1 /* vi:set ts=8 sts=4 sw=4: 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 * message.c: functions for displaying messages on the command line 12 */ 13 14 #define MESSAGE_FILE /* don't include prototype for smsg() */ 15 16 #include "vim.h" 17 18 static int other_sourcing_name(void); 19 static char_u *get_emsg_source(void); 20 static char_u *get_emsg_lnum(void); 21 static void add_msg_hist(char_u *s, int len, int attr); 22 static void hit_return_msg(void); 23 static void msg_home_replace_attr(char_u *fname, int attr); 24 #ifdef FEAT_MBYTE 25 static char_u *screen_puts_mbyte(char_u *s, int l, int attr); 26 #endif 27 static void msg_puts_attr_len(char_u *str, int maxlen, int attr); 28 static void msg_puts_display(char_u *str, int maxlen, int attr, int recurse); 29 static void msg_scroll_up(void); 30 static void inc_msg_scrolled(void); 31 static void store_sb_text(char_u **sb_str, char_u *s, int attr, int *sb_col, int finish); 32 static void t_puts(int *t_col, char_u *t_s, char_u *s, int attr); 33 static void msg_puts_printf(char_u *str, int maxlen); 34 static int do_more_prompt(int typed_char); 35 static void msg_screen_putchar(int c, int attr); 36 static int msg_check_screen(void); 37 static void redir_write(char_u *s, int maxlen); 38 #ifdef FEAT_CON_DIALOG 39 static char_u *msg_show_console_dialog(char_u *message, char_u *buttons, int dfltbutton); 40 static int confirm_msg_used = FALSE; /* displaying confirm_msg */ 41 static char_u *confirm_msg = NULL; /* ":confirm" message */ 42 static char_u *confirm_msg_tail; /* tail of confirm_msg */ 43 #endif 44 45 struct msg_hist 46 { 47 struct msg_hist *next; 48 char_u *msg; 49 int attr; 50 }; 51 52 static struct msg_hist *first_msg_hist = NULL; 53 static struct msg_hist *last_msg_hist = NULL; 54 static int msg_hist_len = 0; 55 56 static FILE *verbose_fd = NULL; 57 static int verbose_did_open = FALSE; 58 59 /* 60 * When writing messages to the screen, there are many different situations. 61 * A number of variables is used to remember the current state: 62 * msg_didany TRUE when messages were written since the last time the 63 * user reacted to a prompt. 64 * Reset: After hitting a key for the hit-return prompt, 65 * hitting <CR> for the command line or input(). 66 * Set: When any message is written to the screen. 67 * msg_didout TRUE when something was written to the current line. 68 * Reset: When advancing to the next line, when the current 69 * text can be overwritten. 70 * Set: When any message is written to the screen. 71 * msg_nowait No extra delay for the last drawn message. 72 * Used in normal_cmd() before the mode message is drawn. 73 * emsg_on_display There was an error message recently. Indicates that there 74 * should be a delay before redrawing. 75 * msg_scroll The next message should not overwrite the current one. 76 * msg_scrolled How many lines the screen has been scrolled (because of 77 * messages). Used in update_screen() to scroll the screen 78 * back. Incremented each time the screen scrolls a line. 79 * msg_scrolled_ign TRUE when msg_scrolled is non-zero and msg_puts_attr() 80 * writes something without scrolling should not make 81 * need_wait_return to be set. This is a hack to make ":ts" 82 * work without an extra prompt. 83 * lines_left Number of lines available for messages before the 84 * more-prompt is to be given. -1 when not set. 85 * need_wait_return TRUE when the hit-return prompt is needed. 86 * Reset: After giving the hit-return prompt, when the user 87 * has answered some other prompt. 88 * Set: When the ruler or typeahead display is overwritten, 89 * scrolling the screen for some message. 90 * keep_msg Message to be displayed after redrawing the screen, in 91 * main_loop(). 92 * This is an allocated string or NULL when not used. 93 */ 94 95 /* 96 * msg(s) - displays the string 's' on the status line 97 * When terminal not initialized (yet) mch_errmsg(..) is used. 98 * return TRUE if wait_return not called 99 */ 100 int 101 msg(char_u *s) 102 { 103 return msg_attr_keep(s, 0, FALSE); 104 } 105 106 #if defined(FEAT_EVAL) || defined(FEAT_X11) || defined(USE_XSMP) \ 107 || defined(FEAT_GUI_GTK) || defined(PROTO) 108 /* 109 * Like msg() but keep it silent when 'verbosefile' is set. 110 */ 111 int 112 verb_msg(char_u *s) 113 { 114 int n; 115 116 verbose_enter(); 117 n = msg_attr_keep(s, 0, FALSE); 118 verbose_leave(); 119 120 return n; 121 } 122 #endif 123 124 int 125 msg_attr(char_u *s, int attr) 126 { 127 return msg_attr_keep(s, attr, FALSE); 128 } 129 130 int 131 msg_attr_keep( 132 char_u *s, 133 int attr, 134 int keep) /* TRUE: set keep_msg if it doesn't scroll */ 135 { 136 static int entered = 0; 137 int retval; 138 char_u *buf = NULL; 139 140 #ifdef FEAT_EVAL 141 if (attr == 0) 142 set_vim_var_string(VV_STATUSMSG, s, -1); 143 #endif 144 145 /* 146 * It is possible that displaying a messages causes a problem (e.g., 147 * when redrawing the window), which causes another message, etc.. To 148 * break this loop, limit the recursiveness to 3 levels. 149 */ 150 if (entered >= 3) 151 return TRUE; 152 ++entered; 153 154 /* Add message to history (unless it's a repeated kept message or a 155 * truncated message) */ 156 if (s != keep_msg 157 || (*s != '<' 158 && last_msg_hist != NULL 159 && last_msg_hist->msg != NULL 160 && STRCMP(s, last_msg_hist->msg))) 161 add_msg_hist(s, -1, attr); 162 163 /* When displaying keep_msg, don't let msg_start() free it, caller must do 164 * that. */ 165 if (s == keep_msg) 166 keep_msg = NULL; 167 168 /* Truncate the message if needed. */ 169 msg_start(); 170 buf = msg_strtrunc(s, FALSE); 171 if (buf != NULL) 172 s = buf; 173 174 msg_outtrans_attr(s, attr); 175 msg_clr_eos(); 176 retval = msg_end(); 177 178 if (keep && retval && vim_strsize(s) < (int)(Rows - cmdline_row - 1) 179 * Columns + sc_col) 180 set_keep_msg(s, 0); 181 182 vim_free(buf); 183 --entered; 184 return retval; 185 } 186 187 /* 188 * Truncate a string such that it can be printed without causing a scroll. 189 * Returns an allocated string or NULL when no truncating is done. 190 */ 191 char_u * 192 msg_strtrunc( 193 char_u *s, 194 int force) /* always truncate */ 195 { 196 char_u *buf = NULL; 197 int len; 198 int room; 199 200 /* May truncate message to avoid a hit-return prompt */ 201 if ((!msg_scroll && !need_wait_return && shortmess(SHM_TRUNCALL) 202 && !exmode_active && msg_silent == 0) || force) 203 { 204 len = vim_strsize(s); 205 if (msg_scrolled != 0) 206 /* Use all the columns. */ 207 room = (int)(Rows - msg_row) * Columns - 1; 208 else 209 /* Use up to 'showcmd' column. */ 210 room = (int)(Rows - msg_row - 1) * Columns + sc_col - 1; 211 if (len > room && room > 0) 212 { 213 #ifdef FEAT_MBYTE 214 if (enc_utf8) 215 /* may have up to 18 bytes per cell (6 per char, up to two 216 * composing chars) */ 217 len = (room + 2) * 18; 218 else if (enc_dbcs == DBCS_JPNU) 219 /* may have up to 2 bytes per cell for euc-jp */ 220 len = (room + 2) * 2; 221 else 222 #endif 223 len = room + 2; 224 buf = alloc(len); 225 if (buf != NULL) 226 trunc_string(s, buf, room, len); 227 } 228 } 229 return buf; 230 } 231 232 /* 233 * Truncate a string "s" to "buf" with cell width "room". 234 * "s" and "buf" may be equal. 235 */ 236 void 237 trunc_string( 238 char_u *s, 239 char_u *buf, 240 int room, 241 int buflen) 242 { 243 int half; 244 int len; 245 int e; 246 int i; 247 int n; 248 249 room -= 3; 250 half = room / 2; 251 len = 0; 252 253 /* First part: Start of the string. */ 254 for (e = 0; len < half && e < buflen; ++e) 255 { 256 if (s[e] == NUL) 257 { 258 /* text fits without truncating! */ 259 buf[e] = NUL; 260 return; 261 } 262 n = ptr2cells(s + e); 263 if (len + n >= half) 264 break; 265 len += n; 266 buf[e] = s[e]; 267 #ifdef FEAT_MBYTE 268 if (has_mbyte) 269 for (n = (*mb_ptr2len)(s + e); --n > 0; ) 270 { 271 if (++e == buflen) 272 break; 273 buf[e] = s[e]; 274 } 275 #endif 276 } 277 278 /* Last part: End of the string. */ 279 i = e; 280 #ifdef FEAT_MBYTE 281 if (enc_dbcs != 0) 282 { 283 /* For DBCS going backwards in a string is slow, but 284 * computing the cell width isn't too slow: go forward 285 * until the rest fits. */ 286 n = vim_strsize(s + i); 287 while (len + n > room) 288 { 289 n -= ptr2cells(s + i); 290 i += (*mb_ptr2len)(s + i); 291 } 292 } 293 else if (enc_utf8) 294 { 295 /* For UTF-8 we can go backwards easily. */ 296 half = i = (int)STRLEN(s); 297 for (;;) 298 { 299 do 300 half = half - (*mb_head_off)(s, s + half - 1) - 1; 301 while (utf_iscomposing(utf_ptr2char(s + half)) && half > 0); 302 n = ptr2cells(s + half); 303 if (len + n > room) 304 break; 305 len += n; 306 i = half; 307 } 308 } 309 else 310 #endif 311 { 312 for (i = (int)STRLEN(s); len + (n = ptr2cells(s + i - 1)) <= room; --i) 313 len += n; 314 } 315 316 /* Set the middle and copy the last part. */ 317 if (e + 3 < buflen) 318 { 319 mch_memmove(buf + e, "...", (size_t)3); 320 len = (int)STRLEN(s + i) + 1; 321 if (len >= buflen - e - 3) 322 len = buflen - e - 3 - 1; 323 mch_memmove(buf + e + 3, s + i, len); 324 buf[e + 3 + len - 1] = NUL; 325 } 326 else 327 { 328 buf[e - 1] = NUL; /* make sure it is truncated */ 329 } 330 } 331 332 /* 333 * Automatic prototype generation does not understand this function. 334 * Note: Caller of smgs() and smsg_attr() must check the resulting string is 335 * shorter than IOSIZE!!! 336 */ 337 #ifndef PROTO 338 339 int vim_snprintf(char *str, size_t str_m, char *fmt, ...); 340 341 int 342 # ifdef __BORLANDC__ 343 _RTLENTRYF 344 # endif 345 smsg(char_u *s, ...) 346 { 347 va_list arglist; 348 349 va_start(arglist, s); 350 vim_vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist, NULL); 351 va_end(arglist); 352 return msg(IObuff); 353 } 354 355 int 356 # ifdef __BORLANDC__ 357 _RTLENTRYF 358 # endif 359 smsg_attr(int attr, char_u *s, ...) 360 { 361 va_list arglist; 362 363 va_start(arglist, s); 364 vim_vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist, NULL); 365 va_end(arglist); 366 return msg_attr(IObuff, attr); 367 } 368 369 #endif 370 371 /* 372 * Remember the last sourcing name/lnum used in an error message, so that it 373 * isn't printed each time when it didn't change. 374 */ 375 static int last_sourcing_lnum = 0; 376 static char_u *last_sourcing_name = NULL; 377 378 /* 379 * Reset the last used sourcing name/lnum. Makes sure it is displayed again 380 * for the next error message; 381 */ 382 void 383 reset_last_sourcing(void) 384 { 385 vim_free(last_sourcing_name); 386 last_sourcing_name = NULL; 387 last_sourcing_lnum = 0; 388 } 389 390 /* 391 * Return TRUE if "sourcing_name" differs from "last_sourcing_name". 392 */ 393 static int 394 other_sourcing_name(void) 395 { 396 if (sourcing_name != NULL) 397 { 398 if (last_sourcing_name != NULL) 399 return STRCMP(sourcing_name, last_sourcing_name) != 0; 400 return TRUE; 401 } 402 return FALSE; 403 } 404 405 /* 406 * Get the message about the source, as used for an error message. 407 * Returns an allocated string with room for one more character. 408 * Returns NULL when no message is to be given. 409 */ 410 static char_u * 411 get_emsg_source(void) 412 { 413 char_u *Buf, *p; 414 415 if (sourcing_name != NULL && other_sourcing_name()) 416 { 417 p = (char_u *)_("Error detected while processing %s:"); 418 Buf = alloc((unsigned)(STRLEN(sourcing_name) + STRLEN(p))); 419 if (Buf != NULL) 420 sprintf((char *)Buf, (char *)p, sourcing_name); 421 return Buf; 422 } 423 return NULL; 424 } 425 426 /* 427 * Get the message about the source lnum, as used for an error message. 428 * Returns an allocated string with room for one more character. 429 * Returns NULL when no message is to be given. 430 */ 431 static char_u * 432 get_emsg_lnum(void) 433 { 434 char_u *Buf, *p; 435 436 /* lnum is 0 when executing a command from the command line 437 * argument, we don't want a line number then */ 438 if (sourcing_name != NULL 439 && (other_sourcing_name() || sourcing_lnum != last_sourcing_lnum) 440 && sourcing_lnum != 0) 441 { 442 p = (char_u *)_("line %4ld:"); 443 Buf = alloc((unsigned)(STRLEN(p) + 20)); 444 if (Buf != NULL) 445 sprintf((char *)Buf, (char *)p, (long)sourcing_lnum); 446 return Buf; 447 } 448 return NULL; 449 } 450 451 /* 452 * Display name and line number for the source of an error. 453 * Remember the file name and line number, so that for the next error the info 454 * is only displayed if it changed. 455 */ 456 void 457 msg_source(int attr) 458 { 459 char_u *p; 460 461 ++no_wait_return; 462 p = get_emsg_source(); 463 if (p != NULL) 464 { 465 msg_attr(p, attr); 466 vim_free(p); 467 } 468 p = get_emsg_lnum(); 469 if (p != NULL) 470 { 471 msg_attr(p, hl_attr(HLF_N)); 472 vim_free(p); 473 last_sourcing_lnum = sourcing_lnum; /* only once for each line */ 474 } 475 476 /* remember the last sourcing name printed, also when it's empty */ 477 if (sourcing_name == NULL || other_sourcing_name()) 478 { 479 vim_free(last_sourcing_name); 480 if (sourcing_name == NULL) 481 last_sourcing_name = NULL; 482 else 483 last_sourcing_name = vim_strsave(sourcing_name); 484 } 485 --no_wait_return; 486 } 487 488 /* 489 * Return TRUE if not giving error messages right now: 490 * If "emsg_off" is set: no error messages at the moment. 491 * If "msg" is in 'debug': do error message but without side effects. 492 * If "emsg_skip" is set: never do error messages. 493 */ 494 int 495 emsg_not_now(void) 496 { 497 if ((emsg_off > 0 && vim_strchr(p_debug, 'm') == NULL 498 && vim_strchr(p_debug, 't') == NULL) 499 #ifdef FEAT_EVAL 500 || emsg_skip > 0 501 #endif 502 ) 503 return TRUE; 504 return FALSE; 505 } 506 507 /* 508 * emsg() - display an error message 509 * 510 * Rings the bell, if appropriate, and calls message() to do the real work 511 * When terminal not initialized (yet) mch_errmsg(..) is used. 512 * 513 * return TRUE if wait_return not called 514 */ 515 int 516 emsg(char_u *s) 517 { 518 int attr; 519 char_u *p; 520 #ifdef FEAT_EVAL 521 int ignore = FALSE; 522 int severe; 523 #endif 524 525 /* Skip this if not giving error messages at the moment. */ 526 if (emsg_not_now()) 527 return TRUE; 528 529 called_emsg = TRUE; 530 if (emsg_silent == 0) 531 ex_exitval = 1; 532 533 /* 534 * If "emsg_severe" is TRUE: When an error exception is to be thrown, 535 * prefer this message over previous messages for the same command. 536 */ 537 #ifdef FEAT_EVAL 538 severe = emsg_severe; 539 emsg_severe = FALSE; 540 #endif 541 542 if (!emsg_off || vim_strchr(p_debug, 't') != NULL) 543 { 544 #ifdef FEAT_EVAL 545 /* 546 * Cause a throw of an error exception if appropriate. Don't display 547 * the error message in this case. (If no matching catch clause will 548 * be found, the message will be displayed later on.) "ignore" is set 549 * when the message should be ignored completely (used for the 550 * interrupt message). 