1 /* $NetBSD: terminal.c,v 1.32 2016/05/09 21:46:56 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 1.32 2016/05/09 21:46:56 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 } 421 422 423 /* terminal_alloc_display(): 424 * Allocate a new display. 425 */ 426 static int 427 terminal_alloc_display(EditLine *el) 428 { 429 int i; 430 wchar_t **b; 431 coord_t *c = &el->el_terminal.t_size; 432 433 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1)); 434 if (b == NULL) 435 goto done; 436 for (i = 0; i < c->v; i++) { 437 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1)); 438 if (b[i] == NULL) { 439 while (--i >= 0) 440 el_free(b[i]); 441 el_free(b); 442 goto done; 443 } 444 } 445 b[c->v] = NULL; 446 el->el_display = b; 447 448 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1)); 449 if (b == NULL) 450 goto done; 451 for (i = 0; i < c->v; i++) { 452 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1)); 453 if (b[i] == NULL) { 454 while (--i >= 0) 455 el_free(b[i]); 456 el_free(b); 457 goto done; 458 } 459 } 460 b[c->v] = NULL; 461 el->el_vdisplay = b; 462 return 0; 463 done: 464 terminal_free_display(el); 465 return -1; 466 } 467 468 469 /* terminal_free_display(): 470 * Free the display buffers 471 */ 472 static void 473 terminal_free_display(EditLine *el) 474 { 475 wchar_t **b; 476 wchar_t **bufp; 477 478 b = el->el_display; 479 el->el_display = NULL; 480 if (b != NULL) { 481 for (bufp = b; *bufp != NULL; bufp++) 482 el_free(*bufp); 483 el_free(b); 484 } 485 b = el->el_vdisplay; 486 el->el_vdisplay = NULL; 487 if (b != NULL) { 488 for (bufp = b; *bufp != NULL; bufp++) 489 el_free(*bufp); 490 el_free(b); 491 } 492 } 493 494 495 /* terminal_move_to_line(): 496 * move to line <where> (first line == 0) 497 * as efficiently as possible 498 */ 499 libedit_private void 500 terminal_move_to_line(EditLine *el, int where) 501 { 502 int del; 503 504 if (where == el->el_cursor.v) 505 return; 506 507 if (where > el->el_terminal.t_size.v) { 508 #ifdef DEBUG_SCREEN 509 (void) fprintf(el->el_errfile, 510 "%s: where is ridiculous: %d\r\n", __func__, where); 511 #endif /* DEBUG_SCREEN */ 512 return; 513 } 514 if ((del = where - el->el_cursor.v) > 0) { 515 while (del > 0) { 516 if (EL_HAS_AUTO_MARGINS && 517 el->el_display[el->el_cursor.v][0] != '\0') { 518 size_t h = (size_t) 519 (el->el_terminal.t_size.h - 1); 520 for (; h > 0 && 521 el->el_display[el->el_cursor.v][h] == 522 MB_FILL_CHAR; 523 h--) 524 continue; 525 /* move without newline */ 526 terminal_move_to_char(el, (int)h); 527 terminal_overwrite(el, &el->el_display 528 [el->el_cursor.v][el->el_cursor.h], 529 (size_t)(el->el_terminal.t_size.h - 530 el->el_cursor.h)); 531 /* updates Cursor */ 532 del--; 533 } else { 534 if ((del > 1) && GoodStr(T_DO)) { 535 terminal_tputs(el, tgoto(Str(T_DO), del, 536 del), del); 537 del = 0; 538 } else { 539 for (; del > 0; del--) 540 terminal__putc(el, '\n'); 541 /* because the \n will become \r\n */ 542 el->el_cursor.h = 0; 543 } 544 } 545 } 546 } else { /* del < 0 */ 547 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up))) 548 terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del); 549 else { 550 if (GoodStr(T_up)) 551 for (; del < 0; del++) 552 terminal_tputs(el, Str(T_up), 1); 553 } 554 } 555 el->el_cursor.v = where;/* now where is here */ 556 } 557 558 559 /* terminal_move_to_char(): 560 * Move to the character position specified 561 */ 562 libedit_private void 563 terminal_move_to_char(EditLine *el, int where) 564 { 565 int del, i; 566 567 mc_again: 568 if (where == el->el_cursor.h) 569 return; 570 571 if (where > el->el_terminal.t_size.h) { 572 #ifdef DEBUG_SCREEN 573 (void) fprintf(el->el_errfile, 574 "%s: where is ridiculous: %d\r\n", __func__, where); 575 #endif /* DEBUG_SCREEN */ 576 return; 577 } 578 if (!where) { /* if where is first column */ 579 terminal__putc(el, '\r'); /* do a CR */ 580 el->el_cursor.h = 0; 581 return; 582 } 583 del = where - el->el_cursor.h; 584 585 if ((del < -4 || del > 4) && GoodStr(T_ch)) 586 /* go there directly */ 587 terminal_tputs(el, tgoto(Str(T_ch), where, where), where); 588 else { 589 if (del > 0) { /* moving forward */ 