1 /* $NetBSD: terminal.c,v 1.38 2019/06/30 13:30:15 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 1.38 2019/06/30 13:30:15 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 /* 513 * We don't use DO here because some terminals are buggy 514 * if the destination is beyond bottom of the screen. 515 */ 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 } else { /* del < 0 */ 521 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up))) 522 terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del); 523 else { 524 if (GoodStr(T_up)) 525 for (; del < 0; del++) 526 terminal_tputs(el, Str(T_up), 1); 527 } 528 } 529 el->el_cursor.v = where;/* now where is here */ 530 } 531 532 533 /* terminal_move_to_char(): 534 * Move to the character position specified 535 */ 536 libedit_private void 537 terminal_move_to_char(EditLine *el, int where) 538 { 539 int del, i; 540 541 mc_again: 542 if (where == el->el_cursor.h) 543 return; 544 545 if (where > el->el_terminal.t_size.h) { 546 #ifdef DEBUG_SCREEN 547 (void) fprintf(el->el_errfile, 548 "%s: where is ridiculous: %d\r\n", __func__, where); 549 #endif /* DEBUG_SCREEN */ 550 return; 551 } 552 if (!where) { /* if where is first column */ 553 terminal__putc(el, '\r'); /* do a CR */ 554 el->el_cursor.h = 0; 555 return; 556 } 557 del = where - el->el_cursor.h; 558 559 if ((del < -4 || del > 4) && GoodStr(T_ch)) 560 /* go there directly */ 561 terminal_tputs(el, tgoto(Str(T_ch), where, where), where); 562 else { 563 if (del > 0) { /* moving forward */ 564 if ((del > 4) && GoodStr(T_RI)) 565 terminal_tputs(el, tgoto(Str(T_RI), del, del), 566 del); 567 else { 568 /* if I can do tabs, use them */ 569 if (EL_CAN_TAB) { 570 if ((el->el_cursor.h & 0370) != 571 (where & ~0x7) 572 && (el->el_display[ 573 el->el_cursor.v][where & 0370] != 574 MB_FILL_CHAR) 575 ) { 576 /* if not within tab stop */ 577 for (i = 578 (el->el_cursor.h & 0370); 579 i < (where & ~0x7); 580 i += 8) 581 terminal__putc(el, 582 '\t'); 583 /* then tab over */ 584 el->el_cursor.h = where & ~0x7; 585 } 586 } 587 /* 588 * it's usually cheaper to just write the 589 * chars, so we do. 590 */ 591 /* 592 * NOTE THAT terminal_overwrite() WILL CHANGE 593 * el->el_cursor.h!!! 594 */ 595 terminal_overwrite(el, &el->el_display[ 596 el->el_cursor.v][el->el_cursor.h], 597 (size_t)(where - el->el_cursor.h)); 598 599 } 600 } else { /* del < 0 := moving backward */ 601 if ((-del > 4) && GoodStr(T_LE)) 602 terminal_tputs(el, tgoto(Str(T_LE), -del, -del), 603 -del); 604 else { /* can't go directly there */ 605 /* 606 * if the "cost" is greater than the "cost" 607 * from col 0 608 */ 609 if (EL_CAN_TAB ? 610 ((unsigned int)-del > 611 (((unsigned int) where >> 3) + 612 (where & 07))) 613 : (-del > where)) { 614 terminal__putc(el, '\r');/* do a CR */ 615 el->el_cursor.h = 0; 616 goto mc_again; /* and try again */ 617 } 618 for (i = 0; i < -del; i++) 619 terminal__putc(el, '\b'); 620 } 621 } 622 } 623 el->el_cursor.h = where; /* now where is here */ 624 } 625 626 627 /* terminal_overwrite(): 628 * Overstrike num characters 629 * Assumes MB_FILL_CHARs are present to keep the column count correct 630 */ 631 libedit_private void 632 terminal_overwrite(EditLine *el, const wchar_t *cp, size_t n) 633 { 634 if (n == 0) 635 return; 636 637 if (n > (size_t)el->el_terminal.t_size.h) { 638 #ifdef DEBUG_SCREEN 639 (void) fprintf(el->el_errfile, 640 "%s: n is ridiculous: %zu\r\n", __func__, n); 641 #endif /* DEBUG_SCREEN */ 642 return; 643 } 644 645 do { 646 /* terminal__putc() ignores any MB_FILL_CHARs */ 647 terminal__putc(el, *cp++); 648 el->el_cursor.h++; 649 } while (--n); 650 651 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */ 652 if (EL_HAS_AUTO_MARGINS) { /* yes */ 653 el->el_cursor.h = 0; 654 el->el_cursor.v++; 655 if (EL_HAS_MAGIC_MARGINS) { 656 /* force