teken.c revision 206141
1186681Sed/*- 2186681Sed * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org> 3186681Sed * All rights reserved. 4186681Sed * 5186681Sed * Redistribution and use in source and binary forms, with or without 6186681Sed * modification, are permitted provided that the following conditions 7186681Sed * are met: 8186681Sed * 1. Redistributions of source code must retain the above copyright 9186681Sed * notice, this list of conditions and the following disclaimer. 10186681Sed * 2. Redistributions in binary form must reproduce the above copyright 11186681Sed * notice, this list of conditions and the following disclaimer in the 12186681Sed * documentation and/or other materials provided with the distribution. 13186681Sed * 14186681Sed * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15186681Sed * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16186681Sed * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17186681Sed * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18186681Sed * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19186681Sed * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20186681Sed * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21186681Sed * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22186681Sed * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23186681Sed * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24186681Sed * SUCH DAMAGE. 25186681Sed * 26186681Sed * $FreeBSD: head/sys/teken/teken.c 206141 2010-04-03 17:22:28Z ed $ 27186681Sed */ 28186681Sed 29186681Sed#include <sys/cdefs.h> 30186681Sed#if defined(__FreeBSD__) && defined(_KERNEL) 31186681Sed#include <sys/param.h> 32186681Sed#include <sys/lock.h> 33186681Sed#include <sys/systm.h> 34186681Sed#define teken_assert(x) MPASS(x) 35186681Sed#define teken_printf(x,...) 36186681Sed#else /* !(__FreeBSD__ && _KERNEL) */ 37186681Sed#include <sys/types.h> 38186681Sed#include <assert.h> 39206141Sed#include <stdint.h> 40186681Sed#include <stdio.h> 41186681Sed#include <string.h> 42186681Sed#define teken_assert(x) assert(x) 43186681Sed#define teken_printf(x,...) do { \ 44186681Sed if (df != NULL) \ 45186681Sed fprintf(df, x, ## __VA_ARGS__); \ 46186681Sed} while (0) 47186681Sed/* debug messages */ 48186681Sedstatic FILE *df; 49186681Sed#endif /* __FreeBSD__ && _KERNEL */ 50186681Sed 51186681Sed/* Private flags for t_stateflags. */ 52199171Sed#define TS_FIRSTDIGIT 0x0001 /* First numeric digit in escape sequence. */ 53199171Sed#define TS_INSERT 0x0002 /* Insert mode. */ 54199171Sed#define TS_AUTOWRAP 0x0004 /* Autowrap. */ 55199171Sed#define TS_ORIGIN 0x0008 /* Origin mode. */ 56199171Sed#define TS_WRAPPED 0x0010 /* Next character should be printed on col 0. */ 57199171Sed#define TS_8BIT 0x0020 /* UTF-8 disabled. */ 58199171Sed#define TS_CONS25 0x0040 /* cons25 emulation. */ 59199171Sed#define TS_INSTRING 0x0080 /* Inside string. */ 60199171Sed#define TS_CURSORKEYS 0x0100 /* Cursor keys mode. */ 61186681Sed 62186681Sed/* Character that blanks a cell. */ 63186681Sed#define BLANK ' ' 64186681Sed 65197470Sed#include "teken.h" 66197470Sed#include "teken_wcwidth.h" 67197470Sed#include "teken_scs.h" 68197470Sed 69186681Sedstatic teken_state_t teken_state_init; 70186681Sed 71186681Sed/* 72186681Sed * Wrappers for hooks. 