terminal.c revision 11678
1/*- 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Christos Zoulas of Cornell University. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37#if !defined(lint) && !defined(SCCSID) 38static char sccsid[] = "@(#)term.c 8.2 (Berkeley) 4/30/95"; 39#endif /* not lint && not SCCSID */ 40 41/* 42 * term.c: Editor/termcap-curses interface 43 * We have to declare a static variable here, since the 44 * termcap putchar routine does not take an argument! 45 */ 46#include "sys.h" 47#include <stdio.h> 48#include <signal.h> 49#include <string.h> 50#include <stdlib.h> 51#include <unistd.h> 52#include <termcap.h> 53#include <sys/types.h> 54 55#include "el.h" 56 57/* 58 * IMPORTANT NOTE: these routines are allowed to look at the current screen 59 * and the current possition assuming that it is correct. If this is not 60 * true, then the update will be WRONG! This is (should be) a valid 61 * assumption... 62 */ 63 64#define TC_BUFSIZE 2048 65 66#define GoodStr(a) (el->el_term.t_str[a] != NULL && \ 67 el->el_term.t_str[a][0] != '\0') 68#define Str(a) el->el_term.t_str[a] 69#define Val(a) el->el_term.t_val[a] 70 71private struct termcapstr { 72 char *name; 73 char *long_name; 74} tstr[] = { 75 76#define T_al 0 77 { "al", "add new blank line" }, 78#define T_bl 1 79 { "bl", "audible bell" }, 80#define T_cd 2 81 { "cd", "clear to bottom" }, 82#define T_ce 3 83 { "ce", "clear to end of line" }, 84#define T_ch 4 85 { "ch", "cursor to horiz pos" }, 86#define T_cl 5 87 { "cl", "clear screen" }, 88#define T_dc 6 89 { "dc", "delete a character" }, 90#define T_dl 7 91 { "dl", "delete a line" }, 92#define T_dm 8 93 { "dm", "start delete mode" }, 94#define T_ed 9 95 { "ed", "end delete mode" }, 96#define T_ei 10 97 { "ei", "end insert mode" }, 98#define T_fs 11 99 { "fs", "cursor from status line" }, 100#define T_ho 12 101 { "ho", "home cursor" }, 102#define T_ic 13 103 { "ic", "insert character" }, 104#define T_im 14 105 { "im", "start insert mode" }, 106#define T_ip 15 107 { "ip", "insert padding" }, 108#define T_kd 16 109 { "kd", "sends cursor down" }, 110#define T_kl 17 111 { "kl", "sends cursor left" }, 112#define T_kr 18 113 { "kr", "sends cursor right" }, 114#define T_ku 19 115 { "ku", "sends cursor up" }, 116#define T_md 20 117 { "md", "begin bold" }, 118#define T_me 21 119 { "me", "end attributes" }, 120#define T_nd 22 121 { "nd", "non destructive space" }, 122#define T_se 23 123 { "se", "end standout" }, 124#define T_so 24 125 { "so", "begin standout" }, 126#define T_ts 25 127 { "ts", "cursor to status line" }, 128#define T_up 26 129 { "up", "cursor up one" }, 130#define T_us 27 131 { "us", "begin underline" }, 132#define T_ue 28 133 { "ue", "end underline" }, 134#define T_vb 29 135 { "vb", "visible bell" }, 136#define T_DC 30 137 { "DC", "delete multiple chars" }, 138#define T_DO 31 139 { "DO", "cursor down multiple" }, 140#define T_IC 32 141 { "IC", "insert multiple chars" }, 142#define T_LE 33 143 { "LE", "cursor left multiple" }, 144#define T_RI 34 145 { "RI", "cursor right multiple" }, 146#define T_UP 35 147 { "UP", "cursor up multiple" }, 148#define T_str 36 149 { NULL, NULL } 150}; 151 152private struct termcapval { 153 char *name; 154 char *long_name; 155} tval[] = { 156#define T_pt 0 157 { "pt", "has physical tabs" }, 158#define T_li 1 159 { "li", "Number of lines" }, 160#define T_co 2 161 { "co", "Number of columns" }, 162#define T_km 3 163 { "km", "Has meta key" }, 164#define T_xt 4 165 { "xt", "Tab chars destructive" }, 166#define T_MT 5 167 { "MT", "Has meta key" }, /* XXX? */ 168#define T_val 6 169 { NULL, NULL, } 170}; 171 172/* do two or more of the attributes use me */ 173 174private void term_rebuffer_display __P((EditLine *)); 175private void term_free_display __P((EditLine *)); 176private void term_alloc_display __P((EditLine *)); 177private void term_alloc __P((EditLine *, 178 struct termcapstr *, char *)); 179private void term_init_arrow __P((EditLine *)); 180private void term_reset_arrow __P((EditLine *)); 181 182 183private FILE *term_outfile = NULL; /* XXX: How do we fix that? */ 184 185 186/* term_setflags(): 187 * Set the terminal capability flags 188 */ 189private void 190term_setflags(el) 191 EditLine *el; 192{ 193 EL_FLAGS = 0; 194 if (el->el_tty.t_tabs) 195 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0; 196 197 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0; 198 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0; 199 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0; 200 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ? 