the wrap to avoid the "magic" 657 * situation */ 658 wchar_t c; 659 if ((c = el->el_display[el->el_cursor.v] 660 [el->el_cursor.h]) != '\0') { 661 terminal_overwrite(el, &c, (size_t)1); 662 while (el->el_display[el->el_cursor.v] 663 [el->el_cursor.h] == MB_FILL_CHAR) 664 el->el_cursor.h++; 665 } else { 666 terminal__putc(el, ' '); 667 el->el_cursor.h = 1; 668 } 669 } 670 } else /* no wrap, but cursor stays on screen */ 671 el->el_cursor.h = el->el_terminal.t_size.h - 1; 672 } 673 } 674 675 676 /* terminal_deletechars(): 677 * Delete num characters 678 */ 679 libedit_private void 680 terminal_deletechars(EditLine *el, int num) 681 { 682 if (num <= 0) 683 return; 684 685 if (!EL_CAN_DELETE) { 686 #ifdef DEBUG_EDIT 687 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n"); 688 #endif /* DEBUG_EDIT */ 689 return; 690 } 691 if (num > el->el_terminal.t_size.h) { 692 #ifdef DEBUG_SCREEN 693 (void) fprintf(el->el_errfile, 694 "%s: num is ridiculous: %d\r\n", __func__, num); 695 #endif /* DEBUG_SCREEN */ 696 return; 697 } 698 if (GoodStr(T_DC)) /* if I have multiple delete */ 699 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more 700 * expen. */ 701 terminal_tputs(el, tgoto(Str(T_DC), num, num), num); 702 return; 703 } 704 if (GoodStr(T_dm)) /* if I have delete mode */ 705 terminal_tputs(el, Str(T_dm), 1); 706 707 if (GoodStr(T_dc)) /* else do one at a time */ 708 while (num--) 709 terminal_tputs(el, Str(T_dc), 1); 710 711 if (GoodStr(T_ed)) /* if I have delete mode */ 712 terminal_tputs(el, Str(T_ed), 1); 713 } 714 715 716 /* terminal_insertwrite(): 717 * Puts terminal in insert character mode or inserts num 718 * characters in the line 719 * Assumes MB_FILL_CHARs are present to keep column count correct 720 */ 721 libedit_private void 722 terminal_insertwrite(EditLine *el, wchar_t *cp, int num) 723 { 724 if (num <= 0) 725 return; 726 if (!EL_CAN_INSERT) { 727 #ifdef DEBUG_EDIT 728 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n"); 729 #endif /* DEBUG_EDIT */ 730 return; 731 } 732 if (num > el->el_terminal.t_size.h) { 733 #ifdef DEBUG_SCREEN 734 (void) fprintf(el->el_errfile, 735 "%s: num is ridiculous: %d\r\n", __func__, num); 736 #endif /* DEBUG_SCREEN */ 737 return; 738 } 739 if (GoodStr(T_IC)) /* if I have multiple insert */ 740 if ((num > 1) || !GoodStr(T_ic)) { 741 /* if ic would be more expensive */ 742 terminal_tputs(el, tgoto(Str(T_IC), num, num), num); 743 terminal_overwrite(el, cp, (size_t)num); 744 /* this updates el_cursor.h */ 745 return; 746 } 747 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */ 748 terminal_tputs(el, Str(T_im), 1); 749 750 el->el_cursor.h += num; 751 do 752 terminal__putc(el, *cp++); 753 while (--num); 754 755 if (GoodStr(T_ip)) /* have to make num chars insert */ 756 terminal_tputs(el, Str(T_ip), 1); 757 758 terminal_tputs(el, Str(T_ei), 1); 759 return; 760 } 761 do { 762 if (GoodStr(T_ic)) /* have to make num chars insert */ 763 terminal_tputs(el, Str(T_ic), 1); 764 765 terminal__putc(el, *cp++); 766 767 el->el_cursor.h++; 768 769 if (GoodStr(T_ip)) /* have to make num chars insert */ 770 terminal_tputs(el, Str(T_ip), 1); 771 /* pad the inserted char */ 772 773 } while (--num); 774 } 775 776 777 /* terminal_clear_EOL(): 778 * clear to end of line. There are num characters to clear 779 */ 780 libedit_private void 781 terminal_clear_EOL(EditLine *el, int num) 782 { 783 int i; 784 785 if (EL_CAN_CEOL && GoodStr(T_ce)) 786 terminal_tputs(el, Str(T_ce), 1); 787 else { 788 for (i = 0; i < num; i++) 789 terminal__putc(el, ' '); 790 el->el_cursor.h += num; /* have written num spaces */ 791 } 792 } 793 794 795 /* terminal_clear_screen(): 796 * Clear the screen 797 */ 798 libedit_private void 799 terminal_clear_screen(EditLine *el) 800 { /* clear the whole screen and home */ 801 802 if (GoodStr(T_cl)) 