1/* $NetBSD: terminal.c,v 1.43 2020/07/10 20:34:24 christos Exp $ */ 2 3/*- 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Christos Zoulas of Cornell University. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include "config.h" 36#if !defined(lint) && !defined(SCCSID) 37#if 0 38static char sccsid[] = "@(#)term.c 8.2 (Berkeley) 4/30/95"; 39#else 40__RCSID("$NetBSD: terminal.c,v 1.43 2020/07/10 20:34:24 christos Exp $"); 41#endif 42#endif /* not lint && not SCCSID */ 43 44/* 45 * terminal.c: Editor/termcap-curses interface 46 * We have to declare a static variable here, since the 47 * termcap putchar routine does not take an argument! 48 */ 49#include <sys/types.h> 50#include <sys/ioctl.h> 51#include <limits.h> 52#include <signal.h> 53#include <stdio.h> 54#include <stdlib.h> 55#include <string.h> 56#include <unistd.h> 57#ifdef HAVE_TERMCAP_H 58#include <termcap.h> 59#endif 60#ifdef HAVE_CURSES_H 61#include <curses.h> 62#elif HAVE_NCURSES_H 63#include <ncurses.h> 64#endif 65 66/* Solaris's term.h does horrid things. */ 67#if defined(HAVE_TERM_H) && !defined(__sun) && !defined(HAVE_TERMCAP_H) 68#include <term.h> 69#endif 70 71#ifdef _REENTRANT 72#include <pthread.h> 73#endif 74 75#include "el.h" 76#include "fcns.h" 77 78/* 79 * IMPORTANT NOTE: these routines are allowed to look at the current screen 80 * and the current position assuming that it is correct. If this is not 81 * true, then the update will be WRONG! This is (should be) a valid 82 * assumption... 83 */ 84 85#define TC_BUFSIZE ((size_t)2048) 86 87#define GoodStr(a) (el->el_terminal.t_str[a] != NULL && \ 88 el->el_terminal.t_str[a][0] != '\0') 89#define Str(a) el->el_terminal.t_str[a] 90#define Val(a) el->el_terminal.t_val[a] 91 92static const struct termcapstr { 93 const char *name; 94 const char *long_name; 95} tstr[] = { 96#define T_al 0 97 { "al", "add new blank line" }, 98#define T_bl 1 99 { "bl", "audible bell" }, 100#define T_cd 2 101 { "cd", "clear to bottom" }, 102#define T_ce 3 103 { "ce", "clear to end of line" }, 104#define T_ch 4 105 { "ch", "cursor to horiz pos" }, 106#define T_cl 5 107 { "cl", "clear screen" }, 108#define T_dc 6 109 { "dc", "delete a character" }, 110#define T_dl 7 111 { "dl", "delete a line" }, 112#define T_dm 8 113 { "dm", "start delete mode" }, 114#define T_ed 9 115 { "ed", "end delete mode" }, 116#define T_ei 10 117 { "ei", "end insert mode" }, 118#define T_fs 11 119 { "fs", "cursor from status line" }, 120#define T_ho 12 121 { "ho", "home cursor" }, 122#define T_ic 13 123 { "ic", "insert character" }, 124#define T_im 14 125 { "im", "start insert mode" }, 126#define T_ip 15 127 { "ip", "insert padding" }, 128#define T_kd 16 129 { "kd", "sends cursor down" }, 130#define T_kl 17 131 { "kl", "sends cursor left" }, 132#define T_kr 18 133 { "kr", "sends cursor right" }, 134#define T_ku 19 135 { "ku", "sends cursor up" }, 136#define T_md 20 137 { "md", "begin bold" }, 138#define T_me 21 139 { "me", "end attributes" }, 140#define T_nd 22 141 { "nd", "non destructive space" }, 142#define T_se 23 143 { "se", "end standout" }, 144#define T_so 24 145 { "so", "begin standout" }, 146#define T_ts 25 147 { "ts", "cursor to status line" }, 148#define T_up 26 149 { "up", "cursor up one" }, 150#define T_us 27 151 { "us", "begin underline" }, 152#define T_ue 28 153 { "ue", "end underline" }, 154#define T_vb 29 155 { "vb", "visible bell" }, 156#define T_DC 30 157 { "DC", "delete multiple chars" }, 158#define T_DO 31 159 { "DO", "cursor down multiple" }, 160#define T_IC 32 161 { "IC", "insert multiple chars" }, 162#define T_LE 33 163 { "LE", "cursor left multiple" }, 164#define T_RI 34 165 { "RI", "cursor right multiple" }, 166#define T_UP 35 167 { "UP", "cursor up multiple" }, 168#define T_kh 36 169 { "kh", "send cursor home" }, 170#define T_at7 37 171 { "@7", "send cursor end" }, 172#define T_kD 38 173 { "kD", "send cursor delete" }, 174#define T_str 39 175 { NULL, NULL } 176}; 177 178static const struct termcapval { 179 const char *name; 180 const char *long_name; 181} tval[] = { 182#define T_am 0 183 { "am", "has automatic margins" }, 184#define T_pt 1 185 { "pt", "has physical tabs" }, 186#define T_li 2 187 { "li", "Number of lines" }, 188#define T_co 3 189 { "co", "Number of columns" }, 190#define T_km 4 191 { "km", "Has meta key" }, 192#define T_xt 5 193 { "xt", "Tab chars destructive" }, 194#define T_xn 6 195 { "xn", "newline ignored at right margin" }, 196#define T_MT 7 197 { "MT", "Has meta key" }, /* XXX? */ 198#define T_val 8 199 { NULL, NULL, } 200}; 201/* do two or more of the attributes use me */ 202 203static void terminal_setflags(EditLine *); 204static int terminal_rebuffer_display(EditLine *); 205static void terminal_free_display(EditLine *); 206static int terminal_alloc_display(EditLine *); 207static void terminal_alloc(EditLine *, const struct termcapstr *, 208 const char *); 209static void terminal_init_arrow(EditLine *); 210static void terminal_reset_arrow(EditLine *); 211static int terminal_putc(int); 212static void terminal_tputs(EditLine *, const char *, int); 213 214#ifdef _REENTRANT 215static pthread_mutex_t terminal_mutex = PTHREAD_MUTEX_INITIALIZER; 216#endif 217static FILE *terminal_outfile = NULL; 218 219 220/* terminal_setflags(): 221 * Set the terminal capability flags 222 */ 223static void 224terminal_setflags(EditLine *el) 225{ 226 EL_FLAGS = 0; 227 if (el->el_tty.t_tabs) 228 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0; 229 230 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0; 231 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0; 232 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0; 233 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ? 