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(void); 23 static char_u *get_emsg_source(void); 24 static char_u *get_emsg_lnum(void); 25 static void add_msg_hist(char_u *s, int len, int attr); 26 static void hit_return_msg(void); 27 static void msg_home_replace_attr(char_u *fname, int attr); 28 #ifdef FEAT_MBYTE 29 static char_u *screen_puts_mbyte(char_u *s, int l, int attr); 30 #endif 31 static void msg_puts_attr_len(char_u *str, int maxlen, int attr); 32 static void msg_puts_display(char_u *str, int maxlen, int attr, int recurse); 33 static void msg_scroll_up(void); 34 static void inc_msg_scrolled(void); 35 static void store_sb_text(char_u **sb_str, char_u *s, int attr, int *sb_col, int finish); 36 static void t_puts(int *t_col, char_u *t_s, char_u *s, int attr); 37 static void msg_puts_printf(char_u *str, int maxlen); 38 static int do_more_prompt(int typed_char); 39 static void msg_screen_putchar(int c, int attr); 40 static int msg_check_screen(void); 41 static void redir_write(char_u *s, int maxlen); 42 #ifdef FEAT_CON_DIALOG 43 static char_u *msg_show_console_dialog(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(char_u *s) 106 { 107 return msg_attr_keep(s, 0, FALSE); 108 } 109 110 #if defined(FEAT_EVAL) || defined(FEAT_X11) || defined(USE_XSMP) \ 111 || defined(FEAT_GUI_GTK) || defined(PROTO) 112 /* 113 * Like msg() but keep it silent when 'verbosefile' is set. 114 */ 115 int 116 verb_msg(char_u *s) 117 { 118 int n; 119 120 verbose_enter(); 121 n = msg_attr_keep(s, 0, FALSE); 122 verbose_leave(); 123 124 return n; 125 } 126 #endif 127 128 int 129 msg_attr(char_u *s, int attr) 130 { 131 return msg_attr_keep(s, attr, FALSE); 132 } 133 134 int 135 msg_attr_keep( 136 char_u *s, 137 int attr, 138 int keep) /* TRUE: set keep_msg if it doesn't scroll */ 139 { 140 static int entered = 0; 141 int retval; 142 char_u *buf = NULL; 143 144 #ifdef FEAT_EVAL 145 if (attr == 0) 146 set_vim_var_string(VV_STATUSMSG, s, -1); 147 #endif 148 149 /* 150 * It is possible that displaying a messages causes a problem (e.g., 151 * when redrawing the window), which causes another message, etc.. To 152 * break this loop, limit the recursiveness to 3 levels. 153 */ 154 if (entered >= 3) 155 return TRUE; 156 ++entered; 157 158 /* Add message to history (unless it's a repeated kept message or a 159 * truncated message) */ 160 if (s != keep_msg 161 || (*s != '<' 162 && last_msg_hist != NULL 163 && last_msg_hist->msg != NULL 164 && STRCMP(s, last_msg_hist->msg))) 165 add_msg_hist(s, -1, attr); 166 167 /* When displaying keep_msg, don't let msg_start() free it, caller must do 168 * that. */ 169 if (s == keep_msg) 170 keep_msg = NULL; 171 172 /* Truncate the message if needed. */ 173 msg_start(); 174 buf = msg_strtrunc(s, FALSE); 175 if (buf != NULL) 176 s = buf; 177 178 msg_outtrans_attr(s, attr); 179 msg_clr_eos(); 180 retval = msg_end(); 181 182 if (keep && retval && vim_strsize(s) < (int)(Rows - cmdline_row - 1) 183 * Columns + sc_col) 184 set_keep_msg(s, 0); 185 186 vim_free(buf); 187 --entered; 188 return retval; 189 } 190 191 /* 192 * Truncate a string such that it can be printed without causing a scroll. 193 * Returns an allocated string or NULL when no truncating is done. 194 */ 195 char_u * 196 msg_strtrunc( 197 char_u *s, 198 int force) /* always truncate */ 199 { 200 char_u *buf = NULL; 201 int len; 202 int room; 203 204 /* May truncate message to avoid a hit-return prompt */ 205 if ((!msg_scroll && !need_wait_return && shortmess(SHM_TRUNCALL) 206 && !exmode_active && msg_silent == 0) || force) 207 { 208 len = vim_strsize(s); 209 if (msg_scrolled != 0) 210 /* Use all the columns. */ 211 room = (int)(Rows - msg_row) * Columns - 1; 212 else 213 /* Use up to 'showcmd' column. */ 214 room = (int)(Rows - msg_row - 1) * Columns + sc_col - 1; 215 if (len > room && room > 0) 216 { 217 #ifdef FEAT_MBYTE 218 if (enc_utf8) 219 /* may have up to 18 bytes per cell (6 per char, up to two 220 * composing chars) */ 221 len = (room + 2) * 18; 222 else if (enc_dbcs == DBCS_JPNU) 223 /* may have up to 2 bytes per cell for euc-jp */ 224 len = (room + 2) * 2; 225 else 226 #endif 227 len = room + 2; 228 buf = alloc(len); 229 if (buf != NULL) 230 trunc_string(s, buf, room, len); 231 } 232 } 233 return buf; 234 } 235 236 /* 237 * Truncate a string "s" to "buf" with cell width "room". 238 * "s" and "buf" may be equal. 239 */ 240 void 241 trunc_string( 242 char_u *s, 243 char_u *buf, 244 int room, 245 int buflen) 246 { 247 int half; 248 int len; 249 int e; 250 int i; 251 int n; 252 253 room -= 3; 254 half = room / 2; 255 len = 0; 256 257 /* First part: Start of the string. */ 258 for (e = 0; len < half && e < buflen; ++e) 259 { 260 if (s[e] == NUL) 261 { 262 /* text fits without truncating! */ 263 buf[e] = NUL; 264 return; 265 } 266 n = ptr2cells(s + e); 267 if (len + n >= half) 268 break; 269 len += n; 270 buf[e] = s[e]; 271 #ifdef FEAT_MBYTE 272 if (has_mbyte) 273 for (n = (*mb_ptr2len)(s + e); --n > 0; ) 274 { 275 if (++e == buflen) 276 break; 277 buf[e] = s[e]; 278 } 279 #endif 280 } 281 282 /* Last part: End of the string. */ 283 i = e; 284 #ifdef FEAT_MBYTE 285 if (enc_dbcs != 0) 286 { 287 /* For DBCS going backwards in a string is slow, but 288 * computing the cell width isn't too slow: go forward 289 * until the rest fits. */ 290 n = vim_strsize(s + i); 291 while (len + n > room) 292 { 293 n -= ptr2cells(s + i); 294 i += (*mb_ptr2len)(s + i); 295 } 296 } 297 else if (enc_utf8) 298 { 299 /* For UTF-8 we can go backwards easily. */ 300 half = i = (int)STRLEN(s); 301 for (;;) 302 { 303 do 304 half = half - (*mb_head_off)(s, s + half - 1) - 1; 305 while (utf_iscomposing(utf_ptr2char(s + half)) && half > 0); 306 n = ptr2cells(s + half); 307 if (len + n > room) 308 break; 309 len += n; 310 i = half; 311 } 312 } 313 else 314 #endif 315 { 316 for (i = (int)STRLEN(s); len + (n = ptr2cells(s + i - 1)) <= room; --i) 317 len += n; 318 } 319 320 /* Set the middle and copy the last part. */ 321 if (e + 3 < buflen) 322 { 323 mch_memmove(buf + e, "...", (size_t)3); 324 len = (int)STRLEN(s + i) + 1; 325 if (len >= buflen - e - 3) 326 len = buflen - e - 3 - 1; 327 mch_memmove(buf + e + 3, s + i, len); 328 buf[e + 3 + len - 1] = NUL; 329 } 330 else 331 { 332 buf[e - 1] = NUL; /* make sure it is truncated */ 333 } 334 } 335 336 /* 337 * Automatic prototype generation does not understand this function. 338 * Note: Caller of smgs() and smsg_attr() must check the resulting string is 339 * shorter than IOSIZE!!! 340 */ 341 #ifndef PROTO 342 343 int vim_snprintf(char *str, size_t str_m, char *fmt, ...); 344 345 int 346 # ifdef __BORLANDC__ 347 _RTLENTRYF 348 # endif 349 smsg(char_u *s, ...) 350 { 351 va_list arglist; 352 353 va_start(arglist, s); 354 vim_vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist, NULL); 355 va_end(arglist); 356 return msg(IObuff); 357 } 358 359 int 360 # ifdef __BORLANDC__ 361 _RTLENTRYF 362 # endif 363 smsg_attr(int attr, char_u *s, ...) 364 { 365 va_list arglist; 366 367 va_start(arglist, s); 368 vim_vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist, NULL); 369 va_end(arglist); 370 return msg_attr(IObuff, attr); 371 } 372 373 #endif 374 375 /* 376 * Remember the last sourcing name/lnum used in an error message, so that it 377 * isn't printed each time when it didn't change. 378 */ 379 static int last_sourcing_lnum = 0; 380 static char_u *last_sourcing_name = NULL; 381 382 /* 383 * Reset the last used sourcing name/lnum. Makes sure it is displayed again 384 * for the next error message; 385 */ 386 void 387 reset_last_sourcing(void) 388 { 389 vim_free(last_sourcing_name); 390 last_sourcing_name = NULL; 391 last_sourcing_lnum = 0; 392 } 393 394 /* 395 * Return TRUE if "sourcing_name" differs from "last_sourcing_name". 396 */ 397 static int 398 other_sourcing_name(void) 399 { 400 if (sourcing_name != NULL) 401 { 402 if (last_sourcing_name != NULL) 403 return STRCMP(sourcing_name, last_sourcing_name) != 0; 404 return TRUE; 405 } 406 return FALSE; 407 } 408 409 /* 410 * Get the message about the source, as used for an error message. 411 * Returns an allocated string with room for one more character. 412 * Returns NULL when no message is to be given. 413 */ 414 static char_u * 415 get_emsg_source(void) 416 { 417 char_u *Buf, *p; 418 419 if (sourcing_name != NULL && other_sourcing_name()) 420 { 421 p = (char_u *)_("Error detected while processing %s:"); 422 Buf = alloc((unsigned)(STRLEN(sourcing_name) + STRLEN(p))); 423 if (Buf != NULL) 424 sprintf((char *)Buf, (char *)p, sourcing_name); 425 return Buf; 426 } 427 return NULL; 428 } 429 430 /* 431 * Get the message about the source lnum, as used for an error message. 432 * Returns an allocated string with room for one more character. 433 * Returns NULL when no message is to be given. 434 */ 435 static char_u * 436 get_emsg_lnum(void) 437 { 438 char_u *Buf, *p; 439 440 /* lnum is 0 when executing a command from the command line 441 * argument, we don't want a line number then */ 442 if (sourcing_name != NULL 443 && (other_sourcing_name() || sourcing_lnum != last_sourcing_lnum) 444 && sourcing_lnum != 0) 445 { 446 p = (char_u *)_("line %4ld:"); 447 Buf = alloc((unsigned)(STRLEN(p) + 20)); 448 if (Buf != NULL) 449 sprintf((char *)Buf, (char *)p, (long)sourcing_lnum); 450 return Buf; 451 } 452 return NULL; 453 } 454 455 /* 456 * Display name and line number for the source of an error. 457 * Remember the file name and line number, so that for the next error the info 458 * is only displayed if it changed. 459 */ 460 void 461 msg_source(int attr) 462 { 463 char_u *p; 464 465 ++no_wait_return; 466 p = get_emsg_source(); 467 if (p != NULL) 468 { 469 msg_attr(p, attr); 470 vim_free(p); 471 } 472 p = get_emsg_lnum(); 473 if (p != NULL) 474 { 475 msg_attr(p, hl_attr(HLF_N)); 476 vim_free(p); 477 last_sourcing_lnum = sourcing_lnum; /* only once for each line */ 478 } 479 480 /* remember the last sourcing name printed, also when it's empty */ 481 if (sourcing_name == NULL || other_sourcing_name()) 482 { 483 vim_free(last_sourcing_name); 484 if (sourcing_name == NULL) 485 last_sourcing_name = NULL; 486 else 487 last_sourcing_name = vim_strsave(sourcing_name); 488 } 489 --no_wait_return; 490 } 491 492 /* 493 * Return TRUE if not giving error messages right now: 494 * If "emsg_off" is set: no error messages at the moment. 495 * If "msg" is in 'debug': do error message but without side effects. 496 * If "emsg_skip" is set: never do error messages. 497 */ 498 int 499 emsg_not_now(void) 500 { 501 if ((emsg_off > 0 && vim_strchr(p_debug, 'm') == NULL 502 && vim_strchr(p_debug, 't') == NULL) 503 #ifdef FEAT_EVAL 504 || emsg_skip > 0 505 #endif 506 ) 507 return TRUE; 508 return FALSE; 509 } 510 511 /* 512 * emsg() - display an error message 513 * 514 * Rings the bell, if appropriate, and calls message() to do the real work 515 * When terminal not initialized (yet) mch_errmsg(..) is used. 516 * 517 * return TRUE if wait_return not called 518 */ 519 int 520 emsg(char_u *s) 521 { 522 int attr; 523 char_u *p; 524 #ifdef FEAT_EVAL 525 int ignore = FALSE; 526 int severe; 527 #endif 528 529 /* Skip this if not giving error messages at the moment. */ 530 if (emsg_not_now()) 531 return TRUE; 532 533 called_emsg = TRUE; 534 ex_exitval = 1; 535 536 /* 537 * If "emsg_severe" is TRUE: When an error exception is to be thrown, 538 * prefer this message over previous messages for the same command. 539 */ 540 #ifdef FEAT_EVAL 541 severe = emsg_severe; 542 emsg_severe = FALSE; 543 #endif 544 545 if (!emsg_off || vim_strchr(p_debug, 't') != NULL) 546 { 547 #ifdef FEAT_EVAL 548 /* 549 * Cause a throw of an error exception if appropriate. Don't display 550 * the error message in this case. (If no matching catch clause will 551 * be found, the message will be displayed later on.) "ignore" is set 552 * when the message should be ignored completely (used for the 553 * interrupt message). 554 */ 555 if (cause_errthrow(s, severe, &ignore) == TRUE) 556 { 557 if (!ignore) 558 did_emsg = TRUE; 559 return TRUE; 560 } 561 562 /* set "v:errmsg", also when using ":silent! cmd" */ 563 set_vim_var_string(VV_ERRMSG, s, -1); 564 #endif 565 566 /* 567 * When using ":silent! cmd" ignore error messages. 568 * But do write it to the redirection file. 569 */ 570 if (emsg_silent != 0) 571 { 572 msg_start(); 573 p = get_emsg_source(); 574 if (p != NULL) 575 { 576 STRCAT(p, "\n"); 577 redir_write(p, -1); 578 vim_free(p); 579 } 580 p = get_emsg_lnum(); 581 if (p != NULL) 582 { 583 STRCAT(p, "\n"); 584 redir_write(p, -1); 585 vim_free(p); 586 } 587 redir_write(s, -1); 588 return TRUE; 589 } 590 591 /* Reset msg_silent, an error causes messages to be switched back on. */ 592 msg_silent = 0; 593 cmd_silent = FALSE; 594 595 if (global_busy) /* break :global command */ 596 ++global_busy; 597 598 if (p_eb) 599 beep_flush(); /* also includes flush_buffers() */ 600 else 601 flush_buffers(FALSE); /* flush internal buffers */ 602 did_emsg = TRUE; /* flag for DoOneCmd() */ 603 } 604 605 emsg_on_display = TRUE; /* remember there is an error message */ 606 ++msg_scroll; /* don't overwrite a previous message */ 607 attr = hl_attr(HLF_E); /* set highlight mode for error messages */ 608 if (msg_scrolled != 0) 609 need_wait_return = TRUE; /* needed in case emsg() is called after 610 * wait_return has reset need_wait_return 611 * and a redraw is expected because 612 * msg_scrolled is non-zero */ 613 614 /* 615 * Display name and line number for the source of the error. 616 */ 617 msg_source(attr); 618 619 /* 620 * Display the error message itself. 621 */ 622 msg_nowait = FALSE; /* wait for this msg */ 623 return msg_attr(s, attr); 624 } 625 626 /* 627 * Print an error message with one "%s" and one string argument. 628 */ 629 int 630 emsg2(char_u *s, char_u *a1) 631 { 632 return emsg3(s, a1, NULL); 633 } 634 635 /* emsg3() and emsgn() are in misc2.c to avoid warnings for the prototypes. */ 636 637 void 638 emsg_invreg(int name) 639 { 640 EMSG2(_("E354: Invalid register name: '%s'"), transchar(name)); 641 } 642 643 /* 644 * Like msg(), but truncate to a single line if p_shm contains 't', or when 645 * "force" is TRUE. This truncates in another way as for normal messages. 646 * Careful: The string may be changed by msg_may_trunc()! 647 * Returns a pointer to the printed message, if wait_return() not called. 648 */ 649 char_u * 650 msg_trunc_attr(char_u *s, int force, int attr) 651 { 652 int n; 653 654 /* Add message to history before truncating */ 655 add_msg_hist(s, -1, attr); 656 657 s = msg_may_trunc(force, s); 658 659 msg_hist_off = TRUE; 660 n = msg_attr(s, attr); 661 msg_hist_off = FALSE; 662 663 if (n) 664 return s; 665 return NULL; 666 } 667 668 /* 669 * Check if message "s" should be truncated at the start (for filenames). 