terminal.c revision 296435
1/* $NetBSD: terminal.c,v 1.14 2012/05/30 18:21:14 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 38static char sccsid[] = "@(#)term.c 8.2 (Berkeley) 4/30/95"; 39#else 40__RCSID("$NetBSD: terminal.c,v 1.14 2012/05/30 18:21:14 christos Exp $"); 41#endif 42#endif /* not lint && not SCCSID */ 43#include <sys/cdefs.h> 44__FBSDID("$FreeBSD: head/lib/libedit/terminal.c 296435 2016-03-06 21:32:54Z pfg $"); 45 46/* 47 * terminal.c: Editor/termcap-curses interface 48 * We have to declare a static variable here, since the 49 * termcap putchar routine does not take an argument! 50 */ 51#include <stdio.h> 52#include <signal.h> 53#include <string.h> 54#include <stdlib.h> 55#include <unistd.h> 56#include <limits.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#include <sys/types.h> 72#include <sys/ioctl.h> 73 74#ifdef _REENTRANT 75#include <pthread.h> 76#endif 77 78#include "el.h" 79 80/* 81 * IMPORTANT NOTE: these routines are allowed to look at the current screen 82 * and the current position assuming that it is correct. If this is not 83 * true, then the update will be WRONG! This is (should be) a valid 84 * assumption... 85 */ 86 87#define TC_BUFSIZE ((size_t)2048) 88 89#define GoodStr(a) (el->el_terminal.t_str[a] != NULL && \ 90 el->el_terminal.t_str[a][0] != '\0') 91#define Str(a) el->el_terminal.t_str[a] 92#define Val(a) el->el_terminal.t_val[a] 93 94private const struct termcapstr { 95 const char *name; 96 const char *long_name; 97} tstr[] = { 98#define T_al 0 99 { "al", "add new blank line" }, 100#define T_bl 1 101 { "bl", "audible bell" }, 102#define T_cd 2 103 { "cd", "clear to bottom" }, 104#define T_ce 3 105 { "ce", "clear to end of line" }, 106#define T_ch 4 107 { "ch", "cursor to horiz pos" }, 108#define T_cl 5 109 { "cl", "clear screen" }, 110#define T_dc 6 111 { "dc", "delete a character" }, 112#define T_dl 7 113 { "dl", "delete a line" }, 114#define T_dm 8 115 { "dm", "start delete mode" }, 116#define T_ed 9 117 { "ed", "end delete mode" }, 118#define T_ei 10 119 { "ei", "end insert mode" }, 120#define T_fs 11 121 { "fs", "cursor from status line" }, 122#define T_ho 12 123 { "ho", "home cursor" }, 124#define T_ic 13 125 { "ic", "insert character" }, 126#define T_im 14 127 { "im", "start insert mode" }, 128#define T_ip 15 129 { "ip", "insert padding" }, 130#define T_kd 16 131 { "kd", "sends cursor down" }, 132#define T_kl 17 133 { "kl", "sends cursor left" }, 134#define T_kr 18 135 { "kr", "sends cursor right" }, 136#define T_ku 19 137 { "ku", "sends cursor up" }, 138#define T_md 20 139 { "md", "begin bold" }, 140#define T_me 21 141 { "me", "end attributes" }, 142#define T_nd 22 143 { "nd", "non destructive space" }, 144#define T_se 23 145 { "se", "end standout" }, 146#define T_so 24 147 { "so", "begin standout" }, 148#define T_ts 25 149 { "ts", "cursor to status line" }, 150#define T_up 26 151 { "up", "cursor up one" }, 152#define T_us 27 153 { "us", "begin underline" }, 154#define T_ue 28 155 { "ue", "end underline" }, 156#define T_vb 29 157 { "vb", "visible bell" }, 158#define T_DC 30 159 { "DC", "delete multiple chars" }, 160#define T_DO 31 161 { "DO", "cursor down multiple" }, 162#define T_IC 32 163 { "IC", "insert multiple chars" }, 164#define T_LE 33 165 { "LE", "cursor left multiple" }, 166#define T_RI 34 167 { "RI", "cursor right multiple" }, 168#define T_UP 35 169 { "UP", "cursor up multiple" }, 170#define T_kh 36 171 { "kh", "send cursor home" }, 172#define T_at7 37 173 { "@7", "send cursor end" }, 174#define T_kD 38 175 { "kD", "send cursor delete" }, 176#define T_str 39 177 { NULL, NULL } 178}; 179 180private const struct termcapval { 181 const char *name; 182 const char *long_name; 183} tval[] = { 184#define T_am 0 185 { "am", "has automatic margins" }, 186#define T_pt 1 187 { "pt", "has physical tabs" }, 188#define T_li 2 189 { "li", "Number of lines" }, 190#define T_co 3 191 { "co", "Number of columns" }, 192#define T_km 4 193 { "km", "Has meta key" }, 194#define T_xt 5 195 { "xt", "Tab chars destructive" }, 196#define T_xn 6 197 { "xn", "newline ignored at right margin" }, 198#define T_MT 7 199 { "MT", "Has meta key" }, /* XXX? */ 200#define T_val 8 201 { NULL, NULL, } 202}; 203/* do two or more of the attributes use me */ 204 205private void terminal_setflags(EditLine *); 206private int terminal_rebuffer_display(EditLine *); 207private void terminal_free_display(EditLine *); 208private int terminal_alloc_display(EditLine *); 209private void terminal_alloc(EditLine *, const struct termcapstr *, 210 const char *); 211private void terminal_init_arrow(EditLine *); 212private void terminal_reset_arrow(EditLine *); 213private int terminal_putc(int); 214private void terminal_tputs(EditLine *, const char *, int); 215 216#ifdef _REENTRANT 217private pthread_mutex_t terminal_mutex = PTHREAD_MUTEX_INITIALIZER; 218#endif 219private FILE *terminal_outfile = NULL; 220 221 222/* terminal_setflags(): 223 * Set the terminal capability flags 224 */ 225private void 226terminal_setflags(EditLine *el) 227{ 228 EL_FLAGS = 0; 229 if (el->el_tty.t_tabs) 230 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0; 231 232 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0; 233 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0; 234 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0; 235 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ? 