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 __ARGS((void)); 19 static char_u *get_emsg_source __ARGS((void)); 20 static char_u *get_emsg_lnum __ARGS((void)); 21 static void add_msg_hist __ARGS((char_u *s, int len, int attr)); 22 static void hit_return_msg __ARGS((void)); 23 static void msg_home_replace_attr __ARGS((char_u *fname, int attr)); 24 #ifdef FEAT_MBYTE 25 static char_u *screen_puts_mbyte __ARGS((char_u *s, int l, int attr)); 26 #endif 27 static void msg_puts_attr_len __ARGS((char_u *str, int maxlen, int attr)); 28 static void msg_puts_display __ARGS((char_u *str, int maxlen, int attr, int recurse)); 29 static void msg_scroll_up __ARGS((void)); 30 static void inc_msg_scrolled __ARGS((void)); 31 static void store_sb_text __ARGS((char_u **sb_str, char_u *s, int attr, int *sb_col, int finish)); 32 static void t_puts __ARGS((int *t_col, char_u *t_s, char_u *s, int attr)); 33 static void msg_puts_printf __ARGS((char_u *str, int maxlen)); 34 static int do_more_prompt __ARGS((int typed_char)); 35 static void msg_screen_putchar __ARGS((int c, int attr)); 36 static int msg_check_screen __ARGS((void)); 37 static void redir_write __ARGS((char_u *s, int maxlen)); 38 static void verbose_write __ARGS((char_u *s, int maxlen)); 39 #ifdef FEAT_CON_DIALOG 40 static char_u *msg_show_console_dialog __ARGS((char_u *message, char_u *buttons, int dfltbutton)); 41 static int confirm_msg_used = FALSE; /* displaying confirm_msg */ 42 static char_u *confirm_msg = NULL; /* ":confirm" message */ 43 static char_u *confirm_msg_tail; /* tail of confirm_msg */ 44 #endif 45 46 struct msg_hist 47 { 48 struct msg_hist *next; 49 char_u *msg; 50 int attr; 51 }; 52 53 static struct msg_hist *first_msg_hist = NULL; 54 static struct msg_hist *last_msg_hist = NULL; 55 static int msg_hist_len = 0; 56 static int msg_hist_off = FALSE; /* don't add messages to history */ 57 58 /* 59 * When writing messages to the screen, there are many different situations. 60 * A number of variables is used to remember the current state: 61 * msg_didany TRUE when messages were written since the last time the 62 * user reacted to a prompt. 63 * Reset: After hitting a key for the hit-return prompt, 64 * hitting <CR> for the command line or input(). 65 * Set: When any message is written to the screen. 66 * msg_didout TRUE when something was written to the current line. 67 * Reset: When advancing to the next line, when the current 68 * text can be overwritten. 69 * Set: When any message is written to the screen. 70 * msg_nowait No extra delay for the last drawn message. 71 * Used in normal_cmd() before the mode message is drawn. 72 * emsg_on_display There was an error message recently. Indicates that there 73 * should be a delay before redrawing. 74 * msg_scroll The next message should not overwrite the current one. 75 * msg_scrolled How many lines the screen has been scrolled (because of 76 * messages). Used in update_screen() to scroll the screen 77 * back. Incremented each time the screen scrolls a line. 78 * msg_scrolled_ign TRUE when msg_scrolled is non-zero and msg_puts_attr() 79 * writes something without scrolling should not make 80 * need_wait_return to be set. This is a hack to make ":ts" 81 * work without an extra prompt. 82 * lines_left Number of lines available for messages before the 83 * more-prompt is to be given. 84 * need_wait_return TRUE when the hit-return prompt is needed. 85 * Reset: After giving the hit-return prompt, when the user 86 * has answered some other prompt. 87 * Set: When the ruler or typeahead display is overwritten, 88 * scrolling the screen for some message. 89 * keep_msg Message to be displayed after redrawing the screen, in 90 * main_loop(). 91 * This is an allocated string or NULL when not used. 92 */ 93 94 /* 95 * msg(s) - displays the string 's' on the status line 96 * When terminal not initialized (yet) mch_errmsg(..) is used. 97 * return TRUE if wait_return not called 98 */ 99 int 100 msg(s) 101 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(PROTO) 108 /* 109 * Like msg() but keep it silent when 'verbosefile' is set. 110 */ 111 int 112 verb_msg(s) 113 char_u *s; 114 { 115 int n; 116 117 verbose_enter(); 118 n = msg_attr_keep(s, 0, FALSE); 119 verbose_leave(); 120 121 return n; 122 } 123 #endif 124 125 int 126 msg_attr(s, attr) 127 char_u *s; 128 int attr; 129 { 130 return msg_attr_keep(s, attr, FALSE); 131 } 132 133 int 134 msg_attr_keep(s, attr, keep) 135 char_u *s; 136 int attr; 137 int keep; /* TRUE: set keep_msg if it doesn't scroll */ 138 { 139 static int entered = 0; 140 int retval; 141 char_u *buf = NULL; 142 143 #ifdef FEAT_EVAL 144 if (attr == 0) 145 set_vim_var_string(VV_STATUSMSG, s, -1); 146 #endif 147 148 /* 149 * It is possible that displaying a messages causes a problem (e.g., 150 * when redrawing the window), which causes another message, etc.. To 151 * break this loop, limit the recursiveness to 3 levels. 152 */ 153 if (entered >= 3) 154 return TRUE; 155 ++entered; 156 157 /* Add message to history (unless it's a repeated kept message or a 158 * truncated message) */ 159 if (s != keep_msg 160 || (*s != '<' 161 && last_msg_hist != NULL 162 && last_msg_hist->msg != NULL 163 && STRCMP(s, last_msg_hist->msg))) 164 add_msg_hist(s, -1, attr); 165 166 /* When displaying keep_msg, don't let msg_start() free it, caller must do 167 * that. */ 168 if (s == keep_msg) 169 keep_msg = NULL; 170 171 /* Truncate the message if needed. */ 172 msg_start(); 173 buf = msg_strtrunc(s, FALSE); 174 if (buf != NULL) 175 s = buf; 176 177 msg_outtrans_attr(s, attr); 178 msg_clr_eos(); 179 retval = msg_end(); 180 181 if (keep && retval && vim_strsize(s) < (int)(Rows - cmdline_row - 1) 182 * Columns + sc_col) 183 { 184 set_keep_msg(s); 185 keep_msg_attr = 0; 186 } 187 188 vim_free(buf); 189 --entered; 190 return retval; 191 } 192 193 /* 194 * Truncate a string such that it can be printed without causing a scroll. 195 * Returns an allocated string or NULL when no truncating is done. 196 */ 197 char_u * 198 msg_strtrunc(s, force) 199 char_u *s; 200 int force; /* always truncate */ 201 { 202 char_u *buf = NULL; 203 int len; 204 int room; 205 206 /* May truncate message to avoid a hit-return prompt */ 207 if ((!msg_scroll && !need_wait_return && shortmess(SHM_TRUNCALL) 208 && !exmode_active && msg_silent == 0) || force) 209 { 210 len = vim_strsize(s); 211 if (msg_scrolled != 0) 212 /* Use all the columns. */ 213 room = (int)(Rows - msg_row) * Columns - 1; 214 else 215 /* Use up to 'showcmd' column. */ 216 room = (int)(Rows - msg_row - 1) * Columns + sc_col - 1; 217 if (len > room && room > 0) 218 { 219 #ifdef FEAT_MBYTE 220 if (enc_utf8) 221 /* may have up to 18 bytes per cell (6 per char, up to two 222 * composing chars) */ 223 buf = alloc((room + 2) * 18); 224 else if (enc_dbcs == DBCS_JPNU) 225 /* may have up to 2 bytes per cell for euc-jp */ 226 buf = alloc((room + 2) * 2); 227 else 228 #endif 229 buf = alloc(room + 2); 230 if (buf != NULL) 231 trunc_string(s, buf, room); 232 } 233 } 234 return buf; 235 } 236 237 /* 238 * Truncate a string "s" to "buf" with cell width "room". 239 * "s" and "buf" may be equal. 240 */ 241 void 242 trunc_string(s, buf, room) 243 char_u *s; 244 char_u *buf; 245 int room; 246 { 247 int half; 248 int len; 249 int e; 250 int i; 251 int n; 252 253 room -= 3; 254 half = room / 2; 255 len = 0; 256 257 /* First part: Start of the string. */ 258 for (e = 0; len < half; ++e) 259 { 260 if (s[e] == NUL) 261 { 262 /* text fits without truncating! */ 263 buf[e] = NUL; 264 return; 265 } 266 n = ptr2cells(s + e); 267 if (len + n >= half) 268 break; 269 len += n; 270 buf[e] = s[e]; 271 #ifdef FEAT_MBYTE 272 if (has_mbyte) 273 for (n = (*mb_ptr2len)(s + e); --n > 0; ) 274 { 275 ++e; 276 buf[e] = s[e]; 277 } 278 #endif 279 } 280 281 /* Last part: End of the string. */ 282 i = e; 283 #ifdef FEAT_MBYTE 284 if (enc_dbcs != 0) 285 { 286 /* For DBCS going backwards in a string is slow, but 287 * computing the cell width isn't too slow: go forward 288 * until the rest fits. */ 289 n = vim_strsize(s + i); 290 while (len + n > room) 291 { 292 n -= ptr2cells(s + i); 293 i += (*mb_ptr2len)(s + i); 294 } 295 } 296 else if (enc_utf8) 297 { 298 /* For UTF-8 we can go backwards easily. */ 299 i = (int)STRLEN(s); 300 for (;;) 301 { 302 half = i - (*mb_head_off)(s, s + i - 1) - 1; 303 n = ptr2cells(s + half); 304 if (len + n > room) 305 break; 306 len += n; 307 i = half; 308 } 309 } 310 else 311 #endif 312 { 313 for (i = (int)STRLEN(s); len + (n = ptr2cells(s + i - 1)) <= room; --i) 314 len += n; 315 } 316 317 /* Set the middle and copy the last part. */ 318 mch_memmove(buf + e, "...", (size_t)3); 319 mch_memmove(buf + e + 3, s + i, STRLEN(s + i) + 1); 320 } 321 322 /* 323 * Automatic prototype generation does not understand this function. 324 * Note: Caller of smgs() and smsg_attr() must check the resulting string is 325 * shorter than IOSIZE!!! 326 */ 327 #ifndef PROTO 328 # ifndef HAVE_STDARG_H 329 330 int 331 #ifdef __BORLANDC__ 332 _RTLENTRYF 333 #endif 334 smsg __ARGS((char_u *, long, long, long, 335 long, long, long, long, long, long, long)); 336 int 337 #ifdef __BORLANDC__ 338 _RTLENTRYF 339 #endif 340 smsg_attr __ARGS((int, char_u *, long, long, long, 341 long, long, long, long, long, long, long)); 342 343 int vim_snprintf __ARGS((char *, size_t, char *, long, long, long, 344 long, long, long, long, long, long, long)); 345 346 /* 347 * smsg(str, arg, ...) is like using sprintf(buf, str, arg, ...) and then 348 * calling msg(buf). 349 * The buffer used is IObuff, the message is truncated at IOSIZE. 350 */ 351 352 /* VARARGS */ 353 int 354 #ifdef __BORLANDC__ 355 _RTLENTRYF 356 #endif 357 smsg(s, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) 358 char_u *s; 359 long a1, a2, a3, a4, a5, a6, a7, a8, a9, a10; 360 { 361 return smsg_attr(0, s, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10); 362 } 363 364 /* VARARGS */ 365 int 366 #ifdef __BORLANDC__ 367 _RTLENTRYF 368 #endif 369 smsg_attr(attr, s, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) 370 int attr; 371 char_u *s; 372 long a1, a2, a3, a4, a5, a6, a7, a8, a9, a10; 373 { 374 vim_snprintf((char *)IObuff, IOSIZE, (char *)s, 375 a1, a2, a3, a4, a5, a6, a7, a8, a9, a10); 376 return msg_attr(IObuff, attr); 377 } 378 379 # else /* HAVE_STDARG_H */ 380 381 int vim_snprintf(char *str, size_t str_m, char *fmt, ...); 382 383 int 384 #ifdef __BORLANDC__ 385 _RTLENTRYF 386 #endif 387 smsg(char_u *s, ...) 388 { 389 va_list arglist; 390 391 va_start(arglist, s); 392 vim_vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist, NULL); 393 va_end(arglist); 394 return msg(IObuff); 395 } 396 397 int 398 #ifdef __BORLANDC__ 399 _RTLENTRYF 400 #endif 401 smsg_attr(int attr, char_u *s, ...) 402 { 403 va_list arglist; 404 405 va_start(arglist, s); 406 vim_vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist, NULL); 407 va_end(arglist); 408 return msg_attr(IObuff, attr); 409 } 410 411 # endif /* HAVE_STDARG_H */ 412 #endif 413 414 /* 415 * Remember the last sourcing name/lnum used in an error message, so that it 416 * isn't printed each time when it didn't change. 417 */ 418 static int last_sourcing_lnum = 0; 419 static char_u *last_sourcing_name = NULL; 420 421 /* 422 * Reset the last used sourcing name/lnum. Makes sure it is displayed again 423 * for the next error message; 424 */ 425 void 426 reset_last_sourcing() 427 { 428 vim_free(last_sourcing_name); 429 last_sourcing_name = NULL; 430 last_sourcing_lnum = 0; 431 } 432 433 /* 434 * Return TRUE if "sourcing_name" differs from "last_sourcing_name". 435 */ 436 static int 437 other_sourcing_name() 438 { 439 if (sourcing_name != NULL) 440 { 441 if (last_sourcing_name != NULL) 442 return STRCMP(sourcing_name, last_sourcing_name) != 0; 443 return TRUE; 444 } 445 return FALSE; 446 } 447 448 /* 449 * Get the message about the source, as used for an error message. 450 * Returns an allocated string with room for one more character. 451 * Returns NULL when no message is to be given. 452 */ 453 static char_u * 454 get_emsg_source() 455 { 456 char_u *Buf, *p; 457 458 if (sourcing_name != NULL && other_sourcing_name()) 459 { 460 p = (char_u *)_("Error detected while processing %s:"); 461 Buf = alloc((unsigned)(STRLEN(sourcing_name) + STRLEN(p))); 462 if (Buf != NULL) 463 sprintf((char *)Buf, (char *)p, sourcing_name); 464 return Buf; 465 } 466 return NULL; 467 } 468 469 /* 470 * Get the message about the source lnum, as used for an error message. 471 * Returns an allocated string with room for one more character. 472 * Returns NULL when no message is to be given. 473 */ 474 static char_u * 475 get_emsg_lnum() 476 { 477 char_u *Buf, *p; 478 479 /* lnum is 0 when executing a command from the command line 480 * argument, we don't want a line number then */ 481 if (sourcing_name != NULL 482 && (other_sourcing_name() || sourcing_lnum != last_sourcing_lnum) 483 && sourcing_lnum != 0) 484 { 485 p = (char_u *)_("line %4ld:"); 486 Buf = alloc((unsigned)(STRLEN(p) + 20)); 487 if (Buf != NULL) 488 sprintf((char *)Buf, (char *)p, (long)sourcing_lnum); 489 return Buf; 490 } 491 return NULL; 492 } 493 494 /* 495 * Display name and line number for the source of an error. 496 * Remember the file name and line number, so that for the next error the info 497 * is only displayed if it changed. 498 */ 499 void 500 msg_source(attr) 501 int attr; 502 { 503 char_u *p; 504 505 ++no_wait_return; 506 p = get_emsg_source(); 507 if (p != NULL) 508 { 509 msg_attr(p, attr); 510 vim_free(p); 511 } 512 p = get_emsg_lnum(); 513 if (p != NULL) 514 { 515 msg_attr(p, hl_attr(HLF_N)); 516 vim_free(p); 517 last_sourcing_lnum = sourcing_lnum; /* only once for each line */ 518 } 519 520 /* remember the last sourcing name printed, also when it's empty */ 521 if (sourcing_name == NULL || other_sourcing_name()) 522 { 523 vim_free(last_sourcing_name); 524 if (sourcing_name == NULL) 525 last_sourcing_name = NULL; 526 else 527 last_sourcing_name = vim_strsave(sourcing_name); 528 } 529 --no_wait_return; 530 } 531 532 /* 533 * emsg() - display an error message 534 * 535 * Rings the bell, if appropriate, and calls message() to do the real work 536 * When terminal not initialized (yet) mch_errmsg(..) is used. 537 * 538 * return TRUE if wait_return not called 539 */ 540 int 541 emsg(s) 542 char_u *s; 543 { 544 int attr; 545 char_u *p; 546 #ifdef FEAT_EVAL 547 int ignore = FALSE; 548 int severe; 549 #endif 550 551 called_emsg = TRUE; 552 ex_exitval = 1; 553 554 /* 555 * If "emsg_severe" is TRUE: When an error exception is to be thrown, 556 * prefer this message over previous messages for the same command. 