73186681Sed */ 74186681Sed 75186681Sedstatic inline void 76186681Sedteken_funcs_bell(teken_t *t) 77186681Sed{ 78186681Sed 79186681Sed t->t_funcs->tf_bell(t->t_softc); 80186681Sed} 81186681Sed 82186681Sedstatic inline void 83186681Sedteken_funcs_cursor(teken_t *t) 84186681Sed{ 85186681Sed 86186681Sed teken_assert(t->t_cursor.tp_row < t->t_winsize.tp_row); 87186681Sed teken_assert(t->t_cursor.tp_col < t->t_winsize.tp_col); 88186681Sed 89186681Sed t->t_funcs->tf_cursor(t->t_softc, &t->t_cursor); 90186681Sed} 91186681Sed 92186681Sedstatic inline void 93186681Sedteken_funcs_putchar(teken_t *t, const teken_pos_t *p, teken_char_t c, 94186681Sed const teken_attr_t *a) 95186681Sed{ 96186681Sed 97186681Sed teken_assert(p->tp_row < t->t_winsize.tp_row); 98186681Sed teken_assert(p->tp_col < t->t_winsize.tp_col); 99186681Sed 100186681Sed t->t_funcs->tf_putchar(t->t_softc, p, c, a); 101186681Sed} 102186681Sed 103186681Sedstatic inline void 104186681Sedteken_funcs_fill(teken_t *t, const teken_rect_t *r, 105186681Sed const teken_char_t c, const teken_attr_t *a) 106186681Sed{ 107186681Sed 108186681Sed teken_assert(r->tr_end.tp_row > r->tr_begin.tp_row); 109186681Sed teken_assert(r->tr_end.tp_row <= t->t_winsize.tp_row); 110186681Sed teken_assert(r->tr_end.tp_col > r->tr_begin.tp_col); 111186681Sed teken_assert(r->tr_end.tp_col <= t->t_winsize.tp_col); 112186681Sed 113186681Sed t->t_funcs->tf_fill(t->t_softc, r, c, a); 114186681Sed} 115186681Sed 116186681Sedstatic inline void 117186681Sedteken_funcs_copy(teken_t *t, const teken_rect_t *r, const teken_pos_t *p) 118186681Sed{ 119186681Sed 120186681Sed teken_assert(r->tr_end.tp_row > r->tr_begin.tp_row); 121186681Sed teken_assert(r->tr_end.tp_row <= t->t_winsize.tp_row); 122186681Sed teken_assert(r->tr_end.tp_col > r->tr_begin.tp_col); 123186681Sed teken_assert(r->tr_end.tp_col <= t->t_winsize.tp_col); 124186681Sed teken_assert(p->tp_row + (r->tr_end.tp_row - r->tr_begin.tp_row) <= t->t_winsize.tp_row); 125186681Sed teken_assert(p->tp_col + (r->tr_end.tp_col - r->tr_begin.tp_col) <= t->t_winsize.tp_col); 126186681Sed 127186681Sed t->t_funcs->tf_copy(t->t_softc, r, p); 128186681Sed} 129186681Sed 130186681Sedstatic inline void 131193184Sedteken_funcs_param(teken_t *t, int cmd, unsigned int value) 132186681Sed{ 133186681Sed 134186681Sed t->t_funcs->tf_param(t->t_softc, cmd, value); 135186681Sed} 136186681Sed 137186681Sedstatic inline void 138186681Sedteken_funcs_respond(teken_t *t, const void *buf, size_t len) 139186681Sed{ 140186681Sed 141186681Sed t->t_funcs->tf_respond(t->t_softc, buf, len); 142186681Sed} 143186681Sed 144186681Sed#include "teken_subr.h" 145186681Sed#include "teken_subr_compat.h" 146186681Sed 147186681Sed/* 148186681Sed * Programming interface. 149186681Sed */ 150186681Sed 151186681Sedvoid 152186681Sedteken_init(teken_t *t, const teken_funcs_t *tf, void *softc) 153186681Sed{ 154186681Sed teken_pos_t tp = { .tp_row = 24, .tp_col = 80 }; 155186681Sed 156186681Sed#if !