1 /* $NetBSD: terminal.c,v 1.12 2011/11/18 20:32:00 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Christos Zoulas of Cornell University. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include "config.h" 36 #if !defined(lint) && !defined(SCCSID) 37 #if 0 38 static char sccsid[] = "@(#)term.c 8.2 (Berkeley) 4/30/95"; 39 #else 40 __RCSID("$NetBSD: terminal.c,v 1.12 2011/11/18 20:32:00 christos Exp $"); 41 #endif 42 #endif /* not lint && not SCCSID */ 43 44 /* 45 * terminal.c: Editor/termcap-curses interface 46 * We have to declare a static variable here, since the 47 * termcap putchar routine does not take an argument! 48 */ 49 #include <stdio.h> 50 #include <signal.h> 51 #include <string.h> 52 #include <stdlib.h> 53 #include <unistd.h> 54 #include <limits.h> 55 #ifdef HAVE_TERMCAP_H 56 #include <termcap.h> 57 #endif 58 #ifdef HAVE_CURSES_H 59 #include <curses.h> 60 #elif HAVE_NCURSES_H 61 #include <ncurses.h> 62 #endif 63 64 /* Solaris's term.h does horrid things. */ 65 #if defined(HAVE_TERM_H) && !defined(__sun) 66 #include <term.h> 67 #endif 68 69 #include <sys/types.h> 70 #include <sys/ioctl.h> 71 72 #ifdef _REENTRANT 73 #include <pthread.h> 74 #endif 75 76 #include "el.h" 77 78 /* 79 * IMPORTANT NOTE: these routines are allowed to look at the current screen 80 * and the current position assuming that it is correct. If this is not 81 * true, then the update will be WRONG! This is (should be) a valid 82 * assumption... 83 */ 84 85 #define TC_BUFSIZE ((size_t)2048) 86 87 #define GoodStr(a) (el->el_terminal.t_str[a] != NULL && \ 88 el->el_terminal.t_str[a][0] != '\0') 89 #define Str(a) el->el_terminal.t_str[a] 90 #define Val(a) el->el_terminal.t_val[a] 91 92 private const struct termcapstr { 93 const char *name; 94 const char *long_name; 95 } tstr[] = { 96 #define T_al 0 97 { "al", "add new blank line" }, 98 #define T_bl 1 99 { "bl", "audible bell" }, 100 #define T_cd 2 101 { "cd", "clear to bottom" }, 102 #define T_ce 3 103 { "ce", "clear to end of line" }, 104 #define T_ch 4 105 { "ch", "cursor to horiz pos" }, 106 #define T_cl 5 107 { "cl", "clear screen" }, 108 #define T_dc 6 109 { "dc", "delete a character" }, 110 #define T_dl 7 111 { "dl", "delete a line" }, 112 #define T_dm 8 113 { "dm", "start delete mode" }, 114 #define T_ed 9 115 { "ed", "end delete mode" }, 116 #define T_ei 10 117 { "ei", "end insert mode" }, 118 #define T_fs 11 119 { "fs", "cursor from status line" }, 120 #define T_ho 12 121 { "ho", "home cursor" }, 122 #define T_ic 13 123 { "ic", "insert character" }, 124 #define T_im 14 125 { "im", "start insert mode" }, 126 #define T_ip 15 127 { "ip", "insert padding" }, 128 #define T_kd 16 129 { "kd", "sends cursor down" }, 130 #define T_kl 17 131 { "kl", "sends cursor left" }, 132 #define T_kr 18 133 { "kr", "sends cursor right" }, 134 #define T_ku 19 135 { "ku", "sends cursor up" }, 136 #define T_md 20 137 { "md", "begin bold" }, 138 #define T_me 21 139 { "me", "end attributes" }, 140 #define T_nd 22 141 { "nd", "non destructive space" }, 142 #define T_se 23 143 { "se", "end standout" }, 144 #define T_so 24 145 { "so", "begin standout" }, 146 #define T_ts 25 147 { "ts", "cursor to status line" }, 148 #define T_up 26 149 { "up", "cursor up one" }, 150 #define T_us 27 151 { "us", "begin underline" }, 152 #define T_ue 28 153 { "ue", "end underline" }, 154 #define T_vb 29 155 { "vb", "visible bell" }, 156 #define T_DC 30 157 { "DC", "delete multiple chars" }, 158 #define T_DO 31 159 { "DO", "cursor down multiple" }, 160 #define T_IC 32 161 { "IC", "insert multiple chars" }, 162 #define T_LE 33 163 { "LE", "cursor left multiple" }, 164 #define T_RI 34 165 { "RI", "cursor right multiple" }, 166 #define T_UP 35 167 { "UP", "cursor up multiple" }, 168 #define T_kh 36 169 { "kh", "send cursor home" }, 170 #define T_at7 37 171 { "@7", "send cursor end" }, 172 #define T_str 38 173 { NULL, NULL } 174 }; 175 176 private const struct termcapval { 177 const char *name; 178 const char *long_name; 179 } tval[] = { 180 #define T_am 0 181 { "am", "has automatic margins" }, 182 #define T_pt 1 183 { "pt", "has physical tabs" }, 184 #define T_li 2 185 { "li", "Number of lines" }, 186 #define T_co 3 187 { "co", "Number of columns" }, 188 #define T_km 4 189 { "km", "Has meta key" }, 190 #define T_xt 5 191 { "xt", "Tab chars destructive" }, 192 #define T_xn 6 193 { "xn", "newline ignored at right margin" }, 194 #define T_MT 7 195 { "MT", "Has meta key" }, /* XXX? */ 196 #define T_val 8 197 { NULL, NULL, } 198 }; 199 /* do two or more of the attributes use me */ 200 201 private void terminal_setflags(EditLine *); 202 private int terminal_rebuffer_display(EditLine *); 203 private void terminal_free_display(EditLine *); 204 private int terminal_alloc_display(EditLine *); 205 private void terminal_alloc(EditLine *, const struct termcapstr *, 206 const char *); 207 private void terminal_init_arrow(EditLine *); 208 private void terminal_reset_arrow(EditLine *); 209 private int terminal_putc(int); 210 private void terminal_tputs(EditLine *, const char *, int); 211 212 #ifdef _REENTRANT 213 private pthread_mutex_t terminal_mutex = PTHREAD_MUTEX_INITIALIZER; 214 #endif 215 private FILE *terminal_outfile = NULL; 216 217 218 /* terminal_setflags(): 219 * Set the terminal capability flags 220 */ 221 private void 222 terminal_setflags(EditLine *el) 223 { 224 EL_FLAGS = 0; 225 if (el->el_tty.t_tabs) 226 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0; 227 228 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0; 229 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0; 230 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0; 231 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ? 