1 /* $NetBSD: terminal.c,v 1.35 2019/02/15 23:20:35 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 1.35 2019/02/15 23:20:35 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_malloc(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_malloc(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_malloc(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_malloc(T_str * 286 sizeof(*el->el_terminal.t_str)); 287 if (el->el_terminal.t_str == NULL) 288 goto fail4; 289 (void) memset(el->el_terminal.t_str, 0, T_str * 290 sizeof(*el->el_terminal.t_str)); 291 el->el_terminal.t_val = el_malloc(T_val * 292 sizeof(*el->el_terminal.t_val)); 293 if (el->el_terminal.t_val == NULL) 294 goto fail5; 295 (void) memset(el->el_terminal.t_val, 0, T_val * 296 sizeof(*el->el_terminal.t_val)); 297 (void) terminal_set(el, NULL); 298 terminal_init_arrow(el); 299 return 0; 300 fail5: 301 free(el->el_terminal.t_str); 302 el->el_terminal.t_str = NULL; 303 fail4: 304 free(el->el_terminal.t_fkey); 305 el->el_terminal.t_fkey = NULL; 306 fail3: 307 free(el->el_terminal.t_cap); 308 el->el_terminal.t_cap = NULL; 309 fail2: 310 free(el->el_terminal.t_buf); 311 el->el_terminal.t_buf = NULL; 312 fail1: 313 return -1; 314 } 315 316 /* terminal_end(): 317 * Clean up the terminal stuff 318 */ 319 libedit_private void 320 terminal_end(EditLine *el) 321 { 322 323 el_free(el->el_terminal.t_buf); 324 el->el_terminal.t_buf = NULL; 325 el_free(el->el_terminal.t_cap); 326 el->el_terminal.t_cap = NULL; 327 el->el_terminal.t_loc = 0; 328 el_free(el->el_terminal.t_str); 329 el->el_terminal.t_str = NULL; 330 el_free(el->el_terminal.t_val); 331 el->el_terminal.t_val = NULL; 332 el_free(el->el_terminal.t_fkey); 333 el->el_terminal.t_fkey = NULL; 334 terminal_free_display(el); 335 } 336 337 338 /* terminal_alloc(): 339 * Maintain a string pool for termcap strings 340 */ 341 static void 342 terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap) 343 { 344 char termbuf[TC_BUFSIZE]; 345 size_t tlen, clen; 346 char **tlist = el->el_terminal.t_str; 347 char **tmp, **str = &tlist[t - tstr]; 348 349 (void) memset(termbuf, 0, sizeof(termbuf)); 350 if (cap == NULL || *cap == '\0') { 351 *str = NULL; 352 return; 353 } else 354 clen = strlen(cap); 355 356 tlen = *str == NULL ? 0 : strlen(*str); 357 358 /* 359 * New string is shorter; no need to allocate space 360 */ 361 if (clen <= tlen) { 362 if (*str) 363 (void) strcpy(*str, cap); /* XXX strcpy is safe */ 364 return; 365 } 366 /* 367 * New string is longer; see if we have enough space to append 368 */ 369 if (el->el_terminal.t_loc + 3 < TC_BUFSIZE) { 370 /* XXX strcpy is safe */ 371 (void) strcpy(*str = &el->el_terminal.t_buf[ 372 el->el_terminal.t_loc], cap); 373 el->el_terminal.t_loc += clen + 1; /* one for \0 */ 374 return; 375 } 376 /* 377 * Compact our buffer; no need to check compaction, cause we know it 378 * fits... 379 */ 380 tlen = 0; 381 for (tmp = tlist; tmp < &tlist[T_str]; tmp++) 382 if (*tmp != NULL && **tmp != '\0' && *tmp != *str) { 383 char *ptr; 384 385 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++) 386 continue; 387 termbuf[tlen++] = '\0'; 388 } 389 memcpy(el->el_terminal.t_buf, termbuf, TC_BUFSIZE); 390 el->el_terminal.t_loc = tlen; 391 if (el->el_terminal.t_loc + 3 >= TC_BUFSIZE) { 392 (void) fprintf(el->el_errfile, 393 "Out of termcap string space.\n"); 394 return; 395 } 396 /* XXX strcpy is safe */ 397 (void) strcpy(*str = &el->el_terminal.t_buf[el->el_terminal.t_loc], 398 cap); 399 el->el_terminal.t_loc += (size_t)clen + 1; /* one for \0 */ 400 return; 401 } 402 403 404 /* terminal_rebuffer_display(): 405 * Rebuffer the display after the screen changed size 406 */ 407 static int 408 terminal_rebuffer_display(EditLine *el) 409 { 410 coord_t *c = &el->el_terminal.t_size; 411 412 terminal_free_display(el); 413 414 c->h = Val(T_co); 415 c->v = Val(T_li); 416 417 if (terminal_alloc_display(el) == -1) 418 return -1; 419 return 0; 420 } 421 422 static wint_t ** 423 terminal_alloc_buffer(EditLine *el) 424 { 425 wint_t **b; 426 coord_t *c = &el->el_terminal.t_size; 427 int i; 428 429 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1)); 430 if (b == NULL) 431 return NULL; 432 for (i = 0; i < c->v; i++) { 433 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1)); 434 if (b[i] == NULL) { 435 while (--i >= 0) 436 el_free(b[i]); 437 el_free(b); 438 return NULL; 439 } 440 } 441 b[c->v] = NULL; 442 return b; 443 } 444 445 static void 446 terminal_free_buffer(wint_t ***bp) 447 { 448 wint_t **b; 449 wint_t **bufp; 450 451 if (*bp == NULL) 452 return; 453 454 b = *bp; 455 *bp = NULL; 456 457 for (bufp = b; *bufp != NULL; bufp++) 458 el_free(*bufp); 459 el_free(b); 460 } 461 462 /* terminal_alloc_display(): 463 * Allocate a new display. 