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 #ifdef FEAT_CON_DIALOG 43 static char_u *msg_show_console_dialog __ARGS((char_u *message, char_u *buttons, int dfltbutton)); 44 static int confirm_msg_used = FALSE; /* displaying confirm_msg */ 45 static char_u *confirm_msg = NULL; /* ":confirm" message */ 46 static char_u *confirm_msg_tail; /* tail of confirm_msg */ 47 #endif 48 49 struct msg_hist 50 { 51 struct msg_hist *next; 52 char_u *msg; 53 int attr; 54 }; 55 56 static struct msg_hist *first_msg_hist = NULL; 57 static struct msg_hist *last_msg_hist = NULL; 58 static int msg_hist_len = 0; 59 60 static FILE *verbose_fd = NULL; 61 static int verbose_did_open = FALSE; 62 63 /* 64 * When writing messages to the screen, there are many different situations. 65 * A number of variables is used to remember the current state: 66 * msg_didany TRUE when messages were written since the last time the 67 * user reacted to a prompt. 68 * Reset: After hitting a key for the hit-return prompt, 69 * hitting <CR> for the command line or input(). 70 * Set: When any message is written to the screen. 71 * msg_didout TRUE when something was written to the current line. 72 * Reset: When advancing to the next line, when the current 73 * text can be overwritten. 74 * Set: When any message is written to the screen. 75 * msg_nowait No extra delay for the last drawn message. 76 * Used in normal_cmd() before the mode message is drawn. 77 * emsg_on_display There was an error message recently. Indicates that there 78 * should be a delay before redrawing. 79 * msg_scroll The next message should not overwrite the current one. 80 * msg_scrolled How many lines the screen has been scrolled (because of 81 * messages). Used in update_screen() to scroll the screen 82 * back. Incremented each time the screen scrolls a line. 83 * msg_scrolled_ign TRUE when msg_scrolled is non-zero and msg_puts_attr() 84 * writes something without scrolling should not make 85 * need_wait_return to be set. This is a hack to make ":ts" 86 * work without an extra prompt. 87 * lines_left Number of lines available for messages before the 88 * more-prompt is to be given. -1 when not set. 89 * need_wait_return TRUE when the hit-return prompt is needed. 90 * Reset: After giving the hit-return prompt, when the user 91 * has answered some other prompt. 92 * Set: When the ruler or typeahead display is overwritten, 93 * scrolling the screen for some message. 94 * keep_msg Message to be displayed after redrawing the screen, in 95 * main_loop(). 96 * This is an allocated string or NULL when not used. 97 */ 98 99 /* 100 * msg(s) - displays the string 's' on the status line 101 * When terminal not initialized (yet) mch_errmsg(..) is used. 102 * return TRUE if wait_return not called 103 */ 104 int 105 msg(s) 106 char_u *s; 107 { 108 return msg_attr_keep(s, 0, FALSE); 109 } 110 111 #if defined(FEAT_EVAL) || defined(FEAT_X11) || defined(USE_XSMP) \ 112 || defined(FEAT_GUI_GTK) || defined(PROTO) 113 /* 114 * Like msg() but keep it silent when 'verbosefile' is set. 115 */ 116 int 117 verb_msg(s) 118 char_u *s; 119 { 120 int n; 121 122 verbose_enter(); 123 n = msg_attr_keep(s, 0, FALSE); 124 verbose_leave(); 125 126 return n; 127 } 128 #endif 129 130 int 131 msg_attr(s, attr) 132 char_u *s; 133 int attr; 134 { 135 return msg_attr_keep(s, attr, FALSE); 136 } 137 138 int 139 msg_attr_keep(s, attr, keep) 140 char_u *s; 141 int attr; 142 int keep; /* TRUE: set keep_msg if it doesn't scroll */ 143 { 144 static int entered = 0; 145 int retval; 146 char_u *buf = NULL; 147 148 #ifdef FEAT_EVAL 149 if (attr == 0) 150 set_vim_var_string(VV_STATUSMSG, s, -1); 151 #endif 152 153 /* 154 * It is possible that displaying a messages causes a problem (e.g., 155 * when redrawing the window), which causes another message, etc.. To 156 * break this loop, limit the recursiveness to 3 levels. 157 */ 158 if (entered >= 3) 159 return TRUE; 160 ++entered; 161 162 /* Add message to history (unless it's a repeated kept message or a 163 * truncated message) */ 164 if (s != keep_msg 165 || (*s != '<' 166 && last_msg_hist != NULL 167 && last_msg_hist->msg != NULL 168 && STRCMP(s, last_msg_hist->msg))) 169 add_msg_hist(s, -1, attr); 170 171 /* When displaying keep_msg, don't let msg_start() free it, caller must do 172 * that. */ 173 if (s == keep_msg) 174 keep_msg = NULL; 175 176 /* Truncate the message if needed. */ 177 msg_start(); 178 buf = msg_strtrunc(s, FALSE); 179 if (buf != NULL) 180 s = buf; 181 182 msg_outtrans_attr(s, attr); 183 msg_clr_eos(); 184 retval = msg_end(); 185 186 if (keep && retval && vim_strsize(s) < (int)(Rows - cmdline_row - 1) 187 * Columns + sc_col) 188 set_keep_msg(s, 0); 189 190 vim_free(buf); 191 --entered; 192 return retval; 193 } 194 195 /* 196 * Truncate a string such that it can be printed without causing a scroll. 197 * Returns an allocated string or NULL when no truncating is done. 198 */ 199 char_u * 200 msg_strtrunc(s, force) 201 char_u *s; 202 int force; /* always truncate */ 203 { 204 char_u *buf = NULL; 205 int len; 206 int room; 207 208 /* May truncate message to avoid a hit-return prompt */ 209 if ((!msg_scroll && !need_wait_return && shortmess(SHM_TRUNCALL) 210 && !exmode_active && msg_silent == 0) || force) 211 { 212 len = vim_strsize(s); 213 if (msg_scrolled != 0) 214 /* Use all the columns. */ 215 room = (int)(Rows - msg_row) * Columns - 1; 216 else 217 /* Use up to 'showcmd' column. */ 218 room = (int)(Rows - msg_row - 1) * Columns + sc_col - 1; 219 if (len > room && room > 0) 220 { 221 #ifdef FEAT_MBYTE 222 if (enc_utf8) 223 /* may have up to 18 bytes per cell (6 per char, up to two 224 * composing chars) */ 225 len = (room + 2) * 18; 226 else if (enc_dbcs == DBCS_JPNU) 227 /* may have up to 2 bytes per cell for euc-jp */ 228 len = (room + 2) * 2; 229 else 230 #endif 231 len = room + 2; 232 buf = alloc(len); 233 if (buf != NULL) 234 trunc_string(s, buf, room, len); 235 } 236 } 237 return buf; 238 } 239 240 /* 241 * Truncate a string "s" to "buf" with cell width "room". 242 * "s" and "buf" may be equal. 243 */ 244 void 245 trunc_string(s, buf, room, buflen) 246 char_u *s; 247 char_u *buf; 248 int room; 249 int buflen; 250 { 251 int half; 252 int len; 253 int e; 254 int i; 255 int n; 256 257 room -= 3; 258 half = room / 2; 259 len = 0; 260 261 /* First part: Start of the string. */ 262 for (e = 0; len < half && e < buflen; ++e) 263 { 264 if (s[e] == NUL) 265 { 266 /* text fits without truncating! */ 267 buf[e] = NUL; 268 return; 269 } 270 n = ptr2cells(s + e); 271 if (len + n >= half) 272 break; 273 len += n; 274 buf[e] = s[e]; 275 #ifdef FEAT_MBYTE 276 if (has_mbyte) 277 for (n = (*mb_ptr2len)(s + e); --n > 0; ) 278 { 279 if (++e == buflen) 280 break; 281 buf[e] = s[e]; 282 } 283 #endif 284 } 285 286 /* Last part: End of the string. */ 287 i = e; 288 #ifdef FEAT_MBYTE 289 if (enc_dbcs != 0) 290 { 291 /* For DBCS going backwards in a string is slow, but 292 * computing the cell width isn't too slow: go forward 293 * until the rest fits. */ 294 n = vim_strsize(s + i); 295 while (len + n > room) 296 { 297 n -= ptr2cells(s + i); 298 i += (*mb_ptr2len)(s + i); 299 } 300 } 301 else if (enc_utf8) 302 { 303 /* For UTF-8 we can go backwards easily. */ 304 half = i = (int)STRLEN(s); 305 for (;;) 306 { 307 do 308 half = half - (*mb_head_off)(s, s + half - 1) - 1; 309 while (utf_iscomposing(utf_ptr2char(s + half)) && half > 0); 310 n = ptr2cells(s + half); 311 if (len + n > room) 312 break; 313 len += n; 314 i = half; 315 } 316 } 317 else 318 #endif 319 { 320 for (i = (int)STRLEN(s); len + (n = ptr2cells(s + i - 1)) <= room; --i) 321 len += n; 322 } 323 324 /* Set the middle and copy the last part. */ 325 if (e + 3 < buflen) 326 { 327 mch_memmove(buf + e, "...", (size_t)3); 328 len = (int)STRLEN(s + i) + 1; 329 if (len >= buflen - e - 3) 330 len = buflen - e - 3 - 1; 331 mch_memmove(buf + e + 3, s + i, len); 332 buf[e + 3 + len - 1] = NUL; 333 } 334 else 335 { 336 buf[e - 1] = NUL; /* make sure it is truncated */ 337 } 338 } 339 340 /* 341 * Automatic prototype generation does not understand this function. 342 * Note: Caller of smgs() and smsg_attr() must check the resulting string is 343 * shorter than IOSIZE!!! 344 */ 345 #ifndef PROTO 346 # ifndef HAVE_STDARG_H 347 348 int 349 #ifdef __BORLANDC__ 350 _RTLENTRYF 351 #endif 352 smsg __ARGS((char_u *, long, long, long, 353 long, long, long, long, long, long, long)); 354 int 355 #ifdef __BORLANDC__ 356 _RTLENTRYF 357 #endif 358 smsg_attr __ARGS((int, char_u *, long, long, long, 359 long, long, long, long, long, long, long)); 360 361 int vim_snprintf __ARGS((char *, size_t, char *, long, long, long, 362 long, long, long, long, long, long, long)); 363 364 /* 365 * smsg(str, arg, ...) is like using sprintf(buf, str, arg, ...) and then 366 * calling msg(buf). 367 * The buffer used is IObuff, the message is truncated at IOSIZE. 368 */ 369 370 /* VARARGS */ 371 int 372 #ifdef __BORLANDC__ 373 _RTLENTRYF 374 #endif 375 smsg(s, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) 376 char_u *s; 377 long a1, a2, a3, a4, a5, a6, a7, a8, a9, a10; 378 { 379 return smsg_attr(0, s, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10); 380 } 381 382 /* VARARGS */ 383 int 384 #ifdef __BORLANDC__ 385 _RTLENTRYF 386 #endif 387 smsg_attr(attr, s, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) 388 int attr; 389 char_u *s; 390 long a1, a2, a3, a4, a5, a6, a7, a8, a9, a10; 391 { 392 vim_snprintf((char *)IObuff, IOSIZE, (char *)s, 393 a1, a2, a3, a4, a5, a6, a7, a8, a9, a10); 394 return msg_attr(IObuff, attr); 395 } 396 397 # else /* HAVE_STDARG_H */ 398 399 int vim_snprintf(char *str, size_t str_m, char *fmt, ...); 400 401 int 402 #ifdef __BORLANDC__ 403 _RTLENTRYF 404 #endif 405 smsg(char_u *s, ...) 406 { 407 va_list arglist; 408 409 va_start(arglist, s); 410 vim_vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist, NULL); 411 va_end(arglist); 412 return msg(IObuff); 413 } 414 415 int 416 #ifdef __BORLANDC__ 417 _RTLENTRYF 418 #endif 419 smsg_attr(int attr, char_u *s, ...) 420 { 421 va_list arglist; 422 423 va_start(arglist, s); 424 vim_vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist, NULL); 425 va_end(arglist); 426 return msg_attr(IObuff, attr); 427 } 428 429 # endif /* HAVE_STDARG_H */ 430 #endif 431 432 /* 433 * Remember the last sourcing name/lnum used in an error message, so that it 434 * isn't printed each time when it didn't change. 435 */ 436 static int last_sourcing_lnum = 0; 437 static char_u *last_sourcing_name = NULL; 438 439 /* 440 * Reset the last used sourcing name/lnum. Makes sure it is displayed again 441 * for the next error message; 442 */ 443 void 444 reset_last_sourcing() 445 { 446 vim_free(last_sourcing_name); 447 last_sourcing_name = NULL; 448 last_sourcing_lnum = 0; 449 } 450 451 /* 452 * Return TRUE if "sourcing_name" differs from "last_sourcing_name". 453 */ 454 static int 455 other_sourcing_name() 456 { 457 if (sourcing_name != NULL) 458 { 459 if (last_sourcing_name != NULL) 460 return STRCMP(sourcing_name, last_sourcing_name) != 0; 461 return TRUE; 462 } 463 return FALSE; 464 } 465 466 /* 467 * Get the message about the source, as used for an error message. 468 * Returns an allocated string with room for one more character. 469 * Returns NULL when no message is to be given. 470 */ 471 static char_u * 472 get_emsg_source() 473 { 474 char_u *Buf, *p; 475 476 if (sourcing_name != NULL && other_sourcing_name()) 477 { 478 p = (char_u *)_("Error detected while processing %s:"); 479 Buf = alloc((unsigned)(STRLEN(sourcing_name) + STRLEN(p))); 480 if (Buf != NULL) 481 sprintf((char *)Buf, (char *)p, sourcing_name); 482 return Buf; 483 } 484 return NULL; 485 } 486 487 /* 488 * Get the message about the source lnum, as used for an error message. 489 * Returns an allocated string with room for one more character. 490 * Returns NULL when no message is to be given. 491 */ 492 static char_u * 493 get_emsg_lnum() 494 { 495 char_u *Buf, *p; 496 497 /* lnum is 0 when executing a command from the command line 498 * argument, we don't want a line number then */ 499 if (sourcing_name != NULL 500 && (other_sourcing_name() || sourcing_lnum != last_sourcing_lnum) 501 && sourcing_lnum != 0) 502 { 503 p = (char_u *)_("line %4ld:"); 504 Buf = alloc((unsigned)(STRLEN(p) + 20)); 505 if (Buf != NULL) 506 sprintf((char *)Buf, (char *)p, (long)sourcing_lnum); 507 return Buf; 508 } 509 return NULL; 510 } 511 512 /* 513 * Display name and line number for the source of an error. 514 * Remember the file name and line number, so that for the next error the info 515 * is only displayed if it changed. 516 */ 517 void 518 msg_source(attr) 519 int attr; 520 { 521 char_u *p; 522 523 ++no_wait_return; 524 p = get_emsg_source(); 525 if (p != NULL) 526 { 527 msg_attr(p, attr); 528 vim_free(p); 529 } 530 p = get_emsg_lnum(); 531 if (p != NULL) 532 { 533 msg_attr(p, hl_attr(HLF_N)); 534 vim_free(p); 535 last_sourcing_lnum = sourcing_lnum; /* only once for each line */ 536 } 537 538 /* remember the last sourcing name printed, also when it's empty */ 539 if (sourcing_name == NULL || other_sourcing_name()) 540 { 541 vim_free(last_sourcing_name); 542 if (sourcing_name == NULL) 543 last_sourcing_name = NULL; 544 else 545 last_sourcing_name = vim_strsave(sourcing_name); 546 } 547 --no_wait_return; 548 } 549 550 /* 551 * Return TRUE if not giving error messages right now: 552 * If "emsg_off" is set: no error messages at the moment. 553 * If "msg" is in 'debug': do error message but without side effects. 554 * If "emsg_skip" is set: never do error messages. 555 */ 556 int 557 emsg_not_now() 558 { 559 if ((emsg_off > 0 && vim_strchr(p_debug, 'm') == NULL 560 && vim_strchr(p_debug, 't') == NULL) 561 #ifdef FEAT_EVAL 562 || emsg_skip > 0 563 #endif 564 ) 565 return TRUE; 566 return FALSE; 567 } 568 569 /* 570 * emsg() - display an error message 571 * 572 * Rings the bell, if appropriate, and calls message() to do the real work 573 * When terminal not initialized (yet) mch_errmsg(..) is used. 574 * 575 * return TRUE if wait_return not called 576 */ 577 int 578 emsg(s) 579 char_u *s; 580 { 581 int attr; 582 char_u *p; 583 #ifdef FEAT_EVAL 584 int ignore = FALSE; 585 int severe; 586 #endif 587 588 /* Skip this if not giving error messages at the moment. */ 589 if (emsg_not_now()) 590 return TRUE; 591 592 called_emsg = TRUE; 593 ex_exitval = 1; 594 595 /* 596 * If "emsg_severe" is TRUE: When an error exception is to be thrown, 597 * prefer this message over previous messages for the same command. 598 */ 599 #ifdef FEAT_EVAL 600 severe = emsg_severe; 601 emsg_severe = FALSE; 602 #endif 603 604 if (!emsg_off || vim_strchr(p_debug, 't') != NULL) 605 { 606 #ifdef FEAT_EVAL 607 /* 608 * Cause a throw of an error exception if appropriate. Don't display 609 * the error message in this case. (If no matching catch clause will 610 * be found, the message will be displayed later on.) "ignore" is set 611 * when the message should be ignored completely (used for the 612 * interrupt message). 613 */ 614 if (cause_errthrow(s, severe, &ignore) == TRUE) 615 { 616 if (!ignore) 617 did_emsg = TRUE; 618 return TRUE; 619 } 620 621 /* set "v:errmsg", also when using ":silent! cmd" */ 622 set_vim_var_string(VV_ERRMSG, s, -1); 623 #endif 624 625 /* 626 * When using ":silent! cmd" ignore error messages. 