590 if ((del > 4) && GoodStr(T_RI)) 591 terminal_tputs(el, tgoto(Str(T_RI), del, del), 592 del); 593 else { 594 /* if I can do tabs, use them */ 595 if (EL_CAN_TAB) { 596 if ((el->el_cursor.h & 0370) != 597 (where & ~0x7) 598 && (el->el_display[ 599 el->el_cursor.v][where & 0370] != 600 MB_FILL_CHAR) 601 ) { 602 /* if not within tab stop */ 603 for (i = 604 (el->el_cursor.h & 0370); 605 i < (where & ~0x7); 606 i += 8) 607 terminal__putc(el, 608 '\t'); 609 /* then tab over */ 610 el->el_cursor.h = where & ~0x7; 611 } 612 } 613 /* 614 * it's usually cheaper to just write the 615 * chars, so we do. 616 */ 617 /* 618 * NOTE THAT terminal_overwrite() WILL CHANGE 619 * el->el_cursor.h!!! 620 */ 621 terminal_overwrite(el, &el->el_display[ 622 el->el_cursor.v][el->el_cursor.h], 623 (size_t)(where - el->el_cursor.h)); 624 625 } 626 } else { /* del < 0 := moving backward */ 627 if ((-del > 4) && GoodStr(T_LE)) 628 terminal_tputs(el, tgoto(Str(T_LE), -del, -del), 629 -del); 630 else { /* can't go directly there */ 631 /* 632 * if the "cost" is greater than the "cost" 633 * from col 0 634 */ 635 if (EL_CAN_TAB ? 636 ((unsigned int)-del > 637 (((unsigned int) where >> 3) + 638 (where & 07))) 639 : (-del > where)) { 640 terminal__putc(el, '\r');/* do a CR */ 641 el->el_cursor.h = 0; 642 goto mc_again; /* and try again */ 643 } 644 for (i = 0; i < -del; i++) 645 terminal__putc(el, '\b'); 646 } 647 } 648 } 649 el->el_cursor.h = where; /* now where is here */ 650 } 651 652 653 /* terminal_overwrite(): 654 * Overstrike num characters 655 * Assumes MB_FILL_CHARs are present to keep the column count correct 656 */ 657 libedit_private void 658 terminal_overwrite(EditLine *el, const wchar_t *cp, size_t n) 659 { 660 if (n == 0) 661 return; 662 663 if (n > (size_t)el->el_terminal.t_size.h) { 664 #ifdef DEBUG_SCREEN 665 (void) fprintf(el->el_errfile, 666 "%s: n is ridiculous: %zu\r\n", __func__, n); 667 #endif /* DEBUG_SCREEN */ 668 return; 669 } 670 671 do { 672 /* terminal__putc() ignores any MB_FILL_CHARs */ 673 terminal__putc(el, *cp++); 674 el->el_cursor.h++; 675 } while (--n); 676 677 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */ 678 if (EL_HAS_AUTO_MARGINS) { /* yes */ 679 el->el_cursor.h = 0; 680 el->el_cursor.v++; 681 if (EL_HAS_MAGIC_MARGINS) { 682 /* force the wrap to avoid the "magic" 683 * situation */ 684 wchar_t c; 685 if ((c = el->el_display[el->el_cursor.v] 686 [el->el_cursor.h]) != '\0') { 687 terminal_overwrite(el, &c, (size_t)1); 688 while (el->el_display[el->el_cursor.v] 689 [el->el_cursor.h] == MB_FILL_CHAR) 690 el->el_cursor.h++; 691 } else { 692 terminal__putc(el, ' '); 693 el->el_cursor.h = 1; 694 } 695 } 696 } else /* no wrap, but cursor stays on screen */ 697 el->el_cursor.h = el->el_terminal.t_size.h - 1; 698 } 699 } 700 701 702 /* terminal_deletechars(): 703 * Delete num characters 704 */ 705 libedit_private void 706 terminal_deletechars(EditLine *el, int num) 707 { 708 if (num <= 0) 709 return; 710 711 if (!EL_CAN_DELETE) { 712 #ifdef DEBUG_EDIT 713 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n"); 714 #endif /* DEBUG_EDIT */ 715 return; 716 } 717 if (num > el->el_terminal.t_size.h) { 718 #ifdef DEBUG_SCREEN 719 (void) fprintf(el->el_errfile, 720 "%s: num is ridiculous: %d\r\n", __func__, num); 721 #endif /* DEBUG_SCREEN */ 722 return; 723 } 724 if (GoodStr(T_DC)) /* if I have multiple delete */ 725 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more 726 * expen. */ 727 terminal_tputs(el, tgoto(Str(T_DC), num, num), num); 728 return; 729 } 730 if (GoodStr(T_dm)) /* if I have delete mode */ 731 terminal_tputs(el, Str(T_dm), 1); 732 733 if (GoodStr(T_dc)) /* else do one at a time */ 734 while (num--) 735 terminal_tputs(el, Str(T_dc), 1); 736 737 if (GoodStr(T_ed)) /* if I have delete mode */ 738 terminal_tputs(el, Str(T_ed), 1); 739 } 740 741 742 /* terminal_insertwrite(): 743 * Puts terminal in insert character mode or inserts num 744 * characters in the line 745 * Assumes MB_FILL_CHARs are present to keep column count correct 746 */ 747 libedit_private void 748 terminal_insertwrite(EditLine *el, wchar_t *cp, int num) 749 { 750 if (num <= 0) 751 