terminal.c revision 1.23
1/* $NetBSD: terminal.c,v 1.23 2016/03/02 19:24:20 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 1.23 2016/03/02 19:24:20 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 77/* 78 * IMPORTANT NOTE: these routines are allowed to look at the current screen 79 * and the current position assuming that it is correct. If this is not 80 * true, then the update will be WRONG! This is (should be) a valid 81 * assumption... 82 */ 83 84#define TC_BUFSIZE ((size_t)2048) 85 86#define GoodStr(a) (el->el_terminal.t_str[a] != NULL && \ 87 el->el_terminal.t_str[a][0] != '\0') 88#define Str(a) el->el_terminal.t_str[a] 89#define Val(a) el->el_terminal.t_val[a] 90 91private const struct termcapstr { 92 const char *name; 93 const char *long_name; 94} tstr[] = { 95#define T_al 0 96 { "al", "add new blank line" }, 97#define T_bl 1 98 { "bl", "audible bell" }, 99#define T_cd 2 100 { "cd", "clear to bottom" }, 101#define T_ce 3 102 { "ce", "clear to end of line" }, 103#define T_ch 4 104 { "ch", "cursor to horiz pos" }, 105#define T_cl 5 106 { "cl", "clear screen" }, 107#define T_dc 6 108 { "dc", "delete a character" }, 109#define T_dl 7 110 { "dl", "delete a line" }, 111#define T_dm 8 112 { "dm", "start delete mode" }, 113#define T_ed 9 114 { "ed", "end delete mode" }, 115#define T_ei 10 116 { "ei", "end insert mode" }, 117#define T_fs 11 118 { "fs", "cursor from status line" }, 119#define T_ho 12 120 { "ho", "home cursor" }, 121#define T_ic 13 122 { "ic", "insert character" }, 123#define T_im 14 124 { "im", "start insert mode" }, 125#define T_ip 15 126 { "ip", "insert padding" }, 127#define T_kd 16 128 { "kd", "sends cursor down" }, 129#define T_kl 17 130 { "kl", "sends cursor left" }, 131#define T_kr 18 132 { "kr", "sends cursor right" }, 133#define T_ku 19 134 { "ku", "sends cursor up" }, 135#define T_md 20 136 { "md", "begin bold" }, 137#define T_me 21 138 { "me", "end attributes" }, 139#define T_nd 22 140 { "nd", "non destructive space" }, 141#define T_se 23 142 { "se", "end standout" }, 143#define T_so 24 144 { "so", "begin standout" }, 145#define T_ts 25 146 { "ts", "cursor to status line" }, 147#define T_up 26 148 { "up", "cursor up one" }, 149#define T_us 27 150 { "us", "begin underline" }, 151#define T_ue 28 152 { "ue", "end underline" }, 153#define T_vb 29 154 { "vb", "visible bell" }, 155#define T_DC 30 156 { "DC", "delete multiple chars" }, 157#define T_DO 31 158 { "DO", "cursor down multiple" }, 159#define T_IC 32 160 { "IC", "insert multiple chars" }, 161#define T_LE 33 162 { "LE", "cursor left multiple" }, 163#define T_RI 34 164 { "RI", "cursor right multiple" }, 165#define T_UP 35 166 { "UP", "cursor up multiple" }, 167#define T_kh 36 168 { "kh", "send cursor home" }, 169#define T_at7 37 170 { "@7", "send cursor end" }, 171#define T_kD 38 172 { "kD", "send cursor delete" }, 173#define T_str 39 174 { NULL, NULL } 175}; 176 177private const struct termcapval { 178 const char *name; 179 const char *long_name; 180} tval[] = { 181#define T_am 0 182 { "am", "has automatic margins" }, 183#define T_pt 1 184 { "pt", "has physical tabs" }, 185#define T_li 2 186 { "li", "Number of lines" }, 187#define T_co 3 188 { "co", "Number of columns" }, 189#define T_km 4 190 { "km", "Has meta key" }, 191#define T_xt 5 192 { "xt", "Tab chars destructive" }, 193#define T_xn 6 194 { "xn", "newline ignored at right margin" }, 195#define T_MT 7 196 { "MT", "Has meta key" }, /* XXX? */ 197#define T_val 8 198 { NULL, NULL, } 199}; 200/* do two or more of the attributes use me */ 201 202private void terminal_setflags(EditLine *); 203private int terminal_rebuffer_display(EditLine *); 204private void terminal_free_display(EditLine *); 205private int terminal_alloc_display(EditLine *); 206private void terminal_alloc(EditLine *, const struct termcapstr *, 207 const char *); 208private void terminal_init_arrow(EditLine *); 209private void terminal_reset_arrow(EditLine *); 210private int terminal_putc(int); 211private void terminal_tputs(EditLine *, const char *, int); 212 213#ifdef _REENTRANT 214private pthread_mutex_t terminal_mutex = PTHREAD_MUTEX_INITIALIZER; 215#endif 216private FILE *terminal_outfile = NULL; 217 218 219/* terminal_setflags(): 220 * Set the terminal capability flags 221 */ 222private void 223terminal_setflags(EditLine *el) 224{ 225 EL_FLAGS = 0; 226 if (el->el_tty.t_tabs) 227 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0; 228 229 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0; 230 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0; 231 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0; 232 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ? 233 TERM_CAN_INSERT : 0; 234 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0; 235 EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0; 236 EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0; 237 238 if (GoodStr(T_me) && GoodStr(T_ue)) 239 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ? 240 TERM_CAN_ME : 0; 241 else 242 EL_FLAGS &= ~TERM_CAN_ME; 243 if (GoodStr(T_me) && GoodStr(T_se)) 244 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ? 245 TERM_CAN_ME : 0; 246 247 248#ifdef DEBUG_SCREEN 249 if (!EL_CAN_UP) { 250 (void) fprintf(el->el_errfile, 251 "WARNING: Your terminal cannot move up.\n"); 252 (void) fprintf(el->el_errfile, 253 "Editing may be odd for long lines.