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 #if defined(FEAT_FLOAT) && defined(HAVE_MATH_H) 19 # include <math.h> 20 #endif 21 22 static int other_sourcing_name __ARGS((void)); 23 static char_u *get_emsg_source __ARGS((void)); 24 static char_u *get_emsg_lnum __ARGS((void)); 25 static void add_msg_hist __ARGS((char_u *s, int len, int attr)); 26 static void hit_return_msg __ARGS((void)); 27 static void msg_home_replace_attr __ARGS((char_u *fname, int attr)); 28 #ifdef FEAT_MBYTE 29 static char_u *screen_puts_mbyte __ARGS((char_u *s, int l, int attr)); 30 #endif 31 static void msg_puts_attr_len __ARGS((char_u *str, int maxlen, int attr)); 32 static void msg_puts_display __ARGS((char_u *str, int maxlen, int attr, int recurse)); 33 static void msg_scroll_up __ARGS((void)); 34 static void inc_msg_scrolled __ARGS((void)); 35 static void store_sb_text __ARGS((char_u **sb_str, char_u *s, int attr, int *sb_col, int finish)); 36 static void t_puts __ARGS((int *t_col, char_u *t_s, char_u *s, int attr)); 37 static void msg_puts_printf __ARGS((char_u *str, int maxlen)); 38 static int do_more_prompt __ARGS((int typed_char)); 39 static void msg_screen_putchar __ARGS((int c, int attr)); 40 static int msg_check_screen __ARGS((void)); 41 static void redir_write __ARGS((char_u *s, int maxlen)); 42 static void verbose_write __ARGS((char_u *s, int maxlen)); 43 #ifdef FEAT_CON_DIALOG 44 static char_u *msg_show_console_dialog __ARGS((char_u *message, char_u *buttons, int dfltbutton)); 45 static int confirm_msg_used = FALSE; /* displaying confirm_msg */ 46 static char_u *confirm_msg = NULL; /* ":confirm" message */ 47 static char_u *confirm_msg_tail; /* tail of confirm_msg */ 48 #endif 49 50 struct msg_hist 51 { 52 struct msg_hist *next; 53 char_u *msg; 54 int attr; 55 }; 56 57 static struct msg_hist *first_msg_hist = NULL; 58 static struct msg_hist *last_msg_hist = NULL; 59 static int msg_hist_len = 0; 60 61 /* 62 * When writing messages to the screen, there are many different situations. 63 * A number of variables is used to remember the current state: 64 * msg_didany TRUE when messages were written since the last time the 65 * user reacted to a prompt. 66 * Reset: After hitting a key for the hit-return prompt, 67 * hitting <CR> for the command line or input(). 68 * Set: When any message is written to the screen. 69 * msg_didout TRUE when something was written to the current line. 70 * Reset: When advancing to the next line, when the current 71 * text can be overwritten. 72 * Set: When any message is written to the screen. 73 * msg_nowait No extra delay for the last drawn message. 74 * Used in normal_cmd() before the mode message is drawn. 75 * emsg_on_display There was an error message recently. Indicates that there 76 * should be a delay before redrawing. 77 * msg_scroll The next message should not overwrite the current one. 78 * msg_scrolled How many lines the screen has been scrolled (because of 79 * messages). Used in update_screen() to scroll the screen 80 * back. Incremented each time the screen scrolls a line. 81 * msg_scrolled_ign TRUE when msg_scrolled is non-zero and msg_puts_attr() 82 * writes something without scrolling should not make 83 * need_wait_return to be set. This is a hack to make ":ts" 84 * work without an extra prompt. 85 * lines_left Number of lines available for messages before the 86 * more-prompt is to be given. 87 * need_wait_return TRUE when the hit-return prompt is needed. 88 * Reset: After giving the hit-return prompt, when the user 89 * has answered some other prompt. 90 * Set: When the ruler or typeahead display is overwritten, 91 * scrolling the screen for some message. 92 * keep_msg Message to be displayed after redrawing the screen, in 93 * main_loop(). 94 * This is an allocated string or NULL when not used. 95 */ 96 97 /* 98 * msg(s) - displays the string 's' on the status line 99 * When terminal not initialized (yet) mch_errmsg(..) is used. 100 * return TRUE if wait_return not called 101 */ 102 int 103 msg(s) 104 char_u *s; 105 { 106 return msg_attr_keep(s, 0, FALSE); 107 } 108 109 #if defined(FEAT_EVAL) || defined(FEAT_X11) || defined(USE_XSMP) \ 110 || defined(PROTO) 111 /* 112 * Like msg() but keep it silent when 'verbosefile' is set. 113 */ 114 int 115 verb_msg(s) 116 char_u *s; 117 { 118 int n; 119 120 verbose_enter(); 121 n = msg_attr_keep(s, 0, FALSE); 122 verbose_leave(); 123 124 return n; 125 } 126 #endif 127 128 int 129 msg_attr(s, attr) 130 char_u *s; 131 int attr; 132 { 133 return msg_attr_keep(s, attr, FALSE); 134 } 135 136 int 137 msg_attr_keep(s, attr, keep) 138 char_u *s; 139 int attr; 140 int keep; /* TRUE: set keep_msg if it doesn't scroll */ 141 { 142 static int entered = 0; 143 int retval; 144 char_u *buf = NULL; 145 146 #ifdef FEAT_EVAL 147 if (attr == 0) 148 set_vim_var_string(VV_STATUSMSG, s, -1); 149 #endif 150 151 /* 152 * It is possible that displaying a messages causes a problem (e.g., 153 * when redrawing the window), which causes another message, etc.. To 154 * break this loop, limit the recursiveness to 3 levels. 155 */ 156 if (entered >= 3) 157 return TRUE; 158 ++entered; 159 160 /* Add message to history (unless it's a repeated kept message or a 161 * truncated message) */ 162 if (s != keep_msg 163 || (*s != '<' 164 && last_msg_hist != NULL 165 && last_msg_hist->msg != NULL 166 && STRCMP(s, last_msg_hist->msg))) 167 add_msg_hist(s, -1, attr); 168 169 /* When displaying keep_msg, don't let msg_start() free it, caller must do 170 * that. */ 171 if (s == keep_msg) 172 keep_msg = NULL; 173 174 /* Truncate the message if needed. */ 175 msg_start(); 176 buf = msg_strtrunc(s, FALSE); 177 if (buf != NULL) 178 s = buf; 179 180 msg_outtrans_attr(s, attr); 181 msg_clr_eos(); 182 retval = msg_end(); 183 184 if (keep && retval && vim_strsize(s) < (int)(Rows - cmdline_row - 1) 185 * Columns + sc_col) 186 set_keep_msg(s, 0); 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 half = i = (int)STRLEN(s); 300 for (;;) 301 { 302 do 303 half = half - (*mb_head_off)(s, s + half - 1) - 1; 304 while (utf_iscomposing(utf_ptr2char(s + half)) && half > 0); 305 n = ptr2cells(s + half); 306 if (len + n > room) 307 break; 308 len += n; 309 i = half; 310 } 311 } 312 else 313 #endif 314 { 315 for (i = (int)STRLEN(s); len + (n = ptr2cells(s + i - 1)) <= room; --i) 316 len += n; 317 } 318 319 /* Set the middle and copy the last part. */ 320 mch_memmove(buf + e, "...", (size_t)3); 321 STRMOVE(buf + e + 3, s + i); 322 } 323 324 /* 325 * Automatic prototype generation does not understand this function. 326 * Note: Caller of smgs() and smsg_attr() must check the resulting string is 327 * shorter than IOSIZE!!! 328 */ 329 #ifndef PROTO 330 # ifndef HAVE_STDARG_H 331 332 int 333 #ifdef __BORLANDC__ 334 _RTLENTRYF 335 #endif 336 smsg __ARGS((char_u *, long, long, long, 337 long, long, long, long, long, long, long)); 338 int 339 #ifdef __BORLANDC__ 340 _RTLENTRYF 341 #endif 342 smsg_attr __ARGS((int, char_u *, long, long, long, 343 long, long, long, long, long, long, long)); 344 345 int vim_snprintf __ARGS((char *, size_t, char *, long, long, long, 346 long, long, long, long, long, long, long)); 347 348 /* 349 * smsg(str, arg, ...) is like using sprintf(buf, str, arg, ...) and then 350 * calling msg(buf). 351 * The buffer used is IObuff, the message is truncated at IOSIZE. 352 */ 353 354 /* VARARGS */ 355 int 356 #ifdef __BORLANDC__ 357 _RTLENTRYF 358 #endif 359 smsg(s, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) 360 char_u *s; 361 long a1, a2, a3, a4, a5, a6, a7, a8, a9, a10; 362 { 363 return smsg_attr(0, s, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10); 364 } 365 366 /* VARARGS */ 367 int 368 #ifdef __BORLANDC__ 369 _RTLENTRYF 370 #endif 371 smsg_attr(attr, s, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) 372 int attr; 373 char_u *s; 374 long a1, a2, a3, a4, a5, a6, a7, a8, a9, a10; 375 { 376 vim_snprintf((char *)IObuff, IOSIZE, (char *)s, 377 a1, a2, a3, a4, a5, a6, a7, a8, a9, a10); 378 return msg_attr(IObuff, attr); 379 } 380 381 # else /* HAVE_STDARG_H */ 382 383 int vim_snprintf(char *str, size_t str_m, char *fmt, ...); 384 385 int 386 #ifdef __BORLANDC__ 387 _RTLENTRYF 388 #endif 389 smsg(char_u *s, ...) 390 { 391 va_list arglist; 392 393 va_start(arglist, s); 394 vim_vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist, NULL); 395 va_end(arglist); 396 return msg(IObuff); 397 } 398 399 int 400 #ifdef __BORLANDC__ 401 _RTLENTRYF 402 #endif 403 smsg_attr(int attr, char_u *s, ...) 404 { 405 va_list arglist; 406 407 va_start(arglist, s); 408 vim_vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist, NULL); 409 va_end(arglist); 410 return msg_attr(IObuff, attr); 411 } 412 413 # endif /* HAVE_STDARG_H */ 414 #endif 415 416 /* 417 * Remember the last sourcing name/lnum used in an error message, so that it 418 * isn't printed each time when it didn't change. 419 */ 420 static int last_sourcing_lnum = 0; 421 static char_u *last_sourcing_name = NULL; 422 423 /* 424 * Reset the last used sourcing name/lnum. Makes sure it is displayed again 425 * for the next error message; 426 */ 427 void 428 reset_last_sourcing() 429 { 430 vim_free(last_sourcing_name); 431 last_sourcing_name = NULL; 432 last_sourcing_lnum = 0; 433 } 434 435 /* 436 * Return TRUE if "sourcing_name" differs from "last_sourcing_name". 437 */ 438 static int 439 other_sourcing_name() 440 { 441 if (sourcing_name != NULL) 442 { 443 if (last_sourcing_name != NULL) 444 return STRCMP(sourcing_name, last_sourcing_name) != 0; 445 return TRUE; 446 } 447 return FALSE; 448 } 449 450 /* 451 * Get the message about the source, as used for an error message. 452 * Returns an allocated string with room for one more character. 453 * Returns NULL when no message is to be given. 454 */ 455 static char_u * 456 get_emsg_source() 457 { 458 char_u *Buf, *p; 459 460 if (sourcing_name != NULL && other_sourcing_name()) 461 { 462 p = (char_u *)_("Error detected while processing %s:"); 463 Buf = alloc((unsigned)(STRLEN(sourcing_name) + STRLEN(p))); 464 if (Buf != NULL) 465 sprintf((char *)Buf, (char *)p, sourcing_name); 466 return Buf; 467 } 468 return NULL; 469 } 470 471 /* 472 * Get the message about the source lnum, as used for an error message. 473 * Returns an allocated string with room for one more character. 474 * Returns NULL when no message is to be given. 475 */ 476 static char_u * 477 get_emsg_lnum() 478 { 479 char_u *Buf, *p; 480 481 /* lnum is 0 when executing a command from the command line 482 * argument, we don't want a line number then */ 483 if (sourcing_name != NULL 484 && (other_sourcing_name() || sourcing_lnum != last_sourcing_lnum) 485 && sourcing_lnum != 0) 486 { 487 p = (char_u *)_("line %4ld:"); 488 Buf = alloc((unsigned)(STRLEN(p) + 20)); 489 if (Buf != NULL) 490 sprintf((char *)Buf, (char *)p, (long)sourcing_lnum); 491 return Buf; 492 } 493 return NULL; 494 } 495 496 /* 497 * Display name and line number for the source of an error. 498 * Remember the file name and line number, so that for the next error the info 499 * is only displayed if it changed. 500 */ 501 void 502 msg_source(attr) 503 int attr; 504 { 505 char_u *p; 506 507 ++no_wait_return; 508 p = get_emsg_source(); 509 if (p != NULL) 510 { 511 msg_attr(p, attr); 512 vim_free(p); 513 } 514 p = get_emsg_lnum(); 515 if (p != NULL) 516 { 517 msg_attr(p, hl_attr(HLF_N)); 518 vim_free(p); 519 last_sourcing_lnum = sourcing_lnum; /* only once for each line */ 520 } 521 522 /* remember the last sourcing name printed, also when it's empty */ 523 if (sourcing_name == NULL || other_sourcing_name()) 524 { 525 vim_free(last_sourcing_name); 526 if (sourcing_name == NULL) 527 last_sourcing_name = NULL; 528 else 529 last_sourcing_name = vim_strsave(sourcing_name); 530 } 531 --no_wait_return; 532 } 533 534 /* 535 * Return TRUE if not giving error messages right now: 536 * If "emsg_off" is set: no error messages at the moment. 537 * If "msg" is in 'debug': do error message but without side effects. 538 * If "emsg_skip" is set: never do error messages. 539 */ 540 int 541 emsg_not_now() 542 { 543 if ((emsg_off > 0 && vim_strchr(p_debug, 'm') == NULL 544 && vim_strchr(p_debug, 't') == NULL) 545 #ifdef FEAT_EVAL 546 || emsg_skip > 0 547 #endif 548 ) 549 return TRUE; 550 return FALSE; 551 } 552 553 /* 554 * emsg() - display an error message 555 * 556 * Rings the bell, if appropriate, and calls message() to do the real work 557 * When terminal not initialized (yet) mch_errmsg(..) is used. 558 * 559 * return TRUE if wait_return not called 560 */ 561 int 562 emsg(s) 563 char_u *s; 564 { 565 int attr; 566 char_u *p; 567 #ifdef FEAT_EVAL 568 int ignore = FALSE; 569 int severe; 570 #endif 571 572 called_emsg = TRUE; 573 ex_exitval = 1; 574 575 /* 576 * If "emsg_severe" is TRUE: When an error exception is to be thrown, 577 * prefer this message over previous messages for the same command. 578 */ 579 #ifdef FEAT_EVAL 580 severe = emsg_severe; 581 emsg_severe = FALSE; 582 #endif 583 584 /* Skip this if not giving error messages at the moment. */ 585 if (emsg_not_now()) 586 return TRUE; 587 588 if (!emsg_off || vim_strchr(p_debug, 't') != NULL) 589 { 590 #ifdef FEAT_EVAL 591 /* 592 * Cause a throw of an error exception if appropriate. Don't display 593 * the error message in this case. (If no matching catch clause will 594 * be found, the message will be displayed later on.) "ignore" is set 595 * when the message should be ignored completely (used for the 596 * interrupt message). 597 */ 598 if (cause_errthrow(s, severe, &ignore) == TRUE) 599 { 600 if (!ignore) 601 did_emsg = TRUE; 602 return TRUE; 603 } 604 605 /* set "v:errmsg", also when using ":silent! cmd" */ 606 set_vim_var_string(VV_ERRMSG, s, -1); 607 #endif 608 609 /* 610 * When using ":silent! cmd" ignore error messages. 611 * But do write it to the redirection file. 612 */ 613 if (emsg_silent != 0) 614 { 615 msg_start(); 616 p = get_emsg_source(); 617 if (p != NULL) 618 { 619 STRCAT(p, "\n"); 620 redir_write(p, -1); 621 vim_free(p); 622 } 623 p = get_emsg_lnum(); 624 if (p != NULL) 625 { 626 STRCAT(p, "\n"); 627 redir_write(p, -1); 628 vim_free(p); 629 } 630 redir_write(s, -1); 631 return TRUE; 632 } 633 634 /* Reset msg_silent, an error causes messages to be switched back on. */ 635 msg_silent = 0; 636 cmd_silent = FALSE; 637 638 if (global_busy) /* break :global command */ 639 ++global_busy; 640 641 if (p_eb) 642 beep_flush(); /* also includes flush_buffers() */ 643 else 644 flush_buffers(FALSE); /* flush internal buffers */ 645 did_emsg = TRUE; /* flag for DoOneCmd() */ 646 } 647 648 emsg_on_display = TRUE; /* remember there is an error message */ 649 ++msg_scroll; /* don't overwrite a previous message */ 650 attr = hl_attr(HLF_E); /* set highlight mode for error messages */ 651 if (msg_scrolled != 0) 652 need_wait_return = TRUE; /* needed in case emsg() is called after 653 * wait_return has reset need_wait_return 654 * and a redraw is expected because 655 * msg_scrolled is non-zero */ 656 657 /* 658 * Display name and line number for the source of the error. 