| 1 | #include <windows.h> |
| 2 | |
| 3 | #include <stdio.h> |
| 4 | #include <stdlib.h> |
| 5 | |
| 6 | #include "putty.h" |
| 7 | |
| 8 | static unsigned long *text; /* buffer of text on terminal screen */ |
| 9 | static unsigned long *scrtop; /* top of working screen */ |
| 10 | static unsigned long *disptop; /* top of displayed screen */ |
| 11 | static unsigned long *sbtop; /* top of scrollback */ |
| 12 | static unsigned long *cpos; /* cursor position (convenience) */ |
| 13 | static unsigned long *disptext; /* buffer of text on real screen */ |
| 14 | static unsigned long *wanttext; /* buffer of text we want on screen */ |
| 15 | static unsigned long *alttext; /* buffer of text on alt. screen */ |
| 16 | |
| 17 | static unsigned char *selspace; /* buffer for building selections in */ |
| 18 | |
| 19 | #define TSIZE (sizeof(*text)) |
| 20 | #define fix_cpos do { cpos = scrtop + curs_y * (cols+1) + curs_x; } while(0) |
| 21 | |
| 22 | static unsigned long curr_attr, save_attr; |
| 23 | |
| 24 | static int curs_x, curs_y; /* cursor */ |
| 25 | static int save_x, save_y; /* saved cursor position */ |
| 26 | static int marg_t, marg_b; /* scroll margins */ |
| 27 | static int dec_om; /* DEC origin mode flag */ |
| 28 | static int wrap, wrapnext; /* wrap flags */ |
| 29 | static int insert; /* insert-mode flag */ |
| 30 | static int cset; /* 0 or 1: which char set */ |
| 31 | static int save_cset, save_csattr; /* saved with cursor position */ |
| 32 | static int rvideo; /* global reverse video flag */ |
| 33 | |
| 34 | static unsigned long cset_attr[2]; |
| 35 | |
| 36 | /* |
| 37 | * Saved settings on the alternate screen. |
| 38 | */ |
| 39 | static int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins, alt_cset; |
| 40 | static int alt_t, alt_b; |
| 41 | static int alt_which; |
| 42 | |
| 43 | #define ARGS_MAX 32 /* max # of esc sequence arguments */ |
| 44 | #define ARG_DEFAULT -1 /* if an arg isn't specified */ |
| 45 | #define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) ) |
| 46 | static int esc_args[ARGS_MAX]; |
| 47 | static int esc_nargs; |
| 48 | static int esc_query; |
| 49 | |
| 50 | #define OSC_STR_MAX 2048 |
| 51 | static int osc_strlen; |
| 52 | static char osc_string[OSC_STR_MAX+1]; |
| 53 | static int osc_w; |
| 54 | |
| 55 | static unsigned char *tabs; |
| 56 | |
| 57 | #define MAXNL 5 |
| 58 | static int nl_count; |
| 59 | |
| 60 | static int scroll_heuristic; |
| 61 | |
| 62 | static enum { |
| 63 | TOPLEVEL, IGNORE_NEXT, |
| 64 | SEEN_ESC, SEEN_CSI, SET_GL, SET_GR, |
| 65 | SEEN_OSC, SEEN_OSC_P, SEEN_OSC_W, OSC_STRING, OSC_MAYBE_ST, |
| 66 | SEEN_ESCHASH |
| 67 | } termstate; |
| 68 | |
| 69 | static enum { |
| 70 | NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED |
| 71 | } selstate; |
| 72 | static enum { |
| 73 | SM_CHAR, SM_WORD, SM_LINE |
| 74 | } selmode; |
| 75 | static unsigned long *selstart, *selend, *selanchor; |
| 76 | |
| 77 | static short wordness[256] = { |
| 78 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 01 */ |
| 79 | 0,1,2,1,1,1,1,1,1,1,1,1,1,2,2,2, 2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1, /* 23 */ |
| 80 | 1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,2, /* 45 */ |
| 81 | 1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1, /* 67 */ |
| 82 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 89 */ |
| 83 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* AB */ |
| 84 | 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2, /* CD */ |
| 85 | 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2, /* EF */ |
| 86 | }; |
| 87 | |
| 88 | static unsigned char sel_nl[] = SEL_NL; |
| 89 | |
| 90 | /* |
| 91 | * Internal prototypes. |
| 92 | */ |
| 93 | static void do_paint (Context, int); |
| 94 | static void erase_lots (int, int, int); |
| 95 | static void swap_screen (int); |
| 96 | static void update_sbar (void); |
| 97 | static void deselect (void); |
| 98 | |
| 99 | /* |
| 100 | * Set up power-on settings for the terminal. |
| 101 | */ |
| 102 | static void power_on(void) { |
| 103 | curs_x = curs_y = alt_x = alt_y = save_x = save_y = 0; |
| 104 | alt_t = marg_t = 0; |
| 105 | if (rows != -1) |
| 106 | alt_b = marg_b = rows - 1; |
| 107 | else |
| 108 | alt_b = marg_b = 0; |
| 109 | if (cols != -1) { |
| 110 | int i; |
| 111 | for (i = 0; i < cols; i++) |
| 112 | tabs[i] = (i % 8 == 0 ? TRUE : FALSE); |
| 113 | } |
| 114 | alt_om = dec_om = cfg.dec_om; |
| 115 | alt_wnext = wrapnext = alt_ins = insert = FALSE; |
| 116 | alt_wrap = wrap = cfg.wrap_mode; |
| 117 | alt_cset = cset = 0; |
| 118 | cset_attr[0] = cset_attr[1] = ATTR_ASCII; |
| 119 | rvideo = 0; |
| 120 | save_attr = curr_attr = ATTR_DEFAULT; |
| 121 | app_cursor_keys = cfg.app_cursor; |
| 122 | app_keypad_keys = cfg.app_keypad; |
| 123 | alt_which = 0; |
| 124 | { |
| 125 | int i; |
| 126 | for (i = 0; i < 256; i++) |
| 127 | wordness[i] = cfg.wordness[i]; |
| 128 | } |
| 129 | if (text) { |
| 130 | swap_screen (1); |
| 131 | erase_lots (FALSE, TRUE, TRUE); |
| 132 | swap_screen (0); |
| 133 | erase_lots (FALSE, TRUE, TRUE); |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | /* |
| 138 | * Force a screen update. |
| 139 | */ |
| 140 | void term_update(void) { |
| 141 | Context ctx; |
| 142 | ctx = get_ctx(); |
| 143 | if (ctx) { |
| 144 | do_paint (ctx, TRUE); |
| 145 | free_ctx (ctx); |
| 146 | nl_count = 0; |
| 147 | scroll_heuristic = 0; |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | /* |
| 152 | * Same as power_on(), but an external function. |
| 153 | */ |
| 154 | void term_pwron(void) { |
| 155 | power_on(); |
| 156 | fix_cpos; |
| 157 | disptop = scrtop; |
| 158 | deselect(); |
| 159 | term_update(); |
| 160 | } |
| 161 | |
| 162 | /* |
| 163 | * Clear the scrollback. |
| 164 | */ |
| 165 | void term_clrsb(void) { |
| 166 | disptop = sbtop = scrtop; |
| 167 | update_sbar(); |
| 168 | } |