\n"); 254 } 255 if (!EL_CAN_CEOL) 256 (void) fprintf(el->el_errfile, "no clear EOL capability.\n"); 257 if (!EL_CAN_DELETE) 258 (void) fprintf(el->el_errfile, "no delete char capability.\n"); 259 if (!EL_CAN_INSERT) 260 (void) fprintf(el->el_errfile, "no insert char capability.\n"); 261#endif /* DEBUG_SCREEN */ 262} 263 264/* terminal_init(): 265 * Initialize the terminal stuff 266 */ 267protected int 268terminal_init(EditLine *el) 269{ 270 271 el->el_terminal.t_buf = el_malloc(TC_BUFSIZE * 272 sizeof(*el->el_terminal.t_buf)); 273 if (el->el_terminal.t_buf == NULL) 274 goto fail1; 275 el->el_terminal.t_cap = el_malloc(TC_BUFSIZE * 276 sizeof(*el->el_terminal.t_cap)); 277 if (el->el_terminal.t_cap == NULL) 278 goto fail2; 279 el->el_terminal.t_fkey = el_malloc(A_K_NKEYS * 280 sizeof(*el->el_terminal.t_fkey)); 281 if (el->el_terminal.t_fkey == NULL) 282 goto fail3; 283 el->el_terminal.t_loc = 0; 284 el->el_terminal.t_str = el_malloc(T_str * 285 sizeof(*el->el_terminal.t_str)); 286 if (el->el_terminal.t_str == NULL) 287 goto fail4; 288 (void) memset(el->el_terminal.t_str, 0, T_str * 289 sizeof(*el->el_terminal.t_str)); 290 el->el_terminal.t_val = el_malloc(T_val * 291 sizeof(*el->el_terminal.t_val)); 292 if (el->el_terminal.t_val == NULL) 293 goto fail5; 294 (void) memset(el->el_terminal.t_val, 0, T_val * 295 sizeof(*el->el_terminal.t_val)); 296 (void) terminal_set(el, NULL); 297 terminal_init_arrow(el); 298 return 0; 299fail5: 300 free(el->el_terminal.t_str); 301 el->el_terminal.t_str = NULL; 302fail4: 303 free(el->el_terminal.t_fkey); 304 el->el_terminal.t_fkey = NULL; 305fail3: 306 free(el->el_terminal.t_cap); 307 el->el_terminal.t_cap = NULL; 308fail2: 309 free(el->el_terminal.t_buf); 310 el->el_terminal.t_buf = NULL; 311fail1: 312 return -1; 313} 314 315/* terminal_end(): 316 * Clean up the terminal stuff 317 */ 318protected void 319terminal_end(EditLine *el) 320{ 321 322 el_free(el->el_terminal.t_buf); 323 el->el_terminal.t_buf = NULL; 324 el_free(el->el_terminal.t_cap); 325 el->el_terminal.t_cap = NULL; 326 el->el_terminal.t_loc = 0; 327 el_free(el->el_terminal.t_str); 328 el->el_terminal.t_str = NULL; 329 el_free(el->el_terminal.t_val); 330 el->el_terminal.t_val = NULL; 331 el_free(el->el_terminal.t_fkey); 332 el->el_terminal.t_fkey = NULL; 333 terminal_free_display(el); 334} 335 336 337/* terminal_alloc(): 338 * Maintain a string pool for termcap strings 339 */ 340private void 341terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap) 342{ 343 char termbuf[TC_BUFSIZE]; 344 size_t tlen, clen; 345 char **tlist = el->el_terminal.t_str; 346 char **tmp, **str = &tlist[t - tstr]; 347 348 (void) memset(termbuf, 0, sizeof(termbuf)); 349 if (cap == NULL || *cap == '\0') { 350 *str = NULL; 351 return; 352 } else 353 clen = strlen(cap); 354 355 tlen = *str == NULL ? 0 : strlen(*str); 356 357 /* 358 * New string is shorter; no need to allocate space 359 */ 360 if (clen <= tlen) { 361 if (*str) 362 (void) strcpy(*str, cap); /* XXX strcpy is safe */ 363 return; 364 } 365 /* 366 * New string is longer; see if we have enough space to append 367 */ 368 if (el->el_terminal.t_loc + 3 < TC_BUFSIZE) { 369 /* XXX strcpy is safe */ 370 (void) strcpy(*str = &el->el_terminal.t_buf[ 371 el->el_terminal.t_loc], cap); 372 el->el_terminal.t_loc += clen + 1; /* one for \0 */ 373 return; 374 } 375 /* 376 * Compact our buffer; no need to check compaction, cause we know it 377 * fits... 378 */ 379 tlen = 0; 380 for (tmp = tlist; tmp < &tlist[T_str]; tmp++) 381 if (*tmp != NULL && *tmp != *str) { 382 char *ptr; 383 384 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++) 385 continue; 386 termbuf[tlen++] = '\0'; 387 } 388 memcpy(el->el_terminal.t_buf, termbuf, TC_BUFSIZE); 389 el->el_terminal.t_loc = tlen; 390 if (el->el_terminal.t_loc + 3 >= TC_BUFSIZE) { 391 (void) fprintf(el->el_errfile, 392 "Out of termcap string space.\n"); 393 return; 394 } 395 /* XXX strcpy is safe */ 396 (void) strcpy(*str = &el->el_terminal.t_buf[el->el_terminal.t_loc], 397 cap); 398 el->el_terminal.t_loc += (size_t)clen + 1; /* one for \0 */ 399 return; 400} 401 402 403/* terminal_rebuffer_display(): 404 * Rebuffer the display after the screen changed size 405 */ 406private int 407terminal_rebuffer_display(EditLine *el) 408{ 409 coord_t *c = &el->el_terminal.t_size; 410 411 terminal_free_display(el); 412 413 c->h = Val(T_co); 414 c->v = Val(T_li); 415 416 if (terminal_alloc_display(el) == -1) 417 return -1; 418 return 0; 419} 420 421 422/* terminal_alloc_display(): 423 * Allocate a new display. 