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 * misc1.c: functions that didn't seem to fit elsewhere 12 */ 13 14 #include "vim.h" 15 #include "version.h" 16 17 #if defined(__HAIKU__) 18 # include <storage/FindDirectory.h> 19 #endif 20 21 #if defined(MSWIN) 22 # include <lm.h> 23 #endif 24 25 #define URL_SLASH 1 // path_is_url() has found "://" 26 #define URL_BACKSLASH 2 // path_is_url() has found ":\\" 27 28 // All user names (for ~user completion as done by shell). 29 static garray_T ga_users; 30 31 /* 32 * get_leader_len() returns the length in bytes of the prefix of the given 33 * string which introduces a comment. If this string is not a comment then 34 * 0 is returned. 35 * When "flags" is not NULL, it is set to point to the flags of the recognized 36 * comment leader. 37 * "backward" must be true for the "O" command. 38 * If "include_space" is set, include trailing whitespace while calculating the 39 * length. 40 */ 41 int 42 get_leader_len( 43 char_u *line, 44 char_u **flags, 45 int backward, 46 int include_space) 47 { 48 int i, j; 49 int result; 50 int got_com = FALSE; 51 int found_one; 52 char_u part_buf[COM_MAX_LEN]; // buffer for one option part 53 char_u *string; // pointer to comment string 54 char_u *list; 55 int middle_match_len = 0; 56 char_u *prev_list; 57 char_u *saved_flags = NULL; 58 59 result = i = 0; 60 while (VIM_ISWHITE(line[i])) // leading white space is ignored 61 ++i; 62 63 /* 64 * Repeat to match several nested comment strings. 65 */ 66 while (line[i] != NUL) 67 { 68 /* 69 * scan through the 'comments' option for a match 70 */ 71 found_one = FALSE; 72 for (list = curbuf->b_p_com; *list; ) 73 { 74 // Get one option part into part_buf[]. Advance "list" to next 75 // one. Put "string" at start of string. 76 if (!got_com && flags != NULL) 77 *flags = list; // remember where flags started 78 prev_list = list; 79 (void)copy_option_part(&list, part_buf, COM_MAX_LEN, ","); 80 string = vim_strchr(part_buf, ':'); 81 if (string == NULL) // missing ':', ignore this part 82 continue; 83 *string++ = NUL; // isolate flags from string 84 85 // If we found a middle match previously, use that match when this 86 // is not a middle or end. 87 if (middle_match_len != 0 88 && vim_strchr(part_buf, COM_MIDDLE) == NULL 89 && vim_strchr(part_buf, COM_END) == NULL) 90 break; 91 92 // When we already found a nested comment, only accept further 93 // nested comments. 94 if (got_com && vim_strchr(part_buf, COM_NEST) == NULL) 95 continue; 96 97 // When 'O' flag present and using "O" command skip this one. 98 if (backward && vim_strchr(part_buf, COM_NOBACK) != NULL) 99 continue; 100 101 // Line contents and string must match. 102 // When string starts with white space, must have some white space 103 // (but the amount does not need to match, there might be a mix of 104 // TABs and spaces). 105 if (VIM_ISWHITE(string[0])) 106 { 107 if (i == 0 || !VIM_ISWHITE(line[i - 1])) 108 continue; // missing white space 109 while (VIM_ISWHITE(string[0])) 110 ++string; 111 } 112 for (j = 0; string[j] != NUL && string[j] == line[i + j]; ++j) 113 ; 114 if (string[j] != NUL) 115 continue; // string doesn't match 116 117 // When 'b' flag used, there must be white space or an 118 // end-of-line after the string in the line. 119 if (vim_strchr(part_buf, COM_BLANK) != NULL 120 && !VIM_ISWHITE(line[i + j]) && line[i + j] != NUL) 121 continue; 122 123 // We have found a match, stop searching unless this is a middle 124 // comment. The middle comment can be a substring of the end 125 // comment in which case it's better to return the length of the 126 // end comment and its flags. Thus we keep searching with middle 127 // and end matches and use an end match if it matches better. 128 if (vim_strchr(part_buf, COM_MIDDLE) != NULL) 129 { 130 if (middle_match_len == 0) 131 { 132 middle_match_len = j; 133 saved_flags = prev_list; 134 } 135 continue; 136 } 137 if (middle_match_len != 0 && j > middle_match_len) 138 // Use this match instead of the middle match, since it's a 139 // longer thus better match. 140 middle_match_len = 0; 141 142 if (middle_match_len == 0) 143 i += j; 144 found_one = TRUE; 145 break; 146 } 147 148 if (middle_match_len != 0) 149 { 150 // Use the previously found middle match after failing to find a 151 // match with an end. 152 if (!got_com && flags != NULL) 153 *flags = saved_flags; 154 i += middle_match_len; 155 found_one = TRUE; 156 } 157 158 // No match found, stop scanning. 159 if (!found_one) 160 break; 161 162 result = i; 163 164 // Include any trailing white space. 165 while (VIM_ISWHITE(line[i])) 166 ++i; 167 168 if (include_space) 169 result = i; 170 171 // If this comment doesn't nest, stop here. 172 got_com = TRUE; 173 if (vim_strchr(part_buf, COM_NEST) == NULL) 174 break; 175 } 176 return result; 177 } 178 179 /* 180 * Return the offset at which the last comment in line starts. If there is no 181 * comment in the whole line, -1 is returned. 182 * 183 * When "flags" is not null, it is set to point to the flags describing the 184 * recognized comment leader. 185 */ 186 int 187 get_last_leader_offset(char_u *line, char_u **flags) 188 { 189 int result = -1; 190 int i, j; 191 int lower_check_bound = 0; 192 char_u *string; 193 char_u *com_leader; 194 char_u *com_flags; 195 char_u *list; 196 int found_one; 197 char_u part_buf[COM_MAX_LEN]; // buffer for one option part 198 199 /* 200 * Repeat to match several nested comment strings. 201 */ 202 i = (int)STRLEN(line); 203 while (--i >= lower_check_bound) 204 { 205 /* 206 * scan through the 'comments' option for a match 207 */ 208 found_one = FALSE; 209 for (list = curbuf->b_p_com; *list; ) 210 { 211 char_u *flags_save = list; 212 213 /* 214 * Get one option part into part_buf[]. Advance list to next one. 215 * put string at start of string. 216 */ 217 (void)copy_option_part(&list, part_buf, COM_MAX_LEN, ","); 218 string = vim_strchr(part_buf, ':'); 219 if (string == NULL) // If everything is fine, this cannot actually 220 // happen. 221 continue; 222 *string++ = NUL; // Isolate flags from string. 223 com_leader = string; 224 225 /* 226 * Line contents and string must match. 227 * When string starts with white space, must have some white space 228 * (but the amount does not need to match, there might be a mix of 229 * TABs and spaces). 230 */ 231 if (VIM_ISWHITE(string[0])) 232 { 233 if (i == 0 || !VIM_ISWHITE(line[i - 1])) 234 continue; 235 while (VIM_ISWHITE(*string)) 236 ++string; 237 } 238 for (j = 0; string[j] != NUL && string[j] == line[i + j]; ++j) 239 /* do nothing */; 240 if (string[j] != NUL) 241 continue; 242 243 /* 244 * When 'b' flag used, there must be white space or an 245 * end-of-line after the string in the line. 246 */ 247 if (vim_strchr(part_buf, COM_BLANK) != NULL 248 && !VIM_ISWHITE(line[i + j]) && line[i + j] != NUL) 249 continue; 250 251 if (vim_strchr(part_buf, COM_MIDDLE) != NULL) 252 { 253 // For a middlepart comment, only consider it to match if 254 // everything before the current position in the line is 255 // whitespace. Otherwise we would think we are inside a 256 // comment if the middle part appears somewhere in the middle 257 // of the line. E.g. for C the "*" appears often. 258 for (j = 0; VIM_ISWHITE(line[j]) && j <= i; j++) 259 ; 260 if (j < i) 261 continue; 262 } 263 264 /* 265 * We have found a match, stop searching. 266 */ 267 found_one = TRUE; 268 269 if (flags) 270 *flags = flags_save; 271 com_flags = flags_save; 272 273 break; 274 } 275 276 if (found_one) 277 { 278 char_u part_buf2[COM_MAX_LEN]; // buffer for one option part 279 int len1, len2, off; 280 281 result = i; 282 /* 283 * If this comment nests, continue searching. 284 */ 285 if (vim_strchr(part_buf, COM_NEST) != NULL) 286 continue; 287 288 lower_check_bound = i; 289 290 // Let's verify whether the comment leader found is a substring 291 // of other comment leaders. If it is, let's adjust the 292 // lower_check_bound so that we make sure that we have determined 293 // the comment leader correctly. 