| 1 | /* terminal control module for terminals described by TERMCAP |
| 2 | Copyright (C) 1985, 1986, 1987 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GNU Emacs. |
| 5 | |
| 6 | GNU Emacs is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 1, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GNU Emacs is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GNU Emacs; see the file COPYING. If not, write to |
| 18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | |
| 21 | #include <stdio.h> |
| 22 | #include <ctype.h> |
| 23 | #include "config.h" |
| 24 | #include "termchar.h" |
| 25 | #include "termopts.h" |
| 26 | #include "cm.h" |
| 27 | #undef NULL |
| 28 | #include "lisp.h" |
| 29 | #include "screen.h" |
| 30 | #include "disptab.h" |
| 31 | #include "termhooks.h" |
| 32 | #include "keyboard.h" |
| 33 | |
| 34 | #define max(a, b) ((a) > (b) ? (a) : (b)) |
| 35 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
| 36 | |
| 37 | #define OUTPUT(a) tputs (a, SCREEN_HEIGHT (selected_screen) - curY, cmputc) |
| 38 | #define OUTPUT1(a) tputs (a, 1, cmputc) |
| 39 | #define OUTPUTL(a, lines) tputs (a, lines, cmputc) |
| 40 | #define OUTPUT_IF(a) { if (a) tputs (a, SCREEN_HEIGHT (selected_screen) - curY, cmputc); } |
| 41 | #define OUTPUT1_IF(a) { if (a) tputs (a, 1, cmputc); } |
| 42 | |
| 43 | /* Terminal charateristics that higher levels want to look at. |
| 44 | These are all extern'd in termchar.h */ |
| 45 | |
| 46 | #ifndef MULTI_SCREEN |
| 47 | int screen_width; /* Number of usable columns */ |
| 48 | int screen_height; /* Number of lines */ |
| 49 | #endif |
| 50 | |
| 51 | int must_write_spaces; /* Nonzero means spaces in the text |
| 52 | must actually be output; can't just skip |
| 53 | over some columns to leave them blank. */ |
| 54 | int min_padding_speed; /* Speed below which no padding necessary */ |
| 55 | |
| 56 | int line_ins_del_ok; /* Terminal can insert and delete lines */ |
| 57 | int char_ins_del_ok; /* Terminal can insert and delete chars */ |
| 58 | int scroll_region_ok; /* Terminal supports setting the |
| 59 | scroll window */ |
| 60 | int memory_below_screen; /* Terminal remembers lines |
| 61 | scrolled off bottom */ |
| 62 | int fast_clear_end_of_line; /* Terminal has a `ce' string */ |
| 63 | |
| 64 | int dont_calculate_costs; /* Nonzero means don't bother computing */ |
| 65 | /* various cost tables; we won't use them. */ |
| 66 | |
| 67 | /* Nonzero means no need to redraw the entire screen on resuming |
| 68 | a suspended Emacs. This is useful on terminals with multiple pages, |
| 69 | where one page is used for Emacs and another for all else. */ |
| 70 | int no_redraw_on_reenter; |
| 71 | |
| 72 | /* Hook functions that you can set to snap out the functions in this file. |
| 73 | These are all extern'd in termhooks.h */ |
| 74 | |
| 75 | int (*cursor_to_hook) (); |
| 76 | int (*raw_cursor_to_hook) (); |
| 77 | |
| 78 | int (*clear_to_end_hook) (); |
| 79 | int (*clear_screen_hook) (); |
| 80 | int (*clear_end_of_line_hook) (); |
| 81 | |
| 82 | int (*ins_del_lines_hook) (); |
| 83 | |
| 84 | int (*change_line_highlight_hook) (); |
| 85 | int (*reassert_line_highlight_hook) (); |
| 86 | |
| 87 | int (*insert_glyphs_hook) (); |
| 88 | int (*write_glyphs_hook) (); |
| 89 | int (*delete_glyphs_hook) (); |
| 90 | |
| 91 | int (*ring_bell_hook) (); |
| 92 | |
| 93 | int (*reset_terminal_modes_hook) (); |
| 94 | int (*set_terminal_modes_hook) (); |
| 95 | int (*update_begin_hook) (); |
| 96 | int (*update_end_hook) (); |
| 97 | int (*set_terminal_window_hook) (); |
| 98 | |
| 99 | int (*read_socket_hook) (); |
| 100 | |
| 101 | /* Return the current position of the mouse. This should clear |
| 102 | mouse_moved until the next motion event arrives. */ |
| 103 | void (*mouse_position_hook) ( /* SCREEN_PTR *s, |
| 104 | Lisp_Object *x, |
| 105 | Lisp_Object *y, |
| 106 | Lisp_Object *time */ ); |
| 107 | |
| 108 | /* When reading from a minibuffer in a different screen, Emacs wants |
| 109 | to shift the highlight from the selected screen to the minibuffer's |
| 110 | screen; under X, this means it lies about where the focus is. |
| 111 | This hook tells the window system code to re-decide where to put |
| 112 | the highlight. */ |
| 113 | void (*screen_rehighlight_hook) ( /* SCREEN_PTR s */ ); |
| 114 | |
| 115 | /* Strings, numbers and flags taken from the termcap entry. */ |
| 116 | |
| 117 | char *TS_ins_line; /* termcap "al" */ |
| 118 | char *TS_ins_multi_lines; /* "AL" (one parameter, # lines to insert) */ |
| 119 | char *TS_bell; /* "bl" */ |
| 120 | char *TS_clr_to_bottom; /* "cd" */ |
| 121 | char *TS_clr_line; /* "ce", clear to end of line */ |
| 122 | char *TS_clr_screen; /* "cl" */ |
| 123 | char *TS_set_scroll_region; /* "cs" (2 params, first line and last line) */ |
| 124 | char *TS_set_scroll_region_1; /* "cS" (4 params: total lines, |
| 125 | lines above scroll region, lines below it, |
| 126 | total lines again) */ |
| 127 | char *TS_del_char; /* "dc" */ |
| 128 | char *TS_del_multi_chars; /* "DC" (one parameter, # chars to delete) */ |
| 129 | char *TS_del_line; /* "dl" */ |
| 130 | char *TS_del_multi_lines; /* "DL" (one parameter, # lines to delete) */ |
| 131 | char *TS_delete_mode; /* "dm", enter character-delete mode */ |
| 132 | char *TS_end_delete_mode; /* "ed", leave character-delete mode */ |
| 133 | char *TS_end_insert_mode; /* "ei", leave character-insert mode */ |
| 134 | char *TS_ins_char; /* "ic" */ |
| 135 | char *TS_ins_multi_chars; /* "IC" (one parameter, # chars to insert) */ |
| 136 | char *TS_insert_mode; /* "im", enter character-insert mode */ |
| 137 | char *TS_pad_inserted_char; /* "ip". Just padding, no commands. */ |
| 138 | char *TS_end_keypad_mode; /* "ke" */ |
| 139 | char *TS_keypad_mode; /* "ks" */ |
| 140 | char *TS_pad_char; /* "pc", char to use as padding */ |
| 141 | char *TS_repeat; /* "rp" (2 params, # times to repeat |
| 142 | and character to be repeated) */ |
| 143 | char *TS_end_standout_mode; /* "se" */ |
| 144 | char *TS_fwd_scroll; /* "sf" */ |
| 145 | char *TS_standout_mode; /* "so" */ |