670 * Return a pointer to where the truncated message starts. 671 * Note: May change the message by replacing a character with '<'. 672 */ 673 char_u * 674 msg_may_trunc(int force, char_u *s) 675 { 676 int n; 677 int room; 678 679 room = (int)(Rows - cmdline_row - 1) * Columns + sc_col - 1; 680 if ((force || (shortmess(SHM_TRUNC) && !exmode_active)) 681 && (n = (int)STRLEN(s) - room) > 0) 682 { 683 #ifdef FEAT_MBYTE 684 if (has_mbyte) 685 { 686 int size = vim_strsize(s); 687 688 /* There may be room anyway when there are multibyte chars. */ 689 if (size <= room) 690 return s; 691 692 for (n = 0; size >= room; ) 693 { 694 size -= (*mb_ptr2cells)(s + n); 695 n += (*mb_ptr2len)(s + n); 696 } 697 --n; 698 } 699 #endif 700 s += n; 701 *s = '<'; 702 } 703 return s; 704 } 705 706 static void 707 add_msg_hist( 708 char_u *s, 709 int len, /* -1 for undetermined length */ 710 int attr) 711 { 712 struct msg_hist *p; 713 714 if (msg_hist_off || msg_silent != 0) 715 return; 716 717 /* Don't let the message history get too big */ 718 while (msg_hist_len > MAX_MSG_HIST_LEN) 719 (void)delete_first_msg(); 720 721 /* allocate an entry and add the message at the end of the history */ 722 p = (struct msg_hist *)alloc((int)sizeof(struct msg_hist)); 723 if (p != NULL) 724 { 725 if (len < 0) 726 len = (int)STRLEN(s); 727 /* remove leading and trailing newlines */ 728 while (len > 0 && *s == '\n') 729 { 730 ++s; 731 --len; 732 } 733 while (len > 0 && s[len - 1] == '\n') 734 --len; 735 p->msg = vim_strnsave(s, len); 736 p->next = NULL; 737 p->attr = attr; 738 if (last_msg_hist != NULL) 739 last_msg_hist->next = p; 740 last_msg_hist = p; 741 if (first_msg_hist == NULL) 742 first_msg_hist = last_msg_hist; 743 ++msg_hist_len; 744 } 745 } 746 747 /* 748 * Delete the first (oldest) message from the history. 749 * Returns FAIL if there are no messages. 750 */ 751 int 752 delete_first_msg(void) 753 { 754 struct msg_hist *p; 755 756 if (msg_hist_len <= 0) 757 return FAIL; 758 p = first_msg_hist; 759 first_msg_hist = p->next; 760 if (first_msg_hist == NULL) 761 last_msg_hist = NULL; /* history is empty */ 762 vim_free(p->msg); 763 vim_free(p); 764 --msg_hist_len; 765 return OK; 766 } 767 768 /* 769 * ":messages" command. 770 */ 771 void 772 ex_messages(exarg_T *eap UNUSED) 773 { 774 struct msg_hist *p; 775 char_u *s; 776 777 msg_hist_off = TRUE; 778 779 s = mch_getenv((char_u *)"LANG"); 780 if (s != NULL && *s != NUL) 781 msg_attr((char_u *) 782 _("Messages maintainer: Bram Moolenaar <[email protected]>"), 783 hl_attr(HLF_T)); 784 785 for (p = first_msg_hist; p != NULL && !got_int; p = p->next) 786 if (p->msg != NULL) 787 msg_attr(p->msg, p->attr); 788 789 msg_hist_off = FALSE; 790 } 791 792 #if defined(FEAT_CON_DIALOG) || defined(FIND_REPLACE_DIALOG) || defined(PROTO) 793 /* 794 * Call this after prompting the user. This will avoid a hit-return message 795 * and a delay. 796 */ 797 void 798 msg_end_prompt(void) 799 { 800 need_wait_return = FALSE; 801 emsg_on_display = FALSE; 802 cmdline_row = msg_row; 803 msg_col = 0; 804 msg_clr_eos(); 805 lines_left = -1; 806 } 807 #endif 808 809 /* 810 * wait for the user to hit a key (normally a return) 811 * if 'redraw' is TRUE, clear and redraw the screen 812 * if 'redraw' is FALSE, just redraw the screen 813 * if 'redraw' is -1, don't redraw at all 814 */ 815 void 816 wait_return(int redraw) 817 { 818 int c; 819 int oldState; 820 int tmpState; 821 int had_got_int; 822 int save_Recording; 823 FILE *save_scriptout; 824 825 if (redraw == TRUE) 826 must_redraw = CLEAR; 827 828 /* If using ":silent cmd", don't wait for a return. Also don't set 829 * need_wait_return to do it later. */ 830 if (msg_silent != 0) 831 return; 832 833 /* 834 * When inside vgetc(), we can't wait for a typed character at all. 835 * With the global command (and some others) we only need one return at 836 * the end. Adjust cmdline_row to avoid the next message overwriting the 837 * last one. 838 */ 839 if (vgetc_busy > 0) 840 return; 841 need_wait_return = TRUE; 842 if (no_wait_return) 843 { 844 if (!exmode_active) 845 cmdline_row = msg_row; 846 return; 847 } 848 849 redir_off = TRUE; /* don't redirect this message */ 850 oldState = State; 851 if (quit_more) 852 { 853 c = CAR; /* just pretend CR was hit */ 854 quit_more = FALSE; 855 got_int = FALSE; 856 } 857 else if (exmode_active) 858 { 859 MSG_PUTS(" "); /* make sure the cursor is on the right line */ 860 c = CAR; /* no need for a return in ex mode */ 861 got_int = FALSE; 862 } 863 else 864 { 865 /* Make sure the hit-return prompt is on screen when 'guioptions' was 866 * just changed. */ 867 screenalloc(FALSE); 868 869 State = HITRETURN; 870 #ifdef FEAT_MOUSE 871 setmouse(); 872 #endif 873 #ifdef USE_ON_FLY_SCROLL 874 dont_scroll = TRUE; /* disallow scrolling here */ 875 #endif 876 /* Avoid the sequence that the user types ":" at the hit-return prompt 877 * to start an Ex command, but the file-changed dialog gets in the 878 * way. */ 879 if (need_check_timestamps) 880 check_timestamps(FALSE); 881 882 hit_return_msg(); 883 884 do 885 { 886 /* Remember "got_int", if it is set vgetc() probably returns a 887 * CTRL-C, but we need to loop then. */ 888 had_got_int = got_int; 889 890 /* Don't do mappings here, we put the character back in the 891 * typeahead buffer. */ 892 ++no_mapping; 893 ++allow_keys; 894 895 /* Temporarily disable Recording. If Recording is active, the 896 * character will be recorded later, since it will be added to the 897 * typebuf after the loop */ 898 save_Recording = Recording; 899 save_scriptout = scriptout; 900 Recording = FALSE; 901 scriptout = NULL; 902 c = safe_vgetc(); 903 if (had_got_int && !global_busy) 904 got_int = FALSE; 905 --no_mapping; 906 --allow_keys; 907 Recording = save_Recording; 908 scriptout = save_scriptout; 909 910 #ifdef FEAT_CLIPBOARD 911 /* Strange way to allow copying (yanking) a modeless selection at 912 * the hit-enter prompt. Use CTRL-Y, because the same is used in 913 * Cmdline-mode and it's harmless when there is no selection. */ 914 if (c == Ctrl_Y && clip_star.state == SELECT_DONE) 915 { 916 clip_copy_modeless_selection(TRUE); 917 c = K_IGNORE; 918 } 919 #endif 920 921 /* 922 * Allow scrolling back in the messages. 923 * Also accept scroll-down commands when messages fill the screen, 924 * to avoid that typing one 'j' too many makes the messages 925 * disappear. 926 */ 927 if (p_more && !p_cp) 928 { 929 if (c == 'b' || c == 'k' || c == 'u' || c == 'g' 930 || c == K_UP || c == K_PAGEUP) 931 { 932 if (msg_scrolled > Rows) 933 /* scroll back to show older messages */ 934 do_more_prompt(c); 935 else 936 { 937 msg_didout = FALSE; 938 c = K_IGNORE; 939 msg_col = 940 #ifdef FEAT_RIGHTLEFT 941 cmdmsg_rl ? Columns - 1 : 942 #endif 943 0; 944 } 945 if (quit_more) 946 { 947 c = CAR; /* just pretend CR was hit */ 948 quit_more = FALSE; 949 got_int = FALSE; 950 } 951 else if (c != K_IGNORE) 952 { 953 c = K_IGNORE; 954 hit_return_msg(); 955 } 956 } 957 else if (msg_scrolled > Rows - 2 958 && (c == 'j' || c == 'd' || c == 'f' 959 || c == K_DOWN || c == K_PAGEDOWN)) 960 c = K_IGNORE; 961 } 962 } while ((had_got_int && c == Ctrl_C) 963 || c == K_IGNORE 964 #ifdef FEAT_GUI 965 || c == K_VER_SCROLLBAR || c == K_HOR_SCROLLBAR 966 #endif 967 #ifdef FEAT_MOUSE 968 || c == K_LEFTDRAG || c == K_LEFTRELEASE 969 || c == K_MIDDLEDRAG || c == K_MIDDLERELEASE 970 || c == K_RIGHTDRAG || c == K_RIGHTRELEASE 971 || c == K_MOUSELEFT || c == K_MOUSERIGHT 972 || c == K_MOUSEDOWN || c == K_MOUSEUP 973 || (!mouse_has(MOUSE_RETURN) 974 && mouse_row < msg_row 975 && (c == K_LEFTMOUSE 976 || c == K_MIDDLEMOUSE 977 || c == K_RIGHTMOUSE 978 || c == K_X1MOUSE 979 || c == K_X2MOUSE)) 980 #endif 981 ); 982 ui_breakcheck(); 983 #ifdef FEAT_MOUSE 984 /* 985 * Avoid that the mouse-up event causes visual mode to start. 986 */ 987 if (c == K_LEFTMOUSE || c == K_MIDDLEMOUSE || c == K_RIGHTMOUSE 988 || c == K_X1MOUSE || c == K_X2MOUSE) 989 (void)jump_to_mouse(MOUSE_SETPOS, NULL, 0); 990 else 991 #endif 992 if (vim_strchr((char_u *)"\r\n ", c) == NULL && c != Ctrl_C) 993 { 994 /* Put the character back in the typeahead buffer. Don't use the 995 * stuff buffer, because lmaps wouldn't work. */ 996 ins_char_typebuf(c); 997 do_redraw = TRUE; /* need a redraw even though there is 998 typeahead */ 999 } 1000 } 1001 redir_off = FALSE; 1002 1003 /* 1004 * If the user hits ':', '?' or '/' we get a command line from the next 1005 * line. 1006 */ 1007 if (c == ':' || c == '?' || c == '/') 1008 { 1009 if (!exmode_active) 1010 cmdline_row = msg_row; 1011 skip_redraw = TRUE; /* skip redraw once */ 1012 do_redraw = FALSE; 1013 } 1014 1015 /* 1016 * If the window size changed set_shellsize() will redraw the screen. 1017 * Otherwise the screen is only redrawn if 'redraw' is set and no ':' 1018 * typed. 1019 */ 1020 tmpState = State; 1021 State = oldState; /* restore State before set_shellsize */ 1022 #ifdef FEAT_MOUSE 1023 setmouse(); 1024 #endif 1025 msg_check(); 1026 1027 #if defined(UNIX) || defined(VMS) 1028 /* 1029 * When switching screens, we need to output an extra newline on exit. 1030 */ 1031 if (swapping_screen() && !termcap_active) 1032 newline_on_exit = TRUE; 1033 #endif 1034 1035 need_wait_return = FALSE; 1036 did_wait_return = TRUE; 1037 emsg_on_display = FALSE; /* can delete error message now */ 1038 lines_left = -1; /* reset lines_left at next msg_start() */ 1039 reset_last_sourcing(); 1040 if (keep_msg != NULL && vim_strsize(keep_msg) >= 1041 (Rows - cmdline_row - 1) * Columns + sc_col) 1042 { 1043 vim_free(keep_msg); 1044 keep_msg = NULL; /* don't redisplay message, it's too long */ 1045 } 1046 1047 if (tmpState == SETWSIZE) /* got resize event while in vgetc() */ 1048 { 1049 starttermcap(); /* start termcap before redrawing */ 1050 shell_resized(); 1051 } 1052 else if (!skip_redraw 1053 && (redraw == TRUE || (msg_scrolled != 0 && redraw != -1))) 1054 { 1055 starttermcap(); /* start termcap before redrawing */ 1056 redraw_later(VALID); 1057 } 1058 } 1059 1060 /* 1061 * Write the hit-return prompt. 1062 */ 1063 static void 1064 hit_return_msg(void) 1065 { 1066 int save_p_more = p_more; 1067 1068 p_more = FALSE; /* don't want see this message when scrolling back */ 1069 if (msg_didout) /* start on a new line */ 1070 msg_putchar('\n'); 1071 if (got_int) 1072 MSG_PUTS(_("Interrupt: ")); 1073 1074 MSG_PUTS_ATTR(_("Press ENTER or type command to continue"), hl_attr(HLF_R)); 1075 if (!msg_use_printf()) 1076 msg_clr_eos(); 1077 p_more = save_p_more; 1078 } 1079 1080 /* 1081 * Set "keep_msg" to "s". Free the old value and check for NULL pointer. 1082 */ 1083 void 1084 set_keep_msg(char_u *s, int attr) 1085 { 1086 vim_free(keep_msg); 1087 if (s != NULL && msg_silent == 0) 1088 keep_msg = vim_strsave(s); 1089 else 1090 keep_msg = NULL; 1091 keep_msg_more = FALSE; 1092 keep_msg_attr = attr; 1093 } 1094 1095 #if defined(FEAT_TERMRESPONSE) || defined(PROTO) 1096 /* 1097 * If there currently is a message being displayed, set "keep_msg" to it, so 1098 * that it will be displayed again after redraw. 1099 */ 1100 void 1101 set_keep_msg_from_hist(void) 1102 { 1103 if (keep_msg == NULL && last_msg_hist != NULL && msg_scrolled == 0 1104 && (State & NORMAL)) 1105 set_keep_msg(last_msg_hist->msg, last_msg_hist->attr); 1106 } 1107 #endif 1108 1109 /* 1110 * Prepare for outputting characters in the command line. 1111 */ 1112 void 1113 msg_start(void) 1114 { 1115 int did_return = FALSE; 1116 1117 if (!msg_silent) 1118 { 1119 vim_free(keep_msg); 1120 keep_msg = NULL; /* don't display old message now */ 1121 } 1122 1123 #ifdef FEAT_EVAL 1124 if (need_clr_eos) 1125 { 1126 /* Halfway an ":echo" command and getting an (error) message: clear 1127 * any text from the command. */ 1128 need_clr_eos = FALSE; 1129 msg_clr_eos(); 1130 } 1131 #endif 1132 1133 if (!msg_scroll && full_screen) /* overwrite last message */ 1134 { 1135 msg_row = cmdline_row; 1136 msg_col = 1137 #ifdef FEAT_RIGHTLEFT 1138 cmdmsg_rl ? Columns - 1 : 1139 #endif 1140 0; 1141 } 1142 else if (msg_didout) /* start message on next line */ 1143 { 1144 msg_putchar('\n'); 1145 did_return = TRUE; 1146 if (exmode_active != EXMODE_NORMAL) 1147 cmdline_row = msg_row; 1148 } 1149 if (!msg_didany || lines_left < 0) 1150 msg_starthere(); 1151 if (msg_silent == 0) 1152 { 1153 msg_didout = FALSE; /* no output on current line yet */ 1154 cursor_off(); 1155 } 1156 1157 /* when redirecting, may need to start a new line. */ 1158 if (!did_return) 1159 redir_write((char_u *)"\n", -1); 1160 } 1161 1162 /* 1163 * Note that the current msg position is where messages start. 1164 */ 1165 void 1166 msg_starthere(void) 1167 { 1168 lines_left = cmdline_row; 1169 msg_didany = FALSE; 1170 } 1171 1172 void 1173 msg_putchar(int c) 1174 { 1175 msg_putchar_attr(c, 0); 1176 } 1177 1178 void 1179 msg_putchar_attr(int c, int attr) 1180 { 1181 #ifdef FEAT_MBYTE 1182 char_u buf[MB_MAXBYTES + 1]; 1183 #else 1184 char_u buf[4]; 1185 #endif 1186 1187 if (IS_SPECIAL(c)) 1188 { 1189 buf[0] = K_SPECIAL; 1190 buf[1] = K_SECOND(c); 1191 buf[2] = K_THIRD(c); 1192 buf[3] = NUL; 1193 } 1194 else 1195 { 1196 #ifdef FEAT_MBYTE 1197 buf[(*mb_char2bytes)(c, buf)] = NUL; 1198 #else 1199 buf[0] = c; 1200 buf[1] = NUL; 1201 #endif 1202 } 1203 msg_puts_attr(buf, attr); 1204 } 1205 1206 void 1207 msg_outnum(long n) 1208 { 1209 char_u buf[20]; 1210 1211 sprintf((char *)buf, "%ld", n); 1212 msg_puts(buf); 1213 } 1214 1215 void 1216 msg_home_replace(char_u *fname) 1217 { 1218 msg_home_replace_attr(fname, 0); 1219 } 1220 1221 #if defined(FEAT_FIND_ID) || defined(PROTO) 1222 void 1223 msg_home_replace_hl(char_u *fname) 1224 { 1225 msg_home_replace_attr(fname, hl_attr(HLF_D)); 1226 } 1227 #endif 1228 1229 static void 1230 msg_home_replace_attr(char_u *fname, int attr) 1231 { 1232 char_u *name; 1233 1234 name = home_replace_save(NULL, fname); 1235 if (name != NULL) 1236 msg_outtrans_attr(name, attr); 1237 vim_free(name); 1238 } 1239 1240 /* 1241 * Output 'len' characters in 'str' (including NULs) with translation 1242 * if 'len' is -1, output upto a NUL character. 1243 * Use attributes 'attr'. 1244 * Return the number of characters it takes on the screen. 