557 */ 558 #ifdef FEAT_EVAL 559 severe = emsg_severe; 560 emsg_severe = FALSE; 561 #endif 562 563 /* 564 * If "emsg_off" is set: no error messages at the moment. 565 * If 'debug' is set: do error message anyway, but without side effects. 566 * If "emsg_skip" is set: never do error messages. 567 */ 568 if ((emsg_off > 0 && vim_strchr(p_debug, 'm') == NULL) 569 #ifdef FEAT_EVAL 570 || emsg_skip > 0 571 #endif 572 ) 573 return TRUE; 574 575 if (!emsg_off) 576 { 577 #ifdef FEAT_EVAL 578 /* 579 * Cause a throw of an error exception if appropriate. Don't display 580 * the error message in this case. (If no matching catch clause will 581 * be found, the message will be displayed later on.) "ignore" is set 582 * when the message should be ignored completely (used for the 583 * interrupt message). 584 */ 585 if (cause_errthrow(s, severe, &ignore) == TRUE) 586 { 587 if (!ignore) 588 did_emsg = TRUE; 589 return TRUE; 590 } 591 592 /* set "v:errmsg", also when using ":silent! cmd" */ 593 set_vim_var_string(VV_ERRMSG, s, -1); 594 #endif 595 596 /* 597 * When using ":silent! cmd" ignore error messsages. 598 * But do write it to the redirection file. 599 */ 600 if (emsg_silent != 0) 601 { 602 msg_start(); 603 p = get_emsg_source(); 604 if (p != NULL) 605 { 606 STRCAT(p, "\n"); 607 redir_write(p, -1); 608 vim_free(p); 609 } 610 p = get_emsg_lnum(); 611 if (p != NULL) 612 { 613 STRCAT(p, "\n"); 614 redir_write(p, -1); 615 vim_free(p); 616 } 617 redir_write(s, -1); 618 return TRUE; 619 } 620 621 /* Reset msg_silent, an error causes messages to be switched back on. */ 622 msg_silent = 0; 623 cmd_silent = FALSE; 624 625 if (global_busy) /* break :global command */ 626 ++global_busy; 627 628 if (p_eb) 629 beep_flush(); /* also includes flush_buffers() */ 630 else 631 flush_buffers(FALSE); /* flush internal buffers */ 632 did_emsg = TRUE; /* flag for DoOneCmd() */ 633 } 634 635 emsg_on_display = TRUE; /* remember there is an error message */ 636 ++msg_scroll; /* don't overwrite a previous message */ 637 attr = hl_attr(HLF_E); /* set highlight mode for error messages */ 638 if (msg_scrolled != 0) 639 need_wait_return = TRUE; /* needed in case emsg() is called after 640 * wait_return has reset need_wait_return 641 * and a redraw is expected because 642 * msg_scrolled is non-zero */ 643 644 /* 645 * Display name and line number for the source of the error. 646 */ 647 msg_source(attr); 648 649 /* 650 * Display the error message itself. 651 */ 652 msg_nowait = FALSE; /* wait for this msg */ 653 return msg_attr(s, attr); 654 } 655 656 /* 657 * Print an error message with one "%s" and one string argument. 658 */ 659 int 660 emsg2(s, a1) 661 char_u *s, *a1; 662 { 663 return emsg3(s, a1, NULL); 664 } 665 666 /* emsg3() and emsgn() are in misc2.c to avoid warnings for the prototypes. */ 667 668 void 669 emsg_invreg(name) 670 int name; 671 { 672 EMSG2(_("E354: Invalid register name: '%s'"), transchar(name)); 673 } 674 675 /* 676 * Like msg(), but truncate to a single line if p_shm contains 't', or when 677 * "force" is TRUE. This truncates in another way as for normal messages. 678 * Careful: The string may be changed by msg_may_trunc()! 679 * Returns a pointer to the printed message, if wait_return() not called. 680 */ 681 char_u * 682 msg_trunc_attr(s, force, attr) 683 char_u *s; 684 int force; 685 int attr; 686 { 687 int n; 688 689 /* Add message to history before truncating */ 690 add_msg_hist(s, -1, attr); 691 692 s = msg_may_trunc(force, s); 693 694 msg_hist_off = TRUE; 695 n = msg_attr(s, attr); 696 msg_hist_off = FALSE; 697 698 if (n) 699 return s; 700 return NULL; 701 } 702 703 /* 704 * Check if message "s" should be truncated at the start (for filenames). 705 * Return a pointer to where the truncated message starts. 706 * Note: May change the message by replacing a character with '<'. 707 */ 708 char_u * 709 msg_may_trunc(force, s) 710 int force; 711 char_u *s; 712 { 713 int n; 714 int room; 715 716 room = (int)(Rows - cmdline_row - 1) * Columns + sc_col - 1; 717 if ((force || (shortmess(SHM_TRUNC) && !exmode_active)) 718 && (n = (int)STRLEN(s) - room) > 0) 719 { 720 #ifdef FEAT_MBYTE 721 if (has_mbyte) 722 { 723 int size = vim_strsize(s); 724 725 /* There may be room anyway when there are multibyte chars. */ 726 if (size <= room) 727 return s; 728 729 for (n = 0; size >= room; ) 730 { 731 size -= (*mb_ptr2cells)(s + n); 732 n += (*mb_ptr2len)(s + n); 733 } 734 --n; 735 } 736 #endif 737 s += n; 738 *s = '<'; 739 } 740 return s; 741 } 742 743 static void 744 add_msg_hist(s, len, attr) 745 char_u *s; 746 int len; /* -1 for undetermined length */ 747 int attr; 748 { 749 struct msg_hist *p; 750 751 if (msg_hist_off || msg_silent != 0) 752 return; 753 754 /* Don't let the message history get too big */ 755 while (msg_hist_len > 20) 756 (void)delete_first_msg(); 757 758 /* allocate an entry and add the message at the end of the history */ 759 p = (struct msg_hist *)alloc((int)sizeof(struct msg_hist)); 760 if (p != NULL) 761 { 762 if (len < 0) 763 len = (int)STRLEN(s); 764 /* remove leading and trailing newlines */ 765 while (len > 0 && *s == '\n') 766 { 767 ++s; 768 --len; 769 } 770 while (len > 0 && s[len - 1] == '\n') 771 --len; 772 p->msg = vim_strnsave(s, len); 773 p->next = NULL; 774 p->attr = attr; 775 if (last_msg_hist != NULL) 776 last_msg_hist->next = p; 777 last_msg_hist = p; 778 if (first_msg_hist == NULL) 779 first_msg_hist = last_msg_hist; 780 ++msg_hist_len; 781 } 782 } 783 784 /* 785 * Delete the first (oldest) message from the history. 786 * Returns FAIL if there are no messages. 787 */ 788 int 789 delete_first_msg() 790 { 791 struct msg_hist *p; 792 793 if (msg_hist_len <= 0) 794 return FAIL; 795 p = first_msg_hist; 796 first_msg_hist = p->next; 797 vim_free(p->msg); 798 vim_free(p); 799 --msg_hist_len; 800 return OK; 801 } 802 803 /* 804 * ":messages" command. 805 */ 806 /*ARGSUSED*/ 807 void 808 ex_messages(eap) 809 exarg_T *eap; 810 { 811 struct msg_hist *p; 812 char_u *s; 813 814 msg_hist_off = TRUE; 815 816 s = mch_getenv((char_u *)"LANG"); 817 if (s != NULL && *s != NUL) 818 msg_attr((char_u *) 819 _("Messages maintainer: Bram Moolenaar <[email protected]>"), 820 hl_attr(HLF_T)); 821 822 for (p = first_msg_hist; p != NULL; p = p->next) 823 if (p->msg != NULL) 824 msg_attr(p->msg, p->attr); 825 826 msg_hist_off = FALSE; 827 } 828 829 #if defined(FEAT_CON_DIALOG) || defined(FIND_REPLACE_DIALOG) || defined(PROTO) 830 /* 831 * Call this after prompting the user. This will avoid a hit-return message 832 * and a delay. 833 */ 834 void 835 msg_end_prompt() 836 { 837 need_wait_return = FALSE; 838 emsg_on_display = FALSE; 839 cmdline_row = msg_row; 840 msg_col = 0; 841 msg_clr_eos(); 842 } 843 #endif 844 845 /* 846 * wait for the user to hit a key (normally a return) 847 * if 'redraw' is TRUE, clear and redraw the screen 848 * if 'redraw' is FALSE, just redraw the screen 849 * if 'redraw' is -1, don't redraw at all 850 */ 851 void 852 wait_return(redraw) 853 int redraw; 854 { 855 int c; 856 int oldState; 857 int tmpState; 858 int had_got_int; 859 860 if (redraw == TRUE) 861 must_redraw = CLEAR; 862 863 /* If using ":silent cmd", don't wait for a return. Also don't set 864 * need_wait_return to do it later. */ 865 if (msg_silent != 0) 866 return; 867 868 /* 869 * With the global command (and some others) we only need one return at the 870 * end. Adjust cmdline_row to avoid the next message overwriting the last one. 871 * When inside vgetc(), we can't wait for a typed character at all. 872 */ 873 if (vgetc_busy) 874 return; 875 if (no_wait_return) 876 { 877 need_wait_return = TRUE; 878 if (!exmode_active) 879 cmdline_row = msg_row; 880 return; 881 } 882 883 redir_off = TRUE; /* don't redirect this message */ 884 oldState = State; 885 if (quit_more) 886 { 887 c = CAR; /* just pretend CR was hit */ 888 quit_more = FALSE; 889 got_int = FALSE; 890 } 891 else if (exmode_active) 892 { 893 MSG_PUTS(" "); /* make sure the cursor is on the right line */ 894 c = CAR; /* no need for a return in ex mode */ 895 got_int = FALSE; 896 } 897 else 898 { 899 /* Make sure the hit-return prompt is on screen when 'guioptions' was 900 * just changed. */ 901 screenalloc(FALSE); 902 903 State = HITRETURN; 904 #ifdef FEAT_MOUSE 905 setmouse(); 906 #endif 907 #ifdef USE_ON_FLY_SCROLL 908 dont_scroll = TRUE; /* disallow scrolling here */ 909 #endif 910 hit_return_msg(); 911 912 do 913 { 914 /* Remember "got_int", if it is set vgetc() probably returns a 915 * CTRL-C, but we need to loop then. */ 916 had_got_int = got_int; 917 918 /* Don't do mappings here, we put the character back in the 919 * typeahead buffer. */ 920 ++no_mapping; 921 ++allow_keys; 922 c = safe_vgetc(); 923 if (had_got_int && !global_busy) 924 got_int = FALSE; 925 --no_mapping; 926 --allow_keys; 927 928 #ifdef FEAT_CLIPBOARD 929 /* Strange way to allow copying (yanking) a modeless selection at 930 * the hit-enter prompt. Use CTRL-Y, because the same is used in 931 * Cmdline-mode and it's harmless when there is no selection. */ 932 if (c == Ctrl_Y && clip_star.state == SELECT_DONE) 933 { 934 clip_copy_modeless_selection(TRUE); 935 c = K_IGNORE; 936 } 937 #endif 938 if (p_more && !p_cp && (c == 'b' || c == 'k' || c == 'u' 939 || c == 'g' || c == K_UP)) 940 { 941 /* scroll back to show older messages */ 942 do_more_prompt(c); 943 if (quit_more) 944 { 945 c = CAR; /* just pretend CR was hit */ 946 quit_more = FALSE; 947 got_int = FALSE; 948 } 949 else 950 { 951 c = K_IGNORE; 952 hit_return_msg(); 953 } 954 } 955 } while ((had_got_int && c == Ctrl_C) 956 || c == K_IGNORE 957 #ifdef FEAT_GUI 958 || c == K_VER_SCROLLBAR || c == K_HOR_SCROLLBAR 959 #endif 960 #ifdef FEAT_MOUSE 961 || c == K_LEFTDRAG || c == K_LEFTRELEASE 962 || c == K_MIDDLEDRAG || c == K_MIDDLERELEASE 963 || c == K_RIGHTDRAG || c == K_RIGHTRELEASE 964 || c == K_MOUSEDOWN || c == K_MOUSEUP 965 || (!mouse_has(MOUSE_RETURN) 966 && mouse_row < msg_row 967 && (c == K_LEFTMOUSE 968 || c == K_MIDDLEMOUSE 969 || c == K_RIGHTMOUSE 970 || c == K_X1MOUSE 971 || c == K_X2MOUSE)) 972 #endif 973 ); 974 ui_breakcheck(); 975 #ifdef FEAT_MOUSE 976 /* 977 * Avoid that the mouse-up event causes visual mode to start. 978 */ 979 if (c == K_LEFTMOUSE || c == K_MIDDLEMOUSE || c == K_RIGHTMOUSE 980 || c == K_X1MOUSE || c == K_X2MOUSE) 981 (void)jump_to_mouse(MOUSE_SETPOS, NULL, 0); 982 else 983 #endif 984 if (vim_strchr((char_u *)"\r\n ", c) == NULL && c != Ctrl_C) 985 { 986 char_u buf[2]; 987 988 /* Put the character back in the typeahead buffer. Don't use the 989 * stuff buffer, because lmaps wouldn't work. */ 990 buf[0] = c; 991 buf[1] = NUL; 992 ins_typebuf(buf, REMAP_YES, 0, !KeyTyped, FALSE); 993 do_redraw = TRUE; /* need a redraw even though there is 994 typeahead */ 995 } 996 } 997 redir_off = FALSE; 998 999 /* 1000 * If the user hits ':', '?' or '/' we get a command line from the next 1001 * line. 1002 */ 1003 if (c == ':' || c == '?' || c == '/') 1004 { 1005 if (!exmode_active) 1006 cmdline_row = msg_row; 1007 skip_redraw = TRUE; /* skip redraw once */ 1008 do_redraw = FALSE; 1009 } 1010 1011 /* 1012 * If the window size changed set_shellsize() will redraw the screen. 1013 * Otherwise the screen is only redrawn if 'redraw' is set and no ':' 1014 * typed. 1015 */ 1016 tmpState = State; 1017 State = oldState; /* restore State before set_shellsize */ 1018 #ifdef FEAT_MOUSE 1019 setmouse(); 1020 #endif 1021 msg_check(); 1022 1023 #if defined(UNIX) || defined(VMS) 1024 /* 1025 * When switching screens, we need to output an extra newline on exit. 1026 */ 1027 if (swapping_screen() && !termcap_active) 1028 newline_on_exit = TRUE; 1029 #endif 1030 1031 need_wait_return = FALSE; 1032 did_wait_return = TRUE; 1033 emsg_on_display = FALSE; /* can delete error message now */ 1034 lines_left = -1; /* reset lines_left at next msg_start() */ 1035 reset_last_sourcing(); 1036 if (keep_msg != NULL && vim_strsize(keep_msg) >= 1037 (Rows - cmdline_row - 1) * Columns + sc_col) 1038 { 1039 vim_free(keep_msg); 1040 keep_msg = NULL; /* don't redisplay message, it's too long */ 1041 } 1042 1043 if (tmpState == SETWSIZE) /* got resize event while in vgetc() */ 1044 { 1045 starttermcap(); /* start termcap before redrawing */ 1046 shell_resized(); 1047 } 1048 else if (!skip_redraw 1049 && (redraw == TRUE || (msg_scrolled != 0 && redraw != -1))) 1050 { 1051 starttermcap(); /* start termcap before redrawing */ 1052 redraw_later(VALID); 1053 } 1054 } 1055 1056 /* 1057 * Write the hit-return prompt. 1058 */ 1059 static void 1060 hit_return_msg() 1061 { 1062 int save_p_more = p_more; 1063 1064 p_more = FALSE; /* don't want see this message when scrolling back */ 1065 if (msg_didout) /* start on a new line */ 1066 msg_putchar('\n'); 1067 if (got_int) 1068 MSG_PUTS(_("Interrupt: ")); 1069 1070 MSG_PUTS_ATTR(_("Press ENTER or type command to continue"), hl_attr(HLF_R)); 1071 if (!msg_use_printf()) 1072 msg_clr_eos(); 1073 p_more = save_p_more; 1074 } 1075 1076 /* 1077 * Set "keep_msg" to "s". Free the old value and check for NULL pointer. 1078 */ 1079 void 1080 set_keep_msg(s) 1081 char_u *s; 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 } 1090 1091 /* 1092 * Prepare for outputting characters in the command line. 1093 */ 1094 void 1095 msg_start() 1096 { 1097 int did_return = FALSE; 1098 1099 vim_free(keep_msg); 1100 keep_msg = NULL; /* don't display old message now */ 1101 if (!msg_scroll && full_screen) /* overwrite last message */ 1102 { 1103 msg_row = cmdline_row; 1104 msg_col = 1105 #ifdef FEAT_RIGHTLEFT 1106 cmdmsg_rl ? Columns - 1 : 1107 #endif 1108 0; 1109 } 1110 else if (msg_didout) /* start message on next line */ 1111 { 1112 msg_putchar('\n'); 1113 did_return = TRUE; 1114 if (exmode_active != EXMODE_NORMAL) 1115 cmdline_row = msg_row; 1116 } 1117 if (!msg_didany || lines_left < 0) 1118 msg_starthere(); 1119 if (msg_silent == 0) 1120 { 1121 msg_didout = FALSE; /* no output on current line yet */ 1122 cursor_off(); 1123 } 1124 1125 /* when redirecting, may need to start a new line. */ 1126 if (!did_return) 1127 redir_write((char_u *)"\n", -1); 1128 } 1129 1130 /* 1131 * Note that the current msg position is where messages start. 