1 /* $NetBSD: terminal.c,v 1.39 2019/07/23 10:18:52 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 1.39 2019/07/23 10:18:52 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, &el->el_display[ 592 el->el_cursor.v][el->el_cursor.h], 593 (size_t)(where - el->el_cursor.h)); 594 595 } 596 } else { /* del < 0 := moving backward */ 597 if ((-del > 4) && GoodStr(T_LE)) 598 terminal_tputs(el, tgoto(Str(T_LE), -del, -del), 599 -del); 600 else { /* can't go directly there */ 601 /* 602 * if the "cost" is greater than the "cost" 603 * from col 0 604 */ 605 if (EL_CAN_TAB ? 606 ((unsigned int)-del > 607 (((unsigned int) where >> 3) + 608 (where & 07))) 609 : (-del > where)) { 610 terminal__putc(el, '\r');/* do a CR */ 611 el->el_cursor.h = 0; 612 goto mc_again; /* and try again */ 613 } 614 for (i = 0; i < -del; i++) 615 terminal__putc(el, '\b'); 616 } 617 } 618 } 619 el->el_cursor.h = where; /* now where is here */ 620 } 621 622 623 /* terminal_overwrite(): 624 * Overstrike num characters 625 * Assumes MB_FILL_CHARs are present to keep the column count correct 626 */ 627 libedit_private void 628 terminal_overwrite(EditLine *el, const wchar_t *cp, size_t n) 629 { 630 if (n == 0) 631 return; 632 633 if (n > (size_t)el->el_terminal.t_size.h) { 634 #ifdef DEBUG_SCREEN 635 (void) fprintf(el->el_errfile, 636 "%s: n is ridiculous: %zu\r\n", __func__, n); 637 #endif /* DEBUG_SCREEN */ 638 return; 639 } 640 641 do { 642 /* terminal__putc() ignores any MB_FILL_CHARs */ 643 terminal__putc(el, *cp++); 644 el->el_cursor.h++; 645 } while (--n); 646 647 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */ 648 if (EL_HAS_AUTO_MARGINS) { /* yes */ 649 el->el_cursor.h = 0; 650 el->el_cursor.v++; 651 if (EL_HAS_MAGIC_MARGINS) { 652 /* force the wrap to avoid the "magic" 653 * situation */ 654 wchar_t c; 655 if ((c = el->el_display[el->el_cursor.v] 656 [el->el_cursor.h]) != '\0') { 657 terminal_overwrite(el, &c, (size_t)1); 658 while (el->el_display[el->el_cursor.v] 659 [el->el_cursor.h] == MB_FILL_CHAR) 660 el->el_cursor.h++; 661 } else { 662 terminal__putc(el, ' '); 663 el->el_cursor.h = 1; 664 } 665 } 666 } else /* no wrap, but cursor stays on screen */ 667 el->el_cursor.h = el->el_terminal.t_size.h - 1; 668 } 669 } 670 671 672 /* terminal_deletechars(): 673 * Delete num characters 674 */ 675 libedit_private void 676 terminal_deletechars(EditLine *el, int num) 677 { 678 if (num <= 0) 679 return; 680 681 if (!EL_CAN_DELETE) { 682 #ifdef DEBUG_EDIT 683 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n"); 684 #endif /* DEBUG_EDIT */ 685 return; 686 } 687 if (num > el->el_terminal.t_size.h) { 688 #ifdef DEBUG_SCREEN 689 (void) fprintf(el->el_errfile, 690 "%s: num is ridiculous: %d\r\n", __func__, num); 691 #endif /* DEBUG_SCREEN */ 692 return; 693 } 694 if (GoodStr(T_DC)) /* if I have multiple delete */ 695 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more 696 * expen. */ 697 terminal_tputs(el, tgoto(Str(T_DC), num, num), num); 698 return; 699 } 700 if (GoodStr(T_dm)) /* if I have delete mode */ 701 terminal_tputs(el, Str(T_dm), 1); 702 703 if (GoodStr(T_dc)) /* else do one at a time */ 704 while (num--) 705 terminal_tputs(el, Str(T_dc), 1); 706 707 if (GoodStr(T_ed)) /* if I have delete mode */ 708 terminal_tputs(el, Str(T_ed), 1); 709 } 710 711 712 /* terminal_insertwrite(): 713 * Puts terminal in insert character mode or inserts num 714 * characters in the line 715 * Assumes MB_FILL_CHARs are present to keep column count correct 716 */ 717 libedit_private void 718 terminal_insertwrite(EditLine *el, wchar_t *cp, int