627 * But do write it to the redirection file. 628 */ 629 if (emsg_silent != 0) 630 { 631 msg_start(); 632 p = get_emsg_source(); 633 if (p != NULL) 634 { 635 STRCAT(p, "\n"); 636 redir_write(p, -1); 637 vim_free(p); 638 } 639 p = get_emsg_lnum(); 640 if (p != NULL) 641 { 642 STRCAT(p, "\n"); 643 redir_write(p, -1); 644 vim_free(p); 645 } 646 redir_write(s, -1); 647 return TRUE; 648 } 649 650 /* Reset msg_silent, an error causes messages to be switched back on. */ 651 msg_silent = 0; 652 cmd_silent = FALSE; 653 654 if (global_busy) /* break :global command */ 655 ++global_busy; 656 657 if (p_eb) 658 beep_flush(); /* also includes flush_buffers() */ 659 else 660 flush_buffers(FALSE); /* flush internal buffers */ 661 did_emsg = TRUE; /* flag for DoOneCmd() */ 662 } 663 664 emsg_on_display = TRUE; /* remember there is an error message */ 665 ++msg_scroll; /* don't overwrite a previous message */ 666 attr = hl_attr(HLF_E); /* set highlight mode for error messages */ 667 if (msg_scrolled != 0) 668 need_wait_return = TRUE; /* needed in case emsg() is called after 669 * wait_return has reset need_wait_return 670 * and a redraw is expected because 671 * msg_scrolled is non-zero */ 672 673 /* 674 * Display name and line number for the source of the error. 675 */ 676 msg_source(attr); 677 678 /* 679 * Display the error message itself. 680 */ 681 msg_nowait = FALSE; /* wait for this msg */ 682 return msg_attr(s, attr); 683 } 684 685 /* 686 * Print an error message with one "%s" and one string argument. 687 */ 688 int 689 emsg2(s, a1) 690 char_u *s, *a1; 691 { 692 return emsg3(s, a1, NULL); 693 } 694 695 /* emsg3() and emsgn() are in misc2.c to avoid warnings for the prototypes. */ 696 697 void 698 emsg_invreg(name) 699 int name; 700 { 701 EMSG2(_("E354: Invalid register name: '%s'"), transchar(name)); 702 } 703 704 /* 705 * Like msg(), but truncate to a single line if p_shm contains 't', or when 706 * "force" is TRUE. This truncates in another way as for normal messages. 707 * Careful: The string may be changed by msg_may_trunc()! 708 * Returns a pointer to the printed message, if wait_return() not called. 709 */ 710 char_u * 711 msg_trunc_attr(s, force, attr) 712 char_u *s; 713 int force; 714 int attr; 715 { 716 int n; 717 718 /* Add message to history before truncating */ 719 add_msg_hist(s, -1, attr); 720 721 s = msg_may_trunc(force, s); 722 723 msg_hist_off = TRUE; 724 n = msg_attr(s, attr); 725 msg_hist_off = FALSE; 726 727 if (n) 728 return s; 729 return NULL; 730 } 731 732 /* 733 * Check if message "s" should be truncated at the start (for filenames). 734 * Return a pointer to where the truncated message starts. 735 * Note: May change the message by replacing a character with '<'. 736 */ 737 char_u * 738 msg_may_trunc(force, s) 739 int force; 740 char_u *s; 741 { 742 int n; 743 int room; 744 745 room = (int)(Rows - cmdline_row - 1) * Columns + sc_col - 1; 746 if ((force || (shortmess(SHM_TRUNC) && !exmode_active)) 747 && (n = (int)STRLEN(s) - room) > 0) 748 { 749 #ifdef FEAT_MBYTE 750 if (has_mbyte) 751 { 752 int size = vim_strsize(s); 753 754 /* There may be room anyway when there are multibyte chars. */ 755 if (size <= room) 756 return s; 757 758 for (n = 0; size >= room; ) 759 { 760 size -= (*mb_ptr2cells)(s + n); 761 n += (*mb_ptr2len)(s + n); 762 } 763 --n; 764 } 765 #endif 766 s += n; 767 *s = '<'; 768 } 769 return s; 770 } 771 772 static void 773 add_msg_hist(s, len, attr) 774 char_u *s; 775 int len; /* -1 for undetermined length */ 776 int attr; 777 { 778 struct msg_hist *p; 779 780 if (msg_hist_off || msg_silent != 0) 781 return; 782 783 /* Don't let the message history get too big */ 784 while (msg_hist_len > MAX_MSG_HIST_LEN) 785 (void)delete_first_msg(); 786 787 /* allocate an entry and add the message at the end of the history */ 788 p = (struct msg_hist *)alloc((int)sizeof(struct msg_hist)); 789 if (p != NULL) 790 { 791 if (len < 0) 792 len = (int)STRLEN(s); 793 /* remove leading and trailing newlines */ 794 while (len > 0 && *s == '\n') 795 { 796 ++s; 797 --len; 798 } 799 while (len > 0 && s[len - 1] == '\n') 800 --len; 801 p->msg = vim_strnsave(s, len); 802 p->next = NULL; 803 p->attr = attr; 804 if (last_msg_hist != NULL) 805 last_msg_hist->next = p; 806 last_msg_hist = p; 807 if (first_msg_hist == NULL) 808 first_msg_hist = last_msg_hist; 809 ++msg_hist_len; 810 } 811 } 812 813 /* 814 * Delete the first (oldest) message from the history. 815 * Returns FAIL if there are no messages. 816 */ 817 int 818 delete_first_msg() 819 { 820 struct msg_hist *p; 821 822 if (msg_hist_len <= 0) 823 return FAIL; 824 p = first_msg_hist; 825 first_msg_hist = p->next; 826 if (first_msg_hist == NULL) 827 last_msg_hist = NULL; /* history is empty */ 828 vim_free(p->msg); 829 vim_free(p); 830 --msg_hist_len; 831 return OK; 832 } 833 834 /* 835 * ":messages" command. 836 */ 837 void 838 ex_messages(eap) 839 exarg_T *eap UNUSED; 840 { 841 struct msg_hist *p; 842 char_u *s; 843 844 msg_hist_off = TRUE; 845 846 s = mch_getenv((char_u *)"LANG"); 847 if (s != NULL && *s != NUL) 848 msg_attr((char_u *) 849 _("Messages maintainer: Bram Moolenaar <[email protected]>"), 850 hl_attr(HLF_T)); 851 852 for (p = first_msg_hist; p != NULL && !got_int; p = p->next) 853 if (p->msg != NULL) 854 msg_attr(p->msg, p->attr); 855 856 msg_hist_off = FALSE; 857 } 858 859 #if defined(FEAT_CON_DIALOG) || defined(FIND_REPLACE_DIALOG) || defined(PROTO) 860 /* 861 * Call this after prompting the user. This will avoid a hit-return message 862 * and a delay. 863 */ 864 void 865 msg_end_prompt() 866 { 867 need_wait_return = FALSE; 868 emsg_on_display = FALSE; 869 cmdline_row = msg_row; 870 msg_col = 0; 871 msg_clr_eos(); 872 lines_left = -1; 873 } 874 #endif 875 876 /* 877 * wait for the user to hit a key (normally a return) 878 * if 'redraw' is TRUE, clear and redraw the screen 879 * if 'redraw' is FALSE, just redraw the screen 880 * if 'redraw' is -1, don't redraw at all 881 */ 882 void 883 wait_return(redraw) 884 int redraw; 885 { 886 int c; 887 int oldState; 888 int tmpState; 889 int had_got_int; 890 891 if (redraw == TRUE) 892 must_redraw = CLEAR; 893 894 /* If using ":silent cmd", don't wait for a return. Also don't set 895 * need_wait_return to do it later. */ 896 if (msg_silent != 0) 897 return; 898 899 /* 900 * When inside vgetc(), we can't wait for a typed character at all. 901 * With the global command (and some others) we only need one return at 902 * the end. Adjust cmdline_row to avoid the next message overwriting the 903 * last one. 904 */ 905 if (vgetc_busy > 0) 906 return; 907 need_wait_return = TRUE; 908 if (no_wait_return) 909 { 910 if (!exmode_active) 911 cmdline_row = msg_row; 912 return; 913 } 914 915 redir_off = TRUE; /* don't redirect this message */ 916 oldState = State; 917 if (quit_more) 918 { 919 c = CAR; /* just pretend CR was hit */ 920 quit_more = FALSE; 921 got_int = FALSE; 922 } 923 else if (exmode_active) 924 { 925 MSG_PUTS(" "); /* make sure the cursor is on the right line */ 926 c = CAR; /* no need for a return in ex mode */ 927 got_int = FALSE; 928 } 929 else 930 { 931 /* Make sure the hit-return prompt is on screen when 'guioptions' was 932 * just changed. */ 933 screenalloc(FALSE); 934 935 State = HITRETURN; 936 #ifdef FEAT_MOUSE 937 setmouse(); 938 #endif 939 #ifdef USE_ON_FLY_SCROLL 940 dont_scroll = TRUE; /* disallow scrolling here */ 941 #endif 942 /* Avoid the sequence that the user types ":" at the hit-return prompt 943 * to start an Ex command, but the file-changed dialog gets in the 944 * way. */ 945 if (need_check_timestamps) 946 check_timestamps(FALSE); 947 948 hit_return_msg(); 949 950 do 951 { 952 /* Remember "got_int", if it is set vgetc() probably returns a 953 * CTRL-C, but we need to loop then. */ 954 had_got_int = got_int; 955 956 /* Don't do mappings here, we put the character back in the 957 * typeahead buffer. */ 958 ++no_mapping; 959 ++allow_keys; 960 c = safe_vgetc(); 961 if (had_got_int && !global_busy) 962 got_int = FALSE; 963 --no_mapping; 964 --allow_keys; 965 966 #ifdef FEAT_CLIPBOARD 967 /* Strange way to allow copying (yanking) a modeless selection at 968 * the hit-enter prompt. Use CTRL-Y, because the same is used in 969 * Cmdline-mode and it's harmless when there is no selection. */ 970 if (c == Ctrl_Y && clip_star.state == SELECT_DONE) 971 { 972 clip_copy_modeless_selection(TRUE); 973 c = K_IGNORE; 974 } 975 #endif 976 977 /* 978 * Allow scrolling back in the messages. 979 * Also accept scroll-down commands when messages fill the screen, 980 * to avoid that typing one 'j' too many makes the messages 981 * disappear. 982 */ 983 if (p_more && !p_cp) 984 { 985 if (c == 'b' || c == 'k' || c == 'u' || c == 'g' 986 || c == K_UP || c == K_PAGEUP) 987 { 988 if (msg_scrolled > Rows) 989 /* scroll back to show older messages */ 990 do_more_prompt(c); 991 else 992 { 993 msg_didout = FALSE; 994 c = K_IGNORE; 995 msg_col = 996 #ifdef FEAT_RIGHTLEFT 997 cmdmsg_rl ? Columns - 1 : 998 #endif 999 0; 1000 } 1001 if (quit_more) 1002 { 1003 c = CAR; /* just pretend CR was hit */ 1004 quit_more = FALSE; 1005 got_int = FALSE; 1006 } 1007 else 1008 { 1009 c = K_IGNORE; 1010 hit_return_msg(); 1011 } 1012 } 1013 else if (msg_scrolled > Rows - 2 1014 && (c == 'j' || c == 'd' || c == 'f' 1015 || c == K_DOWN || c == K_PAGEDOWN)) 1016 c = K_IGNORE; 1017 } 1018 } while ((had_got_int && c == Ctrl_C) 1019 || c == K_IGNORE 1020 #ifdef FEAT_GUI 1021 || c == K_VER_SCROLLBAR || c == K_HOR_SCROLLBAR 1022 #endif 1023 #ifdef FEAT_MOUSE 1024 || c == K_LEFTDRAG || c == K_LEFTRELEASE 1025 || c == K_MIDDLEDRAG || c == K_MIDDLERELEASE 1026 || c == K_RIGHTDRAG || c == K_RIGHTRELEASE 1027 || c == K_MOUSELEFT || c == K_MOUSERIGHT 1028 || c == K_MOUSEDOWN || c == K_MOUSEUP 1029 || (!mouse_has(MOUSE_RETURN) 1030 && mouse_row < msg_row 1031 && (c == K_LEFTMOUSE 1032 || c == K_MIDDLEMOUSE 1033 || c == K_RIGHTMOUSE 1034 || c == K_X1MOUSE 1035 || c == K_X2MOUSE)) 1036 #endif 1037 ); 1038 ui_breakcheck(); 1039 #ifdef FEAT_MOUSE 1040 /* 1041 * Avoid that the mouse-up event causes visual mode to start. 1042 */ 1043 if (c == K_LEFTMOUSE || c == K_MIDDLEMOUSE || c == K_RIGHTMOUSE 1044 || c == K_X1MOUSE || c == K_X2MOUSE) 1045 (void)jump_to_mouse(MOUSE_SETPOS, NULL, 0); 1046 else 1047 #endif 1048 if (vim_strchr((char_u *)"\r\n ", c) == NULL && c != Ctrl_C) 1049 { 1050 /* Put the character back in the typeahead buffer. Don't use the 1051 * stuff buffer, because lmaps wouldn't work. */ 1052 ins_char_typebuf(c); 1053 do_redraw = TRUE; /* need a redraw even though there is 1054 typeahead */ 1055 } 1056 } 1057 redir_off = FALSE; 1058 1059 /* 1060 * If the user hits ':', '?' or '/' we get a command line from the next 1061 * line. 1062 */ 1063 if (c == ':' || c == '?' || c == '/') 1064 { 1065 if (!exmode_active) 1066 cmdline_row = msg_row; 1067 skip_redraw = TRUE; /* skip redraw once */ 1068 do_redraw = FALSE; 1069 } 1070 1071 /* 1072 * If the window size changed set_shellsize() will redraw the screen. 1073 * Otherwise the screen is only redrawn if 'redraw' is set and no ':' 1074 * typed. 1075 */ 1076 tmpState = State; 1077 State = oldState; /* restore State before set_shellsize */ 1078 #ifdef FEAT_MOUSE 1079 setmouse(); 1080 #endif 1081 msg_check(); 1082 1083 #if defined(UNIX) || defined(VMS) 1084 /* 1085 * When switching screens, we need to output an extra newline on exit. 1086 */ 1087 if (swapping_screen() && !termcap_active) 1088 newline_on_exit = TRUE; 1089 #endif 1090 1091 need_wait_return = FALSE; 1092 did_wait_return = TRUE; 1093 emsg_on_display = FALSE; /* can delete error message now */ 1094 lines_left = -1; /* reset lines_left at next msg_start() */ 1095 reset_last_sourcing(); 1096 if (keep_msg != NULL && vim_strsize(keep_msg) >= 1097 (Rows - cmdline_row - 1) * Columns + sc_col) 1098 { 1099 vim_free(keep_msg); 1100 keep_msg = NULL; /* don't redisplay message, it's too long */ 1101 } 1102 1103 if (tmpState == SETWSIZE) /* got resize event while in vgetc() */ 1104 { 1105 starttermcap(); /* start termcap before redrawing */ 1106 shell_resized(); 1107 } 1108 else if (!skip_redraw 1109 && (redraw == TRUE || (msg_scrolled != 0 && redraw != -1))) 1110 { 1111 starttermcap(); /* start termcap before redrawing */ 1112 redraw_later(VALID); 1113 } 1114 } 1115 1116 /* 1117 * Write the hit-return prompt. 1118 */ 1119 static void 1120 hit_return_msg() 1121 { 1122 int save_p_more = p_more; 1123 1124 p_more = FALSE; /* don't want see this message when scrolling back */ 1125 if (msg_didout) /* start on a new line */ 1126 msg_putchar('\n'); 1127 if (got_int) 1128 MSG_PUTS(_("Interrupt: ")); 1129 1130 MSG_PUTS_ATTR(_("Press ENTER or type command to continue"), hl_attr(HLF_R)); 1131 if (!msg_use_printf()) 1132 msg_clr_eos(); 1133 p_more = save_p_more; 1134 } 1135 1136 /* 1137 * Set "keep_msg" to "s". Free the old value and check for NULL pointer. 1138 */ 1139 void 1140 set_keep_msg(s, attr) 1141 char_u *s; 1142 int attr; 1143 { 1144 vim_free(keep_msg); 1145 if (s != NULL && msg_silent == 0) 1146 keep_msg = vim_strsave(s); 1147 else 1148 keep_msg = NULL; 1149 keep_msg_more = FALSE; 1150 keep_msg_attr = attr; 1151 } 1152 1153 #if defined(FEAT_TERMRESPONSE) || defined(PROTO) 1154 /* 1155 * If there currently is a message being displayed, set "keep_msg" to it, so 1156 * that it will be displayed again after redraw. 1157 */ 1158 void 1159 set_keep_msg_from_hist() 1160 { 1161 if (keep_msg == NULL && last_msg_hist != NULL && msg_scrolled == 0 1162 && (State & NORMAL)) 1163 set_keep_msg(last_msg_hist->msg, last_msg_hist->attr); 1164 } 1165 #endif 1166 1167 /* 1168 * Prepare for outputting characters in the command line. 1169 */ 1170 void 1171 msg_start() 1172 { 1173 int did_return = FALSE; 1174 1175 if (!msg_silent) 1176 { 1177 vim_free(keep_msg); 1178 keep_msg = NULL; /* don't display old message now */ 1179 } 1180 1181 #ifdef FEAT_EVAL 1182 if (need_clr_eos) 1183 { 1184 /* Halfway an ":echo" command and getting an (error) message: clear 1185 * any text from the command. */ 1186 need_clr_eos = FALSE; 1187 msg_clr_eos(); 1188 } 1189 #endif 1190 1191 if (!msg_scroll && full_screen) /* overwrite last message */ 1192 { 1193 msg_row = cmdline_row; 1194 msg_col = 1195 #ifdef FEAT_RIGHTLEFT 1196 cmdmsg_rl ? Columns - 1 : 1197 #endif 1198 0; 1199 } 1200 else if (msg_didout) /* start message on next line */ 1201 { 1202 msg_putchar('\n'); 1203 did_return = TRUE; 1204 if (exmode_active != EXMODE_NORMAL) 1205 cmdline_row = msg_row; 1206 } 1207 if (!msg_didany || lines_left < 0) 1208 msg_starthere(); 1209 if (msg_silent == 0) 1210 { 1211 msg_didout = FALSE; /* no output on current line yet */ 1212 cursor_off(); 1213 } 1214 1215 /* when redirecting, may need to start a new line. */ 1216 if (!did_return) 1217 redir_write((char_u *)"\n", -1); 1218 } 1219 1220 /* 1221 * Note that the current msg position is where messages start. 