return; 752 if (!EL_CAN_INSERT) { 753 #ifdef DEBUG_EDIT 754 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n"); 755 #endif /* DEBUG_EDIT */ 756 return; 757 } 758 if (num > el->el_terminal.t_size.h) { 759 #ifdef DEBUG_SCREEN 760 (void) fprintf(el->el_errfile, 761 "%s: num is ridiculous: %d\r\n", __func__, num); 762 #endif /* DEBUG_SCREEN */ 763 return; 764 } 765 if (GoodStr(T_IC)) /* if I have multiple insert */ 766 if ((num > 1) || !GoodStr(T_ic)) { 767 /* if ic would be more expensive */ 768 terminal_tputs(el, tgoto(Str(T_IC), num, num), num); 769 terminal_overwrite(el, cp, (size_t)num); 770 /* this updates el_cursor.h */ 771 return; 772 } 773 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */ 774 terminal_tputs(el, Str(T_im), 1); 775 776 el->el_cursor.h += num; 777 do 778 terminal__putc(el, *cp++); 779 while (--num); 780 781 if (GoodStr(T_ip)) /* have to make num chars insert */ 782 terminal_tputs(el, Str(T_ip), 1); 783 784 terminal_tputs(el, Str(T_ei), 1); 785 return; 786 } 787 do { 788 if (GoodStr(T_ic)) /* have to make num chars insert */ 789 terminal_tputs(el, Str(T_ic), 1); 790 791 terminal__putc(el, *cp++); 792 793 el->el_cursor.h++; 794 795 if (GoodStr(T_ip)) /* have to make num chars insert */ 796 terminal_tputs(el, Str(T_ip), 1); 797 /* pad the inserted char */ 798 799 } while (--num); 800 } 801 802 803 /* terminal_clear_EOL(): 804 * clear to end of line. There are num characters to clear 805 */ 806 libedit_private void 807 terminal_clear_EOL(EditLine *el, int num) 808 { 809 int i; 810 811 if (EL_CAN_CEOL && GoodStr(T_ce)) 812 terminal_tputs(el, Str(T_ce), 1); 813 else { 814 for (i = 0; i < num; i++) 815 terminal__putc(el, ' '); 816 el->el_cursor.h += num; /* have written num spaces */ 817 } 818 } 819 820 821 /* terminal_clear_screen(): 822 * Clear the screen 823 */ 824 libedit_private void 825 terminal_clear_screen(EditLine *el) 826 { /* clear the whole screen and home */ 827 828 if (GoodStr(T_cl)) 829 /* send the clear screen code */ 830 terminal_tputs(el, Str(T_cl), Val(T_li)); 831 else if (GoodStr(T_ho) && GoodStr(T_cd)) { 832 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */ 833 /* clear to bottom of screen */ 834 terminal_tputs(el, Str(T_cd), Val(T_li)); 835 } else { 836 terminal__putc(el, '\r'); 837 terminal__putc(el, '\n'); 838 } 839 } 840 841 842 /* terminal_beep(): 843 * Beep the way the terminal wants us 844 */ 845 libedit_private void 846 terminal_beep(EditLine *el) 847 { 848 if (GoodStr(T_bl)) 849 /* what termcap says we should use */ 850 terminal_tputs(el, Str(T_bl), 1); 851 else 852 terminal__putc(el, '\007'); /* an ASCII bell; ^G */ 853 } 854 855 856 libedit_private void 857 terminal_get(EditLine *el, const char **term) 858 { 859 *term = el->el_terminal.t_name; 860 } 861 862 863 /* terminal_set(): 864 * Read in the terminal capabilities from the requested terminal 865 */ 866 libedit_private int 867 terminal_set(EditLine *el, const char *term) 868 { 869 int i; 870 char buf[TC_BUFSIZE]; 871 char *area; 872 const struct termcapstr *t; 873 sigset_t oset, nset; 874 int lins, cols; 875 876 (void) sigemptyset(&nset); 877 (void) sigaddset(&nset, SIGWINCH); 878 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 879 880 area = buf; 881 882 883 if (term == NULL) 884 term = getenv("TERM"); 885 886 if (!term || !term[0]) 887 term = "dumb"; 888 889 if (strcmp(term, "emacs") == 0) 890 el->el_flags |= EDIT_DISABLED; 891 892 (void) memset(el->el_terminal.t_cap, 0, TC_BUFSIZE); 893 894 i = tgetent(el->el_terminal.t_cap, term); 895 896 if (i <= 0) { 897 if (i == -1) 898 (void) fprintf(el->el_errfile, 899 "Cannot read termcap database;\n"); 900 else if (i == 0) 901 (void) fprintf(el->el_errfile, 902 "No entry for terminal type \"%s\";\n", term); 903 (void) fprintf(el->el_errfile, 904 "using dumb terminal settings.