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 * evalbuffer.c: Buffer related builtin functions 12 */ 13 14 #include "vim.h" 15 16 #if defined(FEAT_EVAL) || defined(PROTO) 17 /* 18 * Mark references in functions of buffers. 19 */ 20 int 21 set_ref_in_buffers(int copyID) 22 { 23 int abort = FALSE; 24 buf_T *bp; 25 26 FOR_ALL_BUFFERS(bp) 27 { 28 listener_T *lnr; 29 typval_T tv; 30 31 for (lnr = bp->b_listener; !abort && lnr != NULL; lnr = lnr->lr_next) 32 { 33 if (lnr->lr_callback.cb_partial != NULL) 34 { 35 tv.v_type = VAR_PARTIAL; 36 tv.vval.v_partial = lnr->lr_callback.cb_partial; 37 abort = abort || set_ref_in_item(&tv, copyID, NULL, NULL); 38 } 39 } 40 # ifdef FEAT_JOB_CHANNEL 41 if (!abort && bp->b_prompt_callback.cb_partial != NULL) 42 { 43 tv.v_type = VAR_PARTIAL; 44 tv.vval.v_partial = bp->b_prompt_callback.cb_partial; 45 abort = abort || set_ref_in_item(&tv, copyID, NULL, NULL); 46 } 47 if (!abort && bp->b_prompt_interrupt.cb_partial != NULL) 48 { 49 tv.v_type = VAR_PARTIAL; 50 tv.vval.v_partial = bp->b_prompt_interrupt.cb_partial; 51 abort = abort || set_ref_in_item(&tv, copyID, NULL, NULL); 52 } 53 # endif 54 if (abort) 55 break; 56 } 57 return abort; 58 } 59 60 buf_T * 61 buflist_find_by_name(char_u *name, int curtab_only) 62 { 63 int save_magic; 64 char_u *save_cpo; 65 buf_T *buf; 66 67 // Ignore 'magic' and 'cpoptions' here to make scripts portable 68 save_magic = p_magic; 69 p_magic = TRUE; 70 save_cpo = p_cpo; 71 p_cpo = empty_option; 72 73 buf = buflist_findnr(buflist_findpat(name, name + STRLEN(name), 74 TRUE, FALSE, curtab_only)); 75 76 p_magic = save_magic; 77 p_cpo = save_cpo; 78 return buf; 79 } 80 81 /* 82 * Find a buffer by number or exact name. 83 */ 84 buf_T * 85 find_buffer(typval_T *avar) 86 { 87 buf_T *buf = NULL; 88 89 if (avar->v_type == VAR_NUMBER) 90 buf = buflist_findnr((int)avar->vval.v_number); 91 else if (in_vim9script() && check_for_string_arg(avar, 0) == FAIL) 92 return NULL; 93 else if (avar->v_type == VAR_STRING && avar->vval.v_string != NULL) 94 { 95 buf = buflist_findname_exp(avar->vval.v_string); 96 if (buf == NULL) 97 { 98 // No full path name match, try a match with a URL or a "nofile" 99 // buffer, these don't use the full path. 100 FOR_ALL_BUFFERS(buf) 101 if (buf->b_fname != NULL 102 && (path_with_url(buf->b_fname) 103 #ifdef FEAT_QUICKFIX 104 || bt_nofilename(buf) 105 #endif 106 ) 107 && STRCMP(buf->b_fname, avar->vval.v_string) == 0) 108 break; 109 } 110 } 111 return buf; 112 } 113 114 /* 115 * If there is a window for "curbuf", make it the current window. 116 */ 117 static void 118 find_win_for_curbuf(void) 119 { 120 wininfo_T *wip; 121 122 FOR_ALL_BUF_WININFO(curbuf, wip) 123 { 124 if (wip->wi_win != NULL) 125 { 126 curwin = wip->wi_win; 127 break; 128 } 129 } 130 } 131 132 /* 133 * Set line or list of lines in buffer "buf" to "lines". 134 * Any type is allowed and converted to a string. 135 */ 136 static void 137 set_buffer_lines( 138 buf_T *buf, 139 linenr_T lnum_arg, 140 int append, 141 typval_T *lines, 142 typval_T *rettv) 143 { 144 linenr_T lnum = lnum_arg + (append ? 