| 1 | #include <stdio.h> |
| 2 | #include <stdlib.h> |
| 3 | #include <ctype.h> |
| 4 | |
| 5 | #include <time.h> |
| 6 | #include <assert.h> |
| 7 | #include "putty.h" |
| 8 | #include "terminal.h" |
| 9 | |
| 10 | #define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) ) |
| 11 | #define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) ) |
| 12 | #define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x ) |
| 13 | #define posdiff(p1,p2) ( ((p1).y - (p2).y) * (term->cols+1) + (p1).x - (p2).x ) |
| 14 | |
| 15 | /* Product-order comparisons for rectangular block selection. */ |
| 16 | #define posPlt(p1,p2) ( (p1).y <= (p2).y && (p1).x < (p2).x ) |
| 17 | #define posPle(p1,p2) ( (p1).y <= (p2).y && (p1).x <= (p2).x ) |
| 18 | |
| 19 | #define incpos(p) ( (p).x == term->cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) ) |
| 20 | #define decpos(p) ( (p).x == 0 ? ((p).x = term->cols, (p).y--, 1) : ((p).x--, 0) ) |
| 21 | |
| 22 | #define VT52_PLUS |
| 23 | |
| 24 | #define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */ |
| 25 | #define CL_VT100 0x0002 /* VT100 */ |
| 26 | #define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */ |
| 27 | #define CL_VT102 0x0008 /* VT102 */ |
| 28 | #define CL_VT220 0x0010 /* VT220 */ |
| 29 | #define CL_VT320 0x0020 /* VT320 */ |
| 30 | #define CL_VT420 0x0040 /* VT420 */ |
| 31 | #define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */ |
| 32 | #define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */ |
| 33 | #define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */ |
| 34 | #define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */ |
| 35 | #define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */ |
| 36 | |
| 37 | #define TM_VT100 (CL_ANSIMIN|CL_VT100) |
| 38 | #define TM_VT100AVO (TM_VT100|CL_VT100AVO) |
| 39 | #define TM_VT102 (TM_VT100AVO|CL_VT102) |
| 40 | #define TM_VT220 (TM_VT102|CL_VT220) |
| 41 | #define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320) |
| 42 | #define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI) |
| 43 | |
| 44 | #define TM_PUTTY (0xFFFF) |
| 45 | |
| 46 | #define UPDATE_DELAY ((TICKSPERSEC+49)/50)/* ticks to defer window update */ |
| 47 | #define TBLINK_DELAY ((TICKSPERSEC*9+19)/20)/* ticks between text blinks*/ |
| 48 | #define CBLINK_DELAY (CURSORBLINK) /* ticks between cursor blinks */ |
| 49 | #define VBELL_DELAY (VBELL_TIMEOUT) /* visual bell timeout in ticks */ |
| 50 | |
| 51 | #define compatibility(x) \ |
| 52 | if ( ((CL_##x)&term->compatibility_level) == 0 ) { \ |
| 53 | term->termstate=TOPLEVEL; \ |
| 54 | break; \ |
| 55 | } |
| 56 | #define compatibility2(x,y) \ |
| 57 | if ( ((CL_##x|CL_##y)&term->compatibility_level) == 0 ) { \ |
| 58 | term->termstate=TOPLEVEL; \ |
| 59 | break; \ |
| 60 | } |
| 61 | |
| 62 | #define has_compat(x) ( ((CL_##x)&term->compatibility_level) != 0 ) |
| 63 | |
| 64 | const char sco2ansicolour[] = { 0, 4, 2, 6, 1, 5, 3, 7 }; |
| 65 | |
| 66 | #define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t)) |
| 67 | const wchar_t sel_nl[] = SEL_NL; |
| 68 | |
| 69 | /* |
| 70 | * Fetch the character at a particular position in a line array, |
| 71 | * for purposes of `wordtype'. The reason this isn't just a simple |
| 72 | * array reference is that if the character we find is UCSWIDE, |
| 73 | * then we must look one space further to the left. |
| 74 | */ |
| 75 | #define UCSGET(a, x) \ |
| 76 | ( (x)>0 && (a)[(x)].chr == UCSWIDE ? (a)[(x)-1].chr : (a)[(x)].chr ) |
| 77 | |
| 78 | /* |
| 79 | * Detect the various aliases of U+0020 SPACE. |
| 80 | */ |
| 81 | #define IS_SPACE_CHR(chr) \ |
| 82 | ((chr) == 0x20 || (DIRECT_CHAR(chr) && ((chr) & 0xFF) == 0x20)) |
| 83 | |
| 84 | /* |
| 85 | * Spot magic CSETs. |
| 86 | */ |
| 87 | #define CSET_OF(chr) (DIRECT_CHAR(chr)||DIRECT_FONT(chr) ? (chr)&CSET_MASK : 0) |
| 88 | |
| 89 | /* |
| 90 | * Internal prototypes. |
| 91 | */ |
| 92 | static void resizeline(Terminal *, termline *, int); |
| 93 | static termline *lineptr(Terminal *, int, int, int); |
| 94 | static void unlineptr(termline *); |
| 95 | static void do_paint(Terminal *, Context, int); |
| 96 | static void erase_lots(Terminal *, int, int, int); |
| 97 | static void swap_screen(Terminal *, int, int, int); |
| 98 | static void update_sbar(Terminal *); |
| 99 | static void deselect(Terminal *); |
| 100 | static void term_print_finish(Terminal *); |
| 101 | #ifdef OPTIMISE_SCROLL |
| 102 | static void scroll_display(Terminal *, int, int, int); |
| 103 | #endif /* OPTIMISE_SCROLL */ |
| 104 | |
| 105 | static termline *newline(Terminal *term, int cols, int bce) |
| 106 | { |
| 107 | termline *line; |
| 108 | int j; |
| 109 | |
| 110 | line = snew(termline); |
| 111 | line->chars = snewn(cols, termchar); |
| 112 | for (j = 0; j < cols; j++) |
| 113 | line->chars[j] = (bce ? term->erase_char : term->basic_erase_char); |
| 114 | line->cols = line->size = cols; |
| 115 | line->lattr = LATTR_NORM; |
| 116 | line->temporary = FALSE; |
| 117 | line->cc_free = 0; |
| 118 | |
| 119 | return line; |
| 120 | } |
| 121 | |
| 122 | static void freeline(termline *line) |
| 123 | { |
| 124 | if (line) { |
| 125 | sfree(line->chars); |
| 126 | sfree(line); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | static void unlineptr(termline *line) |
| 131 | { |
| 132 | if (line->temporary) |
| 133 | freeline(line); |
| 134 | } |
| 135 | |
| 136 | /* |
| 137 | * Diagnostic function: verify that a termline has a correct |
| 138 | * combining character structure. |
| 139 | * |
| 140 | * XXX-REMOVE-BEFORE-RELEASE: This is a performance-intensive |
| 141 | * check. Although it's currently really useful for getting all the |
| 142 | * bugs out of the new cc stuff, it will want to be absent when we |
| 143 | * make a proper release. |
| 144 | */ |
| 145 | static void cc_check(termline *line) |
| 146 | { |
| 147 | unsigned char *flags; |
| 148 | int i, j; |
| 149 | |
| 150 | assert(line->size >= line->cols); |
| 151 | |
| 152 | flags = snewn(line->size, unsigned char); |
| 153 | |
| 154 | for (i = 0; i < line->size; i++) |
| 155 | flags[i] = (i < line->cols); |
| 156 | |
| 157 | for (i = 0; i < line->cols; i++) { |
| 158 | j = i; |
| 159 | while (line->chars[j].cc_next) { |
| 160 | j += line->chars[j].cc_next; |
| 161 | assert(j >= line->cols && j < line->size); |
| 162 | assert(!flags[j]); |
| 163 | flags[j] = TRUE; |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | j = line->cc_free; |
| 168 | if (j) { |
| 169 | while (1) { |
| 170 | assert(j >= line->cols && j < line->size); |
| 171 | assert(!flags[j]); |
| 172 | flags[j] = TRUE; |
| 173 | if (line->chars[j].cc_next) |
| 174 | j += line->chars[j].cc_next; |
| 175 | else |
| 176 | break; |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | j = 0; |
| 181 | for (i = 0; i < line->size; i++) |
| 182 | j += (flags[i] != 0); |
| 183 | |
| 184 | assert(j == line->size); |
| 185 | |
| 186 | sfree(flags); |
| 187 | } |
| 188 | |
| 189 | /* |
| 190 | * Add a combining character to a character cell. |
| 191 | */ |
| 192 | static void add_cc(termline *line, int col, unsigned long chr) |
| 193 | { |
| 194 | int newcc; |
| 195 | |
| 196 | assert(col >= 0 && col < line->cols); |
| 197 | |
| 198 | /* |
| 199 | * Start by extending the cols array if the free list is empty. |
| 200 | */ |
| 201 | if (!line->cc_free) { |
| 202 | int n = line->size; |
| 203 | line->size += 16 + (line->size - line->cols) / 2; |
| 204 | line->chars = sresize(line->chars, line->size, termchar); |
| 205 | line->cc_free = n; |
| 206 | while (n < line->size) { |
| 207 | if (n+1 < line->size) |
| 208 | line->chars[n].cc_next = 1; |
| 209 | else |
| 210 | line->chars[n].cc_next = 0; |
| 211 | n++; |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | /* |
| 216 | * Now walk the cc list of the cell in question. |
| 217 | */ |
| 218 | while (line->chars[col].cc_next) |
| 219 | col += line->chars[col].cc_next; |
| 220 | |
| 221 | /* |
| 222 | * `col' now points at the last cc currently in this cell; so |
| 223 | * we simply add another one. |
| 224 | */ |
| 225 | newcc = line->cc_free; |
| 226 | if (line->chars[newcc].cc_next) |
| 227 | line->cc_free = newcc + line->chars[newcc].cc_next; |
| 228 | else |
| 229 | line->cc_free = 0; |
| 230 | line->chars[newcc].cc_next = 0; |
| 231 | line->chars[newcc].chr = chr; |
| 232 | line->chars[col].cc_next = newcc - col; |
| 233 | |
| 234 | cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */ |
| 235 | } |
| 236 | |
| 237 | /* |
| 238 | * Clear the combining character list in a character cell. |
| 239 | */ |
| 240 | static void clear_cc(termline *line, int col) |
| 241 | { |
| 242 | int oldfree, origcol = col; |
| 243 | |
| 244 | assert(col >= 0 && col < line->cols); |
| 245 | |
| 246 | if (!line->chars[col].cc_next) |
| 247 | return; /* nothing needs doing */ |
| 248 | |
| 249 | oldfree = line->cc_free; |
| 250 | line->cc_free = col + line->chars[col].cc_next; |
| 251 | while (line->chars[col].cc_next) |
| 252 | col += line->chars[col].cc_next; |
| 253 | if (oldfree) |
| 254 | line->chars[col].cc_next = oldfree - col; |
| 255 | else |
| 256 | line->chars[col].cc_next = 0; |
| 257 | |
| 258 | line->chars[origcol].cc_next = 0; |
| 259 | |
| 260 | cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */ |
| 261 | } |
| 262 | |
| 263 | /* |
| 264 | * Compare two character cells for equality. Special case required |
| 265 | * in do_paint() where we override what we expect the chr and attr |
| 266 | * fields to be. |
| 267 | */ |
| 268 | static int termchars_equal_override(termchar *a, termchar *b, |
| 269 | unsigned long bchr, unsigned long battr) |
| 270 | { |
| 271 | /* FULL-TERMCHAR */ |
| 272 | if (a->chr != bchr) |
| 273 | return FALSE; |
| 274 | if ((a->attr &~ DATTR_MASK) != (battr &~ DATTR_MASK)) |
| 275 | return FALSE; |
| 276 | while (a->cc_next || b->cc_next) { |
| 277 | if (!a->cc_next || !b->cc_next) |
| 278 | return FALSE; /* one cc-list ends, other does not */ |
| 279 | a += a->cc_next; |
| 280 | b += b->cc_next; |
| 281 | if (a->chr != b->chr) |
| 282 | return FALSE; |
| 283 | } |
| 284 | return TRUE; |
| 285 | } |
| 286 | |
| 287 | static int termchars_equal(termchar *a, termchar *b) |
| 288 | { |
| 289 | return termchars_equal_override(a, b, b->chr, b->attr); |
| 290 | } |
| 291 | |
| 292 | /* |
| 293 | * Copy a character cell. (Requires a pointer to the destination |
| 294 | * termline, so as to access its free list.) |
| 295 | */ |
| 296 | static void copy_termchar(termline *destline, int x, termchar *src) |
| 297 | { |
| 298 | clear_cc(destline, x); |
| 299 | |
| 300 | destline->chars[x] = *src; /* copy everything except cc-list */ |
| 301 | destline->chars[x].cc_next = 0; /* and make sure this is zero */ |
| 302 | |
| 303 | while (src->cc_next) { |
| 304 | src += src->cc_next; |
| 305 | add_cc(destline, x, src->chr); |
| 306 | } |
| 307 | |
| 308 | cc_check(destline); /* XXX-REMOVE-BEFORE-RELEASE */ |
| 309 | } |
| 310 | |
| 311 | /* |
| 312 | * Move a character cell within its termline. |
| 313 | */ |
| 314 | static void move_termchar(termline *line, termchar *dest, termchar *src) |
| 315 | { |
| 316 | /* First clear the cc list from the original char, just in case. */ |
| 317 | clear_cc(line, dest - line->chars); |
| 318 | |
| 319 | /* Move the character cell and adjust its cc_next. */ |
| 320 | *dest = *src; /* copy everything except cc-list */ |
| 321 | if (src->cc_next) |
| 322 | dest->cc_next = src->cc_next - (dest-src); |
| 323 | |
| 324 | /* Ensure the original cell doesn't have a cc list. */ |
| 325 | src->cc_next = 0; |
| 326 | |
| 327 | cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */ |
| 328 | } |
| 329 | |
| 330 | /* |
| 331 | * Compress and decompress a termline into an RLE-based format for |
| 332 | * storing in scrollback. (Since scrollback almost never needs to |
| 333 | * be modified and exists in huge quantities, this is a sensible |
| 334 | * tradeoff, particularly since it allows us to continue adding |
| 335 | * features to the main termchar structure without proportionally |
| 336 | * bloating the terminal emulator's memory footprint unless those |
| 337 | * features are in constant use.) |
| 338 | */ |
| 339 | struct buf { |
| 340 | unsigned char *data; |
| 341 | int len, size; |
| 342 | }; |
| 343 | static void add(struct buf *b, unsigned char c) |
| 344 | { |
| 345 | if (b->len >= b->size) { |
| 346 | b->size = (b->len * 3 / 2) + 512; |
| 347 | b->data = sresize(b->data, b->size, unsigned char); |
| 348 | } |
| 349 | b->data[b->len++] = c; |
| 350 | } |
| 351 | static int get(struct buf *b) |
| 352 | { |
| 353 | return b->data[b->len++]; |
| 354 | } |
| 355 | static void makerle(struct buf *b, termline *ldata, |
| 356 | void (*makeliteral)(struct buf *b, termchar *c, |
| 357 | unsigned long *state)) |
| 358 | { |
| 359 | int hdrpos, hdrsize, n, prevlen, prevpos, thislen, thispos, prev2; |
| 360 | termchar *c = ldata->chars; |
| 361 | unsigned long state = 0, oldstate; |
| 362 | |
| 363 | n = ldata->cols; |
| 364 | |
| 365 | hdrpos = b->len; |
| 366 | hdrsize = 0; |
| 367 | add(b, 0); |
| 368 | prevlen = prevpos = 0; |
| 369 | prev2 = FALSE; |
| 370 | |
| 371 | while (n-- > 0) { |
| 372 | thispos = b->len; |
| 373 | makeliteral(b, c++, &state); |
| 374 | thislen = b->len - thispos; |
| 375 | if (thislen == prevlen && |
| 376 | !memcmp(b->data + prevpos, b->data + thispos, thislen)) { |
| 377 | /* |
| 378 | * This literal precisely matches the previous one. |
| 379 | * Turn it into a run if it's worthwhile. |
| 380 | * |
| 381 | * With one-byte literals, it costs us two bytes to |
| 382 | * encode a run, plus another byte to write the header |
| 383 | * to resume normal output; so a three-element run is |
| 384 | * neutral, and anything beyond that is unconditionally |
| 385 | * worthwhile. With two-byte literals or more, even a |
| 386 | * 2-run is a win. |
| 387 | */ |
| 388 | if (thislen > 1 || prev2) { |
| 389 | int runpos, runlen; |
| 390 | |
| 391 | /* |
| 392 | * It's worth encoding a run. Start at prevpos, |
| 393 | * unless hdrsize==0 in which case we can back up |
| 394 | * another one and start by overwriting hdrpos. |
| 395 | */ |
| 396 | |
| 397 | hdrsize--; /* remove the literal at prevpos */ |
| 398 | if (prev2) { |
| 399 | assert(hdrsize > 0); |
| 400 | hdrsize--; |
| 401 | prevpos -= prevlen;/* and possibly another one */ |
| 402 | } |
| 403 | |
| 404 | if (hdrsize == 0) { |
| 405 | assert(prevpos == hdrpos + 1); |
| 406 | runpos = hdrpos; |
| 407 | b->len = prevpos+prevlen; |
| 408 | } else { |
| 409 | memmove(b->data + prevpos+1, b->data + prevpos, prevlen); |
| 410 | runpos = prevpos; |
| 411 | b->len = prevpos+prevlen+1; |
| 412 | /* |
| 413 | * Terminate the previous run of ordinary |
| 414 | * literals. |
| 415 | */ |
| 416 | assert(hdrsize >= 1 && hdrsize <= 128); |
| 417 | b->data[hdrpos] = hdrsize - 1; |
| 418 | } |
| 419 | |
| 420 | runlen = prev2 ? 3 : 2; |
| 421 | |
| 422 | while (n > 0 && runlen < 129) { |
| 423 | int tmppos, tmplen; |
| 424 | tmppos = b->len; |
| 425 | oldstate = state; |
| 426 | makeliteral(b, c, &state); |
| 427 | tmplen = b->len - tmppos; |
| 428 | b->len = tmppos; |
| 429 | if (tmplen != thislen || |
| 430 | memcmp(b->data + runpos+1, b->data + tmppos, tmplen)) { |
| 431 | state = oldstate; |
| 432 | break; /* run over */ |
| 433 | } |
| 434 | n--, c++, runlen++; |
| 435 | } |
| 436 | |
| 437 | assert(runlen >= 2 && runlen <= 129); |
| 438 | b->data[runpos] = runlen + 0x80 - 2; |
| 439 | |
| 440 | hdrpos = b->len; |
| 441 | hdrsize = 0; |
| 442 | add(b, 0); |
| 443 | /* And ensure this run doesn't interfere with the next. */ |
| 444 | prevlen = prevpos = 0; |
| 445 | prev2 = FALSE; |
| 446 | |
| 447 | continue; |
| 448 | } else { |
| 449 | /* |
| 450 | * Just flag that the previous two literals were |
| 451 | * identical, in case we find a third identical one |
| 452 | * we want to turn into a run. |
| 453 | */ |
| 454 | prev2 = TRUE; |
| 455 | prevlen = thislen; |
| 456 | prevpos = thispos; |
| 457 | } |
| 458 | } else { |
| 459 | prev2 = FALSE; |
| 460 | prevlen = thislen; |
| 461 | prevpos = thispos; |
| 462 | } |
| 463 | |
| 464 | /* |
| 465 | * This character isn't (yet) part of a run. Add it to |
| 466 | * hdrsize. |
| 467 | */ |
| 468 | hdrsize++; |
| 469 | if (hdrsize == 128) { |
| 470 | b->data[hdrpos] = hdrsize - 1; |
| 471 | hdrpos = b->len; |
| 472 | hdrsize = 0; |
| 473 | add(b, 0); |
| 474 | prevlen = prevpos = 0; |
| 475 | prev2 = FALSE; |
| 476 | } |
| 477 | } |
| 478 | |
| 479 | /* |
| 480 | * Clean up. |
| 481 | */ |
| 482 | if (hdrsize > 0) { |
| 483 | assert(hdrsize <= 128); |
| 484 | b->data[hdrpos] = hdrsize - 1; |
| 485 | } else { |
| 486 | b->len = hdrpos; |
| 487 | } |
| 488 | } |
| 489 | static void makeliteral_chr(struct buf *b, termchar *c, unsigned long *state) |
| 490 | { |
| 491 | /* |
| 492 | * My encoding for characters is UTF-8-like, in that it stores |
| 493 | * 7-bit ASCII in one byte and uses high-bit-set bytes as |
| 494 | * introducers to indicate a longer sequence. However, it's |
| 495 | * unlike UTF-8 in that it doesn't need to be able to |
| 496 | * resynchronise, and therefore I don't want to waste two bits |
| 497 | * per byte on having recognisable continuation characters. |
| 498 | * Also I don't want to rule out the possibility that I may one |
| 499 | * day use values 0x80000000-0xFFFFFFFF for interesting |
| 500 | * purposes, so unlike UTF-8 I need a full 32-bit range. |
| 501 | * Accordingly, here is my encoding: |
| 502 | * |
| 503 | * 00000000-0000007F: 0xxxxxxx (but see below) |
| 504 | * 00000080-00003FFF: 10xxxxxx xxxxxxxx |
| 505 | * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx |
| 506 | * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx |
| 507 | * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx |
| 508 | * |
| 509 | * (`Z' is like `x' but is always going to be zero since the |
| 510 | * values I'm encoding don't go above 2^32. In principle the |
| 511 | * five-byte form of the encoding could extend to 2^35, and |
| 512 | * there could be six-, seven-, eight- and nine-byte forms as |
| 513 | * well to allow up to 64-bit values to be encoded. But that's |
| 514 | * completely unnecessary for these purposes!) |
| 515 | * |
| 516 | * The encoding as written above would be very simple, except |
| 517 | * that 7-bit ASCII can occur in several different ways in the |
| 518 | * terminal data; sometimes it crops up in the D800 page |
| 519 | * (CSET_ASCII) but at other times it's in the 0000 page (real |
| 520 | * Unicode). Therefore, this encoding is actually _stateful_: |
| 521 | * the one-byte encoding of 00-7F actually indicates `reuse the |
| 522 | * upper three bytes of the last character', and to encode an |
| 523 | * absolute value of 00-7F you need to use the two-byte form |
| 524 | * instead. |
| 525 | */ |
| 526 | if ((c->chr & ~0x7F) == *state) { |
| 527 | add(b, (unsigned char)(c->chr & 0x7F)); |
| 528 | } else if (c->chr < 0x4000) { |
| 529 | add(b, (unsigned char)(((c->chr >> 8) & 0x3F) | 0x80)); |
| 530 | add(b, (unsigned char)(c->chr & 0xFF)); |
| 531 | } else if (c->chr < 0x200000) { |
| 532 | add(b, (unsigned char)(((c->chr >> 16) & 0x1F) | 0xC0)); |
| 533 | add(b, (unsigned char)((c->chr >> 8) & 0xFF)); |
| 534 | add(b, (unsigned char)(c->chr & 0xFF)); |
| 535 | } else if (c->chr < 0x10000000) { |
| 536 | add(b, (unsigned char)(((c->chr >> 24) & 0x0F) | 0xE0)); |
| 537 | add(b, (unsigned char)((c->chr >> 16) & 0xFF)); |
| 538 | add(b, (unsigned char)((c->chr >> 8) & 0xFF)); |
| 539 | add(b, (unsigned char)(c->chr & 0xFF)); |
| 540 | } else { |
| 541 | add(b, 0xF0); |
| 542 | add(b, (unsigned char)((c->chr >> 24) & 0xFF)); |
| 543 | add(b, (unsigned char)((c->chr >> 16) & 0xFF)); |
| 544 | add(b, (unsigned char)((c->chr >> 8) & 0xFF)); |
| 545 | add(b, (unsigned char)(c->chr & 0xFF)); |
| 546 | } |
| 547 | *state = c->chr & ~0xFF; |
| 548 | } |
| 549 | static void makeliteral_attr(struct buf *b, termchar *c, unsigned long *state) |
| 550 | { |
| 551 | /* |
| 552 | * My encoding for attributes is 16-bit-granular and assumes |
| 553 | * that the top bit of the word is never required. I either |
| 554 | * store a two-byte value with the top bit clear (indicating |
| 555 | * just that value), or a four-byte value with the top bit set |
| 556 | * (indicating the same value with its top bit clear). |
| 557 | * |
| 558 | * However, first I permute the bits of the attribute value, so |
| 559 | * that the eight bits of colour (four in each of fg and bg) |
| 560 | * which are never non-zero unless xterm 256-colour mode is in |
| 561 | * use are placed higher up the word than everything else. This |
| 562 | * ensures that attribute values remain 16-bit _unless_ the |
| 563 | * user uses extended colour. |
| 564 | */ |
| 565 | unsigned attr, colourbits; |
| 566 | |
| 567 | attr = c->attr; |
| 568 | |
| 569 | assert(ATTR_BGSHIFT > ATTR_FGSHIFT); |
| 570 | |
| 571 | colourbits = (attr >> (ATTR_BGSHIFT + 4)) & 0xF; |
| 572 | colourbits <<= 4; |
| 573 | colourbits |= (attr >> (ATTR_FGSHIFT + 4)) & 0xF; |
| 574 | |
| 575 | attr = (((attr >> (ATTR_BGSHIFT + 8)) << (ATTR_BGSHIFT + 4)) | |
| 576 | (attr & ((1 << (ATTR_BGSHIFT + 4))-1))); |
| 577 | attr = (((attr >> (ATTR_FGSHIFT + 8)) << (ATTR_FGSHIFT + 4)) | |
| 578 | (attr & ((1 << (ATTR_FGSHIFT + 4))-1))); |
| 579 | |
| 580 | attr |= (colourbits << (32-9)); |
| 581 | |
| 582 | if (attr < 0x8000) { |
| 583 | add(b, (unsigned char)((attr >> 8) & 0xFF)); |
| 584 | add(b, (unsigned char)(attr & 0xFF)); |
| 585 | } else { |
| 586 | add(b, (unsigned char)(((attr >> 24) & 0x7F) | 0x80)); |
| 587 | add(b, (unsigned char)((attr >> 16) & 0xFF)); |
| 588 | add(b, (unsigned char)((attr >> 8) & 0xFF)); |
| 589 | add(b, (unsigned char)(attr & 0xFF)); |
| 590 | } |
| 591 | } |
| 592 | static void makeliteral_cc(struct buf *b, termchar *c, unsigned long *state) |
| 593 | { |
| 594 | /* |
| 595 | * For combining characters, I just encode a bunch of ordinary |
| 596 | * chars using makeliteral_chr, and terminate with a \0 |
| 597 | * character (which I know won't come up as a combining char |
| 598 | * itself). |
| 599 | * |
| 600 | * I don't use the stateful encoding in makeliteral_chr. |
| 601 | */ |
| 602 | unsigned long zstate; |
| 603 | termchar z; |
| 604 | |
| 605 | while (c->cc_next) { |
| 606 | c += c->cc_next; |
| 607 | |
| 608 | assert(c->chr != 0); |
| 609 | |
| 610 | zstate = 0; |
| 611 | makeliteral_chr(b, c, &zstate); |
| 612 | } |
| 613 | |
| 614 | z.chr = 0; |
| 615 | zstate = 0; |
| 616 | makeliteral_chr(b, &z, &zstate); |
| 617 | } |
| 618 | |
| 619 | static termline *decompressline(unsigned char *data, int *bytes_used); |
| 620 | |
| 621 | static unsigned char *compressline(termline *ldata) |
| 622 | { |
| 623 | struct buf buffer = { NULL, 0, 0 }, *b = &buffer; |
| 624 | |
| 625 | /* |
| 626 | * First, store the column count, 7 bits at a time, least |
| 627 | * significant `digit' first, with the high bit set on all but |
| 628 | * the last. |
| 629 | */ |
| 630 | { |
| 631 | int n = ldata->cols; |
| 632 | while (n >= 128) { |
| 633 | add(b, (unsigned char)((n & 0x7F) | 0x80)); |
| 634 | n >>= 7; |
| 635 | } |
| 636 | add(b, (unsigned char)(n)); |
| 637 | } |
| 638 | |
| 639 | /* |
| 640 | * Next store the lattrs; same principle. |
| 641 | */ |
| 642 | { |
| 643 | int n = ldata->lattr; |
| 644 | while (n >= 128) { |
| 645 | add(b, (unsigned char)((n & 0x7F) | 0x80)); |
| 646 | n >>= 7; |
| 647 | } |
| 648 | add(b, (unsigned char)(n)); |
| 649 | } |
| 650 | |
| 651 | /* |
| 652 | * Now we store a sequence of separate run-length encoded |
| 653 | * fragments, each containing exactly as many symbols as there |
| 654 | * are columns in the ldata. |
| 655 | * |
| 656 | * All of these have a common basic format: |
| 657 | * |
| 658 | * - a byte 00-7F indicates that X+1 literals follow it |
| 659 | * - a byte 80-FF indicates that a single literal follows it |
| 660 | * and expects to be repeated (X-0x80)+2 times. |
| 661 | * |
| 662 | * The format of the `literals' varies between the fragments. |
| 663 | */ |
| 664 | makerle(b, ldata, makeliteral_chr); |
| 665 | makerle(b, ldata, makeliteral_attr); |
| 666 | makerle(b, ldata, makeliteral_cc); |
| 667 | |
| 668 | /* |
| 669 | * Diagnostics: ensure that the compressed data really does |
| 670 | * decompress to the right thing. |
| 671 | * |
| 672 | * XXX-REMOVE-BEFORE-RELEASE: This is a bit performance-heavy |
| 673 | * to be leaving in production code. |
| 674 | */ |
| 675 | #ifndef CHECK_SB_COMPRESSION |
| 676 | { |
| 677 | int dused; |
| 678 | termline *dcl; |
| 679 | int i; |
| 680 | |
| 681 | #ifdef DIAGNOSTIC_SB_COMPRESSION |
| 682 | for (i = 0; i < b->len; i++) { |
| 683 | printf(" %02x ", b->data[i]); |
| 684 | } |
| 685 | printf("\n"); |
| 686 | #endif |
| 687 | |
| 688 | dcl = decompressline(b->data, &dused); |
| 689 | assert(b->len == dused); |
| 690 | assert(ldata->cols == dcl->cols); |
| 691 | assert(ldata->lattr == dcl->lattr); |
| 692 | for (i = 0; i < ldata->cols; i++) |
| 693 | assert(termchars_equal(&ldata->chars[i], &dcl->chars[i])); |
| 694 | |
| 695 | #ifdef DIAGNOSTIC_SB_COMPRESSION |
| 696 | printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n", |
| 697 | ldata->cols, 4 * ldata->cols, dused, |
| 698 | (double)dused / (4 * ldata->cols)); |
| 699 | #endif |
| 700 | |
| 701 | freeline(dcl); |
| 702 | } |
| 703 | #endif |
| 704 | |
| 705 | /* |
| 706 | * Trim the allocated memory so we don't waste any, and return. |
| 707 | */ |
| 708 | return sresize(b->data, b->len, unsigned char); |
| 709 | } |
| 710 | |
| 711 | static void readrle(struct buf *b, termline *ldata, |
| 712 | void (*readliteral)(struct buf *b, termchar *c, |
| 713 | termline *ldata, unsigned long *state)) |
| 714 | { |
| 715 | int n = 0; |
| 716 | unsigned long state = 0; |
| 717 | |
| 718 | while (n < ldata->cols) { |
| 719 | int hdr = get(b); |
| 720 | |
| 721 | if (hdr >= 0x80) { |
| 722 | /* A run. */ |
| 723 | |
| 724 | int pos = b->len, count = hdr + 2 - 0x80; |
| 725 | while (count--) { |
| 726 | assert(n < ldata->cols); |
| 727 | b->len = pos; |
| 728 | readliteral(b, ldata->chars + n, ldata, &state); |
| 729 | n++; |
| 730 | } |
| 731 | } else { |
| 732 | /* Just a sequence of consecutive literals. */ |
| 733 | |
| 734 | int count = hdr + 1; |
| 735 | while (count--) { |
| 736 | assert(n < ldata->cols); |
| 737 | readliteral(b, ldata->chars + n, ldata, &state); |
| 738 | n++; |
| 739 | } |
| 740 | } |
| 741 | } |
| 742 | |
| 743 | assert(n == ldata->cols); |
| 744 | } |
| 745 | static void readliteral_chr(struct buf *b, termchar *c, termline *ldata, |
| 746 | unsigned long *state) |
| 747 | { |
| 748 | int byte; |
| 749 | |
| 750 | /* |
| 751 | * 00000000-0000007F: 0xxxxxxx |
| 752 | * 00000080-00003FFF: 10xxxxxx xxxxxxxx |
| 753 | * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx |
| 754 | * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx |
| 755 | * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx |
| 756 | */ |
| 757 | |
| 758 | byte = get(b); |
| 759 | if (byte < 0x80) { |
| 760 | c->chr = byte | *state; |
