1 /* $NetBSD: terminal.c,v 1.44 2021/09/09 20:24:07 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 1.44 2021/09/09 20:24:07 christos Exp $"); 41 #endif 42 #endif /* not lint && not SCCSID */ 43 44 /* 45 * terminal.c: Editor/termcap-curses interface 46 * We have to declare a static variable here, since the 47 * termcap putchar routine does not take an argument! 48 */ 49 #include <sys/types.h> 50 #include <sys/ioctl.h> 51 #include <limits.h> 52 #include <signal.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <unistd.h> 57 #ifdef HAVE_TERMCAP_H 58 #include <termcap.h> 59 #endif 60 #ifdef HAVE_CURSES_H 61 #include <curses.h> 62 #elif HAVE_NCURSES_H 63 #include <ncurses.h> 64 #endif 65 66 /* Solaris's term.h does horrid things. */ 67 #if defined(HAVE_TERM_H) && !defined(__sun) && !defined(HAVE_TERMCAP_H) 68 #include <term.h> 69 #endif 70 71 #ifdef _REENTRANT 72 #include <pthread.h> 73 #endif 74 75 #include "el.h" 76 #include "fcns.h" 77 78 /* 79 * IMPORTANT NOTE: these routines are allowed to look at the current screen 80 * and the current position assuming that it is correct. If this is not 81 * true, then the update will be WRONG! This is (should be) a valid 82 * assumption... 83 */ 84 85 #define TC_BUFSIZE ((size_t)2048) 86 87 #define GoodStr(a) (el->el_terminal.t_str[a] != NULL && \ 88 el->el_terminal.t_str[a][0] != '\0') 89 #define Str(a) el->el_terminal.t_str[a] 90 #define Val(a) el->el_terminal.t_val[a] 91 92 static const struct termcapstr { 93 const char *name; 94 const char *long_name; 95 } tstr[] = { 96 #define T_al 0 97 { "al", "add new blank line" }, 98 #define T_bl 1 99 { "bl", "audible bell" }, 100 #define T_cd 2 101 { "cd", "clear to bottom" }, 102 #define T_ce 3 103 { "ce", "clear to end of line" }, 104 #define T_ch 4 105 { "ch", "cursor to horiz pos" }, 106 #define T_cl 5 107 { "cl", "clear screen" }, 108 #define T_dc 6 109 { "dc", "delete a character" }, 110 #define T_dl 7 111 { "dl", "delete a line" }, 112 #define T_dm 8 113 { "dm", "start delete mode" }, 114 #define T_ed 9 115 { "ed", "end delete mode" }, 116 #define T_ei 10 117 { "ei", "end insert mode" }, 118 #define T_fs 11 119 { "fs", "cursor from status line" }, 120 #define T_ho 12 121 { "ho", "home cursor" }, 122 #define T_ic 13 123 { "ic", "insert character" }, 124 #define T_im 14 125 { "im", "start insert mode" }, 126 #define T_ip 15 127 { "ip", "insert padding" }, 128 #define T_kd 16 129 { "kd", "sends cursor down" }, 130 #define T_kl 17 131 { "kl", "sends cursor left" }, 132 #define T_kr 18 133 { "kr", "sends cursor right" }, 134 #define T_ku 19 135 { "ku", "sends cursor up" }, 136 #define T_md 20 137 { "md", "begin bold" }, 138 #define T_me 21 139 { "me", "end attributes" }, 140 #define T_nd 22 141 { "nd", "non destructive space" }, 142 #define T_se 23 143 { "se", "end standout" }, 144 #define T_so 24 145 { "so", "begin standout" }, 146 #define T_ts 25 147 { "ts", "cursor to status line" }, 148 #define T_up 26 149 { "up", "cursor up one" }, 150 #define T_us 27 151 { "us", "begin underline" }, 152 #define T_ue 28 153 { "ue", "end underline" }, 154 #define T_vb 29 155 { "vb", "visible bell" }, 156 #define T_DC 30 157 { "DC", "delete multiple chars" }, 158 #define T_DO 31 159 { "DO", "cursor down multiple" }, 160 #define T_IC 32 161 { "IC", "insert multiple chars" }, 162 #define T_LE 33 163 { "LE", "cursor left multiple" }, 164 #define T_RI 34 165 { "RI", "cursor right multiple" }, 166 #define T_UP 35 167 { "UP", "cursor up multiple" }, 168 #define T_kh 36 169 { "kh", "send cursor home" }, 170 #define T_at7 37 171 { "@7", "send cursor end" }, 172 #define T_kD 38 173 { "kD", "send cursor delete" }, 174 #define T_str 39 175 { NULL, NULL } 176 }; 177 178 static const struct termcapval { 179 const char *name; 180 const char *long_name; 181 } tval[] = { 182 #define T_am 0 183 { "am", "has automatic margins" }, 184 #define T_pt 1 185 { "pt", "has physical tabs" }, 186 #define T_li 2 187 { "li", "Number of lines" }, 188 #define T_co 3 189 { "co", "Number of columns" }, 190 #define T_km 4 191 { "km", "Has meta key" }, 192 #define T_xt 5 193 { "xt", "Tab chars destructive" }, 194 #define T_xn 6 195 { "xn", "newline ignored at right margin" }, 196 #define T_MT 7 197 { "MT", "Has meta key" }, /* XXX? */ 198 #define T_val 8 199 { NULL, NULL, } 200 }; 201 /* do two or more of the attributes use me */ 202 203 static void terminal_setflags(EditLine *); 204 static int terminal_rebuffer_display(EditLine *); 205 static void terminal_free_display(EditLine *); 206 static int terminal_alloc_display(EditLine *); 207 static void terminal_alloc(EditLine *, const struct termcapstr *, 208 const char *); 209 static void terminal_init_arrow(EditLine *); 210 static void terminal_reset_arrow(EditLine *); 211 static int terminal_putc(int); 212 static void terminal_tputs(EditLine *, const char *, int); 213 214 #ifdef _REENTRANT 215 static pthread_mutex_t terminal_mutex = PTHREAD_MUTEX_INITIALIZER; 216 #endif 217 static FILE *terminal_outfile = NULL; 218 219 220 /* terminal_setflags(): 221 * Set the terminal capability flags 222 */ 223 static void 224 terminal_setflags(EditLine *el) 225 { 226 EL_FLAGS = 0; 227 if (el->el_tty.t_tabs) 228 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0; 229 230 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0; 231 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0; 232 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0; 233 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ? 