num) 719 { 720 if (num <= 0) 721 return; 722 if (!EL_CAN_INSERT) { 723 #ifdef DEBUG_EDIT 724 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n"); 725 #endif /* DEBUG_EDIT */ 726 return; 727 } 728 if (num > el->el_terminal.t_size.h) { 729 #ifdef DEBUG_SCREEN 730 (void) fprintf(el->el_errfile, 731 "%s: num is ridiculous: %d\r\n", __func__, num); 732 #endif /* DEBUG_SCREEN */ 733 return; 734 } 735 if (GoodStr(T_IC)) /* if I have multiple insert */ 736 if ((num > 1) || !GoodStr(T_ic)) { 737 /* if ic would be more expensive */ 738 terminal_tputs(el, tgoto(Str(T_IC), num, num), num); 739 terminal_overwrite(el, cp, (size_t)num); 740 /* this updates el_cursor.h */ 741 return; 742 } 743 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */ 744 terminal_tputs(el, Str(T_im), 1); 745 746 el->el_cursor.h += num; 747 do 748 terminal__putc(el, *cp++); 749 while (--num); 750 751 if (GoodStr(T_ip)) /* have to make num chars insert */ 752 terminal_tputs(el, Str(T_ip), 1); 753 754 terminal_tputs(el, Str(T_ei), 1); 755 return; 756 } 757 do { 758 if (GoodStr(T_ic)) /* have to make num chars insert */ 759 terminal_tputs(el, Str(T_ic), 1); 760 761 terminal__putc(el, *cp++); 762 763 el->el_cursor.h++; 764 765 if (GoodStr(T_ip)) /* have to make num chars insert */ 766 terminal_tputs(el, Str(T_ip), 1); 767 /* pad the inserted char */ 768 769 } while (--num); 770 } 771 772 773 /* terminal_clear_EOL(): 774 * clear to end of line. There are num characters to clear 775 */ 776 libedit_private void 777 terminal_clear_EOL(EditLine *el, int num) 778 { 779 int i; 780 781 if (EL_CAN_CEOL && GoodStr(T_ce)) 782 terminal_tputs(el, Str(T_ce), 1); 783 else { 784 for (i = 0; i < num; i++) 785 terminal__putc(el, ' '); 786 el->el_cursor.h += num; /* have written num spaces */ 787 } 788 } 789 790 791 /* terminal_clear_screen(): 792 * Clear the screen 793 */ 794 libedit_private void 795 terminal_clear_screen(EditLine *el) 796 { /* clear the whole screen and home */ 797 798 if (GoodStr(T_cl)) 799 /* send the clear screen code */ 800 terminal_tputs(el, Str(T_cl), Val(T_li)); 801 else if (GoodStr(T_ho) && GoodStr(T_cd)) { 802 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */ 803 /* clear to bottom of screen */ 804 terminal_tputs(el, Str(T_cd), Val(T_li)); 805 } else { 806 terminal__putc(el, '\r'); 807 terminal__putc(el, '\n'); 808 } 809 } 810 811 812 /* terminal_beep(): 813 * Beep the way the terminal wants us 814 */ 815 libedit_private void 816 terminal_beep(EditLine *el) 817 { 818 if (GoodStr(T_bl)) 819 /* what termcap says we should use */ 820 terminal_tputs(el, Str(T_bl), 1); 821 else 822 terminal__putc(el, '\007'); /* an ASCII bell; ^G */ 823 } 824 825 826 libedit_private void 827 terminal_get(EditLine *el, const char **term) 828 { 829 *term = el->el_terminal.t_name; 830 } 831 832 833 /* terminal_set(): 834 * Read in the terminal capabilities from the requested terminal 835 */ 836 libedit_private int 837 terminal_set(EditLine *el, const char *term) 838 { 839 int i; 840 char buf[TC_BUFSIZE]; 841 char *area; 842 const struct termcapstr *t; 843 sigset_t oset, nset; 844 int lins, cols; 845 846 (void) sigemptyset(&nset); 847 (void) sigaddset(&nset, SIGWINCH); 848 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 849 850 area = buf; 851 852 853 if (term == NULL) 854 term = getenv("TERM"); 855 856 if (!term || !term[0]) 857 term = "dumb"; 858 859 if (strcmp(term, "emacs") == 0) 860 el->el_flags |= EDIT_DISABLED; 861 862 (void) memset(el->el_terminal.t_cap, 0, TC_BUFSIZE); 863 864 i = tgetent(el->el_terminal.t_cap, term); 865 866 if (i <= 0) { 867 if (i == -1) 868 (void) fprintf(el->el_errfile, 869 "Cannot read termcap database;\n"); 870 else if (i == 0) 871 (void) fprintf(el->el_errfile, 872 "No entry for terminal type \"%s\";\n", term); 873 (void) fprintf(el->el_errfile, 874 "using dumb terminal settings.