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