234 TERM_CAN_INSERT : 0; 235 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0; 236 EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0; 237 EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0; 238 239 if (GoodStr(T_me) && GoodStr(T_ue)) 240 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ? 241 TERM_CAN_ME : 0; 242 else 243 EL_FLAGS &= ~TERM_CAN_ME; 244 if (GoodStr(T_me) && GoodStr(T_se)) 245 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ? 246 TERM_CAN_ME : 0; 247 248 249 #ifdef DEBUG_SCREEN 250 if (!EL_CAN_UP) { 251 (void) fprintf(el->el_errfile, 252 "WARNING: Your terminal cannot move up.\n"); 253 (void) fprintf(el->el_errfile, 254 "Editing may be odd for long lines.\n"); 255 } 256 if (!EL_CAN_CEOL) 257 (void) fprintf(el->el_errfile, "no clear EOL capability.\n"); 258 if (!EL_CAN_DELETE) 259 (void) fprintf(el->el_errfile, "no delete char capability.\n"); 260 if (!EL_CAN_INSERT) 261 (void) fprintf(el->el_errfile, "no insert char capability.\n"); 262 #endif /* DEBUG_SCREEN */ 263 } 264 265 /* terminal_init(): 266 * Initialize the terminal stuff 267 */ 268 libedit_private int 269 terminal_init(EditLine *el) 270 { 271 272 el->el_terminal.t_buf = el_calloc(TC_BUFSIZE, 273 sizeof(*el->el_terminal.t_buf)); 274 if (el->el_terminal.t_buf == NULL) 275 goto fail1; 276 el->el_terminal.t_cap = el_calloc(TC_BUFSIZE, 277 sizeof(*el->el_terminal.t_cap)); 278 if (el->el_terminal.t_cap == NULL) 279 goto fail2; 280 el->el_terminal.t_fkey = el_calloc(A_K_NKEYS, 281 sizeof(*el->el_terminal.t_fkey)); 282 if (el->el_terminal.t_fkey == NULL) 283 goto fail3; 284 el->el_terminal.t_loc = 0; 285 el->el_terminal.t_str = el_calloc(T_str, 286 sizeof(*el->el_terminal.t_str)); 287 if (el->el_terminal.t_str == NULL) 288 goto fail4; 289 el->el_terminal.t_val = el_calloc(T_val, 290 sizeof(*el->el_terminal.t_val)); 291 if (el->el_terminal.t_val == NULL) 292 goto fail5; 293 (void) terminal_set(el, NULL); 294 terminal_init_arrow(el); 295 return 0; 296 fail5: 297 free(el->el_terminal.t_str); 298 el->el_terminal.t_str = NULL; 299 fail4: 300 free(el->el_terminal.t_fkey); 301 el->el_terminal.t_fkey = NULL; 302 fail3: 303 free(el->el_terminal.t_cap); 304 el->el_terminal.t_cap = NULL; 305 fail2: 306 free(el->el_terminal.t_buf); 307 el->el_terminal.t_buf = NULL; 308 fail1: 309 return -1; 310 } 311 312 /* terminal_end(): 313 * Clean up the terminal stuff 314 */ 315 libedit_private void 316 terminal_end(EditLine *el) 317 { 318 319 el_free(el->el_terminal.t_buf); 320 el->el_terminal.t_buf = NULL; 321 el_free(el->el_terminal.t_cap); 322 el->el_terminal.t_cap = NULL; 323 el->el_terminal.t_loc = 0; 324 el_free(el->el_terminal.t_str); 325 el->el_terminal.t_str = NULL; 326 el_free(el->el_terminal.t_val); 327 el->el_terminal.t_val = NULL; 328 el_free(el->el_terminal.t_fkey); 329 el->el_terminal.t_fkey = NULL; 330 terminal_free_display(el); 331 } 332 333 334 /* terminal_alloc(): 335 * Maintain a string pool for termcap strings 336 */ 337 static void 338 terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap) 339 { 340 char termbuf[TC_BUFSIZE]; 341 size_t tlen, clen; 342 char **tlist = el->el_terminal.t_str; 343 char **tmp, **str = &tlist[t - tstr]; 344 345 (void) memset(termbuf, 0, sizeof(termbuf)); 346 if (cap == NULL || *cap == '\0') { 347 *str = NULL; 348 return; 349 } else 350 clen = strlen(cap); 351 352 tlen = *str == NULL ? 0 : strlen(*str); 353 354 /* 355 * New string is shorter; no need to allocate space 356 */ 357 if (clen <= tlen) { 358 if (*str) 359 (void) strcpy(*str, cap); /* XXX strcpy is safe */ 360 return; 361 } 362 /* 363 * New string is longer; see if we have enough space to append 364 */ 365 if (el->el_terminal.t_loc + 3 < TC_BUFSIZE) { 366 /* XXX strcpy is safe */ 367 (void) strcpy(*str = &el->el_terminal.t_buf[ 368 el->el_terminal.t_loc], cap); 369 el->el_terminal.t_loc += clen + 1; /* one for \0 */ 370 return; 371 } 372 /* 373 * Compact our buffer; no need to check compaction, cause we know it 374 * fits... 375 */ 376 tlen = 0; 377 for (tmp = tlist; tmp < &tlist[T_str]; tmp++) 378 if (*tmp != NULL && **tmp != '\0' && *tmp != *str) { 379 char *ptr; 380 381 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++) 382 continue; 383 termbuf[tlen++] = '\0'; 384 } 385 memcpy(el->el_terminal.t_buf, termbuf, TC_BUFSIZE); 386 el->el_terminal.t_loc = tlen; 387 if (el->el_terminal.t_loc + 3 >= TC_BUFSIZE) { 388 (void) fprintf(el->el_errfile, 389 "Out of termcap string space.