1 /*- 2 * Copyright (c) 1992 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Christos Zoulas of Cornell University. 7 * 8 * %sccs.include.redist.c% 9 */ 10 11 #ifndef lint 12 static char sccsid[] = "@(#)term.c 5.1 (Berkeley) 06/22/92"; 13 #endif /* not lint */ 14 15 /* 16 * el.term.c: Editor/termcap-curses interface 17 * We have to declare a static variable here, since the 18 * termcap putchar routine does not take an argument! 19 * To do: Add the settc echotc and gettc functions 20 */ 21 #include "sys.h" 22 #include <stdio.h> 23 #include <signal.h> 24 #include <string.h> 25 #include <stdlib.h> 26 #include <unistd.h> 27 #include "termcap.h" /* XXX: should be <termcap.h> */ 28 #include <sys/types.h> 29 30 #include "el.h" 31 32 /* 33 * IMPORTANT NOTE: these routines are allowed to look at the current screen 34 * and the current possition assuming that it is correct. If this is not 35 * true, then the update will be WRONG! This is (should be) a valid 36 * assumption... 37 */ 38 39 #define TC_BUFSIZE 2048 40 41 #define GoodStr(a) (el->el_term.t_str[a] != NULL && \ 42 el->el_term.t_str[a][0] != '\0') 43 #define Str(a) el->el_term.t_str[a] 44 #define Val(a) el->el_term.t_val[a] 45 46 private struct { 47 char *b_name; 48 int b_rate; 49 } baud_rate[] = { 50 #ifdef B0 51 { "0", B0 }, 52 #endif 53 #ifdef B50 54 { "50", B50 }, 55 #endif 56 #ifdef B75 57 { "75", B75 }, 58 #endif 59 #ifdef B110 60 { "110", B110 }, 61 #endif 62 #ifdef B134 63 { "134", B134 }, 64 #endif 65 #ifdef B150 66 { "150", B150 }, 67 #endif 68 #ifdef B200 69 { "200", B200 }, 70 #endif 71 #ifdef B300 72 { "300", B300 }, 73 #endif 74 #ifdef B600 75 { "600", B600 }, 76 #endif 77 #ifdef B900 78 { "900", B900 }, 79 #endif 80 #ifdef B1200 81 { "1200", B1200 }, 82 #endif 83 #ifdef B1800 84 { "1800", B1800 }, 85 #endif 86 #ifdef B2400 87 { "2400", B2400 }, 88 #endif 89 #ifdef B3600 90 { "3600", B3600 }, 91 #endif 92 #ifdef B4800 93 { "4800", B4800 }, 94 #endif 95 #ifdef B7200 96 { "7200", B7200 }, 97 #endif 98 #ifdef B9600 99 { "9600", B9600 }, 100 #endif 101 #ifdef EXTA 102 { "19200", EXTA }, 103 #endif 104 #ifdef B19200 105 { "19200", B19200 }, 106 #endif 107 #ifdef EXTB 108 { "38400", EXTB }, 109 #endif 110 #ifdef B38400 111 { "38400", B38400 }, 112 #endif 113 { NULL, 0 } 114 }; 115 116 private struct termcapstr { 117 char *name; 118 char *long_name; 119 } tstr[] = { 120 121 #define T_al 0 122 { "al", "add new blank line" }, 123 #define T_bl 1 124 { "bl", "audible bell" }, 125 #define T_cd 2 126 { "cd", "clear to bottom" }, 127 #define T_ce 3 128 { "ce", "clear to end of line" }, 129 #define T_ch 4 130 { "ch", "cursor to horiz pos" }, 131 #define T_cl 5 132 { "cl", "clear screen" }, 133 #define T_dc 6 134 { "dc", "delete a character" }, 135 #define T_dl 7 136 { "dl", "delete a line" }, 137 #define T_dm 8 138 { "dm", "start delete mode" }, 139 #define T_ed 9 140 { "ed", "end delete mode" }, 141 #define T_ei 10 142 { "ei", "end insert mode" }, 143 #define T_fs 11 144 { "fs", "cursor from status line" }, 145 #define T_ho 12 146 { "ho", "home cursor" }, 147 #define T_ic 13 148 { "ic", "insert character" }, 149 #define T_im 14 150 { "im", "start insert mode" }, 151 #define T_ip 15 152 { "ip", "insert padding" }, 153 #define T_kd 16 154 { "kd", "sends cursor down" }, 155 #define T_kl 17 156 { "kl", "sends cursor left" }, 157 #define T_kr 18 158 { "kr", "sends cursor right" }, 159 #define T_ku 19 160 { "ku", "sends cursor up" }, 161 #define T_md 20 162 { "md", "begin bold" }, 163 #define T_me 21 164 { "me", "end attributes" }, 165 #define T_nd 22 166 { "nd", "non destructive space" }, 167 #define T_se 23 168 { "se", "end standout" }, 169 #define T_so 24 170 { "so", "begin standout" }, 171 #define T_ts 25 172 { "ts", "cursor to status line" }, 173 #define T_up 26 174 { "up", "cursor up one" }, 175 #define T_us 27 176 { "us", "begin underline" }, 177 #define T_ue 28 178 { "ue", "end underline" }, 179 #define T_vb 29 180 { "vb", "visible bell" }, 181 #define T_DC 30 182 { "DC", "delete multiple chars" }, 183 #define T_DO 31 184 { "DO", "cursor down multiple" }, 185 #define T_IC 32 186 { "IC", "insert multiple chars" }, 187 #define T_LE 33 188 { "LE", "cursor left multiple" }, 189 #define T_RI 34 190 { "RI", "cursor right multiple" }, 191 #define T_UP 35 192 { "UP", "cursor up multiple" }, 193 #define T_str 36 194 { NULL, NULL } 195 }; 196 197 private struct termcapval { 198 char *name; 199 char *long_name; 200 } tval[] = { 201 #define T_pt 0 202 { "pt", "has physical tabs" }, 203 #define T_li 1 204 { "li", "Number of lines" }, 205 #define T_co 2 206 { "co", "Number of columns" }, 207 #define T_km 3 208 { "km", "Has meta key" }, 209 #define T_xt 4 210 { "xt", "Tab chars destructive" }, 211 #define T_MT 5 212 { "MT", "Has meta key" }, /* XXX? */ 213 #define T_val 6 214 { NULL, NULL, } 215 }; 216 217 /* do two or more of the attributes use me */ 218 219 private void term_rebuffer_display __P((EditLine *)); 220 private void term_free_display __P((EditLine *)); 221 private void term_alloc_display __P((EditLine *)); 222 private void term_alloc __P((EditLine *, 223 struct termcapstr *, char *)); 224 private void term_get_termcap __P((EditLine *, char *)); 225 226 227 private FILE *term_outfile = NULL; /* XXX: How do we fix that? */ 228 229 230 /* term_setflags(): 231 * Set the terminal capability flags 232 */ 233 private void 234 term_setflags(el) 235 EditLine *el; 236 { 237 EL_FLAGS = 0; 238 if (el->el_tty.t_tabs) 239 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0; 240 241 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0; 242 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0; 243 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0; 244 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ? 245 TERM_CAN_INSERT : 0; 246 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0; 247 248 if (GoodStr(T_me) && GoodStr(T_ue)) 249 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ? TERM_CAN_ME : 0; 250 else 251 EL_FLAGS &= ~TERM_CAN_ME; 252 if (GoodStr(T_me) && GoodStr(T_se)) 253 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ? TERM_CAN_ME : 0; 254 255 256 #ifdef DEBUG_SCREEN 257 if (!EL_CAN_UP) { 258 (void) fprintf(el->el_errfile, "WARNING: Your terminal cannot move up.\n"); 259 (void) fprintf(el->el_errfile, "Editing may be odd for long lines.\n"); 260 } 261 if (!EL_CAN_CEOL) 262 (void) fprintf(el->el_errfile, "no clear EOL capability.\n"); 263 if (!EL_CAN_DELETE) 264 (void) fprintf(el->el_errfile, "no delete char capability.\n"); 265 if (!EL_CAN_INSERT) 266 (void) fprintf(el->el_errfile, "no insert char capability.\n"); 267 #endif /* DEBUG_SCREEN */ 268 } 269 270 271 /* term_init(): 272 * Initialize the terminal stuff 273 */ 274 protected int 275 term_init(el) 276 EditLine *el; 277 { 278 el->el_term.t_buf = (char *) el_malloc(TC_BUFSIZE); 279 el->el_term.t_cap = (char *) el_malloc(TC_BUFSIZE); 280 el->el_term.t_loc = 0; 281 el->el_term.t_str = (char **) el_malloc(T_str * sizeof(char*)); 282 (void) memset(el->el_term.t_str, 0, T_str * sizeof(char*)); 283 el->el_term.t_val = (int *) el_malloc(T_val * sizeof(int)); 284 (void) memset(el->el_term.t_val, 0, T_val * sizeof(char*)); 285 term_outfile = el->el_outfile; 286 term_get_termcap(el, NULL); 287 return 0; 288 } 289 290 /* term_end(): 291 * Clean up the terminal stuff 292 */ 293 protected void 294 term_end(el) 295 EditLine *el; 296 { 297 el_free((ptr_t) el->el_term.t_buf); 298 el->el_term.t_buf = NULL; 299 el_free((ptr_t) el->el_term.t_cap); 300 el->el_term.t_cap = NULL; 301 el->el_term.t_loc = 0; 302 el_free((ptr_t) el->el_term.t_str); 303 el->el_term.t_str = NULL; 304 el_free((ptr_t) el->el_term.t_val); 305 el->el_term.t_val = NULL; 306 term_free_display(el); 307 } 308 309 310 /* term_alloc(): 311 * Maintain a string pool for termcap strings 312 */ 313 private void 314 term_alloc(el, t, cap) 315 EditLine *el; 316 struct termcapstr *t; 317 char *cap; 318 { 319 char termbuf[TC_BUFSIZE]; 320 int tlen, clen; 321 char **tlist = el->el_term.t_str; 322 char **tmp, **str = &tlist[t - tstr]; 323 324 if (cap == NULL || *cap == '\0') { 325 *str = NULL; 326 return; 327 } 328 else 329 clen = strlen(cap); 330 331 tlen = *str == NULL ? 