803 /* send the clear screen code */ 804 terminal_tputs(el, Str(T_cl), Val(T_li)); 805 else if (GoodStr(T_ho) && GoodStr(T_cd)) { 806 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */ 807 /* clear to bottom of screen */ 808 terminal_tputs(el, Str(T_cd), Val(T_li)); 809 } else { 810 terminal__putc(el, '\r'); 811 terminal__putc(el, '\n'); 812 } 813 } 814 815 816 /* terminal_beep(): 817 * Beep the way the terminal wants us 818 */ 819 libedit_private void 820 terminal_beep(EditLine *el) 821 { 822 if (GoodStr(T_bl)) 823 /* what termcap says we should use */ 824 terminal_tputs(el, Str(T_bl), 1); 825 else 826 terminal__putc(el, '\007'); /* an ASCII bell; ^G */ 827 } 828 829 830 libedit_private void 831 terminal_get(EditLine *el, const char **term) 832 { 833 *term = el->el_terminal.t_name; 834 } 835 836 837 /* terminal_set(): 838 * Read in the terminal capabilities from the requested terminal 839 */ 840 libedit_private int 841 terminal_set(EditLine *el, const char *term) 842 { 843 int i; 844 char buf[TC_BUFSIZE]; 845 char *area; 846 const struct termcapstr *t; 847 sigset_t oset, nset; 848 int lins, cols; 849 850 (void) sigemptyset(&nset); 851 (void) sigaddset(&nset, SIGWINCH); 852 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 853 854 area = buf; 855 856 857 if (term == NULL) 858 term = getenv("TERM"); 859 860 if (!term || !term[0]) 861 term = "dumb"; 862 863 if (strcmp(term, "emacs") == 0) 864 el->el_flags |= EDIT_DISABLED; 865 866 (void) memset(el->el_terminal.t_cap, 0, TC_BUFSIZE); 867 868 i = tgetent(el->el_terminal.t_cap, term); 869 870 if (i <= 0) { 871 if (i == -1) 872 (void) fprintf(el->el_errfile, 873 "Cannot read termcap database;\n"); 874 else if (i == 0) 875 (void) fprintf(el->el_errfile, 876 "No entry for terminal type \"%s\";\n", term); 877 (void) fprintf(el->el_errfile, 878 "using dumb terminal settings.\n"); 879 Val(T_co) = 80; /* do a dumb terminal */ 880 Val(T_pt) = Val(T_km) = Val(T_li) = 0; 881 Val(T_xt) = Val(T_MT); 882 for (t = tstr; t->name != NULL; t++) 883 terminal_alloc(el, t, NULL); 884 } else { 885 /* auto/magic margins */ 886 Val(T_am) = tgetflag("am"); 887 Val(T_xn) = tgetflag("xn"); 888 /* Can we tab */ 889 Val(T_pt) = tgetflag("pt"); 890 Val(T_xt) = tgetflag("xt"); 891 /* do we have a meta? */ 892 Val(T_km) = tgetflag("km"); 893 Val(T_MT) = tgetflag("MT"); 894 /* Get the size */ 895 Val(T_co) = tgetnum("co"); 896 Val(T_li) = tgetnum("li"); 897 for (t = tstr; t->name != NULL; t++) { 898 /* XXX: some systems' tgetstr needs non const */ 899 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name), 900 &area)); 901 } 902 } 903 904 if (Val(T_co) < 2) 905 Val(T_co) = 80; /* just in case */ 906 if (Val(T_li) < 1) 907 Val(T_li) = 24; 908 909 el->el_terminal.t_size.v = Val(T_co); 910 el->el_terminal.t_size.h = Val(T_li); 911 912 terminal_setflags(el); 913 914 /* get the correct window size */ 915 (void) terminal_get_size(el, &lins, &cols); 916 if (terminal_change_size(el, lins, cols) == -1) 917 return -1; 918 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 919 terminal_bind_arrow(el); 920 el->el_terminal.t_name = term; 921 return i <= 0 ? -1 : 0; 922 } 923 924 925 /* terminal_get_size(): 926 * Return the new window size in lines and cols, and 927 * true if the size was changed. 