232 TERM_CAN_INSERT : 0; 233 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0; 234 EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0; 235 EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0; 236 237 if (GoodStr(T_me) && GoodStr(T_ue)) 238 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ? 239 TERM_CAN_ME : 0; 240 else 241 EL_FLAGS &= ~TERM_CAN_ME; 242 if (GoodStr(T_me) && GoodStr(T_se)) 243 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ? 244 TERM_CAN_ME : 0; 245 246 247 #ifdef DEBUG_SCREEN 248 if (!EL_CAN_UP) { 249 (void) fprintf(el->el_errfile, 250 "WARNING: Your terminal cannot move up.\n"); 251 (void) fprintf(el->el_errfile, 252 "Editing may be odd for long lines.\n"); 253 } 254 if (!EL_CAN_CEOL) 255 (void) fprintf(el->el_errfile, "no clear EOL capability.\n"); 256 if (!EL_CAN_DELETE) 257 (void) fprintf(el->el_errfile, "no delete char capability.\n"); 258 if (!EL_CAN_INSERT) 259 (void) fprintf(el->el_errfile, "no insert char capability.\n"); 260 #endif /* DEBUG_SCREEN */ 261 } 262 263 /* terminal_init(): 264 * Initialize the terminal stuff 265 */ 266 protected int 267 terminal_init(EditLine *el) 268 { 269 270 el->el_terminal.t_buf = el_malloc(TC_BUFSIZE * 271 sizeof(*el->el_terminal.t_buf)); 272 if (el->el_terminal.t_buf == NULL) 273 return -1; 274 el->el_terminal.t_cap = el_malloc(TC_BUFSIZE * 275 sizeof(*el->el_terminal.t_cap)); 276 if (el->el_terminal.t_cap == NULL) 277 return -1; 278 el->el_terminal.t_fkey = el_malloc(A_K_NKEYS * 279 sizeof(*el->el_terminal.t_fkey)); 280 if (el->el_terminal.t_fkey == NULL) 281 return -1; 282 el->el_terminal.t_loc = 0; 283 el->el_terminal.t_str = el_malloc(T_str * 284 sizeof(*el->el_terminal.t_str)); 285 if (el->el_terminal.t_str == NULL) 286 return -1; 287 (void) memset(el->el_terminal.t_str, 0, T_str * 288 sizeof(*el->el_terminal.t_str)); 289 el->el_terminal.t_val = el_malloc(T_val * 290 sizeof(*el->el_terminal.t_val)); 291 if (el->el_terminal.t_val == NULL) 292 return -1; 293 (void) memset(el->el_terminal.t_val, 0, T_val * 294 sizeof(*el->el_terminal.t_val)); 295 (void) terminal_set(el, NULL); 296 terminal_init_arrow(el); 297 return 0; 298 } 299 300 /* terminal_end(): 301 * Clean up the terminal stuff 302 */ 303 protected void 304 terminal_end(EditLine *el) 305 { 306 307 el_free(el->el_terminal.t_buf); 308 el->el_terminal.t_buf = NULL; 309 el_free(el->el_terminal.t_cap); 310 el->el_terminal.t_cap = NULL; 311 el->el_terminal.t_loc = 0; 312 el_free(el->el_terminal.t_str); 313 el->el_terminal.t_str = NULL; 314 el_free(el->el_terminal.t_val); 315 el->el_terminal.t_val = NULL; 316 el_free(el->el_terminal.t_fkey); 317 el->el_terminal.t_fkey = NULL; 318 terminal_free_display(el); 319 } 320 321 322 /* terminal_alloc(): 323 * Maintain a string pool for termcap strings 324 */ 325 private void 326 terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap) 327 { 328 char termbuf[TC_BUFSIZE]; 329 size_t tlen, clen; 330 char **tlist = el->el_terminal.t_str; 331 char **tmp, **str = &tlist[t - tstr]; 332 333 (void) memset(termbuf, 0, sizeof(termbuf)); 334 if (cap == NULL || *cap == '\0') { 335 *str = NULL; 336 return; 337 } else 338 clen = strlen(cap); 339 340 tlen = *str == NULL ? 0 : strlen(*str); 341 342 /* 343 * New string is shorter; no need to allocate space 344 */ 345 if (clen <= tlen) { 346 if (*str) 347 (void) strcpy(*str, cap); /* XXX strcpy is safe */ 348 return; 349 } 350 /* 351 * New string is longer; see if we have enough space to append 352 */ 353 if (el->el_terminal.t_loc + 3 < TC_BUFSIZE) { 354 /* XXX strcpy is safe */ 355 (void) strcpy(*str = &el->el_terminal.t_buf[ 356 el->el_terminal.t_loc], cap); 357 el->el_terminal.t_loc += clen + 1; /* one for \0 */ 358 return; 359 } 360 /* 361 * Compact our buffer; no need to check compaction, cause we know it 362 * fits... 363 */ 364 tlen = 0; 365 for (tmp = tlist; tmp < &tlist[T_str]; tmp++) 366 if (*tmp != NULL && *tmp != '\0' && *tmp != *str) { 367 char *ptr; 368 369 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++) 370 continue; 371 termbuf[tlen++] = '\0'; 372 } 373 memcpy(el->el_terminal.t_buf, termbuf, TC_BUFSIZE); 374 el->el_terminal.t_loc = tlen; 375 if (el->el_terminal.t_loc + 3 >= TC_BUFSIZE) { 376 (void) fprintf(el->el_errfile, 377 "Out of termcap string space.\n"); 378 return; 379 } 380 /* XXX strcpy is safe */ 381 (void) strcpy(*str = &el->el_terminal.t_buf[el->el_terminal.t_loc], 382 cap); 383 el->el_terminal.t_loc += (size_t)clen + 1; /* one for \0 */ 384 return; 385 } 386 387 388 /* terminal_rebuffer_display(): 389 * Rebuffer the display after the screen changed size 390 */ 391 private int 392 terminal_rebuffer_display(EditLine *el) 393 { 394 coord_t *c = &el->el_terminal.t_size; 395 396 terminal_free_display(el); 397 398 c->h = Val(T_co); 399 c->v = Val(T_li); 400 401 if (terminal_alloc_display(el) == -1) 402 return -1; 403 return 0; 404 } 405 406 407 /* terminal_alloc_display(): 408 * Allocate a new display. 