1017 | dictitem_T *di; |
| 1018 | |
| 1019 | ht = find_var_ht(name, &varname); |
| 1020 | if (ht != NULL && *varname != NUL) |
| 1021 | { |
| 1022 | d = get_current_funccal_dict(ht); |
| 1023 | if (d == NULL) |
| 1024 | { |
| 1025 | if (ht == &globvarht) |
| 1026 | d = &globvardict; |
| 1027 | else if (is_compatht(ht)) |
| 1028 | d = &vimvardict; |
| 1029 | else |
| 1030 | { |
| 1031 | di = find_var_in_ht(ht, *name, (char_u *)"", FALSE); |
| 1032 | d = di == NULL ? NULL : di->di_tv.vval.v_dict; |
| 1033 | } |
| 1034 | if (d == NULL) |
| 1035 | { |
| 1036 | internal_error("do_unlet()"); |
| 1037 | return FAIL; |
| 1038 | } |
| 1039 | } |
| 1040 | hi = hash_find(ht, varname); |
| 1041 | if (HASHITEM_EMPTY(hi)) |
| 1042 | hi = find_hi_in_scoped_ht(name, &ht); |
| 1043 | if (hi != NULL && !HASHITEM_EMPTY(hi)) |
| 1044 | { |
| 1045 | di = HI2DI(hi); |
| 1046 | if (var_check_fixed(di->di_flags, name, FALSE) |
| 1047 | || var_check_ro(di->di_flags, name, FALSE) |
| 1048 | || var_check_lock(d->dv_lock, name, FALSE)) |
| 1049 | return FAIL; |
| 1050 | |
| 1051 | delete_var(ht, hi); |
| 1052 | return OK; |
| 1053 | } |
| 1054 | } |
| 1055 | if (forceit) |
| 1056 | return OK; |
| 1057 | semsg(_("E108: No such variable: \"%s\""), name); |
| 1058 | return FAIL; |
| 1059 | } |
| 1060 | |
| 1061 | /* |
| 1062 | * Lock or unlock variable indicated by "lp". |
| 1063 | * "deep" is the levels to go (-1 for unlimited); |
| 1064 | * "lock" is TRUE for ":lockvar", FALSE for ":unlockvar". |
| 1065 | */ |
| 1066 | static int |
| 1067 | do_lock_var( |
| 1068 | lval_T *lp, |
| 1069 | char_u *name_end, |
| 1070 | int deep, |
| 1071 | int lock) |
| 1072 | { |
| 1073 | int ret = OK; |
| 1074 | int cc; |
| 1075 | dictitem_T *di; |
| 1076 | |
| 1077 | if (deep == 0) // nothing to do |
| 1078 | return OK; |
| 1079 | |
| 1080 | if (lp->ll_tv == NULL) |
| 1081 | { |
| 1082 | cc = *name_end; |
| 1083 | *name_end = NUL; |
| 1084 | |
| 1085 | // Normal name or expanded name. |
| 1086 | di = find_var(lp->ll_name, NULL, TRUE); |
| 1087 | if (di == NULL) |
| 1088 | ret = FAIL; |
| 1089 | else if ((di->di_flags & DI_FLAGS_FIX) |
| 1090 | && di->di_tv.v_type != VAR_DICT |
| 1091 | && di->di_tv.v_type != VAR_LIST) |
| 1092 | // For historic reasons this error is not given for a list or dict. |
| 1093 | // E.g., the b: dict could be locked/unlocked. |
| 1094 | semsg(_("E940: Cannot lock or unlock variable %s"), lp->ll_name); |
| 1095 | else |
| 1096 | { |
| 1097 | if (lock) |
| 1098 | di->di_flags |= DI_FLAGS_LOCK; |
| 1099 | else |
| 1100 | di->di_flags &= ~DI_FLAGS_LOCK; |
| 1101 | item_lock(&di->di_tv, deep, lock); |
| 1102 | } |
| 1103 | *name_end = cc; |
| 1104 | } |
| 1105 | else if (lp->ll_range) |
| 1106 | { |
| 1107 | listitem_T *li = lp->ll_li; |
| 1108 | |
| 1109 | // (un)lock a range of List items. |
| 1110 | while (li != NULL && (lp->ll_empty2 || lp->ll_n2 >= lp->ll_n1)) |
| 1111 | { |
| 1112 | item_lock(&li->li_tv, deep, lock); |
| 1113 | li = li->li_next; |
| 1114 | ++lp->ll_n1; |
| 1115 | } |
| 1116 | } |
| 1117 | else if (lp->ll_list != NULL) |
| 1118 | // (un)lock a List item. |
| 1119 | item_lock(&lp->ll_li->li_tv, deep, lock); |
| 1120 | else |
| 1121 | // (un)lock a Dictionary item. |
| 1122 | item_lock(&lp->ll_di->di_tv, deep, lock); |
| 1123 | |
| 1124 | return ret; |
| 1125 | } |
| 1126 | |
| 1127 | /* |
| 1128 | * Lock or unlock an item. "deep" is nr of levels to go. |
| 1129 | */ |
| 1130 | static void |
| 1131 | item_lock(typval_T *tv, int deep, int lock) |