928 */ 929 libedit_private int 930 terminal_get_size(EditLine *el, int *lins, int *cols) 931 { 932 933 *cols = Val(T_co); 934 *lins = Val(T_li); 935 936 #ifdef TIOCGWINSZ 937 { 938 struct winsize ws; 939 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) { 940 if (ws.ws_col) 941 *cols = ws.ws_col; 942 if (ws.ws_row) 943 *lins = ws.ws_row; 944 } 945 } 946 #endif 947 #ifdef TIOCGSIZE 948 { 949 struct ttysize ts; 950 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) { 951 if (ts.ts_cols) 952 *cols = ts.ts_cols; 953 if (ts.ts_lines) 954 *lins = ts.ts_lines; 955 } 956 } 957 #endif 958 return Val(T_co) != *cols || Val(T_li) != *lins; 959 } 960 961 962 /* terminal_change_size(): 963 * Change the size of the terminal 964 */ 965 libedit_private int 966 terminal_change_size(EditLine *el, int lins, int cols) 967 { 968 coord_t cur = el->el_cursor; 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 el->el_cursor = cur; 980 return 0; 981 } 982 983 984 /* terminal_init_arrow(): 985 * Initialize the arrow key bindings from termcap 986 */ 987 static void 988 terminal_init_arrow(EditLine *el) 989 { 990 funckey_t *arrow = el->el_terminal.t_fkey; 991 992 arrow[A_K_DN].name = L"down"; 993 arrow[A_K_DN].key = T_kd; 994 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY; 995 arrow[A_K_DN].type = XK_CMD; 996 997 arrow[A_K_UP].name = L"up"; 998 arrow[A_K_UP].key = T_ku; 999 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY; 1000 arrow[A_K_UP].type = XK_CMD; 1001 1002 arrow[A_K_LT].name = L"left"; 1003 arrow[A_K_LT].key = T_kl; 1004 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR; 1005 arrow[A_K_LT].type = XK_CMD; 1006 1007 arrow[A_K_RT].name = L"right"; 1008 arrow[A_K_RT].key = T_kr; 1009 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR; 1010 arrow[A_K_RT].type = XK_CMD; 1011 1012 arrow[A_K_HO].name = L"home"; 1013 arrow[A_K_HO].key = T_kh; 1014 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG; 1015 arrow[A_K_HO].type = XK_CMD; 1016 1017 arrow[A_K_EN].name = L"end"; 1018 arrow[A_K_EN].key = T_at7; 1019 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END; 1020 arrow[A_K_EN].type = XK_CMD; 1021 1022 arrow[A_K_DE].name = L"delete"; 1023 arrow[A_K_DE].key = T_kD; 1024 arrow[A_K_DE].fun.cmd = ED_DELETE_NEXT_CHAR; 1025 arrow[A_K_DE].type = XK_CMD; 1026 } 1027 1028 1029 /* terminal_reset_arrow(): 1030 * Reset arrow key bindings 1031 */ 1032 static void 1033 terminal_reset_arrow(EditLine *el) 1034 { 1035 funckey_t *arrow = el->el_terminal.t_fkey; 1036 static const wchar_t strA[] = L"\033[A"; 1037 static const wchar_t strB[] = L"\033[B"; 1038 static const wchar_t strC[] = L"\033[C"; 1039 static const wchar_t strD[] = L"\033[D"; 1040 static const wchar_t strH[] = L"\033[H"; 1041 static const wchar_t strF[] = L"\033[F"; 1042 static const wchar_t stOA[] = L"\033OA"; 1043 static const wchar_t stOB[] = L"\033OB"; 1044 static const wchar_t stOC[] = L"\033OC"; 1045 static const wchar_t stOD[] = L"\033OD"; 1046 static const wchar_t stOH[] = L"\033OH"; 1047 static const wchar_t stOF[] = L"\033OF"; 1048 1049 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1050 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1051 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1052 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1053 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1054 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1055 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1056 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1057 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1058 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1059 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1060 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1061 1062 if (el->el_map.type != MAP_VI) 1063 return; 1064 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1065 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1066 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1067 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1068 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1069 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1070 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1071 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1072 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1073 