409 */ 410 private int 411 terminal_alloc_display(EditLine *el) 412 { 413 int i; 414 Char **b; 415 coord_t *c = &el->el_terminal.t_size; 416 417 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1)); 418 if (b == NULL) 419 return -1; 420 for (i = 0; i < c->v; i++) { 421 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1)); 422 if (b[i] == NULL) { 423 while (--i >= 0) 424 el_free(b[i]); 425 el_free(b); 426 return -1; 427 } 428 } 429 b[c->v] = NULL; 430 el->el_display = b; 431 432 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1)); 433 if (b == NULL) 434 return -1; 435 for (i = 0; i < c->v; i++) { 436 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1)); 437 if (b[i] == NULL) { 438 while (--i >= 0) 439 el_free(b[i]); 440 el_free(b); 441 return -1; 442 } 443 } 444 b[c->v] = NULL; 445 el->el_vdisplay = b; 446 return 0; 447 } 448 449 450 /* terminal_free_display(): 451 * Free the display buffers 452 */ 453 private void 454 terminal_free_display(EditLine *el) 455 { 456 Char **b; 457 Char **bufp; 458 459 b = el->el_display; 460 el->el_display = NULL; 461 if (b != NULL) { 462 for (bufp = b; *bufp != NULL; bufp++) 463 el_free(*bufp); 464 el_free(b); 465 } 466 b = el->el_vdisplay; 467 el->el_vdisplay = NULL; 468 if (b != NULL) { 469 for (bufp = b; *bufp != NULL; bufp++) 470 el_free(*bufp); 471 el_free(b); 472 } 473 } 474 475 476 /* terminal_move_to_line(): 477 * move to line <where> (first line == 0) 478 * as efficiently as possible 479 */ 480 protected void 481 terminal_move_to_line(EditLine *el, int where) 482 { 483 int del; 484 485 if (where == el->el_cursor.v) 486 return; 487 488 if (where > el->el_terminal.t_size.v) { 489 #ifdef DEBUG_SCREEN 490 (void) fprintf(el->el_errfile, 491 "terminal_move_to_line: where is ridiculous: %d\r\n", 492 where); 493 #endif /* DEBUG_SCREEN */ 494 return; 495 } 496 if ((del = where - el->el_cursor.v) > 0) { 497 while (del > 0) { 498 if (EL_HAS_AUTO_MARGINS && 499 el->el_display[el->el_cursor.v][0] != '\0') { 500 size_t h = (size_t) 501 (el->el_terminal.t_size.h - 1); 502 #ifdef WIDECHAR 503 for (; h > 0 && 504 el->el_display[el->el_cursor.v][h] == 505 MB_FILL_CHAR; 506 h--) 507 continue; 508 #endif 509 /* move without newline */ 510 terminal_move_to_char(el, (int)h); 511 terminal_overwrite(el, &el->el_display 512 [el->el_cursor.v][el->el_cursor.h], 513 (size_t)(el->el_terminal.t_size.h - 514 el->el_cursor.h)); 515 /* updates Cursor */ 516 del--; 517 } else { 518 if ((del > 1) && GoodStr(T_DO)) { 519 terminal_tputs(el, tgoto(Str(T_DO), del, 520 del), del); 521 del = 0; 522 } else { 523 for (; del > 0; del--) 524 terminal__putc(el, '\n'); 525 /* because the \n will become \r\n */ 526 el->el_cursor.h = 0; 527 } 528 } 529 } 530 } else { /* del < 0 */ 531 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up))) 532 terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del); 533 else { 534 if (GoodStr(T_up)) 535 for (; del < 0; del++) 536 terminal_tputs(el, Str(T_up), 1); 537 } 538 } 539 el->el_cursor.v = where;/* now where is here */ 540 } 541 542 543 /* terminal_move_to_char(): 544 * Move to the character position specified 545 */ 546 protected void 547 terminal_move_to_char(EditLine *el, int where) 548 { 549 int del, i; 550 551 mc_again: 552 if (where == el->el_cursor.h) 553 return; 554 555 if (where > el->el_terminal.t_size.h) { 556 #ifdef DEBUG_SCREEN 557 (void) fprintf(el->el_errfile, 558 "terminal_move_to_char: where is riduculous: %d\r\n", 559 where); 560 #endif /* DEBUG_SCREEN */ 561 return; 562 } 563 if (!where) { /* if where is first column */ 564 terminal__putc(el, '\r'); /* do a CR */ 565 el->el_cursor.h = 0; 566 return; 567 } 568 del = where - el->el_cursor.h; 569 570 if ((del < -4 || del > 4) && GoodStr(T_ch)) 571 /* go there directly */ 572 terminal_tputs(el, tgoto(Str(T_ch), where, where), where); 573 else { 574 if (del > 0) { /* moving forward */ 575 if ((del > 4) && GoodStr(T_RI)) 576 terminal_tputs(el, tgoto(Str(T_RI), del, del), 577 del); 578 else { 579 /* if I can do tabs, use them */ 580 if (EL_CAN_TAB) { 581 if ((el->el_cursor.h & 0370) != 582 (where & ~0x7) 583 #ifdef WIDECHAR 584 && (el->el_display[ 585 el->el_cursor.v][where & 0370] != 586 MB_FILL_CHAR) 587 #endif 588 ) { 589 /* if not within tab stop */ 590 for (i = 591 (el->el_cursor.h & 0370); 592 i < (where & ~0x7); 593 i += 8) 594 terminal__putc(el, 595 '\t'); 596 /* then tab over */ 597 el->el_cursor.h = where & ~0x7; 598 } 599 } 600 /* 601 * it's usually cheaper to just write the 602 * chars, so we do. 603 */ 604 /* 605 * NOTE THAT terminal_overwrite() WILL CHANGE 606 * el->el_cursor.h!!! 607 */ 608 terminal_overwrite(el, &el->el_display[ 609 el->el_cursor.v][el->el_cursor.h], 610 (size_t)(where - el->el_cursor.h)); 611 612 } 613 } else { /* del < 0 := moving backward */ 614 if ((-del > 4) && GoodStr(T_LE)) 615 terminal_tputs(el, tgoto(Str(T_LE), -del, -del), 616 -del); 617 else { /* can't go directly there */ 618 /* 619 * if the "cost" is greater than the "cost" 620 * from col 0 621 */ 622 if (EL_CAN_TAB ? 