1132 */ 1133 void 1134 msg_starthere() 1135 { 1136 lines_left = cmdline_row; 1137 msg_didany = FALSE; 1138 } 1139 1140 void 1141 msg_putchar(c) 1142 int c; 1143 { 1144 msg_putchar_attr(c, 0); 1145 } 1146 1147 void 1148 msg_putchar_attr(c, attr) 1149 int c; 1150 int attr; 1151 { 1152 #ifdef FEAT_MBYTE 1153 char_u buf[MB_MAXBYTES + 1]; 1154 #else 1155 char_u buf[4]; 1156 #endif 1157 1158 if (IS_SPECIAL(c)) 1159 { 1160 buf[0] = K_SPECIAL; 1161 buf[1] = K_SECOND(c); 1162 buf[2] = K_THIRD(c); 1163 buf[3] = NUL; 1164 } 1165 else 1166 { 1167 #ifdef FEAT_MBYTE 1168 buf[(*mb_char2bytes)(c, buf)] = NUL; 1169 #else 1170 buf[0] = c; 1171 buf[1] = NUL; 1172 #endif 1173 } 1174 msg_puts_attr(buf, attr); 1175 } 1176 1177 void 1178 msg_outnum(n) 1179 long n; 1180 { 1181 char_u buf[20]; 1182 1183 sprintf((char *)buf, "%ld", n); 1184 msg_puts(buf); 1185 } 1186 1187 void 1188 msg_home_replace(fname) 1189 char_u *fname; 1190 { 1191 msg_home_replace_attr(fname, 0); 1192 } 1193 1194 #if defined(FEAT_FIND_ID) || defined(PROTO) 1195 void 1196 msg_home_replace_hl(fname) 1197 char_u *fname; 1198 { 1199 msg_home_replace_attr(fname, hl_attr(HLF_D)); 1200 } 1201 #endif 1202 1203 static void 1204 msg_home_replace_attr(fname, attr) 1205 char_u *fname; 1206 int attr; 1207 { 1208 char_u *name; 1209 1210 name = home_replace_save(NULL, fname); 1211 if (name != NULL) 1212 msg_outtrans_attr(name, attr); 1213 vim_free(name); 1214 } 1215 1216 /* 1217 * Output 'len' characters in 'str' (including NULs) with translation 1218 * if 'len' is -1, output upto a NUL character. 1219 * Use attributes 'attr'. 1220 * Return the number of characters it takes on the screen. 1221 */ 1222 int 1223 msg_outtrans(str) 1224 char_u *str; 1225 { 1226 return msg_outtrans_attr(str, 0); 1227 } 1228 1229 int 1230 msg_outtrans_attr(str, attr) 1231 char_u *str; 1232 int attr; 1233 { 1234 return msg_outtrans_len_attr(str, (int)STRLEN(str), attr); 1235 } 1236 1237 int 1238 msg_outtrans_len(str, len) 1239 char_u *str; 1240 int len; 1241 { 1242 return msg_outtrans_len_attr(str, len, 0); 1243 } 1244 1245 /* 1246 * Output one character at "p". Return pointer to the next character. 1247 * Handles multi-byte characters. 1248 */ 1249 char_u * 1250 msg_outtrans_one(p, attr) 1251 char_u *p; 1252 int attr; 1253 { 1254 #ifdef FEAT_MBYTE 1255 int l; 1256 1257 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) 1258 { 1259 msg_outtrans_len_attr(p, l, attr); 1260 return p + l; 1261 } 1262 #endif 1263 msg_puts_attr(transchar_byte(*p), attr); 1264 return p + 1; 1265 } 1266 1267 int 1268 msg_outtrans_len_attr(msgstr, len, attr) 1269 char_u *msgstr; 1270 int len; 1271 int attr; 1272 { 1273 int retval = 0; 1274 char_u *str = msgstr; 1275 char_u *plain_start = msgstr; 1276 char_u *s; 1277 #ifdef FEAT_MBYTE 1278 int mb_l; 1279 int c; 1280 #endif 1281 1282 /* if MSG_HIST flag set, add message to history */ 1283 if (attr & MSG_HIST) 1284 { 1285 add_msg_hist(str, len, attr); 1286 attr &= ~MSG_HIST; 1287 } 1288 1289 #ifdef FEAT_MBYTE 1290 /* If the string starts with a composing character first draw a space on 1291 * which the composing char can be drawn. */ 1292 if (enc_utf8 && utf_iscomposing(utf_ptr2char(msgstr))) 1293 msg_puts_attr((char_u *)" ", attr); 1294 #endif 1295 1296 /* 1297 * Go over the string. Special characters are translated and printed. 1298 * Normal characters are printed several at a time. 1299 */ 1300 while (--len >= 0) 1301 { 1302 #ifdef FEAT_MBYTE 1303 if (enc_utf8) 1304 /* Don't include composing chars after the end. */ 1305 mb_l = utfc_ptr2len_len(str, len + 1); 1306 else if (has_mbyte) 1307 mb_l = (*mb_ptr2len)(str); 1308 else 1309 mb_l = 1; 1310 if (has_mbyte && mb_l > 1) 1311 { 1312 c = (*mb_ptr2char)(str); 1313 if (vim_isprintc(c)) 1314 /* printable multi-byte char: count the cells. */ 1315 retval += (*mb_ptr2cells)(str); 1316 else 1317 { 1318 /* unprintable multi-byte char: print the printable chars so 1319 * far and the translation of the unprintable char. */ 1320 if (str > plain_start) 1321 msg_puts_attr_len(plain_start, (int)(str - plain_start), 1322 attr); 1323 plain_start = str + mb_l; 1324 msg_puts_attr(transchar(c), attr == 0 ? hl_attr(HLF_8) : attr); 1325 retval += char2cells(c); 1326 } 1327 len -= mb_l - 1; 1328 str += mb_l; 1329 } 1330 else 1331 #endif 1332 { 1333 s = transchar_byte(*str); 1334 if (s[1] != NUL) 1335 { 1336 /* unprintable char: print the printable chars so far and the 1337 * translation of the unprintable char. */ 1338 if (str > plain_start) 1339 msg_puts_attr_len(plain_start, (int)(str - plain_start), 1340 attr); 1341 plain_start = str + 1; 1342 msg_puts_attr(s, attr == 0 ? hl_attr(HLF_8) : attr); 1343 } 1344 retval += ptr2cells(str); 1345 ++str; 1346 } 1347 } 1348 1349 if (str > plain_start) 1350 /* print the printable chars at the end */ 1351 msg_puts_attr_len(plain_start, (int)(str - plain_start), attr); 1352 1353 return retval; 1354 } 1355 1356 #if defined(FEAT_QUICKFIX) || defined(PROTO) 1357 void 1358 msg_make(arg) 1359 char_u *arg; 1360 { 1361 int i; 1362 static char_u *str = (char_u *)"eeffoc", *rs = (char_u *)"Plon#dqg#vxjduB"; 1363 1364 arg = skipwhite(arg); 1365 for (i = 5; *arg && i >= 0; --i) 1366 if (*arg++ != str[i]) 1367 break; 1368 if (i < 0) 1369 { 1370 msg_putchar('\n'); 1371 for (i = 0; rs[i]; ++i) 1372 msg_putchar(rs[i] - 3); 1373 } 1374 } 1375 #endif 1376 1377 /* 1378 * Output the string 'str' upto a NUL character. 1379 * Return the number of characters it takes on the screen. 1380 * 1381 * If K_SPECIAL is encountered, then it is taken in conjunction with the 1382 * following character and shown as <F1>, <S-Up> etc. Any other character 1383 * which is not printable shown in <> form. 1384 * If 'from' is TRUE (lhs of a mapping), a space is shown as <Space>. 1385 * If a character is displayed in one of these special ways, is also 1386 * highlighted (its highlight name is '8' in the p_hl variable). 1387 * Otherwise characters are not highlighted. 1388 * This function is used to show mappings, where we want to see how to type 1389 * the character/string -- webb 1390 */ 1391 int 1392 msg_outtrans_special(strstart, from) 1393 char_u *strstart; 1394 int from; /* TRUE for lhs of a mapping */ 1395 { 1396 char_u *str = strstart; 1397 int retval = 0; 1398 char_u *string; 1399 int attr; 1400 int len; 1401 1402 attr = hl_attr(HLF_8); 1403 while (*str != NUL) 1404 { 1405 /* Leading and trailing spaces need to be displayed in <> form. */ 1406 if ((str == strstart || str[1] == NUL) && *str == ' ') 1407 { 1408 string = (char_u *)"<Space>"; 1409 ++str; 1410 } 1411 else 1412 string = str2special(&str, from); 1413 len = vim_strsize(string); 1414 /* Highlight special keys */ 1415 msg_puts_attr(string, len > 1 1416 #ifdef FEAT_MBYTE 1417 && (*mb_ptr2len)(string) <= 1 1418 #endif 1419 ? attr : 0); 1420 retval += len; 1421 } 1422 return retval; 1423 } 1424 1425 /* 1426 * Return the printable string for the key codes at "*sp". 1427 * Used for translating the lhs or rhs of a mapping to printable chars. 1428 * Advances "sp" to the next code. 1429 */ 1430 char_u * 1431 str2special(sp, from) 1432 char_u **sp; 1433 int from; /* TRUE for lhs of mapping */ 1434 { 1435 int c; 1436 static char_u buf[7]; 1437 char_u *str = *sp; 1438 int modifiers = 0; 1439 int special = FALSE; 1440 1441 #ifdef FEAT_MBYTE 1442 if (has_mbyte) 1443 { 1444 char_u *p; 1445 1446 /* Try to un-escape a multi-byte character. Return the un-escaped 1447 * string if it is a multi-byte character. */ 1448 p = mb_unescape(sp); 1449 if (p != NULL) 1450 return p; 1451 } 1452 #endif 1453 1454 c = *str; 1455 if (c == K_SPECIAL && str[1] != NUL && str[2] != NUL) 1456 { 1457 if (str[1] == KS_MODIFIER) 1458 { 1459 modifiers = str[2]; 1460 str += 3; 1461 c = *str; 1462 } 1463 if (c == K_SPECIAL && str[1] != NUL && str[2] != NUL) 1464 { 1465 c = TO_SPECIAL(str[1], str[2]); 1466 str += 2; 1467 if (c == K_ZERO) /* display <Nul> as ^@ */ 1468 c = NUL; 1469 } 1470 if (IS_SPECIAL(c) || modifiers) /* special key */ 1471 special = TRUE; 1472 } 1473 *sp = str + 1; 1474 1475 #ifdef FEAT_MBYTE 1476 /* For multi-byte characters check for an illegal byte. */ 1477 if (has_mbyte && MB_BYTE2LEN(*str) > (*mb_ptr2len)(str)) 1478 { 1479 transchar_nonprint(buf, c); 1480 return buf; 1481 } 1482 #endif 1483 1484 /* Make unprintable characters in <> form, also <M-Space> and <Tab>. 1485 * Use <Space> only for lhs of a mapping. */ 1486 if (special || char2cells(c) > 1 || (from && c == ' ')) 1487 return get_special_key_name(c, modifiers); 1488 buf[0] = c; 1489 buf[1] = NUL; 1490 return buf; 1491 } 1492 1493 /* 1494 * Translate a key sequence into special key names. 1495 */ 1496 void 1497 str2specialbuf(sp, buf, len) 1498 char_u *sp; 1499 char_u *buf; 1500 int len; 1501 { 1502 char_u *s; 1503 1504 *buf = NUL; 1505 while (*sp) 1506 { 1507 s = str2special(&sp, FALSE); 1508 if ((int)(STRLEN(s) + STRLEN(buf)) < len) 1509 STRCAT(buf, s); 1510 } 1511 } 1512 1513 /* 1514 * print line for :print or :list command 1515 */ 1516 void 1517 msg_prt_line(s, list) 1518 char_u *s; 1519 int list; 1520 { 1521 int c; 1522 int col = 0; 1523 int n_extra = 0; 1524 int c_extra = 0; 1525 char_u *p_extra = NULL; /* init to make SASC shut up */ 1526 int n; 1527 int attr= 0; 1528 char_u *trail = NULL; 1529 #ifdef FEAT_MBYTE 1530 int l; 1531 char_u buf[MB_MAXBYTES + 1]; 1532 #endif 1533 1534 if (curwin->w_p_list) 1535 list = TRUE; 1536 1537 /* find start of trailing whitespace */ 1538 if (list && lcs_trail) 1539 { 1540 trail = s + STRLEN(s); 1541 while (trail > s && vim_iswhite(trail[-1])) 1542 --trail; 1543 } 1544 1545 /* output a space for an empty line, otherwise the line will be 1546 * overwritten */ 1547 if (*s == NUL && !(list && lcs_eol != NUL)) 1548 msg_putchar(' '); 1549 1550 while (!got_int) 1551 { 1552 if (n_extra) 1553 { 1554 --n_extra; 1555 if (c_extra) 1556 c = c_extra; 1557 else 1558 c = *p_extra++; 1559 } 1560 #ifdef FEAT_MBYTE 1561 else if (has_mbyte && (l = (*mb_ptr2len)(s)) > 1) 1562 { 1563 col += (*mb_ptr2cells)(s); 1564 mch_memmove(buf, s, (size_t)l); 1565 buf[l] = NUL; 1566 msg_puts_attr(buf, attr); 1567 s += l; 1568 continue; 1569 } 1570 #endif 1571 else 1572 { 1573 attr = 0; 1574 c = *s++; 1575 if (c == TAB && (!list || lcs_tab1)) 1576 { 1577 /* tab amount depends on current column */ 1578 n_extra = curbuf->b_p_ts - col % curbuf->b_p_ts - 1; 1579 if (!list) 1580 { 1581 c = ' '; 1582 c_extra = ' '; 1583 } 1584 else 1585 { 1586 c = lcs_tab1; 1587 c_extra = lcs_tab2; 1588 attr = hl_attr(HLF_8); 1589 } 1590 } 1591 else if (c == NUL && list && lcs_eol != NUL) 1592 { 1593 p_extra = (char_u *)""; 1594 c_extra = NUL; 1595 n_extra = 1; 1596 c = lcs_eol; 1597 attr = hl_attr(HLF_AT); 1598 --s; 1599 } 1600 else if (c != NUL && (n = byte2cells(c)) > 1) 1601 { 1602 n_extra = n - 1; 1603 p_extra = transchar_byte(c); 1604 c_extra = NUL; 1605 c = *p_extra++; 1606 } 1607 else if (c == ' ' && trail != NULL && s > trail) 1608 { 1609 c = lcs_trail; 1610 attr = hl_attr(HLF_8); 1611 } 1612 } 1613 1614 if (c == NUL) 1615 break; 1616 1617 msg_putchar_attr(c, attr); 1618 col++; 1619 } 1620 msg_clr_eos(); 1621 } 1622 1623 #ifdef FEAT_MBYTE 1624 /* 1625 * Use screen_puts() to output one multi-byte character. 1626 * Return the pointer "s" advanced to the next character. 1627 */ 1628 static char_u * 1629 screen_puts_mbyte(s, l, attr) 1630 char_u *s; 1631 int l; 1632 int attr; 1633 { 1634 int cw; 1635 1636 msg_didout = TRUE; /* remember that line is not empty */ 1637 cw = (*mb_ptr2cells)(s); 1638 if (cw > 1 && ( 1639 #ifdef FEAT_RIGHTLEFT 1640 cmdmsg_rl ? msg_col <= 1 : 1641 #endif 1642 msg_col == Columns - 1)) 1643 { 1644 /* Doesn't fit, print a highlighted '>' to fill it up. */ 1645 msg_screen_putchar('>', hl_attr(HLF_AT)); 1646 return s; 1647 } 1648 1649 screen_puts_len(s, l, msg_row, msg_col, attr); 1650 #ifdef FEAT_RIGHTLEFT 1651 if (cmdmsg_rl) 1652 { 1653 msg_col -= cw; 1654 if (msg_col == 0) 1655 { 1656 msg_col = Columns; 1657 ++msg_row; 1658 } 1659 } 1660 else 1661 #endif 1662 { 1663 msg_col += cw; 1664 if (msg_col >= Columns) 1665 { 1666 msg_col = 0; 1667 ++msg_row; 1668 } 1669 } 1670 return s + l; 1671 } 1672 #endif 1673 1674 /* 1675 * Output a string to the screen at position msg_row, msg_col. 1676 * Update msg_row and msg_col for the next message. 1677 */ 1678 void 1679 msg_puts(s) 1680 char_u *s; 1681 { 1682 msg_puts_attr(s, 0); 1683 } 1684 1685 void 1686 msg_puts_title(s) 1687 char_u *s; 1688 { 1689 msg_puts_attr(s, hl_attr(HLF_T)); 1690 } 1691 1692 /* 1693 * Show a message in such a way that it always fits in the line. Cut out a 1694 * part in the middle and replace it with "..." when necessary. 1695 * Does not handle multi-byte characters! 1696 */ 1697 void 1698 msg_puts_long_attr(longstr, attr) 1699 char_u *longstr; 1700 int attr; 1701 { 1702 msg_puts_long_len_attr(longstr, (int)strlen((char *)longstr), attr); 1703 } 1704 1705 void 1706 msg_puts_long_len_attr(longstr, len, attr) 1707 char_u *longstr; 1708 int len; 1709 int attr; 1710 { 1711 int slen = len; 1712 int room; 1713 1714 room = Columns - msg_col; 1715 if (len > room && room >= 20) 1716 { 1717 slen = (room - 3) / 2; 1718 msg_outtrans_len_attr(longstr, slen, attr); 1719 msg_puts_attr((char_u *)"...", hl_attr(HLF_8)); 1720 } 1721 msg_outtrans_len_attr(longstr + len - slen, slen, attr); 1722 } 1723 1724 /* 1725 * Basic function for writing a message with highlight attributes. 1726 */ 1727 void 1728 msg_puts_attr(s, attr) 1729 char_u *s; 1730 int attr; 1731 { 1732 msg_puts_attr_len(s, -1, attr); 1733 } 1734 1735 /* 1736 * Like msg_puts_attr(), but with a maximum length "maxlen" (in bytes). 1737 * When "maxlen" is -1 there is no maximum length. 1738 * When "maxlen" is >= 0 the message is not put in the history. 