1 : 0); 145 char_u *line = NULL; 146 list_T *l = NULL; 147 listitem_T *li = NULL; 148 long added = 0; 149 linenr_T append_lnum; 150 buf_T *curbuf_save = NULL; 151 win_T *curwin_save = NULL; 152 int is_curbuf = buf == curbuf; 153 154 // When using the current buffer ml_mfp will be set if needed. Useful when 155 // setline() is used on startup. For other buffers the buffer must be 156 // loaded. 157 if (buf == NULL || (!is_curbuf && buf->b_ml.ml_mfp == NULL) || lnum < 1) 158 { 159 rettv->vval.v_number = 1; // FAIL 160 return; 161 } 162 163 if (!is_curbuf) 164 { 165 curbuf_save = curbuf; 166 curwin_save = curwin; 167 curbuf = buf; 168 find_win_for_curbuf(); 169 } 170 171 if (append) 172 // appendbufline() uses the line number below which we insert 173 append_lnum = lnum - 1; 174 else 175 // setbufline() uses the line number above which we insert, we only 176 // append if it's below the last line 177 append_lnum = curbuf->b_ml.ml_line_count; 178 179 if (lines->v_type == VAR_LIST) 180 { 181 l = lines->vval.v_list; 182 if (l == NULL || list_len(l) == 0) 183 { 184 // set proper return code 185 if (lnum > curbuf->b_ml.ml_line_count) 186 rettv->vval.v_number = 1; // FAIL 187 goto done; 188 } 189 CHECK_LIST_MATERIALIZE(l); 190 li = l->lv_first; 191 } 192 else 193 line = typval_tostring(lines, FALSE); 194 195 // default result is zero == OK 196 for (;;) 197 { 198 if (l != NULL) 199 { 200 // list argument, get next string 201 if (li == NULL) 202 break; 203 vim_free(line); 204 line = typval_tostring(&li->li_tv, FALSE); 205 li = li->li_next; 206 } 207 208 rettv->vval.v_number = 1; // FAIL 209 if (line == NULL || lnum > curbuf->b_ml.ml_line_count + 1) 210 break; 211 212 // When coming here from Insert mode, sync undo, so that this can be 213 // undone separately from what was previously inserted. 214 if (u_sync_once == 2) 215 { 216 u_sync_once = 1; // notify that u_sync() was called 217 u_sync(TRUE); 218 } 219 220 if (!append && lnum <= curbuf->b_ml.ml_line_count) 221 { 222 // Existing line, replace it. 223 // Removes any existing text properties. 224 if (u_savesub(lnum) == OK && ml_replace_len( 225 lnum, line, (colnr_T)STRLEN(line) + 1, TRUE, TRUE) == OK) 226 { 227 changed_bytes(lnum, 0); 228 if (is_curbuf && lnum == curwin->w_cursor.lnum) 229 check_cursor_col(); 230 rettv->vval.v_number = 0; // OK 231 } 232 } 233 else if (added > 0 || u_save(lnum - 1, lnum) == OK) 234 { 235 // append the line 236 ++added; 237 if (ml_append(lnum - 1, line, (colnr_T)0, FALSE) == OK) 238 rettv->vval.v_number = 0; // OK 239 } 240 241 if (l == NULL) // only one string argument 242 break; 243 ++lnum; 244 } 245 vim_free(line); 246 247 if (added > 0) 248 { 249 win_T *wp; 250 tabpage_T *tp; 251 252 appended_lines_mark(append_lnum, added); 253 254 // Only adjust the cursor for buffers other than the current, unless it 255 // is the current window. For curbuf and other windows it has been 256 // done in mark_adjust_internal(). 