623 ((unsigned int)-del > 624 (((unsigned int) where >> 3) + 625 (where & 07))) 626 : (-del > where)) { 627 terminal__putc(el, '\r');/* do a CR */ 628 el->el_cursor.h = 0; 629 goto mc_again; /* and try again */ 630 } 631 for (i = 0; i < -del; i++) 632 terminal__putc(el, '\b'); 633 } 634 } 635 } 636 el->el_cursor.h = where; /* now where is here */ 637 } 638 639 640 /* terminal_overwrite(): 641 * Overstrike num characters 642 * Assumes MB_FILL_CHARs are present to keep the column count correct 643 */ 644 protected void 645 terminal_overwrite(EditLine *el, const Char *cp, size_t n) 646 { 647 if (n == 0) 648 return; 649 650 if (n > (size_t)el->el_terminal.t_size.h) { 651 #ifdef DEBUG_SCREEN 652 (void) fprintf(el->el_errfile, 653 "terminal_overwrite: n is riduculous: %d\r\n", n); 654 #endif /* DEBUG_SCREEN */ 655 return; 656 } 657 658 do { 659 /* terminal__putc() ignores any MB_FILL_CHARs */ 660 terminal__putc(el, *cp++); 661 el->el_cursor.h++; 662 } while (--n); 663 664 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */ 665 if (EL_HAS_AUTO_MARGINS) { /* yes */ 666 el->el_cursor.h = 0; 667 el->el_cursor.v++; 668 if (EL_HAS_MAGIC_MARGINS) { 669 /* force the wrap to avoid the "magic" 670 * situation */ 671 Char c; 672 if ((c = el->el_display[el->el_cursor.v] 673 [el->el_cursor.h]) != '\0') { 674 terminal_overwrite(el, &c, (size_t)1); 675 #ifdef WIDECHAR 676 while (el->el_display[el->el_cursor.v] 677 [el->el_cursor.h] == MB_FILL_CHAR) 678 el->el_cursor.h++; 679 #endif 680 } else { 681 terminal__putc(el, ' '); 682 el->el_cursor.h = 1; 683 } 684 } 685 } else /* no wrap, but cursor stays on screen */ 686 el->el_cursor.h = el->el_terminal.t_size.h - 1; 687 } 688 } 689 690 691 /* terminal_deletechars(): 692 * Delete num characters 693 */ 694 protected void 695 terminal_deletechars(EditLine *el, int num) 696 { 697 if (num <= 0) 698 return; 699 700 if (!EL_CAN_DELETE) { 701 #ifdef DEBUG_EDIT 702 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n"); 703 #endif /* DEBUG_EDIT */ 704 return; 705 } 706 if (num > el->el_terminal.t_size.h) { 707 #ifdef DEBUG_SCREEN 708 (void) fprintf(el->el_errfile, 709 "terminal_deletechars: num is riduculous: %d\r\n", num); 710 #endif /* DEBUG_SCREEN */ 711 return; 712 } 713 if (GoodStr(T_DC)) /* if I have multiple delete */ 714 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more 715 * expen. */ 716 terminal_tputs(el, tgoto(Str(T_DC), num, num), num); 717 return; 718 } 719 if (GoodStr(T_dm)) /* if I have delete mode */ 720 terminal_tputs(el, Str(T_dm), 1); 721 722 if (GoodStr(T_dc)) /* else do one at a time */ 723 while (num--) 724 terminal_tputs(el, Str(T_dc), 1); 725 726 if (GoodStr(T_ed)) /* if I have delete mode */ 727 terminal_tputs(el, Str(T_ed), 1); 728 } 729 730 731 /* terminal_insertwrite(): 732 * Puts terminal in insert character mode or inserts num 733 * characters in the line 734 * Assumes MB_FILL_CHARs are present to keep column count correct 735 */ 736 protected void 737 terminal_insertwrite(EditLine *el, Char *cp, int num) 738 { 739 if (num <= 0) 740 return; 741 if (!EL_CAN_INSERT) { 742 #ifdef DEBUG_EDIT 743 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n"); 744 #endif /* DEBUG_EDIT */ 745 return; 746 } 747 if (num > el->el_terminal.t_size.h) { 748 #ifdef DEBUG_SCREEN 749 (void) fprintf(el->el_errfile, 750 "StartInsert: num is riduculous: %d\r\n", num); 751 #endif /* DEBUG_SCREEN */ 752 return; 753 } 754 if (GoodStr(T_IC)) /* if I have multiple insert */ 755 if ((num > 1) || !GoodStr(T_ic)) { 756 /* if ic would be more expensive */ 757 terminal_tputs(el, tgoto(Str(T_IC), num, num), num); 758 terminal_overwrite(el, cp, (size_t)num); 759 /* this updates el_cursor.h */ 760 return; 761 } 762 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */ 763 terminal_tputs(el, Str(T_im), 1); 764 765 el->el_cursor.h += num; 766 do 767 terminal__putc(el, *cp++); 768 while (--num); 769 770 if (GoodStr(T_ip)) /* have to make num chars insert */ 771 terminal_tputs(el, Str(T_ip), 1); 772 773 terminal_tputs(el, Str(T_ei), 1); 774 return; 775 } 776 do { 777 if (GoodStr(T_ic)) /* have to make num chars insert */ 778 terminal_tputs(el, Str(T_ic), 1); 779 780 terminal__putc(el, *cp++); 781 782 el->el_cursor.h++; 783 784 if (GoodStr(T_ip)) /* have to make num chars insert */ 785 terminal_tputs(el, Str(T_ip), 1); 786 /* pad the inserted char */ 787 788 } while (--num); 789 } 790 791 792 /* terminal_clear_EOL(): 793 * clear to end of line. There are num characters to clear 794 */ 795 protected void 796 terminal_clear_EOL(EditLine *el, int num) 797 { 798 int i; 799 800 if (EL_CAN_CEOL && GoodStr(T_ce)) 801 terminal_tputs(el, Str(T_ce), 1); 802 else { 803 for (i = 0; i < num; i++) 804 terminal__putc(el, ' '); 805 el->el_cursor.h += num; /* have written num spaces */ 806 } 807 } 808 809 810 /* terminal_clear_screen(): 811 * Clear the screen 812 */ 813 protected void 814 terminal_clear_screen(EditLine *el) 815 { /* clear the whole screen and home */ 816 817 if (GoodStr(T_cl)) 818 /* send the clear screen code */ 819 terminal_tputs(el, Str(T_cl), Val(T_li)); 820 else if (GoodStr(T_ho) && GoodStr(T_cd)) { 821 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */ 822 /* clear to bottom of screen */ 823 terminal_tputs(el, Str(T_cd), Val(T_li)); 824 } else { 825 terminal__putc(el, '\r'); 826 terminal__putc(el, '\n'); 827 } 828 } 829 830 831 /* terminal_beep(): 832 * Beep the way the terminal wants us 833 */ 834 protected void 835 terminal_beep(EditLine *el) 836 { 837 if (GoodStr(T_bl)) 838 /* what termcap says we should use */ 839 terminal_tputs(el, Str(T_bl), 1); 840 else 841 terminal__putc(el, '\007'); /* an ASCII bell; ^G */ 842 } 843 844 845 protected void 846 terminal_get(EditLine *el, const char **term) 847 { 848 *term = el->el_terminal.t_name; 849 } 850 851 852 /* terminal_set(): 853 * Read in the terminal capabilities from the requested terminal 854 */ 855 protected int 856 terminal_set(EditLine *el, const char *term) 857 { 858 int i; 859 char buf[TC_BUFSIZE]; 860 char *area; 861 const struct termcapstr *t; 862 sigset_t oset, nset; 863 int lins, cols; 864 865 (void) sigemptyset(&nset); 866 (void) sigaddset(&nset, SIGWINCH); 867 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 868 869 area = buf; 870 871 872 if (term == NULL) 873 term = getenv("TERM"); 874 875 if (!term || !term[0]) 876 term = "dumb"; 877 878 if (strcmp(term, "emacs") == 0) 879 el->el_flags |= EDIT_DISABLED; 880 881 (void) memset(el->el_terminal.t_cap, 0, TC_BUFSIZE); 882 883 i = tgetent(el->el_terminal.t_cap, term); 884 885 if (i <= 0) { 886 if (i == -1) 887 (void) fprintf(el->el_errfile, 888 "Cannot read termcap database;\n"); 889 else if (i == 0) 890 (void) fprintf(el->el_errfile, 891 "No entry for terminal type \"%s\";\n", term); 892 (void) fprintf(el->el_errfile, 893 "using dumb terminal settings.