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1074 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1075 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1076 } 1077 1078 1079 /* terminal_set_arrow(): 1080 * Set an arrow key binding 1081 */ 1082 libedit_private int 1083 terminal_set_arrow(EditLine *el, const wchar_t *name, keymacro_value_t *fun, 1084 int type) 1085 { 1086 funckey_t *arrow = el->el_terminal.t_fkey; 1087 int i; 1088 1089 for (i = 0; i < A_K_NKEYS; i++) 1090 if (wcscmp(name, arrow[i].name) == 0) { 1091 arrow[i].fun = *fun; 1092 arrow[i].type = type; 1093 return 0; 1094 } 1095 return -1; 1096 } 1097 1098 1099 /* terminal_clear_arrow(): 1100 * Clear an arrow key binding 1101 */ 1102 libedit_private int 1103 terminal_clear_arrow(EditLine *el, const wchar_t *name) 1104 { 1105 funckey_t *arrow = el->el_terminal.t_fkey; 1106 int i; 1107 1108 for (i = 0; i < A_K_NKEYS; i++) 1109 if (wcscmp(name, arrow[i].name) == 0) { 1110 arrow[i].type = XK_NOD; 1111 return 0; 1112 } 1113 return -1; 1114 } 1115 1116 1117 /* terminal_print_arrow(): 1118 * Print the arrow key bindings 1119 */ 1120 libedit_private void 1121 terminal_print_arrow(EditLine *el, const wchar_t *name) 1122 { 1123 int i; 1124 funckey_t *arrow = el->el_terminal.t_fkey; 1125 1126 for (i = 0; i < A_K_NKEYS; i++) 1127 if (*name == '\0' || wcscmp(name, arrow[i].name) == 0) 1128 if (arrow[i].type != XK_NOD) 1129 keymacro_kprint(el, arrow[i].name, 1130 &arrow[i].fun, arrow[i].type); 1131 } 1132 1133 1134 /* terminal_bind_arrow(): 1135 * Bind the arrow keys 1136 */ 1137 libedit_private void 1138 terminal_bind_arrow(EditLine *el) 1139 { 1140 el_action_t *map; 1141 const el_action_t *dmap; 1142 int i, j; 1143 char *p; 1144 funckey_t *arrow = el->el_terminal.t_fkey; 1145 1146 /* Check if the components needed are initialized */ 1147 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL) 1148 return; 1149 1150 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key; 1151 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs; 1152 1153 terminal_reset_arrow(el); 1154 1155 for (i = 0; i < A_K_NKEYS; i++) { 1156 wchar_t wt_str[VISUAL_WIDTH_MAX]; 1157 wchar_t *px; 1158 size_t n; 1159 1160 p = el->el_terminal.t_str[arrow[i].key]; 1161 if (!p || !*p) 1162 continue; 1163 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n) 1164 wt_str[n] = p[n]; 1165 while (n < VISUAL_WIDTH_MAX) 1166 wt_str[n++] = '\0'; 1167 px = wt_str; 1168 j = (unsigned char) *p; 1169 /* 1170 * Assign the arrow keys only if: 1171 * 1172 * 1. They are multi-character arrow keys and the user 1173 * has not re-assigned the leading character, or 1174 * has re-assigned the leading character to be 1175 * ED_SEQUENCE_LEAD_IN 1176 * 2. They are single arrow keys pointing to an 1177 * unassigned key. 1178 */ 1179 if (arrow[i].type == XK_NOD) 1180 keymacro_clear(el, map, px); 1181 else { 1182 if (p[1] && (dmap[j] == map[j] || 1183 map[j] == ED_SEQUENCE_LEAD_IN)) { 1184 keymacro_add(el, px, &arrow[i].fun, 1185 arrow[i].type); 1186 map[j] = ED_SEQUENCE_LEAD_IN; 1187 } else if (map[j] == ED_UNASSIGNED) { 1188 keymacro_clear(el, map, px); 1189 if (arrow[i].type == XK_CMD) 1190 map[j] = arrow[i].fun.cmd; 1191 else 1192 keymacro_add(el, px, &arrow[i].fun, 1193 arrow[i].type); 1194 } 1195 } 1196 } 1197 } 1198 1199 /* terminal_putc(): 1200 * Add a character 1201 */ 1202 static int 1203 terminal_putc(int c) 1204 { 1205 if (terminal_outfile == NULL) 1206 return -1; 1207 return fputc(c, terminal_outfile); 1208 } 1209 1210 static void 1211 terminal_tputs(EditLine *el, const char *cap, int affcnt) 1212 { 1213 #ifdef _REENTRANT 1214 pthread_mutex_lock(&terminal_mutex); 1215 #endif 1216 terminal_outfile = el->el_outfile; 1217 (void)tputs(cap, affcnt, terminal_putc); 1218 #ifdef _REENTRANT 1219 pthread_mutex_unlock(&terminal_mutex); 