| 1132 | { |
| 1133 | static int recurse = 0; |
| 1134 | list_T *l; |
| 1135 | listitem_T *li; |
| 1136 | dict_T *d; |
| 1137 | blob_T *b; |
| 1138 | hashitem_T *hi; |
| 1139 | int todo; |
| 1140 | |
| 1141 | if (recurse >= DICT_MAXNEST) |
| 1142 | { |
| 1143 | emsg(_("E743: variable nested too deep for (un)lock")); |
| 1144 | return; |
| 1145 | } |
| 1146 | if (deep == 0) |
| 1147 | return; |
| 1148 | ++recurse; |
| 1149 | |
| 1150 | // lock/unlock the item itself |
| 1151 | if (lock) |
| 1152 | tv->v_lock |= VAR_LOCKED; |
| 1153 | else |
| 1154 | tv->v_lock &= ~VAR_LOCKED; |
| 1155 | |
| 1156 | switch (tv->v_type) |
| 1157 | { |
| 1158 | case VAR_UNKNOWN: |
| 1159 | case VAR_NUMBER: |
| 1160 | case VAR_STRING: |
| 1161 | case VAR_FUNC: |
| 1162 | case VAR_PARTIAL: |
| 1163 | case VAR_FLOAT: |
| 1164 | case VAR_SPECIAL: |
| 1165 | case VAR_JOB: |
| 1166 | case VAR_CHANNEL: |
| 1167 | break; |
| 1168 | |
| 1169 | case VAR_BLOB: |
| 1170 | if ((b = tv->vval.v_blob) != NULL) |
| 1171 | { |
| 1172 | if (lock) |
| 1173 | b->bv_lock |= VAR_LOCKED; |
| 1174 | else |
| 1175 | b->bv_lock &= ~VAR_LOCKED; |
| 1176 | } |
| 1177 | break; |
| 1178 | case VAR_LIST: |
| 1179 | if ((l = tv->vval.v_list) != NULL) |
| 1180 | { |
| 1181 | if (lock) |
| 1182 | l->lv_lock |= VAR_LOCKED; |
| 1183 | else |
| 1184 | l->lv_lock &= ~VAR_LOCKED; |
| 1185 | if (deep < 0 || deep > 1) |
| 1186 | // recursive: lock/unlock the items the List contains |
| 1187 | for (li = l->lv_first; li != NULL; li = li->li_next) |
| 1188 | item_lock(&li->li_tv, deep - 1, lock); |
| 1189 | } |
| 1190 | break; |
| 1191 | case VAR_DICT: |
| 1192 | if ((d = tv->vval.v_dict) != NULL) |
| 1193 | { |
| 1194 | if (lock) |
| 1195 | d->dv_lock |= VAR_LOCKED; |
| 1196 | else |
| 1197 | d->dv_lock &= ~VAR_LOCKED; |
| 1198 | if (deep < 0 || deep > 1) |
| 1199 | { |
| 1200 | // recursive: lock/unlock the items the List contains |
| 1201 | todo = (int)d->dv_hashtab.ht_used; |
| 1202 | for (hi = d->dv_hashtab.ht_array; todo > 0; ++hi) |
| 1203 | { |
| 1204 | if (!HASHITEM_EMPTY(hi)) |
| 1205 | { |
| 1206 | --todo; |
| 1207 | item_lock(&HI2DI(hi)->di_tv, deep - 1, lock); |
| 1208 | } |
| 1209 | } |
| 1210 | } |
| 1211 | } |
| 1212 | } |
| 1213 | --recurse; |
| 1214 | } |
| 1215 | |
| 1216 | /* |
| 1217 | * Get the value of internal variable "name". |
| 1218 | * Return OK or FAIL. If OK is returned "rettv" must be cleared. |
| 1219 | */ |
| 1220 | int |
| 1221 | get_var_tv( |
| 1222 | char_u *name, |
| 1223 | int len, // length of "name" |
| 1224 | typval_T *rettv, // NULL when only checking existence |
| 1225 | dictitem_T **dip, // non-NULL when typval's dict item is needed |
| 1226 | int verbose, // may give error message |
| 1227 | int no_autoload) // do not use script autoloading |
| 1228 | { |
| 1229 | int ret = OK; |
| 1230 | typval_T *tv = NULL; |
| 1231 | dictitem_T *v; |
| 1232 | int cc; |
| 1233 | |
| 1234 | // truncate the name, so that we can use strcmp() |
| 1235 | cc = name[len]; |
| 1236 | name[len] = NUL; |
| 1237 | |
| 1238 | // Check for user-defined variables. |
| 1239 | v = find_var(name, NULL, no_autoload); |
| 1240 | if (v != NULL) |
| 1241 | { |
| 1242 | tv = &v->di_tv; |
| 1243 | if (dip != NULL) |
| 1244 | *dip = v; |
| 1245 | } |
| 1246 | |
| 1247 | if (tv == NULL) |
| 1248 | { |
| 1249 | if (rettv != NULL && verbose) |
| 1250 | semsg(_(e_undefvar), name); |
| 1251 | ret = FAIL; |
| 1252 | } |
| 1253 | else if (rettv != NULL) |
| 1254 | copy_tv(tv, rettv); |
| 1255 | |
| 1256 | name[len] = cc; |