\n"); 390 return; 391 } 392 /* XXX strcpy is safe */ 393 (void) strcpy(*str = &el->el_terminal.t_buf[el->el_terminal.t_loc], 394 cap); 395 el->el_terminal.t_loc += (size_t)clen + 1; /* one for \0 */ 396 return; 397 } 398 399 400 /* terminal_rebuffer_display(): 401 * Rebuffer the display after the screen changed size 402 */ 403 static int 404 terminal_rebuffer_display(EditLine *el) 405 { 406 coord_t *c = &el->el_terminal.t_size; 407 408 terminal_free_display(el); 409 410 c->h = Val(T_co); 411 c->v = Val(T_li); 412 413 if (terminal_alloc_display(el) == -1) 414 return -1; 415 return 0; 416 } 417 418 static wint_t ** 419 terminal_alloc_buffer(EditLine *el) 420 { 421 wint_t **b; 422 coord_t *c = &el->el_terminal.t_size; 423 int i; 424 425 b = el_calloc((size_t)(c->v + 1), sizeof(*b)); 426 if (b == NULL) 427 return NULL; 428 for (i = 0; i < c->v; i++) { 429 b[i] = el_calloc((size_t)(c->h + 1), sizeof(**b)); 430 if (b[i] == NULL) { 431 while (--i >= 0) 432 el_free(b[i]); 433 el_free(b); 434 return NULL; 435 } 436 } 437 b[c->v] = NULL; 438 return b; 439 } 440 441 static void 442 terminal_free_buffer(wint_t ***bp) 443 { 444 wint_t **b; 445 wint_t **bufp; 446 447 if (*bp == NULL) 448 return; 449 450 b = *bp; 451 *bp = NULL; 452 453 for (bufp = b; *bufp != NULL; bufp++) 454 el_free(*bufp); 455 el_free(b); 456 } 457 458 /* terminal_alloc_display(): 459 * Allocate a new display. 460 */ 461 static int 462 terminal_alloc_display(EditLine *el) 463 { 464 el->el_display = terminal_alloc_buffer(el); 465 if (el->el_display == NULL) 466 goto done; 467 el->el_vdisplay = terminal_alloc_buffer(el); 468 if (el->el_vdisplay == NULL) 469 goto done; 470 return 0; 471 done: 472 terminal_free_display(el); 473 return -1; 474 } 475 476 477 /* terminal_free_display(): 478 * Free the display buffers 479 */ 480 static void 481 terminal_free_display(EditLine *el) 482 { 483 terminal_free_buffer(&el->el_display); 484 terminal_free_buffer(&el->el_vdisplay); 485 } 486 487 488 /* terminal_move_to_line(): 489 * move to line <where> (first line == 0) 490 * as efficiently as possible 491 */ 492 libedit_private void 493 terminal_move_to_line(EditLine *el, int where) 494 { 495 int del; 496 497 if (where == el->el_cursor.v) 498 return; 499 500 if (where >= el->el_terminal.t_size.v) { 501 #ifdef DEBUG_SCREEN 502 (void) fprintf(el->el_errfile, 503 "%s: where is ridiculous: %d\r\n", __func__, where); 504 #endif /* DEBUG_SCREEN */ 505 return; 506 } 507 if ((del = where - el->el_cursor.v) > 0) { 508 /* 509 * We don't use DO here because some terminals are buggy 510 * if the destination is beyond bottom of the screen. 511 */ 512 for (; del > 0; del--) 513 terminal__putc(el, '\n'); 514 /* because the \n will become \r\n */ 515 el->el_cursor.h = 0; 516 } else { /* del < 0 */ 517 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up))) 518 terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del); 519 else { 520 if (GoodStr(T_up)) 521 for (; del < 0; del++) 522 terminal_tputs(el, Str(T_up), 1); 523 } 524 } 525 el->el_cursor.v = where;/* now where is here */ 526 } 527 528 529 /* terminal_move_to_char(): 530 * Move to the character position specified 531 */ 532 libedit_private void 533 terminal_move_to_char(EditLine *el, int where) 534 { 535 int del, i; 536 537 mc_again: 538 if (where == el->el_cursor.h) 539 return; 540 541 if (where > el->el_terminal.t_size.h) { 542 #ifdef DEBUG_SCREEN 543 (void) fprintf(el->el_errfile, 544 "%s: where is ridiculous: %d\r\n", __func__, where); 545 #endif /* DEBUG_SCREEN */ 546 return; 547 } 548 if (!where) { /* if where is first column */ 549 terminal__putc(el, '\r'); /* do a CR */ 550 el->el_cursor.h = 0; 551 return; 552 } 553 del = where - el->el_cursor.h; 554 555 if ((del < -4 || del > 4) && GoodStr(T_ch)) 556 /* go there directly */ 557 terminal_tputs(el, tgoto(Str(T_ch), where, where), where); 558 else { 559 if (del > 0) { /* moving forward */ 560 if ((del > 4) && GoodStr(T_RI)) 561 terminal_tputs(el, tgoto(Str(T_RI), del, del), 562 del); 563 else { 564 /* if I can do tabs, use them */ 565 if (EL_CAN_TAB) { 566 if ((el->el_cursor.h & 0370) != 567 (where & ~0x7) 568 && (el->el_display[ 569 el->el_cursor.v][where & 0370] != 570 MB_FILL_CHAR) 571 ) { 572 /* if not within tab stop */ 573 for (i = 574 (el->el_cursor.h & 0370); 575 i < (where & ~0x7); 576 i += 8) 577 terminal__putc(el, 578 '\t'); 579 /* then tab over */ 580 el->el_cursor.h = where & ~0x7; 581 } 582 } 583 /* 584 * it's usually cheaper to just write the 585 * chars, so we do. 586 */ 587 /* 588 * NOTE THAT terminal_overwrite() WILL CHANGE 589 * el->el_cursor.h!!! 590 */ 591 terminal_overwrite(el, 592 (wchar_t *)&el->el_display[ 593 el->el_cursor.v][el->el_cursor.h], 594 (size_t)(where - el->el_cursor.h)); 595 596 } 597 } else { /* del < 0 := moving backward */ 598 if ((-del > 4) && GoodStr(T_LE)) 599 terminal_tputs(el, tgoto(Str(T_LE), -del, -del), 600 -del); 601 else { /* can't go directly there */ 602 /* 603 * if the "cost" is greater than the "cost" 604 * from col 0 605 */ 606 if (EL_CAN_TAB ? 