234 TERM_CAN_INSERT : 0; 235 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0; 236 EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0; 237 EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0; 238 239 if (GoodStr(T_me) && GoodStr(T_ue)) 240 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ? 241 TERM_CAN_ME : 0; 242 else 243 EL_FLAGS &= ~TERM_CAN_ME; 244 if (GoodStr(T_me) && GoodStr(T_se)) 245 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ? 246 TERM_CAN_ME : 0; 247 248 249#ifdef DEBUG_SCREEN 250 if (!EL_CAN_UP) { 251 (void) fprintf(el->el_errfile, 252 "WARNING: Your terminal cannot move up.\n"); 253 (void) fprintf(el->el_errfile, 254 "Editing may be odd for long lines.\n"); 255 } 256 if (!EL_CAN_CEOL) 257 (void) fprintf(el->el_errfile, "no clear EOL capability.\n"); 258 if (!EL_CAN_DELETE) 259 (void) fprintf(el->el_errfile, "no delete char capability.\n"); 260 if (!EL_CAN_INSERT) 261 (void) fprintf(el->el_errfile, "no insert char capability.\n"); 262#endif /* DEBUG_SCREEN */ 263} 264 265/* terminal_init(): 266 * Initialize the terminal stuff 267 */ 268libedit_private int 269terminal_init(EditLine *el) 270{ 271 272 el->el_terminal.t_buf = el_calloc(TC_BUFSIZE, 273 sizeof(*el->el_terminal.t_buf)); 274 if (el->el_terminal.t_buf == NULL) 275 goto fail1; 276 el->el_terminal.t_cap = el_calloc(TC_BUFSIZE, 277 sizeof(*el->el_terminal.t_cap)); 278 if (el->el_terminal.t_cap == NULL) 279 goto fail2; 280 el->el_terminal.t_fkey = el_calloc(A_K_NKEYS, 281 sizeof(*el->el_terminal.t_fkey)); 282 if (el->el_terminal.t_fkey == NULL) 283 goto fail3; 284 el->el_terminal.t_loc = 0; 285 el->el_terminal.t_str = el_calloc(T_str, 286 sizeof(*el->el_terminal.t_str)); 287 if (el->el_terminal.t_str == NULL) 288 goto fail4; 289 el->el_terminal.t_val = el_calloc(T_val, 290 sizeof(*el->el_terminal.t_val)); 291 if (el->el_terminal.t_val == NULL) 292 goto fail5; 293 (void) terminal_set(el, NULL); 294 terminal_init_arrow(el); 295 return 0; 296fail5: 297 free(el->el_terminal.t_str); 298 el->el_terminal.t_str = NULL; 299fail4: 300 free(el->el_terminal.t_fkey); 301 el->el_terminal.t_fkey = NULL; 302fail3: 303 free(el->el_terminal.t_cap); 304 el->el_terminal.t_cap = NULL; 305fail2: 306 free(el->el_terminal.t_buf); 307 el->el_terminal.t_buf = NULL; 308fail1: 309 return -1; 310} 311 312/* terminal_end(): 313 * Clean up the terminal stuff 314 */ 315libedit_private void 316terminal_end(EditLine *el) 317{ 318 319 el_free(el->el_terminal.t_buf); 320 el->el_terminal.t_buf = NULL; 321 el_free(el->el_terminal.t_cap); 322 el->el_terminal.t_cap = NULL; 323 el->el_terminal.t_loc = 0; 324 el_free(el->el_terminal.t_str); 325 el->el_terminal.t_str = NULL; 326 el_free(el->el_terminal.t_val); 327 el->el_terminal.t_val = NULL; 328 el_free(el->el_terminal.t_fkey); 329 el->el_terminal.t_fkey = NULL; 330 terminal_free_display(el); 331} 332 333 334/* terminal_alloc(): 335 * Maintain a string pool for termcap strings 336 */ 337static void 338terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap) 339{ 340 char termbuf[TC_BUFSIZE]; 341 size_t tlen, clen; 342 char **tlist = el->el_terminal.t_str; 343 char **tmp, **str = &tlist[t - tstr]; 344 345 (void) memset(termbuf, 0, sizeof(termbuf)); 346 if (cap == NULL || *cap == '\0') { 347 *str = NULL; 348 return; 349 } else 350 clen = strlen(cap); 351 352 tlen = *str == NULL ? 0 : strlen(*str); 353 354 /* 355 * New string is shorter; no need to allocate space 356 */ 357 if (clen <= tlen) { 358 if (*str) 359 (void) strcpy(*str, cap); /* XXX strcpy is safe */ 360 return; 361 } 362 /* 363 * New string is longer; see if we have enough space to append 364 */ 365 if (el->el_terminal.t_loc + 3 < TC_BUFSIZE) { 366 /* XXX strcpy is safe */ 367 (void) strcpy(*str = &el->el_terminal.t_buf[ 368 el->el_terminal.t_loc], cap); 369 el->el_terminal.t_loc += clen + 1; /* one for \0 */ 370 return; 371 } 372 /* 373 * Compact our buffer; no need to check compaction, cause we know it 374 * fits... 375 */ 376 tlen = 0; 377 for (tmp = tlist; tmp < &tlist[T_str]; tmp++) 378 if (*tmp != NULL && **tmp != '\0' && *tmp != *str) { 379 char *ptr; 380 381 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++) 382 continue; 383 termbuf[tlen++] = '\0'; 384 } 385 memcpy(el->el_terminal.t_buf, termbuf, TC_BUFSIZE); 386 el->el_terminal.t_loc = tlen; 387 if (el->el_terminal.t_loc + 3 >= TC_BUFSIZE) { 388 (void) fprintf(el->el_errfile, 389 "Out of termcap string space.