424 */ 425private int 426terminal_alloc_display(EditLine *el) 427{ 428 int i; 429 Char **b; 430 coord_t *c = &el->el_terminal.t_size; 431 432 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1)); 433 if (b == NULL) 434 goto done; 435 for (i = 0; i < c->v; i++) { 436 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1)); 437 if (b[i] == NULL) { 438 while (--i >= 0) 439 el_free(b[i]); 440 el_free(b); 441 goto done; 442 } 443 } 444 b[c->v] = NULL; 445 el->el_display = b; 446 447 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1)); 448 if (b == NULL) 449 goto done; 450 for (i = 0; i < c->v; i++) { 451 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1)); 452 if (b[i] == NULL) { 453 while (--i >= 0) 454 el_free(b[i]); 455 el_free(b); 456 goto done; 457 } 458 } 459 b[c->v] = NULL; 460 el->el_vdisplay = b; 461 return 0; 462done: 463 terminal_free_display(el); 464 return -1; 465} 466 467 468/* terminal_free_display(): 469 * Free the display buffers 470 */ 471private void 472terminal_free_display(EditLine *el) 473{ 474 Char **b; 475 Char **bufp; 476 477 b = el->el_display; 478 el->el_display = NULL; 479 if (b != NULL) { 480 for (bufp = b; *bufp != NULL; bufp++) 481 el_free(*bufp); 482 el_free(b); 483 } 484 b = el->el_vdisplay; 485 el->el_vdisplay = NULL; 486 if (b != NULL) { 487 for (bufp = b; *bufp != NULL; bufp++) 488 el_free(*bufp); 489 el_free(b); 490 } 491} 492 493 494/* terminal_move_to_line(): 495 * move to line <where> (first line == 0) 496 * as efficiently as possible 497 */ 498protected void 499terminal_move_to_line(EditLine *el, int where) 500{ 501 int del; 502 503 if (where == el->el_cursor.v) 504 return; 505 506 if (where > el->el_terminal.t_size.v) { 507#ifdef DEBUG_SCREEN 508 (void) fprintf(el->el_errfile, 509 "%s: where is ridiculous: %d\r\n", __func__, where); 510#endif /* DEBUG_SCREEN */ 511 return; 512 } 513 if ((del = where - el->el_cursor.v) > 0) { 514 while (del > 0) { 515 if (EL_HAS_AUTO_MARGINS && 516 el->el_display[el->el_cursor.v][0] != '\0') { 517 size_t h = (size_t) 518 (el->el_terminal.t_size.h - 1); 519#ifdef WIDECHAR 520 for (; h > 0 && 521 el->el_display[el->el_cursor.v][h] == 522 MB_FILL_CHAR; 523 h--) 524 continue; 525#endif 526 /* move without newline */ 527 terminal_move_to_char(el, (int)h); 528 terminal_overwrite(el, &el->el_display 529 [el->el_cursor.v][el->el_cursor.h], 530 (size_t)(el->el_terminal.t_size.h - 531 el->el_cursor.h)); 532 /* updates Cursor */ 533 del--; 534 } else { 535 if ((del > 1) && GoodStr(T_DO)) { 536 terminal_tputs(el, tgoto(Str(T_DO), del, 537 del), del); 538 del = 0; 539 } else { 540 for (; del > 0; del--) 541 terminal__putc(el, '\n'); 542 /* because the \n will become \r\n */ 543 el->el_cursor.h = 0; 544 } 545 } 546 } 547 } else { /* del < 0 */ 548 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up))) 549 terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del); 550 else { 551 if (GoodStr(T_up)) 552 for (; del < 0; del++) 553 terminal_tputs(el, Str(T_up), 1); 554 } 555 } 556 el->el_cursor.v = where;/* now where is here */ 557} 558 559 560/* terminal_move_to_char(): 561 * Move to the character position specified 562 */ 563protected void 564terminal_move_to_char(EditLine *el, int where) 565{ 566 int del, i; 567 568mc_again: 569 if (where == el->el_cursor.h) 570 return; 571 572 if (where > el->el_terminal.t_size.h) { 573#ifdef DEBUG_SCREEN 574 (void) fprintf(el->el_errfile, 575 "%s: where is ridiculous: %d\r\n", __func__, where); 576#endif /* DEBUG_SCREEN */ 577 return; 578 } 579 if (!where) { /* if where is first column */ 580 terminal__putc(el, '\r'); /* do a CR */ 581 el->el_cursor.h = 0; 582 return; 583 } 584 del = where - el->el_cursor.h; 585 586 if ((del < -4 || del > 4) && GoodStr(T_ch)) 587 /* go there directly */ 588 terminal_tputs(el, tgoto(Str(T_ch), where, where), where); 589 else { 590 if (del > 0) { /* moving forward */ 591 if ((del > 4) && GoodStr(T_RI)) 592 terminal_tputs(el, tgoto(Str(T_RI), del, del), 593 del); 594 else { 595 /* if I can do tabs, use them */ 596 if (EL_CAN_TAB) { 597 if ((el->el_cursor.h & 0370) != 598 (where & ~0x7) 599#ifdef WIDECHAR 600 && (el->el_display[ 601 el->el_cursor.v][where & 0370] != 602 MB_FILL_CHAR) 603#endif 604 ) { 605 /* if not within tab stop */ 606 for (i = 607 (el->el_cursor.h & 0370); 608 i < (where & ~0x7); 609 i += 8) 610 terminal__putc(el, 611 '\t'); 612 /* then tab over */ 613 el->el_cursor.h = where & ~0x7; 614 } 615 } 616 /* 617 * it's usually cheaper to just write the 618 * chars, so we do. 619 */ 620 /* 621 * NOTE THAT terminal_overwrite() WILL CHANGE 622 * el->el_cursor.h!!! 623 */ 624 terminal_overwrite(el, &el->el_display[ 625 el->el_cursor.v][el->el_cursor.h], 626 (size_t)(where - el->el_cursor.h)); 627 628 } 629 } else { /* del < 0 := moving backward */ 630 if ((-del > 4) && GoodStr(T_LE)) 631 terminal_tputs(el, tgoto(Str(T_LE), -del, -del), 632 -del); 633 else { /* can't go directly there */ 634 /* 635 * if the "cost" is greater than the "cost" 636 * from col 0 637 */ 638 if (EL_CAN_TAB ? 639 ((unsigned int)-del > 640 (((unsigned int) where >> 3) + 641 (where & 07))) 642 : (-del > where)) { 643 terminal__putc(el, '\r');/* do a CR */ 644 el->el_cursor.h = 0; 645 goto mc_again; /* and try again */ 646 } 647 for (i = 0; i < -del; i++) 648 terminal__putc(el, '\b'); 649 } 650 } 651 } 652 el->el_cursor.h = where; /* now where is here */ 653} 654 655 656/* terminal_overwrite(): 657 * Overstrike num characters 658 * Assumes MB_FILL_CHARs are present to keep the column count correct 659 */ 660protected void 661terminal_overwrite(EditLine *el, const Char *cp, size_t n) 662{ 663 if (n == 0) 664 return; 665 666 if (n > (size_t)el->el_terminal.t_size.h) { 667#ifdef DEBUG_SCREEN 668 (void) fprintf(el->el_errfile, 669 "%s: n is ridiculous: %zu\r\n", __func__, n); 670#endif /* DEBUG_SCREEN */ 671 return; 672 } 673 674 do { 675 /* terminal__putc() ignores any MB_FILL_CHARs */ 676 terminal__putc(el, *cp++); 677 el->el_cursor.h++; 678 } while (--n); 679 680 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */ 681 if (EL_HAS_AUTO_MARGINS) { /* yes */ 682 el->el_cursor.h = 0; 683 el->el_cursor.v++; 