236 TERM_CAN_INSERT : 0; 237 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0; 238 EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0; 239 EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0; 240 241 if (GoodStr(T_me) && GoodStr(T_ue)) 242 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ? 243 TERM_CAN_ME : 0; 244 else 245 EL_FLAGS &= ~TERM_CAN_ME; 246 if (GoodStr(T_me) && GoodStr(T_se)) 247 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ? 248 TERM_CAN_ME : 0; 249 250 251#ifdef DEBUG_SCREEN 252 if (!EL_CAN_UP) { 253 (void) fprintf(el->el_errfile, 254 "WARNING: Your terminal cannot move up.\n"); 255 (void) fprintf(el->el_errfile, 256 "Editing may be odd for long lines.\n"); 257 } 258 if (!EL_CAN_CEOL) 259 (void) fprintf(el->el_errfile, "no clear EOL capability.\n"); 260 if (!EL_CAN_DELETE) 261 (void) fprintf(el->el_errfile, "no delete char capability.\n"); 262 if (!EL_CAN_INSERT) 263 (void) fprintf(el->el_errfile, "no insert char capability.\n"); 264#endif /* DEBUG_SCREEN */ 265} 266 267/* terminal_init(): 268 * Initialize the terminal stuff 269 */ 270protected int 271terminal_init(EditLine *el) 272{ 273 274 el->el_terminal.t_buf = el_malloc(TC_BUFSIZE * 275 sizeof(*el->el_terminal.t_buf)); 276 if (el->el_terminal.t_buf == NULL) 277 return -1; 278 el->el_terminal.t_cap = el_malloc(TC_BUFSIZE * 279 sizeof(*el->el_terminal.t_cap)); 280 if (el->el_terminal.t_cap == NULL) 281 return -1; 282 el->el_terminal.t_fkey = el_malloc(A_K_NKEYS * 283 sizeof(*el->el_terminal.t_fkey)); 284 if (el->el_terminal.t_fkey == NULL) 285 return -1; 286 el->el_terminal.t_loc = 0; 287 el->el_terminal.t_str = el_malloc(T_str * 288 sizeof(*el->el_terminal.t_str)); 289 if (el->el_terminal.t_str == NULL) 290 return -1; 291 (void) memset(el->el_terminal.t_str, 0, T_str * 292 sizeof(*el->el_terminal.t_str)); 293 el->el_terminal.t_val = el_malloc(T_val * 294 sizeof(*el->el_terminal.t_val)); 295 if (el->el_terminal.t_val == NULL) 296 return -1; 297 (void) memset(el->el_terminal.t_val, 0, T_val * 298 sizeof(*el->el_terminal.t_val)); 299 (void) terminal_set(el, NULL); 300 terminal_init_arrow(el); 301 return 0; 302} 303 304/* terminal_end(): 305 * Clean up the terminal stuff 306 */ 307protected void 308terminal_end(EditLine *el) 309{ 310 311 el_free(el->el_terminal.t_buf); 312 el->el_terminal.t_buf = NULL; 313 el_free(el->el_terminal.t_cap); 314 el->el_terminal.t_cap = NULL; 315 el->el_terminal.t_loc = 0; 316 el_free(el->el_terminal.t_str); 317 el->el_terminal.t_str = NULL; 318 el_free(el->el_terminal.t_val); 319 el->el_terminal.t_val = NULL; 320 el_free(el->el_terminal.t_fkey); 321 el->el_terminal.t_fkey = NULL; 322 terminal_free_display(el); 323} 324 325 326/* terminal_alloc(): 327 * Maintain a string pool for termcap strings 328 */ 329private void 330terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap) 331{ 332 char termbuf[TC_BUFSIZE]; 333 size_t tlen, clen; 334 char **tlist = el->el_terminal.t_str; 335 char **tmp, **str = &tlist[t - tstr]; 336 337 (void) memset(termbuf, 0, sizeof(termbuf)); 338 if (cap == NULL || *cap == '\0') { 339 *str = NULL; 340 return; 341 } else 342 clen = strlen(cap); 343 344 tlen = *str == NULL ? 0 : strlen(*str); 345 346 /* 347 * New string is shorter; no need to allocate space 348 */ 349 if (clen <= tlen) { 350 if (*str) 351 (void) strcpy(*str, cap); /* XXX strcpy is safe */ 352 return; 353 } 354 /* 355 * New string is longer; see if we have enough space to append 356 */ 357 if (el->el_terminal.t_loc + 3 < TC_BUFSIZE) { 358 /* XXX strcpy is safe */ 359 (void) strcpy(*str = &el->el_terminal.t_buf[ 360 el->el_terminal.t_loc], cap); 361 el->el_terminal.t_loc += clen + 1; /* one for \0 */ 362 return; 363 } 364 /* 365 * Compact our buffer; no need to check compaction, cause we know it 366 * fits... 367 */ 368 tlen = 0; 369 for (tmp = tlist; tmp < &tlist[T_str]; tmp++) 370 if (*tmp != NULL && *tmp != '\0' && *tmp != *str) { 371 char *ptr; 372 373 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++) 374 continue; 375 termbuf[tlen++] = '\0'; 376 } 377 memcpy(el->el_terminal.t_buf, termbuf, TC_BUFSIZE); 378 el->el_terminal.t_loc = tlen; 379 if (el->el_terminal.t_loc + 3 >= TC_BUFSIZE) { 380 (void) fprintf(el->el_errfile, 381 "Out of termcap string space.\n"); 382 return; 383 } 384 /* XXX strcpy is safe */ 385 (void) strcpy(*str = &el->el_terminal.t_buf[el->el_terminal.t_loc], 386 cap); 387 el->el_terminal.t_loc += (size_t)clen + 1; /* one for \0 */ 388 return; 389} 390 391 392/* terminal_rebuffer_display(): 393 * Rebuffer the display after the screen changed size 394 */ 395private int 396terminal_rebuffer_display(EditLine *el) 397{ 398 coord_t *c = &el->el_terminal.t_size; 399 400 terminal_free_display(el); 401 402 c->h = Val(T_co); 403 c->v = Val(T_li); 404 405 if (terminal_alloc_display(el) == -1) 406 return -1; 407 return 0; 408} 409 410 411/* terminal_alloc_display(): 412 * Allocate a new display. 