\n"); 390 return; 391 } 392 /* XXX strcpy is safe */ 393 (void) strcpy(*str = &el->el_terminal.t_buf[el->el_terminal.t_loc], 394 cap); 395 el->el_terminal.t_loc += (size_t)clen + 1; /* one for \0 */ 396 return; 397} 398 399 400/* terminal_rebuffer_display(): 401 * Rebuffer the display after the screen changed size 402 */ 403static int 404terminal_rebuffer_display(EditLine *el) 405{ 406 coord_t *c = &el->el_terminal.t_size; 407 408 terminal_free_display(el); 409 410 c->h = Val(T_co); 411 c->v = Val(T_li); 412 413 if (terminal_alloc_display(el) == -1) 414 return -1; 415 return 0; 416} 417 418static wint_t ** 419terminal_alloc_buffer(EditLine *el) 420{ 421 wint_t **b; 422 coord_t *c = &el->el_terminal.t_size; 423 int i; 424 425 b = el_calloc((size_t)(c->v + 1), sizeof(*b)); 426 if (b == NULL) 427 return NULL; 428 for (i = 0; i < c->v; i++) { 429 b[i] = el_calloc((size_t)(c->h + 1), sizeof(**b)); 430 if (b[i] == NULL) { 431 while (--i >= 0) 432 el_free(b[i]); 433 el_free(b); 434 return NULL; 435 } 436 } 437 b[c->v] = NULL; 438 return b; 439} 440 441static void 442terminal_free_buffer(wint_t ***bp) 443{ 444 wint_t **b; 445 wint_t **bufp; 446 447 if (*bp == NULL) 448 return; 449 450 b = *bp; 451 *bp = NULL; 452 453 for (bufp = b; *bufp != NULL; bufp++) 454 el_free(*bufp); 455 el_free(b); 456} 457 458/* terminal_alloc_display(): 459 * Allocate a new display. 460 */ 461static int 462terminal_alloc_display(EditLine *el) 463{ 464 el->el_display = terminal_alloc_buffer(el); 465 if (el->el_display == NULL) 466 goto done; 467 el->el_vdisplay = terminal_alloc_buffer(el); 468 if (el->el_vdisplay == NULL) 469 goto done; 470 return 0; 471done: 472 terminal_free_display(el); 473 return -1; 474} 475 476 477/* terminal_free_display(): 478 * Free the display buffers 479 */ 480static void 481terminal_free_display(EditLine *el) 482{ 483 terminal_free_buffer(&el->el_display); 484 terminal_free_buffer(&el->el_vdisplay); 485} 486 487 488/* terminal_move_to_line(): 489 * move to line <where> (first line == 0) 490 * as efficiently as possible 491 */ 492libedit_private void 493terminal_move_to_line(EditLine *el, int where) 494{ 495 int del; 496 497 if (where == el->el_cursor.v) 498 return; 499 500 if (where >= el->el_terminal.t_size.v) { 501#ifdef DEBUG_SCREEN 502 (void) fprintf(el->el_errfile, 503 "%s: where is ridiculous: %d\r\n", __func__, where); 504#endif /* DEBUG_SCREEN */ 505 return; 506 } 507 if ((del = where - el->el_cursor.v) > 0) { 508 /* 509 * We don't use DO here because some terminals are buggy 510 * if the destination is beyond bottom of the screen. 511 */ 512 for (; del > 0; del--) 513 terminal__putc(el, '\n'); 514 /* because the \n will become \r\n */ 515 el->el_cursor.h = 0; 516 } else { /* del < 0 */ 517 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up))) 518 terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del); 519 else { 520 if (GoodStr(T_up)) 521 for (; del < 0; del++) 522 terminal_tputs(el, Str(T_up), 1); 523 } 524 } 525 el->el_cursor.v = where;/* now where is here */ 526} 527 528 529/* terminal_move_to_char(): 530 * Move to the character position specified 531 */ 532libedit_private void 533terminal_move_to_char(EditLine *el, int where) 534{ 535 int del, i; 536 537mc_again: 538 if (where == el->el_cursor.h) 539 return; 540 541 if (where > el->el_terminal.t_size.h) { 542#ifdef DEBUG_SCREEN 543 (void) fprintf(el->el_errfile, 544 "%s: where is ridiculous: %d\r\n", __func__, where); 545#endif /* DEBUG_SCREEN */ 546 return; 547 } 548 if (!where) { /* if where is first column */ 549 terminal__putc(el, '\r'); /* do a CR */ 550 el->el_cursor.h = 0; 551 return; 552 } 553 del = where - el->el_cursor.h; 554 555 if ((del < -4 || del > 4) && GoodStr(T_ch)) 556 /* go there directly */ 557 terminal_tputs(el, tgoto(Str(T_ch), where, where), where); 558 else { 559 if (del > 0) { /* moving forward */ 560 if ((del > 4) && GoodStr(T_RI)) 561 terminal_tputs(el, tgoto(Str(T_RI), del, del), 562 del); 563 else { 564 /* if I can do tabs, use them */ 565 if (EL_CAN_TAB) { 566 if ((el->el_cursor.h & 0370) != 567 (where & ~0x7) 568 && (el->el_display[ 569 el->el_cursor.v][where & 0370] != 570 MB_FILL_CHAR) 571 ) { 572 /* if not within tab stop */ 573 for (i = 574 (el->el_cursor.h & 0370); 575 i < (where & ~0x7); 576 i += 8) 577 terminal__putc(el, 578 '\t'); 579 /* then tab over */ 580 el->el_cursor.h = where & ~0x7; 581 } 582 } 583 /* 584 * it's usually cheaper to just write the 585 * chars, so we do. 586 */ 587 /* 588 * NOTE THAT terminal_overwrite() WILL CHANGE 589 * el->el_cursor.h!!! 590 */ 591 terminal_overwrite(el, &el->el_display[ 592 el->el_cursor.v][el->el_cursor.h], 593 (size_t)(where - el->el_cursor.h)); 594 595 } 596 } else { /* del < 0 := moving backward */ 597 if ((-del > 4) && GoodStr(T_LE)) 598 terminal_tputs(el, tgoto(Str(T_LE), -del, -del), 599 -del); 600 else { /* can't go directly there */ 601 /* 602 * if the "cost" is greater than the "cost" 603 * from col 0 604 */ 605 if (EL_CAN_TAB ? 606 ((unsigned int)-del > 607 (((unsigned int) where >> 3) + 608 (where & 07))) 609 : (-del > where)) { 610 terminal__putc(el, '\r');/* do a CR */ 611 el->el_cursor.h = 0; 612 goto mc_again; /* and try again */ 613 } 614 for (i = 0; i < -del; i++) 615 terminal__putc(el, '\b'); 616 } 617 } 618 } 619 el->el_cursor.h = where; /* now where is here */ 620} 621 622 623/* terminal_overwrite(): 624 * Overstrike num characters 625 * Assumes MB_FILL_CHARs are present to keep the column count correct 626 */ 627libedit_private void 628terminal_overwrite(EditLine *el, const wchar_t *cp, size_t n) 629{ 630 if (n == 0) 631 return; 632 633 if (n > (size_t)el->el_terminal.t_size.h) { 634#ifdef DEBUG_SCREEN 635 (void) fprintf(el->el_errfile, 636 "%s: n is ridiculous: %zu\r\n", __func__, n); 637#endif /* DEBUG_SCREEN */ 638 return; 639 } 640 641 do { 642 /* terminal__putc() ignores any MB_FILL_CHARs */ 643 terminal__putc(el, *cp++); 644 el->el_cursor.h++; 645 } while (--n); 646 647 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */ 648 if (EL_HAS_AUTO_MARGINS) { /* yes */ 649 el->el_cursor.h = 0; 650 if (el->el_cursor.v + 1 < el->el_terminal.t_size.v) 651 el->el_cursor.v++; 652 if (EL_HAS_MAGIC_MARGINS) { 653 /* force the wrap to avoid the "magic" 654 * situation */ 655 wchar_t c; 656 if ((c = el->el_display[el->el_cursor.v] 657 [el->el_cursor.h]) != '\0') { 658 terminal_overwrite(el, &c, (size_t)1); 659 while (el->el_display[el->el_cursor.v] 660 [el->el_cursor.h] == MB_FILL_CHAR) 661 el->el_cursor.h++; 662 } else { 663 terminal__putc(el, ' '); 664 el->el_cursor.h = 1; 665 } 666 } 667 } else /* no wrap, but cursor stays on screen */ 668 el->el_cursor.h = el->el_terminal.t_size.h - 1; 669 } 670} 671 672 673/* terminal_deletechars(): 674 * Delete num characters 675 */ 676libedit_private void 677terminal_deletechars(EditLine *el, int num) 678{ 679 if (num <= 0) 680 return; 681 682 if (!EL_CAN_DELETE) { 683#ifdef DEBUG_EDIT 684 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n"); 685#endif /* DEBUG_EDIT */ 686 return; 687 } 688 if (num > el->el_terminal.t_size.h) { 689#ifdef DEBUG_SCREEN 690 (void) fprintf(el->el_errfile, 691 "%s: num is ridiculous: %d\r\n", __func__, num); 692#endif /* DEBUG_SCREEN */ 693 return; 694 } 695 if (GoodStr(T_DC)) /* if I have multiple delete */ 696 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more 697 * expen. */ 698 terminal_tputs(el, tgoto(Str(T_DC), num, num), num); 699 return; 700 } 701 if (GoodStr(T_dm)) /* if I have delete mode */ 702 terminal_tputs(el, Str(T_dm), 1); 703 704 if (GoodStr(T_dc)) /* else do one at a time */ 705 while (num--) 706 terminal_tputs(el, Str(T_dc), 1); 707 708 if (GoodStr(T_ed)) /* if I have delete mode */ 709 terminal_tputs(el, Str(T_ed), 1); 710} 711 712 713/* terminal_insertwrite(): 714 * Puts terminal in insert character mode or inserts num 715 * characters in the line 716 * Assumes MB_FILL_CHARs are present to keep column count correct 717 */ 718libedit_private void 719terminal_insertwrite(EditLine *el, wchar_t *cp, int num) 720{ 721 if (num <= 0) 722 return; 723 if (!EL_CAN_INSERT) { 724#ifdef DEBUG_EDIT 725 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n"); 726#endif /* DEBUG_EDIT */ 727 return; 728 } 729 if (num > el->el_terminal.t_size.h) { 730#ifdef DEBUG_SCREEN 731 (void) fprintf(el->el_errfile, 732 "%s: num is ridiculous: %d\r\n", __func__, num); 733#endif /* DEBUG_SCREEN */ 734 return; 735 } 736 if (GoodStr(T_IC)) /* if I have multiple insert */ 737 if ((num > 1) || !GoodStr(T_ic)) { 738 /* if ic would be more expensive */ 739 terminal_tputs(el, tgoto(Str(T_IC), num, num), num); 740 terminal_overwrite(el, cp, (size_t)num); 741 /* this updates el_cursor.h */ 742 return; 743 } 744 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */ 745 terminal_tputs(el, Str(T_im), 1); 746 747 el->el_cursor.h += num; 748 do 749 terminal__putc(el, *cp++); 750 while (--num); 751 752 if (GoodStr(T_ip)) /* have to make num chars insert */ 753 terminal_tputs(el, Str(T_ip), 1); 754 755 terminal_tputs(el, Str(T_ei), 1); 756 return; 757 } 758 do { 759 if (GoodStr(T_ic)) /* have to make num chars insert */ 760 terminal_tputs(el, Str(T_ic), 1); 761 762 terminal__putc(el, *cp++); 763 764 el->el_cursor.h++; 765 766 if (GoodStr(T_ip)) /* have to make num chars insert */ 767 terminal_tputs(el, Str(T_ip), 1); 768 /* pad the inserted char */ 769 770 } while (--num); 771} 772 773 774/* terminal_clear_EOL(): 775 * clear to end of line. There are num characters to clear 776 */ 777libedit_private void 778terminal_clear_EOL(EditLine *el, int num) 779{ 780 int i; 781 782 if (EL_CAN_CEOL && GoodStr(T_ce)) 783 terminal_tputs(el, Str(T_ce), 1); 784 else { 785 for (i = 0; i < num; i++) 786 terminal__putc(el, ' '); 787 el->el_cursor.h += num; /* have written num spaces */ 788 } 789} 790 791 792/* terminal_clear_screen(): 793 * Clear the screen 794 */ 795libedit_private void 796terminal_clear_screen(EditLine *el) 797{ /* clear the whole screen and home */ 798 799 if (GoodStr(T_cl)) 800 /* send the clear screen code */ 801 terminal_tputs(el, Str(T_cl), Val(T_li)); 802 else if (GoodStr(T_ho) && GoodStr(T_cd)) { 803 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */ 804 /* clear to bottom of screen */ 805 terminal_tputs(el, Str(T_cd), Val(T_li)); 806 } else { 807 terminal__putc(el, '\r'); 808 terminal__putc(el, '\n'); 809 } 810} 811 812 813/* terminal_beep(): 814 * Beep the way the terminal wants us 815 */ 816libedit_private void 817terminal_beep(EditLine *el) 818{ 819 if (GoodStr(T_bl)) 820 /* what termcap says we should use */ 821 terminal_tputs(el, Str(T_bl), 1); 822 else 823 terminal__putc(el, '\007'); /* an ASCII bell; ^G */ 824} 825 826 827libedit_private void 828terminal_get(EditLine *el, const char **term) 829{ 830 *term = el->el_terminal.t_name; 831} 832 833 834/* terminal_set(): 835 * Read in the terminal capabilities from the requested terminal 836 */ 837libedit_private int 838terminal_set(EditLine *el, const char *term) 839{ 840 int i; 841 char buf[TC_BUFSIZE]; 842 char *area; 843 const struct termcapstr *t; 844 sigset_t oset, nset; 845 int lins, cols; 846 847 (void) sigemptyset(&nset); 848 (void) sigaddset(&nset, SIGWINCH); 849 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 850 851 area = buf; 852 853 854 if (term == NULL) 855 term = getenv("TERM"); 856 857 if (!term || !term[0]) 858 term = "dumb"; 859 860 if (strcmp(term, "emacs") == 0) 861 el->el_flags |= EDIT_DISABLED; 862 863 (void) memset(el->el_terminal.t_cap, 0, TC_BUFSIZE); 864 865 i = tgetent(el->el_terminal.t_cap, term); 866 867 if (i <= 0) { 868 if (i == -1) 869 (void) fprintf(el->el_errfile, 870 "Cannot read termcap database;\n"); 871 else if (i == 0) 872 (void) fprintf(el->el_errfile, 873 "No entry for terminal type \"%s\";\n", term); 874 (void) fprintf(el->el_errfile, 875 "using dumb terminal settings.