1245 */ 1246 int 1247 msg_outtrans(char_u *str) 1248 { 1249 return msg_outtrans_attr(str, 0); 1250 } 1251 1252 int 1253 msg_outtrans_attr(char_u *str, int attr) 1254 { 1255 return msg_outtrans_len_attr(str, (int)STRLEN(str), attr); 1256 } 1257 1258 int 1259 msg_outtrans_len(char_u *str, int len) 1260 { 1261 return msg_outtrans_len_attr(str, len, 0); 1262 } 1263 1264 /* 1265 * Output one character at "p". Return pointer to the next character. 1266 * Handles multi-byte characters. 1267 */ 1268 char_u * 1269 msg_outtrans_one(char_u *p, int attr) 1270 { 1271 #ifdef FEAT_MBYTE 1272 int l; 1273 1274 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) 1275 { 1276 msg_outtrans_len_attr(p, l, attr); 1277 return p + l; 1278 } 1279 #endif 1280 msg_puts_attr(transchar_byte(*p), attr); 1281 return p + 1; 1282 } 1283 1284 int 1285 msg_outtrans_len_attr(char_u *msgstr, int len, int attr) 1286 { 1287 int retval = 0; 1288 char_u *str = msgstr; 1289 char_u *plain_start = msgstr; 1290 char_u *s; 1291 #ifdef FEAT_MBYTE 1292 int mb_l; 1293 int c; 1294 #endif 1295 1296 /* if MSG_HIST flag set, add message to history */ 1297 if (attr & MSG_HIST) 1298 { 1299 add_msg_hist(str, len, attr); 1300 attr &= ~MSG_HIST; 1301 } 1302 1303 #ifdef FEAT_MBYTE 1304 /* If the string starts with a composing character first draw a space on 1305 * which the composing char can be drawn. */ 1306 if (enc_utf8 && utf_iscomposing(utf_ptr2char(msgstr))) 1307 msg_puts_attr((char_u *)" ", attr); 1308 #endif 1309 1310 /* 1311 * Go over the string. Special characters are translated and printed. 1312 * Normal characters are printed several at a time. 1313 */ 1314 while (--len >= 0) 1315 { 1316 #ifdef FEAT_MBYTE 1317 if (enc_utf8) 1318 /* Don't include composing chars after the end. */ 1319 mb_l = utfc_ptr2len_len(str, len + 1); 1320 else if (has_mbyte) 1321 mb_l = (*mb_ptr2len)(str); 1322 else 1323 mb_l = 1; 1324 if (has_mbyte && mb_l > 1) 1325 { 1326 c = (*mb_ptr2char)(str); 1327 if (vim_isprintc(c)) 1328 /* printable multi-byte char: count the cells. */ 1329 retval += (*mb_ptr2cells)(str); 1330 else 1331 { 1332 /* unprintable multi-byte char: print the printable chars so 1333 * far and the translation of the unprintable char. */ 1334 if (str > plain_start) 1335 msg_puts_attr_len(plain_start, (int)(str - plain_start), 1336 attr); 1337 plain_start = str + mb_l; 1338 msg_puts_attr(transchar(c), attr == 0 ? hl_attr(HLF_8) : attr); 1339 retval += char2cells(c); 1340 } 1341 len -= mb_l - 1; 1342 str += mb_l; 1343 } 1344 else 1345 #endif 1346 { 1347 s = transchar_byte(*str); 1348 if (s[1] != NUL) 1349 { 1350 /* unprintable char: print the printable chars so far and the 1351 * translation of the unprintable char. */ 1352 if (str > plain_start) 1353 msg_puts_attr_len(plain_start, (int)(str - plain_start), 1354 attr); 1355 plain_start = str + 1; 1356 msg_puts_attr(s, attr == 0 ? hl_attr(HLF_8) : attr); 1357 retval += (int)STRLEN(s); 1358 } 1359 else 1360 ++retval; 1361 ++str; 1362 } 1363 } 1364 1365 if (str > plain_start) 1366 /* print the printable chars at the end */ 1367 msg_puts_attr_len(plain_start, (int)(str - plain_start), attr); 1368 1369 return retval; 1370 } 1371 1372 #if defined(FEAT_QUICKFIX) || defined(PROTO) 1373 void 1374 msg_make(char_u *arg) 1375 { 1376 int i; 1377 static char_u *str = (char_u *)"eeffoc", *rs = (char_u *)"Plon#dqg#vxjduB"; 1378 1379 arg = skipwhite(arg); 1380 for (i = 5; *arg && i >= 0; --i) 1381 if (*arg++ != str[i]) 1382 break; 1383 if (i < 0) 1384 { 1385 msg_putchar('\n'); 1386 for (i = 0; rs[i]; ++i) 1387 msg_putchar(rs[i] - 3); 1388 } 1389 } 1390 #endif 1391 1392 /* 1393 * Output the string 'str' upto a NUL character. 1394 * Return the number of characters it takes on the screen. 1395 * 1396 * If K_SPECIAL is encountered, then it is taken in conjunction with the 1397 * following character and shown as <F1>, <S-Up> etc. Any other character 1398 * which is not printable shown in <> form. 1399 * If 'from' is TRUE (lhs of a mapping), a space is shown as <Space>. 1400 * If a character is displayed in one of these special ways, is also 1401 * highlighted (its highlight name is '8' in the p_hl variable). 1402 * Otherwise characters are not highlighted. 1403 * This function is used to show mappings, where we want to see how to type 1404 * the character/string -- webb 1405 */ 1406 int 1407 msg_outtrans_special( 1408 char_u *strstart, 1409 int from) /* TRUE for lhs of a mapping */ 1410 { 1411 char_u *str = strstart; 1412 int retval = 0; 1413 char_u *string; 1414 int attr; 1415 int len; 1416 1417 attr = hl_attr(HLF_8); 1418 while (*str != NUL) 1419 { 1420 /* Leading and trailing spaces need to be displayed in <> form. */ 1421 if ((str == strstart || str[1] == NUL) && *str == ' ') 1422 { 1423 string = (char_u *)"<Space>"; 1424 ++str; 1425 } 1426 else 1427 string = str2special(&str, from); 1428 len = vim_strsize(string); 1429 /* Highlight special keys */ 1430 msg_puts_attr(string, len > 1 1431 #ifdef FEAT_MBYTE 1432 && (*mb_ptr2len)(string) <= 1 1433 #endif 1434 ? attr : 0); 1435 retval += len; 1436 } 1437 return retval; 1438 } 1439 1440 #if defined(FEAT_EVAL) || defined(PROTO) 1441 /* 1442 * Return the lhs or rhs of a mapping, with the key codes turned into printable 1443 * strings, in an allocated string. 1444 */ 1445 char_u * 1446 str2special_save( 1447 char_u *str, 1448 int is_lhs) /* TRUE for lhs, FALSE for rhs */ 1449 { 1450 garray_T ga; 1451 char_u *p = str; 1452 1453 ga_init2(&ga, 1, 40); 1454 while (*p != NUL) 1455 ga_concat(&ga, str2special(&p, is_lhs)); 1456 ga_append(&ga, NUL); 1457 return (char_u *)ga.ga_data; 1458 } 1459 #endif 1460 1461 /* 1462 * Return the printable string for the key codes at "*sp". 1463 * Used for translating the lhs or rhs of a mapping to printable chars. 1464 * Advances "sp" to the next code. 1465 */ 1466 char_u * 1467 str2special( 1468 char_u **sp, 1469 int from) /* TRUE for lhs of mapping */ 1470 { 1471 int c; 1472 static char_u buf[7]; 1473 char_u *str = *sp; 1474 int modifiers = 0; 1475 int special = FALSE; 1476 1477 #ifdef FEAT_MBYTE 1478 if (has_mbyte) 1479 { 1480 char_u *p; 1481 1482 /* Try to un-escape a multi-byte character. Return the un-escaped 1483 * string if it is a multi-byte character. */ 1484 p = mb_unescape(sp); 1485 if (p != NULL) 1486 return p; 1487 } 1488 #endif 1489 1490 c = *str; 1491 if (c == K_SPECIAL && str[1] != NUL && str[2] != NUL) 1492 { 1493 if (str[1] == KS_MODIFIER) 1494 { 1495 modifiers = str[2]; 1496 str += 3; 1497 c = *str; 1498 } 1499 if (c == K_SPECIAL && str[1] != NUL && str[2] != NUL) 1500 { 1501 c = TO_SPECIAL(str[1], str[2]); 1502 str += 2; 1503 if (c == KS_ZERO) /* display <Nul> as ^@ or <Nul> */ 1504 c = NUL; 1505 } 1506 if (IS_SPECIAL(c) || modifiers) /* special key */ 1507 special = TRUE; 1508 } 1509 1510 #ifdef FEAT_MBYTE 1511 if (has_mbyte && !IS_SPECIAL(c)) 1512 { 1513 int len = (*mb_ptr2len)(str); 1514 1515 /* For multi-byte characters check for an illegal byte. */ 1516 if (has_mbyte && MB_BYTE2LEN(*str) > len) 1517 { 1518 transchar_nonprint(buf, c); 1519 *sp = str + 1; 1520 return buf; 1521 } 1522 /* Since 'special' is TRUE the multi-byte character 'c' will be 1523 * processed by get_special_key_name() */ 1524 c = (*mb_ptr2char)(str); 1525 *sp = str + len; 1526 } 1527 else 1528 #endif 1529 *sp = str + 1; 1530 1531 /* Make unprintable characters in <> form, also <M-Space> and <Tab>. 1532 * Use <Space> only for lhs of a mapping. */ 1533 if (special || char2cells(c) > 1 || (from && c == ' ')) 1534 return get_special_key_name(c, modifiers); 1535 buf[0] = c; 1536 buf[1] = NUL; 1537 return buf; 1538 } 1539 1540 /* 1541 * Translate a key sequence into special key names. 1542 */ 1543 void 1544 str2specialbuf(char_u *sp, char_u *buf, int len) 1545 { 1546 char_u *s; 1547 1548 *buf = NUL; 1549 while (*sp) 1550 { 1551 s = str2special(&sp, FALSE); 1552 if ((int)(STRLEN(s) + STRLEN(buf)) < len) 1553 STRCAT(buf, s); 1554 } 1555 } 1556 1557 /* 1558 * print line for :print or :list command 1559 */ 1560 void 1561 msg_prt_line(char_u *s, int list) 1562 { 1563 int c; 1564 int col = 0; 1565 int n_extra = 0; 1566 int c_extra = 0; 1567 char_u *p_extra = NULL; /* init to make SASC shut up */ 1568 int n; 1569 int attr = 0; 1570 char_u *trail = NULL; 1571 #ifdef FEAT_MBYTE 1572 int l; 1573 char_u buf[MB_MAXBYTES + 1]; 1574 #endif 1575 1576 if (curwin->w_p_list) 1577 list = TRUE; 1578 1579 /* find start of trailing whitespace */ 1580 if (list && lcs_trail) 1581 { 1582 trail = s + STRLEN(s); 1583 while (trail > s && vim_iswhite(trail[-1])) 1584 --trail; 1585 } 1586 1587 /* output a space for an empty line, otherwise the line will be 1588 * overwritten */ 1589 if (*s == NUL && !(list && lcs_eol != NUL)) 1590 msg_putchar(' '); 1591 1592 while (!got_int) 1593 { 1594 if (n_extra > 0) 1595 { 1596 --n_extra; 1597 if (c_extra) 1598 c = c_extra; 1599 else 1600 c = *p_extra++; 1601 } 1602 #ifdef FEAT_MBYTE 1603 else if (has_mbyte && (l = (*mb_ptr2len)(s)) > 1) 1604 { 1605 col += (*mb_ptr2cells)(s); 1606 if (lcs_nbsp != NUL && list 1607 && (mb_ptr2char(s) == 160 1608 || mb_ptr2char(s) == 0x202f)) 1609 { 1610 mb_char2bytes(lcs_nbsp, buf); 1611 buf[(*mb_ptr2len)(buf)] = NUL; 1612 } 1613 else 1614 { 1615 mch_memmove(buf, s, (size_t)l); 1616 buf[l] = NUL; 1617 } 1618 msg_puts(buf); 1619 s += l; 1620 continue; 1621 } 1622 #endif 1623 else 1624 { 1625 attr = 0; 1626 c = *s++; 1627 if (c == TAB && (!list || lcs_tab1)) 1628 { 1629 /* tab amount depends on current column */ 1630 n_extra = curbuf->b_p_ts - col % curbuf->b_p_ts - 1; 1631 if (!list) 1632 { 1633 c = ' '; 1634 c_extra = ' '; 1635 } 1636 else 1637 { 1638 c = lcs_tab1; 1639 c_extra = lcs_tab2; 1640 attr = hl_attr(HLF_8); 1641 } 1642 } 1643 else if (c == 160 && list && lcs_nbsp != NUL) 1644 { 1645 c = lcs_nbsp; 1646 attr = hl_attr(HLF_8); 1647 } 1648 else if (c == NUL && list && lcs_eol != NUL) 1649 { 1650 p_extra = (char_u *)""; 1651 c_extra = NUL; 1652 n_extra = 1; 1653 c = lcs_eol; 1654 attr = hl_attr(HLF_AT); 1655 --s; 1656 } 1657 else if (c != NUL && (n = byte2cells(c)) > 1) 1658 { 1659 n_extra = n - 1; 1660 p_extra = transchar_byte(c); 1661 c_extra = NUL; 1662 c = *p_extra++; 1663 /* Use special coloring to be able to distinguish <hex> from 1664 * the same in plain text. */ 1665 attr = hl_attr(HLF_8); 1666 } 1667 else if (c == ' ' && trail != NULL && s > trail) 1668 { 1669 c = lcs_trail; 1670 attr = hl_attr(HLF_8); 1671 } 1672 else if (c == ' ' && list && lcs_space != NUL) 1673 { 1674 c = lcs_space; 1675 attr = hl_attr(HLF_8); 1676 } 1677 } 1678 1679 if (c == NUL) 1680 break; 1681 1682 msg_putchar_attr(c, attr); 1683 col++; 1684 } 1685 msg_clr_eos(); 1686 } 1687 1688 #ifdef FEAT_MBYTE 1689 /* 1690 * Use screen_puts() to output one multi-byte character. 1691 * Return the pointer "s" advanced to the next character. 1692 */ 1693 static char_u * 1694 screen_puts_mbyte(char_u *s, int l, int attr) 1695 { 1696 int cw; 1697 1698 msg_didout = TRUE; /* remember that line is not empty */ 1699 cw = (*mb_ptr2cells)(s); 1700 if (cw > 1 && ( 1701 #ifdef FEAT_RIGHTLEFT 1702 cmdmsg_rl ? msg_col <= 1 : 1703 #endif 1704 msg_col == Columns - 1)) 1705 { 1706 /* Doesn't fit, print a highlighted '>' to fill it up. */ 1707 msg_screen_putchar('>', hl_attr(HLF_AT)); 1708 return s; 1709 } 1710 1711 screen_puts_len(s, l, msg_row, msg_col, attr); 1712 #ifdef FEAT_RIGHTLEFT 1713 if (cmdmsg_rl) 1714 { 1715 msg_col -= cw; 1716 if (msg_col == 0) 1717 { 1718 msg_col = Columns; 1719 ++msg_row; 1720 } 1721 } 1722 else 1723 #endif 1724 { 1725 msg_col += cw; 1726 if (msg_col >= Columns) 1727 { 1728 msg_col = 0; 1729 ++msg_row; 1730 } 1731 } 1732 return s + l; 1733 } 1734 #endif 1735 1736 /* 1737 * Output a string to the screen at position msg_row, msg_col. 1738 * Update msg_row and msg_col for the next message. 1739 */ 1740 void 1741 msg_puts(char_u *s) 1742 { 1743 msg_puts_attr(s, 0); 1744 } 1745 1746 void 1747 msg_puts_title( 1748 char_u *s) 1749 { 1750 msg_puts_attr(s, hl_attr(HLF_T)); 1751 } 1752 1753 /* 1754 * Show a message in such a way that it always fits in the line. Cut out a 1755 * part in the middle and replace it with "..." when necessary. 1756 * Does not handle multi-byte characters! 1757 */ 1758 void 1759 msg_puts_long_attr(char_u *longstr, int attr) 1760 { 1761 msg_puts_long_len_attr(longstr, (int)STRLEN(longstr), attr); 1762 } 1763 1764 void 1765 msg_puts_long_len_attr(char_u *longstr, int len, int attr) 1766 { 1767 int slen = len; 1768 int room; 1769 1770 room = Columns - msg_col; 1771 if (len > room && room >= 20) 1772 { 1773 slen = (room - 3) / 2; 1774 msg_outtrans_len_attr(longstr, slen, attr); 1775 msg_puts_attr((char_u *)"...", hl_attr(HLF_8)); 1776 } 1777 msg_outtrans_len_attr(longstr + len - slen, slen, attr); 1778 } 1779 1780 /* 1781 * Basic function for writing a message with highlight attributes. 1782 */ 1783 void 1784 msg_puts_attr(char_u *s, int attr) 1785 { 1786 msg_puts_attr_len(s, -1, attr); 1787 } 1788 1789 /* 1790 * Like msg_puts_attr(), but with a maximum length "maxlen" (in bytes). 1791 * When "maxlen" is -1 there is no maximum length. 1792 * When "maxlen" is >= 0 the message is not put in the history. 1793 */ 1794 static void 1795 msg_puts_attr_len(char_u *str, int maxlen, int attr) 1796 { 1797 /* 1798 * If redirection is on, also write to the redirection file. 1799 */ 1800 redir_write(str, maxlen); 1801 1802 /* 1803 * Don't print anything when using ":silent cmd". 1804 */ 1805 if (msg_silent != 0) 1806 return; 1807 1808 /* if MSG_HIST flag set, add message to history */ 1809 if ((attr & MSG_HIST) && maxlen < 0) 1810 { 1811 add_msg_hist(str, -1, attr); 1812 attr &= ~MSG_HIST; 1813 } 1814 1815 /* 1816 * When writing something to the screen after it has scrolled, requires a 1817 * wait-return prompt later. Needed when scrolling, resetting 1818 * need_wait_return after some prompt, and then outputting something 1819 * without scrolling 1820 */ 1821 if (msg_scrolled != 0 && !msg_scrolled_ign) 1822 need_wait_return = TRUE; 1823 msg_didany = TRUE; /* remember that something was outputted */ 1824 1825 /* 1826 * If there is no valid screen, use fprintf so we can see error messages. 1827 * If termcap is not active, we may be writing in an alternate console 1828 * window, cursor positioning may not work correctly (window size may be 1829 * different, e.g. for Win32 console) or we just don't know where the 1830 * cursor is. 1831 */ 1832 if (msg_use_printf()) 1833 msg_puts_printf(str, maxlen); 1834 else 1835 msg_puts_display(str, maxlen, attr, FALSE); 1836 } 1837 1838 /* 1839 * The display part of msg_puts_attr_len(). 