551 */ 552 if (cause_errthrow(s, severe, &ignore) == TRUE) 553 { 554 if (!ignore) 555 did_emsg = TRUE; 556 return TRUE; 557 } 558 559 /* set "v:errmsg", also when using ":silent! cmd" */ 560 set_vim_var_string(VV_ERRMSG, s, -1); 561 #endif 562 563 /* 564 * When using ":silent! cmd" ignore error messages. 565 * But do write it to the redirection file. 566 */ 567 if (emsg_silent != 0) 568 { 569 msg_start(); 570 p = get_emsg_source(); 571 if (p != NULL) 572 { 573 STRCAT(p, "\n"); 574 redir_write(p, -1); 575 vim_free(p); 576 } 577 p = get_emsg_lnum(); 578 if (p != NULL) 579 { 580 STRCAT(p, "\n"); 581 redir_write(p, -1); 582 vim_free(p); 583 } 584 redir_write(s, -1); 585 return TRUE; 586 } 587 588 /* Reset msg_silent, an error causes messages to be switched back on. */ 589 msg_silent = 0; 590 cmd_silent = FALSE; 591 592 if (global_busy) /* break :global command */ 593 ++global_busy; 594 595 if (p_eb) 596 beep_flush(); /* also includes flush_buffers() */ 597 else 598 flush_buffers(FALSE); /* flush internal buffers */ 599 did_emsg = TRUE; /* flag for DoOneCmd() */ 600 } 601 602 emsg_on_display = TRUE; /* remember there is an error message */ 603 ++msg_scroll; /* don't overwrite a previous message */ 604 attr = hl_attr(HLF_E); /* set highlight mode for error messages */ 605 if (msg_scrolled != 0) 606 need_wait_return = TRUE; /* needed in case emsg() is called after 607 * wait_return has reset need_wait_return 608 * and a redraw is expected because 609 * msg_scrolled is non-zero */ 610 611 /* 612 * Display name and line number for the source of the error. 613 */ 614 msg_source(attr); 615 616 /* 617 * Display the error message itself. 618 */ 619 msg_nowait = FALSE; /* wait for this msg */ 620 return msg_attr(s, attr); 621 } 622 623 /* 624 * Print an error message with one "%s" and one string argument. 625 */ 626 int 627 emsg2(char_u *s, char_u *a1) 628 { 629 return emsg3(s, a1, NULL); 630 } 631 632 /* emsg3() and emsgn() are in misc2.c to avoid warnings for the prototypes. */ 633 634 void 635 emsg_invreg(int name) 636 { 637 EMSG2(_("E354: Invalid register name: '%s'"), transchar(name)); 638 } 639 640 /* 641 * Like msg(), but truncate to a single line if p_shm contains 't', or when 642 * "force" is TRUE. This truncates in another way as for normal messages. 643 * Careful: The string may be changed by msg_may_trunc()! 644 * Returns a pointer to the printed message, if wait_return() not called. 645 */ 646 char_u * 647 msg_trunc_attr(char_u *s, int force, int attr) 648 { 649 int n; 650 651 /* Add message to history before truncating */ 652 add_msg_hist(s, -1, attr); 653 654 s = msg_may_trunc(force, s); 655 656 msg_hist_off = TRUE; 657 n = msg_attr(s, attr); 658 msg_hist_off = FALSE; 659 660 if (n) 661 return s; 662 return NULL; 663 } 664 665 /* 666 * Check if message "s" should be truncated at the start (for filenames). 667 * Return a pointer to where the truncated message starts. 668 * Note: May change the message by replacing a character with '<'. 669 */ 670 char_u * 671 msg_may_trunc(int force, char_u *s) 672 { 673 int n; 674 int room; 675 676 room = (int)(Rows - cmdline_row - 1) * Columns + sc_col - 1; 677 if ((force || (shortmess(SHM_TRUNC) && !exmode_active)) 678 && (n = (int)STRLEN(s) - room) > 0) 679 { 680 #ifdef FEAT_MBYTE 681 if (has_mbyte) 682 { 683 int size = vim_strsize(s); 684 685 /* There may be room anyway when there are multibyte chars. */ 686 if (size <= room) 687 return s; 688 689 for (n = 0; size >= room; ) 690 { 691 size -= (*mb_ptr2cells)(s + n); 692 n += (*mb_ptr2len)(s + n); 693 } 694 --n; 695 } 696 #endif 697 s += n; 698 *s = '<'; 699 } 700 return s; 701 } 702 703 static void 704 add_msg_hist( 705 char_u *s, 706 int len, /* -1 for undetermined length */ 707 int attr) 708 { 709 struct msg_hist *p; 710 711 if (msg_hist_off || msg_silent != 0) 712 return; 713 714 /* Don't let the message history get too big */ 715 while (msg_hist_len > MAX_MSG_HIST_LEN) 716 (void)delete_first_msg(); 717 718 /* allocate an entry and add the message at the end of the history */ 719 p = (struct msg_hist *)alloc((int)sizeof(struct msg_hist)); 720 if (p != NULL) 721 { 722 if (len < 0) 723 len = (int)STRLEN(s); 724 /* remove leading and trailing newlines */ 725 while (len > 0 && *s == '\n') 726 { 727 ++s; 728 --len; 729 } 730 while (len > 0 && s[len - 1] == '\n') 731 --len; 732 p->msg = vim_strnsave(s, len); 733 p->next = NULL; 734 p->attr = attr; 735 if (last_msg_hist != NULL) 736 last_msg_hist->next = p; 737 last_msg_hist = p; 738 if (first_msg_hist == NULL) 739 first_msg_hist = last_msg_hist; 740 ++msg_hist_len; 741 } 742 } 743 744 /* 745 * Delete the first (oldest) message from the history. 746 * Returns FAIL if there are no messages. 747 */ 748 int 749 delete_first_msg(void) 750 { 751 struct msg_hist *p; 752 753 if (msg_hist_len <= 0) 754 return FAIL; 755 p = first_msg_hist; 756 first_msg_hist = p->next; 757 if (first_msg_hist == NULL) 758 last_msg_hist = NULL; /* history is empty */ 759 vim_free(p->msg); 760 vim_free(p); 761 --msg_hist_len; 762 return OK; 763 } 764 765 /* 766 * ":messages" command. 767 */ 768 void 769 ex_messages(exarg_T *eap UNUSED) 770 { 771 struct msg_hist *p; 772 char_u *s; 773 774 msg_hist_off = TRUE; 775 776 s = mch_getenv((char_u *)"LANG"); 777 if (s != NULL && *s != NUL) 778 msg_attr((char_u *) 779 _("Messages maintainer: Bram Moolenaar <[email protected]>"), 780 hl_attr(HLF_T)); 781 782 for (p = first_msg_hist; p != NULL && !got_int; p = p->next) 783 if (p->msg != NULL) 784 msg_attr(p->msg, p->attr); 785 786 msg_hist_off = FALSE; 787 } 788 789 #if defined(FEAT_CON_DIALOG) || defined(FIND_REPLACE_DIALOG) || defined(PROTO) 790 /* 791 * Call this after prompting the user. This will avoid a hit-return message 792 * and a delay. 793 */ 794 void 795 msg_end_prompt(void) 796 { 797 need_wait_return = FALSE; 798 emsg_on_display = FALSE; 799 cmdline_row = msg_row; 800 msg_col = 0; 801 msg_clr_eos(); 802 lines_left = -1; 803 } 804 #endif 805 806 /* 807 * wait for the user to hit a key (normally a return) 808 * if 'redraw' is TRUE, clear and redraw the screen 809 * if 'redraw' is FALSE, just redraw the screen 810 * if 'redraw' is -1, don't redraw at all 811 */ 812 void 813 wait_return(int redraw) 814 { 815 int c; 816 int oldState; 817 int tmpState; 818 int had_got_int; 819 int save_Recording; 820 FILE *save_scriptout; 821 822 if (redraw == TRUE) 823 must_redraw = CLEAR; 824 825 /* If using ":silent cmd", don't wait for a return. Also don't set 826 * need_wait_return to do it later. */ 827 if (msg_silent != 0) 828 return; 829 830 /* 831 * When inside vgetc(), we can't wait for a typed character at all. 832 * With the global command (and some others) we only need one return at 833 * the end. Adjust cmdline_row to avoid the next message overwriting the 834 * last one. 835 */ 836 if (vgetc_busy > 0) 837 return; 838 need_wait_return = TRUE; 839 if (no_wait_return) 840 { 841 if (!exmode_active) 842 cmdline_row = msg_row; 843 return; 844 } 845 846 redir_off = TRUE; /* don't redirect this message */ 847 oldState = State; 848 if (quit_more) 849 { 850 c = CAR; /* just pretend CR was hit */ 851 quit_more = FALSE; 852 got_int = FALSE; 853 } 854 else if (exmode_active) 855 { 856 MSG_PUTS(" "); /* make sure the cursor is on the right line */ 857 c = CAR; /* no need for a return in ex mode */ 858 got_int = FALSE; 859 } 860 else 861 { 862 /* Make sure the hit-return prompt is on screen when 'guioptions' was 863 * just changed. */ 864 screenalloc(FALSE); 865 866 State = HITRETURN; 867 #ifdef FEAT_MOUSE 868 setmouse(); 869 #endif 870 #ifdef USE_ON_FLY_SCROLL 871 dont_scroll = TRUE; /* disallow scrolling here */ 872 #endif 873 /* Avoid the sequence that the user types ":" at the hit-return prompt 874 * to start an Ex command, but the file-changed dialog gets in the 875 * way. */ 876 if (need_check_timestamps) 877 check_timestamps(FALSE); 878 879 hit_return_msg(); 880 881 do 882 { 883 /* Remember "got_int", if it is set vgetc() probably returns a 884 * CTRL-C, but we need to loop then. */ 885 had_got_int = got_int; 886 887 /* Don't do mappings here, we put the character back in the 888 * typeahead buffer. */ 889 ++no_mapping; 890 ++allow_keys; 891 892 /* Temporarily disable Recording. If Recording is active, the 893 * character will be recorded later, since it will be added to the 894 * typebuf after the loop */ 895 save_Recording = Recording; 896 save_scriptout = scriptout; 897 Recording = FALSE; 898 scriptout = NULL; 899 c = safe_vgetc(); 900 if (had_got_int && !global_busy) 901 got_int = FALSE; 902 --no_mapping; 903 --allow_keys; 904 Recording = save_Recording; 905 scriptout = save_scriptout; 906 907 #ifdef FEAT_CLIPBOARD 908 /* Strange way to allow copying (yanking) a modeless selection at 909 * the hit-enter prompt. Use CTRL-Y, because the same is used in 910 * Cmdline-mode and it's harmless when there is no selection. */ 911 if (c == Ctrl_Y && clip_star.state == SELECT_DONE) 912 { 913 clip_copy_modeless_selection(TRUE); 914 c = K_IGNORE; 915 } 916 #endif 917 918 /* 919 * Allow scrolling back in the messages. 920 * Also accept scroll-down commands when messages fill the screen, 921 * to avoid that typing one 'j' too many makes the messages 922 * disappear. 923 */ 924 if (p_more && !p_cp) 925 { 926 if (c == 'b' || c == 'k' || c == 'u' || c == 'g' 927 || c == K_UP || c == K_PAGEUP) 928 { 929 if (msg_scrolled > Rows) 930 /* scroll back to show older messages */ 931 do_more_prompt(c); 932 else 933 { 934 msg_didout = FALSE; 935 c = K_IGNORE; 936 msg_col = 937 #ifdef FEAT_RIGHTLEFT 938 cmdmsg_rl ? Columns - 1 : 939 #endif 940 0; 941 } 942 if (quit_more) 943 { 944 c = CAR; /* just pretend CR was hit */ 945 quit_more = FALSE; 946 got_int = FALSE; 947 } 948 else if (c != K_IGNORE) 949 { 950 c = K_IGNORE; 951 hit_return_msg(); 952 } 953 } 954 else if (msg_scrolled > Rows - 2 955 && (c == 'j' || c == 'd' || c == 'f' 956 || c == K_DOWN || c == K_PAGEDOWN)) 957 c = K_IGNORE; 958 } 959 } while ((had_got_int && c == Ctrl_C) 960 || c == K_IGNORE 961 #ifdef FEAT_GUI 962 || c == K_VER_SCROLLBAR || c == K_HOR_SCROLLBAR 963 #endif 964 #ifdef FEAT_MOUSE 965 || c == K_LEFTDRAG || c == K_LEFTRELEASE 966 || c == K_MIDDLEDRAG || c == K_MIDDLERELEASE 967 || c == K_RIGHTDRAG || c == K_RIGHTRELEASE 968 || c == K_MOUSELEFT || c == K_MOUSERIGHT 969 || c == K_MOUSEDOWN || c == K_MOUSEUP 970 || (!mouse_has(MOUSE_RETURN) 971 && mouse_row < msg_row 972 && (c == K_LEFTMOUSE 973 || c == K_MIDDLEMOUSE 974 || c == K_RIGHTMOUSE 975 || c == K_X1MOUSE 976 || c == K_X2MOUSE)) 977 #endif 978 ); 979 ui_breakcheck(); 980 #ifdef FEAT_MOUSE 981 /* 982 * Avoid that the mouse-up event causes visual mode to start. 983 */ 984 if (c == K_LEFTMOUSE || c == K_MIDDLEMOUSE || c == K_RIGHTMOUSE 985 || c == K_X1MOUSE || c == K_X2MOUSE) 986 (void)jump_to_mouse(MOUSE_SETPOS, NULL, 0); 987 else 988 #endif 989 if (vim_strchr((char_u *)"\r\n ", c) == NULL && c != Ctrl_C) 990 { 991 /* Put the character back in the typeahead buffer. Don't use the 992 * stuff buffer, because lmaps wouldn't work. */ 993 ins_char_typebuf(c); 994 do_redraw = TRUE; /* need a redraw even though there is 995 typeahead */ 996 } 997 } 998 redir_off = FALSE; 999 1000 /* 1001 * If the user hits ':', '?' or '/' we get a command line from the next 1002 * line. 1003 */ 1004 if (c == ':' || c == '?' || c == '/') 1005 { 1006 if (!exmode_active) 1007 cmdline_row = msg_row; 1008 skip_redraw = TRUE; /* skip redraw once */ 1009 do_redraw = FALSE; 1010 } 1011 1012 /* 1013 * If the window size changed set_shellsize() will redraw the screen. 1014 * Otherwise the screen is only redrawn if 'redraw' is set and no ':' 1015 * typed. 1016 */ 1017 tmpState = State; 1018 State = oldState; /* restore State before set_shellsize */ 1019 #ifdef FEAT_MOUSE 1020 setmouse(); 1021 #endif 1022 msg_check(); 1023 1024 #if defined(UNIX) || defined(VMS) 1025 /* 1026 * When switching screens, we need to output an extra newline on exit. 1027 */ 1028 if (swapping_screen() && !termcap_active) 1029 newline_on_exit = TRUE; 1030 #endif 1031 1032 need_wait_return = FALSE; 1033 did_wait_return = TRUE; 1034 emsg_on_display = FALSE; /* can delete error message now */ 1035 lines_left = -1; /* reset lines_left at next msg_start() */ 1036 reset_last_sourcing(); 1037 if (keep_msg != NULL && vim_strsize(keep_msg) >= 1038 (Rows - cmdline_row - 1) * Columns + sc_col) 1039 { 1040 vim_free(keep_msg); 1041 keep_msg = NULL; /* don't redisplay message, it's too long */ 1042 } 1043 1044 if (tmpState == SETWSIZE) /* got resize event while in vgetc() */ 1045 { 1046 starttermcap(); /* start termcap before redrawing */ 1047 shell_resized(); 1048 } 1049 else if (!skip_redraw 1050 && (redraw == TRUE || (msg_scrolled != 0 && redraw != -1))) 1051 { 1052 starttermcap(); /* start termcap before redrawing */ 1053 redraw_later(VALID); 1054 } 1055 } 1056 1057 /* 1058 * Write the hit-return prompt. 1059 */ 1060 static void 1061 hit_return_msg(void) 1062 { 1063 int save_p_more = p_more; 1064 1065 p_more = FALSE; /* don't want see this message when scrolling back */ 1066 if (msg_didout) /* start on a new line */ 1067 msg_putchar('\n'); 1068 if (got_int) 1069 MSG_PUTS(_("Interrupt: ")); 1070 1071 MSG_PUTS_ATTR(_("Press ENTER or type command to continue"), hl_attr(HLF_R)); 1072 if (!msg_use_printf()) 1073 msg_clr_eos(); 1074 p_more = save_p_more; 1075 } 1076 1077 /* 1078 * Set "keep_msg" to "s". Free the old value and check for NULL pointer. 1079 */ 1080 void 1081 set_keep_msg(char_u *s, int attr) 1082 { 1083 vim_free(keep_msg); 1084 if (s != NULL && msg_silent == 0) 1085 keep_msg = vim_strsave(s); 1086 else 1087 keep_msg = NULL; 1088 keep_msg_more = FALSE; 1089 keep_msg_attr = attr; 1090 } 1091 1092 #if defined(FEAT_TERMRESPONSE) || defined(PROTO) 1093 /* 1094 * If there currently is a message being displayed, set "keep_msg" to it, so 1095 * that it will be displayed again after redraw. 1096 */ 1097 void 1098 set_keep_msg_from_hist(void) 1099 { 1100 if (keep_msg == NULL && last_msg_hist != NULL && msg_scrolled == 0 1101 && (State & NORMAL)) 1102 set_keep_msg(last_msg_hist->msg, last_msg_hist->attr); 1103 } 1104 #endif 1105 1106 /* 1107 * Prepare for outputting characters in the command line. 1108 */ 1109 void 1110 msg_start(void) 1111 { 1112 int did_return = FALSE; 1113 1114 if (!msg_silent) 1115 { 1116 vim_free(keep_msg); 1117 keep_msg = NULL; /* don't display old message now */ 1118 } 1119 1120 #ifdef FEAT_EVAL 1121 if (need_clr_eos) 1122 { 1123 /* Halfway an ":echo" command and getting an (error) message: clear 1124 * any text from the command. */ 1125 need_clr_eos = FALSE; 1126 msg_clr_eos(); 1127 } 1128 #endif 1129 1130 if (!msg_scroll && full_screen) /* overwrite last message */ 1131 { 1132 msg_row = cmdline_row; 1133 msg_col = 1134 #ifdef FEAT_RIGHTLEFT 1135 cmdmsg_rl ? Columns - 1 : 1136 #endif 1137 0; 1138 } 1139 else if (msg_didout) /* start message on next line */ 1140 { 1141 msg_putchar('\n'); 1142 did_return = TRUE; 1143 if (exmode_active != EXMODE_NORMAL) 1144 cmdline_row = msg_row; 1145 } 1146 if (!msg_didany || lines_left < 0) 1147 msg_starthere(); 1148 if (msg_silent == 0) 1149 { 1150 msg_didout = FALSE; /* no output on current line yet */ 1151 cursor_off(); 1152 } 1153 1154 /* when redirecting, may need to start a new line. */ 1155 if (!did_return) 1156 redir_write((char_u *)"\n", -1); 1157 } 1158 1159 /* 1160 * Note that the current msg position is where messages start. 