1220 #endif 1221 } 1222 1223 /* terminal__putc(): 1224 * Add a character 1225 */ 1226 libedit_private int 1227 terminal__putc(EditLine *el, wint_t c) 1228 { 1229 char buf[MB_LEN_MAX +1]; 1230 ssize_t i; 1231 if (c == (wint_t)MB_FILL_CHAR) 1232 return 0; 1233 if (c & EL_LITERAL) 1234 return fputs(literal_get(el, c), el->el_outfile); 1235 i = ct_encode_char(buf, (size_t)MB_LEN_MAX, c); 1236 if (i <= 0) 1237 return (int)i; 1238 buf[i] = '\0'; 1239 return fputs(buf, el->el_outfile); 1240 } 1241 1242 /* terminal__flush(): 1243 * Flush output 1244 */ 1245 libedit_private void 1246 terminal__flush(EditLine *el) 1247 { 1248 1249 (void) fflush(el->el_outfile); 1250 } 1251 1252 /* terminal_writec(): 1253 * Write the given character out, in a human readable form 1254 */ 1255 libedit_private void 1256 terminal_writec(EditLine *el, wint_t c) 1257 { 1258 wchar_t visbuf[VISUAL_WIDTH_MAX +1]; 1259 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c); 1260 if (vcnt < 0) 1261 vcnt = 0; 1262 visbuf[vcnt] = '\0'; 1263 terminal_overwrite(el, visbuf, (size_t)vcnt); 1264 terminal__flush(el); 1265 } 1266 1267 1268 /* terminal_telltc(): 1269 * Print the current termcap characteristics 1270 */ 1271 libedit_private int 1272 /*ARGSUSED*/ 1273 terminal_telltc(EditLine *el, int argc __attribute__((__unused__)), 1274 const wchar_t **argv __attribute__((__unused__))) 1275 { 1276 const struct termcapstr *t; 1277 char **ts; 1278 1279 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n"); 1280 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n"); 1281 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n", 1282 Val(T_co), Val(T_li)); 1283 (void) fprintf(el->el_outfile, 1284 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no"); 1285 (void) fprintf(el->el_outfile, 1286 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not "); 1287 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n", 1288 EL_HAS_AUTO_MARGINS ? "has" : "does not have"); 1289 if (EL_HAS_AUTO_MARGINS) 1290 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n", 1291 EL_HAS_MAGIC_MARGINS ? "has" : "does not have"); 1292 1293 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) { 1294 const char *ub; 1295 if (*ts && **ts) { 1296 ub = ct_encode_string(ct_visual_string( 1297 ct_decode_string(*ts, &el->el_scratch), 1298 &el->el_visual), &el->el_scratch); 1299 } else { 1300 ub = "(empty)"; 1301 } 1302 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n", 1303 t->long_name, t->name, ub); 1304 } 1305 (void) fputc('\n', el->el_outfile); 1306 return 0; 1307 } 1308 1309 1310 /* terminal_settc(): 1311 * Change the current terminal characteristics 1312 */ 1313 libedit_private int 1314 /*ARGSUSED*/ 1315 terminal_settc(EditLine *el, int argc __attribute__((__unused__)), 1316 const wchar_t **argv) 1317 { 1318 const struct termcapstr *ts; 1319 const struct termcapval *tv; 1320 char what[8], how[8]; 1321 1322 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1323 return -1; 1324 1325 strncpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what)); 1326 what[sizeof(what) - 1] = '\0'; 1327 strncpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how)); 1328 how[sizeof(how) - 1] = '\0'; 1329 1330 /* 1331 * Do the strings first 1332 */ 1333 for (ts = tstr; ts->name != NULL; ts++) 1334 if (strcmp(ts->name, what) == 0) 1335 break; 1336 1337 if (ts->name != NULL) { 1338 terminal_alloc(el, ts, how); 1339 terminal_setflags(el); 1340 return 0; 1341 } 1342 /* 1343 * Do the numeric ones second 1344 */ 1345 for (tv = tval; tv->name != NULL; tv++) 1346 if (strcmp(tv->name, what) == 0) 1347 break; 1348 1349 if (tv->name != NULL) 1350 return -1; 1351 1352 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1353 tv == &tval[T_am] || tv == &tval[T_xn]) { 1354 if (strcmp(how, "yes") == 0) 1355 el->el_terminal.t_val[tv - tval] = 1; 1356 else if (strcmp(how, "no") == 0) 1357 el->el_terminal.t_val[tv - tval] = 0; 1358 else { 1359 (void) fprintf(el->el_errfile, 1360 "%ls: Bad value `%s'.