294 295 while (VIM_ISWHITE(*com_leader)) 296 ++com_leader; 297 len1 = (int)STRLEN(com_leader); 298 299 for (list = curbuf->b_p_com; *list; ) 300 { 301 char_u *flags_save = list; 302 303 (void)copy_option_part(&list, part_buf2, COM_MAX_LEN, ","); 304 if (flags_save == com_flags) 305 continue; 306 string = vim_strchr(part_buf2, ':'); 307 ++string; 308 while (VIM_ISWHITE(*string)) 309 ++string; 310 len2 = (int)STRLEN(string); 311 if (len2 == 0) 312 continue; 313 314 // Now we have to verify whether string ends with a substring 315 // beginning the com_leader. 316 for (off = (len2 > i ? i : len2); off > 0 && off + len1 > len2;) 317 { 318 --off; 319 if (!STRNCMP(string + off, com_leader, len2 - off)) 320 { 321 if (i - off < lower_check_bound) 322 lower_check_bound = i - off; 323 } 324 } 325 } 326 } 327 } 328 return result; 329 } 330 331 /* 332 * Return the number of window lines occupied by buffer line "lnum". 333 */ 334 int 335 plines(linenr_T lnum) 336 { 337 return plines_win(curwin, lnum, TRUE); 338 } 339 340 int 341 plines_win( 342 win_T *wp, 343 linenr_T lnum, 344 int winheight) // when TRUE limit to window height 345 { 346 #if defined(FEAT_DIFF) || defined(PROTO) 347 // Check for filler lines above this buffer line. When folded the result 348 // is one line anyway. 349 return plines_win_nofill(wp, lnum, winheight) + diff_check_fill(wp, lnum); 350 } 351 352 int 353 plines_nofill(linenr_T lnum) 354 { 355 return plines_win_nofill(curwin, lnum, TRUE); 356 } 357 358 int 359 plines_win_nofill( 360 win_T *wp, 361 linenr_T lnum, 362 int winheight) // when TRUE limit to window height 363 { 364 #endif 365 int lines; 366 367 if (!wp->w_p_wrap) 368 return 1; 369 370 if (wp->w_width == 0) 371 return 1; 372 373 #ifdef FEAT_FOLDING 374 // A folded lines is handled just like an empty line. 375 // NOTE: Caller must handle lines that are MAYBE folded. 376 if (lineFolded(wp, lnum) == TRUE) 377 return 1; 378 #endif 379 380 lines = plines_win_nofold(wp, lnum); 381 if (winheight > 0 && lines > wp->w_height) 382 return (int)wp->w_height; 383 return lines; 384 } 385 386 /* 387 * Return number of window lines physical line "lnum" will occupy in window 388 * "wp". Does not care about folding, 'wrap' or 'diff'. 389 */ 390 int 391 plines_win_nofold(win_T *wp, linenr_T lnum) 392 { 393 char_u *s; 394 long col; 395 int width; 396 397 s = ml_get_buf(wp->w_buffer, lnum, FALSE); 398 if (*s == NUL) // empty line 399 return 1; 400 col = win_linetabsize(wp, s, (colnr_T)MAXCOL); 401 402 /* 403 * If list mode is on, then the '$' at the end of the line may take up one 404 * extra column. 405 */ 406 if (wp->w_p_list && wp->w_lcs_chars.eol != NUL) 407 col += 1; 408 409 /* 410 * Add column offset for 'number', 'relativenumber' and 'foldcolumn'. 411 */ 412 width = wp->w_width - win_col_off(wp); 413 if (width <= 0) 414 return 32000; 415 if (col <= width) 416 return 1; 417 col -= width; 418 width += win_col_off2(wp); 419 return (col + (width - 1)) / width + 1; 420 } 421 422 /* 423 * Like plines_win(), but only reports the number of physical screen lines 424 * used from the start of the line to the given column number. 425 */ 426 int 427 plines_win_col(win_T *wp, linenr_T lnum, long column) 428 { 429 long col; 430 char_u *s; 431 int lines = 0; 432 int width; 433 char_u *line; 434 435 #ifdef FEAT_DIFF 436 // Check for filler lines above this buffer line. When folded the result 437 // is one line anyway. 438 lines = diff_check_fill(wp, lnum); 439 #endif 440 441 if (!wp->w_p_wrap) 442 return lines + 1; 443 444 if (wp->w_width == 0) 445 return lines + 1; 446 447 line = s = ml_get_buf(wp->w_buffer, lnum, FALSE); 448 449 col = 0; 450 while (*s != NUL && --column >= 0) 451 { 452 col += win_lbr_chartabsize(wp, line, s, (colnr_T)col, NULL); 453 MB_PTR_ADV(s); 454 } 455 456 /* 457 * If *s is a TAB, and the TAB is not displayed as ^I, and we're not in 458 * INSERT mode, then col must be adjusted so that it represents the last 459 * screen position of the TAB. This only fixes an error when the TAB wraps 460 * from one screen line to the next (when 'columns' is not a multiple of 461 * 'ts') -- webb. 462 */ 463 if (*s == TAB && (State & NORMAL) && (!wp->w_p_list || 464 wp->w_lcs_chars.tab1)) 465 col += win_lbr_chartabsize(wp, line, s, (colnr_T)col, NULL) - 1; 466 467 /* 468 * Add column offset for 'number', 'relativenumber', 'foldcolumn', etc. 469 */ 470 width = wp->w_width - win_col_off(wp); 471 if (width <= 0) 472 return 9999; 473 474 lines += 1; 475 if (col > width) 476 lines += (col - width) / (width + win_col_off2(wp)) + 1; 477 return lines; 478 } 479 480 int 481 plines_m_win(win_T *wp, linenr_T first, linenr_T last) 482 { 483 int count = 0; 484 485 while (first <= last) 486 { 487 #ifdef FEAT_FOLDING 488 int x; 489 490 // Check if there are any really folded lines, but also included lines 491 // that are maybe folded. 492 x = foldedCount(wp, first, NULL); 493 if (x > 0) 494 { 495 ++count; // count 1 for "+-- folded" line 496 first += x; 497 } 498 else 499 #endif 500 { 501 #ifdef FEAT_DIFF 502 if (first == wp->w_topline) 503 count += plines_win_nofill(wp, first, TRUE) + wp->w_topfill; 504 else 505 #endif 506 count += plines_win(wp, first, TRUE); 507 ++first; 508 } 509 } 510 return (count); 511 } 512 513 int 514 gchar_pos(pos_T *pos) 515 { 516 char_u *ptr; 517 518 // When searching columns is sometimes put at the end of a line. 519 if (pos->col == MAXCOL) 520 return NUL; 521 ptr = ml_get_pos(pos); 522 if (has_mbyte) 523 return (*mb_ptr2char)(ptr); 524 return (int)*ptr; 525 } 526 527 int 528 gchar_cursor(void) 529 { 530 if (has_mbyte) 531 return (*mb_ptr2char)(ml_get_cursor()); 532 return (int)*ml_get_cursor(); 533 } 534 535 /* 536 * Write a character at the current cursor position. 537 * It is directly written into the block. 538 */ 539 void 540 pchar_cursor(int c) 541 { 542 *(ml_get_buf(curbuf, curwin->w_cursor.lnum, TRUE) 543 + curwin->w_cursor.col) = c; 544 } 545 546 /* 547 * Skip to next part of an option argument: Skip space and comma. 548 */ 549 char_u * 550 skip_to_option_part(char_u *p) 551 { 552 if (*p == ',') 553 ++p; 554 while (*p == ' ') 555 ++p; 556 return p; 557 } 558 559 /* 560 * check_status: called when the status bars for the buffer 'buf' 561 * need to be updated 562 */ 563 void 564 check_status(buf_T *buf) 565 { 566 win_T *wp; 567 568 FOR_ALL_WINDOWS(wp) 569 if (wp->w_buffer == buf && wp->w_status_height) 570 { 571 wp->w_redr_status = TRUE; 572 if (must_redraw < VALID) 573 must_redraw = VALID; 574 } 575 } 576 577 /* 578 * Ask for a reply from the user, a 'y' or a 'n'. 579 * No other characters are accepted, the message is repeated until a valid 580 * reply is entered or CTRL-C is hit. 581 * If direct is TRUE, don't use vgetc() but ui_inchar(), don't get characters 582 * from any buffers but directly from the user. 583 * 584 * return the 'y' or 'n' 585 */ 586 int 587 ask_yesno(char_u *str, int direct) 588 { 589 int r = ' '; 590 int save_State = State; 591 592 if (exiting) // put terminal in raw mode for this question 593 settmode(TMODE_RAW); 594 ++no_wait_return; 595 #ifdef USE_ON_FLY_SCROLL 596 dont_scroll = TRUE; // disallow scrolling here 597 #endif 598 State = CONFIRM; // mouse behaves like with :confirm 599 setmouse(); // disables mouse for xterm 600 ++no_mapping; 601 ++allow_keys; // no mapping here, but recognize keys 602 603 while (r != 'y' && r != 'n') 604 { 605 // same highlighting as for wait_return 606 smsg_attr(HL_ATTR(HLF_R), "%s (y/n)?", str); 607 if (direct) 608 r = get_keystroke(); 609 else 610 r = plain_vgetc(); 611 if (r == Ctrl_C || r == ESC) 612 r = 'n'; 613 msg_putchar(r); // show what you typed 614 out_flush(); 615 } 616 --no_wait_return; 617 State = save_State; 618 setmouse(); 619 --no_mapping; 620 --allow_keys; 621 622 return r; 623 } 624 625 #if defined(FEAT_EVAL) || defined(PROTO) 626 627 /* 628 * "mode()" function 629 */ 630 void 631 f_mode(typval_T *argvars, typval_T *rettv) 632 { 633 char_u buf[4]; 634 635 if (in_vim9script() && check_for_opt_bool_arg(argvars, 0) == FAIL) 636 return; 637 638 CLEAR_FIELD(buf); 639 640 if (time_for_testing == 93784) 641 { 642 // Testing the two-character code. 643 buf[0] = 'x'; 644 buf[1] = '!'; 645 } 646 #ifdef FEAT_TERMINAL 647 else if (term_use_loop()) 648 buf[0] = 't'; 649 #endif 650 else if (VIsual_active) 651 { 652 if (VIsual_select) 653 buf[0] = VIsual_mode + 's' - 'v'; 654 else 655 buf[0] = VIsual_mode; 656 } 657 else if (State == HITRETURN || State == ASKMORE || State == SETWSIZE 658 || State == CONFIRM) 659 { 660 buf[0] = 'r'; 661 if (State == ASKMORE) 662 buf[1] = 'm'; 663 else if (State == CONFIRM) 664 buf[1] = '?'; 665 } 666 else if (State == EXTERNCMD) 667 buf[0] = '!'; 668 else if (State & INSERT) 669 { 670 if (State & VREPLACE_FLAG) 671 { 672 buf[0] = 'R'; 673 buf[1] = 'v'; 674 } 675 else 676 { 677 if (State & REPLACE_FLAG) 678 buf[0] = 'R'; 679 else 680 buf[0] = 'i'; 681 if (ins_compl_active()) 682 buf[1] = 'c'; 683 else if (ctrl_x_mode_not_defined_yet()) 684 buf[1] = 'x'; 685 } 686 } 687 else if ((State & CMDLINE) || exmode_active) 688 { 689 buf[0] = 'c'; 690 if (exmode_active == EXMODE_VIM) 691 buf[1] = 'v'; 692 else if (exmode_active == EXMODE_NORMAL) 693 buf[1] = 'e'; 694 } 695 else 696 { 697 buf[0] = 'n'; 698 if (finish_op) 699 { 700 buf[1] = 'o'; 701 // to be able to detect force-linewise/blockwise/characterwise 702 // operations 703 buf[2] = motion_force; 704 } 705 else if (restart_edit == 'I' || restart_edit == 'R' 706 || restart_edit == 'V') 707 { 708 buf[1] = 'i'; 709 buf[2] = restart_edit; 710 } 711 } 712 713 // Clear out the minor mode when the argument is not a non-zero number or 714 // non-empty string. 715 if (!non_zero_arg(&argvars[0])) 716 buf[1] = NUL; 717 718 rettv->vval.v_string = vim_strsave(buf); 719 rettv->v_type = VAR_STRING; 720 } 721 722 static void 723 may_add_state_char(garray_T *gap, char_u *include, int c) 724 { 725 if (include == NULL || vim_strchr(include, c) != NULL) 726 ga_append(gap, c); 727 } 728 729 /* 730 * "state()" function 731 */ 732 void 733 f_state(typval_T *argvars, typval_T *rettv) 734 { 735 garray_T ga; 736 char_u *include = NULL; 737 int i; 738 739 if (in_vim9script() && check_for_opt_string_arg(argvars, 0) == FAIL) 740 return; 741 742 ga_init2(&ga, 1, 20); 743 if (argvars[0].v_type != VAR_UNKNOWN) 744 include = tv_get_string(&argvars[0]); 745 746 if (!(stuff_empty() && typebuf.tb_len == 0 && scriptin[curscript] == NULL)) 747 may_add_state_char(&ga, include, 'm'); 748 if (op_pending()) 749 may_add_state_char(&ga, include, 'o'); 750 if (autocmd_busy) 751 may_add_state_char(&ga, include, 'x'); 752 if (ins_compl_active()) 753 may_add_state_char(&ga, include, 'a'); 754 755 # ifdef FEAT_JOB_CHANNEL 756 if (channel_in_blocking_wait()) 757 may_add_state_char(&ga, include, 'w'); 758 # endif 759 if (!get_was_safe_state()) 760 may_add_state_char(&ga, include, 'S'); 761 for (i = 0; i < get_callback_depth() && i < 3; ++i) 762 may_add_state_char(&ga, include, 'c'); 763 if (msg_scrolled > 0) 764 may_add_state_char(&ga, include, 's'); 765 766 rettv->v_type = VAR_STRING; 767 rettv->vval.v_string = ga.ga_data; 768 } 769 770 #endif // FEAT_EVAL 771 772 /* 773 * Get a key stroke directly from the user. 774 * Ignores mouse clicks and scrollbar events, except a click for the left 775 * button (used at the more prompt). 776 * Doesn't use vgetc(), because it syncs undo and eats mapped characters. 777 * Disadvantage: typeahead is ignored. 778 * Translates the interrupt character for unix to ESC. 779 */ 780 int 781 get_keystroke(void) 782 { 783 char_u *buf = NULL; 784 int buflen = 150; 785 int maxlen; 786 int len = 0; 787 int n; 788 int save_mapped_ctrl_c = mapped_ctrl_c; 789 int waited = 0; 790 791 mapped_ctrl_c = FALSE; // mappings are not used here 792 for (;;) 793 { 794 cursor_on(); 795 out_flush(); 796 797 // Leave some room for check_termcode() to insert a key code into (max 798 // 5 chars plus NUL). And fix_input_buffer() can triple the number of 799 // bytes. 800 maxlen = (buflen - 6 - len) / 3; 801 if (buf == NULL) 802 buf = alloc(buflen); 803 else if (maxlen < 10) 804 { 805 char_u *t_buf = buf; 806 807 // Need some more space. This might happen when receiving a long 808 // escape sequence. 809 buflen += 100; 810 buf = vim_realloc(buf, buflen); 811 if (buf == NULL) 812 vim_free(t_buf); 813 maxlen = (buflen - 6 - len) / 3; 814 } 815 if (buf == NULL) 816 { 817 do_outofmem_msg((long_u)buflen); 818 return ESC; // panic! 819 } 820 821 // First time: blocking wait. Second time: wait up to 100ms for a 822 // terminal code to complete. 823 n = ui_inchar(buf + len, maxlen, len == 0 ? -1L : 100L, 0); 824 if (n > 0) 825 { 826 // Replace zero and CSI by a special key code. 827 n = fix_input_buffer(buf + len, n); 828 len += n; 829 waited = 0; 830 } 831 else if (len > 0) 832 ++waited; // keep track of the waiting time 833 834 // Incomplete termcode and not timed out yet: get more characters 835 if ((n = check_termcode(1, buf, buflen, &len)) < 0 836 && (!p_ttimeout || waited * 100L < (p_ttm < 0 ? p_tm : p_ttm))) 837 continue; 838 839 if (n == KEYLEN_REMOVED) // key code removed 840 { 841 if (must_redraw != 0 && !need_wait_return && (State & CMDLINE) == 0) 842 { 843 // Redrawing was postponed, do it now. 844 update_screen(0); 845 setcursor(); // put cursor back where it belongs 846 } 847 continue; 848 } 849 if (n > 0) // found a termcode: adjust length 850 len = n; 851 if (len == 0) // nothing typed yet 852 continue; 853 854 // Handle modifier and/or special key code. 855 n = buf[0]; 856 if (n == K_SPECIAL) 857 { 858 n = TO_SPECIAL(buf[1], buf[2]); 859 if (buf[1] == KS_MODIFIER 860 || n == K_IGNORE 861 || (is_mouse_key(n) && n != K_LEFTMOUSE) 862 #ifdef FEAT_GUI 863 || n == K_VER_SCROLLBAR 864 || n == K_HOR_SCROLLBAR 865 #endif 866 ) 867 { 868 if (buf[1] == KS_MODIFIER) 869 mod_mask = buf[2]; 870 len -= 3; 871 if (len > 0) 872 mch_memmove(buf, buf + 3, (size_t)len); 873 continue; 874 } 875 break; 876 } 877 if (has_mbyte) 878 { 879 if (MB_BYTE2LEN(n) > len) 880 continue; // more bytes to get 881 buf[len >= buflen ? buflen - 1 : len] = NUL; 882 n = (*mb_ptr2char)(buf); 883 } 884 #ifdef UNIX 885 if (n == intr_char) 886 n = ESC; 887 #endif 888 break; 889 } 890 vim_free(buf); 891 892 mapped_ctrl_c = save_mapped_ctrl_c; 893 return n; 894 } 895 896 /* 897 * Get a number from the user. 898 * When "mouse_used" is not NULL allow using the mouse. 899 */ 900 int 901 get_number( 902 int colon, // allow colon to abort 903 int *mouse_used) 904 { 905 int n = 0; 906 int c; 907 int typed = 0; 908 909 if (mouse_used != NULL) 910 *mouse_used = FALSE; 911 912 // When not printing messages, the user won't know what to type, return a 913 // zero (as if CR was hit). 914 if (msg_silent != 0) 915 return 0; 916 917 #ifdef USE_ON_FLY_SCROLL 918 dont_scroll = TRUE; // disallow scrolling here 919 #endif 920 ++no_mapping; 921 ++allow_keys; // no mapping here, but recognize keys 922 for (;;) 923 { 924 windgoto(msg_row, msg_col); 925 c = safe_vgetc(); 926 if (VIM_ISDIGIT(c)) 927 { 928 n = n * 10 + c - '0'; 929 msg_putchar(c); 930 ++typed; 931 } 932 else if (c == K_DEL || c == K_KDEL || c == K_BS || c == Ctrl_H) 933 { 934 if (typed > 0) 935 { 936 msg_puts("\b \b"); 937 --typed; 938 } 939 n /= 10; 940 } 941 else if (mouse_used != NULL && c == K_LEFTMOUSE) 942 { 943 *mouse_used = TRUE; 944 n = mouse_row + 1; 945 break; 946 } 947 else if (n == 0 && c == ':' && colon) 948 { 949 stuffcharReadbuff(':'); 950 if (!exmode_active) 951 cmdline_row = msg_row; 952 skip_redraw = TRUE; // skip redraw once 953 do_redraw = FALSE; 954 break; 955 } 956 else if (c == Ctrl_C || c == ESC || c == 'q') 957 { 958 n = 0; 959 break; 960 } 961 else if (c == CAR || c == NL ) 962 break; 963 } 964 --no_mapping; 965 --allow_keys; 966 return n; 967 } 968 969 /* 970 * Ask the user to enter a number. 971 * When "mouse_used" is not NULL allow using the mouse and in that case return 972 * the line number. 973 */ 974 int 975 prompt_for_number(int *mouse_used) 976 { 977 int i; 978 int save_cmdline_row; 979 int save_State; 980 981 // When using ":silent" assume that <CR> was entered. 