257 FOR_ALL_TAB_WINDOWS(tp, wp) 258 if (wp->w_buffer == buf 259 && (wp->w_buffer != curbuf || wp == curwin) 260 && wp->w_cursor.lnum > append_lnum) 261 wp->w_cursor.lnum += added; 262 check_cursor_col(); 263 update_topline(); 264 } 265 266 done: 267 if (!is_curbuf) 268 { 269 curbuf = curbuf_save; 270 curwin = curwin_save; 271 } 272 } 273 274 /* 275 * "append(lnum, string/list)" function 276 */ 277 void 278 f_append(typval_T *argvars, typval_T *rettv) 279 { 280 linenr_T lnum = tv_get_lnum(&argvars[0]); 281 282 set_buffer_lines(curbuf, lnum, TRUE, &argvars[1], rettv); 283 } 284 285 /* 286 * "appendbufline(buf, lnum, string/list)" function 287 */ 288 void 289 f_appendbufline(typval_T *argvars, typval_T *rettv) 290 { 291 linenr_T lnum; 292 buf_T *buf; 293 294 buf = tv_get_buf(&argvars[0], FALSE); 295 if (buf == NULL) 296 rettv->vval.v_number = 1; // FAIL 297 else 298 { 299 lnum = tv_get_lnum_buf(&argvars[1], buf); 300 set_buffer_lines(buf, lnum, TRUE, &argvars[2], rettv); 301 } 302 } 303 304 /* 305 * "bufadd(expr)" function 306 */ 307 void 308 f_bufadd(typval_T *argvars, typval_T *rettv) 309 { 310 char_u *name = tv_get_string(&argvars[0]); 311 312 rettv->vval.v_number = buflist_add(*name == NUL ? NULL : name, 0); 313 } 314 315 /* 316 * "bufexists(expr)" function 317 */ 318 void 319 f_bufexists(typval_T *argvars, typval_T *rettv) 320 { 321 rettv->vval.v_number = (find_buffer(&argvars[0]) != NULL); 322 } 323 324 /* 325 * "buflisted(expr)" function 326 */ 327 void 328 f_buflisted(typval_T *argvars, typval_T *rettv) 329 { 330 buf_T *buf; 331 332 buf = find_buffer(&argvars[0]); 333 rettv->vval.v_number = (buf != NULL && buf->b_p_bl); 334 } 335 336 /* 337 * "bufload(expr)" function 338 */ 339 void 340 f_bufload(typval_T *argvars, typval_T *rettv UNUSED) 341 { 342 buf_T *buf = get_buf_arg(&argvars[0]); 343 344 if (buf != NULL) 345 buffer_ensure_loaded(buf); 346 } 347 348 /* 349 * "bufloaded(expr)" function 350 */ 351 void 352 f_bufloaded(typval_T *argvars, typval_T *rettv) 353 { 354 buf_T *buf; 355 356 buf = find_buffer(&argvars[0]); 357 rettv->vval.v_number = (buf != NULL && buf->b_ml.ml_mfp != NULL); 358 } 359 360 /* 361 * "bufname(expr)" function 362 */ 363 void 364 f_bufname(typval_T *argvars, typval_T *rettv) 365 { 366 buf_T *buf; 367 typval_T *tv = &argvars[0]; 368 369 if (tv->v_type == VAR_UNKNOWN) 370 buf = curbuf; 371 else 372 buf = tv_get_buf_from_arg(tv); 373 rettv->v_type = VAR_STRING; 374 if (buf != NULL && buf->b_fname != NULL) 375 rettv->vval.v_string = vim_strsave(buf->b_fname); 376 else 377 rettv->vval.v_string = NULL; 378 } 379 380 /* 381 * "bufnr(expr)" function 382 */ 383 void 384 f_bufnr(typval_T *argvars, typval_T *rettv) 385 { 386 buf_T *buf; 387 int error = FALSE; 388 char_u *name; 389 390 if (in_vim9script() 391 && (check_for_opt_string_or_number_arg(argvars, 0) == FAIL 392 || (argvars[0].v_type != VAR_UNKNOWN 393 && check_for_opt_bool_arg(argvars, 1) == FAIL))) 394 return; 395 396 if (argvars[0].v_type == VAR_UNKNOWN) 397 buf = curbuf; 398 else 399 buf = tv_get_buf_from_arg(&argvars[0]); 400 401 // If the buffer isn't found and the second argument is not zero create a 402 // new buffer. 