| 146 | char *TS_rev_scroll; /* "sr" */ |
| 147 | char *TS_end_termcap_modes; /* "te" */ |
| 148 | char *TS_termcap_modes; /* "ti" */ |
| 149 | char *TS_visible_bell; /* "vb" */ |
| 150 | char *TS_end_visual_mode; /* "ve" */ |
| 151 | char *TS_visual_mode; /* "vi" */ |
| 152 | char *TS_set_window; /* "wi" (4 params, start and end of window, |
| 153 | each as vpos and hpos) */ |
| 154 | |
| 155 | int TF_hazeltine; /* termcap hz flag. */ |
| 156 | int TF_insmode_motion; /* termcap mi flag: can move while in insert mode. */ |
| 157 | int TF_standout_motion; /* termcap mi flag: can move while in standout mode. */ |
| 158 | int TF_underscore; /* termcap ul flag: _ underlines if overstruck on |
| 159 | nonblank position. Must clear before writing _. */ |
| 160 | int TF_teleray; /* termcap xt flag: many weird consequences. |
| 161 | For t1061. */ |
| 162 | |
| 163 | int TF_xs; /* Nonzero for "xs". If set together with |
| 164 | TN_standout_width == 0, it means don't bother |
| 165 | to write any end-standout cookies. */ |
| 166 | |
| 167 | int TN_standout_width; /* termcap sg number: width occupied by standout |
| 168 | markers */ |
| 169 | |
| 170 | static int RPov; /* # chars to start a TS_repeat */ |
| 171 | |
| 172 | static int delete_in_insert_mode; /* delete mode == insert mode */ |
| 173 | |
| 174 | static int se_is_so; /* 1 if same string both enters and leaves |
| 175 | standout mode */ |
| 176 | |
| 177 | /* internal state */ |
| 178 | |
| 179 | /* Number of chars of space used for standout marker at beginning of line, |
| 180 | or'd with 0100. Zero if no standout marker at all. |
| 181 | |
| 182 | Used IFF TN_standout_width >= 0. */ |
| 183 | |
| 184 | static char *chars_wasted; |
| 185 | static char *copybuf; |
| 186 | |
| 187 | /* nonzero means supposed to write text in standout mode. */ |
| 188 | int standout_requested; |
| 189 | |
| 190 | int insert_mode; /* Nonzero when in insert mode. */ |
| 191 | int standout_mode; /* Nonzero when in standout mode. */ |
| 192 | |
| 193 | /* Size of window specified by higher levels. |
| 194 | This is the number of lines, from the top of screen downwards, |
| 195 | which can participate in insert-line/delete-line operations. |
| 196 | |
| 197 | Effectively it excludes the bottom screen_height - specified_window_size |
| 198 | lines from those operations. */ |
| 199 | |
| 200 | int specified_window; |
| 201 | |
| 202 | /* Screen currently being redisplayed; 0 if not currently redisplaying. |
| 203 | (Direct output does not count). */ |
| 204 | |
| 205 | SCREEN_PTR updating_screen; |
| 206 | |
| 207 | char *tparam (); |
| 208 | \f |
| 209 | ring_bell () |
| 210 | { |
| 211 | if (! SCREEN_IS_TERMCAP (selected_screen)) |
| 212 | { |
| 213 | (*ring_bell_hook) (); |
| 214 | return; |
| 215 | } |
| 216 | OUTPUT (TS_visible_bell && visible_bell ? TS_visible_bell : TS_bell); |
| 217 | } |
| 218 | |
| 219 | set_terminal_modes () |
| 220 | { |
| 221 | if (! SCREEN_IS_TERMCAP (selected_screen)) |
| 222 | { |
| 223 | (*set_terminal_modes_hook) (); |
| 224 | return; |
| 225 | } |
| 226 | OUTPUT_IF (TS_termcap_modes); |
| 227 | OUTPUT_IF (TS_visual_mode); |
| 228 | OUTPUT_IF (TS_keypad_mode); |
| 229 | losecursor (); |
| 230 | } |
| 231 | |
| 232 | reset_terminal_modes () |
| 233 | { |
| 234 | if (! SCREEN_IS_TERMCAP (selected_screen)) |
| 235 | { |
| 236 | (*reset_terminal_modes_hook) (); |
| 237 | return; |
| 238 | } |
| 239 | if (TN_standout_width < 0) |
| 240 | turn_off_highlight (); |
| 241 | turn_off_insert (); |
| 242 | OUTPUT_IF (TS_end_keypad_mode); |
| 243 | OUTPUT_IF (TS_end_visual_mode); |
| 244 | OUTPUT_IF (TS_end_termcap_modes); |
| 245 | /* Output raw CR so kernel can track the cursor hpos. */ |
| 246 | /* But on magic-cookie terminals this can erase an end-standout marker and |
| 247 | cause the rest of the screen to be in standout, so move down first. */ |
| 248 | if (TN_standout_width >= 0) |
| 249 | cmputc ('\n'); |
| 250 | cmputc ('\r'); |
| 251 | } |
| 252 | |
| 253 | update_begin (s) |
| 254 | SCREEN_PTR s; |
| 255 | { |
| 256 | updating_screen = s; |
| 257 | if (! SCREEN_IS_TERMCAP (updating_screen)) |
| 258 | (*update_begin_hook) (s); |
| 259 | } |
| 260 | |
| 261 | update_end (s) |
| 262 | SCREEN_PTR s; |
| 263 | { |
| 264 | if (! SCREEN_IS_TERMCAP (updating_screen)) |
| 265 | { |
| 266 | (*update_end_hook) (s); |
| 267 | updating_screen = 0; |
| 268 | return; |
| 269 | } |
| 270 | turn_off_insert (); |
| 271 | background_highlight (); |
| 272 | standout_requested = 0; |
| 273 | updating_screen = 0; |
| 274 | } |
| 275 | |
| 276 | set_terminal_window (size) |
| 277 | int size; |
| 278 | { |
| 279 | if (! SCREEN_IS_TERMCAP (updating_screen)) |
| 280 | { |
| 281 | (*set_terminal_window_hook) (size); |
| 282 | return; |
| 283 | } |
| 284 | specified_window = size ? size : SCREEN_HEIGHT (selected_screen); |
| 285 | if (!scroll_region_ok) |
| 286 | return; |
| 287 | set_scroll_region (0, specified_window); |
| 288 | } |
| 289 | |
| 290 | set_scroll_region (start, stop) |
| 291 | int start, stop; |
| 292 | { |
| 293 | char *buf; |
| 294 | if (TS_set_scroll_region) |
| 295 | { |
| 296 | buf = tparam (TS_set_scroll_region, 0, 0, start, stop - 1); |
| 297 | } |
| 298 | else if (TS_set_scroll_region_1) |
| 299 | { |
| 300 | buf = tparam (TS_set_scroll_region_1, 0, 0, |
| 301 | SCREEN_HEIGHT (selected_screen), start, |
| 302 | SCREEN_HEIGHT (selected_screen) - stop, |
| 303 | SCREEN_HEIGHT (selected_screen)); |
| 304 | } |
| 305 | else |
| 306 | { |
| 307 | buf = tparam (TS_set_window, 0, 0, start, 0, stop, SCREEN_WIDTH (selected_screen)); |
| 308 | } |
| 309 | OUTPUT (buf); |
| 310 | free (buf); |
| 311 | losecursor (); |
| 312 | } |
| 313 | \f |
| 314 | turn_on_insert () |
| 315 | { |
| 316 | if (!insert_mode) |
| 317 | OUTPUT (TS_insert_mode); |
| 318 | insert_mode = 1; |
| 319 | } |
| 320 | |
| 321 | turn_off_insert () |
| 322 | { |
| 323 | if (insert_mode) |
| 324 | OUTPUT (TS_end_insert_mode); |
| 325 | insert_mode = 0; |
| 326 | } |
| 327 | \f |
| 328 | /* Handle highlighting when TN_standout_width (termcap sg) is not specified. |