982 if (mouse_used != NULL) 983 msg_puts(_("Type number and <Enter> or click with the mouse (q or empty cancels): ")); 984 else 985 msg_puts(_("Type number and <Enter> (q or empty cancels): ")); 986 987 // Set the state such that text can be selected/copied/pasted and we still 988 // get mouse events. redraw_after_callback() will not redraw if cmdline_row 989 // is zero. 990 save_cmdline_row = cmdline_row; 991 cmdline_row = 0; 992 save_State = State; 993 State = CMDLINE; 994 // May show different mouse shape. 995 setmouse(); 996 997 i = get_number(TRUE, mouse_used); 998 if (KeyTyped) 999 { 1000 // don't call wait_return() now 1001 if (msg_row > 0) 1002 cmdline_row = msg_row - 1; 1003 need_wait_return = FALSE; 1004 msg_didany = FALSE; 1005 msg_didout = FALSE; 1006 } 1007 else 1008 cmdline_row = save_cmdline_row; 1009 State = save_State; 1010 // May need to restore mouse shape. 1011 setmouse(); 1012 1013 return i; 1014 } 1015 1016 void 1017 msgmore(long n) 1018 { 1019 long pn; 1020 1021 if (global_busy // no messages now, wait until global is finished 1022 || !messaging()) // 'lazyredraw' set, don't do messages now 1023 return; 1024 1025 // We don't want to overwrite another important message, but do overwrite 1026 // a previous "more lines" or "fewer lines" message, so that "5dd" and 1027 // then "put" reports the last action. 1028 if (keep_msg != NULL && !keep_msg_more) 1029 return; 1030 1031 if (n > 0) 1032 pn = n; 1033 else 1034 pn = -n; 1035 1036 if (pn > p_report) 1037 { 1038 if (n > 0) 1039 vim_snprintf(msg_buf, MSG_BUF_LEN, 1040 NGETTEXT("%ld more line", "%ld more lines", pn), pn); 1041 else 1042 vim_snprintf(msg_buf, MSG_BUF_LEN, 1043 NGETTEXT("%ld line less", "%ld fewer lines", pn), pn); 1044 if (got_int) 1045 vim_strcat((char_u *)msg_buf, (char_u *)_(" (Interrupted)"), 1046 MSG_BUF_LEN); 1047 if (msg(msg_buf)) 1048 { 1049 set_keep_msg((char_u *)msg_buf, 0); 1050 keep_msg_more = TRUE; 1051 } 1052 } 1053 } 1054 1055 /* 1056 * flush map and typeahead buffers and give a warning for an error 1057 */ 1058 void 1059 beep_flush(void) 1060 { 1061 if (emsg_silent == 0) 1062 { 1063 flush_buffers(FLUSH_MINIMAL); 1064 vim_beep(BO_ERROR); 1065 } 1066 } 1067 1068 /* 1069 * Give a warning for an error. 1070 */ 1071 void 1072 vim_beep( 1073 unsigned val) // one of the BO_ values, e.g., BO_OPER 1074 { 1075 #ifdef FEAT_EVAL 1076 called_vim_beep = TRUE; 1077 #endif 1078 1079 if (emsg_silent == 0 && !in_assert_fails) 1080 { 1081 if (!((bo_flags & val) || (bo_flags & BO_ALL))) 1082 { 1083 #ifdef ELAPSED_FUNC 1084 static int did_init = FALSE; 1085 static elapsed_T start_tv; 1086 1087 // Only beep once per half a second, otherwise a sequence of beeps 1088 // would freeze Vim. 1089 if (!did_init || ELAPSED_FUNC(start_tv) > 500) 1090 { 1091 did_init = TRUE; 1092 ELAPSED_INIT(start_tv); 1093 #endif 1094 if (p_vb 1095 #ifdef FEAT_GUI 1096 // While the GUI is starting up the termcap is set for 1097 // the GUI but the output still goes to a terminal. 1098 && !(gui.in_use && gui.starting) 1099 #endif 1100 ) 1101 { 1102 out_str_cf(T_VB); 1103 #ifdef FEAT_VTP 1104 // No restore color information, refresh the screen. 1105 if (has_vtp_working() != 0 1106 # ifdef FEAT_TERMGUICOLORS 1107 && (p_tgc || (!p_tgc && t_colors >= 256)) 1108 # endif 1109 ) 1110 { 1111 redraw_later(CLEAR); 1112 update_screen(0); 1113 redrawcmd(); 1114 } 1115 #endif 1116 } 1117 else 1118 out_char(BELL); 1119 #ifdef ELAPSED_FUNC 1120 } 1121 #endif 1122 } 1123 1124 // When 'debug' contains "beep" produce a message. If we are sourcing 1125 // a script or executing a function give the user a hint where the beep 1126 // comes from. 1127 if (vim_strchr(p_debug, 'e') != NULL) 1128 { 1129 msg_source(HL_ATTR(HLF_W)); 1130 msg_attr(_("Beep!"), HL_ATTR(HLF_W)); 1131 } 1132 } 1133 } 1134 1135 /* 1136 * To get the "real" home directory: 1137 * - get value of $HOME 1138 * For Unix: 1139 * - go to that directory 1140 * - do mch_dirname() to get the real name of that directory. 1141 * This also works with mounts and links. 1142 * Don't do this for MS-DOS, it will change the "current dir" for a drive. 1143 * For Windows: 1144 * This code is duplicated in init_homedir() in dosinst.c. Keep in sync! 1145 */ 1146 void 1147 init_homedir(void) 1148 { 1149 char_u *var; 1150 1151 // In case we are called a second time (when 'encoding' changes). 1152 VIM_CLEAR(homedir); 1153 1154 #ifdef VMS 1155 var = mch_getenv((char_u *)"SYS$LOGIN"); 1156 #else 1157 var = mch_getenv((char_u *)"HOME"); 1158 #endif 1159 1160 #ifdef MSWIN 1161 /* 1162 * Typically, $HOME is not defined on Windows, unless the user has 1163 * specifically defined it for Vim's sake. However, on Windows NT 1164 * platforms, $HOMEDRIVE and $HOMEPATH are automatically defined for 1165 * each user. Try constructing $HOME from these. 1166 */ 1167 if (var == NULL || *var == NUL) 1168 { 1169 char_u *homedrive, *homepath; 1170 1171 homedrive = mch_getenv((char_u *)"HOMEDRIVE"); 1172 homepath = mch_getenv((char_u *)"HOMEPATH"); 1173 if (homepath == NULL || *homepath == NUL) 1174 homepath = (char_u *)"\\"; 1175 if (homedrive != NULL 1176 && STRLEN(homedrive) + STRLEN(homepath) < MAXPATHL) 1177 { 1178 sprintf((char *)NameBuff, "%s%s", homedrive, homepath); 1179 if (NameBuff[0] != NUL) 1180 var = NameBuff; 1181 } 1182 } 1183 1184 if (var == NULL) 1185 var = mch_getenv((char_u *)"USERPROFILE"); 1186 1187 /* 1188 * Weird but true: $HOME may contain an indirect reference to another 1189 * variable, esp. "%USERPROFILE%". Happens when $USERPROFILE isn't set 1190 * when $HOME is being set. 1191 */ 1192 if (var != NULL && *var == '%') 1193 { 1194 char_u *p; 1195 char_u *exp; 1196 1197 p = vim_strchr(var + 1, '%'); 1198 if (p != NULL) 1199 { 1200 vim_strncpy(NameBuff, var + 1, p - (var + 1)); 1201 exp = mch_getenv(NameBuff); 1202 if (exp != NULL && *exp != NUL 1203 && STRLEN(exp) + STRLEN(p) < MAXPATHL) 1204 { 1205 vim_snprintf((char *)NameBuff, MAXPATHL, "%s%s", exp, p + 1); 1206 var = NameBuff; 1207 } 1208 } 1209 } 1210 1211 if (var != NULL && *var == NUL) // empty is same as not set 1212 var = NULL; 1213 1214 if (enc_utf8 && var != NULL) 1215 { 1216 int len; 1217 char_u *pp = NULL; 1218 1219 // Convert from active codepage to UTF-8. Other conversions are 1220 // not done, because they would fail for non-ASCII characters. 1221 acp_to_enc(var, (int)STRLEN(var), &pp, &len); 1222 if (pp != NULL) 1223 { 1224 homedir = pp; 1225 return; 1226 } 1227 } 1228 1229 /* 1230 * Default home dir is C:/ 1231 * Best assumption we can make in such a situation. 1232 */ 1233 if (var == NULL) 1234 var = (char_u *)"C:/"; 1235 #endif 1236 1237 if (var != NULL) 1238 { 1239 #ifdef UNIX 1240 /* 1241 * Change to the directory and get the actual path. This resolves 1242 * links. Don't do it when we can't return. 1243 */ 1244 if (mch_dirname(NameBuff, MAXPATHL) == OK 1245 && mch_chdir((char *)NameBuff) == 0) 1246 { 1247 if (!mch_chdir((char *)var) && mch_dirname(IObuff, IOSIZE) == OK) 1248 var = IObuff; 1249 if (mch_chdir((char *)NameBuff) != 0) 1250 emsg(_(e_prev_dir)); 1251 } 1252 #endif 1253 homedir = vim_strsave(var); 1254 } 1255 } 1256 1257 #if defined(EXITFREE) || defined(PROTO) 1258 void 1259 free_homedir(void) 1260 { 1261 vim_free(homedir); 1262 } 1263 1264 void 1265 free_users(void) 1266 { 1267 ga_clear_strings(&ga_users); 1268 } 1269 #endif 1270 1271 /* 1272 * Call expand_env() and store the result in an allocated string. 1273 * This is not very memory efficient, this expects the result to be freed 1274 * again soon. 1275 */ 1276 char_u * 1277 expand_env_save(char_u *src) 1278 { 1279 return expand_env_save_opt(src, FALSE); 1280 } 1281 1282 /* 1283 * Idem, but when "one" is TRUE handle the string as one file name, only 1284 * expand "~" at the start. 1285 */ 1286 char_u * 1287 expand_env_save_opt(char_u *src, int one) 1288 { 1289 char_u *p; 1290 1291 p = alloc(MAXPATHL); 1292 if (p != NULL) 1293 expand_env_esc(src, p, MAXPATHL, FALSE, one, NULL); 1294 return p; 1295 } 1296 1297 /* 1298 * Expand environment variable with path name. 1299 * "~/" is also expanded, using $HOME. For Unix "~user/" is expanded. 