464 */ 465 static int 466 terminal_alloc_display(EditLine *el) 467 { 468 el->el_display = terminal_alloc_buffer(el); 469 if (el->el_display == NULL) 470 goto done; 471 el->el_vdisplay = terminal_alloc_buffer(el); 472 if (el->el_vdisplay == NULL) 473 goto done; 474 return 0; 475 done: 476 terminal_free_display(el); 477 return -1; 478 } 479 480 481 /* terminal_free_display(): 482 * Free the display buffers 483 */ 484 static void 485 terminal_free_display(EditLine *el) 486 { 487 terminal_free_buffer(&el->el_display); 488 terminal_free_buffer(&el->el_vdisplay); 489 } 490 491 492 /* terminal_move_to_line(): 493 * move to line <where> (first line == 0) 494 * as efficiently as possible 495 */ 496 libedit_private void 497 terminal_move_to_line(EditLine *el, int where) 498 { 499 int del; 500 501 if (where == el->el_cursor.v) 502 return; 503 504 if (where > el->el_terminal.t_size.v) { 505 #ifdef DEBUG_SCREEN 506 (void) fprintf(el->el_errfile, 507 "%s: where is ridiculous: %d\r\n", __func__, where); 508 #endif /* DEBUG_SCREEN */ 509 return; 510 } 511 if ((del = where - el->el_cursor.v) > 0) { 512 if ((del > 1) && GoodStr(T_DO)) { 513 terminal_tputs(el, tgoto(Str(T_DO), del, del), del); 514 del = 0; 515 } else { 516 for (; del > 0; del--) 517 terminal__putc(el, '\n'); 518 /* because the \n will become \r\n */ 519 el->el_cursor.h = 0; 520 } 521 } else { /* del < 0 */ 522 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up))) 523 terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del); 524 else { 525 if (GoodStr(T_up)) 526 for (; del < 0; del++) 527 terminal_tputs(el, Str(T_up), 1); 528 } 529 } 530 el->el_cursor.v = where;/* now where is here */ 531 } 532 533 534 /* terminal_move_to_char(): 535 * Move to the character position specified 536 */ 537 libedit_private void 538 terminal_move_to_char(EditLine *el, int where) 539 { 540 int del, i; 541 542 mc_again: 543 if (where == el->el_cursor.h) 544 return; 545 546 if (where > el->el_terminal.t_size.h) { 547 #ifdef DEBUG_SCREEN 548 (void) fprintf(el->el_errfile, 549 "%s: where is ridiculous: %d\r\n", __func__, where); 550 #endif /* DEBUG_SCREEN */ 551 return; 552 } 553 if (!where) { /* if where is first column */ 554 terminal__putc(el, '\r'); /* do a CR */ 555 el->el_cursor.h = 0; 556 return; 557 } 558 del = where - el->el_cursor.h; 559 560 if ((del < -4 || del > 4) && GoodStr(T_ch)) 561 /* go there directly */ 562 terminal_tputs(el, tgoto(Str(T_ch), where, where), where); 563 else { 564 if (del > 0) { /* moving forward */ 565 if ((del > 4) && GoodStr(T_RI)) 566 terminal_tputs(el, tgoto(Str(T_RI), del, del), 567 del); 568 else { 569 /* if I can do tabs, use them */ 570 if (EL_CAN_TAB) { 571 if ((el->el_cursor.h & 0370) != 572 (where & ~0x7) 573 && (el->el_display[ 574 el->el_cursor.v][where & 0370] != 575 MB_FILL_CHAR) 576 ) { 577 /* if not within tab stop */ 578 for (i = 579 (el->el_cursor.h & 0370); 580 i < (where & ~0x7); 581 i += 8) 582 terminal__putc(el, 583 '\t'); 584 /* then tab over */ 585 el->el_cursor.h = where & ~0x7; 586 } 587 } 588 /* 589 * it's usually cheaper to just write the 590 * chars, so we do. 591 */ 592 /* 593 * NOTE THAT terminal_overwrite() WILL CHANGE 594 * el->el_cursor.h!!! 595 */ 596 terminal_overwrite(el, &el->el_display[ 597 el->el_cursor.v][el->el_cursor.h], 598 (size_t)(where - el->el_cursor.h)); 599 600 } 601 } else { /* del < 0 := moving backward */ 602 if ((-del > 4) && GoodStr(T_LE)) 603 terminal_tputs(el, tgoto(Str(T_LE), -del, -del), 604 -del); 605 else { /* can't go directly there */ 606 /* 607 * if the "cost" is greater than the "cost" 608 * from col 0 609 */ 610 if (EL_CAN_TAB ? 611 ((unsigned int)-del > 612 (((unsigned int) where >> 3) + 613 (where & 07))) 614 : (-del > where)) { 615 terminal__putc(el, '\r');/* do a CR */ 616 el->el_cursor.h = 0; 617 goto mc_again; /* and try again */ 618 } 619 for (i = 0; i < -del; i++) 620 terminal__putc(el, '\b'); 621 } 622 } 623 } 624 el->el_cursor.h = where; /* now where is here */ 625 } 626 627 628 /* terminal_overwrite(): 629 * Overstrike num characters 630 * Assumes MB_FILL_CHARs are present to keep the column count correct 631 */ 632 libedit_private void 633 terminal_overwrite(EditLine *el, const wchar_t *cp, size_t n) 634 { 635 if (n == 0) 636 return; 637 638 if (n > (size_t)el->el_terminal.t_size.h) { 639 #ifdef DEBUG_SCREEN 640 (void) fprintf(el->el_errfile, 641 "%s: n is ridiculous: %zu\r\n", __func__, n); 642 #endif /* DEBUG_SCREEN */ 643 return; 644 } 645 646 do { 647 /* terminal__putc() ignores any MB_FILL_CHARs */ 648 terminal__putc(el, *cp++); 649 el->el_cursor.h++; 650 } while (--n); 651 652 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */ 653 if (EL_HAS_AUTO_MARGINS) { /* yes */ 654 el->el_cursor.h = 0; 655 el->el_cursor.v++; 656 if (EL_HAS_MAGIC_MARGINS) { 657 /* force the wrap to avoid the "magic" 658 * situation */ 659 wchar_t c; 660 if ((c = el->el_display[el->el_cursor.v] 661 [el->el_cursor.h]) != '\0') { 662 terminal_overwrite(el, &c, (size_t)1); 663 while (el->el_display[el->el_cursor.v] 664 [el->el_cursor.h] == MB_FILL_CHAR) 665 el->el_cursor.h++; 666 } else { 667 terminal__putc(el, ' '); 668 el->el_cursor.h = 1; 669 } 670 } 671 } else /* no wrap, but cursor stays on screen */ 672 el->el_cursor.h = el->el_terminal.t_size.h - 1; 673 } 674 } 675 676 677 /* terminal_deletechars(): 678 * Delete num characters 679 */ 680 libedit_private void 681 terminal_deletechars(EditLine *el, int num) 682 { 683 if (num <= 0) 684 return; 685 686 if (!EL_CAN_DELETE) { 687 #ifdef DEBUG_EDIT 688 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n"); 689 #endif /* DEBUG_EDIT */ 690 return; 691 } 692 if (num > el->el_terminal.t_size.h) { 693 #ifdef DEBUG_SCREEN 694 (void) fprintf(el->el_errfile, 695 "%s: num is ridiculous: %d\r\n", __func__, num); 696 #endif /* DEBUG_SCREEN */ 697 return; 698 } 699 if (GoodStr(T_DC)) /* if I have multiple delete */ 700 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more 701 * expen. */ 702 terminal_tputs(el, tgoto(Str(T_DC), num, num), num); 703 return; 704 } 705 if (GoodStr(T_dm)) /* if I have delete mode */ 706 terminal_tputs(el, Str(T_dm), 1); 707 708 if (GoodStr(T_dc)) /* else do one at a time */ 709 while (num--) 710 terminal_tputs(el, Str(T_dc), 1); 711 712 if (GoodStr(T_ed)) /* if I have delete mode */ 713 terminal_tputs(el, Str(T_ed), 1); 714 } 715 716 717 /* terminal_insertwrite(): 718 * Puts terminal in insert character mode or inserts num 719 * characters in the line 720 * Assumes MB_FILL_CHARs are present to keep column count correct 721 */ 722 libedit_private void 723 terminal_insertwrite(EditLine *el, wchar_t *cp, int num) 724 { 725 if (num <= 0) 726 return; 727 if (!EL_CAN_INSERT) { 728 #ifdef DEBUG_EDIT 729 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n"); 730 #endif /* DEBUG_EDIT */ 731 return; 732 } 733 if (num > el->el_terminal.t_size.h) { 734 #ifdef DEBUG_SCREEN 735 (void) fprintf(el->el_errfile, 736 "%s: num is ridiculous: %d\r\n", __func__, num); 737 #endif /* DEBUG_SCREEN */ 738 return; 739 } 740 if (GoodStr(T_IC)) /* if I have multiple insert */ 741 if ((num > 1) || !GoodStr(T_ic)) { 742 /* if ic would be more expensive */ 743 terminal_tputs(el, tgoto(Str(T_IC), num, num), num); 744 terminal_overwrite(el, cp, (size_t)num); 745 /* this updates el_cursor.h */ 746 return; 747 } 748 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */ 749 terminal_tputs(el, Str(T_im), 1); 750 751 el->el_cursor.h += num; 752 do 753 terminal__putc(el, *cp++); 754 while (--num); 755 756 if (GoodStr(T_ip)) /* have to make num chars insert */ 757 terminal_tputs(el, Str(T_ip), 1); 758 759 terminal_tputs(el, Str(T_ei), 1); 760 return; 761 } 762 do { 763 if (GoodStr(T_ic)) /* have to make num chars insert */ 764 terminal_tputs(el, Str(T_ic), 1); 765 766 terminal__putc(el, *cp++); 767 768 el->el_cursor.h++; 769 770 if (GoodStr(T_ip)) /* have to make num chars insert */ 771 terminal_tputs(el, Str(T_ip), 1); 772 /* pad the inserted char */ 773 774 } while (--num); 775 } 776 777 778 /* terminal_clear_EOL(): 779 * clear to end of line. There are num characters to clear 780 */ 781 libedit_private void 782 terminal_clear_EOL(EditLine *el, int num) 783 { 784 int i; 785 786 if (EL_CAN_CEOL && GoodStr(T_ce)) 787 terminal_tputs(el, Str(T_ce), 1); 788 else { 789 for (i = 0; i < num; i++) 790 terminal__putc(el, ' '); 791 el->el_cursor.h += num; /* have written num spaces */ 792 } 793 } 794 795 796 /* terminal_clear_screen(): 797 * Clear the screen 798 */ 799 libedit_private void 800 terminal_clear_screen(EditLine *el) 801 { /* clear the whole screen and home */ 802 803 if (GoodStr(T_cl)) 804 /* send the clear screen code */ 805 terminal_tputs(el, Str(T_cl), Val(T_li)); 806 else if (GoodStr(T_ho) && GoodStr(T_cd)) { 807 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */ 808 /* clear to bottom of screen */ 809 terminal_tputs(el, Str(T_cd), Val(T_li)); 