| 169 | |
| 170 | /* |
| 171 | * Initialise the terminal. |
| 172 | */ |
| 173 | void term_init(void) { |
| 174 | text = sbtop = scrtop = disptop = cpos = NULL; |
| 175 | disptext = wanttext = NULL; |
| 176 | tabs = NULL; |
| 177 | selspace = NULL; |
| 178 | deselect(); |
| 179 | rows = cols = -1; |
| 180 | nl_count = 0; |
| 181 | power_on(); |
| 182 | } |
| 183 | |
| 184 | /* |
| 185 | * Set up the terminal for a given size. |
| 186 | */ |
| 187 | void term_size(int newrows, int newcols, int newsavelines) { |
| 188 | unsigned long *newtext, *newdisp, *newwant, *newalt; |
| 189 | int i, j, crows, ccols; |
| 190 | |
| 191 | if (newrows == rows && newcols == cols && newsavelines == savelines) |
| 192 | return; /* nothing to do */ |
| 193 | |
| 194 | alt_t = marg_t = 0; |
| 195 | alt_b = marg_b = newrows - 1; |
| 196 | |
| 197 | newtext = smalloc ((newrows+newsavelines)*(newcols+1)*TSIZE); |
| 198 | disptop = newtext + newsavelines*(newcols+1); |
| 199 | for (i=0; i<(newrows+newsavelines)*(newcols+1); i++) |
| 200 | newtext[i] = ERASE_CHAR; |
| 201 | if (rows != -1) { |
| 202 | crows = rows + (scrtop - sbtop) / (cols+1); |
| 203 | if (crows > newrows+newsavelines) |
| 204 | crows = newrows+newsavelines; |
| 205 | ccols = (cols < newcols ? cols : newcols); |
| 206 | for (i=0; i<crows; i++) { |
| 207 | int oldidx = (rows + savelines - crows + i) * (cols+1); |
| 208 | int newidx = (newrows + newsavelines - crows + i) * (newcols+1); |
| 209 | for (j=0; j<ccols; j++) |
| 210 | newtext[newidx+j] = text[oldidx+j]; |
| 211 | newtext[newidx+newcols] = |
| 212 | (cols == newcols ? text[oldidx+cols] : 0); |
| 213 | } |
| 214 | sbtop = disptop - (crows - newrows) * (newcols+1); |
| 215 | if (sbtop > disptop) |
| 216 | sbtop = disptop; |
| 217 | } else |
| 218 | sbtop = disptop; |
| 219 | scrtop = disptop; |
| 220 | sfree (text); |
| 221 | text = newtext; |
| 222 | |
| 223 | newdisp = smalloc (newrows*(newcols+1)*TSIZE); |
| 224 | for (i=0; i<newrows*(newcols+1); i++) |
| 225 | newdisp[i] = ATTR_INVALID; |
| 226 | sfree (disptext); |
| 227 | disptext = newdisp; |
| 228 | |
| 229 | newwant = smalloc (newrows*(newcols+1)*TSIZE); |
| 230 | for (i=0; i<newrows*(newcols+1); i++) |
| 231 | newwant[i] = ATTR_INVALID; |
| 232 | sfree (wanttext); |
| 233 | wanttext = newwant; |
| 234 | |
| 235 | newalt = smalloc (newrows*(newcols+1)*TSIZE); |
| 236 | for (i=0; i<newrows*(newcols+1); i++) |
| 237 | newalt[i] = ERASE_CHAR; |
| 238 | sfree (alttext); |
| 239 | alttext = newalt; |
| 240 | |
| 241 | sfree (selspace); |
| 242 | selspace = smalloc ( (newrows+newsavelines) * (newcols+sizeof(sel_nl)) ); |
| 243 | |
| 244 | tabs = srealloc (tabs, newcols*sizeof(*tabs)); |
| 245 | { |
| 246 | int i; |
| 247 | for (i = (cols > 0 ? cols : 0); i < newcols; i++) |
| 248 | tabs[i] = (i % 8 == 0 ? TRUE : FALSE); |
| 249 | } |
| 250 | |
| 251 | if (rows > 0) |
| 252 | curs_y += newrows - rows; |
| 253 | if (curs_y < 0) |
| 254 | curs_y = 0; |
| 255 | if (curs_y >= newrows) |
| 256 | curs_y = newrows-1; |
| 257 | if (curs_x >= newcols) |
| 258 | curs_x = newcols-1; |
| 259 | alt_x = alt_y = 0; |
| 260 | wrapnext = alt_wnext = FALSE; |
| 261 | |
| 262 | rows = newrows; |
| 263 | cols = newcols; |
| 264 | savelines = newsavelines; |
| 265 | fix_cpos; |
| 266 | |
| 267 | deselect(); |
| 268 | update_sbar(); |
| 269 | term_update(); |
| 270 | } |
| 271 | |
| 272 | /* |
| 273 | * Swap screens. |
| 274 | */ |
| 275 | static void swap_screen (int which) { |
| 276 | int t; |
| 277 | unsigned long tt; |
| 278 | |
| 279 | if (which == alt_which) |
| 280 | return; |
| 281 | |
| 282 | alt_which = which; |
| 283 | |
| 284 | for (t=0; t<rows*(cols+1); t++) { |
| 285 | tt = scrtop[t]; scrtop[t] = alttext[t]; alttext[t] = tt; |
| 286 | } |
| 287 | |
| 288 | t = curs_x; curs_x = alt_x; alt_x = t; |
| 289 | t = curs_y; curs_y = alt_y; alt_y = t; |
| 290 | t = marg_t; marg_t = alt_t; alt_t = t; |
| 291 | t = marg_b; marg_b = alt_b; alt_b = t; |
| 292 | t = dec_om; dec_om = alt_om; alt_om = t; |
| 293 | t = wrap; wrap = alt_wrap; alt_wrap = t; |
| 294 | t = wrapnext; wrapnext = alt_wnext; alt_wnext = t; |
| 295 | t = insert; insert = alt_ins; alt_ins = t; |
| 296 | t = cset; cset = alt_cset; alt_cset = t; |
| 297 | |
| 298 | fix_cpos; |
| 299 | } |
| 300 | |
| 301 | /* |
| 302 | * Retrieve a character from `inbuf'. |
| 303 | */ |
| 304 | static int inbuf_getc(void) { |
| 305 | if (inbuf_head == inbuf_reap) |
| 306 | return -1; /* EOF */ |
| 307 | else { |
| 308 | int n = inbuf_reap; |
| 309 | inbuf_reap = (inbuf_reap+1) & INBUF_MASK; |
| 310 | return inbuf[n]; |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | /* |
| 315 | * Update the scroll bar. |
| 316 | */ |
| 317 | static void update_sbar(void) { |
| 318 | int min; |
| 319 | |
| 320 | min = (sbtop - text) / (cols+1); |
| 321 | set_sbar ((scrtop - text) / (cols+1) + rows - min, |
| 322 | (disptop - text) / (cols+1) - min, |
| 323 | rows); |
| 324 | } |
| 325 | |
| 326 | /* |
| 327 | * Check whether the region bounded by the two pointers intersects |
| 328 | * the scroll region, and de-select the on-screen selection if so. |
| 329 | */ |
| 330 | static void check_selection (unsigned long *from, unsigned long *to) { |
| 331 | if (from < selend && selstart < to) |
| 332 | deselect(); |
| 333 | } |
| 334 | |
| 335 | /* |
| 336 | * Scroll the screen. (`lines' is +ve for scrolling forward, -ve |
| 337 | * for backward.) `sb' is TRUE if the scrolling is permitted to |
| 338 | * affect the scrollback buffer. |
| 339 | */ |
| 340 | static void scroll (int topline, int botline, int lines, int sb) { |
| 341 | unsigned long *scroll_top; |
| 342 | int scroll_size, size, i; |
| 343 | |
| 344 | scroll_top = scrtop + topline*(cols+1); |
| 345 | size = (lines < 0 ? -lines : lines) * (cols+1); |
| 346 | scroll_size = (botline - topline + 1) * (cols+1) - size; |
| 347 | |