659 */ 660 msg_source(attr); 661 662 /* 663 * Display the error message itself. 664 */ 665 msg_nowait = FALSE; /* wait for this msg */ 666 return msg_attr(s, attr); 667 } 668 669 /* 670 * Print an error message with one "%s" and one string argument. 671 */ 672 int 673 emsg2(s, a1) 674 char_u *s, *a1; 675 { 676 return emsg3(s, a1, NULL); 677 } 678 679 /* emsg3() and emsgn() are in misc2.c to avoid warnings for the prototypes. */ 680 681 void 682 emsg_invreg(name) 683 int name; 684 { 685 EMSG2(_("E354: Invalid register name: '%s'"), transchar(name)); 686 } 687 688 /* 689 * Like msg(), but truncate to a single line if p_shm contains 't', or when 690 * "force" is TRUE. This truncates in another way as for normal messages. 691 * Careful: The string may be changed by msg_may_trunc()! 692 * Returns a pointer to the printed message, if wait_return() not called. 693 */ 694 char_u * 695 msg_trunc_attr(s, force, attr) 696 char_u *s; 697 int force; 698 int attr; 699 { 700 int n; 701 702 /* Add message to history before truncating */ 703 add_msg_hist(s, -1, attr); 704 705 s = msg_may_trunc(force, s); 706 707 msg_hist_off = TRUE; 708 n = msg_attr(s, attr); 709 msg_hist_off = FALSE; 710 711 if (n) 712 return s; 713 return NULL; 714 } 715 716 /* 717 * Check if message "s" should be truncated at the start (for filenames). 718 * Return a pointer to where the truncated message starts. 719 * Note: May change the message by replacing a character with '<'. 720 */ 721 char_u * 722 msg_may_trunc(force, s) 723 int force; 724 char_u *s; 725 { 726 int n; 727 int room; 728 729 room = (int)(Rows - cmdline_row - 1) * Columns + sc_col - 1; 730 if ((force || (shortmess(SHM_TRUNC) && !exmode_active)) 731 && (n = (int)STRLEN(s) - room) > 0) 732 { 733 #ifdef FEAT_MBYTE 734 if (has_mbyte) 735 { 736 int size = vim_strsize(s); 737 738 /* There may be room anyway when there are multibyte chars. */ 739 if (size <= room) 740 return s; 741 742 for (n = 0; size >= room; ) 743 { 744 size -= (*mb_ptr2cells)(s + n); 745 n += (*mb_ptr2len)(s + n); 746 } 747 --n; 748 } 749 #endif 750 s += n; 751 *s = '<'; 752 } 753 return s; 754 } 755 756 static void 757 add_msg_hist(s, len, attr) 758 char_u *s; 759 int len; /* -1 for undetermined length */ 760 int attr; 761 { 762 struct msg_hist *p; 763 764 if (msg_hist_off || msg_silent != 0) 765 return; 766 767 /* Don't let the message history get too big */ 768 while (msg_hist_len > MAX_MSG_HIST_LEN) 769 (void)delete_first_msg(); 770 771 /* allocate an entry and add the message at the end of the history */ 772 p = (struct msg_hist *)alloc((int)sizeof(struct msg_hist)); 773 if (p != NULL) 774 { 775 if (len < 0) 776 len = (int)STRLEN(s); 777 /* remove leading and trailing newlines */ 778 while (len > 0 && *s == '\n') 779 { 780 ++s; 781 --len; 782 } 783 while (len > 0 && s[len - 1] == '\n') 784 --len; 785 p->msg = vim_strnsave(s, len); 786 p->next = NULL; 787 p->attr = attr; 788 if (last_msg_hist != NULL) 789 last_msg_hist->next = p; 790 last_msg_hist = p; 791 if (first_msg_hist == NULL) 792 first_msg_hist = last_msg_hist; 793 ++msg_hist_len; 794 } 795 } 796 797 /* 798 * Delete the first (oldest) message from the history. 799 * Returns FAIL if there are no messages. 800 */ 801 int 802 delete_first_msg() 803 { 804 struct msg_hist *p; 805 806 if (msg_hist_len <= 0) 807 return FAIL; 808 p = first_msg_hist; 809 first_msg_hist = p->next; 810 if (first_msg_hist == NULL) 811 last_msg_hist = NULL; /* history is empty */ 812 vim_free(p->msg); 813 vim_free(p); 814 --msg_hist_len; 815 return OK; 816 } 817 818 /* 819 * ":messages" command. 820 */ 821 /*ARGSUSED*/ 822 void 823 ex_messages(eap) 824 exarg_T *eap; 825 { 826 struct msg_hist *p; 827 char_u *s; 828 829 msg_hist_off = TRUE; 830 831 s = mch_getenv((char_u *)"LANG"); 832 if (s != NULL && *s != NUL) 833 msg_attr((char_u *) 834 _("Messages maintainer: Bram Moolenaar <[email protected]>"), 835 hl_attr(HLF_T)); 836 837 for (p = first_msg_hist; p != NULL && !got_int; p = p->next) 838 if (p->msg != NULL) 839 msg_attr(p->msg, p->attr); 840 841 msg_hist_off = FALSE; 842 } 843 844 #if defined(FEAT_CON_DIALOG) || defined(FIND_REPLACE_DIALOG) || defined(PROTO) 845 /* 846 * Call this after prompting the user. This will avoid a hit-return message 847 * and a delay. 848 */ 849 void 850 msg_end_prompt() 851 { 852 need_wait_return = FALSE; 853 emsg_on_display = FALSE; 854 cmdline_row = msg_row; 855 msg_col = 0; 856 msg_clr_eos(); 857 } 858 #endif 859 860 /* 861 * wait for the user to hit a key (normally a return) 862 * if 'redraw' is TRUE, clear and redraw the screen 863 * if 'redraw' is FALSE, just redraw the screen 864 * if 'redraw' is -1, don't redraw at all 865 */ 866 void 867 wait_return(redraw) 868 int redraw; 869 { 870 int c; 871 int oldState; 872 int tmpState; 873 int had_got_int; 874 875 if (redraw == TRUE) 876 must_redraw = CLEAR; 877 878 /* If using ":silent cmd", don't wait for a return. Also don't set 879 * need_wait_return to do it later. */ 880 if (msg_silent != 0) 881 return; 882 883 /* 884 * With the global command (and some others) we only need one return at the 885 * end. Adjust cmdline_row to avoid the next message overwriting the last one. 886 * When inside vgetc(), we can't wait for a typed character at all. 887 */ 888 if (vgetc_busy > 0) 889 return; 890 if (no_wait_return) 891 { 892 need_wait_return = TRUE; 893 if (!exmode_active) 894 cmdline_row = msg_row; 895 return; 896 } 897 898 redir_off = TRUE; /* don't redirect this message */ 899 oldState = State; 900 if (quit_more) 901 { 902 c = CAR; /* just pretend CR was hit */ 903 quit_more = FALSE; 904 got_int = FALSE; 905 } 906 else if (exmode_active) 907 { 908 MSG_PUTS(" "); /* make sure the cursor is on the right line */ 909 c = CAR; /* no need for a return in ex mode */ 910 got_int = FALSE; 911 } 912 else 913 { 914 /* Make sure the hit-return prompt is on screen when 'guioptions' was 915 * just changed. */ 916 screenalloc(FALSE); 917 918 State = HITRETURN; 919 #ifdef FEAT_MOUSE 920 setmouse(); 921 #endif 922 #ifdef USE_ON_FLY_SCROLL 923 dont_scroll = TRUE; /* disallow scrolling here */ 924 #endif 925 hit_return_msg(); 926 927 do 928 { 929 /* Remember "got_int", if it is set vgetc() probably returns a 930 * CTRL-C, but we need to loop then. */ 931 had_got_int = got_int; 932 933 /* Don't do mappings here, we put the character back in the 934 * typeahead buffer. */ 935 ++no_mapping; 936 ++allow_keys; 937 c = safe_vgetc(); 938 if (had_got_int && !global_busy) 939 got_int = FALSE; 940 --no_mapping; 941 --allow_keys; 942 943 #ifdef FEAT_CLIPBOARD 944 /* Strange way to allow copying (yanking) a modeless selection at 945 * the hit-enter prompt. Use CTRL-Y, because the same is used in 946 * Cmdline-mode and it's harmless when there is no selection. */ 947 if (c == Ctrl_Y && clip_star.state == SELECT_DONE) 948 { 949 clip_copy_modeless_selection(TRUE); 950 c = K_IGNORE; 951 } 952 #endif 953 954 /* 955 * Allow scrolling back in the messages. 956 * Also accept scroll-down commands when messages fill the screen, 957 * to avoid that typing one 'j' too many makes the messages 958 * disappear. 959 */ 960 if (p_more && !p_cp) 961 { 962 if (c == 'b' || c == 'k' || c == 'u' || c == 'g' || c == K_UP) 963 { 964 /* scroll back to show older messages */ 965 do_more_prompt(c); 966 if (quit_more) 967 { 968 c = CAR; /* just pretend CR was hit */ 969 quit_more = FALSE; 970 got_int = FALSE; 971 } 972 else 973 { 974 c = K_IGNORE; 975 hit_return_msg(); 976 } 977 } 978 else if (msg_scrolled > Rows - 2 979 && (c == 'j' || c == K_DOWN || c == 'd')) 980 c = K_IGNORE; 981 } 982 } while ((had_got_int && c == Ctrl_C) 983 || c == K_IGNORE 984 #ifdef FEAT_GUI 985 || c == K_VER_SCROLLBAR || c == K_HOR_SCROLLBAR 986 #endif 987 #ifdef FEAT_MOUSE 988 || c == K_LEFTDRAG || c == K_LEFTRELEASE 989 || c == K_MIDDLEDRAG || c == K_MIDDLERELEASE 990 || c == K_RIGHTDRAG || c == K_RIGHTRELEASE 991 || c == K_MOUSEDOWN || c == K_MOUSEUP 992 || (!mouse_has(MOUSE_RETURN) 993 && mouse_row < msg_row 994 && (c == K_LEFTMOUSE 995 || c == K_MIDDLEMOUSE 996 || c == K_RIGHTMOUSE 997 || c == K_X1MOUSE 998 || c == K_X2MOUSE)) 999 #endif 1000 ); 1001 ui_breakcheck(); 1002 #ifdef FEAT_MOUSE 1003 /* 1004 * Avoid that the mouse-up event causes visual mode to start. 1005 */ 1006 if (c == K_LEFTMOUSE || c == K_MIDDLEMOUSE || c == K_RIGHTMOUSE 1007 || c == K_X1MOUSE || c == K_X2MOUSE) 1008 (void)jump_to_mouse(MOUSE_SETPOS, NULL, 0); 1009 else 1010 #endif 1011 if (vim_strchr((char_u *)"\r\n ", c) == NULL && c != Ctrl_C) 1012 { 1013 /* Put the character back in the typeahead buffer. Don't use the 1014 * stuff buffer, because lmaps wouldn't work. */ 1015 ins_char_typebuf(c); 1016 do_redraw = TRUE; /* need a redraw even though there is 1017 typeahead */ 1018 } 1019 } 1020 redir_off = FALSE; 1021 1022 /* 1023 * If the user hits ':', '?' or '/' we get a command line from the next 1024 * line. 1025 */ 1026 if (c == ':' || c == '?' || c == '/') 1027 { 1028 if (!exmode_active) 1029 cmdline_row = msg_row; 1030 skip_redraw = TRUE; /* skip redraw once */ 1031 do_redraw = FALSE; 1032 } 1033 1034 /* 1035 * If the window size changed set_shellsize() will redraw the screen. 1036 * Otherwise the screen is only redrawn if 'redraw' is set and no ':' 1037 * typed. 1038 */ 1039 tmpState = State; 1040 State = oldState; /* restore State before set_shellsize */ 1041 #ifdef FEAT_MOUSE 1042 setmouse(); 1043 #endif 1044 msg_check(); 1045 1046 #if defined(UNIX) || defined(VMS) 1047 /* 1048 * When switching screens, we need to output an extra newline on exit. 1049 */ 1050 if (swapping_screen() && !termcap_active) 1051 newline_on_exit = TRUE; 1052 #endif 1053 1054 need_wait_return = FALSE; 1055 did_wait_return = TRUE; 1056 emsg_on_display = FALSE; /* can delete error message now */ 1057 lines_left = -1; /* reset lines_left at next msg_start() */ 1058 reset_last_sourcing(); 1059 if (keep_msg != NULL && vim_strsize(keep_msg) >= 1060 (Rows - cmdline_row - 1) * Columns + sc_col) 1061 { 1062 vim_free(keep_msg); 1063 keep_msg = NULL; /* don't redisplay message, it's too long */ 1064 } 1065 1066 if (tmpState == SETWSIZE) /* got resize event while in vgetc() */ 1067 { 1068 starttermcap(); /* start termcap before redrawing */ 1069 shell_resized(); 1070 } 1071 else if (!skip_redraw 1072 && (redraw == TRUE || (msg_scrolled != 0 && redraw != -1))) 1073 { 1074 starttermcap(); /* start termcap before redrawing */ 1075 redraw_later(VALID); 1076 } 1077 } 1078 1079 /* 1080 * Write the hit-return prompt. 1081 */ 1082 static void 1083 hit_return_msg() 1084 { 1085 int save_p_more = p_more; 1086 1087 p_more = FALSE; /* don't want see this message when scrolling back */ 1088 if (msg_didout) /* start on a new line */ 1089 msg_putchar('\n'); 1090 if (got_int) 1091 MSG_PUTS(_("Interrupt: ")); 1092 1093 MSG_PUTS_ATTR(_("Press ENTER or type command to continue"), hl_attr(HLF_R)); 1094 if (!msg_use_printf()) 1095 msg_clr_eos(); 1096 p_more = save_p_more; 1097 } 1098 1099 /* 1100 * Set "keep_msg" to "s". Free the old value and check for NULL pointer. 1101 */ 1102 void 1103 set_keep_msg(s, attr) 1104 char_u *s; 1105 int attr; 1106 { 1107 vim_free(keep_msg); 1108 if (s != NULL && msg_silent == 0) 1109 keep_msg = vim_strsave(s); 1110 else 1111 keep_msg = NULL; 1112 keep_msg_more = FALSE; 1113 keep_msg_attr = attr; 1114 } 1115 1116 #if defined(FEAT_TERMRESPONSE) || defined(PROTO) 1117 /* 1118 * If there currently is a message being displayed, set "keep_msg" to it, so 1119 * that it will be displayed again after redraw. 1120 */ 1121 void 1122 set_keep_msg_from_hist() 1123 { 1124 if (keep_msg == NULL && last_msg_hist != NULL && msg_scrolled == 0 1125 && (State & NORMAL)) 1126 set_keep_msg(last_msg_hist->msg, last_msg_hist->attr); 1127 } 1128 #endif 1129 1130 /* 1131 * Prepare for outputting characters in the command line. 1132 */ 1133 void 1134 msg_start() 1135 { 1136 int did_return = FALSE; 1137 1138 vim_free(keep_msg); 1139 keep_msg = NULL; /* don't display old message now */ 1140 1141 #ifdef FEAT_EVAL 1142 if (need_clr_eos) 1143 { 1144 /* Halfway an ":echo" command and getting an (error) message: clear 1145 * any text from the command. */ 1146 need_clr_eos = FALSE; 1147 msg_clr_eos(); 1148 } 1149 #endif 1150 1151 if (!msg_scroll && full_screen) /* overwrite last message */ 1152 { 1153 msg_row = cmdline_row; 1154 msg_col = 1155 #ifdef FEAT_RIGHTLEFT 1156 cmdmsg_rl ? Columns - 1 : 1157 #endif 1158 0; 1159 } 1160 else if (msg_didout) /* start message on next line */ 1161 { 1162 msg_putchar('\n'); 1163 did_return = TRUE; 1164 if (exmode_active != EXMODE_NORMAL) 1165 cmdline_row = msg_row; 1166 } 1167 if (!msg_didany || lines_left < 0) 1168 msg_starthere(); 1169 if (msg_silent == 0) 1170 { 1171 msg_didout = FALSE; /* no output on current line yet */ 1172 cursor_off(); 1173 } 1174 1175 /* when redirecting, may need to start a new line. */ 1176 if (!did_return) 1177 redir_write((char_u *)"\n", -1); 1178 } 1179 1180 /* 1181 * Note that the current msg position is where messages start. 1182 */ 1183 void 1184 msg_starthere() 1185 { 1186 lines_left = cmdline_row; 1187 msg_didany = FALSE; 1188 } 1189 1190 void 1191 msg_putchar(c) 1192 int c; 1193 { 1194 msg_putchar_attr(c, 0); 1195 } 1196 1197 void 1198 msg_putchar_attr(c, attr) 1199 int c; 1200 int attr; 1201 { 1202 #ifdef FEAT_MBYTE 1203 char_u buf[MB_MAXBYTES + 1]; 1204 #else 1205 char_u buf[4]; 1206 #endif 1207 1208 if (IS_SPECIAL(c)) 1209 { 1210 buf[0] = K_SPECIAL; 1211 buf[1] = K_SECOND(c); 1212 buf[2] = K_THIRD(c); 1213 buf[3] = NUL; 1214 } 1215 else 1216 { 1217 #ifdef FEAT_MBYTE 1218 buf[(*mb_char2bytes)(c, buf)] = NUL; 1219 #else 1220 buf[0] = c; 1221 buf[1] = NUL; 1222 #endif 1223 } 1224 msg_puts_attr(buf, attr); 1225 } 1226 1227 void 1228 msg_outnum(n) 1229 long n; 1230 { 1231 char_u buf[20]; 1232 1233 sprintf((char *)buf, "%ld", n); 1234 msg_puts(buf); 1235 } 1236 1237 void 1238 msg_home_replace(fname) 1239 char_u *fname; 1240 { 1241 msg_home_replace_attr(fname, 0); 1242 } 1243 1244 #if defined(FEAT_FIND_ID) || defined(PROTO) 1245 void 1246 msg_home_replace_hl(fname) 1247 char_u *fname; 1248 { 1249 msg_home_replace_attr(fname, hl_attr(HLF_D)); 1250 } 1251 #endif 1252 1253 static void 1254 msg_home_replace_attr(fname, attr) 1255 char_u *fname; 1256 int attr; 1257 { 1258 char_u *name; 1259 1260 name = home_replace_save(NULL, fname); 1261 if (name != NULL) 1262 msg_outtrans_attr(name, attr); 1263 vim_free(name); 1264 } 1265 1266 /* 1267 * Output 'len' characters in 'str' (including NULs) with translation 1268 * if 'len' is -1, output upto a NUL character. 