1161 */ 1162 void 1163 msg_starthere(void) 1164 { 1165 lines_left = cmdline_row; 1166 msg_didany = FALSE; 1167 } 1168 1169 void 1170 msg_putchar(int c) 1171 { 1172 msg_putchar_attr(c, 0); 1173 } 1174 1175 void 1176 msg_putchar_attr(int c, int attr) 1177 { 1178 #ifdef FEAT_MBYTE 1179 char_u buf[MB_MAXBYTES + 1]; 1180 #else 1181 char_u buf[4]; 1182 #endif 1183 1184 if (IS_SPECIAL(c)) 1185 { 1186 buf[0] = K_SPECIAL; 1187 buf[1] = K_SECOND(c); 1188 buf[2] = K_THIRD(c); 1189 buf[3] = NUL; 1190 } 1191 else 1192 { 1193 #ifdef FEAT_MBYTE 1194 buf[(*mb_char2bytes)(c, buf)] = NUL; 1195 #else 1196 buf[0] = c; 1197 buf[1] = NUL; 1198 #endif 1199 } 1200 msg_puts_attr(buf, attr); 1201 } 1202 1203 void 1204 msg_outnum(long n) 1205 { 1206 char_u buf[20]; 1207 1208 sprintf((char *)buf, "%ld", n); 1209 msg_puts(buf); 1210 } 1211 1212 void 1213 msg_home_replace(char_u *fname) 1214 { 1215 msg_home_replace_attr(fname, 0); 1216 } 1217 1218 #if defined(FEAT_FIND_ID) || defined(PROTO) 1219 void 1220 msg_home_replace_hl(char_u *fname) 1221 { 1222 msg_home_replace_attr(fname, hl_attr(HLF_D)); 1223 } 1224 #endif 1225 1226 static void 1227 msg_home_replace_attr(char_u *fname, int attr) 1228 { 1229 char_u *name; 1230 1231 name = home_replace_save(NULL, fname); 1232 if (name != NULL) 1233 msg_outtrans_attr(name, attr); 1234 vim_free(name); 1235 } 1236 1237 /* 1238 * Output 'len' characters in 'str' (including NULs) with translation 1239 * if 'len' is -1, output upto a NUL character. 1240 * Use attributes 'attr'. 1241 * Return the number of characters it takes on the screen. 1242 */ 1243 int 1244 msg_outtrans(char_u *str) 1245 { 1246 return msg_outtrans_attr(str, 0); 1247 } 1248 1249 int 1250 msg_outtrans_attr(char_u *str, int attr) 1251 { 1252 return msg_outtrans_len_attr(str, (int)STRLEN(str), attr); 1253 } 1254 1255 int 1256 msg_outtrans_len(char_u *str, int len) 1257 { 1258 return msg_outtrans_len_attr(str, len, 0); 1259 } 1260 1261 /* 1262 * Output one character at "p". Return pointer to the next character. 1263 * Handles multi-byte characters. 1264 */ 1265 char_u * 1266 msg_outtrans_one(char_u *p, int attr) 1267 { 1268 #ifdef FEAT_MBYTE 1269 int l; 1270 1271 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) 1272 { 1273 msg_outtrans_len_attr(p, l, attr); 1274 return p + l; 1275 } 1276 #endif 1277 msg_puts_attr(transchar_byte(*p), attr); 1278 return p + 1; 1279 } 1280 1281 int 1282 msg_outtrans_len_attr(char_u *msgstr, int len, int attr) 1283 { 1284 int retval = 0; 1285 char_u *str = msgstr; 1286 char_u *plain_start = msgstr; 1287 char_u *s; 1288 #ifdef FEAT_MBYTE 1289 int mb_l; 1290 int c; 1291 #endif 1292 1293 /* if MSG_HIST flag set, add message to history */ 1294 if (attr & MSG_HIST) 1295 { 1296 add_msg_hist(str, len, attr); 1297 attr &= ~MSG_HIST; 1298 } 1299 1300 #ifdef FEAT_MBYTE 1301 /* If the string starts with a composing character first draw a space on 1302 * which the composing char can be drawn. */ 1303 if (enc_utf8 && utf_iscomposing(utf_ptr2char(msgstr))) 1304 msg_puts_attr((char_u *)" ", attr); 1305 #endif 1306 1307 /* 1308 * Go over the string. Special characters are translated and printed. 1309 * Normal characters are printed several at a time. 1310 */ 1311 while (--len >= 0) 1312 { 1313 #ifdef FEAT_MBYTE 1314 if (enc_utf8) 1315 /* Don't include composing chars after the end. */ 1316 mb_l = utfc_ptr2len_len(str, len + 1); 1317 else if (has_mbyte) 1318 mb_l = (*mb_ptr2len)(str); 1319 else 1320 mb_l = 1; 1321 if (has_mbyte && mb_l > 1) 1322 { 1323 c = (*mb_ptr2char)(str); 1324 if (vim_isprintc(c)) 1325 /* printable multi-byte char: count the cells. */ 1326 retval += (*mb_ptr2cells)(str); 1327 else 1328 { 1329 /* unprintable multi-byte char: print the printable chars so 1330 * far and the translation of the unprintable char. */ 1331 if (str > plain_start) 1332 msg_puts_attr_len(plain_start, (int)(str - plain_start), 1333 attr); 1334 plain_start = str + mb_l; 1335 msg_puts_attr(transchar(c), attr == 0 ? hl_attr(HLF_8) : attr); 1336 retval += char2cells(c); 1337 } 1338 len -= mb_l - 1; 1339 str += mb_l; 1340 } 1341 else 1342 #endif 1343 { 1344 s = transchar_byte(*str); 1345 if (s[1] != NUL) 1346 { 1347 /* unprintable char: print the printable chars so far and the 1348 * translation of the unprintable char. */ 1349 if (str > plain_start) 1350 msg_puts_attr_len(plain_start, (int)(str - plain_start), 1351 attr); 1352 plain_start = str + 1; 1353 msg_puts_attr(s, attr == 0 ? hl_attr(HLF_8) : attr); 1354 retval += (int)STRLEN(s); 1355 } 1356 else 1357 ++retval; 1358 ++str; 1359 } 1360 } 1361 1362 if (str > plain_start) 1363 /* print the printable chars at the end */ 1364 msg_puts_attr_len(plain_start, (int)(str - plain_start), attr); 1365 1366 return retval; 1367 } 1368 1369 #if defined(FEAT_QUICKFIX) || defined(PROTO) 1370 void 1371 msg_make(char_u *arg) 1372 { 1373 int i; 1374 static char_u *str = (char_u *)"eeffoc", *rs = (char_u *)"Plon#dqg#vxjduB"; 1375 1376 arg = skipwhite(arg); 1377 for (i = 5; *arg && i >= 0; --i) 1378 if (*arg++ != str[i]) 1379 break; 1380 if (i < 0) 1381 { 1382 msg_putchar('\n'); 1383 for (i = 0; rs[i]; ++i) 1384 msg_putchar(rs[i] - 3); 1385 } 1386 } 1387 #endif 1388 1389 /* 1390 * Output the string 'str' upto a NUL character. 1391 * Return the number of characters it takes on the screen. 1392 * 1393 * If K_SPECIAL is encountered, then it is taken in conjunction with the 1394 * following character and shown as <F1>, <S-Up> etc. Any other character 1395 * which is not printable shown in <> form. 1396 * If 'from' is TRUE (lhs of a mapping), a space is shown as <Space>. 1397 * If a character is displayed in one of these special ways, is also 1398 * highlighted (its highlight name is '8' in the p_hl variable). 1399 * Otherwise characters are not highlighted. 1400 * This function is used to show mappings, where we want to see how to type 1401 * the character/string -- webb 1402 */ 1403 int 1404 msg_outtrans_special( 1405 char_u *strstart, 1406 int from) /* TRUE for lhs of a mapping */ 1407 { 1408 char_u *str = strstart; 1409 int retval = 0; 1410 char_u *string; 1411 int attr; 1412 int len; 1413 1414 attr = hl_attr(HLF_8); 1415 while (*str != NUL) 1416 { 1417 /* Leading and trailing spaces need to be displayed in <> form. */ 1418 if ((str == strstart || str[1] == NUL) && *str == ' ') 1419 { 1420 string = (char_u *)"<Space>"; 1421 ++str; 1422 } 1423 else 1424 string = str2special(&str, from); 1425 len = vim_strsize(string); 1426 /* Highlight special keys */ 1427 msg_puts_attr(string, len > 1 1428 #ifdef FEAT_MBYTE 1429 && (*mb_ptr2len)(string) <= 1 1430 #endif 1431 ? attr : 0); 1432 retval += len; 1433 } 1434 return retval; 1435 } 1436 1437 #if defined(FEAT_EVAL) || defined(PROTO) 1438 /* 1439 * Return the lhs or rhs of a mapping, with the key codes turned into printable 1440 * strings, in an allocated string. 1441 */ 1442 char_u * 1443 str2special_save( 1444 char_u *str, 1445 int is_lhs) /* TRUE for lhs, FALSE for rhs */ 1446 { 1447 garray_T ga; 1448 char_u *p = str; 1449 1450 ga_init2(&ga, 1, 40); 1451 while (*p != NUL) 1452 ga_concat(&ga, str2special(&p, is_lhs)); 1453 ga_append(&ga, NUL); 1454 return (char_u *)ga.ga_data; 1455 } 1456 #endif 1457 1458 /* 1459 * Return the printable string for the key codes at "*sp". 1460 * Used for translating the lhs or rhs of a mapping to printable chars. 1461 * Advances "sp" to the next code. 1462 */ 1463 char_u * 1464 str2special( 1465 char_u **sp, 1466 int from) /* TRUE for lhs of mapping */ 1467 { 1468 int c; 1469 static char_u buf[7]; 1470 char_u *str = *sp; 1471 int modifiers = 0; 1472 int special = FALSE; 1473 1474 #ifdef FEAT_MBYTE 1475 if (has_mbyte) 1476 { 1477 char_u *p; 1478 1479 /* Try to un-escape a multi-byte character. Return the un-escaped 1480 * string if it is a multi-byte character. */ 1481 p = mb_unescape(sp); 1482 if (p != NULL) 1483 return p; 1484 } 1485 #endif 1486 1487 c = *str; 1488 if (c == K_SPECIAL && str[1] != NUL && str[2] != NUL) 1489 { 1490 if (str[1] == KS_MODIFIER) 1491 { 1492 modifiers = str[2]; 1493 str += 3; 1494 c = *str; 1495 } 1496 if (c == K_SPECIAL && str[1] != NUL && str[2] != NUL) 1497 { 1498 c = TO_SPECIAL(str[1], str[2]); 1499 str += 2; 1500 if (c == KS_ZERO) /* display <Nul> as ^@ or <Nul> */ 1501 c = NUL; 1502 } 1503 if (IS_SPECIAL(c) || modifiers) /* special key */ 1504 special = TRUE; 1505 } 1506 1507 #ifdef FEAT_MBYTE 1508 if (has_mbyte && !IS_SPECIAL(c)) 1509 { 1510 int len = (*mb_ptr2len)(str); 1511 1512 /* For multi-byte characters check for an illegal byte. */ 1513 if (has_mbyte && MB_BYTE2LEN(*str) > len) 1514 { 1515 transchar_nonprint(buf, c); 1516 *sp = str + 1; 1517 return buf; 1518 } 1519 /* Since 'special' is TRUE the multi-byte character 'c' will be 1520 * processed by get_special_key_name() */ 1521 c = (*mb_ptr2char)(str); 1522 *sp = str + len; 1523 } 1524 else 1525 #endif 1526 *sp = str + 1; 1527 1528 /* Make unprintable characters in <> form, also <M-Space> and <Tab>. 1529 * Use <Space> only for lhs of a mapping. */ 1530 if (special || char2cells(c) > 1 || (from && c == ' ')) 1531 return get_special_key_name(c, modifiers); 1532 buf[0] = c; 1533 buf[1] = NUL; 1534 return buf; 1535 } 1536 1537 /* 1538 * Translate a key sequence into special key names. 1539 */ 1540 void 1541 str2specialbuf(char_u *sp, char_u *buf, int len) 1542 { 1543 char_u *s; 1544 1545 *buf = NUL; 1546 while (*sp) 1547 { 1548 s = str2special(&sp, FALSE); 1549 if ((int)(STRLEN(s) + STRLEN(buf)) < len) 1550 STRCAT(buf, s); 1551 } 1552 } 1553 1554 /* 1555 * print line for :print or :list command 1556 */ 1557 void 1558 msg_prt_line(char_u *s, int list) 1559 { 1560 int c; 1561 int col = 0; 1562 int n_extra = 0; 1563 int c_extra = 0; 1564 char_u *p_extra = NULL; /* init to make SASC shut up */ 1565 int n; 1566 int attr = 0; 1567 char_u *trail = NULL; 1568 #ifdef FEAT_MBYTE 1569 int l; 1570 char_u buf[MB_MAXBYTES + 1]; 1571 #endif 1572 1573 if (curwin->w_p_list) 1574 list = TRUE; 1575 1576 /* find start of trailing whitespace */ 1577 if (list && lcs_trail) 1578 { 1579 trail = s + STRLEN(s); 1580 while (trail > s && vim_iswhite(trail[-1])) 1581 --trail; 1582 } 1583 1584 /* output a space for an empty line, otherwise the line will be 1585 * overwritten */ 1586 if (*s == NUL && !(list && lcs_eol != NUL)) 1587 msg_putchar(' '); 1588 1589 while (!got_int) 1590 { 1591 if (n_extra > 0) 1592 { 1593 --n_extra; 1594 if (c_extra) 1595 c = c_extra; 1596 else 1597 c = *p_extra++; 1598 } 1599 #ifdef FEAT_MBYTE 1600 else if (has_mbyte && (l = (*mb_ptr2len)(s)) > 1) 1601 { 1602 col += (*mb_ptr2cells)(s); 1603 if (lcs_nbsp != NUL && list 1604 && (mb_ptr2char(s) == 160 1605 || mb_ptr2char(s) == 0x202f)) 1606 { 1607 mb_char2bytes(lcs_nbsp, buf); 1608 buf[(*mb_ptr2len)(buf)] = NUL; 1609 } 1610 else 1611 { 1612 mch_memmove(buf, s, (size_t)l); 1613 buf[l] = NUL; 1614 } 1615 msg_puts(buf); 1616 s += l; 1617 continue; 1618 } 1619 #endif 1620 else 1621 { 1622 attr = 0; 1623 c = *s++; 1624 if (c == TAB && (!list || lcs_tab1)) 1625 { 1626 /* tab amount depends on current column */ 1627 n_extra = curbuf->b_p_ts - col % curbuf->b_p_ts - 1; 1628 if (!list) 1629 { 1630 c = ' '; 1631 c_extra = ' '; 1632 } 1633 else 1634 { 1635 c = lcs_tab1; 1636 c_extra = lcs_tab2; 1637 attr = hl_attr(HLF_8); 1638 } 1639 } 1640 else if (c == 160 && list && lcs_nbsp != NUL) 1641 { 1642 c = lcs_nbsp; 1643 attr = hl_attr(HLF_8); 1644 } 1645 else if (c == NUL && list && lcs_eol != NUL) 1646 { 1647 p_extra = (char_u *)""; 1648 c_extra = NUL; 1649 n_extra = 1; 1650 c = lcs_eol; 1651 attr = hl_attr(HLF_AT); 1652 --s; 1653 } 1654 else if (c != NUL && (n = byte2cells(c)) > 1) 1655 { 1656 n_extra = n - 1; 1657 p_extra = transchar_byte(c); 1658 c_extra = NUL; 1659 c = *p_extra++; 1660 /* Use special coloring to be able to distinguish <hex> from 1661 * the same in plain text. */ 1662 attr = hl_attr(HLF_8); 1663 } 1664 else if (c == ' ' && trail != NULL && s > trail) 1665 { 1666 c = lcs_trail; 1667 attr = hl_attr(HLF_8); 1668 } 1669 else if (c == ' ' && list && lcs_space != NUL) 1670 { 1671 c = lcs_space; 1672 attr = hl_attr(HLF_8); 1673 } 1674 } 1675 1676 if (c == NUL) 1677 break; 1678 1679 msg_putchar_attr(c, attr); 1680 col++; 1681 } 1682 msg_clr_eos(); 1683 } 1684 1685 #ifdef FEAT_MBYTE 1686 /* 1687 * Use screen_puts() to output one multi-byte character. 1688 * Return the pointer "s" advanced to the next character. 1689 */ 1690 static char_u * 1691 screen_puts_mbyte(char_u *s, int l, int attr) 1692 { 1693 int cw; 1694 1695 msg_didout = TRUE; /* remember that line is not empty */ 1696 cw = (*mb_ptr2cells)(s); 1697 if (cw > 1 && ( 1698 #ifdef FEAT_RIGHTLEFT 1699 cmdmsg_rl ? msg_col <= 1 : 1700 #endif 1701 msg_col == Columns - 1)) 1702 { 1703 /* Doesn't fit, print a highlighted '>' to fill it up. */ 1704 msg_screen_putchar('>', hl_attr(HLF_AT)); 1705 return s; 1706 } 1707 1708 screen_puts_len(s, l, msg_row, msg_col, attr); 1709 #ifdef FEAT_RIGHTLEFT 1710 if (cmdmsg_rl) 1711 { 1712 msg_col -= cw; 1713 if (msg_col == 0) 1714 { 1715 msg_col = Columns; 1716 ++msg_row; 1717 } 1718 } 1719 else 1720 #endif 1721 { 1722 msg_col += cw; 1723 if (msg_col >= Columns) 1724 { 1725 msg_col = 0; 1726 ++msg_row; 1727 } 1728 } 1729 return s + l; 1730 } 1731 #endif 1732 1733 /* 1734 * Output a string to the screen at position msg_row, msg_col. 1735 * Update msg_row and msg_col for the next message. 1736 */ 1737 void 1738 msg_puts(char_u *s) 1739 { 1740 msg_puts_attr(s, 0); 1741 } 1742 1743 void 1744 msg_puts_title( 1745 char_u *s) 1746 { 1747 msg_puts_attr(s, hl_attr(HLF_T)); 1748 } 1749 1750 /* 1751 * Show a message in such a way that it always fits in the line. Cut out a 1752 * part in the middle and replace it with "..." when necessary. 1753 * Does not handle multi-byte characters! 1754 */ 1755 void 1756 msg_puts_long_attr(char_u *longstr, int attr) 1757 { 1758 msg_puts_long_len_attr(longstr, (int)STRLEN(longstr), attr); 1759 } 1760 1761 void 1762 msg_puts_long_len_attr(char_u *longstr, int len, int attr) 1763 { 1764 int slen = len; 1765 int room; 1766 1767 room = Columns - msg_col; 1768 if (len > room && room >= 20) 1769 { 1770 slen = (room - 3) / 2; 1771 msg_outtrans_len_attr(longstr, slen, attr); 1772 msg_puts_attr((char_u *)"...", hl_attr(HLF_8)); 1773 } 1774 msg_outtrans_len_attr(longstr + len - slen, slen, attr); 1775 } 1776 1777 /* 1778 * Basic function for writing a message with highlight attributes. 1779 */ 1780 void 1781 msg_puts_attr(char_u *s, int attr) 1782 { 1783 msg_puts_attr_len(s, -1, attr); 1784 } 1785 1786 /* 1787 * Like msg_puts_attr(), but with a maximum length "maxlen" (in bytes). 