\n"); 894 Val(T_co) = 80; /* do a dumb terminal */ 895 Val(T_pt) = Val(T_km) = Val(T_li) = 0; 896 Val(T_xt) = Val(T_MT); 897 for (t = tstr; t->name != NULL; t++) 898 terminal_alloc(el, t, NULL); 899 } else { 900 /* auto/magic margins */ 901 Val(T_am) = tgetflag("am"); 902 Val(T_xn) = tgetflag("xn"); 903 /* Can we tab */ 904 Val(T_pt) = tgetflag("pt"); 905 Val(T_xt) = tgetflag("xt"); 906 /* do we have a meta? */ 907 Val(T_km) = tgetflag("km"); 908 Val(T_MT) = tgetflag("MT"); 909 /* Get the size */ 910 Val(T_co) = tgetnum("co"); 911 Val(T_li) = tgetnum("li"); 912 for (t = tstr; t->name != NULL; t++) { 913 /* XXX: some systems' tgetstr needs non const */ 914 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name), 915 &area)); 916 } 917 } 918 919 if (Val(T_co) < 2) 920 Val(T_co) = 80; /* just in case */ 921 if (Val(T_li) < 1) 922 Val(T_li) = 24; 923 924 el->el_terminal.t_size.v = Val(T_co); 925 el->el_terminal.t_size.h = Val(T_li); 926 927 terminal_setflags(el); 928 929 /* get the correct window size */ 930 (void) terminal_get_size(el, &lins, &cols); 931 if (terminal_change_size(el, lins, cols) == -1) 932 return -1; 933 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 934 terminal_bind_arrow(el); 935 el->el_terminal.t_name = term; 936 return i <= 0 ? -1 : 0; 937 } 938 939 940 /* terminal_get_size(): 941 * Return the new window size in lines and cols, and 942 * true if the size was changed. 943 */ 944 protected int 945 terminal_get_size(EditLine *el, int *lins, int *cols) 946 { 947 948 *cols = Val(T_co); 949 *lins = Val(T_li); 950 951 #ifdef TIOCGWINSZ 952 { 953 struct winsize ws; 954 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) { 955 if (ws.ws_col) 956 *cols = ws.ws_col; 957 if (ws.ws_row) 958 *lins = ws.ws_row; 959 } 960 } 961 #endif 962 #ifdef TIOCGSIZE 963 { 964 struct ttysize ts; 965 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) { 966 if (ts.ts_cols) 967 *cols = ts.ts_cols; 968 if (ts.ts_lines) 969 *lins = ts.ts_lines; 970 } 971 } 972 #endif 973 return Val(T_co) != *cols || Val(T_li) != *lins; 974 } 975 976 977 /* terminal_change_size(): 978 * Change the size of the terminal 979 */ 980 protected int 981 terminal_change_size(EditLine *el, int lins, int cols) 982 { 983 /* 984 * Just in case 985 */ 986 Val(T_co) = (cols < 2) ? 80 : cols; 987 Val(T_li) = (lins < 1) ? 24 : lins; 988 989 /* re-make display buffers */ 990 if (terminal_rebuffer_display(el) == -1) 991 return -1; 992 re_clear_display(el); 993 return 0; 994 } 995 996 997 /* terminal_init_arrow(): 998 * Initialize the arrow key bindings from termcap 999 */ 1000 private void 1001 terminal_init_arrow(EditLine *el) 1002 { 1003 funckey_t *arrow = el->el_terminal.t_fkey; 1004 1005 arrow[A_K_DN].name = STR("down"); 1006 arrow[A_K_DN].key = T_kd; 1007 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY; 1008 arrow[A_K_DN].type = XK_CMD; 1009 1010 arrow[A_K_UP].name = STR("up"); 1011 arrow[A_K_UP].key = T_ku; 1012 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY; 1013 arrow[A_K_UP].type = XK_CMD; 1014 1015 arrow[A_K_LT].name = STR("left"); 1016 arrow[A_K_LT].key = T_kl; 1017 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR; 1018 arrow[A_K_LT].type = XK_CMD; 1019 1020 arrow[A_K_RT].name = STR("right"); 1021 arrow[A_K_RT].key = T_kr; 1022 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR; 1023 arrow[A_K_RT].type = XK_CMD; 1024 1025 arrow[A_K_HO].name = STR("home"); 1026 arrow[A_K_HO].key = T_kh; 1027 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG; 1028 arrow[A_K_HO].type = XK_CMD; 1029 1030 arrow[A_K_EN].name = STR("end"); 1031 arrow[A_K_EN].key = T_at7; 1032 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END; 1033 arrow[A_K_EN].type = XK_CMD; 1034 } 1035 1036 1037 /* terminal_reset_arrow(): 1038 * Reset arrow key bindings 1039 */ 1040 private void 1041 terminal_reset_arrow(EditLine *el) 1042 { 1043 funckey_t *arrow = el->el_terminal.t_fkey; 1044 static const Char strA[] = {033, '[', 'A', '\0'}; 1045 static const Char strB[] = {033, '[', 'B', '\0'}; 1046 static const Char strC[] = {033, '[', 'C', '\0'}; 1047 static const Char strD[] = {033, '[', 'D', '\0'}; 1048 static const Char strH[] = {033, '[', 'H', '\0'}; 1049 static const Char strF[] = {033, '[', 'F', '\0'}; 1050 static const Char stOA[] = {033, 'O', 'A', '\0'}; 1051 static const Char stOB[] = {033, 'O', 'B', '\0'}; 1052 static const Char stOC[] = {033, 'O', 'C', '\0'}; 1053 static const Char stOD[] = {033, 'O', 'D', '\0'}; 1054 static const Char stOH[] = {033, 'O', 'H', '\0'}; 1055 static const Char stOF[] = {033, 'O', 'F', '\0'}; 1056 1057 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1058 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1059 