\n"); 875 Val(T_co) = 80; /* do a dumb terminal */ 876 Val(T_pt) = Val(T_km) = Val(T_li) = 0; 877 Val(T_xt) = Val(T_MT); 878 for (t = tstr; t->name != NULL; t++) 879 terminal_alloc(el, t, NULL); 880 } else { 881 /* auto/magic margins */ 882 Val(T_am) = tgetflag("am"); 883 Val(T_xn) = tgetflag("xn"); 884 /* Can we tab */ 885 Val(T_pt) = tgetflag("pt"); 886 Val(T_xt) = tgetflag("xt"); 887 /* do we have a meta? */ 888 Val(T_km) = tgetflag("km"); 889 Val(T_MT) = tgetflag("MT"); 890 /* Get the size */ 891 Val(T_co) = tgetnum("co"); 892 Val(T_li) = tgetnum("li"); 893 for (t = tstr; t->name != NULL; t++) { 894 /* XXX: some systems' tgetstr needs non const */ 895 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name), 896 &area)); 897 } 898 } 899 900 if (Val(T_co) < 2) 901 Val(T_co) = 80; /* just in case */ 902 if (Val(T_li) < 1) 903 Val(T_li) = 24; 904 905 el->el_terminal.t_size.v = Val(T_co); 906 el->el_terminal.t_size.h = Val(T_li); 907 908 terminal_setflags(el); 909 910 /* get the correct window size */ 911 (void) terminal_get_size(el, &lins, &cols); 912 if (terminal_change_size(el, lins, cols) == -1) 913 return -1; 914 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 915 terminal_bind_arrow(el); 916 el->el_terminal.t_name = term; 917 return i <= 0 ? -1 : 0; 918 } 919 920 921 /* terminal_get_size(): 922 * Return the new window size in lines and cols, and 923 * true if the size was changed. 924 */ 925 libedit_private int 926 terminal_get_size(EditLine *el, int *lins, int *cols) 927 { 928 929 *cols = Val(T_co); 930 *lins = Val(T_li); 931 932 #ifdef TIOCGWINSZ 933 { 934 struct winsize ws; 935 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) { 936 if (ws.ws_col) 937 *cols = ws.ws_col; 938 if (ws.ws_row) 939 *lins = ws.ws_row; 940 } 941 } 942 #endif 943 #ifdef TIOCGSIZE 944 { 945 struct ttysize ts; 946 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) { 947 if (ts.ts_cols) 948 *cols = ts.ts_cols; 949 if (ts.ts_lines) 950 *lins = ts.ts_lines; 951 } 952 } 953 #endif 954 return Val(T_co) != *cols || Val(T_li) != *lins; 955 } 956 957 958 /* terminal_change_size(): 959 * Change the size of the terminal 960 */ 961 libedit_private int 962 terminal_change_size(EditLine *el, int lins, int cols) 963 { 964 coord_t cur = el->el_cursor; 965 /* 966 * Just in case 967 */ 968 Val(T_co) = (cols < 2) ? 80 : cols; 969 Val(T_li) = (lins < 1) ? 24 : lins; 970 971 /* re-make display buffers */ 972 if (terminal_rebuffer_display(el) == -1) 973 return -1; 974 re_clear_display(el); 975 el->el_cursor = cur; 976 return 0; 977 } 978 979 980 /* terminal_init_arrow(): 981 * Initialize the arrow key bindings from termcap 982 */ 983 static void 984 terminal_init_arrow(EditLine *el) 985 { 986 funckey_t *arrow = el->el_terminal.t_fkey; 987 988 arrow[A_K_DN].name = L"down"; 989 arrow[A_K_DN].key = T_kd; 990 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY; 991 arrow[A_K_DN].type = XK_CMD; 992 993 arrow[A_K_UP].name = L"up"; 994 arrow[A_K_UP].key = T_ku; 995 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY; 996 arrow[A_K_UP].type = XK_CMD; 997 998 arrow[A_K_LT].name = L"left"; 999 arrow[A_K_LT].key = T_kl; 1000 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR; 1001 arrow[A_K_LT].type = XK_CMD; 1002 1003 arrow[A_K_RT].name = L"right"; 1004 