1788 * When "maxlen" is -1 there is no maximum length. 1789 * When "maxlen" is >= 0 the message is not put in the history. 1790 */ 1791 static void 1792 msg_puts_attr_len(char_u *str, int maxlen, int attr) 1793 { 1794 /* 1795 * If redirection is on, also write to the redirection file. 1796 */ 1797 redir_write(str, maxlen); 1798 1799 /* 1800 * Don't print anything when using ":silent cmd". 1801 */ 1802 if (msg_silent != 0) 1803 return; 1804 1805 /* if MSG_HIST flag set, add message to history */ 1806 if ((attr & MSG_HIST) && maxlen < 0) 1807 { 1808 add_msg_hist(str, -1, attr); 1809 attr &= ~MSG_HIST; 1810 } 1811 1812 /* 1813 * When writing something to the screen after it has scrolled, requires a 1814 * wait-return prompt later. Needed when scrolling, resetting 1815 * need_wait_return after some prompt, and then outputting something 1816 * without scrolling 1817 */ 1818 if (msg_scrolled != 0 && !msg_scrolled_ign) 1819 need_wait_return = TRUE; 1820 msg_didany = TRUE; /* remember that something was outputted */ 1821 1822 /* 1823 * If there is no valid screen, use fprintf so we can see error messages. 1824 * If termcap is not active, we may be writing in an alternate console 1825 * window, cursor positioning may not work correctly (window size may be 1826 * different, e.g. for Win32 console) or we just don't know where the 1827 * cursor is. 1828 */ 1829 if (msg_use_printf()) 1830 msg_puts_printf(str, maxlen); 1831 else 1832 msg_puts_display(str, maxlen, attr, FALSE); 1833 } 1834 1835 /* 1836 * The display part of msg_puts_attr_len(). 1837 * May be called recursively to display scroll-back text. 1838 */ 1839 static void 1840 msg_puts_display( 1841 char_u *str, 1842 int maxlen, 1843 int attr, 1844 int recurse) 1845 { 1846 char_u *s = str; 1847 char_u *t_s = str; /* string from "t_s" to "s" is still todo */ 1848 int t_col = 0; /* screen cells todo, 0 when "t_s" not used */ 1849 #ifdef FEAT_MBYTE 1850 int l; 1851 int cw; 1852 #endif 1853 char_u *sb_str = str; 1854 int sb_col = msg_col; 1855 int wrap; 1856 int did_last_char; 1857 1858 did_wait_return = FALSE; 1859 while ((maxlen < 0 || (int)(s - str) < maxlen) && *s != NUL) 1860 { 1861 /* 1862 * We are at the end of the screen line when: 1863 * - When outputting a newline. 1864 * - When outputting a character in the last column. 1865 */ 1866 if (!recurse && msg_row >= Rows - 1 && (*s == '\n' || ( 1867 #ifdef FEAT_RIGHTLEFT 1868 cmdmsg_rl 1869 ? ( 1870 msg_col <= 1 1871 || (*s == TAB && msg_col <= 7) 1872 # ifdef FEAT_MBYTE 1873 || (has_mbyte && (*mb_ptr2cells)(s) > 1 && msg_col <= 2) 1874 # endif 1875 ) 1876 : 1877 #endif 1878 (msg_col + t_col >= Columns - 1 1879 || (*s == TAB && msg_col + t_col >= ((Columns - 1) & ~7)) 1880 # ifdef FEAT_MBYTE 1881 || (has_mbyte && (*mb_ptr2cells)(s) > 1 1882 && msg_col + t_col >= Columns - 2) 1883 # endif 1884 )))) 1885 { 1886 /* 1887 * The screen is scrolled up when at the last row (some terminals 1888 * scroll automatically, some don't. To avoid problems we scroll 1889 * ourselves). 1890 */ 1891 if (t_col > 0) 1892 /* output postponed text */ 1893 t_puts(&t_col, t_s, s, attr); 1894 1895 /* When no more prompt and no more room, truncate here */ 1896 if (msg_no_more && lines_left == 0) 1897 break; 1898 1899 /* Scroll the screen up one line. */ 1900 msg_scroll_up(); 1901 1902 msg_row = Rows - 2; 1903 if (msg_col >= Columns) /* can happen after screen resize */ 1904 msg_col = Columns - 1; 1905 1906 /* Display char in last column before showing more-prompt. */ 1907 if (*s >= ' ' 1908 #ifdef FEAT_RIGHTLEFT 1909 && !cmdmsg_rl 1910 #endif 1911 ) 1912 { 1913 #ifdef FEAT_MBYTE 1914 if (has_mbyte) 1915 { 1916 if (enc_utf8 && maxlen >= 0) 1917 /* avoid including composing chars after the end */ 1918 l = utfc_ptr2len_len(s, (int)((str + maxlen) - s)); 1919 else 1920 l = (*mb_ptr2len)(s); 1921 s = screen_puts_mbyte(s, l, attr); 1922 } 1923 else 1924 #endif 1925 msg_screen_putchar(*s++, attr); 1926 did_last_char = TRUE; 1927 } 1928 else 1929 did_last_char = FALSE; 1930 1931 if (p_more) 1932 /* store text for scrolling back */ 1933 store_sb_text(&sb_str, s, attr, &sb_col, TRUE); 1934 1935 inc_msg_scrolled(); 1936 need_wait_return = TRUE; /* may need wait_return in main() */ 1937 if (must_redraw < VALID) 1938 must_redraw = VALID; 1939 redraw_cmdline = TRUE; 1940 if (cmdline_row > 0 && !exmode_active) 1941 --cmdline_row; 1942 1943 /* 1944 * If screen is completely filled and 'more' is set then wait 1945 * for a character. 1946 */ 1947 if (lines_left > 0) 1948 --lines_left; 1949 if (p_more && lines_left == 0 && State != HITRETURN 1950 && !msg_no_more && !exmode_active) 1951 { 1952 #ifdef FEAT_CON_DIALOG 1953 if (do_more_prompt(NUL)) 1954 s = confirm_msg_tail; 1955 #else 1956 (void)do_more_prompt(NUL); 1957 #endif 1958 if (quit_more) 1959 return; 1960 } 1961 1962 /* When we displayed a char in last column need to check if there 1963 * is still more. */ 1964 if (did_last_char) 1965 continue; 1966 } 1967 1968 wrap = *s == '\n' 1969 || msg_col + t_col >= Columns 1970 #ifdef FEAT_MBYTE 1971 || (has_mbyte && (*mb_ptr2cells)(s) > 1 1972 && msg_col + t_col >= Columns - 1) 1973 #endif 1974 ; 1975 if (t_col > 0 && (wrap || *s == '\r' || *s == '\b' 1976 || *s == '\t' || *s == BELL)) 1977 /* output any postponed text */ 1978 t_puts(&t_col, t_s, s, attr); 1979 1980 if (wrap && p_more && !recurse) 1981 /* store text for scrolling back */ 1982 store_sb_text(&sb_str, s, attr, &sb_col, TRUE); 1983 1984 if (*s == '\n') /* go to next line */ 1985 { 1986 msg_didout = FALSE; /* remember that line is empty */ 1987 #ifdef FEAT_RIGHTLEFT 1988 if (cmdmsg_rl) 1989 msg_col = Columns - 1; 1990 else 1991 #endif 1992 msg_col = 0; 1993 if (++msg_row >= Rows) /* safety check */ 1994 msg_row = Rows - 1; 1995 } 1996 else if (*s == '\r') /* go to column 0 */ 1997 { 1998 msg_col = 0; 1999 } 2000 else if (*s == '\b') /* go to previous char */ 2001 { 2002 if (msg_col) 2003 --msg_col; 2004 } 2005 else if (*s == TAB) /* translate Tab into spaces */ 2006 { 2007 do 2008 msg_screen_putchar(' ', attr); 2009 while (msg_col & 7); 2010 } 2011 else if (*s == BELL) /* beep (from ":sh") */ 2012 vim_beep(BO_SH); 2013 else 2014 { 2015 #ifdef FEAT_MBYTE 2016 if (has_mbyte) 2017 { 2018 cw = (*mb_ptr2cells)(s); 2019 if (enc_utf8 && maxlen >= 0) 2020 /* avoid including composing chars after the end */ 2021 l = utfc_ptr2len_len(s, (int)((str + maxlen) - s)); 2022 else 2023 l = (*mb_ptr2len)(s); 2024 } 2025 else 2026 { 2027 cw = 1; 2028 l = 1; 2029 } 2030 #endif 2031 /* When drawing from right to left or when a double-wide character 2032 * doesn't fit, draw a single character here. Otherwise collect 2033 * characters and draw them all at once later. */ 2034 #if defined(FEAT_RIGHTLEFT) || defined(FEAT_MBYTE) 2035 if ( 2036 # ifdef FEAT_RIGHTLEFT 2037 cmdmsg_rl 2038 # ifdef FEAT_MBYTE 2039 || 2040 # endif 2041 # endif 2042 # ifdef FEAT_MBYTE 2043 (cw > 1 && msg_col + t_col >= Columns - 1) 2044 # endif 2045 ) 2046 { 2047 # ifdef FEAT_MBYTE 2048 if (l > 1) 2049 s = screen_puts_mbyte(s, l, attr) - 1; 2050 else 2051 # endif 2052 msg_screen_putchar(*s, attr); 2053 } 2054 else 2055 #endif 2056 { 2057 /* postpone this character until later */ 2058 if (t_col == 0) 2059 t_s = s; 2060 #ifdef FEAT_MBYTE 2061 t_col += cw; 2062 s += l - 1; 2063 #else 2064 ++t_col; 2065 #endif 2066 } 2067 } 2068 ++s; 2069 } 2070 2071 /* output any postponed text */ 2072 if (t_col > 0) 2073 t_puts(&t_col, t_s, s, attr); 2074 if (p_more && !recurse) 2075 store_sb_text(&sb_str, s, attr, &sb_col, FALSE); 2076 2077 msg_check(); 2078 } 2079 2080 /* 2081 * Scroll the screen up one line for displaying the next message line. 2082 */ 2083 static void 2084 msg_scroll_up(void) 2085 { 2086 #ifdef FEAT_GUI 2087 /* Remove the cursor before scrolling, ScreenLines[] is going 2088 * to become invalid. */ 2089 if (gui.in_use) 2090 gui_undraw_cursor(); 2091 #endif 2092 /* scrolling up always works */ 2093 screen_del_lines(0, 0, 1, (int)Rows, TRUE, NULL); 2094 2095 if (!can_clear((char_u *)" ")) 2096 { 2097 /* Scrolling up doesn't result in the right background. Set the 2098 * background here. It's not efficient, but avoids that we have to do 2099 * it all over the code. */ 2100 screen_fill((int)Rows - 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2101 2102 /* Also clear the last char of the last but one line if it was not 2103 * cleared before to avoid a scroll-up. */ 2104 if (ScreenAttrs[LineOffset[Rows - 2] + Columns - 1] == (sattr_T)-1) 2105 screen_fill((int)Rows - 2, (int)Rows - 1, 2106 (int)Columns - 1, (int)Columns, ' ', ' ', 0); 2107 } 2108 } 2109 2110 /* 2111 * Increment "msg_scrolled". 2112 */ 2113 static void 2114 inc_msg_scrolled(void) 2115 { 2116 #ifdef FEAT_EVAL 2117 if (*get_vim_var_str(VV_SCROLLSTART) == NUL) 2118 { 2119 char_u *p = sourcing_name; 2120 char_u *tofree = NULL; 2121 int len; 2122 2123 /* v:scrollstart is empty, set it to the script/function name and line 2124 * number */ 2125 if (p == NULL) 2126 p = (char_u *)_("Unknown"); 2127 else 2128 { 2129 len = (int)STRLEN(p) + 40; 2130 tofree = alloc(len); 2131 if (tofree != NULL) 2132 { 2133 vim_snprintf((char *)tofree, len, _("%s line %ld"), 2134 p, (long)sourcing_lnum); 2135 p = tofree; 2136 } 2137 } 2138 set_vim_var_string(VV_SCROLLSTART, p, -1); 2139 vim_free(tofree); 2140 } 2141 #endif 2142 ++msg_scrolled; 2143 } 2144 2145 /* 2146 * To be able to scroll back at the "more" and "hit-enter" prompts we need to 2147 * store the displayed text and remember where screen lines start. 2148 */ 2149 typedef struct msgchunk_S msgchunk_T; 2150 struct msgchunk_S 2151 { 2152 msgchunk_T *sb_next; 2153 msgchunk_T *sb_prev; 2154 char sb_eol; /* TRUE when line ends after this text */ 2155 int sb_msg_col; /* column in which text starts */ 2156 int sb_attr; /* text attributes */ 2157 char_u sb_text[1]; /* text to be displayed, actually longer */ 2158 }; 2159 2160 static msgchunk_T *last_msgchunk = NULL; /* last displayed text */ 2161 2162 static msgchunk_T *msg_sb_start(msgchunk_T *mps); 2163 static msgchunk_T *disp_sb_line(int row, msgchunk_T *smp); 2164 2165 static int do_clear_sb_text = FALSE; /* clear text on next msg */ 2166 2167 /* 2168 * Store part of a printed message for displaying when scrolling back. 2169 */ 2170 static void 2171 store_sb_text( 2172 char_u **sb_str, /* start of string */ 2173 char_u *s, /* just after string */ 2174 int attr, 2175 int *sb_col, 2176 int finish) /* line ends */ 2177 { 2178 msgchunk_T *mp; 2179 2180 if (do_clear_sb_text) 2181 { 2182 clear_sb_text(); 2183 do_clear_sb_text = FALSE; 2184 } 2185 2186 if (s > *sb_str) 2187 { 2188 mp = (msgchunk_T *)alloc((int)(sizeof(msgchunk_T) + (s - *sb_str))); 2189 if (mp != NULL) 2190 { 2191 mp->sb_eol = finish; 2192 mp->sb_msg_col = *sb_col; 2193 mp->sb_attr = attr; 2194 vim_strncpy(mp->sb_text, *sb_str, s - *sb_str); 2195 2196 if (last_msgchunk == NULL) 2197 { 2198 last_msgchunk = mp; 2199 mp->sb_prev = NULL; 2200 } 2201 else 2202 { 2203 mp->sb_prev = last_msgchunk; 2204 last_msgchunk->sb_next = mp; 2205 last_msgchunk = mp; 2206 } 2207 mp->sb_next = NULL; 2208 } 2209 } 2210 else if (finish && last_msgchunk != NULL) 2211 last_msgchunk->sb_eol = TRUE; 2212 2213 *sb_str = s; 2214 *sb_col = 0; 2215 } 2216 2217 /* 2218 * Finished showing messages, clear the scroll-back text on the next message. 2219 */ 2220 void 2221 may_clear_sb_text(void) 2222 { 2223 do_clear_sb_text = TRUE; 2224 } 2225 2226 /* 2227 * Clear any text remembered for scrolling back. 2228 * Called when redrawing the screen. 2229 */ 2230 void 2231 clear_sb_text(void) 2232 { 2233 msgchunk_T *mp; 2234 2235 while (last_msgchunk != NULL) 2236 { 2237 mp = last_msgchunk->sb_prev; 2238 vim_free(last_msgchunk); 2239 last_msgchunk = mp; 2240 } 2241 } 2242 2243 /* 2244 * "g<" command. 2245 */ 2246 void 2247 show_sb_text(void) 2248 { 2249 msgchunk_T *mp; 2250 2251 /* Only show something if there is more than one line, otherwise it looks 2252 * weird, typing a command without output results in one line. */ 2253 mp = msg_sb_start(last_msgchunk); 2254 if (mp == NULL || mp->sb_prev == NULL) 2255 vim_beep(BO_MESS); 2256 else 2257 { 2258 do_more_prompt('G'); 2259 wait_return(FALSE); 2260 } 2261 } 2262 2263 /* 2264 * Move to the start of screen line in already displayed text. 2265 */ 2266 static msgchunk_T * 2267 msg_sb_start(msgchunk_T *mps) 2268 { 2269 msgchunk_T *mp = mps; 2270 2271 while (mp != NULL && mp->sb_prev != NULL && !mp->sb_prev->sb_eol) 2272 mp = mp->sb_prev; 2273 return mp; 2274 } 2275 2276 /* 2277 * Mark the last message chunk as finishing the line. 2278 */ 2279 void 2280 msg_sb_eol(void) 2281 { 2282 if (last_msgchunk != NULL) 2283 last_msgchunk->sb_eol = TRUE; 2284 } 2285 2286 /* 2287 * Display a screen line from previously displayed text at row "row". 2288 * Returns a pointer to the text for the next line (can be NULL). 2289 */ 2290 static msgchunk_T * 2291 disp_sb_line(int row, msgchunk_T *smp) 2292 { 2293 msgchunk_T *mp = smp; 2294 char_u *p; 2295 2296 for (;;) 2297 { 2298 msg_row = row; 2299 msg_col = mp->sb_msg_col; 2300 p = mp->sb_text; 2301 if (*p == '\n') /* don't display the line break */ 2302 ++p; 2303 msg_puts_display(p, -1, mp->sb_attr, TRUE); 2304 if (mp->sb_eol || mp->sb_next == NULL) 2305 break; 2306 mp = mp->sb_next; 2307 } 2308 return mp->sb_next; 2309 } 2310 2311 /* 2312 * Output any postponed text for msg_puts_attr_len(). 2313 */ 2314 static void 2315 t_puts( 2316 int *t_col, 2317 char_u *t_s, 2318 char_u *s, 2319 int attr) 2320 { 2321 /* output postponed text */ 2322 msg_didout = TRUE; /* remember that line is not empty */ 2323 screen_puts_len(t_s, (int)(s - t_s), msg_row, msg_col, attr); 2324 msg_col += *t_col; 2325 *t_col = 0; 2326 #ifdef FEAT_MBYTE 2327 /* If the string starts with a composing character don't increment the 2328 * column position for it. */ 2329 if (enc_utf8 && utf_iscomposing(utf_ptr2char(t_s))) 2330 --msg_col; 2331 #endif 2332 if (msg_col >= Columns) 2333 { 2334 msg_col = 0; 2335 ++msg_row; 2336 } 2337 } 2338 2339 /* 2340 * Returns TRUE when messages should be printed with mch_errmsg(). 2341 * This is used when there is no valid screen, so we can see error messages. 2342 * If termcap is not active, we may be writing in an alternate console 2343 * window, cursor positioning may not work correctly (window size may be 2344 * different, e.g. for Win32 console) or we just don't know where the 2345 * cursor is. 2346 */ 2347 int 2348 msg_use_printf(void) 2349 { 2350 return (!msg_check_screen() 2351 #if defined(WIN3264) && !defined(FEAT_GUI_MSWIN) 2352 || !termcap_active 2353 #endif 2354 || (swapping_screen() && !termcap_active) 2355 ); 2356 } 2357 2358 /* 2359 * Print a message when there is no valid screen. 2360 */ 2361 static void 2362 msg_puts_printf(char_u *str, int maxlen) 2363 { 2364 char_u *s = str; 2365 char_u buf[4]; 2366 char_u *p; 2367 2368 #ifdef WIN3264 2369 if (!