| 761 | } else if (byte < 0xC0) { |
| 762 | c->chr = (byte &~ 0xC0) << 8; |
| 763 | c->chr |= get(b); |
| 764 | } else if (byte < 0xE0) { |
| 765 | c->chr = (byte &~ 0xE0) << 16; |
| 766 | c->chr |= get(b) << 8; |
| 767 | c->chr |= get(b); |
| 768 | } else if (byte < 0xF0) { |
| 769 | c->chr = (byte &~ 0xF0) << 24; |
| 770 | c->chr |= get(b) << 16; |
| 771 | c->chr |= get(b) << 8; |
| 772 | c->chr |= get(b); |
| 773 | } else { |
| 774 | assert(byte == 0xF0); |
| 775 | c->chr = get(b) << 24; |
| 776 | c->chr |= get(b) << 16; |
| 777 | c->chr |= get(b) << 8; |
| 778 | c->chr |= get(b); |
| 779 | } |
| 780 | *state = c->chr & ~0xFF; |
| 781 | } |
| 782 | static void readliteral_attr(struct buf *b, termchar *c, termline *ldata, |
| 783 | unsigned long *state) |
| 784 | { |
| 785 | unsigned val, attr, colourbits; |
| 786 | |
| 787 | val = get(b) << 8; |
| 788 | val |= get(b); |
| 789 | |
| 790 | if (val >= 0x8000) { |
| 791 | val &= ~0x8000; |
| 792 | val <<= 16; |
| 793 | val |= get(b) << 8; |
| 794 | val |= get(b); |
| 795 | } |
| 796 | |
| 797 | colourbits = (val >> (32-9)) & 0xFF; |
| 798 | attr = (val & ((1<<(32-9))-1)); |
| 799 | |
| 800 | attr = (((attr >> (ATTR_FGSHIFT + 4)) << (ATTR_FGSHIFT + 8)) | |
| 801 | (attr & ((1 << (ATTR_FGSHIFT + 4))-1))); |
| 802 | attr = (((attr >> (ATTR_BGSHIFT + 4)) << (ATTR_BGSHIFT + 8)) | |
| 803 | (attr & ((1 << (ATTR_BGSHIFT + 4))-1))); |
| 804 | |
| 805 | attr |= (colourbits >> 4) << (ATTR_BGSHIFT + 4); |
| 806 | attr |= (colourbits & 0xF) << (ATTR_FGSHIFT + 4); |
| 807 | |
| 808 | c->attr = attr; |
| 809 | } |
| 810 | static void readliteral_cc(struct buf *b, termchar *c, termline *ldata, |
| 811 | unsigned long *state) |
| 812 | { |
| 813 | termchar n; |
| 814 | unsigned long zstate; |
| 815 | int x = c - ldata->chars; |
| 816 | |
| 817 | c->cc_next = 0; |
| 818 | |
| 819 | while (1) { |
| 820 | zstate = 0; |
| 821 | readliteral_chr(b, &n, ldata, &zstate); |
| 822 | if (!n.chr) |
| 823 | break; |
| 824 | add_cc(ldata, x, n.chr); |
| 825 | } |
| 826 | } |
| 827 | |
| 828 | static termline *decompressline(unsigned char *data, int *bytes_used) |
| 829 | { |
| 830 | int ncols, byte, shift; |
| 831 | struct buf buffer, *b = &buffer; |
| 832 | termline *ldata; |
| 833 | |
| 834 | b->data = data; |
| 835 | b->len = 0; |
| 836 | |
| 837 | /* |
| 838 | * First read in the column count. |
| 839 | */ |
| 840 | ncols = shift = 0; |
| 841 | do { |
| 842 | byte = get(b); |
| 843 | ncols |= (byte & 0x7F) << shift; |
| 844 | shift += 7; |
| 845 | } while (byte & 0x80); |
| 846 | |
| 847 | /* |
| 848 | * Now create the output termline. |
| 849 | */ |
| 850 | ldata = snew(termline); |
| 851 | ldata->chars = snewn(ncols, termchar); |
| 852 | ldata->cols = ldata->size = ncols; |
| 853 | ldata->temporary = TRUE; |
| 854 | ldata->cc_free = 0; |
| 855 | |
| 856 | /* |
| 857 | * We must set all the cc pointers in ldata->chars to 0 right |
| 858 | * now, so that cc diagnostics that verify the integrity of the |
| 859 | * whole line will make sense while we're in the middle of |
| 860 | * building it up. |
| 861 | */ |
| 862 | { |
| 863 | int i; |
| 864 | for (i = 0; i < ldata->cols; i++) |
| 865 | ldata->chars[i].cc_next = 0; |
| 866 | } |
| 867 | |
| 868 | /* |
| 869 | * Now read in the lattr. |
| 870 | */ |
| 871 | ldata->lattr = shift = 0; |
| 872 | do { |
| 873 | byte = get(b); |
| 874 | ldata->lattr |= (byte & 0x7F) << shift; |
| 875 | shift += 7; |
| 876 | } while (byte & 0x80); |
| 877 | |
| 878 | /* |
| 879 | * Now we read in each of the RLE streams in turn. |
| 880 | */ |
| 881 | readrle(b, ldata, readliteral_chr); |
| 882 | readrle(b, ldata, readliteral_attr); |
| 883 | readrle(b, ldata, readliteral_cc); |
| 884 | |
| 885 | /* Return the number of bytes read, for diagnostic purposes. */ |
| 886 | if (bytes_used) |
| 887 | *bytes_used = b->len; |
| 888 | |
| 889 | return ldata; |
| 890 | } |
| 891 | |
| 892 | /* |
| 893 | * Resize a line to make it `cols' columns wide. |
| 894 | */ |
| 895 | static void resizeline(Terminal *term, termline *line, int cols) |
| 896 | { |
| 897 | int i, oldcols; |
| 898 | |
| 899 | if (line->cols != cols) { |
| 900 | |
| 901 | oldcols = line->cols; |
| 902 | |
| 903 | /* |
| 904 | * This line is the wrong length, which probably means it |
| 905 | * hasn't been accessed since a resize. Resize it now. |
| 906 | * |
| 907 | * First, go through all the characters that will be thrown |
| 908 | * out in the resize (if we're shrinking the line) and |
| 909 | * return their cc lists to the cc free list. |
| 910 | */ |
| 911 | for (i = cols; i < oldcols; i++) |
| 912 | clear_cc(line, i); |
| 913 | |
| 914 | /* |
| 915 | * If we're shrinking the line, we now bodily move the |
| 916 | * entire cc section from where it started to where it now |
| 917 | * needs to be. (We have to do this before the resize, so |
| 918 | * that the data we're copying is still there. However, if |
| 919 | * we're expanding, we have to wait until _after_ the |
| 920 | * resize so that the space we're copying into is there.) |
| 921 | */ |
| 922 | if (cols < oldcols) |
| 923 | memmove(line->chars + cols, line->chars + oldcols, |
| 924 | (line->size - line->cols) * TSIZE); |
| 925 | |
| 926 | /* |
| 927 | * Now do the actual resize, leaving the _same_ amount of |
| 928 | * cc space as there was to begin with. |
| 929 | */ |
| 930 | line->size += cols - oldcols; |
| 931 | line->chars = sresize(line->chars, line->size, TTYPE); |
| 932 | line->cols = cols; |
| 933 | |
| 934 | /* |
| 935 | * If we're expanding the line, _now_ we move the cc |
| 936 | * section. |
| 937 | */ |
| 938 | if (cols > oldcols) |
| 939 | memmove(line->chars + cols, line->chars + oldcols, |
| 940 | (line->size - line->cols) * TSIZE); |
| 941 | |
| 942 | /* |
| 943 | * Go through what's left of the original line, and adjust |
| 944 | * the first cc_next pointer in each list. (All the |
| 945 | * subsequent ones are still valid because they are |
| 946 | * relative offsets within the cc block.) Also do the same |
| 947 | * to the head of the cc_free list. |
| 948 | */ |
| 949 | for (i = 0; i < oldcols && i < cols; i++) |
| 950 | if (line->chars[i].cc_next) |
| 951 | line->chars[i].cc_next += cols - oldcols; |
| 952 | if (line->cc_free) |
| 953 | line->cc_free += cols - oldcols; |
| 954 | |
| 955 | /* |
| 956 | * And finally fill in the new space with erase chars. (We |
| 957 | * don't have to worry about cc lists here, because we |
| 958 | * _know_ the erase char doesn't have one.) |
| 959 | */ |
| 960 | for (i = oldcols; i < cols; i++) |
| 961 | line->chars[i] = term->basic_erase_char; |
| 962 | |
| 963 | cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */ |
| 964 | } |
| 965 | } |
| 966 | |
| 967 | /* |
| 968 | * Get the number of lines in the scrollback. |
| 969 | */ |
| 970 | static int sblines(Terminal *term) |
| 971 | { |
| 972 | int sblines = count234(term->scrollback); |
| 973 | if (term->cfg.erase_to_scrollback && |
| 974 | term->alt_which && term->alt_screen) { |
| 975 | sblines += term->alt_sblines; |
| 976 | } |
| 977 | return sblines; |
| 978 | } |
| 979 | |
| 980 | /* |
| 981 | * Retrieve a line of the screen or of the scrollback, according to |
| 982 | * whether the y coordinate is non-negative or negative |
| 983 | * (respectively). |
| 984 | */ |
| 985 | static termline *lineptr(Terminal *term, int y, int lineno, int screen) |
| 986 | { |
| 987 | termline *line; |
| 988 | tree234 *whichtree; |
| 989 | int treeindex; |
| 990 | |
| 991 | if (y >= 0) { |
| 992 | whichtree = term->screen; |
| 993 | treeindex = y; |
| 994 | } else { |
| 995 | int altlines = 0; |
| 996 | |
| 997 | assert(!screen); |
| 998 | |
| 999 | if (term->cfg.erase_to_scrollback && |
| 1000 | term->alt_which && term->alt_screen) { |
| 1001 | altlines = term->alt_sblines; |
| 1002 | } |
| 1003 | if (y < -altlines) { |
| 1004 | whichtree = term->scrollback; |
| 1005 | treeindex = y + altlines + count234(term->scrollback); |
| 1006 | } else { |
| 1007 | whichtree = term->alt_screen; |
| 1008 | treeindex = y + term->alt_sblines; |
| 1009 | /* treeindex = y + count234(term->alt_screen); */ |
| 1010 | } |
| 1011 | } |
| 1012 | if (whichtree == term->scrollback) { |
| 1013 | unsigned char *cline = index234(whichtree, treeindex); |
| 1014 | line = decompressline(cline, NULL); |
| 1015 | } else { |
| 1016 | line = index234(whichtree, treeindex); |
| 1017 | } |
| 1018 | |
| 1019 | /* We assume that we don't screw up and retrieve something out of range. */ |
| 1020 | if (line == NULL) { |
| 1021 | fatalbox("line==NULL in terminal.c\n" |
| 1022 | "lineno=%d y=%d w=%d h=%d\n" |
| 1023 | "count(scrollback=%p)=%d\n" |
| 1024 | "count(screen=%p)=%d\n" |
| 1025 | "count(alt=%p)=%d alt_sblines=%d\n" |
| 1026 | "whichtree=%p treeindex=%d\n\n" |
| 1027 | "Please contact <putty@projects.tartarus.org> " |
| 1028 | "and pass on the above information.", |
| 1029 | lineno, y, term->cols, term->rows, |
| 1030 | term->scrollback, count234(term->scrollback), |
| 1031 | term->screen, count234(term->screen), |
| 1032 | term->alt_screen, count234(term->alt_screen), term->alt_sblines, |
| 1033 | whichtree, treeindex); |
| 1034 | } |
| 1035 | assert(line != NULL); |
| 1036 | |
| 1037 | resizeline(term, line, term->cols); |
| 1038 | /* FIXME: should we sort the compressed scrollback out here? */ |
| 1039 | |
| 1040 | return line; |
| 1041 | } |
| 1042 | |
| 1043 | #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE) |
| 1044 | #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE) |
| 1045 | |
| 1046 | static void term_schedule_tblink(Terminal *term); |
| 1047 | static void term_schedule_cblink(Terminal *term); |
| 1048 | |
| 1049 | static void term_timer(void *ctx, long now) |
| 1050 | { |
| 1051 | Terminal *term = (Terminal *)ctx; |
| 1052 | int update = FALSE; |
| 1053 | |
| 1054 | if (term->tblink_pending && now - term->next_tblink >= 0) { |
| 1055 | term->tblinker = !term->tblinker; |
| 1056 | term->tblink_pending = FALSE; |
| 1057 | term_schedule_tblink(term); |
| 1058 | update = TRUE; |
| 1059 | } |
| 1060 | |
| 1061 | if (term->cblink_pending && now - term->next_cblink >= 0) { |
| 1062 | term->cblinker = !term->cblinker; |
| 1063 | term->cblink_pending = FALSE; |
| 1064 | term_schedule_cblink(term); |
| 1065 | update = TRUE; |
| 1066 | } |
| 1067 | |
| 1068 | if (term->in_vbell && now - term->vbell_end >= 0) { |
| 1069 | term->in_vbell = FALSE; |
| 1070 | update = TRUE; |
| 1071 | } |
| 1072 | |
| 1073 | if (update || |
| 1074 | (term->window_update_pending && now - term->next_update >= 0)) |
| 1075 | term_update(term); |
| 1076 | } |
| 1077 | |
| 1078 | static void term_schedule_update(Terminal *term) |
| 1079 | { |
| 1080 | if (!term->window_update_pending) { |
| 1081 | term->window_update_pending = TRUE; |
| 1082 | term->next_update = schedule_timer(UPDATE_DELAY, term_timer, term); |
| 1083 | } |
| 1084 | } |
| 1085 | |
| 1086 | /* |
| 1087 | * Call this whenever the terminal window state changes, to queue |
| 1088 | * an update. |
| 1089 | */ |
| 1090 | static void seen_disp_event(Terminal *term) |
| 1091 | { |
| 1092 | term->seen_disp_event = TRUE; /* for scrollback-reset-on-activity */ |
| 1093 | term_schedule_update(term); |
| 1094 | } |
| 1095 | |
| 1096 | /* |
| 1097 | * Call when the terminal's blinking-text settings change, or when |
| 1098 | * a text blink has just occurred. |
| 1099 | */ |
| 1100 | static void term_schedule_tblink(Terminal *term) |
| 1101 | { |
| 1102 | if (term->blink_is_real) { |
| 1103 | if (!term->tblink_pending) |
| 1104 | term->next_tblink = schedule_timer(TBLINK_DELAY, term_timer, term); |
| 1105 | term->tblink_pending = TRUE; |
| 1106 | } else { |
| 1107 | term->tblinker = 1; /* reset when not in use */ |
| 1108 | term->tblink_pending = FALSE; |
| 1109 | } |
| 1110 | } |
| 1111 | |
| 1112 | /* |
| 1113 | * Likewise with cursor blinks. |
| 1114 | */ |
| 1115 | static void term_schedule_cblink(Terminal *term) |
| 1116 | { |
| 1117 | if (term->cfg.blink_cur && term->has_focus) { |
| 1118 | if (!term->cblink_pending) |
| 1119 | term->next_cblink = schedule_timer(CBLINK_DELAY, term_timer, term); |
| 1120 | term->cblink_pending = TRUE; |
| 1121 | } else { |
| 1122 | term->cblinker = 1; /* reset when not in use */ |
| 1123 | term->cblink_pending = FALSE; |
| 1124 | } |
| 1125 | } |
| 1126 | |
| 1127 | /* |
| 1128 | * Call to reset cursor blinking on new output. |
| 1129 | */ |
| 1130 | static void term_reset_cblink(Terminal *term) |
| 1131 | { |
| 1132 | seen_disp_event(term); |
| 1133 | term->cblinker = 1; |
| 1134 | term->cblink_pending = FALSE; |
| 1135 | term_schedule_cblink(term); |
| 1136 | } |
| 1137 | |
| 1138 | /* |
| 1139 | * Call to begin a visual bell. |
| 1140 | */ |
| 1141 | static void term_schedule_vbell(Terminal *term, int already_started, |
| 1142 | long startpoint) |
| 1143 | { |
| 1144 | long ticks_already_gone; |
| 1145 | |
| 1146 | if (already_started) |
| 1147 | ticks_already_gone = GETTICKCOUNT() - startpoint; |
| 1148 | else |
| 1149 | ticks_already_gone = 0; |
| 1150 | |
| 1151 | if (ticks_already_gone < VBELL_DELAY) { |
| 1152 | term->in_vbell = TRUE; |
| 1153 | term->vbell_end = schedule_timer(VBELL_DELAY - ticks_already_gone, |
| 1154 | term_timer, term); |
| 1155 | } else { |
| 1156 | term->in_vbell = FALSE; |
| 1157 | } |
| 1158 | } |
| 1159 | |
| 1160 | /* |
| 1161 | * Set up power-on settings for the terminal. |
| 1162 | */ |
| 1163 | static void power_on(Terminal *term) |
| 1164 | { |
| 1165 | term->curs.x = term->curs.y = 0; |
| 1166 | term->alt_x = term->alt_y = 0; |
| 1167 | term->savecurs.x = term->savecurs.y = 0; |
| 1168 | term->alt_t = term->marg_t = 0; |
| 1169 | if (term->rows != -1) |
| 1170 | term->alt_b = term->marg_b = term->rows - 1; |
| 1171 | else |
| 1172 | term->alt_b = term->marg_b = 0; |
| 1173 | if (term->cols != -1) { |
| 1174 | int i; |
| 1175 | for (i = 0; i < term->cols; i++) |
| 1176 | term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE); |
| 1177 | } |
| 1178 | term->alt_om = term->dec_om = term->cfg.dec_om; |
| 1179 | term->alt_ins = term->insert = FALSE; |
| 1180 | term->alt_wnext = term->wrapnext = term->save_wnext = FALSE; |
| 1181 | term->alt_wrap = term->wrap = term->cfg.wrap_mode; |
| 1182 | term->alt_cset = term->cset = term->save_cset = 0; |
| 1183 | term->alt_utf = term->utf = term->save_utf = 0; |
| 1184 | term->utf_state = 0; |
| 1185 | term->alt_sco_acs = term->sco_acs = term->save_sco_acs = 0; |
| 1186 | term->cset_attr[0] = term->cset_attr[1] = term->save_csattr = CSET_ASCII; |
| 1187 | term->rvideo = 0; |
| 1188 | term->in_vbell = FALSE; |
| 1189 | term->cursor_on = 1; |
| 1190 | term->big_cursor = 0; |
| 1191 | term->default_attr = term->save_attr = term->curr_attr = ATTR_DEFAULT; |
| 1192 | term->term_editing = term->term_echoing = FALSE; |
| 1193 | term->app_cursor_keys = term->cfg.app_cursor; |
| 1194 | term->app_keypad_keys = term->cfg.app_keypad; |
| 1195 | term->use_bce = term->cfg.bce; |
| 1196 | term->blink_is_real = term->cfg.blinktext; |
| 1197 | term->erase_char = term->basic_erase_char; |
| 1198 | term->alt_which = 0; |
| 1199 | term_print_finish(term); |
| 1200 | { |
| 1201 | int i; |
| 1202 | for (i = 0; i < 256; i++) |
| 1203 | term->wordness[i] = term->cfg.wordness[i]; |
| 1204 | } |
| 1205 | if (term->screen) { |
| 1206 | swap_screen(term, 1, FALSE, FALSE); |
| 1207 | erase_lots(term, FALSE, TRUE, TRUE); |
| 1208 | swap_screen(term, 0, FALSE, FALSE); |
| 1209 | erase_lots(term, FALSE, TRUE, TRUE); |
| 1210 | } |
| 1211 | term_schedule_tblink(term); |
| 1212 | term_schedule_cblink(term); |
| 1213 | } |
| 1214 | |
| 1215 | /* |
| 1216 | * Force a screen update. |
| 1217 | */ |
| 1218 | void term_update(Terminal *term) |
| 1219 | { |
| 1220 | Context ctx; |
| 1221 | |
| 1222 | term->window_update_pending = FALSE; |
| 1223 | |
| 1224 | ctx = get_ctx(term->frontend); |
| 1225 | if (ctx) { |
| 1226 | int need_sbar_update = term->seen_disp_event; |
| 1227 | if (term->seen_disp_event && term->cfg.scroll_on_disp) { |
| 1228 | term->disptop = 0; /* return to main screen */ |
| 1229 | term->seen_disp_event = 0; |
| 1230 | need_sbar_update = TRUE; |
| 1231 | } |
| 1232 | |
| 1233 | if (need_sbar_update) |
| 1234 | update_sbar(term); |
| 1235 | do_paint(term, ctx, TRUE); |
| 1236 | sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop); |
| 1237 | free_ctx(ctx); |
| 1238 | } |
| 1239 | } |
| 1240 | |
| 1241 | /* |
| 1242 | * Called from front end when a keypress occurs, to trigger |
| 1243 | * anything magical that needs to happen in that situation. |
| 1244 | */ |
| 1245 | void term_seen_key_event(Terminal *term) |
| 1246 | { |
| 1247 | /* |
| 1248 | * On any keypress, clear the bell overload mechanism |
| 1249 | * completely, on the grounds that large numbers of |
| 1250 | * beeps coming from deliberate key action are likely |
| 1251 | * to be intended (e.g. beeps from filename completion |
| 1252 | * blocking repeatedly). |
| 1253 | */ |
| 1254 | term->beep_overloaded = FALSE; |
| 1255 | while (term->beephead) { |
| 1256 | struct beeptime *tmp = term->beephead; |
| 1257 | term->beephead = tmp->next; |
| 1258 | sfree(tmp); |
| 1259 | } |
| 1260 | term->beeptail = NULL; |
| 1261 | term->nbeeps = 0; |
| 1262 | |
| 1263 | /* |
| 1264 | * Reset the scrollback on keypress, if we're doing that. |
| 1265 | */ |
| 1266 | if (term->cfg.scroll_on_key) { |
| 1267 | term->disptop = 0; /* return to main screen */ |
| 1268 | seen_disp_event(term); |
| 1269 | } |
| 1270 | } |
| 1271 | |
| 1272 | /* |
| 1273 | * Same as power_on(), but an external function. |
| 1274 | */ |
| 1275 | void term_pwron(Terminal *term) |
| 1276 | { |
| 1277 | power_on(term); |
| 1278 | if (term->ldisc) /* cause ldisc to notice changes */ |
| 1279 | ldisc_send(term->ldisc, NULL, 0, 0); |
| 1280 | term->disptop = 0; |
| 1281 | deselect(term); |
| 1282 | term_update(term); |
| 1283 | } |
| 1284 | |
| 1285 | static void set_erase_char(Terminal *term) |
| 1286 | { |
| 1287 | term->erase_char = term->basic_erase_char; |
| 1288 | if (term->use_bce) |
| 1289 | term->erase_char.attr = (term->curr_attr & |
| 1290 | (ATTR_FGMASK | ATTR_BGMASK)); |
| 1291 | } |
| 1292 | |
| 1293 | /* |
| 1294 | * When the user reconfigures us, we need to check the forbidden- |
| 1295 | * alternate-screen config option, disable raw mouse mode if the |
| 1296 | * user has disabled mouse reporting, and abandon a print job if |
| 1297 | * the user has disabled printing. |
| 1298 | */ |
| 1299 | void term_reconfig(Terminal *term, Config *cfg) |
| 1300 | { |
| 1301 | /* |
| 1302 | * Before adopting the new config, check all those terminal |
| 1303 | * settings which control power-on defaults; and if they've |
| 1304 | * changed, we will modify the current state as well as the |
| 1305 | * default one. The full list is: Auto wrap mode, DEC Origin |
| 1306 | * Mode, BCE, blinking text, character classes. |
| 1307 | */ |
| 1308 | int reset_wrap, reset_decom, reset_bce, reset_tblink, reset_charclass; |
| 1309 | int i; |
| 1310 | |
| 1311 | reset_wrap = (term->cfg.wrap_mode != cfg->wrap_mode); |
| 1312 | reset_decom = (term->cfg.dec_om != cfg->dec_om); |
| 1313 | reset_bce = (term->cfg.bce != cfg->bce); |
| 1314 | reset_tblink = (term->cfg.blinktext != cfg->blinktext); |
| 1315 | reset_charclass = 0; |
| 1316 | for (i = 0; i < lenof(term->cfg.wordness); i++) |
| 1317 | if (term->cfg.wordness[i] != cfg->wordness[i]) |
| 1318 | reset_charclass = 1; |
| 1319 | |
| 1320 | /* |
| 1321 | * If the bidi or shaping settings have changed, flush the bidi |
| 1322 | * cache completely. |
| 1323 | */ |
| 1324 | if (term->cfg.arabicshaping != cfg->arabicshaping || |
| 1325 | term->cfg.bidi != cfg->bidi) { |
| 1326 | for (i = 0; i < term->bidi_cache_size; i++) { |
| 1327 | sfree(term->pre_bidi_cache[i].chars); |
| 1328 | sfree(term->post_bidi_cache[i].chars); |
| 1329 | term->pre_bidi_cache[i].width = -1; |
| 1330 | term->pre_bidi_cache[i].chars = NULL; |
| 1331 | term->post_bidi_cache[i].width = -1; |
| 1332 | term->post_bidi_cache[i].chars = NULL; |
| 1333 | } |
| 1334 | } |
| 1335 | |
| 1336 | term->cfg = *cfg; /* STRUCTURE COPY */ |
| 1337 | |
| 1338 | if (reset_wrap) |
| 1339 | term->alt_wrap = term->wrap = term->cfg.wrap_mode; |
| 1340 | if (reset_decom) |
| 1341 | term->alt_om = term->dec_om = term->cfg.dec_om; |
| 1342 | if (reset_bce) { |
| 1343 | term->use_bce = term->cfg.bce; |
| 1344 | set_erase_char(term); |
| 1345 | } |
| 1346 | if (reset_tblink) { |
| 1347 | term->blink_is_real = term->cfg.blinktext; |
| 1348 | } |
| 1349 | if (reset_charclass) |
| 1350 | for (i = 0; i < 256; i++) |
| 1351 | term->wordness[i] = term->cfg.wordness[i]; |
| 1352 | |
| 1353 | if (term->cfg.no_alt_screen) |
| 1354 | swap_screen(term, 0, FALSE, FALSE); |
| 1355 | if (term->cfg.no_mouse_rep) { |
| 1356 | term->xterm_mouse = 0; |
| 1357 | set_raw_mouse_mode(term->frontend, 0); |
| 1358 | } |
| 1359 | if (term->cfg.no_remote_charset) { |
| 1360 | term->cset_attr[0] = term->cset_attr[1] = CSET_ASCII; |
| 1361 | term->sco_acs = term->alt_sco_acs = 0; |
| 1362 | term->utf = 0; |
| 1363 | } |
| 1364 | if (!*term->cfg.printer) { |
| 1365 | term_print_finish(term); |
| 1366 | } |
| 1367 | term_schedule_tblink(term); |
| 1368 | term_schedule_cblink(term); |
| 1369 | } |
| 1370 | |
| 1371 | /* |
| 1372 | * Clear the scrollback. |
| 1373 | */ |
| 1374 | void term_clrsb(Terminal *term) |
| 1375 | { |
| 1376 | termline *line; |
| 1377 | term->disptop = 0; |
| 1378 | while ((line = delpos234(term->scrollback, 0)) != NULL) { |
| 1379 | sfree(line); /* this is compressed data, not a termline */ |
| 1380 | } |
| 1381 | term->tempsblines = 0; |
| 1382 | term->alt_sblines = 0; |
| 1383 | update_sbar(term); |
| 1384 | } |
| 1385 | |
| 1386 | /* |
| 1387 | * Initialise the terminal. |
| 1388 | */ |
| 1389 | Terminal *term_init(Config *mycfg, struct unicode_data *ucsdata, |
| 1390 | void *frontend) |
| 1391 | { |
| 1392 | Terminal *term; |
| 1393 | |
| 1394 | /* |
| 1395 | * Allocate a new Terminal structure and initialise the fields |
| 1396 | * that need it. |
| 1397 | */ |
| 1398 | term = snew(Terminal); |
| 1399 | term->frontend = frontend; |
| 1400 | term->ucsdata = ucsdata; |
| 1401 | term->cfg = *mycfg; /* STRUCTURE COPY */ |
| 1402 | term->logctx = NULL; |
| 1403 | term->compatibility_level = TM_PUTTY; |
| 1404 | strcpy(term->id_string, "\033[?6c"); |
| 1405 | term->cblink_pending = term->tblink_pending = FALSE; |
| 1406 | term->paste_buffer = NULL; |
| 1407 | term->paste_len = 0; |
| 1408 | term->last_paste = 0; |
| 1409 | bufchain_init(&term->inbuf); |
| 1410 | bufchain_init(&term->printer_buf); |
| 1411 | term->printing = term->only_printing = FALSE; |
| 1412 | term->print_job = NULL; |
| 1413 | term->vt52_mode = FALSE; |
| 1414 | term->cr_lf_return = FALSE; |
| 1415 | term->seen_disp_event = FALSE; |
| 1416 | term->xterm_mouse = term->mouse_is_down = FALSE; |
| 1417 | term->reset_132 = FALSE; |
| 1418 | term->cblinker = term->tblinker = 0; |
| 1419 | term->has_focus = 1; |
| 1420 | term->repeat_off = FALSE; |
| 1421 | term->termstate = TOPLEVEL; |
| 1422 | term->selstate = NO_SELECTION; |
| 1423 | term->curstype = 0; |
| 1424 | |
| 1425 | term->screen = term->alt_screen = term->scrollback = NULL; |
| 1426 | term->tempsblines = 0; |
| 1427 | term->alt_sblines = 0; |
| 1428 | term->disptop = 0; |
| 1429 | term->disptext = NULL; |
| 1430 | term->dispcursx = term->dispcursy = -1; |
| 1431 | term->tabs = NULL; |
| 1432 | deselect(term); |
| 1433 | term->rows = term->cols = -1; |
| 1434 | power_on(term); |
| 1435 | term->beephead = term->beeptail = NULL; |
| 1436 | #ifdef OPTIMISE_SCROLL |
| 1437 | term->scrollhead = term->scrolltail = NULL; |
| 1438 | #endif /* OPTIMISE_SCROLL */ |
| 1439 | term->nbeeps = 0; |
| 1440 | term->lastbeep = FALSE; |
| 1441 | term->beep_overloaded = FALSE; |
| 1442 | term->attr_mask = 0xffffffff; |
| 1443 | term->resize_fn = NULL; |
| 1444 | term->resize_ctx = NULL; |
| 1445 | term->in_term_out = FALSE; |
| 1446 | term->ltemp = NULL; |
| 1447 | term->ltemp_size = 0; |
| 1448 | term->wcFrom = NULL; |
| 1449 | term->wcTo = NULL; |
| 1450 | term->wcFromTo_size = 0; |
| 1451 | |
| 1452 | term->window_update_pending = FALSE; |
| 1453 | |
| 1454 | term->bidi_cache_size = 0; |
| 1455 | term->pre_bidi_cache = term->post_bidi_cache = NULL; |
| 1456 | |
| 1457 | /* FULL-TERMCHAR */ |
| 1458 | term->basic_erase_char.chr = CSET_ASCII | ' '; |
| 1459 | term->basic_erase_char.attr = ATTR_DEFAULT; |
| 1460 | term->basic_erase_char.cc_next = 0; |
| 1461 | term->erase_char = term->basic_erase_char; |
| 1462 | |
| 1463 | return term; |
| 1464 | } |
| 1465 | |
| 1466 | void term_free(Terminal *term) |
| 1467 | { |
| 1468 | termline *line; |
| 1469 | struct beeptime *beep; |
| 1470 | int i; |
| 1471 | |
| 1472 | while ((line = delpos234(term->scrollback, 0)) != NULL) |
| 1473 | sfree(line); /* compressed data, not a termline */ |
| 1474 | freetree234(term->scrollback); |
| 1475 | while ((line = delpos234(term->screen, 0)) != NULL) |
| 1476 | freeline(line); |
| 1477 | freetree234(term->screen); |
| 1478 | while ((line = delpos234(term->alt_screen, 0)) != NULL) |
| 1479 | freeline(line); |
| 1480 | freetree234(term->alt_screen); |
| 1481 | if (term->disptext) { |
| 1482 | for (i = 0; i < term->rows; i++) |
| 1483 | freeline(term->disptext[i]); |
| 1484 | } |
| 1485 | sfree(term->disptext); |
| 1486 | while (term->beephead) { |
| 1487 | beep = term->beephead; |
| 1488 | term->beephead = beep->next; |
| 1489 | sfree(beep); |
| 1490 | } |
| 1491 | bufchain_clear(&term->inbuf); |
| 1492 | if(term->print_job) |
| 1493 | printer_finish_job(term->print_job); |
| 1494 | bufchain_clear(&term->printer_buf); |
| 1495 | sfree(term->paste_buffer); |
| 1496 | sfree(term->ltemp); |
| 1497 | sfree(term->wcFrom); |
| 1498 | sfree(term->wcTo); |
| 1499 | |
| 1500 | for (i = 0; i < term->bidi_cache_size; i++) { |
| 1501 | sfree(term->pre_bidi_cache[i].chars); |
| 1502 | sfree(term->post_bidi_cache[i].chars); |
| 1503 | } |
| 1504 | sfree(term->pre_bidi_cache); |
| 1505 | sfree(term->post_bidi_cache); |
| 1506 | |
| 1507 | expire_timer_context(term); |
| 1508 | |
| 1509 | sfree(term); |
| 1510 | } |
| 1511 | |
| 1512 | /* |
| 1513 | * Set up the terminal for a given size. |
| 1514 | */ |
| 1515 | void term_size(Terminal *term, int newrows, int newcols, int newsavelines) |
| 1516 | { |
| 1517 | tree234 *newalt; |
| 1518 | termline **newdisp, *line; |
| 1519 | int i, j, oldrows = term->rows; |
| 1520 | int sblen; |
| 1521 | int save_alt_which = term->alt_which; |
| 1522 | |
| 1523 | if (newrows == term->rows && newcols == term->cols && |
| 1524 | newsavelines == term->savelines) |
| 1525 | return; /* nothing to do */ |
| 1526 | |
| 1527 | deselect(term); |
| 1528 | swap_screen(term, 0, FALSE, FALSE); |
| 1529 | |
| 1530 | term->alt_t = term->marg_t = 0; |
| 1531 | term->alt_b = term->marg_b = newrows - 1; |
| 1532 | |
| 1533 | if (term->rows == -1) { |
| 1534 | term->scrollback = newtree234(NULL); |
| 1535 | term->screen = newtree234(NULL); |
| 1536 | term->tempsblines = 0; |
| 1537 | term->rows = 0; |
| 1538 | } |
| 1539 | |
| 1540 | /* |
| 1541 | * Resize the screen and scrollback. We only need to shift |
