terminal.c revision 41421
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#include <sys/ioctl.h> 55 56#include "el.h" 57 58/* 59 * IMPORTANT NOTE: these routines are allowed to look at the current screen 60 * and the current possition assuming that it is correct. If this is not 61 * true, then the update will be WRONG! This is (should be) a valid 62 * assumption... 63 */ 64 65#define TC_BUFSIZE 2048 66 67#define GoodStr(a) (el->el_term.t_str[a] != NULL && \ 68 el->el_term.t_str[a][0] != '\0') 69#define Str(a) el->el_term.t_str[a] 70#define Val(a) el->el_term.t_val[a] 71 72private struct termcapstr { 73 char *name; 74 char *long_name; 75} tstr[] = { 76 77#define T_al 0 78 { "al", "add new blank line" }, 79#define T_bl 1 80 { "bl", "audible bell" }, 81#define T_cd 2 82 { "cd", "clear to bottom" }, 83#define T_ce 3 84 { "ce", "clear to end of line" }, 85#define T_ch 4 86 { "ch", "cursor to horiz pos" }, 87#define T_cl 5 88 { "cl", "clear screen" }, 89#define T_dc 6 90 { "dc", "delete a character" }, 91#define T_dl 7 92 { "dl", "delete a line" }, 93#define T_dm 8 94 { "dm", "start delete mode" }, 95#define T_ed 9 96 { "ed", "end delete mode" }, 97#define T_ei 10 98 { "ei", "end insert mode" }, 99#define T_fs 11 100 { "fs", "cursor from status line" }, 101#define T_ho 12 102 { "ho", "home cursor" }, 103#define T_ic 13 104 { "ic", "insert character" }, 105#define T_im 14 106 { "im", "start insert mode" }, 107#define T_ip 15 108 { "ip", "insert padding" }, 109#define T_kd 16 110 { "kd", "sends cursor down" }, 111#define T_kl 17 112 { "kl", "sends cursor left" }, 113#define T_kr 18 114 { "kr", "sends cursor right" }, 115#define T_ku 19 116 { "ku", "sends cursor up" }, 117#define T_md 20 118 { "md", "begin bold" }, 119#define T_me 21 120 { "me", "end attributes" }, 121#define T_nd 22 122 { "nd", "non destructive space" }, 123#define T_se 23 124 { "se", "end standout" }, 125#define T_so 24 126 { "so", "begin standout" }, 127#define T_ts 25 128 { "ts", "cursor to status line" }, 129#define T_up 26 130 { "up", "cursor up one" }, 131#define T_us 27 132 { "us", "begin underline" }, 133#define T_ue 28 134 { "ue", "end underline" }, 135#define T_vb 29 136 { "vb", "visible bell" }, 137#define T_DC 30 138 { "DC", "delete multiple chars" }, 139#define T_DO 31 140 { "DO", "cursor down multiple" }, 141#define T_IC 32 142 { "IC", "insert multiple chars" }, 143#define T_LE 33 144 { "LE", "cursor left multiple" }, 145#define T_RI 34 146 { "RI", "cursor right multiple" }, 147#define T_UP 35 148 { "UP", "cursor up multiple" }, 149#define T_str 36 150 { NULL, NULL } 151}; 152 153private struct termcapval { 154 char *name; 155 char *long_name; 156} tval[] = { 157#define T_pt 0 158 { "pt", "has physical tabs" }, 159#define T_li 1 160 { "li", "Number of lines" }, 161#define T_co 2 162 { "co", "Number of columns" }, 163#define T_km 3 164 { "km", "Has meta key" }, 165#define T_xt 4 166 { "xt", "Tab chars destructive" }, 167#define T_MT 5 168 { "MT", "Has meta key" }, /* XXX? */ 169#define T_val 6 170 { NULL, NULL, } 171}; 172 173/* do two or more of the attributes use me */ 174 175private