(defined(__FreeBSD__) && defined(_KERNEL)) 157186681Sed df = fopen("teken.log", "w"); 158186681Sed if (df != NULL) 159186681Sed setvbuf(df, NULL, _IOLBF, BUFSIZ); 160186681Sed#endif /* !(__FreeBSD__ && _KERNEL) */ 161186681Sed 162186681Sed t->t_funcs = tf; 163186681Sed t->t_softc = softc; 164186681Sed 165186681Sed t->t_nextstate = teken_state_init; 166197117Sed t->t_stateflags = 0; 167197117Sed t->t_utf8_left = 0; 168186681Sed 169186681Sed t->t_defattr.ta_format = 0; 170186681Sed t->t_defattr.ta_fgcolor = TC_WHITE; 171186681Sed t->t_defattr.ta_bgcolor = TC_BLACK; 172186681Sed teken_subr_do_reset(t); 173186681Sed 174186681Sed teken_set_winsize(t, &tp); 175186681Sed} 176186681Sed 177186681Sedstatic void 178186681Sedteken_input_char(teken_t *t, teken_char_t c) 179186681Sed{ 180186681Sed 181197853Sed /* 182197853Sed * There is no support for DCS and OSC. Just discard strings 183197853Sed * until we receive characters that may indicate string 184197853Sed * termination. 185197853Sed */ 186197853Sed if (t->t_stateflags & TS_INSTRING) { 187197853Sed switch (c) { 188197853Sed case '\x1B': 189197853Sed t->t_stateflags &= ~TS_INSTRING; 190197853Sed break; 191197853Sed case '\a': 192197853Sed t->t_stateflags &= ~TS_INSTRING; 193197853Sed return; 194197853Sed default: 195197853Sed return; 196197853Sed } 197197853Sed } 198197853Sed 199186681Sed switch (c) { 200186681Sed case '\0': 201186681Sed break; 202186681Sed case '\a': 203186681Sed teken_subr_bell(t); 204186681Sed break; 205186681Sed case '\b': 206186681Sed teken_subr_backspace(t); 207186681Sed break; 208186681Sed case '\n': 209186681Sed case '\x0B': 210186681Sed teken_subr_newline(t); 211186681Sed break; 212186798Sed case '\x0C': 213186798Sed teken_subr_newpage(t); 214186798Sed break; 215187469Sed case '\x0E': 216197117Sed if (t->t_stateflags & TS_CONS25) 217197117Sed t->t_nextstate(t, c); 218197117Sed else 219197520Sed t->t_curscs = 1; 220187469Sed break; 221187469Sed case '\x0F': 222197117Sed if (t->t_stateflags & TS_CONS25) 223197117Sed t->t_nextstate(t, c); 224197117Sed else 225197520Sed t->t_curscs = 0; 226187469Sed break; 227186681Sed case '\r': 228186681Sed teken_subr_carriage_return(t); 229186681Sed break; 230186681Sed case '\t': 231186681Sed teken_subr_horizontal_tab(t); 232186681Sed break; 233186681Sed default: 234186681Sed t->t_nextstate(t, c); 235186681Sed break; 236186681Sed } 237186681Sed 238186681Sed /* Post-processing assertions. */ 239186681Sed teken_assert(t->t_cursor.tp_row >= t->t_originreg.ts_begin); 240186681Sed teken_assert(t->t_cursor.tp_row < t->t_originreg.ts_end); 241186681Sed teken_assert(t->t_cursor.tp_row < t->t_winsize.tp_row); 242186681Sed teken_assert(t->t_cursor.tp_col < t->t_winsize.tp_col); 243186681Sed teken_assert(t->t_saved_cursor.tp_row < t->t_winsize.tp_row); 244186681Sed teken_assert(t->t_saved_cursor.tp_col < t->t_winsize.tp_col); 245186681Sed teken_assert(t->t_scrollreg.ts_end <= t->t_winsize.tp_row); 246186681Sed teken_assert(t->t_scrollreg.ts_begin < t->t_scrollreg.ts_end); 247186681Sed /* Origin region has to be window size or the same as scrollreg. */ 248186681Sed teken_assert((t->t_originreg.ts_begin == t->t_scrollreg.ts_begin && 249186681Sed t->t_originreg.ts_end == t->t_scrollreg.ts_end) || 250186681Sed (t->t_originreg.ts_begin == 0 && 251186681Sed t->t_originreg.ts_end == t->t_winsize.tp_row)); 252186681Sed} 253186681Sed 254186681Sedstatic void 255186681Sedteken_input_byte(teken_t *t, unsigned char c) 256186681Sed{ 257186681Sed 258186681Sed /* 259186681Sed * UTF-8 handling. 