\n"); 905 Val(T_co) = 80; /* do a dumb terminal */ 906 Val(T_pt) = Val(T_km) = Val(T_li) = 0; 907 Val(T_xt) = Val(T_MT); 908 for (t = tstr; t->name != NULL; t++) 909 terminal_alloc(el, t, NULL); 910 } else { 911 /* auto/magic margins */ 912 Val(T_am) = tgetflag("am"); 913 Val(T_xn) = tgetflag("xn"); 914 /* Can we tab */ 915 Val(T_pt) = tgetflag("pt"); 916 Val(T_xt) = tgetflag("xt"); 917 /* do we have a meta? */ 918 Val(T_km) = tgetflag("km"); 919 Val(T_MT) = tgetflag("MT"); 920 /* Get the size */ 921 Val(T_co) = tgetnum("co"); 922 Val(T_li) = tgetnum("li"); 923 for (t = tstr; t->name != NULL; t++) { 924 /* XXX: some systems' tgetstr needs non const */ 925 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name), 926 &area)); 927 } 928 } 929 930 if (Val(T_co) < 2) 931 Val(T_co) = 80; /* just in case */ 932 if (Val(T_li) < 1) 933 Val(T_li) = 24; 934 935 el->el_terminal.t_size.v = Val(T_co); 936 el->el_terminal.t_size.h = Val(T_li); 937 938 terminal_setflags(el); 939 940 /* get the correct window size */ 941 (void) terminal_get_size(el, &lins, &cols); 942 if (terminal_change_size(el, lins, cols) == -1) 943 return -1; 944 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 945 terminal_bind_arrow(el); 946 el->el_terminal.t_name = term; 947 return i <= 0 ? -1 : 0; 948 } 949 950 951 /* terminal_get_size(): 952 * Return the new window size in lines and cols, and 953 * true if the size was changed. 954 */ 955 libedit_private int 956 terminal_get_size(EditLine *el, int *lins, int *cols) 957 { 958 959 *cols = Val(T_co); 960 *lins = Val(T_li); 961 962 #ifdef TIOCGWINSZ 963 { 964 struct winsize ws; 965 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) { 966 if (ws.ws_col) 967 *cols = ws.ws_col; 968 if (ws.ws_row) 969 *lins = ws.ws_row; 970 } 971 } 972 #endif 973 #ifdef TIOCGSIZE 974 { 975 struct ttysize ts; 976 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) { 977 if (ts.ts_cols) 978 *cols = ts.ts_cols; 979 if (ts.ts_lines) 980 *lins = ts.ts_lines; 981 } 982 } 983 #endif 984 return Val(T_co) != *cols || Val(T_li) != *lins; 985 } 986 987 988 /* terminal_change_size(): 989 * Change the size of the terminal 990 */ 991 libedit_private int 992 terminal_change_size(EditLine *el, int lins, int cols) 993 { 994 /* 995 * Just in case 996 */ 997 Val(T_co) = (cols < 2) ? 80 : cols; 998 Val(T_li) = (lins < 1) ? 24 : lins; 999 1000 /* re-make display buffers */ 1001 if (terminal_rebuffer_display(el) == -1) 1002 return -1; 1003 re_clear_display(el); 1004 return 0; 1005 } 1006 1007 1008 /* terminal_init_arrow(): 1009 * Initialize the arrow key bindings from termcap 1010 */ 1011 static void 1012 terminal_init_arrow(EditLine *el) 1013 { 1014 funckey_t *arrow = el->el_terminal.t_fkey; 1015 1016 arrow[A_K_DN].name = L"down"; 1017 arrow[A_K_DN].key = T_kd; 1018 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY; 1019 arrow[A_K_DN].type = XK_CMD; 1020 1021 arrow[A_K_UP].name = L"up"; 1022 arrow[A_K_UP].key = T_ku; 1023 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY; 1024 arrow[A_K_UP].type = XK_CMD; 1025 1026 arrow[A_K_LT].name = L"left"; 1027 arrow[A_K_LT].key = T_kl; 1028 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR; 1029 arrow[A_K_LT].type = XK_CMD; 1030 1031 arrow[A_K_RT].name = L"right"; 1032 arrow[A_K_RT].key = T_kr; 1033 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR; 1034 arrow[A_K_RT].type = XK_CMD; 1035 1036 arrow[A_K_HO].name = L"home"; 1037 arrow[A_K_HO].key = T_kh; 1038 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG; 1039 arrow[A_K_HO].type = XK_CMD; 1040 1041 arrow[A_K_EN].name = L"end"; 1042 arrow[A_K_EN].key = T_at7; 1043 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END; 1044 arrow[A_K_EN].type = XK_CMD; 1045 1046 arrow[A_K_DE].name = L"delete"; 1047 arrow[A_K_DE].key = T_kD; 1048 arrow[A_K_DE].fun.cmd = ED_DELETE_NEXT_CHAR; 1049 arrow[A_K_DE].type = XK_CMD; 1050 } 1051 1052 1053 /* terminal_reset_arrow(): 1054 * Reset arrow key bindings 1055 */ 1056 static void 1057 terminal_reset_arrow(EditLine *el) 1058 { 1059 funckey_t *arrow = el->el_terminal.t_fkey; 1060 static const wchar_t strA[] = L"\033[A"; 1061 static const wchar_t strB[] = L"\033[B"; 1062 static const wchar_t strC[] = L"\033[C"; 1063 static const wchar_t strD[] = L"\033[D"; 1064 static const wchar_t strH[] = L"\033[H"; 1065 static const wchar_t strF[] = L"\033[F"; 1066 static const wchar_t stOA[] = L"\033OA"; 1067 static const wchar_t stOB[] = L"\033OB"; 1068 static const wchar_t stOC[] = L"\033OC"; 1069 