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 CLEAR_FIELD(buf); 636 637 if (time_for_testing == 93784) 638 { 639 // Testing the two-character code. 640 buf[0] = 'x'; 641 buf[1] = '!'; 642 } 643 #ifdef FEAT_TERMINAL 644 else if (term_use_loop()) 645 buf[0] = 't'; 646 #endif 647 else if (VIsual_active) 648 { 649 if (VIsual_select) 650 buf[0] = VIsual_mode + 's' - 'v'; 651 else 652 buf[0] = VIsual_mode; 653 } 654 else if (State == HITRETURN || State == ASKMORE || State == SETWSIZE 655 || State == CONFIRM) 656 { 657 buf[0] = 'r'; 658 if (State == ASKMORE) 659 buf[1] = 'm'; 660 else if (State == CONFIRM) 661 buf[1] = '?'; 662 } 663 else if (State == EXTERNCMD) 664 buf[0] = '!'; 665 else if (State & INSERT) 666 { 667 if (State & VREPLACE_FLAG) 668 { 669 buf[0] = 'R'; 670 buf[1] = 'v'; 671 } 672 else 673 { 674 if (State & REPLACE_FLAG) 675 buf[0] = 'R'; 676 else 677 buf[0] = 'i'; 678 if (ins_compl_active()) 679 buf[1] = 'c'; 680 else if (ctrl_x_mode_not_defined_yet()) 681 buf[1] = 'x'; 682 } 683 } 684 else if ((State & CMDLINE) || exmode_active) 685 { 686 buf[0] = 'c'; 687 if (exmode_active == EXMODE_VIM) 688 buf[1] = 'v'; 689 else if (exmode_active == EXMODE_NORMAL) 690 buf[1] = 'e'; 691 } 692 else 693 { 694 buf[0] = 'n'; 695 if (finish_op) 696 { 697 buf[1] = 'o'; 698 // to be able to detect force-linewise/blockwise/characterwise operations 699 buf[2] = motion_force; 700 } 701 else if (restart_edit == 'I' || restart_edit == 'R' 702 || restart_edit == 'V') 703 { 704 buf[1] = 'i'; 705 buf[2] = restart_edit; 706 } 707 } 708 709 // Clear out the minor mode when the argument is not a non-zero number or 710 // non-empty string. 711 if (!non_zero_arg(&argvars[0])) 712 buf[1] = NUL; 713 714 rettv->vval.v_string = vim_strsave(buf); 715 rettv->v_type = VAR_STRING; 716 } 717 718 static void 719 may_add_state_char(garray_T *gap, char_u *include, int c) 720 { 721 if (include == NULL || vim_strchr(include, c) != NULL) 722 ga_append(gap, c); 723 } 724 725 /* 726 * "state()" function 727 */ 728 void 729 f_state(typval_T *argvars, typval_T *rettv) 730 { 731 garray_T ga; 732 char_u *include = NULL; 733 int i; 734 735 ga_init2(&ga, 1, 20); 736 if (argvars[0].v_type != VAR_UNKNOWN) 737 include = tv_get_string(&argvars[0]); 738 739 if (!(stuff_empty() && typebuf.tb_len == 0 && scriptin[curscript] == NULL)) 740 may_add_state_char(&ga, include, 'm'); 741 if (op_pending()) 742 may_add_state_char(&ga, include, 'o'); 743 if (autocmd_busy) 744 may_add_state_char(&ga, include, 'x'); 745 if (ins_compl_active()) 746 may_add_state_char(&ga, include, 'a'); 747 748 # ifdef FEAT_JOB_CHANNEL 749 if (channel_in_blocking_wait()) 750 may_add_state_char(&ga, include, 'w'); 751 # endif 752 if (!get_was_safe_state()) 753 may_add_state_char(&ga, include, 'S'); 754 for (i = 0; i < get_callback_depth() && i < 3; ++i) 755 may_add_state_char(&ga, include, 'c'); 756 if (msg_scrolled > 0) 757 may_add_state_char(&ga, include, 's'); 758 759 rettv->v_type = VAR_STRING; 760 rettv->vval.v_string = ga.ga_data; 761 } 762 763 #endif // FEAT_EVAL 764 765 /* 766 * Get a key stroke directly from the user. 767 * Ignores mouse clicks and scrollbar events, except a click for the left 768 * button (used at the more prompt). 769 * Doesn't use vgetc(), because it syncs undo and eats mapped characters. 770 * Disadvantage: typeahead is ignored. 771 * Translates the interrupt character for unix to ESC. 772 */ 773 int 774 get_keystroke(void) 775 { 776 char_u *buf = NULL; 777 int buflen = 150; 778 int maxlen; 779 int len = 0; 780 int n; 781 int save_mapped_ctrl_c = mapped_ctrl_c; 782 int waited = 0; 783 784 mapped_ctrl_c = FALSE; // mappings are not used here 785 for (;;) 786 { 787 cursor_on(); 788 out_flush(); 789 790 // Leave some room for check_termcode() to insert a key code into (max 791 // 5 chars plus NUL). And fix_input_buffer() can triple the number of 792 // bytes. 793 maxlen = (buflen - 6 - len) / 3; 794 if (buf == NULL) 795 buf = alloc(buflen); 796 else if (maxlen < 10) 797 { 798 char_u *t_buf = buf; 799 800 // Need some more space. This might happen when receiving a long 801 // escape sequence. 802 buflen += 100; 803 buf = vim_realloc(buf, buflen); 804 if (buf == NULL) 805 vim_free(t_buf); 806 maxlen = (buflen - 6 - len) / 3; 807 } 808 if (buf == NULL) 809 { 810 do_outofmem_msg((long_u)buflen); 811 return ESC; // panic! 812 } 813 814 // First time: blocking wait. Second time: wait up to 100ms for a 815 // terminal code to complete. 816 n = ui_inchar(buf + len, maxlen, len == 0 ? -1L : 100L, 0); 817 if (n > 0) 818 { 819 // Replace zero and CSI by a special key code. 820 n = fix_input_buffer(buf + len, n); 821 len += n; 822 waited = 0; 823 } 824 else if (len > 0) 825 ++waited; // keep track of the waiting time 826 827 // Incomplete termcode and not timed out yet: get more characters 828 if ((n = check_termcode(1, buf, buflen, &len)) < 0 829 && (!p_ttimeout || waited * 100L < (p_ttm < 0 ? p_tm : p_ttm))) 830 continue; 831 832 if (n == KEYLEN_REMOVED) // key code removed 833 { 834 if (must_redraw != 0 && !need_wait_return && (State & CMDLINE) == 0) 835 { 836 // Redrawing was postponed, do it now. 837 update_screen(0); 838 setcursor(); // put cursor back where it belongs 839 } 840 continue; 841 } 842 if (n > 0) // found a termcode: adjust length 843 len = n; 844 if (len == 0) // nothing typed yet 845 continue; 846 847 // Handle modifier and/or special key code. 848 n = buf[0]; 849 if (n == K_SPECIAL) 850 { 851 n = TO_SPECIAL(buf[1], buf[2]); 852 if (buf[1] == KS_MODIFIER 853 || n == K_IGNORE 854 || (is_mouse_key(n) && n != K_LEFTMOUSE) 855 #ifdef FEAT_GUI 856 || n == K_VER_SCROLLBAR 857 || n == K_HOR_SCROLLBAR 858 #endif 859 ) 860 { 861 if (buf[1] == KS_MODIFIER) 862 mod_mask = buf[2]; 863 len -= 3; 864 if (len > 0) 865 mch_memmove(buf, buf + 3, (size_t)len); 866 continue; 867 } 868 break; 869 } 870 if (has_mbyte) 871 { 872 if (MB_BYTE2LEN(n) > len) 873 continue; // more bytes to get 874 buf[len >= buflen ? buflen - 1 : len] = NUL; 875 n = (*mb_ptr2char)(buf); 876 } 877 #ifdef UNIX 878 if (n == intr_char) 879 n = ESC; 880 #endif 881 break; 882 } 883 vim_free(buf); 884 885 mapped_ctrl_c = save_mapped_ctrl_c; 886 return n; 887 } 888 889 /* 890 * Get a number from the user. 891 * When "mouse_used" is not NULL allow using the mouse. 