| 1257 | |
| 1258 | return ret; |
| 1259 | } |
| 1260 | |
| 1261 | /* |
| 1262 | * Get the string value of a (global/local) variable. |
| 1263 | * Note: see tv_get_string() for how long the pointer remains valid. |
| 1264 | * Returns NULL when it doesn't exist. |
| 1265 | */ |
| 1266 | char_u * |
| 1267 | get_var_value(char_u *name) |
| 1268 | { |
| 1269 | dictitem_T *v; |
| 1270 | |
| 1271 | v = find_var(name, NULL, FALSE); |
| 1272 | if (v == NULL) |
| 1273 | return NULL; |
| 1274 | return tv_get_string(&v->di_tv); |
| 1275 | } |
| 1276 | |
| 1277 | /* |
| 1278 | * Clean up a list of internal variables. |
| 1279 | * Frees all allocated variables and the value they contain. |
| 1280 | * Clears hashtab "ht", does not free it. |
| 1281 | */ |
| 1282 | void |
| 1283 | vars_clear(hashtab_T *ht) |
| 1284 | { |
| 1285 | vars_clear_ext(ht, TRUE); |
| 1286 | } |
| 1287 | |
| 1288 | /* |
| 1289 | * Like vars_clear(), but only free the value if "free_val" is TRUE. |
| 1290 | */ |
| 1291 | void |
| 1292 | vars_clear_ext(hashtab_T *ht, int free_val) |
| 1293 | { |
| 1294 | int todo; |
| 1295 | hashitem_T *hi; |
| 1296 | dictitem_T *v; |
| 1297 | |
| 1298 | hash_lock(ht); |
| 1299 | todo = (int)ht->ht_used; |
| 1300 | for (hi = ht->ht_array; todo > 0; ++hi) |
| 1301 | { |
| 1302 | if (!HASHITEM_EMPTY(hi)) |
| 1303 | { |
| 1304 | --todo; |
| 1305 | |
| 1306 | // Free the variable. Don't remove it from the hashtab, |
| 1307 | // ht_array might change then. hash_clear() takes care of it |
| 1308 | // later. |
| 1309 | v = HI2DI(hi); |
| 1310 | if (free_val) |
| 1311 | clear_tv(&v->di_tv); |
| 1312 | if (v->di_flags & DI_FLAGS_ALLOC) |
| 1313 | vim_free(v); |
| 1314 | } |
| 1315 | } |
| 1316 | hash_clear(ht); |
| 1317 | ht->ht_used = 0; |
| 1318 | } |
| 1319 | |
| 1320 | /* |
| 1321 | * Delete a variable from hashtab "ht" at item "hi". |
| 1322 | * Clear the variable value and free the dictitem. |
| 1323 | */ |
| 1324 | void |
| 1325 | delete_var(hashtab_T *ht, hashitem_T *hi) |
| 1326 | { |
| 1327 | dictitem_T *di = HI2DI(hi); |
| 1328 | |
| 1329 | hash_remove(ht, hi); |
| 1330 | clear_tv(&di->di_tv); |
| 1331 | vim_free(di); |
| 1332 | } |
| 1333 | |
| 1334 | /* |
| 1335 | * List the value of one internal variable. |
| 1336 | */ |
| 1337 | static void |
| 1338 | list_one_var(dictitem_T *v, char *prefix, int *first) |
| 1339 | { |
| 1340 | char_u *tofree; |
| 1341 | char_u *s; |
| 1342 | char_u numbuf[NUMBUFLEN]; |
| 1343 | |
| 1344 | s = echo_string(&v->di_tv, &tofree, numbuf, get_copyID()); |
| 1345 | list_one_var_a(prefix, v->di_key, v->di_tv.v_type, |
| 1346 | s == NULL ? (char_u *)"" : s, first); |
| 1347 | vim_free(tofree); |
| 1348 | } |
| 1349 | |
| 1350 | static void |
| 1351 | list_one_var_a( |
| 1352 | char *prefix, |
| 1353 | char_u *name, |
| 1354 | int type, |
| 1355 | char_u *string, |
| 1356 | int *first) // when TRUE clear rest of screen and set to FALSE |
| 1357 | { |
| 1358 | // don't use msg() or msg_attr() to avoid overwriting "v:statusmsg" |
| 1359 | msg_start(); |
| 1360 | msg_puts(prefix); |
| 1361 | if (name != NULL) // "a:" vars don't have a name stored |
| 1362 | msg_puts((char *)name); |
| 1363 | msg_putchar(' '); |
| 1364 | msg_advance(22); |
| 1365 | if (type == VAR_NUMBER) |
| 1366 | msg_putchar('#'); |
| 1367 | else if (type == VAR_FUNC || type == VAR_PARTIAL) |
| 1368 | msg_putchar('*'); |
| 1369 | else if (type == VAR_LIST) |
| 1370 | { |
| 1371 | msg_putchar('['); |
| 1372 | if (*string == '[') |
| 1373 | ++string; |