201 TERM_CAN_INSERT : 0; 202 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0; 203 204 if (GoodStr(T_me) && GoodStr(T_ue)) 205 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ? TERM_CAN_ME : 0; 206 else 207 EL_FLAGS &= ~TERM_CAN_ME; 208 if (GoodStr(T_me) && GoodStr(T_se)) 209 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ? TERM_CAN_ME : 0; 210 211 212#ifdef DEBUG_SCREEN 213 if (!EL_CAN_UP) { 214 (void) fprintf(el->el_errfile, "WARNING: Your terminal cannot move up.\n"); 215 (void) fprintf(el->el_errfile, "Editing may be odd for long lines.\n"); 216 } 217 if (!EL_CAN_CEOL) 218 (void) fprintf(el->el_errfile, "no clear EOL capability.\n"); 219 if (!EL_CAN_DELETE) 220 (void) fprintf(el->el_errfile, "no delete char capability.\n"); 221 if (!EL_CAN_INSERT) 222 (void) fprintf(el->el_errfile, "no insert char capability.\n"); 223#endif /* DEBUG_SCREEN */ 224} 225 226 227/* term_init(): 228 * Initialize the terminal stuff 229 */ 230protected int 231term_init(el) 232 EditLine *el; 233{ 234 el->el_term.t_buf = (char *) el_malloc(TC_BUFSIZE); 235 el->el_term.t_cap = (char *) el_malloc(TC_BUFSIZE); 236 el->el_term.t_fkey = (fkey_t *) el_malloc(4 * sizeof(fkey_t)); 237 el->el_term.t_loc = 0; 238 el->el_term.t_str = (char **) el_malloc(T_str * sizeof(char*)); 239 (void) memset(el->el_term.t_str, 0, T_str * sizeof(char*)); 240 el->el_term.t_val = (int *) el_malloc(T_val * sizeof(int)); 241 (void) memset(el->el_term.t_val, 0, T_val * sizeof(char*)); 242 term_outfile = el->el_outfile; 243 (void) term_set(el, NULL); 244 term_init_arrow(el); 245 return 0; 246} 247 248/* term_end(): 249 * Clean up the terminal stuff 250 */ 251protected void 252term_end(el) 253 EditLine *el; 254{ 255 el_free((ptr_t) el->el_term.t_buf); 256 el->el_term.t_buf = NULL; 257 el_free((ptr_t) el->el_term.t_cap); 258 el->el_term.t_cap = NULL; 259 el->el_term.t_loc = 0; 260 el_free((ptr_t) el->el_term.t_str); 261 el->el_term.t_str = NULL; 262 el_free((ptr_t) el->el_term.t_val); 263 el->el_term.t_val = NULL; 264 term_free_display(el); 265} 266 267 268/* term_alloc(): 269 * Maintain a string pool for termcap strings 270 */ 271private void 272term_alloc(el, t, cap) 273 EditLine *el; 274 struct termcapstr *t; 275 char *cap; 276{ 277 char termbuf[TC_BUFSIZE]; 278 int tlen, clen; 279 char **tlist = el->el_term.t_str; 280 char **tmp, **str = &tlist[t - tstr]; 281 282 if (cap == NULL || *cap == '\0') { 283 *str = NULL; 284 return; 285 } 286 else 287 clen = strlen(cap); 288 289 tlen = *str == NULL ? 0 : strlen(*str); 290 291 /* 292 * New string is shorter; no need to allocate space 293 */ 294 if (clen <= tlen) { 295 (void) strcpy(*str, cap); 296 return; 297 } 298 299 /* 300 * New string is longer; see if we have enough space to append 301 */ 302 if (el->el_term.t_loc + 3 < TC_BUFSIZE) { 303 (void) strcpy(*str = &el->el_term.t_buf[el->el_term.t_loc], cap); 304 el->el_term.t_loc += clen + 1; /* one for \0 */ 305 return; 306 } 307 308 /* 309 * Compact our buffer; no need to check compaction, cause we know it 310 * fits... 311 */ 312 tlen = 0; 313 for (tmp = tlist; tmp < &tlist[T_str]; tmp++) 314 if (*tmp != NULL && *tmp != '\0' && *tmp != *str) { 315 char *ptr; 316 317 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++) 318 continue; 319 termbuf[tlen++] = '\0'; 320 } 321 memcpy(el->el_term.t_buf, termbuf, TC_BUFSIZE); 322 el->el_term.t_loc = tlen; 323 if (el->el_term.t_loc + 3 >= TC_BUFSIZE) { 324 (void) fprintf(el->el_errfile, "Out of termcap string space.\n"); 325 return; 326 } 327 (void) strcpy(*str = &el->el_term.t_buf[el->el_term.t_loc], cap); 328 el->el_term.t_loc += clen + 1; /* one for \0 */ 329 return; 330} /* end term_alloc */ 331 332 333/* term_rebuffer_display(): 334 * Rebuffer the display after the screen changed size 335 */ 336private void 337term_rebuffer_display(el) 338 EditLine *el; 339{ 340 coord_t *c = &el->el_term.t_size; 341 342 term_free_display(el); 343 344 /* make this public, -1 to avoid wraps */ 345 c->h = Val(T_co) - 1; 346 c->v = (EL_BUFSIZ * 4) / c->h + 1; 347 348 term_alloc_display(el); 349} /* end term_rebuffer_display */ 350 351 352/* term_alloc_display(): 353 * Allocate a new display. 