| 348 | if (lines > 0 && topline == 0 && botline == (rows-1) && sb) { |
| 349 | /* |
| 350 | * Since we're going to scroll the whole screen upwards, |
| 351 | * let's also affect the scrollback buffer. |
| 352 | */ |
| 353 | sbtop -= lines * (cols+1); |
| 354 | if (sbtop < text) |
| 355 | sbtop = text; |
| 356 | scroll_size += scroll_top - sbtop; |
| 357 | scroll_top = sbtop; |
| 358 | update_sbar(); |
| 359 | } |
| 360 | |
| 361 | if (scroll_size < 0) { |
| 362 | size += scroll_size; |
| 363 | scroll_size = 0; |
| 364 | } |
| 365 | |
| 366 | if (lines > 0) { |
| 367 | if (scroll_size) |
| 368 | memmove (scroll_top, scroll_top + size, scroll_size*TSIZE); |
| 369 | for (i = 0; i < size; i++) |
| 370 | scroll_top[i+scroll_size] = ERASE_CHAR; |
| 371 | if (selstart > scroll_top && |
| 372 | selstart < scroll_top + size + scroll_size) { |
| 373 | selstart -= size; |
| 374 | if (selstart < scroll_top) |
| 375 | selstart = scroll_top; |
| 376 | } |
| 377 | if (selend > scroll_top && |
| 378 | selend < scroll_top + size + scroll_size) { |
| 379 | selend -= size; |
| 380 | if (selend < scroll_top) |
| 381 | selend = scroll_top; |
| 382 | } |
| 383 | } else { |
| 384 | if (scroll_size) |
| 385 | memmove (scroll_top + size, scroll_top, scroll_size*TSIZE); |
| 386 | for (i = 0; i < size; i++) |
| 387 | scroll_top[i] = ERASE_CHAR; |
| 388 | if (selstart > scroll_top && |
| 389 | selstart < scroll_top + size + scroll_size) { |
| 390 | selstart += size; |
| 391 | if (selstart > scroll_top + size + scroll_size) |
| 392 | selstart = scroll_top + size + scroll_size; |
| 393 | } |
| 394 | if (selend > scroll_top && |
| 395 | selend < scroll_top + size + scroll_size) { |
| 396 | selend += size; |
| 397 | if (selend > scroll_top + size + scroll_size) |
| 398 | selend = scroll_top + size + scroll_size; |
| 399 | } |
| 400 | } |
| 401 | |
| 402 | scroll_heuristic += lines; |
| 403 | } |
| 404 | |
| 405 | /* |
| 406 | * Move the cursor to a given position, clipping at boundaries. We |
| 407 | * may or may not want to clip at the scroll margin: marg_clip is 0 |
| 408 | * not to, 1 to disallow _passing_ the margins, and 2 to disallow |
| 409 | * even _being_ outside the margins. |
| 410 | */ |
| 411 | static void move (int x, int y, int marg_clip) { |
| 412 | if (x < 0) |
| 413 | x = 0; |
| 414 | if (x >= cols) |
| 415 | x = cols-1; |
| 416 | if (marg_clip) { |
| 417 | if ((curs_y >= marg_t || marg_clip == 2) && y < marg_t) |
| 418 | y = marg_t; |
| 419 | if ((curs_y <= marg_b || marg_clip == 2) && y > marg_b) |
| 420 | y = marg_b; |
| 421 | } |
| 422 | if (y < 0) |
| 423 | y = 0; |
| 424 | if (y >= rows) |
| 425 | y = rows-1; |
| 426 | curs_x = x; |
| 427 | curs_y = y; |
| 428 | fix_cpos; |
| 429 | wrapnext = FALSE; |
| 430 | } |
| 431 | |
| 432 | /* |
| 433 | * Save or restore the cursor and SGR mode. |
| 434 | */ |
| 435 | static void save_cursor(int save) { |
| 436 | if (save) { |
| 437 | save_x = curs_x; |
| 438 | save_y = curs_y; |
| 439 | save_attr = curr_attr; |
| 440 | save_cset = cset; |
| 441 | save_csattr = cset_attr[cset]; |
| 442 | } else { |
| 443 | curs_x = save_x; |
| 444 | curs_y = save_y; |
| 445 | curr_attr = save_attr; |
| 446 | cset = save_cset; |
| 447 | cset_attr[cset] = save_csattr; |
| 448 | fix_cpos; |
| 449 | } |
| 450 | } |
| 451 | |
| 452 | /* |
| 453 | * Erase a large portion of the screen: the whole screen, or the |
| 454 | * whole line, or parts thereof. |
| 455 | */ |
| 456 | static void erase_lots (int line_only, int from_begin, int to_end) { |
| 457 | unsigned long *startpos, *endpos; |
| 458 | |
| 459 | if (line_only) { |
| 460 | startpos = cpos - curs_x; |
| 461 | endpos = startpos + cols+1; |
| 462 | } else { |
| 463 | startpos = scrtop; |
| 464 | endpos = startpos + rows * (cols+1); |
| 465 | } |
| 466 | if (!from_begin) |
| 467 | startpos = cpos; |
| 468 | if (!to_end) |
| 469 | endpos = cpos; |
| 470 | check_selection (startpos, endpos); |
| 471 | while (startpos < endpos) |
| 472 | *startpos++ = ERASE_CHAR; |
| 473 | } |
| 474 | |
| 475 | /* |
| 476 | * Insert or delete characters within the current line. n is +ve if |
| 477 | * insertion is desired, and -ve for deletion. |
| 478 | */ |
| 479 | static void insch (int n) { |
| 480 | int dir = (n < 0 ? -1 : +1); |
| 481 | int m; |
| 482 | |
| 483 | n = (n < 0 ? -n : n); |
| 484 | if (n > cols - curs_x) |
| 485 | n = cols - curs_x; |
| 486 | m = cols - curs_x - n; |
| 487 | check_selection (cpos, cpos+n); |
| 488 | if (dir < 0) { |
| 489 | memmove (cpos, cpos+n, m*TSIZE); |
| 490 | while (n--) |
| 491 | cpos[m++] = ERASE_CHAR; |
| 492 | } else { |
| 493 | memmove (cpos+n, cpos, m*TSIZE); |
| 494 | while (n--) |
| 495 | cpos[n] = ERASE_CHAR; |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | /* |
| 500 | * Toggle terminal mode `mode' to state `state'. (`query' indicates |
| 501 | * whether the mode is a DEC private one or a normal one.) |
| 502 | */ |
| 503 | static void toggle_mode (int mode, int query, int state) { |
| 504 | if (query) switch (mode) { |
| 505 | case 1: /* application cursor keys */ |
| 506 | app_cursor_keys = state; |
| 507 | break; |
| 508 | case 3: /* 80/132 columns */ |
| 509 | deselect(); |
| 510 | request_resize (state ? 132 : 80, rows); |
| 511 | break; |
| 512 | case 5: /* reverse video */ |
| 513 | rvideo = state; |
| 514 | disptop = scrtop; |
| 515 | break; |
| 516 | case 6: /* DEC origin mode */ |
| 517 | dec_om = state; |
| 518 | break; |
| 519 | case 7: /* auto wrap */ |
| 520 | wrap = state; |
| 521 | break; |
| 522 | case 47: /* alternate screen */ |
| 523 | deselect(); |
| 524 | swap_screen (state); |
| 525 | disptop = scrtop; |
| 526 | break; |
| 527 | } else switch (mode) { |
| 528 | case 4: /* set insert mode */ |
| 529 | insert = state; |
| 530 | break; |
| 531 | } |
| 532 | } |
| 533 | |
| 534 | /* |
| 535 | * Process an OSC sequence: set window title or icon name. |
| 536 | */ |
| 537 | static void do_osc(void) { |