void term_rebuffer_display __P((EditLine *)); 176private void term_free_display __P((EditLine *)); 177private void term_alloc_display __P((EditLine *)); 178private void term_alloc __P((EditLine *, 179 struct termcapstr *, char *)); 180private void term_init_arrow __P((EditLine *)); 181private void term_reset_arrow __P((EditLine *)); 182 183 184private FILE *term_outfile = NULL; /* XXX: How do we fix that? */ 185 186 187/* term_setflags(): 188 * Set the terminal capability flags 189 */ 190private void 191term_setflags(el) 192 EditLine *el; 193{ 194 EL_FLAGS = 0; 195 if (el->el_tty.t_tabs) 196 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0; 197 198 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0; 199 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0; 200 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0; 201 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ? 202 TERM_CAN_INSERT : 0; 203 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0; 204 205 if (GoodStr(T_me) && GoodStr(T_ue)) 206 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ? TERM_CAN_ME : 0; 207 else 208 EL_FLAGS &= ~TERM_CAN_ME; 209 if (GoodStr(T_me) && GoodStr(T_se)) 210 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ? TERM_CAN_ME : 0; 211 212 213#ifdef DEBUG_SCREEN 214 if (!EL_CAN_UP) { 215 (void) fprintf(el->el_errfile, "WARNING: Your terminal cannot move up.\n"); 216 (void) fprintf(el->el_errfile, "Editing may be odd for long lines.\n"); 217 } 218 if (!EL_CAN_CEOL) 219 (void) fprintf(el->el_errfile, "no clear EOL capability.\n"); 220 if (!EL_CAN_DELETE) 221 (void) fprintf(el->el_errfile, "no delete char capability.\n"); 222 if (!EL_CAN_INSERT) 223 (void) fprintf(el->el_errfile, "no insert char capability.\n"); 224#endif /* DEBUG_SCREEN */ 225} 226 227 228/* term_init(): 229 * Initialize the terminal stuff 230 */ 231protected int 232term_init(el) 233 EditLine *el; 234{ 235 el->el_term.t_buf = (char *) el_malloc(TC_BUFSIZE); 236 el->el_term.t_cap = (char *) el_malloc(TC_BUFSIZE); 237 el->el_term.t_fkey = (fkey_t *) el_malloc(4 * sizeof(fkey_t)); 238 (void) memset(el->el_term.t_fkey, 0, 4 * sizeof(fkey_t)); 239 el->el_term.t_loc = 0; 240 el->el_term.t_str = (char **) el_malloc(T_str * sizeof(char*)); 241 (void) memset(el->el_term.t_str, 0, T_str * sizeof(char*)); 242 el->el_term.t_val = (int *) el_malloc(T_val * sizeof(int)); 243 (void) memset(el->el_term.t_val, 0, T_val * sizeof(int)); 244 term_outfile = el->el_outfile; 245 (void) term_set(el, NULL); 246 term_init_arrow(el); 247 return 0; 248} 249 250/* term_end(): 251 * Clean up the terminal stuff 252 */ 253protected void 254term_end(el) 255 EditLine *el; 256{ 257 el_free((ptr_t) el->el_term.t_buf); 258 el->el_term.t_buf = NULL; 259 el_free((ptr_t) el->el_term.t_cap); 260 el->el_term.t_cap = NULL; 261 el->el_term.t_loc = 0; 262 el_free((ptr_t) el->el_term.t_str); 263 el->el_term.t_str = NULL; 264 el_free((ptr_t) el->el_term.t_val); 265 el->el_term.t_val = NULL; 266 term_free_display(el); 267} 268 269 270/* term_alloc(): 271 * Maintain a string pool for termcap strings 272 */ 273private void 274term_alloc(el, t, cap) 275 EditLine *el; 276 struct termcapstr *t; 277 char *cap; 278{ 279 char termbuf[TC_BUFSIZE]; 280 int tlen, clen; 281 char **tlist = el->el_term.t_str; 282 char **tmp, **str = &tlist[t - tstr]; 283 284 if (cap == NULL || *cap == '\0') { 285 *str = NULL; 286 return; 287 } 288 else 289 clen = strlen(cap); 290 291 tlen = *str == NULL ? 