| 1542 | * lines around within our data structures, because lineptr() |
| 1543 | * will take care of resizing each individual line if |
| 1544 | * necessary. So: |
| 1545 | * |
| 1546 | * - If the new screen is longer, we shunt lines in from temporary |
| 1547 | * scrollback if possible, otherwise we add new blank lines at |
| 1548 | * the bottom. |
| 1549 | * |
| 1550 | * - If the new screen is shorter, we remove any blank lines at |
| 1551 | * the bottom if possible, otherwise shunt lines above the cursor |
| 1552 | * to scrollback if possible, otherwise delete lines below the |
| 1553 | * cursor. |
| 1554 | * |
| 1555 | * - Then, if the new scrollback length is less than the |
| 1556 | * amount of scrollback we actually have, we must throw some |
| 1557 | * away. |
| 1558 | */ |
| 1559 | sblen = count234(term->scrollback); |
| 1560 | /* Do this loop to expand the screen if newrows > rows */ |
| 1561 | assert(term->rows == count234(term->screen)); |
| 1562 | while (term->rows < newrows) { |
| 1563 | if (term->tempsblines > 0) { |
| 1564 | unsigned char *cline; |
| 1565 | /* Insert a line from the scrollback at the top of the screen. */ |
| 1566 | assert(sblen >= term->tempsblines); |
| 1567 | cline = delpos234(term->scrollback, --sblen); |
| 1568 | line = decompressline(cline, NULL); |
| 1569 | sfree(cline); |
| 1570 | line->temporary = FALSE; /* reconstituted line is now real */ |
| 1571 | term->tempsblines -= 1; |
| 1572 | addpos234(term->screen, line, 0); |
| 1573 | term->curs.y += 1; |
| 1574 | term->savecurs.y += 1; |
| 1575 | } else { |
| 1576 | /* Add a new blank line at the bottom of the screen. */ |
| 1577 | line = newline(term, newcols, FALSE); |
| 1578 | addpos234(term->screen, line, count234(term->screen)); |
| 1579 | } |
| 1580 | term->rows += 1; |
| 1581 | } |
| 1582 | /* Do this loop to shrink the screen if newrows < rows */ |
| 1583 | while (term->rows > newrows) { |
| 1584 | if (term->curs.y < term->rows - 1) { |
| 1585 | /* delete bottom row, unless it contains the cursor */ |
| 1586 | sfree(delpos234(term->screen, term->rows - 1)); |
| 1587 | } else { |
| 1588 | /* push top row to scrollback */ |
| 1589 | line = delpos234(term->screen, 0); |
| 1590 | addpos234(term->scrollback, compressline(line), sblen++); |
| 1591 | freeline(line); |
| 1592 | term->tempsblines += 1; |
| 1593 | term->curs.y -= 1; |
| 1594 | term->savecurs.y -= 1; |
| 1595 | } |
| 1596 | term->rows -= 1; |
| 1597 | } |
| 1598 | assert(term->rows == newrows); |
| 1599 | assert(count234(term->screen) == newrows); |
| 1600 | |
| 1601 | /* Delete any excess lines from the scrollback. */ |
| 1602 | while (sblen > newsavelines) { |
| 1603 | line = delpos234(term->scrollback, 0); |
| 1604 | sfree(line); |
| 1605 | sblen--; |
| 1606 | } |
| 1607 | if (sblen < term->tempsblines) |
| 1608 | term->tempsblines = sblen; |
| 1609 | assert(count234(term->scrollback) <= newsavelines); |
| 1610 | assert(count234(term->scrollback) >= term->tempsblines); |
| 1611 | term->disptop = 0; |
| 1612 | |
| 1613 | /* Make a new displayed text buffer. */ |
| 1614 | newdisp = snewn(newrows, termline *); |
| 1615 | for (i = 0; i < newrows; i++) { |
| 1616 | newdisp[i] = newline(term, newcols, FALSE); |
| 1617 | for (j = 0; j < newcols; j++) |
| 1618 | newdisp[i]->chars[j].attr = ATTR_INVALID; |
| 1619 | } |
| 1620 | if (term->disptext) { |
| 1621 | for (i = 0; i < oldrows; i++) |
| 1622 | freeline(term->disptext[i]); |
| 1623 | } |
| 1624 | sfree(term->disptext); |
| 1625 | term->disptext = newdisp; |
| 1626 | term->dispcursx = term->dispcursy = -1; |
| 1627 | |
| 1628 | /* Make a new alternate screen. */ |
| 1629 | newalt = newtree234(NULL); |
| 1630 | for (i = 0; i < newrows; i++) { |
| 1631 | line = newline(term, newcols, TRUE); |
| 1632 | addpos234(newalt, line, i); |
| 1633 | } |
| 1634 | if (term->alt_screen) { |
| 1635 | while (NULL != (line = delpos234(term->alt_screen, 0))) |
| 1636 | freeline(line); |
| 1637 | freetree234(term->alt_screen); |
| 1638 | } |
| 1639 | term->alt_screen = newalt; |
| 1640 | term->alt_sblines = 0; |
| 1641 | |
| 1642 | term->tabs = sresize(term->tabs, newcols, unsigned char); |
| 1643 | { |
| 1644 | int i; |
| 1645 | for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++) |
| 1646 | term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE); |
| 1647 | } |
| 1648 | |
| 1649 | /* Check that the cursor positions are still valid. */ |
| 1650 | if (term->savecurs.y < 0) |
| 1651 | term->savecurs.y = 0; |
| 1652 | if (term->savecurs.y >= newrows) |
| 1653 | term->savecurs.y = newrows - 1; |
| 1654 | if (term->curs.y < 0) |
| 1655 | term->curs.y = 0; |
| 1656 | if (term->curs.y >= newrows) |
| 1657 | term->curs.y = newrows - 1; |
| 1658 | if (term->curs.x >= newcols) |
| 1659 | term->curs.x = newcols - 1; |
| 1660 | term->alt_x = term->alt_y = 0; |
| 1661 | term->wrapnext = term->alt_wnext = FALSE; |
| 1662 | |
| 1663 | term->rows = newrows; |
| 1664 | term->cols = newcols; |
| 1665 | term->savelines = newsavelines; |
| 1666 | |
| 1667 | swap_screen(term, save_alt_which, FALSE, FALSE); |
| 1668 | |
| 1669 | update_sbar(term); |
| 1670 | term_update(term); |
| 1671 | if (term->resize_fn) |
| 1672 | term->resize_fn(term->resize_ctx, term->cols, term->rows); |
| 1673 | } |
| 1674 | |
| 1675 | /* |
| 1676 | * Hand a function and context pointer to the terminal which it can |
| 1677 | * use to notify a back end of resizes. |
| 1678 | */ |
| 1679 | void term_provide_resize_fn(Terminal *term, |
| 1680 | void (*resize_fn)(void *, int, int), |
| 1681 | void *resize_ctx) |
| 1682 | { |
| 1683 | term->resize_fn = resize_fn; |
| 1684 | term->resize_ctx = resize_ctx; |
| 1685 | if (term->cols > 0 && term->rows > 0) |
| 1686 | resize_fn(resize_ctx, term->cols, term->rows); |
| 1687 | } |
| 1688 | |
| 1689 | /* Find the bottom line on the screen that has any content. |
| 1690 | * If only the top line has content, returns 0. |
| 1691 | * If no lines have content, return -1. |
| 1692 | */ |
| 1693 | static int find_last_nonempty_line(Terminal * term, tree234 * screen) |
| 1694 | { |
| 1695 | int i; |
| 1696 | for (i = count234(screen) - 1; i >= 0; i--) { |
| 1697 | termline *line = index234(screen, i); |
| 1698 | int j; |
| 1699 | for (j = 0; j < line->cols; j++) |
| 1700 | if (!termchars_equal(&line->chars[j], &term->erase_char)) |
| 1701 | break; |
| 1702 | if (j != line->cols) break; |
| 1703 | } |
| 1704 | return i; |
| 1705 | } |
| 1706 | |
| 1707 | /* |
| 1708 | * Swap screens. If `reset' is TRUE and we have been asked to |
| 1709 | * switch to the alternate screen, we must bring most of its |
| 1710 | * configuration from the main screen and erase the contents of the |
| 1711 | * alternate screen completely. (This is even true if we're already |
| 1712 | * on it! Blame xterm.) |
| 1713 | */ |
| 1714 | static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos) |
| 1715 | { |
| 1716 | int t; |
| 1717 | tree234 *ttr; |
| 1718 | |
| 1719 | if (!which) |
| 1720 | reset = FALSE; /* do no weird resetting if which==0 */ |
| 1721 | |
| 1722 | if (which != term->alt_which) { |
| 1723 | term->alt_which = which; |
| 1724 | |
| 1725 | ttr = term->alt_screen; |
| 1726 | term->alt_screen = term->screen; |
| 1727 | term->screen = ttr; |
| 1728 | term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1; |
| 1729 | t = term->curs.x; |
| 1730 | if (!reset && !keep_cur_pos) |
| 1731 | term->curs.x = term->alt_x; |
| 1732 | term->alt_x = t; |
| 1733 | t = term->curs.y; |
| 1734 | if (!reset && !keep_cur_pos) |
| 1735 | term->curs.y = term->alt_y; |
| 1736 | term->alt_y = t; |
| 1737 | t = term->marg_t; |
| 1738 | if (!reset) term->marg_t = term->alt_t; |
| 1739 | term->alt_t = t; |
| 1740 | t = term->marg_b; |
| 1741 | if (!reset) term->marg_b = term->alt_b; |
| 1742 | term->alt_b = t; |
| 1743 | t = term->dec_om; |
| 1744 | if (!reset) term->dec_om = term->alt_om; |
| 1745 | term->alt_om = t; |
| 1746 | t = term->wrap; |
| 1747 | if (!reset) term->wrap = term->alt_wrap; |
| 1748 | term->alt_wrap = t; |
| 1749 | t = term->wrapnext; |
| 1750 | if (!reset) term->wrapnext = term->alt_wnext; |
| 1751 | term->alt_wnext = t; |
| 1752 | t = term->insert; |
| 1753 | if (!reset) term->insert = term->alt_ins; |
| 1754 | term->alt_ins = t; |
| 1755 | t = term->cset; |
| 1756 | if (!reset) term->cset = term->alt_cset; |
| 1757 | term->alt_cset = t; |
| 1758 | t = term->utf; |
| 1759 | if (!reset) term->utf = term->alt_utf; |
| 1760 | term->alt_utf = t; |
| 1761 | t = term->sco_acs; |
| 1762 | if (!reset) term->sco_acs = term->alt_sco_acs; |
| 1763 | term->alt_sco_acs = t; |
| 1764 | } |
| 1765 | |
| 1766 | if (reset && term->screen) { |
| 1767 | /* |
| 1768 | * Yes, this _is_ supposed to honour background-colour-erase. |
| 1769 | */ |
| 1770 | erase_lots(term, FALSE, TRUE, TRUE); |
| 1771 | } |
| 1772 | } |
| 1773 | |
| 1774 | /* |
| 1775 | * Update the scroll bar. |
| 1776 | */ |
| 1777 | static void update_sbar(Terminal *term) |
| 1778 | { |
| 1779 | int nscroll = sblines(term); |
| 1780 | set_sbar(term->frontend, nscroll + term->rows, |
| 1781 | nscroll + term->disptop, term->rows); |
| 1782 | } |
| 1783 | |
| 1784 | /* |
| 1785 | * Check whether the region bounded by the two pointers intersects |
| 1786 | * the scroll region, and de-select the on-screen selection if so. |
| 1787 | */ |
| 1788 | static void check_selection(Terminal *term, pos from, pos to) |
| 1789 | { |
| 1790 | if (poslt(from, term->selend) && poslt(term->selstart, to)) |
| 1791 | deselect(term); |
| 1792 | } |
| 1793 | |
| 1794 | /* |
| 1795 | * Scroll the screen. (`lines' is +ve for scrolling forward, -ve |
| 1796 | * for backward.) `sb' is TRUE if the scrolling is permitted to |
| 1797 | * affect the scrollback buffer. |
| 1798 | */ |
| 1799 | static void scroll(Terminal *term, int topline, int botline, int lines, int sb) |
| 1800 | { |
| 1801 | termline *line; |
| 1802 | int i, seltop, olddisptop, shift; |
| 1803 | |
| 1804 | if (topline != 0 || term->alt_which != 0) |
| 1805 | sb = FALSE; |
| 1806 | |
| 1807 | olddisptop = term->disptop; |
| 1808 | shift = lines; |
| 1809 | if (lines < 0) { |
| 1810 | while (lines < 0) { |
| 1811 | line = delpos234(term->screen, botline); |
| 1812 | resizeline(term, line, term->cols); |
| 1813 | for (i = 0; i < term->cols; i++) |
| 1814 | copy_termchar(line, i, &term->erase_char); |
| 1815 | line->lattr = LATTR_NORM; |
| 1816 | addpos234(term->screen, line, topline); |
| 1817 | |
| 1818 | if (term->selstart.y >= topline && term->selstart.y <= botline) { |
| 1819 | term->selstart.y++; |
| 1820 | if (term->selstart.y > botline) { |
| 1821 | term->selstart.y = botline + 1; |
| 1822 | term->selstart.x = 0; |
| 1823 | } |
| 1824 | } |
| 1825 | if (term->selend.y >= topline && term->selend.y <= botline) { |
| 1826 | term->selend.y++; |
| 1827 | if (term->selend.y > botline) { |
| 1828 | term->selend.y = botline + 1; |
| 1829 | term->selend.x = 0; |
| 1830 | } |
| 1831 | } |
| 1832 | |
| 1833 | lines++; |
| 1834 | } |
| 1835 | } else { |
| 1836 | while (lines > 0) { |
| 1837 | line = delpos234(term->screen, topline); |
| 1838 | cc_check(line); /* XXX-REMOVE-BEFORE-RELEASE */ |
| 1839 | if (sb && term->savelines > 0) { |
| 1840 | int sblen = count234(term->scrollback); |
| 1841 | /* |
| 1842 | * We must add this line to the scrollback. We'll |
| 1843 | * remove a line from the top of the scrollback if |
| 1844 | * the scrollback is full. |
| 1845 | */ |
| 1846 | if (sblen == term->savelines) { |
| 1847 | unsigned char *cline; |
| 1848 | |
| 1849 | sblen--; |
| 1850 | cline = delpos234(term->scrollback, 0); |
| 1851 | sfree(cline); |
| 1852 | } else |
| 1853 | term->tempsblines += 1; |
| 1854 | |
| 1855 | addpos234(term->scrollback, compressline(line), sblen); |
| 1856 | |
| 1857 | /* now `line' itself can be reused as the bottom line */ |
| 1858 | |
| 1859 | /* |
| 1860 | * If the user is currently looking at part of the |
| 1861 | * scrollback, and they haven't enabled any options |
| 1862 | * that are going to reset the scrollback as a |
| 1863 | * result of this movement, then the chances are |
| 1864 | * they'd like to keep looking at the same line. So |
| 1865 | * we move their viewpoint at the same rate as the |
| 1866 | * scroll, at least until their viewpoint hits the |
| 1867 | * top end of the scrollback buffer, at which point |
| 1868 | * we don't have the choice any more. |
| 1869 | * |
| 1870 | * Thanks to Jan Holmen Holsten for the idea and |
| 1871 | * initial implementation. |
| 1872 | */ |
| 1873 | if (term->disptop > -term->savelines && term->disptop < 0) |
| 1874 | term->disptop--; |
| 1875 | } |
| 1876 | resizeline(term, line, term->cols); |
| 1877 | for (i = 0; i < term->cols; i++) |
| 1878 | copy_termchar(line, i, &term->erase_char); |
| 1879 | line->lattr = LATTR_NORM; |
| 1880 | addpos234(term->screen, line, botline); |
| 1881 | |
| 1882 | /* |
| 1883 | * If the selection endpoints move into the scrollback, |
| 1884 | * we keep them moving until they hit the top. However, |
| 1885 | * of course, if the line _hasn't_ moved into the |
| 1886 | * scrollback then we don't do this, and cut them off |
| 1887 | * at the top of the scroll region. |
| 1888 | * |
| 1889 | * This applies to selstart and selend (for an existing |
| 1890 | * selection), and also selanchor (for one being |
| 1891 | * selected as we speak). |
| 1892 | */ |
| 1893 | seltop = sb ? -term->savelines : topline; |
| 1894 | |
| 1895 | if (term->selstate != NO_SELECTION) { |
| 1896 | if (term->selstart.y >= seltop && |
| 1897 | term->selstart.y <= botline) { |
| 1898 | term->selstart.y--; |
| 1899 | if (term->selstart.y < seltop) { |
| 1900 | term->selstart.y = seltop; |
| 1901 | term->selstart.x = 0; |
| 1902 | } |
| 1903 | } |
| 1904 | if (term->selend.y >= seltop && term->selend.y <= botline) { |
| 1905 | term->selend.y--; |
| 1906 | if (term->selend.y < seltop) { |
| 1907 | term->selend.y = seltop; |
| 1908 | term->selend.x = 0; |
| 1909 | } |
| 1910 | } |
| 1911 | if (term->selanchor.y >= seltop && |
| 1912 | term->selanchor.y <= botline) { |
| 1913 | term->selanchor.y--; |
| 1914 | if (term->selanchor.y < seltop) { |
| 1915 | term->selanchor.y = seltop; |
| 1916 | term->selanchor.x = 0; |
| 1917 | } |
| 1918 | } |
| 1919 | } |
| 1920 | |
| 1921 | lines--; |
| 1922 | } |
| 1923 | } |
| 1924 | #ifdef OPTIMISE_SCROLL |
| 1925 | shift += term->disptop - olddisptop; |
| 1926 | if (shift < term->rows && shift > -term->rows && shift != 0) |
| 1927 | scroll_display(term, topline, botline, shift); |
| 1928 | #endif /* OPTIMISE_SCROLL */ |
| 1929 | } |
| 1930 | |
| 1931 | #ifdef OPTIMISE_SCROLL |
| 1932 | /* |
| 1933 | * Add a scroll of a region on the screen into the pending scroll list. |
| 1934 | * `lines' is +ve for scrolling forward, -ve for backward. |
| 1935 | * |
| 1936 | * If the scroll is on the same area as the last scroll in the list, |
| 1937 | * merge them. |
| 1938 | */ |
| 1939 | static void save_scroll(Terminal *term, int topline, int botline, int lines) |
| 1940 | { |
| 1941 | struct scrollregion *newscroll; |
| 1942 | if (term->scrolltail && |
| 1943 | term->scrolltail->topline == topline && |
| 1944 | term->scrolltail->botline == botline) { |
| 1945 | term->scrolltail->lines += lines; |
| 1946 | } else { |
| 1947 | newscroll = snew(struct scrollregion); |
| 1948 | newscroll->topline = topline; |
| 1949 | newscroll->botline = botline; |
| 1950 | newscroll->lines = lines; |
| 1951 | newscroll->next = NULL; |
| 1952 | |
| 1953 | if (!term->scrollhead) |
| 1954 | term->scrollhead = newscroll; |
| 1955 | else |
| 1956 | term->scrolltail->next = newscroll; |
| 1957 | term->scrolltail = newscroll; |
| 1958 | } |
| 1959 | } |
| 1960 | |
| 1961 | /* |
| 1962 | * Scroll the physical display, and our conception of it in disptext. |
| 1963 | */ |
| 1964 | static void scroll_display(Terminal *term, int topline, int botline, int lines) |
| 1965 | { |
| 1966 | int distance, nlines, i, j; |
| 1967 | |
| 1968 | distance = lines > 0 ? lines : -lines; |
| 1969 | nlines = botline - topline + 1 - distance; |
| 1970 | if (lines > 0) { |
| 1971 | for (i = 0; i < nlines; i++) |
| 1972 | for (j = 0; j < term->cols; j++) |
| 1973 | copy_termchar(term->disptext[i], j, |
| 1974 | term->disptext[i+distance]->chars+j); |
| 1975 | if (term->dispcursy >= 0 && |
| 1976 | term->dispcursy >= topline + distance && |
| 1977 | term->dispcursy < topline + distance + nlines) |
| 1978 | term->dispcursy -= distance; |
| 1979 | for (i = 0; i < distance; i++) |
| 1980 | for (j = 0; j < term->cols; j++) |
| 1981 | term->disptext[nlines+i]->chars[j].attr |= ATTR_INVALID; |
| 1982 | } else { |
| 1983 | for (i = nlines; i-- ;) |
| 1984 | for (j = 0; j < term->cols; j++) |
| 1985 | copy_termchar(term->disptext[i+distance], j, |
| 1986 | term->disptext[i]->chars+j); |
| 1987 | if (term->dispcursy >= 0 && |
| 1988 | term->dispcursy >= topline && |
| 1989 | term->dispcursy < topline + nlines) |
| 1990 | term->dispcursy += distance; |
| 1991 | for (i = 0; i < distance; i++) |
| 1992 | for (j = 0; j < term->cols; j++) |
| 1993 | term->disptext[i]->chars[j].attr |= ATTR_INVALID; |
| 1994 | } |
| 1995 | save_scroll(term, topline, botline, lines); |
| 1996 | } |
| 1997 | #endif /* OPTIMISE_SCROLL */ |
| 1998 | |
| 1999 | /* |
| 2000 | * Move the cursor to a given position, clipping at boundaries. We |
| 2001 | * may or may not want to clip at the scroll margin: marg_clip is 0 |
| 2002 | * not to, 1 to disallow _passing_ the margins, and 2 to disallow |
| 2003 | * even _being_ outside the margins. |
| 2004 | */ |
| 2005 | static void move(Terminal *term, int x, int y, int marg_clip) |
| 2006 | { |
| 2007 | if (x < 0) |
| 2008 | x = 0; |
| 2009 | if (x >= term->cols) |
| 2010 | x = term->cols - 1; |
| 2011 | if (marg_clip) { |
| 2012 | if ((term->curs.y >= term->marg_t || marg_clip == 2) && |
| 2013 | y < term->marg_t) |
| 2014 | y = term->marg_t; |
| 2015 | if ((term->curs.y <= term->marg_b || marg_clip == 2) && |
| 2016 | y > term->marg_b) |
| 2017 | y = term->marg_b; |
| 2018 | } |
| 2019 | if (y < 0) |
| 2020 | y = 0; |
| 2021 | if (y >= term->rows) |
| 2022 | y = term->rows - 1; |
| 2023 | term->curs.x = x; |
| 2024 | term->curs.y = y; |
| 2025 | term->wrapnext = FALSE; |
| 2026 | } |
| 2027 | |
| 2028 | /* |
| 2029 | * Save or restore the cursor and SGR mode. |
| 2030 | */ |
| 2031 | static void save_cursor(Terminal *term, int save) |
| 2032 | { |
| 2033 | if (save) { |
| 2034 | term->savecurs = term->curs; |
| 2035 | term->save_attr = term->curr_attr; |
| 2036 | term->save_cset = term->cset; |
| 2037 | term->save_utf = term->utf; |
| 2038 | term->save_wnext = term->wrapnext; |
| 2039 | term->save_csattr = term->cset_attr[term->cset]; |
| 2040 | term->save_sco_acs = term->sco_acs; |
| 2041 | } else { |
| 2042 | term->curs = term->savecurs; |
| 2043 | /* Make sure the window hasn't shrunk since the save */ |
| 2044 | if (term->curs.x >= term->cols) |
| 2045 | term->curs.x = term->cols - 1; |
| 2046 | if (term->curs.y >= term->rows) |
| 2047 | term->curs.y = term->rows - 1; |
| 2048 | |
| 2049 | term->curr_attr = term->save_attr; |
| 2050 | term->cset = term->save_cset; |
| 2051 | term->utf = term->save_utf; |
| 2052 | term->wrapnext = term->save_wnext; |
| 2053 | /* |
| 2054 | * wrapnext might reset to False if the x position is no |
| 2055 | * longer at the rightmost edge. |
| 2056 | */ |
| 2057 | if (term->wrapnext && term->curs.x < term->cols-1) |
| 2058 | term->wrapnext = FALSE; |
| 2059 | term->cset_attr[term->cset] = term->save_csattr; |
| 2060 | term->sco_acs = term->save_sco_acs; |
| 2061 | set_erase_char(term); |
| 2062 | } |
| 2063 | } |
| 2064 | |
| 2065 | /* |
| 2066 | * This function is called before doing _anything_ which affects |
| 2067 | * only part of a line of text. It is used to mark the boundary |
| 2068 | * between two character positions, and it indicates that some sort |
| 2069 | * of effect is going to happen on only one side of that boundary. |
| 2070 | * |
| 2071 | * The effect of this function is to check whether a CJK |
| 2072 | * double-width character is straddling the boundary, and to remove |
| 2073 | * it and replace it with two spaces if so. (Of course, one or |
| 2074 | * other of those spaces is then likely to be replaced with |
| 2075 | * something else again, as a result of whatever happens next.) |
| 2076 | * |
| 2077 | * Also, if the boundary is at the right-hand _edge_ of the screen, |
| 2078 | * it implies something deliberate is being done to the rightmost |
| 2079 | * column position; hence we must clear LATTR_WRAPPED2. |
| 2080 | * |
| 2081 | * The input to the function is the coordinates of the _second_ |
| 2082 | * character of the pair. |
| 2083 | */ |
| 2084 | static void check_boundary(Terminal *term, int x, int y) |
| 2085 | { |
| 2086 | termline *ldata; |
| 2087 | |
| 2088 | /* Validate input coordinates, just in case. */ |
| 2089 | if (x == 0 || x > term->cols) |
| 2090 | return; |
| 2091 | |
| 2092 | ldata = scrlineptr(y); |
| 2093 | if (x == term->cols) { |
| 2094 | ldata->lattr &= ~LATTR_WRAPPED2; |
| 2095 | } else { |
| 2096 | if (ldata->chars[x].chr == UCSWIDE) { |
| 2097 | clear_cc(ldata, x-1); |
| 2098 | clear_cc(ldata, x); |
| 2099 | ldata->chars[x-1].chr = ' ' | CSET_ASCII; |
| 2100 | ldata->chars[x] = ldata->chars[x-1]; |
| 2101 | } |
| 2102 | } |
| 2103 | } |
| 2104 | |
| 2105 | /* |
| 2106 | * Erase a large portion of the screen: the whole screen, or the |
| 2107 | * whole line, or parts thereof. |
| 2108 | */ |
| 2109 | static void erase_lots(Terminal *term, |
| 2110 | int line_only, int from_begin, int to_end) |
| 2111 | { |
| 2112 | pos start, end; |
| 2113 | int erase_lattr; |
| 2114 | int erasing_lines_from_top = 0; |
| 2115 | |
| 2116 | if (line_only) { |
| 2117 | start.y = term->curs.y; |
| 2118 | start.x = 0; |
| 2119 | end.y = term->curs.y + 1; |
| 2120 | end.x = 0; |
| 2121 | erase_lattr = FALSE; |
| 2122 | } else { |
| 2123 | start.y = 0; |
| 2124 | start.x = 0; |
| 2125 | end.y = term->rows; |
| 2126 | end.x = 0; |
| 2127 | erase_lattr = TRUE; |
| 2128 | } |
| 2129 | if (!from_begin) { |
| 2130 | start = term->curs; |
| 2131 | } |
| 2132 | if (!to_end) { |
| 2133 | end = term->curs; |
| 2134 | incpos(end); |
| 2135 | } |
| 2136 | if (!from_begin || !to_end) |
| 2137 | check_boundary(term, term->curs.x, term->curs.y); |
| 2138 | check_selection(term, start, end); |
| 2139 | |
| 2140 | /* Clear screen also forces a full window redraw, just in case. */ |
| 2141 | if (start.y == 0 && start.x == 0 && end.y == term->rows) |
| 2142 | term_invalidate(term); |
| 2143 | |
| 2144 | /* Lines scrolled away shouldn't be brought back on if the terminal |
| 2145 | * resizes. */ |
| 2146 | if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr) |
| 2147 | erasing_lines_from_top = 1; |
| 2148 | |
| 2149 | if (term->cfg.erase_to_scrollback && erasing_lines_from_top) { |
| 2150 | /* If it's a whole number of lines, starting at the top, and |
| 2151 | * we're fully erasing them, erase by scrolling and keep the |
| 2152 | * lines in the scrollback. */ |
| 2153 | int scrolllines = end.y; |
| 2154 | if (end.y == term->rows) { |
| 2155 | /* Shrink until we find a non-empty row.*/ |
| 2156 | scrolllines = find_last_nonempty_line(term, term->screen) + 1; |
| 2157 | } |
| 2158 | if (scrolllines > 0) |
| 2159 | scroll(term, 0, scrolllines - 1, scrolllines, TRUE); |
| 2160 | } else { |
| 2161 | termline *ldata = scrlineptr(start.y); |
| 2162 | while (poslt(start, end)) { |
| 2163 | if (start.x == term->cols) { |
| 2164 | if (!erase_lattr) |
| 2165 | ldata->lattr &= ~(LATTR_WRAPPED | LATTR_WRAPPED2); |
| 2166 | else |
| 2167 | ldata->lattr = LATTR_NORM; |
| 2168 | } else { |
| 2169 | copy_termchar(ldata, start.x, &term->erase_char); |
| 2170 | } |
| 2171 | if (incpos(start) && start.y < term->rows) { |
| 2172 | ldata = scrlineptr(start.y); |
| 2173 | } |
| 2174 | } |
| 2175 | } |
| 2176 | |
| 2177 | /* After an erase of lines from the top of the screen, we shouldn't |
| 2178 | * bring the lines back again if the terminal enlarges (since the user or |
| 2179 | * application has explictly thrown them away). */ |
| 2180 | if (erasing_lines_from_top && !(term->alt_which)) |
| 2181 | term->tempsblines = 0; |
| 2182 | } |
| 2183 | |
| 2184 | /* |
| 2185 | * Insert or delete characters within the current line. n is +ve if |
| 2186 | * insertion is desired, and -ve for deletion. |
| 2187 | */ |
| 2188 | static void insch(Terminal *term, int n) |
| 2189 | { |
| 2190 | int dir = (n < 0 ? -1 : +1); |
| 2191 | int m, j; |
| 2192 | pos cursplus; |
| 2193 | termline *ldata; |
| 2194 | |
| 2195 | n = (n < 0 ? -n : n); |
| 2196 | if (n > term->cols - term->curs.x) |
| 2197 | n = term->cols - term->curs.x; |
| 2198 | m = term->cols - term->curs.x - n; |
| 2199 | cursplus.y = term->curs.y; |
| 2200 | cursplus.x = term->curs.x + n; |
| 2201 | check_selection(term, term->curs, cursplus); |
| 2202 | check_boundary(term, term->curs.x, term->curs.y); |
| 2203 | if (dir < 0) |
| 2204 | check_boundary(term, term->curs.x + n, term->curs.y); |
| 2205 | ldata = scrlineptr(term->curs.y); |
| 2206 | if (dir < 0) { |
| 2207 | for (j = 0; j < m; j++) |
| 2208 | move_termchar(ldata, |
| 2209 | ldata->chars + term->curs.x + j, |
| 2210 | ldata->chars + term->curs.x + j + n); |
| 2211 | while (n--) |
| 2212 | copy_termchar(ldata, term->curs.x + m++, &term->erase_char); |
| 2213 | } else { |
| 2214 | for (j = m; j-- ;) |
| 2215 | move_termchar(ldata, |
| 2216 | ldata->chars + term->curs.x + j + n, |
| 2217 | ldata->chars + term->curs.x + j); |
| 2218 | while (n--) |
| 2219 | copy_termchar(ldata, term->curs.x + n, &term->erase_char); |
| 2220 | } |
| 2221 | } |
| 2222 | |
| 2223 | /* |
| 2224 | * Toggle terminal mode `mode' to state `state'. (`query' indicates |
| 2225 | * whether the mode is a DEC private one or a normal one.) |
| 2226 | */ |
| 2227 | static void toggle_mode(Terminal *term, int mode, int query, int state) |
| 2228 | { |
| 2229 | if (query) |
| 2230 | switch (mode) { |
| 2231 | case 1: /* DECCKM: application cursor keys */ |
| 2232 | term->app_cursor_keys = state; |
| 2233 | break; |
| 2234 | case 2: /* DECANM: VT52 mode */ |
| 2235 | term->vt52_mode = !state; |
| 2236 | if (term->vt52_mode) { |
| 2237 | term->blink_is_real = FALSE; |
| 2238 | term->vt52_bold = FALSE; |
| 2239 | } else { |
| 2240 | term->blink_is_real = term->cfg.blinktext; |
| 2241 | } |
| 2242 | term_schedule_tblink(term); |
| 2243 | break; |
| 2244 | case 3: /* DECCOLM: 80/132 columns */ |
| 2245 | deselect(term); |
| 2246 | if (!term->cfg.no_remote_resize) |
| 2247 | request_resize(term->frontend, state ? 132 : 80, term->rows); |
| 2248 | term->reset_132 = state; |
| 2249 | term->alt_t = term->marg_t = 0; |
| 2250 | term->alt_b = term->marg_b = term->rows - 1; |
| 2251 | move(term, 0, 0, 0); |
| 2252 | erase_lots(term, FALSE, TRUE, TRUE); |
| 2253 | break; |
| 2254 | case 5: /* DECSCNM: reverse video */ |
| 2255 | /* |
| 2256 | * Toggle reverse video. If we receive an OFF within the |
| 2257 | * visual bell timeout period after an ON, we trigger an |
| 2258 | * effective visual bell, so that ESC[?5hESC[?5l will |