892 */ 893 int 894 get_number( 895 int colon, // allow colon to abort 896 int *mouse_used) 897 { 898 int n = 0; 899 int c; 900 int typed = 0; 901 902 if (mouse_used != NULL) 903 *mouse_used = FALSE; 904 905 // When not printing messages, the user won't know what to type, return a 906 // zero (as if CR was hit). 907 if (msg_silent != 0) 908 return 0; 909 910 #ifdef USE_ON_FLY_SCROLL 911 dont_scroll = TRUE; // disallow scrolling here 912 #endif 913 ++no_mapping; 914 ++allow_keys; // no mapping here, but recognize keys 915 for (;;) 916 { 917 windgoto(msg_row, msg_col); 918 c = safe_vgetc(); 919 if (VIM_ISDIGIT(c)) 920 { 921 n = n * 10 + c - '0'; 922 msg_putchar(c); 923 ++typed; 924 } 925 else if (c == K_DEL || c == K_KDEL || c == K_BS || c == Ctrl_H) 926 { 927 if (typed > 0) 928 { 929 msg_puts("\b \b"); 930 --typed; 931 } 932 n /= 10; 933 } 934 else if (mouse_used != NULL && c == K_LEFTMOUSE) 935 { 936 *mouse_used = TRUE; 937 n = mouse_row + 1; 938 break; 939 } 940 else if (n == 0 && c == ':' && colon) 941 { 942 stuffcharReadbuff(':'); 943 if (!exmode_active) 944 cmdline_row = msg_row; 945 skip_redraw = TRUE; // skip redraw once 946 do_redraw = FALSE; 947 break; 948 } 949 else if (c == Ctrl_C || c == ESC || c == 'q') 950 { 951 n = 0; 952 break; 953 } 954 else if (c == CAR || c == NL ) 955 break; 956 } 957 --no_mapping; 958 --allow_keys; 959 return n; 960 } 961 962 /* 963 * Ask the user to enter a number. 964 * When "mouse_used" is not NULL allow using the mouse and in that case return 965 * the line number. 966 */ 967 int 968 prompt_for_number(int *mouse_used) 969 { 970 int i; 971 int save_cmdline_row; 972 int save_State; 973 974 // When using ":silent" assume that <CR> was entered. 975 if (mouse_used != NULL) 976 msg_puts(_("Type number and <Enter> or click with the mouse (q or empty cancels): ")); 977 else 978 msg_puts(_("Type number and <Enter> (q or empty cancels): ")); 979 980 // Set the state such that text can be selected/copied/pasted and we still 981 // get mouse events. redraw_after_callback() will not redraw if cmdline_row 982 // is zero. 983 save_cmdline_row = cmdline_row; 984 cmdline_row = 0; 985 save_State = State; 986 State = CMDLINE; 987 // May show different mouse shape. 988 setmouse(); 989 990 i = get_number(TRUE, mouse_used); 991 if (KeyTyped) 992 { 993 // don't call wait_return() now 994 if (msg_row > 0) 995 cmdline_row = msg_row - 1; 996 need_wait_return = FALSE; 997 msg_didany = FALSE; 998 msg_didout = FALSE; 999 } 1000 else 1001 cmdline_row = save_cmdline_row; 1002 State = save_State; 1003 // May need to restore mouse shape. 1004 setmouse(); 1005 1006 return i; 1007 } 1008 1009 void 1010 msgmore(long n) 1011 { 1012 long pn; 1013 1014 if (global_busy // no messages now, wait until global is finished 1015 || !messaging()) // 'lazyredraw' set, don't do messages now 1016 return; 1017 1018 // We don't want to overwrite another important message, but do overwrite 1019 // a previous "more lines" or "fewer lines" message, so that "5dd" and 1020 // then "put" reports the last action. 1021 if (keep_msg != NULL && !keep_msg_more) 1022 return; 1023 1024 if (n > 0) 1025 pn = n; 1026 else 1027 pn = -n; 1028 1029 if (pn > p_report) 1030 { 1031 if (n > 0) 1032 vim_snprintf(msg_buf, MSG_BUF_LEN, 1033 NGETTEXT("%ld more line", "%ld more lines", pn), pn); 1034 else 1035 vim_snprintf(msg_buf, MSG_BUF_LEN, 1036 NGETTEXT("%ld line less", "%ld fewer lines", pn), pn); 1037 if (got_int) 1038 vim_strcat((char_u *)msg_buf, (char_u *)_(" (Interrupted)"), 1039 MSG_BUF_LEN); 1040 if (msg(msg_buf)) 1041 { 1042 set_keep_msg((char_u *)msg_buf, 0); 1043 keep_msg_more = TRUE; 1044 } 1045 } 1046 } 1047 1048 /* 1049 * flush map and typeahead buffers and give a warning for an error 1050 */ 1051 void 1052 beep_flush(void) 1053 { 1054 if (emsg_silent == 0) 1055 { 1056 flush_buffers(FLUSH_MINIMAL); 1057 vim_beep(BO_ERROR); 1058 } 1059 } 1060 1061 /* 1062 * Give a warning for an error. 1063 */ 1064 void 1065 vim_beep( 1066 unsigned val) // one of the BO_ values, e.g., BO_OPER 1067 { 1068 #ifdef FEAT_EVAL 1069 called_vim_beep = TRUE; 1070 #endif 1071 1072 if (emsg_silent == 0 && !in_assert_fails) 1073 { 1074 if (!((bo_flags & val) || (bo_flags & BO_ALL))) 1075 { 1076 #ifdef ELAPSED_FUNC 1077 static int did_init = FALSE; 1078 static elapsed_T start_tv; 1079 1080 // Only beep once per half a second, otherwise a sequence of beeps 1081 // would freeze Vim. 1082 if (!did_init || ELAPSED_FUNC(start_tv) > 500) 1083 { 1084 did_init = TRUE; 1085 ELAPSED_INIT(start_tv); 1086 #endif 1087 if (p_vb 1088 #ifdef FEAT_GUI 1089 // While the GUI is starting up the termcap is set for 1090 // the GUI but the output still goes to a terminal. 1091 && !(gui.in_use && gui.starting) 1092 #endif 1093 ) 1094 { 1095 out_str_cf(T_VB); 1096 #ifdef FEAT_VTP 1097 // No restore color information, refresh the screen. 1098 if (has_vtp_working() != 0 1099 # ifdef FEAT_TERMGUICOLORS 1100 && (p_tgc || (!p_tgc && t_colors >= 256)) 1101 # endif 1102 ) 1103 { 1104 redraw_later(CLEAR); 1105 update_screen(0); 1106 redrawcmd(); 1107 } 1108 #endif 1109 } 1110 else 1111 out_char(BELL); 1112 #ifdef ELAPSED_FUNC 1113 } 1114 #endif 1115 } 1116 1117 // When 'debug' contains "beep" produce a message. If we are sourcing 1118 // a script or executing a function give the user a hint where the beep 1119 // comes from. 1120 if (vim_strchr(p_debug, 'e') != NULL) 1121 { 1122 msg_source(HL_ATTR(HLF_W)); 1123 msg_attr(_("Beep!"), HL_ATTR(HLF_W)); 1124 } 1125 } 1126 } 1127 1128 /* 1129 * To get the "real" home directory: 1130 * - get value of $HOME 1131 * For Unix: 1132 * - go to that directory 1133 * - do mch_dirname() to get the real name of that directory. 1134 * This also works with mounts and links. 