1739 */ 1740 static void 1741 msg_puts_attr_len(str, maxlen, attr) 1742 char_u *str; 1743 int maxlen; 1744 int attr; 1745 { 1746 /* 1747 * If redirection is on, also write to the redirection file. 1748 */ 1749 redir_write(str, maxlen); 1750 1751 /* 1752 * Don't print anything when using ":silent cmd". 1753 */ 1754 if (msg_silent != 0) 1755 return; 1756 1757 /* if MSG_HIST flag set, add message to history */ 1758 if ((attr & MSG_HIST) && maxlen < 0) 1759 { 1760 add_msg_hist(str, -1, attr); 1761 attr &= ~MSG_HIST; 1762 } 1763 1764 /* 1765 * When writing something to the screen after it has scrolled, requires a 1766 * wait-return prompt later. Needed when scrolling, resetting 1767 * need_wait_return after some prompt, and then outputting something 1768 * without scrolling 1769 */ 1770 if (msg_scrolled != 0 && !msg_scrolled_ign) 1771 need_wait_return = TRUE; 1772 msg_didany = TRUE; /* remember that something was outputted */ 1773 1774 /* 1775 * If there is no valid screen, use fprintf so we can see error messages. 1776 * If termcap is not active, we may be writing in an alternate console 1777 * window, cursor positioning may not work correctly (window size may be 1778 * different, e.g. for Win32 console) or we just don't know where the 1779 * cursor is. 1780 */ 1781 if (msg_use_printf()) 1782 msg_puts_printf(str, maxlen); 1783 else 1784 msg_puts_display(str, maxlen, attr, FALSE); 1785 } 1786 1787 /* 1788 * The display part of msg_puts_attr_len(). 1789 * May be called recursively to display scroll-back text. 1790 */ 1791 static void 1792 msg_puts_display(str, maxlen, attr, recurse) 1793 char_u *str; 1794 int maxlen; 1795 int attr; 1796 int recurse; 1797 { 1798 char_u *s = str; 1799 char_u *t_s = str; /* string from "t_s" to "s" is still todo */ 1800 int t_col = 0; /* screen cells todo, 0 when "t_s" not used */ 1801 #ifdef FEAT_MBYTE 1802 int l; 1803 int cw; 1804 #endif 1805 char_u *sb_str = str; 1806 int sb_col = msg_col; 1807 int wrap; 1808 1809 did_wait_return = FALSE; 1810 while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen)) 1811 { 1812 /* 1813 * We are at the end of the screen line when: 1814 * - When outputting a newline. 1815 * - When outputting a character in the last column. 1816 */ 1817 if (!recurse && msg_row >= Rows - 1 && (*s == '\n' || ( 1818 #ifdef FEAT_RIGHTLEFT 1819 cmdmsg_rl 1820 ? ( 1821 msg_col <= 1 1822 || (*s == TAB && msg_col <= 7) 1823 # ifdef FEAT_MBYTE 1824 || (has_mbyte && (*mb_ptr2cells)(s) > 1 && msg_col <= 2) 1825 # endif 1826 ) 1827 : 1828 #endif 1829 (msg_col + t_col >= Columns - 1 1830 || (*s == TAB && msg_col + t_col >= ((Columns - 1) & ~7)) 1831 # ifdef FEAT_MBYTE 1832 || (has_mbyte && (*mb_ptr2cells)(s) > 1 1833 && msg_col + t_col >= Columns - 2) 1834 # endif 1835 )))) 1836 { 1837 /* 1838 * The screen is scrolled up when at the last row (some terminals 1839 * scroll automatically, some don't. To avoid problems we scroll 1840 * ourselves). 1841 */ 1842 if (t_col > 0) 1843 /* output postponed text */ 1844 t_puts(&t_col, t_s, s, attr); 1845 1846 /* When no more prompt an no more room, truncate here */ 1847 if (msg_no_more && lines_left == 0) 1848 break; 1849 1850 /* Scroll the screen up one line. */ 1851 msg_scroll_up(); 1852 1853 msg_row = Rows - 2; 1854 if (msg_col >= Columns) /* can happen after screen resize */ 1855 msg_col = Columns - 1; 1856 1857 /* Display char in last column before showing more-prompt. */ 1858 if (*s >= ' ' 1859 #ifdef FEAT_RIGHTLEFT 1860 && !cmdmsg_rl 1861 #endif 1862 ) 1863 { 1864 #ifdef FEAT_MBYTE 1865 if (has_mbyte) 1866 { 1867 if (enc_utf8 && maxlen >= 0) 1868 /* avoid including composing chars after the end */ 1869 l = utfc_ptr2len_len(s, (int)((str + maxlen) - s)); 1870 else 1871 l = (*mb_ptr2len)(s); 1872 s = screen_puts_mbyte(s, l, attr); 1873 } 1874 else 1875 #endif 1876 msg_screen_putchar(*s++, attr); 1877 } 1878 1879 if (p_more) 1880 /* store text for scrolling back */ 1881 store_sb_text(&sb_str, s, attr, &sb_col, TRUE); 1882 1883 inc_msg_scrolled(); 1884 need_wait_return = TRUE; /* may need wait_return in main() */ 1885 if (must_redraw < VALID) 1886 must_redraw = VALID; 1887 redraw_cmdline = TRUE; 1888 if (cmdline_row > 0 && !exmode_active) 1889 --cmdline_row; 1890 1891 /* 1892 * If screen is completely filled and 'more' is set then wait 1893 * for a character. 1894 */ 1895 if (p_more && --lines_left == 0 && State != HITRETURN 1896 && !msg_no_more && !exmode_active) 1897 { 1898 #ifdef FEAT_CON_DIALOG 1899 if (do_more_prompt(NUL)) 1900 s = confirm_msg_tail; 1901 #else 1902 (void)do_more_prompt(NUL); 1903 #endif 1904 if (quit_more) 1905 return; 1906 } 1907 1908 /* When we displayed a char in last column need to check if there 1909 * is still more. */ 1910 if (*s >= ' ' 1911 #ifdef FEAT_RIGHTLEFT 1912 && !cmdmsg_rl 1913 #endif 1914 ) 1915 continue; 1916 } 1917 1918 wrap = *s == '\n' 1919 || msg_col + t_col >= Columns 1920 #ifdef FEAT_MBYTE 1921 || (has_mbyte && (*mb_ptr2cells)(s) > 1 1922 && msg_col + t_col >= Columns - 1) 1923 #endif 1924 ; 1925 if (t_col > 0 && (wrap || *s == '\r' || *s == '\b' 1926 || *s == '\t' || *s == BELL)) 1927 /* output any postponed text */ 1928 t_puts(&t_col, t_s, s, attr); 1929 1930 if (wrap && p_more && !recurse) 1931 /* store text for scrolling back */ 1932 store_sb_text(&sb_str, s, attr, &sb_col, TRUE); 1933 1934 if (*s == '\n') /* go to next line */ 1935 { 1936 msg_didout = FALSE; /* remember that line is empty */ 1937 #ifdef FEAT_RIGHTLEFT 1938 if (cmdmsg_rl) 1939 msg_col = Columns - 1; 1940 else 1941 #endif 1942 msg_col = 0; 1943 if (++msg_row >= Rows) /* safety check */ 1944 msg_row = Rows - 1; 1945 } 1946 else if (*s == '\r') /* go to column 0 */ 1947 { 1948 msg_col = 0; 1949 } 1950 else if (*s == '\b') /* go to previous char */ 1951 { 1952 if (msg_col) 1953 --msg_col; 1954 } 1955 else if (*s == TAB) /* translate Tab into spaces */ 1956 { 1957 do 1958 msg_screen_putchar(' ', attr); 1959 while (msg_col & 7); 1960 } 1961 else if (*s == BELL) /* beep (from ":sh") */ 1962 vim_beep(); 1963 else 1964 { 1965 #ifdef FEAT_MBYTE 1966 if (has_mbyte) 1967 { 1968 cw = (*mb_ptr2cells)(s); 1969 if (enc_utf8 && maxlen >= 0) 1970 /* avoid including composing chars after the end */ 1971 l = utfc_ptr2len_len(s, (int)((str + maxlen) - s)); 1972 else 1973 l = (*mb_ptr2len)(s); 1974 } 1975 else 1976 { 1977 cw = 1; 1978 l = 1; 1979 } 1980 #endif 1981 /* When drawing from right to left or when a double-wide character 1982 * doesn't fit, draw a single character here. Otherwise collect 1983 * characters and draw them all at once later. */ 1984 #if defined(FEAT_RIGHTLEFT) || defined(FEAT_MBYTE) 1985 if ( 1986 # ifdef FEAT_RIGHTLEFT 1987 cmdmsg_rl 1988 # ifdef FEAT_MBYTE 1989 || 1990 # endif 1991 # endif 1992 # ifdef FEAT_MBYTE 1993 (cw > 1 && msg_col + t_col >= Columns - 1) 1994 # endif 1995 ) 1996 { 1997 # ifdef FEAT_MBYTE 1998 if (l > 1) 1999 s = screen_puts_mbyte(s, l, attr) - 1; 2000 else 2001 # endif 2002 msg_screen_putchar(*s, attr); 2003 } 2004 else 2005 #endif 2006 { 2007 /* postpone this character until later */ 2008 if (t_col == 0) 2009 t_s = s; 2010 #ifdef FEAT_MBYTE 2011 t_col += cw; 2012 s += l - 1; 2013 #else 2014 ++t_col; 2015 #endif 2016 } 2017 } 2018 ++s; 2019 } 2020 2021 /* output any postponed text */ 2022 if (t_col > 0) 2023 t_puts(&t_col, t_s, s, attr); 2024 if (p_more && !recurse) 2025 store_sb_text(&sb_str, s, attr, &sb_col, FALSE); 2026 2027 msg_check(); 2028 } 2029 2030 /* 2031 * Scroll the screen up one line for displaying the next message line. 2032 */ 2033 static void 2034 msg_scroll_up() 2035 { 2036 #ifdef FEAT_GUI 2037 /* Remove the cursor before scrolling, ScreenLines[] is going 2038 * to become invalid. */ 2039 if (gui.in_use) 2040 gui_undraw_cursor(); 2041 #endif 2042 /* scrolling up always works */ 2043 screen_del_lines(0, 0, 1, (int)Rows, TRUE, NULL); 2044 2045 if (!can_clear((char_u *)" ")) 2046 { 2047 /* Scrolling up doesn't result in the right background. Set the 2048 * background here. It's not efficient, but avoids that we have to do 2049 * it all over the code. */ 2050 screen_fill((int)Rows - 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2051 2052 /* Also clear the last char of the last but one line if it was not 2053 * cleared before to avoid a scroll-up. */ 2054 if (ScreenAttrs[LineOffset[Rows - 2] + Columns - 1] == (sattr_T)-1) 2055 screen_fill((int)Rows - 2, (int)Rows - 1, 2056 (int)Columns - 1, (int)Columns, ' ', ' ', 0); 2057 } 2058 } 2059 2060 /* 2061 * Increment "msg_scrolled". 2062 */ 2063 static void 2064 inc_msg_scrolled() 2065 { 2066 #ifdef FEAT_EVAL 2067 if (*get_vim_var_str(VV_SCROLLSTART) == NUL) 2068 { 2069 char_u *p = sourcing_name; 2070 char_u *tofree = NULL; 2071 int len; 2072 2073 /* v:scrollstart is empty, set it to the script/function name and line 2074 * number */ 2075 if (p == NULL) 2076 p = (char_u *)_("Unknown"); 2077 else 2078 { 2079 len = STRLEN(p) + 40; 2080 tofree = alloc(len); 2081 if (tofree != NULL) 2082 { 2083 vim_snprintf((char *)tofree, len, _("%s line %ld"), 2084 p, (long)sourcing_lnum); 2085 p = tofree; 2086 } 2087 } 2088 set_vim_var_string(VV_SCROLLSTART, p, -1); 2089 vim_free(tofree); 2090 } 2091 #endif 2092 ++msg_scrolled; 2093 } 2094 2095 /* 2096 * To be able to scroll back at the "more" and "hit-enter" prompts we need to 2097 * store the displayed text and remember where screen lines start. 2098 */ 2099 typedef struct msgchunk_S msgchunk_T; 2100 struct msgchunk_S 2101 { 2102 msgchunk_T *sb_next; 2103 msgchunk_T *sb_prev; 2104 char sb_eol; /* TRUE when line ends after this text */ 2105 int sb_msg_col; /* column in which text starts */ 2106 int sb_attr; /* text attributes */ 2107 char_u sb_text[1]; /* text to be displayed, actually longer */ 2108 }; 2109 2110 static msgchunk_T *last_msgchunk = NULL; /* last displayed text */ 2111 2112 static msgchunk_T *msg_sb_start __ARGS((msgchunk_T *mps)); 2113 static msgchunk_T *disp_sb_line __ARGS((int row, msgchunk_T *smp)); 2114 2115 static int do_clear_sb_text = FALSE; /* clear text on next msg */ 2116 2117 /* 2118 * Store part of a printed message for displaying when scrolling back. 2119 */ 2120 static void 2121 store_sb_text(sb_str, s, attr, sb_col, finish) 2122 char_u **sb_str; /* start of string */ 2123 char_u *s; /* just after string */ 2124 int attr; 2125 int *sb_col; 2126 int finish; /* line ends */ 2127 { 2128 msgchunk_T *mp; 2129 2130 if (do_clear_sb_text) 2131 { 2132 clear_sb_text(); 2133 do_clear_sb_text = FALSE; 2134 } 2135 2136 if (s > *sb_str) 2137 { 2138 mp = (msgchunk_T *)alloc((int)(sizeof(msgchunk_T) + (s - *sb_str))); 2139 if (mp != NULL) 2140 { 2141 mp->sb_eol = finish; 2142 mp->sb_msg_col = *sb_col; 2143 mp->sb_attr = attr; 2144 vim_strncpy(mp->sb_text, *sb_str, s - *sb_str); 2145 2146 if (last_msgchunk == NULL) 2147 { 2148 last_msgchunk = mp; 2149 mp->sb_prev = NULL; 2150 } 2151 else 2152 { 2153 mp->sb_prev = last_msgchunk; 2154 last_msgchunk->sb_next = mp; 2155 last_msgchunk = mp; 2156 } 2157 mp->sb_next = NULL; 2158 } 2159 } 2160 else if (finish && last_msgchunk != NULL) 2161 last_msgchunk->sb_eol = TRUE; 2162 2163 *sb_str = s; 2164 *sb_col = 0; 2165 } 2166 2167 /* 2168 * Finished showing messages, clear the scroll-back text on the next message. 2169 */ 2170 void 2171 may_clear_sb_text() 2172 { 2173 do_clear_sb_text = TRUE; 2174 } 2175 2176 /* 2177 * Clear any text remembered for scrolling back. 2178 * Called when redrawing the screen. 2179 */ 2180 void 2181 clear_sb_text() 2182 { 2183 msgchunk_T *mp; 2184 2185 while (last_msgchunk != NULL) 2186 { 2187 mp = last_msgchunk->sb_prev; 2188 vim_free(last_msgchunk); 2189 last_msgchunk = mp; 2190 } 2191 last_msgchunk = NULL; 2192 } 2193 2194 /* 2195 * "g<" command. 2196 */ 2197 void 2198 show_sb_text() 2199 { 2200 msgchunk_T *mp; 2201 2202 /* Only show somethign if there is more than one line, otherwise it looks 2203 * weird, typing a command without output results in one line. */ 2204 mp = msg_sb_start(last_msgchunk); 2205 if (mp == NULL || mp->sb_prev == NULL) 2206 vim_beep(); 2207 else 2208 { 2209 do_more_prompt('G'); 2210 wait_return(FALSE); 2211 } 2212 } 2213 2214 /* 2215 * Move to the start of screen line in already displayed text. 2216 */ 2217 static msgchunk_T * 2218 msg_sb_start(mps) 2219 msgchunk_T *mps; 2220 { 2221 msgchunk_T *mp = mps; 2222 2223 while (mp != NULL && mp->sb_prev != NULL && !mp->sb_prev->sb_eol) 2224 mp = mp->sb_prev; 2225 return mp; 2226 } 2227 2228 /* 2229 * Display a screen line from previously displayed text at row "row". 2230 * Returns a pointer to the text for the next line (can be NULL). 2231 */ 2232 static msgchunk_T * 2233 disp_sb_line(row, smp) 2234 int row; 2235 msgchunk_T *smp; 2236 { 2237 msgchunk_T *mp = smp; 2238 char_u *p; 2239 2240 for (;;) 2241 { 2242 msg_row = row; 2243 msg_col = mp->sb_msg_col; 2244 p = mp->sb_text; 2245 if (*p == '\n') /* don't display the line break */ 2246 ++p; 2247 msg_puts_display(p, -1, mp->sb_attr, TRUE); 2248 if (mp->sb_eol || mp->sb_next == NULL) 2249 break; 2250 mp = mp->sb_next; 2251 } 2252 return mp->sb_next; 2253 } 2254 2255 /* 2256 * Output any postponed text for msg_puts_attr_len(). 2257 */ 2258 static void 2259 t_puts(t_col, t_s, s, attr) 2260 int *t_col; 2261 char_u *t_s; 2262 char_u *s; 2263 int attr; 2264 { 2265 /* output postponed text */ 2266 msg_didout = TRUE; /* remember that line is not empty */ 2267 screen_puts_len(t_s, (int)(s - t_s), msg_row, msg_col, attr); 2268 msg_col += *t_col; 2269 *t_col = 0; 2270 #ifdef FEAT_MBYTE 2271 /* If the string starts with a composing character don't increment the 2272 * column position for it. */ 2273 if (enc_utf8 && utf_iscomposing(utf_ptr2char(t_s))) 2274 --msg_col; 2275 #endif 2276 if (msg_col >= Columns) 2277 { 2278 msg_col = 0; 2279 ++msg_row; 2280 } 2281 } 2282 2283 /* 2284 * Returns TRUE when messages should be printed with mch_errmsg(). 2285 * This is used when there is no valid screen, so we can see error messages. 2286 * If termcap is not active, we may be writing in an alternate console 2287 * window, cursor positioning may not work correctly (window size may be 2288 * different, e.g. for Win32 console) or we just don't know where the 2289 * cursor is. 2290 */ 2291 int 2292 msg_use_printf() 2293 { 2294 return (!msg_check_screen() 2295 #if defined(WIN3264) && !defined(FEAT_GUI_MSWIN) 2296 || !termcap_active 2297 #endif 2298 || (swapping_screen() && !termcap_active) 2299 ); 2300 } 2301 2302 /* 2303 * Print a message when there is no valid screen. 