(silent_mode && p_verbose == 0)) 2370 mch_settmode(TMODE_COOK); /* handle '\r' and '\n' correctly */ 2371 #endif 2372 while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen)) 2373 { 2374 if (!(silent_mode && p_verbose == 0)) 2375 { 2376 /* NL --> CR NL translation (for Unix, not for "--version") */ 2377 /* NL --> CR translation (for Mac) */ 2378 p = &buf[0]; 2379 if (*s == '\n' && !info_message) 2380 *p++ = '\r'; 2381 #if defined(USE_CR) && !defined(MACOS_X_UNIX) 2382 else 2383 #endif 2384 *p++ = *s; 2385 *p = '\0'; 2386 if (info_message) /* informative message, not an error */ 2387 mch_msg((char *)buf); 2388 else 2389 mch_errmsg((char *)buf); 2390 } 2391 2392 /* primitive way to compute the current column */ 2393 #ifdef FEAT_RIGHTLEFT 2394 if (cmdmsg_rl) 2395 { 2396 if (*s == '\r' || *s == '\n') 2397 msg_col = Columns - 1; 2398 else 2399 --msg_col; 2400 } 2401 else 2402 #endif 2403 { 2404 if (*s == '\r' || *s == '\n') 2405 msg_col = 0; 2406 else 2407 ++msg_col; 2408 } 2409 ++s; 2410 } 2411 msg_didout = TRUE; /* assume that line is not empty */ 2412 2413 #ifdef WIN3264 2414 if (!(silent_mode && p_verbose == 0)) 2415 mch_settmode(TMODE_RAW); 2416 #endif 2417 } 2418 2419 /* 2420 * Show the more-prompt and handle the user response. 2421 * This takes care of scrolling back and displaying previously displayed text. 2422 * When at hit-enter prompt "typed_char" is the already typed character, 2423 * otherwise it's NUL. 2424 * Returns TRUE when jumping ahead to "confirm_msg_tail". 2425 */ 2426 static int 2427 do_more_prompt(int typed_char) 2428 { 2429 int used_typed_char = typed_char; 2430 int oldState = State; 2431 int c; 2432 #ifdef FEAT_CON_DIALOG 2433 int retval = FALSE; 2434 #endif 2435 int toscroll; 2436 msgchunk_T *mp_last = NULL; 2437 msgchunk_T *mp; 2438 int i; 2439 2440 if (typed_char == 'G') 2441 { 2442 /* "g<": Find first line on the last page. */ 2443 mp_last = msg_sb_start(last_msgchunk); 2444 for (i = 0; i < Rows - 2 && mp_last != NULL 2445 && mp_last->sb_prev != NULL; ++i) 2446 mp_last = msg_sb_start(mp_last->sb_prev); 2447 } 2448 2449 State = ASKMORE; 2450 #ifdef FEAT_MOUSE 2451 setmouse(); 2452 #endif 2453 if (typed_char == NUL) 2454 msg_moremsg(FALSE); 2455 for (;;) 2456 { 2457 /* 2458 * Get a typed character directly from the user. 2459 */ 2460 if (used_typed_char != NUL) 2461 { 2462 c = used_typed_char; /* was typed at hit-enter prompt */ 2463 used_typed_char = NUL; 2464 } 2465 else 2466 c = get_keystroke(); 2467 2468 #if defined(FEAT_MENU) && defined(FEAT_GUI) 2469 if (c == K_MENU) 2470 { 2471 int idx = get_menu_index(current_menu, ASKMORE); 2472 2473 /* Used a menu. If it starts with CTRL-Y, it must 2474 * be a "Copy" for the clipboard. Otherwise 2475 * assume that we end */ 2476 if (idx == MENU_INDEX_INVALID) 2477 continue; 2478 c = *current_menu->strings[idx]; 2479 if (c != NUL && current_menu->strings[idx][1] != NUL) 2480 ins_typebuf(current_menu->strings[idx] + 1, 2481 current_menu->noremap[idx], 0, TRUE, 2482 current_menu->silent[idx]); 2483 } 2484 #endif 2485 2486 toscroll = 0; 2487 switch (c) 2488 { 2489 case BS: /* scroll one line back */ 2490 case K_BS: 2491 case 'k': 2492 case K_UP: 2493 toscroll = -1; 2494 break; 2495 2496 case CAR: /* one extra line */ 2497 case NL: 2498 case 'j': 2499 case K_DOWN: 2500 toscroll = 1; 2501 break; 2502 2503 case 'u': /* Up half a page */ 2504 toscroll = -(Rows / 2); 2505 break; 2506 2507 case 'd': /* Down half a page */ 2508 toscroll = Rows / 2; 2509 break; 2510 2511 case 'b': /* one page back */ 2512 case K_PAGEUP: 2513 toscroll = -(Rows - 1); 2514 break; 2515 2516 case ' ': /* one extra page */ 2517 case 'f': 2518 case K_PAGEDOWN: 2519 case K_LEFTMOUSE: 2520 toscroll = Rows - 1; 2521 break; 2522 2523 case 'g': /* all the way back to the start */ 2524 toscroll = -999999; 2525 break; 2526 2527 case 'G': /* all the way to the end */ 2528 toscroll = 999999; 2529 lines_left = 999999; 2530 break; 2531 2532 case ':': /* start new command line */ 2533 #ifdef FEAT_CON_DIALOG 2534 if (!confirm_msg_used) 2535 #endif 2536 { 2537 /* Since got_int is set all typeahead will be flushed, but we 2538 * want to keep this ':', remember that in a special way. */ 2539 typeahead_noflush(':'); 2540 cmdline_row = Rows - 1; /* put ':' on this line */ 2541 skip_redraw = TRUE; /* skip redraw once */ 2542 need_wait_return = FALSE; /* don't wait in main() */ 2543 } 2544 /*FALLTHROUGH*/ 2545 case 'q': /* quit */ 2546 case Ctrl_C: 2547 case ESC: 2548 #ifdef FEAT_CON_DIALOG 2549 if (confirm_msg_used) 2550 { 2551 /* Jump to the choices of the dialog. */ 2552 retval = TRUE; 2553 } 2554 else 2555 #endif 2556 { 2557 got_int = TRUE; 2558 quit_more = TRUE; 2559 } 2560 /* When there is some more output (wrapping line) display that 2561 * without another prompt. */ 2562 lines_left = Rows - 1; 2563 break; 2564 2565 #ifdef FEAT_CLIPBOARD 2566 case Ctrl_Y: 2567 /* Strange way to allow copying (yanking) a modeless 2568 * selection at the more prompt. Use CTRL-Y, 2569 * because the same is used in Cmdline-mode and at the 2570 * hit-enter prompt. However, scrolling one line up 2571 * might be expected... */ 2572 if (clip_star.state == SELECT_DONE) 2573 clip_copy_modeless_selection(TRUE); 2574 continue; 2575 #endif 2576 default: /* no valid response */ 2577 msg_moremsg(TRUE); 2578 continue; 2579 } 2580 2581 if (toscroll != 0) 2582 { 2583 if (toscroll < 0) 2584 { 2585 /* go to start of last line */ 2586 if (mp_last == NULL) 2587 mp = msg_sb_start(last_msgchunk); 2588 else if (mp_last->sb_prev != NULL) 2589 mp = msg_sb_start(mp_last->sb_prev); 2590 else 2591 mp = NULL; 2592 2593 /* go to start of line at top of the screen */ 2594 for (i = 0; i < Rows - 2 && mp != NULL && mp->sb_prev != NULL; 2595 ++i) 2596 mp = msg_sb_start(mp->sb_prev); 2597 2598 if (mp != NULL && mp->sb_prev != NULL) 2599 { 2600 /* Find line to be displayed at top. */ 2601 for (i = 0; i > toscroll; --i) 2602 { 2603 if (mp == NULL || mp->sb_prev == NULL) 2604 break; 2605 mp = msg_sb_start(mp->sb_prev); 2606 if (mp_last == NULL) 2607 mp_last = msg_sb_start(last_msgchunk); 2608 else 2609 mp_last = msg_sb_start(mp_last->sb_prev); 2610 } 2611 2612 if (toscroll == -1 && screen_ins_lines(0, 0, 1, 2613 (int)Rows, NULL) == OK) 2614 { 2615 /* display line at top */ 2616 (void)disp_sb_line(0, mp); 2617 } 2618 else 2619 { 2620 /* redisplay all lines */ 2621 screenclear(); 2622 for (i = 0; mp != NULL && i < Rows - 1; ++i) 2623 { 2624 mp = disp_sb_line(i, mp); 2625 ++msg_scrolled; 2626 } 2627 } 2628 toscroll = 0; 2629 } 2630 } 2631 else 2632 { 2633 /* First display any text that we scrolled back. */ 2634 while (toscroll > 0 && mp_last != NULL) 2635 { 2636 /* scroll up, display line at bottom */ 2637 msg_scroll_up(); 2638 inc_msg_scrolled(); 2639 screen_fill((int)Rows - 2, (int)Rows - 1, 0, 2640 (int)Columns, ' ', ' ', 0); 2641 mp_last = disp_sb_line((int)Rows - 2, mp_last); 2642 --toscroll; 2643 } 2644 } 2645 2646 if (toscroll <= 0) 2647 { 2648 /* displayed the requested text, more prompt again */ 2649 screen_fill((int)Rows - 1, (int)Rows, 0, 2650 (int)Columns, ' ', ' ', 0); 2651 msg_moremsg(FALSE); 2652 continue; 2653 } 2654 2655 /* display more text, return to caller */ 2656 lines_left = toscroll; 2657 } 2658 2659 break; 2660 } 2661 2662 /* clear the --more-- message */ 2663 screen_fill((int)Rows - 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2664 State = oldState; 2665 #ifdef FEAT_MOUSE 2666 setmouse(); 2667 #endif 2668 if (quit_more) 2669 { 2670 msg_row = Rows - 1; 2671 msg_col = 0; 2672 } 2673 #ifdef FEAT_RIGHTLEFT 2674 else if (cmdmsg_rl) 2675 msg_col = Columns - 1; 2676 #endif 2677 2678 #ifdef FEAT_CON_DIALOG 2679 return retval; 2680 #else 2681 return FALSE; 2682 #endif 2683 } 2684 2685 #if defined(USE_MCH_ERRMSG) || defined(PROTO) 2686 2687 #ifdef mch_errmsg 2688 # undef mch_errmsg 2689 #endif 2690 #ifdef mch_msg 2691 # undef mch_msg 2692 #endif 2693 2694 /* 2695 * Give an error message. To be used when the screen hasn't been initialized 2696 * yet. When stderr can't be used, collect error messages until the GUI has 2697 * started and they can be displayed in a message box. 2698 */ 2699 void 2700 mch_errmsg(char *str) 2701 { 2702 int len; 2703 2704 #if (defined(UNIX) || defined(FEAT_GUI)) && !defined(ALWAYS_USE_GUI) 2705 /* On Unix use stderr if it's a tty. 2706 * When not going to start the GUI also use stderr. 2707 * On Mac, when started from Finder, stderr is the console. */ 2708 if ( 2709 # ifdef UNIX 2710 # ifdef MACOS_X_UNIX 2711 (isatty(2) && strcmp("/dev/console", ttyname(2)) != 0) 2712 # else 2713 isatty(2) 2714 # endif 2715 # ifdef FEAT_GUI 2716 || 2717 # endif 2718 # endif 2719 # ifdef FEAT_GUI 2720 !(gui.in_use || gui.starting) 2721 # endif 2722 ) 2723 { 2724 fprintf(stderr, "%s", str); 2725 return; 2726 } 2727 #endif 2728 2729 /* avoid a delay for a message that isn't there */ 2730 emsg_on_display = FALSE; 2731 2732 len = (int)STRLEN(str) + 1; 2733 if (error_ga.ga_growsize == 0) 2734 { 2735 error_ga.ga_growsize = 80; 2736 error_ga.ga_itemsize = 1; 2737 } 2738 if (ga_grow(&error_ga, len) == OK) 2739 { 2740 mch_memmove((char_u *)error_ga.ga_data + error_ga.ga_len, 2741 (char_u *)str, len); 2742 #ifdef UNIX 2743 /* remove CR characters, they are displayed */ 2744 { 2745 char_u *p; 2746 2747 p = (char_u *)error_ga.ga_data + error_ga.ga_len; 2748 for (;;) 2749 { 2750 p = vim_strchr(p, '\r'); 2751 if (p == NULL) 2752 break; 2753 *p = ' '; 2754 } 2755 } 2756 #endif 2757 --len; /* don't count the NUL at the end */ 2758 error_ga.ga_len += len; 2759 } 2760 } 2761 2762 /* 2763 * Give a message. To be used when the screen hasn't been initialized yet. 2764 * When there is no tty, collect messages until the GUI has started and they 2765 * can be displayed in a message box. 2766 */ 2767 void 2768 mch_msg(char *str) 2769 { 2770 #if (defined(UNIX) || defined(FEAT_GUI)) && !defined(ALWAYS_USE_GUI) 2771 /* On Unix use stdout if we have a tty. This allows "vim -h | more" and 2772 * uses mch_errmsg() when started from the desktop. 2773 * When not going to start the GUI also use stdout. 2774 * On Mac, when started from Finder, stderr is the console. */ 2775 if ( 2776 # ifdef UNIX 2777 # ifdef MACOS_X_UNIX 2778 (isatty(2) && strcmp("/dev/console", ttyname(2)) != 0) 2779 # else 2780 isatty(2) 2781 # endif 2782 # ifdef FEAT_GUI 2783 || 2784 # endif 2785 # endif 2786 # ifdef FEAT_GUI 2787 !(gui.in_use || gui.starting) 2788 # endif 2789 ) 2790 { 2791 printf("%s", str); 2792 return; 2793 } 2794 # endif 2795 mch_errmsg(str); 2796 } 2797 #endif /* USE_MCH_ERRMSG */ 2798 2799 /* 2800 * Put a character on the screen at the current message position and advance 2801 * to the next position. Only for printable ASCII! 2802 */ 2803 static void 2804 msg_screen_putchar(int c, int attr) 2805 { 2806 msg_didout = TRUE; /* remember that line is not empty */ 2807 screen_putchar(c, msg_row, msg_col, attr); 2808 #ifdef FEAT_RIGHTLEFT 2809 if (cmdmsg_rl) 2810 { 2811 if (--msg_col == 0) 2812 { 2813 msg_col = Columns; 2814 ++msg_row; 2815 } 2816 } 2817 else 2818 #endif 2819 { 2820 if (++msg_col >= Columns) 2821 { 2822 msg_col = 0; 2823 ++msg_row; 2824 } 2825 } 2826 } 2827 2828 void 2829 msg_moremsg(int full) 2830 { 2831 int attr; 2832 char_u *s = (char_u *)_("-- More --"); 2833 2834 attr = hl_attr(HLF_M); 2835 screen_puts(s, (int)Rows - 1, 0, attr); 2836 if (full) 2837 screen_puts((char_u *) 2838 _(" SPACE/d/j: screen/page/line down, b/u/k: up, q: quit "), 2839 (int)Rows - 1, vim_strsize(s), attr); 2840 } 2841 2842 /* 2843 * Repeat the message for the current mode: ASKMORE, EXTERNCMD, CONFIRM or 2844 * exmode_active. 2845 */ 2846 void 2847 repeat_message(void) 2848 { 2849 if (State == ASKMORE) 2850 { 2851 msg_moremsg(TRUE); /* display --more-- message again */ 2852 msg_row = Rows - 1; 2853 } 2854 #ifdef FEAT_CON_DIALOG 2855 else if (State == CONFIRM) 2856 { 2857 display_confirm_msg(); /* display ":confirm" message again */ 2858 msg_row = Rows - 1; 2859 } 2860 #endif 2861 else if (State == EXTERNCMD) 2862 { 2863 windgoto(msg_row, msg_col); /* put cursor back */ 2864 } 2865 else if (State == HITRETURN || State == SETWSIZE) 2866 { 2867 if (msg_row == Rows - 1) 2868 { 2869 /* Avoid drawing the "hit-enter" prompt below the previous one, 2870 * overwrite it. Esp. useful when regaining focus and a 2871 * FocusGained autocmd exists but didn't draw anything. */ 2872 msg_didout = FALSE; 2873 msg_col = 0; 2874 msg_clr_eos(); 2875 } 2876 hit_return_msg(); 2877 msg_row = Rows - 1; 2878 } 2879 } 2880 2881 /* 2882 * msg_check_screen - check if the screen is initialized. 2883 * Also check msg_row and msg_col, if they are too big it may cause a crash. 2884 * While starting the GUI the terminal codes will be set for the GUI, but the 2885 * output goes to the terminal. Don't use the terminal codes then. 2886 */ 2887 static int 2888 msg_check_screen(void) 2889 { 2890 if (!full_screen || !screen_valid(FALSE)) 2891 return FALSE; 2892 2893 if (msg_row >= Rows) 2894 msg_row = Rows - 1; 2895 if (msg_col >= Columns) 2896 msg_col = Columns - 1; 2897 return TRUE; 2898 } 2899 2900 /* 2901 * Clear from current message position to end of screen. 2902 * Skip this when ":silent" was used, no need to clear for redirection. 2903 */ 2904 void 2905 msg_clr_eos(void) 2906 { 2907 if (msg_silent == 0) 2908 msg_clr_eos_force(); 2909 } 2910 2911 /* 2912 * Clear from current message position to end of screen. 2913 * Note: msg_col is not updated, so we remember the end of the message 2914 * for msg_check(). 2915 */ 2916 void 2917 msg_clr_eos_force(void) 2918 { 2919 if (msg_use_printf()) 2920 { 2921 if (full_screen) /* only when termcap codes are valid */ 2922 { 2923 if (*T_CD) 2924 out_str(T_CD); /* clear to end of display */ 2925 else if (*T_CE) 2926 out_str(T_CE); /* clear to end of line */ 2927 } 2928 } 2929 else 2930 { 2931 #ifdef FEAT_RIGHTLEFT 2932 if (cmdmsg_rl) 2933 { 2934 screen_fill(msg_row, msg_row + 1, 0, msg_col + 1, ' ', ' ', 0); 2935 screen_fill(msg_row + 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2936 } 2937 else 2938 #endif 2939 { 2940 screen_fill(msg_row, msg_row + 1, msg_col, (int)Columns, 2941 ' ', ' ', 0); 2942 screen_fill(msg_row + 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2943 } 2944 } 2945 } 2946 2947 /* 2948 * Clear the command line. 2949 */ 2950 void 2951 msg_clr_cmdline(void) 2952 { 2953 msg_row = cmdline_row; 2954 msg_col = 0; 2955 msg_clr_eos_force(); 2956 } 2957 2958 /* 2959 * end putting a message on the screen 2960 * call wait_return if the message does not fit in the available space 2961 * return TRUE if wait_return not called. 2962 */ 2963 int 2964 msg_end(void) 2965 { 2966 /* 2967 * If the string is larger than the window, 2968 * or the ruler option is set and we run into it, 2969 * we have to redraw the window. 2970 * Do not do this if we are abandoning the file or editing the command line. 2971 */ 2972 if (!exiting && need_wait_return && !