1135 * Don't do this for MS-DOS, it will change the "current dir" for a drive. 1136 * For Windows: 1137 * This code is duplicated in init_homedir() in dosinst.c. Keep in sync! 1138 */ 1139 void 1140 init_homedir(void) 1141 { 1142 char_u *var; 1143 1144 // In case we are called a second time (when 'encoding' changes). 1145 VIM_CLEAR(homedir); 1146 1147 #ifdef VMS 1148 var = mch_getenv((char_u *)"SYS$LOGIN"); 1149 #else 1150 var = mch_getenv((char_u *)"HOME"); 1151 #endif 1152 1153 #ifdef MSWIN 1154 /* 1155 * Typically, $HOME is not defined on Windows, unless the user has 1156 * specifically defined it for Vim's sake. However, on Windows NT 1157 * platforms, $HOMEDRIVE and $HOMEPATH are automatically defined for 1158 * each user. Try constructing $HOME from these. 1159 */ 1160 if (var == NULL || *var == NUL) 1161 { 1162 char_u *homedrive, *homepath; 1163 1164 homedrive = mch_getenv((char_u *)"HOMEDRIVE"); 1165 homepath = mch_getenv((char_u *)"HOMEPATH"); 1166 if (homepath == NULL || *homepath == NUL) 1167 homepath = (char_u *)"\\"; 1168 if (homedrive != NULL 1169 && STRLEN(homedrive) + STRLEN(homepath) < MAXPATHL) 1170 { 1171 sprintf((char *)NameBuff, "%s%s", homedrive, homepath); 1172 if (NameBuff[0] != NUL) 1173 var = NameBuff; 1174 } 1175 } 1176 1177 if (var == NULL) 1178 var = mch_getenv((char_u *)"USERPROFILE"); 1179 1180 /* 1181 * Weird but true: $HOME may contain an indirect reference to another 1182 * variable, esp. "%USERPROFILE%". Happens when $USERPROFILE isn't set 1183 * when $HOME is being set. 1184 */ 1185 if (var != NULL && *var == '%') 1186 { 1187 char_u *p; 1188 char_u *exp; 1189 1190 p = vim_strchr(var + 1, '%'); 1191 if (p != NULL) 1192 { 1193 vim_strncpy(NameBuff, var + 1, p - (var + 1)); 1194 exp = mch_getenv(NameBuff); 1195 if (exp != NULL && *exp != NUL 1196 && STRLEN(exp) + STRLEN(p) < MAXPATHL) 1197 { 1198 vim_snprintf((char *)NameBuff, MAXPATHL, "%s%s", exp, p + 1); 1199 var = NameBuff; 1200 } 1201 } 1202 } 1203 1204 if (var != NULL && *var == NUL) // empty is same as not set 1205 var = NULL; 1206 1207 if (enc_utf8 && var != NULL) 1208 { 1209 int len; 1210 char_u *pp = NULL; 1211 1212 // Convert from active codepage to UTF-8. Other conversions are 1213 // not done, because they would fail for non-ASCII characters. 1214 acp_to_enc(var, (int)STRLEN(var), &pp, &len); 1215 if (pp != NULL) 1216 { 1217 homedir = pp; 1218 return; 1219 } 1220 } 1221 1222 /* 1223 * Default home dir is C:/ 1224 * Best assumption we can make in such a situation. 1225 */ 1226 if (var == NULL) 1227 var = (char_u *)"C:/"; 1228 #endif 1229 1230 if (var != NULL) 1231 { 1232 #ifdef UNIX 1233 /* 1234 * Change to the directory and get the actual path. This resolves 1235 * links. Don't do it when we can't return. 1236 */ 1237 if (mch_dirname(NameBuff, MAXPATHL) == OK 1238 && mch_chdir((char *)NameBuff) == 0) 1239 { 1240 if (!mch_chdir((char *)var) && mch_dirname(IObuff, IOSIZE) == OK) 1241 var = IObuff; 1242 if (mch_chdir((char *)NameBuff) != 0) 1243 emsg(_(e_prev_dir)); 1244 } 1245 #endif 1246 homedir = vim_strsave(var); 1247 } 1248 } 1249 1250 #if defined(EXITFREE) || defined(PROTO) 1251 void 1252 free_homedir(void) 1253 { 1254 vim_free(homedir); 1255 } 1256 1257 void 1258 free_users(void) 1259 { 1260 ga_clear_strings(&ga_users); 1261 } 1262 #endif 1263 1264 /* 1265 * Call expand_env() and store the result in an allocated string. 1266 * This is not very memory efficient, this expects the result to be freed 1267 * again soon. 1268 */ 1269 char_u * 1270 expand_env_save(char_u *src) 1271 { 1272 return expand_env_save_opt(src, FALSE); 1273 } 1274 1275 /* 1276 * Idem, but when "one" is TRUE handle the string as one file name, only 1277 * expand "~" at the start. 1278 */ 1279 char_u * 1280 expand_env_save_opt(char_u *src, int one) 1281 { 1282 char_u *p; 1283 1284 p = alloc(MAXPATHL); 1285 if (p != NULL) 1286 expand_env_esc(src, p, MAXPATHL, FALSE, one, NULL); 1287 return p; 1288 } 1289 1290 /* 1291 * Expand environment variable with path name. 1292 * "~/" is also expanded, using $HOME. For Unix "~user/" is expanded. 1293 * Skips over "\ ", "\~" and "\$" (not for Win32 though). 1294 * If anything fails no expansion is done and dst equals src. 1295 */ 1296 void 1297 expand_env( 1298 char_u *src, // input string e.g. "$HOME/vim.hlp" 1299 char_u *dst, // where to put the result 1300 int dstlen) // maximum length of the result 1301 { 1302 expand_env_esc(src, dst, dstlen, FALSE, FALSE, NULL); 1303 } 1304 1305 void 1306 expand_env_esc( 1307 char_u *srcp, // input string e.g. "$HOME/vim.hlp" 1308 char_u *dst, // where to put the result 1309 int dstlen, // maximum length of the result 1310 int esc, // escape spaces in expanded variables 1311 int one, // "srcp" is one file name 1312 char_u *startstr) // start again after this (can be NULL) 1313 { 1314 char_u *src; 1315 char_u *tail; 1316 int c; 1317 char_u *var; 1318 int copy_char; 1319 int mustfree; // var was allocated, need to free it later 1320 int at_start = TRUE; // at start of a name 1321 int startstr_len = 0; 1322 1323 if (startstr != NULL) 1324 startstr_len = (int)STRLEN(startstr); 1325 1326 src = skipwhite(srcp); 1327 --dstlen; // leave one char space for "\," 1328 while (*src && dstlen > 0) 1329 { 1330 #ifdef FEAT_EVAL 1331 // Skip over `=expr`. 1332 if (src[0] == '`' && src[1] == '=') 1333 { 1334 size_t len; 1335 1336 var = src; 1337 src += 2; 1338 (void)skip_expr(&src, NULL); 1339 if (*src == '`') 1340 ++src; 1341 len = src - var; 1342 if (len > (size_t)dstlen) 1343 len = dstlen; 1344 vim_strncpy(dst, var, len); 1345 dst += len; 1346 dstlen -= (int)len; 1347 continue; 1348 } 1349 #endif 1350 copy_char = TRUE; 1351 if ((*src == '$' 1352 #ifdef VMS 1353 && at_start 1354 #endif 1355 ) 1356 #if defined(MSWIN) 1357 || *src == '%' 1358 #endif 1359 || (*src == '~' && at_start)) 1360 { 1361 mustfree = FALSE; 1362 1363 /* 1364 * The variable name is copied into dst temporarily, because it may 1365 * be a string in read-only memory and a NUL needs to be appended. 