1840 * May be called recursively to display scroll-back text. 1841 */ 1842 static void 1843 msg_puts_display( 1844 char_u *str, 1845 int maxlen, 1846 int attr, 1847 int recurse) 1848 { 1849 char_u *s = str; 1850 char_u *t_s = str; /* string from "t_s" to "s" is still todo */ 1851 int t_col = 0; /* screen cells todo, 0 when "t_s" not used */ 1852 #ifdef FEAT_MBYTE 1853 int l; 1854 int cw; 1855 #endif 1856 char_u *sb_str = str; 1857 int sb_col = msg_col; 1858 int wrap; 1859 int did_last_char; 1860 1861 did_wait_return = FALSE; 1862 while ((maxlen < 0 || (int)(s - str) < maxlen) && *s != NUL) 1863 { 1864 /* 1865 * We are at the end of the screen line when: 1866 * - When outputting a newline. 1867 * - When outputting a character in the last column. 1868 */ 1869 if (!recurse && msg_row >= Rows - 1 && (*s == '\n' || ( 1870 #ifdef FEAT_RIGHTLEFT 1871 cmdmsg_rl 1872 ? ( 1873 msg_col <= 1 1874 || (*s == TAB && msg_col <= 7) 1875 # ifdef FEAT_MBYTE 1876 || (has_mbyte && (*mb_ptr2cells)(s) > 1 && msg_col <= 2) 1877 # endif 1878 ) 1879 : 1880 #endif 1881 (msg_col + t_col >= Columns - 1 1882 || (*s == TAB && msg_col + t_col >= ((Columns - 1) & ~7)) 1883 # ifdef FEAT_MBYTE 1884 || (has_mbyte && (*mb_ptr2cells)(s) > 1 1885 && msg_col + t_col >= Columns - 2) 1886 # endif 1887 )))) 1888 { 1889 /* 1890 * The screen is scrolled up when at the last row (some terminals 1891 * scroll automatically, some don't. To avoid problems we scroll 1892 * ourselves). 1893 */ 1894 if (t_col > 0) 1895 /* output postponed text */ 1896 t_puts(&t_col, t_s, s, attr); 1897 1898 /* When no more prompt and no more room, truncate here */ 1899 if (msg_no_more && lines_left == 0) 1900 break; 1901 1902 /* Scroll the screen up one line. */ 1903 msg_scroll_up(); 1904 1905 msg_row = Rows - 2; 1906 if (msg_col >= Columns) /* can happen after screen resize */ 1907 msg_col = Columns - 1; 1908 1909 /* Display char in last column before showing more-prompt. */ 1910 if (*s >= ' ' 1911 #ifdef FEAT_RIGHTLEFT 1912 && !cmdmsg_rl 1913 #endif 1914 ) 1915 { 1916 #ifdef FEAT_MBYTE 1917 if (has_mbyte) 1918 { 1919 if (enc_utf8 && maxlen >= 0) 1920 /* avoid including composing chars after the end */ 1921 l = utfc_ptr2len_len(s, (int)((str + maxlen) - s)); 1922 else 1923 l = (*mb_ptr2len)(s); 1924 s = screen_puts_mbyte(s, l, attr); 1925 } 1926 else 1927 #endif 1928 msg_screen_putchar(*s++, attr); 1929 did_last_char = TRUE; 1930 } 1931 else 1932 did_last_char = FALSE; 1933 1934 if (p_more) 1935 /* store text for scrolling back */ 1936 store_sb_text(&sb_str, s, attr, &sb_col, TRUE); 1937 1938 inc_msg_scrolled(); 1939 need_wait_return = TRUE; /* may need wait_return in main() */ 1940 if (must_redraw < VALID) 1941 must_redraw = VALID; 1942 redraw_cmdline = TRUE; 1943 if (cmdline_row > 0 && !exmode_active) 1944 --cmdline_row; 1945 1946 /* 1947 * If screen is completely filled and 'more' is set then wait 1948 * for a character. 1949 */ 1950 if (lines_left > 0) 1951 --lines_left; 1952 if (p_more && lines_left == 0 && State != HITRETURN 1953 && !msg_no_more && !exmode_active) 1954 { 1955 #ifdef FEAT_CON_DIALOG 1956 if (do_more_prompt(NUL)) 1957 s = confirm_msg_tail; 1958 #else 1959 (void)do_more_prompt(NUL); 1960 #endif 1961 if (quit_more) 1962 return; 1963 } 1964 1965 /* When we displayed a char in last column need to check if there 1966 * is still more. */ 1967 if (did_last_char) 1968 continue; 1969 } 1970 1971 wrap = *s == '\n' 1972 || msg_col + t_col >= Columns 1973 #ifdef FEAT_MBYTE 1974 || (has_mbyte && (*mb_ptr2cells)(s) > 1 1975 && msg_col + t_col >= Columns - 1) 1976 #endif 1977 ; 1978 if (t_col > 0 && (wrap || *s == '\r' || *s == '\b' 1979 || *s == '\t' || *s == BELL)) 1980 /* output any postponed text */ 1981 t_puts(&t_col, t_s, s, attr); 1982 1983 if (wrap && p_more && !recurse) 1984 /* store text for scrolling back */ 1985 store_sb_text(&sb_str, s, attr, &sb_col, TRUE); 1986 1987 if (*s == '\n') /* go to next line */ 1988 { 1989 msg_didout = FALSE; /* remember that line is empty */ 1990 #ifdef FEAT_RIGHTLEFT 1991 if (cmdmsg_rl) 1992 msg_col = Columns - 1; 1993 else 1994 #endif 1995 msg_col = 0; 1996 if (++msg_row >= Rows) /* safety check */ 1997 msg_row = Rows - 1; 1998 } 1999 else if (*s == '\r') /* go to column 0 */ 2000 { 2001 msg_col = 0; 2002 } 2003 else if (*s == '\b') /* go to previous char */ 2004 { 2005 if (msg_col) 2006 --msg_col; 2007 } 2008 else if (*s == TAB) /* translate Tab into spaces */ 2009 { 2010 do 2011 msg_screen_putchar(' ', attr); 2012 while (msg_col & 7); 2013 } 2014 else if (*s == BELL) /* beep (from ":sh") */ 2015 vim_beep(BO_SH); 2016 else 2017 { 2018 #ifdef FEAT_MBYTE 2019 if (has_mbyte) 2020 { 2021 cw = (*mb_ptr2cells)(s); 2022 if (enc_utf8 && maxlen >= 0) 2023 /* avoid including composing chars after the end */ 2024 l = utfc_ptr2len_len(s, (int)((str + maxlen) - s)); 2025 else 2026 l = (*mb_ptr2len)(s); 2027 } 2028 else 2029 { 2030 cw = 1; 2031 l = 1; 2032 } 2033 #endif 2034 /* When drawing from right to left or when a double-wide character 2035 * doesn't fit, draw a single character here. Otherwise collect 2036 * characters and draw them all at once later. */ 2037 #if defined(FEAT_RIGHTLEFT) || defined(FEAT_MBYTE) 2038 if ( 2039 # ifdef FEAT_RIGHTLEFT 2040 cmdmsg_rl 2041 # ifdef FEAT_MBYTE 2042 || 2043 # endif 2044 # endif 2045 # ifdef FEAT_MBYTE 2046 (cw > 1 && msg_col + t_col >= Columns - 1) 2047 # endif 2048 ) 2049 { 2050 # ifdef FEAT_MBYTE 2051 if (l > 1) 2052 s = screen_puts_mbyte(s, l, attr) - 1; 2053 else 2054 # endif 2055 msg_screen_putchar(*s, attr); 2056 } 2057 else 2058 #endif 2059 { 2060 /* postpone this character until later */ 2061 if (t_col == 0) 2062 t_s = s; 2063 #ifdef FEAT_MBYTE 2064 t_col += cw; 2065 s += l - 1; 2066 #else 2067 ++t_col; 2068 #endif 2069 } 2070 } 2071 ++s; 2072 } 2073 2074 /* output any postponed text */ 2075 if (t_col > 0) 2076 t_puts(&t_col, t_s, s, attr); 2077 if (p_more && !recurse) 2078 store_sb_text(&sb_str, s, attr, &sb_col, FALSE); 2079 2080 msg_check(); 2081 } 2082 2083 /* 2084 * Scroll the screen up one line for displaying the next message line. 2085 */ 2086 static void 2087 msg_scroll_up(void) 2088 { 2089 #ifdef FEAT_GUI 2090 /* Remove the cursor before scrolling, ScreenLines[] is going 2091 * to become invalid. */ 2092 if (gui.in_use) 2093 gui_undraw_cursor(); 2094 #endif 2095 /* scrolling up always works */ 2096 screen_del_lines(0, 0, 1, (int)Rows, TRUE, NULL); 2097 2098 if (!can_clear((char_u *)" ")) 2099 { 2100 /* Scrolling up doesn't result in the right background. Set the 2101 * background here. It's not efficient, but avoids that we have to do 2102 * it all over the code. */ 2103 screen_fill((int)Rows - 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2104 2105 /* Also clear the last char of the last but one line if it was not 2106 * cleared before to avoid a scroll-up. */ 2107 if (ScreenAttrs[LineOffset[Rows - 2] + Columns - 1] == (sattr_T)-1) 2108 screen_fill((int)Rows - 2, (int)Rows - 1, 2109 (int)Columns - 1, (int)Columns, ' ', ' ', 0); 2110 } 2111 } 2112 2113 /* 2114 * Increment "msg_scrolled". 2115 */ 2116 static void 2117 inc_msg_scrolled(void) 2118 { 2119 #ifdef FEAT_EVAL 2120 if (*get_vim_var_str(VV_SCROLLSTART) == NUL) 2121 { 2122 char_u *p = sourcing_name; 2123 char_u *tofree = NULL; 2124 int len; 2125 2126 /* v:scrollstart is empty, set it to the script/function name and line 2127 * number */ 2128 if (p == NULL) 2129 p = (char_u *)_("Unknown"); 2130 else 2131 { 2132 len = (int)STRLEN(p) + 40; 2133 tofree = alloc(len); 2134 if (tofree != NULL) 2135 { 2136 vim_snprintf((char *)tofree, len, _("%s line %ld"), 2137 p, (long)sourcing_lnum); 2138 p = tofree; 2139 } 2140 } 2141 set_vim_var_string(VV_SCROLLSTART, p, -1); 2142 vim_free(tofree); 2143 } 2144 #endif 2145 ++msg_scrolled; 2146 } 2147 2148 /* 2149 * To be able to scroll back at the "more" and "hit-enter" prompts we need to 2150 * store the displayed text and remember where screen lines start. 2151 */ 2152 typedef struct msgchunk_S msgchunk_T; 2153 struct msgchunk_S 2154 { 2155 msgchunk_T *sb_next; 2156 msgchunk_T *sb_prev; 2157 char sb_eol; /* TRUE when line ends after this text */ 2158 int sb_msg_col; /* column in which text starts */ 2159 int sb_attr; /* text attributes */ 2160 char_u sb_text[1]; /* text to be displayed, actually longer */ 2161 }; 2162 2163 static msgchunk_T *last_msgchunk = NULL; /* last displayed text */ 2164 2165 static msgchunk_T *msg_sb_start(msgchunk_T *mps); 2166 static msgchunk_T *disp_sb_line(int row, msgchunk_T *smp); 2167 2168 static int do_clear_sb_text = FALSE; /* clear text on next msg */ 2169 2170 /* 2171 * Store part of a printed message for displaying when scrolling back. 2172 */ 2173 static void 2174 store_sb_text( 2175 char_u **sb_str, /* start of string */ 2176 char_u *s, /* just after string */ 2177 int attr, 2178 int *sb_col, 2179 int finish) /* line ends */ 2180 { 2181 msgchunk_T *mp; 2182 2183 if (do_clear_sb_text) 2184 { 2185 clear_sb_text(); 2186 do_clear_sb_text = FALSE; 2187 } 2188 2189 if (s > *sb_str) 2190 { 2191 mp = (msgchunk_T *)alloc((int)(sizeof(msgchunk_T) + (s - *sb_str))); 2192 if (mp != NULL) 2193 { 2194 mp->sb_eol = finish; 2195 mp->sb_msg_col = *sb_col; 2196 mp->sb_attr = attr; 2197 vim_strncpy(mp->sb_text, *sb_str, s - *sb_str); 2198 2199 if (last_msgchunk == NULL) 2200 { 2201 last_msgchunk = mp; 2202 mp->sb_prev = NULL; 2203 } 2204 else 2205 { 2206 mp->sb_prev = last_msgchunk; 2207 last_msgchunk->sb_next = mp; 2208 last_msgchunk = mp; 2209 } 2210 mp->sb_next = NULL; 2211 } 2212 } 2213 else if (finish && last_msgchunk != NULL) 2214 last_msgchunk->sb_eol = TRUE; 2215 2216 *sb_str = s; 2217 *sb_col = 0; 2218 } 2219 2220 /* 2221 * Finished showing messages, clear the scroll-back text on the next message. 2222 */ 2223 void 2224 may_clear_sb_text(void) 2225 { 2226 do_clear_sb_text = TRUE; 2227 } 2228 2229 /* 2230 * Clear any text remembered for scrolling back. 2231 * Called when redrawing the screen. 2232 */ 2233 void 2234 clear_sb_text(void) 2235 { 2236 msgchunk_T *mp; 2237 2238 while (last_msgchunk != NULL) 2239 { 2240 mp = last_msgchunk->sb_prev; 2241 vim_free(last_msgchunk); 2242 last_msgchunk = mp; 2243 } 2244 } 2245 2246 /* 2247 * "g<" command. 2248 */ 2249 void 2250 show_sb_text(void) 2251 { 2252 msgchunk_T *mp; 2253 2254 /* Only show something if there is more than one line, otherwise it looks 2255 * weird, typing a command without output results in one line. */ 2256 mp = msg_sb_start(last_msgchunk); 2257 if (mp == NULL || mp->sb_prev == NULL) 2258 vim_beep(BO_MESS); 2259 else 2260 { 2261 do_more_prompt('G'); 2262 wait_return(FALSE); 2263 } 2264 } 2265 2266 /* 2267 * Move to the start of screen line in already displayed text. 2268 */ 2269 static msgchunk_T * 2270 msg_sb_start(msgchunk_T *mps) 2271 { 2272 msgchunk_T *mp = mps; 2273 2274 while (mp != NULL && mp->sb_prev != NULL && !mp->sb_prev->sb_eol) 2275 mp = mp->sb_prev; 2276 return mp; 2277 } 2278 2279 /* 2280 * Mark the last message chunk as finishing the line. 2281 */ 2282 void 2283 msg_sb_eol(void) 2284 { 2285 if (last_msgchunk != NULL) 2286 last_msgchunk->sb_eol = TRUE; 2287 } 2288 2289 /* 2290 * Display a screen line from previously displayed text at row "row". 2291 * Returns a pointer to the text for the next line (can be NULL). 2292 */ 2293 static msgchunk_T * 2294 disp_sb_line(int row, msgchunk_T *smp) 2295 { 2296 msgchunk_T *mp = smp; 2297 char_u *p; 2298 2299 for (;;) 2300 { 2301 msg_row = row; 2302 msg_col = mp->sb_msg_col; 2303 p = mp->sb_text; 2304 if (*p == '\n') /* don't display the line break */ 2305 ++p; 2306 msg_puts_display(p, -1, mp->sb_attr, TRUE); 2307 if (mp->sb_eol || mp->sb_next == NULL) 2308 break; 2309 mp = mp->sb_next; 2310 } 2311 return mp->sb_next; 2312 } 2313 2314 /* 2315 * Output any postponed text for msg_puts_attr_len(). 2316 */ 2317 static void 2318 t_puts( 2319 int *t_col, 2320 char_u *t_s, 2321 char_u *s, 2322 int attr) 2323 { 2324 /* output postponed text */ 2325 msg_didout = TRUE; /* remember that line is not empty */ 2326 screen_puts_len(t_s, (int)(s - t_s), msg_row, msg_col, attr); 2327 msg_col += *t_col; 2328 *t_col = 0; 2329 #ifdef FEAT_MBYTE 2330 /* If the string starts with a composing character don't increment the 2331 * column position for it. */ 2332 if (enc_utf8 && utf_iscomposing(utf_ptr2char(t_s))) 2333 --msg_col; 2334 #endif 2335 if (msg_col >= Columns) 2336 { 2337 msg_col = 0; 2338 ++msg_row; 2339 } 2340 } 2341 2342 /* 2343 * Returns TRUE when messages should be printed with mch_errmsg(). 2344 * This is used when there is no valid screen, so we can see error messages. 2345 * If termcap is not active, we may be writing in an alternate console 2346 * window, cursor positioning may not work correctly (window size may be 2347 * different, e.g. for Win32 console) or we just don't know where the 2348 * cursor is. 2349 */ 2350 int 2351 msg_use_printf(void) 2352 { 2353 return (!msg_check_screen() 2354 #if defined(WIN3264) && !defined(FEAT_GUI_MSWIN) 2355 || !termcap_active 2356 #endif 2357 || (swapping_screen() && !termcap_active) 2358 ); 2359 } 2360 2361 /* 2362 * Print a message when there is no valid screen. 2363 */ 2364 static void 2365 msg_puts_printf(char_u *str, int maxlen) 2366 { 2367 char_u *s = str; 2368 char_u buf[4]; 2369 char_u *p; 2370 2371 #ifdef WIN3264 2372 if (!(silent_mode && p_verbose == 0)) 2373 mch_settmode(TMODE_COOK); /* handle '\r' and '\n' correctly */ 2374 #endif 2375 while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen)) 2376 { 2377 if (!(silent_mode && p_verbose == 0)) 2378 { 2379 /* NL --> CR NL translation (for Unix, not for "--version") */ 2380 /* NL --> CR translation (for Mac) */ 2381 p = &buf[0]; 2382 if (*s == '\n' && !info_message) 2383 *p++ = '\r'; 2384 #if defined(USE_CR) && !defined(MACOS_X_UNIX) 2385 else 2386 #endif 2387 *p++ = *s; 2388 *p = '\0'; 2389 if (info_message) /* informative message, not an error */ 2390 mch_msg((char *)buf); 2391 else 2392 mch_errmsg((char *)buf); 2393 } 2394 2395 /* primitive way to compute the current column */ 2396 #ifdef FEAT_RIGHTLEFT 2397 if (cmdmsg_rl) 2398 { 2399 if (*s == '\r' || *s == '\n') 2400 msg_col = Columns - 1; 2401 else 2402 --msg_col; 2403 } 2404 else 2405 #endif 2406 { 2407 if (*s == '\r' || *s == '\n') 2408 msg_col = 0; 2409 else 2410 ++msg_col; 2411 } 2412 ++s; 2413 } 2414 msg_didout = TRUE; /* assume that line is not empty */ 2415 2416 #ifdef WIN3264 2417 if (!(silent_mode && p_verbose == 0)) 2418 mch_settmode(TMODE_RAW); 2419 #endif 2420 } 2421 2422 /* 2423 * Show the more-prompt and handle the user response. 2424 * This takes care of scrolling back and displaying previously displayed text. 2425 * When at hit-enter prompt "typed_char" is the already typed character, 2426 * otherwise it's NUL. 2427 * Returns TRUE when jumping ahead to "confirm_msg_tail". 