354 */ 355private void 356term_alloc_display(el) 357 EditLine *el; 358{ 359 int i; 360 char **b; 361 coord_t *c = &el->el_term.t_size; 362 363 b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1))); 364 for (i = 0; i < c->v; i++) 365 b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1))); 366 b[c->v] = NULL; 367 el->el_display = b; 368 369 b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1))); 370 for (i = 0; i < c->v; i++) 371 b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1))); 372 b[c->v] = NULL; 373 el->el_vdisplay = b; 374 375} /* end term_alloc_display */ 376 377 378/* term_free_display(): 379 * Free the display buffers 380 */ 381private void 382term_free_display(el) 383 EditLine *el; 384{ 385 char **b; 386 char **bufp; 387 388 b = el->el_display; 389 el->el_display = NULL; 390 if (b != NULL) { 391 for (bufp = b; *bufp != NULL; bufp++) 392 el_free((ptr_t) *bufp); 393 el_free((ptr_t) b); 394 } 395 b = el->el_vdisplay; 396 el->el_vdisplay = NULL; 397 if (b != NULL) { 398 for (bufp = b; *bufp != NULL; bufp++) 399 el_free((ptr_t) * bufp); 400 el_free((ptr_t) b); 401 } 402} /* end term_free_display */ 403 404 405/* term_move_to_line(): 406 * move to line <where> (first line == 0) 407 * as efficiently as possible 408 */ 409protected void 410term_move_to_line(el, where) 411 EditLine *el; 412 int where; 413{ 414 int del, i; 415 416 if (where == el->el_cursor.v) 417 return; 418 419 if (where > el->el_term.t_size.v) { 420#ifdef DEBUG_SCREEN 421 (void) fprintf(el->el_errfile, 422 "term_move_to_line: where is ridiculous: %d\r\n", where); 423#endif /* DEBUG_SCREEN */ 424 return; 425 } 426 427 if ((del = where - el->el_cursor.v) > 0) { 428 if ((del > 1) && GoodStr(T_DO)) 429 (void) tputs(tgoto(Str(T_DO), del, del), del, term__putc); 430 else { 431 for (i = 0; i < del; i++) 432 term__putc('\n'); 433 el->el_cursor.h = 0; /* because the \n will become \r\n */ 434 } 435 } 436 else { /* del < 0 */ 437 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up))) 438 (void) tputs(tgoto(Str(T_UP), -del, -del), -del, term__putc); 439 else { 440 if (GoodStr(T_up)) 441 for (i = 0; i < -del; i++) 442 (void) tputs(Str(T_up), 1, term__putc); 443 } 444 } 445 el->el_cursor.v = where; /* now where is here */ 446} /* end term_move_to_line */ 447 448 449/* term_move_to_char(): 450 * Move to the character position specified 451 */ 452protected void 453term_move_to_char(el, where) 454 EditLine *el; 455 int where; 456{ 457 int del, i; 458 459mc_again: 460 if (where == el->el_cursor.h) 461 return; 462 463 if (where > (el->el_term.t_size.h + 1)) { 464#ifdef DEBUG_SCREEN 465 (void) fprintf(el->el_errfile, 466 "term_move_to_char: where is riduculous: %d\r\n", where); 467#endif /* DEBUG_SCREEN */ 468 return; 469 } 470 471 if (!where) { /* if where is first column */ 472 term__putc('\r'); /* do a CR */ 473 el->el_cursor.h = 0; 474 return; 475 } 476 477 del = where - el->el_cursor.h; 478 479 if ((del < -4 || del > 4) && GoodStr(T_ch)) 480 /* go there directly */ 481 (void) tputs(tgoto(Str(T_ch), where, where), where, term__putc); 482 else { 483 if (del > 0) { /* moving forward */ 484 if ((del > 4) && GoodStr(T_RI)) 485 (void) tputs(tgoto(Str(T_RI), del, del), del, term__putc); 486 else { 487 if (EL_CAN_TAB) { /* if I can do tabs, use them */ 488 if ((el->el_cursor.h & 0370) != (where & 0370)) { 489 /* if not within tab stop */ 490 for (i = (el->el_cursor.h & 0370); 491 i < (where & 0370); i += 8) 492 term__putc('\t'); /* then tab over */ 493 el->el_cursor.h = where & 0370; 494 } 495 } 496 /* it's usually cheaper to just write the chars, so we do. */ 497 498 /* NOTE THAT term_overwrite() WILL CHANGE el->el_cursor.h!!! */ 499 term_overwrite(el, 500 &el->el_display[el->el_cursor.v][el->el_cursor.h], 501 where - el->el_cursor.h); 502 503 } 504 } 505 else { /* del < 0 := moving backward */ 506 if ((-del > 4) && GoodStr(T_LE)) 507 (void) tputs(tgoto(Str(T_LE), -del, -del), -del, term__putc); 508 else { /* can't go directly there */ 509 /* if the "cost" is greater than the "cost" from col 0 */ 510 if (EL_CAN_TAB ? (-del > ((where >> 3) + (where & 07))) 511 : (-del > where)) { 512 term__putc('\r'); /* do a CR */ 513 el->el_cursor.h = 0; 514 