| 1374 | } |
| 1375 | else if (type == VAR_DICT) |
| 1376 | { |
| 1377 | msg_putchar('{'); |
| 1378 | if (*string == '{') |
| 1379 | ++string; |
| 1380 | } |
| 1381 | else |
| 1382 | msg_putchar(' '); |
| 1383 | |
| 1384 | msg_outtrans(string); |
| 1385 | |
| 1386 | if (type == VAR_FUNC || type == VAR_PARTIAL) |
| 1387 | msg_puts("()"); |
| 1388 | if (*first) |
| 1389 | { |
| 1390 | msg_clr_eos(); |
| 1391 | *first = FALSE; |
| 1392 | } |
| 1393 | } |
| 1394 | |
| 1395 | /* |
| 1396 | * Set variable "name" to value in "tv". |
| 1397 | * If the variable already exists, the value is updated. |
| 1398 | * Otherwise the variable is created. |
| 1399 | */ |
| 1400 | void |
| 1401 | set_var( |
| 1402 | char_u *name, |
| 1403 | typval_T *tv, |
| 1404 | int copy) // make copy of value in "tv" |
| 1405 | { |
| 1406 | set_var_const(name, tv, copy, FALSE); |
| 1407 | } |
| 1408 | |
| 1409 | /* |
| 1410 | * Set variable "name" to value in "tv". |
| 1411 | * If the variable already exists and "is_const" is FALSE the value is updated. |
| 1412 | * Otherwise the variable is created. |
| 1413 | */ |
| 1414 | void |
| 1415 | set_var_const( |
| 1416 | char_u *name, |
| 1417 | typval_T *tv, |
| 1418 | int copy, // make copy of value in "tv" |
| 1419 | int is_const) // disallow to modify existing variable |
| 1420 | { |
| 1421 | dictitem_T *v; |
| 1422 | char_u *varname; |
| 1423 | hashtab_T *ht; |
| 1424 | |
| 1425 | ht = find_var_ht(name, &varname); |
| 1426 | if (ht == NULL || *varname == NUL) |
| 1427 | { |
| 1428 | semsg(_(e_illvar), name); |
| 1429 | return; |
| 1430 | } |
| 1431 | v = find_var_in_ht(ht, 0, varname, TRUE); |
| 1432 | |
| 1433 | // Search in parent scope which is possible to reference from lambda |
| 1434 | if (v == NULL) |
| 1435 | v = find_var_in_scoped_ht(name, TRUE); |
| 1436 | |
| 1437 | if ((tv->v_type == VAR_FUNC || tv->v_type == VAR_PARTIAL) |
| 1438 | && var_check_func_name(name, v == NULL)) |
| 1439 | return; |
| 1440 | |
| 1441 | if (v != NULL) |
| 1442 | { |
| 1443 | if (is_const) |
| 1444 | { |
| 1445 | emsg(_(e_cannot_mod)); |
| 1446 | return; |
| 1447 | } |
| 1448 | |
| 1449 | // existing variable, need to clear the value |
| 1450 | if (var_check_ro(v->di_flags, name, FALSE) |
| 1451 | || var_check_lock(v->di_tv.v_lock, name, FALSE)) |
| 1452 | return; |
| 1453 | |
| 1454 | // Handle setting internal v: variables separately where needed to |
| 1455 | // prevent changing the type. |
| 1456 | if (is_vimvarht(ht)) |
| 1457 | { |
| 1458 | if (v->di_tv.v_type == VAR_STRING) |
| 1459 | { |
| 1460 | VIM_CLEAR(v->di_tv.vval.v_string); |
| 1461 | if (copy || tv->v_type != VAR_STRING) |
| 1462 | { |
| 1463 | char_u *val = tv_get_string(tv); |
| 1464 | |
| 1465 | // Careful: when assigning to v:errmsg and tv_get_string() |
| 1466 | // causes an error message the variable will alrady be set. |
| 1467 | if (v->di_tv.vval.v_string == NULL) |
| 1468 | v->di_tv.vval.v_string = vim_strsave(val); |
| 1469 | } |
| 1470 | else |
| 1471 | { |
| 1472 | // Take over the string to avoid an extra alloc/free. |
| 1473 | v->di_tv.vval.v_string = tv->vval.v_string; |
| 1474 | tv->vval.v_string = NULL; |
| 1475 | } |
| 1476 | return; |
| 1477 | } |
| 1478 | else if (v->di_tv.v_type == VAR_NUMBER) |
| 1479 | { |
| 1480 | v->di_tv.vval.v_number = tv_get_number(tv); |
| 1481 | if (STRCMP(varname, "searchforward") == 0) |
| 1482 | set_search_direction(v->di_tv.vval.v_number ? '/' : '?'); |
| 1483 | #ifdef FEAT_SEARCH_EXTRA |
| 1484 | else if (STRCMP(varname, "hlsearch") == 0) |