(State & CMDLINE)) 2973 { 2974 wait_return(FALSE); 2975 return FALSE; 2976 } 2977 out_flush(); 2978 return TRUE; 2979 } 2980 2981 /* 2982 * If the written message runs into the shown command or ruler, we have to 2983 * wait for hit-return and redraw the window later. 2984 */ 2985 void 2986 msg_check(void) 2987 { 2988 if (msg_row == Rows - 1 && msg_col >= sc_col) 2989 { 2990 need_wait_return = TRUE; 2991 redraw_cmdline = TRUE; 2992 } 2993 } 2994 2995 /* 2996 * May write a string to the redirection file. 2997 * When "maxlen" is -1 write the whole string, otherwise up to "maxlen" bytes. 2998 */ 2999 static void 3000 redir_write(char_u *str, int maxlen) 3001 { 3002 char_u *s = str; 3003 static int cur_col = 0; 3004 3005 /* Don't do anything for displaying prompts and the like. */ 3006 if (redir_off) 3007 return; 3008 3009 /* If 'verbosefile' is set prepare for writing in that file. */ 3010 if (*p_vfile != NUL && verbose_fd == NULL) 3011 verbose_open(); 3012 3013 if (redirecting()) 3014 { 3015 /* If the string doesn't start with CR or NL, go to msg_col */ 3016 if (*s != '\n' && *s != '\r') 3017 { 3018 while (cur_col < msg_col) 3019 { 3020 #ifdef FEAT_EVAL 3021 if (redir_reg) 3022 write_reg_contents(redir_reg, (char_u *)" ", -1, TRUE); 3023 else if (redir_vname) 3024 var_redir_str((char_u *)" ", -1); 3025 else 3026 #endif 3027 if (redir_fd != NULL) 3028 fputs(" ", redir_fd); 3029 if (verbose_fd != NULL) 3030 fputs(" ", verbose_fd); 3031 ++cur_col; 3032 } 3033 } 3034 3035 #ifdef FEAT_EVAL 3036 if (redir_reg) 3037 write_reg_contents(redir_reg, s, maxlen, TRUE); 3038 if (redir_vname) 3039 var_redir_str(s, maxlen); 3040 #endif 3041 3042 /* Write and adjust the current column. */ 3043 while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen)) 3044 { 3045 #ifdef FEAT_EVAL 3046 if (!redir_reg && !redir_vname) 3047 #endif 3048 if (redir_fd != NULL) 3049 putc(*s, redir_fd); 3050 if (verbose_fd != NULL) 3051 putc(*s, verbose_fd); 3052 if (*s == '\r' || *s == '\n') 3053 cur_col = 0; 3054 else if (*s == '\t') 3055 cur_col += (8 - cur_col % 8); 3056 else 3057 ++cur_col; 3058 ++s; 3059 } 3060 3061 if (msg_silent != 0) /* should update msg_col */ 3062 msg_col = cur_col; 3063 } 3064 } 3065 3066 int 3067 redirecting(void) 3068 { 3069 return redir_fd != NULL || *p_vfile != NUL 3070 #ifdef FEAT_EVAL 3071 || redir_reg || redir_vname 3072 #endif 3073 ; 3074 } 3075 3076 /* 3077 * Before giving verbose message. 3078 * Must always be called paired with verbose_leave()! 3079 */ 3080 void 3081 verbose_enter(void) 3082 { 3083 if (*p_vfile != NUL) 3084 ++msg_silent; 3085 } 3086 3087 /* 3088 * After giving verbose message. 3089 * Must always be called paired with verbose_enter()! 3090 */ 3091 void 3092 verbose_leave(void) 3093 { 3094 if (*p_vfile != NUL) 3095 if (--msg_silent < 0) 3096 msg_silent = 0; 3097 } 3098 3099 /* 3100 * Like verbose_enter() and set msg_scroll when displaying the message. 3101 */ 3102 void 3103 verbose_enter_scroll(void) 3104 { 3105 if (*p_vfile != NUL) 3106 ++msg_silent; 3107 else 3108 /* always scroll up, don't overwrite */ 3109 msg_scroll = TRUE; 3110 } 3111 3112 /* 3113 * Like verbose_leave() and set cmdline_row when displaying the message. 3114 */ 3115 void 3116 verbose_leave_scroll(void) 3117 { 3118 if (*p_vfile != NUL) 3119 { 3120 if (--msg_silent < 0) 3121 msg_silent = 0; 3122 } 3123 else 3124 cmdline_row = msg_row; 3125 } 3126 3127 /* 3128 * Called when 'verbosefile' is set: stop writing to the file. 3129 */ 3130 void 3131 verbose_stop(void) 3132 { 3133 if (verbose_fd != NULL) 3134 { 3135 fclose(verbose_fd); 3136 verbose_fd = NULL; 3137 } 3138 verbose_did_open = FALSE; 3139 } 3140 3141 /* 3142 * Open the file 'verbosefile'. 3143 * Return FAIL or OK. 3144 */ 3145 int 3146 verbose_open(void) 3147 { 3148 if (verbose_fd == NULL && !verbose_did_open) 3149 { 3150 /* Only give the error message once. */ 3151 verbose_did_open = TRUE; 3152 3153 verbose_fd = mch_fopen((char *)p_vfile, "a"); 3154 if (verbose_fd == NULL) 3155 { 3156 EMSG2(_(e_notopen), p_vfile); 3157 return FAIL; 3158 } 3159 } 3160 return OK; 3161 } 3162 3163 /* 3164 * Give a warning message (for searching). 3165 * Use 'w' highlighting and may repeat the message after redrawing 3166 */ 3167 void 3168 give_warning(char_u *message, int hl) 3169 { 3170 /* Don't do this for ":silent". */ 3171 if (msg_silent != 0) 3172 return; 3173 3174 /* Don't want a hit-enter prompt here. */ 3175 ++no_wait_return; 3176 3177 #ifdef FEAT_EVAL 3178 set_vim_var_string(VV_WARNINGMSG, message, -1); 3179 #endif 3180 vim_free(keep_msg); 3181 keep_msg = NULL; 3182 if (hl) 3183 keep_msg_attr = hl_attr(HLF_W); 3184 else 3185 keep_msg_attr = 0; 3186 if (msg_attr(message, keep_msg_attr) && msg_scrolled == 0) 3187 set_keep_msg(message, keep_msg_attr); 3188 msg_didout = FALSE; /* overwrite this message */ 3189 msg_nowait = TRUE; /* don't wait for this message */ 3190 msg_col = 0; 3191 3192 --no_wait_return; 3193 } 3194 3195 /* 3196 * Advance msg cursor to column "col". 3197 */ 3198 void 3199 msg_advance(int col) 3200 { 3201 if (msg_silent != 0) /* nothing to advance to */ 3202 { 3203 msg_col = col; /* for redirection, may fill it up later */ 3204 return; 3205 } 3206 if (col >= Columns) /* not enough room */ 3207 col = Columns - 1; 3208 #ifdef FEAT_RIGHTLEFT 3209 if (cmdmsg_rl) 3210 while (msg_col > Columns - col) 3211 msg_putchar(' '); 3212 else 3213 #endif 3214 while (msg_col < col) 3215 msg_putchar(' '); 3216 } 3217 3218 #if defined(FEAT_CON_DIALOG) || defined(PROTO) 3219 /* 3220 * Used for "confirm()" function, and the :confirm command prefix. 3221 * Versions which haven't got flexible dialogs yet, and console 3222 * versions, get this generic handler which uses the command line. 3223 * 3224 * type = one of: 3225 * VIM_QUESTION, VIM_INFO, VIM_WARNING, VIM_ERROR or VIM_GENERIC 3226 * title = title string (can be NULL for default) 3227 * (neither used in console dialogs at the moment) 3228 * 3229 * Format of the "buttons" string: 3230 * "Button1Name\nButton2Name\nButton3Name" 3231 * The first button should normally be the default/accept 3232 * The second button should be the 'Cancel' button 3233 * Other buttons- use your imagination! 3234 * A '&' in a button name becomes a shortcut, so each '&' should be before a 3235 * different letter. 3236 */ 3237 int 3238 do_dialog( 3239 int type UNUSED, 3240 char_u *title UNUSED, 3241 char_u *message, 3242 char_u *buttons, 3243 int dfltbutton, 3244 char_u *textfield UNUSED, /* IObuff for inputdialog(), NULL 3245 otherwise */ 3246 int ex_cmd) /* when TRUE pressing : accepts default and starts 3247 Ex command */ 3248 { 3249 int oldState; 3250 int retval = 0; 3251 char_u *hotkeys; 3252 int c; 3253 int i; 3254 3255 #ifndef NO_CONSOLE 3256 /* Don't output anything in silent mode ("ex -s") */ 3257 if (silent_mode) 3258 return dfltbutton; /* return default option */ 3259 #endif 3260 3261 #ifdef FEAT_GUI_DIALOG 3262 /* When GUI is running and 'c' not in 'guioptions', use the GUI dialog */ 3263 if (gui.in_use && vim_strchr(p_go, GO_CONDIALOG) == NULL) 3264 { 3265 c = gui_mch_dialog(type, title, message, buttons, dfltbutton, 3266 textfield, ex_cmd); 3267 /* avoid a hit-enter prompt without clearing the cmdline */ 3268 need_wait_return = FALSE; 3269 emsg_on_display = FALSE; 3270 cmdline_row = msg_row; 3271 3272 /* Flush output to avoid that further messages and redrawing is done 3273 * in the wrong order. */ 3274 out_flush(); 3275 gui_mch_update(); 3276 3277 return c; 3278 } 3279 #endif 3280 3281 oldState = State; 3282 State = CONFIRM; 3283 #ifdef FEAT_MOUSE 3284 setmouse(); 3285 #endif 3286 3287 /* 3288 * Since we wait for a keypress, don't make the 3289 * user press RETURN as well afterwards. 3290 */ 3291 ++no_wait_return; 3292 hotkeys = msg_show_console_dialog(message, buttons, dfltbutton); 3293 3294 if (hotkeys != NULL) 3295 { 3296 for (;;) 3297 { 3298 /* Get a typed character directly from the user. */ 3299 c = get_keystroke(); 3300 switch (c) 3301 { 3302 case CAR: /* User accepts default option */ 3303 case NL: 3304 retval = dfltbutton; 3305 break; 3306 case Ctrl_C: /* User aborts/cancels */ 3307 case ESC: 3308 retval = 0; 3309 break; 3310 default: /* Could be a hotkey? */ 3311 if (c < 0) /* special keys are ignored here */ 3312 continue; 3313 if (c == ':' && ex_cmd) 3314 { 3315 retval = dfltbutton; 3316 ins_char_typebuf(':'); 3317 break; 3318 } 3319 3320 /* Make the character lowercase, as chars in "hotkeys" are. */ 3321 c = MB_TOLOWER(c); 3322 retval = 1; 3323 for (i = 0; hotkeys[i]; ++i) 3324 { 3325 #ifdef FEAT_MBYTE 3326 if (has_mbyte) 3327 { 3328 if ((*mb_ptr2char)(hotkeys + i) == c) 3329 break; 3330 i += (*mb_ptr2len)(hotkeys + i) - 1; 3331 } 3332 else 3333 #endif 3334 if (hotkeys[i] == c) 3335 break; 3336 ++retval; 3337 } 3338 if (hotkeys[i]) 3339 break; 3340 /* No hotkey match, so keep waiting */ 3341 continue; 3342 } 3343 break; 3344 } 3345 3346 vim_free(hotkeys); 3347 } 3348 3349 State = oldState; 3350 #ifdef FEAT_MOUSE 3351 setmouse(); 3352 #endif 3353 --no_wait_return; 3354 msg_end_prompt(); 3355 3356 return retval; 3357 } 3358 3359 static int copy_char(char_u *from, char_u *to, int lowercase); 3360 3361 /* 3362 * Copy one character from "*from" to "*to", taking care of multi-byte 3363 * characters. Return the length of the character in bytes. 3364 */ 3365 static int 3366 copy_char( 3367 char_u *from, 3368 char_u *to, 3369 int lowercase) /* make character lower case */ 3370 { 3371 #ifdef FEAT_MBYTE 3372 int len; 3373 int c; 3374 3375 if (has_mbyte) 3376 { 3377 if (lowercase) 3378 { 3379 c = MB_TOLOWER((*mb_ptr2char)(from)); 3380 return (*mb_char2bytes)(c, to); 3381 } 3382 else 3383 { 3384 len = (*mb_ptr2len)(from); 3385 mch_memmove(to, from, (size_t)len); 3386 return len; 3387 } 3388 } 3389 else 3390 #endif 3391 { 3392 if (lowercase) 3393 *to = (char_u)TOLOWER_LOC(*from); 3394 else 3395 *to = *from; 3396 return 1; 3397 } 3398 } 3399 3400 /* 3401 * Format the dialog string, and display it at the bottom of 3402 * the screen. Return a string of hotkey chars (if defined) for 3403 * each 'button'. If a button has no hotkey defined, the first character of 3404 * the button is used. 3405 * The hotkeys can be multi-byte characters, but without combining chars. 3406 * 3407 * Returns an allocated string with hotkeys, or NULL for error. 3408 */ 3409 static char_u * 3410 msg_show_console_dialog( 3411 char_u *message, 3412 char_u *buttons, 3413 int dfltbutton) 3414 { 3415 int len = 0; 3416 #ifdef FEAT_MBYTE 3417 # define HOTK_LEN (has_mbyte ? MB_MAXBYTES : 1) 3418 #else 3419 # define HOTK_LEN 1 3420 #endif 3421 int lenhotkey = HOTK_LEN; /* count first button */ 3422 char_u *hotk = NULL; 3423 char_u *msgp = NULL; 3424 char_u *hotkp = NULL; 3425 char_u *r; 3426 int copy; 3427 #define HAS_HOTKEY_LEN 30 3428 char_u has_hotkey[HAS_HOTKEY_LEN]; 3429 int first_hotkey = FALSE; /* first char of button is hotkey */ 3430 int idx; 3431 3432 has_hotkey[0] = FALSE; 3433 3434 /* 3435 * First loop: compute the size of memory to allocate. 3436 * Second loop: copy to the allocated memory. 3437 */ 3438 for (copy = 0; copy <= 1; ++copy) 3439 { 3440 r = buttons; 3441 idx = 0; 3442 while (*r) 3443 { 3444 if (*r == DLG_BUTTON_SEP) 3445 { 3446 if (copy) 3447 { 3448 *msgp++ = ','; 3449 *msgp++ = ' '; /* '\n' -> ', ' */ 3450 3451 /* advance to next hotkey and set default hotkey */ 3452 #ifdef FEAT_MBYTE 3453 if (has_mbyte) 3454 hotkp += STRLEN(hotkp); 3455 else 3456 #endif 3457 ++hotkp; 3458 hotkp[copy_char(r + 1, hotkp, TRUE)] = NUL; 3459 if (dfltbutton) 3460 --dfltbutton; 3461 3462 /* If no hotkey is specified first char is used. */ 3463 if (idx < HAS_HOTKEY_LEN - 1 && !has_hotkey[++idx]) 3464 first_hotkey = TRUE; 3465 } 3466 else 3467 { 3468 len += 3; /* '\n' -> ', '; 'x' -> '(x)' */ 3469 lenhotkey += HOTK_LEN; /* each button needs a hotkey */ 3470 if (idx < HAS_HOTKEY_LEN - 1) 3471 has_hotkey[++idx] = FALSE; 3472 } 3473 } 3474 else if (*r == DLG_HOTKEY_CHAR || first_hotkey) 3475 { 3476 if (*r == DLG_HOTKEY_CHAR) 3477 ++r; 3478 first_hotkey = FALSE; 3479 if (copy) 3480 { 3481 if (*r == DLG_HOTKEY_CHAR) /* '&&a' -> '&a' */ 3482 *msgp++ = *r; 3483 else 3484 { 3485 /* '&a' -> '[a]' */ 3486 *msgp++ = (dfltbutton == 1) ? '[' : '('; 3487 msgp += copy_char(r, msgp, FALSE); 3488 *msgp++ = (dfltbutton == 1) ? ']' : ')'; 3489 3490 /* redefine hotkey */ 3491 hotkp[copy_char(r, hotkp, TRUE)] = NUL; 3492 } 3493 } 3494 else 3495 { 3496 ++len; /* '&a' -> '[a]' */ 3497 if (idx < HAS_HOTKEY_LEN - 1) 3498 has_hotkey[idx] = TRUE; 3499 } 3500 } 3501 else 3502 { 3503 /* everything else copy literally */ 3504 if (copy) 3505 msgp += copy_char(r, msgp, FALSE); 3506 } 3507 3508 /* advance to the next character */ 3509 mb_ptr_adv(r); 3510 } 3511 3512 if (copy) 3513 { 3514 *msgp++ = ':'; 3515 *msgp++ = ' '; 3516 *msgp = NUL; 3517 } 3518 else 3519 { 3520 len += (int)(STRLEN(message) 3521 + 2 /* for the NL's */ 3522 + STRLEN(buttons) 3523 + 3); /* for the ": " and NUL */ 3524 lenhotkey++; /* for the NUL */ 3525 3526 /* If no hotkey is specified first char is used. */ 3527 if (!has_hotkey[0]) 3528 { 3529 first_hotkey = TRUE; 3530 len += 2; /* "x" -> "[x]" */ 3531 } 3532 3533 /* 3534 * Now allocate and load the strings 3535 */ 3536 vim_free(confirm_msg); 3537 confirm_msg = alloc(len); 3538 if (confirm_msg == NULL) 3539 return NULL; 3540 *confirm_msg = NUL; 3541 hotk = alloc(lenhotkey); 3542 if (hotk == NULL) 3543 return NULL; 3544 3545 *confirm_msg = '\n'; 3546 STRCPY(confirm_msg + 1, message); 3547 3548 msgp = confirm_msg + 1 + STRLEN(message); 3549 hotkp = hotk; 3550 3551 /* Define first default hotkey. Keep the hotkey string NUL 3552 * terminated to avoid reading past the end. */ 3553 hotkp[copy_char(buttons, hotkp, TRUE)] = NUL; 3554 3555 /* Remember where the choices start, displaying starts here when 3556 * "hotkp" typed at the more prompt. */ 3557 confirm_msg_tail = msgp; 3558 *msgp++ = '\n'; 3559 } 3560 } 3561 3562 display_confirm_msg(); 3563 return hotk; 3564 } 3565 3566 /* 3567 * Display the ":confirm" message. Also called when screen resized. 3568 */ 3569 void 3570 display_confirm_msg(void) 3571 { 3572 /* avoid that 'q' at the more prompt truncates the message here */ 3573 ++confirm_msg_used; 3574 if (confirm_msg != NULL) 3575 msg_puts_attr(confirm_msg, hl_attr(HLF_M)); 3576 --confirm_msg_used; 3577 } 3578 3579 #endif /* FEAT_CON_DIALOG */ 3580 3581 #if defined(FEAT_CON_DIALOG) || defined(FEAT_GUI_DIALOG) 3582 3583 int 3584 vim_dialog_yesno( 3585 int type, 3586 char_u *title, 3587 char_u *message, 3588 int dflt) 3589 { 3590 if (do_dialog(type, 3591 title == NULL ? (char_u *)_("Question") : title, 3592 message, 3593 (char_u *)_("&Yes\n&No"), dflt, NULL, FALSE) == 1) 3594 return VIM_YES; 3595 return VIM_NO; 3596 } 3597 3598 int 3599 vim_dialog_yesnocancel( 3600 int type, 3601 char_u *title, 3602 char_u *message, 3603 int dflt) 3604 { 3605 switch (do_dialog(type, 3606 title == NULL ? (char_u *)_("Question") : title, 3607 message, 3608 (char_u *)_("&Yes\n&No\n&Cancel"), dflt, NULL, FALSE)) 3609 { 3610 case 1: return VIM_YES; 3611 case 2: return VIM_NO; 3612 } 3613 return VIM_CANCEL; 3614 } 3615 3616 int 3617 vim_dialog_yesnoallcancel( 3618 int type, 3619 char_u *title, 3620 char_u *message, 3621 int dflt) 3622 { 3623 switch (do_dialog(type, 3624 title == NULL ? (char_u *)"Question" : title, 3625 message, 3626 (char_u *)_("&Yes\n&No\nSave &All\n&Discard All\n&Cancel"), 3627 dflt, NULL, FALSE)) 3628 { 3629 case 1: return VIM_YES; 3630 case 2: return VIM_NO; 3631 case 3: return VIM_ALL; 3632 case 4: return VIM_DISCARDALL; 3633 } 3634 return VIM_CANCEL; 3635 } 3636 3637 #endif /* FEAT_GUI_DIALOG || FEAT_CON_DIALOG */ 3638 3639 #if defined(FEAT_BROWSE) || defined(PROTO) 3640 /* 3641 * Generic browse function. Calls gui_mch_browse() when possible. 