arrow[A_K_RT].key = T_kr; 1005 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR; 1006 arrow[A_K_RT].type = XK_CMD; 1007 1008 arrow[A_K_HO].name = L"home"; 1009 arrow[A_K_HO].key = T_kh; 1010 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG; 1011 arrow[A_K_HO].type = XK_CMD; 1012 1013 arrow[A_K_EN].name = L"end"; 1014 arrow[A_K_EN].key = T_at7; 1015 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END; 1016 arrow[A_K_EN].type = XK_CMD; 1017 1018 arrow[A_K_DE].name = L"delete"; 1019 arrow[A_K_DE].key = T_kD; 1020 arrow[A_K_DE].fun.cmd = ED_DELETE_NEXT_CHAR; 1021 arrow[A_K_DE].type = XK_CMD; 1022 } 1023 1024 1025 /* terminal_reset_arrow(): 1026 * Reset arrow key bindings 1027 */ 1028 static void 1029 terminal_reset_arrow(EditLine *el) 1030 { 1031 funckey_t *arrow = el->el_terminal.t_fkey; 1032 static const wchar_t strA[] = L"\033[A"; 1033 static const wchar_t strB[] = L"\033[B"; 1034 static const wchar_t strC[] = L"\033[C"; 1035 static const wchar_t strD[] = L"\033[D"; 1036 static const wchar_t strH[] = L"\033[H"; 1037 static const wchar_t strF[] = L"\033[F"; 1038 static const wchar_t stOA[] = L"\033OA"; 1039 static const wchar_t stOB[] = L"\033OB"; 1040 static const wchar_t stOC[] = L"\033OC"; 1041 static const wchar_t stOD[] = L"\033OD"; 1042 static const wchar_t stOH[] = L"\033OH"; 1043 static const wchar_t stOF[] = L"\033OF"; 1044 1045 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1046 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1047 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1048 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1049 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1050 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1051 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1052 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1053 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1054 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1055 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1056 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1057 1058 if (el->el_map.type != MAP_VI) 1059 return; 1060 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1061 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1062 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1063 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1064 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1065 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1066 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1067 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1068 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1069 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1070 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1071 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1072 } 1073 1074 1075 /* terminal_set_arrow(): 1076 * Set an arrow key binding 1077 */ 1078 libedit_private int 1079 terminal_set_arrow(EditLine *el, const wchar_t *name, keymacro_value_t *fun, 1080 int type) 1081 { 1082 funckey_t *arrow = el->el_terminal.t_fkey; 1083 int i; 1084 1085 for (i = 0; i < A_K_NKEYS; i++) 1086 if (wcscmp(name, arrow[i].name) == 0) { 1087 arrow[i].fun = *fun; 1088 arrow[i].type = type; 1089 return 0; 1090 } 1091 return -1; 1092 } 1093 1094 1095 /* terminal_clear_arrow(): 1096 * Clear an arrow key binding 1097 */ 1098 libedit_private int 1099 terminal_clear_arrow(EditLine *el, const wchar_t *name) 1100 { 1101 funckey_t *arrow = el->el_terminal.t_fkey; 1102 int i; 1103 1104 for (i = 0; i < A_K_NKEYS; i++) 1105 if (wcscmp(name, arrow[i].name) == 