413 */ 414private int 415terminal_alloc_display(EditLine *el) 416{ 417 int i; 418 Char **b; 419 coord_t *c = &el->el_terminal.t_size; 420 421 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1)); 422 if (b == NULL) 423 return -1; 424 for (i = 0; i < c->v; i++) { 425 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1)); 426 if (b[i] == NULL) { 427 while (--i >= 0) 428 el_free(b[i]); 429 el_free(b); 430 return -1; 431 } 432 } 433 b[c->v] = NULL; 434 el->el_display = b; 435 436 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1)); 437 if (b == NULL) 438 return -1; 439 for (i = 0; i < c->v; i++) { 440 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1)); 441 if (b[i] == NULL) { 442 while (--i >= 0) 443 el_free(b[i]); 444 el_free(b); 445 return -1; 446 } 447 } 448 b[c->v] = NULL; 449 el->el_vdisplay = b; 450 return 0; 451} 452 453 454/* terminal_free_display(): 455 * Free the display buffers 456 */ 457private void 458terminal_free_display(EditLine *el) 459{ 460 Char **b; 461 Char **bufp; 462 463 b = el->el_display; 464 el->el_display = NULL; 465 if (b != NULL) { 466 for (bufp = b; *bufp != NULL; bufp++) 467 el_free(*bufp); 468 el_free(b); 469 } 470 b = el->el_vdisplay; 471 el->el_vdisplay = NULL; 472 if (b != NULL) { 473 for (bufp = b; *bufp != NULL; bufp++) 474 el_free(*bufp); 475 el_free(b); 476 } 477} 478 479 480/* terminal_move_to_line(): 481 * move to line <where> (first line == 0) 482 * as efficiently as possible 483 */ 484protected void 485terminal_move_to_line(EditLine *el, int where) 486{ 487 int del; 488 489 if (where == el->el_cursor.v) 490 return; 491 492 if (where > el->el_terminal.t_size.v) { 493#ifdef DEBUG_SCREEN 494 (void) fprintf(el->el_errfile, 495 "terminal_move_to_line: where is ridiculous: %d\r\n", 496 where); 497#endif /* DEBUG_SCREEN */ 498 return; 499 } 500 if ((del = where - el->el_cursor.v) > 0) { 501 while (del > 0) { 502 if (EL_HAS_AUTO_MARGINS && 503 el->el_display[el->el_cursor.v][0] != '\0') { 504 size_t h = (size_t) 505 (el->el_terminal.t_size.h - 1); 506#ifdef WIDECHAR 507 for (; h > 0 && 508 el->el_display[el->el_cursor.v][h] == 509 MB_FILL_CHAR; 510 h--) 511 continue; 512#endif 513 /* move without newline */ 514 terminal_move_to_char(el, (int)h); 515 terminal_overwrite(el, &el->el_display 516 [el->el_cursor.v][el->el_cursor.h], 517 (size_t)(el->el_terminal.t_size.h - 518 el->el_cursor.h)); 519 /* updates Cursor */ 520 del--; 521 } else { 522 if ((del > 1) && GoodStr(T_DO)) { 523 terminal_tputs(el, tgoto(Str(T_DO), del, 524 del), del); 525 del = 0; 526 } else { 527 for (; del > 0; del--) 528 terminal__putc(el, '\n'); 529 /* because the \n will become \r\n */ 530 el->el_cursor.h = 0; 531 } 532 } 533 } 534 } else { /* del < 0 */ 535 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up))) 536 terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del); 537 else { 538 if (GoodStr(T_up)) 539 for (; del < 0; del++) 540 terminal_tputs(el, Str(T_up), 1); 541 } 542 } 543 el->el_cursor.v = where;/* now where is here */ 544} 545 546 547/* terminal_move_to_char(): 548 * Move to the character position specified 549 */ 550protected void 551terminal_move_to_char(EditLine *el, int where) 552{ 553 int del, i; 554 555mc_again: 556 if (where == el->el_cursor.h) 557 return; 558 559 if (where > el->el_terminal.t_size.h) { 560#ifdef DEBUG_SCREEN 561 (void) fprintf(el->el_errfile, 562 "terminal_move_to_char: where is riduculous: %d\r\n", 563 where); 564#endif /* DEBUG_SCREEN */ 565 return; 566 } 567 if (!where) { /* if where is first column */ 568 terminal__putc(el, '\r'); /* do a CR */ 569 el->el_cursor.h = 0; 570 return; 571 } 572 del = where - el->el_cursor.h; 573 574 if ((del < -4 || del > 4) && GoodStr(T_ch)) 575 /* go there directly */ 576 terminal_tputs(el, tgoto(Str(T_ch), where, where), where); 577 else { 578 if (del > 0) { /* moving forward */ 579 if ((del > 4) && GoodStr(T_RI)) 580 terminal_tputs(el, tgoto(Str(T_RI), del, del), 581 del); 582 else { 583 /* if I can do tabs, use them */ 584 if (EL_CAN_TAB) { 585 if ((el->el_cursor.h & 0370) != 586 (where & ~0x7) 587#ifdef WIDECHAR 588 && (el->el_display[ 589 el->el_cursor.v][where & 0370] != 590 MB_FILL_CHAR) 591#endif 592 ) { 593 /* if not within tab stop */ 594 for (i = 595 (el->el_cursor.h & 0370); 596 i < (where & ~0x7); 597 i += 8) 598 terminal__putc(el, 599 '\t'); 600 /* then tab over */ 601 el->el_cursor.h = where & ~0x7; 602 } 603 } 604 /* 605 * it's usually cheaper to just write the 606 * chars, so we do. 607 */ 608 /* 609 * NOTE THAT terminal_overwrite() WILL CHANGE 610 * el->el_cursor.h!!! 611 */ 612 terminal_overwrite(el, &el->el_display[ 613 el->el_cursor.v][el->el_cursor.h], 614 (size_t)(where - el->el_cursor.h)); 615 616 } 617 } else { /* del < 0 := moving backward */ 618 if ((-del > 4) && GoodStr(T_LE)) 619 terminal_tputs(el, tgoto(Str(T_LE), -del, -del), 620 -del); 621 else { /* can't go directly there */ 622 /* 623 * if the "cost" is greater than the "cost" 624 * from col 0 625 */ 626 if (EL_CAN_TAB ? 627 ((unsigned int)-del > 628 (((unsigned int) where >> 3) + 629 (where & 07))) 630 : (-del > where)) { 631 terminal__putc(el, '\r');/* do a CR */ 632 el->el_cursor.h = 0; 633 goto mc_again; /* and try again */ 634 } 635 for (i = 0; i < -del; i++) 636 terminal__putc(el, '\b'); 637 } 638 } 639 } 640 el->el_cursor.h = where; /* now where is here */ 641} 642 643 644/* terminal_overwrite(): 645 * Overstrike num characters 646 * Assumes MB_FILL_CHARs are present to keep the column count correct 647 */ 648protected void 649terminal_overwrite(EditLine *el, const Char *cp, size_t n) 650{ 651 if (n == 0) 652 return; 653 654 if (n > (size_t)el->el_terminal.t_size.h) { 655#ifdef DEBUG_SCREEN 656 (void) fprintf(el->el_errfile, 657 "terminal_overwrite: n is riduculous: %d\r\n", n); 658#endif /* DEBUG_SCREEN */ 659 return; 660 } 661 662 do { 663 /* terminal__putc() ignores any MB_FILL_CHARs */ 664 terminal__putc(el, *cp++); 665 el->el_cursor.h++; 666 } while (--n); 667 668 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */ 669 if (EL_HAS_AUTO_MARGINS) { /* yes */ 670 el->el_cursor.h = 0; 671 el->el_cursor.v++; 672 if (EL_HAS_MAGIC_MARGINS) { 673 /* force the wrap to avoid the "magic" 674 * situation */ 675 Char c; 676 if ((c = el->el_display[el->el_cursor.v] 677 [el->el_cursor.h]) != '\0') { 678 terminal_overwrite(el, &c, (size_t)1); 679#ifdef WIDECHAR 680 while (el->el_display[el->el_cursor.v] 681 [el->el_cursor.h] == MB_FILL_CHAR) 682 el->el_cursor.h++; 683#endif 684 } else { 685 terminal__putc(el, ' '); 686 el->el_cursor.h = 1; 687 } 688 } 689 } else /* no wrap, but cursor stays on screen */ 690 el->el_cursor.h = el->el_terminal.t_size.h - 1; 691 } 692} 693 694 695/* terminal_deletechars(): 696 * Delete num characters 697 */ 698protected void 699terminal_deletechars(EditLine *el, int num) 700{ 701 if (num <= 0) 702 return; 703 704 if (!EL_CAN_DELETE) { 705#ifdef DEBUG_EDIT 706 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n"); 707#endif /* DEBUG_EDIT */ 708 return; 709 } 710 if (num > el->el_terminal.t_size.h) { 711#ifdef DEBUG_SCREEN 712 (void) fprintf(el->el_errfile, 713 "terminal_deletechars: num is riduculous: %d\r\n", num); 714#endif /* DEBUG_SCREEN */ 715 return; 716 } 717 if (GoodStr(T_DC)) /* if I have multiple delete */ 718 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more 719 * expen. */ 720 terminal_tputs(el, tgoto(Str(T_DC), num, num), num); 721 return; 722 } 723 if (GoodStr(T_dm)) /* if I have delete mode */ 724 terminal_tputs(el, Str(T_dm), 1); 725 726 if (GoodStr(T_dc)) /* else do one at a time */ 727 while (num--) 728 terminal_tputs(el, Str(T_dc), 1); 729 730 if (GoodStr(T_ed)) /* if I have delete mode */ 731 terminal_tputs(el, Str(T_ed), 1); 732} 733 734 735/* terminal_insertwrite(): 736 * Puts terminal in insert character mode or inserts num 737 * characters in the line 738 * Assumes MB_FILL_CHARs are present to keep column count correct 739 */ 740protected void 741terminal_insertwrite(EditLine *el, Char *cp, int num) 742{ 743 if (num <= 0) 744 return; 745 if (!EL_CAN_INSERT) { 746#ifdef DEBUG_EDIT 747 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n"); 748#endif /* DEBUG_EDIT */ 749 return; 750 } 751 if (num > el->el_terminal.t_size.h) { 752#ifdef DEBUG_SCREEN 753 (void) fprintf(el->el_errfile, 754 "StartInsert: num is riduculous: %d\r\n", num); 755#endif /* DEBUG_SCREEN */ 756 return; 757 } 758 if (GoodStr(T_IC)) /* if I have multiple insert */ 759 if ((num > 1) || !GoodStr(T_ic)) { 760 /* if ic would be more expensive */ 761 terminal_tputs(el, tgoto(Str(T_IC), num, num), num); 762 terminal_overwrite(el, cp, (size_t)num); 763 /* this updates el_cursor.h */ 764 return; 765 } 766 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */ 767 terminal_tputs(el, Str(T_im), 1); 768 769 el->el_cursor.h += num; 770 do 771 terminal__putc(el, *cp++); 772 while (--num); 773 774 if (GoodStr(T_ip)) /* have to make num chars insert */ 775 terminal_tputs(el, Str(T_ip), 1); 776 777 terminal_tputs(el, Str(T_ei), 1); 778 return; 779 } 780 do { 781 if (GoodStr(T_ic)) /* have to make num chars insert */ 782 terminal_tputs(el, Str(T_ic), 1); 783 784 terminal__putc(el, *cp++); 785 786 el->el_cursor.h++; 787 788 if (GoodStr(T_ip)) /* have to make num chars insert */ 789 terminal_tputs(el, Str(T_ip), 1); 790 /* pad the inserted char */ 791 792 } while (--num); 793} 794 795 796/* terminal_clear_EOL(): 797 * clear to end of line. There are num characters to clear 798 */ 799protected void 800terminal_clear_EOL(EditLine *el, int num) 801{ 802 int i; 803 804 if (EL_CAN_CEOL && GoodStr(T_ce)) 805 terminal_tputs(el, Str(T_ce), 1); 806 else { 807 for (i = 0; i < num; i++) 808 terminal__putc(el, ' '); 809 el->el_cursor.h += num; /* have written num spaces */ 810 } 811} 812 813 814/* terminal_clear_screen(): 815 * Clear the screen 816 */ 817protected void 818terminal_clear_screen(EditLine *el) 819{ /* clear the whole screen and home */ 820 821 if (GoodStr(T_cl)) 822 /* send the clear screen code */ 823 terminal_tputs(el, Str(T_cl), Val(T_li)); 824 else if (GoodStr(T_ho) && GoodStr(T_cd)) { 825 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */ 826 /* clear to bottom of screen */ 827 terminal_tputs(el, Str(T_cd), Val(T_li)); 828 } else { 829 terminal__putc(el, '\r'); 830 terminal__putc(el, '\n'); 831 } 832} 833 834 835/* terminal_beep(): 836 * Beep the way the terminal wants us 837 */ 838protected void 839terminal_beep(EditLine *el) 840{ 841 if (GoodStr(T_bl)) 842 /* what termcap says we should use */ 843 terminal_tputs(el, Str(T_bl), 1); 844 else 845 terminal__putc(el, '\007'); /* an ASCII bell; ^G */ 846} 847 848 849protected void 850terminal_get(EditLine *el, const char **term) 851{ 852 *term = el->el_terminal.t_name; 853} 854 855 856/* terminal_set(): 857 * Read in the terminal capabilities from the requested terminal 858 */ 859protected int 860terminal_set(EditLine *el, const char *term) 861{ 862 int i; 863 char buf[TC_BUFSIZE]; 864 char *area; 865 const struct termcapstr *t; 866 sigset_t oset, nset; 867 int lins, cols; 868 869 (void) sigemptyset(&nset); 870 (void) sigaddset(&nset, SIGWINCH); 871 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 872 873 area = buf; 874 875 876 if (term == NULL) 877 term = getenv("TERM"); 878 879 if (!term || !term[0]) 880 term = "dumb"; 881 882 if (strcmp(term, "emacs") == 0) 883 el->el_flags |= EDIT_DISABLED; 884 885 (void) memset(el->el_terminal.t_cap, 0, TC_BUFSIZE); 886 887 i = tgetent(el->el_terminal.t_cap, term); 888 889 if (i <= 0) { 890 if (i == -1) 891 (void) fprintf(el->el_errfile, 892 "Cannot read termcap database;\n"); 893 else if (i == 0) 894 (void) fprintf(el->el_errfile, 895 "No entry for terminal type \"%s\";\n", term); 896 (void) fprintf(el->el_errfile, 897 "using dumb terminal settings.