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1060 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1061 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1062 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1063 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1064 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1065 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1066 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1067 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1068 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1069 1070 if (el->el_map.type != MAP_VI) 1071 return; 1072 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1073 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1074 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1075 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1076 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1077 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1078 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1079 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1080 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1081 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1082 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1083 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1084 } 1085 1086 1087 /* terminal_set_arrow(): 1088 * Set an arrow key binding 1089 */ 1090 protected int 1091 terminal_set_arrow(EditLine *el, const Char *name, keymacro_value_t *fun, 1092 int type) 1093 { 1094 funckey_t *arrow = el->el_terminal.t_fkey; 1095 int i; 1096 1097 for (i = 0; i < A_K_NKEYS; i++) 1098 if (Strcmp(name, arrow[i].name) == 0) { 1099 arrow[i].fun = *fun; 1100 arrow[i].type = type; 1101 return 0; 1102 } 1103 return -1; 1104 } 1105 1106 1107 /* terminal_clear_arrow(): 1108 * Clear an arrow key binding 1109 */ 1110 protected int 1111 terminal_clear_arrow(EditLine *el, const Char *name) 1112 { 1113 funckey_t *arrow = el->el_terminal.t_fkey; 1114 int i; 1115 1116 for (i = 0; i < A_K_NKEYS; i++) 1117 if (Strcmp(name, arrow[i].name) == 0) { 1118 arrow[i].type = XK_NOD; 1119 return 0; 1120 } 1121 return -1; 1122 } 1123 1124 1125 /* terminal_print_arrow(): 1126 * Print the arrow key bindings 1127 */ 1128 protected void 1129 terminal_print_arrow(EditLine *el, const Char *name) 1130 { 1131 int i; 1132 funckey_t *arrow = el->el_terminal.t_fkey; 1133 1134 for (i = 0; i < A_K_NKEYS; i++) 1135 if (*name == '\0' || Strcmp(name, arrow[i].name) == 0) 1136 if (arrow[i].type != XK_NOD) 1137 keymacro_kprint(el, arrow[i].name, 1138 &arrow[i].fun, arrow[i].type); 1139 } 1140 1141 1142 /* terminal_bind_arrow(): 1143 * Bind the arrow keys 1144 */ 1145 protected void 1146 terminal_bind_arrow(EditLine *el) 1147 { 1148 el_action_t *map; 1149 const el_action_t *dmap; 1150 int i, j; 1151 char *p; 1152 funckey_t *arrow = el->el_terminal.t_fkey; 1153 1154 /* Check if the components needed are initialized */ 1155 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL) 1156 return; 1157 1158 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key; 1159 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs; 1160 1161 terminal_reset_arrow(el); 1162 1163 for (i = 0; i < A_K_NKEYS; i++) { 1164 Char wt_str[VISUAL_WIDTH_MAX]; 1165 Char *px; 1166 size_t n; 1167 1168 p = el->el_terminal.t_str[arrow[i].key]; 1169 if (!p || !*p) 1170 continue; 1171 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n) 1172 wt_str[n] = p[n]; 1173 while (n < VISUAL_WIDTH_MAX) 1174 wt_str[n++] = '\0'; 1175 px = wt_str; 1176 j = (unsigned char) *p; 1177 /* 1178 * Assign the arrow keys only if: 1179 * 1180 * 1. They are multi-character arrow keys and the user 1181 * has not re-assigned the leading character, or 1182 * has re-assigned the leading character to be 1183 * ED_SEQUENCE_LEAD_IN 1184 * 2. They are single arrow keys pointing to an 1185 * unassigned key. 1186 */ 1187 if (arrow[i].type == XK_NOD) 1188 keymacro_clear(el, map, px); 1189 else { 1190 if (p[1] && (dmap[j] == map[j] || 1191 map[j] == ED_SEQUENCE_LEAD_IN)) { 1192 keymacro_add(el, px, &arrow[i].fun, 1193 arrow[i].type); 1194 map[j] = ED_SEQUENCE_LEAD_IN; 1195 } else if (map[j] == ED_UNASSIGNED) { 1196 keymacro_clear(el, map, px); 1197 if (arrow[i].type == XK_CMD) 1198 map[j] = arrow[i].fun.cmd; 1199 else 1200 keymacro_add(el, px, &arrow[i].fun, 1201 arrow[i].type); 1202 } 1203 } 1204 } 1205 } 1206 1207 /* terminal_putc(): 1208 * Add a character 1209 */ 1210 private int 1211 terminal_putc(int c) 1212 { 1213 if (terminal_outfile == NULL) 1214 return -1; 1215 return fputc(c, terminal_outfile); 1216 } 1217 1218 private void 1219 terminal_tputs(EditLine *el, const char *cap, int affcnt) 1220 { 1221 #ifdef _REENTRANT 1222 pthread_mutex_lock(&terminal_mutex); 1223 #endif 1224 terminal_outfile = el->el_outfile; 1225 (void)tputs(cap, affcnt, terminal_putc); 1226 #ifdef _REENTRANT 1227 pthread_mutex_unlock(&terminal_mutex); 1228 #endif 1229 } 1230 1231 /* terminal__putc(): 1232 * Add a character 1233 */ 1234 protected int 1235 terminal__putc(EditLine *el, Int c) 1236 { 1237 char buf[MB_LEN_MAX +1]; 1238 ssize_t i; 1239 if (c == (Int)MB_FILL_CHAR) 1240 return 0; 1241 i = ct_encode_char(buf, (size_t)MB_LEN_MAX, c); 1242 if (i <= 0) 1243 return (int)i; 1244 buf[i] = '\0'; 1245 return fputs(buf, el->el_outfile); 1246 } 1247 1248 /* terminal__flush(): 1249 * Flush output 1250 */ 1251 protected