| 2259 | * always be an actually _visible_ visual bell. |
| 2260 | */ |
| 2261 | if (term->rvideo && !state) { |
| 2262 | /* This is an OFF, so set up a vbell */ |
| 2263 | term_schedule_vbell(term, TRUE, term->rvbell_startpoint); |
| 2264 | } else if (!term->rvideo && state) { |
| 2265 | /* This is an ON, so we notice the time and save it. */ |
| 2266 | term->rvbell_startpoint = GETTICKCOUNT(); |
| 2267 | } |
| 2268 | term->rvideo = state; |
| 2269 | seen_disp_event(term); |
| 2270 | break; |
| 2271 | case 6: /* DECOM: DEC origin mode */ |
| 2272 | term->dec_om = state; |
| 2273 | break; |
| 2274 | case 7: /* DECAWM: auto wrap */ |
| 2275 | term->wrap = state; |
| 2276 | break; |
| 2277 | case 8: /* DECARM: auto key repeat */ |
| 2278 | term->repeat_off = !state; |
| 2279 | break; |
| 2280 | case 10: /* DECEDM: set local edit mode */ |
| 2281 | term->term_editing = state; |
| 2282 | if (term->ldisc) /* cause ldisc to notice changes */ |
| 2283 | ldisc_send(term->ldisc, NULL, 0, 0); |
| 2284 | break; |
| 2285 | case 25: /* DECTCEM: enable/disable cursor */ |
| 2286 | compatibility2(OTHER, VT220); |
| 2287 | term->cursor_on = state; |
| 2288 | seen_disp_event(term); |
| 2289 | break; |
| 2290 | case 47: /* alternate screen */ |
| 2291 | compatibility(OTHER); |
| 2292 | deselect(term); |
| 2293 | swap_screen(term, term->cfg.no_alt_screen ? 0 : state, FALSE, FALSE); |
| 2294 | term->disptop = 0; |
| 2295 | break; |
| 2296 | case 1000: /* xterm mouse 1 */ |
| 2297 | term->xterm_mouse = state ? 1 : 0; |
| 2298 | set_raw_mouse_mode(term->frontend, state); |
| 2299 | break; |
| 2300 | case 1002: /* xterm mouse 2 */ |
| 2301 | term->xterm_mouse = state ? 2 : 0; |
| 2302 | set_raw_mouse_mode(term->frontend, state); |
| 2303 | break; |
| 2304 | case 1047: /* alternate screen */ |
| 2305 | compatibility(OTHER); |
| 2306 | deselect(term); |
| 2307 | swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, TRUE); |
| 2308 | term->disptop = 0; |
| 2309 | break; |
| 2310 | case 1048: /* save/restore cursor */ |
| 2311 | if (!term->cfg.no_alt_screen) |
| 2312 | save_cursor(term, state); |
| 2313 | if (!state) seen_disp_event(term); |
| 2314 | break; |
| 2315 | case 1049: /* cursor & alternate screen */ |
| 2316 | if (state && !term->cfg.no_alt_screen) |
| 2317 | save_cursor(term, state); |
| 2318 | if (!state) seen_disp_event(term); |
| 2319 | compatibility(OTHER); |
| 2320 | deselect(term); |
| 2321 | swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, FALSE); |
| 2322 | if (!state && !term->cfg.no_alt_screen) |
| 2323 | save_cursor(term, state); |
| 2324 | term->disptop = 0; |
| 2325 | break; |
| 2326 | } else |
| 2327 | switch (mode) { |
| 2328 | case 4: /* IRM: set insert mode */ |
| 2329 | compatibility(VT102); |
| 2330 | term->insert = state; |
| 2331 | break; |
| 2332 | case 12: /* SRM: set echo mode */ |
| 2333 | term->term_echoing = !state; |
| 2334 | if (term->ldisc) /* cause ldisc to notice changes */ |
| 2335 | ldisc_send(term->ldisc, NULL, 0, 0); |
| 2336 | break; |
| 2337 | case 20: /* LNM: Return sends ... */ |
| 2338 | term->cr_lf_return = state; |
| 2339 | break; |
| 2340 | case 34: /* WYULCURM: Make cursor BIG */ |
| 2341 | compatibility2(OTHER, VT220); |
| 2342 | term->big_cursor = !state; |
| 2343 | } |
| 2344 | } |
| 2345 | |
| 2346 | /* |
| 2347 | * Process an OSC sequence: set window title or icon name. |
| 2348 | */ |
| 2349 | static void do_osc(Terminal *term) |
| 2350 | { |
| 2351 | if (term->osc_w) { |
| 2352 | while (term->osc_strlen--) |
| 2353 | term->wordness[(unsigned char) |
| 2354 | term->osc_string[term->osc_strlen]] = term->esc_args[0]; |
| 2355 | } else { |
| 2356 | term->osc_string[term->osc_strlen] = '\0'; |
| 2357 | switch (term->esc_args[0]) { |
| 2358 | case 0: |
| 2359 | case 1: |
| 2360 | if (!term->cfg.no_remote_wintitle) |
| 2361 | set_icon(term->frontend, term->osc_string); |
| 2362 | if (term->esc_args[0] == 1) |
| 2363 | break; |
| 2364 | /* fall through: parameter 0 means set both */ |
| 2365 | case 2: |
| 2366 | case 21: |
| 2367 | if (!term->cfg.no_remote_wintitle) |
| 2368 | set_title(term->frontend, term->osc_string); |
| 2369 | break; |
| 2370 | } |
| 2371 | } |
| 2372 | } |
| 2373 | |
| 2374 | /* |
| 2375 | * ANSI printing routines. |
| 2376 | */ |
| 2377 | static void term_print_setup(Terminal *term) |
| 2378 | { |
| 2379 | bufchain_clear(&term->printer_buf); |
| 2380 | term->print_job = printer_start_job(term->cfg.printer); |
| 2381 | } |
| 2382 | static void term_print_flush(Terminal *term) |
| 2383 | { |
| 2384 | void *data; |
| 2385 | int len; |
| 2386 | int size; |
| 2387 | while ((size = bufchain_size(&term->printer_buf)) > 5) { |
| 2388 | bufchain_prefix(&term->printer_buf, &data, &len); |
| 2389 | if (len > size-5) |
| 2390 | len = size-5; |
| 2391 | printer_job_data(term->print_job, data, len); |
| 2392 | bufchain_consume(&term->printer_buf, len); |
| 2393 | } |
| 2394 | } |
| 2395 | static void term_print_finish(Terminal *term) |
| 2396 | { |
| 2397 | void *data; |
| 2398 | int len, size; |
| 2399 | char c; |
| 2400 | |
| 2401 | if (!term->printing && !term->only_printing) |
| 2402 | return; /* we need do nothing */ |
| 2403 | |
| 2404 | term_print_flush(term); |
| 2405 | while ((size = bufchain_size(&term->printer_buf)) > 0) { |
| 2406 | bufchain_prefix(&term->printer_buf, &data, &len); |
| 2407 | c = *(char *)data; |
| 2408 | if (c == '\033' || c == '\233') { |
| 2409 | bufchain_consume(&term->printer_buf, size); |
| 2410 | break; |
| 2411 | } else { |
| 2412 | printer_job_data(term->print_job, &c, 1); |
| 2413 | bufchain_consume(&term->printer_buf, 1); |
| 2414 | } |
| 2415 | } |
| 2416 | printer_finish_job(term->print_job); |
| 2417 | term->print_job = NULL; |
| 2418 | term->printing = term->only_printing = FALSE; |
| 2419 | } |
| 2420 | |
| 2421 | /* |
| 2422 | * Remove everything currently in `inbuf' and stick it up on the |
| 2423 | * in-memory display. There's a big state machine in here to |
| 2424 | * process escape sequences... |
| 2425 | */ |
| 2426 | static void term_out(Terminal *term) |
| 2427 | { |
| 2428 | unsigned long c; |
| 2429 | int unget; |
| 2430 | unsigned char localbuf[256], *chars; |
| 2431 | int nchars = 0; |
| 2432 | |
| 2433 | unget = -1; |
| 2434 | |
| 2435 | chars = NULL; /* placate compiler warnings */ |
| 2436 | while (nchars > 0 || bufchain_size(&term->inbuf) > 0) { |
| 2437 | if (unget == -1) { |
| 2438 | if (nchars == 0) { |
| 2439 | void *ret; |
| 2440 | bufchain_prefix(&term->inbuf, &ret, &nchars); |
| 2441 | if (nchars > sizeof(localbuf)) |
| 2442 | nchars = sizeof(localbuf); |
| 2443 | memcpy(localbuf, ret, nchars); |
| 2444 | bufchain_consume(&term->inbuf, nchars); |
| 2445 | chars = localbuf; |
| 2446 | assert(chars != NULL); |
| 2447 | } |
| 2448 | c = *chars++; |
| 2449 | nchars--; |
| 2450 | |
| 2451 | /* |
| 2452 | * Optionally log the session traffic to a file. Useful for |
| 2453 | * debugging and possibly also useful for actual logging. |
| 2454 | */ |
| 2455 | if (term->cfg.logtype == LGTYP_DEBUG && term->logctx) |
| 2456 | logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG); |
| 2457 | } else { |
| 2458 | c = unget; |
| 2459 | unget = -1; |
| 2460 | } |
| 2461 | |
| 2462 | /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even |
| 2463 | * be able to display 8-bit characters, but I'll let that go 'cause |
| 2464 | * of i18n. |
| 2465 | */ |
| 2466 | |
| 2467 | /* |
| 2468 | * If we're printing, add the character to the printer |
| 2469 | * buffer. |
| 2470 | */ |
| 2471 | if (term->printing) { |
| 2472 | bufchain_add(&term->printer_buf, &c, 1); |
| 2473 | |
| 2474 | /* |
| 2475 | * If we're in print-only mode, we use a much simpler |
| 2476 | * state machine designed only to recognise the ESC[4i |
| 2477 | * termination sequence. |
| 2478 | */ |
| 2479 | if (term->only_printing) { |
| 2480 | if (c == '\033') |
| 2481 | term->print_state = 1; |
| 2482 | else if (c == (unsigned char)'\233') |
| 2483 | term->print_state = 2; |
| 2484 | else if (c == '[' && term->print_state == 1) |
| 2485 | term->print_state = 2; |
| 2486 | else if (c == '4' && term->print_state == 2) |
| 2487 | term->print_state = 3; |
| 2488 | else if (c == 'i' && term->print_state == 3) |
| 2489 | term->print_state = 4; |
| 2490 | else |
| 2491 | term->print_state = 0; |
| 2492 | if (term->print_state == 4) { |
| 2493 | term_print_finish(term); |
| 2494 | } |
| 2495 | continue; |
| 2496 | } |
| 2497 | } |
| 2498 | |
| 2499 | /* First see about all those translations. */ |
| 2500 | if (term->termstate == TOPLEVEL) { |
| 2501 | if (in_utf(term)) |
| 2502 | switch (term->utf_state) { |
| 2503 | case 0: |
| 2504 | if (c < 0x80) { |
| 2505 | /* UTF-8 must be stateless so we ignore iso2022. */ |
| 2506 | if (term->ucsdata->unitab_ctrl[c] != 0xFF) |
| 2507 | c = term->ucsdata->unitab_ctrl[c]; |
| 2508 | else c = ((unsigned char)c) | CSET_ASCII; |
| 2509 | break; |
| 2510 | } else if ((c & 0xe0) == 0xc0) { |
| 2511 | term->utf_size = term->utf_state = 1; |
| 2512 | term->utf_char = (c & 0x1f); |
| 2513 | } else if ((c & 0xf0) == 0xe0) { |
| 2514 | term->utf_size = term->utf_state = 2; |
| 2515 | term->utf_char = (c & 0x0f); |
| 2516 | } else if ((c & 0xf8) == 0xf0) { |
| 2517 | term->utf_size = term->utf_state = 3; |
| 2518 | term->utf_char = (c & 0x07); |
| 2519 | } else if ((c & 0xfc) == 0xf8) { |
| 2520 | term->utf_size = term->utf_state = 4; |
| 2521 | term->utf_char = (c & 0x03); |
| 2522 | } else if ((c & 0xfe) == 0xfc) { |
| 2523 | term->utf_size = term->utf_state = 5; |
| 2524 | term->utf_char = (c & 0x01); |
| 2525 | } else { |
| 2526 | c = UCSERR; |
| 2527 | break; |
| 2528 | } |
| 2529 | continue; |
| 2530 | case 1: |
| 2531 | case 2: |
| 2532 | case 3: |
| 2533 | case 4: |
| 2534 | case 5: |
| 2535 | if ((c & 0xC0) != 0x80) { |
| 2536 | unget = c; |
| 2537 | c = UCSERR; |
| 2538 | term->utf_state = 0; |
| 2539 | break; |
| 2540 | } |
| 2541 | term->utf_char = (term->utf_char << 6) | (c & 0x3f); |
| 2542 | if (--term->utf_state) |
| 2543 | continue; |
| 2544 | |
| 2545 | c = term->utf_char; |
| 2546 | |
| 2547 | /* Is somebody trying to be evil! */ |
| 2548 | if (c < 0x80 || |
| 2549 | (c < 0x800 && term->utf_size >= 2) || |
| 2550 | (c < 0x10000 && term->utf_size >= 3) || |
| 2551 | (c < 0x200000 && term->utf_size >= 4) || |
| 2552 | (c < 0x4000000 && term->utf_size >= 5)) |
| 2553 | c = UCSERR; |
| 2554 | |
| 2555 | /* Unicode line separator and paragraph separator are CR-LF */ |
| 2556 | if (c == 0x2028 || c == 0x2029) |
| 2557 | c = 0x85; |
| 2558 | |
| 2559 | /* High controls are probably a Baaad idea too. */ |
| 2560 | if (c < 0xA0) |
| 2561 | c = 0xFFFD; |
| 2562 | |
| 2563 | /* The UTF-16 surrogates are not nice either. */ |
| 2564 | /* The standard give the option of decoding these: |
| 2565 | * I don't want to! */ |
| 2566 | if (c >= 0xD800 && c < 0xE000) |
| 2567 | c = UCSERR; |
| 2568 | |
| 2569 | /* ISO 10646 characters now limited to UTF-16 range. */ |
| 2570 | if (c > 0x10FFFF) |
| 2571 | c = UCSERR; |
| 2572 | |
| 2573 | /* This is currently a TagPhobic application.. */ |
| 2574 | if (c >= 0xE0000 && c <= 0xE007F) |
| 2575 | continue; |
| 2576 | |
| 2577 | /* U+FEFF is best seen as a null. */ |
| 2578 | if (c == 0xFEFF) |
| 2579 | continue; |
| 2580 | /* But U+FFFE is an error. */ |
| 2581 | if (c == 0xFFFE || c == 0xFFFF) |
| 2582 | c = UCSERR; |
| 2583 | |
| 2584 | break; |
| 2585 | } |
| 2586 | /* Are we in the nasty ACS mode? Note: no sco in utf mode. */ |
| 2587 | else if(term->sco_acs && |
| 2588 | (c!='\033' && c!='\012' && c!='\015' && c!='\b')) |
| 2589 | { |
| 2590 | if (term->sco_acs == 2) c |= 0x80; |
| 2591 | c |= CSET_SCOACS; |
| 2592 | } else { |
| 2593 | switch (term->cset_attr[term->cset]) { |
| 2594 | /* |
| 2595 | * Linedraw characters are different from 'ESC ( B' |
| 2596 | * only for a small range. For ones outside that |
| 2597 | * range, make sure we use the same font as well as |
| 2598 | * the same encoding. |
| 2599 | */ |
| 2600 | case CSET_LINEDRW: |
| 2601 | if (term->ucsdata->unitab_ctrl[c] != 0xFF) |
| 2602 | c = term->ucsdata->unitab_ctrl[c]; |
| 2603 | else |
| 2604 | c = ((unsigned char) c) | CSET_LINEDRW; |
| 2605 | break; |
| 2606 | |
| 2607 | case CSET_GBCHR: |
| 2608 | /* If UK-ASCII, make the '#' a LineDraw Pound */ |
| 2609 | if (c == '#') { |
| 2610 | c = '}' | CSET_LINEDRW; |
| 2611 | break; |
| 2612 | } |
| 2613 | /*FALLTHROUGH*/ case CSET_ASCII: |
| 2614 | if (term->ucsdata->unitab_ctrl[c] != 0xFF) |
| 2615 | c = term->ucsdata->unitab_ctrl[c]; |
| 2616 | else |
| 2617 | c = ((unsigned char) c) | CSET_ASCII; |
| 2618 | break; |
| 2619 | case CSET_SCOACS: |
| 2620 | if (c>=' ') c = ((unsigned char)c) | CSET_SCOACS; |
| 2621 | break; |
| 2622 | } |
| 2623 | } |
| 2624 | } |
| 2625 | |
| 2626 | /* |
| 2627 | * How about C1 controls? |
| 2628 | * Explicitly ignore SCI (0x9a), which we don't translate to DECID. |
| 2629 | */ |
| 2630 | if ((c & -32) == 0x80 && term->termstate < DO_CTRLS && |
| 2631 | !term->vt52_mode && has_compat(VT220)) { |
| 2632 | if (c == 0x9a) |
| 2633 | c = 0; |
| 2634 | else { |
| 2635 | term->termstate = SEEN_ESC; |
| 2636 | term->esc_query = FALSE; |
| 2637 | c = '@' + (c & 0x1F); |
| 2638 | } |
| 2639 | } |
| 2640 | |
| 2641 | /* Or the GL control. */ |
| 2642 | if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) { |
| 2643 | if (term->curs.x && !term->wrapnext) |
| 2644 | term->curs.x--; |
| 2645 | term->wrapnext = FALSE; |
| 2646 | /* destructive backspace might be disabled */ |
| 2647 | if (!term->cfg.no_dbackspace) { |
| 2648 | check_boundary(term, term->curs.x, term->curs.y); |
| 2649 | check_boundary(term, term->curs.x+1, term->curs.y); |
| 2650 | copy_termchar(scrlineptr(term->curs.y), |
| 2651 | term->curs.x, &term->erase_char); |
| 2652 | } |
| 2653 | } else |
| 2654 | /* Or normal C0 controls. */ |
| 2655 | if ((c & ~0x1F) == 0 && term->termstate < DO_CTRLS) { |
| 2656 | switch (c) { |
| 2657 | case '\005': /* ENQ: terminal type query */ |
| 2658 | /* |
| 2659 | * Strictly speaking this is VT100 but a VT100 defaults to |
| 2660 | * no response. Other terminals respond at their option. |
| 2661 | * |
| 2662 | * Don't put a CR in the default string as this tends to |
| 2663 | * upset some weird software. |
| 2664 | */ |
| 2665 | compatibility(ANSIMIN); |
| 2666 | if (term->ldisc) { |
| 2667 | char abuf[256], *s, *d; |
| 2668 | int state = 0; |
| 2669 | for (s = term->cfg.answerback, d = abuf; *s; s++) { |
| 2670 | if (state) { |
| 2671 | if (*s >= 'a' && *s <= 'z') |
| 2672 | *d++ = (*s - ('a' - 1)); |
| 2673 | else if ((*s >= '@' && *s <= '_') || |
| 2674 | *s == '?' || (*s & 0x80)) |
| 2675 | *d++ = ('@' ^ *s); |
| 2676 | else if (*s == '~') |
| 2677 | *d++ = '^'; |
| 2678 | state = 0; |
| 2679 | } else if (*s == '^') { |
| 2680 | state = 1; |
| 2681 | } else |
| 2682 | *d++ = *s; |
| 2683 | } |
| 2684 | lpage_send(term->ldisc, DEFAULT_CODEPAGE, |
| 2685 | abuf, d - abuf, 0); |
| 2686 | } |
| 2687 | break; |
| 2688 | case '\007': /* BEL: Bell */ |
| 2689 | { |
| 2690 | struct beeptime *newbeep; |
| 2691 | unsigned long ticks; |
| 2692 | |
| 2693 | ticks = GETTICKCOUNT(); |
| 2694 | |
| 2695 | if (!term->beep_overloaded) { |
| 2696 | newbeep = snew(struct beeptime); |
| 2697 | newbeep->ticks = ticks; |
| 2698 | newbeep->next = NULL; |
| 2699 | if (!term->beephead) |
| 2700 | term->beephead = newbeep; |
| 2701 | else |
| 2702 | term->beeptail->next = newbeep; |
| 2703 | term->beeptail = newbeep; |
| 2704 | term->nbeeps++; |
| 2705 | } |
| 2706 | |
| 2707 | /* |
| 2708 | * Throw out any beeps that happened more than |
| 2709 | * t seconds ago. |
| 2710 | */ |
| 2711 | while (term->beephead && |
| 2712 | term->beephead->ticks < ticks - term->cfg.bellovl_t) { |
| 2713 | struct beeptime *tmp = term->beephead; |
| 2714 | term->beephead = tmp->next; |
| 2715 | sfree(tmp); |
| 2716 | if (!term->beephead) |
| 2717 | term->beeptail = NULL; |
| 2718 | term->nbeeps--; |
| 2719 | } |
| 2720 | |
| 2721 | if (term->cfg.bellovl && term->beep_overloaded && |
| 2722 | ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) { |
| 2723 | /* |
| 2724 | * If we're currently overloaded and the |
| 2725 | * last beep was more than s seconds ago, |
| 2726 | * leave overload mode. |
| 2727 | */ |
| 2728 | term->beep_overloaded = FALSE; |
| 2729 | } else if (term->cfg.bellovl && !term->beep_overloaded && |
| 2730 | term->nbeeps >= term->cfg.bellovl_n) { |
| 2731 | /* |
| 2732 | * Now, if we have n or more beeps |
| 2733 | * remaining in the queue, go into overload |
| 2734 | * mode. |
| 2735 | */ |
| 2736 | term->beep_overloaded = TRUE; |
| 2737 | } |
| 2738 | term->lastbeep = ticks; |
| 2739 | |
| 2740 | /* |
| 2741 | * Perform an actual beep if we're not overloaded. |
| 2742 | */ |
| 2743 | if (!term->cfg.bellovl || !term->beep_overloaded) { |
| 2744 | beep(term->frontend, term->cfg.beep); |
| 2745 | |
| 2746 | if (term->cfg.beep == BELL_VISUAL) { |
| 2747 | term_schedule_vbell(term, FALSE, 0); |
| 2748 | } |
| 2749 | } |
| 2750 | seen_disp_event(term); |
| 2751 | } |
| 2752 | break; |
| 2753 | case '\b': /* BS: Back space */ |
| 2754 | if (term->curs.x == 0 && |
| 2755 | (term->curs.y == 0 || term->wrap == 0)) |
| 2756 | /* do nothing */ ; |
| 2757 | else if (term->curs.x == 0 && term->curs.y > 0) |
| 2758 | term->curs.x = term->cols - 1, term->curs.y--; |
| 2759 | else if (term->wrapnext) |
| 2760 | term->wrapnext = FALSE; |
| 2761 | else |
| 2762 | term->curs.x--; |
| 2763 | seen_disp_event(term); |
| 2764 | break; |
| 2765 | case '\016': /* LS1: Locking-shift one */ |
| 2766 | compatibility(VT100); |
| 2767 | term->cset = 1; |
| 2768 | break; |
| 2769 | case '\017': /* LS0: Locking-shift zero */ |
| 2770 | compatibility(VT100); |
| 2771 | term->cset = 0; |
| 2772 | break; |
| 2773 | case '\033': /* ESC: Escape */ |
| 2774 | if (term->vt52_mode) |
| 2775 | term->termstate = VT52_ESC; |
| 2776 | else { |
| 2777 | compatibility(ANSIMIN); |
| 2778 | term->termstate = SEEN_ESC; |
| 2779 | term->esc_query = FALSE; |
| 2780 | } |
| 2781 | break; |
| 2782 | case '\015': /* CR: Carriage return */ |
| 2783 | term->curs.x = 0; |
| 2784 | term->wrapnext = FALSE; |
| 2785 | seen_disp_event(term); |
| 2786 | term->paste_hold = 0; |
| 2787 | if (term->logctx) |
| 2788 | logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII); |
| 2789 | break; |
| 2790 | case '\014': /* FF: Form feed */ |
| 2791 | if (has_compat(SCOANSI)) { |
| 2792 | move(term, 0, 0, 0); |
| 2793 | erase_lots(term, FALSE, FALSE, TRUE); |
| 2794 | term->disptop = 0; |
| 2795 | term->wrapnext = FALSE; |
| 2796 | seen_disp_event(term); |
| 2797 | break; |
| 2798 | } |
| 2799 | case '\013': /* VT: Line tabulation */ |
| 2800 | compatibility(VT100); |
| 2801 | case '\012': /* LF: Line feed */ |
| 2802 | if (term->curs.y == term->marg_b) |
| 2803 | scroll(term, term->marg_t, term->marg_b, 1, TRUE); |
| 2804 | else if (term->curs.y < term->rows - 1) |
| 2805 | term->curs.y++; |
| 2806 | if (term->cfg.lfhascr) |
| 2807 | term->curs.x = 0; |
| 2808 | term->wrapnext = FALSE; |
| 2809 | seen_disp_event(term); |
| 2810 | term->paste_hold = 0; |
| 2811 | if (term->logctx) |
| 2812 | logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII); |
| 2813 | break; |
| 2814 | case '\t': /* HT: Character tabulation */ |
| 2815 | { |
| 2816 | pos old_curs = term->curs; |
| 2817 | termline *ldata = scrlineptr(term->curs.y); |
| 2818 | |
| 2819 | do { |
| 2820 | term->curs.x++; |
| 2821 | } while (term->curs.x < term->cols - 1 && |
| 2822 | !term->tabs[term->curs.x]); |
| 2823 | |
| 2824 | if ((ldata->lattr & LATTR_MODE) != LATTR_NORM) { |
| 2825 | if (term->curs.x >= term->cols / 2) |
| 2826 | term->curs.x = term->cols / 2 - 1; |
| 2827 | } else { |
| 2828 | if (term->curs.x >= term->cols) |
| 2829 | term->curs.x = term->cols - 1; |
| 2830 | } |
| 2831 | |
| 2832 | check_selection(term, old_curs, term->curs); |
| 2833 | } |
| 2834 | seen_disp_event(term); |
| 2835 | break; |
| 2836 | } |
| 2837 | } else |
| 2838 | switch (term->termstate) { |
| 2839 | case TOPLEVEL: |
| 2840 | /* Only graphic characters get this far; |
| 2841 | * ctrls are stripped above */ |
| 2842 | { |
| 2843 | termline *cline = scrlineptr(term->curs.y); |
| 2844 | int width = 0; |
| 2845 | if (DIRECT_CHAR(c)) |
| 2846 | width = 1; |
| 2847 | if (!width) |
| 2848 | width = (term->cfg.cjk_ambig_wide ? |
| 2849 | mk_wcwidth_cjk((wchar_t) c) : |
| 2850 | mk_wcwidth((wchar_t) c)); |
| 2851 | |
| 2852 | if (term->wrapnext && term->wrap && width > 0) { |
| 2853 | cline->lattr |= LATTR_WRAPPED; |
| 2854 | if (term->curs.y == term->marg_b) |
| 2855 | scroll(term, term->marg_t, term->marg_b, 1, TRUE); |
| 2856 | else if (term->curs.y < term->rows - 1) |
| 2857 | term->curs.y++; |
| 2858 | term->curs.x = 0; |
| 2859 | term->wrapnext = FALSE; |
| 2860 | cline = scrlineptr(term->curs.y); |
| 2861 | } |
| 2862 | if (term->insert && width > 0) |
| 2863 | insch(term, width); |
| 2864 | if (term->selstate != NO_SELECTION) { |
| 2865 | pos cursplus = term->curs; |
| 2866 | incpos(cursplus); |
| 2867 | check_selection(term, term->curs, cursplus); |
| 2868 | } |
| 2869 | if (((c & CSET_MASK) == CSET_ASCII || |
| 2870 | (c & CSET_MASK) == 0) && |
| 2871 | term->logctx) |
| 2872 | logtraffic(term->logctx, (unsigned char) c, |
| 2873 | LGTYP_ASCII); |
| 2874 | |
| 2875 | switch (width) { |
| 2876 | case 2: |
| 2877 | /* |
| 2878 | * If we're about to display a double-width |
| 2879 | * character starting in the rightmost |
| 2880 | * column, then we do something special |
| 2881 | * instead. We must print a space in the |
| 2882 | * last column of the screen, then wrap; |
| 2883 | * and we also set LATTR_WRAPPED2 which |
| 2884 | * instructs subsequent cut-and-pasting not |
| 2885 | * only to splice this line to the one |
| 2886 | * after it, but to ignore the space in the |
| 2887 | * last character position as well. |
| 2888 | * (Because what was actually output to the |
| 2889 | * terminal was presumably just a sequence |
| 2890 | * of CJK characters, and we don't want a |
| 2891 | * space to be pasted in the middle of |
| 2892 | * those just because they had the |
| 2893 | * misfortune to start in the wrong parity |
| 2894 | * column. xterm concurs.) |
| 2895 | */ |
| 2896 | check_boundary(term, term->curs.x, term->curs.y); |
| 2897 | check_boundary(term, term->curs.x+2, term->curs.y); |
| 2898 | if (term->curs.x == term->cols-1) { |
| 2899 | copy_termchar(cline, term->curs.x, |
| 2900 | &term->erase_char); |
| 2901 | cline->lattr |= LATTR_WRAPPED | LATTR_WRAPPED2; |
| 2902 | if (term->curs.y == term->marg_b) |
| 2903 | scroll(term, term->marg_t, term->marg_b, |
| 2904 | 1, TRUE); |
| 2905 | else if (term->curs.y < term->rows - 1) |
| 2906 | term->curs.y++; |
| 2907 | term->curs.x = 0; |
| 2908 | cline = scrlineptr(term->curs.y); |
| 2909 | /* Now we must check_boundary again, of course. */ |
| 2910 | check_boundary(term, term->curs.x, term->curs.y); |
| 2911 | check_boundary(term, term->curs.x+2, term->curs.y); |
| 2912 | } |
| 2913 | |
| 2914 | /* FULL-TERMCHAR */ |
| 2915 | clear_cc(cline, term->curs.x); |
| 2916 | cline->chars[term->curs.x].chr = c; |
| 2917 | cline->chars[term->curs.x].attr = term->curr_attr; |
| 2918 | |
| 2919 | term->curs.x++; |
| 2920 | |
| 2921 | /* FULL-TERMCHAR */ |
| 2922 | clear_cc(cline, term->curs.x); |
| 2923 | cline->chars[term->curs.x].chr = UCSWIDE; |
| 2924 | cline->chars[term->curs.x].attr = term->curr_attr; |
| 2925 | |
| 2926 | break; |
| 2927 | case 1: |
| 2928 | check_boundary(term, term->curs.x, term->curs.y); |
| 2929 | check_boundary(term, term->curs.x+1, term->curs.y); |
| 2930 | |
| 2931 | /* FULL-TERMCHAR */ |
| 2932 | clear_cc(cline, term->curs.x); |
| 2933 | cline->chars[term->curs.x].chr = c; |
| 2934 | cline->chars[term->curs.x].attr = term->curr_attr; |
| 2935 | |
| 2936 | break; |
| 2937 | case 0: |
| 2938 | if (term->curs.x > 0) { |
| 2939 | int x = term->curs.x - 1; |
| 2940 | |
| 2941 | /* If we're in wrapnext state, the character |
| 2942 | * to combine with is _here_, not to our left. */ |
| 2943 | if (term->wrapnext) |
| 2944 | x++; |
| 2945 | |
| 2946 | /* |
| 2947 | * If the previous character is |
| 2948 | * UCSWIDE, back up another one. |
| 2949 | */ |
| 2950 | if (cline->chars[x].chr == UCSWIDE) { |
| 2951 | assert(x > 0); |
| 2952 | x--; |
| 2953 | } |
| 2954 | |
| 2955 | add_cc(cline, x, c); |
| 2956 | seen_disp_event(term); |
| 2957 | } |
| 2958 | continue; |
| 2959 | default: |
| 2960 | continue; |
| 2961 | } |
| 2962 | term->curs.x++; |
| 2963 | if (term->curs.x == term->cols) { |
| 2964 | term->curs.x--; |
| 2965 | term->wrapnext = TRUE; |
| 2966 | if (term->wrap && term->vt52_mode) { |
| 2967 | cline->lattr |= LATTR_WRAPPED; |
| 2968 | if (term->curs.y == term->marg_b) |
| 2969 | scroll(term, term->marg_t, term->marg_b, 1, TRUE); |
| 2970 | else if (term->curs.y < term->rows - 1) |
| 2971 | term->curs.y++; |
| 2972 | term->curs.x = 0; |
| 2973 | term->wrapnext = FALSE; |
| 2974 | } |
| 2975 | } |
| 2976 | seen_disp_event(term); |
| 2977 | } |
| 2978 | break; |
| 2979 | |
| 2980 | case OSC_MAYBE_ST: |
| 2981 | /* |
| 2982 | * This state is virtually identical to SEEN_ESC, with the |
| 2983 | * exception that we have an OSC sequence in the pipeline, |
| 2984 | * and _if_ we see a backslash, we process it. |
| 2985 | */ |
| 2986 | if (c == '\\') { |
| 2987 | do_osc(term); |
| 2988 | term->termstate = TOPLEVEL; |
| 2989 | break; |
| 2990 | } |
| 2991 | /* else fall through */ |
| 2992 | case SEEN_ESC: |
| 2993 | if (c >= ' ' && c <= '/') { |
| 2994 | if (term->esc_query) |
| 2995 | term->esc_query = -1; |
| 2996 | else |
| 2997 | term->esc_query = c; |
| 2998 | break; |
| 2999 | } |
| 3000 | term->termstate = TOPLEVEL; |
| 3001 | switch (ANSI(c, term->esc_query)) { |
| 3002 | case '[': /* enter CSI mode */ |
| 3003 | term->termstate = SEEN_CSI; |
| 3004 | term->esc_nargs = 1; |
| 3005 | term->esc_args[0] = ARG_DEFAULT; |
| 3006 | term->esc_query = FALSE; |
| 3007 | break; |
| 3008 | case ']': /* OSC: xterm escape sequences */ |
| 3009 | /* Compatibility is nasty here, xterm, linux, decterm yuk! */ |
| 3010 | compatibility(OTHER); |
| 3011 | term->termstate = SEEN_OSC; |
| 3012 | term->esc_args[0] = 0; |
| 3013 | break; |
| 3014 | case '7': /* DECSC: save cursor */ |
| 3015 | compatibility(VT100); |
| 3016 | save_cursor(term, TRUE); |
| 3017 | break; |
| 3018 | case '8': /* DECRC: restore cursor */ |
| 3019 | compatibility(VT100); |
| 3020 | save_cursor(term, FALSE); |
| 3021 | seen_disp_event(term); |
| 3022 | break; |
| 3023 | case '=': /* DECKPAM: Keypad application mode */ |
| 3024 | compatibility(VT100); |
| 3025 | term->app_keypad_keys = TRUE; |
| 3026 | break; |
| 3027 | case '>': /* DECKPNM: Keypad numeric mode */ |
| 3028 | compatibility(VT100); |
| 3029 | term->app_keypad_keys = FALSE; |
| 3030 | break; |
| 3031 | case 'D': /* IND: exactly equivalent to LF */ |
| 3032 | compatibility(VT100); |
| 3033 | if (term->curs.y == term->marg_b) |
| 3034 | scroll(term, term->marg_t, term->marg_b, 1, TRUE); |
| 3035 | else if (term->curs.y < term->rows - 1) |
| 3036 | term->curs.y++; |