1222 */ 1223 void 1224 msg_starthere() 1225 { 1226 lines_left = cmdline_row; 1227 msg_didany = FALSE; 1228 } 1229 1230 void 1231 msg_putchar(c) 1232 int c; 1233 { 1234 msg_putchar_attr(c, 0); 1235 } 1236 1237 void 1238 msg_putchar_attr(c, attr) 1239 int c; 1240 int attr; 1241 { 1242 #ifdef FEAT_MBYTE 1243 char_u buf[MB_MAXBYTES + 1]; 1244 #else 1245 char_u buf[4]; 1246 #endif 1247 1248 if (IS_SPECIAL(c)) 1249 { 1250 buf[0] = K_SPECIAL; 1251 buf[1] = K_SECOND(c); 1252 buf[2] = K_THIRD(c); 1253 buf[3] = NUL; 1254 } 1255 else 1256 { 1257 #ifdef FEAT_MBYTE 1258 buf[(*mb_char2bytes)(c, buf)] = NUL; 1259 #else 1260 buf[0] = c; 1261 buf[1] = NUL; 1262 #endif 1263 } 1264 msg_puts_attr(buf, attr); 1265 } 1266 1267 void 1268 msg_outnum(n) 1269 long n; 1270 { 1271 char_u buf[20]; 1272 1273 sprintf((char *)buf, "%ld", n); 1274 msg_puts(buf); 1275 } 1276 1277 void 1278 msg_home_replace(fname) 1279 char_u *fname; 1280 { 1281 msg_home_replace_attr(fname, 0); 1282 } 1283 1284 #if defined(FEAT_FIND_ID) || defined(PROTO) 1285 void 1286 msg_home_replace_hl(fname) 1287 char_u *fname; 1288 { 1289 msg_home_replace_attr(fname, hl_attr(HLF_D)); 1290 } 1291 #endif 1292 1293 static void 1294 msg_home_replace_attr(fname, attr) 1295 char_u *fname; 1296 int attr; 1297 { 1298 char_u *name; 1299 1300 name = home_replace_save(NULL, fname); 1301 if (name != NULL) 1302 msg_outtrans_attr(name, attr); 1303 vim_free(name); 1304 } 1305 1306 /* 1307 * Output 'len' characters in 'str' (including NULs) with translation 1308 * if 'len' is -1, output upto a NUL character. 1309 * Use attributes 'attr'. 1310 * Return the number of characters it takes on the screen. 1311 */ 1312 int 1313 msg_outtrans(str) 1314 char_u *str; 1315 { 1316 return msg_outtrans_attr(str, 0); 1317 } 1318 1319 int 1320 msg_outtrans_attr(str, attr) 1321 char_u *str; 1322 int attr; 1323 { 1324 return msg_outtrans_len_attr(str, (int)STRLEN(str), attr); 1325 } 1326 1327 int 1328 msg_outtrans_len(str, len) 1329 char_u *str; 1330 int len; 1331 { 1332 return msg_outtrans_len_attr(str, len, 0); 1333 } 1334 1335 /* 1336 * Output one character at "p". Return pointer to the next character. 1337 * Handles multi-byte characters. 1338 */ 1339 char_u * 1340 msg_outtrans_one(p, attr) 1341 char_u *p; 1342 int attr; 1343 { 1344 #ifdef FEAT_MBYTE 1345 int l; 1346 1347 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) 1348 { 1349 msg_outtrans_len_attr(p, l, attr); 1350 return p + l; 1351 } 1352 #endif 1353 msg_puts_attr(transchar_byte(*p), attr); 1354 return p + 1; 1355 } 1356 1357 int 1358 msg_outtrans_len_attr(msgstr, len, attr) 1359 char_u *msgstr; 1360 int len; 1361 int attr; 1362 { 1363 int retval = 0; 1364 char_u *str = msgstr; 1365 char_u *plain_start = msgstr; 1366 char_u *s; 1367 #ifdef FEAT_MBYTE 1368 int mb_l; 1369 int c; 1370 #endif 1371 1372 /* if MSG_HIST flag set, add message to history */ 1373 if (attr & MSG_HIST) 1374 { 1375 add_msg_hist(str, len, attr); 1376 attr &= ~MSG_HIST; 1377 } 1378 1379 #ifdef FEAT_MBYTE 1380 /* If the string starts with a composing character first draw a space on 1381 * which the composing char can be drawn. */ 1382 if (enc_utf8 && utf_iscomposing(utf_ptr2char(msgstr))) 1383 msg_puts_attr((char_u *)" ", attr); 1384 #endif 1385 1386 /* 1387 * Go over the string. Special characters are translated and printed. 1388 * Normal characters are printed several at a time. 1389 */ 1390 while (--len >= 0) 1391 { 1392 #ifdef FEAT_MBYTE 1393 if (enc_utf8) 1394 /* Don't include composing chars after the end. */ 1395 mb_l = utfc_ptr2len_len(str, len + 1); 1396 else if (has_mbyte) 1397 mb_l = (*mb_ptr2len)(str); 1398 else 1399 mb_l = 1; 1400 if (has_mbyte && mb_l > 1) 1401 { 1402 c = (*mb_ptr2char)(str); 1403 if (vim_isprintc(c)) 1404 /* printable multi-byte char: count the cells. */ 1405 retval += (*mb_ptr2cells)(str); 1406 else 1407 { 1408 /* unprintable multi-byte char: print the printable chars so 1409 * far and the translation of the unprintable char. */ 1410 if (str > plain_start) 1411 msg_puts_attr_len(plain_start, (int)(str - plain_start), 1412 attr); 1413 plain_start = str + mb_l; 1414 msg_puts_attr(transchar(c), attr == 0 ? hl_attr(HLF_8) : attr); 1415 retval += char2cells(c); 1416 } 1417 len -= mb_l - 1; 1418 str += mb_l; 1419 } 1420 else 1421 #endif 1422 { 1423 s = transchar_byte(*str); 1424 if (s[1] != NUL) 1425 { 1426 /* unprintable char: print the printable chars so far and the 1427 * translation of the unprintable char. */ 1428 if (str > plain_start) 1429 msg_puts_attr_len(plain_start, (int)(str - plain_start), 1430 attr); 1431 plain_start = str + 1; 1432 msg_puts_attr(s, attr == 0 ? hl_attr(HLF_8) : attr); 1433 retval += (int)STRLEN(s); 1434 } 1435 else 1436 ++retval; 1437 ++str; 1438 } 1439 } 1440 1441 if (str > plain_start) 1442 /* print the printable chars at the end */ 1443 msg_puts_attr_len(plain_start, (int)(str - plain_start), attr); 1444 1445 return retval; 1446 } 1447 1448 #if defined(FEAT_QUICKFIX) || defined(PROTO) 1449 void 1450 msg_make(arg) 1451 char_u *arg; 1452 { 1453 int i; 1454 static char_u *str = (char_u *)"eeffoc", *rs = (char_u *)"Plon#dqg#vxjduB"; 1455 1456 arg = skipwhite(arg); 1457 for (i = 5; *arg && i >= 0; --i) 1458 if (*arg++ != str[i]) 1459 break; 1460 if (i < 0) 1461 { 1462 msg_putchar('\n'); 1463 for (i = 0; rs[i]; ++i) 1464 msg_putchar(rs[i] - 3); 1465 } 1466 } 1467 #endif 1468 1469 /* 1470 * Output the string 'str' upto a NUL character. 1471 * Return the number of characters it takes on the screen. 1472 * 1473 * If K_SPECIAL is encountered, then it is taken in conjunction with the 1474 * following character and shown as <F1>, <S-Up> etc. Any other character 1475 * which is not printable shown in <> form. 1476 * If 'from' is TRUE (lhs of a mapping), a space is shown as <Space>. 1477 * If a character is displayed in one of these special ways, is also 1478 * highlighted (its highlight name is '8' in the p_hl variable). 1479 * Otherwise characters are not highlighted. 1480 * This function is used to show mappings, where we want to see how to type 1481 * the character/string -- webb 1482 */ 1483 int 1484 msg_outtrans_special(strstart, from) 1485 char_u *strstart; 1486 int from; /* TRUE for lhs of a mapping */ 1487 { 1488 char_u *str = strstart; 1489 int retval = 0; 1490 char_u *string; 1491 int attr; 1492 int len; 1493 1494 attr = hl_attr(HLF_8); 1495 while (*str != NUL) 1496 { 1497 /* Leading and trailing spaces need to be displayed in <> form. */ 1498 if ((str == strstart || str[1] == NUL) && *str == ' ') 1499 { 1500 string = (char_u *)"<Space>"; 1501 ++str; 1502 } 1503 else 1504 string = str2special(&str, from); 1505 len = vim_strsize(string); 1506 /* Highlight special keys */ 1507 msg_puts_attr(string, len > 1 1508 #ifdef FEAT_MBYTE 1509 && (*mb_ptr2len)(string) <= 1 1510 #endif 1511 ? attr : 0); 1512 retval += len; 1513 } 1514 return retval; 1515 } 1516 1517 #if defined(FEAT_EVAL) || defined(PROTO) 1518 /* 1519 * Return the lhs or rhs of a mapping, with the key codes turned into printable 1520 * strings, in an allocated string. 1521 */ 1522 char_u * 1523 str2special_save(str, is_lhs) 1524 char_u *str; 1525 int is_lhs; /* TRUE for lhs, FALSE for rhs */ 1526 { 1527 garray_T ga; 1528 char_u *p = str; 1529 1530 ga_init2(&ga, 1, 40); 1531 while (*p != NUL) 1532 ga_concat(&ga, str2special(&p, is_lhs)); 1533 ga_append(&ga, NUL); 1534 return (char_u *)ga.ga_data; 1535 } 1536 #endif 1537 1538 /* 1539 * Return the printable string for the key codes at "*sp". 1540 * Used for translating the lhs or rhs of a mapping to printable chars. 1541 * Advances "sp" to the next code. 1542 */ 1543 char_u * 1544 str2special(sp, from) 1545 char_u **sp; 1546 int from; /* TRUE for lhs of mapping */ 1547 { 1548 int c; 1549 static char_u buf[7]; 1550 char_u *str = *sp; 1551 int modifiers = 0; 1552 int special = FALSE; 1553 1554 #ifdef FEAT_MBYTE 1555 if (has_mbyte) 1556 { 1557 char_u *p; 1558 1559 /* Try to un-escape a multi-byte character. Return the un-escaped 1560 * string if it is a multi-byte character. */ 1561 p = mb_unescape(sp); 1562 if (p != NULL) 1563 return p; 1564 } 1565 #endif 1566 1567 c = *str; 1568 if (c == K_SPECIAL && str[1] != NUL && str[2] != NUL) 1569 { 1570 if (str[1] == KS_MODIFIER) 1571 { 1572 modifiers = str[2]; 1573 str += 3; 1574 c = *str; 1575 } 1576 if (c == K_SPECIAL && str[1] != NUL && str[2] != NUL) 1577 { 1578 c = TO_SPECIAL(str[1], str[2]); 1579 str += 2; 1580 if (c == KS_ZERO) /* display <Nul> as ^@ or <Nul> */ 1581 c = NUL; 1582 } 1583 if (IS_SPECIAL(c) || modifiers) /* special key */ 1584 special = TRUE; 1585 } 1586 1587 #ifdef FEAT_MBYTE 1588 if (has_mbyte && !IS_SPECIAL(c)) 1589 { 1590 int len = (*mb_ptr2len)(str); 1591 1592 /* For multi-byte characters check for an illegal byte. */ 1593 if (has_mbyte && MB_BYTE2LEN(*str) > len) 1594 { 1595 transchar_nonprint(buf, c); 1596 *sp = str + 1; 1597 return buf; 1598 } 1599 /* Since 'special' is TRUE the multi-byte character 'c' will be 1600 * processed by get_special_key_name() */ 1601 c = (*mb_ptr2char)(str); 1602 *sp = str + len; 1603 } 1604 else 1605 #endif 1606 *sp = str + 1; 1607 1608 /* Make unprintable characters in <> form, also <M-Space> and <Tab>. 1609 * Use <Space> only for lhs of a mapping. */ 1610 if (special || char2cells(c) > 1 || (from && c == ' ')) 1611 return get_special_key_name(c, modifiers); 1612 buf[0] = c; 1613 buf[1] = NUL; 1614 return buf; 1615 } 1616 1617 /* 1618 * Translate a key sequence into special key names. 1619 */ 1620 void 1621 str2specialbuf(sp, buf, len) 1622 char_u *sp; 1623 char_u *buf; 1624 int len; 1625 { 1626 char_u *s; 1627 1628 *buf = NUL; 1629 while (*sp) 1630 { 1631 s = str2special(&sp, FALSE); 1632 if ((int)(STRLEN(s) + STRLEN(buf)) < len) 1633 STRCAT(buf, s); 1634 } 1635 } 1636 1637 /* 1638 * print line for :print or :list command 1639 */ 1640 void 1641 msg_prt_line(s, list) 1642 char_u *s; 1643 int list; 1644 { 1645 int c; 1646 int col = 0; 1647 int n_extra = 0; 1648 int c_extra = 0; 1649 char_u *p_extra = NULL; /* init to make SASC shut up */ 1650 int n; 1651 int attr = 0; 1652 char_u *trail = NULL; 1653 #ifdef FEAT_MBYTE 1654 int l; 1655 char_u buf[MB_MAXBYTES + 1]; 1656 #endif 1657 1658 if (curwin->w_p_list) 1659 list = TRUE; 1660 1661 /* find start of trailing whitespace */ 1662 if (list && lcs_trail) 1663 { 1664 trail = s + STRLEN(s); 1665 while (trail > s && vim_iswhite(trail[-1])) 1666 --trail; 1667 } 1668 1669 /* output a space for an empty line, otherwise the line will be 1670 * overwritten */ 1671 if (*s == NUL && !(list && lcs_eol != NUL)) 1672 msg_putchar(' '); 1673 1674 while (!got_int) 1675 { 1676 if (n_extra > 0) 1677 { 1678 --n_extra; 1679 if (c_extra) 1680 c = c_extra; 1681 else 1682 c = *p_extra++; 1683 } 1684 #ifdef FEAT_MBYTE 1685 else if (has_mbyte && (l = (*mb_ptr2len)(s)) > 1) 1686 { 1687 col += (*mb_ptr2cells)(s); 1688 if (lcs_nbsp != NUL && list && mb_ptr2char(s) == 160) 1689 { 1690 mb_char2bytes(lcs_nbsp, buf); 1691 buf[(*mb_ptr2len)(buf)] = NUL; 1692 } 1693 else 1694 { 1695 mch_memmove(buf, s, (size_t)l); 1696 buf[l] = NUL; 1697 } 1698 msg_puts(buf); 1699 s += l; 1700 continue; 1701 } 1702 #endif 1703 else 1704 { 1705 attr = 0; 1706 c = *s++; 1707 if (c == TAB && (!list || lcs_tab1)) 1708 { 1709 /* tab amount depends on current column */ 1710 n_extra = curbuf->b_p_ts - col % curbuf->b_p_ts - 1; 1711 if (!list) 1712 { 1713 c = ' '; 1714 c_extra = ' '; 1715 } 1716 else 1717 { 1718 c = lcs_tab1; 1719 c_extra = lcs_tab2; 1720 attr = hl_attr(HLF_8); 1721 } 1722 } 1723 else if (c == 160 && list && lcs_nbsp != NUL) 1724 { 1725 c = lcs_nbsp; 1726 attr = hl_attr(HLF_8); 1727 } 1728 else if (c == NUL && list && lcs_eol != NUL) 1729 { 1730 p_extra = (char_u *)""; 1731 c_extra = NUL; 1732 n_extra = 1; 1733 c = lcs_eol; 1734 attr = hl_attr(HLF_AT); 1735 --s; 1736 } 1737 else if (c != NUL && (n = byte2cells(c)) > 1) 1738 { 1739 n_extra = n - 1; 1740 p_extra = transchar_byte(c); 1741 c_extra = NUL; 1742 c = *p_extra++; 1743 /* Use special coloring to be able to distinguish <hex> from 1744 * the same in plain text. */ 1745 attr = hl_attr(HLF_8); 1746 } 1747 else if (c == ' ' && trail != NULL && s > trail) 1748 { 1749 c = lcs_trail; 1750 attr = hl_attr(HLF_8); 1751 } 1752 } 1753 1754 if (c == NUL) 1755 break; 1756 1757 msg_putchar_attr(c, attr); 1758 col++; 1759 } 1760 msg_clr_eos(); 1761 } 1762 1763 #ifdef FEAT_MBYTE 1764 /* 1765 * Use screen_puts() to output one multi-byte character. 1766 * Return the pointer "s" advanced to the next character. 1767 */ 1768 static char_u * 1769 screen_puts_mbyte(s, l, attr) 1770 char_u *s; 1771 int l; 1772 int attr; 1773 { 1774 int cw; 1775 1776 msg_didout = TRUE; /* remember that line is not empty */ 1777 cw = (*mb_ptr2cells)(s); 1778 if (cw > 1 && ( 1779 #ifdef FEAT_RIGHTLEFT 1780 cmdmsg_rl ? msg_col <= 1 : 1781 #endif 1782 msg_col == Columns - 1)) 1783 { 1784 /* Doesn't fit, print a highlighted '>' to fill it up. */ 1785 msg_screen_putchar('>', hl_attr(HLF_AT)); 1786 return s; 1787 } 1788 1789 screen_puts_len(s, l, msg_row, msg_col, attr); 1790 #ifdef FEAT_RIGHTLEFT 1791 if (cmdmsg_rl) 1792 { 1793 msg_col -= cw; 1794 if (msg_col == 0) 1795 { 1796 msg_col = Columns; 1797 ++msg_row; 1798 } 1799 } 1800 else 1801 #endif 1802 { 1803 msg_col += cw; 1804 if (msg_col >= Columns) 1805 { 1806 msg_col = 0; 1807 ++msg_row; 1808 } 1809 } 1810 return s + l; 1811 } 1812 #endif 1813 1814 /* 1815 * Output a string to the screen at position msg_row, msg_col. 1816 * Update msg_row and msg_col for the next message. 1817 */ 1818 void 1819 msg_puts(s) 1820 char_u *s; 1821 { 1822 msg_puts_attr(s, 0); 1823 } 1824 1825 void 1826 msg_puts_title(s) 1827 char_u *s; 1828 { 1829 msg_puts_attr(s, hl_attr(HLF_T)); 1830 } 1831 1832 /* 1833 * Show a message in such a way that it always fits in the line. Cut out a 1834 * part in the middle and replace it with "..." when necessary. 1835 * Does not handle multi-byte characters! 1836 */ 1837 void 1838 msg_puts_long_attr(longstr, attr) 1839 char_u *longstr; 1840 int attr; 1841 { 1842 msg_puts_long_len_attr(longstr, (int)STRLEN(longstr), attr); 1843 } 1844 1845 void 1846 msg_puts_long_len_attr(longstr, len, attr) 1847 char_u *longstr; 1848 int len; 1849 int attr; 1850 { 1851 int slen = len; 1852 int room; 1853 1854 room = Columns - msg_col; 1855 if (len > room && room >= 20) 1856 { 1857 slen = (room - 3) / 2; 1858 msg_outtrans_len_attr(longstr, slen, attr); 1859 msg_puts_attr((char_u *)"...", hl_attr(HLF_8)); 1860 } 1861 msg_outtrans_len_attr(longstr + len - slen, slen, attr); 1862 } 1863 1864 /* 1865 * Basic function for writing a message with highlight attributes. 1866 */ 1867 void 1868 msg_puts_attr(s, attr) 1869 char_u *s; 1870 int attr; 1871 { 1872 msg_puts_attr_len(s, -1, attr); 1873 } 1874 1875 /* 1876 * Like msg_puts_attr(), but with a maximum length "maxlen" (in bytes). 1877 * When "maxlen" is -1 there is no maximum length. 1878 * When "maxlen" is >= 0 the message is not put in the history. 1879 */ 1880 static void 1881 msg_puts_attr_len(str, maxlen, attr) 1882 char_u *str; 1883 int maxlen; 1884 int attr; 1885 { 1886 /* 1887 * If redirection is on, also write to the redirection file. 1888 */ 1889 redir_write(str, maxlen); 1890 1891 /* 1892 * Don't print anything when using ":silent cmd". 