0 : strlen(*str); 332 333 /* 334 * New string is shorter; no need to allocate space 335 */ 336 if (clen <= tlen) { 337 (void) strcpy(*str, cap); 338 return; 339 } 340 341 /* 342 * New string is longer; see if we have enough space to append 343 */ 344 if (el->el_term.t_loc + 3 < TC_BUFSIZE) { 345 (void) strcpy(*str = &el->el_term.t_buf[el->el_term.t_loc], cap); 346 el->el_term.t_loc += clen + 1; /* one for \0 */ 347 return; 348 } 349 350 /* 351 * Compact our buffer; no need to check compaction, cause we know it 352 * fits... 353 */ 354 tlen = 0; 355 for (tmp = tlist; tmp < &tlist[T_str]; tmp++) 356 if (*tmp != NULL && *tmp != '\0' && *tmp != *str) { 357 char *ptr; 358 359 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++) 360 continue; 361 termbuf[tlen++] = '\0'; 362 } 363 memcpy(el->el_term.t_buf, termbuf, TC_BUFSIZE); 364 el->el_term.t_loc = tlen; 365 if (el->el_term.t_loc + 3 >= TC_BUFSIZE) { 366 (void) fprintf(el->el_errfile, "Out of termcap string space.\n"); 367 return; 368 } 369 (void) strcpy(*str = &el->el_term.t_buf[el->el_term.t_loc], cap); 370 el->el_term.t_loc += clen + 1; /* one for \0 */ 371 return; 372 } /* end term_alloc */ 373 374 375 /* term_rebuffer_display(): 376 * Rebuffer the display after the screen changed size 377 */ 378 private void 379 term_rebuffer_display(el) 380 EditLine *el; 381 { 382 coord_t *c = &el->el_term.t_size; 383 384 term_free_display(el); 385 386 /* make this public, -1 to avoid wraps */ 387 c->h = Val(T_co) - 1; 388 c->v = (EL_BUFSIZ * 4) / c->h + 1; 389 390 term_alloc_display(el); 391 } /* end term_rebuffer_display */ 392 393 394 /* term_alloc_display(): 395 * Allocate a new display. 396 */ 397 private void 398 term_alloc_display(el) 399 EditLine *el; 400 { 401 int i; 402 char **b; 403 coord_t *c = &el->el_term.t_size; 404 405 b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1))); 406 for (i = 0; i < c->v; i++) 407 b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1))); 408 b[c->v] = NULL; 409 el->el_display = b; 410 411 b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1))); 412 for (i = 0; i < c->v; i++) 413 b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1))); 414 b[c->v] = NULL; 415 el->el_vdisplay = b; 416 417 } /* end term_alloc_display */ 418 419 420 /* term_free_display(): 421 * Free the display buffers 422 */ 423 private void 424 term_free_display(el) 425 EditLine *el; 426 { 427 char **b; 428 char **bufp; 429 430 b = el->el_display; 431 el->el_display = NULL; 432 if (b != NULL) { 433 for (bufp = b; *bufp != NULL; bufp++) 434 el_free((ptr_t) *bufp); 435 el_free((ptr_t) b); 436 } 437 b = el->el_vdisplay; 438 el->el_vdisplay = NULL; 439 if (b != NULL) { 440 for (bufp = b; *bufp != NULL; bufp++) 441 el_free((ptr_t) * bufp); 442 el_free((ptr_t) b); 443 } 444 } /* end term_free_display */ 445 446 447 /* term_move_to_line(): 448 * move to line <where> (first line == 0) 449 * as efficiently as possible 450 */ 451 protected void 452 term_move_to_line(el, where) 453 EditLine *el; 454 int where; 455 { 456 int del, i; 457 458 if (where == el->el_cursor.v) 459 return; 460 461 if (where > el->el_term.t_size.v) { 462 #ifdef DEBUG_SCREEN 463 (void) fprintf(el->el_errfile, 464 "term_move_to_line: where is ridiculous: %d\r\n", where); 465 #endif /* DEBUG_SCREEN */ 466 return; 467 } 468 469 if ((del = where - el->el_cursor.v) > 0) { 470 if ((del > 1) && GoodStr(T_DO)) 471 (void) tputs(tgoto(Str(T_DO), del, del), del, term__putc); 472 else { 473 for (i = 0; i < del; i++) 474 term__putc('\n'); 475 el->el_cursor.h = 0; /* because the \n will become \r\n */ 476 } 477 } 478 else { /* del < 0 */ 479 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up))) 480 (void) tputs(tgoto(Str(T_UP), -del, -del), -del, term__putc); 481 else { 482 if (GoodStr(T_up)) 483 for (i = 