static const wchar_t stOD[] = L"\033OD"; 1070 static const wchar_t stOH[] = L"\033OH"; 1071 static const wchar_t stOF[] = L"\033OF"; 1072 1073 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1074 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1075 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1076 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1077 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1078 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1079 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1080 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1081 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1082 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1083 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1084 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1085 1086 if (el->el_map.type != MAP_VI) 1087 return; 1088 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1089 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1090 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1091 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1092 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1093 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1094 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type); 1095 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type); 1096 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type); 1097 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type); 1098 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type); 1099 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type); 1100 } 1101 1102 1103 /* terminal_set_arrow(): 1104 * Set an arrow key binding 1105 */ 1106 libedit_private int 1107 terminal_set_arrow(EditLine *el, const wchar_t *name, keymacro_value_t *fun, 1108 int type) 1109 { 1110 funckey_t *arrow = el->el_terminal.t_fkey; 1111 int i; 1112 1113 for (i = 0; i < A_K_NKEYS; i++) 1114 if (wcscmp(name, arrow[i].name) == 0) { 1115 arrow[i].fun = *fun; 1116 arrow[i].type = type; 1117 return 0; 1118 } 1119 return -1; 1120 } 1121 1122 1123 /* terminal_clear_arrow(): 1124 * Clear an arrow key binding 1125 */ 1126 libedit_private int 1127 terminal_clear_arrow(EditLine *el, const wchar_t *name) 1128 { 1129 funckey_t *arrow = el->el_terminal.t_fkey; 1130 int i; 1131 1132 for (i = 0; i < A_K_NKEYS; i++) 1133 if (wcscmp(name, arrow[i].name) == 0) { 1134 arrow[i].type = XK_NOD; 1135 return 0; 1136 } 1137 return -1; 1138 } 1139 1140 1141 /* terminal_print_arrow(): 1142 * Print the arrow key bindings 1143 */ 1144 libedit_private void 1145 terminal_print_arrow(EditLine *el, const wchar_t *name) 1146 { 1147 int i; 1148 funckey_t *arrow = el->el_terminal.t_fkey; 1149 1150 for (i = 0; i < A_K_NKEYS; i++) 1151 if (*name == '\0' || wcscmp(name, arrow[i].name) == 0) 1152 if (arrow[i].type != XK_NOD) 1153 keymacro_kprint(el, arrow[i].name, 1154 &arrow[i].fun, arrow[i].type); 1155 } 1156 1157 1158 /* terminal_bind_arrow(): 1159 * Bind the arrow keys 1160 */ 1161 libedit_private void 1162 terminal_bind_arrow(EditLine *el) 1163 { 1164 el_action_t *map; 1165 const el_action_t *dmap; 1166 int i, j; 1167 char *p; 1168 funckey_t *arrow = el->el_terminal.t_fkey; 1169 1170 /* Check if the components needed are initialized */ 1171 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL) 1172 return; 1173 1174 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key; 1175 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs; 1176 1177 terminal_reset_arrow(el); 1178 1179 for (i = 0; i < A_K_NKEYS; i++) { 1180 wchar_t wt_str[VISUAL_WIDTH_MAX]; 1181 wchar_t *px; 1182 size_t n; 1183 1184 p = el->el_terminal.t_str[arrow[i].key]; 1185 if (!p || !