\n", argv[0], how); 1361 return -1; 1362 } 1363 terminal_setflags(el); 1364 if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1) 1365 return -1; 1366 return 0; 1367 } else { 1368 long i; 1369 char *ep; 1370 1371 i = strtol(how, &ep, 10); 1372 if (*ep != '\0') { 1373 (void) fprintf(el->el_errfile, 1374 "%ls: Bad value `%s'.\n", argv[0], how); 1375 return -1; 1376 } 1377 el->el_terminal.t_val[tv - tval] = (int) i; 1378 el->el_terminal.t_size.v = Val(T_co); 1379 el->el_terminal.t_size.h = Val(T_li); 1380 if (tv == &tval[T_co] || tv == &tval[T_li]) 1381 if (terminal_change_size(el, Val(T_li), Val(T_co)) 1382 == -1) 1383 return -1; 1384 return 0; 1385 } 1386 } 1387 1388 1389 /* terminal_gettc(): 1390 * Get the current terminal characteristics 1391 */ 1392 libedit_private int 1393 /*ARGSUSED*/ 1394 terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv) 1395 { 1396 const struct termcapstr *ts; 1397 const struct termcapval *tv; 1398 char *what; 1399 void *how; 1400 1401 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1402 return -1; 1403 1404 what = argv[1]; 1405 how = argv[2]; 1406 1407 /* 1408 * Do the strings first 1409 */ 1410 for (ts = tstr; ts->name != NULL; ts++) 1411 if (strcmp(ts->name, what) == 0) 1412 break; 1413 1414 if (ts->name != NULL) { 1415 *(char **)how = el->el_terminal.t_str[ts - tstr]; 1416 return 0; 1417 } 1418 /* 1419 * Do the numeric ones second 1420 */ 1421 for (tv = tval; tv->name != NULL; tv++) 1422 if (strcmp(tv->name, what) == 0) 1423 break; 1424 1425 if (tv->name == NULL) 1426 return -1; 1427 1428 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1429 tv == &tval[T_am] || tv == &tval[T_xn]) { 1430 static char yes[] = "yes"; 1431 static char no[] = "no"; 1432 if (el->el_terminal.t_val[tv - tval]) 1433 *(char **)how = yes; 1434 else 1435 *(char **)how = no; 1436 return 0; 1437 } else { 1438 *(int *)how = el->el_terminal.t_val[tv - tval]; 1439 return 0; 1440 } 1441 } 1442 1443 /* terminal_echotc(): 1444 * Print the termcap string out with variable substitution 1445 */ 1446 libedit_private int 1447 /*ARGSUSED*/ 1448 terminal_echotc(EditLine *el, int argc __attribute__((__unused__)), 1449 const wchar_t **argv) 1450 { 1451 char *cap, *scap; 1452 wchar_t *ep; 1453 int arg_need, arg_cols, arg_rows; 1454 int verbose = 0, silent = 0; 1455 char *area; 1456 static const char fmts[] = "%s\n", fmtd[] = "%d\n"; 1457 const struct termcapstr *t; 1458 char buf[TC_BUFSIZE]; 1459 long i; 1460 1461 area = buf; 1462 1463 if (argv == NULL || argv[1] == NULL) 1464 return -1; 1465 argv++; 1466 1467 if (argv[0][0] == '-') { 1468 switch (argv[0][1]) { 1469 case 'v': 1470 verbose = 1; 1471 break; 1472 case 's': 1473 silent = 1; 1474 break; 1475 default: 1476 /* stderror(ERR_NAME | ERR_TCUSAGE); */ 1477 break; 1478 } 1479 argv++; 1480 } 1481 if (!*argv || *argv[0] == '\0') 1482 return 0; 1483 if (wcscmp(*argv, L"tabs") == 0) { 1484 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no"); 1485 return 0; 1486 } else if (wcscmp(*argv, L"meta") == 0) { 1487 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no"); 1488 return 0; 1489 } else if (wcscmp(*argv, L"xn") == 0) { 1490 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ? 1491 "yes" : "no"); 1492 return 0; 1493 } else if (wcscmp(*argv, L"am") == 0) { 1494 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ? 