| 329 | In these terminals, output is affected by the value of standout |
| 330 | mode when the output is written. |
| 331 | |
| 332 | These functions are called on all terminals, but do nothing |
| 333 | on terminals whose standout mode does not work that way. */ |
| 334 | |
| 335 | turn_off_highlight () |
| 336 | { |
| 337 | if (TN_standout_width < 0) |
| 338 | { |
| 339 | if (standout_mode) |
| 340 | OUTPUT_IF (TS_end_standout_mode); |
| 341 | standout_mode = 0; |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | turn_on_highlight () |
| 346 | { |
| 347 | if (TN_standout_width < 0) |
| 348 | { |
| 349 | if (!standout_mode) |
| 350 | OUTPUT_IF (TS_standout_mode); |
| 351 | standout_mode = 1; |
| 352 | } |
| 353 | } |
| 354 | |
| 355 | /* Set standout mode to the state it should be in for |
| 356 | empty space inside windows. What this is, |
| 357 | depends on the user option inverse-video. */ |
| 358 | |
| 359 | background_highlight () |
| 360 | { |
| 361 | if (TN_standout_width >= 0) |
| 362 | return; |
| 363 | if (inverse_video) |
| 364 | turn_on_highlight (); |
| 365 | else |
| 366 | turn_off_highlight (); |
| 367 | } |
| 368 | |
| 369 | /* Set standout mode to the mode specified for the text to be output. */ |
| 370 | |
| 371 | static |
| 372 | highlight_if_desired () |
| 373 | { |
| 374 | if (TN_standout_width >= 0) |
| 375 | return; |
| 376 | if (!inverse_video == !standout_requested) |
| 377 | turn_off_highlight (); |
| 378 | else |
| 379 | turn_on_highlight (); |
| 380 | } |
| 381 | \f |
| 382 | /* Handle standout mode for terminals in which TN_standout_width >= 0. |
| 383 | On these terminals, standout is controlled by markers that |
| 384 | live inside the screen memory. TN_standout_width is the width |
| 385 | that the marker occupies in memory. Standout runs from the marker |
| 386 | to the end of the line on some terminals, or to the next |
| 387 | turn-off-standout marker (TS_end_standout_mode) string |
| 388 | on other terminals. */ |
| 389 | |
| 390 | /* Write a standout marker or end-standout marker at the front of the line |
| 391 | at vertical position vpos. */ |
| 392 | |
| 393 | write_standout_marker (flag, vpos) |
| 394 | int flag, vpos; |
| 395 | { |
| 396 | if (flag || (TS_end_standout_mode && !TF_teleray && !se_is_so |
| 397 | && !(TF_xs && TN_standout_width == 0))) |
| 398 | { |
| 399 | cmgoto (vpos, 0); |
| 400 | cmplus (TN_standout_width); |
| 401 | OUTPUT (flag ? TS_standout_mode : TS_end_standout_mode); |
| 402 | chars_wasted[curY] = TN_standout_width | 0100; |
| 403 | } |
| 404 | } |
| 405 | \f |
| 406 | /* External interface to control of standout mode. |
| 407 | Call this when about to modify line at position VPOS |
| 408 | and not change whether it is highlighted. */ |
| 409 | |
| 410 | reassert_line_highlight (highlight, vpos) |
| 411 | int highlight; |
| 412 | int vpos; |
| 413 | { |
| 414 | if (! SCREEN_IS_TERMCAP ((updating_screen ? updating_screen : selected_screen))) |
| 415 | { |
| 416 | (*reassert_line_highlight_hook) (highlight, vpos); |
| 417 | return; |
| 418 | } |
| 419 | if (TN_standout_width < 0) |
| 420 | /* Handle terminals where standout takes affect at output time */ |
| 421 | standout_requested = highlight; |
| 422 | else if (chars_wasted[vpos] == 0) |
| 423 | /* For terminals with standout markers, write one on this line |
| 424 | if there isn't one already. */ |
| 425 | write_standout_marker (highlight, vpos); |
| 426 | } |
| 427 | |
| 428 | /* Call this when about to modify line at position VPOS |
| 429 | and change whether it is highlighted. */ |
| 430 | |
| 431 | change_line_highlight (new_highlight, vpos, first_unused_hpos) |
| 432 | int new_highlight, vpos, first_unused_hpos; |
| 433 | { |
| 434 | standout_requested = new_highlight; |
| 435 | if (! SCREEN_IS_TERMCAP (updating_screen)) |
| 436 | { |
| 437 | (*change_line_highlight_hook) (new_highlight, vpos, first_unused_hpos); |
| 438 | return; |
| 439 | } |
| 440 | |
| 441 | cursor_to (vpos, 0); |
| 442 | |
| 443 | if (TN_standout_width < 0) |
| 444 | background_highlight (); |
| 445 | /* If line starts with a marker, delete the marker */ |
| 446 | else if (TS_clr_line && chars_wasted[curY]) |
| 447 | { |
| 448 | turn_off_insert (); |
| 449 | /* On Teleray, make sure to erase the SO marker. */ |
| 450 | if (TF_teleray) |
| 451 | { |
| 452 | cmgoto (curY - 1, SCREEN_WIDTH (selected_screen) - 4); |
| 453 | OUTPUT ("\033S"); |
| 454 | curY++; /* ESC S moves to next line where the TS_standout_mode was */ |
| 455 | curX = 0; |
| 456 | } |
| 457 | else |
| 458 | cmgoto (curY, 0); /* reposition to kill standout marker */ |
| 459 | } |
| 460 | clear_end_of_line_raw (first_unused_hpos); |
| 461 | reassert_line_highlight (new_highlight, curY); |
| 462 | } |
| 463 | \f |
| 464 | |
| 465 | /* Move to absolute position, specified origin 0 */ |
| 466 | |
| 467 | cursor_to (row, col) |
| 468 | { |
| 469 | if (! SCREEN_IS_TERMCAP ((updating_screen |
| 470 | ? updating_screen |
| 471 | : selected_screen)) |
| 472 | && cursor_to_hook) |
| 473 | { |
| 474 | (*cursor_to_hook) (row, col); |
| 475 | return; |
| 476 | } |
| 477 | |
| 478 | col += chars_wasted[row] & 077; |
| 479 | if (curY == row && curX == col) |
| 480 | return; |
| 481 | if (!TF_standout_motion) |
| 482 | background_highlight (); |
| 483 | if (!TF_insmode_motion) |
| 484 | turn_off_insert (); |
| 485 | cmgoto (row, col); |
| 486 | } |
| 487 | |
| 488 | /* Similar but don't take any account of the wasted characters. */ |
| 489 | |
| 490 | raw_cursor_to (row, col) |
| 491 | { |
| 492 | if (! SCREEN_IS_TERMCAP ((updating_screen ? updating_screen : selected_screen))) |
| 493 | { |
| 494 | (*raw_cursor_to_hook) (row, col); |
| 495 | return; |
| 496 | } |
| 497 | if (curY == row && curX == col) |
| 498 | return; |
| 499 | if (!TF_standout_motion) |
| 500 | background_highlight (); |
| 501 | if (!TF_insmode_motion) |
| 502 | turn_off_insert (); |
| 503 | cmgoto (row, col); |
| 504 | } |
| 505 | \f |
| 506 | /* Erase operations */ |
| 507 | |
| 508 | /* clear from cursor to end of screen */ |
| 509 | clear_to_end () |
| 510 | { |
| 511 | register int i; |
| 512 | |