| 538 | if (osc_w) { |
| 539 | while (osc_strlen--) |
| 540 | wordness[(unsigned char)osc_string[osc_strlen]] = esc_args[0]; |
| 541 | } else { |
| 542 | osc_string[osc_strlen] = '\0'; |
| 543 | switch (esc_args[0]) { |
| 544 | case 0: |
| 545 | case 1: |
| 546 | set_icon (osc_string); |
| 547 | if (esc_args[0] == 1) |
| 548 | break; |
| 549 | /* fall through: parameter 0 means set both */ |
| 550 | case 2: |
| 551 | case 21: |
| 552 | set_title (osc_string); |
| 553 | break; |
| 554 | } |
| 555 | } |
| 556 | } |
| 557 | |
| 558 | /* |
| 559 | * Remove everything currently in `inbuf' and stick it up on the |
| 560 | * in-memory display. There's a big state machine in here to |
| 561 | * process escape sequences... |
| 562 | */ |
| 563 | void term_out(void) { |
| 564 | int c; |
| 565 | int must_update = FALSE; |
| 566 | |
| 567 | while ( (c = inbuf_getc()) != -1) { |
| 568 | #ifdef LOG |
| 569 | { |
| 570 | static FILE *fp = NULL; |
| 571 | if (!fp) fp = fopen("putty.log", "wb"); |
| 572 | if (fp) fputc (c, fp); |
| 573 | } |
| 574 | #endif |
| 575 | switch (termstate) { |
| 576 | case TOPLEVEL: |
| 577 | do_toplevel: |
| 578 | switch (c) { |
| 579 | case '\005': /* terminal type query */ |
| 580 | back->send ("\033[?1;2c", 7); |
| 581 | break; |
| 582 | case '\007': |
| 583 | beep(); |
| 584 | disptop = scrtop; |
| 585 | must_update = TRUE; |
| 586 | break; |
| 587 | case '\b': |
| 588 | if (curs_x == 0 && curs_y > 0) |
| 589 | curs_x = cols-1, curs_y--; |
| 590 | else if (wrapnext) |
| 591 | wrapnext = FALSE; |
| 592 | else |
| 593 | curs_x--; |
| 594 | fix_cpos; |
| 595 | disptop = scrtop; |
| 596 | must_update = TRUE; |
| 597 | break; |
| 598 | case '\016': |
| 599 | cset = 1; |
| 600 | break; |
| 601 | case '\017': |
| 602 | cset = 0; |
| 603 | break; |
| 604 | case '\033': |
| 605 | termstate = SEEN_ESC; |
| 606 | break; |
| 607 | case 0233: |
| 608 | termstate = SEEN_CSI; |
| 609 | esc_nargs = 1; |
| 610 | esc_args[0] = ARG_DEFAULT; |
| 611 | esc_query = FALSE; |
| 612 | break; |
| 613 | case 0235: |
| 614 | termstate = SEEN_OSC; |
| 615 | esc_args[0] = 0; |
| 616 | break; |
| 617 | case '\r': |
| 618 | curs_x = 0; |
| 619 | wrapnext = FALSE; |
| 620 | fix_cpos; |
| 621 | disptop = scrtop; |
| 622 | must_update = TRUE; |
| 623 | break; |
| 624 | case '\013': |
| 625 | case '\014': |
| 626 | case '\n': |
| 627 | if (curs_y == marg_b) |
| 628 | scroll (marg_t, marg_b, 1, TRUE); |
| 629 | else if (curs_y < rows-1) |
| 630 | curs_y++; |
| 631 | fix_cpos; |
| 632 | wrapnext = FALSE; |
| 633 | disptop = scrtop; |
| 634 | nl_count++; |
| 635 | break; |
| 636 | case '\t': |
| 637 | do { |
| 638 | curs_x++; |
| 639 | } while (curs_x < cols-1 && !tabs[curs_x]); |
| 640 | if (curs_x >= cols) |
| 641 | curs_x = cols-1; |
| 642 | { |
| 643 | unsigned long *old_cpos = cpos; |
| 644 | fix_cpos; |
| 645 | check_selection (old_cpos, cpos); |
| 646 | } |
| 647 | disptop = scrtop; |
| 648 | must_update = TRUE; |
| 649 | break; |
| 650 | default: |
| 651 | if (c >= ' ' && c != 0234) { |
| 652 | if (wrapnext) { |
| 653 | cpos[1] = ATTR_WRAPPED; |
| 654 | if (curs_y == marg_b) |
| 655 | scroll (marg_t, marg_b, 1, TRUE); |
| 656 | else if (curs_y < rows-1) |
| 657 | curs_y++; |
| 658 | curs_x = 0; |
| 659 | fix_cpos; |
| 660 | wrapnext = FALSE; |
| 661 | nl_count++; |
| 662 | } |
| 663 | if (insert) |
| 664 | insch (1); |
| 665 | check_selection (cpos, cpos+1); |
| 666 | *cpos++ = c | curr_attr | |
| 667 | (c <= 0x7F ? cset_attr[cset] : ATTR_ASCII); |
| 668 | curs_x++; |
| 669 | if (curs_x == cols) { |
| 670 | cpos--; |
| 671 | curs_x--; |
| 672 | wrapnext = wrap; |
| 673 | } |
| 674 | disptop = scrtop; |
| 675 | } |
| 676 | } |
| 677 | break; |
| 678 | case IGNORE_NEXT: |
| 679 | termstate = TOPLEVEL; |
| 680 | break; |
| 681 | case OSC_MAYBE_ST: |
| 682 | /* |
| 683 | * This state is virtually identical to SEEN_ESC, with the |
| 684 | * exception that we have an OSC sequence in the pipeline, |
| 685 | * and _if_ we see a backslash, we process it. |
| 686 | */ |
| 687 | if (c == '\\') { |
| 688 | do_osc(); |
| 689 | termstate = TOPLEVEL; |
| 690 | break; |
| 691 | } |
| 692 | /* else fall through */ |
| 693 | case SEEN_ESC: |
| 694 | termstate = TOPLEVEL; |
| 695 | switch (c) { |
| 696 | case '\005': case '\007': case '\b': case '\016': case '\017': |
| 697 | case '\033': case 0233: case 0234: case 0235: case '\r': |
| 698 | case '\013': case '\014': case '\n': case '\t': |
| 699 | termstate = TOPLEVEL; |
| 700 | goto do_toplevel; /* hack... */ |
| 701 | case ' ': /* some weird sequence? */ |
| 702 | termstate = IGNORE_NEXT; |
| 703 | break; |
| 704 | case '[': /* enter CSI mode */ |
| 705 | termstate = SEEN_CSI; |
| 706 | esc_nargs = 1; |
| 707 | esc_args[0] = ARG_DEFAULT; |
| 708 | esc_query = FALSE; |
| 709 | break; |
| 710 | case ']': /* xterm escape sequences */ |
| 711 | termstate = SEEN_OSC; |
| 712 | esc_args[0] = 0; |
| 713 | break; |
| 714 | case '(': /* should set GL */ |
| 715 | termstate = SET_GL; |
| 716 | break; |
| 717 | case ')': /* should set GR */ |
| 718 | termstate = SET_GR; |
| 719 | break; |
| 720 | case '7': /* save cursor */ |
| 721 | save_cursor (TRUE); |
| 722 | break; |
| 723 | case '8': /* restore cursor */ |
| 724 | save_cursor (FALSE); |
| 725 | disptop = scrtop; |
| 726 | must_update = TRUE; |
| 727 | break; |
| 728 | case '=': |
| 729 | app_keypad_keys = TRUE; |
| 730 | break; |
| 731 | case '>': |
| 732 | app_keypad_keys = FALSE; |
| 733 | break; |
| 734 | case 'D': /* exactly equivalent to LF */ |
| 735 | if (curs_y == marg_b) |
| 736 | scroll (marg_t, marg_b, 1, TRUE); |
| 737 | else if (curs_y < rows-1) |
| 738 | curs_y++; |
| 739 | fix_cpos; |
| 740 | wrapnext = FALSE; |
| 741 | disptop = scrtop; |
| 742 | nl_count++; |
| 743 | break; |
| 744 | case 'E': /* exactly equivalent to CR-LF */ |
| 745 | curs_x = 0; |
| 746 | wrapnext = FALSE; |