2304 */ 2305 static void 2306 msg_puts_printf(str, maxlen) 2307 char_u *str; 2308 int maxlen; 2309 { 2310 char_u *s = str; 2311 char_u buf[4]; 2312 char_u *p; 2313 2314 #ifdef WIN3264 2315 if (!(silent_mode && p_verbose == 0)) 2316 mch_settmode(TMODE_COOK); /* handle '\r' and '\n' correctly */ 2317 #endif 2318 while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen)) 2319 { 2320 if (!(silent_mode && p_verbose == 0)) 2321 { 2322 /* NL --> CR NL translation (for Unix, not for "--version") */ 2323 /* NL --> CR translation (for Mac) */ 2324 p = &buf[0]; 2325 if (*s == '\n' && !info_message) 2326 *p++ = '\r'; 2327 #if defined(USE_CR) && !defined(MACOS_X_UNIX) 2328 else 2329 #endif 2330 *p++ = *s; 2331 *p = '\0'; 2332 if (info_message) /* informative message, not an error */ 2333 mch_msg((char *)buf); 2334 else 2335 mch_errmsg((char *)buf); 2336 } 2337 2338 /* primitive way to compute the current column */ 2339 #ifdef FEAT_RIGHTLEFT 2340 if (cmdmsg_rl) 2341 { 2342 if (*s == '\r' || *s == '\n') 2343 msg_col = Columns - 1; 2344 else 2345 --msg_col; 2346 } 2347 else 2348 #endif 2349 { 2350 if (*s == '\r' || *s == '\n') 2351 msg_col = 0; 2352 else 2353 ++msg_col; 2354 } 2355 ++s; 2356 } 2357 msg_didout = TRUE; /* assume that line is not empty */ 2358 2359 #ifdef WIN3264 2360 if (!(silent_mode && p_verbose == 0)) 2361 mch_settmode(TMODE_RAW); 2362 #endif 2363 } 2364 2365 /* 2366 * Show the more-prompt and handle the user response. 2367 * This takes care of scrolling back and displaying previously displayed text. 2368 * When at hit-enter prompt "typed_char" is the already typed character, 2369 * otherwise it's NUL. 2370 * Returns TRUE when jumping ahead to "confirm_msg_tail". 2371 */ 2372 static int 2373 do_more_prompt(typed_char) 2374 int typed_char; 2375 { 2376 int used_typed_char = typed_char; 2377 int oldState = State; 2378 int c; 2379 #ifdef FEAT_CON_DIALOG 2380 int retval = FALSE; 2381 #endif 2382 int scroll; 2383 msgchunk_T *mp_last = NULL; 2384 msgchunk_T *mp; 2385 int i; 2386 2387 if (typed_char == 'G') 2388 { 2389 /* "g<": Find first line on the last page. */ 2390 mp_last = msg_sb_start(last_msgchunk); 2391 for (i = 0; i < Rows - 2 && mp_last != NULL 2392 && mp_last->sb_prev != NULL; ++i) 2393 mp_last = msg_sb_start(mp_last->sb_prev); 2394 } 2395 2396 State = ASKMORE; 2397 #ifdef FEAT_MOUSE 2398 setmouse(); 2399 #endif 2400 if (typed_char == NUL) 2401 msg_moremsg(FALSE); 2402 for (;;) 2403 { 2404 /* 2405 * Get a typed character directly from the user. 2406 */ 2407 if (used_typed_char != NUL) 2408 { 2409 c = used_typed_char; /* was typed at hit-enter prompt */ 2410 used_typed_char = NUL; 2411 } 2412 else 2413 c = get_keystroke(); 2414 2415 #if defined(FEAT_MENU) && defined(FEAT_GUI) 2416 if (c == K_MENU) 2417 { 2418 int idx = get_menu_index(current_menu, ASKMORE); 2419 2420 /* Used a menu. If it starts with CTRL-Y, it must 2421 * be a "Copy" for the clipboard. Otherwise 2422 * assume that we end */ 2423 if (idx == MENU_INDEX_INVALID) 2424 continue; 2425 c = *current_menu->strings[idx]; 2426 if (c != NUL && current_menu->strings[idx][1] != NUL) 2427 ins_typebuf(current_menu->strings[idx] + 1, 2428 current_menu->noremap[idx], 0, TRUE, 2429 current_menu->silent[idx]); 2430 } 2431 #endif 2432 2433 scroll = 0; 2434 switch (c) 2435 { 2436 case BS: /* scroll one line back */ 2437 case K_BS: 2438 case 'k': 2439 case K_UP: 2440 scroll = -1; 2441 break; 2442 2443 case CAR: /* one extra line */ 2444 case NL: 2445 case 'j': 2446 case K_DOWN: 2447 scroll = 1; 2448 break; 2449 2450 case 'u': /* Up half a page */ 2451 case K_PAGEUP: 2452 scroll = -(Rows / 2); 2453 break; 2454 2455 case 'd': /* Down half a page */ 2456 scroll = Rows / 2; 2457 break; 2458 2459 case 'b': /* one page back */ 2460 scroll = -(Rows - 1); 2461 break; 2462 2463 case ' ': /* one extra page */ 2464 case K_PAGEDOWN: 2465 case K_LEFTMOUSE: 2466 scroll = Rows - 1; 2467 break; 2468 2469 case 'g': /* all the way back to the start */ 2470 scroll = -999999; 2471 break; 2472 2473 case 'G': /* all the way to the end */ 2474 scroll = 999999; 2475 lines_left = 999999; 2476 break; 2477 2478 case ':': /* start new command line */ 2479 #ifdef FEAT_CON_DIALOG 2480 if (!confirm_msg_used) 2481 #endif 2482 { 2483 /* Since got_int is set all typeahead will be flushed, but we 2484 * want to keep this ':', remember that in a special way. */ 2485 typeahead_noflush(':'); 2486 cmdline_row = Rows - 1; /* put ':' on this line */ 2487 skip_redraw = TRUE; /* skip redraw once */ 2488 need_wait_return = FALSE; /* don't wait in main() */ 2489 } 2490 /*FALLTHROUGH*/ 2491 case 'q': /* quit */ 2492 case Ctrl_C: 2493 case ESC: 2494 #ifdef FEAT_CON_DIALOG 2495 if (confirm_msg_used) 2496 { 2497 /* Jump to the choices of the dialog. */ 2498 retval = TRUE; 2499 lines_left = Rows - 1; 2500 } 2501 else 2502 #endif 2503 { 2504 got_int = TRUE; 2505 quit_more = TRUE; 2506 } 2507 break; 2508 2509 #ifdef FEAT_CLIPBOARD 2510 case Ctrl_Y: 2511 /* Strange way to allow copying (yanking) a modeless 2512 * selection at the more prompt. Use CTRL-Y, 2513 * because the same is used in Cmdline-mode and at the 2514 * hit-enter prompt. However, scrolling one line up 2515 * might be expected... */ 2516 if (clip_star.state == SELECT_DONE) 2517 clip_copy_modeless_selection(TRUE); 2518 continue; 2519 #endif 2520 default: /* no valid response */ 2521 msg_moremsg(TRUE); 2522 continue; 2523 } 2524 2525 if (scroll != 0) 2526 { 2527 if (scroll < 0) 2528 { 2529 /* go to start of last line */ 2530 if (mp_last == NULL) 2531 mp = msg_sb_start(last_msgchunk); 2532 else if (mp_last->sb_prev != NULL) 2533 mp = msg_sb_start(mp_last->sb_prev); 2534 else 2535 mp = NULL; 2536 2537 /* go to start of line at top of the screen */ 2538 for (i = 0; i < Rows - 2 && mp != NULL && mp->sb_prev != NULL; 2539 ++i) 2540 mp = msg_sb_start(mp->sb_prev); 2541 2542 if (mp != NULL && mp->sb_prev != NULL) 2543 { 2544 /* Find line to be displayed at top. */ 2545 for (i = 0; i > scroll; --i) 2546 { 2547 if (mp == NULL || mp->sb_prev == NULL) 2548 break; 2549 mp = msg_sb_start(mp->sb_prev); 2550 if (mp_last == NULL) 2551 mp_last = msg_sb_start(last_msgchunk); 2552 else 2553 mp_last = msg_sb_start(mp_last->sb_prev); 2554 } 2555 2556 if (scroll == -1 && screen_ins_lines(0, 0, 1, 2557 (int)Rows, NULL) == OK) 2558 { 2559 /* display line at top */ 2560 (void)disp_sb_line(0, mp); 2561 } 2562 else 2563 { 2564 /* redisplay all lines */ 2565 screenclear(); 2566 for (i = 0; i < Rows - 1; ++i) 2567 mp = disp_sb_line(i, mp); 2568 } 2569 scroll = 0; 2570 } 2571 } 2572 else 2573 { 2574 /* First display any text that we scrolled back. */ 2575 while (scroll > 0 && mp_last != NULL) 2576 { 2577 /* scroll up, display line at bottom */ 2578 msg_scroll_up(); 2579 inc_msg_scrolled(); 2580 screen_fill((int)Rows - 2, (int)Rows - 1, 0, 2581 (int)Columns, ' ', ' ', 0); 2582 mp_last = disp_sb_line((int)Rows - 2, mp_last); 2583 --scroll; 2584 } 2585 } 2586 2587 if (scroll < 0 || (scroll == 0 && mp_last != NULL)) 2588 { 2589 /* displayed the requested text, more prompt again */ 2590 screen_fill((int)Rows - 1, (int)Rows, 0, 2591 (int)Columns, ' ', ' ', 0); 2592 msg_moremsg(FALSE); 2593 continue; 2594 } 2595 2596 /* display more text, return to caller */ 2597 lines_left = scroll; 2598 } 2599 2600 break; 2601 } 2602 2603 /* clear the --more-- message */ 2604 screen_fill((int)Rows - 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2605 State = oldState; 2606 #ifdef FEAT_MOUSE 2607 setmouse(); 2608 #endif 2609 if (quit_more) 2610 { 2611 msg_row = Rows - 1; 2612 msg_col = 0; 2613 } 2614 #ifdef FEAT_RIGHTLEFT 2615 else if (cmdmsg_rl) 2616 msg_col = Columns - 1; 2617 #endif 2618 2619 #ifdef FEAT_CON_DIALOG 2620 return retval; 2621 #else 2622 return FALSE; 2623 #endif 2624 } 2625 2626 #if defined(USE_MCH_ERRMSG) || defined(PROTO) 2627 2628 #ifdef mch_errmsg 2629 # undef mch_errmsg 2630 #endif 2631 #ifdef mch_msg 2632 # undef mch_msg 2633 #endif 2634 2635 /* 2636 * Give an error message. To be used when the screen hasn't been initialized 2637 * yet. When stderr can't be used, collect error messages until the GUI has 2638 * started and they can be displayed in a message box. 2639 */ 2640 void 2641 mch_errmsg(str) 2642 char *str; 2643 { 2644 int len; 2645 2646 #if (defined(UNIX) || defined(FEAT_GUI)) && !defined(ALWAYS_USE_GUI) 2647 /* On Unix use stderr if it's a tty. 2648 * When not going to start the GUI also use stderr. 2649 * On Mac, when started from Finder, stderr is the console. */ 2650 if ( 2651 # ifdef UNIX 2652 # ifdef MACOS_X_UNIX 2653 (isatty(2) && strcmp("/dev/console", ttyname(2)) != 0) 2654 # else 2655 isatty(2) 2656 # endif 2657 # ifdef FEAT_GUI 2658 || 2659 # endif 2660 # endif 2661 # ifdef FEAT_GUI 2662 !(gui.in_use || gui.starting) 2663 # endif 2664 ) 2665 { 2666 fprintf(stderr, "%s", str); 2667 return; 2668 } 2669 #endif 2670 2671 /* avoid a delay for a message that isn't there */ 2672 emsg_on_display = FALSE; 2673 2674 len = (int)STRLEN(str) + 1; 2675 if (error_ga.ga_growsize == 0) 2676 { 2677 error_ga.ga_growsize = 80; 2678 error_ga.ga_itemsize = 1; 2679 } 2680 if (ga_grow(&error_ga, len) == OK) 2681 { 2682 mch_memmove((char_u *)error_ga.ga_data + error_ga.ga_len, 2683 (char_u *)str, len); 2684 #ifdef UNIX 2685 /* remove CR characters, they are displayed */ 2686 { 2687 char_u *p; 2688 2689 p = (char_u *)error_ga.ga_data + error_ga.ga_len; 2690 for (;;) 2691 { 2692 p = vim_strchr(p, '\r'); 2693 if (p == NULL) 2694 break; 2695 *p = ' '; 2696 } 2697 } 2698 #endif 2699 --len; /* don't count the NUL at the end */ 2700 error_ga.ga_len += len; 2701 } 2702 } 2703 2704 /* 2705 * Give a message. To be used when the screen hasn't been initialized yet. 2706 * When there is no tty, collect messages until the GUI has started and they 2707 * can be displayed in a message box. 2708 */ 2709 void 2710 mch_msg(str) 2711 char *str; 2712 { 2713 #if (defined(UNIX) || defined(FEAT_GUI)) && !defined(ALWAYS_USE_GUI) 2714 /* On Unix use stdout if we have a tty. This allows "vim -h | more" and 2715 * uses mch_errmsg() when started from the desktop. 2716 * When not going to start the GUI also use stdout. 2717 * On Mac, when started from Finder, stderr is the console. */ 2718 if ( 2719 # ifdef UNIX 2720 # ifdef MACOS_X_UNIX 2721 (isatty(2) && strcmp("/dev/console", ttyname(2)) != 0) 2722 # else 2723 isatty(2) 2724 # endif 2725 # ifdef FEAT_GUI 2726 || 2727 # endif 2728 # endif 2729 # ifdef FEAT_GUI 2730 !(gui.in_use || gui.starting) 2731 # endif 2732 ) 2733 { 2734 printf("%s", str); 2735 return; 2736 } 2737 # endif 2738 mch_errmsg(str); 2739 } 2740 #endif /* USE_MCH_ERRMSG */ 2741 2742 /* 2743 * Put a character on the screen at the current message position and advance 2744 * to the next position. Only for printable ASCII! 2745 */ 2746 static void 2747 msg_screen_putchar(c, attr) 2748 int c; 2749 int attr; 2750 { 2751 msg_didout = TRUE; /* remember that line is not empty */ 2752 screen_putchar(c, msg_row, msg_col, attr); 2753 #ifdef FEAT_RIGHTLEFT 2754 if (cmdmsg_rl) 2755 { 2756 if (--msg_col == 0) 2757 { 2758 msg_col = Columns; 2759 ++msg_row; 2760 } 2761 } 2762 else 2763 #endif 2764 { 2765 if (++msg_col >= Columns) 2766 { 2767 msg_col = 0; 2768 ++msg_row; 2769 } 2770 } 2771 } 2772 2773 void 2774 msg_moremsg(full) 2775 int full; 2776 { 2777 int attr; 2778 char_u *s = (char_u *)_("-- More --"); 2779 2780 attr = hl_attr(HLF_M); 2781 screen_puts(s, (int)Rows - 1, 0, attr); 2782 if (full) 2783 screen_puts((char_u *) 2784 _(" SPACE/d/j: screen/page/line down, b/u/k: up, q: quit "), 2785 (int)Rows - 1, vim_strsize(s), attr); 2786 } 2787 2788 /* 2789 * Repeat the message for the current mode: ASKMORE, EXTERNCMD, CONFIRM or 2790 * exmode_active. 2791 */ 2792 void 2793 repeat_message() 2794 { 2795 if (State == ASKMORE) 2796 { 2797 msg_moremsg(TRUE); /* display --more-- message again */ 2798 msg_row = Rows - 1; 2799 } 2800 #ifdef FEAT_CON_DIALOG 2801 else if (State == CONFIRM) 2802 { 2803 display_confirm_msg(); /* display ":confirm" message again */ 2804 msg_row = Rows - 1; 2805 } 2806 #endif 2807 else if (State == EXTERNCMD) 2808 { 2809 windgoto(msg_row, msg_col); /* put cursor back */ 2810 } 2811 else if (State == HITRETURN || State == SETWSIZE) 2812 { 2813 hit_return_msg(); 2814 msg_row = Rows - 1; 2815 } 2816 } 2817 2818 /* 2819 * msg_check_screen - check if the screen is initialized. 2820 * Also check msg_row and msg_col, if they are too big it may cause a crash. 2821 * While starting the GUI the terminal codes will be set for the GUI, but the 2822 * output goes to the terminal. Don't use the terminal codes then. 2823 */ 2824 static int 2825 msg_check_screen() 2826 { 2827 if (!full_screen || !screen_valid(FALSE)) 2828 return FALSE; 2829 2830 if (msg_row >= Rows) 2831 msg_row = Rows - 1; 2832 if (msg_col >= Columns) 2833 msg_col = Columns - 1; 2834 return TRUE; 2835 } 2836 2837 /* 2838 * Clear from current message position to end of screen. 2839 * Skip this when ":silent" was used, no need to clear for redirection. 2840 */ 2841 void 2842 msg_clr_eos() 2843 { 2844 if (msg_silent == 0) 2845 msg_clr_eos_force(); 2846 } 2847 2848 /* 2849 * Clear from current message position to end of screen. 2850 * Note: msg_col is not updated, so we remember the end of the message 2851 * for msg_check(). 2852 */ 2853 void 2854 msg_clr_eos_force() 2855 { 2856 if (msg_use_printf()) 2857 { 2858 if (full_screen) /* only when termcap codes are valid */ 2859 { 2860 if (*T_CD) 2861 out_str(T_CD); /* clear to end of display */ 2862 else if (*T_CE) 2863 out_str(T_CE); /* clear to end of line */ 2864 } 2865 } 2866 else 2867 { 2868 #ifdef FEAT_RIGHTLEFT 2869 if (cmdmsg_rl) 2870 { 2871 screen_fill(msg_row, msg_row + 1, 0, msg_col + 1, ' ', ' ', 0); 2872 screen_fill(msg_row + 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2873 } 2874 else 2875 #endif 2876 { 2877 screen_fill(msg_row, msg_row + 1, msg_col, (int)Columns, 2878 ' ', ' ', 0); 2879 screen_fill(msg_row + 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2880 } 2881 } 2882 } 2883 2884 /* 2885 * Clear the command line. 2886 */ 2887 void 2888 msg_clr_cmdline() 2889 { 2890 msg_row = cmdline_row; 2891 msg_col = 0; 2892 msg_clr_eos_force(); 2893 } 2894 2895 /* 2896 * end putting a message on the screen 2897 * call wait_return if the message does not fit in the available space 2898 * return TRUE if wait_return not called. 