| 513 | if (clear_to_end_hook && SCREEN_IS_TERMCAP (updating_screen)) |
| 514 | { |
| 515 | (*clear_to_end_hook) (); |
| 516 | return; |
| 517 | } |
| 518 | if (TS_clr_to_bottom) |
| 519 | { |
| 520 | background_highlight (); |
| 521 | OUTPUT (TS_clr_to_bottom); |
| 522 | bzero (chars_wasted + curY, SCREEN_HEIGHT (selected_screen) - curY); |
| 523 | } |
| 524 | else |
| 525 | { |
| 526 | for (i = curY; i < SCREEN_HEIGHT (selected_screen); i++) |
| 527 | { |
| 528 | cursor_to (i, 0); |
| 529 | clear_end_of_line_raw (SCREEN_WIDTH (selected_screen)); |
| 530 | } |
| 531 | } |
| 532 | } |
| 533 | |
| 534 | /* Clear entire screen */ |
| 535 | |
| 536 | clear_screen () |
| 537 | { |
| 538 | if (clear_screen_hook |
| 539 | && ! SCREEN_IS_TERMCAP ((updating_screen ? updating_screen : selected_screen))) |
| 540 | { |
| 541 | (*clear_screen_hook) (); |
| 542 | return; |
| 543 | } |
| 544 | if (TS_clr_screen) |
| 545 | { |
| 546 | background_highlight (); |
| 547 | OUTPUT (TS_clr_screen); |
| 548 | bzero (chars_wasted, SCREEN_HEIGHT (selected_screen)); |
| 549 | cmat (0, 0); |
| 550 | } |
| 551 | else |
| 552 | { |
| 553 | cursor_to (0, 0); |
| 554 | clear_to_end (); |
| 555 | } |
| 556 | } |
| 557 | |
| 558 | /* Clear to end of line, but do not clear any standout marker. |
| 559 | Assumes that the cursor is positioned at a character of real text, |
| 560 | which implies it cannot be before a standout marker |
| 561 | unless the marker has zero width. |
| 562 | |
| 563 | Note that the cursor may be moved. */ |
| 564 | |
| 565 | clear_end_of_line (first_unused_hpos) |
| 566 | int first_unused_hpos; |
| 567 | { |
| 568 | static GLYPH buf[1] = {SPACEGLYPH}; |
| 569 | if (SCREEN_IS_TERMCAP (selected_screen) |
| 570 | && TN_standout_width == 0 && curX == 0 && chars_wasted[curY] != 0) |
| 571 | write_glyphs (buf, 1); |
| 572 | clear_end_of_line_raw (first_unused_hpos); |
| 573 | } |
| 574 | |
| 575 | /* Clear from cursor to end of line. |
| 576 | Assume that the line is already clear starting at column first_unused_hpos. |
| 577 | If the cursor is at a standout marker, erase the marker. |
| 578 | |
| 579 | Note that the cursor may be moved, on terminals lacking a `ce' string. */ |
| 580 | |
| 581 | clear_end_of_line_raw (first_unused_hpos) |
| 582 | int first_unused_hpos; |
| 583 | { |
| 584 | register int i; |
| 585 | |
| 586 | if (clear_end_of_line_hook |
| 587 | && ! SCREEN_IS_TERMCAP ((updating_screen |
| 588 | ? updating_screen |
| 589 | : selected_screen))) |
| 590 | { |
| 591 | (*clear_end_of_line_hook) (first_unused_hpos); |
| 592 | return; |
| 593 | } |
| 594 | |
| 595 | first_unused_hpos += chars_wasted[curY] & 077; |
| 596 | if (curX >= first_unused_hpos) |
| 597 | return; |
| 598 | /* Notice if we are erasing a magic cookie */ |
| 599 | if (curX == 0) |
| 600 | chars_wasted[curY] = 0; |
| 601 | background_highlight (); |
| 602 | if (TS_clr_line) |
| 603 | { |
| 604 | OUTPUT1 (TS_clr_line); |
| 605 | } |
| 606 | else |
| 607 | { /* have to do it the hard way */ |
| 608 | turn_off_insert (); |
| 609 | |
| 610 | /* Do not write in last row last col with Autowrap on. */ |
| 611 | if (AutoWrap && curY == SCREEN_HEIGHT (selected_screen) - 1 |
| 612 | && first_unused_hpos == SCREEN_WIDTH (selected_screen)) |
| 613 | first_unused_hpos--; |
| 614 | |
| 615 | for (i = curX; i < first_unused_hpos; i++) |
| 616 | { |
| 617 | if (termscript) |
| 618 | fputc (' ', termscript); |
| 619 | putchar (' '); |
| 620 | } |
| 621 | cmplus (first_unused_hpos - curX); |
| 622 | } |
| 623 | } |
| 624 | \f |
| 625 | |
| 626 | write_glyphs (string, len) |
| 627 | register GLYPH *string; |
| 628 | register int len; |
| 629 | { |
| 630 | register GLYPH g; |
| 631 | register int tlen = GLYPH_TABLE_LENGTH; |
| 632 | register Lisp_Object *tbase = GLYPH_TABLE_BASE; |
| 633 | |
| 634 | if (write_glyphs_hook |
| 635 | && ! SCREEN_IS_TERMCAP ((updating_screen ? updating_screen : selected_screen))) |
| 636 | { |
| 637 | (*write_glyphs_hook) (string, len); |
| 638 | return; |
| 639 | } |
| 640 | |
| 641 | highlight_if_desired (); |
| 642 | turn_off_insert (); |
| 643 | |
| 644 | /* Don't dare write in last column of bottom line, if AutoWrap, |
| 645 | since that would scroll the whole screen on some terminals. */ |
| 646 | |
| 647 | if (AutoWrap |
| 648 | && curY + 1 == SCREEN_HEIGHT (selected_screen) |
| 649 | && (curX + len - (chars_wasted[curY] & 077) |
| 650 | == SCREEN_WIDTH (selected_screen))) |
| 651 | len --; |
| 652 | |
| 653 | cmplus (len); |
| 654 | while (--len >= 0) |
| 655 | { |
| 656 | g = *string++; |
| 657 | /* Check quickly for G beyond length of table. |
| 658 | That implies it isn't an alias and is simple. */ |
| 659 | if (g >= tlen) |
| 660 | { |
| 661 | simple: |
| 662 | putc (g & 0xff, stdout); |
| 663 | if (ferror (stdout)) |
| 664 | clearerr (stdout); |
| 665 | if (termscript) |
| 666 | putc (g & 0xff, termscript); |
| 667 | } |
| 668 | else |
| 669 | { |
| 670 | /* G has an entry in Vglyph_table, |
| 671 | so process any alias and then test for simpleness. */ |
| 672 | while (GLYPH_ALIAS_P (tbase, tlen, g)) |
| 673 | g = GLYPH_ALIAS (tbase, g); |
| 674 | if (GLYPH_SIMPLE_P (tbase, tlen, g)) |
| 675 | goto simple; |
| 676 | else |
| 677 | { |
| 678 | /* Here if G (or its definition as an alias) is not simple. */ |
| 679 | fwrite (GLYPH_STRING (tbase, g), 1, GLYPH_LENGTH (tbase, g), |
| 680 | stdout); |
| 681 | if (ferror (stdout)) |
| 682 | clearerr (stdout); |
| 683 | if (termscript) |
| 684 | fwrite (GLYPH_STRING (tbase, g), 1, GLYPH_LENGTH (tbase, g), |
| 685 | termscript); |
| 686 | } |
| 687 | } |
| 688 | } |
| 689 | } |
| 690 | |
| 691 | /* If start is zero, insert blanks instead of a string at start */ |
| 692 | |
| 693 | insert_glyphs (start, len) |
| 694 | register GLYPH *start; |
| 695 | register int len; |
| 696 | { |
| 697 | char *buf; |
| 698 | register GLYPH g; |
| 699 | register int tlen = GLYPH_TABLE_LENGTH; |
| 700 | register Lisp_Object *tbase = GLYPH_TABLE_BASE; |
| 701 | |
| 702 | if (insert_glyphs_hook && ! SCREEN_IS_TERMCAP (updating_screen)) |
| 703 | { |
| 704 | (*insert_glyphs_hook) (start, len); |