1366 */ 1367 if (*src != '~') // environment var 1368 { 1369 tail = src + 1; 1370 var = dst; 1371 c = dstlen - 1; 1372 1373 #ifdef UNIX 1374 // Unix has ${var-name} type environment vars 1375 if (*tail == '{' && !vim_isIDc('{')) 1376 { 1377 tail++; // ignore '{' 1378 while (c-- > 0 && *tail && *tail != '}') 1379 *var++ = *tail++; 1380 } 1381 else 1382 #endif 1383 { 1384 while (c-- > 0 && *tail != NUL && ((vim_isIDc(*tail)) 1385 #if defined(MSWIN) 1386 || (*src == '%' && *tail != '%') 1387 #endif 1388 )) 1389 *var++ = *tail++; 1390 } 1391 1392 #if defined(MSWIN) || defined(UNIX) 1393 # ifdef UNIX 1394 if (src[1] == '{' && *tail != '}') 1395 # else 1396 if (*src == '%' && *tail != '%') 1397 # endif 1398 var = NULL; 1399 else 1400 { 1401 # ifdef UNIX 1402 if (src[1] == '{') 1403 # else 1404 if (*src == '%') 1405 #endif 1406 ++tail; 1407 #endif 1408 *var = NUL; 1409 var = vim_getenv(dst, &mustfree); 1410 #if defined(MSWIN) || defined(UNIX) 1411 } 1412 #endif 1413 } 1414 // home directory 1415 else if ( src[1] == NUL 1416 || vim_ispathsep(src[1]) 1417 || vim_strchr((char_u *)" ,\t\n", src[1]) != NULL) 1418 { 1419 var = homedir; 1420 tail = src + 1; 1421 } 1422 else // user directory 1423 { 1424 #if defined(UNIX) || (defined(VMS) && defined(USER_HOME)) 1425 /* 1426 * Copy ~user to dst[], so we can put a NUL after it. 1427 */ 1428 tail = src; 1429 var = dst; 1430 c = dstlen - 1; 1431 while ( c-- > 0 1432 && *tail 1433 && vim_isfilec(*tail) 1434 && !vim_ispathsep(*tail)) 1435 *var++ = *tail++; 1436 *var = NUL; 1437 # ifdef UNIX 1438 /* 1439 * If the system supports getpwnam(), use it. 1440 * Otherwise, or if getpwnam() fails, the shell is used to 1441 * expand ~user. This is slower and may fail if the shell 1442 * does not support ~user (old versions of /bin/sh). 1443 */ 1444 # if defined(HAVE_GETPWNAM) && defined(HAVE_PWD_H) 1445 { 1446 // Note: memory allocated by getpwnam() is never freed. 1447 // Calling endpwent() apparently doesn't help. 1448 struct passwd *pw = (*dst == NUL) 1449 ? NULL : getpwnam((char *)dst + 1); 1450 1451 var = (pw == NULL) ? NULL : (char_u *)pw->pw_dir; 1452 } 1453 if (var == NULL) 1454 # endif 1455 { 1456 expand_T xpc; 1457 1458 ExpandInit(&xpc); 1459 xpc.xp_context = EXPAND_FILES; 1460 var = ExpandOne(&xpc, dst, NULL, 1461 WILD_ADD_SLASH|WILD_SILENT, WILD_EXPAND_FREE); 1462 mustfree = TRUE; 1463 } 1464 1465 # else // !UNIX, thus VMS 1466 /* 1467 * USER_HOME is a comma-separated list of 1468 * directories to search for the user account in. 1469 */ 1470 { 1471 char_u test[MAXPATHL], paths[MAXPATHL]; 1472 char_u *path, *next_path, *ptr; 1473 stat_T st; 1474 1475 STRCPY(paths, USER_HOME); 1476 next_path = paths; 1477 while (*next_path) 1478 { 1479 for (path = next_path; *next_path && *next_path != ','; 1480 next_path++); 1481 if (*next_path) 1482 *next_path++ = NUL; 1483 STRCPY(test, path); 1484 STRCAT(test, "/"); 1485 STRCAT(test, dst + 1); 1486 if (mch_stat(test, &st) == 0) 1487 { 1488 var = alloc(STRLEN(test) + 1); 1489 STRCPY(var, test); 1490 mustfree = TRUE; 1491 break; 1492 } 1493 } 1494 } 1495 # endif // UNIX 1496 #else 1497 // cannot expand user's home directory, so don't try 1498 var = NULL; 1499 tail = (char_u *)""; // for gcc 1500 #endif // UNIX || VMS 1501 } 1502 1503 #ifdef BACKSLASH_IN_FILENAME 1504 // If 'shellslash' is set change backslashes to forward slashes. 1505 // Can't use slash_adjust(), p_ssl may be set temporarily. 1506 if (p_ssl && var != NULL && vim_strchr(var, '\\') != NULL) 1507 { 1508 char_u *p = vim_strsave(var); 1509 1510 if (p != NULL) 1511 { 1512 if (mustfree) 1513 vim_free(var); 1514 var = p; 1515 mustfree = TRUE; 1516 forward_slash(var); 1517 } 1518 } 1519 #endif 1520 1521 // If "var" contains white space, escape it with a backslash. 1522 // Required for ":e ~/tt" when $HOME includes a space. 1523 if (esc && var != NULL && vim_strpbrk(var, (char_u *)" \t") != NULL) 1524 { 1525 char_u *p = vim_strsave_escaped(var, (char_u *)" \t"); 1526 1527 if (p != NULL) 1528 { 1529 if (mustfree) 1530 vim_free(var); 1531 var = p; 1532 mustfree = TRUE; 1533 } 1534 } 1535 1536 if (var != NULL && *var != NUL 1537 && (STRLEN(var) + STRLEN(tail) + 1 < (unsigned)dstlen)) 1538 { 1539 STRCPY(dst, var); 1540 dstlen -= (int)STRLEN(var); 1541 c = (int)STRLEN(var); 1542 // if var[] ends in a path separator and tail[] starts 1543 // with it, skip a character 1544 if (*var != NUL && after_pathsep(dst, dst + c) 1545 #if defined(BACKSLASH_IN_FILENAME) || defined(AMIGA) 1546 && dst[-1] != ':' 1547 #endif 1548 && vim_ispathsep(*tail)) 1549 ++tail; 1550 dst += c; 1551 src = tail; 1552 copy_char = FALSE; 1553 } 1554 if (mustfree) 1555 vim_free(var); 1556 } 1557 1558 if (copy_char) // copy at least one char 1559 { 1560 /* 1561 * Recognize the start of a new name, for '~'. 1562 * Don't do this when "one" is TRUE, to avoid expanding "~" in 1563 * ":edit foo ~ foo". 1564 */ 1565 at_start = FALSE; 1566 if (src[0] == '\\' && src[1] != NUL) 1567 { 1568 *dst++ = *src++; 1569 --dstlen; 1570 } 1571 else if ((src[0] == ' ' || src[0] == ',') && !one) 1572 at_start = TRUE; 1573 if (dstlen > 0) 1574 { 1575 *dst++ = *src++; 1576 --dstlen; 1577 1578 if (startstr != NULL && src - startstr_len >= srcp 1579 && STRNCMP(src - startstr_len, startstr, 1580 startstr_len) == 0) 1581 at_start = TRUE; 1582 } 1583 } 1584 1585 } 1586 *dst = NUL; 1587 } 1588 1589 /* 1590 * If the string between "p" and "pend" ends in "name/", return "pend" minus 1591 * the length of "name/". Otherwise return "pend". 1592 */ 1593 static char_u * 1594 remove_tail(char_u *p, char_u *pend, char_u *name) 1595 { 1596 int len = (int)STRLEN(name) + 1; 1597 char_u *newend = pend - len; 1598 1599 if (newend >= p 1600 && fnamencmp(newend, name, len - 1) == 0 1601 && (newend == p || after_pathsep(p, newend))) 1602 return newend; 1603 return pend; 1604 } 1605 1606 /* 1607 * Check if the directory "vimdir/<version>" or "vimdir/runtime" exists. 1608 * Return NULL if not, return its name in allocated memory otherwise. 