\n"); 898 Val(T_co) = 80; /* do a dumb terminal */ 899 Val(T_pt) = Val(T_km) = Val(T_li) = 0; 900 Val(T_xt) = Val(T_MT); 901 for (t = tstr; t->name != NULL; t++) 902 terminal_alloc(el, t, NULL); 903 } else { 904 /* auto/magic margins */ 905 Val(T_am) = tgetflag("am"); 906 Val(T_xn) = tgetflag("xn"); 907 /* Can we tab */ 908 Val(T_pt) = tgetflag("pt"); 909 Val(T_xt) = tgetflag("xt"); 910 /* do we have a meta? */ 911 Val(T_km) = tgetflag("km"); 912 Val(T_MT) = tgetflag("MT"); 913 /* Get the size */ 914 Val(T_co) = tgetnum("co"); 915 Val(T_li) = tgetnum("li"); 916 for (t = tstr; t->name != NULL; t++) { 917 /* XXX: some systems' tgetstr needs non const */ 918 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name), 919 &area)); 920 } 921 } 922 923 if (Val(T_co) < 2) 924 Val(T_co) = 80; /* just in case */ 925 if (Val(T_li) < 1) 926 Val(T_li) = 24; 927 928 el->el_terminal.t_size.v = Val(T_co); 929 el->el_terminal.t_size.h = Val(T_li); 930 931 terminal_setflags(el); 932 933 /* get the correct window size */ 934 (void) terminal_get_size(el, &lins, &cols); 935 if (terminal_change_size(el, lins, cols) == -1) 936 return -1; 937 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 938 terminal_bind_arrow(el); 939 el->el_terminal.t_name = term; 940 return i <= 0 ? -1 : 0; 941} 942 943 944/* terminal_get_size(): 945 * Return the new window size in lines and cols, and 946 * true if the size was changed. 947 */ 948protected int 949terminal_get_size(EditLine *el, int *lins, int *cols) 950{ 951 952 *cols = Val(T_co); 953 *lins = Val(T_li); 954 955#ifdef TIOCGWINSZ 956 { 957 struct winsize ws; 958 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) { 959 if (ws.ws_col) 960 *cols = ws.ws_col; 961 if (ws.ws_row) 962 *lins = ws.ws_row; 963 } 964 } 965#endif 966#ifdef TIOCGSIZE 967 { 968 struct ttysize ts; 969 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) { 970 if (ts.ts_cols) 971 *cols = ts.ts_cols; 972 if (ts.ts_lines) 973 *lins = ts.ts_lines; 974 } 975 } 976#endif 977 return Val(T_co) != *cols || Val(T_li) != *lins; 978} 979 980 981/* terminal_change_size(): 982 * Change the size of the terminal 983 */ 984protected int 985terminal_change_size(EditLine *el, int lins, int cols) 986{ 987 /* 988 * Just in case 989 */ 990 Val(T_co) = (cols < 2) ? 80 : cols; 991 Val(T_li) = (lins < 1) ? 24 : lins; 992 993 /* re-make display buffers */ 994 if (terminal_rebuffer_display(el) == -1) 995 return -1; 996 re_clear_display(el); 997 return 0; 998} 999 1000 1001/* terminal_init_arrow(): 1002 * Initialize the arrow key bindings from termcap 1003 */ 1004private void 1005terminal_init_arrow(EditLine *el) 1006{ 1007 funckey_t *arrow = el->el_terminal.t_fkey; 1008 1009 arrow[A_K_DN].name = STR("down"); 1010 arrow[A_K_DN].key = T_kd; 1011 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY; 1012 arrow[A_K_DN].type = XK_CMD; 1013 1014 arrow[A_K_UP].name = STR("up"); 1015 arrow[A_K_UP].key = T_ku; 1016 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY; 1017 arrow[A_K_UP].type = XK_CMD; 1018 1019 arrow[A_K_LT].name = STR("left"); 1020 arrow[A_K_LT].key = T_kl; 1021 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR; 1022 arrow[A_K_LT].type = XK_CMD; 1023 1024 arrow[A_K_RT].name = STR("right"); 1025 arrow[A_K_RT].key = T_kr; 1026 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR; 1027 arrow[A_K_RT].type = XK_CMD; 1028 1029 arrow[A_K_HO].name = STR("home"); 1030 arrow[A_K_HO].key = T_kh; 1031 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG; 1032 arrow[A_K_HO].type = XK_CMD; 1033 1034 arrow[A_K_EN].name = STR("end"); 1035 arrow[A_K_EN].key = T_at7; 1036 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END; 1037 arrow[A_K_EN].type = XK_CMD; 1038 1039 arrow[A_K_DE].name = STR("delete"); 1040 arrow[A_K_DE].key = T_kD; 1041 arrow[A_K_DE].fun.cmd = ED_DELETE_NEXT_CHAR; 1042 arrow[A_K_DE].type = XK_CMD; 1043} 1044 1045 1046/* terminal_reset_arrow(): 1047 * Reset arrow key bindings 1048 */ 1049private void 1050terminal_reset_arrow(EditLine *el) 1051{ 1052 funckey_t *arrow = el->el_terminal.t_fkey; 1053 static const Char strA[] = {033, '[', 'A', '\0'}; 1054 static const Char strB[] = {033, '[', 'B', '\0'}; 1055 static const Char strC[] = {033, '[', 'C', '\0'}; 1056 static const Char strD[] = {033, '[', 'D', '\0'}; 1057 static const Char strH[] = {033, '[', 'H', '\0'}; 1058 static const Char strF[] = {033, '[', 'F', '\0'}; 1059 static const Char stOA[] = {033, 'O', 'A', '\0'}; 1060 static const Char stOB[] = {033, 'O', 'B', '\0'}; 1061 static const Char stOC[] = {033, 'O', 'C', '\0'}; 1062 static const Char stOD[] = {033, 'O', 'D', '\0'}; 1063 static const Char stOH[] = {033, 'O', 'H', '\0'}; 1064 static const Char stOF[] = {033, 'O', 'F', '\0'}; 1065 1066 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1067 