| 705 | return; |
| 706 | } |
| 707 | highlight_if_desired (); |
| 708 | |
| 709 | if (TS_ins_multi_chars) |
| 710 | { |
| 711 | buf = tparam (TS_ins_multi_chars, 0, 0, len); |
| 712 | OUTPUT1 (buf); |
| 713 | free (buf); |
| 714 | if (start) |
| 715 | write_glyphs (start, len); |
| 716 | return; |
| 717 | } |
| 718 | |
| 719 | turn_on_insert (); |
| 720 | cmplus (len); |
| 721 | while (--len >= 0) |
| 722 | { |
| 723 | OUTPUT1_IF (TS_ins_char); |
| 724 | if (!start) |
| 725 | g = SPACEGLYPH; |
| 726 | else |
| 727 | g = *start++; |
| 728 | |
| 729 | if (GLYPH_SIMPLE_P (tbase, tlen, g)) |
| 730 | { |
| 731 | putc (g & 0xff, stdout); |
| 732 | if (ferror (stdout)) |
| 733 | clearerr (stdout); |
| 734 | if (termscript) |
| 735 | putc (g & 0xff, termscript); |
| 736 | } |
| 737 | else |
| 738 | { |
| 739 | fwrite (GLYPH_STRING (tbase, g), 1, GLYPH_LENGTH (tbase, g), stdout); |
| 740 | if (ferror (stdout)) |
| 741 | clearerr (stdout); |
| 742 | if (termscript) |
| 743 | fwrite (GLYPH_STRING (tbase, g), 1, GLYPH_LENGTH (tbase, g), |
| 744 | termscript); |
| 745 | } |
| 746 | |
| 747 | OUTPUT1_IF (TS_pad_inserted_char); |
| 748 | } |
| 749 | } |
| 750 | |
| 751 | delete_glyphs (n) |
| 752 | register int n; |
| 753 | { |
| 754 | char *buf; |
| 755 | register int i; |
| 756 | |
| 757 | if (delete_glyphs_hook && ! SCREEN_IS_TERMCAP (updating_screen)) |
| 758 | { |
| 759 | (*delete_glyphs_hook) (n); |
| 760 | return; |
| 761 | } |
| 762 | |
| 763 | if (delete_in_insert_mode) |
| 764 | { |
| 765 | turn_on_insert (); |
| 766 | } |
| 767 | else |
| 768 | { |
| 769 | turn_off_insert (); |
| 770 | OUTPUT_IF (TS_delete_mode); |
| 771 | } |
| 772 | |
| 773 | if (TS_del_multi_chars) |
| 774 | { |
| 775 | buf = tparam (TS_del_multi_chars, 0, 0, n); |
| 776 | OUTPUT1 (buf); |
| 777 | free (buf); |
| 778 | } |
| 779 | else |
| 780 | for (i = 0; i < n; i++) |
| 781 | OUTPUT1 (TS_del_char); |
| 782 | if (!delete_in_insert_mode) |
| 783 | OUTPUT_IF (TS_end_delete_mode); |
| 784 | } |
| 785 | \f |
| 786 | /* Insert N lines at vpos VPOS. If N is negative, delete -N lines. */ |
| 787 | |
| 788 | ins_del_lines (vpos, n) |
| 789 | int vpos, n; |
| 790 | { |
| 791 | char *multi = n > 0 ? TS_ins_multi_lines : TS_del_multi_lines; |
| 792 | char *single = n > 0 ? TS_ins_line : TS_del_line; |
| 793 | char *scroll = n > 0 ? TS_rev_scroll : TS_fwd_scroll; |
| 794 | |
| 795 | register int i = n > 0 ? n : -n; |
| 796 | register char *buf; |
| 797 | |
| 798 | if (ins_del_lines_hook && ! SCREEN_IS_TERMCAP (updating_screen)) |
| 799 | { |
| 800 | (*ins_del_lines_hook) (vpos, n); |
| 801 | return; |
| 802 | } |
| 803 | |
| 804 | /* If the lines below the insertion are being pushed |
| 805 | into the end of the window, this is the same as clearing; |
| 806 | and we know the lines are already clear, since the matching |
| 807 | deletion has already been done. So can ignore this. */ |
| 808 | /* If the lines below the deletion are blank lines coming |
| 809 | out of the end of the window, don't bother, |
| 810 | as there will be a matching inslines later that will flush them. */ |
| 811 | if (scroll_region_ok && vpos + i >= specified_window) |
| 812 | return; |
| 813 | if (!memory_below_screen && vpos + i >= SCREEN_HEIGHT (selected_screen)) |
| 814 | return; |
| 815 | |
| 816 | if (multi) |
| 817 | { |
| 818 | raw_cursor_to (vpos, 0); |
| 819 | background_highlight (); |
| 820 | buf = tparam (multi, 0, 0, i); |
| 821 | OUTPUT (buf); |
| 822 | free (buf); |
| 823 | } |
| 824 | else if (single) |
| 825 | { |
| 826 | raw_cursor_to (vpos, 0); |
| 827 | background_highlight (); |
| 828 | while (--i >= 0) |
| 829 | OUTPUT (single); |
| 830 | if (TF_teleray) |
| 831 | curX = 0; |
| 832 | } |
| 833 | else |
| 834 | { |
| 835 | set_scroll_region (vpos, specified_window); |
| 836 | if (n < 0) |
| 837 | raw_cursor_to (specified_window - 1, 0); |
| 838 | else |
| 839 | raw_cursor_to (vpos, 0); |
| 840 | background_highlight (); |
| 841 | while (--i >= 0) |
| 842 | OUTPUTL (scroll, specified_window - vpos); |
| 843 | set_scroll_region (0, specified_window); |
| 844 | } |
| 845 | |
| 846 | if (TN_standout_width >= 0) |
| 847 | { |
| 848 | register lower_limit |
| 849 | = (scroll_region_ok |
| 850 | ? specified_window |
| 851 | : SCREEN_HEIGHT (selected_screen)); |
| 852 | |
| 853 | if (n < 0) |
| 854 | { |
| 855 | bcopy (&chars_wasted[vpos - n], &chars_wasted[vpos], |
| 856 | lower_limit - vpos + n); |
| 857 | bzero (&chars_wasted[lower_limit + n], - n); |
| 858 | } |
| 859 | else |
| 860 | { |
| 861 | bcopy (&chars_wasted[vpos], ©buf[vpos], lower_limit - vpos - n); |
| 862 | bcopy (©buf[vpos], &chars_wasted[vpos + n], |
| 863 | lower_limit - vpos - n); |
| 864 | bzero (&chars_wasted[vpos], n); |
| 865 | } |
| 866 | } |
| 867 | if (!scroll_region_ok && memory_below_screen && n < 0) |
| 868 | { |
| 869 | cursor_to (SCREEN_HEIGHT (selected_screen) + n, 0); |
| 870 | clear_to_end (); |
| 871 | } |
| 872 | } |
| 873 | \f |
| 874 | /* Compute cost of sending "str", in characters, |
| 875 | not counting any line-dependent padding. */ |
| 876 | |
| 877 | int |
| 878 | string_cost (str) |
| 879 | char *str; |
| 880 | { |
| 881 | cost = 0; |
| 882 | if (str) |
| 883 | tputs (str, 0, evalcost); |
| 884 | return cost; |
| 885 | } |
| 886 | |
| 887 | /* Compute cost of sending "str", in characters, |
| 888 | counting any line-dependent padding at one line. */ |
| 889 | |
| 890 | static int |
| 891 | string_cost_one_line (str) |
| 892 | char *str; |
| 893 | { |
| 894 | cost = 0; |
| 895 | if (str) |
| 896 | tputs (str, 1, evalcost); |
| 897 | return cost; |
| 898 | } |
| 899 | |
| 900 | /* Compute per line amount of line-dependent padding, |
| 901 | in tenths of characters. */ |
| 902 | |
| 903 | int |
| 904 | per_line_cost (str) |
| 905 | register char *str; |
| 906 | { |
| 907 | cost = 0; |
| 908 | if (str) |
| 909 | tputs (str, 0, evalcost); |
| 910 | cost = - cost; |
| 911 | if (str) |
| 912 | tputs (str, 10, evalcost); |
| 913 | return cost; |
| 914 | } |
| 915 | |
| 916 | #ifndef old |
| 917 | /* char_ins_del_cost[n] is cost of inserting N characters. |