810 } else { 811 terminal__putc(el, '\r'); 812 terminal__putc(el, '\n'); 813 } 814 } 815 816 817 /* terminal_beep(): 818 * Beep the way the terminal wants us 819 */ 820 libedit_private void 821 terminal_beep(EditLine *el) 822 { 823 if (GoodStr(T_bl)) 824 /* what termcap says we should use */ 825 terminal_tputs(el, Str(T_bl), 1); 826 else 827 terminal__putc(el, '\007'); /* an ASCII bell; ^G */ 828 } 829 830 831 libedit_private void 832 terminal_get(EditLine *el, const char **term) 833 { 834 *term = el->el_terminal.t_name; 835 } 836 837 838 /* terminal_set(): 839 * Read in the terminal capabilities from the requested terminal 840 */ 841 libedit_private int 842 terminal_set(EditLine *el, const char *term) 843 { 844 int i; 845 char buf[TC_BUFSIZE]; 846 char *area; 847 const struct termcapstr *t; 848 sigset_t oset, nset; 849 int lins, cols; 850 851 (void) sigemptyset(&nset); 852 (void) sigaddset(&nset, SIGWINCH); 853 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 854 855 area = buf; 856 857 858 if (term == NULL) 859 term = getenv("TERM"); 860 861 if (!term || !term[0]) 862 term = "dumb"; 863 864 if (strcmp(term, "emacs") == 0) 865 el->el_flags |= EDIT_DISABLED; 866 867 (void) memset(el->el_terminal.t_cap, 0, TC_BUFSIZE); 868 869 i = tgetent(el->el_terminal.t_cap, term); 870 871 if (i <= 0) { 872 if (i == -1) 873 (void) fprintf(el->el_errfile, 874 "Cannot read termcap database;\n"); 875 else if (i == 0) 876 (void) fprintf(el->el_errfile, 877 "No entry for terminal type \"%s\";\n", term); 878 (void) fprintf(el->el_errfile, 879 "using dumb terminal settings.\n"); 880 Val(T_co) = 80; /* do a dumb terminal */ 881 Val(T_pt) = Val(T_km) = Val(T_li) = 0; 882 Val(T_xt) = Val(T_MT); 883 for (t = tstr; t->name != NULL; t++) 884 terminal_alloc(el, t, NULL); 885 } else { 886 /* auto/magic margins */ 887 Val(T_am) = tgetflag("am"); 888 Val(T_xn) = tgetflag("xn"); 889 /* Can we tab */ 890 Val(T_pt) = tgetflag("pt"); 891 Val(T_xt) = tgetflag("xt"); 892 /* do we have a meta? */ 893 Val(T_km) = tgetflag("km"); 894 Val(T_MT) = tgetflag("MT"); 895 /* Get the size */ 896 Val(T_co) = tgetnum("co"); 897 Val(T_li) = tgetnum("li"); 898 for (t = tstr; t->name != NULL; t++) { 899 /* XXX: some systems' tgetstr needs non const */ 900 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name), 901 &area)); 902 } 903 } 904 905 if (Val(T_co) < 2) 906 Val(T_co) = 80; /* just in case */ 907 if (Val(T_li) < 1) 908 Val(T_li) = 24; 909 910 el->el_terminal.t_size.v = Val(T_co); 911 el->el_terminal.t_size.h = Val(T_li); 912 913 terminal_setflags(el); 914 915 /* get the correct window size */ 916 (void) terminal_get_size(el, &lins, &cols); 917 if (terminal_change_size(el, lins, cols) == -1) 918 return -1; 919 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 920 terminal_bind_arrow(el); 921 el->el_terminal.t_name = term; 922 return i <= 0 ? -1 : 0; 923 } 924 925 926 /* terminal_get_size(): 927 * Return the new window size in lines and cols, and 928 * true if the size was changed. 929 */ 930 libedit_private int 931 terminal_get_size(EditLine *el, int *lins, int *cols) 932 { 933 934 *cols = Val(T_co); 935 *lins = Val(T_li); 936 937 #ifdef TIOCGWINSZ 938 { 939 struct winsize ws; 940 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) { 941 if (ws.ws_col) 942 *cols = ws.ws_col; 943 if (ws.ws_row) 944 *lins = ws.ws_row; 945 } 946 } 947 #endif 948 #ifdef TIOCGSIZE 949 { 950 struct ttysize ts; 951 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) { 952 if (ts.ts_cols) 953 *cols = ts.ts_cols; 954 if (ts.ts_lines) 955 *lins = ts.ts_lines; 956 } 957 } 958 #endif 959 return Val(T_co) != *cols || Val(T_li) != *lins; 960 } 961 962 963 /* terminal_change_size(): 964 * Change the size of the terminal 965 */ 966 libedit_private int 967 terminal_change_size(EditLine *el, int lins, int cols) 968 { 969 /* 970 * Just in case 971 */ 972 Val(T_co) = (cols < 2) ? 80 : cols; 973 Val(T_li) = (lins < 1) ? 