0) { 1106 arrow[i].type = XK_NOD; 1107 return 0; 1108 } 1109 return -1; 1110 } 1111 1112 1113 /* terminal_print_arrow(): 1114 * Print the arrow key bindings 1115 */ 1116 libedit_private void 1117 terminal_print_arrow(EditLine *el, const wchar_t *name) 1118 { 1119 int i; 1120 funckey_t *arrow = el->el_terminal.t_fkey; 1121 1122 for (i = 0; i < A_K_NKEYS; i++) 1123 if (*name == '\0' || wcscmp(name, arrow[i].name) == 0) 1124 if (arrow[i].type != XK_NOD) 1125 keymacro_kprint(el, arrow[i].name, 1126 &arrow[i].fun, arrow[i].type); 1127 } 1128 1129 1130 /* terminal_bind_arrow(): 1131 * Bind the arrow keys 1132 */ 1133 libedit_private void 1134 terminal_bind_arrow(EditLine *el) 1135 { 1136 el_action_t *map; 1137 const el_action_t *dmap; 1138 int i, j; 1139 char *p; 1140 funckey_t *arrow = el->el_terminal.t_fkey; 1141 1142 /* Check if the components needed are initialized */ 1143 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL) 1144 return; 1145 1146 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key; 1147 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs; 1148 1149 terminal_reset_arrow(el); 1150 1151 for (i = 0; i < A_K_NKEYS; i++) { 1152 wchar_t wt_str[VISUAL_WIDTH_MAX]; 1153 wchar_t *px; 1154 size_t n; 1155 1156 p = el->el_terminal.t_str[arrow[i].key]; 1157 if (!p || !*p) 1158 continue; 1159 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n) 1160 wt_str[n] = p[n]; 1161 while (n < VISUAL_WIDTH_MAX) 1162 wt_str[n++] = '\0'; 1163 px = wt_str; 1164 j = (unsigned char) *p; 1165 /* 1166 * Assign the arrow keys only if: 1167 * 1168 * 1. They are multi-character arrow keys and the user 1169 * has not re-assigned the leading character, or 1170 * has re-assigned the leading character to be 1171 * ED_SEQUENCE_LEAD_IN 1172 * 2. They are single arrow keys pointing to an 1173 * unassigned key. 1174 */ 1175 if (arrow[i].type == XK_NOD) 1176 keymacro_clear(el, map, px); 1177 else { 1178 if (p[1] && (dmap[j] == map[j] || 1179 map[j] == ED_SEQUENCE_LEAD_IN)) { 1180 keymacro_add(el, px, &arrow[i].fun, 1181 arrow[i].type); 1182 map[j] = ED_SEQUENCE_LEAD_IN; 1183 } else if (map[j] == ED_UNASSIGNED) { 1184 keymacro_clear(el, map, px); 1185 if (arrow[i].type == XK_CMD) 1186 map[j] = arrow[i].fun.cmd; 1187 else 1188 keymacro_add(el, px, &arrow[i].fun, 1189 arrow[i].type); 1190 } 1191 } 1192 } 1193 } 1194 1195 /* terminal_putc(): 1196 * Add a character 1197 */ 1198 static int 1199 terminal_putc(int c) 1200 { 1201 if (terminal_outfile == NULL) 1202 return -1; 1203 return fputc(c, terminal_outfile); 1204 } 1205 1206 static void 1207 terminal_tputs(EditLine *el, const char *cap, int affcnt) 1208 { 1209 #ifdef _REENTRANT 1210 pthread_mutex_lock(&terminal_mutex); 1211 #endif 1212 terminal_outfile = el->el_outfile; 1213 (void)tputs(cap, affcnt, terminal_putc); 1214 #ifdef _REENTRANT 1215 pthread_mutex_unlock(&terminal_mutex); 1216 #endif 1217 } 1218 1219 /* terminal__putc(): 1220 * Add a character 1221 */ 1222 libedit_private int 1223 terminal__putc(EditLine *el, wint_t c) 1224 { 1225 char buf[MB_LEN_MAX +1]; 1226 ssize_t i; 1227 if (c == MB_FILL_CHAR) 1228 return 0; 1229 if (c & EL_LITERAL) 1230 return fputs(literal_get(el, c), el->el_outfile); 1231 i = ct_encode_char(buf, (size_t)MB_LEN_MAX, c); 1232 if (i <= 0) 1233 return (int)i; 1234 buf[i] = '\0'; 1235 return fputs(buf, el->el_outfile); 1236 } 1237 1238 /* terminal__flush(): 1239 * Flush output 1240 */ 1241 libedit_private void 1242 terminal__flush(EditLine *el) 1243 { 1244 1245 (void) fflush(el->el_outfile); 1246 } 1247 1248 /* terminal_writec(): 1249 * Write the given character out, in a human readable form 1250 */ 1251 libedit_private void 1252 terminal_writec(EditLine *el, wint_t c) 1253 { 1254 wchar_t visbuf[VISUAL_WIDTH_MAX +1]; 1255 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c); 1256 if (vcnt < 0) 1257 vcnt = 0; 1258 visbuf[vcnt] = '\0'; 1259 terminal_overwrite(el, visbuf, (size_t)vcnt); 1260 terminal__flush(el); 1261 } 1262 1263 1264 /* terminal_telltc(): 1265 * Print the current termcap characteristics 1266 */ 1267 libedit_private int 1268 /*ARGSUSED*/ 1269 terminal_telltc(EditLine *el, int argc __attribute__((__unused__)), 1270 const wchar_t **argv __attribute__((__unused__))) 1271 { 1272 const struct termcapstr *t; 1273 char **ts; 1274 1275 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n"); 1276 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n"); 1277 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n", 1278 Val(T_co), Val(T_li)); 1279 (void) fprintf(el->el_outfile, 1280 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no"); 1281 (void) fprintf(el->el_outfile, 1282 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not "); 1283 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n", 1284 EL_HAS_AUTO_MARGINS ? "has" : "does not have"); 1285 if (EL_HAS_AUTO_MARGINS) 1286 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n", 1287 EL_HAS_MAGIC_MARGINS ? "has" : "does not have"); 1288 1289 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) { 1290 const char *ub; 1291 if (*ts && **ts) { 1292 ub = ct_encode_string(ct_visual_string( 1293 ct_decode_string(*ts, &el->el_scratch), 1294 &el->el_visual), &el->el_scratch); 1295 } else { 1296 ub = "(empty)"; 1297 } 1298 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n", 1299 t->long_name, t->name, ub); 1300 } 1301 (void) fputc('\n', el->el_outfile); 1302 return 0; 1303 } 1304 1305 1306 /* terminal_settc(): 1307 * Change the current terminal characteristics 1308 */ 1309 libedit_private int 1310 /*ARGSUSED*/ 1311 terminal_settc(EditLine *el, int argc __attribute__((__unused__)), 1312 const wchar_t **argv) 1313 { 1314 const struct termcapstr *ts; 1315 const struct termcapval *tv; 1316 char what[8], how[8]; 1317 1318 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1319 return -1; 1320 1321 strncpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what)); 1322 what[sizeof(what) - 1] = '\0'; 1323 strncpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how)); 1324 how[sizeof(how) - 1] = '\0'; 1325 1326 /* 1327 * Do the strings first 1328 */ 1329 for (ts = tstr; ts->name != NULL; ts++) 1330 if (strcmp(ts->name, what) == 0) 1331 break; 1332 1333 if (ts->name != NULL) { 1334 terminal_alloc(el, ts, how); 1335 terminal_setflags(el); 1336 return 0; 1337 } 1338 /* 1339 * Do the numeric ones second 1340 */ 1341 for (tv = tval; tv->name != NULL; tv++) 1342 if (strcmp(tv->name, what) == 0) 1343 break; 1344 1345 if (tv->name != NULL) 1346 return -1; 1347 1348 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1349 tv == &tval[T_am] || tv == &tval[T_xn]) { 1350 if (strcmp(how, "yes") == 0) 1351 el->el_terminal.t_val[tv - tval] = 1; 1352 else if (strcmp(how, "no") == 0) 1353 el->el_terminal.t_val[tv - tval] = 0; 1354 else { 1355 (void) fprintf(el->el_errfile, 1356 "%ls: Bad value `%s'.\n", argv[0], how); 1357 return -1; 1358 } 1359 terminal_setflags(el); 1360 if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1) 1361 return -1; 1362 return 0; 1363 } else { 1364 long i; 1365 char *ep; 1366 1367 i = strtol(how, &ep, 10); 1368 if (*ep != '\0') { 1369 (void) fprintf(el->el_errfile, 1370 "%ls: Bad value `%s'.