1269 * Use attributes 'attr'. 1270 * Return the number of characters it takes on the screen. 1271 */ 1272 int 1273 msg_outtrans(str) 1274 char_u *str; 1275 { 1276 return msg_outtrans_attr(str, 0); 1277 } 1278 1279 int 1280 msg_outtrans_attr(str, attr) 1281 char_u *str; 1282 int attr; 1283 { 1284 return msg_outtrans_len_attr(str, (int)STRLEN(str), attr); 1285 } 1286 1287 int 1288 msg_outtrans_len(str, len) 1289 char_u *str; 1290 int len; 1291 { 1292 return msg_outtrans_len_attr(str, len, 0); 1293 } 1294 1295 /* 1296 * Output one character at "p". Return pointer to the next character. 1297 * Handles multi-byte characters. 1298 */ 1299 char_u * 1300 msg_outtrans_one(p, attr) 1301 char_u *p; 1302 int attr; 1303 { 1304 #ifdef FEAT_MBYTE 1305 int l; 1306 1307 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) 1308 { 1309 msg_outtrans_len_attr(p, l, attr); 1310 return p + l; 1311 } 1312 #endif 1313 msg_puts_attr(transchar_byte(*p), attr); 1314 return p + 1; 1315 } 1316 1317 int 1318 msg_outtrans_len_attr(msgstr, len, attr) 1319 char_u *msgstr; 1320 int len; 1321 int attr; 1322 { 1323 int retval = 0; 1324 char_u *str = msgstr; 1325 char_u *plain_start = msgstr; 1326 char_u *s; 1327 #ifdef FEAT_MBYTE 1328 int mb_l; 1329 int c; 1330 #endif 1331 1332 /* if MSG_HIST flag set, add message to history */ 1333 if (attr & MSG_HIST) 1334 { 1335 add_msg_hist(str, len, attr); 1336 attr &= ~MSG_HIST; 1337 } 1338 1339 #ifdef FEAT_MBYTE 1340 /* If the string starts with a composing character first draw a space on 1341 * which the composing char can be drawn. */ 1342 if (enc_utf8 && utf_iscomposing(utf_ptr2char(msgstr))) 1343 msg_puts_attr((char_u *)" ", attr); 1344 #endif 1345 1346 /* 1347 * Go over the string. Special characters are translated and printed. 1348 * Normal characters are printed several at a time. 1349 */ 1350 while (--len >= 0) 1351 { 1352 #ifdef FEAT_MBYTE 1353 if (enc_utf8) 1354 /* Don't include composing chars after the end. */ 1355 mb_l = utfc_ptr2len_len(str, len + 1); 1356 else if (has_mbyte) 1357 mb_l = (*mb_ptr2len)(str); 1358 else 1359 mb_l = 1; 1360 if (has_mbyte && mb_l > 1) 1361 { 1362 c = (*mb_ptr2char)(str); 1363 if (vim_isprintc(c)) 1364 /* printable multi-byte char: count the cells. */ 1365 retval += (*mb_ptr2cells)(str); 1366 else 1367 { 1368 /* unprintable multi-byte char: print the printable chars so 1369 * far and the translation of the unprintable char. */ 1370 if (str > plain_start) 1371 msg_puts_attr_len(plain_start, (int)(str - plain_start), 1372 attr); 1373 plain_start = str + mb_l; 1374 msg_puts_attr(transchar(c), attr == 0 ? hl_attr(HLF_8) : attr); 1375 retval += char2cells(c); 1376 } 1377 len -= mb_l - 1; 1378 str += mb_l; 1379 } 1380 else 1381 #endif 1382 { 1383 s = transchar_byte(*str); 1384 if (s[1] != NUL) 1385 { 1386 /* unprintable char: print the printable chars so far and the 1387 * translation of the unprintable char. */ 1388 if (str > plain_start) 1389 msg_puts_attr_len(plain_start, (int)(str - plain_start), 1390 attr); 1391 plain_start = str + 1; 1392 msg_puts_attr(s, attr == 0 ? hl_attr(HLF_8) : attr); 1393 } 1394 retval += ptr2cells(str); 1395 ++str; 1396 } 1397 } 1398 1399 if (str > plain_start) 1400 /* print the printable chars at the end */ 1401 msg_puts_attr_len(plain_start, (int)(str - plain_start), attr); 1402 1403 return retval; 1404 } 1405 1406 #if defined(FEAT_QUICKFIX) || defined(PROTO) 1407 void 1408 msg_make(arg) 1409 char_u *arg; 1410 { 1411 int i; 1412 static char_u *str = (char_u *)"eeffoc", *rs = (char_u *)"Plon#dqg#vxjduB"; 1413 1414 arg = skipwhite(arg); 1415 for (i = 5; *arg && i >= 0; --i) 1416 if (*arg++ != str[i]) 1417 break; 1418 if (i < 0) 1419 { 1420 msg_putchar('\n'); 1421 for (i = 0; rs[i]; ++i) 1422 msg_putchar(rs[i] - 3); 1423 } 1424 } 1425 #endif 1426 1427 /* 1428 * Output the string 'str' upto a NUL character. 1429 * Return the number of characters it takes on the screen. 1430 * 1431 * If K_SPECIAL is encountered, then it is taken in conjunction with the 1432 * following character and shown as <F1>, <S-Up> etc. Any other character 1433 * which is not printable shown in <> form. 1434 * If 'from' is TRUE (lhs of a mapping), a space is shown as <Space>. 1435 * If a character is displayed in one of these special ways, is also 1436 * highlighted (its highlight name is '8' in the p_hl variable). 1437 * Otherwise characters are not highlighted. 1438 * This function is used to show mappings, where we want to see how to type 1439 * the character/string -- webb 1440 */ 1441 int 1442 msg_outtrans_special(strstart, from) 1443 char_u *strstart; 1444 int from; /* TRUE for lhs of a mapping */ 1445 { 1446 char_u *str = strstart; 1447 int retval = 0; 1448 char_u *string; 1449 int attr; 1450 int len; 1451 1452 attr = hl_attr(HLF_8); 1453 while (*str != NUL) 1454 { 1455 /* Leading and trailing spaces need to be displayed in <> form. */ 1456 if ((str == strstart || str[1] == NUL) && *str == ' ') 1457 { 1458 string = (char_u *)"<Space>"; 1459 ++str; 1460 } 1461 else 1462 string = str2special(&str, from); 1463 len = vim_strsize(string); 1464 /* Highlight special keys */ 1465 msg_puts_attr(string, len > 1 1466 #ifdef FEAT_MBYTE 1467 && (*mb_ptr2len)(string) <= 1 1468 #endif 1469 ? attr : 0); 1470 retval += len; 1471 } 1472 return retval; 1473 } 1474 1475 /* 1476 * Return the printable string for the key codes at "*sp". 1477 * Used for translating the lhs or rhs of a mapping to printable chars. 1478 * Advances "sp" to the next code. 1479 */ 1480 char_u * 1481 str2special(sp, from) 1482 char_u **sp; 1483 int from; /* TRUE for lhs of mapping */ 1484 { 1485 int c; 1486 static char_u buf[7]; 1487 char_u *str = *sp; 1488 int modifiers = 0; 1489 int special = FALSE; 1490 1491 #ifdef FEAT_MBYTE 1492 if (has_mbyte) 1493 { 1494 char_u *p; 1495 1496 /* Try to un-escape a multi-byte character. Return the un-escaped 1497 * string if it is a multi-byte character. */ 1498 p = mb_unescape(sp); 1499 if (p != NULL) 1500 return p; 1501 } 1502 #endif 1503 1504 c = *str; 1505 if (c == K_SPECIAL && str[1] != NUL && str[2] != NUL) 1506 { 1507 if (str[1] == KS_MODIFIER) 1508 { 1509 modifiers = str[2]; 1510 str += 3; 1511 c = *str; 1512 } 1513 if (c == K_SPECIAL && str[1] != NUL && str[2] != NUL) 1514 { 1515 c = TO_SPECIAL(str[1], str[2]); 1516 str += 2; 1517 if (c == K_ZERO) /* display <Nul> as ^@ */ 1518 c = NUL; 1519 } 1520 if (IS_SPECIAL(c) || modifiers) /* special key */ 1521 special = TRUE; 1522 } 1523 *sp = str + 1; 1524 1525 #ifdef FEAT_MBYTE 1526 /* For multi-byte characters check for an illegal byte. */ 1527 if (has_mbyte && MB_BYTE2LEN(*str) > (*mb_ptr2len)(str)) 1528 { 1529 transchar_nonprint(buf, c); 1530 return buf; 1531 } 1532 #endif 1533 1534 /* Make unprintable characters in <> form, also <M-Space> and <Tab>. 1535 * Use <Space> only for lhs of a mapping. */ 1536 if (special || char2cells(c) > 1 || (from && c == ' ')) 1537 return get_special_key_name(c, modifiers); 1538 buf[0] = c; 1539 buf[1] = NUL; 1540 return buf; 1541 } 1542 1543 /* 1544 * Translate a key sequence into special key names. 1545 */ 1546 void 1547 str2specialbuf(sp, buf, len) 1548 char_u *sp; 1549 char_u *buf; 1550 int len; 1551 { 1552 char_u *s; 1553 1554 *buf = NUL; 1555 while (*sp) 1556 { 1557 s = str2special(&sp, FALSE); 1558 if ((int)(STRLEN(s) + STRLEN(buf)) < len) 1559 STRCAT(buf, s); 1560 } 1561 } 1562 1563 /* 1564 * print line for :print or :list command 1565 */ 1566 void 1567 msg_prt_line(s, list) 1568 char_u *s; 1569 int list; 1570 { 1571 int c; 1572 int col = 0; 1573 int n_extra = 0; 1574 int c_extra = 0; 1575 char_u *p_extra = NULL; /* init to make SASC shut up */ 1576 int n; 1577 int attr = 0; 1578 char_u *trail = NULL; 1579 #ifdef FEAT_MBYTE 1580 int l; 1581 char_u buf[MB_MAXBYTES + 1]; 1582 #endif 1583 1584 if (curwin->w_p_list) 1585 list = TRUE; 1586 1587 /* find start of trailing whitespace */ 1588 if (list && lcs_trail) 1589 { 1590 trail = s + STRLEN(s); 1591 while (trail > s && vim_iswhite(trail[-1])) 1592 --trail; 1593 } 1594 1595 /* output a space for an empty line, otherwise the line will be 1596 * overwritten */ 1597 if (*s == NUL && !(list && lcs_eol != NUL)) 1598 msg_putchar(' '); 1599 1600 while (!got_int) 1601 { 1602 if (n_extra > 0) 1603 { 1604 --n_extra; 1605 if (c_extra) 1606 c = c_extra; 1607 else 1608 c = *p_extra++; 1609 } 1610 #ifdef FEAT_MBYTE 1611 else if (has_mbyte && (l = (*mb_ptr2len)(s)) > 1) 1612 { 1613 col += (*mb_ptr2cells)(s); 1614 mch_memmove(buf, s, (size_t)l); 1615 buf[l] = NUL; 1616 msg_puts(buf); 1617 s += l; 1618 continue; 1619 } 1620 #endif 1621 else 1622 { 1623 attr = 0; 1624 c = *s++; 1625 if (c == TAB && (!list || lcs_tab1)) 1626 { 1627 /* tab amount depends on current column */ 1628 n_extra = curbuf->b_p_ts - col % curbuf->b_p_ts - 1; 1629 if (!list) 1630 { 1631 c = ' '; 1632 c_extra = ' '; 1633 } 1634 else 1635 { 1636 c = lcs_tab1; 1637 c_extra = lcs_tab2; 1638 attr = hl_attr(HLF_8); 1639 } 1640 } 1641 else if (c == NUL && list && lcs_eol != NUL) 1642 { 1643 p_extra = (char_u *)""; 1644 c_extra = NUL; 1645 n_extra = 1; 1646 c = lcs_eol; 1647 attr = hl_attr(HLF_AT); 1648 --s; 1649 } 1650 else if (c != NUL && (n = byte2cells(c)) > 1) 1651 { 1652 n_extra = n - 1; 1653 p_extra = transchar_byte(c); 1654 c_extra = NUL; 1655 c = *p_extra++; 1656 /* Use special coloring to be able to distinguish <hex> from 1657 * the same in plain text. */ 1658 attr = hl_attr(HLF_8); 1659 } 1660 else if (c == ' ' && trail != NULL && s > trail) 1661 { 1662 c = lcs_trail; 1663 attr = hl_attr(HLF_8); 1664 } 1665 } 1666 1667 if (c == NUL) 1668 break; 1669 1670 msg_putchar_attr(c, attr); 1671 col++; 1672 } 1673 msg_clr_eos(); 1674 } 1675 1676 #ifdef FEAT_MBYTE 1677 /* 1678 * Use screen_puts() to output one multi-byte character. 1679 * Return the pointer "s" advanced to the next character. 1680 */ 1681 static char_u * 1682 screen_puts_mbyte(s, l, attr) 1683 char_u *s; 1684 int l; 1685 int attr; 1686 { 1687 int cw; 1688 1689 msg_didout = TRUE; /* remember that line is not empty */ 1690 cw = (*mb_ptr2cells)(s); 1691 if (cw > 1 && ( 1692 #ifdef FEAT_RIGHTLEFT 1693 cmdmsg_rl ? msg_col <= 1 : 1694 #endif 1695 msg_col == Columns - 1)) 1696 { 1697 /* Doesn't fit, print a highlighted '>' to fill it up. */ 1698 msg_screen_putchar('>', hl_attr(HLF_AT)); 1699 return s; 1700 } 1701 1702 screen_puts_len(s, l, msg_row, msg_col, attr); 1703 #ifdef FEAT_RIGHTLEFT 1704 if (cmdmsg_rl) 1705 { 1706 msg_col -= cw; 1707 if (msg_col == 0) 1708 { 1709 msg_col = Columns; 1710 ++msg_row; 1711 } 1712 } 1713 else 1714 #endif 1715 { 1716 msg_col += cw; 1717 if (msg_col >= Columns) 1718 { 1719 msg_col = 0; 1720 ++msg_row; 1721 } 1722 } 1723 return s + l; 1724 } 1725 #endif 1726 1727 /* 1728 * Output a string to the screen at position msg_row, msg_col. 1729 * Update msg_row and msg_col for the next message. 1730 */ 1731 void 1732 msg_puts(s) 1733 char_u *s; 1734 { 1735 msg_puts_attr(s, 0); 1736 } 1737 1738 void 1739 msg_puts_title(s) 1740 char_u *s; 1741 { 1742 msg_puts_attr(s, hl_attr(HLF_T)); 1743 } 1744 1745 /* 1746 * Show a message in such a way that it always fits in the line. Cut out a 1747 * part in the middle and replace it with "..." when necessary. 1748 * Does not handle multi-byte characters! 1749 */ 1750 void 1751 msg_puts_long_attr(longstr, attr) 1752 char_u *longstr; 1753 int attr; 1754 { 1755 msg_puts_long_len_attr(longstr, (int)STRLEN(longstr), attr); 1756 } 1757 1758 void 1759 msg_puts_long_len_attr(longstr, len, attr) 1760 char_u *longstr; 1761 int len; 1762 int attr; 1763 { 1764 int slen = len; 1765 int room; 1766 1767 room = Columns - msg_col; 1768 if (len > room && room >= 20) 1769 { 1770 slen = (room - 3) / 2; 1771 msg_outtrans_len_attr(longstr, slen, attr); 1772 msg_puts_attr((char_u *)"...", hl_attr(HLF_8)); 1773 } 1774 msg_outtrans_len_attr(longstr + len - slen, slen, attr); 1775 } 1776 1777 /* 1778 * Basic function for writing a message with highlight attributes. 1779 */ 1780 void 1781 msg_puts_attr(s, attr) 1782 char_u *s; 1783 int attr; 1784 { 1785 msg_puts_attr_len(s, -1, attr); 1786 } 1787 1788 /* 1789 * Like msg_puts_attr(), but with a maximum length "maxlen" (in bytes). 1790 * When "maxlen" is -1 there is no maximum length. 1791 * When "maxlen" is >= 0 the message is not put in the history. 1792 */ 1793 static void 1794 msg_puts_attr_len(str, maxlen, attr) 1795 char_u *str; 1796 int maxlen; 1797 int attr; 1798 { 1799 /* 1800 * If redirection is on, also write to the redirection file. 1801 */ 1802 redir_write(str, maxlen); 1803 1804 /* 1805 * Don't print anything when using ":silent cmd". 1806 */ 1807 if (msg_silent != 0) 1808 return; 1809 1810 /* if MSG_HIST flag set, add message to history */ 1811 if ((attr & MSG_HIST) && maxlen < 0) 1812 { 1813 add_msg_hist(str, -1, attr); 1814 attr &= ~MSG_HIST; 1815 } 1816 1817 /* 1818 * When writing something to the screen after it has scrolled, requires a 1819 * wait-return prompt later. Needed when scrolling, resetting 1820 * need_wait_return after some prompt, and then outputting something 1821 * without scrolling 1822 */ 1823 if (msg_scrolled != 0 && !msg_scrolled_ign) 1824 need_wait_return = TRUE; 1825 msg_didany = TRUE; /* remember that something was outputted */ 1826 1827 /* 1828 * If there is no valid screen, use fprintf so we can see error messages. 1829 * If termcap is not active, we may be writing in an alternate console 1830 * window, cursor positioning may not work correctly (window size may be 1831 * different, e.g. for Win32 console) or we just don't know where the 1832 * cursor is. 1833 */ 1834 if (msg_use_printf()) 1835 msg_puts_printf(str, maxlen); 1836 else 1837 msg_puts_display(str, maxlen, attr, FALSE); 1838 } 1839 1840 /* 1841 * The display part of msg_puts_attr_len(). 1842 * May be called recursively to display scroll-back text. 1843 */ 1844 static void 1845 msg_puts_display(str, maxlen, attr, recurse) 1846 char_u *str; 1847 int maxlen; 1848 int attr; 1849 int recurse; 1850 { 1851 char_u *s = str; 1852 char_u *t_s = str; /* string from "t_s" to "s" is still todo */ 1853 int t_col = 0; /* screen cells todo, 0 when "t_s" not used */ 1854 #ifdef FEAT_MBYTE 1855 int l; 1856 int cw; 1857 #endif 1858 char_u *sb_str = str; 1859 int sb_col = msg_col; 1860 int wrap; 1861 int did_last_char; 1862 1863 did_wait_return = FALSE; 1864 while ((maxlen < 0 || (int)(s - str) < maxlen) && *s != NUL) 1865 { 1866 /* 1867 * We are at the end of the screen line when: 1868 * - When outputting a newline. 