24 : lins; 974 975 /* re-make display buffers */ 976 if (terminal_rebuffer_display(el) == -1) 977 return -1; 978 re_clear_display(el); 979 return 0; 980 } 981 982 983 /* terminal_init_arrow(): 984 * Initialize the arrow key bindings from termcap 985 */ 986 static void 987 terminal_init_arrow(EditLine *el) 988 { 989 funckey_t *arrow = el->el_terminal.t_fkey; 990 991 arrow[A_K_DN].name = L"down"; 992 arrow[A_K_DN].key = T_kd; 993 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY; 994 arrow[A_K_DN].type = XK_CMD; 995 996 arrow[A_K_UP].name = L"up"; 997 arrow[A_K_UP].key = T_ku; 998 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY; 999 arrow[A_K_UP].type = XK_CMD; 1000 1001 arrow[A_K_LT].name = L"left"; 1002 arrow[A_K_LT].key = T_kl; 1003 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR; 1004 arrow[A_K_LT].type = XK_CMD; 1005 1006 arrow[A_K_RT].name = L"right"; 1007 arrow[A_K_RT].key = T_kr; 1008 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR; 1009 arrow[A_K_RT].type = XK_CMD; 1010 1011 arrow[A_K_HO].name = L"home"; 1012 arrow[A_K_HO].key = T_kh; 1013 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG; 1014 arrow[A_K_HO].type = XK_CMD; 1015 1016 arrow[A_K_EN].name = L"end"; 1017 arrow[A_K_EN].key = T_at7; 1018 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END; 1019 arrow[A_K_EN].type = XK_CMD; 1020 1021 arrow[A_K_DE].name = L"delete"; 1022 arrow[A_K_DE].key = T_kD; 1023 arrow[A_K_DE].fun.cmd = ED_DELETE_NEXT_CHAR; 1024 arrow[A_K_DE].type = XK_CMD; 1025 } 1026 1027 1028 /* terminal_reset_arrow(): 1029 * Reset arrow key bindings 1030 */ 1031 static void 1032 terminal_reset_arrow(EditLine *el) 1033 { 1034 funckey_t *arrow = el->el_terminal.t_fkey; 1035 static const wchar_t strA[] = L"\033[A"; 1036 static const wchar_t strB[] = L"\033[B"; 1037 static const wchar_t strC[] = L"\033[C"; 1038 static const wchar_t strD[] = L"\033[D"; 1039 static const wchar_t strH[] = L"\033[H"; 1040 static const wchar_t strF[] = L"\033[F"; 1041 static const wchar_t stOA[] = L"\033OA"; 1042 static const wchar_t stOB[] = L"\033OB"; 1043 static const wchar_t stOC[] = L"\033OC"; 1044 static const wchar_t stOD[] = L"\033OD"; 1045 static const wchar_t stOH[] = L"\033OH"; 1046 static const wchar_t stOF[] = L"\033OF"; 1047 1048 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1049 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1050 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1051 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1052 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1053 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1054 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1055 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1056 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1057 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1058 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1059 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1060 1061 if (el->el_map.type != MAP_VI) 1062 return; 1063 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1064 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1065 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1066 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1067 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1068 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1069 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1070 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1071 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1072 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1073 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1074 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1075 } 1076 1077 1078 /* terminal_set_arrow(): 1079 * Set an arrow key binding 1080 */ 1081 libedit_private int 1082 terminal_set_arrow(EditLine *el, const wchar_t *name, keymacro_value_t *fun, 1083 int type) 1084 { 1085 funckey_t *arrow = el->el_terminal.t_fkey; 1086 int i; 1087 1088 for (i = 0; i < A_K_NKEYS; i++) 1089 if (wcscmp(name, arrow[i].name) == 0) { 1090 arrow[i].fun = *fun; 1091 arrow[i].type = type; 1092 return 0; 1093 } 1094 return -1; 1095 } 1096 1097 1098 /* terminal_clear_arrow(): 1099 * Clear an arrow key binding 1100 */ 1101 libedit_private int 1102 terminal_clear_arrow(EditLine *el, const wchar_t *name) 1103 { 1104 funckey_t *arrow = el->el_terminal.t_fkey; 1105 int i; 1106 1107 for (i = 0; i < A_K_NKEYS; i++) 1108 if (wcscmp(name, arrow[i].name) == 0) { 1109 arrow[i].type = XK_NOD; 1110 return 0; 1111 } 1112 return -1; 1113 } 1114 1115 1116 /* terminal_print_arrow(): 1117 * Print the arrow key bindings 1118 */ 1119 libedit_private void 1120 terminal_print_arrow(EditLine *el, const wchar_t *name) 1121 { 1122 int i; 1123 funckey_t *arrow = el->el_terminal.t_fkey; 1124 1125 for (i = 0; i < A_K_NKEYS; i++) 1126 if (*name == '\0' || wcscmp(name, arrow[i].name) == 0) 1127 if (arrow[i].type != XK_NOD) 1128 keymacro_kprint(el, arrow[i].name, 1129 &arrow[i].fun, arrow[i].type); 1130 } 1131 1132 1133 /* terminal_bind_arrow(): 1134 * Bind the arrow keys 1135 */ 1136 libedit_private void 1137 terminal_bind_arrow(EditLine *el) 1138 { 1139 el_action_t *map; 1140 const el_action_t *dmap; 1141 int i, j; 1142 char *p; 1143 funckey_t *arrow = el->el_terminal.t_fkey; 1144 1145 /* Check if the components needed are initialized */ 1146 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL) 1147 return; 1148 1149 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key; 1150 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs; 1151 1152 terminal_reset_arrow(el); 1153 1154 for (i = 0; i < A_K_NKEYS; i++) { 1155 wchar_t wt_str[VISUAL_WIDTH_MAX]; 1156 wchar_t *px; 1157 size_t n; 1158 1159 p = el->el_terminal.t_str[arrow[i].key]; 1160 if (!p || !