| 1485 | { |
| 1486 | no_hlsearch = !v->di_tv.vval.v_number; |
| 1487 | redraw_all_later(SOME_VALID); |
| 1488 | } |
| 1489 | #endif |
| 1490 | return; |
| 1491 | } |
| 1492 | else if (v->di_tv.v_type != tv->v_type) |
| 1493 | { |
| 1494 | semsg(_("E963: setting %s to value with wrong type"), name); |
| 1495 | return; |
| 1496 | } |
| 1497 | } |
| 1498 | |
| 1499 | clear_tv(&v->di_tv); |
| 1500 | } |
| 1501 | else // add a new variable |
| 1502 | { |
| 1503 | // Can't add "v:" or "a:" variable. |
| 1504 | if (is_vimvarht(ht) || ht == get_funccal_args_ht()) |
| 1505 | { |
| 1506 | semsg(_(e_illvar), name); |
| 1507 | return; |
| 1508 | } |
| 1509 | |
| 1510 | // Make sure the variable name is valid. |
| 1511 | if (!valid_varname(varname)) |
| 1512 | return; |
| 1513 | |
| 1514 | v = alloc(sizeof(dictitem_T) + STRLEN(varname)); |
| 1515 | if (v == NULL) |
| 1516 | return; |
| 1517 | STRCPY(v->di_key, varname); |
| 1518 | if (hash_add(ht, DI2HIKEY(v)) == FAIL) |
| 1519 | { |
| 1520 | vim_free(v); |
| 1521 | return; |
| 1522 | } |
| 1523 | v->di_flags = DI_FLAGS_ALLOC; |
| 1524 | if (is_const) |
| 1525 | v->di_flags |= DI_FLAGS_LOCK; |
| 1526 | } |
| 1527 | |
| 1528 | if (copy || tv->v_type == VAR_NUMBER || tv->v_type == VAR_FLOAT) |
| 1529 | copy_tv(tv, &v->di_tv); |
| 1530 | else |
| 1531 | { |
| 1532 | v->di_tv = *tv; |
| 1533 | v->di_tv.v_lock = 0; |
| 1534 | init_tv(tv); |
| 1535 | } |
| 1536 | |
| 1537 | if (is_const) |
| 1538 | v->di_tv.v_lock |= VAR_LOCKED; |
| 1539 | } |
| 1540 | |
| 1541 | /* |
| 1542 | * Return TRUE if di_flags "flags" indicates variable "name" is read-only. |
| 1543 | * Also give an error message. |
| 1544 | */ |
| 1545 | int |
| 1546 | var_check_ro(int flags, char_u *name, int use_gettext) |
| 1547 | { |
| 1548 | if (flags & DI_FLAGS_RO) |
| 1549 | { |
| 1550 | semsg(_(e_readonlyvar), use_gettext ? (char_u *)_(name) : name); |
| 1551 | return TRUE; |
| 1552 | } |
| 1553 | if ((flags & DI_FLAGS_RO_SBX) && sandbox) |
| 1554 | { |
| 1555 | semsg(_(e_readonlysbx), use_gettext ? (char_u *)_(name) : name); |
| 1556 | return TRUE; |
| 1557 | } |
| 1558 | return FALSE; |
| 1559 | } |
| 1560 | |
| 1561 | /* |
| 1562 | * Return TRUE if di_flags "flags" indicates variable "name" is fixed. |
| 1563 | * Also give an error message. |
| 1564 | */ |
| 1565 | int |
| 1566 | var_check_fixed(int flags, char_u *name, int use_gettext) |
| 1567 | { |
| 1568 | if (flags & DI_FLAGS_FIX) |
| 1569 | { |
| 1570 | semsg(_("E795: Cannot delete variable %s"), |
| 1571 | use_gettext ? (char_u *)_(name) : name); |
| 1572 | return TRUE; |
| 1573 | } |
| 1574 | return FALSE; |
| 1575 | } |
| 1576 | |
| 1577 | /* |
| 1578 | * Check if a funcref is assigned to a valid variable name. |
| 1579 | * Return TRUE and give an error if not. |
| 1580 | */ |
| 1581 | int |
| 1582 | var_check_func_name( |
| 1583 | char_u *name, // points to start of variable name |
| 1584 | int new_var) // TRUE when creating the variable |
| 1585 | { |
| 1586 | // Allow for w: b: s: and t:. |
| 1587 | if (!(vim_strchr((char_u *)"wbst", name[0]) != NULL && name[1] == ':') |
| 1588 | && !ASCII_ISUPPER((name[0] != NUL && name[1] == ':') |
| 1589 | ? name[2] : name[0])) |
| 1590 | { |
| 1591 | semsg(_("E704: Funcref variable name must start with a capital: %s"), |
| 1592 | name); |
| 1593 | return TRUE; |
| 1594 | } |
| 1595 | // Don't allow hiding a function. When "v" is not NULL we might be |
| 1596 | // assigning another function to the same var, the type is checked |