\n", argv[0], how); 1371 return -1; 1372 } 1373 el->el_terminal.t_val[tv - tval] = (int) i; 1374 el->el_terminal.t_size.v = Val(T_co); 1375 el->el_terminal.t_size.h = Val(T_li); 1376 if (tv == &tval[T_co] || tv == &tval[T_li]) 1377 if (terminal_change_size(el, Val(T_li), Val(T_co)) 1378 == -1) 1379 return -1; 1380 return 0; 1381 } 1382 } 1383 1384 1385 /* terminal_gettc(): 1386 * Get the current terminal characteristics 1387 */ 1388 libedit_private int 1389 /*ARGSUSED*/ 1390 terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv) 1391 { 1392 const struct termcapstr *ts; 1393 const struct termcapval *tv; 1394 char *what; 1395 void *how; 1396 1397 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1398 return -1; 1399 1400 what = argv[1]; 1401 how = argv[2]; 1402 1403 /* 1404 * Do the strings first 1405 */ 1406 for (ts = tstr; ts->name != NULL; ts++) 1407 if (strcmp(ts->name, what) == 0) 1408 break; 1409 1410 if (ts->name != NULL) { 1411 *(char **)how = el->el_terminal.t_str[ts - tstr]; 1412 return 0; 1413 } 1414 /* 1415 * Do the numeric ones second 1416 */ 1417 for (tv = tval; tv->name != NULL; tv++) 1418 if (strcmp(tv->name, what) == 0) 1419 break; 1420 1421 if (tv->name == NULL) 1422 return -1; 1423 1424 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1425 tv == &tval[T_am] || tv == &tval[T_xn]) { 1426 static char yes[] = "yes"; 1427 static char no[] = "no"; 1428 if (el->el_terminal.t_val[tv - tval]) 1429 *(char **)how = yes; 1430 else 1431 *(char **)how = no; 1432 return 0; 1433 } else { 1434 *(int *)how = el->el_terminal.t_val[tv - tval]; 1435 return 0; 1436 } 1437 } 1438 1439 /* terminal_echotc(): 1440 * Print the termcap string out with variable substitution 1441 */ 1442 libedit_private int 1443 /*ARGSUSED*/ 1444 terminal_echotc(EditLine *el, int argc __attribute__((__unused__)), 1445 const wchar_t **argv) 1446 { 1447 char *cap, *scap; 1448 wchar_t *ep; 1449 int arg_need, arg_cols, arg_rows; 1450 int verbose = 0, silent = 0; 1451 char *area; 1452 static const char fmts[] = "%s\n", fmtd[] = "%d\n"; 1453 const struct termcapstr *t; 1454 char buf[TC_BUFSIZE]; 1455 long i; 1456 1457 area = buf; 1458 1459 if (argv == NULL || argv[1] == NULL) 1460 return -1; 1461 argv++; 1462 1463 if (argv[0][0] == '-') { 1464 switch (argv[0][1]) { 1465 case 'v': 1466 verbose = 1; 1467 break; 1468 case 's': 1469 silent = 1; 1470 break; 1471 default: 1472 /* stderror(ERR_NAME | ERR_TCUSAGE); */ 1473 break; 1474 } 1475 argv++; 1476 } 1477 if (!*argv || *argv[0] == '\0') 1478 return 0; 1479 if (wcscmp(*argv, L"tabs") == 0) { 1480 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no"); 1481 return 0; 1482 } else if (wcscmp(*argv, L"meta") == 0) { 1483 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no"); 1484 return 0; 1485 } else if (wcscmp(*argv, L"xn") == 0) { 1486 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ? 1487 "yes" : "no"); 1488 return 0; 1489 } else if (wcscmp(*argv, L"am") == 0) { 1490 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ? 1491 "yes" : "no"); 1492 return 0; 1493 } else if (wcscmp(*argv, L"baud") == 0) { 1494 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed); 1495 return 0; 1496 } else if (wcscmp(*argv, L"rows") == 0 || 1497 wcscmp(*argv, L"lines") == 0) { 1498 (void) fprintf(el->el_outfile, fmtd, Val(T_li)); 1499 return 0; 1500 } else if (wcscmp(*argv, L"cols") == 0) { 1501 (void) fprintf(el->el_outfile, fmtd, Val(T_co)); 1502 return 0; 1503 } 1504 /* 1505 * Try to use our local definition first 1506 */ 1507 scap = NULL; 1508 for (t = tstr; t->name != NULL; t++) 1509 if (strcmp(t->name, 1510 ct_encode_string(*argv, &el->el_scratch)) == 0) { 1511 scap = el->el_terminal.t_str[t - tstr]; 1512 break; 1513 } 1514 if (t->name == NULL) { 1515 /* XXX: some systems' tgetstr needs non const */ 1516 scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area); 1517 } 1518 if (!scap || scap[0] == '\0') { 1519 if (!silent) 1520 (void) fprintf(el->el_errfile, 1521 "echotc: Termcap parameter `%ls' not found.