1609 */ 1610 static char_u * 1611 vim_version_dir(char_u *vimdir) 1612 { 1613 char_u *p; 1614 1615 if (vimdir == NULL || *vimdir == NUL) 1616 return NULL; 1617 p = concat_fnames(vimdir, (char_u *)VIM_VERSION_NODOT, TRUE); 1618 if (p != NULL && mch_isdir(p)) 1619 return p; 1620 vim_free(p); 1621 p = concat_fnames(vimdir, (char_u *)RUNTIME_DIRNAME, TRUE); 1622 if (p != NULL && mch_isdir(p)) 1623 return p; 1624 vim_free(p); 1625 return NULL; 1626 } 1627 1628 /* 1629 * Vim's version of getenv(). 1630 * Special handling of $HOME, $VIM and $VIMRUNTIME. 1631 * Also does ACP to 'enc' conversion for Win32. 1632 * "mustfree" is set to TRUE when returned is allocated, it must be 1633 * initialized to FALSE by the caller. 1634 */ 1635 char_u * 1636 vim_getenv(char_u *name, int *mustfree) 1637 { 1638 char_u *p = NULL; 1639 char_u *pend; 1640 int vimruntime; 1641 #ifdef MSWIN 1642 WCHAR *wn, *wp; 1643 1644 // use "C:/" when $HOME is not set 1645 if (STRCMP(name, "HOME") == 0) 1646 return homedir; 1647 1648 // Use Wide function 1649 wn = enc_to_utf16(name, NULL); 1650 if (wn == NULL) 1651 return NULL; 1652 1653 wp = _wgetenv(wn); 1654 vim_free(wn); 1655 1656 if (wp != NULL && *wp == NUL) // empty is the same as not set 1657 wp = NULL; 1658 1659 if (wp != NULL) 1660 { 1661 p = utf16_to_enc(wp, NULL); 1662 if (p == NULL) 1663 return NULL; 1664 1665 *mustfree = TRUE; 1666 return p; 1667 } 1668 #else 1669 p = mch_getenv(name); 1670 if (p != NULL && *p == NUL) // empty is the same as not set 1671 p = NULL; 1672 1673 if (p != NULL) 1674 return p; 1675 1676 # ifdef __HAIKU__ 1677 // special handling for user settings directory... 1678 if (STRCMP(name, "BE_USER_SETTINGS") == 0) 1679 { 1680 static char userSettingsPath[MAXPATHL]; 1681 1682 if (find_directory(B_USER_SETTINGS_DIRECTORY, 0, false, 1683 userSettingsPath, MAXPATHL) == B_OK) 1684 return (char_u *)userSettingsPath; 1685 else 1686 return NULL; 1687 } 1688 # endif 1689 #endif 1690 1691 // handling $VIMRUNTIME and $VIM is below, bail out if it's another name. 1692 vimruntime = (STRCMP(name, "VIMRUNTIME") == 0); 1693 if (!vimruntime && STRCMP(name, "VIM") != 0) 1694 return NULL; 1695 1696 /* 1697 * When expanding $VIMRUNTIME fails, try using $VIM/vim<version> or $VIM. 1698 * Don't do this when default_vimruntime_dir is non-empty. 1699 */ 1700 if (vimruntime 1701 #ifdef HAVE_PATHDEF 1702 && *default_vimruntime_dir == NUL 1703 #endif 1704 ) 1705 { 1706 #ifdef MSWIN 1707 // Use Wide function 1708 wp = _wgetenv(L"VIM"); 1709 if (wp != NULL && *wp == NUL) // empty is the same as not set 1710 wp = NULL; 1711 if (wp != NULL) 1712 { 1713 char_u *q = utf16_to_enc(wp, NULL); 1714 if (q != NULL) 1715 { 1716 p = vim_version_dir(q); 1717 *mustfree = TRUE; 1718 if (p == NULL) 1719 p = q; 1720 } 1721 } 1722 #else 1723 p = mch_getenv((char_u *)"VIM"); 1724 if (p != NULL && *p == NUL) // empty is the same as not set 1725 p = NULL; 1726 if (p != NULL) 1727 { 1728 p = vim_version_dir(p); 1729 if (p != NULL) 1730 *mustfree = TRUE; 1731 else 1732 p = mch_getenv((char_u *)"VIM"); 1733 } 1734 #endif 1735 } 1736 1737 /* 1738 * When expanding $VIM or $VIMRUNTIME fails, try using: 1739 * - the directory name from 'helpfile' (unless it contains '$') 1740 * - the executable name from argv[0] 1741 */ 1742 if (p == NULL) 1743 { 1744 if (p_hf != NULL && vim_strchr(p_hf, '$') == NULL) 1745 p = p_hf; 1746 #ifdef USE_EXE_NAME 1747 /* 1748 * Use the name of the executable, obtained from argv[0]. 1749 */ 1750 else 1751 p = exe_name; 1752 #endif 1753 if (p != NULL) 1754 { 1755 // remove the file name 1756 pend = gettail(p); 1757 1758 // remove "doc/" from 'helpfile', if present 1759 if (p == p_hf) 1760 pend = remove_tail(p, pend, (char_u *)"doc"); 1761 1762 #ifdef USE_EXE_NAME 1763 # ifdef MACOS_X 1764 // remove "MacOS" from exe_name and add "Resources/vim" 1765 if (p == exe_name) 1766 { 1767 char_u *pend1; 1768 char_u *pnew; 1769 1770 pend1 = remove_tail(p, pend, (char_u *)"MacOS"); 1771 if (pend1 != pend) 1772 { 1773 pnew = alloc(pend1 - p + 15); 1774 if (pnew != NULL) 1775 { 1776 STRNCPY(pnew, p, (pend1 - p)); 1777 STRCPY(pnew + (pend1 - p), "Resources/vim"); 1778 p = pnew; 1779 pend = p + STRLEN(p); 1780 } 1781 } 1782 } 1783 # endif 1784 // remove "src/" from exe_name, if present 1785 if (p == exe_name) 1786 pend = remove_tail(p, pend, (char_u *)"src"); 1787 #endif 1788 1789 // for $VIM, remove "runtime/" or "vim54/", if present 1790 if (!vimruntime) 1791 { 1792 pend = remove_tail(p, pend, (char_u *)RUNTIME_DIRNAME); 1793 pend = remove_tail(p, pend, (char_u *)VIM_VERSION_NODOT); 1794 } 1795 1796 // remove trailing path separator 1797 if (pend > p && after_pathsep(p, pend)) 1798 --pend; 1799 1800 #ifdef MACOS_X 1801 if (p == exe_name || p == p_hf) 1802 #endif 1803 // check that the result is a directory name 1804 p = vim_strnsave(p, pend - p); 1805 1806 if (p != NULL && !mch_isdir(p)) 1807 VIM_CLEAR(p); 1808 else 1809 { 1810 #ifdef USE_EXE_NAME 1811 // may add "/vim54" or "/runtime" if it exists 1812 if (vimruntime && (pend = vim_version_dir(p)) != NULL) 1813 { 1814 vim_free(p); 1815 p = pend; 1816 } 1817 #endif 1818 *mustfree = TRUE; 1819 } 1820 } 1821 } 1822 1823 #ifdef HAVE_PATHDEF 1824 // When there is a pathdef.c file we can use default_vim_dir and 1825 // default_vimruntime_dir 1826 if (p == NULL) 1827 { 1828 // Only use default_vimruntime_dir when it is not empty 1829 if (vimruntime && *default_vimruntime_dir != NUL) 1830 { 1831 p = default_vimruntime_dir; 1832 *mustfree = FALSE; 1833 } 1834 else if (*default_vim_dir != NUL) 1835 { 1836 if (vimruntime && (p = vim_version_dir(default_vim_dir)) != NULL) 1837 *mustfree = TRUE; 1838 else 1839 { 1840 p = default_vim_dir; 1841 *mustfree = FALSE; 1842 } 1843 } 1844 } 1845 #endif 1846 1847 /* 1848 * Set the environment variable, so that the new value can be found fast 1849 * next time, and others can also use it (e.g. Perl). 