1300 * Skips over "\ ", "\~" and "\$" (not for Win32 though). 1301 * If anything fails no expansion is done and dst equals src. 1302 */ 1303 void 1304 expand_env( 1305 char_u *src, // input string e.g. "$HOME/vim.hlp" 1306 char_u *dst, // where to put the result 1307 int dstlen) // maximum length of the result 1308 { 1309 expand_env_esc(src, dst, dstlen, FALSE, FALSE, NULL); 1310 } 1311 1312 void 1313 expand_env_esc( 1314 char_u *srcp, // input string e.g. "$HOME/vim.hlp" 1315 char_u *dst, // where to put the result 1316 int dstlen, // maximum length of the result 1317 int esc, // escape spaces in expanded variables 1318 int one, // "srcp" is one file name 1319 char_u *startstr) // start again after this (can be NULL) 1320 { 1321 char_u *src; 1322 char_u *tail; 1323 int c; 1324 char_u *var; 1325 int copy_char; 1326 int mustfree; // var was allocated, need to free it later 1327 int at_start = TRUE; // at start of a name 1328 int startstr_len = 0; 1329 1330 if (startstr != NULL) 1331 startstr_len = (int)STRLEN(startstr); 1332 1333 src = skipwhite(srcp); 1334 --dstlen; // leave one char space for "\," 1335 while (*src && dstlen > 0) 1336 { 1337 #ifdef FEAT_EVAL 1338 // Skip over `=expr`. 1339 if (src[0] == '`' && src[1] == '=') 1340 { 1341 size_t len; 1342 1343 var = src; 1344 src += 2; 1345 (void)skip_expr(&src, NULL); 1346 if (*src == '`') 1347 ++src; 1348 len = src - var; 1349 if (len > (size_t)dstlen) 1350 len = dstlen; 1351 vim_strncpy(dst, var, len); 1352 dst += len; 1353 dstlen -= (int)len; 1354 continue; 1355 } 1356 #endif 1357 copy_char = TRUE; 1358 if ((*src == '$' 1359 #ifdef VMS 1360 && at_start 1361 #endif 1362 ) 1363 #if defined(MSWIN) 1364 || *src == '%' 1365 #endif 1366 || (*src == '~' && at_start)) 1367 { 1368 mustfree = FALSE; 1369 1370 /* 1371 * The variable name is copied into dst temporarily, because it may 1372 * be a string in read-only memory and a NUL needs to be appended. 1373 */ 1374 if (*src != '~') // environment var 1375 { 1376 tail = src + 1; 1377 var = dst; 1378 c = dstlen - 1; 1379 1380 #ifdef UNIX 1381 // Unix has ${var-name} type environment vars 1382 if (*tail == '{' && !vim_isIDc('{')) 1383 { 1384 tail++; // ignore '{' 1385 while (c-- > 0 && *tail && *tail != '}') 1386 *var++ = *tail++; 1387 } 1388 else 1389 #endif 1390 { 1391 while (c-- > 0 && *tail != NUL && ((vim_isIDc(*tail)) 1392 #if defined(MSWIN) 1393 || (*src == '%' && *tail != '%') 1394 #endif 1395 )) 1396 *var++ = *tail++; 1397 } 1398 1399 #if defined(MSWIN) || defined(UNIX) 1400 # ifdef UNIX 1401 if (src[1] == '{' && *tail != '}') 1402 # else 1403 if (*src == '%' && *tail != '%') 1404 # endif 1405 var = NULL; 1406 else 1407 { 1408 # ifdef UNIX 1409 if (src[1] == '{') 1410 # else 1411 if (*src == '%') 1412 #endif 1413 ++tail; 1414 #endif 1415 *var = NUL; 1416 var = vim_getenv(dst, &mustfree); 1417 #if defined(MSWIN) || defined(UNIX) 1418 } 1419 #endif 1420 } 1421 // home directory 1422 else if ( src[1] == NUL 1423 || vim_ispathsep(src[1]) 1424 || vim_strchr((char_u *)" ,\t\n", src[1]) != NULL) 1425 { 1426 var = homedir; 1427 tail = src + 1; 1428 } 1429 else // user directory 1430 { 1431 #if defined(UNIX) || (defined(VMS) && defined(USER_HOME)) 1432 /* 1433 * Copy ~user to dst[], so we can put a NUL after it. 1434 */ 1435 tail = src; 1436 var = dst; 1437 c = dstlen - 1; 1438 while ( c-- > 0 1439 && *tail 1440 && vim_isfilec(*tail) 1441 && !vim_ispathsep(*tail)) 1442 *var++ = *tail++; 1443 *var = NUL; 1444 # ifdef UNIX 1445 /* 1446 * If the system supports getpwnam(), use it. 1447 * Otherwise, or if getpwnam() fails, the shell is used to 1448 * expand ~user. This is slower and may fail if the shell 1449 * does not support ~user (old versions of /bin/sh). 1450 */ 1451 # if defined(HAVE_GETPWNAM) && defined(HAVE_PWD_H) 1452 { 1453 // Note: memory allocated by getpwnam() is never freed. 1454 // Calling endpwent() apparently doesn't help. 1455 struct passwd *pw = (*dst == NUL) 1456 ? NULL : getpwnam((char *)dst + 1); 1457 1458 var = (pw == NULL) ? NULL : (char_u *)pw->pw_dir; 1459 } 1460 if (var == NULL) 1461 # endif 1462 { 1463 expand_T xpc; 1464 1465 ExpandInit(&xpc); 1466 xpc.xp_context = EXPAND_FILES; 1467 var = ExpandOne(&xpc, dst, NULL, 1468 WILD_ADD_SLASH|WILD_SILENT, WILD_EXPAND_FREE); 1469 mustfree = TRUE; 1470 } 1471 1472 # else // !UNIX, thus VMS 1473 /* 1474 * USER_HOME is a comma-separated list of 1475 * directories to search for the user account in. 1476 */ 1477 { 1478 char_u test[MAXPATHL], paths[MAXPATHL]; 1479 char_u *path, *next_path, *ptr; 1480 stat_T st; 1481 1482 STRCPY(paths, USER_HOME); 1483 next_path = paths; 1484 while (*next_path) 1485 { 1486 for (path = next_path; *next_path && *next_path != ','; 1487 next_path++); 1488 if (*next_path) 1489 *next_path++ = NUL; 1490 STRCPY(test, path); 1491 STRCAT(test, "/"); 1492 STRCAT(test, dst + 1); 1493 if (mch_stat(test, &st) == 0) 1494 { 1495 var = alloc(STRLEN(test) + 1); 1496 STRCPY(var, test); 1497 mustfree = TRUE; 1498 break; 1499 } 1500 } 1501 } 1502 # endif // UNIX 1503 #else 1504 // cannot expand user's home directory, so don't try 1505 var = NULL; 1506 tail = (char_u *)""; // for gcc 1507 #endif // UNIX || VMS 1508 } 1509 1510 #ifdef BACKSLASH_IN_FILENAME 1511 // If 'shellslash' is set change backslashes to forward slashes. 1512 // Can't use slash_adjust(), p_ssl may be set temporarily. 1513 if (p_ssl && var != NULL && vim_strchr(var, '\\') != NULL) 1514 { 1515 char_u *p = vim_strsave(var); 1516 1517 if (p != NULL) 1518 { 1519 if (mustfree) 1520 vim_free(var); 1521 var = p; 1522 mustfree = TRUE; 1523 forward_slash(var); 1524 } 1525 } 1526 #endif 1527 1528 // If "var" contains white space, escape it with a backslash. 1529 // Required for ":e ~/tt" when $HOME includes a space. 1530 if (esc && var != NULL && vim_strpbrk(var, (char_u *)" \t") != NULL) 1531 { 1532 char_u *p = vim_strsave_escaped(var, (char_u *)" \t"); 1533 1534 if (p != NULL) 1535 { 1536 if (mustfree) 1537 vim_free(var); 1538 var = p; 1539 mustfree = TRUE; 1540 } 1541 } 1542 1543 if (var != NULL && *var != NUL 1544 && (STRLEN(var) + STRLEN(tail) + 1 < (unsigned)dstlen)) 1545 { 1546 STRCPY(dst, var); 1547 dstlen -= (int)STRLEN(var); 1548 c = (int)STRLEN(var); 1549 // if var[] ends in a path separator and tail[] starts 1550 // with it, skip a character 1551 if (*var != NUL && after_pathsep(dst, dst + c) 1552 #if defined(BACKSLASH_IN_FILENAME) || defined(AMIGA) 1553 && dst[-1] != ':' 1554 #endif 1555 && vim_ispathsep(*tail)) 1556 ++tail; 1557 dst += c; 1558 src = tail; 1559 copy_char = FALSE; 1560 } 1561 if (mustfree) 1562 vim_free(var); 1563 } 1564 1565 if (copy_char) // copy at least one char 1566 { 1567 /* 1568 * Recognize the start of a new name, for '~'. 1569 * Don't do this when "one" is TRUE, to avoid expanding "~" in 1570 * ":edit foo ~ foo". 1571 */ 1572 at_start = FALSE; 1573 if (src[0] == '\\' && src[1] != NUL) 1574 { 1575 *dst++ = *src++; 1576 --dstlen; 1577 } 1578 else if ((src[0] == ' ' || src[0] == ',') && !one) 1579 at_start = TRUE; 1580 if (dstlen > 0) 1581 { 1582 *dst++ = *src++; 1583 --dstlen; 1584 1585 if (startstr != NULL && src - startstr_len >= srcp 1586 && STRNCMP(src - startstr_len, startstr, 1587 startstr_len) == 0) 1588 at_start = TRUE; 1589 } 1590 } 1591 1592 } 1593 *dst = NUL; 1594 } 1595 1596 /* 1597 * If the string between "p" and "pend" ends in "name/", return "pend" minus 1598 * the length of "name/". Otherwise return "pend". 1599 */ 1600 static char_u * 1601 remove_tail(char_u *p, char_u *pend, char_u *name) 1602 { 1603 int len = (int)STRLEN(name) + 1; 1604 char_u *newend = pend - len; 1605 1606 if (newend >= p 1607 && fnamencmp(newend, name, len - 1) == 0 1608 && (newend == p || after_pathsep(p, newend))) 1609 return newend; 1610 return pend; 1611 } 1612 1613 /* 1614 * Check if the directory "vimdir/<version>" or "vimdir/runtime" exists. 1615 * Return NULL if not, return its name in allocated memory otherwise. 