goto mc_again; /* and try again */ 515 } 516 for (i = 0; i < -del; i++) 517 term__putc('\b'); 518 } 519 } 520 } 521 el->el_cursor.h = where; /* now where is here */ 522} /* end term_move_to_char */ 523 524 525/* term_overwrite(): 526 * Overstrike num characters 527 */ 528protected void 529term_overwrite(el, cp, n) 530 EditLine *el; 531 char *cp; 532 int n; 533{ 534 if (n <= 0) 535 return; /* catch bugs */ 536 537 if (n > (el->el_term.t_size.h + 1)) { 538#ifdef DEBUG_SCREEN 539 (void) fprintf(el->el_errfile, "term_overwrite: n is riduculous: %d\r\n", n); 540#endif /* DEBUG_SCREEN */ 541 return; 542 } 543 544 do { 545 term__putc(*cp++); 546 el->el_cursor.h++; 547 } while (--n); 548} /* end term_overwrite */ 549 550 551/* term_deletechars(): 552 * Delete num characters 553 */ 554protected void 555term_deletechars(el, num) 556 EditLine *el; 557 int num; 558{ 559 if (num <= 0) 560 return; 561 562 if (!EL_CAN_DELETE) { 563#ifdef DEBUG_EDIT 564 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n"); 565#endif /* DEBUG_EDIT */ 566 return; 567 } 568 569 if (num > el->el_term.t_size.h) { 570#ifdef DEBUG_SCREEN 571 (void) fprintf(el->el_errfile, 572 "term_deletechars: num is riduculous: %d\r\n", num); 573#endif /* DEBUG_SCREEN */ 574 return; 575 } 576 577 if (GoodStr(T_DC)) /* if I have multiple delete */ 578 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more expen. */ 579 (void) tputs(tgoto(Str(T_DC), num, num), num, term__putc); 580 return; 581 } 582 583 if (GoodStr(T_dm)) /* if I have delete mode */ 584 (void) tputs(Str(T_dm), 1, term__putc); 585 586 if (GoodStr(T_dc)) /* else do one at a time */ 587 while (num--) 588 (void) tputs(Str(T_dc), 1, term__putc); 589 590 if (GoodStr(T_ed)) /* if I have delete mode */ 591 (void) tputs(Str(T_ed), 1, term__putc); 592} /* end term_deletechars */ 593 594 595/* term_insertwrite(): 596 * Puts terminal in insert character mode or inserts num 597 * characters in the line 598 */ 599protected void 600term_insertwrite(el, cp, num) 601 EditLine *el; 602 char *cp; 603 int num; 604{ 605 if (num <= 0) 606 return; 607 if (!EL_CAN_INSERT) { 608#ifdef DEBUG_EDIT 609 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n"); 610#endif /* DEBUG_EDIT */ 611 return; 612 } 613 614 if (num > el->el_term.t_size.h) { 615#ifdef DEBUG_SCREEN 616 (void) fprintf(el->el_errfile, "StartInsert: num is riduculous: %d\r\n", num); 617#endif /* DEBUG_SCREEN */ 618 return; 619 } 620 621 if (GoodStr(T_IC)) /* if I have multiple insert */ 622 if ((num > 1) || !GoodStr(T_ic)) { /* if ic would be more expen. */ 623 (void) tputs(tgoto(Str(T_IC), num, num), num, term__putc); 624 term_overwrite(el, cp, num); /* this updates el_cursor.h */ 625 return; 626 } 627 628 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */ 629 (void) tputs(Str(T_im), 1, term__putc); 630 631 el->el_cursor.h += num; 632 do 633 term__putc(*cp++); 634 while (--num); 635 636 if (GoodStr(T_ip)) /* have to make num chars insert */ 637 (void) tputs(Str(T_ip), 1, term__putc); 638 639 (void) tputs(Str(T_ei), 1, term__putc); 640 return; 641 } 642 643 do { 644 if (GoodStr(T_ic)) /* have to make num chars insert */ 645 (void) tputs(Str(T_ic), 1, term__putc); /* insert a char */ 646 647 term__putc(*cp++); 648 649 el->el_cursor.h++; 650 651 if (GoodStr(T_ip)) /* have to make num chars insert */ 652 (void) tputs(Str(T_ip), 1, term__putc);/* pad the inserted char */ 653 654 } while (--num); 655} /* end term_insertwrite */ 656 657 658/* term_clear_EOL(): 659 * clear to end of line. There are num characters to clear 660 */ 661protected void 662term_clear_EOL(el, num) 663 EditLine *el; 664 int num; 665{ 666 int i; 667 668 if (EL_CAN_CEOL && GoodStr(T_ce)) 669 (void) tputs(Str(T_ce), 1, term__putc); 670 else { 671 for (i = 0; i < num; i++) 672 term__putc(' '); 673 el->el_cursor.h += num; /* have written num spaces */ 674 } 675} /* end term_clear_EOL */ 676 677 678/* term_clear_screen(): 679 * Clear the screen 680 */ 681protected void 682term_clear_screen(el) 683 EditLine *el; 684{ /* clear the whole screen and home */ 685 if (GoodStr(T_cl)) 686 /* send the clear screen code */ 687 (void) tputs(Str(T_cl), Val(T_li), term__putc); 688 else if (GoodStr(T_ho) && GoodStr(T_cd)) { 689 (void) tputs(Str(T_ho), Val(T_li), term__putc); /* home */ 690 /* clear to bottom of screen */ 