403 if (buf == NULL 404 && argvars[1].v_type != VAR_UNKNOWN 405 && tv_get_bool_chk(&argvars[1], &error) != 0 406 && !error 407 && (name = tv_get_string_chk(&argvars[0])) != NULL 408 && !error) 409 buf = buflist_new(name, NULL, (linenr_T)1, 0); 410 411 if (buf != NULL) 412 rettv->vval.v_number = buf->b_fnum; 413 else 414 rettv->vval.v_number = -1; 415 } 416 417 static void 418 buf_win_common(typval_T *argvars, typval_T *rettv, int get_nr) 419 { 420 win_T *wp; 421 int winnr = 0; 422 buf_T *buf; 423 424 buf = tv_get_buf_from_arg(&argvars[0]); 425 FOR_ALL_WINDOWS(wp) 426 { 427 ++winnr; 428 if (wp->w_buffer == buf) 429 break; 430 } 431 rettv->vval.v_number = (wp != NULL ? (get_nr ? winnr : wp->w_id) : -1); 432 } 433 434 /* 435 * "bufwinid(nr)" function 436 */ 437 void 438 f_bufwinid(typval_T *argvars, typval_T *rettv) 439 { 440 buf_win_common(argvars, rettv, FALSE); 441 } 442 443 /* 444 * "bufwinnr(nr)" function 445 */ 446 void 447 f_bufwinnr(typval_T *argvars, typval_T *rettv) 448 { 449 buf_win_common(argvars, rettv, TRUE); 450 } 451 452 /* 453 * "deletebufline()" function 454 */ 455 void 456 f_deletebufline(typval_T *argvars, typval_T *rettv) 457 { 458 buf_T *buf; 459 linenr_T first, last; 460 linenr_T lnum; 461 long count; 462 int is_curbuf; 463 buf_T *curbuf_save = NULL; 464 win_T *curwin_save = NULL; 465 tabpage_T *tp; 466 win_T *wp; 467 468 if (in_vim9script() 469 && (check_for_buffer_arg(argvars, 0) == FAIL 470 || check_for_lnum_arg(argvars, 1) == FAIL 471 || check_for_opt_lnum_arg(argvars, 2) == FAIL)) 472 return; 473 474 buf = tv_get_buf(&argvars[0], FALSE); 475 if (buf == NULL) 476 { 477 rettv->vval.v_number = 1; // FAIL 478 return; 479 } 480 is_curbuf = buf == curbuf; 481 482 first = tv_get_lnum_buf(&argvars[1], buf); 483 if (argvars[2].v_type != VAR_UNKNOWN) 484 last = tv_get_lnum_buf(&argvars[2], buf); 485 else 486 last = first; 487 488 if (buf->b_ml.ml_mfp == NULL || first < 1 489 || first > buf->b_ml.ml_line_count || last < first) 490 { 491 rettv->vval.v_number = 1; // FAIL 492 return; 493 } 494 495 if (!is_curbuf) 496 { 497 curbuf_save = curbuf; 498 curwin_save = curwin; 499 curbuf = buf; 500 find_win_for_curbuf(); 501 } 502 if (last > curbuf->b_ml.ml_line_count) 503 last = curbuf->b_ml.ml_line_count; 504 count = last - first + 1; 505 506 // When coming here from Insert mode, sync undo, so that this can be 507 // undone separately from what was previously inserted. 508 if (u_sync_once == 2) 509 { 510 u_sync_once = 1; // notify that u_sync() was called 511 u_sync(TRUE); 512 } 513 514 if (u_save(first - 1, last + 1) == FAIL) 515 { 516 rettv->vval.v_number = 1; // FAIL 517 } 518 else 519 { 520 for (lnum = first; lnum <= last; ++lnum) 521 ml_delete_flags(first, ML_DEL_MESSAGE); 522 523 FOR_ALL_TAB_WINDOWS(tp, wp) 524 if (wp->w_buffer == buf) 525 { 526 if (wp->w_cursor.lnum > last) 527 wp->w_cursor.lnum -= count; 528 else if (wp->w_cursor.lnum> first) 529 wp->w_cursor.lnum = first; 530 if (wp->w_cursor.lnum > wp->w_buffer->b_ml.ml_line_count) 531 wp->w_cursor.lnum = wp->w_buffer->b_ml.ml_line_count; 532 } 533 check_cursor_col(); 534 deleted_lines_mark(first, count); 535 } 536 537 if (!is_curbuf) 538 { 539 curbuf = curbuf_save; 540 curwin = curwin_save; 541 } 542 } 543 544 /* 545 * Returns buffer options, variables and other attributes in a dictionary. 