2428 */ 2429 static int 2430 do_more_prompt(int typed_char) 2431 { 2432 int used_typed_char = typed_char; 2433 int oldState = State; 2434 int c; 2435 #ifdef FEAT_CON_DIALOG 2436 int retval = FALSE; 2437 #endif 2438 int toscroll; 2439 msgchunk_T *mp_last = NULL; 2440 msgchunk_T *mp; 2441 int i; 2442 2443 if (typed_char == 'G') 2444 { 2445 /* "g<": Find first line on the last page. */ 2446 mp_last = msg_sb_start(last_msgchunk); 2447 for (i = 0; i < Rows - 2 && mp_last != NULL 2448 && mp_last->sb_prev != NULL; ++i) 2449 mp_last = msg_sb_start(mp_last->sb_prev); 2450 } 2451 2452 State = ASKMORE; 2453 #ifdef FEAT_MOUSE 2454 setmouse(); 2455 #endif 2456 if (typed_char == NUL) 2457 msg_moremsg(FALSE); 2458 for (;;) 2459 { 2460 /* 2461 * Get a typed character directly from the user. 2462 */ 2463 if (used_typed_char != NUL) 2464 { 2465 c = used_typed_char; /* was typed at hit-enter prompt */ 2466 used_typed_char = NUL; 2467 } 2468 else 2469 c = get_keystroke(); 2470 2471 #if defined(FEAT_MENU) && defined(FEAT_GUI) 2472 if (c == K_MENU) 2473 { 2474 int idx = get_menu_index(current_menu, ASKMORE); 2475 2476 /* Used a menu. If it starts with CTRL-Y, it must 2477 * be a "Copy" for the clipboard. Otherwise 2478 * assume that we end */ 2479 if (idx == MENU_INDEX_INVALID) 2480 continue; 2481 c = *current_menu->strings[idx]; 2482 if (c != NUL && current_menu->strings[idx][1] != NUL) 2483 ins_typebuf(current_menu->strings[idx] + 1, 2484 current_menu->noremap[idx], 0, TRUE, 2485 current_menu->silent[idx]); 2486 } 2487 #endif 2488 2489 toscroll = 0; 2490 switch (c) 2491 { 2492 case BS: /* scroll one line back */ 2493 case K_BS: 2494 case 'k': 2495 case K_UP: 2496 toscroll = -1; 2497 break; 2498 2499 case CAR: /* one extra line */ 2500 case NL: 2501 case 'j': 2502 case K_DOWN: 2503 toscroll = 1; 2504 break; 2505 2506 case 'u': /* Up half a page */ 2507 toscroll = -(Rows / 2); 2508 break; 2509 2510 case 'd': /* Down half a page */ 2511 toscroll = Rows / 2; 2512 break; 2513 2514 case 'b': /* one page back */ 2515 case K_PAGEUP: 2516 toscroll = -(Rows - 1); 2517 break; 2518 2519 case ' ': /* one extra page */ 2520 case 'f': 2521 case K_PAGEDOWN: 2522 case K_LEFTMOUSE: 2523 toscroll = Rows - 1; 2524 break; 2525 2526 case 'g': /* all the way back to the start */ 2527 toscroll = -999999; 2528 break; 2529 2530 case 'G': /* all the way to the end */ 2531 toscroll = 999999; 2532 lines_left = 999999; 2533 break; 2534 2535 case ':': /* start new command line */ 2536 #ifdef FEAT_CON_DIALOG 2537 if (!confirm_msg_used) 2538 #endif 2539 { 2540 /* Since got_int is set all typeahead will be flushed, but we 2541 * want to keep this ':', remember that in a special way. */ 2542 typeahead_noflush(':'); 2543 cmdline_row = Rows - 1; /* put ':' on this line */ 2544 skip_redraw = TRUE; /* skip redraw once */ 2545 need_wait_return = FALSE; /* don't wait in main() */ 2546 } 2547 /*FALLTHROUGH*/ 2548 case 'q': /* quit */ 2549 case Ctrl_C: 2550 case ESC: 2551 #ifdef FEAT_CON_DIALOG 2552 if (confirm_msg_used) 2553 { 2554 /* Jump to the choices of the dialog. */ 2555 retval = TRUE; 2556 } 2557 else 2558 #endif 2559 { 2560 got_int = TRUE; 2561 quit_more = TRUE; 2562 } 2563 /* When there is some more output (wrapping line) display that 2564 * without another prompt. */ 2565 lines_left = Rows - 1; 2566 break; 2567 2568 #ifdef FEAT_CLIPBOARD 2569 case Ctrl_Y: 2570 /* Strange way to allow copying (yanking) a modeless 2571 * selection at the more prompt. Use CTRL-Y, 2572 * because the same is used in Cmdline-mode and at the 2573 * hit-enter prompt. However, scrolling one line up 2574 * might be expected... */ 2575 if (clip_star.state == SELECT_DONE) 2576 clip_copy_modeless_selection(TRUE); 2577 continue; 2578 #endif 2579 default: /* no valid response */ 2580 msg_moremsg(TRUE); 2581 continue; 2582 } 2583 2584 if (toscroll != 0) 2585 { 2586 if (toscroll < 0) 2587 { 2588 /* go to start of last line */ 2589 if (mp_last == NULL) 2590 mp = msg_sb_start(last_msgchunk); 2591 else if (mp_last->sb_prev != NULL) 2592 mp = msg_sb_start(mp_last->sb_prev); 2593 else 2594 mp = NULL; 2595 2596 /* go to start of line at top of the screen */ 2597 for (i = 0; i < Rows - 2 && mp != NULL && mp->sb_prev != NULL; 2598 ++i) 2599 mp = msg_sb_start(mp->sb_prev); 2600 2601 if (mp != NULL && mp->sb_prev != NULL) 2602 { 2603 /* Find line to be displayed at top. */ 2604 for (i = 0; i > toscroll; --i) 2605 { 2606 if (mp == NULL || mp->sb_prev == NULL) 2607 break; 2608 mp = msg_sb_start(mp->sb_prev); 2609 if (mp_last == NULL) 2610 mp_last = msg_sb_start(last_msgchunk); 2611 else 2612 mp_last = msg_sb_start(mp_last->sb_prev); 2613 } 2614 2615 if (toscroll == -1 && screen_ins_lines(0, 0, 1, 2616 (int)Rows, NULL) == OK) 2617 { 2618 /* display line at top */ 2619 (void)disp_sb_line(0, mp); 2620 } 2621 else 2622 { 2623 /* redisplay all lines */ 2624 screenclear(); 2625 for (i = 0; mp != NULL && i < Rows - 1; ++i) 2626 { 2627 mp = disp_sb_line(i, mp); 2628 ++msg_scrolled; 2629 } 2630 } 2631 toscroll = 0; 2632 } 2633 } 2634 else 2635 { 2636 /* First display any text that we scrolled back. */ 2637 while (toscroll > 0 && mp_last != NULL) 2638 { 2639 /* scroll up, display line at bottom */ 2640 msg_scroll_up(); 2641 inc_msg_scrolled(); 2642 screen_fill((int)Rows - 2, (int)Rows - 1, 0, 2643 (int)Columns, ' ', ' ', 0); 2644 mp_last = disp_sb_line((int)Rows - 2, mp_last); 2645 --toscroll; 2646 } 2647 } 2648 2649 if (toscroll <= 0) 2650 { 2651 /* displayed the requested text, more prompt again */ 2652 screen_fill((int)Rows - 1, (int)Rows, 0, 2653 (int)Columns, ' ', ' ', 0); 2654 msg_moremsg(FALSE); 2655 continue; 2656 } 2657 2658 /* display more text, return to caller */ 2659 lines_left = toscroll; 2660 } 2661 2662 break; 2663 } 2664 2665 /* clear the --more-- message */ 2666 screen_fill((int)Rows - 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2667 State = oldState; 2668 #ifdef FEAT_MOUSE 2669 setmouse(); 2670 #endif 2671 if (quit_more) 2672 { 2673 msg_row = Rows - 1; 2674 msg_col = 0; 2675 } 2676 #ifdef FEAT_RIGHTLEFT 2677 else if (cmdmsg_rl) 2678 msg_col = Columns - 1; 2679 #endif 2680 2681 #ifdef FEAT_CON_DIALOG 2682 return retval; 2683 #else 2684 return FALSE; 2685 #endif 2686 } 2687 2688 #if defined(USE_MCH_ERRMSG) || defined(PROTO) 2689 2690 #ifdef mch_errmsg 2691 # undef mch_errmsg 2692 #endif 2693 #ifdef mch_msg 2694 # undef mch_msg 2695 #endif 2696 2697 /* 2698 * Give an error message. To be used when the screen hasn't been initialized 2699 * yet. When stderr can't be used, collect error messages until the GUI has 2700 * started and they can be displayed in a message box. 2701 */ 2702 void 2703 mch_errmsg(char *str) 2704 { 2705 int len; 2706 2707 #if (defined(UNIX) || defined(FEAT_GUI)) && !defined(ALWAYS_USE_GUI) 2708 /* On Unix use stderr if it's a tty. 2709 * When not going to start the GUI also use stderr. 2710 * On Mac, when started from Finder, stderr is the console. */ 2711 if ( 2712 # ifdef UNIX 2713 # ifdef MACOS_X_UNIX 2714 (isatty(2) && strcmp("/dev/console", ttyname(2)) != 0) 2715 # else 2716 isatty(2) 2717 # endif 2718 # ifdef FEAT_GUI 2719 || 2720 # endif 2721 # endif 2722 # ifdef FEAT_GUI 2723 !(gui.in_use || gui.starting) 2724 # endif 2725 ) 2726 { 2727 fprintf(stderr, "%s", str); 2728 return; 2729 } 2730 #endif 2731 2732 /* avoid a delay for a message that isn't there */ 2733 emsg_on_display = FALSE; 2734 2735 len = (int)STRLEN(str) + 1; 2736 if (error_ga.ga_growsize == 0) 2737 { 2738 error_ga.ga_growsize = 80; 2739 error_ga.ga_itemsize = 1; 2740 } 2741 if (ga_grow(&error_ga, len) == OK) 2742 { 2743 mch_memmove((char_u *)error_ga.ga_data + error_ga.ga_len, 2744 (char_u *)str, len); 2745 #ifdef UNIX 2746 /* remove CR characters, they are displayed */ 2747 { 2748 char_u *p; 2749 2750 p = (char_u *)error_ga.ga_data + error_ga.ga_len; 2751 for (;;) 2752 { 2753 p = vim_strchr(p, '\r'); 2754 if (p == NULL) 2755 break; 2756 *p = ' '; 2757 } 2758 } 2759 #endif 2760 --len; /* don't count the NUL at the end */ 2761 error_ga.ga_len += len; 2762 } 2763 } 2764 2765 /* 2766 * Give a message. To be used when the screen hasn't been initialized yet. 2767 * When there is no tty, collect messages until the GUI has started and they 2768 * can be displayed in a message box. 2769 */ 2770 void 2771 mch_msg(char *str) 2772 { 2773 #if (defined(UNIX) || defined(FEAT_GUI)) && !defined(ALWAYS_USE_GUI) 2774 /* On Unix use stdout if we have a tty. This allows "vim -h | more" and 2775 * uses mch_errmsg() when started from the desktop. 2776 * When not going to start the GUI also use stdout. 2777 * On Mac, when started from Finder, stderr is the console. */ 2778 if ( 2779 # ifdef UNIX 2780 # ifdef MACOS_X_UNIX 2781 (isatty(2) && strcmp("/dev/console", ttyname(2)) != 0) 2782 # else 2783 isatty(2) 2784 # endif 2785 # ifdef FEAT_GUI 2786 || 2787 # endif 2788 # endif 2789 # ifdef FEAT_GUI 2790 !(gui.in_use || gui.starting) 2791 # endif 2792 ) 2793 { 2794 printf("%s", str); 2795 return; 2796 } 2797 # endif 2798 mch_errmsg(str); 2799 } 2800 #endif /* USE_MCH_ERRMSG */ 2801 2802 /* 2803 * Put a character on the screen at the current message position and advance 2804 * to the next position. Only for printable ASCII! 2805 */ 2806 static void 2807 msg_screen_putchar(int c, int attr) 2808 { 2809 msg_didout = TRUE; /* remember that line is not empty */ 2810 screen_putchar(c, msg_row, msg_col, attr); 2811 #ifdef FEAT_RIGHTLEFT 2812 if (cmdmsg_rl) 2813 { 2814 if (--msg_col == 0) 2815 { 2816 msg_col = Columns; 2817 ++msg_row; 2818 } 2819 } 2820 else 2821 #endif 2822 { 2823 if (++msg_col >= Columns) 2824 { 2825 msg_col = 0; 2826 ++msg_row; 2827 } 2828 } 2829 } 2830 2831 void 2832 msg_moremsg(int full) 2833 { 2834 int attr; 2835 char_u *s = (char_u *)_("-- More --"); 2836 2837 attr = hl_attr(HLF_M); 2838 screen_puts(s, (int)Rows - 1, 0, attr); 2839 if (full) 2840 screen_puts((char_u *) 2841 _(" SPACE/d/j: screen/page/line down, b/u/k: up, q: quit "), 2842 (int)Rows - 1, vim_strsize(s), attr); 2843 } 2844 2845 /* 2846 * Repeat the message for the current mode: ASKMORE, EXTERNCMD, CONFIRM or 2847 * exmode_active. 2848 */ 2849 void 2850 repeat_message(void) 2851 { 2852 if (State == ASKMORE) 2853 { 2854 msg_moremsg(TRUE); /* display --more-- message again */ 2855 msg_row = Rows - 1; 2856 } 2857 #ifdef FEAT_CON_DIALOG 2858 else if (State == CONFIRM) 2859 { 2860 display_confirm_msg(); /* display ":confirm" message again */ 2861 msg_row = Rows - 1; 2862 } 2863 #endif 2864 else if (State == EXTERNCMD) 2865 { 2866 windgoto(msg_row, msg_col); /* put cursor back */ 2867 } 2868 else if (State == HITRETURN || State == SETWSIZE) 2869 { 2870 if (msg_row == Rows - 1) 2871 { 2872 /* Avoid drawing the "hit-enter" prompt below the previous one, 2873 * overwrite it. Esp. useful when regaining focus and a 2874 * FocusGained autocmd exists but didn't draw anything. */ 2875 msg_didout = FALSE; 2876 msg_col = 0; 2877 msg_clr_eos(); 2878 } 2879 hit_return_msg(); 2880 msg_row = Rows - 1; 2881 } 2882 } 2883 2884 /* 2885 * msg_check_screen - check if the screen is initialized. 2886 * Also check msg_row and msg_col, if they are too big it may cause a crash. 2887 * While starting the GUI the terminal codes will be set for the GUI, but the 2888 * output goes to the terminal. Don't use the terminal codes then. 2889 */ 2890 static int 2891 msg_check_screen(void) 2892 { 2893 if (!full_screen || !screen_valid(FALSE)) 2894 return FALSE; 2895 2896 if (msg_row >= Rows) 2897 msg_row = Rows - 1; 2898 if (msg_col >= Columns) 2899 msg_col = Columns - 1; 2900 return TRUE; 2901 } 2902 2903 /* 2904 * Clear from current message position to end of screen. 2905 * Skip this when ":silent" was used, no need to clear for redirection. 2906 */ 2907 void 2908 msg_clr_eos(void) 2909 { 2910 if (msg_silent == 0) 2911 msg_clr_eos_force(); 2912 } 2913 2914 /* 2915 * Clear from current message position to end of screen. 2916 * Note: msg_col is not updated, so we remember the end of the message 2917 * for msg_check(). 2918 */ 2919 void 2920 msg_clr_eos_force(void) 2921 { 2922 if (msg_use_printf()) 2923 { 2924 if (full_screen) /* only when termcap codes are valid */ 2925 { 2926 if (*T_CD) 2927 out_str(T_CD); /* clear to end of display */ 2928 else if (*T_CE) 2929 out_str(T_CE); /* clear to end of line */ 2930 } 2931 } 2932 else 2933 { 2934 #ifdef FEAT_RIGHTLEFT 2935 if (cmdmsg_rl) 2936 { 2937 screen_fill(msg_row, msg_row + 1, 0, msg_col + 1, ' ', ' ', 0); 2938 screen_fill(msg_row + 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2939 } 2940 else 2941 #endif 2942 { 2943 screen_fill(msg_row, msg_row + 1, msg_col, (int)Columns, 2944 ' ', ' ', 0); 2945 screen_fill(msg_row + 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0); 2946 } 2947 } 2948 } 2949 2950 /* 2951 * Clear the command line. 2952 */ 2953 void 2954 msg_clr_cmdline(void) 2955 { 2956 msg_row = cmdline_row; 2957 msg_col = 0; 2958 msg_clr_eos_force(); 2959 } 2960 2961 /* 2962 * end putting a message on the screen 2963 * call wait_return if the message does not fit in the available space 2964 * return TRUE if wait_return not called. 2965 */ 2966 int 2967 msg_end(void) 2968 { 2969 /* 2970 * If the string is larger than the window, 2971 * or the ruler option is set and we run into it, 2972 * we have to redraw the window. 2973 * Do not do this if we are abandoning the file or editing the command line. 2974 */ 2975 if (!exiting && need_wait_return && !(State & CMDLINE)) 2976 { 2977 wait_return(FALSE); 2978 return FALSE; 2979 } 2980 out_flush(); 2981 return TRUE; 2982 } 2983 2984 /* 2985 * If the written message runs into the shown command or ruler, we have to 2986 * wait for hit-return and redraw the window later. 2987 */ 2988 void 2989 msg_check(void) 2990 { 2991 if (msg_row == Rows - 1 && msg_col >= sc_col) 2992 { 2993 need_wait_return = TRUE; 2994 redraw_cmdline = TRUE; 2995 } 2996 } 2997 2998 /* 2999 * May write a string to the redirection file. 3000 * When "maxlen" is -1 write the whole string, otherwise up to "maxlen" bytes. 