607 ((unsigned int)-del > 608 (((unsigned int) where >> 3) + 609 (where & 07))) 610 : (-del > where)) { 611 terminal__putc(el, '\r');/* do a CR */ 612 el->el_cursor.h = 0; 613 goto mc_again; /* and try again */ 614 } 615 for (i = 0; i < -del; i++) 616 terminal__putc(el, '\b'); 617 } 618 } 619 } 620 el->el_cursor.h = where; /* now where is here */ 621 } 622 623 624 /* terminal_overwrite(): 625 * Overstrike num characters 626 * Assumes MB_FILL_CHARs are present to keep the column count correct 627 */ 628 libedit_private void 629 terminal_overwrite(EditLine *el, const wchar_t *cp, size_t n) 630 { 631 if (n == 0) 632 return; 633 634 if (n > (size_t)el->el_terminal.t_size.h) { 635 #ifdef DEBUG_SCREEN 636 (void) fprintf(el->el_errfile, 637 "%s: n is ridiculous: %zu\r\n", __func__, n); 638 #endif /* DEBUG_SCREEN */ 639 return; 640 } 641 642 do { 643 /* terminal__putc() ignores any MB_FILL_CHARs */ 644 terminal__putc(el, *cp++); 645 el->el_cursor.h++; 646 } while (--n); 647 648 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */ 649 if (EL_HAS_AUTO_MARGINS) { /* yes */ 650 el->el_cursor.h = 0; 651 if (el->el_cursor.v + 1 < el->el_terminal.t_size.v) 652 el->el_cursor.v++; 653 if (EL_HAS_MAGIC_MARGINS) { 654 /* force the wrap to avoid the "magic" 655 * situation */ 656 wchar_t c; 657 if ((c = el->el_display[el->el_cursor.v] 658 [el->el_cursor.h]) != '\0') { 659 terminal_overwrite(el, &c, (size_t)1); 660 while (el->el_display[el->el_cursor.v] 661 [el->el_cursor.h] == MB_FILL_CHAR) 662 el->el_cursor.h++; 663 } else { 664 terminal__putc(el, ' '); 665 el->el_cursor.h = 1; 666 } 667 } 668 } else /* no wrap, but cursor stays on screen */ 669 el->el_cursor.h = el->el_terminal.t_size.h - 1; 670 } 671 } 672 673 674 /* terminal_deletechars(): 675 * Delete num characters 676 */ 677 libedit_private void 678 terminal_deletechars(EditLine *el, int num) 679 { 680 if (num <= 0) 681 return; 682 683 if (!EL_CAN_DELETE) { 684 #ifdef DEBUG_EDIT 685 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n"); 686 #endif /* DEBUG_EDIT */ 687 return; 688 } 689 if (num > el->el_terminal.t_size.h) { 690 #ifdef DEBUG_SCREEN 691 (void) fprintf(el->el_errfile, 692 "%s: num is ridiculous: %d\r\n", __func__, num); 693 #endif /* DEBUG_SCREEN */ 694 return; 695 } 696 if (GoodStr(T_DC)) /* if I have multiple delete */ 697 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more 698 * expen. */ 699 terminal_tputs(el, tgoto(Str(T_DC), num, num), num); 700 return; 701 } 702 if (GoodStr(T_dm)) /* if I have delete mode */ 703 terminal_tputs(el, Str(T_dm), 1); 704 705 if (GoodStr(T_dc)) /* else do one at a time */ 706 while (num--) 707 terminal_tputs(el, Str(T_dc), 1); 708 709 if (GoodStr(T_ed)) /* if I have delete mode */ 710 terminal_tputs(el, Str(T_ed), 1); 711 } 712 713 714 /* terminal_insertwrite(): 715 * Puts terminal in insert character mode or inserts num 716 * characters in the line 717 * Assumes MB_FILL_CHARs are present to keep column count correct 718 */ 719 libedit_private void 720 terminal_insertwrite(EditLine *el, wchar_t *cp, int num) 721 { 722 if (num <= 0) 723 return; 724 if (!EL_CAN_INSERT) { 725 #ifdef DEBUG_EDIT 726 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n"); 727 #endif /* DEBUG_EDIT */ 728 return; 729 } 730 if (num > el->el_terminal.t_size.h) { 731 #ifdef DEBUG_SCREEN 732 (void) fprintf(el->el_errfile, 733 "%s: num is ridiculous: %d\r\n", __func__, num); 734 #endif /* DEBUG_SCREEN */ 735 return; 736 } 737 if (GoodStr(T_IC)) /* if I have multiple insert */ 738 if ((num > 1) || !GoodStr(T_ic)) { 739 /* if ic would be more expensive */ 740 terminal_tputs(el, tgoto(Str(T_IC), num, num), num); 741 terminal_overwrite(el, cp, (size_t)num); 742 /* this updates el_cursor.h */ 743 return; 744 } 745 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */ 746 terminal_tputs(el, Str(T_im), 1); 747 748 el->el_cursor.h += num; 749 do 750 terminal__putc(el, *cp++); 751 while (--num); 752 753 if (GoodStr(T_ip)) /* have to make num chars insert */ 754 terminal_tputs(el, Str(T_ip), 1); 755 756 terminal_tputs(el, Str(T_ei), 1); 757 return; 758 } 759 do { 760 if (GoodStr(T_ic)) /* have to make num chars insert */ 761 terminal_tputs(el, Str(T_ic), 1); 762 763 terminal__putc(el, *cp++); 764 765 el->el_cursor.h++; 766 767 if (GoodStr(T_ip)) /* have to make num chars insert */ 768 terminal_tputs(el, Str(T_ip), 1); 769 /* pad the inserted char */ 770 771 } while (--num); 772 } 773 774 775 /* terminal_clear_EOL(): 776 * clear to end of line. There are num characters to clear 777 */ 778 libedit_private void 779 terminal_clear_EOL(EditLine *el, int num) 780 { 781 int i; 782 783 if (EL_CAN_CEOL && GoodStr(T_ce)) 784 terminal_tputs(el, Str(T_ce), 1); 785 else { 786 for (i = 0; i < num; i++) 787 terminal__putc(el, ' '); 788 el->el_cursor.h += num; /* have written num spaces */ 789 } 790 } 791 792 793 /* terminal_clear_screen(): 794 * Clear the screen 795 */ 796 libedit_private void 797 terminal_clear_screen(EditLine *el) 798 { /* clear the whole screen and home */ 799 800 if (GoodStr(T_cl)) 801 /* send the clear screen code */ 802 terminal_tputs(el, Str(T_cl), Val(T_li)); 803 else if (GoodStr(T_ho) && GoodStr(T_cd)) { 804 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */ 805 /* clear to bottom of screen */ 806 terminal_tputs(el, Str(T_cd), Val(T_li)); 807 } else { 808 terminal__putc(el, '\r'); 809 terminal__putc(el, '\n'); 810 } 811 } 812 813 814 /* terminal_beep(): 815 * Beep the way the terminal wants us 816 */ 817 libedit_private void 818 terminal_beep(EditLine *el) 819 { 820 if (GoodStr(T_bl)) 821 /* what termcap says we should use */ 822 terminal_tputs(el, Str(T_bl), 1); 823 else 824 terminal__putc(el, '\007'); /* an ASCII bell; ^G */ 825 } 826 827 828 libedit_private void 829 terminal_get(EditLine *el, const char **term) 830 { 831 *term = el->el_terminal.t_name; 832 } 833 834 835 /* terminal_set(): 836 * Read in the terminal capabilities from the requested terminal 837 */ 838 libedit_private int 839 terminal_set(EditLine *el, const char *term) 840 { 841 int i; 842 char buf[TC_BUFSIZE]; 843 char *area; 844 const struct termcapstr *t; 845 sigset_t oset, nset; 846 int lins, cols; 847 848 (void) sigemptyset(&nset); 849 (void) sigaddset(&nset, SIGWINCH); 850 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 851 852 area = buf; 853 854 855 if (term == NULL) 856 term = getenv("TERM"); 857 858 if (!term || !term[0]) 859 term = "dumb"; 860 861 if (strcmp(term, "emacs") == 0) 862 el->el_flags |= EDIT_DISABLED; 863 864 (void) memset(el->el_terminal.t_cap, 0, TC_BUFSIZE); 865 866 i = tgetent(el->el_terminal.t_cap, term); 867 868 if (i <= 0) { 869 if (i == -1) 870 (void) fprintf(el->el_errfile, 871 "Cannot read termcap database;\n"); 872 else if (i == 0) 873 (void) fprintf(el->el_errfile, 874 "No entry for terminal type \"%s\";\n", term); 875 (void) fprintf(el->el_errfile, 876 "using dumb terminal settings.\n"); 877 Val(T_co) = 80; /* do a dumb terminal */ 878 Val(T_pt) = Val(T_km) = Val(T_li) = 0; 879 Val(T_xt) = Val(T_MT); 880 for (t = tstr; t->name != NULL; t++) 881 terminal_alloc(el, t, NULL); 882 } else { 883 /* auto/magic margins */ 884 Val(T_am) = tgetflag("am"); 885 Val(T_xn) = tgetflag("xn"); 886 /* Can we tab */ 887 Val(T_pt) = tgetflag("pt"); 888 Val(T_xt) = tgetflag("xt"); 889 /* do we have a meta? */ 890 Val(T_km) = tgetflag("km"); 891 Val(T_MT) = tgetflag("MT"); 892 /* Get the size */ 893 Val(T_co) = tgetnum("co"); 894 Val(T_li) = tgetnum("li"); 895 for (t = tstr; t->name != NULL; t++) { 896 /* XXX: some systems' tgetstr needs non const */ 897 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name), 898 &area)); 899 } 900 } 901 902 if (Val(T_co) < 2) 903 Val(T_co) = 80; /* just in case */ 904 if (Val(T_li) < 1) 905 Val(T_li) = 24; 906 907 el->el_terminal.t_size.v = Val(T_co); 908 el->el_terminal.t_size.h = Val(T_li); 909 910 terminal_setflags(el); 911 912 /* get the correct window size */ 913 (void) terminal_get_size(el, &lins, &cols); 914 if (terminal_change_size(el, lins, cols) == -1) 915 return -1; 916 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 917 terminal_bind_arrow(el); 918 el->el_terminal.t_name = term; 919 return i <= 0 ? -1 : 0; 920 } 921 922 923 /* terminal_get_size(): 924 * Return the new window size in lines and cols, and 925 * true if the size was changed. 926 */ 927 libedit_private int 928 terminal_get_size(EditLine *el, int *lins, int *cols) 929 { 930 931 *cols = Val(T_co); 932 *lins = Val(T_li); 933 934 #ifdef TIOCGWINSZ 935 { 936 struct winsize ws; 937 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) { 938 if (ws.ws_col) 939 *cols = ws.ws_col; 940 if (ws.ws_row) 941 *lins = ws.ws_row; 942 } 943 } 944 #endif 945 #ifdef TIOCGSIZE 946 { 947 struct ttysize ts; 948 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) { 949 if (ts.ts_cols) 950 *cols = ts.ts_cols; 951 if (ts.ts_lines) 952 *lins = ts.ts_lines; 953 } 954 } 955 #endif 956 return Val(T_co) != *cols || Val(T_li) != *lins; 957 } 958 959 960 /* terminal_change_size(): 961 * Change the size of the terminal 962 */ 963 libedit_private int 964 terminal_change_size(EditLine *el, int lins, int cols) 965 { 966 coord_t cur = el->el_cursor; 967 /* 968 * Just in case 969 */ 970 Val(T_co) = (cols < 2) ? 