691 (void) tputs(Str(T_cd), Val(T_li), term__putc); 692 } 693 else { 694 term__putc('\r'); 695 term__putc('\n'); 696 } 697} /* end term_clear_screen */ 698 699 700/* term_beep(): 701 * Beep the way the terminal wants us 702 */ 703protected void 704term_beep(el) 705 EditLine *el; 706{ 707 if (GoodStr(T_vb)) 708 (void) tputs(Str(T_vb), 1, term__putc); /* visible bell */ 709 else if (GoodStr(T_bl)) 710 /* what termcap says we should use */ 711 (void) tputs(Str(T_bl), 1, term__putc); 712 else 713 term__putc('\007'); /* an ASCII bell; ^G */ 714} /* end term_beep */ 715 716 717#ifdef notdef 718/* term_clear_to_bottom(): 719 * Clear to the bottom of the screen 720 */ 721protected void 722term_clear_to_bottom(el) 723 EditLine *el; 724{ 725 if (GoodStr(T_cd)) 726 (void) tputs(Str(T_cd), Val(T_li), term__putc); 727 else if (GoodStr(T_ce)) 728 (void) tputs(Str(T_ce), Val(T_li), term__putc); 729} /* end term_clear_to_bottom */ 730#endif 731 732 733/* term_set(): 734 * Read in the terminal capabilities from the requested terminal 735 */ 736protected int 737term_set(el, term) 738 EditLine *el; 739 char *term; 740{ 741 int i; 742 char buf[TC_BUFSIZE]; 743 char *area; 744 struct termcapstr *t; 745 sigset_t oset, nset; 746 int lins, cols; 747 748 (void) sigemptyset(&nset); 749 (void) sigaddset(&nset, SIGWINCH); 750 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 751 752 area = buf; 753 754 755 if (term == NULL) 756 term = getenv("TERM"); 757 758 if (!term || !term[0]) 759 term = "dumb"; 760 761 memset(el->el_term.t_cap, 0, TC_BUFSIZE); 762 763 i = tgetent(el->el_term.t_cap, term); 764 765 if (i <= 0) { 766 if (i == -1) 767#ifdef __FreeBSD__ 768 (void) fprintf(el->el_errfile, "Cannot open /usr/share/misc/termcap.\n"); 769#else 770 (void) fprintf(el->el_errfile, "Cannot open /etc/termcap.\n"); 771#endif 772 else if (i == 0) 773 (void) fprintf(el->el_errfile, 774 "No entry for terminal type \"%s\"\n", term); 775 (void) fprintf(el->el_errfile, "using dumb terminal settings.\n"); 776 Val(T_co) = 80; /* do a dumb terminal */ 777 Val(T_pt) = Val(T_km) = Val(T_li) = 0; 778 Val(T_xt) = Val(T_MT); 779 for (t = tstr; t->name != NULL; t++) 780 term_alloc(el, t, NULL); 781 } 782 else { 783 /* Can we tab */ 784 Val(T_pt) = tgetflag("pt"); 785 Val(T_xt) = tgetflag("xt"); 786 /* do we have a meta? */ 787 Val(T_km) = tgetflag("km"); 788 Val(T_MT) = tgetflag("MT"); 789 /* Get the size */ 790 Val(T_co) = tgetnum("co"); 791 Val(T_li) = tgetnum("li"); 792 for (t = tstr; t->name != NULL; t++) 793 term_alloc(el, t, tgetstr(t->name, &area)); 794 } 795 796 if (Val(T_co) < 2) 797 Val(T_co) = 80; /* just in case */ 798 if (Val(T_li) < 1) 799 Val(T_li) = 24; 800 801 el->el_term.t_size.v = Val(T_co); 802 el->el_term.t_size.h = Val(T_li); 803 804 term_setflags(el); 805 806 (void) term_get_size(el, &lins, &cols);/* get the correct window size */ 807 term_change_size(el, lins, cols); 808 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 809 term_bind_arrow(el); 810 return 0; 811} /* end term_set */ 812 813 814/* term_get_size(): 815 * Return the new window size in lines and cols, and 816 * true if the size was changed. 817 */ 818protected int 819term_get_size(el, lins, cols) 820 EditLine *el; 821 int *lins, *cols; 822{ 823 824 *cols = Val(T_co); 825 *lins = Val(T_li); 826 827#ifdef TIOCGWINSZ 828 { 829 struct winsize ws; 830 if (ioctl(el->el_infd, TIOCGWINSZ, (ioctl_t) &ws) != -1) { 831 if (ws.ws_col) 832 *cols = ws.ws_col; 833 if (ws.ws_row) 834 *lins = ws.ws_row; 835 } 836 } 837#endif 838#ifdef TIOCGSIZE 839 { 840 struct ttysize ts; 841 if (ioctl(el->el_infd, TIOCGSIZE, (ioctl_t) &ts) != -1) { 842 if (ts.ts_cols) 843 *cols = ts.ts_cols; 844 if (ts.ts_lines) 845 *lins = ts.ts_lines; 846 } 847 } 848#endif 849 return (Val(T_co) != *cols || Val(T_li) != *lins); 850} /* end term_get_size */ 851 852 853/* term_change_size(): 854 * Change the size of the terminal 855 */ 856protected void 857term_change_size(el, lins, cols) 858 EditLine *el; 859 int lins, cols; 860{ 861 /* 862 * Just in case 863 */ 864 Val(T_co) = (cols < 2) ? 80 : cols; 865 Val(T_li) = (lins < 1) ? 