| 747 | if (curs_y == marg_b) |
| 748 | scroll (marg_t, marg_b, 1, TRUE); |
| 749 | else if (curs_y < rows-1) |
| 750 | curs_y++; |
| 751 | fix_cpos; |
| 752 | wrapnext = FALSE; |
| 753 | nl_count++; |
| 754 | disptop = scrtop; |
| 755 | break; |
| 756 | case 'M': /* reverse index - backwards LF */ |
| 757 | if (curs_y == marg_t) |
| 758 | scroll (marg_t, marg_b, -1, TRUE); |
| 759 | else if (curs_y > 0) |
| 760 | curs_y--; |
| 761 | fix_cpos; |
| 762 | wrapnext = FALSE; |
| 763 | disptop = scrtop; |
| 764 | must_update = TRUE; |
| 765 | break; |
| 766 | case 'Z': /* terminal type query */ |
| 767 | back->send ("\033[?6c", 5); |
| 768 | break; |
| 769 | case 'c': /* restore power-on settings */ |
| 770 | power_on(); |
| 771 | fix_cpos; |
| 772 | disptop = scrtop; |
| 773 | must_update = TRUE; |
| 774 | break; |
| 775 | case '#': /* ESC # 8 fills screen with Es :-) */ |
| 776 | termstate = SEEN_ESCHASH; |
| 777 | break; |
| 778 | case 'H': /* set a tab */ |
| 779 | tabs[curs_x] = TRUE; |
| 780 | break; |
| 781 | } |
| 782 | break; |
| 783 | case SEEN_CSI: |
| 784 | termstate = TOPLEVEL; /* default */ |
| 785 | switch (c) { |
| 786 | case '\005': case '\007': case '\b': case '\016': case '\017': |
| 787 | case '\033': case 0233: case 0234: case 0235: case '\r': |
| 788 | case '\013': case '\014': case '\n': case '\t': |
| 789 | termstate = TOPLEVEL; |
| 790 | goto do_toplevel; /* hack... */ |
| 791 | case '0': case '1': case '2': case '3': case '4': |
| 792 | case '5': case '6': case '7': case '8': case '9': |
| 793 | if (esc_nargs <= ARGS_MAX) { |
| 794 | if (esc_args[esc_nargs-1] == ARG_DEFAULT) |
| 795 | esc_args[esc_nargs-1] = 0; |
| 796 | esc_args[esc_nargs-1] = |
| 797 | 10 * esc_args[esc_nargs-1] + c - '0'; |
| 798 | } |
| 799 | termstate = SEEN_CSI; |
| 800 | break; |
| 801 | case ';': |
| 802 | if (++esc_nargs <= ARGS_MAX) |
| 803 | esc_args[esc_nargs-1] = ARG_DEFAULT; |
| 804 | termstate = SEEN_CSI; |
| 805 | break; |
| 806 | case '?': |
| 807 | esc_query = TRUE; |
| 808 | termstate = SEEN_CSI; |
| 809 | break; |
| 810 | case 'A': /* move up N lines */ |
| 811 | move (curs_x, curs_y - def(esc_args[0], 1), 1); |
| 812 | disptop = scrtop; |
| 813 | must_update = TRUE; |
| 814 | break; |
| 815 | case 'B': case 'e': /* move down N lines */ |
| 816 | move (curs_x, curs_y + def(esc_args[0], 1), 1); |
| 817 | disptop = scrtop; |
| 818 | must_update = TRUE; |
| 819 | break; |
| 820 | case 'C': case 'a': /* move right N cols */ |
| 821 | move (curs_x + def(esc_args[0], 1), curs_y, 1); |
| 822 | disptop = scrtop; |
| 823 | must_update = TRUE; |
| 824 | break; |
| 825 | case 'D': /* move left N cols */ |
| 826 | move (curs_x - def(esc_args[0], 1), curs_y, 1); |
| 827 | disptop = scrtop; |
| 828 | must_update = TRUE; |
| 829 | break; |
| 830 | case 'E': /* move down N lines and CR */ |
| 831 | move (0, curs_y + def(esc_args[0], 1), 1); |
| 832 | disptop = scrtop; |
| 833 | must_update = TRUE; |
| 834 | break; |
| 835 | case 'F': /* move up N lines and CR */ |
| 836 | move (0, curs_y - def(esc_args[0], 1), 1); |
| 837 | disptop = scrtop; |
| 838 | must_update = TRUE; |
| 839 | break; |
| 840 | case 'G': case '`': /* set horizontal posn */ |
| 841 | move (def(esc_args[0], 1) - 1, curs_y, 0); |
| 842 | disptop = scrtop; |
| 843 | must_update = TRUE; |
| 844 | break; |
| 845 | case 'd': /* set vertical posn */ |
| 846 | move (curs_x, (dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1, |
| 847 | (dec_om ? 2 : 0)); |
| 848 | disptop = scrtop; |
| 849 | must_update = TRUE; |
| 850 | break; |
| 851 | case 'H': case 'f': /* set horz and vert posns at once */ |
| 852 | if (esc_nargs < 2) |
| 853 | esc_args[1] = ARG_DEFAULT; |
| 854 | move (def(esc_args[1], 1) - 1, |
| 855 | (dec_om ? marg_t : 0) + def(esc_args[0], 1) - 1, |
| 856 | (dec_om ? 2 : 0)); |
| 857 | disptop = scrtop; |
| 858 | must_update = TRUE; |
| 859 | break; |
| 860 | case 'J': /* erase screen or parts of it */ |
| 861 | { |
| 862 | unsigned int i = def(esc_args[0], 0) + 1; |
| 863 | if (i > 3) |
| 864 | i = 0; |
| 865 | erase_lots(FALSE, !!(i & 2), !!(i & 1)); |
| 866 | } |
| 867 | disptop = scrtop; |
| 868 | must_update = TRUE; |
| 869 | break; |
| 870 | case 'K': /* erase line or parts of it */ |
| 871 | { |
| 872 | unsigned int i = def(esc_args[0], 0) + 1; |
| 873 | if (i > 3) |
| 874 | i = 0; |
| 875 | erase_lots(TRUE, !!(i & 2), !!(i & 1)); |
| 876 | } |
| 877 | disptop = scrtop; |
| 878 | must_update = TRUE; |
| 879 | break; |
| 880 | case 'L': /* insert lines */ |
| 881 | if (curs_y <= marg_b) |
| 882 | scroll (curs_y, marg_b, -def(esc_args[0], 1), FALSE); |
| 883 | disptop = scrtop; |
| 884 | must_update = TRUE; |
| 885 | break; |
| 886 | case 'M': /* delete lines */ |
| 887 | if (curs_y <= marg_b) |
| 888 | scroll (curs_y, marg_b, def(esc_args[0], 1), FALSE); |
| 889 | disptop = scrtop; |
| 890 | must_update = TRUE; |
| 891 | break; |
| 892 | case '@': /* insert chars */ |
| 893 | insch (def(esc_args[0], 1)); |
| 894 | disptop = scrtop; |
| 895 | must_update = TRUE; |
| 896 | break; |
| 897 | case 'P': /* delete chars */ |
| 898 | insch (-def(esc_args[0], 1)); |
| 899 | disptop = scrtop; |
| 900 | must_update = TRUE; |
| 901 | break; |
| 902 | case 'c': /* terminal type query */ |
| 903 | back->send ("\033[?6c", 5); |
| 904 | break; |
| 905 | case 'n': /* cursor position query */ |
| 906 | if (esc_args[0] == 6) { |
| 907 | char buf[32]; |
| 908 | sprintf (buf, "\033[%d;%dR", curs_y + 1, curs_x + 1); |
| 909 | back->send (buf, strlen(buf)); |
| 910 | } |
| 911 | break; |
| 912 | case 'h': /* toggle a mode to high */ |
| 913 | toggle_mode (esc_args[0], esc_query, TRUE); |
| 914 | break; |
| 915 | case 'l': /* toggle a mode to low */ |
| 916 | toggle_mode (esc_args[0], esc_query, FALSE); |
| 917 | break; |
| 918 | case 'g': /* clear tabs */ |
| 919 | if (esc_nargs == 1) { |
| 920 | if (esc_args[0] == 0) { |