0; i < -del; i++) 484 (void) tputs(Str(T_up), 1, term__putc); 485 } 486 } 487 el->el_cursor.v = where; /* now where is here */ 488 } /* end term_move_to_line */ 489 490 491 /* term_move_to_char(): 492 * Move to the character position specified 493 */ 494 protected void 495 term_move_to_char(el, where) 496 EditLine *el; 497 int where; 498 { 499 int del, i; 500 501 mc_again: 502 if (where == el->el_cursor.h) 503 return; 504 505 if (where > (el->el_term.t_size.h + 1)) { 506 #ifdef DEBUG_SCREEN 507 (void) fprintf(el->el_errfile, 508 "term_move_to_char: where is riduculous: %d\r\n", where); 509 #endif /* DEBUG_SCREEN */ 510 return; 511 } 512 513 if (!where) { /* if where is first column */ 514 term__putc('\r'); /* do a CR */ 515 el->el_cursor.h = 0; 516 return; 517 } 518 519 del = where - el->el_cursor.h; 520 521 if ((del < -4 || del > 4) && GoodStr(T_ch)) 522 /* go there directly */ 523 (void) tputs(tgoto(Str(T_ch), where, where), where, term__putc); 524 else { 525 if (del > 0) { /* moving forward */ 526 if ((del > 4) && GoodStr(T_RI)) 527 (void) tputs(tgoto(Str(T_RI), del, del), del, term__putc); 528 else { 529 if (EL_CAN_TAB) { /* if I can do tabs, use them */ 530 if ((el->el_cursor.h & 0370) != (where & 0370)) { 531 /* if not within tab stop */ 532 for (i = (el->el_cursor.h & 0370); 533 i < (where & 0370); i += 8) 534 term__putc('\t'); /* then tab over */ 535 el->el_cursor.h = where & 0370; 536 } 537 } 538 /* it's usually cheaper to just write the chars, so we do. */ 539 540 /* NOTE THAT term_overwrite() WILL CHANGE el->el_cursor.h!!! */ 541 term_overwrite(el, 542 &el->el_display[el->el_cursor.v][el->el_cursor.h], 543 where - el->el_cursor.h); 544 545 } 546 } 547 else { /* del < 0 := moving backward */ 548 if ((-del > 4) && GoodStr(T_LE)) 549 (void) tputs(tgoto(Str(T_LE), -del, -del), -del, term__putc); 550 else { /* can't go directly there */ 551 /* if the "cost" is greater than the "cost" from col 0 */ 552 if (EL_CAN_TAB ? (-del > ((where >> 3) + (where & 07))) 553 : (-del > where)) { 554 term__putc('\r'); /* do a CR */ 555 el->el_cursor.h = 0; 556 goto mc_again; /* and try again */ 557 } 558 for (i = 0; i < -del; i++) 559 term__putc('\b'); 560 } 561 } 562 } 563 el->el_cursor.h = where; /* now where is here */ 564 } /* end term_move_to_char */ 565 566 567 /* term_overwrite(): 568 * Overstrike num characters 569 */ 570 protected void 571 term_overwrite(el, cp, n) 572 EditLine *el; 573 char *cp; 574 int n; 575 { 576 if (n <= 0) 577 return; /* catch bugs */ 578 579 if (n > (el->el_term.t_size.h + 1)) { 580 #ifdef DEBUG_SCREEN 581 (void) fprintf(el->el_errfile, "term_overwrite: n is riduculous: %d\r\n", n); 582 #endif /* DEBUG_SCREEN */ 583 return; 584 } 585 586 do { 587 term__putc(*cp++); 588 el->el_cursor.h++; 589 } while (--n); 590 } /* end term_overwrite */ 591 592 593 /* term_deletechars(): 594 * Delete num characters 595 */ 596 protected void 597 term_deletechars(el, num) 598 EditLine *el; 599 int num; 600 { 601 if (num <= 0) 602 return; 603 604 if (!EL_CAN_DELETE) { 605 #ifdef DEBUG_EDIT 606 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n"); 607 #endif /* DEBUG_EDIT */ 608 return; 609 } 610 611 if (num > el->el_term.t_size.h) { 612 #ifdef DEBUG_SCREEN 613 (void) fprintf(el->el_errfile, 614 "term_deletechars: num is riduculous: %d\r\n", num); 615 #endif /* DEBUG_SCREEN */ 616 return; 617 } 618 619 if (GoodStr(T_DC)) /* if I have multiple delete */ 620 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more expen. */ 621 (void) tputs(tgoto(Str(T_DC), num, num), num, term__putc); 622 return; 623 } 624 625 if (GoodStr(T_dm)) /* if I have delete mode */ 626 (void) tputs(Str(T_dm), 1, term__putc); 627 628 if (GoodStr(T_dc)) /* else do one at a time */ 629 while (num--) 630 (void) tputs(Str(T_dc), 1, term__putc); 631 632 if (GoodStr(T_ed)) /* if I have delete mode */ 633 (void) tputs(Str(T_ed), 1, term__putc); 634 } /* end term_deletechars */ 635 636 637 /* term_insertwrite(): 638 * Puts terminal in insert character