684 if (EL_HAS_MAGIC_MARGINS) { 685 /* force the wrap to avoid the "magic" 686 * situation */ 687 Char c; 688 if ((c = el->el_display[el->el_cursor.v] 689 [el->el_cursor.h]) != '\0') { 690 terminal_overwrite(el, &c, (size_t)1); 691#ifdef WIDECHAR 692 while (el->el_display[el->el_cursor.v] 693 [el->el_cursor.h] == MB_FILL_CHAR) 694 el->el_cursor.h++; 695#endif 696 } else { 697 terminal__putc(el, ' '); 698 el->el_cursor.h = 1; 699 } 700 } 701 } else /* no wrap, but cursor stays on screen */ 702 el->el_cursor.h = el->el_terminal.t_size.h - 1; 703 } 704} 705 706 707/* terminal_deletechars(): 708 * Delete num characters 709 */ 710protected void 711terminal_deletechars(EditLine *el, int num) 712{ 713 if (num <= 0) 714 return; 715 716 if (!EL_CAN_DELETE) { 717#ifdef DEBUG_EDIT 718 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n"); 719#endif /* DEBUG_EDIT */ 720 return; 721 } 722 if (num > el->el_terminal.t_size.h) { 723#ifdef DEBUG_SCREEN 724 (void) fprintf(el->el_errfile, 725 "%s: num is ridiculous: %d\r\n", __func__, num); 726#endif /* DEBUG_SCREEN */ 727 return; 728 } 729 if (GoodStr(T_DC)) /* if I have multiple delete */ 730 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more 731 * expen. */ 732 terminal_tputs(el, tgoto(Str(T_DC), num, num), num); 733 return; 734 } 735 if (GoodStr(T_dm)) /* if I have delete mode */ 736 terminal_tputs(el, Str(T_dm), 1); 737 738 if (GoodStr(T_dc)) /* else do one at a time */ 739 while (num--) 740 terminal_tputs(el, Str(T_dc), 1); 741 742 if (GoodStr(T_ed)) /* if I have delete mode */ 743 terminal_tputs(el, Str(T_ed), 1); 744} 745 746 747/* terminal_insertwrite(): 748 * Puts terminal in insert character mode or inserts num 749 * characters in the line 750 * Assumes MB_FILL_CHARs are present to keep column count correct 751 */ 752protected void 753terminal_insertwrite(EditLine *el, Char *cp, int num) 754{ 755 if (num <= 0) 756 return; 757 if (!EL_CAN_INSERT) { 758#ifdef DEBUG_EDIT 759 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n"); 760#endif /* DEBUG_EDIT */ 761 return; 762 } 763 if (num > el->el_terminal.t_size.h) { 764#ifdef DEBUG_SCREEN 765 (void) fprintf(el->el_errfile, 766 "%s: num is ridiculous: %d\r\n", __func__, num); 767#endif /* DEBUG_SCREEN */ 768 return; 769 } 770 if (GoodStr(T_IC)) /* if I have multiple insert */ 771 if ((num > 1) || !GoodStr(T_ic)) { 772 /* if ic would be more expensive */ 773 terminal_tputs(el, tgoto(Str(T_IC), num, num), num); 774 terminal_overwrite(el, cp, (size_t)num); 775 /* this updates el_cursor.h */ 776 return; 777 } 778 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */ 779 terminal_tputs(el, Str(T_im), 1); 780 781 el->el_cursor.h += num; 782 do 783 terminal__putc(el, *cp++); 784 while (--num); 785 786 if (GoodStr(T_ip)) /* have to make num chars insert */ 787 terminal_tputs(el, Str(T_ip), 1); 788 789 terminal_tputs(el, Str(T_ei), 1); 790 return; 791 } 792 do { 793 if (GoodStr(T_ic)) /* have to make num chars insert */ 794 terminal_tputs(el, Str(T_ic), 1); 795 796 terminal__putc(el, *cp++); 797 798 el->el_cursor.h++; 799 800 if (GoodStr(T_ip)) /* have to make num chars insert */ 801 terminal_tputs(el, Str(T_ip), 1); 802 /* pad the inserted char */ 803 804 } while (--num); 805} 806 807 808/* terminal_clear_EOL(): 809 * clear to end of line. There are num characters to clear 810 */ 811protected void 812terminal_clear_EOL(EditLine *el, int num) 813{ 814 int i; 815 816 if (EL_CAN_CEOL && GoodStr(T_ce)) 817 terminal_tputs(el, Str(T_ce), 1); 818 else { 819 for (i = 0; i < num; i++) 820 terminal__putc(el, ' '); 821 el->el_cursor.h += num; /* have written num spaces */ 822 } 823} 824 825 826/* terminal_clear_screen(): 827 * Clear the screen 828 */ 829protected void 830terminal_clear_screen(EditLine *el) 831{ /* clear the whole screen and home */ 832 833 if (GoodStr(T_cl)) 834 /* send the clear screen code */ 835 terminal_tputs(el, Str(T_cl), Val(T_li)); 836 else if (GoodStr(T_ho) && GoodStr(T_cd)) { 837 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */ 838 /* clear to bottom of screen */ 839 terminal_tputs(el, Str(T_cd), Val(T_li)); 840 } else { 841 terminal__putc(el, '\r'); 842 terminal__putc(el, '\n'); 843 } 844} 845 846 847/* terminal_beep(): 848 * Beep the way the terminal wants us 849 */ 850protected void 851terminal_beep(EditLine *el) 852{ 853 if (GoodStr(T_bl)) 854 /* what termcap says we should use */ 855 terminal_tputs(el, Str(T_bl), 1); 856 else 857 terminal__putc(el, '\007'); /* an ASCII bell; ^G */ 858} 859 860 861protected void 862terminal_get(EditLine *el, const char **term) 863{ 864 *term = el->el_terminal.t_name; 865} 866 867 868/* terminal_set(): 869 * Read in the terminal capabilities from the requested terminal 870 */ 871protected int 872terminal_set(EditLine *el, const char *term) 873{ 874 int i; 875 char buf[TC_BUFSIZE]; 876 char *area; 877 const struct termcapstr *t; 878 sigset_t oset, nset; 879 int lins, cols; 880 881 (void) sigemptyset(&nset); 882 (void) sigaddset(&nset, SIGWINCH); 883 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 884 885 area = buf; 886 887 888 if (term == NULL) 889 term = getenv("TERM"); 890 891 if (!term || !term[0]) 892 term = "dumb"; 893 894 if (strcmp(term, "emacs") == 0) 895 el->el_flags |= EDIT_DISABLED; 896 897 (void) memset(el->el_terminal.t_cap, 0, TC_BUFSIZE); 898 899 i = tgetent(el->el_terminal.t_cap, term); 900 901 if (i <= 0) { 902 if (i == -1) 903 (void) fprintf(el->el_errfile, 904 "Cannot read termcap database;\n"); 905 else if (i == 0) 906 (void) fprintf(el->el_errfile, 907 "No entry for terminal type \"%s\";\n", term); 908 (void) fprintf(el->el_errfile, 909 "using dumb terminal settings.