| 921 | tabs[curs_x] = FALSE; |
| 922 | } else if (esc_args[0] == 3) { |
| 923 | int i; |
| 924 | for (i = 0; i < cols; i++) |
| 925 | tabs[i] = FALSE; |
| 926 | } |
| 927 | } |
| 928 | break; |
| 929 | case 'r': /* set scroll margins */ |
| 930 | if (esc_nargs <= 2) { |
| 931 | int top, bot; |
| 932 | top = def(esc_args[0], 1) - 1; |
| 933 | if (top < 0) |
| 934 | top = 0; |
| 935 | bot = (esc_nargs == 1 ? rows : |
| 936 | def(esc_args[1], rows)) - 1; |
| 937 | if (bot >= rows) |
| 938 | bot = rows-1; |
| 939 | if (top <= bot) { |
| 940 | marg_t = top; |
| 941 | marg_b = bot; |
| 942 | curs_x = 0; |
| 943 | /* |
| 944 | * I used to think the cursor should be |
| 945 | * placed at the top of the newly marginned |
| 946 | * area. Apparently not: VMS TPU falls over |
| 947 | * if so. |
| 948 | */ |
| 949 | curs_y = 0; |
| 950 | fix_cpos; |
| 951 | disptop = scrtop; |
| 952 | must_update = TRUE; |
| 953 | } |
| 954 | } |
| 955 | break; |
| 956 | case 'm': /* set graphics rendition */ |
| 957 | { |
| 958 | int i; |
| 959 | for (i=0; i<esc_nargs; i++) { |
| 960 | switch (def(esc_args[i], 0)) { |
| 961 | case 0: /* restore defaults */ |
| 962 | curr_attr = ATTR_DEFAULT; break; |
| 963 | case 1: /* enable bold */ |
| 964 | curr_attr |= ATTR_BOLD; break; |
| 965 | case 4: /* enable underline */ |
| 966 | case 21: /* (enable double underline) */ |
| 967 | curr_attr |= ATTR_UNDER; break; |
| 968 | case 7: /* enable reverse video */ |
| 969 | curr_attr |= ATTR_REVERSE; break; |
| 970 | case 22: /* disable bold */ |
| 971 | curr_attr &= ~ATTR_BOLD; break; |
| 972 | case 24: /* disable underline */ |
| 973 | curr_attr &= ~ATTR_UNDER; break; |
| 974 | case 27: /* disable reverse video */ |
| 975 | curr_attr &= ~ATTR_REVERSE; break; |
| 976 | case 30: case 31: case 32: case 33: |
| 977 | case 34: case 35: case 36: case 37: |
| 978 | /* foreground */ |
| 979 | curr_attr &= ~ATTR_FGMASK; |
| 980 | curr_attr |= (esc_args[i] - 30) << ATTR_FGSHIFT; |
| 981 | break; |
| 982 | case 39: /* default-foreground */ |
| 983 | curr_attr &= ~ATTR_FGMASK; |
| 984 | curr_attr |= ATTR_DEFFG; |
| 985 | break; |
| 986 | case 40: case 41: case 42: case 43: |
| 987 | case 44: case 45: case 46: case 47: |
| 988 | /* background */ |
| 989 | curr_attr &= ~ATTR_BGMASK; |
| 990 | curr_attr |= (esc_args[i] - 40) << ATTR_BGSHIFT; |
| 991 | break; |
| 992 | case 49: /* default-background */ |
| 993 | curr_attr &= ~ATTR_BGMASK; |
| 994 | curr_attr |= ATTR_DEFBG; |
| 995 | break; |
| 996 | } |
| 997 | } |
| 998 | } |
| 999 | break; |
| 1000 | case 's': /* save cursor */ |
| 1001 | save_cursor (TRUE); |
| 1002 | break; |
| 1003 | case 'u': /* restore cursor */ |
| 1004 | save_cursor (FALSE); |
| 1005 | disptop = scrtop; |
| 1006 | must_update = TRUE; |
| 1007 | break; |
| 1008 | case 't': /* set page size - ie window height */ |
| 1009 | request_resize (cols, def(esc_args[0], 24)); |
| 1010 | deselect(); |
| 1011 | break; |
| 1012 | case 'X': /* write N spaces w/o moving cursor */ |
| 1013 | { |
| 1014 | int n = def(esc_args[0], 1); |
| 1015 | unsigned long *p = cpos; |
| 1016 | if (n > cols - curs_x) |
| 1017 | n = cols - curs_x; |
| 1018 | check_selection (cpos, cpos+n); |
| 1019 | while (n--) |
| 1020 | *p++ = ERASE_CHAR; |
| 1021 | disptop = scrtop; |
| 1022 | must_update = TRUE; |
| 1023 | } |
| 1024 | break; |
| 1025 | case 'x': /* report terminal characteristics */ |
| 1026 | { |
| 1027 | char buf[32]; |
| 1028 | int i = def(esc_args[0], 0); |
| 1029 | if (i == 0 || i == 1) { |
| 1030 | strcpy (buf, "\033[2;1;1;112;112;1;0x"); |
| 1031 | buf[2] += i; |
| 1032 | back->send (buf, 20); |
| 1033 | } |
| 1034 | } |
| 1035 | break; |
| 1036 | } |
| 1037 | break; |
| 1038 | case SET_GL: |
| 1039 | case SET_GR: |
| 1040 | switch (c) { |
| 1041 | case 'A': |
| 1042 | cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_GBCHR; |
| 1043 | break; |
| 1044 | case '0': |
| 1045 | cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_LINEDRW; |
| 1046 | break; |
| 1047 | default: /* specifically, 'B' */ |
| 1048 | cset_attr[termstate == SET_GL ? 0 : 1] = ATTR_ASCII; |
| 1049 | break; |
| 1050 | } |
| 1051 | termstate = TOPLEVEL; |
| 1052 | break; |
| 1053 | case SEEN_OSC: |
| 1054 | osc_w = FALSE; |
| 1055 | switch (c) { |
| 1056 | case '\005': case '\007': case '\b': case '\016': case '\017': |
| 1057 | case '\033': case 0233: case 0234: case 0235: case '\r': |
| 1058 | case '\013': case '\014': case '\n': case '\t': |
| 1059 | termstate = TOPLEVEL; |
| 1060 | goto do_toplevel; /* hack... */ |
| 1061 | case 'P': /* Linux palette sequence */ |
| 1062 | termstate = SEEN_OSC_P; |
| 1063 | osc_strlen = 0; |
| 1064 | break; |
| 1065 | case 'R': /* Linux palette reset */ |
| 1066 | palette_reset(); |
| 1067 | term_invalidate(); |
| 1068 | termstate = TOPLEVEL; |
| 1069 | break; |
| 1070 | case 'W': /* word-set */ |
| 1071 | termstate = SEEN_OSC_W; |
| 1072 | osc_w = TRUE; |
| 1073 | break; |
| 1074 | case '0': case '1': case '2': case '3': case '4': |
| 1075 | case '5': case '6': case '7': case '8': case '9': |
| 1076 | esc_args[0] = 10 * esc_args[0] + c - '0'; |
| 1077 | break; |
| 1078 | case 'L': |
| 1079 | /* |
| 1080 | * Grotty hack to support xterm and DECterm title |
| 1081 | * sequences concurrently. |
| 1082 | */ |
| 1083 | if (esc_args[0] == 2) { |
| 1084 | esc_args[0] = 1; |
| 1085 | break; |
| 1086 | } |
| 1087 | /* else fall through */ |
| 1088 | default: |
| 1089 | termstate = OSC_STRING; |
| 1090 | osc_strlen = 0; |
| 1091 | } |
| 1092 | break; |
| 1093 | case OSC_STRING: |
| 1094 | if (c == 0234 || c == '\007') { |
| 1095 | /* |
| 1096 | * These characters terminate the string; ST and BEL |
| 1097 | * terminate the sequence and trigger instant |
| 1098 | * processing of it, whereas ESC goes back to SEEN_ESC |
| 1099 | * mode unless it is followed by \, in which case it is |
| 1100 | * synonymous with ST in the first place. |