1850 */ 1851 if (p != NULL) 1852 { 1853 if (vimruntime) 1854 { 1855 vim_setenv((char_u *)"VIMRUNTIME", p); 1856 didset_vimruntime = TRUE; 1857 } 1858 else 1859 { 1860 vim_setenv((char_u *)"VIM", p); 1861 didset_vim = TRUE; 1862 } 1863 } 1864 return p; 1865 } 1866 1867 #if defined(FEAT_EVAL) || defined(PROTO) 1868 void 1869 vim_unsetenv(char_u *var) 1870 { 1871 #ifdef HAVE_UNSETENV 1872 unsetenv((char *)var); 1873 #else 1874 vim_setenv(var, (char_u *)""); 1875 #endif 1876 } 1877 #endif 1878 1879 1880 /* 1881 * Set environment variable "name" and take care of side effects. 1882 */ 1883 void 1884 vim_setenv_ext(char_u *name, char_u *val) 1885 { 1886 vim_setenv(name, val); 1887 if (STRICMP(name, "HOME") == 0) 1888 init_homedir(); 1889 else if (didset_vim && STRICMP(name, "VIM") == 0) 1890 didset_vim = FALSE; 1891 else if (didset_vimruntime 1892 && STRICMP(name, "VIMRUNTIME") == 0) 1893 didset_vimruntime = FALSE; 1894 } 1895 1896 /* 1897 * Our portable version of setenv. 1898 */ 1899 void 1900 vim_setenv(char_u *name, char_u *val) 1901 { 1902 #ifdef HAVE_SETENV 1903 mch_setenv((char *)name, (char *)val, 1); 1904 #else 1905 char_u *envbuf; 1906 1907 /* 1908 * Putenv does not copy the string, it has to remain 1909 * valid. The allocated memory will never be freed. 1910 */ 1911 envbuf = alloc(STRLEN(name) + STRLEN(val) + 2); 1912 if (envbuf != NULL) 1913 { 1914 sprintf((char *)envbuf, "%s=%s", name, val); 1915 putenv((char *)envbuf); 1916 } 1917 #endif 1918 #ifdef FEAT_GETTEXT 1919 /* 1920 * When setting $VIMRUNTIME adjust the directory to find message 1921 * translations to $VIMRUNTIME/lang. 1922 */ 1923 if (*val != NUL && STRICMP(name, "VIMRUNTIME") == 0) 1924 { 1925 char_u *buf = concat_str(val, (char_u *)"/lang"); 1926 1927 if (buf != NULL) 1928 { 1929 bindtextdomain(VIMPACKAGE, (char *)buf); 1930 vim_free(buf); 1931 } 1932 } 1933 #endif 1934 } 1935 1936 /* 1937 * Function given to ExpandGeneric() to obtain an environment variable name. 1938 */ 1939 char_u * 1940 get_env_name( 1941 expand_T *xp UNUSED, 1942 int idx) 1943 { 1944 # if defined(AMIGA) 1945 /* 1946 * No environ[] on the Amiga. 1947 */ 1948 return NULL; 1949 # else 1950 # ifndef __WIN32__ 1951 // Borland C++ 5.2 has this in a header file. 1952 extern char **environ; 1953 # endif 1954 # define ENVNAMELEN 100 1955 static char_u name[ENVNAMELEN]; 1956 char_u *str; 1957 int n; 1958 1959 str = (char_u *)environ[idx]; 1960 if (str == NULL) 1961 return NULL; 1962 1963 for (n = 0; n < ENVNAMELEN - 1; ++n) 1964 { 1965 if (str[n] == '=' || str[n] == NUL) 1966 break; 1967 name[n] = str[n]; 1968 } 1969 name[n] = NUL; 1970 return name; 1971 # endif 1972 } 1973 1974 /* 1975 * Add a user name to the list of users in ga_users. 1976 * Do nothing if user name is NULL or empty. 1977 */ 1978 static void 1979 add_user(char_u *user, int need_copy) 1980 { 1981 char_u *user_copy = (user != NULL && need_copy) 1982 ? vim_strsave(user) : user; 1983 1984 if (user_copy == NULL || *user_copy == NUL || ga_grow(&ga_users, 1) == FAIL) 1985 { 1986 if (need_copy) 1987 vim_free(user); 1988 return; 1989 } 1990 ((char_u **)(ga_users.ga_data))[ga_users.ga_len++] = user_copy; 1991 } 1992 1993 /* 1994 * Find all user names for user completion. 1995 * Done only once and then cached. 1996 */ 1997 static void 1998 init_users(void) 1999 { 2000 static int lazy_init_done = FALSE; 2001 2002 if (lazy_init_done) 2003 return; 2004 2005 lazy_init_done = TRUE; 2006 ga_init2(&ga_users, sizeof(char_u *), 20); 2007 2008 # if defined(HAVE_GETPWENT) && defined(HAVE_PWD_H) 2009 { 2010 struct passwd* pw; 2011 2012 setpwent(); 2013 while ((pw = getpwent()) != NULL) 2014 add_user((char_u *)pw->pw_name, TRUE); 2015 endpwent(); 2016 } 2017 # elif defined(MSWIN) 2018 { 2019 DWORD nusers = 0, ntotal = 0, i; 2020 PUSER_INFO_0 uinfo; 2021 2022 if (NetUserEnum(NULL, 0, 0, (LPBYTE *) &uinfo, MAX_PREFERRED_LENGTH, 2023 &nusers, &ntotal, NULL) == NERR_Success) 2024 { 2025 for (i = 0; i < nusers; i++) 2026 add_user(utf16_to_enc(uinfo[i].usri0_name, NULL), FALSE); 2027 2028 NetApiBufferFree(uinfo); 2029 } 2030 } 2031 # endif 2032 # if defined(HAVE_GETPWNAM) 2033 { 2034 char_u *user_env = mch_getenv((char_u *)"USER"); 2035 2036 // The $USER environment variable may be a valid remote user name (NIS, 2037 // LDAP) not already listed by getpwent(), as getpwent() only lists 2038 // local user names. If $USER is not already listed, check whether it 2039 // is a valid remote user name using getpwnam() and if it is, add it to 2040 // the list of user names. 2041 2042 if (user_env != NULL && *user_env != NUL) 2043 { 2044 int i; 2045 2046 for (i = 0; i < ga_users.ga_len; i++) 2047 { 2048 char_u *local_user = ((char_u **)ga_users.ga_data)[i]; 2049 2050 if (STRCMP(local_user, user_env) == 0) 2051 break; 2052 } 2053 2054 if (i == ga_users.ga_len) 2055 { 2056 struct passwd *pw = getpwnam((char *)user_env); 2057 2058 if (pw != NULL) 2059 add_user((char_u *)pw->pw_name, TRUE); 2060 } 2061 } 2062 } 2063 # endif 2064 } 2065 2066 /* 2067 * Function given to ExpandGeneric() to obtain an user names. 2068 */ 2069 char_u* 2070 get_users(expand_T *xp UNUSED, int idx) 2071 { 2072 init_users(); 2073 if (idx < ga_users.ga_len) 2074 return ((char_u **)ga_users.ga_data)[idx]; 2075 return NULL; 2076 } 2077 2078 /* 2079 * Check whether name matches a user name. Return: 2080 * 0 if name does not match any user name. 2081 * 1 if name partially matches the beginning of a user name. 2082 * 2 is name fully matches a user name. 2083 */ 2084 int 2085 match_user(char_u *name) 2086 { 2087 int i; 2088 int n = (int)STRLEN(name); 2089 int result = 0; 2090 2091 init_users(); 2092 for (i = 0; i < ga_users.ga_len; i++) 2093 { 2094 if (STRCMP(((char_u **)ga_users.ga_data)[i], name) == 0) 2095 return 2; // full match 2096 if (STRNCMP(((char_u **)ga_users.ga_data)[i], name, n) == 0) 2097 result = 1; // partial match 2098 } 2099 return result; 2100 } 2101 2102 /* 2103 * Concatenate two strings and return the result in allocated memory. 2104 * Returns NULL when out of memory. 2105 */ 2106 char_u * 2107 concat_str(char_u *str1, char_u *str2) 2108 { 2109 char_u *dest; 2110 size_t l = str1 == NULL ? 0 : STRLEN(str1); 2111 2112 dest = alloc(l + (str2 == NULL ? 