\n"); 910 Val(T_co) = 80; /* do a dumb terminal */ 911 Val(T_pt) = Val(T_km) = Val(T_li) = 0; 912 Val(T_xt) = Val(T_MT); 913 for (t = tstr; t->name != NULL; t++) 914 terminal_alloc(el, t, NULL); 915 } else { 916 /* auto/magic margins */ 917 Val(T_am) = tgetflag("am"); 918 Val(T_xn) = tgetflag("xn"); 919 /* Can we tab */ 920 Val(T_pt) = tgetflag("pt"); 921 Val(T_xt) = tgetflag("xt"); 922 /* do we have a meta? */ 923 Val(T_km) = tgetflag("km"); 924 Val(T_MT) = tgetflag("MT"); 925 /* Get the size */ 926 Val(T_co) = tgetnum("co"); 927 Val(T_li) = tgetnum("li"); 928 for (t = tstr; t->name != NULL; t++) { 929 /* XXX: some systems' tgetstr needs non const */ 930 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name), 931 &area)); 932 } 933 } 934 935 if (Val(T_co) < 2) 936 Val(T_co) = 80; /* just in case */ 937 if (Val(T_li) < 1) 938 Val(T_li) = 24; 939 940 el->el_terminal.t_size.v = Val(T_co); 941 el->el_terminal.t_size.h = Val(T_li); 942 943 terminal_setflags(el); 944 945 /* get the correct window size */ 946 (void) terminal_get_size(el, &lins, &cols); 947 if (terminal_change_size(el, lins, cols) == -1) 948 return -1; 949 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 950 terminal_bind_arrow(el); 951 el->el_terminal.t_name = term; 952 return i <= 0 ? -1 : 0; 953} 954 955 956/* terminal_get_size(): 957 * Return the new window size in lines and cols, and 958 * true if the size was changed. 959 */ 960protected int 961terminal_get_size(EditLine *el, int *lins, int *cols) 962{ 963 964 *cols = Val(T_co); 965 *lins = Val(T_li); 966 967#ifdef TIOCGWINSZ 968 { 969 struct winsize ws; 970 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) { 971 if (ws.ws_col) 972 *cols = ws.ws_col; 973 if (ws.ws_row) 974 *lins = ws.ws_row; 975 } 976 } 977#endif 978#ifdef TIOCGSIZE 979 { 980 struct ttysize ts; 981 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) { 982 if (ts.ts_cols) 983 *cols = ts.ts_cols; 984 if (ts.ts_lines) 985 *lins = ts.ts_lines; 986 } 987 } 988#endif 989 return Val(T_co) != *cols || Val(T_li) != *lins; 990} 991 992 993/* terminal_change_size(): 994 * Change the size of the terminal 995 */ 996protected int 997terminal_change_size(EditLine *el, int lins, int cols) 998{ 999 /* 1000 * Just in case 1001 */ 1002 Val(T_co) = (cols < 2) ? 80 : cols; 1003 Val(T_li) = (lins < 1) ? 24 : lins; 1004 1005 /* re-make display buffers */ 1006 if (terminal_rebuffer_display(el) == -1) 1007 return -1; 1008 re_clear_display(el); 1009 return 0; 1010} 1011 1012 1013/* terminal_init_arrow(): 1014 * Initialize the arrow key bindings from termcap 1015 */ 1016private void 1017terminal_init_arrow(EditLine *el) 1018{ 1019 funckey_t *arrow = el->el_terminal.t_fkey; 1020 1021 arrow[A_K_DN].name = STR("down"); 1022 arrow[A_K_DN].key = T_kd; 1023 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY; 1024 arrow[A_K_DN].type = XK_CMD; 1025 1026 arrow[A_K_UP].name = STR("up"); 1027 arrow[A_K_UP].key = T_ku; 1028 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY; 1029 arrow[A_K_UP].type = XK_CMD; 1030 1031 arrow[A_K_LT].name = STR("left"); 1032 arrow[A_K_LT].key = T_kl; 1033 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR; 1034 arrow[A_K_LT].type = XK_CMD; 1035 1036 arrow[A_K_RT].name = STR("right"); 1037 arrow[A_K_RT].key = T_kr; 1038 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR; 1039 arrow[A_K_RT].type = XK_CMD; 1040 1041 arrow[A_K_HO].name = STR("home"); 1042 arrow[A_K_HO].key = T_kh; 1043 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG; 1044 arrow[A_K_HO].type = XK_CMD; 1045 1046 arrow[A_K_EN].name = STR("end"); 1047 arrow[A_K_EN].key = T_at7; 1048 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END; 1049 arrow[A_K_EN].type = XK_CMD; 1050 1051 arrow[A_K_DE].name = STR("delete"); 1052 arrow[A_K_DE].key = T_kD; 1053 arrow[A_K_DE].fun.cmd = ED_DELETE_NEXT_CHAR; 1054 arrow[A_K_DE].type = XK_CMD; 1055} 1056 1057 1058/* terminal_reset_arrow(): 1059 * Reset arrow key bindings 1060 */ 1061private void 1062terminal_reset_arrow(EditLine *el) 1063{ 1064 funckey_t *arrow = el->el_terminal.t_fkey; 1065 static const Char strA[] = {033, '[', 'A', '\0'}; 1066 static const Char strB[] = {033, '[', 'B', '\0'}; 1067 static const Char strC[] = {033, '[', 'C', '\0'}; 1068 static const Char strD[] = {033, '[', 'D', '\0'}; 1069 static const Char strH[] = {033, '[', 'H', '\0'}; 1070 static const Char strF[] = {033, '[', 'F', '\0'}; 1071 static const Char stOA[] = {033, 'O', 'A', '\0'}; 1072 static const Char stOB[] = {033, 'O', 'B', '\0'}; 1073 static const Char stOC[] = {033, 'O', 'C', '\0'}; 1074 static const Char stOD[] = {033, 'O', 'D', '\0'}; 1075 static const Char stOH[] = {033, 'O', 'H', '\0'}; 1076 static const Char stOF[] = {033, 'O', 'F', '\0'}; 1077 1078 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1079 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1080 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1081 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1082 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1083 