1616 */ 1617 static char_u * 1618 vim_version_dir(char_u *vimdir) 1619 { 1620 char_u *p; 1621 1622 if (vimdir == NULL || *vimdir == NUL) 1623 return NULL; 1624 p = concat_fnames(vimdir, (char_u *)VIM_VERSION_NODOT, TRUE); 1625 if (p != NULL && mch_isdir(p)) 1626 return p; 1627 vim_free(p); 1628 p = concat_fnames(vimdir, (char_u *)RUNTIME_DIRNAME, TRUE); 1629 if (p != NULL && mch_isdir(p)) 1630 return p; 1631 vim_free(p); 1632 return NULL; 1633 } 1634 1635 /* 1636 * Vim's version of getenv(). 1637 * Special handling of $HOME, $VIM and $VIMRUNTIME. 1638 * Also does ACP to 'enc' conversion for Win32. 1639 * "mustfree" is set to TRUE when returned is allocated, it must be 1640 * initialized to FALSE by the caller. 1641 */ 1642 char_u * 1643 vim_getenv(char_u *name, int *mustfree) 1644 { 1645 char_u *p = NULL; 1646 char_u *pend; 1647 int vimruntime; 1648 #ifdef MSWIN 1649 WCHAR *wn, *wp; 1650 1651 // use "C:/" when $HOME is not set 1652 if (STRCMP(name, "HOME") == 0) 1653 return homedir; 1654 1655 // Use Wide function 1656 wn = enc_to_utf16(name, NULL); 1657 if (wn == NULL) 1658 return NULL; 1659 1660 wp = _wgetenv(wn); 1661 vim_free(wn); 1662 1663 if (wp != NULL && *wp == NUL) // empty is the same as not set 1664 wp = NULL; 1665 1666 if (wp != NULL) 1667 { 1668 p = utf16_to_enc(wp, NULL); 1669 if (p == NULL) 1670 return NULL; 1671 1672 *mustfree = TRUE; 1673 return p; 1674 } 1675 #else 1676 p = mch_getenv(name); 1677 if (p != NULL && *p == NUL) // empty is the same as not set 1678 p = NULL; 1679 1680 if (p != NULL) 1681 return p; 1682 1683 # ifdef __HAIKU__ 1684 // special handling for user settings directory... 1685 if (STRCMP(name, "BE_USER_SETTINGS") == 0) 1686 { 1687 static char userSettingsPath[MAXPATHL]; 1688 1689 if (find_directory(B_USER_SETTINGS_DIRECTORY, 0, false, 1690 userSettingsPath, MAXPATHL) == B_OK) 1691 return (char_u *)userSettingsPath; 1692 else 1693 return NULL; 1694 } 1695 # endif 1696 #endif 1697 1698 // handling $VIMRUNTIME and $VIM is below, bail out if it's another name. 1699 vimruntime = (STRCMP(name, "VIMRUNTIME") == 0); 1700 if (!vimruntime && STRCMP(name, "VIM") != 0) 1701 return NULL; 1702 1703 /* 1704 * When expanding $VIMRUNTIME fails, try using $VIM/vim<version> or $VIM. 1705 * Don't do this when default_vimruntime_dir is non-empty. 1706 */ 1707 if (vimruntime 1708 #ifdef HAVE_PATHDEF 1709 && *default_vimruntime_dir == NUL 1710 #endif 1711 ) 1712 { 1713 #ifdef MSWIN 1714 // Use Wide function 1715 wp = _wgetenv(L"VIM"); 1716 if (wp != NULL && *wp == NUL) // empty is the same as not set 1717 wp = NULL; 1718 if (wp != NULL) 1719 { 1720 char_u *q = utf16_to_enc(wp, NULL); 1721 if (q != NULL) 1722 { 1723 p = vim_version_dir(q); 1724 *mustfree = TRUE; 1725 if (p == NULL) 1726 p = q; 1727 } 1728 } 1729 #else 1730 p = mch_getenv((char_u *)"VIM"); 1731 if (p != NULL && *p == NUL) // empty is the same as not set 1732 p = NULL; 1733 if (p != NULL) 1734 { 1735 p = vim_version_dir(p); 1736 if (p != NULL) 1737 *mustfree = TRUE; 1738 else 1739 p = mch_getenv((char_u *)"VIM"); 1740 } 1741 #endif 1742 } 1743 1744 /* 1745 * When expanding $VIM or $VIMRUNTIME fails, try using: 1746 * - the directory name from 'helpfile' (unless it contains '$') 1747 * - the executable name from argv[0] 1748 */ 1749 if (p == NULL) 1750 { 1751 if (p_hf != NULL && vim_strchr(p_hf, '$') == NULL) 1752 p = p_hf; 1753 #ifdef USE_EXE_NAME 1754 /* 1755 * Use the name of the executable, obtained from argv[0]. 1756 */ 1757 else 1758 p = exe_name; 1759 #endif 1760 if (p != NULL) 1761 { 1762 // remove the file name 1763 pend = gettail(p); 1764 1765 // remove "doc/" from 'helpfile', if present 1766 if (p == p_hf) 1767 pend = remove_tail(p, pend, (char_u *)"doc"); 1768 1769 #ifdef USE_EXE_NAME 1770 # ifdef MACOS_X 1771 // remove "MacOS" from exe_name and add "Resources/vim" 1772 if (p == exe_name) 1773 { 1774 char_u *pend1; 1775 char_u *pnew; 1776 1777 pend1 = remove_tail(p, pend, (char_u *)"MacOS"); 1778 if (pend1 != pend) 1779 { 1780 pnew = alloc(pend1 - p + 15); 1781 if (pnew != NULL) 1782 { 1783 STRNCPY(pnew, p, (pend1 - p)); 1784 STRCPY(pnew + (pend1 - p), "Resources/vim"); 1785 p = pnew; 1786 pend = p + STRLEN(p); 1787 } 1788 } 1789 } 1790 # endif 1791 // remove "src/" from exe_name, if present 1792 if (p == exe_name) 1793 pend = remove_tail(p, pend, (char_u *)"src"); 1794 #endif 1795 1796 // for $VIM, remove "runtime/" or "vim54/", if present 1797 if (!vimruntime) 1798 { 1799 pend = remove_tail(p, pend, (char_u *)RUNTIME_DIRNAME); 1800 pend = remove_tail(p, pend, (char_u *)VIM_VERSION_NODOT); 1801 } 1802 1803 // remove trailing path separator 1804 if (pend > p && after_pathsep(p, pend)) 1805 --pend; 1806 1807 #ifdef MACOS_X 1808 if (p == exe_name || p == p_hf) 1809 #endif 1810 // check that the result is a directory name 1811 p = vim_strnsave(p, pend - p); 1812 1813 if (p != NULL && !mch_isdir(p)) 1814 VIM_CLEAR(p); 1815 else 1816 { 1817 #ifdef USE_EXE_NAME 1818 // may add "/vim54" or "/runtime" if it exists 1819 if (vimruntime && (pend = vim_version_dir(p)) != NULL) 1820 { 1821 vim_free(p); 1822 p = pend; 1823 } 1824 #endif 1825 *mustfree = TRUE; 1826 } 1827 } 1828 } 1829 1830 #ifdef HAVE_PATHDEF 1831 // When there is a pathdef.c file we can use default_vim_dir and 1832 // default_vimruntime_dir 1833 if (p == NULL) 1834 { 1835 // Only use default_vimruntime_dir when it is not empty 1836 if (vimruntime && *default_vimruntime_dir != NUL) 1837 { 1838 p = default_vimruntime_dir; 1839 *mustfree = FALSE; 1840 } 1841 else if (*default_vim_dir != NUL) 1842 { 1843 if (vimruntime && (p = vim_version_dir(default_vim_dir)) != NULL) 1844 *mustfree = TRUE; 1845 else 1846 { 1847 p = default_vim_dir; 1848 *mustfree = FALSE; 1849 } 1850 } 1851 } 1852 #endif 1853 1854 /* 1855 * Set the environment variable, so that the new value can be found fast 1856 * next time, and others can also use it (e.g. Perl). 1857 */ 1858 if (p != NULL) 1859 { 1860 if (vimruntime) 1861 { 1862 vim_setenv((char_u *)"VIMRUNTIME", p); 1863 didset_vimruntime = TRUE; 1864 } 1865 else 1866 { 1867 vim_setenv((char_u *)"VIM", p); 1868 didset_vim = TRUE; 1869 } 1870 } 1871 return p; 1872 } 1873 1874 #if defined(FEAT_EVAL) || defined(PROTO) 1875 void 1876 vim_unsetenv(char_u *var) 1877 { 1878 #ifdef HAVE_UNSETENV 1879 unsetenv((char *)var); 1880 #else 1881 vim_setenv(var, (char_u *)""); 1882 #endif 1883 } 1884 #endif 1885 1886 1887 /* 1888 * Set environment variable "name" and take care of side effects. 1889 */ 1890 void 1891 vim_setenv_ext(char_u *name, char_u *val) 1892 { 1893 vim_setenv(name, val); 1894 if (STRICMP(name, "HOME") == 0) 1895 init_homedir(); 1896 else if (didset_vim && STRICMP(name, "VIM") == 0) 1897 didset_vim = FALSE; 1898 else if (didset_vimruntime 1899 && STRICMP(name, "VIMRUNTIME") == 0) 1900 didset_vimruntime = FALSE; 1901 } 1902 1903 /* 1904 * Our portable version of setenv. 1905 */ 1906 void 1907 vim_setenv(char_u *name, char_u *val) 1908 { 1909 #ifdef HAVE_SETENV 1910 mch_setenv((char *)name, (char *)val, 1); 1911 #else 1912 char_u *envbuf; 1913 1914 /* 1915 * Putenv does not copy the string, it has to remain 1916 * valid. The allocated memory will never be freed. 1917 */ 1918 envbuf = alloc(STRLEN(name) + STRLEN(val) + 2); 1919 if (envbuf != NULL) 1920 { 1921 sprintf((char *)envbuf, "%s=%s", name, val); 1922 putenv((char *)envbuf); 1923 } 1924 #endif 1925 #ifdef FEAT_GETTEXT 1926 /* 1927 * When setting $VIMRUNTIME adjust the directory to find message 1928 * translations to $VIMRUNTIME/lang. 1929 */ 1930 if (*val != NUL && STRICMP(name, "VIMRUNTIME") == 0) 1931 { 1932 char_u *buf = concat_str(val, (char_u *)"/lang"); 1933 1934 if (buf != NULL) 1935 { 1936 bindtextdomain(VIMPACKAGE, (char *)buf); 1937 vim_free(buf); 1938 } 1939 } 1940 #endif 1941 } 1942 1943 /* 1944 * Function given to ExpandGeneric() to obtain an environment variable name. 1945 */ 1946 char_u * 1947 get_env_name( 1948 expand_T *xp UNUSED, 1949 int idx) 1950 { 1951 # if defined(AMIGA) 1952 /* 1953 * No environ[] on the Amiga. 