*p) 1161 continue; 1162 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n) 1163 wt_str[n] = p[n]; 1164 while (n < VISUAL_WIDTH_MAX) 1165 wt_str[n++] = '\0'; 1166 px = wt_str; 1167 j = (unsigned char) *p; 1168 /* 1169 * Assign the arrow keys only if: 1170 * 1171 * 1. They are multi-character arrow keys and the user 1172 * has not re-assigned the leading character, or 1173 * has re-assigned the leading character to be 1174 * ED_SEQUENCE_LEAD_IN 1175 * 2. They are single arrow keys pointing to an 1176 * unassigned key. 1177 */ 1178 if (arrow[i].type == XK_NOD) 1179 keymacro_clear(el, map, px); 1180 else { 1181 if (p[1] && (dmap[j] == map[j] || 1182 map[j] == ED_SEQUENCE_LEAD_IN)) { 1183 keymacro_add(el, px, &arrow[i].fun, 1184 arrow[i].type); 1185 map[j] = ED_SEQUENCE_LEAD_IN; 1186 } else if (map[j] == ED_UNASSIGNED) { 1187 keymacro_clear(el, map, px); 1188 if (arrow[i].type == XK_CMD) 1189 map[j] = arrow[i].fun.cmd; 1190 else 1191 keymacro_add(el, px, &arrow[i].fun, 1192 arrow[i].type); 1193 } 1194 } 1195 } 1196 } 1197 1198 /* terminal_putc(): 1199 * Add a character 1200 */ 1201 static int 1202 terminal_putc(int c) 1203 { 1204 if (terminal_outfile == NULL) 1205 return -1; 1206 return fputc(c, terminal_outfile); 1207 } 1208 1209 static void 1210 terminal_tputs(EditLine *el, const char *cap, int affcnt) 1211 { 1212 #ifdef _REENTRANT 1213 pthread_mutex_lock(&terminal_mutex); 1214 #endif 1215 terminal_outfile = el->el_outfile; 1216 (void)tputs(cap, affcnt, terminal_putc); 1217 #ifdef _REENTRANT 1218 pthread_mutex_unlock(&terminal_mutex); 1219 #endif 1220 } 1221 1222 /* terminal__putc(): 1223 * Add a character 1224 */ 1225 libedit_private int 1226 terminal__putc(EditLine *el, wint_t c) 1227 { 1228 char buf[MB_LEN_MAX +1]; 1229 ssize_t i; 1230 if (c == (wint_t)MB_FILL_CHAR) 1231 return 0; 1232 if (c & EL_LITERAL) 1233 return fputs(literal_get(el, c), el->el_outfile); 1234 i = ct_encode_char(buf, (size_t)MB_LEN_MAX, c); 1235 if (i <= 0) 1236 return (int)i; 1237 buf[i] = '\0'; 1238 return fputs(buf, el->el_outfile); 1239 } 1240 1241 /* terminal__flush(): 1242 * Flush output 1243 */ 1244 libedit_private void 1245 terminal__flush(EditLine *el) 1246 { 1247 1248 (void) fflush(el->el_outfile); 1249 } 1250 1251 /* terminal_writec(): 1252 * Write the given character out, in a human readable form 1253 */ 1254 libedit_private void 1255 terminal_writec(EditLine *el, wint_t c) 1256 { 1257 wchar_t visbuf[VISUAL_WIDTH_MAX +1]; 1258 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c); 1259 if (vcnt < 0) 1260 vcnt = 0; 1261 visbuf[vcnt] = '\0'; 1262 terminal_overwrite(el, visbuf, (size_t)vcnt); 1263 terminal__flush(el); 1264 } 1265 1266 1267 /* terminal_telltc(): 1268 * Print the current termcap characteristics 1269 */ 1270 libedit_private int 1271 /*ARGSUSED*/ 1272 terminal_telltc(EditLine *el, int argc __attribute__((__unused__)), 1273 const wchar_t **argv __attribute__((__unused__))) 1274 { 1275 const struct termcapstr *t; 1276 char **ts; 1277 1278 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n"); 1279 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n"); 1280 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n", 1281 Val(T_co), Val(T_li)); 1282 (void) fprintf(el->el_outfile, 1283 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no"); 1284 (void) fprintf(el->el_outfile, 1285 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not "); 1286 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n", 1287 EL_HAS_AUTO_MARGINS ? "has" : "does not have"); 1288 if (EL_HAS_AUTO_MARGINS) 1289 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n", 1290 EL_HAS_MAGIC_MARGINS ? "has" : "does not have"); 1291 1292 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) { 1293 const char *ub; 1294 if (*ts && **ts) { 1295 ub = ct_encode_string(ct_visual_string( 1296 ct_decode_string(*ts, &el->el_scratch), 1297 &el->el_visual), &el->el_scratch); 