mode or inserts num 639 * characters in the line 640 */ 641 protected void 642 term_insertwrite(el, cp, num) 643 EditLine *el; 644 char *cp; 645 int num; 646 { 647 if (num <= 0) 648 return; 649 if (!EL_CAN_INSERT) { 650 #ifdef DEBUG_EDIT 651 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n"); 652 #endif /* DEBUG_EDIT */ 653 return; 654 } 655 656 if (num > el->el_term.t_size.h) { 657 #ifdef DEBUG_SCREEN 658 (void) fprintf(el->el_errfile, "StartInsert: num is riduculous: %d\r\n", num); 659 #endif /* DEBUG_SCREEN */ 660 return; 661 } 662 663 if (GoodStr(T_IC)) /* if I have multiple insert */ 664 if ((num > 1) || !GoodStr(T_ic)) { /* if ic would be more expen. */ 665 (void) tputs(tgoto(Str(T_IC), num, num), num, term__putc); 666 term_overwrite(el, cp, num); /* this updates el_cursor.h */ 667 return; 668 } 669 670 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */ 671 (void) tputs(Str(T_im), 1, term__putc); 672 673 el->el_cursor.h += num; 674 do 675 term__putc(*cp++); 676 while (--num); 677 678 if (GoodStr(T_ip)) /* have to make num chars insert */ 679 (void) tputs(Str(T_ip), 1, term__putc); 680 681 (void) tputs(Str(T_ei), 1, term__putc); 682 return; 683 } 684 685 do { 686 if (GoodStr(T_ic)) /* have to make num chars insert */ 687 (void) tputs(Str(T_ic), 1, term__putc); /* insert a char */ 688 689 term__putc(*cp++); 690 691 el->el_cursor.h++; 692 693 if (GoodStr(T_ip)) /* have to make num chars insert */ 694 (void) tputs(Str(T_ip), 1, term__putc);/* pad the inserted char */ 695 696 } while (--num); 697 } /* end term_insertwrite */ 698 699 700 /* term_clear_EOL(): 701 * clear to end of line. There are num characters to clear 702 */ 703 protected void 704 term_clear_EOL(el, num) 705 EditLine *el; 706 int num; 707 { 708 int i; 709 710 if (EL_CAN_CEOL && GoodStr(T_ce)) 711 (void) tputs(Str(T_ce), 1, term__putc); 712 else { 713 for (i = 0; i < num; i++) 714 term__putc(' '); 715 el->el_cursor.h += num; /* have written num spaces */ 716 } 717 } /* end term_clear_EOL */ 718 719 720 /* term_clear_screen(): 721 * Clear the screen 722 */ 723 protected void 724 term_clear_screen(el) 725 EditLine *el; 726 { /* clear the whole screen and home */ 727 if (GoodStr(T_cl)) 728 /* send the clear screen code */ 729 (void) tputs(Str(T_cl), Val(T_li), term__putc); 730 else if (GoodStr(T_ho) && GoodStr(T_cd)) { 731 (void) tputs(Str(T_ho), Val(T_li), term__putc); /* home */ 732 /* clear to bottom of screen */ 733 (void) tputs(Str(T_cd), Val(T_li), term__putc); 734 } 735 else { 736 term__putc('\r'); 737 term__putc('\n'); 738 } 739 } /* end term_clear_screen */ 740 741 742 /* term_beep(): 743 * Beep the way the terminal wants us 744 */ 745 protected void 746 term_beep(el) 747 EditLine *el; 748 { 749 if (GoodStr(T_vb)) 750 (void) tputs(Str(T_vb), 1, term__putc); /* visible bell */ 751 else if (GoodStr(T_bl)) 752 /* what termcap says we should use */ 753 (void) tputs(Str(T_bl), 1, term__putc); 754 else 755 term__putc('\007'); /* an ASCII bell; ^G */ 756 } /* end term_beep */ 757 758 759 #ifdef notdef 760 /* term_clear_to_bottom(): 761 * Clear to the bottom of the screen 762 */ 763 protected void 764 term_clear_to_bottom(el) 765 EditLine *el; 766 { 767 if (GoodStr(T_cd)) 768 (void) tputs(Str(T_cd), Val(T_li), term__putc); 769 else if (GoodStr(T_ce)) 770 (void) tputs(Str(T_ce), Val(T_li), term__putc); 771 } /* end term_clear_to_bottom */ 772 #endif 773 774 775 /* term_get_termcap(): 776 * Read in the terminal capabilities 777 */ 778 private void 779 term_get_termcap(el, term) 780 EditLine *el; 781 char *term; 782 { 783 int i; 784 char buf[TC_BUFSIZE]; 785 char *area; 786 struct termcapstr *t; 787 sigset_t oset, nset; 788 int lins, cols; 789 790 (void) sigemptyset(&nset); 791 (void) sigaddset(&nset, SIGWINCH); 792 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 793 794 area = buf; 795 796 797 if (term == NULL) 798 term = getenv("TERM"); 799 800 if (!term || !term[0]) 801 term = "dumb"; 802 803 memset(el->el_term.t_cap, 0, TC_BUFSIZE); 804 805 i = tgetent(el->el_term.t_cap, term); 806 807 if (i <= 0) { 808 if (i == -1) 809 (void) fprintf(el->el_errfile, "Cannot open /etc/termcap.