24 : lins; 866 867 term_rebuffer_display(el); /* re-make display buffers */ 868 re_clear_display(el); 869} /* end term_change_size */ 870 871 872/* term_init_arrow(): 873 * Initialize the arrow key bindings from termcap 874 */ 875private void 876term_init_arrow(el) 877 EditLine *el; 878{ 879 fkey_t *arrow = el->el_term.t_fkey; 880 881 arrow[A_K_DN].name = "down"; 882 arrow[A_K_DN].key = T_kd; 883 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY; 884 arrow[A_K_DN].type = XK_CMD; 885 886 arrow[A_K_UP].name = "up"; 887 arrow[A_K_UP].key = T_ku; 888 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY; 889 arrow[A_K_UP].type = XK_CMD; 890 891 arrow[A_K_LT].name = "left"; 892 arrow[A_K_LT].key = T_kl; 893 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR; 894 arrow[A_K_LT].type = XK_CMD; 895 896 arrow[A_K_RT].name = "right"; 897 arrow[A_K_RT].key = T_kr; 898 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR; 899 arrow[A_K_RT].type = XK_CMD; 900 901} 902 903 904/* term_reset_arrow(): 905 * Reset arrow key bindings 906 */ 907private void 908term_reset_arrow(el) 909 EditLine *el; 910{ 911 fkey_t *arrow = el->el_term.t_fkey; 912 static char strA[] = {033, '[', 'A', '\0'}; 913 static char strB[] = {033, '[', 'B', '\0'}; 914 static char strC[] = {033, '[', 'C', '\0'}; 915 static char strD[] = {033, '[', 'D', '\0'}; 916 static char stOA[] = {033, 'O', 'A', '\0'}; 917 static char stOB[] = {033, 'O', 'B', '\0'}; 918 static char stOC[] = {033, 'O', 'C', '\0'}; 919 static char stOD[] = {033, 'O', 'D', '\0'}; 920 921 key_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 922 key_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 923 key_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 924 key_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 925 key_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 926 key_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 927 key_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 928 key_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 929 930 if (el->el_map.type == MAP_VI) { 931 key_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 932 key_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 933 key_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 934 key_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 935 key_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 936 key_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 937 key_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 938 key_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 939 } 940} 941 942 943/* term_set_arrow(): 944 * Set an arrow key binding 945 */ 946protected int 947term_set_arrow(el, name, fun, type) 948 EditLine *el; 949 char *name; 950 key_value_t *fun; 951 int type; 952{ 953 fkey_t *arrow = el->el_term.t_fkey; 954 int i; 955 956 for (i = 0; i < A_K_NKEYS; i++) 957 if (strcmp(name, arrow[i].name) == 0) { 958 arrow[i].fun = *fun; 959 arrow[i].type = type; 960 return 0; 961 } 962 return -1; 963} 964 965 966/* term_clear_arrow(): 967 * Clear an arrow key binding 968 */ 969protected int 970term_clear_arrow(el, name) 971 EditLine *el; 972 char *name; 973{ 974 fkey_t *arrow = el->el_term.t_fkey; 975 int i; 976 977 for (i = 0; i < A_K_NKEYS; i++) 978 if (strcmp(name, arrow[i].name) == 0) { 979 arrow[i].type = XK_NOD; 980 return 0; 981 } 982 return -1; 983} 984 985 986/* term_print_arrow(): 987 * Print the arrow key bindings 988 */ 989protected void 990term_print_arrow(el, name) 991 EditLine *el; 992 char *name; 993{ 994 int i; 995 fkey_t *arrow = el->el_term.t_fkey; 996 997 for (i = 0; i < A_K_NKEYS; i++) 998 if (*name == '\0' || strcmp(name, arrow[i].name) == 0) 999 if (arrow[i].type != XK_NOD) 1000 key_kprint(el, arrow[i].name, &arrow[i].fun, arrow[i].type); 1001} 1002 1003 1004/* term_bind_arrow(): 1005 * Bind the arrow keys 1006 */ 1007protected void 1008term_bind_arrow(el) 1009 EditLine *el; 1010{ 1011 el_action_t *map, *dmap; 1012 int i, j; 1013 char *p; 1014 fkey_t *arrow = el->el_term.t_fkey; 1015 1016 /* Check if the components needed are initialized */ 1017 if (el->el_term.t_buf == NULL || el->el_map.key == NULL) 1018 return; 1019 1020 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key; 1021 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs; 1022 1023 term_reset_arrow(el); 1024 1025 for (i = 0; i < 4; i++) { 1026 p = el->el_term.t_str[arrow[i].key]; 1027 if (p && *p) { 1028 j = (unsigned char) *p; 1029 /* 1030 * Assign the arrow keys only if: 1031 * 1032 * 