1954 */ 1955 return NULL; 1956 # else 1957 # ifndef __WIN32__ 1958 // Borland C++ 5.2 has this in a header file. 1959 extern char **environ; 1960 # endif 1961 # define ENVNAMELEN 100 1962 static char_u name[ENVNAMELEN]; 1963 char_u *str; 1964 int n; 1965 1966 str = (char_u *)environ[idx]; 1967 if (str == NULL) 1968 return NULL; 1969 1970 for (n = 0; n < ENVNAMELEN - 1; ++n) 1971 { 1972 if (str[n] == '=' || str[n] == NUL) 1973 break; 1974 name[n] = str[n]; 1975 } 1976 name[n] = NUL; 1977 return name; 1978 # endif 1979 } 1980 1981 /* 1982 * Add a user name to the list of users in ga_users. 1983 * Do nothing if user name is NULL or empty. 1984 */ 1985 static void 1986 add_user(char_u *user, int need_copy) 1987 { 1988 char_u *user_copy = (user != NULL && need_copy) 1989 ? vim_strsave(user) : user; 1990 1991 if (user_copy == NULL || *user_copy == NUL || ga_grow(&ga_users, 1) == FAIL) 1992 { 1993 if (need_copy) 1994 vim_free(user); 1995 return; 1996 } 1997 ((char_u **)(ga_users.ga_data))[ga_users.ga_len++] = user_copy; 1998 } 1999 2000 /* 2001 * Find all user names for user completion. 2002 * Done only once and then cached. 2003 */ 2004 static void 2005 init_users(void) 2006 { 2007 static int lazy_init_done = FALSE; 2008 2009 if (lazy_init_done) 2010 return; 2011 2012 lazy_init_done = TRUE; 2013 ga_init2(&ga_users, sizeof(char_u *), 20); 2014 2015 # if defined(HAVE_GETPWENT) && defined(HAVE_PWD_H) 2016 { 2017 struct passwd* pw; 2018 2019 setpwent(); 2020 while ((pw = getpwent()) != NULL) 2021 add_user((char_u *)pw->pw_name, TRUE); 2022 endpwent(); 2023 } 2024 # elif defined(MSWIN) 2025 { 2026 DWORD nusers = 0, ntotal = 0, i; 2027 PUSER_INFO_0 uinfo; 2028 2029 if (NetUserEnum(NULL, 0, 0, (LPBYTE *) &uinfo, MAX_PREFERRED_LENGTH, 2030 &nusers, &ntotal, NULL) == NERR_Success) 2031 { 2032 for (i = 0; i < nusers; i++) 2033 add_user(utf16_to_enc(uinfo[i].usri0_name, NULL), FALSE); 2034 2035 NetApiBufferFree(uinfo); 2036 } 2037 } 2038 # endif 2039 # if defined(HAVE_GETPWNAM) 2040 { 2041 char_u *user_env = mch_getenv((char_u *)"USER"); 2042 2043 // The $USER environment variable may be a valid remote user name (NIS, 2044 // LDAP) not already listed by getpwent(), as getpwent() only lists 2045 // local user names. If $USER is not already listed, check whether it 2046 // is a valid remote user name using getpwnam() and if it is, add it to 2047 // the list of user names. 2048 2049 if (user_env != NULL && *user_env != NUL) 2050 { 2051 int i; 2052 2053 for (i = 0; i < ga_users.ga_len; i++) 2054 { 2055 char_u *local_user = ((char_u **)ga_users.ga_data)[i]; 2056 2057 if (STRCMP(local_user, user_env) == 0) 2058 break; 2059 } 2060 2061 if (i == ga_users.ga_len) 2062 { 2063 struct passwd *pw = getpwnam((char *)user_env); 2064 2065 if (pw != NULL) 2066 add_user((char_u *)pw->pw_name, TRUE); 2067 } 2068 } 2069 } 2070 # endif 2071 } 2072 2073 /* 2074 * Function given to ExpandGeneric() to obtain an user names. 2075 */ 2076 char_u* 2077 get_users(expand_T *xp UNUSED, int idx) 2078 { 2079 init_users(); 2080 if (idx < ga_users.ga_len) 2081 return ((char_u **)ga_users.ga_data)[idx]; 2082 return NULL; 2083 } 2084 2085 /* 2086 * Check whether name matches a user name. Return: 2087 * 0 if name does not match any user name. 2088 * 1 if name partially matches the beginning of a user name. 2089 * 2 is name fully matches a user name. 2090 */ 2091 int 2092 match_user(char_u *name) 2093 { 2094 int i; 2095 int n = (int)STRLEN(name); 2096 int result = 0; 2097 2098 init_users(); 2099 for (i = 0; i < ga_users.ga_len; i++) 2100 { 2101 if (STRCMP(((char_u **)ga_users.ga_data)[i], name) == 0) 2102 return 2; // full match 2103 if (STRNCMP(((char_u **)ga_users.ga_data)[i], name, n) == 0) 2104 result = 1; // partial match 2105 } 2106 return result; 2107 } 2108 2109 static void 2110 prepare_to_exit(void) 2111 { 2112 #if defined(SIGHUP) && defined(SIG_IGN) 2113 // Ignore SIGHUP, because a dropped connection causes a read error, which 2114 // makes Vim exit and then handling SIGHUP causes various reentrance 2115 // problems. 2116 signal(SIGHUP, SIG_IGN); 2117 #endif 2118 2119 #ifdef FEAT_GUI 2120 if (gui.in_use) 2121 { 2122 gui.dying = TRUE; 2123 out_trash(); // trash any pending output 2124 } 2125 else 2126 #endif 2127 { 2128 windgoto((int)Rows - 1, 0); 2129 2130 /* 2131 * Switch terminal mode back now, so messages end up on the "normal" 2132 * screen (if there are two screens). 2133 */ 2134 settmode(TMODE_COOK); 2135 stoptermcap(); 2136 out_flush(); 2137 } 2138 } 2139 2140 /* 2141 * Preserve files and exit. 2142 * When called IObuff must contain a message. 2143 * NOTE: This may be called from deathtrap() in a signal handler, avoid unsafe 2144 * functions, such as allocating memory. 2145 */ 2146 void 2147 preserve_exit(void) 2148 { 2149 buf_T *buf; 2150 2151 prepare_to_exit(); 2152 2153 // Setting this will prevent free() calls. That avoids calling free() 2154 // recursively when free() was invoked with a bad pointer. 2155 really_exiting = TRUE; 2156 2157 out_str(IObuff); 2158 screen_start(); // don't know where cursor is now 2159 out_flush(); 2160 2161 ml_close_notmod(); // close all not-modified buffers 2162 2163 FOR_ALL_BUFFERS(buf) 2164 { 2165 if (buf->b_ml.ml_mfp != NULL && buf->b_ml.ml_mfp->mf_fname != NULL) 2166 { 2167 OUT_STR("Vim: preserving files...\r\n"); 2168 screen_start(); // don't know where cursor is now 2169 out_flush(); 2170 ml_sync_all(FALSE, FALSE); // preserve all swap files 2171 break; 2172 } 2173 } 2174 2175 ml_close_all(FALSE); // close all memfiles, without deleting 2176 2177 OUT_STR("Vim: Finished.\r\n"); 2178 2179 getout(1); 2180 } 2181 2182 /* 2183 * Check for CTRL-C pressed, but only once in a while. 2184 * Should be used instead of ui_breakcheck() for functions that check for 2185 * each line in the file. Calling ui_breakcheck() each time takes too much 2186 * time, because it can be a system call. 2187 */ 2188 2189 #ifndef BREAKCHECK_SKIP 2190 # define BREAKCHECK_SKIP 1000 2191 #endif 2192 2193 static int breakcheck_count = 0; 2194 2195 void 2196 line_breakcheck(void) 2197 { 2198 if (++breakcheck_count >= BREAKCHECK_SKIP) 2199 { 2200 breakcheck_count = 0; 2201 ui_breakcheck(); 2202 } 2203 } 2204 2205 /* 2206 * Like line_breakcheck() but check 10 times less often. 2207 */ 2208 void 2209 fast_breakcheck(void) 2210 { 2211 if (++breakcheck_count >= BREAKCHECK_SKIP * 10) 2212 { 2213 breakcheck_count = 0; 2214 ui_breakcheck(); 2215 } 2216 } 2217 2218 /* 2219 * Like line_breakcheck() but check 100 times less often. 2220 */ 2221 void 2222 veryfast_breakcheck(void) 2223 { 2224 if (++breakcheck_count >= BREAKCHECK_SKIP * 100) 2225 { 2226 breakcheck_count = 0; 2227 ui_breakcheck(); 2228 } 2229 } 2230 2231 #if defined(VIM_BACKTICK) || defined(FEAT_EVAL) \ 2232 || (defined(HAVE_LOCALE_H) || defined(X_LOCALE)) \ 2233 || defined(PROTO) 2234 2235 #ifndef SEEK_SET 2236 # define SEEK_SET 0 2237 #endif 2238 #ifndef SEEK_END 2239 # define SEEK_END 2 2240 #endif 2241 2242 /* 2243 * Get the stdout of an external command. 2244 * If "ret_len" is NULL replace NUL characters with NL. When "ret_len" is not 2245 * NULL store the length there. 2246 * Returns an allocated string, or NULL for error. 2247 */ 2248 char_u * 2249 get_cmd_output( 2250 char_u *cmd, 2251 char_u *infile, // optional input file name 2252 int flags, // can be SHELL_SILENT 2253 int *ret_len) 2254 { 2255 char_u *tempname; 2256 char_u *command; 2257 char_u *buffer = NULL; 2258 int len; 2259 int i = 0; 2260 FILE *fd; 2261 2262 if (check_restricted() || check_secure()) 2263 return NULL; 2264 2265 // get a name for the temp file 2266 if ((tempname = vim_tempname('o', FALSE)) == NULL) 2267 { 2268 emsg(_(e_notmp)); 2269 return NULL; 2270 } 2271 2272 // Add the redirection stuff 2273 command = make_filter_cmd(cmd, infile, tempname); 2274 if (command == NULL) 2275 goto done; 2276 2277 /* 2278 * Call the shell to execute the command (errors are ignored). 