1298 } else { 1299 ub = "(empty)"; 1300 } 1301 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n", 1302 t->long_name, t->name, ub); 1303 } 1304 (void) fputc('\n', el->el_outfile); 1305 return 0; 1306 } 1307 1308 1309 /* terminal_settc(): 1310 * Change the current terminal characteristics 1311 */ 1312 libedit_private int 1313 /*ARGSUSED*/ 1314 terminal_settc(EditLine *el, int argc __attribute__((__unused__)), 1315 const wchar_t **argv) 1316 { 1317 const struct termcapstr *ts; 1318 const struct termcapval *tv; 1319 char what[8], how[8]; 1320 1321 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1322 return -1; 1323 1324 strncpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what)); 1325 what[sizeof(what) - 1] = '\0'; 1326 strncpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how)); 1327 how[sizeof(how) - 1] = '\0'; 1328 1329 /* 1330 * Do the strings first 1331 */ 1332 for (ts = tstr; ts->name != NULL; ts++) 1333 if (strcmp(ts->name, what) == 0) 1334 break; 1335 1336 if (ts->name != NULL) { 1337 terminal_alloc(el, ts, how); 1338 terminal_setflags(el); 1339 return 0; 1340 } 1341 /* 1342 * Do the numeric ones second 1343 */ 1344 for (tv = tval; tv->name != NULL; tv++) 1345 if (strcmp(tv->name, what) == 0) 1346 break; 1347 1348 if (tv->name != NULL) 1349 return -1; 1350 1351 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1352 tv == &tval[T_am] || tv == &tval[T_xn]) { 1353 if (strcmp(how, "yes") == 0) 1354 el->el_terminal.t_val[tv - tval] = 1; 1355 else if (strcmp(how, "no") == 0) 1356 el->el_terminal.t_val[tv - tval] = 0; 1357 else { 1358 (void) fprintf(el->el_errfile, 1359 "%ls: Bad value `%s'.\n", argv[0], how); 1360 return -1; 1361 } 1362 terminal_setflags(el); 1363 if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1) 1364 return -1; 1365 return 0; 1366 } else { 1367 long i; 1368 char *ep; 1369 1370 i = strtol(how, &ep, 10); 1371 if (*ep != '\0') { 1372 (void) fprintf(el->el_errfile, 1373 "%ls: Bad value `%s'.\n", argv[0], how); 1374 return -1; 1375 } 1376 el->el_terminal.t_val[tv - tval] = (int) i; 1377 el->el_terminal.t_size.v = Val(T_co); 1378 el->el_terminal.t_size.h = Val(T_li); 1379 if (tv == &tval[T_co] || tv == &tval[T_li]) 1380 if (terminal_change_size(el, Val(T_li), Val(T_co)) 1381 == -1) 1382 return -1; 1383 return 0; 1384 } 1385 } 1386 1387 1388 /* terminal_gettc(): 1389 * Get the current terminal characteristics 1390 */ 1391 libedit_private int 1392 /*ARGSUSED*/ 1393 terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv) 1394 { 1395 const struct termcapstr *ts; 1396 const struct termcapval *tv; 1397 char *what; 1398 void *how; 1399 1400 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1401 return -1; 1402 1403 what = argv[1]; 1404 how = argv[2]; 1405 1406 /* 1407 * Do the strings first 1408 */ 1409 for (ts = tstr; ts->name != NULL; ts++) 1410 if (strcmp(ts->name, what) == 0) 1411 break; 1412 1413 if (ts->name != NULL) { 1414 *(char **)how = el->el_terminal.t_str[ts - tstr]; 1415 return 0; 1416 } 1417 /* 1418 * Do the numeric ones second 1419 */ 1420 for (tv = tval; tv->name != NULL; tv++) 1421 if (strcmp(tv->name, what) == 0) 1422 break; 1423 1424 if (tv->name == NULL) 1425 return -1; 1426 1427 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1428 tv == &tval[T_am] || tv == &tval[T_xn]) { 1429 static char yes[] = "yes"; 1430 static char no[] = "no"; 1431 if (el->el_terminal.t_val[tv - tval]) 1432 *(char **)how = yes; 1433 else 1434 *(char **)how = no; 1435 return 0; 1436 } else { 1437 *(int *)how = el->el_terminal.t_val[tv - tval]; 1438 return 0; 1439 } 1440 } 1441 1442 /* terminal_echotc(): 1443 * Print the termcap string out with variable substitution 1444 */ 1445 libedit_private int 1446 /*ARGSUSED*/ 1447 terminal_echotc(EditLine *el, int argc __attribute__((__unused__)), 1448 const wchar_t **argv) 1449 { 1450 char *cap, *scap; 1451 wchar_t *ep; 1452 int arg_need, arg_cols, arg_rows; 1453 int verbose = 0, silent = 0; 1454 char *area; 1455 static const char fmts[] = "%s\n", fmtd[] = "%d\n"; 1456 const struct termcapstr *t; 1457 char buf[TC_BUFSIZE]; 1458 long i; 1459 1460 area = buf; 1461 1462 if (argv == NULL || argv[1] == NULL) 1463 return -1; 1464 argv++; 1465 1466 if (argv[0][0] == '-') { 1467 switch (argv[0][1]) { 1468 case 'v': 1469 verbose = 1; 1470 break; 1471 case 's': 1472 silent = 1; 1473 break; 1474 default: 1475 /* stderror(ERR_NAME | ERR_TCUSAGE); */ 1476 break; 1477 } 1478 argv++; 1479 } 1480 if (!