| 1597 | // below. |
| 1598 | if (new_var && function_exists(name, FALSE)) |
| 1599 | { |
| 1600 | semsg(_("E705: Variable name conflicts with existing function: %s"), |
| 1601 | name); |
| 1602 | return TRUE; |
| 1603 | } |
| 1604 | return FALSE; |
| 1605 | } |
| 1606 | |
| 1607 | /* |
| 1608 | * Return TRUE if "flags" indicates variable "name" is locked (immutable). |
| 1609 | * Also give an error message, using "name" or _("name") when use_gettext is |
| 1610 | * TRUE. |
| 1611 | */ |
| 1612 | int |
| 1613 | var_check_lock(int lock, char_u *name, int use_gettext) |
| 1614 | { |
| 1615 | if (lock & VAR_LOCKED) |
| 1616 | { |
| 1617 | semsg(_("E741: Value is locked: %s"), |
| 1618 | name == NULL ? (char_u *)_("Unknown") |
| 1619 | : use_gettext ? (char_u *)_(name) |
| 1620 | : name); |
| 1621 | return TRUE; |
| 1622 | } |
| 1623 | if (lock & VAR_FIXED) |
| 1624 | { |
| 1625 | semsg(_("E742: Cannot change value of %s"), |
| 1626 | name == NULL ? (char_u *)_("Unknown") |
| 1627 | : use_gettext ? (char_u *)_(name) |
| 1628 | : name); |
| 1629 | return TRUE; |
| 1630 | } |
| 1631 | return FALSE; |
| 1632 | } |
| 1633 | |
| 1634 | /* |
| 1635 | * Check if a variable name is valid. |
| 1636 | * Return FALSE and give an error if not. |
| 1637 | */ |
| 1638 | int |
| 1639 | valid_varname(char_u *varname) |
| 1640 | { |
| 1641 | char_u *p; |
| 1642 | |
| 1643 | for (p = varname; *p != NUL; ++p) |
| 1644 | if (!eval_isnamec1(*p) && (p == varname || !VIM_ISDIGIT(*p)) |
| 1645 | && *p != AUTOLOAD_CHAR) |
| 1646 | { |
| 1647 | semsg(_(e_illvar), varname); |
| 1648 | return FALSE; |
| 1649 | } |
| 1650 | return TRUE; |
| 1651 | } |
| 1652 | |
| 1653 | /* |
| 1654 | * getwinvar() and gettabwinvar() |
| 1655 | */ |
| 1656 | static void |
| 1657 | getwinvar( |
| 1658 | typval_T *argvars, |
| 1659 | typval_T *rettv, |
| 1660 | int off) // 1 for gettabwinvar() |
| 1661 | { |
| 1662 | win_T *win; |
| 1663 | char_u *varname; |
| 1664 | dictitem_T *v; |
| 1665 | tabpage_T *tp = NULL; |
| 1666 | int done = FALSE; |
| 1667 | win_T *oldcurwin; |
| 1668 | tabpage_T *oldtabpage; |
| 1669 | int need_switch_win; |
| 1670 | |
| 1671 | if (off == 1) |
| 1672 | tp = find_tabpage((int)tv_get_number_chk(&argvars[0], NULL)); |
| 1673 | else |
| 1674 | tp = curtab; |
| 1675 | win = find_win_by_nr(&argvars[off], tp); |
| 1676 | varname = tv_get_string_chk(&argvars[off + 1]); |
| 1677 | ++emsg_off; |
| 1678 | |
| 1679 | rettv->v_type = VAR_STRING; |
| 1680 | rettv->vval.v_string = NULL; |
| 1681 | |
| 1682 | if (win != NULL && varname != NULL) |
| 1683 | { |
| 1684 | // Set curwin to be our win, temporarily. Also set the tabpage, |
| 1685 | // otherwise the window is not valid. Only do this when needed, |
| 1686 | // autocommands get blocked. |
| 1687 | need_switch_win = !(tp == curtab && win == curwin); |
| 1688 | if (!need_switch_win |
| 1689 | || switch_win(&oldcurwin, &oldtabpage, win, tp, TRUE) == OK) |
| 1690 | { |
| 1691 | if (*varname == '&') |
| 1692 | { |
| 1693 | if (varname[1] == NUL) |
| 1694 | { |
| 1695 | // get all window-local options in a dict |
| 1696 | dict_T *opts = get_winbuf_options(FALSE); |
| 1697 | |
| 1698 | if (opts != NULL) |
| 1699 | { |
| 1700 | rettv_dict_set(rettv, opts); |
| 1701 | done = TRUE; |
| 1702 | } |
| 1703 | } |
| 1704 | else if (get_option_tv(&varname, rettv, 1) == OK) |
| 1705 | // window-local-option |
| 1706 | done = TRUE; |
| 1707 | } |
| 1708 | else |
| 1709 | { |
| 1710 | // Look up the variable. |