| 1101 | */ |
| 1102 | do_osc(); |
| 1103 | termstate = TOPLEVEL; |
| 1104 | } else if (c == '\033') |
| 1105 | termstate = OSC_MAYBE_ST; |
| 1106 | else if (osc_strlen < OSC_STR_MAX) |
| 1107 | osc_string[osc_strlen++] = c; |
| 1108 | break; |
| 1109 | case SEEN_OSC_P: |
| 1110 | { |
| 1111 | int max = (osc_strlen == 0 ? 21 : 16); |
| 1112 | int val; |
| 1113 | if (c >= '0' && c <= '9') |
| 1114 | val = c - '0'; |
| 1115 | else if (c >= 'A' && c <= 'A'+max-10) |
| 1116 | val = c - 'A' + 10; |
| 1117 | else if (c >= 'a' && c <= 'a'+max-10) |
| 1118 | val = c - 'a' + 10; |
| 1119 | else |
| 1120 | termstate = TOPLEVEL; |
| 1121 | osc_string[osc_strlen++] = val; |
| 1122 | if (osc_strlen >= 7) { |
| 1123 | palette_set (osc_string[0], |
| 1124 | osc_string[1] * 16 + osc_string[2], |
| 1125 | osc_string[3] * 16 + osc_string[4], |
| 1126 | osc_string[5] * 16 + osc_string[6]); |
| 1127 | term_invalidate(); |
| 1128 | termstate = TOPLEVEL; |
| 1129 | } |
| 1130 | } |
| 1131 | break; |
| 1132 | case SEEN_OSC_W: |
| 1133 | switch (c) { |
| 1134 | case '\005': case '\007': case '\b': case '\016': case '\017': |
| 1135 | case '\033': case 0233: case 0234: case 0235: case '\r': |
| 1136 | case '\013': case '\014': case '\n': case '\t': |
| 1137 | termstate = TOPLEVEL; |
| 1138 | goto do_toplevel; /* hack... */ |
| 1139 | case '0': case '1': case '2': case '3': case '4': |
| 1140 | case '5': case '6': case '7': case '8': case '9': |
| 1141 | esc_args[0] = 10 * esc_args[0] + c - '0'; |
| 1142 | break; |
| 1143 | default: |
| 1144 | termstate = OSC_STRING; |
| 1145 | osc_strlen = 0; |
| 1146 | } |
| 1147 | break; |
| 1148 | case SEEN_ESCHASH: |
| 1149 | if (c == '8') { |
| 1150 | unsigned long *p = scrtop; |
| 1151 | int n = rows * (cols+1); |
| 1152 | while (n--) |
| 1153 | *p++ = ATTR_DEFAULT | 'E'; |
| 1154 | disptop = scrtop; |
| 1155 | must_update = TRUE; |
| 1156 | check_selection (scrtop, scrtop + rows * (cols+1)); |
| 1157 | } |
| 1158 | termstate = TOPLEVEL; |
| 1159 | break; |
| 1160 | } |
| 1161 | check_selection (cpos, cpos+1); |
| 1162 | } |
| 1163 | |
| 1164 | if (must_update || nl_count > MAXNL) |
| 1165 | term_update(); |
| 1166 | } |
| 1167 | |
| 1168 | /* |
| 1169 | * Compare two lines to determine whether they are sufficiently |
| 1170 | * alike to scroll-optimise one to the other. Return the degree of |
| 1171 | * similarity. |
| 1172 | */ |
| 1173 | static int linecmp (unsigned long *a, unsigned long *b) { |
| 1174 | int i, n; |
| 1175 | |
| 1176 | for (i=n=0; i < cols; i++) |
| 1177 | n += (*a++ == *b++); |
| 1178 | return n; |
| 1179 | } |
| 1180 | |
| 1181 | /* |
| 1182 | * Given a context, update the window. Out of paranoia, we don't |
| 1183 | * allow WM_PAINT responses to do scrolling optimisations. |
| 1184 | */ |
| 1185 | static void do_paint (Context ctx, int may_optimise){ |
| 1186 | int i, j, start, our_curs_y; |
| 1187 | unsigned long attr, rv, cursor; |
| 1188 | char ch[1024]; |
| 1189 | |
| 1190 | cursor = (has_focus ? ATTR_ACTCURS : ATTR_PASCURS); |
| 1191 | rv = (rvideo ? ATTR_REVERSE : 0); |
| 1192 | our_curs_y = curs_y + (scrtop - disptop) / (cols+1); |
| 1193 | |
| 1194 | for (i=0; i<rows; i++) { |
| 1195 | int idx = i*(cols+1); |
| 1196 | for (j=0; j<=cols; j++,idx++) { |
| 1197 | unsigned long *d = disptop+idx; |
| 1198 | wanttext[idx] = ((*d ^ rv |
| 1199 | ^ (selstart <= d && d < selend ? |
| 1200 | ATTR_REVERSE : 0)) | |
| 1201 | (i==our_curs_y && j==curs_x ? cursor : 0)); |
| 1202 | } |
| 1203 | } |
| 1204 | |
| 1205 | /* |
| 1206 | * We would perform scrolling optimisations in here, if they |
| 1207 | * didn't have a nasty tendency to cause the whole sodding |
| 1208 | * program to hang for a second at speed-critical moments. |
| 1209 | * We'll leave it well alone... |
| 1210 | */ |
| 1211 | |
| 1212 | for (i=0; i<rows; i++) { |
| 1213 | int idx = i*(cols+1); |
| 1214 | start = -1; |
| 1215 | for (j=0; j<=cols; j++,idx++) { |
| 1216 | unsigned long t = wanttext[idx]; |
| 1217 | int needs_update = (j < cols && t != disptext[idx]); |
| 1218 | int keep_going = (start != -1 && needs_update && |
| 1219 | (t & ATTR_MASK) == attr && |
| 1220 | j-start < sizeof(ch)); |
| 1221 | if (start != -1 && !keep_going) { |
| 1222 | do_text (ctx, start, i, ch, j-start, attr); |
| 1223 | start = -1; |
| 1224 | } |
| 1225 | if (needs_update) { |
| 1226 | if (start == -1) { |
| 1227 | start = j; |
| 1228 | attr = t & ATTR_MASK; |
| 1229 | } |
| 1230 | ch[j-start] = (char) (t & CHAR_MASK); |
| 1231 | } |
| 1232 | disptext[idx] = t; |
| 1233 | } |
| 1234 | } |
| 1235 | } |
| 1236 | |
| 1237 | /* |
| 1238 | * Invalidate the whole screen so it will be repainted in full. |
| 1239 | */ |
| 1240 | void term_invalidate(void) { |
| 1241 | int i; |
| 1242 | |
| 1243 | for (i=0; i<rows*(cols+1); i++) |
| 1244 | disptext[i] = ATTR_INVALID; |
| 1245 | } |
| 1246 | |
| 1247 | /* |
| 1248 | * Paint the window in response to a WM_PAINT message. |
| 1249 | */ |
| 1250 | void term_paint (Context ctx, int l, int t, int r, int b) { |
| 1251 | int i, j, left, top, right, bottom; |
| 1252 | |
| 1253 | left = l / font_width; |
| 1254 | right = (r - 1) / font_width; |
| 1255 | top = t / font_height; |
| 1256 | bottom = (b - 1) / font_height; |
| 1257 | for (i = top; i <= bottom && j<rows ; i++) |
| 1258 | for (j = left; j <= right && j<cols ; j++) |
| 1259 | disptext[i*(cols+1)+j] = ATTR_INVALID; |
| 1260 | |
| 1261 | do_paint (ctx, FALSE); |
| 1262 | } |
| 1263 | |
| 1264 | /* |
| 1265 | * Attempt to scroll the scrollback. The second parameter gives the |
| 1266 | * position we want to scroll to; the first is +1 to denote that |
| 1267 | * this position is relative to the beginning of the scrollback, -1 |
| 1268 | * to denote it is relative to the end, and 0 to denote that it is |
| 1269 | * relative to the current position. |
| 1270 | */ |
| 1271 | void term_scroll (int rel, int where) { |