*argv || *argv[0] == '\0') 1481 return 0; 1482 if (wcscmp(*argv, L"tabs") == 0) { 1483 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no"); 1484 return 0; 1485 } else if (wcscmp(*argv, L"meta") == 0) { 1486 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no"); 1487 return 0; 1488 } else if (wcscmp(*argv, L"xn") == 0) { 1489 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ? 1490 "yes" : "no"); 1491 return 0; 1492 } else if (wcscmp(*argv, L"am") == 0) { 1493 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ? 1494 "yes" : "no"); 1495 return 0; 1496 } else if (wcscmp(*argv, L"baud") == 0) { 1497 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed); 1498 return 0; 1499 } else if (wcscmp(*argv, L"rows") == 0 || 1500 wcscmp(*argv, L"lines") == 0) { 1501 (void) fprintf(el->el_outfile, fmtd, Val(T_li)); 1502 return 0; 1503 } else if (wcscmp(*argv, L"cols") == 0) { 1504 (void) fprintf(el->el_outfile, fmtd, Val(T_co)); 1505 return 0; 1506 } 1507 /* 1508 * Try to use our local definition first 1509 */ 1510 scap = NULL; 1511 for (t = tstr; t->name != NULL; t++) 1512 if (strcmp(t->name, 1513 ct_encode_string(*argv, &el->el_scratch)) == 0) { 1514 scap = el->el_terminal.t_str[t - tstr]; 1515 break; 1516 } 1517 if (t->name == NULL) { 1518 /* XXX: some systems' tgetstr needs non const */ 1519 scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area); 1520 } 1521 if (!scap || scap[0] == '\0') { 1522 if (!silent) 1523 (void) fprintf(el->el_errfile, 1524 "echotc: Termcap parameter `%ls' not found.\n", 1525 *argv); 1526 return -1; 1527 } 1528 /* 1529 * Count home many values we need for this capability. 1530 */ 1531 for (cap = scap, arg_need = 0; *cap; cap++) 1532 if (*cap == '%') 1533 switch (*++cap) { 1534 case 'd': 1535 case '2': 1536 case '3': 1537 case '.': 1538 case '+': 1539 arg_need++; 1540 break; 1541 case '%': 1542 case '>': 1543 case 'i': 1544 case 'r': 1545 case 'n': 1546 case 'B': 1547 case 'D': 1548 break; 1549 default: 1550 /* 1551 * hpux has lot's of them... 1552 */ 1553 if (verbose) 1554 (void) fprintf(el->el_errfile, 1555 "echotc: Warning: unknown termcap %% `%c'.\n", 1556 *cap); 1557 /* This is bad, but I won't complain */ 1558 break; 1559 } 1560 1561 switch (arg_need) { 1562 case 0: 1563 argv++; 1564 if (*argv && *argv[0]) { 1565 if (!silent) 1566 (void) fprintf(el->el_errfile, 1567 "echotc: Warning: Extra argument `%ls'.\n", 1568 *argv); 1569 return -1; 1570 } 1571 terminal_tputs(el, scap, 1); 1572 break; 1573 case 1: 1574 argv++; 1575 if (!*argv || *argv[0] == '\0') { 1576 if (!silent) 1577 (void) fprintf(el->el_errfile, 1578 "echotc: Warning: Missing argument.\n"); 1579 return -1; 1580 } 1581 arg_cols = 0; 1582 i = wcstol(*argv, &ep, 10); 1583 if (*ep != '\0' || i < 0) { 1584 if (!silent) 1585 (void) fprintf(el->el_errfile, 1586 "echotc: Bad value `%ls' for rows.\n", 1587 *argv); 1588 return -1; 1589 } 1590 arg_rows = (int) i; 1591 argv++; 1592 if (*argv && *argv[0]) { 1593 if (!silent) 1594 (void) fprintf(el->el_errfile, 1595 "echotc: Warning: Extra argument `%ls" 1596 "'.\n", *argv); 1597 return -1; 1598 } 1599 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1); 1600 break; 1601 default: 1602 /* This is wrong, but I will ignore it... */ 1603 if (verbose) 1604 (void) fprintf(el->el_errfile, 1605 "echotc: Warning: Too many required arguments (%d).\n", 1606 arg_need); 1607 /* FALLTHROUGH */ 1608 case 2: 1609 argv++; 1610 if (!*argv || *argv[0] == '\0') { 1611 if (!silent) 1612 (void) fprintf(el->el_errfile, 1613 "echotc: Warning: Missing argument.\n"); 1614 return -1; 1615 } 1616 i = wcstol(*argv, &ep, 10); 1617 if (*ep != '\0' || i < 0) { 1618 if (!silent) 1619 (void) fprintf(el->el_errfile, 1620 "echotc: Bad value `%ls' for cols.\n", 1621 *argv); 1622 return -1; 1623 } 1624 arg_cols = (int) i; 1625 argv++; 1626 if (!*argv || *argv[0] == '\0') { 1627 if (!silent) 1628 (void) fprintf(el->el_errfile, 1629 "echotc: Warning: Missing argument.\n"); 1630 return -1; 1631 } 1632 i = wcstol(*argv, &ep, 10); 1633 if (*ep != '\0' || i < 0) { 1634 if (!silent) 1635 (void) fprintf(el->el_errfile, 1636 "echotc: Bad value `%ls' for rows.\n", 1637 *argv); 1638 return -1; 1639 } 1640 arg_rows = (int) i; 1641 if (*ep != '\0') { 1642 if (!silent) 1643 (void) fprintf(el->el_errfile, 1644 "echotc: Bad value `%ls'.\n", *argv); 1645 return -1; 1646 } 1647 argv++; 1648 if (*argv && *argv[0]) { 1649 if (!silent) 1650 (void) fprintf(el->el_errfile, 1651 "echotc: Warning: Extra argument `%ls" 1652 "'.\n", *argv); 1653 return -1; 1654 } 1655 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows); 1656 break; 1657 } 1658 return 0; 1659 } 1660