\n"); 810 else if (i == 0) 811 (void) fprintf(el->el_errfile, 812 "No entry for terminal type \"%s\"\n", term); 813 (void) fprintf(el->el_errfile, "using dumb terminal settings.\n"); 814 Val(T_co) = 80; /* do a dumb terminal */ 815 Val(T_pt) = Val(T_km) = Val(T_li) = 0; 816 Val(T_xt) = Val(T_MT); 817 for (t = tstr; t->name != NULL; t++) 818 term_alloc(el, t, NULL); 819 } 820 else { 821 /* Can we tab */ 822 Val(T_pt) = tgetflag("pt"); 823 Val(T_xt) = tgetflag("xt"); 824 /* do we have a meta? */ 825 Val(T_km) = tgetflag("km"); 826 Val(T_MT) = tgetflag("MT"); 827 /* Get the size */ 828 Val(T_co) = tgetnum("co"); 829 Val(T_li) = tgetnum("li"); 830 for (t = tstr; t->name != NULL; t++) 831 term_alloc(el, t, tgetstr(t->name, &area)); 832 } 833 834 if (Val(T_co) < 2) 835 Val(T_co) = 80; /* just in case */ 836 if (Val(T_li) < 1) 837 Val(T_li) = 24; 838 839 el->el_term.t_size.v = Val(T_co); 840 el->el_term.t_size.h = Val(T_li); 841 842 term_setflags(el); 843 844 (void) term_get_size(el, &lins, &cols);/* get the correct window size */ 845 term_change_size(el, lins, cols); 846 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 847 term_bind_arrows(el); 848 } /* end term_get_termcap */ 849 850 851 /* term_get_size(): 852 * Return the new window size in lines and cols, and 853 * true if the size was changed. 854 */ 855 protected int 856 term_get_size(el, lins, cols) 857 EditLine *el; 858 int *lins, *cols; 859 { 860 861 *cols = Val(T_co); 862 *lins = Val(T_li); 863 864 #ifdef TIOCGWINSZ 865 { 866 struct winsize ws; 867 if (ioctl(el->el_infd, TIOCGWINSZ, (ioctl_t) &ws) != -1) { 868 if (ws.ws_col) 869 *cols = ws.ws_col; 870 if (ws.ws_row) 871 *lins = ws.ws_row; 872 } 873 } 874 #endif 875 #ifdef TIOCGSIZE 876 { 877 struct ttysize ts; 878 if (ioctl(el->el_infd, TIOCGSIZE, (ioctl_t) &ts) != -1) { 879 if (ts.ts_cols) 880 *cols = ts.ts_cols; 881 if (ts.ts_lines) 882 *lins = ts.ts_lines; 883 } 884 } 885 #endif 886 return (Val(T_co) != *cols || Val(T_li) != *lins); 887 } /* end term_get_size */ 888 889 890 /* term_change_size(): 891 * Change the size of the terminal 892 */ 893 protected void 894 term_change_size(el, lins, cols) 895 EditLine *el; 896 int lins, cols; 897 { 898 /* 899 * Just in case 900 */ 901 Val(T_co) = (cols < 2) ? 80 : cols; 902 Val(T_li) = (lins < 1) ? 24 : lins; 903 904 term_rebuffer_display(el); /* re-make display buffers */ 905 re_clear_display(el); 906 } /* end term_change_size */ 907 908 909 /* term_bind_arrows(): 910 * Bind the arrow keys 911 */ 912 protected void 913 term_bind_arrows(el) 914 EditLine *el; 915 { 916 el_action_t *map, *dmap; 917 int i, j; 918 char *p; 919 static struct { 920 int key, fun; 921 } ar[] = 922 { 923 { T_kd, ED_NEXT_HISTORY }, 924 { T_ku, ED_PREV_HISTORY }, 925 { T_kl, ED_PREV_CHAR }, 926 { T_kr, ED_NEXT_CHAR } 927 }; 928 929 /* Check if the components needed are initialized */ 930 if (el->el_term.t_buf == NULL || el->el_map.key == NULL) 931 return; 932 933 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key; 934 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs; 935 936 for (i = 0; i < 4; i++) { 937 p = el->el_term.t_str[ar[i].key]; 938 if (p && *p) { 939 j = (unsigned char) *p; 940 /* 941 * Assign the arrow keys only if: 942 * 943 * 1. They are multi-character arrow keys and the user 944 * has not re-assigned the leading character, or 945 * has re-assigned the leading character to be 946 * ED_SEQUENCE_LEAD_IN 947 * 2. They are single arrow keys pointing to an unassigned key. 948 */ 949 if (p[1] && (dmap[j] == map[j] || map[j] == ED_SEQUENCE_LEAD_IN)) { 950 key_add(el, p, key_map_cmd(el, ar[i].fun), XK_CMD); 951 map[j] = ED_SEQUENCE_LEAD_IN; 952 } 953 else if (map[j] == ED_UNASSIGNED) { 954 key_clear(el, map, p); 955 map[j] = ar[i].fun; 956 } 957 } 958 } 959 } 960 961 962 /* term__putc(): 963 * Add a character 964 */ 965 protected void 966 