1869 * - When outputting a character in the last column. 1870 */ 1871 if (!recurse && msg_row >= Rows - 1 && (*s == '\n' || ( 1872 #ifdef FEAT_RIGHTLEFT 1873 cmdmsg_rl 1874 ? ( 1875 msg_col <= 1 1876 || (*s == TAB && msg_col <= 7) 1877 # ifdef FEAT_MBYTE 1878 || (has_mbyte && (*mb_ptr2cells)(s) > 1 && msg_col <= 2) 1879 # endif 1880 ) 1881 : 1882 #endif 1883 (msg_col + t_col >= Columns - 1 1884 || (*s == TAB && msg_col + t_col >= ((Columns - 1) & ~7)) 1885 # ifdef FEAT_MBYTE 1886 || (has_mbyte && (*mb_ptr2cells)(s) > 1 1887 && msg_col + t_col >= Columns - 2) 1888 # endif 1889 )))) 1890 { 1891 /* 1892 * The screen is scrolled up when at the last row (some terminals 1893 * scroll automatically, some don't. To avoid problems we scroll 1894 * ourselves). 1895 */ 1896 if (t_col > 0) 1897 /* output postponed text */ 1898 t_puts(&t_col, t_s, s, attr); 1899 1900 /* When no more prompt and no more room, truncate here */ 1901 if (msg_no_more && lines_left == 0) 1902 break; 1903 1904 /* Scroll the screen up one line. */ 1905 msg_scroll_up(); 1906 1907 msg_row = Rows - 2; 1908 if (msg_col >= Columns) /* can happen after screen resize */ 1909 msg_col = Columns - 1; 1910 1911 /* Display char in last column before showing more-prompt. */ 1912 if (*s >= ' ' 1913 #ifdef FEAT_RIGHTLEFT 1914 && !cmdmsg_rl 1915 #endif 1916 ) 1917 { 1918 #ifdef FEAT_MBYTE 1919 if (has_mbyte) 1920 { 1921 if (enc_utf8 && maxlen >= 0) 1922 /* avoid including composing chars after the end */ 1923 l = utfc_ptr2len_len(s, (int)((str + maxlen) - s)); 1924 else 1925 l = (*mb_ptr2len)(s); 1926 s = screen_puts_mbyte(s, l, attr); 1927 } 1928 else 1929 #endif 1930 msg_screen_putchar(*s++, attr); 1931 did_last_char = TRUE; 1932 } 1933 else 1934 did_last_char = FALSE; 1935 1936 if (p_more) 1937 /* store text for scrolling back */ 1938 store_sb_text(&sb_str, s, attr, &sb_col, TRUE); 1939 1940 inc_msg_scrolled(); 1941 need_wait_return = TRUE; /* may need wait_return in main() */ 1942 if (must_redraw < VALID) 1943 must_redraw = VALID; 1944 redraw_cmdline = TRUE; 1945 if (cmdline_row > 0 && !exmode_active) 1946 --cmdline_row; 1947 1948 /* 1949 * If screen is completely filled and 'more' is set then wait 1950 * for a character. 1951 */ 1952 if (lines_left > 0) 1953 --lines_left; 1954 if (p_more && lines_left == 0 && State != HITRETURN 1955 && !msg_no_more && !exmode_active) 1956 { 1957 #ifdef FEAT_CON_DIALOG 1958 if (do_more_prompt(NUL)) 1959 s = confirm_msg_tail; 1960 #else 1961 (void)do_more_prompt(NUL); 1962 #endif 1963 if (quit_more) 1964 return; 1965 } 1966 1967 /* When we displayed a char in last column need to check if there 1968 * is still more. */ 1969 if (did_last_char) 1970 continue; 1971 } 1972 1973 wrap = *s == '\n' 1974 || msg_col + t_col >= Columns 1975 #ifdef FEAT_MBYTE 1976 || (has_mbyte && (*mb_ptr2cells)(s) > 1 1977 && msg_col + t_col >= Columns - 1) 1978 #endif 1979 ; 1980 if (t_col > 0 && (wrap || *s == '\r' || *s == '\b' 1981 || *s == '\t' || *s == BELL)) 1982 /* output any postponed text */ 1983 t_puts(&t_col, t_s, s, attr); 1984 1985 if (wrap && p_more && !recurse) 1986 /* store text for scrolling back */ 1987 store_sb_text(&sb_str, s, attr, &sb_col, TRUE); 1988 1989 if (*s == '\n') /* go to next line */ 1990 { 1991 msg_didout = FALSE; /* remember that line is empty */ 1992 #ifdef FEAT_RIGHTLEFT 1993 if (cmdmsg_rl) 1994 msg_col = Columns - 1; 1995 else 1996 #endif 1997 msg_col = 0; 1998 if (++msg_row >= Rows) /* safety check */ 1999 msg_row = Rows - 1; 2000 } 2001 else if (*s == '\r') /* go to column 0 */ 2002 { 2003 msg_col = 0; 2004 } 2005 else if (*s == '\b') /* go to previous char */ 2006 { 2007 if (msg_col) 2008 --msg_col; 2009 } 2010 else if (*s == TAB) /* translate Tab into spaces */ 2011 { 2012 do 2013 msg_screen_putchar(' ', attr); 2014 while (msg_col & 7); 2015 } 2016 else if (*s == BELL) /* beep (from ":sh") */ 2017 vim_beep(); 2018 else 2019 { 2020 #ifdef FEAT_MBYTE 2021 if (has_mbyte) 2022 { 2023 cw = (*mb_ptr2cells)(s); 2024 if (enc_utf8 && maxlen >= 0) 2025 /* avoid including composing chars after the end */ 2026 l = utfc_ptr2len_len(s, (int)((str + maxlen) - s)); 2027 else 2028 l = (*mb_ptr2len)(s); 2029 } 2030 else 2031 { 2032 cw = 1; 2033 l = 1; 2034 } 2035 #endif 2036 /* When drawing from right to left or when a double-wide character 2037 * doesn't fit, draw a single character here. Otherwise collect 2038 * characters and draw them all at once later. */ 2039 #if defined(FEAT_RIGHTLEFT) || defined(FEAT_MBYTE) 2040 if ( 2041 # ifdef FEAT_RIGHTLEFT 2042 cmdmsg_rl 2043 # ifdef FEAT_MBYTE 2044 || 2045 # endif 2046 # endif 2047 # ifdef FEAT_MBYTE 2048 (cw > 1 && msg_col + t_col >= Columns - 1) 2049 # endif 2050 ) 2051 { 2052 # ifdef FEAT_MBYTE 2053 if (l > 1) 2054 s = screen_puts_mbyte(s, l, attr) - 1; 2055 else 2056 # endif 2057 msg_screen_putchar(*s, attr); 2058 } 2059 else 2060 #endif 2061 { 2062 /* postpone this character until later */ 2063 if (t_col == 0) 2064 t_s = s; 2065 #ifdef FEAT_MBYTE 2066 t_col += cw; 2067 s += l - 1; 2068 #else 2069 ++t_col; 2070 #endif 2071 } 2072 } 2073 ++s; 2074 } 2075 2076 /* output any postponed text */ 2077 if (t_col > 0) 2078 t_puts(&t_col, t_s, s, attr); 2079 if (p_more && !recurse) 2080 store_sb_text(&sb_str, s, attr, &sb_col, FALSE); 2081 2082 msg_check(); 2083 } 2084 2085 /* 2086 * Scroll the screen up one line for displaying the next message line. 2087 */ 2088 static void 2089 msg_scroll_up() 2090 { 2091 #ifdef FEAT_GUI 2092 /* Remove the cursor before scrolling, ScreenLines[] is going 2093 * to become invalid. */ 2094 if (gui.in_use) 2095 gui_undraw_cursor(); 2096 #endif 2097 /* scrolling up always works */ 2098 screen_del_lines(0, 0, 1, (int)Rows, TRUE, NULL); 2099 2100 if (!can_clear((char_u *)" ")) 2101 { 2102 /* Scrolling up doesn't result in the right background. Set the 2103 * background here. It's not efficient, but avoids that we have to do 2104 * it all over the code. */ 2105 screen_fill((int)Rows - 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2106 2107 /* Also clear the last char of the last but one line if it was not 2108 * cleared before to avoid a scroll-up. */ 2109 if (ScreenAttrs[LineOffset[Rows - 2] + Columns - 1] == (sattr_T)-1) 2110 screen_fill((int)Rows - 2, (int)Rows - 1, 2111 (int)Columns - 1, (int)Columns, ' ', ' ', 0); 2112 } 2113 } 2114 2115 /* 2116 * Increment "msg_scrolled". 2117 */ 2118 static void 2119 inc_msg_scrolled() 2120 { 2121 #ifdef FEAT_EVAL 2122 if (*get_vim_var_str(VV_SCROLLSTART) == NUL) 2123 { 2124 char_u *p = sourcing_name; 2125 char_u *tofree = NULL; 2126 int len; 2127 2128 /* v:scrollstart is empty, set it to the script/function name and line 2129 * number */ 2130 if (p == NULL) 2131 p = (char_u *)_("Unknown"); 2132 else 2133 { 2134 len = (int)STRLEN(p) + 40; 2135 tofree = alloc(len); 2136 if (tofree != NULL) 2137 { 2138 vim_snprintf((char *)tofree, len, _("%s line %ld"), 2139 p, (long)sourcing_lnum); 2140 p = tofree; 2141 } 2142 } 2143 set_vim_var_string(VV_SCROLLSTART, p, -1); 2144 vim_free(tofree); 2145 } 2146 #endif 2147 ++msg_scrolled; 2148 } 2149 2150 /* 2151 * To be able to scroll back at the "more" and "hit-enter" prompts we need to 2152 * store the displayed text and remember where screen lines start. 2153 */ 2154 typedef struct msgchunk_S msgchunk_T; 2155 struct msgchunk_S 2156 { 2157 msgchunk_T *sb_next; 2158 msgchunk_T *sb_prev; 2159 char sb_eol; /* TRUE when line ends after this text */ 2160 int sb_msg_col; /* column in which text starts */ 2161 int sb_attr; /* text attributes */ 2162 char_u sb_text[1]; /* text to be displayed, actually longer */ 2163 }; 2164 2165 static msgchunk_T *last_msgchunk = NULL; /* last displayed text */ 2166 2167 static msgchunk_T *msg_sb_start __ARGS((msgchunk_T *mps)); 2168 static msgchunk_T *disp_sb_line __ARGS((int row, msgchunk_T *smp)); 2169 2170 static int do_clear_sb_text = FALSE; /* clear text on next msg */ 2171 2172 /* 2173 * Store part of a printed message for displaying when scrolling back. 2174 */ 2175 static void 2176 store_sb_text(sb_str, s, attr, sb_col, finish) 2177 char_u **sb_str; /* start of string */ 2178 char_u *s; /* just after string */ 2179 int attr; 2180 int *sb_col; 2181 int finish; /* line ends */ 2182 { 2183 msgchunk_T *mp; 2184 2185 if (do_clear_sb_text) 2186 { 2187 clear_sb_text(); 2188 do_clear_sb_text = FALSE; 2189 } 2190 2191 if (s > *sb_str) 2192 { 2193 mp = (msgchunk_T *)alloc((int)(sizeof(msgchunk_T) + (s - *sb_str))); 2194 if (mp != NULL) 2195 { 2196 mp->sb_eol = finish; 2197 mp->sb_msg_col = *sb_col; 2198 mp->sb_attr = attr; 2199 vim_strncpy(mp->sb_text, *sb_str, s - *sb_str); 2200 2201 if (last_msgchunk == NULL) 2202 { 2203 last_msgchunk = mp; 2204 mp->sb_prev = NULL; 2205 } 2206 else 2207 { 2208 mp->sb_prev = last_msgchunk; 2209 last_msgchunk->sb_next = mp; 2210 last_msgchunk = mp; 2211 } 2212 mp->sb_next = NULL; 2213 } 2214 } 2215 else if (finish && last_msgchunk != NULL) 2216 last_msgchunk->sb_eol = TRUE; 2217 2218 *sb_str = s; 2219 *sb_col = 0; 2220 } 2221 2222 /* 2223 * Finished showing messages, clear the scroll-back text on the next message. 2224 */ 2225 void 2226 may_clear_sb_text() 2227 { 2228 do_clear_sb_text = TRUE; 2229 } 2230 2231 /* 2232 * Clear any text remembered for scrolling back. 2233 * Called when redrawing the screen. 2234 */ 2235 void 2236 clear_sb_text() 2237 { 2238 msgchunk_T *mp; 2239 2240 while (last_msgchunk != NULL) 2241 { 2242 mp = last_msgchunk->sb_prev; 2243 vim_free(last_msgchunk); 2244 last_msgchunk = mp; 2245 } 2246 } 2247 2248 /* 2249 * "g<" command. 2250 */ 2251 void 2252 show_sb_text() 2253 { 2254 msgchunk_T *mp; 2255 2256 /* Only show something if there is more than one line, otherwise it looks 2257 * weird, typing a command without output results in one line. */ 2258 mp = msg_sb_start(last_msgchunk); 2259 if (mp == NULL || mp->sb_prev == NULL) 2260 vim_beep(); 2261 else 2262 { 2263 do_more_prompt('G'); 2264 wait_return(FALSE); 2265 } 2266 } 2267 2268 /* 2269 * Move to the start of screen line in already displayed text. 2270 */ 2271 static msgchunk_T * 2272 msg_sb_start(mps) 2273 msgchunk_T *mps; 2274 { 2275 msgchunk_T *mp = mps; 2276 2277 while (mp != NULL && mp->sb_prev != NULL && !mp->sb_prev->sb_eol) 2278 mp = mp->sb_prev; 2279 return mp; 2280 } 2281 2282 /* 2283 * Display a screen line from previously displayed text at row "row". 2284 * Returns a pointer to the text for the next line (can be NULL). 2285 */ 2286 static msgchunk_T * 2287 disp_sb_line(row, smp) 2288 int row; 2289 msgchunk_T *smp; 2290 { 2291 msgchunk_T *mp = smp; 2292 char_u *p; 2293 2294 for (;;) 2295 { 2296 msg_row = row; 2297 msg_col = mp->sb_msg_col; 2298 p = mp->sb_text; 2299 if (*p == '\n') /* don't display the line break */ 2300 ++p; 2301 msg_puts_display(p, -1, mp->sb_attr, TRUE); 2302 if (mp->sb_eol || mp->sb_next == NULL) 2303 break; 2304 mp = mp->sb_next; 2305 } 2306 return mp->sb_next; 2307 } 2308 2309 /* 2310 * Output any postponed text for msg_puts_attr_len(). 2311 */ 2312 static void 2313 t_puts(t_col, t_s, s, attr) 2314 int *t_col; 2315 char_u *t_s; 2316 char_u *s; 2317 int attr; 2318 { 2319 /* output postponed text */ 2320 msg_didout = TRUE; /* remember that line is not empty */ 2321 screen_puts_len(t_s, (int)(s - t_s), msg_row, msg_col, attr); 2322 msg_col += *t_col; 2323 *t_col = 0; 2324 #ifdef FEAT_MBYTE 2325 /* If the string starts with a composing character don't increment the 2326 * column position for it. */ 2327 if (enc_utf8 && utf_iscomposing(utf_ptr2char(t_s))) 2328 --msg_col; 2329 #endif 2330 if (msg_col >= Columns) 2331 { 2332 msg_col = 0; 2333 ++msg_row; 2334 } 2335 } 2336 2337 /* 2338 * Returns TRUE when messages should be printed with mch_errmsg(). 2339 * This is used when there is no valid screen, so we can see error messages. 2340 * If termcap is not active, we may be writing in an alternate console 2341 * window, cursor positioning may not work correctly (window size may be 2342 * different, e.g. for Win32 console) or we just don't know where the 2343 * cursor is. 2344 */ 2345 int 2346 msg_use_printf() 2347 { 2348 return (!msg_check_screen() 2349 #if defined(WIN3264) && !defined(FEAT_GUI_MSWIN) 2350 || !termcap_active 2351 #endif 2352 || (swapping_screen() && !termcap_active) 2353 ); 2354 } 2355 2356 /* 2357 * Print a message when there is no valid screen. 2358 */ 2359 static void 2360 msg_puts_printf(str, maxlen) 2361 char_u *str; 2362 int maxlen; 2363 { 2364 char_u *s = str; 2365 char_u buf[4]; 2366 char_u *p; 2367 2368 #ifdef WIN3264 2369 if (!(silent_mode && p_verbose == 0)) 2370 mch_settmode(TMODE_COOK); /* handle '\r' and '\n' correctly */ 2371 #endif 2372 while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen)) 2373 { 2374 if (!(silent_mode && p_verbose == 0)) 2375 { 2376 /* NL --> CR NL translation (for Unix, not for "--version") */ 2377 /* NL --> CR translation (for Mac) */ 2378 p = &buf[0]; 2379 if (*s == '\n' && !info_message) 2380 *p++ = '\r'; 2381 #if defined(USE_CR) && !defined(MACOS_X_UNIX) 2382 else 2383 #endif 2384 *p++ = *s; 2385 *p = '\0'; 2386 if (info_message) /* informative message, not an error */ 2387 mch_msg((char *)buf); 2388 else 2389 mch_errmsg((char *)buf); 2390 } 2391 2392 /* primitive way to compute the current column */ 2393 #ifdef FEAT_RIGHTLEFT 2394 if (cmdmsg_rl) 2395 { 2396 if (*s == '\r' || *s == '\n') 2397 msg_col = Columns - 1; 2398 else 2399 --msg_col; 2400 } 2401 else 2402 #endif 2403 { 2404 if (*s == '\r' || *s == '\n') 2405 msg_col = 0; 2406 else 2407 ++msg_col; 2408 } 2409 ++s; 2410 } 2411 msg_didout = TRUE; /* assume that line is not empty */ 2412 2413 #ifdef WIN3264 2414 if (!(silent_mode && p_verbose == 0)) 2415 mch_settmode(TMODE_RAW); 2416 #endif 2417 } 2418 2419 /* 2420 * Show the more-prompt and handle the user response. 2421 * This takes care of scrolling back and displaying previously displayed text. 2422 * When at hit-enter prompt "typed_char" is the already typed character, 2423 * otherwise it's NUL. 2424 * Returns TRUE when jumping ahead to "confirm_msg_tail". 