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1068 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1069 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1070 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1071 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1072 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1073 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1074 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1075 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1076 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1077 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1078 1079 if (el->el_map.type != MAP_VI) 1080 return; 1081 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1082 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1083 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1084 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1085 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1086 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1087 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1088 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1089 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1090 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1091 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1092 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1093} 1094 1095 1096/* terminal_set_arrow(): 1097 * Set an arrow key binding 1098 */ 1099protected int 1100terminal_set_arrow(EditLine *el, const Char *name, keymacro_value_t *fun, 1101 int type) 1102{ 1103 funckey_t *arrow = el->el_terminal.t_fkey; 1104 int i; 1105 1106 for (i = 0; i < A_K_NKEYS; i++) 1107 if (Strcmp(name, arrow[i].name) == 0) { 1108 arrow[i].fun = *fun; 1109 arrow[i].type = type; 1110 return 0; 1111 } 1112 return -1; 1113} 1114 1115 1116/* terminal_clear_arrow(): 1117 * Clear an arrow key binding 1118 */ 1119protected int 1120terminal_clear_arrow(EditLine *el, const Char *name) 1121{ 1122 funckey_t *arrow = el->el_terminal.t_fkey; 1123 int i; 1124 1125 for (i = 0; i < A_K_NKEYS; i++) 1126 if (Strcmp(name, arrow[i].name) == 0) { 1127 arrow[i].type = XK_NOD; 1128 return 0; 1129 } 1130 return -1; 1131} 1132 1133 1134/* terminal_print_arrow(): 1135 * Print the arrow key bindings 1136 */ 1137protected void 1138terminal_print_arrow(EditLine *el, const Char *name) 1139{ 1140 int i; 1141 funckey_t *arrow = el->el_terminal.t_fkey; 1142 1143 for (i = 0; i < A_K_NKEYS; i++) 1144 if (*name == '\0' || Strcmp(name, arrow[i].name) == 0) 1145 if (arrow[i].type != XK_NOD) 1146 keymacro_kprint(el, arrow[i].name, 1147 &arrow[i].fun, arrow[i].type); 1148} 1149 1150 1151/* terminal_bind_arrow(): 1152 * Bind the arrow keys 1153 */ 1154protected void 1155terminal_bind_arrow(EditLine *el) 1156{ 1157 el_action_t *map; 1158 const el_action_t *dmap; 1159 int i, j; 1160 char *p; 1161 funckey_t *arrow = el->el_terminal.t_fkey; 1162 1163 /* Check if the components needed are initialized */ 1164 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL) 1165 return; 1166 1167 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key; 1168 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs; 1169 1170 terminal_reset_arrow(el); 1171 1172 for (i = 0; i < A_K_NKEYS; i++) { 1173 Char wt_str[VISUAL_WIDTH_MAX]; 1174 Char *px; 1175 size_t n; 1176 1177 p = el->el_terminal.t_str[arrow[i].key]; 1178 if (!p || !*p) 1179 continue; 1180 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n) 1181 wt_str[n] = p[n]; 1182 while (n < VISUAL_WIDTH_MAX) 1183 wt_str[n++] = '\0'; 1184 px = wt_str; 1185 j = (unsigned char) *p; 1186 /* 1187 * Assign the arrow keys only if: 1188 * 1189 * 1. They are multi-character arrow keys and the user 1190 * has not re-assigned the leading character, or 1191 * has re-assigned the leading character to be 1192 * ED_SEQUENCE_LEAD_IN 1193 * 2. They are single arrow keys pointing to an 1194 * unassigned key. 1195 */ 1196 if (arrow[i].type == XK_NOD) 1197 keymacro_clear(el, map, px); 1198 else { 1199 if (p[1] && (dmap[j] == map[j] || 1200 map[j] == ED_SEQUENCE_LEAD_IN)) { 1201 keymacro_add(el, px, &arrow[i].fun, 1202 arrow[i].type); 1203 map[j] = ED_SEQUENCE_LEAD_IN; 1204 } else if (map[j] == ED_UNASSIGNED) { 1205 keymacro_clear(el, map, px); 1206 if (arrow[i].type == XK_CMD) 1207 map[j] = arrow[i].fun.cmd; 1208 else 1209 keymacro_add(el, px, &arrow[i].fun, 1210 arrow[i].type); 1211 } 1212 } 1213 } 1214} 1215 1216/* terminal_putc(): 1217 * Add a character 1218 */ 1219private int 1220terminal_putc(int c) 1221{ 1222 if (terminal_outfile == NULL) 1223 return -1; 1224 return fputc(c, terminal_outfile); 1225} 1226 1227private void 1228terminal_tputs(EditLine *el, const char *cap, int affcnt) 1229{ 1230#ifdef _REENTRANT 1231 pthread_mutex_lock(&terminal_mutex); 1232#endif 1233 terminal_outfile = el->el_outfile; 1234 (void)tputs(cap, affcnt, terminal_putc); 1235#ifdef _REENTRANT 1236 pthread_mutex_unlock(&terminal_mutex); 1237#endif 1238} 1239 1240/* terminal__putc(): 1241 * Add a character 1242 */ 1243protected int 1244terminal__putc(EditLine *el, Int c) 1245{ 1246 char buf[MB_LEN_MAX +1]; 1247 ssize_t i; 1248 if (c == (Int)MB_FILL_CHAR) 1249 return 0; 1250 i = ct_encode_char(buf, (size_t)MB_LEN_MAX, c); 1251 if (i <= 0) 1252 return (int)i; 1253 buf[i] = '\0'; 1254 return fputs(buf, el->el_outfile); 1255} 1256 1257/* terminal__flush(): 