term__putc(c) 967 int c; 968 { 969 (void) fputc(c, term_outfile); 970 } /* end term__putc */ 971 972 973 /* term__flush(): 974 * Flush output 975 */ 976 protected void 977 term__flush() 978 { 979 (void) fflush(term_outfile); 980 } /* end term__flush */ 981 982 983 /* term_telltc(): 984 * Print the current termcap characteristics 985 */ 986 protected int 987 /*ARGSUSED*/ 988 term_telltc(el, argc, argv) 989 EditLine *el; 990 int argc; 991 char **argv; 992 { 993 struct termcapstr *t; 994 char **ts; 995 char upbuf[EL_BUFSIZ]; 996 997 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n"); 998 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n"); 999 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n", 1000 Val(T_co), Val(T_li)); 1001 (void) fprintf(el->el_outfile, 1002 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no"); 1003 (void) fprintf(el->el_outfile, 1004 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not "); 1005 #ifdef notyet 1006 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n", 1007 (T_Margin&MARGIN_AUTO)? "has": "does not have"); 1008 if (T_Margin & MARGIN_AUTO) 1009 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n", 1010 (T_Margin&MARGIN_MAGIC)?"has":"does not have"); 1011 #endif 1012 1013 for (t = tstr, ts = el->el_term.t_str; t->name != NULL; t++, ts++) 1014 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n", t->long_name, 1015 t->name, *ts && **ts ? 1016 key__decode_str(*ts, upbuf, "") : "(empty)"); 1017 (void) fputc('\n', el->el_outfile); 1018 return 0; 1019 } 1020 1021 1022 /* term_settc(): 1023 * Change the current terminal characteristics 1024 */ 1025 protected int 1026 /*ARGSUSED*/ 1027 term_settc(el, argc, argv) 1028 EditLine *el; 1029 int argc; 1030 char **argv; 1031 { 1032 struct termcapstr *ts; 1033 struct termcapval *tv; 1034 char *what, *how; 1035 1036 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1037 return -1; 1038 1039 what = argv[1]; 1040 how = argv[2]; 1041 1042 /* 1043 * Do the strings first 1044 */ 1045 for (ts = tstr; ts->name != NULL; ts++) 1046 if (strcmp(ts->name, what) == 0) 1047 break; 1048 1049 if (ts->name != NULL) { 1050 term_alloc(el, ts, how); 1051 term_setflags(el); 1052 return 0; 1053 } 1054 1055 /* 1056 * Do the numeric ones second 1057 */ 1058 for (tv = tval; tv->name != NULL; tv++) 1059 if (strcmp(tv->name, what) == 0) 1060 break; 1061 1062 if (tv->name != NULL) { 1063 if (tv == &tval[T_pt] || tv == &tval[T_km] 1064 #ifdef notyet 1065 || tv == &tval[T_am] || tv == &tval[T_xn] 1066 #endif 1067 ) { 1068 if (strcmp(how, "yes") == 0) 1069 el->el_term.t_val[tv - tval] = 1; 1070 else if (strcmp(how, "no") == 0) 1071 el->el_term.t_val[tv - tval] = 0; 1072 else { 1073 (void) fprintf(el->el_errfile, "settc: Bad value `%s'.\n", how); 1074 return -1; 1075 } 1076 term_setflags(el); 1077 term_change_size(el, Val(T_li), Val(T_co)); 1078 return 0; 1079 } 1080 else { 1081 el->el_term.t_val[tv - tval] = atoi(how); 1082 el->el_term.t_size.v = Val(T_co); 1083 el->el_term.t_size.h = Val(T_li); 1084 if (tv == &tval[T_co] || tv == &tval[T_li]) 1085 term_change_size(el, Val(T_li), Val(T_co)); 1086 return 0; 1087 } 1088 } 1089 return -1; 1090 } 1091 1092 1093 /* term_echotc(): 1094 * Print the termcap string out with variable substitution 1095 */ 1096 protected int 1097 /*ARGSUSED*/ 1098 term_echotc(el, argc, argv) 1099 EditLine *el; 1100 int argc; 1101 char **argv; 1102 { 1103 char *cap, *scap; 1104 int arg_need, arg_cols, arg_rows; 1105 int verbose = 0, silent = 0; 1106 char *area; 1107 static char *fmts = "%s\n", *fmtd = "%d\n"; 1108 struct termcapstr *t; 1109 char buf[TC_BUFSIZE]; 1110 1111 area = buf; 1112 1113 if (argv == NULL || argv[1] == NULL) 1114 return -1; 1115 argv++; 1116 1117 if (argv[0][0] == '-') { 1118 switch (argv[0][1]) { 1119 case 'v': 1120 verbose = 1; 1121 break; 1122 case 's': 1123 silent = 1; 1124 break; 1125 default: 1126 /* stderror(ERR_NAME | ERR_TCUSAGE); */ 1127 break; 1128 } 1129 argv++; 1130 } 1131 if (!