| 1711 | // Let getwinvar({nr}, "") return the "w:" dictionary. |
| 1712 | v = find_var_in_ht(&win->w_vars->dv_hashtab, 'w', |
| 1713 | varname, FALSE); |
| 1714 | if (v != NULL) |
| 1715 | { |
| 1716 | copy_tv(&v->di_tv, rettv); |
| 1717 | done = TRUE; |
| 1718 | } |
| 1719 | } |
| 1720 | } |
| 1721 | |
| 1722 | if (need_switch_win) |
| 1723 | // restore previous notion of curwin |
| 1724 | restore_win(oldcurwin, oldtabpage, TRUE); |
| 1725 | } |
| 1726 | |
| 1727 | if (!done && argvars[off + 2].v_type != VAR_UNKNOWN) |
| 1728 | // use the default return value |
| 1729 | copy_tv(&argvars[off + 2], rettv); |
| 1730 | |
| 1731 | --emsg_off; |
| 1732 | } |
| 1733 | |
| 1734 | /* |
| 1735 | * "setwinvar()" and "settabwinvar()" functions |
| 1736 | */ |
| 1737 | static void |
| 1738 | setwinvar(typval_T *argvars, typval_T *rettv UNUSED, int off) |
| 1739 | { |
| 1740 | win_T *win; |
| 1741 | win_T *save_curwin; |
| 1742 | tabpage_T *save_curtab; |
| 1743 | int need_switch_win; |
| 1744 | char_u *varname, *winvarname; |
| 1745 | typval_T *varp; |
| 1746 | char_u nbuf[NUMBUFLEN]; |
| 1747 | tabpage_T *tp = NULL; |
| 1748 | |
| 1749 | if (check_secure()) |
| 1750 | return; |
| 1751 | |
| 1752 | if (off == 1) |
| 1753 | tp = find_tabpage((int)tv_get_number_chk(&argvars[0], NULL)); |
| 1754 | else |
| 1755 | tp = curtab; |
| 1756 | win = find_win_by_nr(&argvars[off], tp); |
| 1757 | varname = tv_get_string_chk(&argvars[off + 1]); |
| 1758 | varp = &argvars[off + 2]; |
| 1759 | |
| 1760 | if (win != NULL && varname != NULL && varp != NULL) |
| 1761 | { |
| 1762 | need_switch_win = !(tp == curtab && win == curwin); |
| 1763 | if (!need_switch_win |
| 1764 | || switch_win(&save_curwin, &save_curtab, win, tp, TRUE) == OK) |
| 1765 | { |
| 1766 | if (*varname == '&') |
| 1767 | { |
| 1768 | long numval; |
| 1769 | char_u *strval; |
| 1770 | int error = FALSE; |
| 1771 | |
| 1772 | ++varname; |
| 1773 | numval = (long)tv_get_number_chk(varp, &error); |
| 1774 | strval = tv_get_string_buf_chk(varp, nbuf); |
| 1775 | if (!error && strval != NULL) |
| 1776 | set_option_value(varname, numval, strval, OPT_LOCAL); |
| 1777 | } |
| 1778 | else |
| 1779 | { |
| 1780 | winvarname = alloc(STRLEN(varname) + 3); |
| 1781 | if (winvarname != NULL) |
| 1782 | { |
| 1783 | STRCPY(winvarname, "w:"); |
| 1784 | STRCPY(winvarname + 2, varname); |
| 1785 | set_var(winvarname, varp, TRUE); |
| 1786 | vim_free(winvarname); |
| 1787 | } |
| 1788 | } |
| 1789 | } |
| 1790 | if (need_switch_win) |
| 1791 | restore_win(save_curwin, save_curtab, TRUE); |
| 1792 | } |
| 1793 | } |
| 1794 | |
| 1795 | int |
| 1796 | var_exists(char_u *var) |
| 1797 | { |
| 1798 | char_u *name; |
| 1799 | char_u *tofree; |
| 1800 | typval_T tv; |
| 1801 | int len = 0; |
| 1802 | int n = FALSE; |
| 1803 | |
| 1804 | // get_name_len() takes care of expanding curly braces |
| 1805 | name = var; |
| 1806 | len = get_name_len(&var, &tofree, TRUE, FALSE); |
| 1807 | if (len > 0) |
| 1808 | { |
| 1809 | if (tofree != NULL) |
| 1810 | name = tofree; |
| 1811 | n = (get_var_tv(name, len, &tv, NULL, FALSE, TRUE) == OK); |
| 1812 | if (n) |
| 1813 | { |
| 1814 | // handle d.key, l[idx], f(expr) |
| 1815 | n = (handle_subscript(&var, &tv, TRUE, FALSE, name, &name) == OK); |
| 1816 | if (n) |
| 1817 | clear_tv(&tv); |
| 1818 | } |
| 1819 | } |
| 1820 | if (*var != NUL) |
| 1821 | n = FALSE; |
| 1822 | |
| 1823 | vim_free(tofree); |
| 1824 | return n; |
| 1825 | } |
| 1826 | |
| 1827 | /* |
| 1828 | * "gettabvar()" function |
| 1829 | */ |
| 1830 | void |