3001 */ 3002 static void 3003 redir_write(char_u *str, int maxlen) 3004 { 3005 char_u *s = str; 3006 static int cur_col = 0; 3007 3008 /* Don't do anything for displaying prompts and the like. */ 3009 if (redir_off) 3010 return; 3011 3012 /* If 'verbosefile' is set prepare for writing in that file. */ 3013 if (*p_vfile != NUL && verbose_fd == NULL) 3014 verbose_open(); 3015 3016 if (redirecting()) 3017 { 3018 /* If the string doesn't start with CR or NL, go to msg_col */ 3019 if (*s != '\n' && *s != '\r') 3020 { 3021 while (cur_col < msg_col) 3022 { 3023 #ifdef FEAT_EVAL 3024 if (redir_reg) 3025 write_reg_contents(redir_reg, (char_u *)" ", -1, TRUE); 3026 else if (redir_vname) 3027 var_redir_str((char_u *)" ", -1); 3028 else 3029 #endif 3030 if (redir_fd != NULL) 3031 fputs(" ", redir_fd); 3032 if (verbose_fd != NULL) 3033 fputs(" ", verbose_fd); 3034 ++cur_col; 3035 } 3036 } 3037 3038 #ifdef FEAT_EVAL 3039 if (redir_reg) 3040 write_reg_contents(redir_reg, s, maxlen, TRUE); 3041 if (redir_vname) 3042 var_redir_str(s, maxlen); 3043 #endif 3044 3045 /* Write and adjust the current column. */ 3046 while (*s != NUL && (maxlen < 0 || (int)(s - str) < maxlen)) 3047 { 3048 #ifdef FEAT_EVAL 3049 if (!redir_reg && !redir_vname) 3050 #endif 3051 if (redir_fd != NULL) 3052 putc(*s, redir_fd); 3053 if (verbose_fd != NULL) 3054 putc(*s, verbose_fd); 3055 if (*s == '\r' || *s == '\n') 3056 cur_col = 0; 3057 else if (*s == '\t') 3058 cur_col += (8 - cur_col % 8); 3059 else 3060 ++cur_col; 3061 ++s; 3062 } 3063 3064 if (msg_silent != 0) /* should update msg_col */ 3065 msg_col = cur_col; 3066 } 3067 } 3068 3069 int 3070 redirecting(void) 3071 { 3072 return redir_fd != NULL || *p_vfile != NUL 3073 #ifdef FEAT_EVAL 3074 || redir_reg || redir_vname 3075 #endif 3076 ; 3077 } 3078 3079 /* 3080 * Before giving verbose message. 3081 * Must always be called paired with verbose_leave()! 3082 */ 3083 void 3084 verbose_enter(void) 3085 { 3086 if (*p_vfile != NUL) 3087 ++msg_silent; 3088 } 3089 3090 /* 3091 * After giving verbose message. 3092 * Must always be called paired with verbose_enter()! 3093 */ 3094 void 3095 verbose_leave(void) 3096 { 3097 if (*p_vfile != NUL) 3098 if (--msg_silent < 0) 3099 msg_silent = 0; 3100 } 3101 3102 /* 3103 * Like verbose_enter() and set msg_scroll when displaying the message. 3104 */ 3105 void 3106 verbose_enter_scroll(void) 3107 { 3108 if (*p_vfile != NUL) 3109 ++msg_silent; 3110 else 3111 /* always scroll up, don't overwrite */ 3112 msg_scroll = TRUE; 3113 } 3114 3115 /* 3116 * Like verbose_leave() and set cmdline_row when displaying the message. 3117 */ 3118 void 3119 verbose_leave_scroll(void) 3120 { 3121 if (*p_vfile != NUL) 3122 { 3123 if (--msg_silent < 0) 3124 msg_silent = 0; 3125 } 3126 else 3127 cmdline_row = msg_row; 3128 } 3129 3130 /* 3131 * Called when 'verbosefile' is set: stop writing to the file. 3132 */ 3133 void 3134 verbose_stop(void) 3135 { 3136 if (verbose_fd != NULL) 3137 { 3138 fclose(verbose_fd); 3139 verbose_fd = NULL; 3140 } 3141 verbose_did_open = FALSE; 3142 } 3143 3144 /* 3145 * Open the file 'verbosefile'. 3146 * Return FAIL or OK. 3147 */ 3148 int 3149 verbose_open(void) 3150 { 3151 if (verbose_fd == NULL && !verbose_did_open) 3152 { 3153 /* Only give the error message once. */ 3154 verbose_did_open = TRUE; 3155 3156 verbose_fd = mch_fopen((char *)p_vfile, "a"); 3157 if (verbose_fd == NULL) 3158 { 3159 EMSG2(_(e_notopen), p_vfile); 3160 return FAIL; 3161 } 3162 } 3163 return OK; 3164 } 3165 3166 /* 3167 * Give a warning message (for searching). 3168 * Use 'w' highlighting and may repeat the message after redrawing 3169 */ 3170 void 3171 give_warning(char_u *message, int hl) 3172 { 3173 /* Don't do this for ":silent". */ 3174 if (msg_silent != 0) 3175 return; 3176 3177 /* Don't want a hit-enter prompt here. */ 3178 ++no_wait_return; 3179 3180 #ifdef FEAT_EVAL 3181 set_vim_var_string(VV_WARNINGMSG, message, -1); 3182 #endif 3183 vim_free(keep_msg); 3184 keep_msg = NULL; 3185 if (hl) 3186 keep_msg_attr = hl_attr(HLF_W); 3187 else 3188 keep_msg_attr = 0; 3189 if (msg_attr(message, keep_msg_attr) && msg_scrolled == 0) 3190 set_keep_msg(message, keep_msg_attr); 3191 msg_didout = FALSE; /* overwrite this message */ 3192 msg_nowait = TRUE; /* don't wait for this message */ 3193 msg_col = 0; 3194 3195 --no_wait_return; 3196 } 3197 3198 /* 3199 * Advance msg cursor to column "col". 3200 */ 3201 void 3202 msg_advance(int col) 3203 { 3204 if (msg_silent != 0) /* nothing to advance to */ 3205 { 3206 msg_col = col; /* for redirection, may fill it up later */ 3207 return; 3208 } 3209 if (col >= Columns) /* not enough room */ 3210 col = Columns - 1; 3211 #ifdef FEAT_RIGHTLEFT 3212 if (cmdmsg_rl) 3213 while (msg_col > Columns - col) 3214 msg_putchar(' '); 3215 else 3216 #endif 3217 while (msg_col < col) 3218 msg_putchar(' '); 3219 } 3220 3221 #if defined(FEAT_CON_DIALOG) || defined(PROTO) 3222 /* 3223 * Used for "confirm()" function, and the :confirm command prefix. 3224 * Versions which haven't got flexible dialogs yet, and console 3225 * versions, get this generic handler which uses the command line. 3226 * 3227 * type = one of: 3228 * VIM_QUESTION, VIM_INFO, VIM_WARNING, VIM_ERROR or VIM_GENERIC 3229 * title = title string (can be NULL for default) 3230 * (neither used in console dialogs at the moment) 3231 * 3232 * Format of the "buttons" string: 3233 * "Button1Name\nButton2Name\nButton3Name" 3234 * The first button should normally be the default/accept 3235 * The second button should be the 'Cancel' button 3236 * Other buttons- use your imagination! 3237 * A '&' in a button name becomes a shortcut, so each '&' should be before a 3238 * different letter. 3239 */ 3240 int 3241 do_dialog( 3242 int type UNUSED, 3243 char_u *title UNUSED, 3244 char_u *message, 3245 char_u *buttons, 3246 int dfltbutton, 3247 char_u *textfield UNUSED, /* IObuff for inputdialog(), NULL 3248 otherwise */ 3249 int ex_cmd) /* when TRUE pressing : accepts default and starts 3250 Ex command */ 3251 { 3252 int oldState; 3253 int retval = 0; 3254 char_u *hotkeys; 3255 int c; 3256 int i; 3257 3258 #ifndef NO_CONSOLE 3259 /* Don't output anything in silent mode ("ex -s") */ 3260 if (silent_mode) 3261 return dfltbutton; /* return default option */ 3262 #endif 3263 3264 #ifdef FEAT_GUI_DIALOG 3265 /* When GUI is running and 'c' not in 'guioptions', use the GUI dialog */ 3266 if (gui.in_use && vim_strchr(p_go, GO_CONDIALOG) == NULL) 3267 { 3268 c = gui_mch_dialog(type, title, message, buttons, dfltbutton, 3269 textfield, ex_cmd); 3270 /* avoid a hit-enter prompt without clearing the cmdline */ 3271 need_wait_return = FALSE; 3272 emsg_on_display = FALSE; 3273 cmdline_row = msg_row; 3274 3275 /* Flush output to avoid that further messages and redrawing is done 3276 * in the wrong order. */ 3277 out_flush(); 3278 gui_mch_update(); 3279 3280 return c; 3281 } 3282 #endif 3283 3284 oldState = State; 3285 State = CONFIRM; 3286 #ifdef FEAT_MOUSE 3287 setmouse(); 3288 #endif 3289 3290 /* 3291 * Since we wait for a keypress, don't make the 3292 * user press RETURN as well afterwards. 3293 */ 3294 ++no_wait_return; 3295 hotkeys = msg_show_console_dialog(message, buttons, dfltbutton); 3296 3297 if (hotkeys != NULL) 3298 { 3299 for (;;) 3300 { 3301 /* Get a typed character directly from the user. */ 3302 c = get_keystroke(); 3303 switch (c) 3304 { 3305 case CAR: /* User accepts default option */ 3306 case NL: 3307 retval = dfltbutton; 3308 break; 3309 case Ctrl_C: /* User aborts/cancels */ 3310 case ESC: 3311 retval = 0; 3312 break; 3313 default: /* Could be a hotkey? */ 3314 if (c < 0) /* special keys are ignored here */ 3315 continue; 3316 if (c == ':' && ex_cmd) 3317 { 3318 retval = dfltbutton; 3319 ins_char_typebuf(':'); 3320 break; 3321 } 3322 3323 /* Make the character lowercase, as chars in "hotkeys" are. */ 3324 c = MB_TOLOWER(c); 3325 retval = 1; 3326 for (i = 0; hotkeys[i]; ++i) 3327 { 3328 #ifdef FEAT_MBYTE 3329 if (has_mbyte) 3330 { 3331 if ((*mb_ptr2char)(hotkeys + i) == c) 3332 break; 3333 i += (*mb_ptr2len)(hotkeys + i) - 1; 3334 } 3335 else 3336 #endif 3337 if (hotkeys[i] == c) 3338 break; 3339 ++retval; 3340 } 3341 if (hotkeys[i]) 3342 break; 3343 /* No hotkey match, so keep waiting */ 3344 continue; 3345 } 3346 break; 3347 } 3348 3349 vim_free(hotkeys); 3350 } 3351 3352 State = oldState; 3353 #ifdef FEAT_MOUSE 3354 setmouse(); 3355 #endif 3356 --no_wait_return; 3357 msg_end_prompt(); 3358 3359 return retval; 3360 } 3361 3362 static int copy_char(char_u *from, char_u *to, int lowercase); 3363 3364 /* 3365 * Copy one character from "*from" to "*to", taking care of multi-byte 3366 * characters. Return the length of the character in bytes. 3367 */ 3368 static int 3369 copy_char( 3370 char_u *from, 3371 char_u *to, 3372 int lowercase) /* make character lower case */ 3373 { 3374 #ifdef FEAT_MBYTE 3375 int len; 3376 int c; 3377 3378 if (has_mbyte) 3379 { 3380 if (lowercase) 3381 { 3382 c = MB_TOLOWER((*mb_ptr2char)(from)); 3383 return (*mb_char2bytes)(c, to); 3384 } 3385 else 3386 { 3387 len = (*mb_ptr2len)(from); 3388 mch_memmove(to, from, (size_t)len); 3389 return len; 3390 } 3391 } 3392 else 3393 #endif 3394 { 3395 if (lowercase) 3396 *to = (char_u)TOLOWER_LOC(*from); 3397 else 3398 *to = *from; 3399 return 1; 3400 } 3401 } 3402 3403 /* 3404 * Format the dialog string, and display it at the bottom of 3405 * the screen. Return a string of hotkey chars (if defined) for 3406 * each 'button'. If a button has no hotkey defined, the first character of 3407 * the button is used. 3408 * The hotkeys can be multi-byte characters, but without combining chars. 3409 * 3410 * Returns an allocated string with hotkeys, or NULL for error. 3411 */ 3412 static char_u * 3413 msg_show_console_dialog( 3414 char_u *message, 3415 char_u *buttons, 3416 int dfltbutton) 3417 { 3418 int len = 0; 3419 #ifdef FEAT_MBYTE 3420 # define HOTK_LEN (has_mbyte ? MB_MAXBYTES : 1) 3421 #else 3422 # define HOTK_LEN 1 3423 #endif 3424 int lenhotkey = HOTK_LEN; /* count first button */ 3425 char_u *hotk = NULL; 3426 char_u *msgp = NULL; 3427 char_u *hotkp = NULL; 3428 char_u *r; 3429 int copy; 3430 #define HAS_HOTKEY_LEN 30 3431 char_u has_hotkey[HAS_HOTKEY_LEN]; 3432 int first_hotkey = FALSE; /* first char of button is hotkey */ 3433 int idx; 3434 3435 has_hotkey[0] = FALSE; 3436 3437 /* 3438 * First loop: compute the size of memory to allocate. 3439 * Second loop: copy to the allocated memory. 3440 */ 3441 for (copy = 0; copy <= 1; ++copy) 3442 { 3443 r = buttons; 3444 idx = 0; 3445 while (*r) 3446 { 3447 if (*r == DLG_BUTTON_SEP) 3448 { 3449 if (copy) 3450 { 3451 *msgp++ = ','; 3452 *msgp++ = ' '; /* '\n' -> ', ' */ 3453 3454 /* advance to next hotkey and set default hotkey */ 3455 #ifdef FEAT_MBYTE 3456 if (has_mbyte) 3457 hotkp += STRLEN(hotkp); 3458 else 3459 #endif 3460 ++hotkp; 3461 hotkp[copy_char(r + 1, hotkp, TRUE)] = NUL; 3462 if (dfltbutton) 3463 --dfltbutton; 3464 3465 /* If no hotkey is specified first char is used. */ 3466 if (idx < HAS_HOTKEY_LEN - 1 && !has_hotkey[++idx]) 3467 first_hotkey = TRUE; 3468 } 3469 else 3470 { 3471 len += 3; /* '\n' -> ', '; 'x' -> '(x)' */ 3472 lenhotkey += HOTK_LEN; /* each button needs a hotkey */ 3473 if (idx < HAS_HOTKEY_LEN - 1) 3474 has_hotkey[++idx] = FALSE; 3475 } 3476 } 3477 else if (*r == DLG_HOTKEY_CHAR || first_hotkey) 3478 { 3479 if (*r == DLG_HOTKEY_CHAR) 3480 ++r; 3481 first_hotkey = FALSE; 3482 if (copy) 3483 { 3484 if (*r == DLG_HOTKEY_CHAR) /* '&&a' -> '&a' */ 3485 *msgp++ = *r; 3486 else 3487 { 3488 /* '&a' -> '[a]' */ 3489 *msgp++ = (dfltbutton == 1) ? '[' : '('; 3490 msgp += copy_char(r, msgp, FALSE); 3491 *msgp++ = (dfltbutton == 1) ? ']' : ')'; 3492 3493 /* redefine hotkey */ 3494 hotkp[copy_char(r, hotkp, TRUE)] = NUL; 3495 } 3496 } 3497 else 3498 { 3499 ++len; /* '&a' -> '[a]' */ 3500 if (idx < HAS_HOTKEY_LEN - 1) 3501 has_hotkey[idx] = TRUE; 3502 } 3503 } 3504 else 3505 { 3506 /* everything else copy literally */ 3507 if (copy) 3508 msgp += copy_char(r, msgp, FALSE); 3509 } 3510 3511 /* advance to the next character */ 3512 mb_ptr_adv(r); 3513 } 3514 3515 if (copy) 3516 { 3517 *msgp++ = ':'; 3518 *msgp++ = ' '; 3519 *msgp = NUL; 3520 } 3521 else 3522 { 3523 len += (int)(STRLEN(message) 3524 + 2 /* for the NL's */ 3525 + STRLEN(buttons) 3526 + 3); /* for the ": " and NUL */ 3527 lenhotkey++; /* for the NUL */ 3528 3529 /* If no hotkey is specified first char is used. */ 3530 if (!has_hotkey[0]) 3531 { 3532 first_hotkey = TRUE; 3533 len += 2; /* "x" -> "[x]" */ 3534 } 3535 3536 /* 3537 * Now allocate and load the strings 3538 */ 3539 vim_free(confirm_msg); 3540 confirm_msg = alloc(len); 3541 if (confirm_msg == NULL) 3542 return NULL; 3543 *confirm_msg = NUL; 3544 hotk = alloc(lenhotkey); 3545 if (hotk == NULL) 3546 return NULL; 3547 3548 *confirm_msg = '\n'; 3549 STRCPY(confirm_msg + 1, message); 3550 3551 msgp = confirm_msg + 1 + STRLEN(message); 3552 hotkp = hotk; 3553 3554 /* Define first default hotkey. Keep the hotkey string NUL 3555 * terminated to avoid reading past the end. */ 3556 hotkp[copy_char(buttons, hotkp, TRUE)] = NUL; 3557 3558 /* Remember where the choices start, displaying starts here when 3559 * "hotkp" typed at the more prompt. */ 3560 confirm_msg_tail = msgp; 3561 *msgp++ = '\n'; 3562 } 3563 } 3564 3565 display_confirm_msg(); 3566 return hotk; 3567 } 3568 3569 /* 3570 * Display the ":confirm" message. Also called when screen resized. 3571 */ 3572 void 3573 display_confirm_msg(void) 3574 { 3575 /* avoid that 'q' at the more prompt truncates the message here */ 3576 ++confirm_msg_used; 3577 if (confirm_msg != NULL) 3578 msg_puts_attr(confirm_msg, hl_attr(HLF_M)); 3579 --confirm_msg_used; 3580 } 3581 3582 #endif /* FEAT_CON_DIALOG */ 3583 3584 #if defined(FEAT_CON_DIALOG) || defined(FEAT_GUI_DIALOG) 3585 3586 int 3587 vim_dialog_yesno( 3588 int type, 3589 char_u *title, 3590 char_u *message, 3591 int dflt) 3592 { 3593 if (do_dialog(type, 3594 title == NULL ? (char_u *)_("Question") : title, 3595 message, 3596 (char_u *)_("&Yes\n&No"), dflt, NULL, FALSE) == 1) 3597 return VIM_YES; 3598 return VIM_NO; 3599 } 3600 3601 int 3602 vim_dialog_yesnocancel( 3603 int type, 3604 char_u *title, 3605 char_u *message, 3606 int dflt) 3607 { 3608 switch (do_dialog(type, 3609 title == NULL ? (char_u *)_("Question") : title, 3610 message, 3611 (char_u *)_("&Yes\n&No\n&Cancel"), dflt, NULL, FALSE)) 3612 { 3613 case 1: return VIM_YES; 3614 case 2: return VIM_NO; 3615 } 3616 return VIM_CANCEL; 3617 } 3618 3619 int 3620 vim_dialog_yesnoallcancel( 3621 int type, 3622 char_u *title, 3623 char_u *message, 3624 int dflt) 3625 { 3626 switch (do_dialog(type, 3627 title == NULL ? (char_u *)"Question" : title, 3628 message, 3629 (char_u *)_("&Yes\n&No\nSave &All\n&Discard All\n&Cancel"), 3630 dflt, NULL, FALSE)) 3631 { 3632 case 1: return VIM_YES; 3633 case 2: return VIM_NO; 3634 case 3: return VIM_ALL; 3635 case 4: return VIM_DISCARDALL; 3636 } 3637 return VIM_CANCEL; 3638 } 3639 3640 #endif /* FEAT_GUI_DIALOG || FEAT_CON_DIALOG */ 3641 3642 #if defined(FEAT_BROWSE) || defined(PROTO) 3643 /* 3644 * Generic browse function. Calls gui_mch_browse() when possible. 