260186681Sed */ 261197117Sed if ((c & 0x80) == 0x00 || t->t_stateflags & TS_8BIT) { 262186681Sed /* One-byte sequence. */ 263186681Sed t->t_utf8_left = 0; 264186681Sed teken_input_char(t, c); 265186681Sed } else if ((c & 0xe0) == 0xc0) { 266186681Sed /* Two-byte sequence. */ 267186681Sed t->t_utf8_left = 1; 268186681Sed t->t_utf8_partial = c & 0x1f; 269186681Sed } else if ((c & 0xf0) == 0xe0) { 270186681Sed /* Three-byte sequence. */ 271186681Sed t->t_utf8_left = 2; 272186681Sed t->t_utf8_partial = c & 0x0f; 273186681Sed } else if ((c & 0xf8) == 0xf0) { 274186681Sed /* Four-byte sequence. */ 275186681Sed t->t_utf8_left = 3; 276186681Sed t->t_utf8_partial = c & 0x07; 277186681Sed } else if ((c & 0xc0) == 0x80) { 278186681Sed if (t->t_utf8_left == 0) 279186681Sed return; 280186681Sed t->t_utf8_left--; 281186681Sed t->t_utf8_partial = (t->t_utf8_partial << 6) | (c & 0x3f); 282186681Sed if (t->t_utf8_left == 0) { 283194293Sed teken_printf("Got UTF-8 char %x\n", t->t_utf8_partial); 284186681Sed teken_input_char(t, t->t_utf8_partial); 285186681Sed } 286186681Sed } 287186681Sed} 288186681Sed 289186681Sedvoid 290186681Sedteken_input(teken_t *t, const void *buf, size_t len) 291186681Sed{ 292186681Sed const char *c = buf; 293186681Sed 294186681Sed while (len-- > 0) 295186681Sed teken_input_byte(t, *c++); 296186681Sed} 297186681Sed 298197117Sedconst teken_pos_t * 299197117Sedteken_get_cursor(teken_t *t) 300197117Sed{ 301197117Sed 302197117Sed return (&t->t_cursor); 303197117Sed} 304197117Sed 305186681Sedvoid 306186681Sedteken_set_cursor(teken_t *t, const teken_pos_t *p) 307186681Sed{ 308186681Sed 309186681Sed /* XXX: bounds checking with originreg! */ 310186681Sed teken_assert(p->tp_row < t->t_winsize.tp_row); 311186681Sed teken_assert(p->tp_col < t->t_winsize.tp_col); 312186681Sed 313186681Sed t->t_cursor = *p; 314186681Sed} 315186681Sed 316188391Sedconst teken_attr_t * 317188391Sedteken_get_curattr(teken_t *t) 318188391Sed{ 319188391Sed 320188391Sed return (&t->t_curattr); 321188391Sed} 322188391Sed 323189617Sedvoid 324189617Sedteken_set_curattr(teken_t *t, const teken_attr_t *a) 325189617Sed{ 326189617Sed 327189617Sed t->t_curattr = *a; 328189617Sed} 329189617Sed 330188391Sedconst teken_attr_t * 331188391Sedteken_get_defattr(teken_t *t) 332188391Sed{ 333188391Sed 334188391Sed return (&t->t_defattr); 335188391Sed} 336188391Sed 337186681Sedvoid 338186681Sedteken_set_defattr(teken_t *t, const teken_attr_t *a) 339186681Sed{ 340186681Sed 341186681Sed t->t_curattr = t->t_saved_curattr = t->t_defattr = *a; 342186681Sed} 343186681Sed 344197117Sedconst teken_pos_t * 345197117Sedteken_get_winsize(teken_t *t) 346197117Sed{ 347197117Sed 348197117Sed return (&t->t_winsize); 349197117Sed} 350197117Sed 351186681Sedvoid 352186681Sedteken_set_winsize(teken_t *t, const teken_pos_t *p) 353186681Sed{ 354186681Sed 355186681Sed t->t_winsize = *p; 356197114Sed teken_subr_do_reset(t); 357186681Sed} 358186681Sed 359197115Sedvoid 360197115Sedteken_set_8bit(teken_t *t) 361197115Sed{ 362197115Sed 363197117Sed t->t_stateflags |= TS_8BIT; 364197115Sed} 365197115Sed 366197117Sedvoid 367197117Sedteken_set_cons25(teken_t *t) 368197117Sed{ 369197117Sed 370197117Sed t->t_stateflags |= TS_CONS25; 371197117Sed} 372197117Sed 373186681Sed/* 374186681Sed * State machine. 