1893 */ 1894 if (msg_silent != 0) 1895 return; 1896 1897 /* if MSG_HIST flag set, add message to history */ 1898 if ((attr & MSG_HIST) && maxlen < 0) 1899 { 1900 add_msg_hist(str, -1, attr); 1901 attr &= ~MSG_HIST; 1902 } 1903 1904 /* 1905 * When writing something to the screen after it has scrolled, requires a 1906 * wait-return prompt later. Needed when scrolling, resetting 1907 * need_wait_return after some prompt, and then outputting something 1908 * without scrolling 1909 */ 1910 if (msg_scrolled != 0 && !msg_scrolled_ign) 1911 need_wait_return = TRUE; 1912 msg_didany = TRUE; /* remember that something was outputted */ 1913 1914 /* 1915 * If there is no valid screen, use fprintf so we can see error messages. 1916 * If termcap is not active, we may be writing in an alternate console 1917 * window, cursor positioning may not work correctly (window size may be 1918 * different, e.g. for Win32 console) or we just don't know where the 1919 * cursor is. 1920 */ 1921 if (msg_use_printf()) 1922 msg_puts_printf(str, maxlen); 1923 else 1924 msg_puts_display(str, maxlen, attr, FALSE); 1925 } 1926 1927 /* 1928 * The display part of msg_puts_attr_len(). 1929 * May be called recursively to display scroll-back text. 1930 */ 1931 static void 1932 msg_puts_display(str, maxlen, attr, recurse) 1933 char_u *str; 1934 int maxlen; 1935 int attr; 1936 int recurse; 1937 { 1938 char_u *s = str; 1939 char_u *t_s = str; /* string from "t_s" to "s" is still todo */ 1940 int t_col = 0; /* screen cells todo, 0 when "t_s" not used */ 1941 #ifdef FEAT_MBYTE 1942 int l; 1943 int cw; 1944 #endif 1945 char_u *sb_str = str; 1946 int sb_col = msg_col; 1947 int wrap; 1948 int did_last_char; 1949 1950 did_wait_return = FALSE; 1951 while ((maxlen < 0 || (int)(s - str) < maxlen) && *s != NUL) 1952 { 1953 /* 1954 * We are at the end of the screen line when: 1955 * - When outputting a newline. 1956 * - When outputting a character in the last column. 1957 */ 1958 if (!recurse && msg_row >= Rows - 1 && (*s == '\n' || ( 1959 #ifdef FEAT_RIGHTLEFT 1960 cmdmsg_rl 1961 ? ( 1962 msg_col <= 1 1963 || (*s == TAB && msg_col <= 7) 1964 # ifdef FEAT_MBYTE 1965 || (has_mbyte && (*mb_ptr2cells)(s) > 1 && msg_col <= 2) 1966 # endif 1967 ) 1968 : 1969 #endif 1970 (msg_col + t_col >= Columns - 1 1971 || (*s == TAB && msg_col + t_col >= ((Columns - 1) & ~7)) 1972 # ifdef FEAT_MBYTE 1973 || (has_mbyte && (*mb_ptr2cells)(s) > 1 1974 && msg_col + t_col >= Columns - 2) 1975 # endif 1976 )))) 1977 { 1978 /* 1979 * The screen is scrolled up when at the last row (some terminals 1980 * scroll automatically, some don't. To avoid problems we scroll 1981 * ourselves). 1982 */ 1983 if (t_col > 0) 1984 /* output postponed text */ 1985 t_puts(&t_col, t_s, s, attr); 1986 1987 /* When no more prompt and no more room, truncate here */ 1988 if (msg_no_more && lines_left == 0) 1989 break; 1990 1991 /* Scroll the screen up one line. */ 1992 msg_scroll_up(); 1993 1994 msg_row = Rows - 2; 1995 if (msg_col >= Columns) /* can happen after screen resize */ 1996 msg_col = Columns - 1; 1997 1998 /* Display char in last column before showing more-prompt. */ 1999 if (*s >= ' ' 2000 #ifdef FEAT_RIGHTLEFT 2001 && !cmdmsg_rl 2002 #endif 2003 ) 2004 { 2005 #ifdef FEAT_MBYTE 2006 if (has_mbyte) 2007 { 2008 if (enc_utf8 && maxlen >= 0) 2009 /* avoid including composing chars after the end */ 2010 l = utfc_ptr2len_len(s, (int)((str + maxlen) - s)); 2011 else 2012 l = (*mb_ptr2len)(s); 2013 s = screen_puts_mbyte(s, l, attr); 2014 } 2015 else 2016 #endif 2017 msg_screen_putchar(*s++, attr); 2018 did_last_char = TRUE; 2019 } 2020 else 2021 did_last_char = FALSE; 2022 2023 if (p_more) 2024 /* store text for scrolling back */ 2025 store_sb_text(&sb_str, s, attr, &sb_col, TRUE); 2026 2027 inc_msg_scrolled(); 2028 need_wait_return = TRUE; /* may need wait_return in main() */ 2029 if (must_redraw < VALID) 2030 must_redraw = VALID; 2031 redraw_cmdline = TRUE; 2032 if (cmdline_row > 0 && !exmode_active) 2033 --cmdline_row; 2034 2035 /* 2036 * If screen is completely filled and 'more' is set then wait 2037 * for a character. 2038 */ 2039 if (lines_left > 0) 2040 --lines_left; 2041 if (p_more && lines_left == 0 && State != HITRETURN 2042 && !msg_no_more && !exmode_active) 2043 { 2044 #ifdef FEAT_CON_DIALOG 2045 if (do_more_prompt(NUL)) 2046 s = confirm_msg_tail; 2047 #else 2048 (void)do_more_prompt(NUL); 2049 #endif 2050 if (quit_more) 2051 return; 2052 } 2053 2054 /* When we displayed a char in last column need to check if there 2055 * is still more. */ 2056 if (did_last_char) 2057 continue; 2058 } 2059 2060 wrap = *s == '\n' 2061 || msg_col + t_col >= Columns 2062 #ifdef FEAT_MBYTE 2063 || (has_mbyte && (*mb_ptr2cells)(s) > 1 2064 && msg_col + t_col >= Columns - 1) 2065 #endif 2066 ; 2067 if (t_col > 0 && (wrap || *s == '\r' || *s == '\b' 2068 || *s == '\t' || *s == BELL)) 2069 /* output any postponed text */ 2070 t_puts(&t_col, t_s, s, attr); 2071 2072 if (wrap && p_more && !recurse) 2073 /* store text for scrolling back */ 2074 store_sb_text(&sb_str, s, attr, &sb_col, TRUE); 2075 2076 if (*s == '\n') /* go to next line */ 2077 { 2078 msg_didout = FALSE; /* remember that line is empty */ 2079 #ifdef FEAT_RIGHTLEFT 2080 if (cmdmsg_rl) 2081 msg_col = Columns - 1; 2082 else 2083 #endif 2084 msg_col = 0; 2085 if (++msg_row >= Rows) /* safety check */ 2086 msg_row = Rows - 1; 2087 } 2088 else if (*s == '\r') /* go to column 0 */ 2089 { 2090 msg_col = 0; 2091 } 2092 else if (*s == '\b') /* go to previous char */ 2093 { 2094 if (msg_col) 2095 --msg_col; 2096 } 2097 else if (*s == TAB) /* translate Tab into spaces */ 2098 { 2099 do 2100 msg_screen_putchar(' ', attr); 2101 while (msg_col & 7); 2102 } 2103 else if (*s == BELL) /* beep (from ":sh") */ 2104 vim_beep(); 2105 else 2106 { 2107 #ifdef FEAT_MBYTE 2108 if (has_mbyte) 2109 { 2110 cw = (*mb_ptr2cells)(s); 2111 if (enc_utf8 && maxlen >= 0) 2112 /* avoid including composing chars after the end */ 2113 l = utfc_ptr2len_len(s, (int)((str + maxlen) - s)); 2114 else 2115 l = (*mb_ptr2len)(s); 2116 } 2117 else 2118 { 2119 cw = 1; 2120 l = 1; 2121 } 2122 #endif 2123 /* When drawing from right to left or when a double-wide character 2124 * doesn't fit, draw a single character here. Otherwise collect 2125 * characters and draw them all at once later. */ 2126 #if defined(FEAT_RIGHTLEFT) || defined(FEAT_MBYTE) 2127 if ( 2128 # ifdef FEAT_RIGHTLEFT 2129 cmdmsg_rl 2130 # ifdef FEAT_MBYTE 2131 || 2132 # endif 2133 # endif 2134 # ifdef FEAT_MBYTE 2135 (cw > 1 && msg_col + t_col >= Columns - 1) 2136 # endif 2137 ) 2138 { 2139 # ifdef FEAT_MBYTE 2140 if (l > 1) 2141 s = screen_puts_mbyte(s, l, attr) - 1; 2142 else 2143 # endif 2144 msg_screen_putchar(*s, attr); 2145 } 2146 else 2147 #endif 2148 { 2149 /* postpone this character until later */ 2150 if (t_col == 0) 2151 t_s = s; 2152 #ifdef FEAT_MBYTE 2153 t_col += cw; 2154 s += l - 1; 2155 #else 2156 ++t_col; 2157 #endif 2158 } 2159 } 2160 ++s; 2161 } 2162 2163 /* output any postponed text */ 2164 if (t_col > 0) 2165 t_puts(&t_col, t_s, s, attr); 2166 if (p_more && !recurse) 2167 store_sb_text(&sb_str, s, attr, &sb_col, FALSE); 2168 2169 msg_check(); 2170 } 2171 2172 /* 2173 * Scroll the screen up one line for displaying the next message line. 2174 */ 2175 static void 2176 msg_scroll_up() 2177 { 2178 #ifdef FEAT_GUI 2179 /* Remove the cursor before scrolling, ScreenLines[] is going 2180 * to become invalid. */ 2181 if (gui.in_use) 2182 gui_undraw_cursor(); 2183 #endif 2184 /* scrolling up always works */ 2185 screen_del_lines(0, 0, 1, (int)Rows, TRUE, NULL); 2186 2187 if (!can_clear((char_u *)" ")) 2188 { 2189 /* Scrolling up doesn't result in the right background. Set the 2190 * background here. It's not efficient, but avoids that we have to do 2191 * it all over the code. */ 2192 screen_fill((int)Rows - 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2193 2194 /* Also clear the last char of the last but one line if it was not 2195 * cleared before to avoid a scroll-up. */ 2196 if (ScreenAttrs[LineOffset[Rows - 2] + Columns - 1] == (sattr_T)-1) 2197 screen_fill((int)Rows - 2, (int)Rows - 1, 2198 (int)Columns - 1, (int)Columns, ' ', ' ', 0); 2199 } 2200 } 2201 2202 /* 2203 * Increment "msg_scrolled". 2204 */ 2205 static void 2206 inc_msg_scrolled() 2207 { 2208 #ifdef FEAT_EVAL 2209 if (*get_vim_var_str(VV_SCROLLSTART) == NUL) 2210 { 2211 char_u *p = sourcing_name; 2212 char_u *tofree = NULL; 2213 int len; 2214 2215 /* v:scrollstart is empty, set it to the script/function name and line 2216 * number */ 2217 if (p == NULL) 2218 p = (char_u *)_("Unknown"); 2219 else 2220 { 2221 len = (int)STRLEN(p) + 40; 2222 tofree = alloc(len); 2223 if (tofree != NULL) 2224 { 2225 vim_snprintf((char *)tofree, len, _("%s line %ld"), 2226 p, (long)sourcing_lnum); 2227 p = tofree; 2228 } 2229 } 2230 set_vim_var_string(VV_SCROLLSTART, p, -1); 2231 vim_free(tofree); 2232 } 2233 #endif 2234 ++msg_scrolled; 2235 } 2236 2237 /* 2238 * To be able to scroll back at the "more" and "hit-enter" prompts we need to 2239 * store the displayed text and remember where screen lines start. 2240 */ 2241 typedef struct msgchunk_S msgchunk_T; 2242 struct msgchunk_S 2243 { 2244 msgchunk_T *sb_next; 2245 msgchunk_T *sb_prev; 2246 char sb_eol; /* TRUE when line ends after this text */ 2247 int sb_msg_col; /* column in which text starts */ 2248 int sb_attr; /* text attributes */ 2249 char_u sb_text[1]; /* text to be displayed, actually longer */ 2250 }; 2251 2252 static msgchunk_T *last_msgchunk = NULL; /* last displayed text */ 2253 2254 static msgchunk_T *msg_sb_start __ARGS((msgchunk_T *mps)); 2255 static msgchunk_T *disp_sb_line __ARGS((int row, msgchunk_T *smp)); 2256 2257 static int do_clear_sb_text = FALSE; /* clear text on next msg */ 2258 2259 /* 2260 * Store part of a printed message for displaying when scrolling back. 2261 */ 2262 static void 2263 store_sb_text(sb_str, s, attr, sb_col, finish) 2264 char_u **sb_str; /* start of string */ 2265 char_u *s; /* just after string */ 2266 int attr; 2267 int *sb_col; 2268 int finish; /* line ends */ 2269 { 2270 msgchunk_T *mp; 2271 2272 if (do_clear_sb_text) 2273 { 2274 clear_sb_text(); 2275 do_clear_sb_text = FALSE; 2276 } 2277 2278 if (s > *sb_str) 2279 { 2280 mp = (msgchunk_T *)alloc((int)(sizeof(msgchunk_T) + (s - *sb_str))); 2281 if (mp != NULL) 2282 { 2283 mp->sb_eol = finish; 2284 mp->sb_msg_col = *sb_col; 2285 mp->sb_attr = attr; 2286 vim_strncpy(mp->sb_text, *sb_str, s - *sb_str); 2287 2288 if (last_msgchunk == NULL) 2289 { 2290 last_msgchunk = mp; 2291 mp->sb_prev = NULL; 2292 } 2293 else 2294 { 2295 mp->sb_prev = last_msgchunk; 2296 last_msgchunk->sb_next = mp; 2297 last_msgchunk = mp; 2298 } 2299 mp->sb_next = NULL; 2300 } 2301 } 2302 else if (finish && last_msgchunk != NULL) 2303 last_msgchunk->sb_eol = TRUE; 2304 2305 *sb_str = s; 2306 *sb_col = 0; 2307 } 2308 2309 /* 2310 * Finished showing messages, clear the scroll-back text on the next message. 2311 */ 2312 void 2313 may_clear_sb_text() 2314 { 2315 do_clear_sb_text = TRUE; 2316 } 2317 2318 /* 2319 * Clear any text remembered for scrolling back. 2320 * Called when redrawing the screen. 2321 */ 2322 void 2323 clear_sb_text() 2324 { 2325 msgchunk_T *mp; 2326 2327 while (last_msgchunk != NULL) 2328 { 2329 mp = last_msgchunk->sb_prev; 2330 vim_free(last_msgchunk); 2331 last_msgchunk = mp; 2332 } 2333 } 2334 2335 /* 2336 * "g<" command. 2337 */ 2338 void 2339 show_sb_text() 2340 { 2341 msgchunk_T *mp; 2342 2343 /* Only show something if there is more than one line, otherwise it looks 2344 * weird, typing a command without output results in one line. */ 2345 mp = msg_sb_start(last_msgchunk); 2346 if (mp == NULL || mp->sb_prev == NULL) 2347 vim_beep(); 2348 else 2349 { 2350 do_more_prompt('G'); 2351 wait_return(FALSE); 2352 } 2353 } 2354 2355 /* 2356 * Move to the start of screen line in already displayed text. 2357 */ 2358 static msgchunk_T * 2359 msg_sb_start(mps) 2360 msgchunk_T *mps; 2361 { 2362 msgchunk_T *mp = mps; 2363 2364 while (mp != NULL && mp->sb_prev != NULL && !mp->sb_prev->sb_eol) 2365 mp = mp->sb_prev; 2366 return mp; 2367 } 2368 2369 /* 2370 * Mark the last message chunk as finishing the line. 2371 */ 2372 void 2373 msg_sb_eol() 2374 { 2375 if (last_msgchunk != NULL) 2376 last_msgchunk->sb_eol = TRUE; 2377 } 2378 2379 /* 2380 * Display a screen line from previously displayed text at row "row". 2381 * Returns a pointer to the text for the next line (can be NULL). 2382 */ 2383 static msgchunk_T * 2384 disp_sb_line(row, smp) 2385 int row; 2386 msgchunk_T *smp; 2387 { 2388 msgchunk_T *mp = smp; 2389 char_u *p; 2390 2391 for (;;) 2392 { 2393 msg_row = row; 2394 msg_col = mp->sb_msg_col; 2395 p = mp->sb_text; 2396 if (*p == '\n') /* don't display the line break */ 2397 ++p; 2398 msg_puts_display(p, -1, mp->sb_attr, TRUE); 2399 if (mp->sb_eol || mp->sb_next == NULL) 2400 break; 2401 mp = mp->sb_next; 2402 } 2403 return mp->sb_next; 2404 } 2405 2406 /* 2407 * Output any postponed text for msg_puts_attr_len(). 2408 */ 2409 static void 2410 t_puts(t_col, t_s, s, attr) 2411 int *t_col; 2412 char_u *t_s; 2413 char_u *s; 2414 int attr; 2415 { 2416 /* output postponed text */ 2417 msg_didout = TRUE; /* remember that line is not empty */ 2418 screen_puts_len(t_s, (int)(s - t_s), msg_row, msg_col, attr); 2419 msg_col += *t_col; 2420 *t_col = 0; 2421 #ifdef FEAT_MBYTE 2422 /* If the string starts with a composing character don't increment the 2423 * column position for it. */ 2424 if (enc_utf8 && utf_iscomposing(utf_ptr2char(t_s))) 2425 --msg_col; 2426 #endif 2427 if (msg_col >= Columns) 2428 { 2429 msg_col = 0; 2430 ++msg_row; 2431 } 2432 } 2433 2434 /* 2435 * Returns TRUE when messages should be printed with mch_errmsg(). 2436 * This is used when there is no valid screen, so we can see error messages. 2437 * If termcap is not active, we may be writing in an alternate console 2438 * window, cursor positioning may not work correctly (window size may be 2439 * different, e.g. for Win32 console) or we just don't know where the 2440 * cursor is. 2441 */ 2442 int 2443 msg_use_printf() 2444 { 2445 return (!msg_check_screen() 2446 #if defined(WIN3264) && !defined(FEAT_GUI_MSWIN) 2447 || !termcap_active 2448 #endif 2449 || (swapping_screen() && !termcap_active) 2450 ); 2451 } 2452 2453 /* 2454 * Print a message when there is no valid screen. 2455 */ 2456 static void 2457 msg_puts_printf(str, maxlen) 2458 char_u *str; 2459 int maxlen; 2460 { 2461 char_u *s = str; 2462 char_u buf[4]; 2463 char_u *p; 2464 2465 #ifdef WIN3264 2466 if (!(silent_mode && p_verbose == 0)) 2467 mch_settmode(TMODE_COOK); /* handle '\r' and '\n' correctly */ 2468 #endif 2469 while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen)) 2470 { 2471 if (!(silent_mode && p_verbose == 0)) 2472 { 2473 /* NL --> CR NL translation (for Unix, not for "--version") */ 2474 /* NL --> CR translation (for Mac) */ 2475 p = &buf[0]; 2476 if (*s == '\n' && !info_message) 2477 *p++ = '\r'; 2478 #if defined(USE_CR) && !defined(MACOS_X_UNIX) 2479 else 2480 #endif 2481 *p++ = *s; 2482 *p = '\0'; 2483 if (info_message) /* informative message, not an error */ 2484 mch_msg((char *)buf); 2485 else 2486 mch_errmsg((char *)buf); 2487 } 2488 2489 /* primitive way to compute the current column */ 2490 #ifdef FEAT_RIGHTLEFT 2491 if (cmdmsg_rl) 2492 { 2493 if (*s == '\r' || *s == '\n') 2494 msg_col = Columns - 1; 2495 else 2496 --msg_col; 2497 } 2498 else 2499 #endif 2500 { 2501 if (*s == '\r' || *s == '\n') 2502 msg_col = 0; 2503 else 2504 ++msg_col; 2505 } 2506 ++s; 2507 } 2508 msg_didout = TRUE; /* assume that line is not empty */ 2509 2510 #ifdef WIN3264 2511 if (!