0 : strlen(*str); 292 293 /* 294 * New string is shorter; no need to allocate space 295 */ 296 if (clen <= tlen) { 297 (void)strcpy(*str, cap); /* XXX strcpy is safe */ 298 return; 299 } 300 301 /* 302 * New string is longer; see if we have enough space to append 303 */ 304 if (el->el_term.t_loc + 3 < TC_BUFSIZE) { 305 /* XXX strcpy is safe */ 306 (void)strcpy(*str = &el->el_term.t_buf[el->el_term.t_loc], cap); 307 el->el_term.t_loc += clen + 1; /* one for \0 */ 308 return; 309 } 310 311 /* 312 * Compact our buffer; no need to check compaction, cause we know it 313 * fits... 314 */ 315 tlen = 0; 316 for (tmp = tlist; tmp < &tlist[T_str]; tmp++) 317 if (*tmp != NULL && *tmp != '\0' && *tmp != *str) { 318 char *ptr; 319 320 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++) 321 continue; 322 termbuf[tlen++] = '\0'; 323 } 324 memcpy(el->el_term.t_buf, termbuf, TC_BUFSIZE); 325 el->el_term.t_loc = tlen; 326 if (el->el_term.t_loc + 3 >= TC_BUFSIZE) { 327 (void) fprintf(el->el_errfile, "Out of termcap string space.\n"); 328 return; 329 } 330 /* XXX strcpy is safe */ 331 (void)strcpy(*str = &el->el_term.t_buf[el->el_term.t_loc], cap); 332 el->el_term.t_loc += clen + 1; /* one for \0 */ 333 return; 334} /* end term_alloc */ 335 336 337/* term_rebuffer_display(): 338 * Rebuffer the display after the screen changed size 339 */ 340private void 341term_rebuffer_display(el) 342 EditLine *el; 343{ 344 coord_t *c = &el->el_term.t_size; 345 346 term_free_display(el); 347 348 /* make this public, -1 to avoid wraps */ 349 c->h = Val(T_co) - 1; 350 c->v = (EL_BUFSIZ * 4) / c->h + 1; 351 352 term_alloc_display(el); 353} /* end term_rebuffer_display */ 354 355 356/* term_alloc_display(): 357 * Allocate a new display. 358 */ 359private void 360term_alloc_display(el) 361 EditLine *el; 362{ 363 int i; 364 char **b; 365 coord_t *c = &el->el_term.t_size; 366 367 b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1))); 368 for (i = 0; i < c->v; i++) 369 b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1))); 370 b[c->v] = NULL; 371 el->el_display = b; 372 373 b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1))); 374 for (i = 0; i < c->v; i++) 375 b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1))); 376 b[c->v] = NULL; 377 el->el_vdisplay = b; 378 379} /* end term_alloc_display */ 380 381 382/* term_free_display(): 383 * Free the display buffers 384 */ 385private void 386term_free_display(el) 387 EditLine *el; 388{ 389 char **b; 390 char **bufp; 391 392 b = el->el_display; 393 el->el_display = NULL; 394 if (b != NULL) { 395 for (bufp = b; *bufp != NULL; bufp++) 396 el_free((ptr_t) *bufp); 397 el_free((ptr_t) b); 398 } 399 b = el->el_vdisplay; 400 el->el_vdisplay = NULL; 401 if (b != NULL) { 402 for (bufp = b; *bufp != NULL; bufp++) 