375186681Sed */ 376186681Sed 377186681Sedstatic void 378186681Sedteken_state_switch(teken_t *t, teken_state_t *s) 379186681Sed{ 380186681Sed 381186681Sed t->t_nextstate = s; 382186681Sed t->t_curnum = 0; 383186681Sed t->t_stateflags |= TS_FIRSTDIGIT; 384186681Sed} 385186681Sed 386186681Sedstatic int 387186681Sedteken_state_numbers(teken_t *t, teken_char_t c) 388186681Sed{ 389186681Sed 390186681Sed teken_assert(t->t_curnum < T_NUMSIZE); 391186681Sed 392186681Sed if (c >= '0' && c <= '9') { 393186681Sed /* 394186681Sed * Don't do math with the default value of 1 when a 395186681Sed * custom number is inserted. 396186681Sed */ 397186681Sed if (t->t_stateflags & TS_FIRSTDIGIT) { 398186681Sed t->t_stateflags &= ~TS_FIRSTDIGIT; 399186681Sed t->t_nums[t->t_curnum] = 0; 400186681Sed } else { 401186681Sed t->t_nums[t->t_curnum] *= 10; 402186681Sed } 403186681Sed 404186681Sed t->t_nums[t->t_curnum] += c - '0'; 405186681Sed return (1); 406186681Sed } else if (c == ';') { 407186681Sed if (t->t_stateflags & TS_FIRSTDIGIT) 408186681Sed t->t_nums[t->t_curnum] = 0; 409186681Sed 410186681Sed /* Only allow a limited set of arguments. */ 411186681Sed if (++t->t_curnum == T_NUMSIZE) { 412186681Sed teken_state_switch(t, teken_state_init); 413186681Sed return (1); 414186681Sed } 415186681Sed 416186681Sed t->t_stateflags |= TS_FIRSTDIGIT; 417186681Sed return (1); 418186681Sed } else { 419186681Sed if (t->t_stateflags & TS_FIRSTDIGIT && t->t_curnum > 0) { 420186681Sed /* Finish off the last empty argument. */ 421186681Sed t->t_nums[t->t_curnum] = 0; 422186681Sed t->t_curnum++; 423186681Sed } else if ((t->t_stateflags & TS_FIRSTDIGIT) == 0) { 424186681Sed /* Also count the last argument. */ 425186681Sed t->t_curnum++; 426186681Sed } 427186681Sed } 428186681Sed 429186681Sed return (0); 430186681Sed} 431186681Sed 432197522Sedteken_color_t 433197522Sedteken_256to8(teken_color_t c) 434197522Sed{ 435197522Sed unsigned int r, g, b; 436197522Sed 437197522Sed if (c < 16) { 438197522Sed /* Traditional color indices. */ 439197522Sed return (c % 8); 440197522Sed } else if (c >= 244) { 441197522Sed /* Upper grayscale colors. */ 442197522Sed return (TC_WHITE); 443197522Sed } else if (c >= 232) { 444197522Sed /* Lower grayscale colors. */ 445197522Sed return (TC_BLACK); 446197522Sed } 447197522Sed 448197522Sed /* Convert to RGB. */ 449197522Sed c -= 16; 450197522Sed b = c % 6; 451197522Sed g = (c / 6) % 6; 452197522Sed r = c / 36; 453197522Sed 454197522Sed if (r < g) { 455197522Sed /* Possibly green. */ 456197522Sed if (g < b) 457197522Sed return (TC_BLUE); 458197522Sed else if (g > b) 459197522Sed return (TC_GREEN); 460197522Sed else 461197522Sed return (TC_CYAN); 462197522Sed } else if (r > g) { 463197522Sed /* Possibly red. */ 