1258 * Flush output 1259 */ 1260protected void 1261terminal__flush(EditLine *el) 1262{ 1263 1264 (void) fflush(el->el_outfile); 1265} 1266 1267/* terminal_writec(): 1268 * Write the given character out, in a human readable form 1269 */ 1270protected void 1271terminal_writec(EditLine *el, Int c) 1272{ 1273 Char visbuf[VISUAL_WIDTH_MAX +1]; 1274 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c); 1275 if (vcnt < 0) 1276 vcnt = 0; 1277 visbuf[vcnt] = '\0'; 1278 terminal_overwrite(el, visbuf, (size_t)vcnt); 1279 terminal__flush(el); 1280} 1281 1282 1283/* terminal_telltc(): 1284 * Print the current termcap characteristics 1285 */ 1286protected int 1287/*ARGSUSED*/ 1288terminal_telltc(EditLine *el, int argc __attribute__((__unused__)), 1289 const Char **argv __attribute__((__unused__))) 1290{ 1291 const struct termcapstr *t; 1292 char **ts; 1293 1294 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n"); 1295 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n"); 1296 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n", 1297 Val(T_co), Val(T_li)); 1298 (void) fprintf(el->el_outfile, 1299 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no"); 1300 (void) fprintf(el->el_outfile, 1301 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not "); 1302 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n", 1303 EL_HAS_AUTO_MARGINS ? "has" : "does not have"); 1304 if (EL_HAS_AUTO_MARGINS) 1305 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n", 1306 EL_HAS_MAGIC_MARGINS ? "has" : "does not have"); 1307 1308 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) { 1309 const char *ub; 1310 if (*ts && **ts) { 1311 ub = ct_encode_string(ct_visual_string( 1312 ct_decode_string(*ts, &el->el_scratch)), 1313 &el->el_scratch); 1314 } else { 1315 ub = "(empty)"; 1316 } 1317 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n", 1318 t->long_name, t->name, ub); 1319 } 1320 (void) fputc('\n', el->el_outfile); 1321 return 0; 1322} 1323 1324 1325/* terminal_settc(): 1326 * Change the current terminal characteristics 1327 */ 1328protected int 1329/*ARGSUSED*/ 1330terminal_settc(EditLine *el, int argc __attribute__((__unused__)), 1331 const Char **argv) 1332{ 1333 const struct termcapstr *ts; 1334 const struct termcapval *tv; 1335 char what[8], how[8]; 1336 1337 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1338 return -1; 1339 1340 strncpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what)); 1341 what[sizeof(what) - 1] = '\0'; 1342 strncpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how)); 1343 how[sizeof(how) - 1] = '\0'; 1344 1345 /* 1346 * Do the strings first 1347 */ 1348 for (ts = tstr; ts->name != NULL; ts++) 1349 if (strcmp(ts->name, what) == 0) 1350 break; 1351 1352 if (ts->name != NULL) { 1353 terminal_alloc(el, ts, how); 1354 terminal_setflags(el); 1355 return 0; 1356 } 1357 /* 1358 * Do the numeric ones second 1359 */ 1360 for (tv = tval; tv->name != NULL; tv++) 1361 if (strcmp(tv->name, what) == 0) 1362 break; 1363 1364 if (tv->name != NULL) 1365 return -1; 1366 1367 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1368 tv == &tval[T_am] || tv == &tval[T_xn]) { 1369 if (strcmp(how, "yes") == 0) 1370 el->el_terminal.t_val[tv - tval] = 1; 1371 else if (strcmp(how, "no") == 0) 1372 el->el_terminal.t_val[tv - tval] = 0; 1373 else { 1374 (void) fprintf(el->el_errfile, 1375 "" FSTR ": Bad value `%s'.\n", argv[0], how); 1376 return -1; 1377 } 1378 terminal_setflags(el); 1379 if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1) 1380 return -1; 1381 return 0; 1382 } else { 1383 long i; 1384 char *ep; 1385 1386 i = strtol(how, &ep, 10); 1387 if (*ep != '\0') { 1388 (void) fprintf(el->el_errfile, 1389 "" FSTR ": Bad value `%s'.\n", argv[0], how); 1390 return -1; 1391 } 1392 el->el_terminal.t_val[tv - tval] = (int) i; 1393 el->el_terminal.t_size.v = Val(T_co); 1394 el->el_terminal.t_size.h = Val(T_li); 1395 if (tv == &tval[T_co] || tv == &tval[T_li]) 1396 if (terminal_change_size(el, Val(T_li), Val(T_co)) 1397 == -1) 1398 return -1; 1399 return 0; 1400 } 1401} 1402 1403 1404/* terminal_gettc(): 1405 * Get the current terminal characteristics 1406 */ 1407protected int 1408/*ARGSUSED*/ 1409terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv) 1410{ 1411 const struct termcapstr *ts; 1412 const struct termcapval *tv; 1413 char *what; 1414 void *how; 1415 1416 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1417 return -1; 1418 1419 what = argv[1]; 1420 how = argv[2]; 1421 1422 /* 1423 * Do the strings first 1424 */ 1425 for (ts = tstr; ts->name != NULL; ts++) 1426 if (strcmp(ts->name, what) == 0) 1427 break; 1428 1429 if (ts->name != NULL) { 1430 *(char **)how = el->el_terminal.t_str[ts - tstr]; 1431 return 0; 1432 } 1433 /* 1434 * Do the numeric ones second 1435 */ 1436 for (tv = tval; tv->name != NULL; tv++) 1437 if (strcmp(tv->name, what) == 0) 1438 break; 1439 1440 if (tv->name == NULL) 1441 return -1; 1442 1443 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1444 tv == &tval[T_am] || tv == &tval[T_xn]) { 1445 static char yes[] = "yes"; 1446 static char no[] = "no"; 1447 if (el->el_terminal.t_val[tv - tval]) 1448 *(char **)how = yes; 1449 else 1450 *(char **)how = no; 1451 return 0; 1452 } else { 1453 *(int *)how = el->el_terminal.t_val[tv - tval]; 1454 return 0; 1455 } 1456} 1457 1458/* terminal_echotc(): 1459 * Print the termcap string out with variable substitution 1460 */ 1461protected int 1462/*ARGSUSED*/ 1463terminal_echotc(EditLine *el, int argc __attribute__((__unused__)), 1464 const Char **argv) 1465{ 1466 char *cap, *scap; 1467 Char *ep; 1468 int arg_need, arg_cols, arg_rows; 1469 int verbose = 0, silent = 0; 1470 char *area; 1471 static const char fmts[] = "%s\n", fmtd[] = "%d\n"; 1472 const struct termcapstr *t; 1473 char buf[TC_BUFSIZE]; 1474 long i; 1475 1476 area = buf; 1477 1478 if (argv == NULL || argv[1] == NULL) 1479 return -1; 1480 argv++; 1481 1482 if (argv[0][0] == '-') { 1483 switch (argv[0][1]) { 1484 case 'v': 1485 verbose = 1; 1486 break; 1487 case 's': 1488 silent = 1; 1489 break; 1490 default: 1491 /* stderror(ERR_NAME | ERR_TCUSAGE); */ 1492 break; 1493 } 1494 argv++; 1495 } 1496 if (!