2899 */ 2900 int 2901 msg_end() 2902 { 2903 /* 2904 * if the string is larger than the window, 2905 * or the ruler option is set and we run into it, 2906 * we have to redraw the window. 2907 * Do not do this if we are abandoning the file or editing the command line. 2908 */ 2909 if (!exiting && need_wait_return && !(State & CMDLINE)) 2910 { 2911 wait_return(FALSE); 2912 return FALSE; 2913 } 2914 out_flush(); 2915 return TRUE; 2916 } 2917 2918 /* 2919 * If the written message runs into the shown command or ruler, we have to 2920 * wait for hit-return and redraw the window later. 2921 */ 2922 void 2923 msg_check() 2924 { 2925 if (msg_row == Rows - 1 && msg_col >= sc_col) 2926 { 2927 need_wait_return = TRUE; 2928 redraw_cmdline = TRUE; 2929 } 2930 } 2931 2932 /* 2933 * May write a string to the redirection file. 2934 * When "maxlen" is -1 write the whole string, otherwise up to "maxlen" bytes. 2935 */ 2936 static void 2937 redir_write(str, maxlen) 2938 char_u *str; 2939 int maxlen; 2940 { 2941 char_u *s = str; 2942 static int cur_col = 0; 2943 2944 /* Don't do anything for displaying prompts and the like. */ 2945 if (redir_off) 2946 return; 2947 2948 /* 2949 * If 'verbosefile' is set write message in that file. 2950 * Must come before the rest because of updating "msg_col". 2951 */ 2952 if (*p_vfile != NUL) 2953 verbose_write(s, maxlen); 2954 2955 if (redir_fd != NULL 2956 #ifdef FEAT_EVAL 2957 || redir_reg || redir_vname 2958 #endif 2959 ) 2960 { 2961 /* If the string doesn't start with CR or NL, go to msg_col */ 2962 if (*s != '\n' && *s != '\r') 2963 { 2964 while (cur_col < msg_col) 2965 { 2966 #ifdef FEAT_EVAL 2967 if (redir_reg) 2968 write_reg_contents(redir_reg, (char_u *)" ", -1, TRUE); 2969 else if (redir_vname) 2970 var_redir_str((char_u *)" ", -1); 2971 else if (redir_fd) 2972 #endif 2973 fputs(" ", redir_fd); 2974 ++cur_col; 2975 } 2976 } 2977 2978 #ifdef FEAT_EVAL 2979 if (redir_reg) 2980 write_reg_contents(redir_reg, s, maxlen, TRUE); 2981 if (redir_vname) 2982 var_redir_str(s, maxlen); 2983 #endif 2984 2985 /* Adjust the current column */ 2986 while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen)) 2987 { 2988 #ifdef FEAT_EVAL 2989 if (!redir_reg && !redir_vname && redir_fd != NULL) 2990 #endif 2991 putc(*s, redir_fd); 2992 if (*s == '\r' || *s == '\n') 2993 cur_col = 0; 2994 else if (*s == '\t') 2995 cur_col += (8 - cur_col % 8); 2996 else 2997 ++cur_col; 2998 ++s; 2999 } 3000 3001 if (msg_silent != 0) /* should update msg_col */ 3002 msg_col = cur_col; 3003 } 3004 } 3005 3006 /* 3007 * Before giving verbose messsage. 3008 * Must always be called paired with verbose_leave()! 3009 */ 3010 void 3011 verbose_enter() 3012 { 3013 if (*p_vfile != NUL) 3014 ++msg_silent; 3015 } 3016 3017 /* 3018 * After giving verbose message. 3019 * Must always be called paired with verbose_enter()! 3020 */ 3021 void 3022 verbose_leave() 3023 { 3024 if (*p_vfile != NUL) 3025 if (--msg_silent < 0) 3026 msg_silent = 0; 3027 } 3028 3029 /* 3030 * Like verbose_enter() and set msg_scroll when displaying the message. 3031 */ 3032 void 3033 verbose_enter_scroll() 3034 { 3035 if (*p_vfile != NUL) 3036 ++msg_silent; 3037 else 3038 /* always scroll up, don't overwrite */ 3039 msg_scroll = TRUE; 3040 } 3041 3042 /* 3043 * Like verbose_leave() and set cmdline_row when displaying the message. 3044 */ 3045 void 3046 verbose_leave_scroll() 3047 { 3048 if (*p_vfile != NUL) 3049 { 3050 if (--msg_silent < 0) 3051 msg_silent = 0; 3052 } 3053 else 3054 cmdline_row = msg_row; 3055 } 3056 3057 static FILE *verbose_fd = NULL; 3058 static int verbose_did_open = FALSE; 3059 3060 /* 3061 * Called when 'verbosefile' is set: stop writing to the file. 3062 */ 3063 void 3064 verbose_stop() 3065 { 3066 if (verbose_fd != NULL) 3067 { 3068 fclose(verbose_fd); 3069 verbose_fd = NULL; 3070 } 3071 verbose_did_open = FALSE; 3072 } 3073 3074 /* 3075 * Open the file 'verbosefile'. 3076 * Return FAIL or OK. 3077 */ 3078 int 3079 verbose_open() 3080 { 3081 if (verbose_fd == NULL && !verbose_did_open) 3082 { 3083 /* Only give the error message once. */ 3084 verbose_did_open = TRUE; 3085 3086 verbose_fd = mch_fopen((char *)p_vfile, "a"); 3087 if (verbose_fd == NULL) 3088 { 3089 EMSG2(_(e_notopen), p_vfile); 3090 return FAIL; 3091 } 3092 } 3093 return OK; 3094 } 3095 3096 /* 3097 * Write a string to 'verbosefile'. 3098 * When "maxlen" is -1 write the whole string, otherwise up to "maxlen" bytes. 3099 */ 3100 static void 3101 verbose_write(str, maxlen) 3102 char_u *str; 3103 int maxlen; 3104 { 3105 char_u *s = str; 3106 static int cur_col = 0; 3107 3108 /* Open the file when called the first time. */ 3109 if (verbose_fd == NULL) 3110 verbose_open(); 3111 3112 if (verbose_fd != NULL) 3113 { 3114 /* If the string doesn't start with CR or NL, go to msg_col */ 3115 if (*s != '\n' && *s != '\r') 3116 { 3117 while (cur_col < msg_col) 3118 { 3119 fputs(" ", verbose_fd); 3120 ++cur_col; 3121 } 3122 } 3123 3124 /* Adjust the current column */ 3125 while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen)) 3126 { 3127 putc(*s, verbose_fd); 3128 if (*s == '\r' || *s == '\n') 3129 cur_col = 0; 3130 else if (*s == '\t') 3131 cur_col += (8 - cur_col % 8); 3132 else 3133 ++cur_col; 3134 ++s; 3135 } 3136 } 3137 } 3138 3139 /* 3140 * Give a warning message (for searching). 3141 * Use 'w' highlighting and may repeat the message after redrawing 3142 */ 3143 void 3144 give_warning(message, hl) 3145 char_u *message; 3146 int hl; 3147 { 3148 /* Don't do this for ":silent". */ 3149 if (msg_silent != 0) 3150 return; 3151 3152 /* Don't want a hit-enter prompt here. */ 3153 ++no_wait_return; 3154 3155 #ifdef FEAT_EVAL 3156 set_vim_var_string(VV_WARNINGMSG, message, -1); 3157 #endif 3158 vim_free(keep_msg); 3159 keep_msg = NULL; 3160 if (hl) 3161 keep_msg_attr = hl_attr(HLF_W); 3162 else 3163 keep_msg_attr = 0; 3164 if (msg_attr(message, keep_msg_attr) && msg_scrolled == 0) 3165 set_keep_msg(message); 3166 msg_didout = FALSE; /* overwrite this message */ 3167 msg_nowait = TRUE; /* don't wait for this message */ 3168 msg_col = 0; 3169 3170 --no_wait_return; 3171 } 3172 3173 /* 3174 * Advance msg cursor to column "col". 3175 */ 3176 void 3177 msg_advance(col) 3178 int col; 3179 { 3180 if (msg_silent != 0) /* nothing to advance to */ 3181 { 3182 msg_col = col; /* for redirection, may fill it up later */ 3183 return; 3184 } 3185 if (col >= Columns) /* not enough room */ 3186 col = Columns - 1; 3187 #ifdef FEAT_RIGHTLEFT 3188 if (cmdmsg_rl) 3189 while (msg_col > Columns - col) 3190 msg_putchar(' '); 3191 else 3192 #endif 3193 while (msg_col < col) 3194 msg_putchar(' '); 3195 } 3196 3197 #if defined(FEAT_CON_DIALOG) || defined(PROTO) 3198 /* 3199 * Used for "confirm()" function, and the :confirm command prefix. 3200 * Versions which haven't got flexible dialogs yet, and console 3201 * versions, get this generic handler which uses the command line. 3202 * 3203 * type = one of: 3204 * VIM_QUESTION, VIM_INFO, VIM_WARNING, VIM_ERROR or VIM_GENERIC 3205 * title = title string (can be NULL for default) 3206 * (neither used in console dialogs at the moment) 3207 * 3208 * Format of the "buttons" string: 3209 * "Button1Name\nButton2Name\nButton3Name" 3210 * The first button should normally be the default/accept 3211 * The second button should be the 'Cancel' button 3212 * Other buttons- use your imagination! 3213 * A '&' in a button name becomes a shortcut, so each '&' should be before a 3214 * different letter. 3215 */ 3216 /* ARGSUSED */ 3217 int 3218 do_dialog(type, title, message, buttons, dfltbutton, textfield) 3219 int type; 3220 char_u *title; 3221 char_u *message; 3222 char_u *buttons; 3223 int dfltbutton; 3224 char_u *textfield; /* IObuff for inputdialog(), NULL otherwise */ 3225 { 3226 int oldState; 3227 int retval = 0; 3228 char_u *hotkeys; 3229 int c; 3230 int i; 3231 3232 #ifndef NO_CONSOLE 3233 /* Don't output anything in silent mode ("ex -s") */ 3234 if (silent_mode) 3235 return dfltbutton; /* return default option */ 3236 #endif 3237 3238 #ifdef FEAT_GUI_DIALOG 3239 /* When GUI is running and 'c' not in 'guioptions', use the GUI dialog */ 3240 if (gui.in_use && vim_strchr(p_go, GO_CONDIALOG) == NULL) 3241 { 3242 c = gui_mch_dialog(type, title, message, buttons, dfltbutton, 3243 textfield); 3244 msg_end_prompt(); 3245 3246 /* Flush output to avoid that further messages and redrawing is done 3247 * in the wrong order. */ 3248 out_flush(); 3249 gui_mch_update(); 3250 3251 return c; 3252 } 3253 #endif 3254 3255 oldState = State; 3256 State = CONFIRM; 3257 #ifdef FEAT_MOUSE 3258 setmouse(); 3259 #endif 3260 3261 /* 3262 * Since we wait for a keypress, don't make the 3263 * user press RETURN as well afterwards. 3264 */ 3265 ++no_wait_return; 3266 hotkeys = msg_show_console_dialog(message, buttons, dfltbutton); 3267 3268 if (hotkeys != NULL) 3269 { 3270 for (;;) 3271 { 3272 /* Get a typed character directly from the user. */ 3273 c = get_keystroke(); 3274 switch (c) 3275 { 3276 case CAR: /* User accepts default option */ 3277 case NL: 3278 retval = dfltbutton; 3279 break; 3280 case Ctrl_C: /* User aborts/cancels */ 3281 case ESC: 3282 retval = 0; 3283 break; 3284 default: /* Could be a hotkey? */ 3285 if (c < 0) /* special keys are ignored here */ 3286 continue; 3287 /* Make the character lowercase, as chars in "hotkeys" are. */ 3288 c = MB_TOLOWER(c); 3289 retval = 1; 3290 for (i = 0; hotkeys[i]; ++i) 3291 { 3292 #ifdef FEAT_MBYTE 3293 if (has_mbyte) 3294 { 3295 if ((*mb_ptr2char)(hotkeys + i) == c) 3296 break; 3297 i += (*mb_ptr2len)(hotkeys + i) - 1; 3298 } 3299 else 3300 #endif 3301 if (hotkeys[i] == c) 3302 break; 3303 ++retval; 3304 } 3305 if (hotkeys[i]) 3306 break; 3307 /* No hotkey match, so keep waiting */ 3308 continue; 3309 } 3310 break; 3311 } 3312 3313 vim_free(hotkeys); 3314 } 3315 3316 State = oldState; 3317 #ifdef FEAT_MOUSE 3318 setmouse(); 3319 #endif 3320 --no_wait_return; 3321 msg_end_prompt(); 3322 3323 return retval; 3324 } 3325 3326 static int copy_char __ARGS((char_u *from, char_u *to, int lowercase)); 3327 3328 /* 3329 * Copy one character from "*from" to "*to", taking care of multi-byte 3330 * characters. Return the length of the character in bytes. 3331 */ 3332 static int 3333 copy_char(from, to, lowercase) 3334 char_u *from; 3335 char_u *to; 3336 int lowercase; /* make character lower case */ 3337 { 3338 #ifdef FEAT_MBYTE 3339 int len; 3340 int c; 3341 3342 if (has_mbyte) 3343 { 3344 if (lowercase) 3345 { 3346 c = MB_TOLOWER((*mb_ptr2char)(from)); 3347 return (*mb_char2bytes)(c, to); 3348 } 3349 else 3350 { 3351 len = (*mb_ptr2len)(from); 3352 mch_memmove(to, from, (size_t)len); 3353 return len; 3354 } 3355 } 3356 else 3357 #endif 3358 { 3359 if (lowercase) 3360 *to = (char_u)TOLOWER_LOC(*from); 3361 else 3362 *to = *from; 3363 return 1; 3364 } 3365 } 3366 3367 /* 3368 * Format the dialog string, and display it at the bottom of 3369 * the screen. Return a string of hotkey chars (if defined) for 3370 * each 'button'. If a button has no hotkey defined, the first character of 3371 * the button is used. 3372 * The hotkeys can be multi-byte characters, but without combining chars. 3373 * 3374 * Returns an allocated string with hotkeys, or NULL for error. 3375 */ 3376 static char_u * 3377 msg_show_console_dialog(message, buttons, dfltbutton) 3378 char_u *message; 3379 char_u *buttons; 3380 int dfltbutton; 3381 { 3382 int len = 0; 3383 #ifdef FEAT_MBYTE 3384 # define HOTK_LEN (has_mbyte ? MB_MAXBYTES : 1) 3385 #else 3386 # define HOTK_LEN 1 3387 #endif 3388 int lenhotkey = HOTK_LEN; /* count first button */ 3389 char_u *hotk = NULL; 3390 char_u *msgp = NULL; 3391 char_u *hotkp = NULL; 3392 char_u *r; 3393 int copy; 3394 #define HAS_HOTKEY_LEN 30 3395 char_u has_hotkey[HAS_HOTKEY_LEN]; 3396 int first_hotkey = FALSE; /* first char of button is hotkey */ 3397 int idx; 3398 3399 has_hotkey[0] = FALSE; 3400 3401 /* 3402 * First loop: compute the size of memory to allocate. 3403 * Second loop: copy to the allocated memory. 3404 */ 3405 for (copy = 0; copy <= 1; ++copy) 3406 { 3407 r = buttons; 3408 idx = 0; 3409 while (*r) 3410 { 3411 if (*r == DLG_BUTTON_SEP) 3412 { 3413 if (copy) 3414 { 3415 *msgp++ = ','; 3416 *msgp++ = ' '; /* '\n' -> ', ' */ 3417 3418 /* advance to next hotkey and set default hotkey */ 3419 #ifdef FEAT_MBYTE 3420 if (has_mbyte) 3421 hotkp += (*mb_ptr2len)(hotkp); 3422 else 3423 #endif 3424 ++hotkp; 3425 (void)copy_char(r + 1, hotkp, TRUE); 3426 if (dfltbutton) 3427 --dfltbutton; 3428 3429 /* If no hotkey is specified first char is used. */ 3430 if (idx < HAS_HOTKEY_LEN - 1 && !has_hotkey[++idx]) 3431 first_hotkey = TRUE; 3432 } 3433 else 3434 { 3435 len += 3; /* '\n' -> ', '; 'x' -> '(x)' */ 3436 lenhotkey += HOTK_LEN; /* each button needs a hotkey */ 3437 if (idx < HAS_HOTKEY_LEN - 1) 3438 has_hotkey[++idx] = FALSE; 3439 } 3440 } 3441 else if (*r == DLG_HOTKEY_CHAR || first_hotkey) 3442 { 3443 if (*r == DLG_HOTKEY_CHAR) 3444 ++r; 3445 first_hotkey = FALSE; 3446 if (copy) 3447 { 3448 if (*r == DLG_HOTKEY_CHAR) /* '&&a' -> '&a' */ 3449 *msgp++ = *r; 3450 else 3451 { 3452 /* '&a' -> '[a]' */ 3453 *msgp++ = (dfltbutton == 1) ? '[' : '('; 3454 msgp += copy_char(r, msgp, FALSE); 3455 *msgp++ = (dfltbutton == 1) ? ']' : ')'; 3456 3457 /* redefine hotkey */ 3458 (void)copy_char(r, hotkp, TRUE); 3459 } 3460 } 3461 else 3462 { 3463 ++len; /* '&a' -> '[a]' */ 3464 if (idx < HAS_HOTKEY_LEN - 1) 3465 has_hotkey[idx] = TRUE; 3466 } 3467 } 3468 else 3469 { 3470 /* everything else copy literally */ 3471 if (copy) 3472 msgp += copy_char(r, msgp, FALSE); 3473 } 3474 3475 /* advance to the next character */ 3476 mb_ptr_adv(r); 3477 } 3478 3479 if (copy) 3480 { 3481 *msgp++ = ':'; 3482 *msgp++ = ' '; 3483 *msgp = NUL; 3484 mb_ptr_adv(hotkp); 3485 *hotkp = NUL; 3486 } 3487 else 3488 { 3489 len += STRLEN(message) 3490 + 2 /* for the NL's */ 3491 + STRLEN(buttons) 3492 + 3; /* for the ": " and NUL */ 3493 lenhotkey++; /* for the NUL */ 3494 3495 /* If no hotkey is specified first char is used. */ 3496 if (!has_hotkey[0]) 3497 { 3498 first_hotkey = TRUE; 3499 len += 2; /* "x" -> "[x]" */ 3500 } 3501 3502 /* 3503 * Now allocate and load the strings 3504 */ 3505 vim_free(confirm_msg); 3506 confirm_msg = alloc(len); 3507 if (confirm_msg == NULL) 3508 return NULL; 3509 *confirm_msg = NUL; 3510 hotk = alloc(lenhotkey); 3511 if (hotk == NULL) 3512 return NULL; 3513 3514 *confirm_msg = '\n'; 3515 STRCPY(confirm_msg + 1, message); 3516 3517 msgp = confirm_msg + 1 + STRLEN(message); 3518 hotkp = hotk; 3519 3520 /* define first default hotkey */ 3521 (void)copy_char(buttons, hotkp, TRUE); 3522 3523 /* Remember where the choices start, displaying starts here when 3524 * "hotkp" typed at the more prompt. */ 3525 confirm_msg_tail = msgp; 3526 *msgp++ = '\n'; 3527 } 3528 } 3529 3530 display_confirm_msg(); 3531 return hotk; 3532 } 3533 3534 /* 3535 * Display the ":confirm" message. Also called when screen resized. 