(silent_mode && p_verbose == 0)) 2512 mch_settmode(TMODE_RAW); 2513 #endif 2514 } 2515 2516 /* 2517 * Show the more-prompt and handle the user response. 2518 * This takes care of scrolling back and displaying previously displayed text. 2519 * When at hit-enter prompt "typed_char" is the already typed character, 2520 * otherwise it's NUL. 2521 * Returns TRUE when jumping ahead to "confirm_msg_tail". 2522 */ 2523 static int 2524 do_more_prompt(typed_char) 2525 int typed_char; 2526 { 2527 int used_typed_char = typed_char; 2528 int oldState = State; 2529 int c; 2530 #ifdef FEAT_CON_DIALOG 2531 int retval = FALSE; 2532 #endif 2533 int toscroll; 2534 msgchunk_T *mp_last = NULL; 2535 msgchunk_T *mp; 2536 int i; 2537 2538 if (typed_char == 'G') 2539 { 2540 /* "g<": Find first line on the last page. */ 2541 mp_last = msg_sb_start(last_msgchunk); 2542 for (i = 0; i < Rows - 2 && mp_last != NULL 2543 && mp_last->sb_prev != NULL; ++i) 2544 mp_last = msg_sb_start(mp_last->sb_prev); 2545 } 2546 2547 State = ASKMORE; 2548 #ifdef FEAT_MOUSE 2549 setmouse(); 2550 #endif 2551 if (typed_char == NUL) 2552 msg_moremsg(FALSE); 2553 for (;;) 2554 { 2555 /* 2556 * Get a typed character directly from the user. 2557 */ 2558 if (used_typed_char != NUL) 2559 { 2560 c = used_typed_char; /* was typed at hit-enter prompt */ 2561 used_typed_char = NUL; 2562 } 2563 else 2564 c = get_keystroke(); 2565 2566 #if defined(FEAT_MENU) && defined(FEAT_GUI) 2567 if (c == K_MENU) 2568 { 2569 int idx = get_menu_index(current_menu, ASKMORE); 2570 2571 /* Used a menu. If it starts with CTRL-Y, it must 2572 * be a "Copy" for the clipboard. Otherwise 2573 * assume that we end */ 2574 if (idx == MENU_INDEX_INVALID) 2575 continue; 2576 c = *current_menu->strings[idx]; 2577 if (c != NUL && current_menu->strings[idx][1] != NUL) 2578 ins_typebuf(current_menu->strings[idx] + 1, 2579 current_menu->noremap[idx], 0, TRUE, 2580 current_menu->silent[idx]); 2581 } 2582 #endif 2583 2584 toscroll = 0; 2585 switch (c) 2586 { 2587 case BS: /* scroll one line back */ 2588 case K_BS: 2589 case 'k': 2590 case K_UP: 2591 toscroll = -1; 2592 break; 2593 2594 case CAR: /* one extra line */ 2595 case NL: 2596 case 'j': 2597 case K_DOWN: 2598 toscroll = 1; 2599 break; 2600 2601 case 'u': /* Up half a page */ 2602 toscroll = -(Rows / 2); 2603 break; 2604 2605 case 'd': /* Down half a page */ 2606 toscroll = Rows / 2; 2607 break; 2608 2609 case 'b': /* one page back */ 2610 case K_PAGEUP: 2611 toscroll = -(Rows - 1); 2612 break; 2613 2614 case ' ': /* one extra page */ 2615 case 'f': 2616 case K_PAGEDOWN: 2617 case K_LEFTMOUSE: 2618 toscroll = Rows - 1; 2619 break; 2620 2621 case 'g': /* all the way back to the start */ 2622 toscroll = -999999; 2623 break; 2624 2625 case 'G': /* all the way to the end */ 2626 toscroll = 999999; 2627 lines_left = 999999; 2628 break; 2629 2630 case ':': /* start new command line */ 2631 #ifdef FEAT_CON_DIALOG 2632 if (!confirm_msg_used) 2633 #endif 2634 { 2635 /* Since got_int is set all typeahead will be flushed, but we 2636 * want to keep this ':', remember that in a special way. */ 2637 typeahead_noflush(':'); 2638 cmdline_row = Rows - 1; /* put ':' on this line */ 2639 skip_redraw = TRUE; /* skip redraw once */ 2640 need_wait_return = FALSE; /* don't wait in main() */ 2641 } 2642 /*FALLTHROUGH*/ 2643 case 'q': /* quit */ 2644 case Ctrl_C: 2645 case ESC: 2646 #ifdef FEAT_CON_DIALOG 2647 if (confirm_msg_used) 2648 { 2649 /* Jump to the choices of the dialog. */ 2650 retval = TRUE; 2651 } 2652 else 2653 #endif 2654 { 2655 got_int = TRUE; 2656 quit_more = TRUE; 2657 } 2658 /* When there is some more output (wrapping line) display that 2659 * without another prompt. */ 2660 lines_left = Rows - 1; 2661 break; 2662 2663 #ifdef FEAT_CLIPBOARD 2664 case Ctrl_Y: 2665 /* Strange way to allow copying (yanking) a modeless 2666 * selection at the more prompt. Use CTRL-Y, 2667 * because the same is used in Cmdline-mode and at the 2668 * hit-enter prompt. However, scrolling one line up 2669 * might be expected... */ 2670 if (clip_star.state == SELECT_DONE) 2671 clip_copy_modeless_selection(TRUE); 2672 continue; 2673 #endif 2674 default: /* no valid response */ 2675 msg_moremsg(TRUE); 2676 continue; 2677 } 2678 2679 if (toscroll != 0) 2680 { 2681 if (toscroll < 0) 2682 { 2683 /* go to start of last line */ 2684 if (mp_last == NULL) 2685 mp = msg_sb_start(last_msgchunk); 2686 else if (mp_last->sb_prev != NULL) 2687 mp = msg_sb_start(mp_last->sb_prev); 2688 else 2689 mp = NULL; 2690 2691 /* go to start of line at top of the screen */ 2692 for (i = 0; i < Rows - 2 && mp != NULL && mp->sb_prev != NULL; 2693 ++i) 2694 mp = msg_sb_start(mp->sb_prev); 2695 2696 if (mp != NULL && mp->sb_prev != NULL) 2697 { 2698 /* Find line to be displayed at top. */ 2699 for (i = 0; i > toscroll; --i) 2700 { 2701 if (mp == NULL || mp->sb_prev == NULL) 2702 break; 2703 mp = msg_sb_start(mp->sb_prev); 2704 if (mp_last == NULL) 2705 mp_last = msg_sb_start(last_msgchunk); 2706 else 2707 mp_last = msg_sb_start(mp_last->sb_prev); 2708 } 2709 2710 if (toscroll == -1 && screen_ins_lines(0, 0, 1, 2711 (int)Rows, NULL) == OK) 2712 { 2713 /* display line at top */ 2714 (void)disp_sb_line(0, mp); 2715 } 2716 else 2717 { 2718 /* redisplay all lines */ 2719 screenclear(); 2720 for (i = 0; mp != NULL && i < Rows - 1; ++i) 2721 { 2722 mp = disp_sb_line(i, mp); 2723 ++msg_scrolled; 2724 } 2725 } 2726 toscroll = 0; 2727 } 2728 } 2729 else 2730 { 2731 /* First display any text that we scrolled back. */ 2732 while (toscroll > 0 && mp_last != NULL) 2733 { 2734 /* scroll up, display line at bottom */ 2735 msg_scroll_up(); 2736 inc_msg_scrolled(); 2737 screen_fill((int)Rows - 2, (int)Rows - 1, 0, 2738 (int)Columns, ' ', ' ', 0); 2739 mp_last = disp_sb_line((int)Rows - 2, mp_last); 2740 --toscroll; 2741 } 2742 } 2743 2744 if (toscroll <= 0) 2745 { 2746 /* displayed the requested text, more prompt again */ 2747 screen_fill((int)Rows - 1, (int)Rows, 0, 2748 (int)Columns, ' ', ' ', 0); 2749 msg_moremsg(FALSE); 2750 continue; 2751 } 2752 2753 /* display more text, return to caller */ 2754 lines_left = toscroll; 2755 } 2756 2757 break; 2758 } 2759 2760 /* clear the --more-- message */ 2761 screen_fill((int)Rows - 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2762 State = oldState; 2763 #ifdef FEAT_MOUSE 2764 setmouse(); 2765 #endif 2766 if (quit_more) 2767 { 2768 msg_row = Rows - 1; 2769 msg_col = 0; 2770 } 2771 #ifdef FEAT_RIGHTLEFT 2772 else if (cmdmsg_rl) 2773 msg_col = Columns - 1; 2774 #endif 2775 2776 #ifdef FEAT_CON_DIALOG 2777 return retval; 2778 #else 2779 return FALSE; 2780 #endif 2781 } 2782 2783 #if defined(USE_MCH_ERRMSG) || defined(PROTO) 2784 2785 #ifdef mch_errmsg 2786 # undef mch_errmsg 2787 #endif 2788 #ifdef mch_msg 2789 # undef mch_msg 2790 #endif 2791 2792 /* 2793 * Give an error message. To be used when the screen hasn't been initialized 2794 * yet. When stderr can't be used, collect error messages until the GUI has 2795 * started and they can be displayed in a message box. 2796 */ 2797 void 2798 mch_errmsg(str) 2799 char *str; 2800 { 2801 int len; 2802 2803 #if (defined(UNIX) || defined(FEAT_GUI)) && !defined(ALWAYS_USE_GUI) 2804 /* On Unix use stderr if it's a tty. 2805 * When not going to start the GUI also use stderr. 2806 * On Mac, when started from Finder, stderr is the console. */ 2807 if ( 2808 # ifdef UNIX 2809 # ifdef MACOS_X_UNIX 2810 (isatty(2) && strcmp("/dev/console", ttyname(2)) != 0) 2811 # else 2812 isatty(2) 2813 # endif 2814 # ifdef FEAT_GUI 2815 || 2816 # endif 2817 # endif 2818 # ifdef FEAT_GUI 2819 !(gui.in_use || gui.starting) 2820 # endif 2821 ) 2822 { 2823 fprintf(stderr, "%s", str); 2824 return; 2825 } 2826 #endif 2827 2828 /* avoid a delay for a message that isn't there */ 2829 emsg_on_display = FALSE; 2830 2831 len = (int)STRLEN(str) + 1; 2832 if (error_ga.ga_growsize == 0) 2833 { 2834 error_ga.ga_growsize = 80; 2835 error_ga.ga_itemsize = 1; 2836 } 2837 if (ga_grow(&error_ga, len) == OK) 2838 { 2839 mch_memmove((char_u *)error_ga.ga_data + error_ga.ga_len, 2840 (char_u *)str, len); 2841 #ifdef UNIX 2842 /* remove CR characters, they are displayed */ 2843 { 2844 char_u *p; 2845 2846 p = (char_u *)error_ga.ga_data + error_ga.ga_len; 2847 for (;;) 2848 { 2849 p = vim_strchr(p, '\r'); 2850 if (p == NULL) 2851 break; 2852 *p = ' '; 2853 } 2854 } 2855 #endif 2856 --len; /* don't count the NUL at the end */ 2857 error_ga.ga_len += len; 2858 } 2859 } 2860 2861 /* 2862 * Give a message. To be used when the screen hasn't been initialized yet. 2863 * When there is no tty, collect messages until the GUI has started and they 2864 * can be displayed in a message box. 2865 */ 2866 void 2867 mch_msg(str) 2868 char *str; 2869 { 2870 #if (defined(UNIX) || defined(FEAT_GUI)) && !defined(ALWAYS_USE_GUI) 2871 /* On Unix use stdout if we have a tty. This allows "vim -h | more" and 2872 * uses mch_errmsg() when started from the desktop. 2873 * When not going to start the GUI also use stdout. 2874 * On Mac, when started from Finder, stderr is the console. */ 2875 if ( 2876 # ifdef UNIX 2877 # ifdef MACOS_X_UNIX 2878 (isatty(2) && strcmp("/dev/console", ttyname(2)) != 0) 2879 # else 2880 isatty(2) 2881 # endif 2882 # ifdef FEAT_GUI 2883 || 2884 # endif 2885 # endif 2886 # ifdef FEAT_GUI 2887 !(gui.in_use || gui.starting) 2888 # endif 2889 ) 2890 { 2891 printf("%s", str); 2892 return; 2893 } 2894 # endif 2895 mch_errmsg(str); 2896 } 2897 #endif /* USE_MCH_ERRMSG */ 2898 2899 /* 2900 * Put a character on the screen at the current message position and advance 2901 * to the next position. Only for printable ASCII! 2902 */ 2903 static void 2904 msg_screen_putchar(c, attr) 2905 int c; 2906 int attr; 2907 { 2908 msg_didout = TRUE; /* remember that line is not empty */ 2909 screen_putchar(c, msg_row, msg_col, attr); 2910 #ifdef FEAT_RIGHTLEFT 2911 if (cmdmsg_rl) 2912 { 2913 if (--msg_col == 0) 2914 { 2915 msg_col = Columns; 2916 ++msg_row; 2917 } 2918 } 2919 else 2920 #endif 2921 { 2922 if (++msg_col >= Columns) 2923 { 2924 msg_col = 0; 2925 ++msg_row; 2926 } 2927 } 2928 } 2929 2930 void 2931 msg_moremsg(full) 2932 int full; 2933 { 2934 int attr; 2935 char_u *s = (char_u *)_("-- More --"); 2936 2937 attr = hl_attr(HLF_M); 2938 screen_puts(s, (int)Rows - 1, 0, attr); 2939 if (full) 2940 screen_puts((char_u *) 2941 _(" SPACE/d/j: screen/page/line down, b/u/k: up, q: quit "), 2942 (int)Rows - 1, vim_strsize(s), attr); 2943 } 2944 2945 /* 2946 * Repeat the message for the current mode: ASKMORE, EXTERNCMD, CONFIRM or 2947 * exmode_active. 2948 */ 2949 void 2950 repeat_message() 2951 { 2952 if (State == ASKMORE) 2953 { 2954 msg_moremsg(TRUE); /* display --more-- message again */ 2955 msg_row = Rows - 1; 2956 } 2957 #ifdef FEAT_CON_DIALOG 2958 else if (State == CONFIRM) 2959 { 2960 display_confirm_msg(); /* display ":confirm" message again */ 2961 msg_row = Rows - 1; 2962 } 2963 #endif 2964 else if (State == EXTERNCMD) 2965 { 2966 windgoto(msg_row, msg_col); /* put cursor back */ 2967 } 2968 else if (State == HITRETURN || State == SETWSIZE) 2969 { 2970 if (msg_row == Rows - 1) 2971 { 2972 /* Avoid drawing the "hit-enter" prompt below the previous one, 2973 * overwrite it. Esp. useful when regaining focus and a 2974 * FocusGained autocmd exists but didn't draw anything. */ 2975 msg_didout = FALSE; 2976 msg_col = 0; 2977 msg_clr_eos(); 2978 } 2979 hit_return_msg(); 2980 msg_row = Rows - 1; 2981 } 2982 } 2983 2984 /* 2985 * msg_check_screen - check if the screen is initialized. 2986 * Also check msg_row and msg_col, if they are too big it may cause a crash. 2987 * While starting the GUI the terminal codes will be set for the GUI, but the 2988 * output goes to the terminal. Don't use the terminal codes then. 2989 */ 2990 static int 2991 msg_check_screen() 2992 { 2993 if (!full_screen || !screen_valid(FALSE)) 2994 return FALSE; 2995 2996 if (msg_row >= Rows) 2997 msg_row = Rows - 1; 2998 if (msg_col >= Columns) 2999 msg_col = Columns - 1; 3000 return TRUE; 3001 } 3002 3003 /* 3004 * Clear from current message position to end of screen. 3005 * Skip this when ":silent" was used, no need to clear for redirection. 3006 */ 3007 void 3008 msg_clr_eos() 3009 { 3010 if (msg_silent == 0) 3011 msg_clr_eos_force(); 3012 } 3013 3014 /* 3015 * Clear from current message position to end of screen. 3016 * Note: msg_col is not updated, so we remember the end of the message 3017 * for msg_check(). 3018 */ 3019 void 3020 msg_clr_eos_force() 3021 { 3022 if (msg_use_printf()) 3023 { 3024 if (full_screen) /* only when termcap codes are valid */ 3025 { 3026 if (*T_CD) 3027 out_str(T_CD); /* clear to end of display */ 3028 else if (*T_CE) 3029 out_str(T_CE); /* clear to end of line */ 3030 } 3031 } 3032 else 3033 { 3034 #ifdef FEAT_RIGHTLEFT 3035 if (cmdmsg_rl) 3036 { 3037 screen_fill(msg_row, msg_row + 1, 0, msg_col + 1, ' ', ' ', 0); 3038 screen_fill(msg_row + 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 3039 } 3040 else 3041 #endif 3042 { 3043 screen_fill(msg_row, msg_row + 1, msg_col, (int)Columns, 3044 ' ', ' ', 0); 3045 screen_fill(msg_row + 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 3046 } 3047 } 3048 } 3049 3050 /* 3051 * Clear the command line. 3052 */ 3053 void 3054 msg_clr_cmdline() 3055 { 3056 msg_row = cmdline_row; 3057 msg_col = 0; 3058 msg_clr_eos_force(); 3059 } 3060 3061 /* 3062 * end putting a message on the screen 3063 * call wait_return if the message does not fit in the available space 3064 * return TRUE if wait_return not called. 3065 */ 3066 int 3067 msg_end() 3068 { 3069 /* 3070 * if the string is larger than the window, 3071 * or the ruler option is set and we run into it, 3072 * we have to redraw the window. 3073 * Do not do this if we are abandoning the file or editing the command line. 3074 */ 3075 if (!exiting && need_wait_return && !(State & CMDLINE)) 3076 { 3077 wait_return(FALSE); 3078 return FALSE; 3079 } 3080 out_flush(); 3081 return TRUE; 3082 } 3083 3084 /* 3085 * If the written message runs into the shown command or ruler, we have to 3086 * wait for hit-return and redraw the window later. 3087 */ 3088 void 3089 msg_check() 3090 { 3091 if (msg_row == Rows - 1 && msg_col >= sc_col) 3092 { 3093 need_wait_return = TRUE; 3094 redraw_cmdline = TRUE; 3095 } 3096 } 3097 3098 /* 3099 * May write a string to the redirection file. 3100 * When "maxlen" is -1 write the whole string, otherwise up to "maxlen" bytes. 