\n", 1522 *argv); 1523 return -1; 1524 } 1525 /* 1526 * Count home many values we need for this capability. 1527 */ 1528 for (cap = scap, arg_need = 0; *cap; cap++) 1529 if (*cap == '%') 1530 switch (*++cap) { 1531 case 'd': 1532 case '2': 1533 case '3': 1534 case '.': 1535 case '+': 1536 arg_need++; 1537 break; 1538 case '%': 1539 case '>': 1540 case 'i': 1541 case 'r': 1542 case 'n': 1543 case 'B': 1544 case 'D': 1545 break; 1546 default: 1547 /* 1548 * hpux has lot's of them... 1549 */ 1550 if (verbose) 1551 (void) fprintf(el->el_errfile, 1552 "echotc: Warning: unknown termcap %% `%c'.\n", 1553 *cap); 1554 /* This is bad, but I won't complain */ 1555 break; 1556 } 1557 1558 switch (arg_need) { 1559 case 0: 1560 argv++; 1561 if (*argv && *argv[0]) { 1562 if (!silent) 1563 (void) fprintf(el->el_errfile, 1564 "echotc: Warning: Extra argument `%ls'.\n", 1565 *argv); 1566 return -1; 1567 } 1568 terminal_tputs(el, scap, 1); 1569 break; 1570 case 1: 1571 argv++; 1572 if (!*argv || *argv[0] == '\0') { 1573 if (!silent) 1574 (void) fprintf(el->el_errfile, 1575 "echotc: Warning: Missing argument.\n"); 1576 return -1; 1577 } 1578 arg_cols = 0; 1579 i = wcstol(*argv, &ep, 10); 1580 if (*ep != '\0' || i < 0) { 1581 if (!silent) 1582 (void) fprintf(el->el_errfile, 1583 "echotc: Bad value `%ls' for rows.\n", 1584 *argv); 1585 return -1; 1586 } 1587 arg_rows = (int) i; 1588 argv++; 1589 if (*argv && *argv[0]) { 1590 if (!silent) 1591 (void) fprintf(el->el_errfile, 1592 "echotc: Warning: Extra argument `%ls" 1593 "'.\n", *argv); 1594 return -1; 1595 } 1596 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1); 1597 break; 1598 default: 1599 /* This is wrong, but I will ignore it... */ 1600 if (verbose) 1601 (void) fprintf(el->el_errfile, 1602 "echotc: Warning: Too many required arguments (%d).\n", 1603 arg_need); 1604 /* FALLTHROUGH */ 1605 case 2: 1606 argv++; 1607 if (!*argv || *argv[0] == '\0') { 1608 if (!silent) 1609 (void) fprintf(el->el_errfile, 1610 "echotc: Warning: Missing argument.\n"); 1611 return -1; 1612 } 1613 i = wcstol(*argv, &ep, 10); 1614 if (*ep != '\0' || i < 0) { 1615 if (!silent) 1616 (void) fprintf(el->el_errfile, 1617 "echotc: Bad value `%ls' for cols.\n", 1618 *argv); 1619 return -1; 1620 } 1621 arg_cols = (int) i; 1622 argv++; 1623 if (!*argv || *argv[0] == '\0') { 1624 if (!silent) 1625 (void) fprintf(el->el_errfile, 1626 "echotc: Warning: Missing argument.\n"); 1627 return -1; 1628 } 1629 i = wcstol(*argv, &ep, 10); 1630 if (*ep != '\0' || i < 0) { 1631 if (!silent) 1632 (void) fprintf(el->el_errfile, 1633 "echotc: Bad value `%ls' for rows.\n", 1634 *argv); 1635 return -1; 1636 } 1637 arg_rows = (int) i; 1638 if (*ep != '\0') { 1639 if (!silent) 1640 (void) fprintf(el->el_errfile, 1641 "echotc: Bad value `%ls'.\n", *argv); 1642 return -1; 1643 } 1644 argv++; 1645 if (*argv && *argv[0]) { 1646 if (!silent) 1647 (void) fprintf(el->el_errfile, 1648 "echotc: Warning: Extra argument `%ls" 1649 "'.\n", *argv); 1650 return -1; 1651 } 1652 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows); 1653 break; 1654 } 1655 return 0; 1656 } 1657