void 1252 terminal__flush(EditLine *el) 1253 { 1254 1255 (void) fflush(el->el_outfile); 1256 } 1257 1258 /* terminal_writec(): 1259 * Write the given character out, in a human readable form 1260 */ 1261 protected void 1262 terminal_writec(EditLine *el, Int c) 1263 { 1264 Char visbuf[VISUAL_WIDTH_MAX +1]; 1265 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c); 1266 if (vcnt < 0) 1267 vcnt = 0; 1268 visbuf[vcnt] = '\0'; 1269 terminal_overwrite(el, visbuf, (size_t)vcnt); 1270 terminal__flush(el); 1271 } 1272 1273 1274 /* terminal_telltc(): 1275 * Print the current termcap characteristics 1276 */ 1277 protected int 1278 /*ARGSUSED*/ 1279 terminal_telltc(EditLine *el, int argc __attribute__((__unused__)), 1280 const Char **argv __attribute__((__unused__))) 1281 { 1282 const struct termcapstr *t; 1283 char **ts; 1284 1285 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n"); 1286 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n"); 1287 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n", 1288 Val(T_co), Val(T_li)); 1289 (void) fprintf(el->el_outfile, 1290 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no"); 1291 (void) fprintf(el->el_outfile, 1292 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not "); 1293 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n", 1294 EL_HAS_AUTO_MARGINS ? "has" : "does not have"); 1295 if (EL_HAS_AUTO_MARGINS) 1296 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n", 1297 EL_HAS_MAGIC_MARGINS ? "has" : "does not have"); 1298 1299 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) { 1300 const char *ub; 1301 if (*ts && **ts) { 1302 ub = ct_encode_string(ct_visual_string( 1303 ct_decode_string(*ts, &el->el_scratch)), 1304 &el->el_scratch); 1305 } else { 1306 ub = "(empty)"; 1307 } 1308 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n", 1309 t->long_name, t->name, ub); 1310 } 1311 (void) fputc('\n', el->el_outfile); 1312 return 0; 1313 } 1314 1315 1316 /* terminal_settc(): 1317 * Change the current terminal characteristics 1318 */ 1319 protected int 1320 /*ARGSUSED*/ 1321 terminal_settc(EditLine *el, int argc __attribute__((__unused__)), 1322 const Char **argv) 1323 { 1324 const struct termcapstr *ts; 1325 const struct termcapval *tv; 1326 char what[8], how[8]; 1327 1328 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1329 return -1; 1330 1331 strncpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what)); 1332 what[sizeof(what) - 1] = '\0'; 1333 strncpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how)); 1334 how[sizeof(how) - 1] = '\0'; 1335 1336 /* 1337 * Do the strings first 1338 */ 1339 for (ts = tstr; ts->name != NULL; ts++) 1340 if (strcmp(ts->name, what) == 0) 1341 break; 1342 1343 if (ts->name != NULL) { 1344 terminal_alloc(el, ts, how); 1345 terminal_setflags(el); 1346 return 0; 1347 } 1348 /* 1349 * Do the numeric ones second 1350 */ 1351 for (tv = tval; tv->name != NULL; tv++) 1352 if (strcmp(tv->name, what) == 0) 1353 break; 1354 1355 if (tv->name != NULL) 1356 return -1; 1357 1358 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1359 tv == &tval[T_am] || tv == &tval[T_xn]) { 1360 if (strcmp(how, "yes") == 0) 1361 el->el_terminal.t_val[tv - tval] = 1; 1362 else if (strcmp(how, "no") == 0) 1363 el->el_terminal.t_val[tv - tval] = 0; 1364 else { 1365 (void) fprintf(el->el_errfile, 1366 "" FSTR ": Bad value `%s'.\n", argv[0], how); 1367 return -1; 1368 } 1369 terminal_setflags(el); 1370 if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1) 1371 return -1; 1372 return 0; 1373 } else { 1374 long i; 1375 char *ep; 1376 1377 i = strtol(how, &ep, 10); 1378 if (*ep != '\0') { 1379 (void) fprintf(el->el_errfile, 1380 "" FSTR ": Bad value `%s'.\n", argv[0], how); 1381 return -1; 1382 } 1383 el->el_terminal.t_val[tv - tval] = (int) i; 1384 el->el_terminal.t_size.v = Val(T_co); 1385 el->el_terminal.t_size.h = Val(T_li); 1386 if (tv == &tval[T_co] || tv == &tval[T_li]) 1387 if (terminal_change_size(el, Val(T_li), Val(T_co)) 1388 == -1) 1389 return -1; 1390 return 0; 1391 } 1392 } 1393 1394 1395 /* terminal_gettc(): 1396 * Get the current terminal characteristics 1397 */ 1398 protected int 1399 /*ARGSUSED*/ 1400 terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv) 1401 { 1402 const struct termcapstr *ts; 1403 const struct termcapval *tv; 1404 char *what; 1405 void *how; 1406 1407 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1408 return -1; 1409 1410 what = argv[1]; 1411 how = argv[2]; 1412 1413 /* 1414 * Do the strings first 1415 */ 1416 for (ts = tstr; ts->name != NULL; ts++) 1417 if (strcmp(ts->name, what) == 0) 1418 break; 1419 1420 if (ts->name != NULL) { 1421 *(char **)how = el->el_terminal.t_str[ts - tstr]; 1422 return 0; 1423 } 1424 /* 1425 * Do the numeric ones second 1426 */ 1427 for (tv = tval; tv->name != NULL; tv++) 1428 if (strcmp(tv->name, what) == 0) 1429 break; 1430 1431 if (tv->name == NULL) 1432 return -1; 1433 1434 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1435 tv == &tval[T_am] || tv == &tval[T_xn]) { 1436 static char yes[] = "yes"; 1437 static char no[] = "no"; 1438 if (el->el_terminal.t_val[tv - tval]) 1439 *(char **)how = yes; 1440 else 1441 *(char **)how = no; 1442 return 0; 1443 } else { 1444 *(int *)how = el->el_terminal.t_val[tv - tval]; 1445 return 0; 1446 } 1447 } 1448 1449 /* terminal_echotc(): 1450 * Print the termcap string out with variable substitution 1451 */ 1452 protected int 1453 /*ARGSUSED*/ 1454 terminal_echotc(EditLine *el, int argc __attribute__((__unused__)), 1455 const Char **argv) 1456 { 1457 char *cap, *scap; 1458 Char *ep; 1459 int arg_need, arg_cols, arg_rows; 1460 int verbose = 0, silent = 0; 1461 char *area; 1462 static const char fmts[] = "%s\n", fmtd[] = "%d\n"; 1463 const struct termcapstr *t; 1464 char buf[TC_BUFSIZE]; 1465 long i; 1466 1467 area = buf; 1468 1469 if (argv == NULL || argv[1] == NULL) 1470 return -1; 1471 argv++; 1472 1473 if (argv[0][0] == '-') { 1474 switch (argv[0][1]) { 1475 case 'v': 1476 verbose = 1; 1477 break; 1478 case 's': 1479 silent = 1; 1480 break; 1481 default: 1482 /* stderror(ERR_NAME | ERR_TCUSAGE); */ 1483 break; 1484 } 1485 argv++; 1486 } 1487 if (!