2279 * Don't check timestamps here. 2280 */ 2281 ++no_check_timestamps; 2282 call_shell(command, SHELL_DOOUT | SHELL_EXPAND | flags); 2283 --no_check_timestamps; 2284 2285 vim_free(command); 2286 2287 /* 2288 * read the names from the file into memory 2289 */ 2290 # ifdef VMS 2291 // created temporary file is not always readable as binary 2292 fd = mch_fopen((char *)tempname, "r"); 2293 # else 2294 fd = mch_fopen((char *)tempname, READBIN); 2295 # endif 2296 2297 if (fd == NULL) 2298 { 2299 semsg(_(e_notopen), tempname); 2300 goto done; 2301 } 2302 2303 fseek(fd, 0L, SEEK_END); 2304 len = ftell(fd); // get size of temp file 2305 fseek(fd, 0L, SEEK_SET); 2306 2307 buffer = alloc(len + 1); 2308 if (buffer != NULL) 2309 i = (int)fread((char *)buffer, (size_t)1, (size_t)len, fd); 2310 fclose(fd); 2311 mch_remove(tempname); 2312 if (buffer == NULL) 2313 goto done; 2314 #ifdef VMS 2315 len = i; // VMS doesn't give us what we asked for... 2316 #endif 2317 if (i != len) 2318 { 2319 semsg(_(e_notread), tempname); 2320 VIM_CLEAR(buffer); 2321 } 2322 else if (ret_len == NULL) 2323 { 2324 // Change NUL into SOH, otherwise the string is truncated. 2325 for (i = 0; i < len; ++i) 2326 if (buffer[i] == NUL) 2327 buffer[i] = 1; 2328 2329 buffer[len] = NUL; // make sure the buffer is terminated 2330 } 2331 else 2332 *ret_len = len; 2333 2334 done: 2335 vim_free(tempname); 2336 return buffer; 2337 } 2338 2339 # if defined(FEAT_EVAL) || defined(PROTO) 2340 2341 static void 2342 get_cmd_output_as_rettv( 2343 typval_T *argvars, 2344 typval_T *rettv, 2345 int retlist) 2346 { 2347 char_u *res = NULL; 2348 char_u *p; 2349 char_u *infile = NULL; 2350 int err = FALSE; 2351 FILE *fd; 2352 list_T *list = NULL; 2353 int flags = SHELL_SILENT; 2354 2355 rettv->v_type = VAR_STRING; 2356 rettv->vval.v_string = NULL; 2357 if (check_restricted() || check_secure()) 2358 goto errret; 2359 2360 if (in_vim9script() 2361 && (check_for_string_arg(argvars, 0) == FAIL 2362 || check_for_string_or_number_or_list_arg(argvars, 1) == FAIL)) 2363 return; 2364 2365 if (argvars[1].v_type != VAR_UNKNOWN) 2366 { 2367 /* 2368 * Write the text to a temp file, to be used for input of the shell 2369 * command. 2370 */ 2371 if ((infile = vim_tempname('i', TRUE)) == NULL) 2372 { 2373 emsg(_(e_notmp)); 2374 goto errret; 2375 } 2376 2377 fd = mch_fopen((char *)infile, WRITEBIN); 2378 if (fd == NULL) 2379 { 2380 semsg(_(e_notopen), infile); 2381 goto errret; 2382 } 2383 if (argvars[1].v_type == VAR_NUMBER) 2384 { 2385 linenr_T lnum; 2386 buf_T *buf; 2387 2388 buf = buflist_findnr(argvars[1].vval.v_number); 2389 if (buf == NULL) 2390 { 2391 semsg(_(e_nobufnr), argvars[1].vval.v_number); 2392 fclose(fd); 2393 goto errret; 2394 } 2395 2396 for (lnum = 1; lnum <= buf->b_ml.ml_line_count; lnum++) 2397 { 2398 for (p = ml_get_buf(buf, lnum, FALSE); *p != NUL; ++p) 2399 if (putc(*p == '\n' ? NUL : *p, fd) == EOF) 2400 { 2401 err = TRUE; 2402 break; 2403 } 2404 if (putc(NL, fd) == EOF) 2405 { 2406 err = TRUE; 2407 break; 2408 } 2409 } 2410 } 2411 else if (argvars[1].v_type == VAR_LIST) 2412 { 2413 if (write_list(fd, argvars[1].vval.v_list, TRUE) == FAIL) 2414 err = TRUE; 2415 } 2416 else 2417 { 2418 size_t len; 2419 char_u buf[NUMBUFLEN]; 2420 2421 p = tv_get_string_buf_chk(&argvars[1], buf); 2422 if (p == NULL) 2423 { 2424 fclose(fd); 2425 goto errret; // type error; errmsg already given 2426 } 2427 len = STRLEN(p); 2428 if (len > 0 && fwrite(p, len, 1, fd) != 1) 2429 err = TRUE; 2430 } 2431 if (fclose(fd) != 0) 2432 err = TRUE; 2433 if (err) 2434 { 2435 emsg(_("E677: Error writing temp file")); 2436 goto errret; 2437 } 2438 } 2439 2440 // Omit SHELL_COOKED when invoked with ":silent". Avoids that the shell 2441 // echoes typeahead, that messes up the display. 2442 if (!msg_silent) 2443 flags += SHELL_COOKED; 2444 2445 if (retlist) 2446 { 2447 int len; 2448 listitem_T *li; 2449 char_u *s = NULL; 2450 char_u *start; 2451 char_u *end; 2452 int i; 2453 2454 res = get_cmd_output(tv_get_string(&argvars[0]), infile, flags, &len); 2455 if (res == NULL) 2456 goto errret; 2457 2458 list = list_alloc(); 2459 if (list == NULL) 2460 goto errret; 2461 2462 for (i = 0; i < len; ++i) 2463 { 2464 start = res + i; 2465 while (i < len && res[i] != NL) 2466 ++i; 2467 end = res + i; 2468 2469 s = alloc(end - start + 1); 2470 if (s == NULL) 2471 goto errret; 2472 2473 for (p = s; start < end; ++p, ++start) 2474 *p = *start == NUL ? NL : *start; 2475 *p = NUL; 2476 2477 li = listitem_alloc(); 2478 if (li == NULL) 2479 { 2480 vim_free(s); 2481 goto errret; 2482 } 2483 li->li_tv.v_type = VAR_STRING; 2484 li->li_tv.v_lock = 0; 2485 li->li_tv.vval.v_string = s; 2486 list_append(list, li); 2487 } 2488 2489 rettv_list_set(rettv, list); 2490 list = NULL; 2491 } 2492 else 2493 { 2494 res = get_cmd_output(tv_get_string(&argvars[0]), infile, flags, NULL); 2495 #ifdef USE_CRNL 2496 // translate <CR><NL> into <NL> 2497 if (res != NULL) 2498 { 2499 char_u *s, *d; 2500 2501 d = res; 2502 for (s = res; *s; ++s) 2503 { 2504 if (s[0] == CAR && s[1] == NL) 2505 ++s; 2506 *d++ = *s; 2507 } 2508 *d = NUL; 2509 } 2510 #endif 2511 rettv->vval.v_string = res; 2512 res = NULL; 2513 } 2514 2515 errret: 2516 if (infile != NULL) 2517 { 2518 mch_remove(infile); 2519 vim_free(infile); 2520 } 2521 if (res != NULL) 2522 vim_free(res); 2523 if (list != NULL) 2524 list_free(list); 2525 } 2526 2527 /* 2528 * "system()" function 2529 */ 2530 void 2531 f_system(typval_T *argvars, typval_T *rettv) 2532 { 2533 get_cmd_output_as_rettv(argvars, rettv, FALSE); 2534 } 2535 2536 /* 2537 * "systemlist()" function 2538 */ 2539 void 2540 f_systemlist(typval_T *argvars, typval_T *rettv) 2541 { 2542 get_cmd_output_as_rettv(argvars, rettv, TRUE); 2543 } 2544 # endif // FEAT_EVAL 2545 2546 #endif 2547 2548 /* 2549 * Return TRUE when need to go to Insert mode because of 'insertmode'. 2550 * Don't do this when still processing a command or a mapping. 2551 * Don't do this when inside a ":normal" command. 2552 */ 2553 int 2554 goto_im(void) 2555 { 2556 return (p_im && stuff_empty() && typebuf_typed()); 2557 } 2558 2559 /* 2560 * Returns the isolated name of the shell in allocated memory: 2561 * - Skip beyond any path. E.g., "/usr/bin/csh -f" -> "csh -f". 2562 * - Remove any argument. E.g., "csh -f" -> "csh". 2563 * But don't allow a space in the path, so that this works: 2564 * "/usr/bin/csh --rcfile ~/.cshrc" 2565 * But don't do that for Windows, it's common to have a space in the path. 2566 * Returns NULL when out of memory. 2567 */ 2568 char_u * 2569 get_isolated_shell_name(void) 2570 { 2571 char_u *p; 2572 2573 #ifdef MSWIN 2574 p = gettail(p_sh); 2575 p = vim_strnsave(p, skiptowhite(p) - p); 2576 #else 2577 p = skiptowhite(p_sh); 2578 if (*p == NUL) 2579 { 2580 // No white space, use the tail. 2581 p = vim_strsave(gettail(p_sh)); 2582 } 2583 else 2584 { 2585 char_u *p1, *p2; 2586 2587 // Find the last path separator before the space. 2588 p1 = p_sh; 2589 for (p2 = p_sh; p2 < p; MB_PTR_ADV(p2)) 2590 if (vim_ispathsep(*p2)) 2591 p1 = p2 + 1; 2592 p = vim_strnsave(p1, p - p1); 2593 } 2594 #endif 2595 return p; 2596 } 2597 2598 /* 2599 * Check if the "://" of a URL is at the pointer, return URL_SLASH. 2600 * Also check for ":\\", which MS Internet Explorer accepts, return 2601 * URL_BACKSLASH. 2602 */ 2603 int 2604 path_is_url(char_u *p) 2605 { 2606 if (STRNCMP(p, "://", (size_t)3) == 0) 2607 return URL_SLASH; 2608 else if (STRNCMP(p, ":\\\\", (size_t)3) == 0) 2609 return URL_BACKSLASH; 2610 return 0; 2611 } 2612 2613 /* 2614 * Check if "fname" starts with "name://" or "name:\\". 2615 * Return URL_SLASH for "name://", URL_BACKSLASH for "name:\\". 2616 * Return zero otherwise. 2617 */ 2618 int 2619 path_with_url(char_u *fname) 2620 { 2621 char_u *p; 2622 2623 // We accept alphabetic characters and a dash in scheme part. 2624 // RFC 3986 allows for more, but it increases the risk of matching 2625 // non-URL text. 2626 2627 // first character must be alpha 2628 if (!isalpha(*fname)) 2629 return 0; 2630 2631 // check body: alpha or dash 2632 for (p = fname; (isalpha(*p) || (*p == '-')); ++p) 2633 ; 2634 2635 // check last char is not a dash 2636 if (p[-1] == '-') 2637 return 0; 2638 2639 // "://" or ":\\" must follow 2640 return path_is_url(p); 2641 } 2642