*argv || *argv[0] == '\0') 1132 return 0; 1133 if (strcmp(*argv, "tabs") == 0) { 1134 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no"); 1135 return 0; 1136 } 1137 else if (strcmp(*argv, "meta") == 0) { 1138 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no"); 1139 return 0; 1140 } 1141 #ifdef notyet 1142 else if (strcmp(*argv, "xn") == 0) { 1143 (void) fprintf(el->el_outfile, fmts, T_Margin & MARGIN_MAGIC ? 1144 "yes" : "no"); 1145 return 0; 1146 } 1147 else if (strcmp(*argv, "am") == 0) { 1148 (void) fprintf(el->el_outfile, fmts, T_Margin & MARGIN_AUTO ? 1149 "yes" : "no"); 1150 return 0; 1151 } 1152 #endif 1153 else if (strcmp(*argv, "baud") == 0) { 1154 int i; 1155 1156 for (i = 0; baud_rate[i].b_name != NULL; i++) 1157 if (el->el_tty.t_speed == baud_rate[i].b_rate) { 1158 (void) fprintf(el->el_outfile, fmts, baud_rate[i].b_name); 1159 return 0; 1160 } 1161 (void) fprintf(el->el_outfile, fmtd, 0); 1162 return 0; 1163 } 1164 else if (strcmp(*argv, "rows") == 0 || strcmp(*argv, "lines") == 0) { 1165 (void) fprintf(el->el_outfile, fmtd, Val(T_li)); 1166 return 0; 1167 } 1168 else if (strcmp(*argv, "cols") == 0) { 1169 (void) fprintf(el->el_outfile, fmtd, Val(T_co)); 1170 return 0; 1171 } 1172 1173 /* 1174 * Try to use our local definition first 1175 */ 1176 scap = NULL; 1177 for (t = tstr; t->name != NULL; t++) 1178 if (strcmp(t->name, *argv) == 0) { 1179 scap = el->el_term.t_str[t - tstr]; 1180 break; 1181 } 1182 if (t->name == NULL) 1183 scap = tgetstr(*argv, &area); 1184 if (!scap || scap[0] == '\0') { 1185 if (!silent) 1186 (void) fprintf(el->el_errfile, 1187 "echotc: Termcap parameter `%s' not found.\n", *argv); 1188 return -1; 1189 } 1190 1191 /* 1192 * Count home many values we need for this capability. 1193 */ 1194 for (cap = scap, arg_need = 0; *cap; cap++) 1195 if (*cap == '%') 1196 switch (*++cap) { 1197 case 'd': 1198 case '2': 1199 case '3': 1200 case '.': 1201 case '+': 1202 arg_need++; 1203 break; 1204 case '%': 1205 case '>': 1206 case 'i': 1207 case 'r': 1208 case 'n': 1209 case 'B': 1210 case 'D': 1211 break; 1212 default: 1213 /* 1214 * hpux has lot's of them... 1215 */ 1216 if (verbose) 1217 (void) fprintf(el->el_errfile, 1218 "echotc: Warning: unknown termcap %% `%c'.\n", *cap); 1219 /* This is bad, but I won't complain */ 1220 break; 1221 } 1222 1223 switch (arg_need) { 1224 case 0: 1225 argv++; 1226 if (*argv && *argv[0]) { 1227 if (!silent) 1228 (void) fprintf(el->el_errfile, 1229 "echotc: Warning: Extra argument `%s'.\n", *argv); 1230 return -1; 1231 } 1232 (void) tputs(scap, 1, term__putc); 1233 break; 1234 case 1: 1235 argv++; 1236 if (!*argv || *argv[0] == '\0') { 1237 if (!silent) 1238 (void) fprintf(el->el_errfile, 1239 "echotc: Warning: Missing argument.\n"); 1240 return -1; 1241 } 1242 arg_cols = 0; 1243 arg_rows = atoi(*argv); 1244 argv++; 1245 if (*argv && *argv[0]) { 1246 if (!silent) 1247 (void) fprintf(el->el_errfile, 1248 "echotc: Warning: Extra argument `%s'.\n", *argv); 1249 return -1; 1250 } 1251 (void) tputs(tgoto(scap, arg_cols, arg_rows), 1, term__putc); 1252 break; 1253 default: 1254 /* This is wrong, but I will ignore it... */ 1255 if (verbose) 1256 (void) fprintf(el->el_errfile, 1257 "echotc: Warning: Too many required arguments (%d).\n", 1258 arg_need); 1259 /*FALLTHROUGH*/ 1260 case 2: 1261 argv++; 1262 if (!*argv || *argv[0] == '\0') { 1263 if (!silent) 1264 (void) fprintf(el->el_errfile, 1265 "echotc: Warning: Missing argument.\n"); 1266 return -1; 1267 } 1268 arg_cols = atoi(*argv); 1269 argv++; 1270 if (!*argv || *argv[0] == '\0') { 1271 if (!silent) 1272 (void) fprintf(el->el_errfile, 1273 "echotc: Warning: Missing argument.\n"); 1274 return -1; 1275 } 1276 arg_rows = atoi(*argv); 1277 argv++; 1278 if (*argv && *argv[0]) { 1279 if (!silent) 1280 (void) fprintf(el->el_errfile, 1281 "echotc: Warning: Extra argument `%s'.\n", *argv); 1282 return -1; 1283 } 1284 (void) tputs(tgoto(scap, arg_cols, arg_rows), arg_rows, term__putc); 1285 break; 1286 } 1287 return 0; 1288 } 1289