0 : STRLEN(str2)) + 1L); 2113 if (dest != NULL) 2114 { 2115 if (str1 == NULL) 2116 *dest = NUL; 2117 else 2118 STRCPY(dest, str1); 2119 if (str2 != NULL) 2120 STRCPY(dest + l, str2); 2121 } 2122 return dest; 2123 } 2124 2125 static void 2126 prepare_to_exit(void) 2127 { 2128 #if defined(SIGHUP) && defined(SIG_IGN) 2129 // Ignore SIGHUP, because a dropped connection causes a read error, which 2130 // makes Vim exit and then handling SIGHUP causes various reentrance 2131 // problems. 2132 signal(SIGHUP, SIG_IGN); 2133 #endif 2134 2135 #ifdef FEAT_GUI 2136 if (gui.in_use) 2137 { 2138 gui.dying = TRUE; 2139 out_trash(); // trash any pending output 2140 } 2141 else 2142 #endif 2143 { 2144 windgoto((int)Rows - 1, 0); 2145 2146 /* 2147 * Switch terminal mode back now, so messages end up on the "normal" 2148 * screen (if there are two screens). 2149 */ 2150 settmode(TMODE_COOK); 2151 stoptermcap(); 2152 out_flush(); 2153 } 2154 } 2155 2156 /* 2157 * Preserve files and exit. 2158 * When called IObuff must contain a message. 2159 * NOTE: This may be called from deathtrap() in a signal handler, avoid unsafe 2160 * functions, such as allocating memory. 2161 */ 2162 void 2163 preserve_exit(void) 2164 { 2165 buf_T *buf; 2166 2167 prepare_to_exit(); 2168 2169 // Setting this will prevent free() calls. That avoids calling free() 2170 // recursively when free() was invoked with a bad pointer. 2171 really_exiting = TRUE; 2172 2173 out_str(IObuff); 2174 screen_start(); // don't know where cursor is now 2175 out_flush(); 2176 2177 ml_close_notmod(); // close all not-modified buffers 2178 2179 FOR_ALL_BUFFERS(buf) 2180 { 2181 if (buf->b_ml.ml_mfp != NULL && buf->b_ml.ml_mfp->mf_fname != NULL) 2182 { 2183 OUT_STR("Vim: preserving files...\r\n"); 2184 screen_start(); // don't know where cursor is now 2185 out_flush(); 2186 ml_sync_all(FALSE, FALSE); // preserve all swap files 2187 break; 2188 } 2189 } 2190 2191 ml_close_all(FALSE); // close all memfiles, without deleting 2192 2193 OUT_STR("Vim: Finished.\r\n"); 2194 2195 getout(1); 2196 } 2197 2198 /* 2199 * Check for CTRL-C pressed, but only once in a while. 2200 * Should be used instead of ui_breakcheck() for functions that check for 2201 * each line in the file. Calling ui_breakcheck() each time takes too much 2202 * time, because it can be a system call. 2203 */ 2204 2205 #ifndef BREAKCHECK_SKIP 2206 # define BREAKCHECK_SKIP 1000 2207 #endif 2208 2209 static int breakcheck_count = 0; 2210 2211 void 2212 line_breakcheck(void) 2213 { 2214 if (++breakcheck_count >= BREAKCHECK_SKIP) 2215 { 2216 breakcheck_count = 0; 2217 ui_breakcheck(); 2218 } 2219 } 2220 2221 /* 2222 * Like line_breakcheck() but check 10 times less often. 2223 */ 2224 void 2225 fast_breakcheck(void) 2226 { 2227 if (++breakcheck_count >= BREAKCHECK_SKIP * 10) 2228 { 2229 breakcheck_count = 0; 2230 ui_breakcheck(); 2231 } 2232 } 2233 2234 /* 2235 * Like line_breakcheck() but check 100 times less often. 2236 */ 2237 void 2238 veryfast_breakcheck(void) 2239 { 2240 if (++breakcheck_count >= BREAKCHECK_SKIP * 100) 2241 { 2242 breakcheck_count = 0; 2243 ui_breakcheck(); 2244 } 2245 } 2246 2247 #if defined(VIM_BACKTICK) || defined(FEAT_EVAL) \ 2248 || (defined(HAVE_LOCALE_H) || defined(X_LOCALE)) \ 2249 || defined(PROTO) 2250 2251 #ifndef SEEK_SET 2252 # define SEEK_SET 0 2253 #endif 2254 #ifndef SEEK_END 2255 # define SEEK_END 2 2256 #endif 2257 2258 /* 2259 * Get the stdout of an external command. 2260 * If "ret_len" is NULL replace NUL characters with NL. When "ret_len" is not 2261 * NULL store the length there. 2262 * Returns an allocated string, or NULL for error. 2263 */ 2264 char_u * 2265 get_cmd_output( 2266 char_u *cmd, 2267 char_u *infile, // optional input file name 2268 int flags, // can be SHELL_SILENT 2269 int *ret_len) 2270 { 2271 char_u *tempname; 2272 char_u *command; 2273 char_u *buffer = NULL; 2274 int len; 2275 int i = 0; 2276 FILE *fd; 2277 2278 if (check_restricted() || check_secure()) 2279 return NULL; 2280 2281 // get a name for the temp file 2282 if ((tempname = vim_tempname('o', FALSE)) == NULL) 2283 { 2284 emsg(_(e_notmp)); 2285 return NULL; 2286 } 2287 2288 // Add the redirection stuff 2289 command = make_filter_cmd(cmd, infile, tempname); 2290 if (command == NULL) 2291 goto done; 2292 2293 /* 2294 * Call the shell to execute the command (errors are ignored). 2295 * Don't check timestamps here. 2296 */ 2297 ++no_check_timestamps; 2298 call_shell(command, SHELL_DOOUT | SHELL_EXPAND | flags); 2299 --no_check_timestamps; 2300 2301 vim_free(command); 2302 2303 /* 2304 * read the names from the file into memory 2305 */ 2306 # ifdef VMS 2307 // created temporary file is not always readable as binary 2308 fd = mch_fopen((char *)tempname, "r"); 2309 # else 2310 fd = mch_fopen((char *)tempname, READBIN); 2311 # endif 2312 2313 if (fd == NULL) 2314 { 2315 semsg(_(e_notopen), tempname); 2316 goto done; 2317 } 2318 2319 fseek(fd, 0L, SEEK_END); 2320 len = ftell(fd); // get size of temp file 2321 fseek(fd, 0L, SEEK_SET); 2322 2323 buffer = alloc(len + 1); 2324 if (buffer != NULL) 2325 i = (int)fread((char *)buffer, (size_t)1, (size_t)len, fd); 2326 fclose(fd); 2327 mch_remove(tempname); 2328 if (buffer == NULL) 2329 goto done; 2330 #ifdef VMS 2331 len = i; // VMS doesn't give us what we asked for... 2332 #endif 2333 if (i != len) 2334 { 2335 semsg(_(e_notread), tempname); 2336 VIM_CLEAR(buffer); 2337 } 2338 else if (ret_len == NULL) 2339 { 2340 // Change NUL into SOH, otherwise the string is truncated. 2341 for (i = 0; i < len; ++i) 2342 if (buffer[i] == NUL) 2343 buffer[i] = 1; 2344 2345 buffer[len] = NUL; // make sure the buffer is terminated 2346 } 2347 else 2348 *ret_len = len; 2349 2350 done: 2351 vim_free(tempname); 2352 return buffer; 2353 } 2354 2355 # if defined(FEAT_EVAL) || defined(PROTO) 2356 2357 static void 2358 get_cmd_output_as_rettv( 2359 typval_T *argvars, 2360 typval_T *rettv, 2361 int retlist) 2362 { 2363 char_u *res = NULL; 2364 char_u *p; 2365 char_u *infile = NULL; 2366 int err = FALSE; 2367 FILE *fd; 2368 list_T *list = NULL; 2369 int flags = SHELL_SILENT; 2370 2371 rettv->v_type = VAR_STRING; 2372 rettv->vval.v_string = NULL; 2373 if (check_restricted() || check_secure()) 2374 goto errret; 2375 2376 if (argvars[1].v_type != VAR_UNKNOWN) 2377 { 2378 /* 2379 * Write the text to a temp file, to be used for input of the shell 2380 * command. 