3536 */ 3537 void 3538 display_confirm_msg() 3539 { 3540 /* avoid that 'q' at the more prompt truncates the message here */ 3541 ++confirm_msg_used; 3542 if (confirm_msg != NULL) 3543 msg_puts_attr(confirm_msg, hl_attr(HLF_M)); 3544 --confirm_msg_used; 3545 } 3546 3547 #endif /* FEAT_CON_DIALOG */ 3548 3549 #if defined(FEAT_CON_DIALOG) || defined(FEAT_GUI_DIALOG) 3550 3551 int 3552 vim_dialog_yesno(type, title, message, dflt) 3553 int type; 3554 char_u *title; 3555 char_u *message; 3556 int dflt; 3557 { 3558 if (do_dialog(type, 3559 title == NULL ? (char_u *)_("Question") : title, 3560 message, 3561 (char_u *)_("&Yes\n&No"), dflt, NULL) == 1) 3562 return VIM_YES; 3563 return VIM_NO; 3564 } 3565 3566 int 3567 vim_dialog_yesnocancel(type, title, message, dflt) 3568 int type; 3569 char_u *title; 3570 char_u *message; 3571 int dflt; 3572 { 3573 switch (do_dialog(type, 3574 title == NULL ? (char_u *)_("Question") : title, 3575 message, 3576 (char_u *)_("&Yes\n&No\n&Cancel"), dflt, NULL)) 3577 { 3578 case 1: return VIM_YES; 3579 case 2: return VIM_NO; 3580 } 3581 return VIM_CANCEL; 3582 } 3583 3584 int 3585 vim_dialog_yesnoallcancel(type, title, message, dflt) 3586 int type; 3587 char_u *title; 3588 char_u *message; 3589 int dflt; 3590 { 3591 switch (do_dialog(type, 3592 title == NULL ? (char_u *)"Question" : title, 3593 message, 3594 (char_u *)_("&Yes\n&No\nSave &All\n&Discard All\n&Cancel"), 3595 dflt, NULL)) 3596 { 3597 case 1: return VIM_YES; 3598 case 2: return VIM_NO; 3599 case 3: return VIM_ALL; 3600 case 4: return VIM_DISCARDALL; 3601 } 3602 return VIM_CANCEL; 3603 } 3604 3605 #endif /* FEAT_GUI_DIALOG || FEAT_CON_DIALOG */ 3606 3607 #if defined(FEAT_BROWSE) || defined(PROTO) 3608 /* 3609 * Generic browse function. Calls gui_mch_browse() when possible. 3610 * Later this may pop-up a non-GUI file selector (external command?). 3611 */ 3612 char_u * 3613 do_browse(flags, title, dflt, ext, initdir, filter, buf) 3614 int flags; /* BROWSE_SAVE and BROWSE_DIR */ 3615 char_u *title; /* title for the window */ 3616 char_u *dflt; /* default file name (may include directory) */ 3617 char_u *ext; /* extension added */ 3618 char_u *initdir; /* initial directory, NULL for current dir or 3619 when using path from "dflt" */ 3620 char_u *filter; /* file name filter */ 3621 buf_T *buf; /* buffer to read/write for */ 3622 { 3623 char_u *fname; 3624 static char_u *last_dir = NULL; /* last used directory */ 3625 char_u *tofree = NULL; 3626 int save_browse = cmdmod.browse; 3627 3628 /* Must turn off browse to avoid that autocommands will get the 3629 * flag too! */ 3630 cmdmod.browse = FALSE; 3631 3632 if (title == NULL || *title == NUL) 3633 { 3634 if (flags & BROWSE_DIR) 3635 title = (char_u *)_("Select Directory dialog"); 3636 else if (flags & BROWSE_SAVE) 3637 title = (char_u *)_("Save File dialog"); 3638 else 3639 title = (char_u *)_("Open File dialog"); 3640 } 3641 3642 /* When no directory specified, use default file name, default dir, buffer 3643 * dir, last dir or current dir */ 3644 if ((initdir == NULL || *initdir == NUL) && dflt != NULL && *dflt != NUL) 3645 { 3646 if (mch_isdir(dflt)) /* default file name is a directory */ 3647 { 3648 initdir = dflt; 3649 dflt = NULL; 3650 } 3651 else if (gettail(dflt) != dflt) /* default file name includes a path */ 3652 { 3653 tofree = vim_strsave(dflt); 3654 if (tofree != NULL) 3655 { 3656 initdir = tofree; 3657 *gettail(initdir) = NUL; 3658 dflt = gettail(dflt); 3659 } 3660 } 3661 } 3662 3663 if (initdir == NULL || *initdir == NUL) 3664 { 3665 /* When 'browsedir' is a directory, use it */ 3666 if (STRCMP(p_bsdir, "last") != 0 3667 && STRCMP(p_bsdir, "buffer") != 0 3668 && STRCMP(p_bsdir, "current") != 0 3669 && mch_isdir(p_bsdir)) 3670 initdir = p_bsdir; 3671 /* When saving or 'browsedir' is "buffer", use buffer fname */ 3672 else if (((flags & BROWSE_SAVE) || *p_bsdir == 'b') 3673 && buf != NULL && buf->b_ffname != NULL) 3674 { 3675 if (dflt == NULL || *dflt == NUL) 3676 dflt = gettail(curbuf->b_ffname); 3677 tofree = vim_strsave(curbuf->b_ffname); 3678 if (tofree != NULL) 3679 { 3680 initdir = tofree; 3681 *gettail(initdir) = NUL; 3682 } 3683 } 3684 /* When 'browsedir' is "last", use dir from last browse */ 3685 else if (*p_bsdir == 'l') 3686 initdir = last_dir; 3687 /* When 'browsedir is "current", use current directory. This is the 3688 * default already, leave initdir empty. */ 3689 } 3690 3691 # ifdef FEAT_GUI 3692 if (gui.in_use) /* when this changes, also adjust f_has()! */ 3693 { 3694 if (filter == NULL 3695 # ifdef FEAT_EVAL 3696 && (filter = get_var_value((char_u *)"b:browsefilter")) == NULL 3697 && (filter = get_var_value((char_u *)"g:browsefilter")) == NULL 3698 # endif 3699 ) 3700 filter = BROWSE_FILTER_DEFAULT; 3701 if (flags & BROWSE_DIR) 3702 { 3703 # if defined(HAVE_GTK2) || defined(WIN3264) 3704 /* For systems that have a directory dialog. */ 3705 fname = gui_mch_browsedir(title, initdir); 3706 # else 3707 /* Generic solution for selecting a directory: select a file and 3708 * remove the file name. */ 3709 fname = gui_mch_browse(0, title, dflt, ext, initdir, (char_u *)""); 3710 # endif 3711 # if !defined(HAVE_GTK2) 3712 /* Win32 adds a dummy file name, others return an arbitrary file 3713 * name. GTK+ 2 returns only the directory, */ 3714 if (fname != NULL && *fname != NUL && !mch_isdir(fname)) 3715 { 3716 /* Remove the file name. */ 3717 char_u *tail = gettail_sep(fname); 3718 3719 if (tail == fname) 3720 *tail++ = '.'; /* use current dir */ 3721 *tail = NUL; 3722 } 3723 # endif 3724 } 3725 else 3726 fname = gui_mch_browse(flags & BROWSE_SAVE, 3727 title, dflt, ext, initdir, filter); 3728 3729 /* We hang around in the dialog for a while, the user might do some 3730 * things to our files. The Win32 dialog allows deleting or renaming 3731 * a file, check timestamps. */ 3732 need_check_timestamps = TRUE; 3733 did_check_timestamps = FALSE; 3734 } 3735 else 3736 # endif 3737 { 3738 /* TODO: non-GUI file selector here */ 3739 EMSG(_("E338: Sorry, no file browser in console mode")); 3740 fname = NULL; 3741 } 3742 3743 /* keep the directory for next time */ 3744 if (fname != NULL) 3745 { 3746 vim_free(last_dir); 3747 last_dir = vim_strsave(fname); 3748 if (last_dir != NULL && !(flags & BROWSE_DIR)) 3749 { 3750 *gettail(last_dir) = NUL; 3751 if (*last_dir == NUL) 3752 { 3753 /* filename only returned, must be in current dir */ 3754 vim_free(last_dir); 3755 last_dir = alloc(MAXPATHL); 3756 if (last_dir != NULL) 3757 mch_dirname(last_dir, MAXPATHL); 3758 } 3759 } 3760 } 3761 3762 vim_free(tofree); 3763 cmdmod.browse = save_browse; 3764 3765 return fname; 3766 } 3767 #endif 3768 3769 #if defined(HAVE_STDARG_H) && defined(FEAT_EVAL) 3770 static char *e_printf = N_("E766: Insufficient arguments for printf()"); 3771 3772 static long tv_nr __ARGS((typval_T *tvs, int *idxp)); 3773 static char *tv_str __ARGS((typval_T *tvs, int *idxp)); 3774 3775 /* 3776 * Get number argument from "idxp" entry in "tvs". First entry is 1. 3777 */ 3778 static long 3779 tv_nr(tvs, idxp) 3780 typval_T *tvs; 3781 int *idxp; 3782 { 3783 int idx = *idxp - 1; 3784 long n = 0; 3785 int err = FALSE; 3786 3787 if (tvs[idx].v_type == VAR_UNKNOWN) 3788 EMSG(_(e_printf)); 3789 else 3790 { 3791 ++*idxp; 3792 n = get_tv_number_chk(&tvs[idx], &err); 3793 if (err) 3794 n = 0; 3795 } 3796 return n; 3797 } 3798 3799 /* 3800 * Get string argument from "idxp" entry in "tvs". First entry is 1. 3801 * Returns NULL for an error. 3802 */ 3803 static char * 3804 tv_str(tvs, idxp) 3805 typval_T *tvs; 3806 int *idxp; 3807 { 3808 int idx = *idxp - 1; 3809 char *s = NULL; 3810 3811 if (tvs[idx].v_type == VAR_UNKNOWN) 3812 EMSG(_(e_printf)); 3813 else 3814 { 3815 ++*idxp; 3816 s = (char *)get_tv_string_chk(&tvs[idx]); 3817 } 3818 return s; 3819 } 3820 #endif 3821 3822 /* 3823 * This code was included to provide a portable vsnprintf() and snprintf(). 3824 * Some systems may provide their own, but we always use these for 3825 * consistency. 3826 * 3827 * This code is based on snprintf.c - a portable implementation of snprintf 3828 * by Mark Martinec <[email protected]>, Version 2.2, 2000-10-06. 3829 * Included with permission. It was heavely modified to fit in Vim. 3830 * The original code, including useful comments, can be found here: 3831 * http://www.ijs.si/software/snprintf/ 3832 * 3833 * This snprintf() only supports the following conversion specifiers: 3834 * s, c, d, u, o, x, X, p (and synonyms: i, D, U, O - see below) 3835 * with flags: '-', '+', ' ', '0' and '#'. 3836 * An asterisk is supported for field width as well as precision. 3837 * 3838 * Length modifiers 'h' (short int) and 'l' (long int) are supported. 3839 * 'll' (long long int) is not supported. 3840 * 3841 * The locale is not used, the string is used as a byte string. This is only 3842 * relevant for double-byte encodings where the second byte may be '%'. 3843 * 3844 * It is permitted for str_m to be zero, and it is permitted to specify NULL 3845 * pointer for resulting string argument if str_m is zero (as per ISO C99). 3846 * 3847 * The return value is the number of characters which would be generated 3848 * for the given input, excluding the trailing null. If this value 3849 * is greater or equal to str_m, not all characters from the result 3850 * have been stored in str, output bytes beyond the (str_m-1) -th character 3851 * are discarded. If str_m is greater than zero it is guaranteed 3852 * the resulting string will be null-terminated. 3853 */ 3854 3855 /* 3856 * When va_list is not supported we only define vim_snprintf(). 3857 * 3858 * vim_vsnprintf() can be invoked with either "va_list" or a list of 3859 * "typval_T". When the latter is not used it must be NULL. 3860 */ 3861 3862 /* When generating prototypes all of this is skipped, cproto doesn't 3863 * understand this. */ 3864 #ifndef PROTO 3865 # ifdef HAVE_STDARG_H 3866 int 3867 vim_snprintf(char *str, size_t str_m, char *fmt, ...) 3868 { 3869 va_list ap; 3870 int str_l; 3871 3872 va_start(ap, fmt); 3873 str_l = vim_vsnprintf(str, str_m, fmt, ap, NULL); 3874 va_end(ap); 3875 return str_l; 3876 } 3877 3878 int 3879 vim_vsnprintf(str, str_m, fmt, ap, tvs) 3880 # else 3881 /* clumsy way to work around missing va_list */ 3882 # define get_a_arg(i) (++i, i == 2 ? a1 : i == 3 ? a2 : i == 4 ? a3 : i == 5 ? a4 : i == 6 ? a5 : i == 7 ? a6 : i == 8 ? a7 : i == 9 ? a8 : i == 10 ? a9 : a10) 3883 3884 /* VARARGS */ 3885 int 3886 #ifdef __BORLANDC__ 3887 _RTLENTRYF 3888 #endif 3889 vim_snprintf(str, str_m, fmt, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) 3890 # endif 3891 char *str; 3892 size_t str_m; 3893 char *fmt; 3894 # ifdef HAVE_STDARG_H 3895 va_list ap; 3896 typval_T *tvs; 3897 # else 3898 long a1, a2, a3, a4, a5, a6, a7, a8, a9, a10; 3899 # endif 3900 { 3901 size_t str_l = 0; 3902 char *p = fmt; 3903 int arg_idx = 1; 3904 3905 if (p == NULL) 3906 p = ""; 3907 while (*p != NUL) 3908 { 3909 if (*p != '%') 3910 { 3911 char *q = strchr(p + 1, '%'); 3912 size_t n = (q == NULL) ? STRLEN(p) : (q - p); 3913 3914 /* Copy up to the next '%' or NUL without any changes. */ 3915 if (str_l < str_m) 3916 { 3917 size_t avail = str_m - str_l; 3918 3919 mch_memmove(str + str_l, p, n > avail ? avail : n); 3920 } 3921 p += n; 3922 str_l += n; 3923 } 3924 else 3925 { 3926 size_t min_field_width = 0, precision = 0; 3927 int zero_padding = 0, precision_specified = 0, justify_left = 0; 3928 int alternate_form = 0, force_sign = 0; 3929 3930 /* If both the ' ' and '+' flags appear, the ' ' flag should be 3931 * ignored. */ 3932 int space_for_positive = 1; 3933 3934 /* allowed values: \0, h, l, L */ 3935 char length_modifier = '\0'; 3936 3937 /* temporary buffer for simple numeric->string conversion */ 3938 char tmp[32]; 3939 3940 /* string address in case of string argument */ 3941 char *str_arg; 3942 3943 /* natural field width of arg without padding and sign */ 3944 size_t str_arg_l; 3945 3946 /* unsigned char argument value - only defined for c conversion. 3947 * N.B. standard explicitly states the char argument for the c 3948 * conversion is unsigned */ 3949 unsigned char uchar_arg; 3950 3951 /* number of zeros to be inserted for numeric conversions as 3952 * required by the precision or minimal field width */ 3953 size_t number_of_zeros_to_pad = 0; 3954 3955 /* index into tmp where zero padding is to be inserted */ 3956 size_t zero_padding_insertion_ind = 0; 3957 3958 /* current conversion specifier character */ 3959 char fmt_spec = '\0'; 3960 3961 str_arg = NULL; 3962 p++; /* skip '%' */ 3963 3964 /* parse flags */ 3965 while (*p == '0' || *p == '-' || *p == '+' || *p == ' ' 3966 || *p == '#' || *p == '\'') 3967 { 3968 switch (*p) 3969 { 3970 case '0': zero_padding = 1; break; 3971 case '-': justify_left = 1; break; 3972 case '+': force_sign = 1; space_for_positive = 0; break; 3973 case ' ': force_sign = 1; 3974 /* If both the ' ' and '+' flags appear, the ' ' 3975 * flag should be ignored */ 3976 break; 3977 case '#': alternate_form = 1; break; 3978 case '\'': break; 3979 } 3980 p++; 3981 } 3982 /* If the '0' and '-' flags both appear, the '0' flag should be 3983 * ignored. */ 3984 3985 /* parse field width */ 3986 if (*p == '*') 3987 { 3988 int j; 3989 3990 p++; 3991 j = 3992 #ifndef HAVE_STDARG_H 3993 get_a_arg(arg_idx); 3994 #else 3995 # if defined(FEAT_EVAL) 3996 tvs != NULL ? tv_nr(tvs, &arg_idx) : 3997 # endif 3998 va_arg(ap, int); 3999 #endif 4000 if (j >= 0) 4001 min_field_width = j; 4002 else 4003 { 4004 min_field_width = -j; 4005 justify_left = 1; 4006 } 4007 } 4008 else if (VIM_ISDIGIT((int)(*p))) 4009 { 4010 /* size_t could be wider than unsigned int; make sure we treat 4011 * argument like common implementations do */ 4012 unsigned int uj = *p++ - '0'; 4013 4014 while (VIM_ISDIGIT((int)(*p))) 4015 uj = 10 * uj + (unsigned int)(*p++ - '0'); 4016 min_field_width = uj; 4017 } 4018 4019 /* parse precision */ 4020 if (*p == '.') 