3642 * Later this may pop-up a non-GUI file selector (external command?). 3643 */ 3644 char_u * 3645 do_browse( 3646 int flags, /* BROWSE_SAVE and BROWSE_DIR */ 3647 char_u *title, /* title for the window */ 3648 char_u *dflt, /* default file name (may include directory) */ 3649 char_u *ext, /* extension added */ 3650 char_u *initdir, /* initial directory, NULL for current dir or 3651 when using path from "dflt" */ 3652 char_u *filter, /* file name filter */ 3653 buf_T *buf) /* buffer to read/write for */ 3654 { 3655 char_u *fname; 3656 static char_u *last_dir = NULL; /* last used directory */ 3657 char_u *tofree = NULL; 3658 int save_browse = cmdmod.browse; 3659 3660 /* Must turn off browse to avoid that autocommands will get the 3661 * flag too! */ 3662 cmdmod.browse = FALSE; 3663 3664 if (title == NULL || *title == NUL) 3665 { 3666 if (flags & BROWSE_DIR) 3667 title = (char_u *)_("Select Directory dialog"); 3668 else if (flags & BROWSE_SAVE) 3669 title = (char_u *)_("Save File dialog"); 3670 else 3671 title = (char_u *)_("Open File dialog"); 3672 } 3673 3674 /* When no directory specified, use default file name, default dir, buffer 3675 * dir, last dir or current dir */ 3676 if ((initdir == NULL || *initdir == NUL) && dflt != NULL && *dflt != NUL) 3677 { 3678 if (mch_isdir(dflt)) /* default file name is a directory */ 3679 { 3680 initdir = dflt; 3681 dflt = NULL; 3682 } 3683 else if (gettail(dflt) != dflt) /* default file name includes a path */ 3684 { 3685 tofree = vim_strsave(dflt); 3686 if (tofree != NULL) 3687 { 3688 initdir = tofree; 3689 *gettail(initdir) = NUL; 3690 dflt = gettail(dflt); 3691 } 3692 } 3693 } 3694 3695 if (initdir == NULL || *initdir == NUL) 3696 { 3697 /* When 'browsedir' is a directory, use it */ 3698 if (STRCMP(p_bsdir, "last") != 0 3699 && STRCMP(p_bsdir, "buffer") != 0 3700 && STRCMP(p_bsdir, "current") != 0 3701 && mch_isdir(p_bsdir)) 3702 initdir = p_bsdir; 3703 /* When saving or 'browsedir' is "buffer", use buffer fname */ 3704 else if (((flags & BROWSE_SAVE) || *p_bsdir == 'b') 3705 && buf != NULL && buf->b_ffname != NULL) 3706 { 3707 if (dflt == NULL || *dflt == NUL) 3708 dflt = gettail(curbuf->b_ffname); 3709 tofree = vim_strsave(curbuf->b_ffname); 3710 if (tofree != NULL) 3711 { 3712 initdir = tofree; 3713 *gettail(initdir) = NUL; 3714 } 3715 } 3716 /* When 'browsedir' is "last", use dir from last browse */ 3717 else if (*p_bsdir == 'l') 3718 initdir = last_dir; 3719 /* When 'browsedir is "current", use current directory. This is the 3720 * default already, leave initdir empty. */ 3721 } 3722 3723 # ifdef FEAT_GUI 3724 if (gui.in_use) /* when this changes, also adjust f_has()! */ 3725 { 3726 if (filter == NULL 3727 # ifdef FEAT_EVAL 3728 && (filter = get_var_value((char_u *)"b:browsefilter")) == NULL 3729 && (filter = get_var_value((char_u *)"g:browsefilter")) == NULL 3730 # endif 3731 ) 3732 filter = BROWSE_FILTER_DEFAULT; 3733 if (flags & BROWSE_DIR) 3734 { 3735 # if defined(FEAT_GUI_GTK) || defined(WIN3264) 3736 /* For systems that have a directory dialog. */ 3737 fname = gui_mch_browsedir(title, initdir); 3738 # else 3739 /* Generic solution for selecting a directory: select a file and 3740 * remove the file name. */ 3741 fname = gui_mch_browse(0, title, dflt, ext, initdir, (char_u *)""); 3742 # endif 3743 # if !defined(FEAT_GUI_GTK) 3744 /* Win32 adds a dummy file name, others return an arbitrary file 3745 * name. GTK+ 2 returns only the directory, */ 3746 if (fname != NULL && *fname != NUL && !mch_isdir(fname)) 3747 { 3748 /* Remove the file name. */ 3749 char_u *tail = gettail_sep(fname); 3750 3751 if (tail == fname) 3752 *tail++ = '.'; /* use current dir */ 3753 *tail = NUL; 3754 } 3755 # endif 3756 } 3757 else 3758 fname = gui_mch_browse(flags & BROWSE_SAVE, 3759 title, dflt, ext, initdir, filter); 3760 3761 /* We hang around in the dialog for a while, the user might do some 3762 * things to our files. The Win32 dialog allows deleting or renaming 3763 * a file, check timestamps. */ 3764 need_check_timestamps = TRUE; 3765 did_check_timestamps = FALSE; 3766 } 3767 else 3768 # endif 3769 { 3770 /* TODO: non-GUI file selector here */ 3771 EMSG(_("E338: Sorry, no file browser in console mode")); 3772 fname = NULL; 3773 } 3774 3775 /* keep the directory for next time */ 3776 if (fname != NULL) 3777 { 3778 vim_free(last_dir); 3779 last_dir = vim_strsave(fname); 3780 if (last_dir != NULL && !(flags & BROWSE_DIR)) 3781 { 3782 *gettail(last_dir) = NUL; 3783 if (*last_dir == NUL) 3784 { 3785 /* filename only returned, must be in current dir */ 3786 vim_free(last_dir); 3787 last_dir = alloc(MAXPATHL); 3788 if (last_dir != NULL) 3789 mch_dirname(last_dir, MAXPATHL); 3790 } 3791 } 3792 } 3793 3794 vim_free(tofree); 3795 cmdmod.browse = save_browse; 3796 3797 return fname; 3798 } 3799 #endif 3800 3801 #if defined(FEAT_EVAL) 3802 static char *e_printf = N_("E766: Insufficient arguments for printf()"); 3803 3804 static long tv_nr(typval_T *tvs, int *idxp); 3805 static char *tv_str(typval_T *tvs, int *idxp); 3806 # ifdef FEAT_FLOAT 3807 static double tv_float(typval_T *tvs, int *idxp); 3808 # endif 3809 3810 /* 3811 * Get number argument from "idxp" entry in "tvs". First entry is 1. 3812 */ 3813 static long 3814 tv_nr(typval_T *tvs, int *idxp) 3815 { 3816 int idx = *idxp - 1; 3817 long n = 0; 3818 int err = FALSE; 3819 3820 if (tvs[idx].v_type == VAR_UNKNOWN) 3821 EMSG(_(e_printf)); 3822 else 3823 { 3824 ++*idxp; 3825 n = get_tv_number_chk(&tvs[idx], &err); 3826 if (err) 3827 n = 0; 3828 } 3829 return n; 3830 } 3831 3832 /* 3833 * Get string argument from "idxp" entry in "tvs". First entry is 1. 3834 * Returns NULL for an error. 3835 */ 3836 static char * 3837 tv_str(typval_T *tvs, int *idxp) 3838 { 3839 int idx = *idxp - 1; 3840 char *s = NULL; 3841 3842 if (tvs[idx].v_type == VAR_UNKNOWN) 3843 EMSG(_(e_printf)); 3844 else 3845 { 3846 ++*idxp; 3847 s = (char *)get_tv_string_chk(&tvs[idx]); 3848 } 3849 return s; 3850 } 3851 3852 # ifdef FEAT_FLOAT 3853 /* 3854 * Get float argument from "idxp" entry in "tvs". First entry is 1. 3855 */ 3856 static double 3857 tv_float(typval_T *tvs, int *idxp) 3858 { 3859 int idx = *idxp - 1; 3860 double f = 0; 3861 3862 if (tvs[idx].v_type == VAR_UNKNOWN) 3863 EMSG(_(e_printf)); 3864 else 3865 { 3866 ++*idxp; 3867 if (tvs[idx].v_type == VAR_FLOAT) 3868 f = tvs[idx].vval.v_float; 3869 else if (tvs[idx].v_type == VAR_NUMBER) 3870 f = tvs[idx].vval.v_number; 3871 else 3872 EMSG(_("E807: Expected Float argument for printf()")); 3873 } 3874 return f; 3875 } 3876 # endif 3877 #endif 3878 3879 /* 3880 * This code was included to provide a portable vsnprintf() and snprintf(). 3881 * Some systems may provide their own, but we always use this one for 3882 * consistency. 3883 * 3884 * This code is based on snprintf.c - a portable implementation of snprintf 3885 * by Mark Martinec <[email protected]>, Version 2.2, 2000-10-06. 3886 * Included with permission. It was heavily modified to fit in Vim. 3887 * The original code, including useful comments, can be found here: 3888 * http://www.ijs.si/software/snprintf/ 3889 * 3890 * This snprintf() only supports the following conversion specifiers: 3891 * s, c, d, u, o, x, X, p (and synonyms: i, D, U, O - see below) 3892 * with flags: '-', '+', ' ', '0' and '#'. 3893 * An asterisk is supported for field width as well as precision. 3894 * 3895 * Limited support for floating point was added: 'f', 'e', 'E', 'g', 'G'. 3896 * 3897 * Length modifiers 'h' (short int) and 'l' (long int) are supported. 3898 * 'll' (long long int) is not supported. 3899 * 3900 * The locale is not used, the string is used as a byte string. This is only 3901 * relevant for double-byte encodings where the second byte may be '%'. 3902 * 3903 * It is permitted for "str_m" to be zero, and it is permitted to specify NULL 3904 * pointer for resulting string argument if "str_m" is zero (as per ISO C99). 3905 * 3906 * The return value is the number of characters which would be generated 3907 * for the given input, excluding the trailing NUL. If this value 3908 * is greater or equal to "str_m", not all characters from the result 3909 * have been stored in str, output bytes beyond the ("str_m"-1) -th character 3910 * are discarded. If "str_m" is greater than zero it is guaranteed 3911 * the resulting string will be NUL-terminated. 3912 */ 3913 3914 /* 3915 * When va_list is not supported we only define vim_snprintf(). 3916 * 3917 * vim_vsnprintf() can be invoked with either "va_list" or a list of 3918 * "typval_T". When the latter is not used it must be NULL. 3919 */ 3920 3921 /* When generating prototypes all of this is skipped, cproto doesn't 3922 * understand this. */ 3923 #ifndef PROTO 3924 3925 /* Like vim_vsnprintf() but append to the string. */ 3926 int 3927 vim_snprintf_add(char *str, size_t str_m, char *fmt, ...) 3928 { 3929 va_list ap; 3930 int str_l; 3931 size_t len = STRLEN(str); 3932 size_t space; 3933 3934 if (str_m <= len) 3935 space = 0; 3936 else 3937 space = str_m - len; 3938 va_start(ap, fmt); 3939 str_l = vim_vsnprintf(str + len, space, fmt, ap, NULL); 3940 va_end(ap); 3941 return str_l; 3942 } 3943 3944 int 3945 vim_snprintf(char *str, size_t str_m, char *fmt, ...) 3946 { 3947 va_list ap; 3948 int str_l; 3949 3950 va_start(ap, fmt); 3951 str_l = vim_vsnprintf(str, str_m, fmt, ap, NULL); 3952 va_end(ap); 3953 return str_l; 3954 } 3955 3956 int 3957 vim_vsnprintf( 3958 char *str, 3959 size_t str_m, 3960 char *fmt, 3961 va_list ap, 3962 typval_T *tvs) 3963 { 3964 size_t str_l = 0; 3965 char *p = fmt; 3966 int arg_idx = 1; 3967 3968 if (p == NULL) 3969 p = ""; 3970 while (*p != NUL) 3971 { 3972 if (*p != '%') 3973 { 3974 char *q = strchr(p + 1, '%'); 3975 size_t n = (q == NULL) ? STRLEN(p) : (size_t)(q - p); 3976 3977 /* Copy up to the next '%' or NUL without any changes. */ 3978 if (str_l < str_m) 3979 { 3980 size_t avail = str_m - str_l; 3981 3982 mch_memmove(str + str_l, p, n > avail ? avail : n); 3983 } 3984 p += n; 3985 str_l += n; 3986 } 3987 else 3988 { 3989 size_t min_field_width = 0, precision = 0; 3990 int zero_padding = 0, precision_specified = 0, justify_left = 0; 3991 int alternate_form = 0, force_sign = 0; 3992 3993 /* If both the ' ' and '+' flags appear, the ' ' flag should be 3994 * ignored. */ 3995 int space_for_positive = 1; 3996 3997 /* allowed values: \0, h, l, L */ 3998 char length_modifier = '\0'; 3999 4000 /* temporary buffer for simple numeric->string conversion */ 4001 # ifdef FEAT_FLOAT 4002 # define TMP_LEN 350 /* On my system 1e308 is the biggest number possible. 4003 * That sounds reasonable to use as the maximum 4004 * printable. */ 4005 # else 4006 # define TMP_LEN 32 4007 # endif 4008 char tmp[TMP_LEN]; 4009 4010 /* string address in case of string argument */ 4011 char *str_arg; 4012 4013 /* natural field width of arg without padding and sign */ 4014 size_t str_arg_l; 4015 4016 /* unsigned char argument value - only defined for c conversion. 4017 * N.B. standard explicitly states the char argument for the c 4018 * conversion is unsigned */ 4019 unsigned char uchar_arg; 4020 4021 /* number of zeros to be inserted for numeric conversions as 4022 * required by the precision or minimal field width */ 4023 size_t number_of_zeros_to_pad = 0; 4024 4025 /* index into tmp where zero padding is to be inserted */ 4026 size_t zero_padding_insertion_ind = 0; 4027 4028 /* current conversion specifier character */ 4029 char fmt_spec = '\0'; 4030 4031 str_arg = NULL; 4032 p++; /* skip '%' */ 4033 4034 /* parse flags */ 4035 while (*p == '0' || *p == '-' || *p == '+' || *p == ' ' 4036 || *p == '#' || *p == '\'') 4037 { 4038 switch (*p) 4039 { 4040 case '0': zero_padding = 1; break; 4041 case '-': justify_left = 1; break; 4042 case '+': force_sign = 1; space_for_positive = 0; break; 4043 case ' ': force_sign = 1; 4044 /* If both the ' ' and '+' flags appear, the ' ' 4045 * flag should be ignored */ 4046 break; 4047 case '#': alternate_form = 1; break; 4048 case '\'': break; 4049 } 4050 p++; 4051 } 4052 /* If the '0' and '-' flags both appear, the '0' flag should be 4053 * ignored. */ 4054 4055 /* parse field width */ 4056 if (*p == '*') 4057 { 4058 int j; 4059 4060 p++; 4061 j = 4062 # if defined(FEAT_EVAL) 4063 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4064 # endif 4065 va_arg(ap, int); 4066 if (j >= 0) 4067 min_field_width = j; 4068 else 4069 { 4070 min_field_width = -j; 4071 justify_left = 1; 4072 } 4073 } 4074 else if (VIM_ISDIGIT((int)(*p))) 4075 { 4076 /* size_t could be wider than unsigned int; make sure we treat 4077 * argument like common implementations do */ 4078 unsigned int uj = *p++ - '0'; 4079 4080 while (VIM_ISDIGIT((int)(*p))) 4081 uj = 10 * uj + (unsigned int)(*p++ - '0'); 4082 min_field_width = uj; 4083 } 4084 4085 /* parse precision */ 4086 if (*p == '.') 