| 3037 | term->wrapnext = FALSE; |
| 3038 | seen_disp_event(term); |
| 3039 | break; |
| 3040 | case 'E': /* NEL: exactly equivalent to CR-LF */ |
| 3041 | compatibility(VT100); |
| 3042 | term->curs.x = 0; |
| 3043 | if (term->curs.y == term->marg_b) |
| 3044 | scroll(term, term->marg_t, term->marg_b, 1, TRUE); |
| 3045 | else if (term->curs.y < term->rows - 1) |
| 3046 | term->curs.y++; |
| 3047 | term->wrapnext = FALSE; |
| 3048 | seen_disp_event(term); |
| 3049 | break; |
| 3050 | case 'M': /* RI: reverse index - backwards LF */ |
| 3051 | compatibility(VT100); |
| 3052 | if (term->curs.y == term->marg_t) |
| 3053 | scroll(term, term->marg_t, term->marg_b, -1, TRUE); |
| 3054 | else if (term->curs.y > 0) |
| 3055 | term->curs.y--; |
| 3056 | term->wrapnext = FALSE; |
| 3057 | seen_disp_event(term); |
| 3058 | break; |
| 3059 | case 'Z': /* DECID: terminal type query */ |
| 3060 | compatibility(VT100); |
| 3061 | if (term->ldisc) |
| 3062 | ldisc_send(term->ldisc, term->id_string, |
| 3063 | strlen(term->id_string), 0); |
| 3064 | break; |
| 3065 | case 'c': /* RIS: restore power-on settings */ |
| 3066 | compatibility(VT100); |
| 3067 | power_on(term); |
| 3068 | if (term->ldisc) /* cause ldisc to notice changes */ |
| 3069 | ldisc_send(term->ldisc, NULL, 0, 0); |
| 3070 | if (term->reset_132) { |
| 3071 | if (!term->cfg.no_remote_resize) |
| 3072 | request_resize(term->frontend, 80, term->rows); |
| 3073 | term->reset_132 = 0; |
| 3074 | } |
| 3075 | term->disptop = 0; |
| 3076 | seen_disp_event(term); |
| 3077 | break; |
| 3078 | case 'H': /* HTS: set a tab */ |
| 3079 | compatibility(VT100); |
| 3080 | term->tabs[term->curs.x] = TRUE; |
| 3081 | break; |
| 3082 | |
| 3083 | case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */ |
| 3084 | compatibility(VT100); |
| 3085 | { |
| 3086 | termline *ldata; |
| 3087 | int i, j; |
| 3088 | pos scrtop, scrbot; |
| 3089 | |
| 3090 | for (i = 0; i < term->rows; i++) { |
| 3091 | ldata = scrlineptr(i); |
| 3092 | for (j = 0; j < term->cols; j++) { |
| 3093 | copy_termchar(ldata, j, |
| 3094 | &term->basic_erase_char); |
| 3095 | ldata->chars[j].chr = 'E'; |
| 3096 | } |
| 3097 | ldata->lattr = LATTR_NORM; |
| 3098 | } |
| 3099 | term->disptop = 0; |
| 3100 | seen_disp_event(term); |
| 3101 | scrtop.x = scrtop.y = 0; |
| 3102 | scrbot.x = 0; |
| 3103 | scrbot.y = term->rows; |
| 3104 | check_selection(term, scrtop, scrbot); |
| 3105 | } |
| 3106 | break; |
| 3107 | |
| 3108 | case ANSI('3', '#'): |
| 3109 | case ANSI('4', '#'): |
| 3110 | case ANSI('5', '#'): |
| 3111 | case ANSI('6', '#'): |
| 3112 | compatibility(VT100); |
| 3113 | { |
| 3114 | int nlattr; |
| 3115 | |
| 3116 | switch (ANSI(c, term->esc_query)) { |
| 3117 | case ANSI('3', '#'): /* DECDHL: 2*height, top */ |
| 3118 | nlattr = LATTR_TOP; |
| 3119 | break; |
| 3120 | case ANSI('4', '#'): /* DECDHL: 2*height, bottom */ |
| 3121 | nlattr = LATTR_BOT; |
| 3122 | break; |
| 3123 | case ANSI('5', '#'): /* DECSWL: normal */ |
| 3124 | nlattr = LATTR_NORM; |
| 3125 | break; |
| 3126 | default: /* case ANSI('6', '#'): DECDWL: 2*width */ |
| 3127 | nlattr = LATTR_WIDE; |
| 3128 | break; |
| 3129 | } |
| 3130 | scrlineptr(term->curs.y)->lattr = nlattr; |
| 3131 | } |
| 3132 | break; |
| 3133 | /* GZD4: G0 designate 94-set */ |
| 3134 | case ANSI('A', '('): |
| 3135 | compatibility(VT100); |
| 3136 | if (!term->cfg.no_remote_charset) |
| 3137 | term->cset_attr[0] = CSET_GBCHR; |
| 3138 | break; |
| 3139 | case ANSI('B', '('): |
| 3140 | compatibility(VT100); |
| 3141 | if (!term->cfg.no_remote_charset) |
| 3142 | term->cset_attr[0] = CSET_ASCII; |
| 3143 | break; |
| 3144 | case ANSI('0', '('): |
| 3145 | compatibility(VT100); |
| 3146 | if (!term->cfg.no_remote_charset) |
| 3147 | term->cset_attr[0] = CSET_LINEDRW; |
| 3148 | break; |
| 3149 | case ANSI('U', '('): |
| 3150 | compatibility(OTHER); |
| 3151 | if (!term->cfg.no_remote_charset) |
| 3152 | term->cset_attr[0] = CSET_SCOACS; |
| 3153 | break; |
| 3154 | /* G1D4: G1-designate 94-set */ |
| 3155 | case ANSI('A', ')'): |
| 3156 | compatibility(VT100); |
| 3157 | if (!term->cfg.no_remote_charset) |
| 3158 | term->cset_attr[1] = CSET_GBCHR; |
| 3159 | break; |
| 3160 | case ANSI('B', ')'): |
| 3161 | compatibility(VT100); |
| 3162 | if (!term->cfg.no_remote_charset) |
| 3163 | term->cset_attr[1] = CSET_ASCII; |
| 3164 | break; |
| 3165 | case ANSI('0', ')'): |
| 3166 | compatibility(VT100); |
| 3167 | if (!term->cfg.no_remote_charset) |
| 3168 | term->cset_attr[1] = CSET_LINEDRW; |
| 3169 | break; |
| 3170 | case ANSI('U', ')'): |
| 3171 | compatibility(OTHER); |
| 3172 | if (!term->cfg.no_remote_charset) |
| 3173 | term->cset_attr[1] = CSET_SCOACS; |
| 3174 | break; |
| 3175 | /* DOCS: Designate other coding system */ |
| 3176 | case ANSI('8', '%'): /* Old Linux code */ |
| 3177 | case ANSI('G', '%'): |
| 3178 | compatibility(OTHER); |
| 3179 | if (!term->cfg.no_remote_charset) |
| 3180 | term->utf = 1; |
| 3181 | break; |
| 3182 | case ANSI('@', '%'): |
| 3183 | compatibility(OTHER); |
| 3184 | if (!term->cfg.no_remote_charset) |
| 3185 | term->utf = 0; |
| 3186 | break; |
| 3187 | } |
| 3188 | break; |
| 3189 | case SEEN_CSI: |
| 3190 | term->termstate = TOPLEVEL; /* default */ |
| 3191 | if (isdigit(c)) { |
| 3192 | if (term->esc_nargs <= ARGS_MAX) { |
| 3193 | if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT) |
| 3194 | term->esc_args[term->esc_nargs - 1] = 0; |
| 3195 | term->esc_args[term->esc_nargs - 1] = |
| 3196 | 10 * term->esc_args[term->esc_nargs - 1] + c - '0'; |
| 3197 | } |
| 3198 | term->termstate = SEEN_CSI; |
| 3199 | } else if (c == ';') { |
| 3200 | if (++term->esc_nargs <= ARGS_MAX) |
| 3201 | term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT; |
| 3202 | term->termstate = SEEN_CSI; |
| 3203 | } else if (c < '@') { |
| 3204 | if (term->esc_query) |
| 3205 | term->esc_query = -1; |
| 3206 | else if (c == '?') |
| 3207 | term->esc_query = TRUE; |
| 3208 | else |
| 3209 | term->esc_query = c; |
| 3210 | term->termstate = SEEN_CSI; |
| 3211 | } else |
| 3212 | switch (ANSI(c, term->esc_query)) { |
| 3213 | case 'A': /* CUU: move up N lines */ |
| 3214 | move(term, term->curs.x, |
| 3215 | term->curs.y - def(term->esc_args[0], 1), 1); |
| 3216 | seen_disp_event(term); |
| 3217 | break; |
| 3218 | case 'e': /* VPR: move down N lines */ |
| 3219 | compatibility(ANSI); |
| 3220 | /* FALLTHROUGH */ |
| 3221 | case 'B': /* CUD: Cursor down */ |
| 3222 | move(term, term->curs.x, |
| 3223 | term->curs.y + def(term->esc_args[0], 1), 1); |
| 3224 | seen_disp_event(term); |
| 3225 | break; |
| 3226 | case ANSI('c', '>'): /* DA: report xterm version */ |
| 3227 | compatibility(OTHER); |
| 3228 | /* this reports xterm version 136 so that VIM can |
| 3229 | use the drag messages from the mouse reporting */ |
| 3230 | if (term->ldisc) |
| 3231 | ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0); |
| 3232 | break; |
| 3233 | case 'a': /* HPR: move right N cols */ |
| 3234 | compatibility(ANSI); |
| 3235 | /* FALLTHROUGH */ |
| 3236 | case 'C': /* CUF: Cursor right */ |
| 3237 | move(term, term->curs.x + def(term->esc_args[0], 1), |
| 3238 | term->curs.y, 1); |
| 3239 | seen_disp_event(term); |
| 3240 | break; |
| 3241 | case 'D': /* CUB: move left N cols */ |
| 3242 | move(term, term->curs.x - def(term->esc_args[0], 1), |
| 3243 | term->curs.y, 1); |
| 3244 | seen_disp_event(term); |
| 3245 | break; |
| 3246 | case 'E': /* CNL: move down N lines and CR */ |
| 3247 | compatibility(ANSI); |
| 3248 | move(term, 0, |
| 3249 | term->curs.y + def(term->esc_args[0], 1), 1); |
| 3250 | seen_disp_event(term); |
| 3251 | break; |
| 3252 | case 'F': /* CPL: move up N lines and CR */ |
| 3253 | compatibility(ANSI); |
| 3254 | move(term, 0, |
| 3255 | term->curs.y - def(term->esc_args[0], 1), 1); |
| 3256 | seen_disp_event(term); |
| 3257 | break; |
| 3258 | case 'G': /* CHA */ |
| 3259 | case '`': /* HPA: set horizontal posn */ |
| 3260 | compatibility(ANSI); |
| 3261 | move(term, def(term->esc_args[0], 1) - 1, |
| 3262 | term->curs.y, 0); |
| 3263 | seen_disp_event(term); |
| 3264 | break; |
| 3265 | case 'd': /* VPA: set vertical posn */ |
| 3266 | compatibility(ANSI); |
| 3267 | move(term, term->curs.x, |
| 3268 | ((term->dec_om ? term->marg_t : 0) + |
| 3269 | def(term->esc_args[0], 1) - 1), |
| 3270 | (term->dec_om ? 2 : 0)); |
| 3271 | seen_disp_event(term); |
| 3272 | break; |
| 3273 | case 'H': /* CUP */ |
| 3274 | case 'f': /* HVP: set horz and vert posns at once */ |
| 3275 | if (term->esc_nargs < 2) |
| 3276 | term->esc_args[1] = ARG_DEFAULT; |
| 3277 | move(term, def(term->esc_args[1], 1) - 1, |
| 3278 | ((term->dec_om ? term->marg_t : 0) + |
| 3279 | def(term->esc_args[0], 1) - 1), |
| 3280 | (term->dec_om ? 2 : 0)); |
| 3281 | seen_disp_event(term); |
| 3282 | break; |
| 3283 | case 'J': /* ED: erase screen or parts of it */ |
| 3284 | { |
| 3285 | unsigned int i = def(term->esc_args[0], 0) + 1; |
| 3286 | if (i > 3) |
| 3287 | i = 0; |
| 3288 | erase_lots(term, FALSE, !!(i & 2), !!(i & 1)); |
| 3289 | } |
| 3290 | term->disptop = 0; |
| 3291 | seen_disp_event(term); |
| 3292 | break; |
| 3293 | case 'K': /* EL: erase line or parts of it */ |
| 3294 | { |
| 3295 | unsigned int i = def(term->esc_args[0], 0) + 1; |
| 3296 | if (i > 3) |
| 3297 | i = 0; |
| 3298 | erase_lots(term, TRUE, !!(i & 2), !!(i & 1)); |
| 3299 | } |
| 3300 | seen_disp_event(term); |
| 3301 | break; |
| 3302 | case 'L': /* IL: insert lines */ |
| 3303 | compatibility(VT102); |
| 3304 | if (term->curs.y <= term->marg_b) |
| 3305 | scroll(term, term->curs.y, term->marg_b, |
| 3306 | -def(term->esc_args[0], 1), FALSE); |
| 3307 | seen_disp_event(term); |
| 3308 | break; |
| 3309 | case 'M': /* DL: delete lines */ |
| 3310 | compatibility(VT102); |
| 3311 | if (term->curs.y <= term->marg_b) |
| 3312 | scroll(term, term->curs.y, term->marg_b, |
| 3313 | def(term->esc_args[0], 1), |
| 3314 | TRUE); |
| 3315 | seen_disp_event(term); |
| 3316 | break; |
| 3317 | case '@': /* ICH: insert chars */ |
| 3318 | /* XXX VTTEST says this is vt220, vt510 manual says vt102 */ |
| 3319 | compatibility(VT102); |
| 3320 | insch(term, def(term->esc_args[0], 1)); |
| 3321 | seen_disp_event(term); |
| 3322 | break; |
| 3323 | case 'P': /* DCH: delete chars */ |
| 3324 | compatibility(VT102); |
| 3325 | insch(term, -def(term->esc_args[0], 1)); |
| 3326 | seen_disp_event(term); |
| 3327 | break; |
| 3328 | case 'c': /* DA: terminal type query */ |
| 3329 | compatibility(VT100); |
| 3330 | /* This is the response for a VT102 */ |
| 3331 | if (term->ldisc) |
| 3332 | ldisc_send(term->ldisc, term->id_string, |
| 3333 | strlen(term->id_string), 0); |
| 3334 | break; |
| 3335 | case 'n': /* DSR: cursor position query */ |
| 3336 | if (term->ldisc) { |
| 3337 | if (term->esc_args[0] == 6) { |
| 3338 | char buf[32]; |
| 3339 | sprintf(buf, "\033[%d;%dR", term->curs.y + 1, |
| 3340 | term->curs.x + 1); |
| 3341 | ldisc_send(term->ldisc, buf, strlen(buf), 0); |
| 3342 | } else if (term->esc_args[0] == 5) { |
| 3343 | ldisc_send(term->ldisc, "\033[0n", 4, 0); |
| 3344 | } |
| 3345 | } |
| 3346 | break; |
| 3347 | case 'h': /* SM: toggle modes to high */ |
| 3348 | case ANSI_QUE('h'): |
| 3349 | compatibility(VT100); |
| 3350 | { |
| 3351 | int i; |
| 3352 | for (i = 0; i < term->esc_nargs; i++) |
| 3353 | toggle_mode(term, term->esc_args[i], |
| 3354 | term->esc_query, TRUE); |
| 3355 | } |
| 3356 | break; |
| 3357 | case 'i': /* MC: Media copy */ |
| 3358 | case ANSI_QUE('i'): |
| 3359 | compatibility(VT100); |
| 3360 | { |
| 3361 | if (term->esc_nargs != 1) break; |
| 3362 | if (term->esc_args[0] == 5 && *term->cfg.printer) { |
| 3363 | term->printing = TRUE; |
| 3364 | term->only_printing = !term->esc_query; |
| 3365 | term->print_state = 0; |
| 3366 | term_print_setup(term); |
| 3367 | } else if (term->esc_args[0] == 4 && |
| 3368 | term->printing) { |
| 3369 | term_print_finish(term); |
| 3370 | } |
| 3371 | } |
| 3372 | break; |
| 3373 | case 'l': /* RM: toggle modes to low */ |
| 3374 | case ANSI_QUE('l'): |
| 3375 | compatibility(VT100); |
| 3376 | { |
| 3377 | int i; |
| 3378 | for (i = 0; i < term->esc_nargs; i++) |
| 3379 | toggle_mode(term, term->esc_args[i], |
| 3380 | term->esc_query, FALSE); |
| 3381 | } |
| 3382 | break; |
| 3383 | case 'g': /* TBC: clear tabs */ |
| 3384 | compatibility(VT100); |
| 3385 | if (term->esc_nargs == 1) { |
| 3386 | if (term->esc_args[0] == 0) { |
| 3387 | term->tabs[term->curs.x] = FALSE; |
| 3388 | } else if (term->esc_args[0] == 3) { |
| 3389 | int i; |
| 3390 | for (i = 0; i < term->cols; i++) |
| 3391 | term->tabs[i] = FALSE; |
| 3392 | } |
| 3393 | } |
| 3394 | break; |
| 3395 | case 'r': /* DECSTBM: set scroll margins */ |
| 3396 | compatibility(VT100); |
| 3397 | if (term->esc_nargs <= 2) { |
| 3398 | int top, bot; |
| 3399 | top = def(term->esc_args[0], 1) - 1; |
| 3400 | bot = (term->esc_nargs <= 1 |
| 3401 | || term->esc_args[1] == 0 ? |
| 3402 | term->rows : |
| 3403 | def(term->esc_args[1], term->rows)) - 1; |
| 3404 | if (bot >= term->rows) |
| 3405 | bot = term->rows - 1; |
| 3406 | /* VTTEST Bug 9 - if region is less than 2 lines |
| 3407 | * don't change region. |
| 3408 | */ |
| 3409 | if (bot - top > 0) { |
| 3410 | term->marg_t = top; |
| 3411 | term->marg_b = bot; |
| 3412 | term->curs.x = 0; |
| 3413 | /* |
| 3414 | * I used to think the cursor should be |
| 3415 | * placed at the top of the newly marginned |
| 3416 | * area. Apparently not: VMS TPU falls over |
| 3417 | * if so. |
| 3418 | * |
| 3419 | * Well actually it should for |
| 3420 | * Origin mode - RDB |
| 3421 | */ |
| 3422 | term->curs.y = (term->dec_om ? |
| 3423 | term->marg_t : 0); |
| 3424 | seen_disp_event(term); |
| 3425 | } |
| 3426 | } |
| 3427 | break; |
| 3428 | case 'm': /* SGR: set graphics rendition */ |
| 3429 | { |
| 3430 | /* |
| 3431 | * A VT100 without the AVO only had one |
| 3432 | * attribute, either underline or |
| 3433 | * reverse video depending on the |
| 3434 | * cursor type, this was selected by |
| 3435 | * CSI 7m. |
| 3436 | * |
| 3437 | * case 2: |
| 3438 | * This is sometimes DIM, eg on the |
| 3439 | * GIGI and Linux |
| 3440 | * case 8: |
| 3441 | * This is sometimes INVIS various ANSI. |
| 3442 | * case 21: |
| 3443 | * This like 22 disables BOLD, DIM and INVIS |
| 3444 | * |
| 3445 | * The ANSI colours appear on any |
| 3446 | * terminal that has colour (obviously) |
| 3447 | * but the interaction between sgr0 and |
| 3448 | * the colours varies but is usually |
| 3449 | * related to the background colour |
| 3450 | * erase item. The interaction between |
| 3451 | * colour attributes and the mono ones |
| 3452 | * is also very implementation |
| 3453 | * dependent. |
| 3454 | * |
| 3455 | * The 39 and 49 attributes are likely |
| 3456 | * to be unimplemented. |
| 3457 | */ |
| 3458 | int i; |
| 3459 | for (i = 0; i < term->esc_nargs; i++) { |
| 3460 | switch (def(term->esc_args[i], 0)) { |
| 3461 | case 0: /* restore defaults */ |
| 3462 | term->curr_attr = term->default_attr; |
| 3463 | break; |
| 3464 | case 1: /* enable bold */ |
| 3465 | compatibility(VT100AVO); |
| 3466 | term->curr_attr |= ATTR_BOLD; |
| 3467 | break; |
| 3468 | case 21: /* (enable double underline) */ |
| 3469 | compatibility(OTHER); |
| 3470 | case 4: /* enable underline */ |
| 3471 | compatibility(VT100AVO); |
| 3472 | term->curr_attr |= ATTR_UNDER; |
| 3473 | break; |
| 3474 | case 5: /* enable blink */ |
| 3475 | compatibility(VT100AVO); |
| 3476 | term->curr_attr |= ATTR_BLINK; |
| 3477 | break; |
| 3478 | case 6: /* SCO light bkgrd */ |
| 3479 | compatibility(SCOANSI); |
| 3480 | term->blink_is_real = FALSE; |
| 3481 | term->curr_attr |= ATTR_BLINK; |
| 3482 | term_schedule_tblink(term); |
| 3483 | break; |
| 3484 | case 7: /* enable reverse video */ |
| 3485 | term->curr_attr |= ATTR_REVERSE; |
| 3486 | break; |
| 3487 | case 10: /* SCO acs off */ |
| 3488 | compatibility(SCOANSI); |
| 3489 | if (term->cfg.no_remote_charset) break; |
| 3490 | term->sco_acs = 0; break; |
| 3491 | case 11: /* SCO acs on */ |
| 3492 | compatibility(SCOANSI); |
| 3493 | if (term->cfg.no_remote_charset) break; |
| 3494 | term->sco_acs = 1; break; |
| 3495 | case 12: /* SCO acs on, |0x80 */ |
| 3496 | compatibility(SCOANSI); |
| 3497 | if (term->cfg.no_remote_charset) break; |
| 3498 | term->sco_acs = 2; break; |
| 3499 | case 22: /* disable bold */ |
| 3500 | compatibility2(OTHER, VT220); |
| 3501 | term->curr_attr &= ~ATTR_BOLD; |
| 3502 | break; |
| 3503 | case 24: /* disable underline */ |
| 3504 | compatibility2(OTHER, VT220); |
| 3505 | term->curr_attr &= ~ATTR_UNDER; |
| 3506 | break; |
| 3507 | case 25: /* disable blink */ |
| 3508 | compatibility2(OTHER, VT220); |
| 3509 | term->curr_attr &= ~ATTR_BLINK; |
| 3510 | break; |
| 3511 | case 27: /* disable reverse video */ |
| 3512 | compatibility2(OTHER, VT220); |
| 3513 | term->curr_attr &= ~ATTR_REVERSE; |
| 3514 | break; |
| 3515 | case 30: |
| 3516 | case 31: |
| 3517 | case 32: |
| 3518 | case 33: |
| 3519 | case 34: |
| 3520 | case 35: |
| 3521 | case 36: |
| 3522 | case 37: |
| 3523 | /* foreground */ |
| 3524 | term->curr_attr &= ~ATTR_FGMASK; |
| 3525 | term->curr_attr |= |
| 3526 | (term->esc_args[i] - 30)<<ATTR_FGSHIFT; |
| 3527 | break; |
| 3528 | case 90: |
| 3529 | case 91: |
| 3530 | case 92: |
| 3531 | case 93: |
| 3532 | case 94: |
| 3533 | case 95: |
| 3534 | case 96: |
| 3535 | case 97: |
| 3536 | /* aixterm-style bright foreground */ |
| 3537 | term->curr_attr &= ~ATTR_FGMASK; |
| 3538 | term->curr_attr |= |
| 3539 | ((term->esc_args[i] - 90 + 8) |
| 3540 | << ATTR_FGSHIFT); |
| 3541 | break; |
| 3542 | case 39: /* default-foreground */ |
| 3543 | term->curr_attr &= ~ATTR_FGMASK; |
| 3544 | term->curr_attr |= ATTR_DEFFG; |
| 3545 | break; |
| 3546 | case 40: |
| 3547 | case 41: |
| 3548 | case 42: |
| 3549 | case 43: |
| 3550 | case 44: |
| 3551 | case 45: |
| 3552 | case 46: |
| 3553 | case 47: |
| 3554 | /* background */ |
| 3555 | term->curr_attr &= ~ATTR_BGMASK; |
| 3556 | term->curr_attr |= |
| 3557 | (term->esc_args[i] - 40)<<ATTR_BGSHIFT; |
| 3558 | break; |
| 3559 | case 100: |
| 3560 | case 101: |
| 3561 | case 102: |
| 3562 | case 103: |
| 3563 | case 104: |
| 3564 | case 105: |
| 3565 | case 106: |
| 3566 | case 107: |
| 3567 | /* aixterm-style bright background */ |
| 3568 | term->curr_attr &= ~ATTR_BGMASK; |
| 3569 | term->curr_attr |= |
| 3570 | ((term->esc_args[i] - 100 + 8) |
| 3571 | << ATTR_BGSHIFT); |
| 3572 | break; |
| 3573 | case 49: /* default-background */ |
| 3574 | term->curr_attr &= ~ATTR_BGMASK; |
| 3575 | term->curr_attr |= ATTR_DEFBG; |
| 3576 | break; |
| 3577 | case 38: /* xterm 256-colour mode */ |
| 3578 | if (i+2 < term->esc_nargs && |
| 3579 | term->esc_args[i+1] == 5) { |
| 3580 | term->curr_attr &= ~ATTR_FGMASK; |
| 3581 | term->curr_attr |= |
| 3582 | ((term->esc_args[i+2] & 0xFF) |
| 3583 | << ATTR_FGSHIFT); |
| 3584 | i += 2; |
| 3585 | } |
| 3586 | break; |
| 3587 | case 48: /* xterm 256-colour mode */ |
| 3588 | if (i+2 < term->esc_nargs && |
| 3589 | term->esc_args[i+1] == 5) { |
| 3590 | term->curr_attr &= ~ATTR_BGMASK; |
| 3591 | term->curr_attr |= |
| 3592 | ((term->esc_args[i+2] & 0xFF) |
| 3593 | << ATTR_BGSHIFT); |
| 3594 | i += 2; |
| 3595 | } |
| 3596 | break; |
| 3597 | } |
| 3598 | } |
| 3599 | set_erase_char(term); |
| 3600 | } |
| 3601 | break; |
| 3602 | case 's': /* save cursor */ |
| 3603 | save_cursor(term, TRUE); |
| 3604 | break; |
| 3605 | case 'u': /* restore cursor */ |
| 3606 | save_cursor(term, FALSE); |
| 3607 | seen_disp_event(term); |
| 3608 | break; |
| 3609 | case 't': /* DECSLPP: set page size - ie window height */ |
| 3610 | /* |
| 3611 | * VT340/VT420 sequence DECSLPP, DEC only allows values |
| 3612 | * 24/25/36/48/72/144 other emulators (eg dtterm) use |
| 3613 | * illegal values (eg first arg 1..9) for window changing |
| 3614 | * and reports. |
| 3615 | */ |
| 3616 | if (term->esc_nargs <= 1 |
| 3617 | && (term->esc_args[0] < 1 || |
| 3618 | term->esc_args[0] >= 24)) { |
| 3619 | compatibility(VT340TEXT); |
| 3620 | if (!term->cfg.no_remote_resize) |
| 3621 | request_resize(term->frontend, term->cols, |
| 3622 | def(term->esc_args[0], 24)); |
| 3623 | deselect(term); |
| 3624 | } else if (term->esc_nargs >= 1 && |
| 3625 | term->esc_args[0] >= 1 && |
| 3626 | term->esc_args[0] < 24) { |
| 3627 | compatibility(OTHER); |
| 3628 | |
| 3629 | switch (term->esc_args[0]) { |
| 3630 | int x, y, len; |
| 3631 | char buf[80], *p; |
| 3632 | case 1: |
| 3633 | set_iconic(term->frontend, FALSE); |
| 3634 | break; |
| 3635 | case 2: |
| 3636 | set_iconic(term->frontend, TRUE); |
| 3637 | break; |
| 3638 | case 3: |
| 3639 | if (term->esc_nargs >= 3) { |
| 3640 | if (!term->cfg.no_remote_resize) |
| 3641 | move_window(term->frontend, |
| 3642 | def(term->esc_args[1], 0), |
| 3643 | def(term->esc_args[2], 0)); |
| 3644 | } |
| 3645 | break; |
| 3646 | case 4: |
| 3647 | /* We should resize the window to a given |
| 3648 | * size in pixels here, but currently our |
| 3649 | * resizing code isn't healthy enough to |
| 3650 | * manage it. */ |
| 3651 | break; |
| 3652 | case 5: |
| 3653 | /* move to top */ |
| 3654 | set_zorder(term->frontend, TRUE); |
| 3655 | break; |
| 3656 | case 6: |
| 3657 | /* move to bottom */ |
| 3658 | set_zorder(term->frontend, FALSE); |
| 3659 | break; |
| 3660 | case 7: |
| 3661 | refresh_window(term->frontend); |
| 3662 | break; |
| 3663 | case 8: |
| 3664 | if (term->esc_nargs >= 3) { |
| 3665 | if (!term->cfg.no_remote_resize) |
| 3666 | request_resize(term->frontend, |
| 3667 | def(term->esc_args[2], term->cfg.width), |
| 3668 | def(term->esc_args[1], term->cfg.height)); |
| 3669 | } |
| 3670 | break; |
| 3671 | case 9: |
| 3672 | if (term->esc_nargs >= 2) |
| 3673 | set_zoomed(term->frontend, |
| 3674 | term->esc_args[1] ? |
| 3675 | TRUE : FALSE); |
| 3676 | break; |
| 3677 | case 11: |
| 3678 | if (term->ldisc) |
| 3679 | ldisc_send(term->ldisc, |
| 3680 | is_iconic(term->frontend) ? |
| 3681 | "\033[1t" : "\033[2t", 4, 0); |
| 3682 | break; |
| 3683 | case 13: |
| 3684 | if (term->ldisc) { |
| 3685 | get_window_pos(term->frontend, &x, &y); |
| 3686 | len = sprintf(buf, "\033[3;%d;%dt", x, y); |
| 3687 | ldisc_send(term->ldisc, buf, len, 0); |
| 3688 | } |
| 3689 | break; |
| 3690 | case 14: |
| 3691 | if (term->ldisc) { |
| 3692 | get_window_pixels(term->frontend, &x, &y); |
| 3693 | len = sprintf(buf, "\033[4;%d;%dt", x, y); |
| 3694 | ldisc_send(term->ldisc, buf, len, 0); |
| 3695 | } |
| 3696 | break; |
| 3697 | case 18: |
| 3698 | if (term->ldisc) { |
| 3699 | len = sprintf(buf, "\033[8;%d;%dt", |
| 3700 | term->rows, term->cols); |
| 3701 | ldisc_send(term->ldisc, buf, len, 0); |
| 3702 | } |
| 3703 | break; |
| 3704 | case 19: |
| 3705 | /* |
| 3706 | * Hmmm. Strictly speaking we |
| 3707 | * should return `the size of the |
| 3708 | * screen in characters', but |
| 3709 | * that's not easy: (a) window |
| 3710 | * furniture being what it is it's |
| 3711 | * hard to compute, and (b) in |
| 3712 | * resize-font mode maximising the |
| 3713 | * window wouldn't change the |
| 3714 | * number of characters. *shrug*. I |
| 3715 | * think we'll ignore it for the |
| 3716 | * moment and see if anyone |
| 3717 | * complains, and then ask them |
| 3718 | * what they would like it to do. |
| 3719 | */ |
| 3720 | break; |
| 3721 | case 20: |
| 3722 | if (term->ldisc && |
| 3723 | !term->cfg.no_remote_qtitle) { |
| 3724 | p = get_window_title(term->frontend, TRUE); |
| 3725 | len = strlen(p); |
| 3726 | ldisc_send(term->ldisc, "\033]L", 3, 0); |
| 3727 | ldisc_send(term->ldisc, p, len, 0); |
| 3728 | ldisc_send(term->ldisc, "\033\\", 2, 0); |
| 3729 | } |
| 3730 | break; |
| 3731 | case 21: |
| 3732 | if (term->ldisc && |
| 3733 | !term->cfg.no_remote_qtitle) { |
| 3734 | p = get_window_title(term->frontend,FALSE); |
| 3735 | len = strlen(p); |
| 3736 | ldisc_send(term->ldisc, "\033]l", 3, 0); |
| 3737 | ldisc_send(term->ldisc, p, len, 0); |
| 3738 | ldisc_send(term->ldisc, "\033\\", 2, 0); |
| 3739 | } |
| 3740 | break; |
| 3741 | } |
| 3742 | } |
| 3743 | break; |
| 3744 | case 'S': /* SU: Scroll up */ |
| 3745 | compatibility(SCOANSI); |
| 3746 | scroll(term, term->marg_t, term->marg_b, |
| 3747 | def(term->esc_args[0], 1), TRUE); |
| 3748 | term->wrapnext = FALSE; |
| 3749 | seen_disp_event(term); |
| 3750 | break; |
| 3751 | case 'T': /* SD: Scroll down */ |
| 3752 | compatibility(SCOANSI); |
| 3753 | scroll(term, term->marg_t, term->marg_b, |
| 3754 | -def(term->esc_args[0], 1), TRUE); |
| 3755 | term->wrapnext = FALSE; |
| 3756 | seen_disp_event(term); |
| 3757 | break; |
| 3758 | case ANSI('|', '*'): /* DECSNLS */ |
| 3759 | /* |
| 3760 | * Set number of lines on screen |
| 3761 | * VT420 uses VGA like hardware and can |
| 3762 | * support any size in reasonable range |
| 3763 | * (24..49 AIUI) with no default specified. |
| 3764 | */ |
| 3765 | compatibility(VT420); |
| 3766 | if (term->esc_nargs == 1 && term->esc_args[0] > 0) { |
| 3767 | if (!term->cfg.no_remote_resize) |
| 3768 | request_resize(term->frontend, term->cols, |
| 3769 | def(term->esc_args[0], |
| 3770 | term->cfg.height)); |
| 3771 | deselect(term); |
| 3772 | } |
| 3773 | break; |
| 3774 | case ANSI('|', '$'): /* DECSCPP */ |
| 3775 | /* |
| 3776 | * Set number of columns per page |
| 3777 | * Docs imply range is only 80 or 132, but |
| 3778 | * I'll allow any. |
| 3779 | */ |
| 3780 | compatibility(VT340TEXT); |
| 3781 | if (term->esc_nargs <= 1) { |
| 3782 | if (!term->cfg.no_remote_resize) |
| 3783 | request_resize(term->frontend, |
| 3784 | def(term->esc_args[0], |
| 3785 | term->cfg.width), term->rows); |
| 3786 | deselect(term); |
| 3787 | } |
| 3788 | break; |
| 3789 | case 'X': /* ECH: write N spaces w/o moving cursor */ |
| 3790 | /* XXX VTTEST says this is vt220, vt510 manual |
| 3791 | * says vt100 */ |
| 3792 | compatibility(ANSIMIN); |
| 3793 | { |
| 3794 | int n = def(term->esc_args[0], 1); |
| 3795 | pos cursplus; |
| 3796 | int p = term->curs.x; |
| 3797 | termline *cline = scrlineptr(term->curs.y); |
| 3798 | |
| 3799 | if (n > term->cols - term->curs.x) |
| 3800 | n = term->cols - term->curs.x; |
| 3801 | cursplus = term->curs; |
| 3802 | cursplus.x += n; |
| 3803 | check_boundary(term, term->curs.x, term->curs.y); |
| 3804 | check_boundary(term, term->curs.x+n, term->curs.y); |
| 3805 | check_selection(term, term->curs, cursplus); |
| 3806 | while (n--) |
| 3807 | copy_termchar(cline, p++, |
| 3808 | &term->erase_char); |
| 3809 | seen_disp_event(term); |
| 3810 | } |
| 3811 | break; |
| 3812 | case 'x': /* DECREQTPARM: report terminal characteristics */ |
| 3813 | compatibility(VT100); |
| 3814 | if (term->ldisc) { |
| 3815 | char buf[32]; |
| 3816 | int i = def(term->esc_args[0], 0); |
| 3817 | if (i == 0 || i == 1) { |
| 3818 | strcpy(buf, "\033[2;1;1;112;112;1;0x"); |
| 3819 | buf[2] += i; |
| 3820 | ldisc_send(term->ldisc, buf, 20, 0); |
| 3821 | } |
| 3822 | } |
| 3823 | break; |
| 3824 | case 'Z': /* CBT */ |
| 3825 | compatibility(OTHER); |
| 3826 | { |
| 3827 | int i = def(term->esc_args[0], 1); |