4021 { 4022 p++; 4023 precision_specified = 1; 4024 if (*p == '*') 4025 { 4026 int j; 4027 4028 j = 4029 #ifndef HAVE_STDARG_H 4030 get_a_arg(arg_idx); 4031 #else 4032 # if defined(FEAT_EVAL) 4033 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4034 # endif 4035 va_arg(ap, int); 4036 #endif 4037 p++; 4038 if (j >= 0) 4039 precision = j; 4040 else 4041 { 4042 precision_specified = 0; 4043 precision = 0; 4044 } 4045 } 4046 else if (VIM_ISDIGIT((int)(*p))) 4047 { 4048 /* size_t could be wider than unsigned int; make sure we 4049 * treat argument like common implementations do */ 4050 unsigned int uj = *p++ - '0'; 4051 4052 while (VIM_ISDIGIT((int)(*p))) 4053 uj = 10 * uj + (unsigned int)(*p++ - '0'); 4054 precision = uj; 4055 } 4056 } 4057 4058 /* parse 'h', 'l' and 'll' length modifiers */ 4059 if (*p == 'h' || *p == 'l') 4060 { 4061 length_modifier = *p; 4062 p++; 4063 if (length_modifier == 'l' && *p == 'l') 4064 { 4065 /* double l = long long */ 4066 length_modifier = 'l'; /* treat it as a single 'l' */ 4067 p++; 4068 } 4069 } 4070 fmt_spec = *p; 4071 4072 /* common synonyms: */ 4073 switch (fmt_spec) 4074 { 4075 case 'i': fmt_spec = 'd'; break; 4076 case 'D': fmt_spec = 'd'; length_modifier = 'l'; break; 4077 case 'U': fmt_spec = 'u'; length_modifier = 'l'; break; 4078 case 'O': fmt_spec = 'o'; length_modifier = 'l'; break; 4079 default: break; 4080 } 4081 4082 /* get parameter value, do initial processing */ 4083 switch (fmt_spec) 4084 { 4085 /* '%' and 'c' behave similar to 's' regarding flags and field 4086 * widths */ 4087 case '%': 4088 case 'c': 4089 case 's': 4090 length_modifier = '\0'; 4091 zero_padding = 0; /* turn zero padding off for string 4092 conversions */ 4093 str_arg_l = 1; 4094 switch (fmt_spec) 4095 { 4096 case '%': 4097 str_arg = p; 4098 break; 4099 4100 case 'c': 4101 { 4102 int j; 4103 4104 j = 4105 #ifndef HAVE_STDARG_H 4106 get_a_arg(arg_idx); 4107 #else 4108 # if defined(FEAT_EVAL) 4109 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4110 # endif 4111 va_arg(ap, int); 4112 #endif 4113 /* standard demands unsigned char */ 4114 uchar_arg = (unsigned char)j; 4115 str_arg = (char *)&uchar_arg; 4116 break; 4117 } 4118 4119 case 's': 4120 str_arg = 4121 #ifndef HAVE_STDARG_H 4122 (char *)get_a_arg(arg_idx); 4123 #else 4124 # if defined(FEAT_EVAL) 4125 tvs != NULL ? tv_str(tvs, &arg_idx) : 4126 # endif 4127 va_arg(ap, char *); 4128 #endif 4129 if (str_arg == NULL) 4130 { 4131 str_arg = "[NULL]"; 4132 str_arg_l = 6; 4133 } 4134 /* make sure not to address string beyond the specified 4135 * precision !!! */ 4136 else if (!precision_specified) 4137 str_arg_l = strlen(str_arg); 4138 /* truncate string if necessary as requested by precision */ 4139 else if (precision == 0) 4140 str_arg_l = 0; 4141 else 4142 { 4143 /* memchr on HP does not like n > 2^31 !!! */ 4144 char *q = memchr(str_arg, '\0', 4145 precision <= 0x7fffffff ? precision 4146 : 0x7fffffff); 4147 str_arg_l = (q == NULL) ? precision : q - str_arg; 4148 } 4149 break; 4150 4151 default: 4152 break; 4153 } 4154 break; 4155 4156 case 'd': case 'u': case 'o': case 'x': case 'X': case 'p': 4157 { 4158 /* NOTE: the u, o, x, X and p conversion specifiers 4159 * imply the value is unsigned; d implies a signed 4160 * value */ 4161 4162 /* 0 if numeric argument is zero (or if pointer is 4163 * NULL for 'p'), +1 if greater than zero (or nonzero 4164 * for unsigned arguments), -1 if negative (unsigned 4165 * argument is never negative) */ 4166 int arg_sign = 0; 4167 4168 /* only defined for length modifier h, or for no 4169 * length modifiers */ 4170 int int_arg = 0; 4171 unsigned int uint_arg = 0; 4172 4173 /* only defined for length modifier l */ 4174 long int long_arg = 0; 4175 unsigned long int ulong_arg = 0; 4176 4177 /* pointer argument value -only defined for p 4178 * conversion */ 4179 void *ptr_arg = NULL; 4180 4181 if (fmt_spec == 'p') 4182 { 4183 length_modifier = '\0'; 4184 ptr_arg = 4185 #ifndef HAVE_STDARG_H 4186 (void *)get_a_arg(arg_idx); 4187 #else 4188 # if defined(FEAT_EVAL) 4189 tvs != NULL ? (void *)tv_str(tvs, &arg_idx) : 4190 # endif 4191 va_arg(ap, void *); 4192 #endif 4193 if (ptr_arg != NULL) 4194 arg_sign = 1; 4195 } 4196 else if (fmt_spec == 'd') 4197 { 4198 /* signed */ 4199 switch (length_modifier) 4200 { 4201 case '\0': 4202 case 'h': 4203 /* char and short arguments are passed as int. */ 4204 int_arg = 4205 #ifndef HAVE_STDARG_H 4206 get_a_arg(arg_idx); 4207 #else 4208 # if defined(FEAT_EVAL) 4209 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4210 # endif 4211 va_arg(ap, int); 4212 #endif 4213 if (int_arg > 0) 4214 arg_sign = 1; 4215 else if (int_arg < 0) 4216 arg_sign = -1; 4217 break; 4218 case 'l': 4219 long_arg = 4220 #ifndef HAVE_STDARG_H 4221 get_a_arg(arg_idx); 4222 #else 4223 # if defined(FEAT_EVAL) 4224 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4225 # endif 4226 va_arg(ap, long int); 4227 #endif 4228 if (long_arg > 0) 4229 arg_sign = 1; 4230 else if (long_arg < 0) 4231 arg_sign = -1; 4232 break; 4233 } 4234 } 4235 else 4236 { 4237 /* unsigned */ 4238 switch (length_modifier) 4239 { 4240 case '\0': 4241 case 'h': 4242 uint_arg = 4243 #ifndef HAVE_STDARG_H 4244 get_a_arg(arg_idx); 4245 #else 4246 # if defined(FEAT_EVAL) 4247 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4248 # endif 4249 va_arg(ap, unsigned int); 4250 #endif 4251 if (uint_arg != 0) 4252 arg_sign = 1; 4253 break; 4254 case 'l': 4255 ulong_arg = 4256 #ifndef HAVE_STDARG_H 4257 get_a_arg(arg_idx); 4258 #else 4259 # if defined(FEAT_EVAL) 4260 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4261 # endif 4262 va_arg(ap, unsigned long int); 4263 #endif 4264 if (ulong_arg != 0) 4265 arg_sign = 1; 4266 break; 4267 } 4268 } 4269 4270 str_arg = tmp; 4271 str_arg_l = 0; 4272 4273 /* NOTE: 4274 * For d, i, u, o, x, and X conversions, if precision is 4275 * specified, the '0' flag should be ignored. This is so 4276 * with Solaris 2.6, Digital UNIX 4.0, HPUX 10, Linux, 4277 * FreeBSD, NetBSD; but not with Perl. 4278 */ 4279 if (precision_specified) 4280 zero_padding = 0; 4281 if (fmt_spec == 'd') 4282 { 4283 if (force_sign && arg_sign >= 0) 4284 tmp[str_arg_l++] = space_for_positive ? ' ' : '+'; 4285 /* leave negative numbers for sprintf to handle, to 4286 * avoid handling tricky cases like (short int)-32768 */ 4287 } 4288 else if (alternate_form) 4289 { 4290 if (arg_sign != 0 4291 && (fmt_spec == 'x' || fmt_spec == 'X') ) 4292 { 4293 tmp[str_arg_l++] = '0'; 4294 tmp[str_arg_l++] = fmt_spec; 4295 } 4296 /* alternate form should have no effect for p 4297 * conversion, but ... */ 4298 } 4299 4300 zero_padding_insertion_ind = str_arg_l; 4301 if (!precision_specified) 4302 precision = 1; /* default precision is 1 */ 4303 if (precision == 0 && arg_sign == 0) 4304 { 4305 /* When zero value is formatted with an explicit 4306 * precision 0, the resulting formatted string is 4307 * empty (d, i, u, o, x, X, p). */ 4308 } 4309 else 4310 { 4311 char f[5]; 4312 int f_l = 0; 4313 4314 /* construct a simple format string for sprintf */ 4315 f[f_l++] = '%'; 4316 if (!length_modifier) 4317 ; 4318 else if (length_modifier == '2') 4319 { 4320 f[f_l++] = 'l'; 4321 f[f_l++] = 'l'; 4322 } 4323 else 4324 f[f_l++] = length_modifier; 4325 f[f_l++] = fmt_spec; 4326 f[f_l++] = '\0'; 4327 4328 if (fmt_spec == 'p') 4329 str_arg_l += sprintf(tmp + str_arg_l, f, ptr_arg); 4330 else if (fmt_spec == 'd') 4331 { 4332 /* signed */ 4333 switch (length_modifier) 4334 { 4335 case '\0': 4336 case 'h': str_arg_l += sprintf( 4337 tmp + str_arg_l, f, int_arg); 4338 break; 4339 case 'l': str_arg_l += sprintf( 4340 tmp + str_arg_l, f, long_arg); 4341 break; 4342 } 4343 } 4344 else 4345 { 4346 /* unsigned */ 4347 switch (length_modifier) 4348 { 4349 case '\0': 4350 case 'h': str_arg_l += sprintf( 4351 tmp + str_arg_l, f, uint_arg); 4352 break; 4353 case 'l': str_arg_l += sprintf( 4354 tmp + str_arg_l, f, ulong_arg); 4355 break; 4356 } 4357 } 4358 4359 /* include the optional minus sign and possible 4360 * "0x" in the region before the zero padding 4361 * insertion point */ 4362 if (zero_padding_insertion_ind < str_arg_l 4363 && tmp[zero_padding_insertion_ind] == '-') 4364 zero_padding_insertion_ind++; 4365 if (zero_padding_insertion_ind + 1 < str_arg_l 4366 && tmp[zero_padding_insertion_ind] == '0' 4367 && (tmp[zero_padding_insertion_ind + 1] == 'x' 4368 || tmp[zero_padding_insertion_ind + 1] == 'X')) 4369 zero_padding_insertion_ind += 2; 4370 } 4371 4372 { 4373 size_t num_of_digits = str_arg_l 4374 - zero_padding_insertion_ind; 4375 4376 if (alternate_form && fmt_spec == 'o' 4377 /* unless zero is already the first 4378 * character */ 4379 && !(zero_padding_insertion_ind < str_arg_l 4380 && tmp[zero_padding_insertion_ind] == '0')) 4381 { 4382 /* assure leading zero for alternate-form 4383 * octal numbers */ 4384 if (!precision_specified 4385 || precision < num_of_digits + 1) 4386 { 4387 /* precision is increased to force the 4388 * first character to be zero, except if a 4389 * zero value is formatted with an 4390 * explicit precision of zero */ 4391 precision = num_of_digits + 1; 4392 precision_specified = 1; 4393 } 4394 } 4395 /* zero padding to specified precision? */ 4396 if (num_of_digits < precision) 4397 number_of_zeros_to_pad = precision - num_of_digits; 4398 } 4399 /* zero padding to specified minimal field width? */ 4400 if (!justify_left && zero_padding) 4401 { 4402 int n = min_field_width - (str_arg_l 4403 + number_of_zeros_to_pad); 4404 if (n > 0) 4405 number_of_zeros_to_pad += n; 4406 } 4407 break; 4408 } 4409 4410 default: 4411 /* unrecognized conversion specifier, keep format string 4412 * as-is */ 4413 zero_padding = 0; /* turn zero padding off for non-numeric 4414 convers. */ 4415 justify_left = 1; 4416 min_field_width = 0; /* reset flags */ 4417 4418 /* discard the unrecognized conversion, just keep * 4419 * the unrecognized conversion character */ 4420 str_arg = p; 4421 str_arg_l = 0; 4422 if (*p != NUL) 4423 str_arg_l++; /* include invalid conversion specifier 4424 unchanged if not at end-of-string */ 4425 break; 4426 } 4427 4428 if (*p != NUL) 4429 p++; /* step over the just processed conversion specifier */ 4430 4431 /* insert padding to the left as requested by min_field_width; 4432 * this does not include the zero padding in case of numerical 4433 * conversions*/ 4434 if (!justify_left) 4435 { 4436 /* left padding with blank or zero */ 4437 int pn = min_field_width - (str_arg_l + number_of_zeros_to_pad); 4438 4439 if (pn > 0) 4440 { 4441 if (str_l < str_m) 4442 { 4443 size_t avail = str_m - str_l; 4444 4445 vim_memset(str + str_l, zero_padding ? '0' : ' ', 4446 (size_t)pn > avail ? avail : pn); 4447 } 4448 str_l += pn; 4449 } 4450 } 4451 4452 /* zero padding as requested by the precision or by the minimal 4453 * field width for numeric conversions required? */ 4454 if (number_of_zeros_to_pad == 0) 4455 { 4456 /* will not copy first part of numeric right now, * 4457 * force it to be copied later in its entirety */ 4458 zero_padding_insertion_ind = 0; 4459 } 4460 else 4461 { 4462 /* insert first part of numerics (sign or '0x') before zero 4463 * padding */ 4464 int zn = zero_padding_insertion_ind; 4465 4466 if (zn > 0) 4467 { 4468 if (str_l < str_m) 4469 { 4470 size_t avail = str_m - str_l; 4471 4472 mch_memmove(str + str_l, str_arg, 4473 (size_t)zn > avail ? avail : zn); 4474 } 4475 str_l += zn; 4476 } 4477 4478 /* insert zero padding as requested by the precision or min 4479 * field width */ 4480 zn = number_of_zeros_to_pad; 4481 if (zn > 0) 4482 { 4483 if (str_l < str_m) 4484 { 4485 size_t avail = str_m-str_l; 4486 4487 vim_memset(str + str_l, '0', 4488 (size_t)zn > avail ? avail : zn); 4489 } 4490 str_l += zn; 4491 } 4492 } 4493 4494 /* insert formatted string 4495 * (or as-is conversion specifier for unknown conversions) */ 4496 { 4497 int sn = str_arg_l - zero_padding_insertion_ind; 4498 4499 if (sn > 0) 4500 { 4501 if (str_l < str_m) 4502 { 4503 size_t avail = str_m - str_l; 4504 4505 mch_memmove(str + str_l, 4506 str_arg + zero_padding_insertion_ind, 4507 (size_t)sn > avail ? avail : sn); 4508 } 4509 str_l += sn; 4510 } 4511 } 4512 4513 /* insert right padding */ 4514 if (justify_left) 4515 { 4516 /* right blank padding to the field width */ 4517 int pn = min_field_width - (str_arg_l + number_of_zeros_to_pad); 4518 4519 if (pn > 0) 4520 { 4521 if (str_l < str_m) 4522 { 4523 size_t avail = str_m - str_l; 4524 4525 vim_memset(str + str_l, ' ', 4526 (size_t)pn > avail ? avail : pn); 4527 } 4528 str_l += pn; 4529 } 4530 } 4531 } 4532 } 4533 4534 if (str_m > 0) 4535 { 4536 /* make sure the string is nul-terminated even at the expense of 4537 * overwriting the last character (shouldn't happen, but just in case) 4538 * */ 4539 str[str_l <= str_m - 1 ? str_l : str_m - 1] = '\0'; 4540 } 4541 4542 #ifdef HAVE_STDARG_H 4543 if (tvs != NULL && tvs[arg_idx - 1].v_type != VAR_UNKNOWN) 4544 EMSG(_("E767: Too many arguments to printf()")); 4545 #endif 4546 4547 /* Return the number of characters formatted (excluding trailing nul 4548 * character), that is, the number of characters that would have been 4549 * written to the buffer if it were large enough. */ 4550 return (int)str_l; 4551 } 4552 4553 #endif /* PROTO */ 4554