| 918 | char_ins_del_cost[-n] is cost of deleting N characters. */ |
| 919 | |
| 920 | int *char_ins_del_vector; |
| 921 | |
| 922 | #define char_ins_del_cost(s) (&char_ins_del_vector[SCREEN_WIDTH ((s))]) |
| 923 | #endif |
| 924 | |
| 925 | /* ARGSUSED */ |
| 926 | static void |
| 927 | calculate_ins_del_char_costs (screen) |
| 928 | SCREEN_PTR screen; |
| 929 | { |
| 930 | int ins_startup_cost, del_startup_cost; |
| 931 | int ins_cost_per_char, del_cost_per_char; |
| 932 | register int i; |
| 933 | register int *p; |
| 934 | |
| 935 | if (TS_ins_multi_chars) |
| 936 | { |
| 937 | ins_cost_per_char = 0; |
| 938 | ins_startup_cost = string_cost_one_line (TS_ins_multi_chars); |
| 939 | } |
| 940 | else if (TS_ins_char || TS_pad_inserted_char |
| 941 | || (TS_insert_mode && TS_end_insert_mode)) |
| 942 | { |
| 943 | ins_startup_cost = (30 * (string_cost (TS_insert_mode) |
| 944 | + string_cost (TS_end_insert_mode))) / 100; |
| 945 | ins_cost_per_char = (string_cost_one_line (TS_ins_char) |
| 946 | + string_cost_one_line (TS_pad_inserted_char)); |
| 947 | } |
| 948 | else |
| 949 | { |
| 950 | ins_startup_cost = 9999; |
| 951 | ins_cost_per_char = 0; |
| 952 | } |
| 953 | |
| 954 | if (TS_del_multi_chars) |
| 955 | { |
| 956 | del_cost_per_char = 0; |
| 957 | del_startup_cost = string_cost_one_line (TS_del_multi_chars); |
| 958 | } |
| 959 | else if (TS_del_char) |
| 960 | { |
| 961 | del_startup_cost = (string_cost (TS_delete_mode) |
| 962 | + string_cost (TS_end_delete_mode)); |
| 963 | if (delete_in_insert_mode) |
| 964 | del_startup_cost /= 2; |
| 965 | del_cost_per_char = string_cost_one_line (TS_del_char); |
| 966 | } |
| 967 | else |
| 968 | { |
| 969 | del_startup_cost = 9999; |
| 970 | del_cost_per_char = 0; |
| 971 | } |
| 972 | |
| 973 | /* Delete costs are at negative offsets */ |
| 974 | p = &char_ins_del_cost (screen)[0]; |
| 975 | for (i = SCREEN_WIDTH (selected_screen); --i >= 0;) |
| 976 | *--p = (del_startup_cost += del_cost_per_char); |
| 977 | |
| 978 | /* Doing nothing is free */ |
| 979 | p = &char_ins_del_cost (screen)[0]; |
| 980 | *p++ = 0; |
| 981 | |
| 982 | /* Insert costs are at positive offsets */ |
| 983 | for (i = SCREEN_WIDTH (screen); --i >= 0;) |
| 984 | *p++ = (ins_startup_cost += ins_cost_per_char); |
| 985 | } |
| 986 | |
| 987 | #ifdef HAVE_X_WINDOWS |
| 988 | extern int x_screen_planes; |
| 989 | #endif |
| 990 | |
| 991 | calculate_costs (screen) |
| 992 | SCREEN_PTR screen; |
| 993 | { |
| 994 | register char *s = TS_set_scroll_region ? |
| 995 | TS_set_scroll_region |
| 996 | : TS_set_scroll_region_1; |
| 997 | |
| 998 | if (dont_calculate_costs) |
| 999 | return; |
| 1000 | |
| 1001 | #ifdef HAVE_X_WINDOWS |
| 1002 | if (SCREEN_IS_X (screen)) |
| 1003 | { |
| 1004 | do_line_insertion_deletion_costs (screen, 0, ".5*", 0, ".5*", |
| 1005 | 0, 0, x_screen_planes); |
| 1006 | return; |
| 1007 | } |
| 1008 | #endif |
| 1009 | |
| 1010 | /* These variables are only used for terminal stuff. They are allocated |
| 1011 | once for the terminal screen of X-windows emacs, but not used afterwards. |
| 1012 | |
| 1013 | char_ins_del_vector (i.e., char_ins_del_cost) isn't used because |
| 1014 | X turns off char_ins_del_ok. |
| 1015 | |
| 1016 | chars_wasted and copybuf are only used here in term.c in cases where |
| 1017 | the term hook isn't called. */ |
| 1018 | |
| 1019 | if (chars_wasted != 0) |
| 1020 | chars_wasted = (char *) xrealloc (chars_wasted, SCREEN_HEIGHT (screen)); |
| 1021 | else |
| 1022 | chars_wasted = (char *) xmalloc (SCREEN_HEIGHT (screen)); |
| 1023 | |
| 1024 | if (copybuf != 0) |
| 1025 | copybuf = (char *) xrealloc (copybuf, SCREEN_HEIGHT (screen)); |
| 1026 | else |
| 1027 | copybuf = (char *) xmalloc (SCREEN_HEIGHT (screen)); |
| 1028 | |
| 1029 | if (char_ins_del_vector != 0) |
| 1030 | char_ins_del_vector |
| 1031 | = (int *) xrealloc (char_ins_del_vector, |
| 1032 | (sizeof (int) |
| 1033 | + 2 * SCREEN_WIDTH (screen) * sizeof (int))); |
| 1034 | else |
| 1035 | char_ins_del_vector |
| 1036 | = (int *) xmalloc (sizeof (int) |
| 1037 | + 2 * SCREEN_WIDTH (screen) * sizeof (int)); |
| 1038 | |
| 1039 | bzero (chars_wasted, SCREEN_HEIGHT (screen)); |
| 1040 | bzero (copybuf, SCREEN_HEIGHT (screen)); |
| 1041 | bzero (char_ins_del_vector, (sizeof (int) |
| 1042 | + 2 * SCREEN_WIDTH (screen) * sizeof (int))); |
| 1043 | |
| 1044 | if (s && (!TS_ins_line && !TS_del_line)) |
| 1045 | do_line_insertion_deletion_costs (screen, |
| 1046 | TS_rev_scroll, TS_ins_multi_lines, |
| 1047 | TS_fwd_scroll, TS_del_multi_lines, |
| 1048 | s, s, 1); |
| 1049 | else |
| 1050 | do_line_insertion_deletion_costs (screen, |
| 1051 | TS_ins_line, TS_ins_multi_lines, |
| 1052 | TS_del_line, TS_del_multi_lines, |
| 1053 | 0, 0, 1); |
| 1054 | |
| 1055 | calculate_ins_del_char_costs (screen); |
| 1056 | |
| 1057 | /* Don't use TS_repeat if its padding is worse than sending the chars */ |
| 1058 | if (TS_repeat && per_line_cost (TS_repeat) * baud_rate < 9000) |
| 1059 | RPov = string_cost (TS_repeat); |
| 1060 | else |
| 1061 | RPov = SCREEN_WIDTH (screen) * 2; |
| 1062 | |
| 1063 | cmcostinit (); /* set up cursor motion costs */ |
| 1064 | } |
| 1065 | \f |
| 1066 | /* Find the escape codes sent by the function keys for Vfunction_key_map. |
| 1067 | This function scans the termcap function key sequence entries, and |
| 1068 | adds entries to Vfunction_key_map for each function key it finds. */ |
| 1069 | |
| 1070 | void |
| 1071 | term_get_fkeys (address) |
| 1072 | char **address; |
| 1073 | { |
| 1074 | extern char *tgetstr (); |
| 1075 | struct fkey_table { |
| 1076 | char *cap, *name; |
| 1077 | }; |
| 1078 | static struct fkey_table keys[] = { |
| 1079 | "kl", "left", |
| 1080 | "kr", "right", |
| 1081 | "ku", "up", |
| 1082 | "kd", "down", |
| 1083 | "kh", "home", |
| 1084 | "k1", "f1", |
| 1085 | "k2", "f2", |
| 1086 | "k3", "f3", |
| 1087 | "k4", "f4", |
| 1088 | "k5", "f5", |
| 1089 | "k6", "f6", |
| 1090 | "k7", "f7", |
| 1091 | "k8", "f8", |
| 1092 | "k9", "f9", |
| 1093 | "k0", "f10", |
| 1094 | "kH", "home-down", |
| 1095 | "ka", "clear-tabs", |