464197522Sed if (r < b) 465197522Sed return (TC_BLUE); 466197522Sed else if (r > b) 467197522Sed return (TC_RED); 468197522Sed else 469197522Sed return (TC_MAGENTA); 470197522Sed } else { 471197522Sed /* Possibly brown. */ 472197522Sed if (g < b) 473197522Sed return (TC_BLUE); 474197522Sed else if (g > b) 475197522Sed return (TC_BROWN); 476197522Sed else if (r < 3) 477197522Sed return (TC_BLACK); 478197522Sed else 479197522Sed return (TC_WHITE); 480197522Sed } 481197522Sed} 482197522Sed 483199171Sedstatic const char * const special_strings_cons25[] = { 484199171Sed [TKEY_UP] = "\x1B[A", [TKEY_DOWN] = "\x1B[B", 485199171Sed [TKEY_LEFT] = "\x1B[D", [TKEY_RIGHT] = "\x1B[C", 486199171Sed 487199175Sed [TKEY_HOME] = "\x1B[H", [TKEY_END] = "\x1B[F", 488199171Sed [TKEY_INSERT] = "\x1B[L", [TKEY_DELETE] = "\x7F", 489199171Sed [TKEY_PAGE_UP] = "\x1B[I", [TKEY_PAGE_DOWN] = "\x1B[G", 490199171Sed 491199171Sed [TKEY_F1] = "\x1B[M", [TKEY_F2] = "\x1B[N", 492199171Sed [TKEY_F3] = "\x1B[O", [TKEY_F4] = "\x1B[P", 493199171Sed [TKEY_F5] = "\x1B[Q", [TKEY_F6] = "\x1B[R", 494199171Sed [TKEY_F7] = "\x1B[S", [TKEY_F8] = "\x1B[T", 495199171Sed [TKEY_F9] = "\x1B[U", [TKEY_F10] = "\x1B[V", 496199171Sed [TKEY_F11] = "\x1B[W", [TKEY_F12] = "\x1B[X", 497199171Sed}; 498199171Sed 499199171Sedstatic const char * const special_strings_ckeys[] = { 500199171Sed [TKEY_UP] = "\x1BOA", [TKEY_DOWN] = "\x1BOB", 501199171Sed [TKEY_LEFT] = "\x1BOD", [TKEY_RIGHT] = "\x1BOC", 502199171Sed 503199171Sed [TKEY_HOME] = "\x1BOH", [TKEY_END] = "\x1BOF", 504199171Sed}; 505199171Sed 506199171Sedstatic const char * const special_strings_normal[] = { 507199171Sed [TKEY_UP] = "\x1B[A", [TKEY_DOWN] = "\x1B[B", 508199171Sed [TKEY_LEFT] = "\x1B[D", [TKEY_RIGHT] = "\x1B[C", 509199171Sed 510199175Sed [TKEY_HOME] = "\x1B[H", [TKEY_END] = "\x1B[F", 511199171Sed [TKEY_INSERT] = "\x1B[2~", [TKEY_DELETE] = "\x1B[3~", 512199171Sed [TKEY_PAGE_UP] = "\x1B[5~", [TKEY_PAGE_DOWN] = "\x1B[6~", 513199171Sed 514199171Sed [TKEY_F1] = "\x1BOP", [TKEY_F2] = "\x1BOQ", 515199171Sed [TKEY_F3] = "\x1BOR", [TKEY_F4] = "\x1BOS", 516199171Sed [TKEY_F5] = "\x1B[15~", [TKEY_F6] = "\x1B[17~", 517199171Sed [TKEY_F7] = "\x1B[18~", [TKEY_F8] = "\x1B[19~", 518199171Sed [TKEY_F9] = "\x1B[20~", [TKEY_F10] = "\x1B[21~", 519199171Sed [TKEY_F11] = "\x1B[23~", [TKEY_F12] = "\x1B[24~", 520199171Sed}; 521199171Sed 522199171Sedconst char * 523199171Sedteken_get_sequence(teken_t *t, unsigned int k) 524199171Sed{ 525199171Sed 526199171Sed /* Cons25 mode. */ 527199171Sed if (t->t_stateflags & TS_CONS25 && 528199171Sed k < sizeof special_strings_cons25 / sizeof(char *)) 529199171Sed return (special_strings_cons25[k]); 530199171Sed 531199171Sed /* Cursor keys mode. */ 532199171Sed if (t->t_stateflags & TS_CURSORKEYS && 533199171Sed k < sizeof special_strings_ckeys / sizeof(char *)) 534199171Sed return (special_strings_ckeys[k]); 535199171Sed 536199171Sed /* Default xterm sequences. */ 537199171Sed if (k < sizeof special_strings_normal / sizeof(char *)) 538199171Sed return (special_strings_normal[k]); 539199171Sed 540199171Sed return (NULL); 541199171Sed} 542199171Sed 543186681Sed#include "teken_state.h" 544