4087 { 4088 p++; 4089 precision_specified = 1; 4090 if (*p == '*') 4091 { 4092 int j; 4093 4094 j = 4095 # if defined(FEAT_EVAL) 4096 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4097 # endif 4098 va_arg(ap, int); 4099 p++; 4100 if (j >= 0) 4101 precision = j; 4102 else 4103 { 4104 precision_specified = 0; 4105 precision = 0; 4106 } 4107 } 4108 else if (VIM_ISDIGIT((int)(*p))) 4109 { 4110 /* size_t could be wider than unsigned int; make sure we 4111 * treat argument like common implementations do */ 4112 unsigned int uj = *p++ - '0'; 4113 4114 while (VIM_ISDIGIT((int)(*p))) 4115 uj = 10 * uj + (unsigned int)(*p++ - '0'); 4116 precision = uj; 4117 } 4118 } 4119 4120 /* parse 'h', 'l' and 'll' length modifiers */ 4121 if (*p == 'h' || *p == 'l') 4122 { 4123 length_modifier = *p; 4124 p++; 4125 if (length_modifier == 'l' && *p == 'l') 4126 { 4127 /* double l = long long */ 4128 length_modifier = 'l'; /* treat it as a single 'l' */ 4129 p++; 4130 } 4131 } 4132 fmt_spec = *p; 4133 4134 /* common synonyms: */ 4135 switch (fmt_spec) 4136 { 4137 case 'i': fmt_spec = 'd'; break; 4138 case 'D': fmt_spec = 'd'; length_modifier = 'l'; break; 4139 case 'U': fmt_spec = 'u'; length_modifier = 'l'; break; 4140 case 'O': fmt_spec = 'o'; length_modifier = 'l'; break; 4141 case 'F': fmt_spec = 'f'; break; 4142 default: break; 4143 } 4144 4145 /* get parameter value, do initial processing */ 4146 switch (fmt_spec) 4147 { 4148 /* '%' and 'c' behave similar to 's' regarding flags and field 4149 * widths */ 4150 case '%': 4151 case 'c': 4152 case 's': 4153 case 'S': 4154 length_modifier = '\0'; 4155 str_arg_l = 1; 4156 switch (fmt_spec) 4157 { 4158 case '%': 4159 str_arg = p; 4160 break; 4161 4162 case 'c': 4163 { 4164 int j; 4165 4166 j = 4167 # if defined(FEAT_EVAL) 4168 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4169 # endif 4170 va_arg(ap, int); 4171 /* standard demands unsigned char */ 4172 uchar_arg = (unsigned char)j; 4173 str_arg = (char *)&uchar_arg; 4174 break; 4175 } 4176 4177 case 's': 4178 case 'S': 4179 str_arg = 4180 # if defined(FEAT_EVAL) 4181 tvs != NULL ? tv_str(tvs, &arg_idx) : 4182 # endif 4183 va_arg(ap, char *); 4184 if (str_arg == NULL) 4185 { 4186 str_arg = "[NULL]"; 4187 str_arg_l = 6; 4188 } 4189 /* make sure not to address string beyond the specified 4190 * precision !!! */ 4191 else if (!precision_specified) 4192 str_arg_l = strlen(str_arg); 4193 /* truncate string if necessary as requested by precision */ 4194 else if (precision == 0) 4195 str_arg_l = 0; 4196 else 4197 { 4198 /* Don't put the #if inside memchr(), it can be a 4199 * macro. */ 4200 # if VIM_SIZEOF_INT <= 2 4201 char *q = memchr(str_arg, '\0', precision); 4202 # else 4203 /* memchr on HP does not like n > 2^31 !!! */ 4204 char *q = memchr(str_arg, '\0', 4205 precision <= (size_t)0x7fffffffL ? precision 4206 : (size_t)0x7fffffffL); 4207 # endif 4208 str_arg_l = (q == NULL) ? precision 4209 : (size_t)(q - str_arg); 4210 } 4211 # ifdef FEAT_MBYTE 4212 if (fmt_spec == 'S') 4213 { 4214 if (min_field_width != 0) 4215 min_field_width += STRLEN(str_arg) 4216 - mb_string2cells((char_u *)str_arg, -1); 4217 if (precision) 4218 { 4219 char_u *p1 = (char_u *)str_arg; 4220 size_t i; 4221 4222 for (i = 0; i < precision && *p1; i++) 4223 p1 += mb_ptr2len(p1); 4224 4225 str_arg_l = precision = p1 - (char_u *)str_arg; 4226 } 4227 } 4228 # endif 4229 break; 4230 4231 default: 4232 break; 4233 } 4234 break; 4235 4236 case 'd': case 'u': case 'o': case 'x': case 'X': case 'p': 4237 { 4238 /* NOTE: the u, o, x, X and p conversion specifiers 4239 * imply the value is unsigned; d implies a signed 4240 * value */ 4241 4242 /* 0 if numeric argument is zero (or if pointer is 4243 * NULL for 'p'), +1 if greater than zero (or nonzero 4244 * for unsigned arguments), -1 if negative (unsigned 4245 * argument is never negative) */ 4246 int arg_sign = 0; 4247 4248 /* only defined for length modifier h, or for no 4249 * length modifiers */ 4250 int int_arg = 0; 4251 unsigned int uint_arg = 0; 4252 4253 /* only defined for length modifier l */ 4254 long int long_arg = 0; 4255 unsigned long int ulong_arg = 0; 4256 4257 /* pointer argument value -only defined for p 4258 * conversion */ 4259 void *ptr_arg = NULL; 4260 4261 if (fmt_spec == 'p') 4262 { 4263 length_modifier = '\0'; 4264 ptr_arg = 4265 # if defined(FEAT_EVAL) 4266 tvs != NULL ? (void *)tv_str(tvs, &arg_idx) : 4267 # endif 4268 va_arg(ap, void *); 4269 if (ptr_arg != NULL) 4270 arg_sign = 1; 4271 } 4272 else if (fmt_spec == 'd') 4273 { 4274 /* signed */ 4275 switch (length_modifier) 4276 { 4277 case '\0': 4278 case 'h': 4279 /* char and short arguments are passed as int. */ 4280 int_arg = 4281 # if defined(FEAT_EVAL) 4282 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4283 # endif 4284 va_arg(ap, int); 4285 if (int_arg > 0) 4286 arg_sign = 1; 4287 else if (int_arg < 0) 4288 arg_sign = -1; 4289 break; 4290 case 'l': 4291 long_arg = 4292 # if defined(FEAT_EVAL) 4293 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4294 # endif 4295 va_arg(ap, long int); 4296 if (long_arg > 0) 4297 arg_sign = 1; 4298 else if (long_arg < 0) 4299 arg_sign = -1; 4300 break; 4301 } 4302 } 4303 else 4304 { 4305 /* unsigned */ 4306 switch (length_modifier) 4307 { 4308 case '\0': 4309 case 'h': 4310 uint_arg = 4311 # if defined(FEAT_EVAL) 4312 tvs != NULL ? (unsigned) 4313 tv_nr(tvs, &arg_idx) : 4314 # endif 4315 va_arg(ap, unsigned int); 4316 if (uint_arg != 0) 4317 arg_sign = 1; 4318 break; 4319 case 'l': 4320 ulong_arg = 4321 # if defined(FEAT_EVAL) 4322 tvs != NULL ? (unsigned long) 4323 tv_nr(tvs, &arg_idx) : 4324 # endif 4325 va_arg(ap, unsigned long int); 4326 if (ulong_arg != 0) 4327 arg_sign = 1; 4328 break; 4329 } 4330 } 4331 4332 str_arg = tmp; 4333 str_arg_l = 0; 4334 4335 /* NOTE: 4336 * For d, i, u, o, x, and X conversions, if precision is 4337 * specified, the '0' flag should be ignored. This is so 4338 * with Solaris 2.6, Digital UNIX 4.0, HPUX 10, Linux, 4339 * FreeBSD, NetBSD; but not with Perl. 4340 */ 4341 if (precision_specified) 4342 zero_padding = 0; 4343 if (fmt_spec == 'd') 4344 { 4345 if (force_sign && arg_sign >= 0) 4346 tmp[str_arg_l++] = space_for_positive ? ' ' : '+'; 4347 /* leave negative numbers for sprintf to handle, to 4348 * avoid handling tricky cases like (short int)-32768 */ 4349 } 4350 else if (alternate_form) 4351 { 4352 if (arg_sign != 0 4353 && (fmt_spec == 'x' || fmt_spec == 'X') ) 4354 { 4355 tmp[str_arg_l++] = '0'; 4356 tmp[str_arg_l++] = fmt_spec; 4357 } 4358 /* alternate form should have no effect for p 4359 * conversion, but ... */ 4360 } 4361 4362 zero_padding_insertion_ind = str_arg_l; 4363 if (!precision_specified) 4364 precision = 1; /* default precision is 1 */ 4365 if (precision == 0 && arg_sign == 0) 4366 { 4367 /* When zero value is formatted with an explicit 4368 * precision 0, the resulting formatted string is 4369 * empty (d, i, u, o, x, X, p). */ 4370 } 4371 else 4372 { 4373 char f[5]; 4374 int f_l = 0; 4375 4376 /* construct a simple format string for sprintf */ 4377 f[f_l++] = '%'; 4378 if (!length_modifier) 4379 ; 4380 else if (length_modifier == '2') 4381 { 4382 f[f_l++] = 'l'; 4383 f[f_l++] = 'l'; 4384 } 4385 else 4386 f[f_l++] = length_modifier; 4387 f[f_l++] = fmt_spec; 4388 f[f_l++] = '\0'; 4389 4390 if (fmt_spec == 'p') 4391 str_arg_l += sprintf(tmp + str_arg_l, f, ptr_arg); 4392 else if (fmt_spec == 'd') 4393 { 4394 /* signed */ 4395 switch (length_modifier) 4396 { 4397 case '\0': 4398 case 'h': str_arg_l += sprintf( 4399 tmp + str_arg_l, f, int_arg); 4400 break; 4401 case 'l': str_arg_l += sprintf( 4402 tmp + str_arg_l, f, long_arg); 4403 break; 4404 } 4405 } 4406 else 4407 { 4408 /* unsigned */ 4409 switch (length_modifier) 4410 { 4411 case '\0': 4412 case 'h': str_arg_l += sprintf( 4413 tmp + str_arg_l, f, uint_arg); 4414 break; 4415 case 'l': str_arg_l += sprintf( 4416 tmp + str_arg_l, f, ulong_arg); 4417 break; 4418 } 4419 } 4420 4421 /* include the optional minus sign and possible 4422 * "0x" in the region before the zero padding 4423 * insertion point */ 4424 if (zero_padding_insertion_ind < str_arg_l 4425 && tmp[zero_padding_insertion_ind] == '-') 4426 zero_padding_insertion_ind++; 4427 if (zero_padding_insertion_ind + 1 < str_arg_l 4428 && tmp[zero_padding_insertion_ind] == '0' 4429 && (tmp[zero_padding_insertion_ind + 1] == 'x' 4430 || tmp[zero_padding_insertion_ind + 1] == 'X')) 4431 zero_padding_insertion_ind += 2; 4432 } 4433 4434 { 4435 size_t num_of_digits = str_arg_l 4436 - zero_padding_insertion_ind; 4437 4438 if (alternate_form && fmt_spec == 'o' 4439 /* unless zero is already the first 4440 * character */ 4441 && !(zero_padding_insertion_ind < str_arg_l 4442 && tmp[zero_padding_insertion_ind] == '0')) 4443 { 4444 /* assure leading zero for alternate-form 4445 * octal numbers */ 4446 if (!precision_specified 4447 || precision < num_of_digits + 1) 4448 { 4449 /* precision is increased to force the 4450 * first character to be zero, except if a 4451 * zero value is formatted with an 4452 * explicit precision of zero */ 4453 precision = num_of_digits + 1; 4454 precision_specified = 1; 4455 } 4456 } 4457 /* zero padding to specified precision? */ 4458 if (num_of_digits < precision) 4459 number_of_zeros_to_pad = precision - num_of_digits; 4460 } 4461 /* zero padding to specified minimal field width? */ 4462 if (!justify_left && zero_padding) 4463 { 4464 int n = (int)(min_field_width - (str_arg_l 4465 + number_of_zeros_to_pad)); 4466 if (n > 0) 4467 number_of_zeros_to_pad += n; 4468 } 4469 break; 4470 } 4471 4472 # ifdef FEAT_FLOAT 4473 case 'f': 4474 case 'e': 4475 case 'E': 4476 case 'g': 4477 case 'G': 4478 { 4479 /* Floating point. */ 4480 double f; 4481 double abs_f; 4482 char format[40]; 4483 int l; 4484 int remove_trailing_zeroes = FALSE; 4485 4486 f = 4487 # if defined(FEAT_EVAL) 4488 tvs != NULL ? tv_float(tvs, &arg_idx) : 4489 # endif 4490 va_arg(ap, double); 4491 abs_f = f < 0 ? -f : f; 4492 4493 if (fmt_spec == 'g' || fmt_spec == 'G') 4494 { 4495 /* Would be nice to use %g directly, but it prints 4496 * "1.0" as "1", we don't want that. */ 4497 if ((abs_f >= 0.001 && abs_f < 10000000.0) 4498 || abs_f == 0.0) 4499 fmt_spec = 'f'; 4500 else 4501 fmt_spec = fmt_spec == 'g' ? 'e' : 'E'; 4502 remove_trailing_zeroes = TRUE; 4503 } 4504 4505 if (fmt_spec == 'f' && 4506 # ifdef VAX 4507 abs_f > 1.0e38 4508 # else 4509 abs_f > 1.0e307 4510 # endif 4511 ) 4512 { 4513 /* Avoid a buffer overflow */ 4514 strcpy(tmp, "inf"); 4515 str_arg_l = 3; 4516 } 4517 else 4518 { 4519 format[0] = '%'; 4520 l = 1; 4521 if (precision_specified) 4522 { 4523 size_t max_prec = TMP_LEN - 10; 4524 4525 /* Make sure we don't get more digits than we 4526 * have room for. */ 4527 if (fmt_spec == 'f' && abs_f > 1.0) 4528 max_prec -= (size_t)log10(abs_f); 4529 if (precision > max_prec) 4530 precision = max_prec; 4531 l += sprintf(format + 1, ".%d", (int)precision); 4532 } 4533 format[l] = fmt_spec; 4534 format[l + 1] = NUL; 4535 str_arg_l = sprintf(tmp, format, f); 4536 4537 if (remove_trailing_zeroes) 4538 { 4539 int i; 4540 char *tp; 4541 4542 /* Using %g or %G: remove superfluous zeroes. */ 4543 if (fmt_spec == 'f') 4544 tp = tmp + str_arg_l - 1; 4545 else 4546 { 4547 tp = (char *)vim_strchr((char_u *)tmp, 4548 fmt_spec == 'e' ? 'e' : 'E'); 4549 if (tp != NULL) 4550 { 4551 /* Remove superfluous '+' and leading 4552 * zeroes from the exponent. */ 4553 if (tp[1] == '+') 4554 { 4555 /* Change "1.0e+07" to "1.0e07" */ 4556 STRMOVE(tp + 1, tp + 2); 4557 --str_arg_l; 4558 } 4559 i = (tp[1] == '-') ? 2 : 1; 4560 while (tp[i] == '0') 4561 { 4562 /* Change "1.0e07" to "1.0e7" */ 4563 STRMOVE(tp + i, tp + i + 1); 4564 --str_arg_l; 4565 } 4566 --tp; 4567 } 4568 } 4569 4570 if (tp != NULL && !precision_specified) 4571 /* Remove trailing zeroes, but keep the one 4572 * just after a dot. */ 4573 while (tp > tmp + 2 && *tp == '0' 4574 && tp[-1] != '.') 4575 { 4576 STRMOVE(tp, tp + 1); 4577 --tp; 4578 --str_arg_l; 4579 } 4580 } 4581 else 4582 { 4583 char *tp; 4584 4585 /* Be consistent: some printf("%e") use 1.0e+12 4586 * and some 1.0e+012. Remove one zero in the last 4587 * case. */ 4588 tp = (char *)vim_strchr((char_u *)tmp, 4589 fmt_spec == 'e' ? 'e' : 'E'); 4590 if (tp != NULL && (tp[1] == '+' || tp[1] == '-') 4591 && tp[2] == '0' 4592 && vim_isdigit(tp[3]) 4593 && vim_isdigit(tp[4])) 4594 { 4595 STRMOVE(tp + 2, tp + 3); 4596 --str_arg_l; 4597 } 4598 } 4599 } 4600 str_arg = tmp; 4601 break; 4602 } 4603 # endif 4604 4605 default: 4606 /* unrecognized conversion specifier, keep format string 4607 * as-is */ 4608 zero_padding = 0; /* turn zero padding off for non-numeric 4609 conversion */ 4610 justify_left = 1; 4611 min_field_width = 0; /* reset flags */ 4612 4613 /* discard the unrecognized conversion, just keep * 4614 * the unrecognized conversion character */ 4615 str_arg = p; 4616 str_arg_l = 0; 4617 if (*p != NUL) 4618 str_arg_l++; /* include invalid conversion specifier 4619 unchanged if not at end-of-string */ 4620 break; 4621 } 4622 4623 if (*p != NUL) 4624 p++; /* step over the just processed conversion specifier */ 4625 4626 /* insert padding to the left as requested by min_field_width; 4627 * this does not include the zero padding in case of numerical 4628 * conversions*/ 4629 if (!justify_left) 4630 { 4631 /* left padding with blank or zero */ 4632 int pn = (int)(min_field_width - (str_arg_l + number_of_zeros_to_pad)); 4633 4634 if (pn > 0) 4635 { 4636 if (str_l < str_m) 4637 { 4638 size_t avail = str_m - str_l; 4639 4640 vim_memset(str + str_l, zero_padding ? '0' : ' ', 4641 (size_t)pn > avail ? avail 4642 : (size_t)pn); 4643 } 4644 str_l += pn; 4645 } 4646 } 4647 4648 /* zero padding as requested by the precision or by the minimal 4649 * field width for numeric conversions required? */ 4650 if (number_of_zeros_to_pad == 0) 4651 { 4652 /* will not copy first part of numeric right now, * 4653 * force it to be copied later in its entirety */ 4654 zero_padding_insertion_ind = 0; 4655 } 4656 else 4657 { 4658 /* insert first part of numerics (sign or '0x') before zero 4659 * padding */ 4660 int zn = (int)zero_padding_insertion_ind; 4661 4662 if (zn > 0) 4663 { 4664 if (str_l < str_m) 4665 { 4666 size_t avail = str_m - str_l; 4667 4668 mch_memmove(str + str_l, str_arg, 4669 (size_t)zn > avail ? avail 4670 : (size_t)zn); 4671 } 4672 str_l += zn; 4673 } 4674 4675 /* insert zero padding as requested by the precision or min 4676 * field width */ 4677 zn = (int)number_of_zeros_to_pad; 4678 if (zn > 0) 4679 { 4680 if (str_l < str_m) 4681 { 4682 size_t avail = str_m-str_l; 4683 4684 vim_memset(str + str_l, '0', 4685 (size_t)zn > avail ? avail 4686 : (size_t)zn); 4687 } 4688 str_l += zn; 4689 } 4690 } 4691 4692 /* insert formatted string 4693 * (or as-is conversion specifier for unknown conversions) */ 4694 { 4695 int sn = (int)(str_arg_l - zero_padding_insertion_ind); 4696 4697 if (sn > 0) 4698 { 4699 if (str_l < str_m) 4700 { 4701 size_t avail = str_m - str_l; 4702 4703 mch_memmove(str + str_l, 4704 str_arg + zero_padding_insertion_ind, 4705 (size_t)sn > avail ? avail : (size_t)sn); 4706 } 4707 str_l += sn; 4708 } 4709 } 4710 4711 /* insert right padding */ 4712 if (justify_left) 4713 { 4714 /* right blank padding to the field width */ 4715 int pn = (int)(min_field_width 4716 - (str_arg_l + number_of_zeros_to_pad)); 4717 4718 if (pn > 0) 4719 { 4720 if (str_l < str_m) 4721 { 4722 size_t avail = str_m - str_l; 4723 4724 vim_memset(str + str_l, ' ', 4725 (size_t)pn > avail ? avail 4726 : (size_t)pn); 4727 } 4728 str_l += pn; 4729 } 4730 } 4731 } 4732 } 4733 4734 if (str_m > 0) 4735 { 4736 /* make sure the string is nul-terminated even at the expense of 4737 * overwriting the last character (shouldn't happen, but just in case) 4738 * */ 4739 str[str_l <= str_m - 1 ? str_l : str_m - 1] = '\0'; 4740 } 4741 4742 if (tvs != NULL && tvs[arg_idx - 1].v_type != VAR_UNKNOWN) 4743 EMSG(_("E767: Too many arguments to printf()")); 4744 4745 /* Return the number of characters formatted (excluding trailing nul 4746 * character), that is, the number of characters that would have been 4747 * written to the buffer if it were large enough. */ 4748 return (int)str_l; 4749 } 4750 4751 #endif /* PROTO */ 4752