2425 */ 2426 static int 2427 do_more_prompt(typed_char) 2428 int typed_char; 2429 { 2430 int used_typed_char = typed_char; 2431 int oldState = State; 2432 int c; 2433 #ifdef FEAT_CON_DIALOG 2434 int retval = FALSE; 2435 #endif 2436 int scroll; 2437 msgchunk_T *mp_last = NULL; 2438 msgchunk_T *mp; 2439 int i; 2440 2441 if (typed_char == 'G') 2442 { 2443 /* "g<": Find first line on the last page. */ 2444 mp_last = msg_sb_start(last_msgchunk); 2445 for (i = 0; i < Rows - 2 && mp_last != NULL 2446 && mp_last->sb_prev != NULL; ++i) 2447 mp_last = msg_sb_start(mp_last->sb_prev); 2448 } 2449 2450 State = ASKMORE; 2451 #ifdef FEAT_MOUSE 2452 setmouse(); 2453 #endif 2454 if (typed_char == NUL) 2455 msg_moremsg(FALSE); 2456 for (;;) 2457 { 2458 /* 2459 * Get a typed character directly from the user. 2460 */ 2461 if (used_typed_char != NUL) 2462 { 2463 c = used_typed_char; /* was typed at hit-enter prompt */ 2464 used_typed_char = NUL; 2465 } 2466 else 2467 c = get_keystroke(); 2468 2469 #if defined(FEAT_MENU) && defined(FEAT_GUI) 2470 if (c == K_MENU) 2471 { 2472 int idx = get_menu_index(current_menu, ASKMORE); 2473 2474 /* Used a menu. If it starts with CTRL-Y, it must 2475 * be a "Copy" for the clipboard. Otherwise 2476 * assume that we end */ 2477 if (idx == MENU_INDEX_INVALID) 2478 continue; 2479 c = *current_menu->strings[idx]; 2480 if (c != NUL && current_menu->strings[idx][1] != NUL) 2481 ins_typebuf(current_menu->strings[idx] + 1, 2482 current_menu->noremap[idx], 0, TRUE, 2483 current_menu->silent[idx]); 2484 } 2485 #endif 2486 2487 scroll = 0; 2488 switch (c) 2489 { 2490 case BS: /* scroll one line back */ 2491 case K_BS: 2492 case 'k': 2493 case K_UP: 2494 scroll = -1; 2495 break; 2496 2497 case CAR: /* one extra line */ 2498 case NL: 2499 case 'j': 2500 case K_DOWN: 2501 scroll = 1; 2502 break; 2503 2504 case 'u': /* Up half a page */ 2505 case K_PAGEUP: 2506 scroll = -(Rows / 2); 2507 break; 2508 2509 case 'd': /* Down half a page */ 2510 scroll = Rows / 2; 2511 break; 2512 2513 case 'b': /* one page back */ 2514 scroll = -(Rows - 1); 2515 break; 2516 2517 case ' ': /* one extra page */ 2518 case K_PAGEDOWN: 2519 case K_LEFTMOUSE: 2520 scroll = Rows - 1; 2521 break; 2522 2523 case 'g': /* all the way back to the start */ 2524 scroll = -999999; 2525 break; 2526 2527 case 'G': /* all the way to the end */ 2528 scroll = 999999; 2529 lines_left = 999999; 2530 break; 2531 2532 case ':': /* start new command line */ 2533 #ifdef FEAT_CON_DIALOG 2534 if (!confirm_msg_used) 2535 #endif 2536 { 2537 /* Since got_int is set all typeahead will be flushed, but we 2538 * want to keep this ':', remember that in a special way. */ 2539 typeahead_noflush(':'); 2540 cmdline_row = Rows - 1; /* put ':' on this line */ 2541 skip_redraw = TRUE; /* skip redraw once */ 2542 need_wait_return = FALSE; /* don't wait in main() */ 2543 } 2544 /*FALLTHROUGH*/ 2545 case 'q': /* quit */ 2546 case Ctrl_C: 2547 case ESC: 2548 #ifdef FEAT_CON_DIALOG 2549 if (confirm_msg_used) 2550 { 2551 /* Jump to the choices of the dialog. */ 2552 retval = TRUE; 2553 lines_left = Rows - 1; 2554 } 2555 else 2556 #endif 2557 { 2558 got_int = TRUE; 2559 quit_more = TRUE; 2560 } 2561 break; 2562 2563 #ifdef FEAT_CLIPBOARD 2564 case Ctrl_Y: 2565 /* Strange way to allow copying (yanking) a modeless 2566 * selection at the more prompt. Use CTRL-Y, 2567 * because the same is used in Cmdline-mode and at the 2568 * hit-enter prompt. However, scrolling one line up 2569 * might be expected... */ 2570 if (clip_star.state == SELECT_DONE) 2571 clip_copy_modeless_selection(TRUE); 2572 continue; 2573 #endif 2574 default: /* no valid response */ 2575 msg_moremsg(TRUE); 2576 continue; 2577 } 2578 2579 if (scroll != 0) 2580 { 2581 if (scroll < 0) 2582 { 2583 /* go to start of last line */ 2584 if (mp_last == NULL) 2585 mp = msg_sb_start(last_msgchunk); 2586 else if (mp_last->sb_prev != NULL) 2587 mp = msg_sb_start(mp_last->sb_prev); 2588 else 2589 mp = NULL; 2590 2591 /* go to start of line at top of the screen */ 2592 for (i = 0; i < Rows - 2 && mp != NULL && mp->sb_prev != NULL; 2593 ++i) 2594 mp = msg_sb_start(mp->sb_prev); 2595 2596 if (mp != NULL && mp->sb_prev != NULL) 2597 { 2598 /* Find line to be displayed at top. */ 2599 for (i = 0; i > scroll; --i) 2600 { 2601 if (mp == NULL || mp->sb_prev == NULL) 2602 break; 2603 mp = msg_sb_start(mp->sb_prev); 2604 if (mp_last == NULL) 2605 mp_last = msg_sb_start(last_msgchunk); 2606 else 2607 mp_last = msg_sb_start(mp_last->sb_prev); 2608 } 2609 2610 if (scroll == -1 && screen_ins_lines(0, 0, 1, 2611 (int)Rows, NULL) == OK) 2612 { 2613 /* display line at top */ 2614 (void)disp_sb_line(0, mp); 2615 } 2616 else 2617 { 2618 /* redisplay all lines */ 2619 screenclear(); 2620 for (i = 0; mp != NULL && i < Rows - 1; ++i) 2621 { 2622 mp = disp_sb_line(i, mp); 2623 ++msg_scrolled; 2624 } 2625 } 2626 scroll = 0; 2627 } 2628 } 2629 else 2630 { 2631 /* First display any text that we scrolled back. */ 2632 while (scroll > 0 && mp_last != NULL) 2633 { 2634 /* scroll up, display line at bottom */ 2635 msg_scroll_up(); 2636 inc_msg_scrolled(); 2637 screen_fill((int)Rows - 2, (int)Rows - 1, 0, 2638 (int)Columns, ' ', ' ', 0); 2639 mp_last = disp_sb_line((int)Rows - 2, mp_last); 2640 --scroll; 2641 } 2642 } 2643 2644 if (scroll <= 0) 2645 { 2646 /* displayed the requested text, more prompt again */ 2647 screen_fill((int)Rows - 1, (int)Rows, 0, 2648 (int)Columns, ' ', ' ', 0); 2649 msg_moremsg(FALSE); 2650 continue; 2651 } 2652 2653 /* display more text, return to caller */ 2654 lines_left = scroll; 2655 } 2656 2657 break; 2658 } 2659 2660 /* clear the --more-- message */ 2661 screen_fill((int)Rows - 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2662 State = oldState; 2663 #ifdef FEAT_MOUSE 2664 setmouse(); 2665 #endif 2666 if (quit_more) 2667 { 2668 msg_row = Rows - 1; 2669 msg_col = 0; 2670 } 2671 #ifdef FEAT_RIGHTLEFT 2672 else if (cmdmsg_rl) 2673 msg_col = Columns - 1; 2674 #endif 2675 2676 #ifdef FEAT_CON_DIALOG 2677 return retval; 2678 #else 2679 return FALSE; 2680 #endif 2681 } 2682 2683 #if defined(USE_MCH_ERRMSG) || defined(PROTO) 2684 2685 #ifdef mch_errmsg 2686 # undef mch_errmsg 2687 #endif 2688 #ifdef mch_msg 2689 # undef mch_msg 2690 #endif 2691 2692 /* 2693 * Give an error message. To be used when the screen hasn't been initialized 2694 * yet. When stderr can't be used, collect error messages until the GUI has 2695 * started and they can be displayed in a message box. 2696 */ 2697 void 2698 mch_errmsg(str) 2699 char *str; 2700 { 2701 int len; 2702 2703 #if (defined(UNIX) || defined(FEAT_GUI)) && !defined(ALWAYS_USE_GUI) 2704 /* On Unix use stderr if it's a tty. 2705 * When not going to start the GUI also use stderr. 2706 * On Mac, when started from Finder, stderr is the console. */ 2707 if ( 2708 # ifdef UNIX 2709 # ifdef MACOS_X_UNIX 2710 (isatty(2) && strcmp("/dev/console", ttyname(2)) != 0) 2711 # else 2712 isatty(2) 2713 # endif 2714 # ifdef FEAT_GUI 2715 || 2716 # endif 2717 # endif 2718 # ifdef FEAT_GUI 2719 !(gui.in_use || gui.starting) 2720 # endif 2721 ) 2722 { 2723 fprintf(stderr, "%s", str); 2724 return; 2725 } 2726 #endif 2727 2728 /* avoid a delay for a message that isn't there */ 2729 emsg_on_display = FALSE; 2730 2731 len = (int)STRLEN(str) + 1; 2732 if (error_ga.ga_growsize == 0) 2733 { 2734 error_ga.ga_growsize = 80; 2735 error_ga.ga_itemsize = 1; 2736 } 2737 if (ga_grow(&error_ga, len) == OK) 2738 { 2739 mch_memmove((char_u *)error_ga.ga_data + error_ga.ga_len, 2740 (char_u *)str, len); 2741 #ifdef UNIX 2742 /* remove CR characters, they are displayed */ 2743 { 2744 char_u *p; 2745 2746 p = (char_u *)error_ga.ga_data + error_ga.ga_len; 2747 for (;;) 2748 { 2749 p = vim_strchr(p, '\r'); 2750 if (p == NULL) 2751 break; 2752 *p = ' '; 2753 } 2754 } 2755 #endif 2756 --len; /* don't count the NUL at the end */ 2757 error_ga.ga_len += len; 2758 } 2759 } 2760 2761 /* 2762 * Give a message. To be used when the screen hasn't been initialized yet. 2763 * When there is no tty, collect messages until the GUI has started and they 2764 * can be displayed in a message box. 2765 */ 2766 void 2767 mch_msg(str) 2768 char *str; 2769 { 2770 #if (defined(UNIX) || defined(FEAT_GUI)) && !defined(ALWAYS_USE_GUI) 2771 /* On Unix use stdout if we have a tty. This allows "vim -h | more" and 2772 * uses mch_errmsg() when started from the desktop. 2773 * When not going to start the GUI also use stdout. 2774 * On Mac, when started from Finder, stderr is the console. */ 2775 if ( 2776 # ifdef UNIX 2777 # ifdef MACOS_X_UNIX 2778 (isatty(2) && strcmp("/dev/console", ttyname(2)) != 0) 2779 # else 2780 isatty(2) 2781 # endif 2782 # ifdef FEAT_GUI 2783 || 2784 # endif 2785 # endif 2786 # ifdef FEAT_GUI 2787 !(gui.in_use || gui.starting) 2788 # endif 2789 ) 2790 { 2791 printf("%s", str); 2792 return; 2793 } 2794 # endif 2795 mch_errmsg(str); 2796 } 2797 #endif /* USE_MCH_ERRMSG */ 2798 2799 /* 2800 * Put a character on the screen at the current message position and advance 2801 * to the next position. Only for printable ASCII! 2802 */ 2803 static void 2804 msg_screen_putchar(c, attr) 2805 int c; 2806 int attr; 2807 { 2808 msg_didout = TRUE; /* remember that line is not empty */ 2809 screen_putchar(c, msg_row, msg_col, attr); 2810 #ifdef FEAT_RIGHTLEFT 2811 if (cmdmsg_rl) 2812 { 2813 if (--msg_col == 0) 2814 { 2815 msg_col = Columns; 2816 ++msg_row; 2817 } 2818 } 2819 else 2820 #endif 2821 { 2822 if (++msg_col >= Columns) 2823 { 2824 msg_col = 0; 2825 ++msg_row; 2826 } 2827 } 2828 } 2829 2830 void 2831 msg_moremsg(full) 2832 int full; 2833 { 2834 int attr; 2835 char_u *s = (char_u *)_("-- More --"); 2836 2837 attr = hl_attr(HLF_M); 2838 screen_puts(s, (int)Rows - 1, 0, attr); 2839 if (full) 2840 screen_puts((char_u *) 2841 _(" SPACE/d/j: screen/page/line down, b/u/k: up, q: quit "), 2842 (int)Rows - 1, vim_strsize(s), attr); 2843 } 2844 2845 /* 2846 * Repeat the message for the current mode: ASKMORE, EXTERNCMD, CONFIRM or 2847 * exmode_active. 2848 */ 2849 void 2850 repeat_message() 2851 { 2852 if (State == ASKMORE) 2853 { 2854 msg_moremsg(TRUE); /* display --more-- message again */ 2855 msg_row = Rows - 1; 2856 } 2857 #ifdef FEAT_CON_DIALOG 2858 else if (State == CONFIRM) 2859 { 2860 display_confirm_msg(); /* display ":confirm" message again */ 2861 msg_row = Rows - 1; 2862 } 2863 #endif 2864 else if (State == EXTERNCMD) 2865 { 2866 windgoto(msg_row, msg_col); /* put cursor back */ 2867 } 2868 else if (State == HITRETURN || State == SETWSIZE) 2869 { 2870 if (msg_row == Rows - 1) 2871 { 2872 /* Avoid drawing the "hit-enter" prompt below the previous one, 2873 * overwrite it. Esp. useful when regaining focus and a 2874 * FocusGained autocmd exists but didn't draw anything. */ 2875 msg_didout = FALSE; 2876 msg_col = 0; 2877 msg_clr_eos(); 2878 } 2879 hit_return_msg(); 2880 msg_row = Rows - 1; 2881 } 2882 } 2883 2884 /* 2885 * msg_check_screen - check if the screen is initialized. 2886 * Also check msg_row and msg_col, if they are too big it may cause a crash. 2887 * While starting the GUI the terminal codes will be set for the GUI, but the 2888 * output goes to the terminal. Don't use the terminal codes then. 2889 */ 2890 static int 2891 msg_check_screen() 2892 { 2893 if (!full_screen || !screen_valid(FALSE)) 2894 return FALSE; 2895 2896 if (msg_row >= Rows) 2897 msg_row = Rows - 1; 2898 if (msg_col >= Columns) 2899 msg_col = Columns - 1; 2900 return TRUE; 2901 } 2902 2903 /* 2904 * Clear from current message position to end of screen. 2905 * Skip this when ":silent" was used, no need to clear for redirection. 2906 */ 2907 void 2908 msg_clr_eos() 2909 { 2910 if (msg_silent == 0) 2911 msg_clr_eos_force(); 2912 } 2913 2914 /* 2915 * Clear from current message position to end of screen. 2916 * Note: msg_col is not updated, so we remember the end of the message 2917 * for msg_check(). 2918 */ 2919 void 2920 msg_clr_eos_force() 2921 { 2922 if (msg_use_printf()) 2923 { 2924 if (full_screen) /* only when termcap codes are valid */ 2925 { 2926 if (*T_CD) 2927 out_str(T_CD); /* clear to end of display */ 2928 else if (*T_CE) 2929 out_str(T_CE); /* clear to end of line */ 2930 } 2931 } 2932 else 2933 { 2934 #ifdef FEAT_RIGHTLEFT 2935 if (cmdmsg_rl) 2936 { 2937 screen_fill(msg_row, msg_row + 1, 0, msg_col + 1, ' ', ' ', 0); 2938 screen_fill(msg_row + 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2939 } 2940 else 2941 #endif 2942 { 2943 screen_fill(msg_row, msg_row + 1, msg_col, (int)Columns, 2944 ' ', ' ', 0); 2945 screen_fill(msg_row + 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2946 } 2947 } 2948 } 2949 2950 /* 2951 * Clear the command line. 2952 */ 2953 void 2954 msg_clr_cmdline() 2955 { 2956 msg_row = cmdline_row; 2957 msg_col = 0; 2958 msg_clr_eos_force(); 2959 } 2960 2961 /* 2962 * end putting a message on the screen 2963 * call wait_return if the message does not fit in the available space 2964 * return TRUE if wait_return not called. 2965 */ 2966 int 2967 msg_end() 2968 { 2969 /* 2970 * if the string is larger than the window, 2971 * or the ruler option is set and we run into it, 2972 * we have to redraw the window. 2973 * Do not do this if we are abandoning the file or editing the command line. 2974 */ 2975 if (!exiting && need_wait_return && !(State & CMDLINE)) 2976 { 2977 wait_return(FALSE); 2978 return FALSE; 2979 } 2980 out_flush(); 2981 return TRUE; 2982 } 2983 2984 /* 2985 * If the written message runs into the shown command or ruler, we have to 2986 * wait for hit-return and redraw the window later. 2987 */ 2988 void 2989 msg_check() 2990 { 2991 if (msg_row == Rows - 1 && msg_col >= sc_col) 2992 { 2993 need_wait_return = TRUE; 2994 redraw_cmdline = TRUE; 2995 } 2996 } 2997 2998 /* 2999 * May write a string to the redirection file. 3000 * When "maxlen" is -1 write the whole string, otherwise up to "maxlen" bytes. 3001 */ 3002 static void 3003 redir_write(str, maxlen) 3004 char_u *str; 3005 int maxlen; 3006 { 3007 char_u *s = str; 3008 static int cur_col = 0; 3009 3010 /* Don't do anything for displaying prompts and the like. */ 3011 if (redir_off) 3012 return; 3013 3014 /* 3015 * If 'verbosefile' is set write message in that file. 3016 * Must come before the rest because of updating "msg_col". 3017 */ 3018 if (*p_vfile != NUL) 3019 verbose_write(s, maxlen); 3020 3021 if (redir_fd != NULL 3022 #ifdef FEAT_EVAL 3023 || redir_reg || redir_vname 3024 #endif 3025 ) 3026 { 3027 /* If the string doesn't start with CR or NL, go to msg_col */ 3028 if (*s != '\n' && *s != '\r') 3029 { 3030 while (cur_col < msg_col) 3031 { 3032 #ifdef FEAT_EVAL 3033 if (redir_reg) 3034 write_reg_contents(redir_reg, (char_u *)" ", -1, TRUE); 3035 else if (redir_vname) 3036 var_redir_str((char_u *)" ", -1); 3037 else if (redir_fd) 3038 #endif 3039 fputs(" ", redir_fd); 3040 ++cur_col; 3041 } 3042 } 3043 3044 #ifdef FEAT_EVAL 3045 if (redir_reg) 3046 write_reg_contents(redir_reg, s, maxlen, TRUE); 3047 if (redir_vname) 3048 var_redir_str(s, maxlen); 3049 #endif 3050 3051 /* Adjust the current column */ 3052 while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen)) 3053 { 3054 #ifdef FEAT_EVAL 3055 if (!redir_reg && !redir_vname && redir_fd != NULL) 3056 #endif 3057 putc(*s, redir_fd); 3058 if (*s == '\r' || *s == '\n') 3059 cur_col = 0; 3060 else if (*s == '\t') 3061 cur_col += (8 - cur_col % 8); 3062 else 3063 ++cur_col; 3064 ++s; 3065 } 3066 3067 if (msg_silent != 0) /* should update msg_col */ 3068 msg_col = cur_col; 3069 } 3070 } 3071 3072 /* 3073 * Before giving verbose message. 