1495 "yes" : "no"); 1496 return 0; 1497 } else if (wcscmp(*argv, L"baud") == 0) { 1498 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed); 1499 return 0; 1500 } else if (wcscmp(*argv, L"rows") == 0 || 1501 wcscmp(*argv, L"lines") == 0) { 1502 (void) fprintf(el->el_outfile, fmtd, Val(T_li)); 1503 return 0; 1504 } else if (wcscmp(*argv, L"cols") == 0) { 1505 (void) fprintf(el->el_outfile, fmtd, Val(T_co)); 1506 return 0; 1507 } 1508 /* 1509 * Try to use our local definition first 1510 */ 1511 scap = NULL; 1512 for (t = tstr; t->name != NULL; t++) 1513 if (strcmp(t->name, 1514 ct_encode_string(*argv, &el->el_scratch)) == 0) { 1515 scap = el->el_terminal.t_str[t - tstr]; 1516 break; 1517 } 1518 if (t->name == NULL) { 1519 /* XXX: some systems' tgetstr needs non const */ 1520 scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area); 1521 } 1522 if (!scap || scap[0] == '\0') { 1523 if (!silent) 1524 (void) fprintf(el->el_errfile, 1525 "echotc: Termcap parameter `%ls' not found.\n", 1526 *argv); 1527 return -1; 1528 } 1529 /* 1530 * Count home many values we need for this capability. 1531 */ 1532 for (cap = scap, arg_need = 0; *cap; cap++) 1533 if (*cap == '%') 1534 switch (*++cap) { 1535 case 'd': 1536 case '2': 1537 case '3': 1538 case '.': 1539 case '+': 1540 arg_need++; 1541 break; 1542 case '%': 1543 case '>': 1544 case 'i': 1545 case 'r': 1546 case 'n': 1547 case 'B': 1548 case 'D': 1549 break; 1550 default: 1551 /* 1552 * hpux has lot's of them... 1553 */ 1554 if (verbose) 1555 (void) fprintf(el->el_errfile, 1556 "echotc: Warning: unknown termcap %% `%c'.\n", 1557 *cap); 1558 /* This is bad, but I won't complain */ 1559 break; 1560 } 1561 1562 switch (arg_need) { 1563 case 0: 1564 argv++; 1565 if (*argv && *argv[0]) { 1566 if (!silent) 1567 (void) fprintf(el->el_errfile, 1568 "echotc: Warning: Extra argument `%ls'.\n", 1569 *argv); 1570 return -1; 1571 } 1572 terminal_tputs(el, scap, 1); 1573 break; 1574 case 1: 1575 argv++; 1576 if (!*argv || *argv[0] == '\0') { 1577 if (!silent) 1578 (void) fprintf(el->el_errfile, 1579 "echotc: Warning: Missing argument.\n"); 1580 return -1; 1581 } 1582 arg_cols = 0; 1583 i = wcstol(*argv, &ep, 10); 1584 if (*ep != '\0' || i < 0) { 1585 if (!silent) 1586 (void) fprintf(el->el_errfile, 1587 "echotc: Bad value `%ls' for rows.\n", 1588 *argv); 1589 return -1; 1590 } 1591 arg_rows = (int) i; 1592 argv++; 1593 if (*argv && *argv[0]) { 1594 if (!silent) 1595 (void) fprintf(el->el_errfile, 1596 "echotc: Warning: Extra argument `%ls" 1597 "'.\n", *argv); 1598 return -1; 1599 } 1600 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1); 1601 break; 1602 default: 1603 /* This is wrong, but I will ignore it... */ 1604 if (verbose) 1605 (void) fprintf(el->el_errfile, 1606 "echotc: Warning: Too many required arguments (%d).\n", 1607 arg_need); 1608 /* FALLTHROUGH */ 1609 case 2: 1610 argv++; 1611 if (!*argv || *argv[0] == '\0') { 1612 if (!silent) 1613 (void) fprintf(el->el_errfile, 1614 "echotc: Warning: Missing argument.\n"); 1615 return -1; 1616 } 1617 i = wcstol(*argv, &ep, 10); 1618 if (*ep != '\0' || i < 0) { 1619 if (!silent) 1620 (void) fprintf(el->el_errfile, 1621 "echotc: Bad value `%ls' for cols.\n", 1622 *argv); 1623 return -1; 1624 } 1625 arg_cols = (int) i; 1626 argv++; 1627 if (!*argv || *argv[0] == '\0') { 1628 if (!silent) 1629 (void) fprintf(el->el_errfile, 1630 "echotc: Warning: Missing argument.\n"); 1631 return -1; 1632 } 1633 i = wcstol(*argv, &ep, 10); 1634 if (*ep != '\0' || i < 0) { 1635 if (!silent) 1636 (void) fprintf(el->el_errfile, 1637 "echotc: Bad value `%ls' for rows.\n", 1638 *argv); 1639 return -1; 1640 } 1641 arg_rows = (int) i; 1642 if (*ep != '\0') { 1643 if (!silent) 1644 (void) fprintf(el->el_errfile, 1645 "echotc: Bad value `%ls'.\n", *argv); 1646 return -1; 1647 } 1648 argv++; 1649 if (*argv && *argv[0]) { 1650 if (!silent) 1651 (void) fprintf(el->el_errfile, 1652 "echotc: Warning: Extra argument `%ls" 1653 "'.\n", *argv); 1654 return -1; 1655 } 1656 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows); 1657 break; 1658 } 1659 return 0; 1660 } 1661