| 1831 | f_gettabvar(typval_T *argvars, typval_T *rettv) |
| 1832 | { |
| 1833 | win_T *oldcurwin; |
| 1834 | tabpage_T *tp, *oldtabpage; |
| 1835 | dictitem_T *v; |
| 1836 | char_u *varname; |
| 1837 | int done = FALSE; |
| 1838 | |
| 1839 | rettv->v_type = VAR_STRING; |
| 1840 | rettv->vval.v_string = NULL; |
| 1841 | |
| 1842 | varname = tv_get_string_chk(&argvars[1]); |
| 1843 | tp = find_tabpage((int)tv_get_number_chk(&argvars[0], NULL)); |
| 1844 | if (tp != NULL && varname != NULL) |
| 1845 | { |
| 1846 | // Set tp to be our tabpage, temporarily. Also set the window to the |
| 1847 | // first window in the tabpage, otherwise the window is not valid. |
| 1848 | if (switch_win(&oldcurwin, &oldtabpage, |
| 1849 | tp == curtab || tp->tp_firstwin == NULL ? firstwin |
| 1850 | : tp->tp_firstwin, tp, TRUE) == OK) |
| 1851 | { |
| 1852 | // look up the variable |
| 1853 | // Let gettabvar({nr}, "") return the "t:" dictionary. |
| 1854 | v = find_var_in_ht(&tp->tp_vars->dv_hashtab, 't', varname, FALSE); |
| 1855 | if (v != NULL) |
| 1856 | { |
| 1857 | copy_tv(&v->di_tv, rettv); |
| 1858 | done = TRUE; |
| 1859 | } |
| 1860 | } |
| 1861 | |
| 1862 | // restore previous notion of curwin |
| 1863 | restore_win(oldcurwin, oldtabpage, TRUE); |
| 1864 | } |
| 1865 | |
| 1866 | if (!done && argvars[2].v_type != VAR_UNKNOWN) |
| 1867 | copy_tv(&argvars[2], rettv); |
| 1868 | } |
| 1869 | |
| 1870 | /* |
| 1871 | * "gettabwinvar()" function |
| 1872 | */ |
| 1873 | void |
| 1874 | f_gettabwinvar(typval_T *argvars, typval_T *rettv) |
| 1875 | { |
| 1876 | getwinvar(argvars, rettv, 1); |
| 1877 | } |
| 1878 | |
| 1879 | /* |
| 1880 | * "getwinvar()" function |
| 1881 | */ |
| 1882 | void |
| 1883 | f_getwinvar(typval_T *argvars, typval_T *rettv) |
| 1884 | { |
| 1885 | getwinvar(argvars, rettv, 0); |
| 1886 | } |
| 1887 | |
| 1888 | /* |
| 1889 | * "settabvar()" function |
| 1890 | */ |
| 1891 | void |
| 1892 | f_settabvar(typval_T *argvars, typval_T *rettv) |
| 1893 | { |
| 1894 | tabpage_T *save_curtab; |
| 1895 | tabpage_T *tp; |
| 1896 | char_u *varname, *tabvarname; |
| 1897 | typval_T *varp; |
| 1898 | |
| 1899 | rettv->vval.v_number = 0; |
| 1900 | |
| 1901 | if (check_secure()) |
| 1902 | return; |
| 1903 | |
| 1904 | tp = find_tabpage((int)tv_get_number_chk(&argvars[0], NULL)); |
| 1905 | varname = tv_get_string_chk(&argvars[1]); |
| 1906 | varp = &argvars[2]; |
| 1907 | |
| 1908 | if (varname != NULL && varp != NULL && tp != NULL) |
| 1909 | { |
| 1910 | save_curtab = curtab; |
| 1911 | goto_tabpage_tp(tp, FALSE, FALSE); |
| 1912 | |
| 1913 | tabvarname = alloc(STRLEN(varname) + 3); |
| 1914 | if (tabvarname != NULL) |
| 1915 | { |
| 1916 | STRCPY(tabvarname, "t:"); |
| 1917 | STRCPY(tabvarname + 2, varname); |
| 1918 | set_var(tabvarname, varp, TRUE); |
| 1919 | vim_free(tabvarname); |
| 1920 | } |
| 1921 | |
| 1922 | // Restore current tabpage |
| 1923 | if (valid_tabpage(save_curtab)) |
| 1924 | goto_tabpage_tp(save_curtab, FALSE, FALSE); |
| 1925 | } |
| 1926 | } |
| 1927 | |
| 1928 | /* |
| 1929 | * "settabwinvar()" function |
| 1930 | */ |
| 1931 | void |
| 1932 | f_settabwinvar(typval_T *argvars, typval_T *rettv) |
| 1933 | { |
| 1934 | setwinvar(argvars, rettv, 1); |
| 1935 | } |
| 1936 | |
| 1937 | /* |
| 1938 | * "setwinvar()" function |
| 1939 | */ |
| 1940 | void |
| 1941 | f_setwinvar(typval_T *argvars, typval_T *rettv) |
| 1942 | { |
| 1943 | setwinvar(argvars, rettv, 0); |
| 1944 | } |
| 1945 | |
| 1946 | #endif // FEAT_EVAL |