80 : cols; 971 Val(T_li) = (lins < 1) ? 24 : lins; 972 973 /* re-make display buffers */ 974 if (terminal_rebuffer_display(el) == -1) 975 return -1; 976 re_clear_display(el); 977 el->el_cursor = cur; 978 return 0; 979 } 980 981 982 /* terminal_init_arrow(): 983 * Initialize the arrow key bindings from termcap 984 */ 985 static void 986 terminal_init_arrow(EditLine *el) 987 { 988 funckey_t *arrow = el->el_terminal.t_fkey; 989 990 arrow[A_K_DN].name = L"down"; 991 arrow[A_K_DN].key = T_kd; 992 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY; 993 arrow[A_K_DN].type = XK_CMD; 994 995 arrow[A_K_UP].name = L"up"; 996 arrow[A_K_UP].key = T_ku; 997 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY; 998 arrow[A_K_UP].type = XK_CMD; 999 1000 arrow[A_K_LT].name = L"left"; 1001 arrow[A_K_LT].key = T_kl; 1002 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR; 1003 arrow[A_K_LT].type = XK_CMD; 1004 1005 arrow[A_K_RT].name = L"right"; 1006 arrow[A_K_RT].key = T_kr; 1007 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR; 1008 arrow[A_K_RT].type = XK_CMD; 1009 1010 arrow[A_K_HO].name = L"home"; 1011 arrow[A_K_HO].key = T_kh; 1012 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG; 1013 arrow[A_K_HO].type = XK_CMD; 1014 1015 arrow[A_K_EN].name = L"end"; 1016 arrow[A_K_EN].key = T_at7; 1017 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END; 1018 arrow[A_K_EN].type = XK_CMD; 1019 1020 arrow[A_K_DE].name = L"delete"; 1021 arrow[A_K_DE].key = T_kD; 1022 arrow[A_K_DE].fun.cmd = ED_DELETE_NEXT_CHAR; 1023 arrow[A_K_DE].type = XK_CMD; 1024 } 1025 1026 1027 /* terminal_reset_arrow(): 1028 * Reset arrow key bindings 1029 */ 1030 static void 1031 terminal_reset_arrow(EditLine *el) 1032 { 1033 funckey_t *arrow = el->el_terminal.t_fkey; 1034 static const wchar_t strA[] = L"\033[A"; 1035 static const wchar_t strB[] = L"\033[B"; 1036 static const wchar_t strC[] = L"\033[C"; 1037 static const wchar_t strD[] = L"\033[D"; 1038 static const wchar_t strH[] = L"\033[H"; 1039 static const wchar_t strF[] = L"\033[F"; 1040 static const wchar_t stOA[] = L"\033OA"; 1041 static const wchar_t stOB[] = L"\033OB"; 1042 static const wchar_t stOC[] = L"\033OC"; 1043 static const wchar_t stOD[] = L"\033OD"; 1044 static const wchar_t stOH[] = L"\033OH"; 1045 static const wchar_t stOF[] = L"\033OF"; 1046 1047 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1048 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1049 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1050 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1051 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1052 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1053 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1054 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1055 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1056 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1057 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1058 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1059 1060 if (el->el_map.type != MAP_VI) 1061 return; 1062 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1063 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1064 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1065 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1066 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1067 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1068 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1069 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1070 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1071 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1072 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1073 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1074 } 1075 1076 1077 /* terminal_set_arrow(): 1078 * Set an arrow key binding 1079 */ 1080 libedit_private int 1081 terminal_set_arrow(EditLine *el, const wchar_t *name, keymacro_value_t *fun, 1082 int type) 1083 { 1084 funckey_t *arrow = el->el_terminal.t_fkey; 1085 int i; 1086 1087 for (i = 0; i < A_K_NKEYS; i++) 1088 if (wcscmp(name, arrow[i].name) == 0) { 1089 arrow[i].fun = *fun; 1090 arrow[i].type = type; 1091 return 0; 1092 } 1093 return -1; 1094 } 1095 1096 1097 /* terminal_clear_arrow(): 1098 * Clear an arrow key binding 1099 */ 1100 libedit_private int 1101 terminal_clear_arrow(EditLine *el, const wchar_t *name) 1102 { 1103 funckey_t *arrow = el->el_terminal.t_fkey; 1104 int i; 1105 1106 for (i = 0; i < A_K_NKEYS; i++) 1107 if (wcscmp(name, arrow[i].name) == 0) { 1108 arrow[i].type = XK_NOD; 1109 return 0; 1110 } 1111 return -1; 1112 } 1113 1114 1115 /* terminal_print_arrow(): 