1. They are multi-character arrow keys and the user 1033 * has not re-assigned the leading character, or 1034 * has re-assigned the leading character to be 1035 * ED_SEQUENCE_LEAD_IN 1036 * 2. They are single arrow keys pointing to an unassigned key. 1037 */ 1038 if (arrow[i].type == XK_NOD) 1039 key_clear(el, map, p); 1040 else { 1041 if (p[1] && (dmap[j] == map[j] || 1042 map[j] == ED_SEQUENCE_LEAD_IN)) { 1043 key_add(el, p, &arrow[i].fun, arrow[i].type); 1044 map[j] = ED_SEQUENCE_LEAD_IN; 1045 } 1046 else if (map[j] == ED_UNASSIGNED) { 1047 key_clear(el, map, p); 1048 if (arrow[i].type == XK_CMD) 1049 map[j] = arrow[i].fun.cmd; 1050 else 1051 key_add(el, p, &arrow[i].fun, arrow[i].type); 1052 } 1053 } 1054 } 1055 } 1056} 1057 1058 1059/* term__putc(): 1060 * Add a character 1061 */ 1062protected int 1063term__putc(c) 1064 int c; 1065{ 1066 return fputc(c, term_outfile); 1067} /* end term__putc */ 1068 1069 1070/* term__flush(): 1071 * Flush output 1072 */ 1073protected void 1074term__flush() 1075{ 1076 (void) fflush(term_outfile); 1077} /* end term__flush */ 1078 1079 1080/* term_telltc(): 1081 * Print the current termcap characteristics 1082 */ 1083protected int 1084/*ARGSUSED*/ 1085term_telltc(el, argc, argv) 1086 EditLine *el; 1087 int argc; 1088 char **argv; 1089{ 1090 struct termcapstr *t; 1091 char **ts; 1092 char upbuf[EL_BUFSIZ]; 1093 1094 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n"); 1095 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n"); 1096 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n", 1097 Val(T_co), Val(T_li)); 1098 (void) fprintf(el->el_outfile, 1099 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no"); 1100 (void) fprintf(el->el_outfile, 1101 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not "); 1102#ifdef notyet 1103 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n", 1104 (T_Margin&MARGIN_AUTO)? "has": "does not have"); 1105 if (T_Margin & MARGIN_AUTO) 1106 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n", 1107 (T_Margin&MARGIN_MAGIC)?"has":"does not have"); 1108#endif 1109 1110 for (t = tstr, ts = el->el_term.t_str; t->name != NULL; t++, ts++) 1111 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n", t->long_name, 1112 t->name, *ts && **ts ? 1113 key__decode_str(*ts, upbuf, "") : "(empty)"); 1114 (void) fputc('\n', el->el_outfile); 1115 return 0; 1116} 1117 1118 1119/* term_settc(): 1120 * Change the current terminal characteristics 1121 */ 1122protected int 1123/*ARGSUSED*/ 1124term_settc(el, argc, argv) 1125 EditLine *el; 1126 int argc; 1127 char **argv; 1128{ 1129 struct termcapstr *ts; 1130 struct termcapval *tv; 1131 char *what, *how; 1132 1133 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1134 return -1; 1135 1136 what = argv[1]; 1137 how = argv[2]; 1138 1139 /* 1140 * Do the strings first 1141 */ 1142 for (ts = tstr; ts->name != NULL; ts++) 1143 if (strcmp(ts->name, what) == 0) 1144 break; 1145 1146 if (ts->name != NULL) { 1147 term_alloc(el, ts, how); 1148 term_setflags(el); 1149 return 0; 1150 } 1151 1152 /* 1153 * Do the numeric ones second 1154 */ 1155 for (tv = tval; tv->name != NULL; tv++) 1156 if (strcmp(tv->name, what) == 0) 1157 break; 1158 1159 if (tv->name != NULL) { 1160 if (tv == &tval[T_pt] || tv == &tval[T_km] 1161#ifdef notyet 1162 || tv == &tval[T_am] || tv == &tval[T_xn] 1163#endif 1164 ) { 1165 if (strcmp(how, "yes") == 0) 1166 el->el_term.t_val[tv - tval] = 1; 1167 else if (strcmp(how, "no") == 0) 1168 el->el_term.t_val[tv - tval] = 0; 1169 else { 1170 (void) fprintf(el->el_errfile, "settc: Bad value `%s'.\n", how); 1171 return -1; 1172 } 1173 term_setflags(el); 1174 term_change_size(el, Val(T_li), Val(T_co)); 1175 return 0; 1176 } 1177 else { 1178 el->el_term.t_val[tv - tval] = atoi(how); 1179 el->el_term.t_size.v = Val(T_co); 1180 el->el_term.t_size.h = Val(T_li); 1181 if (tv == &tval[T_co] || tv == &tval[T_li]) 1182 term_change_size(el, Val(T_li), Val(T_co)); 1183 return 0; 1184 } 1185 } 1186 return -1; 1187} 1188 1189 1190/* term_echotc(): 1191 * Print the termcap string out with variable substitution 1192 */ 1193protected int 1194/*ARGSUSED*/ 1195term_echotc(el, argc, argv) 1196 EditLine *el; 1197 int argc; 1198 char **argv; 1199{ 1200 char *cap, *scap; 1201 int arg_need, arg_cols, arg_rows; 1202 int verbose = 0, silent = 0; 1203 char *area; 1204 static char *fmts = "%s\n", *fmtd = "%d\n"; 1205 struct termcapstr *t; 1206 char buf[TC_BUFSIZE]; 1207 1208 area = buf; 1209 1210 if (argv == NULL || argv[1] == NULL) 1211 return -1; 1212 argv++; 1213 1214 if (argv[0][0] == '-') { 1215 switch (argv[0][1]) { 1216 case 'v': 1217 verbose = 1; 1218 break; 1219 case 's': 1220 silent = 1; 1221 break; 1222 default: 1223 /* stderror(ERR_NAME | ERR_TCUSAGE); */ 1224 break; 1225 } 1226 argv++; 1227 } 1228 if (!