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1084 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1085 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1086 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1087 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1088 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1089 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1090 1091 if (el->el_map.type != MAP_VI) 1092 return; 1093 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1094 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1095 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1096 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1097 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1098 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1099 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1100 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1101 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1102 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1103 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1104 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1105} 1106 1107 1108/* terminal_set_arrow(): 1109 * Set an arrow key binding 1110 */ 1111protected int 1112terminal_set_arrow(EditLine *el, const Char *name, keymacro_value_t *fun, 1113 int type) 1114{ 1115 funckey_t *arrow = el->el_terminal.t_fkey; 1116 int i; 1117 1118 for (i = 0; i < A_K_NKEYS; i++) 1119 if (Strcmp(name, arrow[i].name) == 0) { 1120 arrow[i].fun = *fun; 1121 arrow[i].type = type; 1122 return 0; 1123 } 1124 return -1; 1125} 1126 1127 1128/* terminal_clear_arrow(): 1129 * Clear an arrow key binding 1130 */ 1131protected int 1132terminal_clear_arrow(EditLine *el, const Char *name) 1133{ 1134 funckey_t *arrow = el->el_terminal.t_fkey; 1135 int i; 1136 1137 for (i = 0; i < A_K_NKEYS; i++) 1138 if (Strcmp(name, arrow[i].name) == 0) { 1139 arrow[i].type = XK_NOD; 1140 return 0; 1141 } 1142 return -1; 1143} 1144 1145 1146/* terminal_print_arrow(): 1147 * Print the arrow key bindings 1148 */ 1149protected void 1150terminal_print_arrow(EditLine *el, const Char *name) 1151{ 1152 int i; 1153 funckey_t *arrow = el->el_terminal.t_fkey; 1154 1155 for (i = 0; i < A_K_NKEYS; i++) 1156 if (*name == '\0' || Strcmp(name, arrow[i].name) == 0) 1157 if (arrow[i].type != XK_NOD) 1158 keymacro_kprint(el, arrow[i].name, 1159 &arrow[i].fun, arrow[i].type); 1160} 1161 1162 1163/* terminal_bind_arrow(): 1164 * Bind the arrow keys 1165 */ 1166protected void 1167terminal_bind_arrow(EditLine *el) 1168{ 1169 el_action_t *map; 1170 const el_action_t *dmap; 1171 int i, j; 1172 char *p; 1173 funckey_t *arrow = el->el_terminal.t_fkey; 1174 1175 /* Check if the components needed are initialized */ 1176 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL) 1177 return; 1178 1179 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key; 1180 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs; 1181 1182 terminal_reset_arrow(el); 1183 1184 for (i = 0; i < A_K_NKEYS; i++) { 1185 Char wt_str[VISUAL_WIDTH_MAX]; 1186 Char *px; 1187 size_t n; 1188 1189 p = el->el_terminal.t_str[arrow[i].key]; 1190 if (!p || !*p) 1191 continue; 1192 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n) 1193 wt_str[n] = p[n]; 1194 while (n < VISUAL_WIDTH_MAX) 1195 wt_str[n++] = '\0'; 1196 px = wt_str; 1197 j = (unsigned char) *p; 1198 /* 1199 * Assign the arrow keys only if: 1200 * 1201 * 1. They are multi-character arrow keys and the user 1202 * has not re-assigned the leading character, or 1203 * has re-assigned the leading character to be 1204 * ED_SEQUENCE_LEAD_IN 1205 * 2. They are single arrow keys pointing to an 1206 * unassigned key. 1207 */ 1208 if (arrow[i].type == XK_NOD) 1209 keymacro_clear(el, map, px); 1210 else { 1211 if (p[1] && (dmap[j] == map[j] || 1212 map[j] == ED_SEQUENCE_LEAD_IN)) { 1213 keymacro_add(el, px, &arrow[i].fun, 1214 arrow[i].type); 1215 map[j] = ED_SEQUENCE_LEAD_IN; 1216 } else if (map[j] == ED_UNASSIGNED) { 1217 keymacro_clear(el, map, px); 1218 if (arrow[i].type == XK_CMD) 1219 map[j] = arrow[i].fun.cmd; 1220 else 1221 keymacro_add(el, px, &arrow[i].fun, 1222 arrow[i].type); 1223 } 1224 } 1225 } 1226} 1227 1228/* terminal_putc(): 1229 * Add a character 1230 */ 1231private int 1232terminal_putc(int c) 1233{ 1234 if (terminal_outfile == NULL) 1235 return -1; 1236 return fputc(c, terminal_outfile); 1237} 1238 1239private void 1240terminal_tputs(EditLine *el, const char *cap, int affcnt) 1241{ 1242#ifdef _REENTRANT 1243 pthread_mutex_lock(&terminal_mutex); 1244#endif 1245 terminal_outfile = el->el_outfile; 1246 (void)tputs(cap, affcnt, terminal_putc); 1247#ifdef _REENTRANT 1248 pthread_mutex_unlock(&terminal_mutex); 1249#endif 1250} 1251 1252/* terminal__putc(): 1253 * Add a character 1254 */ 1255protected int 1256terminal__putc(EditLine *el, wint_t c) 1257{ 1258 char buf[MB_LEN_MAX +1]; 1259 ssize_t i; 1260 if (c == (wint_t)MB_FILL_CHAR) 1261 return 0; 1262 i = ct_encode_char(buf, (size_t)MB_LEN_MAX, (Char)c); 1263 if (i <= 0) 1264 return (int)i; 1265 buf[i] = '\0'; 1266 return fputs(buf, el->el_outfile); 1267} 1268 1269/* terminal__flush(): 1270 * Flush output 1271 */ 1272protected void 1273terminal__flush(EditLine *el) 1274{ 1275 1276 (void) fflush(el->el_outfile); 1277} 1278 1279/* terminal_writec(): 1280 * Write the given