*p) 1186 continue; 1187 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n) 1188 wt_str[n] = p[n]; 1189 while (n < VISUAL_WIDTH_MAX) 1190 wt_str[n++] = '\0'; 1191 px = wt_str; 1192 j = (unsigned char) *p; 1193 /* 1194 * Assign the arrow keys only if: 1195 * 1196 * 1. They are multi-character arrow keys and the user 1197 * has not re-assigned the leading character, or 1198 * has re-assigned the leading character to be 1199 * ED_SEQUENCE_LEAD_IN 1200 * 2. They are single arrow keys pointing to an 1201 * unassigned key. 1202 */ 1203 if (arrow[i].type == XK_NOD) 1204 keymacro_clear(el, map, px); 1205 else { 1206 if (p[1] && (dmap[j] == map[j] || 1207 map[j] == ED_SEQUENCE_LEAD_IN)) { 1208 keymacro_add(el, px, &arrow[i].fun, 1209 arrow[i].type); 1210 map[j] = ED_SEQUENCE_LEAD_IN; 1211 } else if (map[j] == ED_UNASSIGNED) { 1212 keymacro_clear(el, map, px); 1213 if (arrow[i].type == XK_CMD) 1214 map[j] = arrow[i].fun.cmd; 1215 else 1216 keymacro_add(el, px, &arrow[i].fun, 1217 arrow[i].type); 1218 } 1219 } 1220 } 1221 } 1222 1223 /* terminal_putc(): 1224 * Add a character 1225 */ 1226 static int 1227 terminal_putc(int c) 1228 { 1229 if (terminal_outfile == NULL) 1230 return -1; 1231 return fputc(c, terminal_outfile); 1232 } 1233 1234 static void 1235 terminal_tputs(EditLine *el, const char *cap, int affcnt) 1236 { 1237 #ifdef _REENTRANT 1238 pthread_mutex_lock(&terminal_mutex); 1239 #endif 1240 terminal_outfile = el->el_outfile; 1241 (void)tputs(cap, affcnt, terminal_putc); 1242 #ifdef _REENTRANT 1243 pthread_mutex_unlock(&terminal_mutex); 1244 #endif 1245 } 1246 1247 /* terminal__putc(): 1248 * Add a character 1249 */ 1250 libedit_private int 1251 terminal__putc(EditLine *el, wint_t c) 1252 { 1253 char buf[MB_LEN_MAX +1]; 1254 ssize_t i; 1255 if (c == (wint_t)MB_FILL_CHAR) 1256 return 0; 1257 i = ct_encode_char(buf, (size_t)MB_LEN_MAX, c); 1258 if (i <= 0) 1259 return (int)i; 1260 buf[i] = '\0'; 1261 return fputs(buf, el->el_outfile); 1262 } 1263 1264 /* terminal__flush(): 1265 * Flush output 1266 */ 1267 libedit_private void 1268 terminal__flush(EditLine *el) 1269 { 1270 1271 (void) fflush(el->el_outfile); 1272 } 1273 1274 /* terminal_writec(): 1275 * Write the given character out, in a human readable form 1276 */ 1277 libedit_private void 1278 terminal_writec(EditLine *el, wint_t c) 1279 { 1280 wchar_t visbuf[VISUAL_WIDTH_MAX +1]; 1281 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c); 1282 if (vcnt < 0) 1283 vcnt = 0; 1284 visbuf[vcnt] = '\0'; 1285 terminal_overwrite(el, visbuf, (size_t)vcnt); 1286 terminal__flush(el); 1287 } 1288 1289 1290 /* terminal_telltc(): 1291 * Print the current termcap characteristics 1292 */ 1293 libedit_private int 1294 /*ARGSUSED*/ 1295 terminal_telltc(EditLine *el, int argc __attribute__((__unused__)), 1296 const wchar_t **argv __attribute__((__unused__))) 1297 { 1298 const struct termcapstr *t; 1299 char **ts; 1300 1301 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n"); 1302 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n"); 1303 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n", 1304 Val(T_co), Val(T_li)); 1305 (void) fprintf(el->el_outfile, 1306 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no"); 1307 (void) fprintf(el->el_outfile, 1308 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not "); 1309 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n", 1310 EL_HAS_AUTO_MARGINS ? "has" : "does not have"); 1311 if (EL_HAS_AUTO_MARGINS) 1312 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n", 1313 EL_HAS_MAGIC_MARGINS ? "has" : "does not have"); 1314 1315 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) { 1316 const char *ub; 1317 if (*ts && **ts) { 1318 ub = ct_encode_string(ct_visual_string( 1319 ct_decode_string(*ts, &el->el_scratch), 1320 &el->el_visual), &el->el_scratch); 1321 } else { 1322 ub = "(empty)"; 1323 } 1324 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n", 1325 t->long_name, t->name, ub); 1326 } 1327 (void) fputc('\n', el->el_outfile); 1328 return 0; 1329 } 1330 1331 1332 /* terminal_settc(): 1333 * Change the current terminal characteristics 1334 */ 1335 libedit_private int 1336 /*ARGSUSED*/ 1337 terminal_settc(EditLine *el, int argc __attribute__((__unused__)), 1338 const wchar_t **argv) 1339 { 1340 const struct termcapstr *ts; 1341 const struct termcapval *tv; 1342 char what[8], how[8]; 1343 1344 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1345 return -1; 1346 1347 strncpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what)); 1348 what[sizeof(what) - 1] = '\0'; 1349 strncpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how)); 1350 how[sizeof(how) - 1] = '\0'; 1351 1352 /* 1353 * Do the strings first 1354 */ 1355 for (ts = tstr; ts->name != NULL; ts++) 1356 if (strcmp(ts->name, what) == 0) 1357 break; 1358 1359 if (ts->name != NULL) { 1360 terminal_alloc(el, ts, how); 1361 terminal_setflags(el); 1362 return 0; 1363 } 1364 /* 1365 * Do the numeric ones second 1366 */ 1367 for (tv = tval; tv->name != NULL; tv++) 1368 if (strcmp(tv->name, what) == 0) 1369 break; 1370 1371 if (tv->name != NULL) 1372 return -1; 1373 1374 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1375 tv == &tval[T_am] || tv == &tval[T_xn]) { 1376 if (strcmp(how, "yes") == 0) 1377 el->el_terminal.t_val[tv - tval] = 1; 1378 else if (strcmp(how, "no") == 0) 1379 el->el_terminal.t_val[tv - tval] = 0; 1380 else { 1381 (void) fprintf(el->el_errfile, 1382 "%ls: Bad value `%s'.\n", argv[0], how); 1383 return -1; 1384 } 1385 terminal_setflags(el); 1386 if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1) 1387 return -1; 1388 return 0; 1389 } else { 1390 long i; 1391 char *ep; 1392 1393 i = strtol(how, &ep, 10); 1394 if (*ep != '\0') { 1395 (void) fprintf(el->el_errfile, 1396 "%ls: Bad value `%s'.\n", argv[0], how); 1397 return -1; 1398 } 1399 el->el_terminal.t_val[tv - tval] = (int) i; 1400 el->el_terminal.t_size.v = Val(T_co); 1401 el->el_terminal.t_size.h = Val(T_li); 1402 if (tv == &tval[T_co] || tv == &tval[T_li]) 1403 if (terminal_change_size(el, Val(T_li), Val(T_co)) 1404 == -1) 1405 return -1; 1406 return 0; 1407 } 1408 } 1409 1410 1411 /* terminal_gettc(): 1412 * Get the current terminal characteristics 1413 */ 1414 libedit_private int 1415 /*ARGSUSED*/ 1416 terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv) 1417 { 1418 const struct termcapstr *ts; 1419 const struct termcapval *tv; 1420 char *what; 1421 void *how; 1422 1423 if (argv == NULL || argv[1] == NULL || argv[2] == NULL) 1424 return -1; 1425 1426 what = argv[1]; 1427 how = argv[2]; 1428 1429 /* 1430 * Do the strings first 1431 */ 1432 for (ts = tstr; ts->name != NULL; ts++) 1433 if (strcmp(ts->name, what) == 0) 1434 break; 1435 1436 if (ts->name != NULL) { 1437 *(char **)how = el->el_terminal.t_str[ts - tstr]; 1438 return 0; 1439 } 1440 /* 1441 * Do the numeric ones second 1442 */ 1443 for (tv = tval; tv->name != NULL; tv++) 1444 if (strcmp(tv->name, what) == 0) 1445 break; 1446 1447 if (tv->name == NULL) 1448 return -1; 1449 1450 if (tv == &tval[T_pt] || tv == &tval[T_km] || 1451 tv == &tval[T_am] || tv == &tval[T_xn]) { 1452 static char yes[] = "yes"; 1453 static char no[] = "no"; 1454 if (el->el_terminal.t_val[tv - tval]) 1455 *(char **)how = yes; 1456 else 1457 *(char **)how = no; 1458 return 0; 1459 } else { 1460 *(int *)how = el->el_terminal.t_val[tv - tval]; 1461 return 0; 1462 } 1463 } 1464 1465 /* terminal_echotc(): 1466 * Print the termcap string out with variable substitution 1467 */ 1468 libedit_private int 1469 /*ARGSUSED*/ 1470 terminal_echotc(EditLine *el, int argc __attribute__((__unused__)), 1471 const wchar_t **argv) 1472 { 1473 char *cap, *scap; 1474 wchar_t *ep; 1475 int arg_need, arg_cols, arg_rows; 1476 int verbose = 0, silent = 0; 1477 char *area; 1478 static const char fmts[] = "%s\n", fmtd[] = "%d\n"; 1479 const struct termcapstr *t; 1480 char buf[TC_BUFSIZE]; 1481 long i; 1482 1483 area = buf; 1484 1485 if (argv == NULL || argv[1] == NULL) 1486 return -1; 1487 argv++; 1488 1489 if (argv[0][0] == '-') { 1490 switch (argv[0][1]) { 1491 case 'v': 1492 verbose = 1; 1493 break; 1494 case 's': 1495 silent = 1; 1496 break; 1497 default: 1498 /* stderror(ERR_NAME | ERR_TCUSAGE); */ 1499 break; 1500 } 1501 argv++; 1502 } 1503 if (!*argv || *argv[0] == '\0') 1504 return 0; 1505 if (wcscmp(*argv, L"tabs") == 0) { 1506 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no"); 1507 return 0; 1508 } else if (wcscmp(*argv, L"meta") == 0) { 1509 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no"); 1510 return 0; 1511 } else if (wcscmp(*argv, L"xn") == 0) { 1512 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ? 1513 "yes" : "no"); 1514 return 0; 1515 } else if (wcscmp(*argv, L"am") == 0) { 1516 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ? 