*argv || *argv[0] == '\0') 1229 return 0; 1230 if (strcmp(*argv, "tabs") == 0) { 1231 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no"); 1232 return 0; 1233 } 1234 else if (strcmp(*argv, "meta") == 0) { 1235 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no"); 1236 return 0; 1237 } 1238#ifdef notyet 1239 else if (strcmp(*argv, "xn") == 0) { 1240 (void) fprintf(el->el_outfile, fmts, T_Margin & MARGIN_MAGIC ? 1241 "yes" : "no"); 1242 return 0; 1243 } 1244 else if (strcmp(*argv, "am") == 0) { 1245 (void) fprintf(el->el_outfile, fmts, T_Margin & MARGIN_AUTO ? 1246 "yes" : "no"); 1247 return 0; 1248 } 1249#endif 1250 else if (strcmp(*argv, "baud") == 0) { 1251 (void) fprintf(el->el_outfile, "%ld\n", el->el_tty.t_speed); 1252 return 0; 1253 } 1254 else if (strcmp(*argv, "rows") == 0 || strcmp(*argv, "lines") == 0) { 1255 (void) fprintf(el->el_outfile, fmtd, Val(T_li)); 1256 return 0; 1257 } 1258 else if (strcmp(*argv, "cols") == 0) { 1259 (void) fprintf(el->el_outfile, fmtd, Val(T_co)); 1260 return 0; 1261 } 1262 1263 /* 1264 * Try to use our local definition first 1265 */ 1266 scap = NULL; 1267 for (t = tstr; t->name != NULL; t++) 1268 if (strcmp(t->name, *argv) == 0) { 1269 scap = el->el_term.t_str[t - tstr]; 1270 break; 1271 } 1272 if (t->name == NULL) 1273 scap = tgetstr(*argv, &area); 1274 if (!scap || scap[0] == '\0') { 1275 if (!silent) 1276 (void) fprintf(el->el_errfile, 1277 "echotc: Termcap parameter `%s' not found.\n", *argv); 1278 return -1; 1279 } 1280 1281 /* 1282 * Count home many values we need for this capability. 1283 */ 1284 for (cap = scap, arg_need = 0; *cap; cap++) 1285 if (*cap == '%') 1286 switch (*++cap) { 1287 case 'd': 1288 case '2': 1289 case '3': 1290 case '.': 1291 case '+': 1292 arg_need++; 1293 break; 1294 case '%': 1295 case '>': 1296 case 'i': 1297 case 'r': 1298 case 'n': 1299 case 'B': 1300 case 'D': 1301 break; 1302 default: 1303 /* 1304 * hpux has lot's of them... 1305 */ 1306 if (verbose) 1307 (void) fprintf(el->el_errfile, 1308 "echotc: Warning: unknown termcap %% `%c'.\n", *cap); 1309 /* This is bad, but I won't complain */ 1310 break; 1311 } 1312 1313 switch (arg_need) { 1314 case 0: 1315 argv++; 1316 if (*argv && *argv[0]) { 1317 if (!silent) 1318 (void) fprintf(el->el_errfile, 1319 "echotc: Warning: Extra argument `%s'.\n", *argv); 1320 return -1; 1321 } 1322 (void) tputs(scap, 1, term__putc); 1323 break; 1324 case 1: 1325 argv++; 1326 if (!*argv || *argv[0] == '\0') { 1327 if (!silent) 1328 (void) fprintf(el->el_errfile, 1329 "echotc: Warning: Missing argument.\n"); 1330 return -1; 1331 } 1332 arg_cols = 0; 1333 arg_rows = atoi(*argv); 1334 argv++; 1335 if (*argv && *argv[0]) { 1336 if (!silent) 1337 (void) fprintf(el->el_errfile, 1338 "echotc: Warning: Extra argument `%s'.\n", *argv); 1339 return -1; 1340 } 1341 (void) tputs(tgoto(scap, arg_cols, arg_rows), 1, term__putc); 1342 break; 1343 default: 1344 /* This is wrong, but I will ignore it... */ 1345 if (verbose) 1346 (void) fprintf(el->el_errfile, 1347 "echotc: Warning: Too many required arguments (%d).\n", 1348 arg_need); 1349 /*FALLTHROUGH*/ 1350 case 2: 1351 argv++; 1352 if (!*argv || *argv[0] == '\0') { 1353 if (!silent) 1354 (void) fprintf(el->el_errfile, 1355 "echotc: Warning: Missing argument.\n"); 1356 return -1; 1357 } 1358 arg_cols = atoi(*argv); 1359 argv++; 1360 if (!*argv || *argv[0] == '\0') { 1361 if (!silent) 1362 (void) fprintf(el->el_errfile, 1363 "echotc: Warning: Missing argument.\n"); 1364 return -1; 1365 } 1366 arg_rows = atoi(*argv); 1367 argv++; 1368 if (*argv && *argv[0]) { 1369 if (!silent) 1370 (void) fprintf(el->el_errfile, 1371 "echotc: Warning: Extra argument `%s'.\n", *argv); 1372 return -1; 1373 } 1374 (void) tputs(tgoto(scap, arg_cols, arg_rows), arg_rows, term__putc); 1375 break; 1376 } 1377 return 0; 1378} 1379