\n"); 876 Val(T_co) = 80; /* do a dumb terminal */ 877 Val(T_pt) = Val(T_km) = Val(T_li) = 0; 878 Val(T_xt) = Val(T_MT); 879 for (t = tstr; t->name != NULL; t++) 880 terminal_alloc(el, t, NULL); 881 } else { 882 /* auto/magic margins */ 883 Val(T_am) = tgetflag("am"); 884 Val(T_xn) = tgetflag("xn"); 885 /* Can we tab */ 886 Val(T_pt) = tgetflag("pt"); 887 Val(T_xt) = tgetflag("xt"); 888 /* do we have a meta? */ 889 Val(T_km) = tgetflag("km"); 890 Val(T_MT) = tgetflag("MT"); 891 /* Get the size */ 892 Val(T_co) = tgetnum("co"); 893 Val(T_li) = tgetnum("li"); 894 for (t = tstr; t->name != NULL; t++) { 895 /* XXX: some systems' tgetstr needs non const */ 896 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name), 897 &area)); 898 } 899 } 900 901 if (Val(T_co) < 2) 902 Val(T_co) = 80; /* just in case */ 903 if (Val(T_li) < 1) 904 Val(T_li) = 24; 905 906 el->el_terminal.t_size.v = Val(T_co); 907 el->el_terminal.t_size.h = Val(T_li); 908 909 terminal_setflags(el); 910 911 /* get the correct window size */ 912 (void) terminal_get_size(el, &lins, &cols); 913 if (terminal_change_size(el, lins, cols) == -1) 914 return -1; 915 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 916 terminal_bind_arrow(el); 917 el->el_terminal.t_name = term; 918 return i <= 0 ? -1 : 0; 919} 920 921 922/* terminal_get_size(): 923 * Return the new window size in lines and cols, and 924 * true if the size was changed. 925 */ 926libedit_private int 927terminal_get_size(EditLine *el, int *lins, int *cols) 928{ 929 930 *cols = Val(T_co); 931 *lins = Val(T_li); 932 933#ifdef TIOCGWINSZ 934 { 935 struct winsize ws; 936 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) { 937 if (ws.ws_col) 938 *cols = ws.ws_col; 939 if (ws.ws_row) 940 *lins = ws.ws_row; 941 } 942 } 943#endif 944#ifdef TIOCGSIZE 945 { 946 struct ttysize ts; 947 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) { 948 if (ts.ts_cols) 949 *cols = ts.ts_cols; 950 if (ts.ts_lines) 951 *lins = ts.ts_lines; 952 } 953 } 954#endif 955 return Val(T_co) != *cols || Val(T_li) != *lins; 956} 957 958 959/* terminal_change_size(): 960 * Change the size of the terminal 961 */ 962libedit_private int 963terminal_change_size(EditLine *el, int lins, int cols) 964{ 965 coord_t cur = el->el_cursor; 966 /* 967 * Just in case 968 */ 969 Val(T_co) = (cols < 2) ? 80 : cols; 970 Val(T_li) = (lins < 1) ? 24 : lins; 971 972 /* re-make display buffers */ 973 if (terminal_rebuffer_display(el) == -1) 974 return -1; 975 re_clear_display(el); 976 el->el_cursor = cur; 977 return 0; 978} 979 980 981/* terminal_init_arrow(): 982 * Initialize the arrow key bindings from termcap 983 */ 984static void 985terminal_init_arrow(EditLine *el) 986{ 987 funckey_t *arrow = el->el_terminal.t_fkey; 988 989 arrow[A_K_DN].name = L"down"; 990 arrow[A_K_DN].key = T_kd; 991 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY; 992 arrow[A_K_DN].type = XK_CMD; 993 994 arrow[A_K_UP].name = L"up"; 995 arrow[A_K_UP].key = T_ku; 996 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY; 997 arrow[A_K_UP].type = XK_CMD; 998 999 arrow[A_K_LT].name = L"left"; 1000 arrow[A_K_LT].key = T_kl; 1001 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR; 1002 arrow[A_K_LT].type = XK_CMD; 1003 1004 arrow[A_K_RT].name = L"right"; 1005 arrow[A_K_RT].key = T_kr; 1006 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR; 1007 arrow[A_K_RT].type = XK_CMD; 1008 1009 arrow[A_K_HO].name = L"home"; 1010 arrow[A_K_HO].key = T_kh; 1011 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG; 1012 arrow[A_K_HO].type = XK_CMD; 1013 1014 arrow[A_K_EN].name = L"end"; 1015 arrow[A_K_EN].key = T_at7; 1016 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END; 1017 arrow[A_K_EN].type = XK_CMD; 1018 1019 arrow[A_K_DE].name = L"delete"; 1020 arrow[A_K_DE].key = T_kD; 1021 arrow[A_K_DE].fun.cmd = ED_DELETE_NEXT_CHAR; 1022 arrow[A_K_DE].type = XK_CMD; 1023} 1024 1025 1026/* terminal_reset_arrow(): 1027 * Reset arrow key bindings 1028 */ 1029static void 1030terminal_reset_arrow(EditLine *el) 1031{ 1032 funckey_t *arrow = el->el_terminal.t_fkey; 1033 static const wchar_t strA[] = L"\033[A"; 1034 static const wchar_t strB[] = L"\033[B"; 1035 static const wchar_t strC[] = L"\033[C"; 1036 static const wchar_t strD[] = L"\033[D"; 1037 static const wchar_t strH[] = L"\033[H"; 1038 static const wchar_t strF[] = L"\033[F"; 1039 static const wchar_t stOA[] = L"\033OA"; 1040 static const wchar_t stOB[] = L"\033OB"; 1041 static const wchar_t stOC[] = L"\033OC"; 1042 static const wchar_t stOD[] = L"\033OD"; 1043 static const wchar_t stOH[] = L"\033OH"; 1044 static const wchar_t stOF[] = L"\033OF"; 1045 1046 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1047 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1048 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1049 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1050 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1051 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1052 