| 3828 | pos old_curs = term->curs; |
| 3829 | |
| 3830 | for(;i>0 && term->curs.x>0; i--) { |
| 3831 | do { |
| 3832 | term->curs.x--; |
| 3833 | } while (term->curs.x >0 && |
| 3834 | !term->tabs[term->curs.x]); |
| 3835 | } |
| 3836 | check_selection(term, old_curs, term->curs); |
| 3837 | } |
| 3838 | break; |
| 3839 | case ANSI('c', '='): /* Hide or Show Cursor */ |
| 3840 | compatibility(SCOANSI); |
| 3841 | switch(term->esc_args[0]) { |
| 3842 | case 0: /* hide cursor */ |
| 3843 | term->cursor_on = FALSE; |
| 3844 | break; |
| 3845 | case 1: /* restore cursor */ |
| 3846 | term->big_cursor = FALSE; |
| 3847 | term->cursor_on = TRUE; |
| 3848 | break; |
| 3849 | case 2: /* block cursor */ |
| 3850 | term->big_cursor = TRUE; |
| 3851 | term->cursor_on = TRUE; |
| 3852 | break; |
| 3853 | } |
| 3854 | break; |
| 3855 | case ANSI('C', '='): |
| 3856 | /* |
| 3857 | * set cursor start on scanline esc_args[0] and |
| 3858 | * end on scanline esc_args[1].If you set |
| 3859 | * the bottom scan line to a value less than |
| 3860 | * the top scan line, the cursor will disappear. |
| 3861 | */ |
| 3862 | compatibility(SCOANSI); |
| 3863 | if (term->esc_nargs >= 2) { |
| 3864 | if (term->esc_args[0] > term->esc_args[1]) |
| 3865 | term->cursor_on = FALSE; |
| 3866 | else |
| 3867 | term->cursor_on = TRUE; |
| 3868 | } |
| 3869 | break; |
| 3870 | case ANSI('D', '='): |
| 3871 | compatibility(SCOANSI); |
| 3872 | term->blink_is_real = FALSE; |
| 3873 | term_schedule_tblink(term); |
| 3874 | if (term->esc_args[0]>=1) |
| 3875 | term->curr_attr |= ATTR_BLINK; |
| 3876 | else |
| 3877 | term->curr_attr &= ~ATTR_BLINK; |
| 3878 | break; |
| 3879 | case ANSI('E', '='): |
| 3880 | compatibility(SCOANSI); |
| 3881 | term->blink_is_real = (term->esc_args[0] >= 1); |
| 3882 | term_schedule_tblink(term); |
| 3883 | break; |
| 3884 | case ANSI('F', '='): /* set normal foreground */ |
| 3885 | compatibility(SCOANSI); |
| 3886 | if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) { |
| 3887 | long colour = |
| 3888 | (sco2ansicolour[term->esc_args[0] & 0x7] | |
| 3889 | (term->esc_args[0] & 0x8)) << |
| 3890 | ATTR_FGSHIFT; |
| 3891 | term->curr_attr &= ~ATTR_FGMASK; |
| 3892 | term->curr_attr |= colour; |
| 3893 | term->default_attr &= ~ATTR_FGMASK; |
| 3894 | term->default_attr |= colour; |
| 3895 | } |
| 3896 | break; |
| 3897 | case ANSI('G', '='): /* set normal background */ |
| 3898 | compatibility(SCOANSI); |
| 3899 | if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) { |
| 3900 | long colour = |
| 3901 | (sco2ansicolour[term->esc_args[0] & 0x7] | |
| 3902 | (term->esc_args[0] & 0x8)) << |
| 3903 | ATTR_BGSHIFT; |
| 3904 | term->curr_attr &= ~ATTR_BGMASK; |
| 3905 | term->curr_attr |= colour; |
| 3906 | term->default_attr &= ~ATTR_BGMASK; |
| 3907 | term->default_attr |= colour; |
| 3908 | } |
| 3909 | break; |
| 3910 | case ANSI('L', '='): |
| 3911 | compatibility(SCOANSI); |
| 3912 | term->use_bce = (term->esc_args[0] <= 0); |
| 3913 | set_erase_char(term); |
| 3914 | break; |
| 3915 | case ANSI('p', '"'): /* DECSCL: set compat level */ |
| 3916 | /* |
| 3917 | * Allow the host to make this emulator a |
| 3918 | * 'perfect' VT102. This first appeared in |
| 3919 | * the VT220, but we do need to get back to |
| 3920 | * PuTTY mode so I won't check it. |
| 3921 | * |
| 3922 | * The arg in 40..42,50 are a PuTTY extension. |
| 3923 | * The 2nd arg, 8bit vs 7bit is not checked. |
| 3924 | * |
| 3925 | * Setting VT102 mode should also change |
| 3926 | * the Fkeys to generate PF* codes as a |
| 3927 | * real VT102 has no Fkeys. The VT220 does |
| 3928 | * this, F11..F13 become ESC,BS,LF other |
| 3929 | * Fkeys send nothing. |
| 3930 | * |
| 3931 | * Note ESC c will NOT change this! |
| 3932 | */ |
| 3933 | |
| 3934 | switch (term->esc_args[0]) { |
| 3935 | case 61: |
| 3936 | term->compatibility_level &= ~TM_VTXXX; |
| 3937 | term->compatibility_level |= TM_VT102; |
| 3938 | break; |
| 3939 | case 62: |
| 3940 | term->compatibility_level &= ~TM_VTXXX; |
| 3941 | term->compatibility_level |= TM_VT220; |
| 3942 | break; |
| 3943 | |
| 3944 | default: |
| 3945 | if (term->esc_args[0] > 60 && |
| 3946 | term->esc_args[0] < 70) |
| 3947 | term->compatibility_level |= TM_VTXXX; |
| 3948 | break; |
| 3949 | |
| 3950 | case 40: |
| 3951 | term->compatibility_level &= TM_VTXXX; |
| 3952 | break; |
| 3953 | case 41: |
| 3954 | term->compatibility_level = TM_PUTTY; |
| 3955 | break; |
| 3956 | case 42: |
| 3957 | term->compatibility_level = TM_SCOANSI; |
| 3958 | break; |
| 3959 | |
| 3960 | case ARG_DEFAULT: |
| 3961 | term->compatibility_level = TM_PUTTY; |
| 3962 | break; |
| 3963 | case 50: |
| 3964 | break; |
| 3965 | } |
| 3966 | |
| 3967 | /* Change the response to CSI c */ |
| 3968 | if (term->esc_args[0] == 50) { |
| 3969 | int i; |
| 3970 | char lbuf[64]; |
| 3971 | strcpy(term->id_string, "\033[?"); |
| 3972 | for (i = 1; i < term->esc_nargs; i++) { |
| 3973 | if (i != 1) |
| 3974 | strcat(term->id_string, ";"); |
| 3975 | sprintf(lbuf, "%d", term->esc_args[i]); |
| 3976 | strcat(term->id_string, lbuf); |
| 3977 | } |
| 3978 | strcat(term->id_string, "c"); |
| 3979 | } |
| 3980 | #if 0 |
| 3981 | /* Is this a good idea ? |
| 3982 | * Well we should do a soft reset at this point ... |
| 3983 | */ |
| 3984 | if (!has_compat(VT420) && has_compat(VT100)) { |
| 3985 | if (!term->cfg.no_remote_resize) { |
| 3986 | if (term->reset_132) |
| 3987 | request_resize(132, 24); |
| 3988 | else |
| 3989 | request_resize(80, 24); |
| 3990 | } |
| 3991 | } |
| 3992 | #endif |
| 3993 | break; |
| 3994 | } |
| 3995 | break; |
| 3996 | case SEEN_OSC: |
| 3997 | term->osc_w = FALSE; |
| 3998 | switch (c) { |
| 3999 | case 'P': /* Linux palette sequence */ |
| 4000 | term->termstate = SEEN_OSC_P; |
| 4001 | term->osc_strlen = 0; |
| 4002 | break; |
| 4003 | case 'R': /* Linux palette reset */ |
| 4004 | palette_reset(term->frontend); |
| 4005 | term_invalidate(term); |
| 4006 | term->termstate = TOPLEVEL; |
| 4007 | break; |
| 4008 | case 'W': /* word-set */ |
| 4009 | term->termstate = SEEN_OSC_W; |
| 4010 | term->osc_w = TRUE; |
| 4011 | break; |
| 4012 | case '0': |
| 4013 | case '1': |
| 4014 | case '2': |
| 4015 | case '3': |
| 4016 | case '4': |
| 4017 | case '5': |
| 4018 | case '6': |
| 4019 | case '7': |
| 4020 | case '8': |
| 4021 | case '9': |
| 4022 | term->esc_args[0] = 10 * term->esc_args[0] + c - '0'; |
| 4023 | break; |
| 4024 | case 'L': |
| 4025 | /* |
| 4026 | * Grotty hack to support xterm and DECterm title |
| 4027 | * sequences concurrently. |
| 4028 | */ |
| 4029 | if (term->esc_args[0] == 2) { |
| 4030 | term->esc_args[0] = 1; |
| 4031 | break; |
| 4032 | } |
| 4033 | /* else fall through */ |
| 4034 | default: |
| 4035 | term->termstate = OSC_STRING; |
| 4036 | term->osc_strlen = 0; |
| 4037 | } |
| 4038 | break; |
| 4039 | case OSC_STRING: |
| 4040 | /* |
| 4041 | * This OSC stuff is EVIL. It takes just one character to get into |
| 4042 | * sysline mode and it's not initially obvious how to get out. |
| 4043 | * So I've added CR and LF as string aborts. |
| 4044 | * This shouldn't effect compatibility as I believe embedded |
| 4045 | * control characters are supposed to be interpreted (maybe?) |
| 4046 | * and they don't display anything useful anyway. |
| 4047 | * |
| 4048 | * -- RDB |
| 4049 | */ |
| 4050 | if (c == '\012' || c == '\015') { |
| 4051 | term->termstate = TOPLEVEL; |
| 4052 | } else if (c == 0234 || c == '\007') { |
| 4053 | /* |
| 4054 | * These characters terminate the string; ST and BEL |
| 4055 | * terminate the sequence and trigger instant |
| 4056 | * processing of it, whereas ESC goes back to SEEN_ESC |
| 4057 | * mode unless it is followed by \, in which case it is |
| 4058 | * synonymous with ST in the first place. |
| 4059 | */ |
| 4060 | do_osc(term); |
| 4061 | term->termstate = TOPLEVEL; |
| 4062 | } else if (c == '\033') |
| 4063 | term->termstate = OSC_MAYBE_ST; |
| 4064 | else if (term->osc_strlen < OSC_STR_MAX) |
| 4065 | term->osc_string[term->osc_strlen++] = (char)c; |
| 4066 | break; |
| 4067 | case SEEN_OSC_P: |
| 4068 | { |
| 4069 | int max = (term->osc_strlen == 0 ? 21 : 16); |
| 4070 | int val; |
| 4071 | if ((int)c >= '0' && (int)c <= '9') |
| 4072 | val = c - '0'; |
| 4073 | else if ((int)c >= 'A' && (int)c <= 'A' + max - 10) |
| 4074 | val = c - 'A' + 10; |
| 4075 | else if ((int)c >= 'a' && (int)c <= 'a' + max - 10) |
| 4076 | val = c - 'a' + 10; |
| 4077 | else { |
| 4078 | term->termstate = TOPLEVEL; |
| 4079 | break; |
| 4080 | } |
| 4081 | term->osc_string[term->osc_strlen++] = val; |
| 4082 | if (term->osc_strlen >= 7) { |
| 4083 | palette_set(term->frontend, term->osc_string[0], |
| 4084 | term->osc_string[1] * 16 + term->osc_string[2], |
| 4085 | term->osc_string[3] * 16 + term->osc_string[4], |
| 4086 | term->osc_string[5] * 16 + term->osc_string[6]); |
| 4087 | term_invalidate(term); |
| 4088 | term->termstate = TOPLEVEL; |
| 4089 | } |
| 4090 | } |
| 4091 | break; |
| 4092 | case SEEN_OSC_W: |
| 4093 | switch (c) { |
| 4094 | case '0': |
| 4095 | case '1': |
| 4096 | case '2': |
| 4097 | case '3': |
| 4098 | case '4': |
| 4099 | case '5': |
| 4100 | case '6': |
| 4101 | case '7': |
| 4102 | case '8': |
| 4103 | case '9': |
| 4104 | term->esc_args[0] = 10 * term->esc_args[0] + c - '0'; |
| 4105 | break; |
| 4106 | default: |
| 4107 | term->termstate = OSC_STRING; |
| 4108 | term->osc_strlen = 0; |
| 4109 | } |
| 4110 | break; |
| 4111 | case VT52_ESC: |
| 4112 | term->termstate = TOPLEVEL; |
| 4113 | seen_disp_event(term); |
| 4114 | switch (c) { |
| 4115 | case 'A': |
| 4116 | move(term, term->curs.x, term->curs.y - 1, 1); |
| 4117 | break; |
| 4118 | case 'B': |
| 4119 | move(term, term->curs.x, term->curs.y + 1, 1); |
| 4120 | break; |
| 4121 | case 'C': |
| 4122 | move(term, term->curs.x + 1, term->curs.y, 1); |
| 4123 | break; |
| 4124 | case 'D': |
| 4125 | move(term, term->curs.x - 1, term->curs.y, 1); |
| 4126 | break; |
| 4127 | /* |
| 4128 | * From the VT100 Manual |
| 4129 | * NOTE: The special graphics characters in the VT100 |
| 4130 | * are different from those in the VT52 |
| 4131 | * |
| 4132 | * From VT102 manual: |
| 4133 | * 137 _ Blank - Same |
| 4134 | * 140 ` Reserved - Humm. |
| 4135 | * 141 a Solid rectangle - Similar |
| 4136 | * 142 b 1/ - Top half of fraction for the |
| 4137 | * 143 c 3/ - subscript numbers below. |
| 4138 | * 144 d 5/ |
| 4139 | * 145 e 7/ |
| 4140 | * 146 f Degrees - Same |
| 4141 | * 147 g Plus or minus - Same |
| 4142 | * 150 h Right arrow |
| 4143 | * 151 i Ellipsis (dots) |
| 4144 | * 152 j Divide by |
| 4145 | * 153 k Down arrow |
| 4146 | * 154 l Bar at scan 0 |
| 4147 | * 155 m Bar at scan 1 |
| 4148 | * 156 n Bar at scan 2 |
| 4149 | * 157 o Bar at scan 3 - Similar |
| 4150 | * 160 p Bar at scan 4 - Similar |
| 4151 | * 161 q Bar at scan 5 - Similar |
| 4152 | * 162 r Bar at scan 6 - Same |
| 4153 | * 163 s Bar at scan 7 - Similar |
| 4154 | * 164 t Subscript 0 |
| 4155 | * 165 u Subscript 1 |
| 4156 | * 166 v Subscript 2 |
| 4157 | * 167 w Subscript 3 |
| 4158 | * 170 x Subscript 4 |
| 4159 | * 171 y Subscript 5 |
| 4160 | * 172 z Subscript 6 |
| 4161 | * 173 { Subscript 7 |
| 4162 | * 174 | Subscript 8 |
| 4163 | * 175 } Subscript 9 |
| 4164 | * 176 ~ Paragraph |
| 4165 | * |
| 4166 | */ |
| 4167 | case 'F': |
| 4168 | term->cset_attr[term->cset = 0] = CSET_LINEDRW; |
| 4169 | break; |
| 4170 | case 'G': |
| 4171 | term->cset_attr[term->cset = 0] = CSET_ASCII; |
| 4172 | break; |
| 4173 | case 'H': |
| 4174 | move(term, 0, 0, 0); |
| 4175 | break; |
| 4176 | case 'I': |
| 4177 | if (term->curs.y == 0) |
| 4178 | scroll(term, 0, term->rows - 1, -1, TRUE); |
| 4179 | else if (term->curs.y > 0) |
| 4180 | term->curs.y--; |
| 4181 | term->wrapnext = FALSE; |
| 4182 | break; |
| 4183 | case 'J': |
| 4184 | erase_lots(term, FALSE, FALSE, TRUE); |
| 4185 | term->disptop = 0; |
| 4186 | break; |
| 4187 | case 'K': |
| 4188 | erase_lots(term, TRUE, FALSE, TRUE); |
| 4189 | break; |
| 4190 | #if 0 |
| 4191 | case 'V': |
| 4192 | /* XXX Print cursor line */ |
| 4193 | break; |
| 4194 | case 'W': |
| 4195 | /* XXX Start controller mode */ |
| 4196 | break; |
| 4197 | case 'X': |
| 4198 | /* XXX Stop controller mode */ |
| 4199 | break; |
| 4200 | #endif |
| 4201 | case 'Y': |
| 4202 | term->termstate = VT52_Y1; |
| 4203 | break; |
| 4204 | case 'Z': |
| 4205 | if (term->ldisc) |
| 4206 | ldisc_send(term->ldisc, "\033/Z", 3, 0); |
| 4207 | break; |
| 4208 | case '=': |
| 4209 | term->app_keypad_keys = TRUE; |
| 4210 | break; |
| 4211 | case '>': |
| 4212 | term->app_keypad_keys = FALSE; |
| 4213 | break; |
| 4214 | case '<': |
| 4215 | /* XXX This should switch to VT100 mode not current or default |
| 4216 | * VT mode. But this will only have effect in a VT220+ |
| 4217 | * emulation. |
| 4218 | */ |
| 4219 | term->vt52_mode = FALSE; |
| 4220 | term->blink_is_real = term->cfg.blinktext; |
| 4221 | term_schedule_tblink(term); |
| 4222 | break; |
| 4223 | #if 0 |
| 4224 | case '^': |
| 4225 | /* XXX Enter auto print mode */ |
| 4226 | break; |
| 4227 | case '_': |
| 4228 | /* XXX Exit auto print mode */ |
| 4229 | break; |
| 4230 | case ']': |
| 4231 | /* XXX Print screen */ |
| 4232 | break; |
| 4233 | #endif |
| 4234 | |
| 4235 | #ifdef VT52_PLUS |
| 4236 | case 'E': |
| 4237 | /* compatibility(ATARI) */ |
| 4238 | move(term, 0, 0, 0); |
| 4239 | erase_lots(term, FALSE, FALSE, TRUE); |
| 4240 | term->disptop = 0; |
| 4241 | break; |
| 4242 | case 'L': |
| 4243 | /* compatibility(ATARI) */ |
| 4244 | if (term->curs.y <= term->marg_b) |
| 4245 | scroll(term, term->curs.y, term->marg_b, -1, FALSE); |
| 4246 | break; |
| 4247 | case 'M': |
| 4248 | /* compatibility(ATARI) */ |
| 4249 | if (term->curs.y <= term->marg_b) |
| 4250 | scroll(term, term->curs.y, term->marg_b, 1, TRUE); |
| 4251 | break; |
| 4252 | case 'b': |
| 4253 | /* compatibility(ATARI) */ |
| 4254 | term->termstate = VT52_FG; |
| 4255 | break; |
| 4256 | case 'c': |
| 4257 | /* compatibility(ATARI) */ |
| 4258 | term->termstate = VT52_BG; |
| 4259 | break; |
| 4260 | case 'd': |
| 4261 | /* compatibility(ATARI) */ |
| 4262 | erase_lots(term, FALSE, TRUE, FALSE); |
| 4263 | term->disptop = 0; |
| 4264 | break; |
| 4265 | case 'e': |
| 4266 | /* compatibility(ATARI) */ |
| 4267 | term->cursor_on = TRUE; |
| 4268 | break; |
| 4269 | case 'f': |
| 4270 | /* compatibility(ATARI) */ |
| 4271 | term->cursor_on = FALSE; |
| 4272 | break; |
| 4273 | /* case 'j': Save cursor position - broken on ST */ |
| 4274 | /* case 'k': Restore cursor position */ |
| 4275 | case 'l': |
| 4276 | /* compatibility(ATARI) */ |
| 4277 | erase_lots(term, TRUE, TRUE, TRUE); |
| 4278 | term->curs.x = 0; |
| 4279 | term->wrapnext = FALSE; |
| 4280 | break; |
| 4281 | case 'o': |
| 4282 | /* compatibility(ATARI) */ |
| 4283 | erase_lots(term, TRUE, TRUE, FALSE); |
| 4284 | break; |
| 4285 | case 'p': |
| 4286 | /* compatibility(ATARI) */ |
| 4287 | term->curr_attr |= ATTR_REVERSE; |
| 4288 | break; |
| 4289 | case 'q': |
| 4290 | /* compatibility(ATARI) */ |
| 4291 | term->curr_attr &= ~ATTR_REVERSE; |
| 4292 | break; |
| 4293 | case 'v': /* wrap Autowrap on - Wyse style */ |
| 4294 | /* compatibility(ATARI) */ |
| 4295 | term->wrap = 1; |
| 4296 | break; |
| 4297 | case 'w': /* Autowrap off */ |
| 4298 | /* compatibility(ATARI) */ |
| 4299 | term->wrap = 0; |
| 4300 | break; |
| 4301 | |
| 4302 | case 'R': |
| 4303 | /* compatibility(OTHER) */ |
| 4304 | term->vt52_bold = FALSE; |
| 4305 | term->curr_attr = ATTR_DEFAULT; |
| 4306 | set_erase_char(term); |
| 4307 | break; |
| 4308 | case 'S': |
| 4309 | /* compatibility(VI50) */ |
| 4310 | term->curr_attr |= ATTR_UNDER; |
| 4311 | break; |
| 4312 | case 'W': |
| 4313 | /* compatibility(VI50) */ |
| 4314 | term->curr_attr &= ~ATTR_UNDER; |
| 4315 | break; |
| 4316 | case 'U': |
| 4317 | /* compatibility(VI50) */ |
| 4318 | term->vt52_bold = TRUE; |
| 4319 | term->curr_attr |= ATTR_BOLD; |
| 4320 | break; |
| 4321 | case 'T': |
| 4322 | /* compatibility(VI50) */ |
| 4323 | term->vt52_bold = FALSE; |
| 4324 | term->curr_attr &= ~ATTR_BOLD; |
| 4325 | break; |
| 4326 | #endif |
| 4327 | } |
| 4328 | break; |
| 4329 | case VT52_Y1: |
| 4330 | term->termstate = VT52_Y2; |
| 4331 | move(term, term->curs.x, c - ' ', 0); |
| 4332 | break; |
| 4333 | case VT52_Y2: |
| 4334 | term->termstate = TOPLEVEL; |
| 4335 | move(term, c - ' ', term->curs.y, 0); |
| 4336 | break; |
| 4337 | |
| 4338 | #ifdef VT52_PLUS |
| 4339 | case VT52_FG: |
| 4340 | term->termstate = TOPLEVEL; |
| 4341 | term->curr_attr &= ~ATTR_FGMASK; |
| 4342 | term->curr_attr &= ~ATTR_BOLD; |
| 4343 | term->curr_attr |= (c & 0xF) << ATTR_FGSHIFT; |
| 4344 | set_erase_char(term); |
| 4345 | break; |
| 4346 | case VT52_BG: |
| 4347 | term->termstate = TOPLEVEL; |
| 4348 | term->curr_attr &= ~ATTR_BGMASK; |
| 4349 | term->curr_attr &= ~ATTR_BLINK; |
| 4350 | term->curr_attr |= (c & 0xF) << ATTR_BGSHIFT; |
| 4351 | set_erase_char(term); |
| 4352 | break; |
| 4353 | #endif |
| 4354 | default: break; /* placate gcc warning about enum use */ |
| 4355 | } |
| 4356 | if (term->selstate != NO_SELECTION) { |
| 4357 | pos cursplus = term->curs; |
| 4358 | incpos(cursplus); |
| 4359 | check_selection(term, term->curs, cursplus); |
| 4360 | } |
| 4361 | } |
| 4362 | |
| 4363 | term_print_flush(term); |
| 4364 | if (term->cfg.logflush) |
| 4365 | logflush(term->logctx); |
| 4366 | } |
| 4367 | |
| 4368 | /* |
| 4369 | * To prevent having to run the reasonably tricky bidi algorithm |
| 4370 | * too many times, we maintain a cache of the last lineful of data |
| 4371 | * fed to the algorithm on each line of the display. |
| 4372 | */ |
| 4373 | static int term_bidi_cache_hit(Terminal *term, int line, |
| 4374 | termchar *lbefore, int width) |
| 4375 | { |
| 4376 | int i; |
| 4377 | |
| 4378 | if (!term->pre_bidi_cache) |
| 4379 | return FALSE; /* cache doesn't even exist yet! */ |
| 4380 | |
| 4381 | if (line >= term->bidi_cache_size) |
| 4382 | return FALSE; /* cache doesn't have this many lines */ |
| 4383 | |
| 4384 | if (!term->pre_bidi_cache[line].chars) |
| 4385 | return FALSE; /* cache doesn't contain _this_ line */ |
| 4386 | |
| 4387 | if (term->pre_bidi_cache[line].width != width) |
| 4388 | return FALSE; /* line is wrong width */ |
| 4389 | |
| 4390 | for (i = 0; i < width; i++) |
| 4391 | if (!termchars_equal(term->pre_bidi_cache[line].chars+i, lbefore+i)) |
| 4392 | return FALSE; /* line doesn't match cache */ |
| 4393 | |
| 4394 | return TRUE; /* it didn't match. */ |
| 4395 | } |
| 4396 | |
| 4397 | static void term_bidi_cache_store(Terminal *term, int line, termchar *lbefore, |
| 4398 | termchar *lafter, bidi_char *wcTo, |
| 4399 | int width, int size) |
| 4400 | { |
| 4401 | int i; |
| 4402 | |
| 4403 | if (!term->pre_bidi_cache || term->bidi_cache_size <= line) { |
| 4404 | int j = term->bidi_cache_size; |
| 4405 | term->bidi_cache_size = line+1; |
| 4406 | term->pre_bidi_cache = sresize(term->pre_bidi_cache, |
| 4407 | term->bidi_cache_size, |
| 4408 | struct bidi_cache_entry); |
| 4409 | term->post_bidi_cache = sresize(term->post_bidi_cache, |
| 4410 | term->bidi_cache_size, |
| 4411 | struct bidi_cache_entry); |
| 4412 | while (j < term->bidi_cache_size) { |
| 4413 | term->pre_bidi_cache[j].chars = |
| 4414 | term->post_bidi_cache[j].chars = NULL; |
| 4415 | term->pre_bidi_cache[j].width = |
| 4416 | term->post_bidi_cache[j].width = -1; |
| 4417 | term->pre_bidi_cache[j].forward = |
| 4418 | term->post_bidi_cache[j].forward = NULL; |
| 4419 | term->pre_bidi_cache[j].backward = |
| 4420 | term->post_bidi_cache[j].backward = NULL; |
| 4421 | j++; |
| 4422 | } |
| 4423 | } |
| 4424 | |
| 4425 | sfree(term->pre_bidi_cache[line].chars); |
| 4426 | sfree(term->post_bidi_cache[line].chars); |
| 4427 | sfree(term->post_bidi_cache[line].forward); |
| 4428 | sfree(term->post_bidi_cache[line].backward); |
| 4429 | |
| 4430 | term->pre_bidi_cache[line].width = width; |
| 4431 | term->pre_bidi_cache[line].chars = snewn(size, termchar); |
| 4432 | term->post_bidi_cache[line].width = width; |
| 4433 | term->post_bidi_cache[line].chars = snewn(size, termchar); |
| 4434 | term->post_bidi_cache[line].forward = snewn(width, int); |
| 4435 | term->post_bidi_cache[line].backward = snewn(width, int); |
| 4436 | |
| 4437 | memcpy(term->pre_bidi_cache[line].chars, lbefore, size * TSIZE); |
| 4438 | memcpy(term->post_bidi_cache[line].chars, lafter, size * TSIZE); |
| 4439 | memset(term->post_bidi_cache[line].forward, 0, width * sizeof(int)); |
| 4440 | memset(term->post_bidi_cache[line].backward, 0, width * sizeof(int)); |
| 4441 | |
| 4442 | for (i = 0; i < width; i++) { |
| 4443 | int p = wcTo[i].index; |
| 4444 | |
| 4445 | assert(0 <= p && p < width); |
| 4446 | |
| 4447 | term->post_bidi_cache[line].backward[i] = p; |
| 4448 | term->post_bidi_cache[line].forward[p] = i; |
| 4449 | } |
| 4450 | } |
| 4451 | |
| 4452 | /* |
| 4453 | * Prepare the bidi information for a screen line. Returns the |
| 4454 | * transformed list of termchars, or NULL if no transformation at |
| 4455 | * all took place (because bidi is disabled). If return was |
| 4456 | * non-NULL, auxiliary information such as the forward and reverse |
| 4457 | * mappings of permutation position are available in |
| 4458 | * term->post_bidi_cache[scr_y].*. |
| 4459 | */ |
| 4460 | static termchar *term_bidi_line(Terminal *term, struct termline *ldata, |
| 4461 | int scr_y) |
| 4462 | { |
| 4463 | termchar *lchars; |
| 4464 | int it; |
| 4465 | |
| 4466 | /* Do Arabic shaping and bidi. */ |
| 4467 | if(!term->cfg.bidi || !term->cfg.arabicshaping) { |
| 4468 | |
| 4469 | if (!term_bidi_cache_hit(term, scr_y, ldata->chars, term->cols)) { |
| 4470 | |
| 4471 | if (term->wcFromTo_size < term->cols) { |
| 4472 | term->wcFromTo_size = term->cols; |
| 4473 | term->wcFrom = sresize(term->wcFrom, term->wcFromTo_size, |
| 4474 | bidi_char); |
| 4475 | term->wcTo = sresize(term->wcTo, term->wcFromTo_size, |
| 4476 | bidi_char); |
| 4477 | } |
| 4478 | |
| 4479 | for(it=0; it<term->cols ; it++) |
| 4480 | { |
| 4481 | unsigned long uc = (ldata->chars[it].chr); |
| 4482 | |
| 4483 | switch (uc & CSET_MASK) { |
| 4484 | case CSET_LINEDRW: |
| 4485 | if (!term->cfg.rawcnp) { |
| 4486 | uc = term->ucsdata->unitab_xterm[uc & 0xFF]; |
| 4487 | break; |
| 4488 | } |
| 4489 | case CSET_ASCII: |
| 4490 | uc = term->ucsdata->unitab_line[uc & 0xFF]; |
| 4491 | break; |
| 4492 | case CSET_SCOACS: |
| 4493 | uc = term->ucsdata->unitab_scoacs[uc&0xFF]; |
| 4494 | break; |
| 4495 | } |
| 4496 | switch (uc & CSET_MASK) { |
| 4497 | case CSET_ACP: |
| 4498 | uc = term->ucsdata->unitab_font[uc & 0xFF]; |
| 4499 | break; |
| 4500 | case CSET_OEMCP: |
| 4501 | uc = term->ucsdata->unitab_oemcp[uc & 0xFF]; |
| 4502 | break; |
| 4503 | } |
| 4504 | |
| 4505 | term->wcFrom[it].origwc = term->wcFrom[it].wc = |
| 4506 | (wchar_t)uc; |
| 4507 | term->wcFrom[it].index = it; |
| 4508 | } |
| 4509 | |
| 4510 | if(!term->cfg.bidi) |
| 4511 | do_bidi(term->wcFrom, term->cols); |
| 4512 | |
| 4513 | /* this is saved iff done from inside the shaping */ |
| 4514 | if(!term->cfg.bidi && term->cfg.arabicshaping) |
| 4515 | for(it=0; it<term->cols; it++) |
| 4516 | term->wcTo[it] = term->wcFrom[it]; |
| 4517 | |
| 4518 | if(!term->cfg.arabicshaping) |
| 4519 | do_shape(term->wcFrom, term->wcTo, term->cols); |
| 4520 | |
| 4521 | if (term->ltemp_size < ldata->size) { |
| 4522 | term->ltemp_size = ldata->size; |
| 4523 | term->ltemp = sresize(term->ltemp, term->ltemp_size, |
| 4524 | termchar); |
| 4525 | } |
| 4526 | |
| 4527 | memcpy(term->ltemp, ldata->chars, ldata->size * TSIZE); |
| 4528 | |
| 4529 | for(it=0; it<term->cols ; it++) |
| 4530 | { |
| 4531 | term->ltemp[it] = ldata->chars[term->wcTo[it].index]; |
| 4532 | if (term->ltemp[it].cc_next) |
| 4533 | term->ltemp[it].cc_next -= |
| 4534 | it - term->wcTo[it].index; |
| 4535 | |
| 4536 | if (term->wcTo[it].origwc != term->wcTo[it].wc) |
| 4537 | term->ltemp[it].chr = term->wcTo[it].wc; |
| 4538 | } |
| 4539 | term_bidi_cache_store(term, scr_y, ldata->chars, |
| 4540 | term->ltemp, term->wcTo, |
| 4541 | term->cols, ldata->size); |
| 4542 | |
| 4543 | lchars = term->ltemp; |
| 4544 | } else { |
| 4545 | lchars = term->post_bidi_cache[scr_y].chars; |
| 4546 | } |
| 4547 | } else { |
| 4548 | lchars = NULL; |
| 4549 | } |
| 4550 | |
| 4551 | return lchars; |
| 4552 | } |
| 4553 | |
| 4554 | /* |
| 4555 | * Given a context, update the window. Out of paranoia, we don't |
| 4556 | * allow WM_PAINT responses to do scrolling optimisations. |
| 4557 | */ |
| 4558 | static void do_paint(Terminal *term, Context ctx, int may_optimise) |
| 4559 | { |
| 4560 | int i, j, our_curs_y, our_curs_x; |
| 4561 | int rv, cursor; |
| 4562 | pos scrpos; |
| 4563 | wchar_t *ch; |
| 4564 | int chlen; |
| 4565 | #ifdef OPTIMISE_SCROLL |
| 4566 | struct scrollregion *sr; |
| 4567 | #endif /* OPTIMISE_SCROLL */ |
| 4568 | termchar *newline; |
| 4569 | |
| 4570 | chlen = 1024; |
| 4571 | ch = snewn(chlen, wchar_t); |
| 4572 | |
| 4573 | newline = snewn(term->cols, termchar); |
| 4574 | |
| 4575 | rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0); |
| 4576 | |
| 4577 | /* Depends on: |
| 4578 | * screen array, disptop, scrtop, |
| 4579 | * selection, rv, |
| 4580 | * cfg.blinkpc, blink_is_real, tblinker, |
| 4581 | * curs.y, curs.x, cblinker, cfg.blink_cur, cursor_on, has_focus, wrapnext |
| 4582 | */ |
| 4583 | |
| 4584 | /* Has the cursor position or type changed ? */ |
| 4585 | if (term->cursor_on) { |
| 4586 | if (term->has_focus) { |
| 4587 | if (term->cblinker || !term->cfg.blink_cur) |
| 4588 | cursor = TATTR_ACTCURS; |
| 4589 | else |
| 4590 | cursor = 0; |
| 4591 | } else |
| 4592 | cursor = TATTR_PASCURS; |
| 4593 | if (term->wrapnext) |
| 4594 | cursor |= TATTR_RIGHTCURS; |
| 4595 | } else |
| 4596 | cursor = 0; |
| 4597 | our_curs_y = term->curs.y - term->disptop; |
| 4598 | { |
| 4599 | /* |
| 4600 | * Adjust the cursor position: |
| 4601 | * - for bidi |
| 4602 | * - in the case where it's resting on the right-hand half |
| 4603 | * of a CJK wide character. xterm's behaviour here, |
| 4604 | * which seems adequate to me, is to display the cursor |
| 4605 | * covering the _whole_ character, exactly as if it were |
| 4606 | * one space to the left. |
| 4607 | */ |
| 4608 | termline *ldata = lineptr(term->curs.y); |
| 4609 | termchar *lchars; |
| 4610 | |
| 4611 | our_curs_x = term->curs.x; |
| 4612 | |
| 4613 | if ( (lchars = term_bidi_line(term, ldata, our_curs_y)) != NULL) { |
| 4614 | our_curs_x = term->post_bidi_cache[our_curs_y].forward[our_curs_x]; |
| 4615 | } else |
| 4616 | lchars = ldata->chars; |
| 4617 | |
| 4618 | if (our_curs_x > 0 && |
| 4619 | lchars[our_curs_x].chr == UCSWIDE) |
| 4620 | our_curs_x--; |
| 4621 | |
| 4622 | unlineptr(ldata); |
| 4623 | } |
| 4624 | |
| 4625 | /* |
| 4626 | * If the cursor is not where it was last time we painted, and |
| 4627 | * its previous position is visible on screen, invalidate its |
| 4628 | * previous position. |
| 4629 | */ |
| 4630 | if (term->dispcursy >= 0 && |
| 4631 | (term->curstype != cursor || |