403 el_free((ptr_t) * bufp); 404 el_free((ptr_t) b); 405 } 406} /* end term_free_display */ 407 408 409/* term_move_to_line(): 410 * move to line <where> (first line == 0) 411 * as efficiently as possible 412 */ 413protected void 414term_move_to_line(el, where) 415 EditLine *el; 416 int where; 417{ 418 int del, i; 419 420 if (where == el->el_cursor.v) 421 return; 422 423 if (where > el->el_term.t_size.v) { 424#ifdef DEBUG_SCREEN 425 (void) fprintf(el->el_errfile, 426 "term_move_to_line: where is ridiculous: %d\r\n", where); 427#endif /* DEBUG_SCREEN */ 428 return; 429 } 430 431 if ((del = where - el->el_cursor.v) > 0) { 432 if ((del > 1) && GoodStr(T_DO)) 433 (void) tputs(tgoto(Str(T_DO), del, del), del, term__putc); 434 else { 435 for (i = 0; i < del; i++) 436 term__putc('\n'); 437 el->el_cursor.h = 0; /* because the \n will become \r\n */ 438 } 439 } 440 else { /* del < 0 */ 441 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up))) 442 (void) tputs(tgoto(Str(T_UP), -del, -del), -del, term__putc); 443 else { 444 if (GoodStr(T_up)) 445 for (i = 0; i < -del; i++) 446 (void) tputs(Str(T_up), 1, term__putc); 447 } 448 } 449 el->el_cursor.v = where; /* now where is here */ 450} /* end term_move_to_line */ 451 452 453/* term_move_to_char(): 454 * Move to the character position specified 455 */ 456protected void 457term_move_to_char(el, where) 458 EditLine *el; 459 int where; 460{ 461 int del, i; 462 463mc_again: 464 if (where == el->el_cursor.h) 465 return; 466 467 if (where > (el->el_term.t_size.h + 1)) { 468#ifdef DEBUG_SCREEN 469 (void) fprintf(el->el_errfile, 470 "term_move_to_char: where is riduculous: %d\r\n", where); 471#endif /* DEBUG_SCREEN */ 472 return; 473 } 474 475 if (!where) { /* if where is first column */ 476 term__putc('\r'); /* do a CR */ 477 el->el_cursor.h = 0; 478 return; 479 } 480 481 del = where - el->el_cursor.h; 482 483 if ((del < -4 || del > 4) && GoodStr(T_ch)) 484 /* go there directly */ 485 (void) tputs(tgoto(Str(T_ch), where, where), where, term__putc); 486 else { 487 if (del > 0) { /* moving forward */ 488 if ((del > 4) && GoodStr(T_RI)) 489 (void) tputs(tgoto(Str(T_RI), del, del), del, term__putc); 490 else { 491 if (EL_CAN_TAB) { /* if I can do tabs, use them */ 492 if ((el->el_cursor.h & 0370) != (where & 0370)) { 493 /* if not within tab stop */ 494 for (i = (el->el_cursor.h & 0370); 495 i < (where & 0370); i += 8) 496 term__putc('\t'); /* then tab over */ 497 el->el_cursor.h = where & 0370; 498 } 499 } 500 /* it's usually cheaper to just write the chars, so we do. */ 501 502 /* NOTE THAT term_overwrite() WILL CHANGE el->el_cursor.h!!! */ 503 term_overwrite(el, 504 &el->el_display[el->el_cursor.v][el->el_cursor.h], 505 where - el->el_cursor.h); 506 507 } 508 } 509 else { /* del < 0 := moving backward */ 510 if ((-del > 4) && GoodStr(T_LE)) 511 (void) tputs(tgoto(Str(T_LE), -del, -del), -del, term__putc); 512 else { /* can't go directly there */ 513 /* if the "cost" is greater than the "cost" from col 0 */ 514 if (EL_CAN_TAB ? (-del > ((where >> 3) + (where & 07))) 515 : (-del > where)) { 516 term__putc('\r'); /* do a CR */ 