3645 * Later this may pop-up a non-GUI file selector (external command?). 3646 */ 3647 char_u * 3648 do_browse( 3649 int flags, /* BROWSE_SAVE and BROWSE_DIR */ 3650 char_u *title, /* title for the window */ 3651 char_u *dflt, /* default file name (may include directory) */ 3652 char_u *ext, /* extension added */ 3653 char_u *initdir, /* initial directory, NULL for current dir or 3654 when using path from "dflt" */ 3655 char_u *filter, /* file name filter */ 3656 buf_T *buf) /* buffer to read/write for */ 3657 { 3658 char_u *fname; 3659 static char_u *last_dir = NULL; /* last used directory */ 3660 char_u *tofree = NULL; 3661 int save_browse = cmdmod.browse; 3662 3663 /* Must turn off browse to avoid that autocommands will get the 3664 * flag too! */ 3665 cmdmod.browse = FALSE; 3666 3667 if (title == NULL || *title == NUL) 3668 { 3669 if (flags & BROWSE_DIR) 3670 title = (char_u *)_("Select Directory dialog"); 3671 else if (flags & BROWSE_SAVE) 3672 title = (char_u *)_("Save File dialog"); 3673 else 3674 title = (char_u *)_("Open File dialog"); 3675 } 3676 3677 /* When no directory specified, use default file name, default dir, buffer 3678 * dir, last dir or current dir */ 3679 if ((initdir == NULL || *initdir == NUL) && dflt != NULL && *dflt != NUL) 3680 { 3681 if (mch_isdir(dflt)) /* default file name is a directory */ 3682 { 3683 initdir = dflt; 3684 dflt = NULL; 3685 } 3686 else if (gettail(dflt) != dflt) /* default file name includes a path */ 3687 { 3688 tofree = vim_strsave(dflt); 3689 if (tofree != NULL) 3690 { 3691 initdir = tofree; 3692 *gettail(initdir) = NUL; 3693 dflt = gettail(dflt); 3694 } 3695 } 3696 } 3697 3698 if (initdir == NULL || *initdir == NUL) 3699 { 3700 /* When 'browsedir' is a directory, use it */ 3701 if (STRCMP(p_bsdir, "last") != 0 3702 && STRCMP(p_bsdir, "buffer") != 0 3703 && STRCMP(p_bsdir, "current") != 0 3704 && mch_isdir(p_bsdir)) 3705 initdir = p_bsdir; 3706 /* When saving or 'browsedir' is "buffer", use buffer fname */ 3707 else if (((flags & BROWSE_SAVE) || *p_bsdir == 'b') 3708 && buf != NULL && buf->b_ffname != NULL) 3709 { 3710 if (dflt == NULL || *dflt == NUL) 3711 dflt = gettail(curbuf->b_ffname); 3712 tofree = vim_strsave(curbuf->b_ffname); 3713 if (tofree != NULL) 3714 { 3715 initdir = tofree; 3716 *gettail(initdir) = NUL; 3717 } 3718 } 3719 /* When 'browsedir' is "last", use dir from last browse */ 3720 else if (*p_bsdir == 'l') 3721 initdir = last_dir; 3722 /* When 'browsedir is "current", use current directory. This is the 3723 * default already, leave initdir empty. */ 3724 } 3725 3726 # ifdef FEAT_GUI 3727 if (gui.in_use) /* when this changes, also adjust f_has()! */ 3728 { 3729 if (filter == NULL 3730 # ifdef FEAT_EVAL 3731 && (filter = get_var_value((char_u *)"b:browsefilter")) == NULL 3732 && (filter = get_var_value((char_u *)"g:browsefilter")) == NULL 3733 # endif 3734 ) 3735 filter = BROWSE_FILTER_DEFAULT; 3736 if (flags & BROWSE_DIR) 3737 { 3738 # if defined(FEAT_GUI_GTK) || defined(WIN3264) 3739 /* For systems that have a directory dialog. */ 3740 fname = gui_mch_browsedir(title, initdir); 3741 # else 3742 /* Generic solution for selecting a directory: select a file and 3743 * remove the file name. */ 3744 fname = gui_mch_browse(0, title, dflt, ext, initdir, (char_u *)""); 3745 # endif 3746 # if !defined(FEAT_GUI_GTK) 3747 /* Win32 adds a dummy file name, others return an arbitrary file 3748 * name. GTK+ 2 returns only the directory, */ 3749 if (fname != NULL && *fname != NUL && !mch_isdir(fname)) 3750 { 3751 /* Remove the file name. */ 3752 char_u *tail = gettail_sep(fname); 3753 3754 if (tail == fname) 3755 *tail++ = '.'; /* use current dir */ 3756 *tail = NUL; 3757 } 3758 # endif 3759 } 3760 else 3761 fname = gui_mch_browse(flags & BROWSE_SAVE, 3762 title, dflt, ext, initdir, filter); 3763 3764 /* We hang around in the dialog for a while, the user might do some 3765 * things to our files. The Win32 dialog allows deleting or renaming 3766 * a file, check timestamps. */ 3767 need_check_timestamps = TRUE; 3768 did_check_timestamps = FALSE; 3769 } 3770 else 3771 # endif 3772 { 3773 /* TODO: non-GUI file selector here */ 3774 EMSG(_("E338: Sorry, no file browser in console mode")); 3775 fname = NULL; 3776 } 3777 3778 /* keep the directory for next time */ 3779 if (fname != NULL) 3780 { 3781 vim_free(last_dir); 3782 last_dir = vim_strsave(fname); 3783 if (last_dir != NULL && !(flags & BROWSE_DIR)) 3784 { 3785 *gettail(last_dir) = NUL; 3786 if (*last_dir == NUL) 3787 { 3788 /* filename only returned, must be in current dir */ 3789 vim_free(last_dir); 3790 last_dir = alloc(MAXPATHL); 3791 if (last_dir != NULL) 3792 mch_dirname(last_dir, MAXPATHL); 3793 } 3794 } 3795 } 3796 3797 vim_free(tofree); 3798 cmdmod.browse = save_browse; 3799 3800 return fname; 3801 } 3802 #endif 3803 3804 #if defined(FEAT_EVAL) 3805 static char *e_printf = N_("E766: Insufficient arguments for printf()"); 3806 3807 static long tv_nr(typval_T *tvs, int *idxp); 3808 static char *tv_str(typval_T *tvs, int *idxp); 3809 # ifdef FEAT_FLOAT 3810 static double tv_float(typval_T *tvs, int *idxp); 3811 # endif 3812 3813 /* 3814 * Get number argument from "idxp" entry in "tvs". First entry is 1. 3815 */ 3816 static long 3817 tv_nr(typval_T *tvs, int *idxp) 3818 { 3819 int idx = *idxp - 1; 3820 long n = 0; 3821 int err = FALSE; 3822 3823 if (tvs[idx].v_type == VAR_UNKNOWN) 3824 EMSG(_(e_printf)); 3825 else 3826 { 3827 ++*idxp; 3828 n = get_tv_number_chk(&tvs[idx], &err); 3829 if (err) 3830 n = 0; 3831 } 3832 return n; 3833 } 3834 3835 /* 3836 * Get string argument from "idxp" entry in "tvs". First entry is 1. 3837 * Returns NULL for an error. 3838 */ 3839 static char * 3840 tv_str(typval_T *tvs, int *idxp) 3841 { 3842 int idx = *idxp - 1; 3843 char *s = NULL; 3844 3845 if (tvs[idx].v_type == VAR_UNKNOWN) 3846 EMSG(_(e_printf)); 3847 else 3848 { 3849 ++*idxp; 3850 s = (char *)get_tv_string_chk(&tvs[idx]); 3851 } 3852 return s; 3853 } 3854 3855 # ifdef FEAT_FLOAT 3856 /* 3857 * Get float argument from "idxp" entry in "tvs". First entry is 1. 3858 */ 3859 static double 3860 tv_float(typval_T *tvs, int *idxp) 3861 { 3862 int idx = *idxp - 1; 3863 double f = 0; 3864 3865 if (tvs[idx].v_type == VAR_UNKNOWN) 3866 EMSG(_(e_printf)); 3867 else 3868 { 3869 ++*idxp; 3870 if (tvs[idx].v_type == VAR_FLOAT) 3871 f = tvs[idx].vval.v_float; 3872 else if (tvs[idx].v_type == VAR_NUMBER) 3873 f = tvs[idx].vval.v_number; 3874 else 3875 EMSG(_("E807: Expected Float argument for printf()")); 3876 } 3877 return f; 3878 } 3879 # endif 3880 #endif 3881 3882 /* 3883 * This code was included to provide a portable vsnprintf() and snprintf(). 3884 * Some systems may provide their own, but we always use this one for 3885 * consistency. 3886 * 3887 * This code is based on snprintf.c - a portable implementation of snprintf 3888 * by Mark Martinec <[email protected]>, Version 2.2, 2000-10-06. 3889 * Included with permission. It was heavily modified to fit in Vim. 3890 * The original code, including useful comments, can be found here: 3891 * http://www.ijs.si/software/snprintf/ 3892 * 3893 * This snprintf() only supports the following conversion specifiers: 3894 * s, c, d, u, o, x, X, p (and synonyms: i, D, U, O - see below) 3895 * with flags: '-', '+', ' ', '0' and '#'. 3896 * An asterisk is supported for field width as well as precision. 3897 * 3898 * Limited support for floating point was added: 'f', 'e', 'E', 'g', 'G'. 3899 * 3900 * Length modifiers 'h' (short int) and 'l' (long int) are supported. 3901 * 'll' (long long int) is not supported. 3902 * 3903 * The locale is not used, the string is used as a byte string. This is only 3904 * relevant for double-byte encodings where the second byte may be '%'. 3905 * 3906 * It is permitted for "str_m" to be zero, and it is permitted to specify NULL 3907 * pointer for resulting string argument if "str_m" is zero (as per ISO C99). 3908 * 3909 * The return value is the number of characters which would be generated 3910 * for the given input, excluding the trailing NUL. If this value 3911 * is greater or equal to "str_m", not all characters from the result 3912 * have been stored in str, output bytes beyond the ("str_m"-1) -th character 3913 * are discarded. If "str_m" is greater than zero it is guaranteed 3914 * the resulting string will be NUL-terminated. 3915 */ 3916 3917 /* 3918 * When va_list is not supported we only define vim_snprintf(). 3919 * 3920 * vim_vsnprintf() can be invoked with either "va_list" or a list of 3921 * "typval_T". When the latter is not used it must be NULL. 3922 */ 3923 3924 /* When generating prototypes all of this is skipped, cproto doesn't 3925 * understand this. */ 3926 #ifndef PROTO 3927 3928 /* Like vim_vsnprintf() but append to the string. */ 3929 int 3930 vim_snprintf_add(char *str, size_t str_m, char *fmt, ...) 3931 { 3932 va_list ap; 3933 int str_l; 3934 size_t len = STRLEN(str); 3935 size_t space; 3936 3937 if (str_m <= len) 3938 space = 0; 3939 else 3940 space = str_m - len; 3941 va_start(ap, fmt); 3942 str_l = vim_vsnprintf(str + len, space, fmt, ap, NULL); 3943 va_end(ap); 3944 return str_l; 3945 } 3946 3947 int 3948 vim_snprintf(char *str, size_t str_m, char *fmt, ...) 3949 { 3950 va_list ap; 3951 int str_l; 3952 3953 va_start(ap, fmt); 3954 str_l = vim_vsnprintf(str, str_m, fmt, ap, NULL); 3955 va_end(ap); 3956 return str_l; 3957 } 3958 3959 int 3960 vim_vsnprintf( 3961 char *str, 3962 size_t str_m, 3963 char *fmt, 3964 va_list ap, 3965 typval_T *tvs) 3966 { 3967 size_t str_l = 0; 3968 char *p = fmt; 3969 int arg_idx = 1; 3970 3971 if (p == NULL) 3972 p = ""; 3973 while (*p != NUL) 3974 { 3975 if (*p != '%') 3976 { 3977 char *q = strchr(p + 1, '%'); 3978 size_t n = (q == NULL) ? STRLEN(p) : (size_t)(q - p); 3979 3980 /* Copy up to the next '%' or NUL without any changes. */ 3981 if (str_l < str_m) 3982 { 3983 size_t avail = str_m - str_l; 3984 3985 mch_memmove(str + str_l, p, n > avail ? avail : n); 3986 } 3987 p += n; 3988 str_l += n; 3989 } 3990 else 3991 { 3992 size_t min_field_width = 0, precision = 0; 3993 int zero_padding = 0, precision_specified = 0, justify_left = 0; 3994 int alternate_form = 0, force_sign = 0; 3995 3996 /* If both the ' ' and '+' flags appear, the ' ' flag should be 3997 * ignored. */ 3998 int space_for_positive = 1; 3999 4000 /* allowed values: \0, h, l, L */ 4001 char length_modifier = '\0'; 4002 4003 /* temporary buffer for simple numeric->string conversion */ 4004 # ifdef FEAT_FLOAT 4005 # define TMP_LEN 350 /* On my system 1e308 is the biggest number possible. 4006 * That sounds reasonable to use as the maximum 4007 * printable. */ 4008 # else 4009 # define TMP_LEN 32 4010 # endif 4011 char tmp[TMP_LEN]; 4012 4013 /* string address in case of string argument */ 4014 char *str_arg; 4015 4016 /* natural field width of arg without padding and sign */ 4017 size_t str_arg_l; 4018 4019 /* unsigned char argument value - only defined for c conversion. 4020 * N.B. standard explicitly states the char argument for the c 4021 * conversion is unsigned */ 4022 unsigned char uchar_arg; 4023 4024 /* number of zeros to be inserted for numeric conversions as 4025 * required by the precision or minimal field width */ 4026 size_t number_of_zeros_to_pad = 0; 4027 4028 /* index into tmp where zero padding is to be inserted */ 4029 size_t zero_padding_insertion_ind = 0; 4030 4031 /* current conversion specifier character */ 4032 char fmt_spec = '\0'; 4033 4034 str_arg = NULL; 4035 p++; /* skip '%' */ 4036 4037 /* parse flags */ 4038 while (*p == '0' || *p == '-' || *p == '+' || *p == ' ' 4039 || *p == '#' || *p == '\'') 4040 { 4041 switch (*p) 4042 { 4043 case '0': zero_padding = 1; break; 4044 case '-': justify_left = 1; break; 4045 case '+': force_sign = 1; space_for_positive = 0; break; 4046 case ' ': force_sign = 1; 4047 /* If both the ' ' and '+' flags appear, the ' ' 4048 * flag should be ignored */ 4049 break; 4050 case '#': alternate_form = 1; break; 4051 case '\'': break; 4052 } 4053 p++; 4054 } 4055 /* If the '0' and '-' flags both appear, the '0' flag should be 4056 * ignored. */ 4057 4058 /* parse field width */ 4059 if (*p == '*') 4060 { 4061 int j; 4062 4063 p++; 4064 j = 4065 # if defined(FEAT_EVAL) 4066 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4067 # endif 4068 va_arg(ap, int); 4069 if (j >= 0) 4070 min_field_width = j; 4071 else 4072 { 4073 min_field_width = -j; 4074 justify_left = 1; 4075 } 4076 } 4077 else if (VIM_ISDIGIT((int)(*p))) 4078 { 4079 /* size_t could be wider than unsigned int; make sure we treat 4080 * argument like common implementations do */ 4081 unsigned int uj = *p++ - '0'; 4082 4083 while (VIM_ISDIGIT((int)(*p))) 4084 uj = 10 * uj + (unsigned int)(*p++ - '0'); 4085 min_field_width = uj; 4086 } 4087 4088 /* parse precision */ 4089 if (*p == '.') 