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1053 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1054 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1055 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1056 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1057 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1058 1059 if (el->el_map.type != MAP_VI) 1060 return; 1061 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1062 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1063 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1064 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1065 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1066 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1067 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1068 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1069 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1070 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1071 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1072 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1073} 1074 1075 1076/* terminal_set_arrow(): 1077 * Set an arrow key binding 1078 */ 1079libedit_private int 1080terminal_set_arrow(EditLine *el, const wchar_t *name, keymacro_value_t *fun, 1081 int type) 1082{ 1083 funckey_t *arrow = el->el_terminal.t_fkey; 1084 int i; 1085 1086 for (i = 0; i < A_K_NKEYS; i++) 1087 if (wcscmp(name, arrow[i].name) == 0) { 1088 arrow[i].fun = *fun; 1089 arrow[i].type = type; 1090 return 0; 1091 } 1092 return -1; 1093} 1094 1095 1096/* terminal_clear_arrow(): 1097 * Clear an arrow key binding 1098 */ 1099libedit_private int 1100terminal_clear_arrow(EditLine *el, const wchar_t *name) 1101{ 1102 funckey_t *arrow = el->el_terminal.t_fkey; 1103 int i; 1104 1105 for (i = 0; i < A_K_NKEYS; i++) 1106 if (wcscmp(name, arrow[i].name) == 0) { 1107 arrow[i].type = XK_NOD; 1108 return 0; 1109 } 1110 return -1; 1111} 1112 1113 1114/* terminal_print_arrow(): 1115 * Print the arrow key bindings 1116 */ 1117libedit_private void 1118terminal_print_arrow(EditLine *el, const wchar_t *name) 1119{ 1120 int i; 1121 funckey_t *arrow = el->el_terminal.t_fkey; 1122 1123 for (i = 0; i < A_K_NKEYS; i++) 1124 if (*name == '\0' || wcscmp(name, arrow[i].name) == 0) 1125 if (arrow[i].type != XK_NOD) 1126 keymacro_kprint(el, arrow[i].name, 1127 &arrow[i].fun, arrow[i].type); 1128} 1129 1130 1131/* terminal_bind_arrow(): 1132 * Bind the arrow keys 1133 */ 1134libedit_private void 1135terminal_bind_arrow(EditLine *el) 1136{ 1137 el_action_t *map; 1138 const el_action_t *dmap; 1139 int i, j; 1140 char *p; 1141 funckey_t *arrow = el->el_terminal.t_fkey; 1142 1143 /* Check if the components needed are initialized */ 1144 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL) 1145 return; 1146 1147 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key; 1148 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs; 1149 1150 terminal_reset_arrow(el); 1151 1152 for (i = 0; i < A_K_NKEYS; i++) { 1153 wchar_t wt_str[VISUAL_WIDTH_MAX]; 1154 wchar_t *px; 1155 size_t n; 1156 1157 p = el->el_terminal.t_str[arrow[i].key]; 1158 if (!p || !*p) 1159 continue; 1160 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n) 1161 wt_str[n] = p[n]; 1162 while (n < VISUAL_WIDTH_MAX) 1163 wt_str[n++] = '\0'; 1164 px = wt_str; 1165 j = (unsigned char) *p; 1166 /* 1167 * Assign the arrow keys only if: 1168 * 1169 * 1. They are multi-character arrow keys and the user 1170 * has not re-assigned the leading character, or 1171 * has re-assigned the leading character to be 1172 * ED_SEQUENCE_LEAD_IN 1173 * 2. They are single arrow keys pointing to an 1174 * unassigned key. 1175 */ 1176 if (arrow[i].type == XK_NOD) 1177 keymacro_clear(el, map, px); 1178 else { 1179 if (p[1] && (dmap[j] == map[j] || 1180 map[j] == ED_SEQUENCE_LEAD_IN)) { 1181 keymacro_add(el, px, &arrow[i].fun, 1182 arrow[i].type); 1183 map[j] = ED_SEQUENCE_LEAD_IN; 1184 } else if (map[j] == ED_UNASSIGNED) { 1185 keymacro_clear(el, map, px); 1186 if (arrow[i].type == XK_CMD) 1187 map[j] = arrow[i].fun.cmd; 1188 else 1189 keymacro_add(el, px, &arrow[i].fun, 1190 arrow[i].type); 1191 } 1192 } 1193 } 1194} 1195 1196/* terminal_putc(): 1197 * Add a character 1198 */ 1199static int 1200terminal_putc(int c) 1201{ 1202 if (terminal_outfile == NULL) 1203 return -1; 1204 return fputc(c, terminal_outfile); 1205} 1206 1207static void 1208terminal_tputs(EditLine *el, const char *cap, int affcnt) 1209{ 1210#ifdef _REENTRANT 1211 pthread_mutex_lock(&terminal_mutex); 1212#endif 1213 terminal_outfile = el->el_outfile; 1214 (void)tputs(cap, affcnt, terminal_putc); 1215#ifdef _REENTRANT 1216 pthread_mutex_unlock(&terminal_mutex); 1217#endif 1218} 1219 1220/* terminal__putc(): 1221 * Add a character 1222 */ 1223libedit_private int 1224terminal__putc(EditLine *el, wint_t c) 1225{ 1226 char buf[MB_LEN_MAX +1]; 1227 ssize_t i; 1228 if (c == MB_FILL_CHAR) 1229 return 0; 1230 if (c & EL_LITERAL) 1231 return fputs(literal_get(el, c), el->el_outfile); 1232 i = ct_encode_char(buf, (size_t)MB_LEN_MAX, c); 1233 if (i <= 0) 1234 return (int)i; 1235 buf[i] = '\0'; 1236 return fputs(buf, el->el_outfile); 1237} 1238 1239/* terminal__flush(): 1240 * Flush output 1241 */ 1242libedit_private void 1243terminal__flush(EditLine *el) 1244{ 1245 1246 (void) fflush(el->el_outfile); 1247} 1248 