517 el->el_cursor.h = 0; 518 goto mc_again; /* and try again */ 519 } 520 for (i = 0; i < -del; i++) 521 term__putc('\b'); 522 } 523 } 524 } 525 el->el_cursor.h = where; /* now where is here */ 526} /* end term_move_to_char */ 527 528 529/* term_overwrite(): 530 * Overstrike num characters 531 */ 532protected void 533term_overwrite(el, cp, n) 534 EditLine *el; 535 char *cp; 536 int n; 537{ 538 if (n <= 0) 539 return; /* catch bugs */ 540 541 if (n > (el->el_term.t_size.h + 1)) { 542#ifdef DEBUG_SCREEN 543 (void) fprintf(el->el_errfile, "term_overwrite: n is riduculous: %d\r\n", n); 544#endif /* DEBUG_SCREEN */ 545 return; 546 } 547 548 do { 549 term__putc(*cp++); 550 el->el_cursor.h++; 551 } while (--n); 552} /* end term_overwrite */ 553 554 555/* term_deletechars(): 556 * Delete num characters 557 */ 558protected void 559term_deletechars(el, num) 560 EditLine *el; 561 int num; 562{ 563 if (num <= 0) 564 return; 565 566 if (!EL_CAN_DELETE) { 567#ifdef DEBUG_EDIT 568 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n"); 569#endif /* DEBUG_EDIT */ 570 return; 571 } 572 573 if (num > el->el_term.t_size.h) { 574#ifdef DEBUG_SCREEN 575 (void) fprintf(el->el_errfile, 576 "term_deletechars: num is riduculous: %d\r\n", num); 577#endif /* DEBUG_SCREEN */ 578 return; 579 } 580 581 if (GoodStr(T_DC)) /* if I have multiple delete */ 582 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more expen. */ 583 (void) tputs(tgoto(Str(T_DC), num, num), num, term__putc); 584 return; 585 } 586 587 if (GoodStr(T_dm)) /* if I have delete mode */ 588 (void) tputs(Str(T_dm), 1, term__putc); 589 590 if (GoodStr(T_dc)) /* else do one at a time */ 591 while (num--) 592 (void) tputs(Str(T_dc), 1, term__putc); 593 594 if (GoodStr(T_ed)) /* if I have delete mode */ 595 (void) tputs(Str(T_ed), 1, term__putc); 596} /* end term_deletechars */ 597 598 599/* term_insertwrite(): 600 * Puts terminal in insert character mode or inserts num 601 * characters in the line 602 */ 603protected void 604term_insertwrite(el, cp, num) 605 EditLine *el; 606 char *cp; 607 int num; 608{ 609 if (num <= 0) 610 return; 611 if (!EL_CAN_INSERT) { 612#ifdef DEBUG_EDIT 613 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n"); 614#endif /* DEBUG_EDIT */ 615 return; 616 } 617 618 if (num > el->el_term.t_size.h) { 619#ifdef DEBUG_SCREEN 620 (void) fprintf(el->el_errfile, "StartInsert: num is riduculous: %d\r\n", num); 621#endif /* DEBUG_SCREEN */ 622 return; 623 } 624 625 if (GoodStr(T_IC)) /* if I have multiple insert */ 626 if ((num > 1) || !GoodStr(T_ic)) { /* if ic would be more expen. */ 627 (void) tputs(tgoto(Str(T_IC), num, num), num, term__putc); 628 term_overwrite(el, cp, num); /* this updates el_cursor.h */ 629 return; 630 } 631 632 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */ 633 (void) tputs(Str(T_im), 1, term__putc); 634 635 el->el_cursor.h += num; 636 do 637 term__putc(*cp++); 638 while (--num); 639 640 if (GoodStr(T_ip)) /* have to make num chars insert */ 641 (void) tputs(Str(T_ip), 1, term__putc); 642 643 (void) tputs(Str(T_ei), 1, term__putc); 644 return; 645 } 646 647 do { 648 if (GoodStr(T_ic)) /* have to make num chars insert */ 649 (void) tputs(Str(T_ic), 1, term__putc); /* insert a char */ 650 651 term__putc(*cp++); 652 653 el->el_cursor.h++; 654 655 if (GoodStr(T_ip)) /* have to make num chars insert */ 656 (void) tputs(Str(T_ip), 1, term__putc);/* pad the inserted char */ 657 658 } while (--num); 659} /* end term_insertwrite */ 660 661 662/* term_clear_EOL(): 663 * clear to end of line. There are num characters to clear 664 */ 665protected void 666term_clear_EOL(el, num) 667 EditLine *el; 668 int num; 669{ 670 int i; 671 672 if (EL_CAN_CEOL && GoodStr(T_ce)) 673 (void) tputs(Str(T_ce), 1, term__putc); 674 else { 675 for (i = 0; i < num; i++) 676 term__putc(' '); 677 el->el_cursor.h += num; /* have written num spaces */ 678 } 679} /* end term_clear_EOL */ 680 681 682/* term_clear_screen(): 683 * Clear the screen 684 */ 685protected void 686term_clear_screen(el) 687 EditLine *el; 688{ /* clear the whole screen and home */ 689 if (GoodStr(T_cl)) 690 /* send the clear screen code */ 691 (void) tputs(Str(T_cl), Val(T_li), term__putc); 692 else if (GoodStr(T_ho) && GoodStr(T_cd)) { 693 (void) tputs(Str(T_ho), Val(T_li), term__putc); /* home */ 694 /* clear to bottom of screen */ 695 (void) tputs(Str(T_cd), Val(T_li), term__putc); 696 } 697 else { 698 term__putc('\r'); 699 term__putc('\n'); 700 } 701} /* end term_clear_screen */ 702 703 704/* term_beep(): 705 * Beep the way the terminal wants us 706 */ 707protected void 708term_beep(el) 709 EditLine *el; 710{ 711 if (GoodStr(T_vb)) 712 (void) tputs(Str(T_vb), 1, term__putc); /* visible bell */ 713 else if (GoodStr(T_bl)) 714 /* what termcap says we should use */ 715 (void) tputs(Str(T_bl), 1, term__putc); 716 else 717 term__putc('\007'); /* an ASCII bell; ^G */ 718} /* end term_beep */ 719 720 721#ifdef notdef 722/* term_clear_to_bottom(): 723 * Clear to the bottom of the screen 724 */ 725protected void 726term_clear_to_bottom(el) 727 EditLine *el; 728{ 729 if (GoodStr(T_cd)) 730 (void) tputs(Str(T_cd), Val(T_li), term__putc); 731 else if (GoodStr(T_ce)) 732 (void) tputs(Str(T_ce), Val(T_li), term__putc); 733} /* end term_clear_to_bottom */ 734#endif 735 736 737/* term_set(): 738 * Read in the terminal capabilities from the requested terminal 739 */ 740protected int 741term_set(el, term) 742 EditLine *el; 743 char *term; 744{ 745 int i; 746 char buf[TC_BUFSIZE]; 747 char *area; 748 struct termcapstr *t; 749 sigset_t oset, nset; 750 int lins, cols; 751 752 (void) sigemptyset(&nset); 753 (void) sigaddset(&nset, SIGWINCH); 754 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 755 756 area = buf; 757 758 759 if (term == NULL) 760 term = getenv("TERM"); 761 762 if (!term || !term[0]) 763 term = "dumb"; 764 765 memset(el->el_term.t_cap, 0, TC_BUFSIZE); 766 767 i = tgetent(el->el_term.t_cap, term); 768 769 if (i <= 0) { 770 if (i == -1) 771 (void) fprintf(el->el_errfile, "Cannot read termcap database;\n"); 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 i <= 0 ? -1 : 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, "%lu\n", (u_long)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