4090 { 4091 p++; 4092 precision_specified = 1; 4093 if (*p == '*') 4094 { 4095 int j; 4096 4097 j = 4098 # if defined(FEAT_EVAL) 4099 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4100 # endif 4101 va_arg(ap, int); 4102 p++; 4103 if (j >= 0) 4104 precision = j; 4105 else 4106 { 4107 precision_specified = 0; 4108 precision = 0; 4109 } 4110 } 4111 else if (VIM_ISDIGIT((int)(*p))) 4112 { 4113 /* size_t could be wider than unsigned int; make sure we 4114 * treat argument like common implementations do */ 4115 unsigned int uj = *p++ - '0'; 4116 4117 while (VIM_ISDIGIT((int)(*p))) 4118 uj = 10 * uj + (unsigned int)(*p++ - '0'); 4119 precision = uj; 4120 } 4121 } 4122 4123 /* parse 'h', 'l' and 'll' length modifiers */ 4124 if (*p == 'h' || *p == 'l') 4125 { 4126 length_modifier = *p; 4127 p++; 4128 if (length_modifier == 'l' && *p == 'l') 4129 { 4130 /* double l = long long */ 4131 length_modifier = 'l'; /* treat it as a single 'l' */ 4132 p++; 4133 } 4134 } 4135 fmt_spec = *p; 4136 4137 /* common synonyms: */ 4138 switch (fmt_spec) 4139 { 4140 case 'i': fmt_spec = 'd'; break; 4141 case 'D': fmt_spec = 'd'; length_modifier = 'l'; break; 4142 case 'U': fmt_spec = 'u'; length_modifier = 'l'; break; 4143 case 'O': fmt_spec = 'o'; length_modifier = 'l'; break; 4144 case 'F': fmt_spec = 'f'; break; 4145 default: break; 4146 } 4147 4148 /* get parameter value, do initial processing */ 4149 switch (fmt_spec) 4150 { 4151 /* '%' and 'c' behave similar to 's' regarding flags and field 4152 * widths */ 4153 case '%': 4154 case 'c': 4155 case 's': 4156 case 'S': 4157 length_modifier = '\0'; 4158 str_arg_l = 1; 4159 switch (fmt_spec) 4160 { 4161 case '%': 4162 str_arg = p; 4163 break; 4164 4165 case 'c': 4166 { 4167 int j; 4168 4169 j = 4170 # if defined(FEAT_EVAL) 4171 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4172 # endif 4173 va_arg(ap, int); 4174 /* standard demands unsigned char */ 4175 uchar_arg = (unsigned char)j; 4176 str_arg = (char *)&uchar_arg; 4177 break; 4178 } 4179 4180 case 's': 4181 case 'S': 4182 str_arg = 4183 # if defined(FEAT_EVAL) 4184 tvs != NULL ? tv_str(tvs, &arg_idx) : 4185 # endif 4186 va_arg(ap, char *); 4187 if (str_arg == NULL) 4188 { 4189 str_arg = "[NULL]"; 4190 str_arg_l = 6; 4191 } 4192 /* make sure not to address string beyond the specified 4193 * precision !!! */ 4194 else if (!precision_specified) 4195 str_arg_l = strlen(str_arg); 4196 /* truncate string if necessary as requested by precision */ 4197 else if (precision == 0) 4198 str_arg_l = 0; 4199 else 4200 { 4201 /* Don't put the #if inside memchr(), it can be a 4202 * macro. */ 4203 # if VIM_SIZEOF_INT <= 2 4204 char *q = memchr(str_arg, '\0', precision); 4205 # else 4206 /* memchr on HP does not like n > 2^31 !!! */ 4207 char *q = memchr(str_arg, '\0', 4208 precision <= (size_t)0x7fffffffL ? precision 4209 : (size_t)0x7fffffffL); 4210 # endif 4211 str_arg_l = (q == NULL) ? precision 4212 : (size_t)(q - str_arg); 4213 } 4214 # ifdef FEAT_MBYTE 4215 if (fmt_spec == 'S') 4216 { 4217 if (min_field_width != 0) 4218 min_field_width += STRLEN(str_arg) 4219 - mb_string2cells((char_u *)str_arg, -1); 4220 if (precision) 4221 { 4222 char_u *p1 = (char_u *)str_arg; 4223 size_t i; 4224 4225 for (i = 0; i < precision && *p1; i++) 4226 p1 += mb_ptr2len(p1); 4227 4228 str_arg_l = precision = p1 - (char_u *)str_arg; 4229 } 4230 } 4231 # endif 4232 break; 4233 4234 default: 4235 break; 4236 } 4237 break; 4238 4239 case 'd': case 'u': case 'o': case 'x': case 'X': case 'p': 4240 { 4241 /* NOTE: the u, o, x, X and p conversion specifiers 4242 * imply the value is unsigned; d implies a signed 4243 * value */ 4244 4245 /* 0 if numeric argument is zero (or if pointer is 4246 * NULL for 'p'), +1 if greater than zero (or nonzero 4247 * for unsigned arguments), -1 if negative (unsigned 4248 * argument is never negative) */ 4249 int arg_sign = 0; 4250 4251 /* only defined for length modifier h, or for no 4252 * length modifiers */ 4253 int int_arg = 0; 4254 unsigned int uint_arg = 0; 4255 4256 /* only defined for length modifier l */ 4257 long int long_arg = 0; 4258 unsigned long int ulong_arg = 0; 4259 4260 /* pointer argument value -only defined for p 4261 * conversion */ 4262 void *ptr_arg = NULL; 4263 4264 if (fmt_spec == 'p') 4265 { 4266 length_modifier = '\0'; 4267 ptr_arg = 4268 # if defined(FEAT_EVAL) 4269 tvs != NULL ? (void *)tv_str(tvs, &arg_idx) : 4270 # endif 4271 va_arg(ap, void *); 4272 if (ptr_arg != NULL) 4273 arg_sign = 1; 4274 } 4275 else if (fmt_spec == 'd') 4276 { 4277 /* signed */ 4278 switch (length_modifier) 4279 { 4280 case '\0': 4281 case 'h': 4282 /* char and short arguments are passed as int. */ 4283 int_arg = 4284 # if defined(FEAT_EVAL) 4285 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4286 # endif 4287 va_arg(ap, int); 4288 if (int_arg > 0) 4289 arg_sign = 1; 4290 else if (int_arg < 0) 4291 arg_sign = -1; 4292 break; 4293 case 'l': 4294 long_arg = 4295 # if defined(FEAT_EVAL) 4296 tvs != NULL ? tv_nr(tvs, &arg_idx) : 4297 # endif 4298 va_arg(ap, long int); 4299 if (long_arg > 0) 4300 arg_sign = 1; 4301 else if (long_arg < 0) 4302 arg_sign = -1; 4303 break; 4304 } 4305 } 4306 else 4307 { 4308 /* unsigned */ 4309 switch (length_modifier) 4310 { 4311 case '\0': 4312 case 'h': 4313 uint_arg = 4314 # if defined(FEAT_EVAL) 4315 tvs != NULL ? (unsigned) 4316 tv_nr(tvs, &arg_idx) : 4317 # endif 4318 va_arg(ap, unsigned int); 4319 if (uint_arg != 0) 4320 arg_sign = 1; 4321 break; 4322 case 'l': 4323 ulong_arg = 4324 # if defined(FEAT_EVAL) 4325 tvs != NULL ? (unsigned long) 4326 tv_nr(tvs, &arg_idx) : 4327 # endif 4328 va_arg(ap, unsigned long int); 4329 if (ulong_arg != 0) 4330 arg_sign = 1; 4331 break; 4332 } 4333 } 4334 4335 str_arg = tmp; 4336 str_arg_l = 0; 4337 4338 /* NOTE: 4339 * For d, i, u, o, x, and X conversions, if precision is 4340 * specified, the '0' flag should be ignored. This is so 4341 * with Solaris 2.6, Digital UNIX 4.0, HPUX 10, Linux, 4342 * FreeBSD, NetBSD; but not with Perl. 4343 */ 4344 if (precision_specified) 4345 zero_padding = 0; 4346 if (fmt_spec == 'd') 4347 { 4348 if (force_sign && arg_sign >= 0) 4349 tmp[str_arg_l++] = space_for_positive ? ' ' : '+'; 4350 /* leave negative numbers for sprintf to handle, to 4351 * avoid handling tricky cases like (short int)-32768 */ 4352 } 4353 else if (alternate_form) 4354 { 4355 if (arg_sign != 0 4356 && (fmt_spec == 'x' || fmt_spec == 'X') ) 4357 { 4358 tmp[str_arg_l++] = '0'; 4359 tmp[str_arg_l++] = fmt_spec; 4360 } 4361 /* alternate form should have no effect for p 4362 * conversion, but ... */ 4363 } 4364 4365 zero_padding_insertion_ind = str_arg_l; 4366 if (!precision_specified) 4367 precision = 1; /* default precision is 1 */ 4368 if (precision == 0 && arg_sign == 0) 4369 { 4370 /* When zero value is formatted with an explicit 4371 * precision 0, the resulting formatted string is 4372 * empty (d, i, u, o, x, X, p). */ 4373 } 4374 else 4375 { 4376 char f[5]; 4377 int f_l = 0; 4378 4379 /* construct a simple format string for sprintf */ 4380 f[f_l++] = '%'; 4381 if (!length_modifier) 4382 ; 4383 else if (length_modifier == '2') 4384 { 4385 f[f_l++] = 'l'; 4386 f[f_l++] = 'l'; 4387 } 4388 else 4389 f[f_l++] = length_modifier; 4390 f[f_l++] = fmt_spec; 4391 f[f_l++] = '\0'; 4392 4393 if (fmt_spec == 'p') 4394 str_arg_l += sprintf(tmp + str_arg_l, f, ptr_arg); 4395 else if (fmt_spec == 'd') 4396 { 4397 /* signed */ 4398 switch (length_modifier) 4399 { 4400 case '\0': 4401 case 'h': str_arg_l += sprintf( 4402 tmp + str_arg_l, f, int_arg); 4403 break; 4404 case 'l': str_arg_l += sprintf( 4405 tmp + str_arg_l, f, long_arg); 4406 break; 4407 } 4408 } 4409 else 4410 { 4411 /* unsigned */ 4412 switch (length_modifier) 4413 { 4414 case '\0': 4415 case 'h': str_arg_l += sprintf( 4416 tmp + str_arg_l, f, uint_arg); 4417 break; 4418 case 'l': str_arg_l += sprintf( 4419 tmp + str_arg_l, f, ulong_arg); 4420 break; 4421 } 4422 } 4423 4424 /* include the optional minus sign and possible 4425 * "0x" in the region before the zero padding 4426 * insertion point */ 4427 if (zero_padding_insertion_ind < str_arg_l 4428 && tmp[zero_padding_insertion_ind] == '-') 4429 zero_padding_insertion_ind++; 4430 if (zero_padding_insertion_ind + 1 < str_arg_l 4431 && tmp[zero_padding_insertion_ind] == '0' 4432 && (tmp[zero_padding_insertion_ind + 1] == 'x' 4433 || tmp[zero_padding_insertion_ind + 1] == 'X')) 4434 zero_padding_insertion_ind += 2; 4435 } 4436 4437 { 4438 size_t num_of_digits = str_arg_l 4439 - zero_padding_insertion_ind; 4440 4441 if (alternate_form && fmt_spec == 'o' 4442 /* unless zero is already the first 4443 * character */ 4444 && !(zero_padding_insertion_ind < str_arg_l 4445 && tmp[zero_padding_insertion_ind] == '0')) 4446 { 4447 /* assure leading zero for alternate-form 4448 * octal numbers */ 4449 if (!precision_specified 4450 || precision < num_of_digits + 1) 4451 { 4452 /* precision is increased to force the 4453 * first character to be zero, except if a 4454 * zero value is formatted with an 4455 * explicit precision of zero */ 4456 precision = num_of_digits + 1; 4457 precision_specified = 1; 4458 } 4459 } 4460 /* zero padding to specified precision? */ 4461 if (num_of_digits < precision) 4462 number_of_zeros_to_pad = precision - num_of_digits; 4463 } 4464 /* zero padding to specified minimal field width? */ 4465 if (!justify_left && zero_padding) 4466 { 4467 int n = (int)(min_field_width - (str_arg_l 4468 + number_of_zeros_to_pad)); 4469 if (n > 0) 4470 number_of_zeros_to_pad += n; 4471 } 4472 break; 4473 } 4474 4475 # ifdef FEAT_FLOAT 4476 case 'f': 4477 case 'e': 4478 case 'E': 4479 case 'g': 4480 case 'G': 4481 { 4482 /* Floating point. */ 4483 double f; 4484 double abs_f; 4485 char format[40]; 4486 int l; 4487 int remove_trailing_zeroes = FALSE; 4488 4489 f = 4490 # if defined(FEAT_EVAL) 4491 tvs != NULL ? tv_float(tvs, &arg_idx) : 4492 # endif 4493 va_arg(ap, double); 4494 abs_f = f < 0 ? -f : f; 4495 4496 if (fmt_spec == 'g' || fmt_spec == 'G') 4497 { 4498 /* Would be nice to use %g directly, but it prints 4499 * "1.0" as "1", we don't want that. */ 4500 if ((abs_f >= 0.001 && abs_f < 10000000.0) 4501 || abs_f == 0.0) 4502 fmt_spec = 'f'; 4503 else 4504 fmt_spec = fmt_spec == 'g' ? 'e' : 'E'; 4505 remove_trailing_zeroes = TRUE; 4506 } 4507 4508 if (fmt_spec == 'f' && 4509 # ifdef VAX 4510 abs_f > 1.0e38 4511 # else 4512 abs_f > 1.0e307 4513 # endif 4514 ) 4515 { 4516 /* Avoid a buffer overflow */ 4517 strcpy(tmp, "inf"); 4518 str_arg_l = 3; 4519 } 4520 else 4521 { 4522 format[0] = '%'; 4523 l = 1; 4524 if (precision_specified) 4525 { 4526 size_t max_prec = TMP_LEN - 10; 4527 4528 /* Make sure we don't get more digits than we 4529 * have room for. */ 4530 if (fmt_spec == 'f' && abs_f > 1.0) 4531 max_prec -= (size_t)log10(abs_f); 4532 if (precision > max_prec) 4533 precision = max_prec; 4534 l += sprintf(format + 1, ".%d", (int)precision); 4535 } 4536 format[l] = fmt_spec; 4537 format[l + 1] = NUL; 4538 str_arg_l = sprintf(tmp, format, f); 4539 4540 if (remove_trailing_zeroes) 4541 { 4542 int i; 4543 char *tp; 4544 4545 /* Using %g or %G: remove superfluous zeroes. */ 4546 if (fmt_spec == 'f') 4547 tp = tmp + str_arg_l - 1; 4548 else 4549 { 4550 tp = (char *)vim_strchr((char_u *)tmp, 4551 fmt_spec == 'e' ? 'e' : 'E'); 4552 if (tp != NULL) 4553 { 4554 /* Remove superfluous '+' and leading 4555 * zeroes from the exponent. */ 4556 if (tp[1] == '+') 4557 { 4558 /* Change "1.0e+07" to "1.0e07" */ 4559 STRMOVE(tp + 1, tp + 2); 4560 --str_arg_l; 4561 } 4562 i = (tp[1] == '-') ? 2 : 1; 4563 while (tp[i] == '0') 4564 { 4565 /* Change "1.0e07" to "1.0e7" */ 4566 STRMOVE(tp + i, tp + i + 1); 4567 --str_arg_l; 4568 } 4569 --tp; 4570 } 4571 } 4572 4573 if (tp != NULL && !precision_specified) 4574 /* Remove trailing zeroes, but keep the one 4575 * just after a dot. */ 4576 while (tp > tmp + 2 && *tp == '0' 4577 && tp[-1] != '.') 4578 { 4579 STRMOVE(tp, tp + 1); 4580 --tp; 4581 --str_arg_l; 4582 } 4583 } 4584 else 4585 { 4586 char *tp; 4587 4588 /* Be consistent: some printf("%e") use 1.0e+12 4589 * and some 1.0e+012. Remove one zero in the last 4590 * case. */ 4591 tp = (char *)vim_strchr((char_u *)tmp, 4592 fmt_spec == 'e' ? 'e' : 'E'); 4593 if (tp != NULL && (tp[1] == '+' || tp[1] == '-') 4594 && tp[2] == '0' 4595 && vim_isdigit(tp[3]) 4596 && vim_isdigit(tp[4])) 4597 { 4598 STRMOVE(tp + 2, tp + 3); 4599 --str_arg_l; 4600 } 4601 } 4602 } 4603 str_arg = tmp; 4604 break; 4605 } 4606 # endif 4607 4608 default: 4609 /* unrecognized conversion specifier, keep format string 4610 * as-is */ 4611 zero_padding = 0; /* turn zero padding off for non-numeric 4612 conversion */ 4613 justify_left = 1; 4614 min_field_width = 0; /* reset flags */ 4615 4616 /* discard the unrecognized conversion, just keep * 4617 * the unrecognized conversion character */ 4618 str_arg = p; 4619 str_arg_l = 0; 4620 if (*p != NUL) 4621 str_arg_l++; /* include invalid conversion specifier 4622 unchanged if not at end-of-string */ 4623 break; 4624 } 4625 4626 if (*p != NUL) 4627 p++; /* step over the just processed conversion specifier */ 4628 4629 /* insert padding to the left as requested by min_field_width; 4630 * this does not include the zero padding in case of numerical 4631 * conversions*/ 4632 if (!justify_left) 4633 { 4634 /* left padding with blank or zero */ 4635 int pn = (int)(min_field_width - (str_arg_l + number_of_zeros_to_pad)); 4636 4637 if (pn > 0) 4638 { 4639 if (str_l < str_m) 4640 { 4641 size_t avail = str_m - str_l; 4642 4643 vim_memset(str + str_l, zero_padding ? '0' : ' ', 4644 (size_t)pn > avail ? avail 4645 : (size_t)pn); 4646 } 4647 str_l += pn; 4648 } 4649 } 4650 4651 /* zero padding as requested by the precision or by the minimal 4652 * field width for numeric conversions required? */ 4653 if (number_of_zeros_to_pad == 0) 4654 { 4655 /* will not copy first part of numeric right now, * 4656 * force it to be copied later in its entirety */ 4657 zero_padding_insertion_ind = 0; 4658 } 4659 else 4660 { 4661 /* insert first part of numerics (sign or '0x') before zero 4662 * padding */ 4663 int zn = (int)zero_padding_insertion_ind; 4664 4665 if (zn > 0) 4666 { 4667 if (str_l < str_m) 4668 { 4669 size_t avail = str_m - str_l; 4670 4671 mch_memmove(str + str_l, str_arg, 4672 (size_t)zn > avail ? avail 4673 : (size_t)zn); 4674 } 4675 str_l += zn; 4676 } 4677 4678 /* insert zero padding as requested by the precision or min 4679 * field width */ 4680 zn = (int)number_of_zeros_to_pad; 4681 if (zn > 0) 4682 { 4683 if (str_l < str_m) 4684 { 4685 size_t avail = str_m-str_l; 4686 4687 vim_memset(str + str_l, '0', 4688 (size_t)zn > avail ? avail 4689 : (size_t)zn); 4690 } 4691 str_l += zn; 4692 } 4693 } 4694 4695 /* insert formatted string 4696 * (or as-is conversion specifier for unknown conversions) */ 4697 { 4698 int sn = (int)(str_arg_l - zero_padding_insertion_ind); 4699 4700 if (sn > 0) 4701 { 4702 if (str_l < str_m) 4703 { 4704 size_t avail = str_m - str_l; 4705 4706 mch_memmove(str + str_l, 4707 str_arg + zero_padding_insertion_ind, 4708 (size_t)sn > avail ? avail : (size_t)sn); 4709 } 4710 str_l += sn; 4711 } 4712 } 4713 4714 /* insert right padding */ 4715 if (justify_left) 4716 { 4717 /* right blank padding to the field width */ 4718 int pn = (int)(min_field_width 4719 - (str_arg_l + number_of_zeros_to_pad)); 4720 4721 if (pn > 0) 4722 { 4723 if (str_l < str_m) 4724 { 4725 size_t avail = str_m - str_l; 4726 4727 vim_memset(str + str_l, ' ', 4728 (size_t)pn > avail ? avail 4729 : (size_t)pn); 4730 } 4731 str_l += pn; 4732 } 4733 } 4734 } 4735 } 4736 4737 if (str_m > 0) 4738 { 4739 /* make sure the string is nul-terminated even at the expense of 4740 * overwriting the last character (shouldn't happen, but just in case) 4741 * */ 4742 str[str_l <= str_m - 1 ? str_l : str_m - 1] = '\0'; 4743 } 4744 4745 if (tvs != NULL && tvs[arg_idx - 1].v_type != VAR_UNKNOWN) 4746 EMSG(_("E767: Too many arguments to printf()")); 4747 4748 /* Return the number of characters formatted (excluding trailing nul 4749 * character), that is, the number of characters that would have been 4750 * written to the buffer if it were large enough. */ 4751 return (int)str_l; 4752 } 4753 4754 #endif /* PROTO */ 4755