| 4632 | term->dispcursy != our_curs_y || |
| 4633 | term->dispcursx != our_curs_x)) { |
| 4634 | termchar *dispcurs = term->disptext[term->dispcursy]->chars + |
| 4635 | term->dispcursx; |
| 4636 | |
| 4637 | if (term->dispcursx > 0 && dispcurs->chr == UCSWIDE) |
| 4638 | dispcurs[-1].attr |= ATTR_INVALID; |
| 4639 | if (term->dispcursx < term->cols-1 && dispcurs[1].chr == UCSWIDE) |
| 4640 | dispcurs[1].attr |= ATTR_INVALID; |
| 4641 | dispcurs->attr |= ATTR_INVALID; |
| 4642 | |
| 4643 | term->curstype = 0; |
| 4644 | } |
| 4645 | term->dispcursx = term->dispcursy = -1; |
| 4646 | |
| 4647 | #ifdef OPTIMISE_SCROLL |
| 4648 | /* Do scrolls */ |
| 4649 | sr = term->scrollhead; |
| 4650 | while (sr) { |
| 4651 | struct scrollregion *next = sr->next; |
| 4652 | do_scroll(ctx, sr->topline, sr->botline, sr->lines); |
| 4653 | sfree(sr); |
| 4654 | sr = next; |
| 4655 | } |
| 4656 | term->scrollhead = term->scrolltail = NULL; |
| 4657 | #endif /* OPTIMISE_SCROLL */ |
| 4658 | |
| 4659 | /* The normal screen data */ |
| 4660 | for (i = 0; i < term->rows; i++) { |
| 4661 | termline *ldata; |
| 4662 | termchar *lchars; |
| 4663 | int dirty_line, dirty_run, selected; |
| 4664 | unsigned long attr = 0, cset = 0; |
| 4665 | int updated_line = 0; |
| 4666 | int start = 0; |
| 4667 | int ccount = 0; |
| 4668 | int last_run_dirty = 0; |
| 4669 | int laststart, dirtyrect; |
| 4670 | int *backward; |
| 4671 | |
| 4672 | scrpos.y = i + term->disptop; |
| 4673 | ldata = lineptr(scrpos.y); |
| 4674 | |
| 4675 | /* Do Arabic shaping and bidi. */ |
| 4676 | lchars = term_bidi_line(term, ldata, i); |
| 4677 | if (lchars) { |
| 4678 | backward = term->post_bidi_cache[i].backward; |
| 4679 | } else { |
| 4680 | lchars = ldata->chars; |
| 4681 | backward = NULL; |
| 4682 | } |
| 4683 | |
| 4684 | /* |
| 4685 | * First loop: work along the line deciding what we want |
| 4686 | * each character cell to look like. |
| 4687 | */ |
| 4688 | for (j = 0; j < term->cols; j++) { |
| 4689 | unsigned long tattr, tchar; |
| 4690 | termchar *d = lchars + j; |
| 4691 | scrpos.x = backward ? backward[j] : j; |
| 4692 | |
| 4693 | tchar = d->chr; |
| 4694 | tattr = d->attr; |
| 4695 | |
| 4696 | if (!term->cfg.ansi_colour) |
| 4697 | tattr = (tattr & ~(ATTR_FGMASK | ATTR_BGMASK)) | |
| 4698 | ATTR_DEFFG | ATTR_DEFBG; |
| 4699 | |
| 4700 | if (!term->cfg.xterm_256_colour) { |
| 4701 | int colour; |
| 4702 | colour = (tattr & ATTR_FGMASK) >> ATTR_FGSHIFT; |
| 4703 | if (colour >= 16 && colour < 256) |
| 4704 | tattr = (tattr &~ ATTR_FGMASK) | ATTR_DEFFG; |
| 4705 | colour = (tattr & ATTR_BGMASK) >> ATTR_BGSHIFT; |
| 4706 | if (colour >= 16 && colour < 256) |
| 4707 | tattr = (tattr &~ ATTR_BGMASK) | ATTR_DEFBG; |
| 4708 | } |
| 4709 | |
| 4710 | switch (tchar & CSET_MASK) { |
| 4711 | case CSET_ASCII: |
| 4712 | tchar = term->ucsdata->unitab_line[tchar & 0xFF]; |
| 4713 | break; |
| 4714 | case CSET_LINEDRW: |
| 4715 | tchar = term->ucsdata->unitab_xterm[tchar & 0xFF]; |
| 4716 | break; |
| 4717 | case CSET_SCOACS: |
| 4718 | tchar = term->ucsdata->unitab_scoacs[tchar&0xFF]; |
| 4719 | break; |
| 4720 | } |
| 4721 | if (j < term->cols-1 && d[1].chr == UCSWIDE) |
| 4722 | tattr |= ATTR_WIDE; |
| 4723 | |
| 4724 | /* Video reversing things */ |
| 4725 | if (term->selstate == DRAGGING || term->selstate == SELECTED) { |
| 4726 | if (term->seltype == LEXICOGRAPHIC) |
| 4727 | selected = (posle(term->selstart, scrpos) && |
| 4728 | poslt(scrpos, term->selend)); |
| 4729 | else |
| 4730 | selected = (posPle(term->selstart, scrpos) && |
| 4731 | posPlt(scrpos, term->selend)); |
| 4732 | } else |
| 4733 | selected = FALSE; |
| 4734 | tattr = (tattr ^ rv |
| 4735 | ^ (selected ? ATTR_REVERSE : 0)); |
| 4736 | |
| 4737 | /* 'Real' blinking ? */ |
| 4738 | if (term->blink_is_real && (tattr & ATTR_BLINK)) { |
| 4739 | if (term->has_focus && term->tblinker) { |
| 4740 | tchar = term->ucsdata->unitab_line[(unsigned char)' ']; |
| 4741 | } |
| 4742 | tattr &= ~ATTR_BLINK; |
| 4743 | } |
| 4744 | |
| 4745 | /* |
| 4746 | * Check the font we'll _probably_ be using to see if |
| 4747 | * the character is wide when we don't want it to be. |
| 4748 | */ |
| 4749 | if (tchar != term->disptext[i]->chars[j].chr || |
| 4750 | tattr != (term->disptext[i]->chars[j].attr &~ |
| 4751 | (ATTR_NARROW | DATTR_MASK))) { |
| 4752 | if ((tattr & ATTR_WIDE) == 0 && char_width(ctx, tchar) == 2) |
| 4753 | tattr |= ATTR_NARROW; |
| 4754 | } else if (term->disptext[i]->chars[j].attr & ATTR_NARROW) |
| 4755 | tattr |= ATTR_NARROW; |
| 4756 | |
| 4757 | if (i == our_curs_y && j == our_curs_x) { |
| 4758 | tattr |= cursor; |
| 4759 | term->curstype = cursor; |
| 4760 | term->dispcursx = j; |
| 4761 | term->dispcursy = i; |
| 4762 | } |
| 4763 | |
| 4764 | /* FULL-TERMCHAR */ |
| 4765 | newline[j].attr = tattr; |
| 4766 | newline[j].chr = tchar; |
| 4767 | /* Combining characters are still read from lchars */ |
| 4768 | newline[j].cc_next = 0; |
| 4769 | } |
| 4770 | |
| 4771 | /* |
| 4772 | * Now loop over the line again, noting where things have |
| 4773 | * changed. |
| 4774 | * |
| 4775 | * During this loop, we keep track of where we last saw |
| 4776 | * DATTR_STARTRUN. Any mismatch automatically invalidates |
| 4777 | * _all_ of the containing run that was last printed: that |
| 4778 | * is, any rectangle that was drawn in one go in the |
| 4779 | * previous update should be either left completely alone |
| 4780 | * or overwritten in its entirety. This, along with the |
| 4781 | * expectation that front ends clip all text runs to their |
| 4782 | * bounding rectangle, should solve any possible problems |
| 4783 | * with fonts that overflow their character cells. |
| 4784 | */ |
| 4785 | laststart = 0; |
| 4786 | dirtyrect = FALSE; |
| 4787 | for (j = 0; j < term->cols; j++) { |
| 4788 | if (term->disptext[i]->chars[j].attr & DATTR_STARTRUN) { |
| 4789 | laststart = j; |
| 4790 | dirtyrect = FALSE; |
| 4791 | } |
| 4792 | |
| 4793 | if (term->disptext[i]->chars[j].chr != newline[j].chr || |
| 4794 | (term->disptext[i]->chars[j].attr &~ DATTR_MASK) |
| 4795 | != newline[j].attr) { |
| 4796 | int k; |
| 4797 | |
| 4798 | for (k = laststart; k < j; k++) |
| 4799 | term->disptext[i]->chars[k].attr |= ATTR_INVALID; |
| 4800 | |
| 4801 | dirtyrect = TRUE; |
| 4802 | } |
| 4803 | |
| 4804 | if (dirtyrect) |
| 4805 | term->disptext[i]->chars[j].attr |= ATTR_INVALID; |
| 4806 | } |
| 4807 | |
| 4808 | /* |
| 4809 | * Finally, loop once more and actually do the drawing. |
| 4810 | */ |
| 4811 | dirty_run = dirty_line = (ldata->lattr != |
| 4812 | term->disptext[i]->lattr); |
| 4813 | term->disptext[i]->lattr = ldata->lattr; |
| 4814 | |
| 4815 | for (j = 0; j < term->cols; j++) { |
| 4816 | unsigned long tattr, tchar; |
| 4817 | int break_run, do_copy; |
| 4818 | termchar *d = lchars + j; |
| 4819 | |
| 4820 | tattr = newline[j].attr; |
| 4821 | tchar = newline[j].chr; |
| 4822 | |
| 4823 | if ((term->disptext[i]->chars[j].attr ^ tattr) & ATTR_WIDE) |
| 4824 | dirty_line = TRUE; |
| 4825 | |
| 4826 | break_run = ((tattr ^ attr) & term->attr_mask) != 0; |
| 4827 | |
| 4828 | /* Special hack for VT100 Linedraw glyphs */ |
| 4829 | if (tchar >= 0x23BA && tchar <= 0x23BD) |
| 4830 | break_run = TRUE; |
| 4831 | |
| 4832 | /* |
| 4833 | * Separate out sequences of characters that have the |
| 4834 | * same CSET, if that CSET is a magic one. |
| 4835 | */ |
| 4836 | if (CSET_OF(tchar) != cset) |
| 4837 | break_run = TRUE; |
| 4838 | |
| 4839 | /* |
| 4840 | * Break on both sides of any combined-character cell. |
| 4841 | */ |
| 4842 | if (d->cc_next != 0 || |
| 4843 | (j > 0 && d[-1].cc_next != 0)) |
| 4844 | break_run = TRUE; |
| 4845 | |
| 4846 | if (!term->ucsdata->dbcs_screenfont && !dirty_line) { |
| 4847 | if (term->disptext[i]->chars[j].chr == tchar && |
| 4848 | (term->disptext[i]->chars[j].attr &~ DATTR_MASK) == tattr) |
| 4849 | break_run = TRUE; |
| 4850 | else if (!dirty_run && ccount == 1) |
| 4851 | break_run = TRUE; |
| 4852 | } |
| 4853 | |
| 4854 | if (break_run) { |
| 4855 | if ((dirty_run || last_run_dirty) && ccount > 0) { |
| 4856 | do_text(ctx, start, i, ch, ccount, attr, |
| 4857 | ldata->lattr); |
| 4858 | if (attr & (TATTR_ACTCURS | TATTR_PASCURS)) |
| 4859 | do_cursor(ctx, start, i, ch, ccount, attr, |
| 4860 | ldata->lattr); |
| 4861 | |
| 4862 | updated_line = 1; |
| 4863 | } |
| 4864 | start = j; |
| 4865 | ccount = 0; |
| 4866 | attr = tattr; |
| 4867 | cset = CSET_OF(tchar); |
| 4868 | if (term->ucsdata->dbcs_screenfont) |
| 4869 | last_run_dirty = dirty_run; |
| 4870 | dirty_run = dirty_line; |
| 4871 | } |
| 4872 | |
| 4873 | do_copy = FALSE; |
| 4874 | if (!termchars_equal_override(&term->disptext[i]->chars[j], |
| 4875 | d, tchar, tattr)) { |
| 4876 | do_copy = TRUE; |
| 4877 | dirty_run = TRUE; |
| 4878 | } |
| 4879 | |
| 4880 | if (ccount >= chlen) { |
| 4881 | chlen = ccount + 256; |
| 4882 | ch = sresize(ch, chlen, wchar_t); |
| 4883 | } |
| 4884 | ch[ccount++] = (wchar_t) tchar; |
| 4885 | |
| 4886 | if (d->cc_next) { |
| 4887 | termchar *dd = d; |
| 4888 | |
| 4889 | while (dd->cc_next) { |
| 4890 | unsigned long schar; |
| 4891 | |
| 4892 | dd += dd->cc_next; |
| 4893 | |
| 4894 | schar = dd->chr; |
| 4895 | switch (schar & CSET_MASK) { |
| 4896 | case CSET_ASCII: |
| 4897 | schar = term->ucsdata->unitab_line[schar & 0xFF]; |
| 4898 | break; |
| 4899 | case CSET_LINEDRW: |
| 4900 | schar = term->ucsdata->unitab_xterm[schar & 0xFF]; |
| 4901 | break; |
| 4902 | case CSET_SCOACS: |
| 4903 | schar = term->ucsdata->unitab_scoacs[schar&0xFF]; |
| 4904 | break; |
| 4905 | } |
| 4906 | |
| 4907 | if (ccount >= chlen) { |
| 4908 | chlen = ccount + 256; |
| 4909 | ch = sresize(ch, chlen, wchar_t); |
| 4910 | } |
| 4911 | ch[ccount++] = (wchar_t) schar; |
| 4912 | } |
| 4913 | |
| 4914 | attr |= TATTR_COMBINING; |
| 4915 | } |
| 4916 | |
| 4917 | if (do_copy) { |
| 4918 | copy_termchar(term->disptext[i], j, d); |
| 4919 | term->disptext[i]->chars[j].chr = tchar; |
| 4920 | term->disptext[i]->chars[j].attr = tattr; |
| 4921 | if (start == j) |
| 4922 | term->disptext[i]->chars[j].attr |= DATTR_STARTRUN; |
| 4923 | } |
| 4924 | |
| 4925 | /* If it's a wide char step along to the next one. */ |
| 4926 | if (tattr & ATTR_WIDE) { |
| 4927 | if (++j < term->cols) { |
| 4928 | d++; |
| 4929 | /* |
| 4930 | * By construction above, the cursor should not |
| 4931 | * be on the right-hand half of this character. |
| 4932 | * Ever. |
| 4933 | */ |
| 4934 | assert(!(i == our_curs_y && j == our_curs_x)); |
| 4935 | if (!termchars_equal(&term->disptext[i]->chars[j], d)) |
| 4936 | dirty_run = TRUE; |
| 4937 | copy_termchar(term->disptext[i], j, d); |
| 4938 | } |
| 4939 | } |
| 4940 | } |
| 4941 | if (dirty_run && ccount > 0) { |
| 4942 | do_text(ctx, start, i, ch, ccount, attr, |
| 4943 | ldata->lattr); |
| 4944 | if (attr & (TATTR_ACTCURS | TATTR_PASCURS)) |
| 4945 | do_cursor(ctx, start, i, ch, ccount, attr, |
| 4946 | ldata->lattr); |
| 4947 | |
| 4948 | updated_line = 1; |
| 4949 | } |
| 4950 | |
| 4951 | unlineptr(ldata); |
| 4952 | } |
| 4953 | |
| 4954 | sfree(newline); |
| 4955 | sfree(ch); |
| 4956 | } |
| 4957 | |
| 4958 | /* |
| 4959 | * Invalidate the whole screen so it will be repainted in full. |
| 4960 | */ |
| 4961 | void term_invalidate(Terminal *term) |
| 4962 | { |
| 4963 | int i, j; |
| 4964 | |
| 4965 | for (i = 0; i < term->rows; i++) |
| 4966 | for (j = 0; j < term->cols; j++) |
| 4967 | term->disptext[i]->chars[j].attr |= ATTR_INVALID; |
| 4968 | |
| 4969 | term_schedule_update(term); |
| 4970 | } |
| 4971 | |
| 4972 | /* |
| 4973 | * Paint the window in response to a WM_PAINT message. |
| 4974 | */ |
| 4975 | void term_paint(Terminal *term, Context ctx, |
| 4976 | int left, int top, int right, int bottom, int immediately) |
| 4977 | { |
| 4978 | int i, j; |
| 4979 | if (left < 0) left = 0; |
| 4980 | if (top < 0) top = 0; |
| 4981 | if (right >= term->cols) right = term->cols-1; |
| 4982 | if (bottom >= term->rows) bottom = term->rows-1; |
| 4983 | |
| 4984 | for (i = top; i <= bottom && i < term->rows; i++) { |
| 4985 | if ((term->disptext[i]->lattr & LATTR_MODE) == LATTR_NORM) |
| 4986 | for (j = left; j <= right && j < term->cols; j++) |
| 4987 | term->disptext[i]->chars[j].attr |= ATTR_INVALID; |
| 4988 | else |
| 4989 | for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++) |
| 4990 | term->disptext[i]->chars[j].attr |= ATTR_INVALID; |
| 4991 | } |
| 4992 | |
| 4993 | if (immediately) { |
| 4994 | do_paint (term, ctx, FALSE); |
| 4995 | } else { |
| 4996 | term_schedule_update(term); |
| 4997 | } |
| 4998 | } |
| 4999 | |
| 5000 | /* |
| 5001 | * Attempt to scroll the scrollback. The second parameter gives the |
| 5002 | * position we want to scroll to; the first is +1 to denote that |
| 5003 | * this position is relative to the beginning of the scrollback, -1 |
| 5004 | * to denote it is relative to the end, and 0 to denote that it is |
| 5005 | * relative to the current position. |
| 5006 | */ |
| 5007 | void term_scroll(Terminal *term, int rel, int where) |
| 5008 | { |
| 5009 | int sbtop = -sblines(term); |
| 5010 | #ifdef OPTIMISE_SCROLL |
| 5011 | int olddisptop = term->disptop; |
| 5012 | int shift; |
| 5013 | #endif /* OPTIMISE_SCROLL */ |
| 5014 | |
| 5015 | term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where; |
| 5016 | if (term->disptop < sbtop) |
| 5017 | term->disptop = sbtop; |
| 5018 | if (term->disptop > 0) |
| 5019 | term->disptop = 0; |
| 5020 | update_sbar(term); |
| 5021 | #ifdef OPTIMISE_SCROLL |
| 5022 | shift = (term->disptop - olddisptop); |
| 5023 | if (shift < term->rows && shift > -term->rows) |
| 5024 | scroll_display(term, 0, term->rows - 1, shift); |
| 5025 | #endif /* OPTIMISE_SCROLL */ |
| 5026 | term_update(term); |
| 5027 | } |
| 5028 | |
| 5029 | static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel) |
| 5030 | { |
| 5031 | wchar_t *workbuf; |
| 5032 | wchar_t *wbptr; /* where next char goes within workbuf */ |
| 5033 | int old_top_x; |
| 5034 | int wblen = 0; /* workbuf len */ |
| 5035 | int buflen; /* amount of memory allocated to workbuf */ |
| 5036 | |
| 5037 | buflen = 5120; /* Default size */ |
| 5038 | workbuf = snewn(buflen, wchar_t); |
| 5039 | wbptr = workbuf; /* start filling here */ |
| 5040 | old_top_x = top.x; /* needed for rect==1 */ |
| 5041 | |
| 5042 | while (poslt(top, bottom)) { |
| 5043 | int nl = FALSE; |
| 5044 | termline *ldata = lineptr(top.y); |
| 5045 | pos nlpos; |
| 5046 | |
| 5047 | /* |
| 5048 | * nlpos will point at the maximum position on this line we |
| 5049 | * should copy up to. So we start it at the end of the |
| 5050 | * line... |
| 5051 | */ |
| 5052 | nlpos.y = top.y; |
| 5053 | nlpos.x = term->cols; |
| 5054 | |
| 5055 | /* |
| 5056 | * ... move it backwards if there's unused space at the end |
| 5057 | * of the line (and also set `nl' if this is the case, |
| 5058 | * because in normal selection mode this means we need a |
| 5059 | * newline at the end)... |
| 5060 | */ |
| 5061 | if (!(ldata->lattr & LATTR_WRAPPED)) { |
| 5062 | while (IS_SPACE_CHR(ldata->chars[nlpos.x - 1].chr) && |
| 5063 | !ldata->chars[nlpos.x - 1].cc_next && |
| 5064 | poslt(top, nlpos)) |
| 5065 | decpos(nlpos); |
| 5066 | if (poslt(nlpos, bottom)) |
| 5067 | nl = TRUE; |
| 5068 | } else if (ldata->lattr & LATTR_WRAPPED2) { |
| 5069 | /* Ignore the last char on the line in a WRAPPED2 line. */ |
| 5070 | decpos(nlpos); |
| 5071 | } |
| 5072 | |
| 5073 | /* |
| 5074 | * ... and then clip it to the terminal x coordinate if |
| 5075 | * we're doing rectangular selection. (In this case we |
| 5076 | * still did the above, so that copying e.g. the right-hand |
| 5077 | * column from a table doesn't fill with spaces on the |
| 5078 | * right.) |
| 5079 | */ |
| 5080 | if (rect) { |
| 5081 | if (nlpos.x > bottom.x) |
| 5082 | nlpos.x = bottom.x; |
| 5083 | nl = (top.y < bottom.y); |
| 5084 | } |
| 5085 | |
| 5086 | while (poslt(top, bottom) && poslt(top, nlpos)) { |
| 5087 | #if 0 |
| 5088 | char cbuf[16], *p; |
| 5089 | sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF)); |
| 5090 | #else |
| 5091 | wchar_t cbuf[16], *p; |
| 5092 | int set, c; |
| 5093 | int x = top.x; |
| 5094 | |
| 5095 | if (ldata->chars[x].chr == UCSWIDE) { |
| 5096 | top.x++; |
| 5097 | continue; |
| 5098 | } |
| 5099 | |
| 5100 | while (1) { |
| 5101 | int uc = ldata->chars[x].chr; |
| 5102 | |
| 5103 | switch (uc & CSET_MASK) { |
| 5104 | case CSET_LINEDRW: |
| 5105 | if (!term->cfg.rawcnp) { |
| 5106 | uc = term->ucsdata->unitab_xterm[uc & 0xFF]; |
| 5107 | break; |
| 5108 | } |
| 5109 | case CSET_ASCII: |
| 5110 | uc = term->ucsdata->unitab_line[uc & 0xFF]; |
| 5111 | break; |
| 5112 | case CSET_SCOACS: |
| 5113 | uc = term->ucsdata->unitab_scoacs[uc&0xFF]; |
| 5114 | break; |
| 5115 | } |
| 5116 | switch (uc & CSET_MASK) { |
| 5117 | case CSET_ACP: |
| 5118 | uc = term->ucsdata->unitab_font[uc & 0xFF]; |
| 5119 | break; |
| 5120 | case CSET_OEMCP: |
| 5121 | uc = term->ucsdata->unitab_oemcp[uc & 0xFF]; |
| 5122 | break; |
| 5123 | } |
| 5124 | |
| 5125 | set = (uc & CSET_MASK); |
| 5126 | c = (uc & ~CSET_MASK); |
| 5127 | cbuf[0] = uc; |
| 5128 | cbuf[1] = 0; |
| 5129 | |
| 5130 | if (DIRECT_FONT(uc)) { |
| 5131 | if (c >= ' ' && c != 0x7F) { |
| 5132 | char buf[4]; |
| 5133 | WCHAR wbuf[4]; |
| 5134 | int rv; |
| 5135 | if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) { |
| 5136 | buf[0] = c; |
| 5137 | buf[1] = (char) (0xFF & ldata->chars[top.x + 1].chr); |
| 5138 | rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4); |
| 5139 | top.x++; |
| 5140 | } else { |
| 5141 | buf[0] = c; |
| 5142 | rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4); |
| 5143 | } |
| 5144 | |
| 5145 | if (rv > 0) { |
| 5146 | memcpy(cbuf, wbuf, rv * sizeof(wchar_t)); |
| 5147 | cbuf[rv] = 0; |
| 5148 | } |
| 5149 | } |
| 5150 | } |
| 5151 | #endif |
| 5152 | |
| 5153 | for (p = cbuf; *p; p++) { |
| 5154 | /* Enough overhead for trailing NL and nul */ |
| 5155 | if (wblen >= buflen - 16) { |
| 5156 | buflen += 100; |
| 5157 | workbuf = sresize(workbuf, buflen, wchar_t); |
| 5158 | wbptr = workbuf + wblen; |
| 5159 | } |
| 5160 | wblen++; |
| 5161 | *wbptr++ = *p; |
| 5162 | } |
| 5163 | |
| 5164 | if (ldata->chars[x].cc_next) |
| 5165 | x += ldata->chars[x].cc_next; |
| 5166 | else |
| 5167 | break; |
| 5168 | } |
| 5169 | top.x++; |
| 5170 | } |
| 5171 | if (nl) { |
| 5172 | int i; |
| 5173 | for (i = 0; i < sel_nl_sz; i++) { |
| 5174 | wblen++; |
| 5175 | *wbptr++ = sel_nl[i]; |
| 5176 | } |
| 5177 | } |
| 5178 | top.y++; |
| 5179 | top.x = rect ? old_top_x : 0; |
| 5180 | |
| 5181 | unlineptr(ldata); |
| 5182 | } |
| 5183 | #if SELECTION_NUL_TERMINATED |
| 5184 | wblen++; |
| 5185 | *wbptr++ = 0; |
| 5186 | #endif |
| 5187 | write_clip(term->frontend, workbuf, wblen, desel); /* transfer to clipbd */ |
| 5188 | if (buflen > 0) /* indicates we allocated this buffer */ |
| 5189 | sfree(workbuf); |
| 5190 | } |
| 5191 | |
| 5192 | void term_copyall(Terminal *term) |
| 5193 | { |
| 5194 | pos top; |
| 5195 | pos bottom; |
| 5196 | tree234 *screen = term->screen; |
| 5197 | top.y = -sblines(term); |
| 5198 | top.x = 0; |
| 5199 | bottom.y = find_last_nonempty_line(term, screen); |
| 5200 | bottom.x = term->cols; |
| 5201 | clipme(term, top, bottom, 0, TRUE); |
| 5202 | } |
| 5203 | |
| 5204 | /* |
| 5205 | * The wordness array is mainly for deciding the disposition of the |
| 5206 | * US-ASCII characters. |
| 5207 | */ |
| 5208 | static int wordtype(Terminal *term, int uc) |
| 5209 | { |
| 5210 | struct ucsword { |
| 5211 | int start, end, ctype; |
| 5212 | }; |
| 5213 | static const struct ucsword ucs_words[] = { |
| 5214 | { |
| 5215 | 128, 160, 0}, { |
| 5216 | 161, 191, 1}, { |
| 5217 | 215, 215, 1}, { |
| 5218 | 247, 247, 1}, { |
| 5219 | 0x037e, 0x037e, 1}, /* Greek question mark */ |
| 5220 | { |
| 5221 | 0x0387, 0x0387, 1}, /* Greek ano teleia */ |
| 5222 | { |
| 5223 | 0x055a, 0x055f, 1}, /* Armenian punctuation */ |
| 5224 | { |
| 5225 | 0x0589, 0x0589, 1}, /* Armenian full stop */ |
| 5226 | { |
| 5227 | 0x0700, 0x070d, 1}, /* Syriac punctuation */ |
| 5228 | { |
| 5229 | 0x104a, 0x104f, 1}, /* Myanmar punctuation */ |
| 5230 | { |
| 5231 | 0x10fb, 0x10fb, 1}, /* Georgian punctuation */ |
| 5232 | { |
| 5233 | 0x1361, 0x1368, 1}, /* Ethiopic punctuation */ |
| 5234 | { |
| 5235 | 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */ |
| 5236 | { |
| 5237 | 0x17d4, 0x17dc, 1}, /* Khmer punctuation */ |
| 5238 | { |
| 5239 | 0x1800, 0x180a, 1}, /* Mongolian punctuation */ |
| 5240 | { |
| 5241 | 0x2000, 0x200a, 0}, /* Various spaces */ |
| 5242 | { |
| 5243 | 0x2070, 0x207f, 2}, /* superscript */ |
| 5244 | { |
| 5245 | 0x2080, 0x208f, 2}, /* subscript */ |
| 5246 | { |
| 5247 | 0x200b, 0x27ff, 1}, /* punctuation and symbols */ |
| 5248 | { |
| 5249 | 0x3000, 0x3000, 0}, /* ideographic space */ |
| 5250 | { |
| 5251 | 0x3001, 0x3020, 1}, /* ideographic punctuation */ |
| 5252 | { |
| 5253 | 0x303f, 0x309f, 3}, /* Hiragana */ |
| 5254 | { |
| 5255 | 0x30a0, 0x30ff, 3}, /* Katakana */ |
| 5256 | { |
| 5257 | 0x3300, 0x9fff, 3}, /* CJK Ideographs */ |
| 5258 | { |
| 5259 | 0xac00, 0xd7a3, 3}, /* Hangul Syllables */ |
| 5260 | { |
| 5261 | 0xf900, 0xfaff, 3}, /* CJK Ideographs */ |
| 5262 | { |
| 5263 | 0xfe30, 0xfe6b, 1}, /* punctuation forms */ |
| 5264 | { |
| 5265 | 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */ |
| 5266 | { |
| 5267 | 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */ |
| 5268 | { |
| 5269 | 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */ |
| 5270 | { |
| 5271 | 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */ |
| 5272 | { |
| 5273 | 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */ |
| 5274 | { |
| 5275 | 0, 0, 0} |
| 5276 | }; |
| 5277 | const struct ucsword *wptr; |
| 5278 | |
| 5279 | switch (uc & CSET_MASK) { |
| 5280 | case CSET_LINEDRW: |
| 5281 | uc = term->ucsdata->unitab_xterm[uc & 0xFF]; |
| 5282 | break; |
| 5283 | case CSET_ASCII: |
| 5284 | uc = term->ucsdata->unitab_line[uc & 0xFF]; |
| 5285 | break; |
| 5286 | case CSET_SCOACS: |
| 5287 | uc = term->ucsdata->unitab_scoacs[uc&0xFF]; |
| 5288 | break; |
| 5289 | } |
| 5290 | switch (uc & CSET_MASK) { |
| 5291 | case CSET_ACP: |
| 5292 | uc = term->ucsdata->unitab_font[uc & 0xFF]; |
| 5293 | break; |
| 5294 | case CSET_OEMCP: |
| 5295 | uc = term->ucsdata->unitab_oemcp[uc & 0xFF]; |
| 5296 | break; |
| 5297 | } |
| 5298 | |
| 5299 | /* For DBCS fonts I can't do anything useful. Even this will sometimes |
| 5300 | * fail as there's such a thing as a double width space. :-( |
| 5301 | */ |
| 5302 | if (term->ucsdata->dbcs_screenfont && |
| 5303 | term->ucsdata->font_codepage == term->ucsdata->line_codepage) |
| 5304 | return (uc != ' '); |
| 5305 | |
| 5306 | if (uc < 0x80) |
| 5307 | return term->wordness[uc]; |
| 5308 | |
| 5309 | for (wptr = ucs_words; wptr->start; wptr++) { |
| 5310 | if (uc >= wptr->start && uc <= wptr->end) |
| 5311 | return wptr->ctype; |
| 5312 | } |
| 5313 | |
| 5314 | return 2; |
| 5315 | } |
| 5316 | |
| 5317 | /* |
| 5318 | * Spread the selection outwards according to the selection mode. |
| 5319 | */ |
| 5320 | static pos sel_spread_half(Terminal *term, pos p, int dir) |
| 5321 | { |
| 5322 | termline *ldata; |
| 5323 | short wvalue; |
| 5324 | int topy = -sblines(term); |
| 5325 | |
| 5326 | ldata = lineptr(p.y); |
| 5327 | |
| 5328 | switch (term->selmode) { |
| 5329 | case SM_CHAR: |
| 5330 | /* |
| 5331 | * In this mode, every character is a separate unit, except |
| 5332 | * for runs of spaces at the end of a non-wrapping line. |
| 5333 | */ |
| 5334 | if (!(ldata->lattr & LATTR_WRAPPED)) { |
| 5335 | termchar *q = ldata->chars + term->cols; |
| 5336 | while (q > ldata->chars && |
| 5337 | IS_SPACE_CHR(q[-1].chr) && !q[-1].cc_next) |
| 5338 | q--; |
| 5339 | if (q == ldata->chars + term->cols) |
| 5340 | q--; |
| 5341 | if (p.x >= q - ldata->chars) |
| 5342 | p.x = (dir == -1 ? q - ldata->chars : term->cols - 1); |
| 5343 | } |
| 5344 | break; |
| 5345 | case SM_WORD: |
| 5346 | /* |
| 5347 | * In this mode, the units are maximal runs of characters |
| 5348 | * whose `wordness' has the same value. |
| 5349 | */ |
| 5350 | wvalue = wordtype(term, UCSGET(ldata->chars, p.x)); |
| 5351 | if (dir == +1) { |
| 5352 | while (1) { |
| 5353 | int maxcols = (ldata->lattr & LATTR_WRAPPED2 ? |
| 5354 | term->cols-1 : term->cols); |
| 5355 | if (p.x < maxcols-1) { |
| 5356 | if (wordtype(term, UCSGET(ldata->chars, p.x+1)) == wvalue) |
| 5357 | p.x++; |
| 5358 | else |
| 5359 | break; |
| 5360 | } else { |
| 5361 | if (ldata->lattr & LATTR_WRAPPED) { |
| 5362 | termline *ldata2; |
| 5363 | ldata2 = lineptr(p.y+1); |
| 5364 | if (wordtype(term, UCSGET(ldata2->chars, 0)) |
| 5365 | == wvalue) { |
| 5366 | p.x = 0; |
| 5367 | p.y++; |
| 5368 | unlineptr(ldata); |
| 5369 | ldata = ldata2; |
| 5370 | } else { |
| 5371 | unlineptr(ldata2); |
| 5372 | break; |
| 5373 | } |
| 5374 | } else |
| 5375 | break; |
| 5376 | } |
| 5377 | } |
| 5378 | } else { |
| 5379 | while (1) { |
| 5380 | if (p.x > 0) { |
| 5381 | if (wordtype(term, UCSGET(ldata->chars, p.x-1)) == wvalue) |
| 5382 | p.x--; |
| 5383 | else |
| 5384 | break; |
| 5385 | } else { |
| 5386 | termline *ldata2; |
| 5387 | int maxcols; |
| 5388 | if (p.y <= topy) |
| 5389 | break; |
| 5390 | ldata2 = lineptr(p.y-1); |
| 5391 | maxcols = (ldata2->lattr & LATTR_WRAPPED2 ? |
| 5392 | term->cols-1 : term->cols); |
| 5393 | if (ldata2->lattr & LATTR_WRAPPED) { |
| 5394 | if (wordtype(term, UCSGET(ldata2->chars, maxcols-1)) |
| 5395 | == wvalue) { |
| 5396 | p.x = maxcols-1; |
| 5397 | p.y--; |
| 5398 | unlineptr(ldata); |
| 5399 | ldata = ldata2; |
| 5400 | } else { |
| 5401 | unlineptr(ldata2); |
| 5402 | break; |
| 5403 | } |
| 5404 | } else |
| 5405 | break; |
| 5406 | } |
| 5407 | } |
| 5408 | } |
| 5409 | break; |
| 5410 | case SM_LINE: |
| 5411 | /* |
| 5412 | * In this mode, every line is a unit. |
| 5413 | */ |
| 5414 | p.x = (dir == -1 ? 0 : term->cols - 1); |
| 5415 | break; |
| 5416 | } |
| 5417 | |
| 5418 | unlineptr(ldata); |
| 5419 | return p; |
| 5420 | } |
| 5421 | |
| 5422 | static void sel_spread(Terminal *term) |
| 5423 | { |
| 5424 | if (term->seltype == LEXICOGRAPHIC) { |
| 5425 | term->selstart = sel_spread_half(term, term->selstart, -1); |
| 5426 | decpos(term->selend); |
| 5427 | term->selend = sel_spread_half(term, term->selend, +1); |
| 5428 | incpos(term->selend); |
| 5429 | } |
| 5430 | } |
| 5431 | |
| 5432 | void term_do_paste(Terminal *term) |
| 5433 | { |
| 5434 | wchar_t *data; |
| 5435 | int len; |
| 5436 | |
| 5437 | get_clip(term->frontend, &data, &len); |
| 5438 | if (data && len > 0) { |
| 5439 | wchar_t *p, *q; |
| 5440 | |
| 5441 | term_seen_key_event(term); /* pasted data counts */ |
| 5442 | |
| 5443 | if (term->paste_buffer) |
| 5444 | sfree(term->paste_buffer); |
| 5445 | term->paste_pos = term->paste_hold = term->paste_len = 0; |
| 5446 | term->paste_buffer = snewn(len, wchar_t); |
| 5447 | |
| 5448 | p = q = data; |
| 5449 | while (p < data + len) { |
| 5450 | while (p < data + len && |