1249/* terminal_writec(): 1250 * Write the given character out, in a human readable form 1251 */ 1252libedit_private void 1253terminal_writec(EditLine *el, wint_t c) 1254{ 1255 wchar_t visbuf[VISUAL_WIDTH_MAX +1]; 1256 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c); 1257 if (vcnt < 0) 1258 vcnt = 0; 1259 visbuf[vcnt] = '\0'; 1260 terminal_overwrite(el, visbuf, (size_t)vcnt); 1261 terminal__flush(el); 1262} 1263 1264 1265/* terminal_telltc(): 1266 * Print the current termcap characteristics 1267 */ 1268libedit_private int 1269/*ARGSUSED*/ 1270terminal_telltc(EditLine *el, int argc __attribute__((__unused__)), 1271 const wchar_t **argv __attribute__((__unused__))) 1272{ 1273 const struct termcapstr *t; 1274 char **ts; 1275 1276 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n"); 1277 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n"); 1278 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n", 1279 Val(T_co), Val(T_li)); 1280 (void) fprintf(el->el_outfile, 1281 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no"); 1282 (void) fprintf(el->el_outfile, 1283 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not "); 1284 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n", 1285 EL_HAS_AUTO_MARGINS ? "has" : "does not have"); 1286 if (EL_HAS_AUTO_MARGINS) 1287 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n", 1288 EL_HAS_MAGIC_MARGINS ? "has" : "does not have"); 1289 1290 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) { 1291 const char *ub; 1292 if (*ts && **ts) { 1293 ub = ct_encode_string(ct_visual_string( 1294 ct_decode_string(*ts, &el->el_scratch), 1295 &el->el_visual), &el->el_scratch); 1296 } else { 1297 ub = "(empty)"; 1298 } 1299 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n", 1300 t->long_name, t->name, ub); 1301 } 1302 (void) fputc('\n', el->el_outfile); 1303 return 0; 1304} 1305 1306 1307/* terminal_settc(): 1308 * Change the current terminal characteristics 1309 */ 1310libedit_private int 1311/*ARGSUSED*/ 1312terminal_settc(EditLine *el, int argc __attribute__((__unused__)), 1313 const wchar_t **argv) 1314{ 1315 const struct termcapstr *ts; 1316 const struct termcapval *tv; 1317 char what[8], how[8]; 1318 long i; 1319 char *ep; 1320 1321 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1322 return -1; 1323 1324 strlcpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what)); 1325 strlcpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how)); 1326 1327 /* 1328 * Do the strings first 1329 */ 1330 for (ts = tstr; ts->name != NULL; ts++) 1331 if (strcmp(ts->name, what) == 0) 1332 break; 1333 1334 if (ts->name != NULL) { 1335 terminal_alloc(el, ts, how); 1336 terminal_setflags(el); 1337 return 0; 1338 } 1339 /* 1340 * Do the numeric ones second 1341 */ 1342 for (tv = tval; tv->name != NULL; tv++) 1343 if (strcmp(tv->name, what) == 0) 1344 break; 1345 1346 if (tv->name == NULL) { 1347 (void) fprintf(el->el_errfile, 1348 "%ls: Bad capability `%s'.\n", argv[0], what); 1349 return -1; 1350 } 1351 1352 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1353 tv == &tval[T_am] || tv == &tval[T_xn]) { 1354 /* 1355 * Booleans 1356 */ 1357 if (strcmp(how, "yes") == 0) 1358 el->el_terminal.t_val[tv - tval] = 1; 1359 else if (strcmp(how, "no") == 0) 1360 el->el_terminal.t_val[tv - tval] = 0; 1361 else { 1362 (void) fprintf(el->el_errfile, 1363 "%ls: Bad value `%s'.\n", argv[0], how); 1364 return -1; 1365 } 1366 terminal_setflags(el); 1367 return 0; 1368 } 1369 1370 /* 1371 * Numerics 1372 */ 1373 i = strtol(how, &ep, 10); 1374 if (*ep != '\0') { 1375 (void) fprintf(el->el_errfile, 1376 "%ls: Bad value `%s'.\n", argv[0], how); 1377 return -1; 1378 } 1379 el->el_terminal.t_val[tv - tval] = (int) i; 1380 i = 0; 1381 if (tv == &tval[T_co]) { 1382 el->el_terminal.t_size.v = Val(T_co); 1383 i++; 1384 } else if (tv == &tval[T_li]) { 1385 el->el_terminal.t_size.h = Val(T_li); 1386 i++; 1387 } 1388 if (i && terminal_change_size(el, Val(T_li), Val(T_co)) == -1) 1389 return -1; 1390 return 0; 1391} 1392 1393 1394/* terminal_gettc(): 1395 * Get the current terminal characteristics 1396 */ 1397libedit_private int 1398/*ARGSUSED*/ 1399terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv) 1400{ 1401 const struct termcapstr *ts; 1402 const struct termcapval *tv; 1403 char *what; 1404 void *how; 1405 1406 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1407 return -1; 1408 1409 what = argv[1]; 1410 how = argv[2]; 1411 1412 /* 1413 * Do the strings first 1414 */ 1415 for (ts = tstr; ts->name != NULL; ts++) 1416 if (strcmp(ts->name, what) == 0) 1417 break; 1418 1419 if (ts->name != NULL) { 1420 *(char **)how = el->el_terminal.t_str[ts - tstr]; 1421 return 0; 1422 } 1423 /* 1424 * Do the numeric ones second 1425 */ 1426 for (tv = tval; tv->name != NULL; tv++) 1427 if (strcmp(tv->name, what) == 0) 1428 break; 1429 1430 if (tv->name == NULL) 1431 return -1; 1432 1433 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1434 tv == &tval[T_am] || tv == &tval[T_xn]) { 1435 static char yes[] = "yes"; 1436 static char no[] = "no"; 1437 if (el->el_terminal.t_val[tv - tval]) 1438 *(char **)how = yes; 1439 else 1440 *(char **)how = no; 1441 return 0; 1442 } else { 1443 *(int *)how = el->el_terminal.t_val[tv - tval]; 1444 return 0; 1445 } 1446} 1447 1448/* terminal_echotc(): 1449 * Print the termcap string out with variable substitution 1450 */ 1451libedit_private int 1452/*ARGSUSED*/ 1453terminal_echotc(EditLine *el, int argc __attribute__((__unused__)), 1454 const wchar_t **argv) 1455{ 1456 char *cap, *scap; 1457 wchar_t *ep; 1458 int arg_need, arg_cols, arg_rows; 1459 int verbose = 0, silent = 0; 1460 char *area; 1461 static const char fmts[] = "%s\n", fmtd[] = "%d\n"; 1462 const struct termcapstr *t; 1463 char buf[TC_BUFSIZE]; 1464 long i; 1465 1466 area = buf; 1467 1468 if (argv == NULL || argv[1] == NULL) 1469 return -1; 1470 argv++; 1471 1472 if (argv[0][0] == '-') { 1473 switch (argv[0][1]) { 1474 case 'v': 1475 verbose = 1; 1476 break; 1477 case 's': 1478 silent = 1; 1479 break; 1480 default: 1481 /* stderror(ERR_NAME | ERR_TCUSAGE); */ 1482 break; 1483 } 1484 argv++; 1485 } 1486 if (!