3101 */ 3102 static void 3103 redir_write(str, maxlen) 3104 char_u *str; 3105 int maxlen; 3106 { 3107 char_u *s = str; 3108 static int cur_col = 0; 3109 3110 /* Don't do anything for displaying prompts and the like. */ 3111 if (redir_off) 3112 return; 3113 3114 /* If 'verbosefile' is set prepare for writing in that file. */ 3115 if (*p_vfile != NUL && verbose_fd == NULL) 3116 verbose_open(); 3117 3118 if (redirecting()) 3119 { 3120 /* If the string doesn't start with CR or NL, go to msg_col */ 3121 if (*s != '\n' && *s != '\r') 3122 { 3123 while (cur_col < msg_col) 3124 { 3125 #ifdef FEAT_EVAL 3126 if (redir_reg) 3127 write_reg_contents(redir_reg, (char_u *)" ", -1, TRUE); 3128 else if (redir_vname) 3129 var_redir_str((char_u *)" ", -1); 3130 else 3131 #endif 3132 if (redir_fd != NULL) 3133 fputs(" ", redir_fd); 3134 if (verbose_fd != NULL) 3135 fputs(" ", verbose_fd); 3136 ++cur_col; 3137 } 3138 } 3139 3140 #ifdef FEAT_EVAL 3141 if (redir_reg) 3142 write_reg_contents(redir_reg, s, maxlen, TRUE); 3143 if (redir_vname) 3144 var_redir_str(s, maxlen); 3145 #endif 3146 3147 /* Write and adjust the current column. */ 3148 while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen)) 3149 { 3150 #ifdef FEAT_EVAL 3151 if (!redir_reg && !redir_vname) 3152 #endif 3153 if (redir_fd != NULL) 3154 putc(*s, redir_fd); 3155 if (verbose_fd != NULL) 3156 putc(*s, verbose_fd); 3157 if (*s == '\r' || *s == '\n') 3158 cur_col = 0; 3159 else if (*s == '\t') 3160 cur_col += (8 - cur_col % 8); 3161 else 3162 ++cur_col; 3163 ++s; 3164 } 3165 3166 if (msg_silent != 0) /* should update msg_col */ 3167 msg_col = cur_col; 3168 } 3169 } 3170 3171 int 3172 redirecting() 3173 { 3174 return redir_fd != NULL || *p_vfile != NUL 3175 #ifdef FEAT_EVAL 3176 || redir_reg || redir_vname 3177 #endif 3178 ; 3179 } 3180 3181 /* 3182 * Before giving verbose message. 3183 * Must always be called paired with verbose_leave()! 3184 */ 3185 void 3186 verbose_enter() 3187 { 3188 if (*p_vfile != NUL) 3189 ++msg_silent; 3190 } 3191 3192 /* 3193 * After giving verbose message. 3194 * Must always be called paired with verbose_enter()! 3195 */ 3196 void 3197 verbose_leave() 3198 { 3199 if (*p_vfile != NUL) 3200 if (--msg_silent < 0) 3201 msg_silent = 0; 3202 } 3203 3204 /* 3205 * Like verbose_enter() and set msg_scroll when displaying the message. 3206 */ 3207 void 3208 verbose_enter_scroll() 3209 { 3210 if (*p_vfile != NUL) 3211 ++msg_silent; 3212 else 3213 /* always scroll up, don't overwrite */ 3214 msg_scroll = TRUE; 3215 } 3216 3217 /* 3218 * Like verbose_leave() and set cmdline_row when displaying the message. 3219 */ 3220 void 3221 verbose_leave_scroll() 3222 { 3223 if (*p_vfile != NUL) 3224 { 3225 if (--msg_silent < 0) 3226 msg_silent = 0; 3227 } 3228 else 3229 cmdline_row = msg_row; 3230 } 3231 3232 /* 3233 * Called when 'verbosefile' is set: stop writing to the file. 3234 */ 3235 void 3236 verbose_stop() 3237 { 3238 if (verbose_fd != NULL) 3239 { 3240 fclose(verbose_fd); 3241 verbose_fd = NULL; 3242 } 3243 verbose_did_open = FALSE; 3244 } 3245 3246 /* 3247 * Open the file 'verbosefile'. 3248 * Return FAIL or OK. 3249 */ 3250 int 3251 verbose_open() 3252 { 3253 if (verbose_fd == NULL && !verbose_did_open) 3254 { 3255 /* Only give the error message once. */ 3256 verbose_did_open = TRUE; 3257 3258 verbose_fd = mch_fopen((char *)p_vfile, "a"); 3259 if (verbose_fd == NULL) 3260 { 3261 EMSG2(_(e_notopen), p_vfile); 3262 return FAIL; 3263 } 3264 } 3265 return OK; 3266 } 3267 3268 /* 3269 * Give a warning message (for searching). 3270 * Use 'w' highlighting and may repeat the message after redrawing 3271 */ 3272 void 3273 give_warning(message, hl) 3274 char_u *message; 3275 int hl; 3276 { 3277 /* Don't do this for ":silent". */ 3278 if (msg_silent != 0) 3279 return; 3280 3281 /* Don't want a hit-enter prompt here. */ 3282 ++no_wait_return; 3283 3284 #ifdef FEAT_EVAL 3285 set_vim_var_string(VV_WARNINGMSG, message, -1); 3286 #endif 3287 vim_free(keep_msg); 3288 keep_msg = NULL; 3289 if (hl) 3290 keep_msg_attr = hl_attr(HLF_W); 3291 else 3292 keep_msg_attr = 0; 3293 if (msg_attr(message, keep_msg_attr) && msg_scrolled == 0) 3294 set_keep_msg(message, keep_msg_attr); 3295 msg_didout = FALSE; /* overwrite this message */ 3296 msg_nowait = TRUE; /* don't wait for this message */ 3297 msg_col = 0; 3298 3299 --no_wait_return; 3300 } 3301 3302 /* 3303 * Advance msg cursor to column "col". 3304 */ 3305 void 3306 msg_advance(col) 3307 int col; 3308 { 3309 if (msg_silent != 0) /* nothing to advance to */ 3310 { 3311 msg_col = col; /* for redirection, may fill it up later */ 3312 return; 3313 } 3314 if (col >= Columns) /* not enough room */ 3315 col = Columns - 1; 3316 #ifdef FEAT_RIGHTLEFT 3317 if (cmdmsg_rl) 3318 while (msg_col > Columns - col) 3319 msg_putchar(' '); 3320 else 3321 #endif 3322 while (msg_col < col) 3323 msg_putchar(' '); 3324 } 3325 3326 #if defined(FEAT_CON_DIALOG) || defined(PROTO) 3327 /* 3328 * Used for "confirm()" function, and the :confirm command prefix. 3329 * Versions which haven't got flexible dialogs yet, and console 3330 * versions, get this generic handler which uses the command line. 3331 * 3332 * type = one of: 3333 * VIM_QUESTION, VIM_INFO, VIM_WARNING, VIM_ERROR or VIM_GENERIC 3334 * title = title string (can be NULL for default) 3335 * (neither used in console dialogs at the moment) 3336 * 3337 * Format of the "buttons" string: 3338 * "Button1Name\nButton2Name\nButton3Name" 3339 * The first button should normally be the default/accept 3340 * The second button should be the 'Cancel' button 3341 * Other buttons- use your imagination! 3342 * A '&' in a button name becomes a shortcut, so each '&' should be before a 3343 * different letter. 3344 */ 3345 int 3346 do_dialog(type, title, message, buttons, dfltbutton, textfield, ex_cmd) 3347 int type UNUSED; 3348 char_u *title UNUSED; 3349 char_u *message; 3350 char_u *buttons; 3351 int dfltbutton; 3352 char_u *textfield UNUSED; /* IObuff for inputdialog(), NULL 3353 otherwise */ 3354 int ex_cmd; /* when TRUE pressing : accepts default and starts 3355 Ex command */ 3356 { 3357 int oldState; 3358 int retval = 0; 3359 char_u *hotkeys; 3360 int c; 3361 int i; 3362 3363 #ifndef NO_CONSOLE 3364 /* Don't output anything in silent mode ("ex -s") */ 3365 if (silent_mode) 3366 return dfltbutton; /* return default option */ 3367 #endif 3368 3369 #ifdef FEAT_GUI_DIALOG 3370 /* When GUI is running and 'c' not in 'guioptions', use the GUI dialog */ 3371 if (gui.in_use && vim_strchr(p_go, GO_CONDIALOG) == NULL) 3372 { 3373 c = gui_mch_dialog(type, title, message, buttons, dfltbutton, 3374 textfield, ex_cmd); 3375 /* avoid a hit-enter prompt without clearing the cmdline */ 3376 need_wait_return = FALSE; 3377 emsg_on_display = FALSE; 3378 cmdline_row = msg_row; 3379 3380 /* Flush output to avoid that further messages and redrawing is done 3381 * in the wrong order. */ 3382 out_flush(); 3383 gui_mch_update(); 3384 3385 return c; 3386 } 3387 #endif 3388 3389 oldState = State; 3390 State = CONFIRM; 3391 #ifdef FEAT_MOUSE 3392 setmouse(); 3393 #endif 3394 3395 /* 3396 * Since we wait for a keypress, don't make the 3397 * user press RETURN as well afterwards. 3398 */ 3399 ++no_wait_return; 3400 hotkeys = msg_show_console_dialog(message, buttons, dfltbutton); 3401 3402 if (hotkeys != NULL) 3403 { 3404 for (;;) 3405 { 3406 /* Get a typed character directly from the user. */ 3407 c = get_keystroke(); 3408 switch (c) 3409 { 3410 case CAR: /* User accepts default option */ 3411 case NL: 3412 retval = dfltbutton; 3413 break; 3414 case Ctrl_C: /* User aborts/cancels */ 3415 case ESC: 3416 retval = 0; 3417 break; 3418 default: /* Could be a hotkey? */ 3419 if (c < 0) /* special keys are ignored here */ 3420 continue; 3421 if (c == ':' && ex_cmd) 3422 { 3423 retval = dfltbutton; 3424 ins_char_typebuf(':'); 3425 break; 3426 } 3427 3428 /* Make the character lowercase, as chars in "hotkeys" are. */ 3429 c = MB_TOLOWER(c); 3430 retval = 1; 3431 for (i = 0; hotkeys[i]; ++i) 3432 { 3433 #ifdef FEAT_MBYTE 3434 if (has_mbyte) 3435 { 3436 if ((*mb_ptr2char)(hotkeys + i) == c) 3437 break; 3438 i += (*mb_ptr2len)(hotkeys + i) - 1; 3439 } 3440 else 3441 #endif 3442 if (hotkeys[i] == c) 3443 break; 3444 ++retval; 3445 } 3446 if (hotkeys[i]) 3447 break; 3448 /* No hotkey match, so keep waiting */ 3449 continue; 3450 } 3451 break; 3452 } 3453 3454 vim_free(hotkeys); 3455 } 3456 3457 State = oldState; 3458 #ifdef FEAT_MOUSE 3459 setmouse(); 3460 #endif 3461 --no_wait_return; 3462 msg_end_prompt(); 3463 3464 return retval; 3465 } 3466 3467 static int copy_char __ARGS((char_u *from, char_u *to, int lowercase)); 3468 3469 /* 3470 * Copy one character from "*from" to "*to", taking care of multi-byte 3471 * characters. Return the length of the character in bytes. 3472 */ 3473 static int 3474 copy_char(from, to, lowercase) 3475 char_u *from; 3476 char_u *to; 3477 int lowercase; /* make character lower case */ 3478 { 3479 #ifdef FEAT_MBYTE 3480 int len; 3481 int c; 3482 3483 if (has_mbyte) 3484 { 3485 if (lowercase) 3486 { 3487 c = MB_TOLOWER((*mb_ptr2char)(from)); 3488 return (*mb_char2bytes)(c, to); 3489 } 3490 else 3491 { 3492 len = (*mb_ptr2len)(from); 3493 mch_memmove(to, from, (size_t)len); 3494 return len; 3495 } 3496 } 3497 else 3498 #endif 3499 { 3500 if (lowercase) 3501 *to = (char_u)TOLOWER_LOC(*from); 3502 else 3503 *to = *from; 3504 return 1; 3505 } 3506 } 3507 3508 /* 3509 * Format the dialog string, and display it at the bottom of 3510 * the screen. Return a string of hotkey chars (if defined) for 3511 * each 'button'. If a button has no hotkey defined, the first character of 3512 * the button is used. 3513 * The hotkeys can be multi-byte characters, but without combining chars. 3514 * 3515 * Returns an allocated string with hotkeys, or NULL for error. 3516 */ 3517 static char_u * 3518 msg_show_console_dialog(message, buttons, dfltbutton) 3519 char_u *message; 3520 char_u *buttons; 3521 int dfltbutton; 3522 { 3523 int len = 0; 3524 #ifdef FEAT_MBYTE 3525 # define HOTK_LEN (has_mbyte ? MB_MAXBYTES : 1) 3526 #else 3527 # define HOTK_LEN 1 3528 #endif 3529 int lenhotkey = HOTK_LEN; /* count first button */ 3530 char_u *hotk = NULL; 3531 char_u *msgp = NULL; 3532 char_u *hotkp = NULL; 3533 char_u *r; 3534 int copy; 3535 #define HAS_HOTKEY_LEN 30 3536 char_u has_hotkey[HAS_HOTKEY_LEN]; 3537 int first_hotkey = FALSE; /* first char of button is hotkey */ 3538 int idx; 3539 3540 has_hotkey[0] = FALSE; 3541 3542 /* 3543 * First loop: compute the size of memory to allocate. 3544 * Second loop: copy to the allocated memory. 3545 */ 3546 for (copy = 0; copy <= 1; ++copy) 3547 { 3548 r = buttons; 3549 idx = 0; 3550 while (*r) 3551 { 3552 if (*r == DLG_BUTTON_SEP) 3553 { 3554 if (copy) 3555 { 3556 *msgp++ = ','; 3557 *msgp++ = ' '; /* '\n' -> ', ' */ 3558 3559 /* advance to next hotkey and set default hotkey */ 3560 #ifdef FEAT_MBYTE 3561 if (has_mbyte) 3562 hotkp += STRLEN(hotkp); 3563 else 3564 #endif 3565 ++hotkp; 3566 hotkp[copy_char(r + 1, hotkp, TRUE)] = NUL; 3567 if (dfltbutton) 3568 --dfltbutton; 3569 3570 /* If no hotkey is specified first char is used. */ 3571 if (idx < HAS_HOTKEY_LEN - 1 && !has_hotkey[++idx]) 3572 first_hotkey = TRUE; 3573 } 3574 else 3575 { 3576 len += 3; /* '\n' -> ', '; 'x' -> '(x)' */ 3577 lenhotkey += HOTK_LEN; /* each button needs a hotkey */ 3578 if (idx < HAS_HOTKEY_LEN - 1) 3579 has_hotkey[++idx] = FALSE; 3580 } 3581 } 3582 else if (*r == DLG_HOTKEY_CHAR || first_hotkey) 3583 { 3584 if (*r == DLG_HOTKEY_CHAR) 3585 ++r; 3586 first_hotkey = FALSE; 3587 if (copy) 3588 { 3589 if (*r == DLG_HOTKEY_CHAR) /* '&&a' -> '&a' */ 3590 *msgp++ = *r; 3591 else 3592 { 3593 /* '&a' -> '[a]' */ 3594 *msgp++ = (dfltbutton == 1) ? '[' : '('; 3595 msgp += copy_char(r, msgp, FALSE); 3596 *msgp++ = (dfltbutton == 1) ? ']' : ')'; 3597 3598 /* redefine hotkey */ 3599 hotkp[copy_char(r, hotkp, TRUE)] = NUL; 3600 } 3601 } 3602 else 3603 { 3604 ++len; /* '&a' -> '[a]' */ 3605 if (idx < HAS_HOTKEY_LEN - 1) 3606 has_hotkey[idx] = TRUE; 3607 } 3608 } 3609 else 3610 { 3611 /* everything else copy literally */ 3612 if (copy) 3613 msgp += copy_char(r, msgp, FALSE); 3614 } 3615 3616 /* advance to the next character */ 3617 mb_ptr_adv(r); 3618 } 3619 3620 if (copy) 3621 { 3622 *msgp++ = ':'; 3623 *msgp++ = ' '; 3624 *msgp = NUL; 3625 } 3626 else 3627 { 3628 len += (int)(STRLEN(message) 3629 + 2 /* for the NL's */ 3630 + STRLEN(buttons) 3631 + 3); /* for the ": " and NUL */ 3632 lenhotkey++; /* for the NUL */ 3633 3634 /* If no hotkey is specified first char is used. */ 3635 if (!has_hotkey[0]) 3636 { 3637 first_hotkey = TRUE; 3638 len += 2; /* "x" -> "[x]" */ 3639 } 3640 3641 /* 3642 * Now allocate and load the strings 3643 */ 3644 vim_free(confirm_msg); 3645 confirm_msg = alloc(len); 3646 if (confirm_msg == NULL) 3647 return NULL; 3648 *confirm_msg = NUL; 3649 hotk = alloc(lenhotkey); 3650 if (hotk == NULL) 3651 return NULL; 3652 3653 *confirm_msg = '\n'; 3654 STRCPY(confirm_msg + 1, message); 3655 3656 msgp = confirm_msg + 1 + STRLEN(message); 3657 hotkp = hotk; 3658 3659 /* Define first default hotkey. Keep the hotkey string NUL 3660 * terminated to avoid reading past the end. */ 3661 hotkp[copy_char(buttons, hotkp, TRUE)] = NUL; 3662 3663 /* Remember where the choices start, displaying starts here when 3664 * "hotkp" typed at the more prompt. */ 3665 confirm_msg_tail = msgp; 3666 *msgp++ = '\n'; 3667 } 3668 } 3669 3670 display_confirm_msg(); 3671 return hotk; 3672 } 3673 3674 /* 3675 * Display the ":confirm" message. Also called when screen resized. 3676 */ 3677 void 3678 display_confirm_msg() 3679 { 3680 /* avoid that 'q' at the more prompt truncates the message here */ 3681 ++confirm_msg_used; 3682 if (confirm_msg != NULL) 3683 msg_puts_attr(confirm_msg, hl_attr(HLF_M)); 3684 --confirm_msg_used; 3685 } 3686 3687 #endif /* FEAT_CON_DIALOG */ 3688 3689 #if defined(FEAT_CON_DIALOG) || defined(FEAT_GUI_DIALOG) 3690 3691 int 3692 vim_dialog_yesno(type, title, message, dflt) 3693 int type; 3694 char_u *title; 3695 char_u *message; 3696 int dflt; 3697 { 3698 if (do_dialog(type, 3699 title == NULL ? (char_u *)_("Question") : title, 3700 message, 3701 (char_u *)_("&Yes\n&No"), dflt, NULL, FALSE) == 1) 3702 return VIM_YES; 3703 return VIM_NO; 3704 } 3705 3706 int 3707 vim_dialog_yesnocancel(type, title, message, dflt) 3708 int type; 3709 char_u *title; 3710 char_u *message; 3711 int dflt; 3712 { 3713 switch (do_dialog(type, 3714 title == NULL ? (char_u *)_("Question") : title, 3715 message, 3716 (char_u *)_("&Yes\n&No\n&Cancel"), dflt, NULL, FALSE)) 3717 { 3718 case 1: return VIM_YES; 3719 case 2: return VIM_NO; 3720 } 3721 return VIM_CANCEL; 3722 } 3723 3724 int 3725 vim_dialog_yesnoallcancel(type, title, message, dflt) 3726 int type; 3727 char_u *title; 3728 char_u *message; 3729 int dflt; 3730 { 3731 switch (do_dialog(type, 3732 title == NULL ? (char_u *)"Question" : title, 3733 message, 3734 (char_u *)_("&Yes\n&No\nSave &All\n&Discard All\n&Cancel"), 3735 dflt, NULL, FALSE)) 3736 { 3737 case 1: return VIM_YES; 3738 case 2: return VIM_NO; 3739 case 3: return VIM_ALL; 3740 case 4: return VIM_DISCARDALL; 3741 } 3742 return VIM_CANCEL; 3743 } 3744 3745 #endif /* FEAT_GUI_DIALOG || FEAT_CON_DIALOG */ 3746 3747 #if defined(FEAT_BROWSE) || defined(PROTO) 3748 /* 3749 * Generic browse function. Calls gui_mch_browse() when possible. 3750 * Later this may pop-up a non-GUI file selector (external command?). 