546 */ 547 static dict_T * 548 get_buffer_info(buf_T *buf) 549 { 550 dict_T *dict; 551 tabpage_T *tp; 552 win_T *wp; 553 list_T *windows; 554 555 dict = dict_alloc(); 556 if (dict == NULL) 557 return NULL; 558 559 dict_add_number(dict, "bufnr", buf->b_fnum); 560 dict_add_string(dict, "name", buf->b_ffname); 561 dict_add_number(dict, "lnum", buf == curbuf ? curwin->w_cursor.lnum 562 : buflist_findlnum(buf)); 563 dict_add_number(dict, "linecount", buf->b_ml.ml_line_count); 564 dict_add_number(dict, "loaded", buf->b_ml.ml_mfp != NULL); 565 dict_add_number(dict, "listed", buf->b_p_bl); 566 dict_add_number(dict, "changed", bufIsChanged(buf)); 567 dict_add_number(dict, "changedtick", CHANGEDTICK(buf)); 568 dict_add_number(dict, "hidden", 569 buf->b_ml.ml_mfp != NULL && buf->b_nwindows == 0); 570 571 // Get a reference to buffer variables 572 dict_add_dict(dict, "variables", buf->b_vars); 573 574 // List of windows displaying this buffer 575 windows = list_alloc(); 576 if (windows != NULL) 577 { 578 FOR_ALL_TAB_WINDOWS(tp, wp) 579 if (wp->w_buffer == buf) 580 list_append_number(windows, (varnumber_T)wp->w_id); 581 dict_add_list(dict, "windows", windows); 582 } 583 584 #ifdef FEAT_PROP_POPUP 585 // List of popup windows displaying this buffer 586 windows = list_alloc(); 587 if (windows != NULL) 588 { 589 FOR_ALL_POPUPWINS(wp) 590 if (wp->w_buffer == buf) 591 list_append_number(windows, (varnumber_T)wp->w_id); 592 FOR_ALL_TABPAGES(tp) 593 FOR_ALL_POPUPWINS_IN_TAB(tp, wp) 594 if (wp->w_buffer == buf) 595 list_append_number(windows, (varnumber_T)wp->w_id); 596 597 dict_add_list(dict, "popups", windows); 598 } 599 #endif 600 601 #ifdef FEAT_SIGNS 602 if (buf->b_signlist != NULL) 603 { 604 // List of signs placed in this buffer 605 list_T *signs = list_alloc(); 606 if (signs != NULL) 607 { 608 get_buffer_signs(buf, signs); 609 dict_add_list(dict, "signs", signs); 610 } 611 } 612 #endif 613 614 #ifdef FEAT_VIMINFO 615 dict_add_number(dict, "lastused", buf->b_last_used); 616 #endif 617 618 return dict; 619 } 620 621 /* 622 * "getbufinfo()" function 623 */ 624 void 625 f_getbufinfo(typval_T *argvars, typval_T *rettv) 626 { 627 buf_T *buf = NULL; 628 buf_T *argbuf = NULL; 629 dict_T *d; 630 int filtered = FALSE; 631 int sel_buflisted = FALSE; 632 int sel_bufloaded = FALSE; 633 int sel_bufmodified = FALSE; 634 635 if (rettv_list_alloc(rettv) != OK) 636 return; 637 638 // List of all the buffers or selected buffers 639 if (argvars[0].v_type == VAR_DICT) 640 { 641 dict_T *sel_d = argvars[0].vval.v_dict; 642 643 if (sel_d != NULL) 644 { 645 filtered = TRUE; 646 sel_buflisted = dict_get_bool(sel_d, (char_u *)"buflisted", FALSE); 647 sel_bufloaded = dict_get_bool(sel_d, (char_u *)"bufloaded", FALSE); 648 sel_bufmodified = dict_get_bool(sel_d, (char_u *)"bufmodified", 649 