| 1272 | int n = where * (cols+1); |
| 1273 | |
| 1274 | disptop = (rel < 0 ? scrtop : |
| 1275 | rel > 0 ? sbtop : disptop) + n; |
| 1276 | if (disptop < sbtop) |
| 1277 | disptop = sbtop; |
| 1278 | if (disptop > scrtop) |
| 1279 | disptop = scrtop; |
| 1280 | update_sbar(); |
| 1281 | term_update(); |
| 1282 | } |
| 1283 | |
| 1284 | /* |
| 1285 | * Spread the selection outwards according to the selection mode. |
| 1286 | */ |
| 1287 | static unsigned long *sel_spread_half (unsigned long *p, int dir) { |
| 1288 | unsigned long *linestart, *lineend; |
| 1289 | int x; |
| 1290 | short wvalue; |
| 1291 | |
| 1292 | x = (p - text) % (cols+1); |
| 1293 | linestart = p - x; |
| 1294 | lineend = linestart + cols; |
| 1295 | |
| 1296 | switch (selmode) { |
| 1297 | case SM_CHAR: |
| 1298 | /* |
| 1299 | * In this mode, every character is a separate unit, except |
| 1300 | * for runs of spaces at the end of a non-wrapping line. |
| 1301 | */ |
| 1302 | if (!(linestart[cols] & ATTR_WRAPPED)) { |
| 1303 | unsigned long *q = lineend; |
| 1304 | while (q > linestart && (q[-1] & CHAR_MASK) == 0x20) |
| 1305 | q--; |
| 1306 | if (q == lineend) |
| 1307 | q--; |
| 1308 | if (p >= q) |
| 1309 | p = (dir == -1 ? q : lineend - 1); |
| 1310 | } |
| 1311 | break; |
| 1312 | case SM_WORD: |
| 1313 | /* |
| 1314 | * In this mode, the units are maximal runs of characters |
| 1315 | * whose `wordness' has the same value. |
| 1316 | */ |
| 1317 | wvalue = wordness[*p & CHAR_MASK]; |
| 1318 | if (dir == +1) { |
| 1319 | while (p < lineend && wordness[p[1] & CHAR_MASK] == wvalue) |
| 1320 | p++; |
| 1321 | } else { |
| 1322 | while (p > linestart && wordness[p[-1] & CHAR_MASK] == wvalue) |
| 1323 | p--; |
| 1324 | } |
| 1325 | break; |
| 1326 | case SM_LINE: |
| 1327 | /* |
| 1328 | * In this mode, every line is a unit. |
| 1329 | */ |
| 1330 | p = (dir == -1 ? linestart : lineend - 1); |
| 1331 | break; |
| 1332 | } |
| 1333 | return p; |
| 1334 | } |
| 1335 | |
| 1336 | static void sel_spread (void) { |
| 1337 | selstart = sel_spread_half (selstart, -1); |
| 1338 | selend = sel_spread_half (selend - 1, +1) + 1; |
| 1339 | } |
| 1340 | |
| 1341 | void term_mouse (Mouse_Button b, Mouse_Action a, int x, int y) { |
| 1342 | unsigned long *selpoint; |
| 1343 | |
| 1344 | if (y<0) y = 0; |
| 1345 | if (y>=rows) y = rows-1; |
| 1346 | if (x<0) x = 0; |
| 1347 | if (x>=cols) x = cols-1; |
| 1348 | |
| 1349 | selpoint = disptop + y * (cols+1) + x; |
| 1350 | |
| 1351 | if (b == MB_SELECT && a == MA_CLICK) { |
| 1352 | deselect(); |
| 1353 | selstate = ABOUT_TO; |
| 1354 | selanchor = selpoint; |
| 1355 | selmode = SM_CHAR; |
| 1356 | } else if (b == MB_SELECT && (a == MA_2CLK || a == MA_3CLK)) { |
| 1357 | deselect(); |
| 1358 | selmode = (a == MA_2CLK ? SM_WORD : SM_LINE); |
| 1359 | selstate = DRAGGING; |
| 1360 | selstart = selanchor = selpoint; |
| 1361 | selend = selstart + 1; |
| 1362 | sel_spread(); |
| 1363 | } else if ((b == MB_SELECT && a == MA_DRAG) || |
| 1364 | (b == MB_EXTEND && a != MA_RELEASE)) { |
| 1365 | if (selstate == ABOUT_TO && selanchor == selpoint) |
| 1366 | return; |
| 1367 | if (b == MB_EXTEND && a != MA_DRAG && selstate == SELECTED) { |
| 1368 | if (selpoint-selstart < (selend-selstart)/2) |
| 1369 | selanchor = selend - 1; |
| 1370 | else |
| 1371 | selanchor = selstart; |
| 1372 | selstate = DRAGGING; |
| 1373 | } |
| 1374 | if (selstate != ABOUT_TO && selstate != DRAGGING) |
| 1375 | selanchor = selpoint; |
| 1376 | selstate = DRAGGING; |
| 1377 | if (selpoint < selanchor) { |
| 1378 | selstart = selpoint; |
| 1379 | selend = selanchor + 1; |
| 1380 | } else { |
| 1381 | selstart = selanchor; |
| 1382 | selend = selpoint + 1; |
| 1383 | } |
| 1384 | sel_spread(); |
| 1385 | } else if ((b == MB_SELECT || b == MB_EXTEND) && a == MA_RELEASE) { |
| 1386 | if (selstate == DRAGGING) { |
| 1387 | /* |
| 1388 | * We've completed a selection. We now transfer the |
| 1389 | * data to the clipboard. |
| 1390 | */ |
| 1391 | unsigned char *p = selspace; |
| 1392 | unsigned long *q = selstart; |
| 1393 | |
| 1394 | while (q < selend) { |
| 1395 | int nl = FALSE; |
| 1396 | unsigned long *lineend = q - (q-text) % (cols+1) + cols; |
| 1397 | unsigned long *nlpos = lineend; |
| 1398 | |
| 1399 | if (!(*nlpos & ATTR_WRAPPED)) { |
| 1400 | while ((nlpos[-1] & CHAR_MASK) == 0x20 && nlpos > q) |
| 1401 | nlpos--; |
| 1402 | if (nlpos < selend) |
| 1403 | nl = TRUE; |
| 1404 | } |
| 1405 | while (q < nlpos && q < selend) |
| 1406 | *p++ = (unsigned char) (*q++ & CHAR_MASK); |
| 1407 | if (nl) { |
| 1408 | int i; |
| 1409 | for (i=0; i<sizeof(sel_nl); i++) |
| 1410 | *p++ = sel_nl[i]; |
| 1411 | } |
| 1412 | q = lineend + 1; /* start of next line */ |
| 1413 | } |
| 1414 | write_clip (selspace, p - selspace); |
| 1415 | selstate = SELECTED; |
| 1416 | } else |
| 1417 | selstate = NO_SELECTION; |
| 1418 | } else if (b == MB_PASTE && (a==MA_CLICK || a==MA_2CLK || a==MA_3CLK)) { |
| 1419 | char *data; |
| 1420 | int len; |
| 1421 | |
| 1422 | get_clip((void **) &data, &len); |
| 1423 | if (data) { |
| 1424 | char *p, *q; |
| 1425 | p = q = data; |
| 1426 | while (p < data+len) { |
| 1427 | while (p < data+len && |
| 1428 | !(p <= data+len-sizeof(sel_nl) && |
| 1429 | !memcmp(p, sel_nl, sizeof(sel_nl)))) |
| 1430 | p++; |
| 1431 | back->send (q, p-q); |
| 1432 | if (p <= data+len-sizeof(sel_nl) && |
| 1433 | !memcmp(p, sel_nl, sizeof(sel_nl))) { |
| 1434 | back->send ("\r", 1); |
| 1435 | p += sizeof(sel_nl); |
| 1436 | } |
| 1437 | q = p; |
| 1438 | } |
| 1439 | } |
| 1440 | get_clip(NULL, NULL); |
| 1441 | } |
| 1442 | |
| 1443 | term_update(); |
| 1444 | } |
| 1445 | |
| 1446 | static void deselect (void) { |
| 1447 | selstate = NO_SELECTION; |
| 1448 | selstart = selend = scrtop; |
| 1449 | } |
| 1450 | |
| 1451 | void term_deselect (void) { |
| 1452 | deselect(); |
| 1453 | term_update(); |
| 1454 | } |