character out, in a human readable form 1281 */ 1282protected void 1283terminal_writec(EditLine *el, wint_t c) 1284{ 1285 Char visbuf[VISUAL_WIDTH_MAX +1]; 1286 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, (Char)c); 1287 if (vcnt < 0) 1288 vcnt = 0; 1289 visbuf[vcnt] = '\0'; 1290 terminal_overwrite(el, visbuf, (size_t)vcnt); 1291 terminal__flush(el); 1292} 1293 1294 1295/* terminal_telltc(): 1296 * Print the current termcap characteristics 1297 */ 1298protected int 1299/*ARGSUSED*/ 1300terminal_telltc(EditLine *el, int argc __attribute__((__unused__)), 1301 const Char **argv __attribute__((__unused__))) 1302{ 1303 const struct termcapstr *t; 1304 char **ts; 1305 1306 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n"); 1307 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n"); 1308 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n", 1309 Val(T_co), Val(T_li)); 1310 (void) fprintf(el->el_outfile, 1311 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no"); 1312 (void) fprintf(el->el_outfile, 1313 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not "); 1314 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n", 1315 EL_HAS_AUTO_MARGINS ? "has" : "does not have"); 1316 if (EL_HAS_AUTO_MARGINS) 1317 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n", 1318 EL_HAS_MAGIC_MARGINS ? "has" : "does not have"); 1319 1320 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) { 1321 const char *ub; 1322 if (*ts && **ts) { 1323 ub = ct_encode_string(ct_visual_string( 1324 ct_decode_string(*ts, &el->el_scratch)), 1325 &el->el_scratch); 1326 } else { 1327 ub = "(empty)"; 1328 } 1329 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n", 1330 t->long_name, t->name, ub); 1331 } 1332 (void) fputc('\n', el->el_outfile); 1333 return 0; 1334} 1335 1336 1337/* terminal_settc(): 1338 * Change the current terminal characteristics 1339 */ 1340protected int 1341/*ARGSUSED*/ 1342terminal_settc(EditLine *el, int argc __attribute__((__unused__)), 1343 const Char **argv) 1344{ 1345 const struct termcapstr *ts; 1346 const struct termcapval *tv; 1347 char what[8], how[8]; 1348 1349 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1350 return -1; 1351 1352 strncpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what)); 1353 what[sizeof(what) - 1] = '\0'; 1354 strncpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how)); 1355 how[sizeof(how) - 1] = '\0'; 1356 1357 /* 1358 * Do the strings first 1359 */ 1360 for (ts = tstr; ts->name != NULL; ts++) 1361 if (strcmp(ts->name, what) == 0) 1362 break; 1363 1364 if (ts->name != NULL) { 1365 terminal_alloc(el, ts, how); 1366 terminal_setflags(el); 1367 return 0; 1368 } 1369 /* 1370 * Do the numeric ones second 1371 */ 1372 for (tv = tval; tv->name != NULL; tv++) 1373 if (strcmp(tv->name, what) == 0) 1374 break; 1375 1376 if (tv->name != NULL) 1377 return -1; 1378 1379 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1380 tv == &tval[T_am] || tv == &tval[T_xn]) { 1381 if (strcmp(how, "yes") == 0) 1382 el->el_terminal.t_val[tv - tval] = 1; 1383 else if (strcmp(how, "no") == 0) 1384 el->el_terminal.t_val[tv - tval] = 0; 1385 else { 1386 (void) fprintf(el->el_errfile, 1387 "" FSTR ": Bad value `%s'.\n", argv[0], how); 1388 return -1; 1389 } 1390 terminal_setflags(el); 1391 if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1) 1392 return -1; 1393 return 0; 1394 } else { 1395 long i; 1396 char *ep; 1397 1398 i = strtol(how, &ep, 10); 1399 if (*ep != '\0') { 1400 (void) fprintf(el->el_errfile, 1401 "" FSTR ": Bad value `%s'.\n", argv[0], how); 1402 return -1; 1403 } 1404 el->el_terminal.t_val[tv - tval] = (int) i; 1405 el->el_terminal.t_size.v = Val(T_co); 1406 el->el_terminal.t_size.h = Val(T_li); 1407 if (tv == &tval[T_co] || tv == &tval[T_li]) 1408 if (terminal_change_size(el, Val(T_li), Val(T_co)) 1409 == -1) 1410 return -1; 1411 return 0; 1412 } 1413} 1414 1415 1416/* terminal_gettc(): 1417 * Get the current terminal characteristics 1418 */ 1419protected int 1420/*ARGSUSED*/ 1421terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv) 1422{ 1423 const struct termcapstr *ts; 1424 const struct termcapval *tv; 1425 char *what; 1426 void *how; 1427 1428 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1429 return -1; 1430 1431 what = argv[1]; 1432 how = argv[2]; 1433 1434 /* 1435 * Do the strings first 1436 */ 1437 for (ts = tstr; ts->name != NULL; ts++) 1438 if (strcmp(ts->name, what) == 0) 1439 break; 1440 1441 if (ts->name != NULL) { 1442 *(char **)how = el->el_terminal.t_str[ts - tstr]; 1443 return 0; 1444 } 1445 /* 1446 * Do the numeric ones second 1447 */ 1448 for (tv = tval; tv->name != NULL; tv++) 1449 if (strcmp(tv->name, what) == 0) 1450 break; 1451 1452 if (tv->name == NULL) 1453 return -1; 1454 1455 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1456 tv == &tval[T_am] || tv == &tval[T_xn]) { 1457 static char yes[] = "yes"; 1458 static char no[] = "no"; 1459 if (el->el_terminal.t_val[tv - tval]) 1460 *(char **)how = yes; 1461 else 1462 *(char **)how = no; 1463 return 0; 1464 } else { 1465 *(int *)how = el->el_terminal.t_val[tv - tval]; 1466 return 0; 1467 } 1468} 1469 1470/* terminal_echotc(): 1471 * Print the termcap string out with variable substitution 1472 */ 1473protected int 1474/*ARGSUSED*/ 1475terminal_echotc(EditLine *el, int argc __attribute__((__unused__)), 1476 const Char **argv) 1477{ 1478 char *cap, *scap; 1479 Char *ep; 1480 int arg_need, arg_cols, arg_rows; 1481 int verbose = 0, silent = 0; 1482 char *area; 1483 static const char fmts[] = "%s\n", fmtd[] = "%d\n"; 1484 const struct termcapstr *t; 1485 char buf[TC_BUFSIZE]; 1486 long i; 1487 1488 area = buf; 1489 1490 if (argv == NULL || argv[1] == NULL) 1491 return -1; 1492 argv++; 1493 1494 if (argv[0][0] == '-') { 1495 switch (argv[0][1]) { 1496 case 'v': 1497 verbose = 1; 1498 break; 1499 case 's': 1500 silent = 1; 1501 break; 1502 default: 1503 /* stderror(ERR_NAME | ERR_TCUSAGE); */ 1504 break; 1505 } 1506 argv++; 1507 } 1508 if (!