| 1096 | "kt", "clear-tab", |
| 1097 | "kT", "set-tab", |
| 1098 | "kC", "clear", |
| 1099 | "kL", "deleteline", |
| 1100 | "kM", "exit-insert", |
| 1101 | "kE", "clear-eol", |
| 1102 | "kS", "clear-eos", |
| 1103 | "kI", "insert", |
| 1104 | "kA", "insertline", |
| 1105 | "kN", "next", |
| 1106 | "kP", "prior", |
| 1107 | "kF", "scroll-forward", |
| 1108 | "kR", "scroll-reverse" |
| 1109 | }; |
| 1110 | int i; |
| 1111 | |
| 1112 | for (i = 0; i < (sizeof (keys)/sizeof (keys[0])); i++) |
| 1113 | { |
| 1114 | char *sequence = tgetstr (keys[i].cap, address); |
| 1115 | if (sequence) |
| 1116 | Fdefine_key (Vfunction_key_map, |
| 1117 | build_string (sequence), |
| 1118 | Fmake_vector (make_number (1), intern (keys[i].name))); |
| 1119 | } |
| 1120 | } |
| 1121 | |
| 1122 | \f |
| 1123 | term_init (terminal_type) |
| 1124 | char *terminal_type; |
| 1125 | { |
| 1126 | char *area; |
| 1127 | char **address = &area; |
| 1128 | char buffer[2044]; |
| 1129 | register char *p; |
| 1130 | int status; |
| 1131 | |
| 1132 | extern char *tgetstr (); |
| 1133 | |
| 1134 | Wcm_clear (); |
| 1135 | dont_calculate_costs = 0; |
| 1136 | |
| 1137 | status = tgetent (buffer, terminal_type); |
| 1138 | if (status < 0) |
| 1139 | fatal ("Cannot open termcap database file.\n"); |
| 1140 | if (status == 0) |
| 1141 | fatal ("Terminal type %s is not defined.\n", terminal_type); |
| 1142 | |
| 1143 | #ifdef TERMINFO |
| 1144 | area = (char *) malloc (2044); |
| 1145 | #else |
| 1146 | area = (char *) malloc (strlen (buffer)); |
| 1147 | #endif /* not TERMINFO */ |
| 1148 | if (area == 0) |
| 1149 | abort (); |
| 1150 | |
| 1151 | TS_ins_line = tgetstr ("al", address); |
| 1152 | TS_ins_multi_lines = tgetstr ("AL", address); |
| 1153 | TS_bell = tgetstr ("bl", address); |
| 1154 | BackTab = tgetstr ("bt", address); |
| 1155 | TS_clr_to_bottom = tgetstr ("cd", address); |
| 1156 | TS_clr_line = tgetstr ("ce", address); |
| 1157 | TS_clr_screen = tgetstr ("cl", address); |
| 1158 | ColPosition = tgetstr ("ch", address); |
| 1159 | AbsPosition = tgetstr ("cm", address); |
| 1160 | CR = tgetstr ("cr", address); |
| 1161 | TS_set_scroll_region = tgetstr ("cs", address); |
| 1162 | TS_set_scroll_region_1 = tgetstr ("cS", address); |
| 1163 | RowPosition = tgetstr ("cv", address); |
| 1164 | TS_del_char = tgetstr ("dc", address); |
| 1165 | TS_del_multi_chars = tgetstr ("DC", address); |
| 1166 | TS_del_line = tgetstr ("dl", address); |
| 1167 | TS_del_multi_lines = tgetstr ("DL", address); |
| 1168 | TS_delete_mode = tgetstr ("dm", address); |
| 1169 | TS_end_delete_mode = tgetstr ("ed", address); |
| 1170 | TS_end_insert_mode = tgetstr ("ei", address); |
| 1171 | Home = tgetstr ("ho", address); |
| 1172 | TS_ins_char = tgetstr ("ic", address); |
| 1173 | TS_ins_multi_chars = tgetstr ("IC", address); |
| 1174 | TS_insert_mode = tgetstr ("im", address); |
| 1175 | TS_pad_inserted_char = tgetstr ("ip", address); |
| 1176 | TS_end_keypad_mode = tgetstr ("ke", address); |
| 1177 | TS_keypad_mode = tgetstr ("ks", address); |
| 1178 | LastLine = tgetstr ("ll", address); |
| 1179 | Right = tgetstr ("nd", address); |
| 1180 | Down = tgetstr ("do", address); |
| 1181 | if (!Down) |
| 1182 | Down = tgetstr ("nl", address); /* Obsolete name for "do" */ |
| 1183 | #ifdef VMS |
| 1184 | /* VMS puts a carriage return before each linefeed, |
| 1185 | so it is not safe to use linefeeds. */ |
| 1186 | if (Down && Down[0] == '\n' && Down[1] == '\0') |
| 1187 | Down = 0; |
| 1188 | #endif /* VMS */ |
| 1189 | if (tgetflag ("bs")) |
| 1190 | Left = "\b"; /* can't possibly be longer! */ |
| 1191 | else /* (Actually, "bs" is obsolete...) */ |
| 1192 | Left = tgetstr ("le", address); |
| 1193 | if (!Left) |
| 1194 | Left = tgetstr ("bc", address); /* Obsolete name for "le" */ |
| 1195 | TS_pad_char = tgetstr ("pc", address); |
| 1196 | TS_repeat = tgetstr ("rp", address); |
| 1197 | TS_end_standout_mode = tgetstr ("se", address); |
| 1198 | TS_fwd_scroll = tgetstr ("sf", address); |
| 1199 | TS_standout_mode = tgetstr ("so", address); |
| 1200 | TS_rev_scroll = tgetstr ("sr", address); |
| 1201 | Wcm.cm_tab = tgetstr ("ta", address); |
| 1202 | TS_end_termcap_modes = tgetstr ("te", address); |
| 1203 | TS_termcap_modes = tgetstr ("ti", address); |
| 1204 | Up = tgetstr ("up", address); |
| 1205 | TS_visible_bell = tgetstr ("vb", address); |
| 1206 | TS_end_visual_mode = tgetstr ("ve", address); |
| 1207 | TS_visual_mode = tgetstr ("vs", address); |
| 1208 | TS_set_window = tgetstr ("wi", address); |
| 1209 | MultiUp = tgetstr ("UP", address); |
| 1210 | MultiDown = tgetstr ("DO", address); |
| 1211 | MultiLeft = tgetstr ("LE", address); |
| 1212 | MultiRight = tgetstr ("RI", address); |
| 1213 | |
| 1214 | AutoWrap = tgetflag ("am"); |
| 1215 | memory_below_screen = tgetflag ("db"); |
| 1216 | TF_hazeltine = tgetflag ("hz"); |
| 1217 | must_write_spaces = tgetflag ("in"); |
| 1218 | meta_key = tgetflag ("km") || tgetflag ("MT"); |
| 1219 | TF_insmode_motion = tgetflag ("mi"); |
| 1220 | TF_standout_motion = tgetflag ("ms"); |
| 1221 | TF_underscore = tgetflag ("ul"); |
| 1222 | MagicWrap = tgetflag ("xn"); |
| 1223 | TF_xs = tgetflag ("xs"); |
| 1224 | TF_teleray = tgetflag ("xt"); |
| 1225 | |
| 1226 | term_get_fkeys (address); |
| 1227 | |
| 1228 | /* Get screen size from system, or else from termcap. */ |
| 1229 | get_screen_size (&SCREEN_WIDTH (selected_screen), |
| 1230 | &SCREEN_HEIGHT (selected_screen)); |
| 1231 | if (SCREEN_WIDTH (selected_screen) <= 0) |
| 1232 | SCREEN_WIDTH (selected_screen) = tgetnum ("co"); |
| 1233 | if (SCREEN_HEIGHT (selected_screen) <= 0) |
| 1234 | SCREEN_HEIGHT (selected_screen) = tgetnum ("li"); |
| 1235 | |
| 1236 | min_padding_speed = tgetnum ("pb"); |
| 1237 | TN_standout_width = tgetnum ("sg"); |
| 1238 | TabWidth = tgetnum ("tw"); |
| 1239 | |
| 1240 | #ifdef VMS |
| 1241 | /* These capabilities commonly use ^J. |
| 1242 | I don't know why, but sending them on VMS does not work; |
| 1243 | it causes following spaces to be lost, sometimes. |
| 1244 | For now, the simplest fix is to avoid using these capabilities ever. */ |