*argv || *argv[0] == '\0') 1497 return 0; 1498 if (Strcmp(*argv, STR("tabs")) == 0) { 1499 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no"); 1500 return 0; 1501 } else if (Strcmp(*argv, STR("meta")) == 0) { 1502 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no"); 1503 return 0; 1504 } else if (Strcmp(*argv, STR("xn")) == 0) { 1505 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ? 1506 "yes" : "no"); 1507 return 0; 1508 } else if (Strcmp(*argv, STR("am")) == 0) { 1509 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ? 1510 "yes" : "no"); 1511 return 0; 1512 } else if (Strcmp(*argv, STR("baud")) == 0) { 1513 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed); 1514 return 0; 1515 } else if (Strcmp(*argv, STR("rows")) == 0 || 1516 Strcmp(*argv, STR("lines")) == 0) { 1517 (void) fprintf(el->el_outfile, fmtd, Val(T_li)); 1518 return 0; 1519 } else if (Strcmp(*argv, STR("cols")) == 0) { 1520 (void) fprintf(el->el_outfile, fmtd, Val(T_co)); 1521 return 0; 1522 } 1523 /* 1524 * Try to use our local definition first 1525 */ 1526 scap = NULL; 1527 for (t = tstr; t->name != NULL; t++) 1528 if (strcmp(t->name, 1529 ct_encode_string(*argv, &el->el_scratch)) == 0) { 1530 scap = el->el_terminal.t_str[t - tstr]; 1531 break; 1532 } 1533 if (t->name == NULL) { 1534 /* XXX: some systems' tgetstr needs non const */ 1535 scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area); 1536 } 1537 if (!scap || scap[0] == '\0') { 1538 if (!silent) 1539 (void) fprintf(el->el_errfile, 1540 "echotc: Termcap parameter `" FSTR "' not found.\n", 1541 *argv); 1542 return -1; 1543 } 1544 /* 1545 * Count home many values we need for this capability. 1546 */ 1547 for (cap = scap, arg_need = 0; *cap; cap++) 1548 if (*cap == '%') 1549 switch (*++cap) { 1550 case 'd': 1551 case '2': 1552 case '3': 1553 case '.': 1554 case '+': 1555 arg_need++; 1556 break; 1557 case '%': 1558 case '>': 1559 case 'i': 1560 case 'r': 1561 case 'n': 1562 case 'B': 1563 case 'D': 1564 break; 1565 default: 1566 /* 1567 * hpux has lot's of them... 1568 */ 1569 if (verbose) 1570 (void) fprintf(el->el_errfile, 1571 "echotc: Warning: unknown termcap %% `%c'.\n", 1572 *cap); 1573 /* This is bad, but I won't complain */ 1574 break; 1575 } 1576 1577 switch (arg_need) { 1578 case 0: 1579 argv++; 1580 if (*argv && *argv[0]) { 1581 if (!silent) 1582 (void) fprintf(el->el_errfile, 1583 "echotc: Warning: Extra argument `" FSTR "'.\n", 1584 *argv); 1585 return -1; 1586 } 1587 terminal_tputs(el, scap, 1); 1588 break; 1589 case 1: 1590 argv++; 1591 if (!*argv || *argv[0] == '\0') { 1592 if (!silent) 1593 (void) fprintf(el->el_errfile, 1594 "echotc: Warning: Missing argument.\n"); 1595 return -1; 1596 } 1597 arg_cols = 0; 1598 i = Strtol(*argv, &ep, 10); 1599 if (*ep != '\0' || i < 0) { 1600 if (!silent) 1601 (void) fprintf(el->el_errfile, 1602 "echotc: Bad value `" FSTR "' for rows.\n", 1603 *argv); 1604 return -1; 1605 } 1606 arg_rows = (int) i; 1607 argv++; 1608 if (*argv && *argv[0]) { 1609 if (!silent) 1610 (void) fprintf(el->el_errfile, 1611 "echotc: Warning: Extra argument `" FSTR 1612 "'.\n", *argv); 1613 return -1; 1614 } 1615 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1); 1616 break; 1617 default: 1618 /* This is wrong, but I will ignore it... */ 1619 if (verbose) 1620 (void) fprintf(el->el_errfile, 1621 "echotc: Warning: Too many required arguments (%d).\n", 1622 arg_need); 1623 /* FALLTHROUGH */ 1624 case 2: 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 = Strtol(*argv, &ep, 10); 1633 if (*ep != '\0' || i < 0) { 1634 if (!silent) 1635 (void) fprintf(el->el_errfile, 1636 "echotc: Bad value `" FSTR "' for cols.\n", 1637 *argv); 1638 return -1; 1639 } 1640 arg_cols = (int) i; 1641 argv++; 1642 if (!*argv || *argv[0] == '\0') { 1643 if (!silent) 1644 (void) fprintf(el->el_errfile, 1645 "echotc: Warning: Missing argument.\n"); 1646 return -1; 1647 } 1648 i = Strtol(*argv, &ep, 10); 1649 if (*ep != '\0' || i < 0) { 1650 if (!silent) 1651 (void) fprintf(el->el_errfile, 1652 "echotc: Bad value `" FSTR "' for rows.\n", 1653 *argv); 1654 return -1; 1655 } 1656 arg_rows = (int) i; 1657 if (*ep != '\0') { 1658 if (!silent) 1659 (void) fprintf(el->el_errfile, 1660 "echotc: Bad value `" FSTR "'.\n", *argv); 1661 return -1; 1662 } 1663 argv++; 1664 if (*argv && *argv[0]) { 1665 if (!silent) 1666 (void) fprintf(el->el_errfile, 1667 "echotc: Warning: Extra argument `" FSTR 1668 "'.\n", *argv); 1669 return -1; 1670 } 1671 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows); 1672 break; 1673 } 1674 return 0; 1675} 1676