*argv || *argv[0] == '\0') 1509 return 0; 1510 if (Strcmp(*argv, STR("tabs")) == 0) { 1511 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no"); 1512 return 0; 1513 } else if (Strcmp(*argv, STR("meta")) == 0) { 1514 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no"); 1515 return 0; 1516 } else if (Strcmp(*argv, STR("xn")) == 0) { 1517 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ? 1518 "yes" : "no"); 1519 return 0; 1520 } else if (Strcmp(*argv, STR("am")) == 0) { 1521 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ? 1522 "yes" : "no"); 1523 return 0; 1524 } else if (Strcmp(*argv, STR("baud")) == 0) { 1525 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed); 1526 return 0; 1527 } else if (Strcmp(*argv, STR("rows")) == 0 || 1528 Strcmp(*argv, STR("lines")) == 0) { 1529 (void) fprintf(el->el_outfile, fmtd, Val(T_li)); 1530 return 0; 1531 } else if (Strcmp(*argv, STR("cols")) == 0) { 1532 (void) fprintf(el->el_outfile, fmtd, Val(T_co)); 1533 return 0; 1534 } 1535 /* 1536 * Try to use our local definition first 1537 */ 1538 scap = NULL; 1539 for (t = tstr; t->name != NULL; t++) 1540 if (strcmp(t->name, 1541 ct_encode_string(*argv, &el->el_scratch)) == 0) { 1542 scap = el->el_terminal.t_str[t - tstr]; 1543 break; 1544 } 1545 if (t->name == NULL) { 1546 /* XXX: some systems' tgetstr needs non const */ 1547 scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area); 1548 } 1549 if (!scap || scap[0] == '\0') { 1550 if (!silent) 1551 (void) fprintf(el->el_errfile, 1552 "echotc: Termcap parameter `" FSTR "' not found.\n", 1553 *argv); 1554 return -1; 1555 } 1556 /* 1557 * Count home many values we need for this capability. 1558 */ 1559 for (cap = scap, arg_need = 0; *cap; cap++) 1560 if (*cap == '%') 1561 switch (*++cap) { 1562 case 'd': 1563 case '2': 1564 case '3': 1565 case '.': 1566 case '+': 1567 arg_need++; 1568 break; 1569 case '%': 1570 case '>': 1571 case 'i': 1572 case 'r': 1573 case 'n': 1574 case 'B': 1575 case 'D': 1576 break; 1577 default: 1578 /* 1579 * hpux has lot's of them... 1580 */ 1581 if (verbose) 1582 (void) fprintf(el->el_errfile, 1583 "echotc: Warning: unknown termcap %% `%c'.\n", 1584 *cap); 1585 /* This is bad, but I won't complain */ 1586 break; 1587 } 1588 1589 switch (arg_need) { 1590 case 0: 1591 argv++; 1592 if (*argv && *argv[0]) { 1593 if (!silent) 1594 (void) fprintf(el->el_errfile, 1595 "echotc: Warning: Extra argument `" FSTR "'.\n", 1596 *argv); 1597 return -1; 1598 } 1599 terminal_tputs(el, scap, 1); 1600 break; 1601 case 1: 1602 argv++; 1603 if (!*argv || *argv[0] == '\0') { 1604 if (!silent) 1605 (void) fprintf(el->el_errfile, 1606 "echotc: Warning: Missing argument.\n"); 1607 return -1; 1608 } 1609 arg_cols = 0; 1610 i = Strtol(*argv, &ep, 10); 1611 if (*ep != '\0' || i < 0) { 1612 if (!silent) 1613 (void) fprintf(el->el_errfile, 1614 "echotc: Bad value `" FSTR "' for rows.\n", 1615 *argv); 1616 return -1; 1617 } 1618 arg_rows = (int) i; 1619 argv++; 1620 if (*argv && *argv[0]) { 1621 if (!silent) 1622 (void) fprintf(el->el_errfile, 1623 "echotc: Warning: Extra argument `" FSTR 1624 "'.\n", *argv); 1625 return -1; 1626 } 1627 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1); 1628 break; 1629 default: 1630 /* This is wrong, but I will ignore it... */ 1631 if (verbose) 1632 (void) fprintf(el->el_errfile, 1633 "echotc: Warning: Too many required arguments (%d).\n", 1634 arg_need); 1635 /* FALLTHROUGH */ 1636 case 2: 1637 argv++; 1638 if (!*argv || *argv[0] == '\0') { 1639 if (!silent) 1640 (void) fprintf(el->el_errfile, 1641 "echotc: Warning: Missing argument.\n"); 1642 return -1; 1643 } 1644 i = Strtol(*argv, &ep, 10); 1645 if (*ep != '\0' || i < 0) { 1646 if (!silent) 1647 (void) fprintf(el->el_errfile, 1648 "echotc: Bad value `" FSTR "' for cols.\n", 1649 *argv); 1650 return -1; 1651 } 1652 arg_cols = (int) i; 1653 argv++; 1654 if (!*argv || *argv[0] == '\0') { 1655 if (!silent) 1656 (void) fprintf(el->el_errfile, 1657 "echotc: Warning: Missing argument.\n"); 1658 return -1; 1659 } 1660 i = Strtol(*argv, &ep, 10); 1661 if (*ep != '\0' || i < 0) { 1662 if (!silent) 1663 (void) fprintf(el->el_errfile, 1664 "echotc: Bad value `" FSTR "' for rows.\n", 1665 *argv); 1666 return -1; 1667 } 1668 arg_rows = (int) i; 1669 if (*ep != '\0') { 1670 if (!silent) 1671 (void) fprintf(el->el_errfile, 1672 "echotc: Bad value `" FSTR "'.\n", *argv); 1673 return -1; 1674 } 1675 argv++; 1676 if (*argv && *argv[0]) { 1677 if (!silent) 1678 (void) fprintf(el->el_errfile, 1679 "echotc: Warning: Extra argument `" FSTR 1680 "'.\n", *argv); 1681 return -1; 1682 } 1683 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows); 1684 break; 1685 } 1686 return 0; 1687} 1688