FALSE); 650 } 651 } 652 else if (argvars[0].v_type != VAR_UNKNOWN) 653 { 654 // Information about one buffer. Argument specifies the buffer 655 argbuf = tv_get_buf_from_arg(&argvars[0]); 656 if (argbuf == NULL) 657 return; 658 } 659 660 // Return information about all the buffers or a specified buffer 661 FOR_ALL_BUFFERS(buf) 662 { 663 if (argbuf != NULL && argbuf != buf) 664 continue; 665 if (filtered && ((sel_bufloaded && buf->b_ml.ml_mfp == NULL) 666 || (sel_buflisted && !buf->b_p_bl) 667 || (sel_bufmodified && !buf->b_changed))) 668 continue; 669 670 d = get_buffer_info(buf); 671 if (d != NULL) 672 list_append_dict(rettv->vval.v_list, d); 673 if (argbuf != NULL) 674 return; 675 } 676 } 677 678 /* 679 * Get line or list of lines from buffer "buf" into "rettv". 680 * Return a range (from start to end) of lines in rettv from the specified 681 * buffer. 682 * If 'retlist' is TRUE, then the lines are returned as a Vim List. 683 */ 684 static void 685 get_buffer_lines( 686 buf_T *buf, 687 linenr_T start, 688 linenr_T end, 689 int retlist, 690 typval_T *rettv) 691 { 692 char_u *p; 693 694 if (retlist) 695 { 696 if (rettv_list_alloc(rettv) == FAIL) 697 return; 698 } 699 else 700 { 701 rettv->v_type = VAR_STRING; 702 rettv->vval.v_string = NULL; 703 } 704 705 if (buf == NULL || buf->b_ml.ml_mfp == NULL || start < 0) 706 return; 707 708 if (!retlist) 709 { 710 if (start >= 1 && start <= buf->b_ml.ml_line_count) 711 p = ml_get_buf(buf, start, FALSE); 712 else 713 p = (char_u *)""; 714 rettv->vval.v_string = vim_strsave(p); 715 } 716 else 717 { 718 if (end < start) 719 return; 720 721 if (start < 1) 722 start = 1; 723 if (end > buf->b_ml.ml_line_count) 724 end = buf->b_ml.ml_line_count; 725 while (start <= end) 726 if (list_append_string(rettv->vval.v_list, 727 ml_get_buf(buf, start++, FALSE), -1) == FAIL) 728 break; 729 } 730 } 731 732 /* 733 * "getbufline()" function 734 */ 735 void 736 f_getbufline(typval_T *argvars, typval_T *rettv) 737 { 738 linenr_T lnum = 1; 739 linenr_T end = 1; 740 buf_T *buf; 741 742 if (in_vim9script() 743 && (check_for_buffer_arg(argvars, 0) == FAIL 744 || check_for_lnum_arg(argvars, 1) == FAIL 745 || check_for_opt_lnum_arg(argvars, 2) == FAIL)) 746 return; 747 748 buf = tv_get_buf_from_arg(&argvars[0]); 749 if (buf != NULL) 750 { 751 lnum = tv_get_lnum_buf(&argvars[1], buf); 752 if (argvars[2].v_type == VAR_UNKNOWN) 753 end = lnum; 754 else 755 end = tv_get_lnum_buf(&argvars[2], buf); 756 } 757 758 get_buffer_lines(buf, lnum, end, TRUE, rettv); 759 } 760 761 type_T * 762 ret_f_getline(int argcount, type_T **argtypes UNUSED) 763 { 764 return argcount == 1 ? &t_string : &t_list_string; 765 } 766 767 /* 768 * "getline(lnum, [end])" function 769 */ 770 void 771 f_getline(typval_T *argvars, typval_T *rettv) 772 { 773 linenr_T lnum; 774 linenr_T end; 775 int retlist; 776 777 lnum = tv_get_lnum(argvars); 778 if (argvars[1].v_type == VAR_UNKNOWN) 779 { 780 end = 0; 781 retlist = FALSE; 782 } 783 else 784 { 785 end = tv_get_lnum(&argvars[1]); 786 retlist = TRUE; 787 } 788 789 