2381 */ 2382 if ((infile = vim_tempname('i', TRUE)) == NULL) 2383 { 2384 emsg(_(e_notmp)); 2385 goto errret; 2386 } 2387 2388 fd = mch_fopen((char *)infile, WRITEBIN); 2389 if (fd == NULL) 2390 { 2391 semsg(_(e_notopen), infile); 2392 goto errret; 2393 } 2394 if (argvars[1].v_type == VAR_NUMBER) 2395 { 2396 linenr_T lnum; 2397 buf_T *buf; 2398 2399 buf = buflist_findnr(argvars[1].vval.v_number); 2400 if (buf == NULL) 2401 { 2402 semsg(_(e_nobufnr), argvars[1].vval.v_number); 2403 fclose(fd); 2404 goto errret; 2405 } 2406 2407 for (lnum = 1; lnum <= buf->b_ml.ml_line_count; lnum++) 2408 { 2409 for (p = ml_get_buf(buf, lnum, FALSE); *p != NUL; ++p) 2410 if (putc(*p == '\n' ? NUL : *p, fd) == EOF) 2411 { 2412 err = TRUE; 2413 break; 2414 } 2415 if (putc(NL, fd) == EOF) 2416 { 2417 err = TRUE; 2418 break; 2419 } 2420 } 2421 } 2422 else if (argvars[1].v_type == VAR_LIST) 2423 { 2424 if (write_list(fd, argvars[1].vval.v_list, TRUE) == FAIL) 2425 err = TRUE; 2426 } 2427 else 2428 { 2429 size_t len; 2430 char_u buf[NUMBUFLEN]; 2431 2432 p = tv_get_string_buf_chk(&argvars[1], buf); 2433 if (p == NULL) 2434 { 2435 fclose(fd); 2436 goto errret; // type error; errmsg already given 2437 } 2438 len = STRLEN(p); 2439 if (len > 0 && fwrite(p, len, 1, fd) != 1) 2440 err = TRUE; 2441 } 2442 if (fclose(fd) != 0) 2443 err = TRUE; 2444 if (err) 2445 { 2446 emsg(_("E677: Error writing temp file")); 2447 goto errret; 2448 } 2449 } 2450 2451 // Omit SHELL_COOKED when invoked with ":silent". Avoids that the shell 2452 // echoes typeahead, that messes up the display. 2453 if (!msg_silent) 2454 flags += SHELL_COOKED; 2455 2456 if (retlist) 2457 { 2458 int len; 2459 listitem_T *li; 2460 char_u *s = NULL; 2461 char_u *start; 2462 char_u *end; 2463 int i; 2464 2465 res = get_cmd_output(tv_get_string(&argvars[0]), infile, flags, &len); 2466 if (res == NULL) 2467 goto errret; 2468 2469 list = list_alloc(); 2470 if (list == NULL) 2471 goto errret; 2472 2473 for (i = 0; i < len; ++i) 2474 { 2475 start = res + i; 2476 while (i < len && res[i] != NL) 2477 ++i; 2478 end = res + i; 2479 2480 s = alloc(end - start + 1); 2481 if (s == NULL) 2482 goto errret; 2483 2484 for (p = s; start < end; ++p, ++start) 2485 *p = *start == NUL ? NL : *start; 2486 *p = NUL; 2487 2488 li = listitem_alloc(); 2489 if (li == NULL) 2490 { 2491 vim_free(s); 2492 goto errret; 2493 } 2494 li->li_tv.v_type = VAR_STRING; 2495 li->li_tv.v_lock = 0; 2496 li->li_tv.vval.v_string = s; 2497 list_append(list, li); 2498 } 2499 2500 rettv_list_set(rettv, list); 2501 list = NULL; 2502 } 2503 else 2504 { 2505 res = get_cmd_output(tv_get_string(&argvars[0]), infile, flags, NULL); 2506 #ifdef USE_CRNL 2507 // translate <CR><NL> into <NL> 2508 if (res != NULL) 2509 { 2510 char_u *s, *d; 2511 2512 d = res; 2513 for (s = res; *s; ++s) 2514 { 2515 if (s[0] == CAR && s[1] == NL) 2516 ++s; 2517 *d++ = *s; 2518 } 2519 *d = NUL; 2520 } 2521 #endif 2522 rettv->vval.v_string = res; 2523 res = NULL; 2524 } 2525 2526 errret: 2527 if (infile != NULL) 2528 { 2529 mch_remove(infile); 2530 vim_free(infile); 2531 } 2532 if (res != NULL) 2533 vim_free(res); 2534 if (list != NULL) 2535 list_free(list); 2536 } 2537 2538 /* 2539 * "system()" function 2540 */ 2541 void 2542 f_system(typval_T *argvars, typval_T *rettv) 2543 { 2544 get_cmd_output_as_rettv(argvars, rettv, FALSE); 2545 } 2546 2547 /* 2548 * "systemlist()" function 2549 */ 2550 void 2551 f_systemlist(typval_T *argvars, typval_T *rettv) 2552 { 2553 get_cmd_output_as_rettv(argvars, rettv, TRUE); 2554 } 2555 # endif // FEAT_EVAL 2556 2557 #endif 2558 2559 /* 2560 * Return TRUE when need to go to Insert mode because of 'insertmode'. 2561 * Don't do this when still processing a command or a mapping. 2562 * Don't do this when inside a ":normal" command. 2563 */ 2564 int 2565 goto_im(void) 2566 { 2567 return (p_im && stuff_empty() && typebuf_typed()); 2568 } 2569 2570 /* 2571 * Returns the isolated name of the shell in allocated memory: 2572 * - Skip beyond any path. E.g., "/usr/bin/csh -f" -> "csh -f". 2573 * - Remove any argument. E.g., "csh -f" -> "csh". 2574 * But don't allow a space in the path, so that this works: 2575 * "/usr/bin/csh --rcfile ~/.cshrc" 2576 * But don't do that for Windows, it's common to have a space in the path. 2577 * Returns NULL when out of memory. 2578 */ 2579 char_u * 2580 get_isolated_shell_name(void) 2581 { 2582 char_u *p; 2583 2584 #ifdef MSWIN 2585 p = gettail(p_sh); 2586 p = vim_strnsave(p, skiptowhite(p) - p); 2587 #else 2588 p = skiptowhite(p_sh); 2589 if (*p == NUL) 2590 { 2591 // No white space, use the tail. 2592 p = vim_strsave(gettail(p_sh)); 2593 } 2594 else 2595 { 2596 char_u *p1, *p2; 2597 2598 // Find the last path separator before the space. 2599 p1 = p_sh; 2600 for (p2 = p_sh; p2 < p; MB_PTR_ADV(p2)) 2601 if (vim_ispathsep(*p2)) 2602 p1 = p2 + 1; 2603 p = vim_strnsave(p1, p - p1); 2604 } 2605 #endif 2606 return p; 2607 } 2608 2609 /* 2610 * Check if the "://" of a URL is at the pointer, return URL_SLASH. 2611 * Also check for ":\\", which MS Internet Explorer accepts, return 2612 * URL_BACKSLASH. 2613 */ 2614 int 2615 path_is_url(char_u *p) 2616 { 2617 if (STRNCMP(p, "://", (size_t)3) == 0) 2618 return URL_SLASH; 2619 else if (STRNCMP(p, ":\\\\", (size_t)3) == 0) 2620 return URL_BACKSLASH; 2621 return 0; 2622 } 2623 2624 /* 2625 * Check if "fname" starts with "name://". Return URL_SLASH if it does. 2626 * Return URL_BACKSLASH for "name:\\". 2627 * Return zero otherwise. 2628 */ 2629 int 2630 path_with_url(char_u *fname) 2631 { 2632 char_u *p; 2633 2634 for (p = fname; isalpha(*p); ++p) 2635 ; 2636 return path_is_url(p); 2637 } 2638