3074 * Must always be called paired with verbose_leave()! 3075 */ 3076 void 3077 verbose_enter() 3078 { 3079 if (*p_vfile != NUL) 3080 ++msg_silent; 3081 } 3082 3083 /* 3084 * After giving verbose message. 3085 * Must always be called paired with verbose_enter()! 3086 */ 3087 void 3088 verbose_leave() 3089 { 3090 if (*p_vfile != NUL) 3091 if (--msg_silent < 0) 3092 msg_silent = 0; 3093 } 3094 3095 /* 3096 * Like verbose_enter() and set msg_scroll when displaying the message. 3097 */ 3098 void 3099 verbose_enter_scroll() 3100 { 3101 if (*p_vfile != NUL) 3102 ++msg_silent; 3103 else 3104 /* always scroll up, don't overwrite */ 3105 msg_scroll = TRUE; 3106 } 3107 3108 /* 3109 * Like verbose_leave() and set cmdline_row when displaying the message. 3110 */ 3111 void 3112 verbose_leave_scroll() 3113 { 3114 if (*p_vfile != NUL) 3115 { 3116 if (--msg_silent < 0) 3117 msg_silent = 0; 3118 } 3119 else 3120 cmdline_row = msg_row; 3121 } 3122 3123 static FILE *verbose_fd = NULL; 3124 static int verbose_did_open = FALSE; 3125 3126 /* 3127 * Called when 'verbosefile' is set: stop writing to the file. 3128 */ 3129 void 3130 verbose_stop() 3131 { 3132 if (verbose_fd != NULL) 3133 { 3134 fclose(verbose_fd); 3135 verbose_fd = NULL; 3136 } 3137 verbose_did_open = FALSE; 3138 } 3139 3140 /* 3141 * Open the file 'verbosefile'. 3142 * Return FAIL or OK. 3143 */ 3144 int 3145 verbose_open() 3146 { 3147 if (verbose_fd == NULL && !verbose_did_open) 3148 { 3149 /* Only give the error message once. */ 3150 verbose_did_open = TRUE; 3151 3152 verbose_fd = mch_fopen((char *)p_vfile, "a"); 3153 if (verbose_fd == NULL) 3154 { 3155 EMSG2(_(e_notopen), p_vfile); 3156 return FAIL; 3157 } 3158 } 3159 return OK; 3160 } 3161 3162 /* 3163 * Write a string to 'verbosefile'. 3164 * When "maxlen" is -1 write the whole string, otherwise up to "maxlen" bytes. 3165 */ 3166 static void 3167 verbose_write(str, maxlen) 3168 char_u *str; 3169 int maxlen; 3170 { 3171 char_u *s = str; 3172 static int cur_col = 0; 3173 3174 /* Open the file when called the first time. */ 3175 if (verbose_fd == NULL) 3176 verbose_open(); 3177 3178 if (verbose_fd != NULL) 3179 { 3180 /* If the string doesn't start with CR or NL, go to msg_col */ 3181 if (*s != '\n' && *s != '\r') 3182 { 3183 while (cur_col < msg_col) 3184 { 3185 fputs(" ", verbose_fd); 3186 ++cur_col; 3187 } 3188 } 3189 3190 /* Adjust the current column */ 3191 while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen)) 3192 { 3193 putc(*s, verbose_fd); 3194 if (*s == '\r' || *s == '\n') 3195 cur_col = 0; 3196 else if (*s == '\t') 3197 cur_col += (8 - cur_col % 8); 3198 else 3199 ++cur_col; 3200 ++s; 3201 } 3202 } 3203 } 3204 3205 /* 3206 * Give a warning message (for searching). 3207 * Use 'w' highlighting and may repeat the message after redrawing 3208 */ 3209 void 3210 give_warning(message, hl) 3211 char_u *message; 3212 int hl; 3213 { 3214 /* Don't do this for ":silent". */ 3215 if (msg_silent != 0) 3216 return; 3217 3218 /* Don't want a hit-enter prompt here. */ 3219 ++no_wait_return; 3220 3221 #ifdef FEAT_EVAL 3222 set_vim_var_string(VV_WARNINGMSG, message, -1); 3223 #endif 3224 vim_free(keep_msg); 3225 keep_msg = NULL; 3226 if (hl) 3227 keep_msg_attr = hl_attr(HLF_W); 3228 else 3229 keep_msg_attr = 0; 3230 if (msg_attr(message, keep_msg_attr) && msg_scrolled == 0) 3231 set_keep_msg(message, keep_msg_attr); 3232 msg_didout = FALSE; /* overwrite this message */ 3233 msg_nowait = TRUE; /* don't wait for this message */ 3234 msg_col = 0; 3235 3236 --no_wait_return; 3237 } 3238 3239 /* 3240 * Advance msg cursor to column "col". 3241 */ 3242 void 3243 msg_advance(col) 3244 int col; 3245 { 3246 if (msg_silent != 0) /* nothing to advance to */ 3247 { 3248 msg_col = col; /* for redirection, may fill it up later */ 3249 return; 3250 } 3251 if (col >= Columns) /* not enough room */ 3252 col = Columns - 1; 3253 #ifdef FEAT_RIGHTLEFT 3254 if (cmdmsg_rl) 3255 while (msg_col > Columns - col) 3256 msg_putchar(' '); 3257 else 3258 #endif 3259 while (msg_col < col) 3260 msg_putchar(' '); 3261 } 3262 3263 #if defined(FEAT_CON_DIALOG) || defined(PROTO) 3264 /* 3265 * Used for "confirm()" function, and the :confirm command prefix. 3266 * Versions which haven't got flexible dialogs yet, and console 3267 * versions, get this generic handler which uses the command line. 3268 * 3269 * type = one of: 3270 * VIM_QUESTION, VIM_INFO, VIM_WARNING, VIM_ERROR or VIM_GENERIC 3271 * title = title string (can be NULL for default) 3272 * (neither used in console dialogs at the moment) 3273 * 3274 * Format of the "buttons" string: 3275 * "Button1Name\nButton2Name\nButton3Name" 3276 * The first button should normally be the default/accept 3277 * The second button should be the 'Cancel' button 3278 * Other buttons- use your imagination! 3279 * A '&' in a button name becomes a shortcut, so each '&' should be before a 3280 * different letter. 3281 */ 3282 /* ARGSUSED */ 3283 int 3284 do_dialog(type, title, message, buttons, dfltbutton, textfield) 3285 int type; 3286 char_u *title; 3287 char_u *message; 3288 char_u *buttons; 3289 int dfltbutton; 3290 char_u *textfield; /* IObuff for inputdialog(), NULL otherwise */ 3291 { 3292 int oldState; 3293 int retval = 0; 3294 char_u *hotkeys; 3295 int c; 3296 int i; 3297 3298 #ifndef NO_CONSOLE 3299 /* Don't output anything in silent mode ("ex -s") */ 3300 if (silent_mode) 3301 return dfltbutton; /* return default option */ 3302 #endif 3303 3304 #ifdef FEAT_GUI_DIALOG 3305 /* When GUI is running and 'c' not in 'guioptions', use the GUI dialog */ 3306 if (gui.in_use && vim_strchr(p_go, GO_CONDIALOG) == NULL) 3307 { 3308 c = gui_mch_dialog(type, title, message, buttons, dfltbutton, 3309 textfield); 3310 msg_end_prompt(); 3311 3312 /* Flush output to avoid that further messages and redrawing is done 3313 * in the wrong order. */ 3314 out_flush(); 3315 gui_mch_update(); 3316 3317 return c; 3318 } 3319 #endif 3320 3321 oldState = State; 3322 State = CONFIRM; 3323 #ifdef FEAT_MOUSE 3324 setmouse(); 3325 #endif 3326 3327 /* 3328 * Since we wait for a keypress, don't make the 3329 * user press RETURN as well afterwards. 3330 */ 3331 ++no_wait_return; 3332 hotkeys = msg_show_console_dialog(message, buttons, dfltbutton); 3333 3334 if (hotkeys != NULL) 3335 { 3336 for (;;) 3337 { 3338 /* Get a typed character directly from the user. */ 3339 c = get_keystroke(); 3340 switch (c) 3341 { 3342 case CAR: /* User accepts default option */ 3343 case NL: 3344 retval = dfltbutton; 3345 break; 3346 case Ctrl_C: /* User aborts/cancels */ 3347 case ESC: 3348 retval = 0; 3349 break; 3350 default: /* Could be a hotkey? */ 3351 if (c < 0) /* special keys are ignored here */ 3352 continue; 3353 /* Make the character lowercase, as chars in "hotkeys" are. */ 3354 c = MB_TOLOWER(c); 3355 retval = 1; 3356 for (i = 0; hotkeys[i]; ++i) 3357 { 3358 #ifdef FEAT_MBYTE 3359 if (has_mbyte) 3360 { 3361 if ((*mb_ptr2char)(hotkeys + i) == c) 3362 break; 3363 i += (*mb_ptr2len)(hotkeys + i) - 1; 3364 } 3365 else 3366 #endif 3367 if (hotkeys[i] == c) 3368 break; 3369 ++retval; 3370 } 3371 if (hotkeys[i]) 3372 break; 3373 /* No hotkey match, so keep waiting */ 3374 continue; 3375 } 3376 break; 3377 } 3378 3379 vim_free(hotkeys); 3380 } 3381 3382 State = oldState; 3383 #ifdef FEAT_MOUSE 3384 setmouse(); 3385 #endif 3386 --no_wait_return; 3387 msg_end_prompt(); 3388 3389 return retval; 3390 } 3391 3392 static int copy_char __ARGS((char_u *from, char_u *to, int lowercase)); 3393 3394 /* 3395 * Copy one character from "*from" to "*to", taking care of multi-byte 3396 * characters. Return the length of the character in bytes. 3397 */ 3398 static int 3399 copy_char(from, to, lowercase) 3400 char_u *from; 3401 char_u *to; 3402 int lowercase; /* make character lower case */ 3403 { 3404 #ifdef FEAT_MBYTE 3405 int len; 3406 int c; 3407 3408 if (has_mbyte) 3409 { 3410 if (lowercase) 3411 { 3412 c = MB_TOLOWER((*mb_ptr2char)(from)); 3413 return (*mb_char2bytes)(c, to); 3414 } 3415 else 3416 { 3417 len = (*mb_ptr2len)(from); 3418 mch_memmove(to, from, (size_t)len); 3419 return len; 3420 } 3421 } 3422 else 3423 #endif 3424 { 3425 if (lowercase) 3426 *to = (char_u)TOLOWER_LOC(*from); 3427 else 3428 *to = *from; 3429 return 1; 3430 } 3431 } 3432 3433 /* 3434 * Format the dialog string, and display it at the bottom of 3435 * the screen. Return a string of hotkey chars (if defined) for 3436 * each 'button'. If a button has no hotkey defined, the first character of 3437 * the button is used. 3438 * The hotkeys can be multi-byte characters, but without combining chars. 3439 * 3440 * Returns an allocated string with hotkeys, or NULL for error. 3441 */ 3442 static char_u * 3443 msg_show_console_dialog(message, buttons, dfltbutton) 3444 char_u *message; 3445 char_u *buttons; 3446 int dfltbutton; 3447 { 3448 int len = 0; 3449 #ifdef FEAT_MBYTE 3450 # define HOTK_LEN (has_mbyte ? MB_MAXBYTES : 1) 3451 #else 3452 # define HOTK_LEN 1 3453 #endif 3454 int lenhotkey = HOTK_LEN; /* count first button */ 3455 char_u *hotk = NULL; 3456 char_u *msgp = NULL; 3457 char_u *hotkp = NULL; 3458 char_u *r; 3459 int copy; 3460 #define HAS_HOTKEY_LEN 30 3461 char_u has_hotkey[HAS_HOTKEY_LEN]; 3462 int first_hotkey = FALSE; /* first char of button is hotkey */ 3463 int idx; 3464 3465 has_hotkey[0] = FALSE; 3466 3467 /* 3468 * First loop: compute the size of memory to allocate. 3469 * Second loop: copy to the allocated memory. 3470 */ 3471 for (copy = 0; copy <= 1; ++copy) 3472 { 3473 r = buttons; 3474 idx = 0; 3475 while (*r) 3476 { 3477 if (*r == DLG_BUTTON_SEP) 3478 { 3479 if (copy) 3480 { 3481 *msgp++ = ','; 3482 *msgp++ = ' '; /* '\n' -> ', ' */ 3483 3484 /* advance to next hotkey and set default hotkey */ 3485 #ifdef FEAT_MBYTE 3486 if (has_mbyte) 3487 hotkp += STRLEN(hotkp); 3488 else 3489 #endif 3490 ++hotkp; 3491 hotkp[copy_char(r + 1, hotkp, TRUE)] = NUL; 3492 if (dfltbutton) 3493 --dfltbutton; 3494 3495 /* If no hotkey is specified first char is used. */ 3496 if (idx < HAS_HOTKEY_LEN - 1 && !has_hotkey[++idx]) 3497 first_hotkey = TRUE; 3498 } 3499 else 3500 { 3501 len += 3; /* '\n' -> ', '; 'x' -> '(x)' */ 3502 lenhotkey += HOTK_LEN; /* each button needs a hotkey */ 3503 if (idx < HAS_HOTKEY_LEN - 1) 3504 has_hotkey[++idx] = FALSE; 3505 } 3506 } 3507 else if (*r == DLG_HOTKEY_CHAR || first_hotkey) 3508 { 3509 if (*r == DLG_HOTKEY_CHAR) 3510 ++r; 3511 first_hotkey = FALSE; 3512 if (copy) 3513 { 3514 if (*r == DLG_HOTKEY_CHAR) /* '&&a' -> '&a' */ 3515 *msgp++ = *r; 3516 else 3517 { 3518 /* '&a' -> '[a]' */ 3519 *msgp++ = (dfltbutton == 1) ? '[' : '('; 3520 msgp += copy_char(r, msgp, FALSE); 3521 *msgp++ = (dfltbutton == 1) ? ']' : ')'; 3522 3523 /* redefine hotkey */ 3524 hotkp[copy_char(r, hotkp, TRUE)] = NUL; 3525 } 3526 } 3527 else 3528 { 3529 ++len; /* '&a' -> '[a]' */ 3530 if (idx < HAS_HOTKEY_LEN - 1) 3531 has_hotkey[idx] = TRUE; 3532 } 3533 } 3534 else 3535 { 3536 /* everything else copy literally */ 3537 if (copy) 3538 msgp += copy_char(r, msgp, FALSE); 3539 } 3540 3541 /* advance to the next character */ 3542 mb_ptr_adv(r); 3543 } 3544 3545 if (copy) 3546 { 3547 *msgp++ = ':'; 3548 *msgp++ = ' '; 3549 *msgp = NUL; 3550 } 3551 else 3552 { 3553 len += (int)(STRLEN(message) 3554 + 2 /* for the NL's */ 3555 + STRLEN(buttons) 3556 + 3); /* for the ": " and NUL */ 3557 lenhotkey++; /* for the NUL */ 3558 3559 /* If no hotkey is specified first char is used. */ 3560 if (!has_hotkey[0]) 3561 { 3562 first_hotkey = TRUE; 3563 len += 2; /* "x" -> "[x]" */ 3564 } 3565 3566 /* 3567 * Now allocate and load the strings 3568 */ 3569 vim_free(confirm_msg); 3570 confirm_msg = alloc(len); 3571 if (confirm_msg == NULL) 3572 return NULL; 3573 *confirm_msg = NUL; 3574 hotk = alloc(lenhotkey); 3575 if (hotk == NULL) 3576 return NULL; 3577 3578 *confirm_msg = '\n'; 3579 STRCPY(confirm_msg + 1, message); 3580 3581 msgp = confirm_msg + 1 + STRLEN(message); 3582 hotkp = hotk; 3583 3584 /* Define first default hotkey. Keep the hotkey string NUL 3585 * terminated to avoid reading past the end. */ 3586 hotkp[copy_char(buttons, hotkp, TRUE)] = NUL; 3587 3588 /* Remember where the choices start, displaying starts here when 3589 * "hotkp" typed at the more prompt. */ 3590 confirm_msg_tail = msgp; 3591 *msgp++ = '\n'; 3592 } 3593 } 3594 3595 display_confirm_msg(); 3596 return hotk; 3597 } 3598 3599 /* 3600 * Display the ":confirm" message. Also called when screen resized. 3601 */ 3602 void 3603 display_confirm_msg() 3604 { 3605 /* avoid that 'q' at the more prompt truncates the message here */ 3606 ++confirm_msg_used; 3607 if (confirm_msg != NULL) 3608 msg_puts_attr(confirm_msg, hl_attr(HLF_M)); 3609 --confirm_msg_used; 3610 } 3611 3612 #endif /* FEAT_CON_DIALOG */ 3613 3614 #if defined(FEAT_CON_DIALOG) || defined(FEAT_GUI_DIALOG) 3615 3616 int 3617 vim_dialog_yesno(type, title, message, dflt) 3618 int type; 3619 char_u *title; 3620 char_u *message; 3621 int dflt; 3622 { 3623 if (do_dialog(type, 3624 title == NULL ? (char_u *)_("Question") : title, 3625 message, 3626 (char_u *)_("&Yes\n&No"), dflt, NULL) == 1) 3627 return VIM_YES; 3628 return VIM_NO; 3629 } 3630 3631 int 3632 vim_dialog_yesnocancel(type, title, message, dflt) 3633 int type; 3634 char_u *title; 3635 char_u *message; 3636 int dflt; 3637 { 3638 switch (do_dialog(type, 3639 title == NULL ? (char_u *)_("Question") : title, 3640 message, 3641 (char_u *)_("&Yes\n&No\n&Cancel"), dflt, NULL)) 3642 { 3643 case 1: return VIM_YES; 3644 case 2: return VIM_NO; 3645 } 3646 return VIM_CANCEL; 3647 } 3648 3649 int 3650 vim_dialog_yesnoallcancel(type, title, message, dflt) 3651 int type; 3652 char_u *title; 3653 char_u *message; 3654 int dflt; 3655 { 3656 switch (do_dialog(type, 3657 title == NULL ? (char_u *)"Question" : title, 3658 message, 3659 (char_u *)_("&Yes\n&No\nSave &All\n&Discard All\n&Cancel"), 3660 dflt, NULL)) 3661 { 3662 case 1: return VIM_YES; 3663 case 2: return VIM_NO; 3664 case 3: return VIM_ALL; 3665 case 4: return VIM_DISCARDALL; 3666 } 3667 return VIM_CANCEL; 3668 } 3669 3670 #endif /* FEAT_GUI_DIALOG || FEAT_CON_DIALOG */ 3671 3672 #if defined(FEAT_BROWSE) || defined(PROTO) 3673 /* 3674 * Generic browse function. Calls gui_mch_browse() when possible. 3675 * Later this may pop-up a non-GUI file selector (external command?). 