3751 */ 3752 char_u * 3753 do_browse(flags, title, dflt, ext, initdir, filter, buf) 3754 int flags; /* BROWSE_SAVE and BROWSE_DIR */ 3755 char_u *title; /* title for the window */ 3756 char_u *dflt; /* default file name (may include directory) */ 3757 char_u *ext; /* extension added */ 3758 char_u *initdir; /* initial directory, NULL for current dir or 3759 when using path from "dflt" */ 3760 char_u *filter; /* file name filter */ 3761 buf_T *buf; /* buffer to read/write for */ 3762 { 3763 char_u *fname; 3764 static char_u *last_dir = NULL; /* last used directory */ 3765 char_u *tofree = NULL; 3766 int save_browse = cmdmod.browse; 3767 3768 /* Must turn off browse to avoid that autocommands will get the 3769 * flag too! */ 3770 cmdmod.browse = FALSE; 3771 3772 if (title == NULL || *title == NUL) 3773 { 3774 if (flags & BROWSE_DIR) 3775 title = (char_u *)_("Select Directory dialog"); 3776 else if (flags & BROWSE_SAVE) 3777 title = (char_u *)_("Save File dialog"); 3778 else 3779 title = (char_u *)_("Open File dialog"); 3780 } 3781 3782 /* When no directory specified, use default file name, default dir, buffer 3783 * dir, last dir or current dir */ 3784 if ((initdir == NULL || *initdir == NUL) && dflt != NULL && *dflt != NUL) 3785 { 3786 if (mch_isdir(dflt)) /* default file name is a directory */ 3787 { 3788 initdir = dflt; 3789 dflt = NULL; 3790 } 3791 else if (gettail(dflt) != dflt) /* default file name includes a path */ 3792 { 3793 tofree = vim_strsave(dflt); 3794 if (tofree != NULL) 3795 { 3796 initdir = tofree; 3797 *gettail(initdir) = NUL; 3798 dflt = gettail(dflt); 3799 } 3800 } 3801 } 3802 3803 if (initdir == NULL || *initdir == NUL) 3804 { 3805 /* When 'browsedir' is a directory, use it */ 3806 if (STRCMP(p_bsdir, "last") != 0 3807 && STRCMP(p_bsdir, "buffer") != 0 3808 && STRCMP(p_bsdir, "current") != 0 3809 && mch_isdir(p_bsdir)) 3810 initdir = p_bsdir; 3811 /* When saving or 'browsedir' is "buffer", use buffer fname */ 3812 else if (((flags & BROWSE_SAVE) || *p_bsdir == 'b') 3813 && buf != NULL && buf->b_ffname != NULL) 3814 { 3815 if (dflt == NULL || *dflt == NUL) 3816 dflt = gettail(curbuf->b_ffname); 3817 tofree = vim_strsave(curbuf->b_ffname); 3818 if (tofree != NULL) 3819 { 3820 initdir = tofree; 3821 *gettail(initdir) = NUL; 3822 } 3823 } 3824 /* When 'browsedir' is "last", use dir from last browse */ 3825 else if (*p_bsdir == 'l') 3826 initdir = last_dir; 3827 /* When 'browsedir is "current", use current directory. This is the 3828 * default already, leave initdir empty. */ 3829 } 3830 3831 # ifdef FEAT_GUI 3832 if (gui.in_use) /* when this changes, also adjust f_has()! */ 3833 { 3834 if (filter == NULL 3835 # ifdef FEAT_EVAL 3836 && (filter = get_var_value((char_u *)"b:browsefilter")) == NULL 3837 && (filter = get_var_value((char_u *)"g:browsefilter")) == NULL 3838 # endif 3839 ) 3840 filter = BROWSE_FILTER_DEFAULT; 3841 if (flags & BROWSE_DIR) 3842 { 3843 # if defined(FEAT_GUI_GTK) || defined(WIN3264) 3844 /* For systems that have a directory dialog. */ 3845 fname = gui_mch_browsedir(title, initdir); 3846 # else 3847 /* Generic solution for selecting a directory: select a file and 3848 * remove the file name. */ 3849 fname = gui_mch_browse(0, title, dflt, ext, initdir, (char_u *)""); 3850 # endif 3851 # if !defined(FEAT_GUI_GTK) 3852 /* Win32 adds a dummy file name, others return an arbitrary file 3853 * name. GTK+ 2 returns only the directory, */ 3854 if (fname != NULL && *fname != NUL && !mch_isdir(fname)) 3855 { 3856 /* Remove the file name. */ 3857 char_u *tail = gettail_sep(fname); 3858 3859 if (tail == fname) 3860 *tail++ = '.'; /* use current dir */ 3861 *tail = NUL; 3862 } 3863 # endif 3864 } 3865 else 3866 fname = gui_mch_browse(flags & BROWSE_SAVE, 3867 title, dflt, ext, initdir, filter); 3868 3869 /* We hang around in the dialog for a while, the user might do some 3870 * things to our files. The Win32 dialog allows deleting or renaming 3871 * a file, check timestamps. */ 3872 need_check_timestamps = TRUE; 3873 did_check_timestamps = FALSE; 3874 } 3875 else 3876 # endif 3877 { 3878 /* TODO: non-GUI file selector here */ 3879 EMSG(_("E338: Sorry, no file browser in console mode")); 3880 fname = NULL; 3881 } 3882 3883 /* keep the directory for next time */ 3884 if (fname != NULL) 3885 { 3886 vim_free(last_dir); 3887 last_dir = vim_strsave(fname); 3888 if (last_dir != NULL && !(flags & BROWSE_DIR)) 3889 { 3890 *gettail(last_dir) = NUL; 3891 if (*last_dir == NUL) 3892 { 3893 /* filename only returned, must be in current dir */ 3894 vim_free(last_dir); 3895 last_dir = alloc(MAXPATHL); 3896 if (last_dir != NULL) 3897 mch_dirname(last_dir, MAXPATHL); 3898 } 3899 } 3900 } 3901 3902 vim_free(tofree); 3903 cmdmod.browse = save_browse; 3904 3905 return fname; 3906 } 3907 #endif 3908 3909 #if defined(HAVE_STDARG_H) && defined(FEAT_EVAL) 3910 static char *e_printf = N_("E766: Insufficient arguments for printf()"); 3911 3912 static long tv_nr __ARGS((typval_T *tvs, int *idxp)); 3913 static char *tv_str __ARGS((typval_T *tvs, int *idxp)); 3914 # ifdef FEAT_FLOAT 3915 static double tv_float __ARGS((typval_T *tvs, int *idxp)); 3916 # endif 3917 3918 /* 3919 * Get number argument from "idxp" entry in "tvs". First entry is 1. 3920 */ 3921 static long 3922 tv_nr(tvs, idxp) 3923 typval_T *tvs; 3924 int *idxp; 3925 { 3926 int idx = *idxp - 1; 3927 long n = 0; 3928 int err = FALSE; 3929 3930 if (tvs[idx].v_type == VAR_UNKNOWN) 3931 EMSG(_(e_printf)); 3932 else 3933 { 3934 ++*idxp; 3935 n = get_tv_number_chk(&tvs[idx], &err); 3936 if (err) 3937 n = 0; 3938 } 3939 return n; 3940 } 3941 3942 /* 3943 * Get string argument from "idxp" entry in "tvs". First entry is 1. 3944 * Returns NULL for an error. 3945 */ 3946 static char * 3947 tv_str(tvs, idxp) 3948 typval_T *tvs; 3949 int *idxp; 3950 { 3951 int idx = *idxp - 1; 3952 char *s = NULL; 3953 3954 if (tvs[idx].v_type == VAR_UNKNOWN) 3955 EMSG(_(e_printf)); 3956 else 3957 { 3958 ++*idxp; 3959 s = (char *)get_tv_string_chk(&tvs[idx]); 3960 } 3961 return s; 3962 } 3963 3964 # ifdef FEAT_FLOAT 3965 /* 3966 * Get float argument from "idxp" entry in "tvs". First entry is 1. 3967 */ 3968 static double 3969 tv_float(tvs, idxp) 3970 typval_T *tvs; 3971 int *idxp; 3972 { 3973 int idx = *idxp - 1; 3974 double f = 0; 3975 3976 if (tvs[idx].v_type == VAR_UNKNOWN) 3977 EMSG(_(e_printf)); 3978 else 3979 { 3980 ++*idxp; 3981 if (tvs[idx].v_type == VAR_FLOAT) 3982 f = tvs[idx].vval.v_float; 3983 else if (tvs[idx].v_type == VAR_NUMBER) 3984 f = tvs[idx].vval.v_number; 3985 else 3986 EMSG(_("E807: Expected Float argument for printf()")); 3987 } 3988 return f; 3989 } 3990 # endif 3991 #endif 3992 3993 /* 3994 * This code was included to provide a portable vsnprintf() and snprintf(). 3995 * Some systems may provide their own, but we always use this one for 3996 * consistency. 3997 * 3998 * This code is based on snprintf.c - a portable implementation of snprintf 3999 * by Mark Martinec <[email protected]>, Version 2.2, 2000-10-06. 4000 * Included with permission. It was heavily modified to fit in Vim. 4001 * The original code, including useful comments, can be found here: 4002 * http://www.ijs.si/software/snprintf/ 4003 * 4004 * This snprintf() only supports the following conversion specifiers: 4005 * s, c, d, u, o, x, X, p (and synonyms: i, D, U, O - see below) 4006 * with flags: '-', '+', ' ', '0' and '#'. 4007 * An asterisk is supported for field width as well as precision. 4008 * 4009 * Limited support for floating point was added: 'f', 'e', 'E', 'g', 'G'. 4010 * 4011 * Length modifiers 'h' (short int) and 'l' (long int) are supported. 4012 * 'll' (long long int) is not supported. 4013 * 4014 * The locale is not used, the string is used as a byte string. This is only 4015 * relevant for double-byte encodings where the second byte may be '%'. 4016 * 4017 * It is permitted for "str_m" to be zero, and it is permitted to specify NULL 4018 * pointer for resulting string argument if "str_m" is zero (as per ISO C99). 4019 * 4020 * The return value is the number of characters which would be generated 4021 * for the given input, excluding the trailing null. If this value 4022 * is greater or equal to "str_m", not all characters from the result 4023 * have been stored in str, output bytes beyond the ("str_m"-1) -th character 4024 * are discarded. If "str_m" is greater than zero it is guaranteed 4025 * the resulting string will be null-terminated. 4026 */ 4027 4028 /* 4029 * When va_list is not supported we only define vim_snprintf(). 4030 * 4031 * vim_vsnprintf() can be invoked with either "va_list" or a list of 4032 * "typval_T". When the latter is not used it must be NULL. 4033 */ 4034 4035 /* When generating prototypes all of this is skipped, cproto doesn't 4036 * understand this. */ 4037 #ifndef PROTO 4038 4039 # ifdef HAVE_STDARG_H 4040 /* Like vim_vsnprintf() but append to the string. */ 4041 int 4042 vim_snprintf_add(char *str, size_t str_m, char *fmt, ...) 4043 { 4044 va_list ap; 4045 int str_l; 4046 size_t len = STRLEN(str); 4047 size_t space; 4048 4049 if (str_m <= len) 4050 space = 0; 4051 else 4052 space = str_m - len; 4053 va_start(ap, fmt); 4054 str_l = vim_vsnprintf(str + len, space, fmt, ap, NULL); 4055 va_end(ap); 4056 return str_l; 4057 } 4058 # else 4059 /* Like vim_vsnprintf() but append to the string. */ 4060 int 4061 vim_snprintf_add(str, str_m, fmt, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) 4062 char *str; 4063 size_t str_m; 4064 char *fmt; 4065 long a1, a2, a3, a4, a5, a6, a7, a8, a9, a10; 4066 { 4067 size_t len = STRLEN(str); 4068 size_t space; 4069 4070 if (str_m <= len) 4071 space = 0; 4072 else 4073 space = str_m - len; 4074 return vim_vsnprintf(str + len, space, fmt, 4075 a1, a2, a3, a4, a5, a6, a7, a8, a9, a10); 4076 } 4077 # endif 4078 4079 # ifdef HAVE_STDARG_H 4080 int 4081 vim_snprintf(char *str, size_t str_m, char *fmt, ...) 4082 { 4083 va_list ap; 4084 int str_l; 4085 4086 va_start(ap, fmt); 4087 str_l = vim_vsnprintf(str, str_m, fmt, ap, NULL); 4088 va_end(ap); 4089 return str_l; 4090 } 4091 4092 int 4093 vim_vsnprintf(str, str_m, fmt, ap, tvs) 4094 # else 4095 /* clumsy way to work around missing va_list */ 4096 # 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) 4097 4098 /* VARARGS */ 4099 int 4100 #ifdef __BORLANDC__ 4101 _RTLENTRYF 4102 #endif 4103 vim_snprintf(str, str_m, fmt, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) 4104 # endif 4105 char *str; 4106 size_t str_m; 4107 char *fmt; 4108 # ifdef HAVE_STDARG_H 4109 va_list ap; 4110 typval_T *tvs; 4111 # else 4112 long a1, a2, a3, a4, a5, a6, a7, a8, a9, a10; 4113 # endif 4114 { 4115 size_t str_l = 0; 4116 char *p = fmt; 4117 int arg_idx = 1; 4118 4119 if (p == NULL) 4120 p = ""; 4121 while (*p != NUL) 4122 { 4123 if (*p != '%') 4124 { 4125 char *q = strchr(p + 1, '%'); 4126 size_t n = (q == NULL) ? STRLEN(p) : (size_t)(q - p); 4127 4128 /* Copy up to the next '%' or NUL without any changes. */ 4129 if (str_l < str_m) 4130 { 4131 size_t avail = str_m - str_l; 4132 4133 mch_memmove(str + str_l, p, n > avail ? avail : n); 4134 } 4135 p += n; 4136 str_l += n; 4137 } 4138 else 4139 { 4140 size_t min_field_width = 0, precision = 0; 4141 int zero_padding = 0, precision_specified = 0, justify_left = 0; 4142 int alternate_form = 0, force_sign = 0; 4143 4144 /* If both the ' ' and '+' flags appear, the ' ' flag should be 4145 * ignored. */ 4146 int space_for_positive = 1; 4147 4148 /* allowed values: \0, h, l, L */ 4149 char length_modifier = '\0'; 4150 4151 /* temporary buffer for simple numeric->string conversion */ 4152 #ifdef FEAT_FLOAT 4153 # define TMP_LEN 350 /* On my system 1e308 is the biggest number possible. 4154 * That sounds reasonable to use as the maximum 4155 * printable. */ 4156 #else 4157 # define TMP_LEN 32 4158 #endif 4159 char tmp[TMP_LEN]; 4160 4161 /* string address in case of string argument */ 4162 char *str_arg; 4163 4164 /* natural field width of arg without padding and sign */ 4165 size_t str_arg_l; 4166 4167 /* unsigned char argument value - only defined for c conversion. 4168 * N.B. standard explicitly states the char argument for the c 4169 * conversion is unsigned */ 4170 unsigned char uchar_arg; 4171 4172 /* number of zeros to be inserted for numeric conversions as 4173 * required by the precision or minimal field width */ 4174 size_t number_of_zeros_to_pad = 0; 4175 4176 /* index into tmp where zero padding is to be inserted */ 4177 size_t zero_padding_insertion_ind = 0; 4178 4179 /* current conversion specifier character */ 4180 char fmt_spec = '\0'; 4181 4182 str_arg = NULL; 4183 p++; /* skip '%' */ 4184 4185 /* parse flags */ 4186 while (*p == '0' || *p == '-' || *p == '+' || *p == ' ' 4187 || *p == '#' || *p == '\'') 4188 { 4189 switch (*p) 4190 { 4191 case '0': zero_padding = 1; break; 4192 case '-': justify_left = 1; break; 4193 case '+': force_sign = 1; space_for_positive = 0; break; 4194 case ' ': force_sign = 1; 4195 /* If both the ' ' and '+' flags appear, the ' ' 4196 * flag should be ignored */ 4197 break; 4198 case '#': alternate_form = 1; break; 4199 case '\'': break; 4200 } 4201 p++; 4202 } 4203 /* If the '0' and '-' flags both appear, the '0' flag should be 4204 * ignored. */ 4205 4206 /* parse field width */ 4207 if (*p == '*') 4208 { 4209 int j; 4210 4211 p++; 4212 j = 4213 #ifndef HAVE_STDARG_H 4214 get_a_arg(arg_idx); 4215 #else 4216 # if defined(FEAT_EVAL) 4217 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4218 # endif 4219 va_arg(ap, int); 4220 #endif 4221 if (j >= 0) 4222 min_field_width = j; 4223 else 4224 { 4225 min_field_width = -j; 4226 justify_left = 1; 4227 } 4228 } 4229 else if (VIM_ISDIGIT((int)(*p))) 4230 { 4231 /* size_t could be wider than unsigned int; make sure we treat 4232 * argument like common implementations do */ 4233 unsigned int uj = *p++ - '0'; 4234 4235 while (VIM_ISDIGIT((int)(*p))) 4236 uj = 10 * uj + (unsigned int)(*p++ - '0'); 4237 min_field_width = uj; 4238 } 4239 4240 /* parse precision */ 4241 if (*p == '.') 