| 1245 | if (Down && Down[0] == '\n') |
| 1246 | Down = 0; |
| 1247 | #endif /* VMS */ |
| 1248 | |
| 1249 | if (!TS_bell) |
| 1250 | TS_bell = "\07"; |
| 1251 | |
| 1252 | if (!TS_fwd_scroll) |
| 1253 | TS_fwd_scroll = Down; |
| 1254 | |
| 1255 | PC = TS_pad_char ? *TS_pad_char : 0; |
| 1256 | |
| 1257 | if (TabWidth < 0) |
| 1258 | TabWidth = 8; |
| 1259 | |
| 1260 | /* Turned off since /etc/termcap seems to have :ta= for most terminals |
| 1261 | and newer termcap doc does not seem to say there is a default. |
| 1262 | if (!Wcm.cm_tab) |
| 1263 | Wcm.cm_tab = "\t"; |
| 1264 | */ |
| 1265 | |
| 1266 | if (TS_standout_mode == 0) |
| 1267 | { |
| 1268 | TN_standout_width = tgetnum ("ug"); |
| 1269 | TS_end_standout_mode = tgetstr ("ue", address); |
| 1270 | TS_standout_mode = tgetstr ("us", address); |
| 1271 | } |
| 1272 | |
| 1273 | if (TF_teleray) |
| 1274 | { |
| 1275 | Wcm.cm_tab = 0; |
| 1276 | /* Teleray: most programs want a space in front of TS_standout_mode, |
| 1277 | but Emacs can do without it (and give one extra column). */ |
| 1278 | TS_standout_mode = "\033RD"; |
| 1279 | TN_standout_width = 1; |
| 1280 | /* But that means we cannot rely on ^M to go to column zero! */ |
| 1281 | CR = 0; |
| 1282 | /* LF can't be trusted either -- can alter hpos */ |
| 1283 | /* if move at column 0 thru a line with TS_standout_mode */ |
| 1284 | Down = 0; |
| 1285 | } |
| 1286 | |
| 1287 | /* Special handling for certain terminal types known to need it */ |
| 1288 | |
| 1289 | if (!strcmp (terminal_type, "supdup")) |
| 1290 | { |
| 1291 | memory_below_screen = 1; |
| 1292 | Wcm.cm_losewrap = 1; |
| 1293 | } |
| 1294 | if (!strncmp (terminal_type, "c10", 3) |
| 1295 | || !strcmp (terminal_type, "perq")) |
| 1296 | { |
| 1297 | /* Supply a makeshift :wi string. |
| 1298 | This string is not valid in general since it works only |
| 1299 | for windows starting at the upper left corner; |
| 1300 | but that is all Emacs uses. |
| 1301 | |
| 1302 | This string works only if the screen is using |
| 1303 | the top of the video memory, because addressing is memory-relative. |
| 1304 | So first check the :ti string to see if that is true. |
| 1305 | |
| 1306 | It would be simpler if the :wi string could go in the termcap |
| 1307 | entry, but it can't because it is not fully valid. |
| 1308 | If it were in the termcap entry, it would confuse other programs. */ |
| 1309 | if (!TS_set_window) |
| 1310 | { |
| 1311 | p = TS_termcap_modes; |
| 1312 | while (*p && strcmp (p, "\033v ")) |
| 1313 | p++; |
| 1314 | if (*p) |
| 1315 | TS_set_window = "\033v%C %C %C %C "; |
| 1316 | } |
| 1317 | /* Termcap entry often fails to have :in: flag */ |
| 1318 | must_write_spaces = 1; |
| 1319 | /* :ti string typically fails to have \E^G! in it */ |
| 1320 | /* This limits scope of insert-char to one line. */ |
| 1321 | strcpy (area, TS_termcap_modes); |
| 1322 | strcat (area, "\033\007!"); |
| 1323 | TS_termcap_modes = area; |
| 1324 | area += strlen (area) + 1; |
| 1325 | p = AbsPosition; |
| 1326 | /* Change all %+ parameters to %C, to handle |
| 1327 | values above 96 correctly for the C100. */ |
| 1328 | while (*p) |
| 1329 | { |
| 1330 | if (p[0] == '%' && p[1] == '+') |
| 1331 | p[1] = 'C'; |
| 1332 | p++; |
| 1333 | } |
| 1334 | } |
| 1335 | |
| 1336 | ScreenRows = SCREEN_HEIGHT (selected_screen); |
| 1337 | ScreenCols = SCREEN_WIDTH (selected_screen); |
| 1338 | specified_window = SCREEN_HEIGHT (selected_screen); |
| 1339 | |
| 1340 | if (Wcm_init () == -1) /* can't do cursor motion */ |
| 1341 | #ifdef VMS |
| 1342 | fatal ("Terminal type \"%s\" is not powerful enough to run Emacs.\n\ |
| 1343 | It lacks the ability to position the cursor.\n\ |
| 1344 | If that is not the actual type of terminal you have, use either the\n\ |
| 1345 | DCL command `SET TERMINAL/DEVICE= ...' for DEC-compatible terminals,\n\ |
| 1346 | or `define EMACS_TERM \"terminal type\"' for non-DEC terminals.\n", |
| 1347 | terminal_type); |
| 1348 | #else |
| 1349 | fatal ("Terminal type \"%s\" is not powerful enough to run Emacs.\n\ |
| 1350 | It lacks the ability to position the cursor.\n\ |
| 1351 | If that is not the actual type of terminal you have,\n\ |
| 1352 | use the C-shell command `setenv TERM ...' to specify the correct type.\n\ |
| 1353 | It may be necessary to do `unsetenv TERMCAP' as well.\n", |
| 1354 | terminal_type); |
| 1355 | #endif |
| 1356 | if (SCREEN_HEIGHT (selected_screen) <= 0 |
| 1357 | || SCREEN_WIDTH (selected_screen) <= 0) |
| 1358 | fatal ("The screen size has not been specified."); |
| 1359 | |
| 1360 | delete_in_insert_mode |
| 1361 | = TS_delete_mode && TS_insert_mode |
| 1362 | && !strcmp (TS_delete_mode, TS_insert_mode); |
| 1363 | |
| 1364 | se_is_so = (TS_standout_mode |
| 1365 | && TS_end_standout_mode |
| 1366 | && !strcmp (TS_standout_mode, TS_end_standout_mode)); |
| 1367 | |
| 1368 | /* Remove width of standout marker from usable width of line */ |
| 1369 | if (TN_standout_width > 0) |
| 1370 | SCREEN_WIDTH (selected_screen) -= TN_standout_width; |
| 1371 | |
| 1372 | UseTabs = tabs_safe_p () && TabWidth == 8; |
| 1373 | |
| 1374 | scroll_region_ok |
| 1375 | = (Wcm.cm_abs |
| 1376 | && (TS_set_window || TS_set_scroll_region || TS_set_scroll_region_1)); |
| 1377 | |
| 1378 | line_ins_del_ok = (((TS_ins_line || TS_ins_multi_lines) |
| 1379 | && (TS_del_line || TS_del_multi_lines)) |
| 1380 | || (scroll_region_ok && TS_fwd_scroll && TS_rev_scroll)); |
| 1381 | |
| 1382 | char_ins_del_ok = ((TS_ins_char || TS_insert_mode |
| 1383 | || TS_pad_inserted_char || TS_ins_multi_chars) |
| 1384 | && (TS_del_char || TS_del_multi_chars)); |
| 1385 | |
| 1386 | fast_clear_end_of_line = TS_clr_line != 0; |
| 1387 | |
| 1388 | init_baud_rate (); |
| 1389 | if (read_socket_hook) /* Baudrate is somewhat */ |
| 1390 | /* meaningless in this case */ |
| 1391 | baud_rate = 9600; |
| 1392 | } |
| 1393 | |
| 1394 | /* VARARGS 1 */ |
| 1395 | fatal (str, arg1, arg2) |
| 1396 | { |
| 1397 | fprintf (stderr, "emacs: "); |
| 1398 | fprintf (stderr, str, arg1, arg2); |
| 1399 | fflush (stderr); |
| 1400 | exit (1); |
| 1401 | } |