3676 */ 3677 char_u * 3678 do_browse(flags, title, dflt, ext, initdir, filter, buf) 3679 int flags; /* BROWSE_SAVE and BROWSE_DIR */ 3680 char_u *title; /* title for the window */ 3681 char_u *dflt; /* default file name (may include directory) */ 3682 char_u *ext; /* extension added */ 3683 char_u *initdir; /* initial directory, NULL for current dir or 3684 when using path from "dflt" */ 3685 char_u *filter; /* file name filter */ 3686 buf_T *buf; /* buffer to read/write for */ 3687 { 3688 char_u *fname; 3689 static char_u *last_dir = NULL; /* last used directory */ 3690 char_u *tofree = NULL; 3691 int save_browse = cmdmod.browse; 3692 3693 /* Must turn off browse to avoid that autocommands will get the 3694 * flag too! */ 3695 cmdmod.browse = FALSE; 3696 3697 if (title == NULL || *title == NUL) 3698 { 3699 if (flags & BROWSE_DIR) 3700 title = (char_u *)_("Select Directory dialog"); 3701 else if (flags & BROWSE_SAVE) 3702 title = (char_u *)_("Save File dialog"); 3703 else 3704 title = (char_u *)_("Open File dialog"); 3705 } 3706 3707 /* When no directory specified, use default file name, default dir, buffer 3708 * dir, last dir or current dir */ 3709 if ((initdir == NULL || *initdir == NUL) && dflt != NULL && *dflt != NUL) 3710 { 3711 if (mch_isdir(dflt)) /* default file name is a directory */ 3712 { 3713 initdir = dflt; 3714 dflt = NULL; 3715 } 3716 else if (gettail(dflt) != dflt) /* default file name includes a path */ 3717 { 3718 tofree = vim_strsave(dflt); 3719 if (tofree != NULL) 3720 { 3721 initdir = tofree; 3722 *gettail(initdir) = NUL; 3723 dflt = gettail(dflt); 3724 } 3725 } 3726 } 3727 3728 if (initdir == NULL || *initdir == NUL) 3729 { 3730 /* When 'browsedir' is a directory, use it */ 3731 if (STRCMP(p_bsdir, "last") != 0 3732 && STRCMP(p_bsdir, "buffer") != 0 3733 && STRCMP(p_bsdir, "current") != 0 3734 && mch_isdir(p_bsdir)) 3735 initdir = p_bsdir; 3736 /* When saving or 'browsedir' is "buffer", use buffer fname */ 3737 else if (((flags & BROWSE_SAVE) || *p_bsdir == 'b') 3738 && buf != NULL && buf->b_ffname != NULL) 3739 { 3740 if (dflt == NULL || *dflt == NUL) 3741 dflt = gettail(curbuf->b_ffname); 3742 tofree = vim_strsave(curbuf->b_ffname); 3743 if (tofree != NULL) 3744 { 3745 initdir = tofree; 3746 *gettail(initdir) = NUL; 3747 } 3748 } 3749 /* When 'browsedir' is "last", use dir from last browse */ 3750 else if (*p_bsdir == 'l') 3751 initdir = last_dir; 3752 /* When 'browsedir is "current", use current directory. This is the 3753 * default already, leave initdir empty. */ 3754 } 3755 3756 # ifdef FEAT_GUI 3757 if (gui.in_use) /* when this changes, also adjust f_has()! */ 3758 { 3759 if (filter == NULL 3760 # ifdef FEAT_EVAL 3761 && (filter = get_var_value((char_u *)"b:browsefilter")) == NULL 3762 && (filter = get_var_value((char_u *)"g:browsefilter")) == NULL 3763 # endif 3764 ) 3765 filter = BROWSE_FILTER_DEFAULT; 3766 if (flags & BROWSE_DIR) 3767 { 3768 # if defined(HAVE_GTK2) || defined(WIN3264) 3769 /* For systems that have a directory dialog. */ 3770 fname = gui_mch_browsedir(title, initdir); 3771 # else 3772 /* Generic solution for selecting a directory: select a file and 3773 * remove the file name. */ 3774 fname = gui_mch_browse(0, title, dflt, ext, initdir, (char_u *)""); 3775 # endif 3776 # if !defined(HAVE_GTK2) 3777 /* Win32 adds a dummy file name, others return an arbitrary file 3778 * name. GTK+ 2 returns only the directory, */ 3779 if (fname != NULL && *fname != NUL && !mch_isdir(fname)) 3780 { 3781 /* Remove the file name. */ 3782 char_u *tail = gettail_sep(fname); 3783 3784 if (tail == fname) 3785 *tail++ = '.'; /* use current dir */ 3786 *tail = NUL; 3787 } 3788 # endif 3789 } 3790 else 3791 fname = gui_mch_browse(flags & BROWSE_SAVE, 3792 title, dflt, ext, initdir, filter); 3793 3794 /* We hang around in the dialog for a while, the user might do some 3795 * things to our files. The Win32 dialog allows deleting or renaming 3796 * a file, check timestamps. */ 3797 need_check_timestamps = TRUE; 3798 did_check_timestamps = FALSE; 3799 } 3800 else 3801 # endif 3802 { 3803 /* TODO: non-GUI file selector here */ 3804 EMSG(_("E338: Sorry, no file browser in console mode")); 3805 fname = NULL; 3806 } 3807 3808 /* keep the directory for next time */ 3809 if (fname != NULL) 3810 { 3811 vim_free(last_dir); 3812 last_dir = vim_strsave(fname); 3813 if (last_dir != NULL && !(flags & BROWSE_DIR)) 3814 { 3815 *gettail(last_dir) = NUL; 3816 if (*last_dir == NUL) 3817 { 3818 /* filename only returned, must be in current dir */ 3819 vim_free(last_dir); 3820 last_dir = alloc(MAXPATHL); 3821 if (last_dir != NULL) 3822 mch_dirname(last_dir, MAXPATHL); 3823 } 3824 } 3825 } 3826 3827 vim_free(tofree); 3828 cmdmod.browse = save_browse; 3829 3830 return fname; 3831 } 3832 #endif 3833 3834 #if defined(HAVE_STDARG_H) && defined(FEAT_EVAL) 3835 static char *e_printf = N_("E766: Insufficient arguments for printf()"); 3836 3837 static long tv_nr __ARGS((typval_T *tvs, int *idxp)); 3838 static char *tv_str __ARGS((typval_T *tvs, int *idxp)); 3839 # ifdef FEAT_FLOAT 3840 static double tv_float __ARGS((typval_T *tvs, int *idxp)); 3841 # endif 3842 3843 /* 3844 * Get number argument from "idxp" entry in "tvs". First entry is 1. 3845 */ 3846 static long 3847 tv_nr(tvs, idxp) 3848 typval_T *tvs; 3849 int *idxp; 3850 { 3851 int idx = *idxp - 1; 3852 long n = 0; 3853 int err = FALSE; 3854 3855 if (tvs[idx].v_type == VAR_UNKNOWN) 3856 EMSG(_(e_printf)); 3857 else 3858 { 3859 ++*idxp; 3860 n = get_tv_number_chk(&tvs[idx], &err); 3861 if (err) 3862 n = 0; 3863 } 3864 return n; 3865 } 3866 3867 /* 3868 * Get string argument from "idxp" entry in "tvs". First entry is 1. 3869 * Returns NULL for an error. 3870 */ 3871 static char * 3872 tv_str(tvs, idxp) 3873 typval_T *tvs; 3874 int *idxp; 3875 { 3876 int idx = *idxp - 1; 3877 char *s = NULL; 3878 3879 if (tvs[idx].v_type == VAR_UNKNOWN) 3880 EMSG(_(e_printf)); 3881 else 3882 { 3883 ++*idxp; 3884 s = (char *)get_tv_string_chk(&tvs[idx]); 3885 } 3886 return s; 3887 } 3888 3889 # ifdef FEAT_FLOAT 3890 /* 3891 * Get float argument from "idxp" entry in "tvs". First entry is 1. 3892 */ 3893 static double 3894 tv_float(tvs, idxp) 3895 typval_T *tvs; 3896 int *idxp; 3897 { 3898 int idx = *idxp - 1; 3899 double f = 0; 3900 3901 if (tvs[idx].v_type == VAR_UNKNOWN) 3902 EMSG(_(e_printf)); 3903 else 3904 { 3905 ++*idxp; 3906 if (tvs[idx].v_type == VAR_FLOAT) 3907 f = tvs[idx].vval.v_float; 3908 else 3909 EMSG(_("E807: Expected Float argument for printf()")); 3910 } 3911 return f; 3912 } 3913 # endif 3914 #endif 3915 3916 /* 3917 * This code was included to provide a portable vsnprintf() and snprintf(). 3918 * Some systems may provide their own, but we always use this one for 3919 * consistency. 3920 * 3921 * This code is based on snprintf.c - a portable implementation of snprintf 3922 * by Mark Martinec <[email protected]>, Version 2.2, 2000-10-06. 3923 * Included with permission. It was heavily modified to fit in Vim. 3924 * The original code, including useful comments, can be found here: 3925 * http://www.ijs.si/software/snprintf/ 3926 * 3927 * This snprintf() only supports the following conversion specifiers: 3928 * s, c, d, u, o, x, X, p (and synonyms: i, D, U, O - see below) 3929 * with flags: '-', '+', ' ', '0' and '#'. 3930 * An asterisk is supported for field width as well as precision. 3931 * 3932 * Limited support for floating point was added: 'f', 'e', 'E', 'g', 'G'. 3933 * 3934 * Length modifiers 'h' (short int) and 'l' (long int) are supported. 3935 * 'll' (long long int) is not supported. 3936 * 3937 * The locale is not used, the string is used as a byte string. This is only 3938 * relevant for double-byte encodings where the second byte may be '%'. 3939 * 3940 * It is permitted for "str_m" to be zero, and it is permitted to specify NULL 3941 * pointer for resulting string argument if "str_m" is zero (as per ISO C99). 3942 * 3943 * The return value is the number of characters which would be generated 3944 * for the given input, excluding the trailing null. If this value 3945 * is greater or equal to "str_m", not all characters from the result 3946 * have been stored in str, output bytes beyond the ("str_m"-1) -th character 3947 * are discarded. If "str_m" is greater than zero it is guaranteed 3948 * the resulting string will be null-terminated. 3949 */ 3950 3951 /* 3952 * When va_list is not supported we only define vim_snprintf(). 3953 * 3954 * vim_vsnprintf() can be invoked with either "va_list" or a list of 3955 * "typval_T". When the latter is not used it must be NULL. 3956 */ 3957 3958 /* When generating prototypes all of this is skipped, cproto doesn't 3959 * understand this. */ 3960 #ifndef PROTO 3961 # ifdef HAVE_STDARG_H 3962 int 3963 vim_snprintf(char *str, size_t str_m, char *fmt, ...) 3964 { 3965 va_list ap; 3966 int str_l; 3967 3968 va_start(ap, fmt); 3969 str_l = vim_vsnprintf(str, str_m, fmt, ap, NULL); 3970 va_end(ap); 3971 return str_l; 3972 } 3973 3974 int 3975 vim_vsnprintf(str, str_m, fmt, ap, tvs) 3976 # else 3977 /* clumsy way to work around missing va_list */ 3978 # 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) 3979 3980 /* VARARGS */ 3981 int 3982 #ifdef __BORLANDC__ 3983 _RTLENTRYF 3984 #endif 3985 vim_snprintf(str, str_m, fmt, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) 3986 # endif 3987 char *str; 3988 size_t str_m; 3989 char *fmt; 3990 # ifdef HAVE_STDARG_H 3991 va_list ap; 3992 typval_T *tvs; 3993 # else 3994 long a1, a2, a3, a4, a5, a6, a7, a8, a9, a10; 3995 # endif 3996 { 3997 size_t str_l = 0; 3998 char *p = fmt; 3999 int arg_idx = 1; 4000 4001 if (p == NULL) 4002 p = ""; 4003 while (*p != NUL) 4004 { 4005 if (*p != '%') 4006 { 4007 char *q = strchr(p + 1, '%'); 4008 size_t n = (q == NULL) ? STRLEN(p) : (q - p); 4009 4010 /* Copy up to the next '%' or NUL without any changes. */ 4011 if (str_l < str_m) 4012 { 4013 size_t avail = str_m - str_l; 4014 4015 mch_memmove(str + str_l, p, n > avail ? avail : n); 4016 } 4017 p += n; 4018 str_l += n; 4019 } 4020 else 4021 { 4022 size_t min_field_width = 0, precision = 0; 4023 int zero_padding = 0, precision_specified = 0, justify_left = 0; 4024 int alternate_form = 0, force_sign = 0; 4025 4026 /* If both the ' ' and '+' flags appear, the ' ' flag should be 4027 * ignored. */ 4028 int space_for_positive = 1; 4029 4030 /* allowed values: \0, h, l, L */ 4031 char length_modifier = '\0'; 4032 4033 /* temporary buffer for simple numeric->string conversion */ 4034 #ifdef FEAT_FLOAT 4035 # define TMP_LEN 350 /* On my system 1e308 is the biggest number possible. 4036 * That sounds reasonable to use as the maximum 4037 * printable. */ 4038 #else 4039 # define TMP_LEN 32 4040 #endif 4041 char tmp[TMP_LEN]; 4042 4043 /* string address in case of string argument */ 4044 char *str_arg; 4045 4046 /* natural field width of arg without padding and sign */ 4047 size_t str_arg_l; 4048 4049 /* unsigned char argument value - only defined for c conversion. 4050 * N.B. standard explicitly states the char argument for the c 4051 * conversion is unsigned */ 4052 unsigned char uchar_arg; 4053 4054 /* number of zeros to be inserted for numeric conversions as 4055 * required by the precision or minimal field width */ 4056 size_t number_of_zeros_to_pad = 0; 4057 4058 /* index into tmp where zero padding is to be inserted */ 4059 size_t zero_padding_insertion_ind = 0; 4060 4061 /* current conversion specifier character */ 4062 char fmt_spec = '\0'; 4063 4064 str_arg = NULL; 4065 p++; /* skip '%' */ 4066 4067 /* parse flags */ 4068 while (*p == '0' || *p == '-' || *p == '+' || *p == ' ' 4069 || *p == '#' || *p == '\'') 4070 { 4071 switch (*p) 4072 { 4073 case '0': zero_padding = 1; break; 4074 case '-': justify_left = 1; break; 4075 case '+': force_sign = 1; space_for_positive = 0; break; 4076 case ' ': force_sign = 1; 4077 /* If both the ' ' and '+' flags appear, the ' ' 4078 * flag should be ignored */ 4079 break; 4080 case '#': alternate_form = 1; break; 4081 case '\'': break; 4082 } 4083 p++; 4084 } 4085 /* If the '0' and '-' flags both appear, the '0' flag should be 4086 * ignored. */ 4087 4088 /* parse field width */ 4089 if (*p == '*') 4090 { 4091 int j; 4092 4093 p++; 4094 j = 4095 #ifndef HAVE_STDARG_H 4096 get_a_arg(arg_idx); 4097 #else 4098 # if defined(FEAT_EVAL) 4099 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4100 # endif 4101 va_arg(ap, int); 4102 #endif 4103 if (j >= 0) 4104 min_field_width = j; 4105 else 4106 { 4107 min_field_width = -j; 4108 justify_left = 1; 4109 } 4110 } 4111 else if (VIM_ISDIGIT((int)(*p))) 4112 { 4113 /* size_t could be wider than unsigned int; make sure we treat 4114 * argument like common implementations do */ 4115 unsigned int uj = *p++ - '0'; 4116 4117 while (VIM_ISDIGIT((int)(*p))) 4118 uj = 10 * uj + (unsigned int)(*p++ - '0'); 4119 min_field_width = uj; 4120 } 4121 4122 /* parse precision */ 4123 if (*p == '.') 