*argv || *argv[0] == '\0') 1487 return 0; 1488 if (wcscmp(*argv, L"tabs") == 0) { 1489 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no"); 1490 return 0; 1491 } else if (wcscmp(*argv, L"meta") == 0) { 1492 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no"); 1493 return 0; 1494 } else if (wcscmp(*argv, L"xn") == 0) { 1495 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ? 1496 "yes" : "no"); 1497 return 0; 1498 } else if (wcscmp(*argv, L"am") == 0) { 1499 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ? 1500 "yes" : "no"); 1501 return 0; 1502 } else if (wcscmp(*argv, L"baud") == 0) { 1503 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed); 1504 return 0; 1505 } else if (wcscmp(*argv, L"rows") == 0 || 1506 wcscmp(*argv, L"lines") == 0) { 1507 (void) fprintf(el->el_outfile, fmtd, Val(T_li)); 1508 return 0; 1509 } else if (wcscmp(*argv, L"cols") == 0) { 1510 (void) fprintf(el->el_outfile, fmtd, Val(T_co)); 1511 return 0; 1512 } 1513 /* 1514 * Try to use our local definition first 1515 */ 1516 scap = NULL; 1517 for (t = tstr; t->name != NULL; t++) 1518 if (strcmp(t->name, 1519 ct_encode_string(*argv, &el->el_scratch)) == 0) { 1520 scap = el->el_terminal.t_str[t - tstr]; 1521 break; 1522 } 1523 if (t->name == NULL) { 1524 /* XXX: some systems' tgetstr needs non const */ 1525 scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area); 1526 } 1527 if (!scap || scap[0] == '\0') { 1528 if (!silent) 1529 (void) fprintf(el->el_errfile, 1530 "echotc: Termcap parameter `%ls' not found.\n", 1531 *argv); 1532 return -1; 1533 } 1534 /* 1535 * Count home many values we need for this capability. 1536 */ 1537 for (cap = scap, arg_need = 0; *cap; cap++) 1538 if (*cap == '%') 1539 switch (*++cap) { 1540 case 'd': 1541 case '2': 1542 case '3': 1543 case '.': 1544 case '+': 1545 arg_need++; 1546 break; 1547 case '%': 1548 case '>': 1549 case 'i': 1550 case 'r': 1551 case 'n': 1552 case 'B': 1553 case 'D': 1554 break; 1555 default: 1556 /* 1557 * hpux has lot's of them... 1558 */ 1559 if (verbose) 1560 (void) fprintf(el->el_errfile, 1561 "echotc: Warning: unknown termcap %% `%c'.\n", 1562 *cap); 1563 /* This is bad, but I won't complain */ 1564 break; 1565 } 1566 1567 switch (arg_need) { 1568 case 0: 1569 argv++; 1570 if (*argv && *argv[0]) { 1571 if (!silent) 1572 (void) fprintf(el->el_errfile, 1573 "echotc: Warning: Extra argument `%ls'.\n", 1574 *argv); 1575 return -1; 1576 } 1577 terminal_tputs(el, scap, 1); 1578 break; 1579 case 1: 1580 argv++; 1581 if (!*argv || *argv[0] == '\0') { 1582 if (!silent) 1583 (void) fprintf(el->el_errfile, 1584 "echotc: Warning: Missing argument.\n"); 1585 return -1; 1586 } 1587 arg_cols = 0; 1588 i = wcstol(*argv, &ep, 10); 1589 if (*ep != '\0' || i < 0) { 1590 if (!silent) 1591 (void) fprintf(el->el_errfile, 1592 "echotc: Bad value `%ls' for rows.\n", 1593 *argv); 1594 return -1; 1595 } 1596 arg_rows = (int) i; 1597 argv++; 1598 if (*argv && *argv[0]) { 1599 if (!silent) 1600 (void) fprintf(el->el_errfile, 1601 "echotc: Warning: Extra argument `%ls" 1602 "'.\n", *argv); 1603 return -1; 1604 } 1605 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1); 1606 break; 1607 default: 1608 /* This is wrong, but I will ignore it... */ 1609 if (verbose) 1610 (void) fprintf(el->el_errfile, 1611 "echotc: Warning: Too many required arguments (%d).\n", 1612 arg_need); 1613 /* FALLTHROUGH */ 1614 case 2: 1615 argv++; 1616 if (!*argv || *argv[0] == '\0') { 1617 if (!silent) 1618 (void) fprintf(el->el_errfile, 1619 "echotc: Warning: Missing argument.\n"); 1620 return -1; 1621 } 1622 i = wcstol(*argv, &ep, 10); 1623 if (*ep != '\0' || i < 0) { 1624 if (!silent) 1625 (void) fprintf(el->el_errfile, 1626 "echotc: Bad value `%ls' for cols.\n", 1627 *argv); 1628 return -1; 1629 } 1630 arg_cols = (int) i; 1631 argv++; 1632 if (!*argv || *argv[0] == '\0') { 1633 if (!silent) 1634 (void) fprintf(el->el_errfile, 1635 "echotc: Warning: Missing argument.\n"); 1636 return -1; 1637 } 1638 i = wcstol(*argv, &ep, 10); 1639 if (*ep != '\0' || i < 0) { 1640 if (!silent) 1641 (void) fprintf(el->el_errfile, 1642 "echotc: Bad value `%ls' for rows.\n", 1643 *argv); 1644 return -1; 1645 } 1646 arg_rows = (int) i; 1647 if (*ep != '\0') { 1648 if (!silent) 1649 (void) fprintf(el->el_errfile, 1650 "echotc: Bad value `%ls'.\n", *argv); 1651 return -1; 1652 } 1653 argv++; 1654 if (*argv && *argv[0]) { 1655 if (!silent) 1656 (void) fprintf(el->el_errfile, 1657 "echotc: Warning: Extra argument `%ls" 1658 "'.\n", *argv); 1659 return -1; 1660 } 1661 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows); 1662 break; 1663 } 1664 return 0; 1665} 1666