1517 "yes" : "no"); 1518 return 0; 1519 } else if (wcscmp(*argv, L"baud") == 0) { 1520 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed); 1521 return 0; 1522 } else if (wcscmp(*argv, L"rows") == 0 || 1523 wcscmp(*argv, L"lines") == 0) { 1524 (void) fprintf(el->el_outfile, fmtd, Val(T_li)); 1525 return 0; 1526 } else if (wcscmp(*argv, L"cols") == 0) { 1527 (void) fprintf(el->el_outfile, fmtd, Val(T_co)); 1528 return 0; 1529 } 1530 /* 1531 * Try to use our local definition first 1532 */ 1533 scap = NULL; 1534 for (t = tstr; t->name != NULL; t++) 1535 if (strcmp(t->name, 1536 ct_encode_string(*argv, &el->el_scratch)) == 0) { 1537 scap = el->el_terminal.t_str[t - tstr]; 1538 break; 1539 } 1540 if (t->name == NULL) { 1541 /* XXX: some systems' tgetstr needs non const */ 1542 scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area); 1543 } 1544 if (!scap || scap[0] == '\0') { 1545 if (!silent) 1546 (void) fprintf(el->el_errfile, 1547 "echotc: Termcap parameter `%ls' not found.\n", 1548 *argv); 1549 return -1; 1550 } 1551 /* 1552 * Count home many values we need for this capability. 1553 */ 1554 for (cap = scap, arg_need = 0; *cap; cap++) 1555 if (*cap == '%') 1556 switch (*++cap) { 1557 case 'd': 1558 case '2': 1559 case '3': 1560 case '.': 1561 case '+': 1562 arg_need++; 1563 break; 1564 case '%': 1565 case '>': 1566 case 'i': 1567 case 'r': 1568 case 'n': 1569 case 'B': 1570 case 'D': 1571 break; 1572 default: 1573 /* 1574 * hpux has lot's of them... 1575 */ 1576 if (verbose) 1577 (void) fprintf(el->el_errfile, 1578 "echotc: Warning: unknown termcap %% `%c'.\n", 1579 *cap); 1580 /* This is bad, but I won't complain */ 1581 break; 1582 } 1583 1584 switch (arg_need) { 1585 case 0: 1586 argv++; 1587 if (*argv && *argv[0]) { 1588 if (!silent) 1589 (void) fprintf(el->el_errfile, 1590 "echotc: Warning: Extra argument `%ls'.\n", 1591 *argv); 1592 return -1; 1593 } 1594 terminal_tputs(el, scap, 1); 1595 break; 1596 case 1: 1597 argv++; 1598 if (!*argv || *argv[0] == '\0') { 1599 if (!silent) 1600 (void) fprintf(el->el_errfile, 1601 "echotc: Warning: Missing argument.\n"); 1602 return -1; 1603 } 1604 arg_cols = 0; 1605 i = wcstol(*argv, &ep, 10); 1606 if (*ep != '\0' || i < 0) { 1607 if (!silent) 1608 (void) fprintf(el->el_errfile, 1609 "echotc: Bad value `%ls' for rows.\n", 1610 *argv); 1611 return -1; 1612 } 1613 arg_rows = (int) i; 1614 argv++; 1615 if (*argv && *argv[0]) { 1616 if (!silent) 1617 (void) fprintf(el->el_errfile, 1618 "echotc: Warning: Extra argument `%ls" 1619 "'.\n", *argv); 1620 return -1; 1621 } 1622 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1); 1623 break; 1624 default: 1625 /* This is wrong, but I will ignore it... */ 1626 if (verbose) 1627 (void) fprintf(el->el_errfile, 1628 "echotc: Warning: Too many required arguments (%d).\n", 1629 arg_need); 1630 /* FALLTHROUGH */ 1631 case 2: 1632 argv++; 1633 if (!*argv || *argv[0] == '\0') { 1634 if (!silent) 1635 (void) fprintf(el->el_errfile, 1636 "echotc: Warning: Missing argument.\n"); 1637 return -1; 1638 } 1639 i = wcstol(*argv, &ep, 10); 1640 if (*ep != '\0' || i < 0) { 1641 if (!silent) 1642 (void) fprintf(el->el_errfile, 1643 "echotc: Bad value `%ls' for cols.\n", 1644 *argv); 1645 return -1; 1646 } 1647 arg_cols = (int) i; 1648 argv++; 1649 if (!*argv || *argv[0] == '\0') { 1650 if (!silent) 1651 (void) fprintf(el->el_errfile, 1652 "echotc: Warning: Missing argument.\n"); 1653 return -1; 1654 } 1655 i = wcstol(*argv, &ep, 10); 1656 if (*ep != '\0' || i < 0) { 1657 if (!silent) 1658 (void) fprintf(el->el_errfile, 1659 "echotc: Bad value `%ls' for rows.\n", 1660 *argv); 1661 return -1; 1662 } 1663 arg_rows = (int) i; 1664 if (*ep != '\0') { 1665 if (!silent) 1666 (void) fprintf(el->el_errfile, 1667 "echotc: Bad value `%ls'.\n", *argv); 1668 return -1; 1669 } 1670 argv++; 1671 if (*argv && *argv[0]) { 1672 if (!silent) 1673 (void) fprintf(el->el_errfile, 1674 "echotc: Warning: Extra argument `%ls" 1675 "'.\n", *argv); 1676 return -1; 1677 } 1678 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows); 1679 break; 1680 } 1681 return 0; 1682 } 1683