4124 { 4125 p++; 4126 precision_specified = 1; 4127 if (*p == '*') 4128 { 4129 int j; 4130 4131 j = 4132 #ifndef HAVE_STDARG_H 4133 get_a_arg(arg_idx); 4134 #else 4135 # if defined(FEAT_EVAL) 4136 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4137 # endif 4138 va_arg(ap, int); 4139 #endif 4140 p++; 4141 if (j >= 0) 4142 precision = j; 4143 else 4144 { 4145 precision_specified = 0; 4146 precision = 0; 4147 } 4148 } 4149 else if (VIM_ISDIGIT((int)(*p))) 4150 { 4151 /* size_t could be wider than unsigned int; make sure we 4152 * treat argument like common implementations do */ 4153 unsigned int uj = *p++ - '0'; 4154 4155 while (VIM_ISDIGIT((int)(*p))) 4156 uj = 10 * uj + (unsigned int)(*p++ - '0'); 4157 precision = uj; 4158 } 4159 } 4160 4161 /* parse 'h', 'l' and 'll' length modifiers */ 4162 if (*p == 'h' || *p == 'l') 4163 { 4164 length_modifier = *p; 4165 p++; 4166 if (length_modifier == 'l' && *p == 'l') 4167 { 4168 /* double l = long long */ 4169 length_modifier = 'l'; /* treat it as a single 'l' */ 4170 p++; 4171 } 4172 } 4173 fmt_spec = *p; 4174 4175 /* common synonyms: */ 4176 switch (fmt_spec) 4177 { 4178 case 'i': fmt_spec = 'd'; break; 4179 case 'D': fmt_spec = 'd'; length_modifier = 'l'; break; 4180 case 'U': fmt_spec = 'u'; length_modifier = 'l'; break; 4181 case 'O': fmt_spec = 'o'; length_modifier = 'l'; break; 4182 case 'F': fmt_spec = 'f'; break; 4183 default: break; 4184 } 4185 4186 /* get parameter value, do initial processing */ 4187 switch (fmt_spec) 4188 { 4189 /* '%' and 'c' behave similar to 's' regarding flags and field 4190 * widths */ 4191 case '%': 4192 case 'c': 4193 case 's': 4194 length_modifier = '\0'; 4195 str_arg_l = 1; 4196 switch (fmt_spec) 4197 { 4198 case '%': 4199 str_arg = p; 4200 break; 4201 4202 case 'c': 4203 { 4204 int j; 4205 4206 j = 4207 #ifndef HAVE_STDARG_H 4208 get_a_arg(arg_idx); 4209 #else 4210 # if defined(FEAT_EVAL) 4211 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4212 # endif 4213 va_arg(ap, int); 4214 #endif 4215 /* standard demands unsigned char */ 4216 uchar_arg = (unsigned char)j; 4217 str_arg = (char *)&uchar_arg; 4218 break; 4219 } 4220 4221 case 's': 4222 str_arg = 4223 #ifndef HAVE_STDARG_H 4224 (char *)get_a_arg(arg_idx); 4225 #else 4226 # if defined(FEAT_EVAL) 4227 tvs != NULL ? tv_str(tvs, &arg_idx) : 4228 # endif 4229 va_arg(ap, char *); 4230 #endif 4231 if (str_arg == NULL) 4232 { 4233 str_arg = "[NULL]"; 4234 str_arg_l = 6; 4235 } 4236 /* make sure not to address string beyond the specified 4237 * precision !!! */ 4238 else if (!precision_specified) 4239 str_arg_l = strlen(str_arg); 4240 /* truncate string if necessary as requested by precision */ 4241 else if (precision == 0) 4242 str_arg_l = 0; 4243 else 4244 { 4245 /* Don't put the #if inside memchr(), it can be a 4246 * macro. */ 4247 #if SIZEOF_INT <= 2 4248 char *q = memchr(str_arg, '\0', precision); 4249 #else 4250 /* memchr on HP does not like n > 2^31 !!! */ 4251 char *q = memchr(str_arg, '\0', 4252 precision <= (size_t)0x7fffffffL ? precision 4253 : (size_t)0x7fffffffL); 4254 #endif 4255 str_arg_l = (q == NULL) ? precision : q - str_arg; 4256 } 4257 break; 4258 4259 default: 4260 break; 4261 } 4262 break; 4263 4264 case 'd': case 'u': case 'o': case 'x': case 'X': case 'p': 4265 { 4266 /* NOTE: the u, o, x, X and p conversion specifiers 4267 * imply the value is unsigned; d implies a signed 4268 * value */ 4269 4270 /* 0 if numeric argument is zero (or if pointer is 4271 * NULL for 'p'), +1 if greater than zero (or nonzero 4272 * for unsigned arguments), -1 if negative (unsigned 4273 * argument is never negative) */ 4274 int arg_sign = 0; 4275 4276 /* only defined for length modifier h, or for no 4277 * length modifiers */ 4278 int int_arg = 0; 4279 unsigned int uint_arg = 0; 4280 4281 /* only defined for length modifier l */ 4282 long int long_arg = 0; 4283 unsigned long int ulong_arg = 0; 4284 4285 /* pointer argument value -only defined for p 4286 * conversion */ 4287 void *ptr_arg = NULL; 4288 4289 if (fmt_spec == 'p') 4290 { 4291 length_modifier = '\0'; 4292 ptr_arg = 4293 #ifndef HAVE_STDARG_H 4294 (void *)get_a_arg(arg_idx); 4295 #else 4296 # if defined(FEAT_EVAL) 4297 tvs != NULL ? (void *)tv_str(tvs, &arg_idx) : 4298 # endif 4299 va_arg(ap, void *); 4300 #endif 4301 if (ptr_arg != NULL) 4302 arg_sign = 1; 4303 } 4304 else if (fmt_spec == 'd') 4305 { 4306 /* signed */ 4307 switch (length_modifier) 4308 { 4309 case '\0': 4310 case 'h': 4311 /* char and short arguments are passed as int. */ 4312 int_arg = 4313 #ifndef HAVE_STDARG_H 4314 get_a_arg(arg_idx); 4315 #else 4316 # if defined(FEAT_EVAL) 4317 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4318 # endif 4319 va_arg(ap, int); 4320 #endif 4321 if (int_arg > 0) 4322 arg_sign = 1; 4323 else if (int_arg < 0) 4324 arg_sign = -1; 4325 break; 4326 case 'l': 4327 long_arg = 4328 #ifndef HAVE_STDARG_H 4329 get_a_arg(arg_idx); 4330 #else 4331 # if defined(FEAT_EVAL) 4332 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4333 # endif 4334 va_arg(ap, long int); 4335 #endif 4336 if (long_arg > 0) 4337 arg_sign = 1; 4338 else if (long_arg < 0) 4339 arg_sign = -1; 4340 break; 4341 } 4342 } 4343 else 4344 { 4345 /* unsigned */ 4346 switch (length_modifier) 4347 { 4348 case '\0': 4349 case 'h': 4350 uint_arg = 4351 #ifndef HAVE_STDARG_H 4352 get_a_arg(arg_idx); 4353 #else 4354 # if defined(FEAT_EVAL) 4355 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4356 # endif 4357 va_arg(ap, unsigned int); 4358 #endif 4359 if (uint_arg != 0) 4360 arg_sign = 1; 4361 break; 4362 case 'l': 4363 ulong_arg = 4364 #ifndef HAVE_STDARG_H 4365 get_a_arg(arg_idx); 4366 #else 4367 # if defined(FEAT_EVAL) 4368 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4369 # endif 4370 va_arg(ap, unsigned long int); 4371 #endif 4372 if (ulong_arg != 0) 4373 arg_sign = 1; 4374 break; 4375 } 4376 } 4377 4378 str_arg = tmp; 4379 str_arg_l = 0; 4380 4381 /* NOTE: 4382 * For d, i, u, o, x, and X conversions, if precision is 4383 * specified, the '0' flag should be ignored. This is so 4384 * with Solaris 2.6, Digital UNIX 4.0, HPUX 10, Linux, 4385 * FreeBSD, NetBSD; but not with Perl. 4386 */ 4387 if (precision_specified) 4388 zero_padding = 0; 4389 if (fmt_spec == 'd') 4390 { 4391 if (force_sign && arg_sign >= 0) 4392 tmp[str_arg_l++] = space_for_positive ? ' ' : '+'; 4393 /* leave negative numbers for sprintf to handle, to 4394 * avoid handling tricky cases like (short int)-32768 */ 4395 } 4396 else if (alternate_form) 4397 { 4398 if (arg_sign != 0 4399 && (fmt_spec == 'x' || fmt_spec == 'X') ) 4400 { 4401 tmp[str_arg_l++] = '0'; 4402 tmp[str_arg_l++] = fmt_spec; 4403 } 4404 /* alternate form should have no effect for p 4405 * conversion, but ... */ 4406 } 4407 4408 zero_padding_insertion_ind = str_arg_l; 4409 if (!precision_specified) 4410 precision = 1; /* default precision is 1 */ 4411 if (precision == 0 && arg_sign == 0) 4412 { 4413 /* When zero value is formatted with an explicit 4414 * precision 0, the resulting formatted string is 4415 * empty (d, i, u, o, x, X, p). */ 4416 } 4417 else 4418 { 4419 char f[5]; 4420 int f_l = 0; 4421 4422 /* construct a simple format string for sprintf */ 4423 f[f_l++] = '%'; 4424 if (!length_modifier) 4425 ; 4426 else if (length_modifier == '2') 4427 { 4428 f[f_l++] = 'l'; 4429 f[f_l++] = 'l'; 4430 } 4431 else 4432 f[f_l++] = length_modifier; 4433 f[f_l++] = fmt_spec; 4434 f[f_l++] = '\0'; 4435 4436 if (fmt_spec == 'p') 4437 str_arg_l += sprintf(tmp + str_arg_l, f, ptr_arg); 4438 else if (fmt_spec == 'd') 4439 { 4440 /* signed */ 4441 switch (length_modifier) 4442 { 4443 case '\0': 4444 case 'h': str_arg_l += sprintf( 4445 tmp + str_arg_l, f, int_arg); 4446 break; 4447 case 'l': str_arg_l += sprintf( 4448 tmp + str_arg_l, f, long_arg); 4449 break; 4450 } 4451 } 4452 else 4453 { 4454 /* unsigned */ 4455 switch (length_modifier) 4456 { 4457 case '\0': 4458 case 'h': str_arg_l += sprintf( 4459 tmp + str_arg_l, f, uint_arg); 4460 break; 4461 case 'l': str_arg_l += sprintf( 4462 tmp + str_arg_l, f, ulong_arg); 4463 break; 4464 } 4465 } 4466 4467 /* include the optional minus sign and possible 4468 * "0x" in the region before the zero padding 4469 * insertion point */ 4470 if (zero_padding_insertion_ind < str_arg_l 4471 && tmp[zero_padding_insertion_ind] == '-') 4472 zero_padding_insertion_ind++; 4473 if (zero_padding_insertion_ind + 1 < str_arg_l 4474 && tmp[zero_padding_insertion_ind] == '0' 4475 && (tmp[zero_padding_insertion_ind + 1] == 'x' 4476 || tmp[zero_padding_insertion_ind + 1] == 'X')) 4477 zero_padding_insertion_ind += 2; 4478 } 4479 4480 { 4481 size_t num_of_digits = str_arg_l 4482 - zero_padding_insertion_ind; 4483 4484 if (alternate_form && fmt_spec == 'o' 4485 /* unless zero is already the first 4486 * character */ 4487 && !(zero_padding_insertion_ind < str_arg_l 4488 && tmp[zero_padding_insertion_ind] == '0')) 4489 { 4490 /* assure leading zero for alternate-form 4491 * octal numbers */ 4492 if (!precision_specified 4493 || precision < num_of_digits + 1) 4494 { 4495 /* precision is increased to force the 4496 * first character to be zero, except if a 4497 * zero value is formatted with an 4498 * explicit precision of zero */ 4499 precision = num_of_digits + 1; 4500 precision_specified = 1; 4501 } 4502 } 4503 /* zero padding to specified precision? */ 4504 if (num_of_digits < precision) 4505 number_of_zeros_to_pad = precision - num_of_digits; 4506 } 4507 /* zero padding to specified minimal field width? */ 4508 if (!justify_left && zero_padding) 4509 { 4510 int n = (int)(min_field_width - (str_arg_l 4511 + number_of_zeros_to_pad)); 4512 if (n > 0) 4513 number_of_zeros_to_pad += n; 4514 } 4515 break; 4516 } 4517 4518 #ifdef FEAT_FLOAT 4519 case 'f': 4520 case 'e': 4521 case 'E': 4522 case 'g': 4523 case 'G': 4524 { 4525 /* Floating point. */ 4526 double f; 4527 double abs_f; 4528 char format[40]; 4529 int l; 4530 int remove_trailing_zeroes = FALSE; 4531 4532 f = 4533 # ifndef HAVE_STDARG_H 4534 get_a_arg(arg_idx); 4535 # else 4536 # if defined(FEAT_EVAL) 4537 tvs != NULL ? tv_float(tvs, &arg_idx) : 4538 # endif 4539 va_arg(ap, double); 4540 # endif 4541 abs_f = f < 0 ? -f : f; 4542 4543 if (fmt_spec == 'g' || fmt_spec == 'G') 4544 { 4545 /* Would be nice to use %g directly, but it prints 4546 * "1.0" as "1", we don't want that. */ 4547 if ((abs_f >= 0.001 && abs_f < 10000000.0) 4548 || abs_f == 0.0) 4549 fmt_spec = 'f'; 4550 else 4551 fmt_spec = fmt_spec == 'g' ? 'e' : 'E'; 4552 remove_trailing_zeroes = TRUE; 4553 } 4554 4555 if (fmt_spec == 'f' && abs_f > 1.0e307) 4556 { 4557 /* Avoid a buffer overflow */ 4558 strcpy(tmp, "inf"); 4559 str_arg_l = 3; 4560 } 4561 else 4562 { 4563 format[0] = '%'; 4564 l = 1; 4565 if (precision_specified) 4566 { 4567 size_t max_prec = TMP_LEN - 10; 4568 4569 /* Make sure we don't get more digits than we 4570 * have room for. */ 4571 if (fmt_spec == 'f' && abs_f > 1.0) 4572 max_prec -= (size_t)log10(abs_f); 4573 if (precision > max_prec) 4574 precision = max_prec; 4575 l += sprintf(format + 1, ".%d", (int)precision); 4576 } 4577 format[l] = fmt_spec; 4578 format[l + 1] = NUL; 4579 str_arg_l = sprintf(tmp, format, f); 4580 4581 if (remove_trailing_zeroes) 4582 { 4583 int i; 4584 char *p; 4585 4586 /* Using %g or %G: remove superfluous zeroes. */ 4587 if (fmt_spec == 'f') 4588 p = tmp + str_arg_l - 1; 4589 else 4590 { 4591 p = (char *)vim_strchr((char_u *)tmp, 4592 fmt_spec == 'e' ? 'e' : 'E'); 4593 if (p != NULL) 4594 { 4595 /* Remove superfluous '+' and leading 4596 * zeroes from the exponent. */ 4597 if (p[1] == '+') 4598 { 4599 /* Change "1.0e+07" to "1.0e07" */ 4600 STRMOVE(p + 1, p + 2); 4601 --str_arg_l; 4602 } 4603 i = (p[1] == '-') ? 2 : 1; 4604 while (p[i] == '0') 4605 { 4606 /* Change "1.0e07" to "1.0e7" */ 4607 STRMOVE(p + i, p + i + 1); 4608 --str_arg_l; 4609 } 4610 --p; 4611 } 4612 } 4613 4614 if (p != NULL && !precision_specified) 4615 /* Remove trailing zeroes, but keep the one 4616 * just after a dot. */ 4617 while (p > tmp + 2 && *p == '0' && p[-1] != '.') 4618 { 4619 STRMOVE(p, p + 1); 4620 --p; 4621 --str_arg_l; 4622 } 4623 } 4624 else 4625 { 4626 char *p; 4627 4628 /* Be consistent: some printf("%e") use 1.0e+12 4629 * and some 1.0e+012. Remove one zero in the last 4630 * case. */ 4631 p = (char *)vim_strchr((char_u *)tmp, 4632 fmt_spec == 'e' ? 'e' : 'E'); 4633 if (p != NULL && (p[1] == '+' || p[1] == '-') 4634 && p[2] == '0' 4635 && vim_isdigit(p[3]) 4636 && vim_isdigit(p[4])) 4637 { 4638 STRMOVE(p + 2, p + 3); 4639 --str_arg_l; 4640 } 4641 } 4642 } 4643 str_arg = tmp; 4644 break; 4645 } 4646 #endif 4647 4648 default: 4649 /* unrecognized conversion specifier, keep format string 4650 * as-is */ 4651 zero_padding = 0; /* turn zero padding off for non-numeric 4652 conversion */ 4653 justify_left = 1; 4654 min_field_width = 0; /* reset flags */ 4655 4656 /* discard the unrecognized conversion, just keep * 4657 * the unrecognized conversion character */ 4658 str_arg = p; 4659 str_arg_l = 0; 4660 if (*p != NUL) 4661 str_arg_l++; /* include invalid conversion specifier 4662 unchanged if not at end-of-string */ 4663 break; 4664 } 4665 4666 if (*p != NUL) 4667 p++; /* step over the just processed conversion specifier */ 4668 4669 /* insert padding to the left as requested by min_field_width; 4670 * this does not include the zero padding in case of numerical 4671 * conversions*/ 4672 if (!justify_left) 4673 { 4674 /* left padding with blank or zero */ 4675 int pn = (int)(min_field_width - (str_arg_l + number_of_zeros_to_pad)); 4676 4677 if (pn > 0) 4678 { 4679 if (str_l < str_m) 4680 { 4681 size_t avail = str_m - str_l; 4682 4683 vim_memset(str + str_l, zero_padding ? '0' : ' ', 4684 (size_t)pn > avail ? avail : pn); 4685 } 4686 str_l += pn; 4687 } 4688 } 4689 4690 /* zero padding as requested by the precision or by the minimal 4691 * field width for numeric conversions required? */ 4692 if (number_of_zeros_to_pad == 0) 4693 { 4694 /* will not copy first part of numeric right now, * 4695 * force it to be copied later in its entirety */ 4696 zero_padding_insertion_ind = 0; 4697 } 4698 else 4699 { 4700 /* insert first part of numerics (sign or '0x') before zero 4701 * padding */ 4702 int zn = (int)zero_padding_insertion_ind; 4703 4704 if (zn > 0) 4705 { 4706 if (str_l < str_m) 4707 { 4708 size_t avail = str_m - str_l; 4709 4710 mch_memmove(str + str_l, str_arg, 4711 (size_t)zn > avail ? avail : zn); 4712 } 4713 str_l += zn; 4714 } 4715 4716 /* insert zero padding as requested by the precision or min 4717 * field width */ 4718 zn = (int)number_of_zeros_to_pad; 4719 if (zn > 0) 4720 { 4721 if (str_l < str_m) 4722 { 4723 size_t avail = str_m-str_l; 4724 4725 vim_memset(str + str_l, '0', 4726 (size_t)zn > avail ? avail : zn); 4727 } 4728 str_l += zn; 4729 } 4730 } 4731 4732 /* insert formatted string 4733 * (or as-is conversion specifier for unknown conversions) */ 4734 { 4735 int sn = (int)(str_arg_l - zero_padding_insertion_ind); 4736 4737 if (sn > 0) 4738 { 4739 if (str_l < str_m) 4740 { 4741 size_t avail = str_m - str_l; 4742 4743 mch_memmove(str + str_l, 4744 str_arg + zero_padding_insertion_ind, 4745 (size_t)sn > avail ? avail : sn); 4746 } 4747 str_l += sn; 4748 } 4749 } 4750 4751 /* insert right padding */ 4752 if (justify_left) 4753 { 4754 /* right blank padding to the field width */ 4755 int pn = (int)(min_field_width 4756 - (str_arg_l + number_of_zeros_to_pad)); 4757 4758 if (pn > 0) 4759 { 4760 if (str_l < str_m) 4761 { 4762 size_t avail = str_m - str_l; 4763 4764 vim_memset(str + str_l, ' ', 4765 (size_t)pn > avail ? avail : pn); 4766 } 4767 str_l += pn; 4768 } 4769 } 4770 } 4771 } 4772 4773 if (str_m > 0) 4774 { 4775 /* make sure the string is nul-terminated even at the expense of 4776 * overwriting the last character (shouldn't happen, but just in case) 4777 * */ 4778 str[str_l <= str_m - 1 ? str_l : str_m - 1] = '\0'; 4779 } 4780 4781 #ifdef HAVE_STDARG_H 4782 if (tvs != NULL && tvs[arg_idx - 1].v_type != VAR_UNKNOWN) 4783 EMSG(_("E767: Too many arguments to printf()")); 4784 #endif 4785 4786 /* Return the number of characters formatted (excluding trailing nul 4787 * character), that is, the number of characters that would have been 4788 * written to the buffer if it were large enough. */ 4789 return (int)str_l; 4790 } 4791 4792 #endif /* PROTO */ 4793