1116 * Print the arrow key bindings 1117 */ 1118 libedit_private void 1119 terminal_print_arrow(EditLine *el, const wchar_t *name) 1120 { 1121 int i; 1122 funckey_t *arrow = el->el_terminal.t_fkey; 1123 1124 for (i = 0; i < A_K_NKEYS; i++) 1125 if (*name == '\0' || wcscmp(name, arrow[i].name) == 0) 1126 if (arrow[i].type != XK_NOD) 1127 keymacro_kprint(el, arrow[i].name, 1128 &arrow[i].fun, arrow[i].type); 1129 } 1130 1131 1132 /* terminal_bind_arrow(): 1133 * Bind the arrow keys 1134 */ 1135 libedit_private void 1136 terminal_bind_arrow(EditLine *el) 1137 { 1138 el_action_t *map; 1139 const el_action_t *dmap; 1140 int i, j; 1141 char *p; 1142 funckey_t *arrow = el->el_terminal.t_fkey; 1143 1144 /* Check if the components needed are initialized */ 1145 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL) 1146 return; 1147 1148 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key; 1149 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs; 1150 1151 terminal_reset_arrow(el); 1152 1153 for (i = 0; i < A_K_NKEYS; i++) { 1154 wchar_t wt_str[VISUAL_WIDTH_MAX]; 1155 wchar_t *px; 1156 size_t n; 1157 1158 p = el->el_terminal.t_str[arrow[i].key]; 1159 if (!p || !*p) 1160 continue; 1161 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n) 1162 wt_str[n] = p[n]; 1163 while (n < VISUAL_WIDTH_MAX) 1164 wt_str[n++] = '\0'; 1165 px = wt_str; 1166 j = (unsigned char) *p; 1167 /* 1168 * Assign the arrow keys only if: 1169 * 1170 * 1. They are multi-character arrow keys and the user 1171 * has not re-assigned the leading character, or 1172 * has re-assigned the leading character to be 1173 * ED_SEQUENCE_LEAD_IN 1174 * 2. They are single arrow keys pointing to an 1175 * unassigned key. 1176 */ 1177 if (arrow[i].type == XK_NOD) 1178 keymacro_clear(el, map, px); 1179 else { 1180 if (p[1] && (dmap[j] == map[j] || 1181 map[j] == ED_SEQUENCE_LEAD_IN)) { 1182 keymacro_add(el, px, &arrow[i].fun, 1183 arrow[i].type); 1184 map[j] = ED_SEQUENCE_LEAD_IN; 1185 } else if (map[j] == ED_UNASSIGNED) { 1186 keymacro_clear(el, map, px); 1187 if (arrow[i].type == XK_CMD) 1188 map[j] = arrow[i].fun.cmd; 1189 else 1190 keymacro_add(el, px, &arrow[i].fun, 1191 arrow[i].type); 1192 } 1193 } 1194 } 1195 } 1196 1197 /* terminal_putc(): 1198 * Add a character 1199 */ 1200 static int 1201 terminal_putc(int c) 1202 { 1203 if (terminal_outfile == NULL) 1204 return -1; 1205 return fputc(c, terminal_outfile); 1206 } 1207 1208 static void 1209 terminal_tputs(EditLine *el, const char *cap, int affcnt) 1210 { 1211 #ifdef _REENTRANT 1212 pthread_mutex_lock(&terminal_mutex); 1213 #endif 1214 terminal_outfile = el->el_outfile; 1215 (void)tputs(cap, affcnt, terminal_putc); 1216 #ifdef _REENTRANT 1217 pthread_mutex_unlock(&terminal_mutex); 1218 #endif 1219 } 1220 1221 /* terminal__putc(): 1222 * Add a character 1223 */ 1224 libedit_private int 1225 terminal__putc(EditLine *el, wint_t c) 1226 { 1227 char buf[MB_LEN_MAX +1]; 1228 ssize_t i; 1229 if (c == MB_FILL_CHAR) 1230 return 0; 1231 if (c & EL_LITERAL) 1232 return fputs(literal_get(el, c), el->el_outfile); 1233 i = ct_encode_char(buf, (size_t)MB_LEN_MAX, c); 1234 if (i <= 0) 1235 return (int)i; 1236 buf[i] = '\0'; 1237 return fputs(buf, el->el_outfile); 1238 } 1239 1240 /* terminal__flush(): 1241 * Flush output 1242 */ 1243 libedit_private void 1244 terminal__flush(EditLine *el) 1245 { 1246 1247 (void) fflush(el->el_outfile); 1248 } 1249 1250 /* terminal_writec(): 1251 * Write the given character out, in a human readable form 1252 */ 1253 libedit_private void 1254 terminal_writec(EditLine *el, wint_t c) 1255 { 1256 wchar_t visbuf[VISUAL_WIDTH_MAX +1]; 1257 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c); 1258 if (vcnt < 0) 1259 vcnt = 0; 1260 visbuf[vcnt] = '\0'; 1261 terminal_overwrite(el, visbuf, (size_t)vcnt); 1262 terminal__flush(el); 1263 } 1264 1265 1266 /* terminal_telltc(): 1267 * Print the current termcap characteristics 1268 */ 1269 libedit_private int 1270 /*ARGSUSED*/ 1271 terminal_telltc(EditLine *el, int argc __attribute__((__unused__)), 1272 const wchar_t **argv __attribute__((__unused__))) 1273 { 1274 const struct termcapstr *t; 1275 char **ts; 1276 1277 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n"); 1278 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n"); 1279 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n", 1280 Val(T_co), Val(T_li)); 1281 (void) fprintf(el->el_outfile, 1282 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no"); 1283 (void) fprintf(el->el_outfile, 1284 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not "); 1285 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n", 1286 EL_HAS_AUTO_MARGINS ? "has" : "does not have"); 1287 if (EL_HAS_AUTO_MARGINS) 1288 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n", 1289 EL_HAS_MAGIC_MARGINS ? "has" : "does not have"); 1290 1291 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) { 1292 const char *ub; 1293 if (*ts && **ts) { 1294 ub = ct_encode_string(ct_visual_string( 1295 ct_decode_string(*ts, &el->el_scratch), 1296 &el->el_visual), &el->el_scratch); 1297 } else { 1298 ub = "(empty)"; 1299 } 1300 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n", 1301 t->long_name, t->name, ub); 1302 } 1303 (void) fputc('\n', el->el_outfile); 1304 return 0; 1305 } 1306 1307 1308 /* terminal_settc(): 1309 * Change the current terminal characteristics 1310 */ 1311 libedit_private int 1312 /*ARGSUSED*/ 1313 terminal_settc(EditLine *el, int argc __attribute__((__unused__)), 1314 const wchar_t **argv) 1315 { 1316 const struct termcapstr *ts; 1317 const struct termcapval *tv; 1318 char what[8], how[8]; 1319 long i; 1320 char *ep; 1321 1322 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1323 return -1; 1324 1325 strlcpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what)); 1326 strlcpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how)); 1327 1328 /* 1329 * Do the strings first 1330 */ 1331 for (ts = tstr; ts->name != NULL; ts++) 1332 if (strcmp(ts->name, what) == 0) 1333 break; 1334 1335 if (ts->name != NULL) { 1336 terminal_alloc(el, ts, how); 1337 terminal_setflags(el); 1338 return 0; 1339 } 1340 /* 1341 * Do the numeric ones second 1342 */ 1343 for (tv = tval; tv->name != NULL; tv++) 1344 if (strcmp(tv->name, what) == 0) 1345 break; 1346 1347 if (tv->name == NULL) { 1348 (void) fprintf(el->el_errfile, 1349 "%ls: Bad capability `%s'.\n", argv[0], what); 1350 return -1; 1351 } 1352 1353 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1354 tv == &tval[T_am] || tv == &tval[T_xn]) { 1355 /* 1356 * Booleans 1357 */ 1358 if (strcmp(how, "yes") == 0) 1359 el->el_terminal.t_val[tv - tval] = 1; 1360 else if (strcmp(how, "no") == 0) 1361 el->el_terminal.t_val[tv - tval] = 0; 1362 else { 1363 (void) fprintf(el->el_errfile, 1364 "%ls: Bad value `%s'.\n", argv[0], how); 1365 return -1; 1366 } 1367 terminal_setflags(el); 1368 return 0; 1369 } 1370 1371 /* 1372 * Numerics 1373 */ 1374 i = strtol(how, &ep, 10); 1375 if (*ep != '\0') { 1376 (void) fprintf(el->el_errfile, 1377 "%ls: Bad value `%s'.\n", argv[0], how); 1378 return -1; 1379 } 1380 el->el_terminal.t_val[tv - tval] = (int) i; 1381 i = 0; 1382 if (tv == &tval[T_co]) { 1383 el->el_terminal.t_size.v = Val(T_co); 1384 i++; 1385 } else if (tv == &tval[T_li]) { 1386 el->el_terminal.t_size.h = Val(T_li); 1387 i++; 1388 } 1389 if (i && terminal_change_size(el, Val(T_li), Val(T_co)) == -1) 1390 return -1; 1391 return 0; 1392 } 1393 1394 1395 /* terminal_gettc(): 1396 * Get the current terminal characteristics 1397 */ 1398 libedit_private 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 libedit_private int 1453 /*ARGSUSED*/ 1454 terminal_echotc(EditLine *el, int argc __attribute__((__unused__)), 1455 const wchar_t **argv) 1456 { 1457 char *cap, *scap; 1458 wchar_t *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 (wcscmp(*argv, L"tabs") == 0) { 1490 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no"); 1491 return 0; 1492 } else if (wcscmp(*argv, L"meta") == 0) { 1493 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no"); 1494 return 0; 1495 } else if (wcscmp(*argv, L"xn") == 0) { 1496 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ? 1497 "yes" : "no"); 1498 return 0; 1499 } else if (wcscmp(*argv, L"am") == 0) { 1500 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ? 1501 "yes" : "no"); 1502 return 0; 1503 } else if (wcscmp(*argv, L"baud") == 0) { 1504 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed); 1505 return 0; 1506 } else if (wcscmp(*argv, L"rows") == 0 || 1507 wcscmp(*argv, L"lines") == 0) { 1508 (void) fprintf(el->el_outfile, fmtd, Val(T_li)); 1509 return 0; 1510 } else if (wcscmp(*argv, L"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 `%ls' 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 `%ls'.\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 = wcstol(*argv, &ep, 10); 1590 if (*ep != '\0' || i < 0) { 1591 if (!silent) 1592 (void) fprintf(el->el_errfile, 1593 "echotc: Bad value `%ls' 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 `%ls" 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 = wcstol(*argv, &ep, 10); 1624 if (*ep != '\0' || i < 0) { 1625 if (!silent) 1626 (void) fprintf(el->el_errfile, 1627 "echotc: Bad value `%ls' 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 = wcstol(*argv, &ep, 10); 1640 if (*ep != '\0' || i < 0) { 1641 if (!silent) 1642 (void) fprintf(el->el_errfile, 1643 "echotc: Bad value `%ls' 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 `%ls'.\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 `%ls" 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