get_buffer_lines(curbuf, lnum, end, retlist, rettv); 790 } 791 792 /* 793 * "setbufline()" function 794 */ 795 void 796 f_setbufline(typval_T *argvars, typval_T *rettv) 797 { 798 linenr_T lnum; 799 buf_T *buf; 800 801 buf = tv_get_buf(&argvars[0], FALSE); 802 if (buf == NULL) 803 rettv->vval.v_number = 1; // FAIL 804 else 805 { 806 lnum = tv_get_lnum_buf(&argvars[1], buf); 807 set_buffer_lines(buf, lnum, FALSE, &argvars[2], rettv); 808 } 809 } 810 811 /* 812 * "setline()" function 813 */ 814 void 815 f_setline(typval_T *argvars, typval_T *rettv) 816 { 817 linenr_T lnum = tv_get_lnum(&argvars[0]); 818 819 set_buffer_lines(curbuf, lnum, FALSE, &argvars[1], rettv); 820 } 821 #endif // FEAT_EVAL 822 823 #if defined(FEAT_JOB_CHANNEL) \ 824 || defined(FEAT_PYTHON) || defined(FEAT_PYTHON3) \ 825 || defined(PROTO) 826 /* 827 * Make "buf" the current buffer. restore_buffer() MUST be called to undo. 828 * No autocommands will be executed. Use aucmd_prepbuf() if there are any. 829 */ 830 void 831 switch_buffer(bufref_T *save_curbuf, buf_T *buf) 832 { 833 block_autocmds(); 834 #ifdef FEAT_FOLDING 835 ++disable_fold_update; 836 #endif 837 set_bufref(save_curbuf, curbuf); 838 --curbuf->b_nwindows; 839 curbuf = buf; 840 curwin->w_buffer = buf; 841 ++curbuf->b_nwindows; 842 } 843 844 /* 845 * Restore the current buffer after using switch_buffer(). 846 */ 847 void 848 restore_buffer(bufref_T *save_curbuf) 849 { 850 unblock_autocmds(); 851 #ifdef FEAT_FOLDING 852 --disable_fold_update; 853 #endif 854 // Check for valid buffer, just in case. 855 if (bufref_valid(save_curbuf)) 856 { 857 --curbuf->b_nwindows; 858 curwin->w_buffer = save_curbuf->br_buf; 859 curbuf = save_curbuf->br_buf; 860 ++curbuf->b_nwindows; 861 } 862 } 863 864 /* 865 * Find a window for buffer "buf". 866 * If found OK is returned and "wp" and "tp" are set to the window and tabpage. 867 * If not found FAIL is returned. 868 */ 869 static int 870 find_win_for_buf( 871 buf_T *buf, 872 win_T **wp, 873 tabpage_T **tp) 874 { 875 FOR_ALL_TAB_WINDOWS(*tp, *wp) 876 if ((*wp)->w_buffer == buf) 877 return OK; 878 return FAIL; 879 } 880 881 /* 882 * Find a window that contains "buf" and switch to it. 883 * If there is no such window, use the current window and change "curbuf". 884 * Caller must initialize save_curbuf to NULL. 885 * restore_win_for_buf() MUST be called later! 886 */ 887 void 888 switch_to_win_for_buf( 889 buf_T *buf, 890 win_T **save_curwinp, 891 tabpage_T **save_curtabp, 892 bufref_T *save_curbuf) 893 { 894 win_T *wp; 895 tabpage_T *tp; 896 897 if (find_win_for_buf(buf, &wp, &tp) == FAIL) 898 switch_buffer(save_curbuf, buf); 899 else if (switch_win(save_curwinp, save_curtabp, wp, tp, TRUE) == FAIL) 900 { 901 restore_win(*save_curwinp, *save_curtabp, TRUE); 902 switch_buffer(save_curbuf, buf); 903 } 904 } 905 906 void 907 restore_win_for_buf( 908 win_T *save_curwin, 909 tabpage_T *save_curtab, 910 bufref_T *save_curbuf) 911 { 912 if (save_curbuf->br_buf == NULL) 913 restore_win(save_curwin, save_curtab, TRUE); 914 else 915 restore_buffer(save_curbuf); 916 } 917 #endif 918