4242 { 4243 p++; 4244 precision_specified = 1; 4245 if (*p == '*') 4246 { 4247 int j; 4248 4249 j = 4250 #ifndef HAVE_STDARG_H 4251 get_a_arg(arg_idx); 4252 #else 4253 # if defined(FEAT_EVAL) 4254 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4255 # endif 4256 va_arg(ap, int); 4257 #endif 4258 p++; 4259 if (j >= 0) 4260 precision = j; 4261 else 4262 { 4263 precision_specified = 0; 4264 precision = 0; 4265 } 4266 } 4267 else if (VIM_ISDIGIT((int)(*p))) 4268 { 4269 /* size_t could be wider than unsigned int; make sure we 4270 * treat argument like common implementations do */ 4271 unsigned int uj = *p++ - '0'; 4272 4273 while (VIM_ISDIGIT((int)(*p))) 4274 uj = 10 * uj + (unsigned int)(*p++ - '0'); 4275 precision = uj; 4276 } 4277 } 4278 4279 /* parse 'h', 'l' and 'll' length modifiers */ 4280 if (*p == 'h' || *p == 'l') 4281 { 4282 length_modifier = *p; 4283 p++; 4284 if (length_modifier == 'l' && *p == 'l') 4285 { 4286 /* double l = long long */ 4287 length_modifier = 'l'; /* treat it as a single 'l' */ 4288 p++; 4289 } 4290 } 4291 fmt_spec = *p; 4292 4293 /* common synonyms: */ 4294 switch (fmt_spec) 4295 { 4296 case 'i': fmt_spec = 'd'; break; 4297 case 'D': fmt_spec = 'd'; length_modifier = 'l'; break; 4298 case 'U': fmt_spec = 'u'; length_modifier = 'l'; break; 4299 case 'O': fmt_spec = 'o'; length_modifier = 'l'; break; 4300 case 'F': fmt_spec = 'f'; break; 4301 default: break; 4302 } 4303 4304 /* get parameter value, do initial processing */ 4305 switch (fmt_spec) 4306 { 4307 /* '%' and 'c' behave similar to 's' regarding flags and field 4308 * widths */ 4309 case '%': 4310 case 'c': 4311 case 's': 4312 case 'S': 4313 length_modifier = '\0'; 4314 str_arg_l = 1; 4315 switch (fmt_spec) 4316 { 4317 case '%': 4318 str_arg = p; 4319 break; 4320 4321 case 'c': 4322 { 4323 int j; 4324 4325 j = 4326 #ifndef HAVE_STDARG_H 4327 get_a_arg(arg_idx); 4328 #else 4329 # if defined(FEAT_EVAL) 4330 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4331 # endif 4332 va_arg(ap, int); 4333 #endif 4334 /* standard demands unsigned char */ 4335 uchar_arg = (unsigned char)j; 4336 str_arg = (char *)&uchar_arg; 4337 break; 4338 } 4339 4340 case 's': 4341 case 'S': 4342 str_arg = 4343 #ifndef HAVE_STDARG_H 4344 (char *)get_a_arg(arg_idx); 4345 #else 4346 # if defined(FEAT_EVAL) 4347 tvs != NULL ? tv_str(tvs, &arg_idx) : 4348 # endif 4349 va_arg(ap, char *); 4350 #endif 4351 if (str_arg == NULL) 4352 { 4353 str_arg = "[NULL]"; 4354 str_arg_l = 6; 4355 } 4356 /* make sure not to address string beyond the specified 4357 * precision !!! */ 4358 else if (!precision_specified) 4359 str_arg_l = strlen(str_arg); 4360 /* truncate string if necessary as requested by precision */ 4361 else if (precision == 0) 4362 str_arg_l = 0; 4363 else 4364 { 4365 /* Don't put the #if inside memchr(), it can be a 4366 * macro. */ 4367 #if SIZEOF_INT <= 2 4368 char *q = memchr(str_arg, '\0', precision); 4369 #else 4370 /* memchr on HP does not like n > 2^31 !!! */ 4371 char *q = memchr(str_arg, '\0', 4372 precision <= (size_t)0x7fffffffL ? precision 4373 : (size_t)0x7fffffffL); 4374 #endif 4375 str_arg_l = (q == NULL) ? precision 4376 : (size_t)(q - str_arg); 4377 } 4378 #ifdef FEAT_MBYTE 4379 if (fmt_spec == 'S') 4380 { 4381 if (min_field_width != 0) 4382 min_field_width += STRLEN(str_arg) 4383 - mb_string2cells((char_u *)str_arg, -1); 4384 if (precision) 4385 { 4386 char_u *p1 = (char_u *)str_arg; 4387 size_t i; 4388 4389 for (i = 0; i < precision && *p1; i++) 4390 p1 += mb_ptr2len(p1); 4391 4392 str_arg_l = precision = p1 - (char_u *)str_arg; 4393 } 4394 } 4395 #endif 4396 break; 4397 4398 default: 4399 break; 4400 } 4401 break; 4402 4403 case 'd': case 'u': case 'o': case 'x': case 'X': case 'p': 4404 { 4405 /* NOTE: the u, o, x, X and p conversion specifiers 4406 * imply the value is unsigned; d implies a signed 4407 * value */ 4408 4409 /* 0 if numeric argument is zero (or if pointer is 4410 * NULL for 'p'), +1 if greater than zero (or nonzero 4411 * for unsigned arguments), -1 if negative (unsigned 4412 * argument is never negative) */ 4413 int arg_sign = 0; 4414 4415 /* only defined for length modifier h, or for no 4416 * length modifiers */ 4417 int int_arg = 0; 4418 unsigned int uint_arg = 0; 4419 4420 /* only defined for length modifier l */ 4421 long int long_arg = 0; 4422 unsigned long int ulong_arg = 0; 4423 4424 /* pointer argument value -only defined for p 4425 * conversion */ 4426 void *ptr_arg = NULL; 4427 4428 if (fmt_spec == 'p') 4429 { 4430 length_modifier = '\0'; 4431 ptr_arg = 4432 #ifndef HAVE_STDARG_H 4433 (void *)get_a_arg(arg_idx); 4434 #else 4435 # if defined(FEAT_EVAL) 4436 tvs != NULL ? (void *)tv_str(tvs, &arg_idx) : 4437 # endif 4438 va_arg(ap, void *); 4439 #endif 4440 if (ptr_arg != NULL) 4441 arg_sign = 1; 4442 } 4443 else if (fmt_spec == 'd') 4444 { 4445 /* signed */ 4446 switch (length_modifier) 4447 { 4448 case '\0': 4449 case 'h': 4450 /* char and short arguments are passed as int. */ 4451 int_arg = 4452 #ifndef HAVE_STDARG_H 4453 get_a_arg(arg_idx); 4454 #else 4455 # if defined(FEAT_EVAL) 4456 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4457 # endif 4458 va_arg(ap, int); 4459 #endif 4460 if (int_arg > 0) 4461 arg_sign = 1; 4462 else if (int_arg < 0) 4463 arg_sign = -1; 4464 break; 4465 case 'l': 4466 long_arg = 4467 #ifndef HAVE_STDARG_H 4468 get_a_arg(arg_idx); 4469 #else 4470 # if defined(FEAT_EVAL) 4471 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4472 # endif 4473 va_arg(ap, long int); 4474 #endif 4475 if (long_arg > 0) 4476 arg_sign = 1; 4477 else if (long_arg < 0) 4478 arg_sign = -1; 4479 break; 4480 } 4481 } 4482 else 4483 { 4484 /* unsigned */ 4485 switch (length_modifier) 4486 { 4487 case '\0': 4488 case 'h': 4489 uint_arg = 4490 #ifndef HAVE_STDARG_H 4491 get_a_arg(arg_idx); 4492 #else 4493 # if defined(FEAT_EVAL) 4494 tvs != NULL ? (unsigned) 4495 tv_nr(tvs, &arg_idx) : 4496 # endif 4497 va_arg(ap, unsigned int); 4498 #endif 4499 if (uint_arg != 0) 4500 arg_sign = 1; 4501 break; 4502 case 'l': 4503 ulong_arg = 4504 #ifndef HAVE_STDARG_H 4505 get_a_arg(arg_idx); 4506 #else 4507 # if defined(FEAT_EVAL) 4508 tvs != NULL ? (unsigned long) 4509 tv_nr(tvs, &arg_idx) : 4510 # endif 4511 va_arg(ap, unsigned long int); 4512 #endif 4513 if (ulong_arg != 0) 4514 arg_sign = 1; 4515 break; 4516 } 4517 } 4518 4519 str_arg = tmp; 4520 str_arg_l = 0; 4521 4522 /* NOTE: 4523 * For d, i, u, o, x, and X conversions, if precision is 4524 * specified, the '0' flag should be ignored. This is so 4525 * with Solaris 2.6, Digital UNIX 4.0, HPUX 10, Linux, 4526 * FreeBSD, NetBSD; but not with Perl. 4527 */ 4528 if (precision_specified) 4529 zero_padding = 0; 4530 if (fmt_spec == 'd') 4531 { 4532 if (force_sign && arg_sign >= 0) 4533 tmp[str_arg_l++] = space_for_positive ? ' ' : '+'; 4534 /* leave negative numbers for sprintf to handle, to 4535 * avoid handling tricky cases like (short int)-32768 */ 4536 } 4537 else if (alternate_form) 4538 { 4539 if (arg_sign != 0 4540 && (fmt_spec == 'x' || fmt_spec == 'X') ) 4541 { 4542 tmp[str_arg_l++] = '0'; 4543 tmp[str_arg_l++] = fmt_spec; 4544 } 4545 /* alternate form should have no effect for p 4546 * conversion, but ... */ 4547 } 4548 4549 zero_padding_insertion_ind = str_arg_l; 4550 if (!precision_specified) 4551 precision = 1; /* default precision is 1 */ 4552 if (precision == 0 && arg_sign == 0) 4553 { 4554 /* When zero value is formatted with an explicit 4555 * precision 0, the resulting formatted string is 4556 * empty (d, i, u, o, x, X, p). */ 4557 } 4558 else 4559 { 4560 char f[5]; 4561 int f_l = 0; 4562 4563 /* construct a simple format string for sprintf */ 4564 f[f_l++] = '%'; 4565 if (!length_modifier) 4566 ; 4567 else if (length_modifier == '2') 4568 { 4569 f[f_l++] = 'l'; 4570 f[f_l++] = 'l'; 4571 } 4572 else 4573 f[f_l++] = length_modifier; 4574 f[f_l++] = fmt_spec; 4575 f[f_l++] = '\0'; 4576 4577 if (fmt_spec == 'p') 4578 str_arg_l += sprintf(tmp + str_arg_l, f, ptr_arg); 4579 else if (fmt_spec == 'd') 4580 { 4581 /* signed */ 4582 switch (length_modifier) 4583 { 4584 case '\0': 4585 case 'h': str_arg_l += sprintf( 4586 tmp + str_arg_l, f, int_arg); 4587 break; 4588 case 'l': str_arg_l += sprintf( 4589 tmp + str_arg_l, f, long_arg); 4590 break; 4591 } 4592 } 4593 else 4594 { 4595 /* unsigned */ 4596 switch (length_modifier) 4597 { 4598 case '\0': 4599 case 'h': str_arg_l += sprintf( 4600 tmp + str_arg_l, f, uint_arg); 4601 break; 4602 case 'l': str_arg_l += sprintf( 4603 tmp + str_arg_l, f, ulong_arg); 4604 break; 4605 } 4606 } 4607 4608 /* include the optional minus sign and possible 4609 * "0x" in the region before the zero padding 4610 * insertion point */ 4611 if (zero_padding_insertion_ind < str_arg_l 4612 && tmp[zero_padding_insertion_ind] == '-') 4613 zero_padding_insertion_ind++; 4614 if (zero_padding_insertion_ind + 1 < str_arg_l 4615 && tmp[zero_padding_insertion_ind] == '0' 4616 && (tmp[zero_padding_insertion_ind + 1] == 'x' 4617 || tmp[zero_padding_insertion_ind + 1] == 'X')) 4618 zero_padding_insertion_ind += 2; 4619 } 4620 4621 { 4622 size_t num_of_digits = str_arg_l 4623 - zero_padding_insertion_ind; 4624 4625 if (alternate_form && fmt_spec == 'o' 4626 /* unless zero is already the first 4627 * character */ 4628 && !(zero_padding_insertion_ind < str_arg_l 4629 && tmp[zero_padding_insertion_ind] == '0')) 4630 { 4631 /* assure leading zero for alternate-form 4632 * octal numbers */ 4633 if (!precision_specified 4634 || precision < num_of_digits + 1) 4635 { 4636 /* precision is increased to force the 4637 * first character to be zero, except if a 4638 * zero value is formatted with an 4639 * explicit precision of zero */ 4640 precision = num_of_digits + 1; 4641 precision_specified = 1; 4642 } 4643 } 4644 /* zero padding to specified precision? */ 4645 if (num_of_digits < precision) 4646 number_of_zeros_to_pad = precision - num_of_digits; 4647 } 4648 /* zero padding to specified minimal field width? */ 4649 if (!justify_left && zero_padding) 4650 { 4651 int n = (int)(min_field_width - (str_arg_l 4652 + number_of_zeros_to_pad)); 4653 if (n > 0) 4654 number_of_zeros_to_pad += n; 4655 } 4656 break; 4657 } 4658 4659 #ifdef FEAT_FLOAT 4660 case 'f': 4661 case 'e': 4662 case 'E': 4663 case 'g': 4664 case 'G': 4665 { 4666 /* Floating point. */ 4667 double f; 4668 double abs_f; 4669 char format[40]; 4670 int l; 4671 int remove_trailing_zeroes = FALSE; 4672 4673 f = 4674 # ifndef HAVE_STDARG_H 4675 get_a_arg(arg_idx); 4676 # else 4677 # if defined(FEAT_EVAL) 4678 tvs != NULL ? tv_float(tvs, &arg_idx) : 4679 # endif 4680 va_arg(ap, double); 4681 # endif 4682 abs_f = f < 0 ? -f : f; 4683 4684 if (fmt_spec == 'g' || fmt_spec == 'G') 4685 { 4686 /* Would be nice to use %g directly, but it prints 4687 * "1.0" as "1", we don't want that. */ 4688 if ((abs_f >= 0.001 && abs_f < 10000000.0) 4689 || abs_f == 0.0) 4690 fmt_spec = 'f'; 4691 else 4692 fmt_spec = fmt_spec == 'g' ? 'e' : 'E'; 4693 remove_trailing_zeroes = TRUE; 4694 } 4695 4696 if (fmt_spec == 'f' && 4697 #ifdef VAX 4698 abs_f > 1.0e38 4699 #else 4700 abs_f > 1.0e307 4701 #endif 4702 ) 4703 { 4704 /* Avoid a buffer overflow */ 4705 strcpy(tmp, "inf"); 4706 str_arg_l = 3; 4707 } 4708 else 4709 { 4710 format[0] = '%'; 4711 l = 1; 4712 if (precision_specified) 4713 { 4714 size_t max_prec = TMP_LEN - 10; 4715 4716 /* Make sure we don't get more digits than we 4717 * have room for. */ 4718 if (fmt_spec == 'f' && abs_f > 1.0) 4719 max_prec -= (size_t)log10(abs_f); 4720 if (precision > max_prec) 4721 precision = max_prec; 4722 l += sprintf(format + 1, ".%d", (int)precision); 4723 } 4724 format[l] = fmt_spec; 4725 format[l + 1] = NUL; 4726 str_arg_l = sprintf(tmp, format, f); 4727 4728 if (remove_trailing_zeroes) 4729 { 4730 int i; 4731 char *tp; 4732 4733 /* Using %g or %G: remove superfluous zeroes. */ 4734 if (fmt_spec == 'f') 4735 tp = tmp + str_arg_l - 1; 4736 else 4737 { 4738 tp = (char *)vim_strchr((char_u *)tmp, 4739 fmt_spec == 'e' ? 'e' : 'E'); 4740 if (tp != NULL) 4741 { 4742 /* Remove superfluous '+' and leading 4743 * zeroes from the exponent. */ 4744 if (tp[1] == '+') 4745 { 4746 /* Change "1.0e+07" to "1.0e07" */ 4747 STRMOVE(tp + 1, tp + 2); 4748 --str_arg_l; 4749 } 4750 i = (tp[1] == '-') ? 2 : 1; 4751 while (tp[i] == '0') 4752 { 4753 /* Change "1.0e07" to "1.0e7" */ 4754 STRMOVE(tp + i, tp + i + 1); 4755 --str_arg_l; 4756 } 4757 --tp; 4758 } 4759 } 4760 4761 if (tp != NULL && !precision_specified) 4762 /* Remove trailing zeroes, but keep the one 4763 * just after a dot. */ 4764 while (tp > tmp + 2 && *tp == '0' 4765 && tp[-1] != '.') 4766 { 4767 STRMOVE(tp, tp + 1); 4768 --tp; 4769 --str_arg_l; 4770 } 4771 } 4772 else 4773 { 4774 char *tp; 4775 4776 /* Be consistent: some printf("%e") use 1.0e+12 4777 * and some 1.0e+012. Remove one zero in the last 4778 * case. */ 4779 tp = (char *)vim_strchr((char_u *)tmp, 4780 fmt_spec == 'e' ? 'e' : 'E'); 4781 if (tp != NULL && (tp[1] == '+' || tp[1] == '-') 4782 && tp[2] == '0' 4783 && vim_isdigit(tp[3]) 4784 && vim_isdigit(tp[4])) 4785 { 4786 STRMOVE(tp + 2, tp + 3); 4787 --str_arg_l; 4788 } 4789 } 4790 } 4791 str_arg = tmp; 4792 break; 4793 } 4794 #endif 4795 4796 default: 4797 /* unrecognized conversion specifier, keep format string 4798 * as-is */ 4799 zero_padding = 0; /* turn zero padding off for non-numeric 4800 conversion */ 4801 justify_left = 1; 4802 min_field_width = 0; /* reset flags */ 4803 4804 /* discard the unrecognized conversion, just keep * 4805 * the unrecognized conversion character */ 4806 str_arg = p; 4807 str_arg_l = 0; 4808 if (*p != NUL) 4809 str_arg_l++; /* include invalid conversion specifier 4810 unchanged if not at end-of-string */ 4811 break; 4812 } 4813 4814 if (*p != NUL) 4815 p++; /* step over the just processed conversion specifier */ 4816 4817 /* insert padding to the left as requested by min_field_width; 4818 * this does not include the zero padding in case of numerical 4819 * conversions*/ 4820 if (!justify_left) 4821 { 4822 /* left padding with blank or zero */ 4823 int pn = (int)(min_field_width - (str_arg_l + number_of_zeros_to_pad)); 4824 4825 if (pn > 0) 4826 { 4827 if (str_l < str_m) 4828 { 4829 size_t avail = str_m - str_l; 4830 4831 vim_memset(str + str_l, zero_padding ? '0' : ' ', 4832 (size_t)pn > avail ? avail 4833 : (size_t)pn); 4834 } 4835 str_l += pn; 4836 } 4837 } 4838 4839 /* zero padding as requested by the precision or by the minimal 4840 * field width for numeric conversions required? */ 4841 if (number_of_zeros_to_pad == 0) 4842 { 4843 /* will not copy first part of numeric right now, * 4844 * force it to be copied later in its entirety */ 4845 zero_padding_insertion_ind = 0; 4846 } 4847 else 4848 { 4849 /* insert first part of numerics (sign or '0x') before zero 4850 * padding */ 4851 int zn = (int)zero_padding_insertion_ind; 4852 4853 if (zn > 0) 4854 { 4855 if (str_l < str_m) 4856 { 4857 size_t avail = str_m - str_l; 4858 4859 mch_memmove(str + str_l, str_arg, 4860 (size_t)zn > avail ? avail 4861 : (size_t)zn); 4862 } 4863 str_l += zn; 4864 } 4865 4866 /* insert zero padding as requested by the precision or min 4867 * field width */ 4868 zn = (int)number_of_zeros_to_pad; 4869 if (zn > 0) 4870 { 4871 if (str_l < str_m) 4872 { 4873 size_t avail = str_m-str_l; 4874 4875 vim_memset(str + str_l, '0', 4876 (size_t)zn > avail ? avail 4877 : (size_t)zn); 4878 } 4879 str_l += zn; 4880 } 4881 } 4882 4883 /* insert formatted string 4884 * (or as-is conversion specifier for unknown conversions) */ 4885 { 4886 int sn = (int)(str_arg_l - zero_padding_insertion_ind); 4887 4888 if (sn > 0) 4889 { 4890 if (str_l < str_m) 4891 { 4892 size_t avail = str_m - str_l; 4893 4894 mch_memmove(str + str_l, 4895 str_arg + zero_padding_insertion_ind, 4896 (size_t)sn > avail ? avail : (size_t)sn); 4897 } 4898 str_l += sn; 4899 } 4900 } 4901 4902 /* insert right padding */ 4903 if (justify_left) 4904 { 4905 /* right blank padding to the field width */ 4906 int pn = (int)(min_field_width 4907 - (str_arg_l + number_of_zeros_to_pad)); 4908 4909 if (pn > 0) 4910 { 4911 if (str_l < str_m) 4912 { 4913 size_t avail = str_m - str_l; 4914 4915 vim_memset(str + str_l, ' ', 4916 (size_t)pn > avail ? avail 4917 : (size_t)pn); 4918 } 4919 str_l += pn; 4920 } 4921 } 4922 } 4923 } 4924 4925 if (str_m > 0) 4926 { 4927 /* make sure the string is nul-terminated even at the expense of 4928 * overwriting the last character (shouldn't happen, but just in case) 4929 * */ 4930 str[str_l <= str_m - 1 ? str_l : str_m - 1] = '\0'; 4931 } 4932 4933 #ifdef HAVE_STDARG_H 4934 if (tvs != NULL && tvs[arg_idx - 1].v_type != VAR_UNKNOWN) 4935 EMSG(_("E767: Too many arguments to printf()")); 4936 #endif 4937 4938 /* Return the number of characters formatted (excluding trailing nul 4939 * character), that is, the number of characters that would have been 4940 * written to the buffer if it were large enough. */ 4941 return (int)str_l; 4942 } 4943 4944 #endif /* PROTO */ 4945