*argv || *argv[0] == '\0') 1488 return 0; 1489 if (Strcmp(*argv, STR("tabs")) == 0) { 1490 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no"); 1491 return 0; 1492 } else if (Strcmp(*argv, STR("meta")) == 0) { 1493 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no"); 1494 return 0; 1495 } else if (Strcmp(*argv, STR("xn")) == 0) { 1496 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ? 1497 "yes" : "no"); 1498 return 0; 1499 } else if (Strcmp(*argv, STR("am")) == 0) { 1500 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ? 1501 "yes" : "no"); 1502 return 0; 1503 } else if (Strcmp(*argv, STR("baud")) == 0) { 1504 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed); 1505 return 0; 1506 } else if (Strcmp(*argv, STR("rows")) == 0 || 1507 Strcmp(*argv, STR("lines")) == 0) { 1508 (void) fprintf(el->el_outfile, fmtd, Val(T_li)); 1509 return 0; 1510 } else if (Strcmp(*argv, STR("cols")) == 0) { 1511 (void) fprintf(el->el_outfile, fmtd, Val(T_co)); 1512 return 0; 1513 } 1514 /* 1515 * Try to use our local definition first 1516 */ 1517 scap = NULL; 1518 for (t = tstr; t->name != NULL; t++) 1519 if (strcmp(t->name, 1520 ct_encode_string(*argv, &el->el_scratch)) == 0) { 1521 scap = el->el_terminal.t_str[t - tstr]; 1522 break; 1523 } 1524 if (t->name == NULL) { 1525 /* XXX: some systems' tgetstr needs non const */ 1526 scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area); 1527 } 1528 if (!scap || scap[0] == '\0') { 1529 if (!silent) 1530 (void) fprintf(el->el_errfile, 1531 "echotc: Termcap parameter `" FSTR "' not found.\n", 1532 *argv); 1533 return -1; 1534 } 1535 /* 1536 * Count home many values we need for this capability. 1537 */ 1538 for (cap = scap, arg_need = 0; *cap; cap++) 1539 if (*cap == '%') 1540 switch (*++cap) { 1541 case 'd': 1542 case '2': 1543 case '3': 1544 case '.': 1545 case '+': 1546 arg_need++; 1547 break; 1548 case '%': 1549 case '>': 1550 case 'i': 1551 case 'r': 1552 case 'n': 1553 case 'B': 1554 case 'D': 1555 break; 1556 default: 1557 /* 1558 * hpux has lot's of them... 1559 */ 1560 if (verbose) 1561 (void) fprintf(el->el_errfile, 1562 "echotc: Warning: unknown termcap %% `%c'.\n", 1563 *cap); 1564 /* This is bad, but I won't complain */ 1565 break; 1566 } 1567 1568 switch (arg_need) { 1569 case 0: 1570 argv++; 1571 if (*argv && *argv[0]) { 1572 if (!silent) 1573 (void) fprintf(el->el_errfile, 1574 "echotc: Warning: Extra argument `" FSTR "'.\n", 1575 *argv); 1576 return -1; 1577 } 1578 terminal_tputs(el, scap, 1); 1579 break; 1580 case 1: 1581 argv++; 1582 if (!*argv || *argv[0] == '\0') { 1583 if (!silent) 1584 (void) fprintf(el->el_errfile, 1585 "echotc: Warning: Missing argument.\n"); 1586 return -1; 1587 } 1588 arg_cols = 0; 1589 i = Strtol(*argv, &ep, 10); 1590 if (*ep != '\0' || i < 0) { 1591 if (!silent) 1592 (void) fprintf(el->el_errfile, 1593 "echotc: Bad value `" FSTR "' for rows.\n", 1594 *argv); 1595 return -1; 1596 } 1597 arg_rows = (int) i; 1598 argv++; 1599 if (*argv && *argv[0]) { 1600 if (!silent) 1601 (void) fprintf(el->el_errfile, 1602 "echotc: Warning: Extra argument `" FSTR 1603 "'.\n", *argv); 1604 return -1; 1605 } 1606 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1); 1607 break; 1608 default: 1609 /* This is wrong, but I will ignore it... */ 1610 if (verbose) 1611 (void) fprintf(el->el_errfile, 1612 "echotc: Warning: Too many required arguments (%d).\n", 1613 arg_need); 1614 /* FALLTHROUGH */ 1615 case 2: 1616 argv++; 1617 if (!*argv || *argv[0] == '\0') { 1618 if (!silent) 1619 (void) fprintf(el->el_errfile, 1620 "echotc: Warning: Missing argument.\n"); 1621 return -1; 1622 } 1623 i = Strtol(*argv, &ep, 10); 1624 if (*ep != '\0' || i < 0) { 1625 if (!silent) 1626 (void) fprintf(el->el_errfile, 1627 "echotc: Bad value `" FSTR "' for cols.\n", 1628 *argv); 1629 return -1; 1630 } 1631 arg_cols = (int) i; 1632 argv++; 1633 if (!*argv || *argv[0] == '\0') { 1634 if (!silent) 1635 (void) fprintf(el->el_errfile, 1636 "echotc: Warning: Missing argument.\n"); 1637 return -1; 1638 } 1639 i = Strtol(*argv, &ep, 10); 1640 if (*ep != '\0' || i < 0) { 1641 if (!silent) 1642 (void) fprintf(el->el_errfile, 1643 "echotc: Bad value `" FSTR "' for rows.\n", 1644 *argv); 1645 return -1; 1646 } 1647 arg_rows = (int) i; 1648 if (*ep != '\0') { 1649 if (!silent) 1650 (void) fprintf(el->el_errfile, 1651 "echotc: Bad value `" FSTR "'.\n", *argv); 1652 return -1; 1653 } 1654 argv++; 1655 if (*argv && *argv[0]) { 1656 if (!silent) 1657 (void) fprintf(el->el_errfile, 1658 "echotc: Warning: Extra argument `" FSTR 1659 "'.\n", *argv); 1660 return -1; 1661 } 1662 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows); 1663 break; 1664 } 1665 return 0; 1666 } 1667