| 5451 | !(p <= data + len - sel_nl_sz && |
| 5452 | !memcmp(p, sel_nl, sizeof(sel_nl)))) |
| 5453 | p++; |
| 5454 | |
| 5455 | { |
| 5456 | int i; |
| 5457 | for (i = 0; i < p - q; i++) { |
| 5458 | term->paste_buffer[term->paste_len++] = q[i]; |
| 5459 | } |
| 5460 | } |
| 5461 | |
| 5462 | if (p <= data + len - sel_nl_sz && |
| 5463 | !memcmp(p, sel_nl, sizeof(sel_nl))) { |
| 5464 | term->paste_buffer[term->paste_len++] = '\015'; |
| 5465 | p += sel_nl_sz; |
| 5466 | } |
| 5467 | q = p; |
| 5468 | } |
| 5469 | |
| 5470 | /* Assume a small paste will be OK in one go. */ |
| 5471 | if (term->paste_len < 256) { |
| 5472 | if (term->ldisc) |
| 5473 | luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0); |
| 5474 | if (term->paste_buffer) |
| 5475 | sfree(term->paste_buffer); |
| 5476 | term->paste_buffer = 0; |
| 5477 | term->paste_pos = term->paste_hold = term->paste_len = 0; |
| 5478 | } |
| 5479 | } |
| 5480 | get_clip(term->frontend, NULL, NULL); |
| 5481 | } |
| 5482 | |
| 5483 | void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked, |
| 5484 | Mouse_Action a, int x, int y, int shift, int ctrl, int alt) |
| 5485 | { |
| 5486 | pos selpoint; |
| 5487 | termline *ldata; |
| 5488 | int raw_mouse = (term->xterm_mouse && |
| 5489 | !term->cfg.no_mouse_rep && |
| 5490 | !(term->cfg.mouse_override && shift)); |
| 5491 | int default_seltype; |
| 5492 | |
| 5493 | if (y < 0) { |
| 5494 | y = 0; |
| 5495 | if (a == MA_DRAG && !raw_mouse) |
| 5496 | term_scroll(term, 0, -1); |
| 5497 | } |
| 5498 | if (y >= term->rows) { |
| 5499 | y = term->rows - 1; |
| 5500 | if (a == MA_DRAG && !raw_mouse) |
| 5501 | term_scroll(term, 0, +1); |
| 5502 | } |
| 5503 | if (x < 0) { |
| 5504 | if (y > 0) { |
| 5505 | x = term->cols - 1; |
| 5506 | y--; |
| 5507 | } else |
| 5508 | x = 0; |
| 5509 | } |
| 5510 | if (x >= term->cols) |
| 5511 | x = term->cols - 1; |
| 5512 | |
| 5513 | selpoint.y = y + term->disptop; |
| 5514 | ldata = lineptr(selpoint.y); |
| 5515 | |
| 5516 | if ((ldata->lattr & LATTR_MODE) != LATTR_NORM) |
| 5517 | x /= 2; |
| 5518 | |
| 5519 | /* |
| 5520 | * Transform x through the bidi algorithm to find the _logical_ |
| 5521 | * click point from the physical one. |
| 5522 | */ |
| 5523 | if (term_bidi_line(term, ldata, y) != NULL) { |
| 5524 | x = term->post_bidi_cache[y].backward[x]; |
| 5525 | } |
| 5526 | |
| 5527 | selpoint.x = x; |
| 5528 | unlineptr(ldata); |
| 5529 | |
| 5530 | if (raw_mouse) { |
| 5531 | int encstate = 0, r, c; |
| 5532 | char abuf[16]; |
| 5533 | |
| 5534 | if (term->ldisc) { |
| 5535 | |
| 5536 | switch (braw) { |
| 5537 | case MBT_LEFT: |
| 5538 | encstate = 0x20; /* left button down */ |
| 5539 | break; |
| 5540 | case MBT_MIDDLE: |
| 5541 | encstate = 0x21; |
| 5542 | break; |
| 5543 | case MBT_RIGHT: |
| 5544 | encstate = 0x22; |
| 5545 | break; |
| 5546 | case MBT_WHEEL_UP: |
| 5547 | encstate = 0x60; |
| 5548 | break; |
| 5549 | case MBT_WHEEL_DOWN: |
| 5550 | encstate = 0x61; |
| 5551 | break; |
| 5552 | default: break; /* placate gcc warning about enum use */ |
| 5553 | } |
| 5554 | switch (a) { |
| 5555 | case MA_DRAG: |
| 5556 | if (term->xterm_mouse == 1) |
| 5557 | return; |
| 5558 | encstate += 0x20; |
| 5559 | break; |
| 5560 | case MA_RELEASE: |
| 5561 | encstate = 0x23; |
| 5562 | term->mouse_is_down = 0; |
| 5563 | break; |
| 5564 | case MA_CLICK: |
| 5565 | if (term->mouse_is_down == braw) |
| 5566 | return; |
| 5567 | term->mouse_is_down = braw; |
| 5568 | break; |
| 5569 | default: break; /* placate gcc warning about enum use */ |
| 5570 | } |
| 5571 | if (shift) |
| 5572 | encstate += 0x04; |
| 5573 | if (ctrl) |
| 5574 | encstate += 0x10; |
| 5575 | r = y + 33; |
| 5576 | c = x + 33; |
| 5577 | |
| 5578 | sprintf(abuf, "\033[M%c%c%c", encstate, c, r); |
| 5579 | ldisc_send(term->ldisc, abuf, 6, 0); |
| 5580 | } |
| 5581 | return; |
| 5582 | } |
| 5583 | |
| 5584 | /* |
| 5585 | * Set the selection type (rectangular or normal) at the start |
| 5586 | * of a selection attempt, from the state of Alt. |
| 5587 | */ |
| 5588 | if (!alt ^ !term->cfg.rect_select) |
| 5589 | default_seltype = RECTANGULAR; |
| 5590 | else |
| 5591 | default_seltype = LEXICOGRAPHIC; |
| 5592 | |
| 5593 | if (term->selstate == NO_SELECTION) { |
| 5594 | term->seltype = default_seltype; |
| 5595 | } |
| 5596 | |
| 5597 | if (bcooked == MBT_SELECT && a == MA_CLICK) { |
| 5598 | deselect(term); |
| 5599 | term->selstate = ABOUT_TO; |
| 5600 | term->seltype = default_seltype; |
| 5601 | term->selanchor = selpoint; |
| 5602 | term->selmode = SM_CHAR; |
| 5603 | } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) { |
| 5604 | deselect(term); |
| 5605 | term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE); |
| 5606 | term->selstate = DRAGGING; |
| 5607 | term->selstart = term->selanchor = selpoint; |
| 5608 | term->selend = term->selstart; |
| 5609 | incpos(term->selend); |
| 5610 | sel_spread(term); |
| 5611 | } else if ((bcooked == MBT_SELECT && a == MA_DRAG) || |
| 5612 | (bcooked == MBT_EXTEND && a != MA_RELEASE)) { |
| 5613 | if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint)) |
| 5614 | return; |
| 5615 | if (bcooked == MBT_EXTEND && a != MA_DRAG && |
| 5616 | term->selstate == SELECTED) { |
| 5617 | if (term->seltype == LEXICOGRAPHIC) { |
| 5618 | /* |
| 5619 | * For normal selection, we extend by moving |
| 5620 | * whichever end of the current selection is closer |
| 5621 | * to the mouse. |
| 5622 | */ |
| 5623 | if (posdiff(selpoint, term->selstart) < |
| 5624 | posdiff(term->selend, term->selstart) / 2) { |
| 5625 | term->selanchor = term->selend; |
| 5626 | decpos(term->selanchor); |
| 5627 | } else { |
| 5628 | term->selanchor = term->selstart; |
| 5629 | } |
| 5630 | } else { |
| 5631 | /* |
| 5632 | * For rectangular selection, we have a choice of |
| 5633 | * _four_ places to put selanchor and selpoint: the |
| 5634 | * four corners of the selection. |
| 5635 | */ |
| 5636 | if (2*selpoint.x < term->selstart.x + term->selend.x) |
| 5637 | term->selanchor.x = term->selend.x-1; |
| 5638 | else |
| 5639 | term->selanchor.x = term->selstart.x; |
| 5640 | |
| 5641 | if (2*selpoint.y < term->selstart.y + term->selend.y) |
| 5642 | term->selanchor.y = term->selend.y; |
| 5643 | else |
| 5644 | term->selanchor.y = term->selstart.y; |
| 5645 | } |
| 5646 | term->selstate = DRAGGING; |
| 5647 | } |
| 5648 | if (term->selstate != ABOUT_TO && term->selstate != DRAGGING) |
| 5649 | term->selanchor = selpoint; |
| 5650 | term->selstate = DRAGGING; |
| 5651 | if (term->seltype == LEXICOGRAPHIC) { |
| 5652 | /* |
| 5653 | * For normal selection, we set (selstart,selend) to |
| 5654 | * (selpoint,selanchor) in some order. |
| 5655 | */ |
| 5656 | if (poslt(selpoint, term->selanchor)) { |
| 5657 | term->selstart = selpoint; |
| 5658 | term->selend = term->selanchor; |
| 5659 | incpos(term->selend); |
| 5660 | } else { |
| 5661 | term->selstart = term->selanchor; |
| 5662 | term->selend = selpoint; |
| 5663 | incpos(term->selend); |
| 5664 | } |
| 5665 | } else { |
| 5666 | /* |
| 5667 | * For rectangular selection, we may need to |
| 5668 | * interchange x and y coordinates (if the user has |
| 5669 | * dragged in the -x and +y directions, or vice versa). |
| 5670 | */ |
| 5671 | term->selstart.x = min(term->selanchor.x, selpoint.x); |
| 5672 | term->selend.x = 1+max(term->selanchor.x, selpoint.x); |
| 5673 | term->selstart.y = min(term->selanchor.y, selpoint.y); |
| 5674 | term->selend.y = max(term->selanchor.y, selpoint.y); |
| 5675 | } |
| 5676 | sel_spread(term); |
| 5677 | } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) && |
| 5678 | a == MA_RELEASE) { |
| 5679 | if (term->selstate == DRAGGING) { |
| 5680 | /* |
| 5681 | * We've completed a selection. We now transfer the |
| 5682 | * data to the clipboard. |
| 5683 | */ |
| 5684 | clipme(term, term->selstart, term->selend, |
| 5685 | (term->seltype == RECTANGULAR), FALSE); |
| 5686 | term->selstate = SELECTED; |
| 5687 | } else |
| 5688 | term->selstate = NO_SELECTION; |
| 5689 | } else if (bcooked == MBT_PASTE |
| 5690 | && (a == MA_CLICK |
| 5691 | #if MULTICLICK_ONLY_EVENT |
| 5692 | || a == MA_2CLK || a == MA_3CLK |
| 5693 | #endif |
| 5694 | )) { |
| 5695 | request_paste(term->frontend); |
| 5696 | } |
| 5697 | |
| 5698 | term_update(term); |
| 5699 | } |
| 5700 | |
| 5701 | void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen, |
| 5702 | unsigned int modifiers, unsigned int flags) |
| 5703 | { |
| 5704 | char output[10]; |
| 5705 | char *p = output; |
| 5706 | int prependesc = FALSE; |
| 5707 | #if 0 |
| 5708 | int i; |
| 5709 | |
| 5710 | fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen); |
| 5711 | for (i = 0; i < tlen; i++) |
| 5712 | fprintf(stderr, " %04x", (unsigned)text[i]); |
| 5713 | fprintf(stderr, "\n"); |
| 5714 | #endif |
| 5715 | |
| 5716 | /* XXX Num Lock */ |
| 5717 | if ((flags & PKF_REPEAT) && term->repeat_off) |
| 5718 | return; |
| 5719 | |
| 5720 | /* Currently, Meta always just prefixes everything with ESC. */ |
| 5721 | if (modifiers & PKM_META) |
| 5722 | prependesc = TRUE; |
| 5723 | modifiers &= ~PKM_META; |
| 5724 | |
| 5725 | /* |
| 5726 | * Alt is only used for Alt+keypad, which isn't supported yet, so |
| 5727 | * ignore it. |
| 5728 | */ |
| 5729 | modifiers &= ~PKM_ALT; |
| 5730 | |
| 5731 | /* Standard local function keys */ |
| 5732 | switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) { |
| 5733 | case PKM_SHIFT: |
| 5734 | if (keysym == PK_PAGEUP) |
| 5735 | /* scroll up one page */; |
| 5736 | if (keysym == PK_PAGEDOWN) |
| 5737 | /* scroll down on page */; |
| 5738 | if (keysym == PK_INSERT) |
| 5739 | term_do_paste(term); |
| 5740 | break; |
| 5741 | case PKM_CONTROL: |
| 5742 | if (keysym == PK_PAGEUP) |
| 5743 | /* scroll up one line */; |
| 5744 | if (keysym == PK_PAGEDOWN) |
| 5745 | /* scroll down one line */; |
| 5746 | /* Control-Numlock for app-keypad mode switch */ |
| 5747 | if (keysym == PK_PF1) |
| 5748 | term->app_keypad_keys ^= 1; |
| 5749 | break; |
| 5750 | } |
| 5751 | |
| 5752 | if (modifiers & PKM_ALT) { |
| 5753 | /* Alt+F4 (close) */ |
| 5754 | /* Alt+Return (full screen) */ |
| 5755 | /* Alt+Space (system menu) */ |
| 5756 | } |
| 5757 | |
| 5758 | if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 && |
| 5759 | text[0] >= 0x20 && text[0] <= 0x7e) { |
| 5760 | /* ASCII chars + Control */ |
| 5761 | if ((text[0] >= 0x40 && text[0] <= 0x5f) || |
| 5762 | (text[0] >= 0x61 && text[0] <= 0x7a)) |
| 5763 | text[0] &= 0x1f; |
| 5764 | else { |
| 5765 | /* |
| 5766 | * Control-2 should return ^@ (0x00), Control-6 should return |
| 5767 | * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since |
| 5768 | * the DOS keyboard handling did it, and we have nothing better |
| 5769 | * to do with the key combo in question, we'll also map |
| 5770 | * Control-Backquote to ^\ (0x1C). |
| 5771 | */ |
| 5772 | switch (text[0]) { |
| 5773 | case ' ': text[0] = 0x00; break; |
| 5774 | case '-': text[0] = 0x1f; break; |
| 5775 | case '/': text[0] = 0x1f; break; |
| 5776 | case '2': text[0] = 0x00; break; |
| 5777 | case '3': text[0] = 0x1b; break; |
| 5778 | case '4': text[0] = 0x1c; break; |
| 5779 | case '5': text[0] = 0x1d; break; |
| 5780 | case '6': text[0] = 0x1e; break; |
| 5781 | case '7': text[0] = 0x1f; break; |
| 5782 | case '8': text[0] = 0x7f; break; |
| 5783 | case '`': text[0] = 0x1c; break; |
| 5784 | } |
| 5785 | } |
| 5786 | } |
| 5787 | |
| 5788 | /* Nethack keypad */ |
| 5789 | if (term->cfg.nethack_keypad) { |
| 5790 | char c = 0; |
| 5791 | switch (keysym) { |
| 5792 | case PK_KP1: c = 'b'; break; |
| 5793 | case PK_KP2: c = 'j'; break; |
| 5794 | case PK_KP3: c = 'n'; break; |
| 5795 | case PK_KP4: c = 'h'; break; |
| 5796 | case PK_KP5: c = '.'; break; |
| 5797 | case PK_KP6: c = 'l'; break; |
| 5798 | case PK_KP7: c = 'y'; break; |
| 5799 | case PK_KP8: c = 'k'; break; |
| 5800 | case PK_KP9: c = 'u'; break; |
| 5801 | default: break; /* else gcc warns `enum value not used' */ |
| 5802 | } |
| 5803 | if (c != 0) { |
| 5804 | if (c != '.') { |
| 5805 | if (modifiers & PKM_CONTROL) |
| 5806 | c &= 0x1f; |
| 5807 | else if (modifiers & PKM_SHIFT) |
| 5808 | c = toupper(c); |
| 5809 | } |
| 5810 | *p++ = c; |
| 5811 | goto done; |
| 5812 | } |
| 5813 | } |
| 5814 | |
| 5815 | /* Numeric Keypad */ |
| 5816 | if (PK_ISKEYPAD(keysym)) { |
| 5817 | int xkey = 0; |
| 5818 | |
| 5819 | /* |
| 5820 | * In VT400 mode, PFn always emits an escape sequence. In |
| 5821 | * Linux and tilde modes, this only happens in app keypad mode. |
| 5822 | */ |
| 5823 | if (term->cfg.funky_type == FUNKY_VT400 || |
| 5824 | ((term->cfg.funky_type == FUNKY_LINUX || |
| 5825 | term->cfg.funky_type == FUNKY_TILDE) && |
| 5826 | term->app_keypad_keys && !term->cfg.no_applic_k)) { |
| 5827 | switch (keysym) { |
| 5828 | case PK_PF1: xkey = 'P'; break; |
| 5829 | case PK_PF2: xkey = 'Q'; break; |
| 5830 | case PK_PF3: xkey = 'R'; break; |
| 5831 | case PK_PF4: xkey = 'S'; break; |
| 5832 | default: break; /* else gcc warns `enum value not used' */ |
| 5833 | } |
| 5834 | } |
| 5835 | if (term->app_keypad_keys && !term->cfg.no_applic_k) { |
| 5836 | switch (keysym) { |
| 5837 | case PK_KP0: xkey = 'p'; break; |
| 5838 | case PK_KP1: xkey = 'q'; break; |
| 5839 | case PK_KP2: xkey = 'r'; break; |
| 5840 | case PK_KP3: xkey = 's'; break; |
| 5841 | case PK_KP4: xkey = 't'; break; |
| 5842 | case PK_KP5: xkey = 'u'; break; |
| 5843 | case PK_KP6: xkey = 'v'; break; |
| 5844 | case PK_KP7: xkey = 'w'; break; |
| 5845 | case PK_KP8: xkey = 'x'; break; |
| 5846 | case PK_KP9: xkey = 'y'; break; |
| 5847 | case PK_KPDECIMAL: xkey = 'n'; break; |
| 5848 | case PK_KPENTER: xkey = 'M'; break; |
| 5849 | default: break; /* else gcc warns `enum value not used' */ |
| 5850 | } |
| 5851 | if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) { |
| 5852 | /* |
| 5853 | * xterm can't see the layout of the keypad, so it has |
| 5854 | * to rely on the X keysyms returned by the keys. |
| 5855 | * Hence, we look at the strings here, not the PuTTY |
| 5856 | * keysyms (which describe the layout). |
| 5857 | */ |
| 5858 | switch (text[0]) { |
| 5859 | case '+': |
| 5860 | if (modifiers & PKM_SHIFT) |
| 5861 | xkey = 'l'; |
| 5862 | else |
| 5863 | xkey = 'k'; |
| 5864 | break; |
| 5865 | case '/': xkey = 'o'; break; |
| 5866 | case '*': xkey = 'j'; break; |
| 5867 | case '-': xkey = 'm'; break; |
| 5868 | } |
| 5869 | } else { |
| 5870 | /* |
| 5871 | * In all other modes, we try to retain the layout of |
| 5872 | * the DEC keypad in application mode. |
| 5873 | */ |
| 5874 | switch (keysym) { |
| 5875 | case PK_KPBIGPLUS: |
| 5876 | /* This key covers the '-' and ',' keys on a VT220 */ |
| 5877 | if (modifiers & PKM_SHIFT) |
| 5878 | xkey = 'm'; /* VT220 '-' */ |
| 5879 | else |
| 5880 | xkey = 'l'; /* VT220 ',' */ |
| 5881 | break; |
| 5882 | case PK_KPMINUS: xkey = 'm'; break; |
| 5883 | case PK_KPCOMMA: xkey = 'l'; break; |
| 5884 | default: break; /* else gcc warns `enum value not used' */ |
| 5885 | } |
| 5886 | } |
| 5887 | } |
| 5888 | if (xkey) { |
| 5889 | if (term->vt52_mode) { |
| 5890 | if (xkey >= 'P' && xkey <= 'S') |
| 5891 | p += sprintf((char *) p, "\x1B%c", xkey); |
| 5892 | else |
| 5893 | p += sprintf((char *) p, "\x1B?%c", xkey); |
| 5894 | } else |
| 5895 | p += sprintf((char *) p, "\x1BO%c", xkey); |
| 5896 | goto done; |
| 5897 | } |
| 5898 | /* Not in application mode -- treat the number pad as arrow keys? */ |
| 5899 | if ((flags & PKF_NUMLOCK) == 0) { |
| 5900 | switch (keysym) { |
| 5901 | case PK_KP0: keysym = PK_INSERT; break; |
| 5902 | case PK_KP1: keysym = PK_END; break; |
| 5903 | case PK_KP2: keysym = PK_DOWN; break; |
| 5904 | case PK_KP3: keysym = PK_PAGEDOWN; break; |
| 5905 | case PK_KP4: keysym = PK_LEFT; break; |
| 5906 | case PK_KP5: keysym = PK_REST; break; |
| 5907 | case PK_KP6: keysym = PK_RIGHT; break; |
| 5908 | case PK_KP7: keysym = PK_HOME; break; |
| 5909 | case PK_KP8: keysym = PK_UP; break; |
| 5910 | case PK_KP9: keysym = PK_PAGEUP; break; |
| 5911 | default: break; /* else gcc warns `enum value not used' */ |
| 5912 | } |
| 5913 | } |
| 5914 | } |
| 5915 | |
| 5916 | /* Miscellaneous keys */ |
| 5917 | switch (keysym) { |
| 5918 | case PK_ESCAPE: |
| 5919 | *p++ = 0x1b; |
| 5920 | goto done; |
| 5921 | case PK_BACKSPACE: |
| 5922 | if (modifiers == 0) |
| 5923 | *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08); |
| 5924 | else if (modifiers == PKM_SHIFT) |
| 5925 | /* We do the opposite of what is configured */ |
| 5926 | *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F); |
| 5927 | else break; |
| 5928 | goto done; |
| 5929 | case PK_TAB: |
| 5930 | if (modifiers == 0) |
| 5931 | *p++ = 0x09; |
| 5932 | else if (modifiers == PKM_SHIFT) |
| 5933 | *p++ = 0x1B, *p++ = '[', *p++ = 'Z'; |
| 5934 | else break; |
| 5935 | goto done; |
| 5936 | /* XXX window.c has ctrl+shift+space sending 0xa0 */ |
| 5937 | case PK_PAUSE: |
| 5938 | if (modifiers == PKM_CONTROL) |
| 5939 | *p++ = 26; |
| 5940 | else break; |
| 5941 | goto done; |
| 5942 | case PK_RETURN: |
| 5943 | case PK_KPENTER: /* Odd keypad modes handled above */ |
| 5944 | if (modifiers == 0) { |
| 5945 | *p++ = 0x0d; |
| 5946 | if (term->cr_lf_return) |
| 5947 | *p++ = 0x0a; |
| 5948 | goto done; |
| 5949 | } |
| 5950 | default: break; /* else gcc warns `enum value not used' */ |
| 5951 | } |
| 5952 | |
| 5953 | /* SCO function keys and editing keys */ |
| 5954 | if (term->cfg.funky_type == FUNKY_SCO) { |
| 5955 | if (PK_ISFKEY(keysym) && keysym <= PK_F12) { |
| 5956 | static char const codes[] = |
| 5957 | "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{"; |
| 5958 | int index = keysym - PK_F1; |
| 5959 | |
| 5960 | if (modifiers & PKM_SHIFT) index += 12; |
| 5961 | if (modifiers & PKM_CONTROL) index += 24; |
| 5962 | p += sprintf((char *) p, "\x1B[%c", codes[index]); |
| 5963 | goto done; |
| 5964 | } |
| 5965 | if (PK_ISEDITING(keysym)) { |
| 5966 | int xkey = 0; |
| 5967 | |
| 5968 | switch (keysym) { |
| 5969 | case PK_DELETE: *p++ = 0x7f; goto done; |
| 5970 | case PK_HOME: xkey = 'H'; break; |
| 5971 | case PK_INSERT: xkey = 'L'; break; |
| 5972 | case PK_END: xkey = 'F'; break; |
| 5973 | case PK_PAGEUP: xkey = 'I'; break; |
| 5974 | case PK_PAGEDOWN: xkey = 'G'; break; |
| 5975 | default: break; /* else gcc warns `enum value not used' */ |
| 5976 | } |
| 5977 | p += sprintf((char *) p, "\x1B[%c", xkey); |
| 5978 | } |
| 5979 | } |
| 5980 | |
| 5981 | if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) { |
| 5982 | int code; |
| 5983 | |
| 5984 | if (term->cfg.funky_type == FUNKY_XTERM) { |
| 5985 | /* Xterm shuffles these keys, apparently. */ |
| 5986 | switch (keysym) { |
| 5987 | case PK_HOME: keysym = PK_INSERT; break; |
| 5988 | case PK_INSERT: keysym = PK_HOME; break; |
| 5989 | case PK_DELETE: keysym = PK_END; break; |
| 5990 | case PK_END: keysym = PK_PAGEUP; break; |
| 5991 | case PK_PAGEUP: keysym = PK_DELETE; break; |
| 5992 | case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break; |
| 5993 | default: break; /* else gcc warns `enum value not used' */ |
| 5994 | } |
| 5995 | } |
| 5996 | |
| 5997 | /* RXVT Home/End */ |
| 5998 | if (term->cfg.rxvt_homeend && |
| 5999 | (keysym == PK_HOME || keysym == PK_END)) { |
| 6000 | p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw"); |
| 6001 | goto done; |
| 6002 | } |
| 6003 | |
| 6004 | if (term->vt52_mode) { |
| 6005 | int xkey; |
| 6006 | |
| 6007 | /* |
| 6008 | * A real VT52 doesn't have these, and a VT220 doesn't |
| 6009 | * send anything for them in VT52 mode. |
| 6010 | */ |
| 6011 | switch (keysym) { |
| 6012 | case PK_HOME: xkey = 'H'; break; |
| 6013 | case PK_INSERT: xkey = 'L'; break; |
| 6014 | case PK_DELETE: xkey = 'M'; break; |
| 6015 | case PK_END: xkey = 'E'; break; |
| 6016 | case PK_PAGEUP: xkey = 'I'; break; |
| 6017 | case PK_PAGEDOWN: xkey = 'G'; break; |
| 6018 | default: xkey=0; break; /* else gcc warns `enum value not used'*/ |
| 6019 | } |
| 6020 | p += sprintf((char *) p, "\x1B%c", xkey); |
| 6021 | goto done; |
| 6022 | } |
| 6023 | |
| 6024 | switch (keysym) { |
| 6025 | case PK_HOME: code = 1; break; |
| 6026 | case PK_INSERT: code = 2; break; |
| 6027 | case PK_DELETE: code = 3; break; |
| 6028 | case PK_END: code = 4; break; |
| 6029 | case PK_PAGEUP: code = 5; break; |
| 6030 | case PK_PAGEDOWN: code = 6; break; |
| 6031 | default: code = 0; break; /* else gcc warns `enum value not used' */ |
| 6032 | } |
| 6033 | p += sprintf((char *) p, "\x1B[%d~", code); |
| 6034 | goto done; |
| 6035 | } |
| 6036 | |
| 6037 | if (PK_ISFKEY(keysym)) { |
| 6038 | /* Map Shift+F1-F10 to F11-F20 */ |
| 6039 | if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT)) |
| 6040 | keysym += 10; |
| 6041 | if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) && |
| 6042 | keysym <= PK_F14) { |
| 6043 | /* XXX This overrides the XTERM/VT52 mode below */ |
| 6044 | int offt = 0; |
| 6045 | if (keysym >= PK_F6) offt++; |
| 6046 | if (keysym >= PK_F12) offt++; |
| 6047 | p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c", |
| 6048 | 'P' + keysym - PK_F1 - offt); |
| 6049 | goto done; |
| 6050 | } |
| 6051 | if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) { |
| 6052 | p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1); |
| 6053 | goto done; |
| 6054 | } |
| 6055 | if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) { |
| 6056 | if (term->vt52_mode) |
| 6057 | p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1); |
| 6058 | else |
| 6059 | p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1); |
| 6060 | goto done; |
| 6061 | } |
| 6062 | p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1); |
| 6063 | goto done; |
| 6064 | } |
| 6065 | |
| 6066 | if (PK_ISCURSOR(keysym)) { |
| 6067 | int xkey; |
| 6068 | |
| 6069 | switch (keysym) { |
| 6070 | case PK_UP: xkey = 'A'; break; |
| 6071 | case PK_DOWN: xkey = 'B'; break; |
| 6072 | case PK_RIGHT: xkey = 'C'; break; |
| 6073 | case PK_LEFT: xkey = 'D'; break; |
| 6074 | case PK_REST: xkey = 'G'; break; /* centre key on number pad */ |
| 6075 | default: xkey = 0; break; /* else gcc warns `enum value not used' */ |
| 6076 | } |
| 6077 | if (term->vt52_mode) |
| 6078 | p += sprintf((char *) p, "\x1B%c", xkey); |
| 6079 | else { |
| 6080 | int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c); |
| 6081 | |
| 6082 | /* Useful mapping of Ctrl-arrows */ |
| 6083 | if (modifiers == PKM_CONTROL) |
| 6084 | app_flg = !app_flg; |
| 6085 | |
| 6086 | if (app_flg) |
| 6087 | p += sprintf((char *) p, "\x1BO%c", xkey); |
| 6088 | else |
| 6089 | p += sprintf((char *) p, "\x1B[%c", xkey); |
| 6090 | } |
| 6091 | goto done; |
| 6092 | } |
| 6093 | |
| 6094 | done: |
| 6095 | if (p > output || tlen > 0) { |
| 6096 | /* |
| 6097 | * Interrupt an ongoing paste. I'm not sure |
| 6098 | * this is sensible, but for the moment it's |
| 6099 | * preferable to having to faff about buffering |
| 6100 | * things. |
| 6101 | */ |
| 6102 | term_nopaste(term); |
| 6103 | |
| 6104 | /* |
| 6105 | * We need not bother about stdin backlogs |
| 6106 | * here, because in GUI PuTTY we can't do |
| 6107 | * anything about it anyway; there's no means |
| 6108 | * of asking Windows to hold off on KEYDOWN |
| 6109 | * messages. We _have_ to buffer everything |
| 6110 | * we're sent. |
| 6111 | */ |
| 6112 | term_seen_key_event(term); |
| 6113 | |
| 6114 | if (prependesc) { |
| 6115 | #if 0 |
| 6116 | fprintf(stderr, "sending ESC\n"); |
| 6117 | #endif |
| 6118 | ldisc_send(term->ldisc, "\x1b", 1, 1); |
| 6119 | } |
| 6120 | |
| 6121 | if (p > output) { |
| 6122 | #if 0 |
| 6123 | fprintf(stderr, "sending %d bytes:", p - output); |
| 6124 | for (i = 0; i < p - output; i++) |
| 6125 | fprintf(stderr, " %02x", output[i]); |
| 6126 | fprintf(stderr, "\n"); |
| 6127 | #endif |
| 6128 | ldisc_send(term->ldisc, output, p - output, 1); |
| 6129 | } else if (tlen > 0) { |
| 6130 | #if 0 |
| 6131 | fprintf(stderr, "sending %d unichars:", tlen); |
| 6132 | for (i = 0; i < tlen; i++) |
| 6133 | fprintf(stderr, " %04x", (unsigned) text[i]); |
| 6134 | fprintf(stderr, "\n"); |
| 6135 | #endif |
| 6136 | luni_send(term->ldisc, text, tlen, 1); |
| 6137 | } |
| 6138 | } |
| 6139 | } |
| 6140 | |
| 6141 | void term_nopaste(Terminal *term) |
| 6142 | { |
| 6143 | if (term->paste_len == 0) |
| 6144 | return; |
| 6145 | sfree(term->paste_buffer); |
| 6146 | term->paste_buffer = NULL; |
| 6147 | term->paste_len = 0; |
| 6148 | } |
| 6149 | |
| 6150 | int term_paste_pending(Terminal *term) |
| 6151 | { |
| 6152 | return term->paste_len != 0; |
| 6153 | } |
| 6154 | |
| 6155 | void term_paste(Terminal *term) |
| 6156 | { |
| 6157 | long now, paste_diff; |
| 6158 | |
| 6159 | if (term->paste_len == 0) |
| 6160 | return; |
| 6161 | |
| 6162 | /* Don't wait forever to paste */ |
| 6163 | if (term->paste_hold) { |
| 6164 | now = GETTICKCOUNT(); |
| 6165 | paste_diff = now - term->last_paste; |
| 6166 | if (paste_diff >= 0 && paste_diff < 450) |
| 6167 | return; |
| 6168 | } |
| 6169 | term->paste_hold = 0; |
| 6170 | |
| 6171 | while (term->paste_pos < term->paste_len) { |
| 6172 | int n = 0; |
| 6173 | while (n + term->paste_pos < term->paste_len) { |
| 6174 | if (term->paste_buffer[term->paste_pos + n++] == '\015') |
| 6175 | break; |
| 6176 | } |
| 6177 | if (term->ldisc) |
| 6178 | luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0); |
| 6179 | term->paste_pos += n; |
| 6180 | |
| 6181 | if (term->paste_pos < term->paste_len) { |
| 6182 | term->paste_hold = 1; |
| 6183 | return; |
| 6184 | } |
| 6185 | } |
| 6186 | sfree(term->paste_buffer); |
| 6187 | term->paste_buffer = NULL; |
| 6188 | term->paste_len = 0; |
| 6189 | } |
| 6190 | |
| 6191 | static void deselect(Terminal *term) |
| 6192 | { |
| 6193 | term->selstate = NO_SELECTION; |
| 6194 | term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0; |
| 6195 | } |
| 6196 | |
| 6197 | void term_deselect(Terminal *term) |
| 6198 | { |
| 6199 | deselect(term); |
| 6200 | term_update(term); |
| 6201 | } |
| 6202 | |
| 6203 | int term_ldisc(Terminal *term, int option) |
| 6204 | { |
| 6205 | if (option == LD_ECHO) |
| 6206 | return term->term_echoing; |
| 6207 | if (option == LD_EDIT) |
| 6208 | return term->term_editing; |
| 6209 | return FALSE; |
| 6210 | } |
| 6211 | |
| 6212 | int term_data(Terminal *term, int is_stderr, const char *data, int len) |
| 6213 | { |
| 6214 | bufchain_add(&term->inbuf, data, len); |
| 6215 | |
| 6216 | if (!term->in_term_out) { |
| 6217 | term->in_term_out = TRUE; |
| 6218 | term_reset_cblink(term); |
| 6219 | /* |
| 6220 | * During drag-selects, we do not process terminal input, |
| 6221 | * because the user will want the screen to hold still to |
| 6222 | * be selected. |
| 6223 | */ |
| 6224 | if (term->selstate != DRAGGING) |
| 6225 | term_out(term); |
| 6226 | term->in_term_out = FALSE; |
| 6227 | } |
| 6228 | |
| 6229 | /* |
| 6230 | * term_out() always completely empties inbuf. Therefore, |
| 6231 | * there's no reason at all to return anything other than zero |
| 6232 | * from this function, because there _can't_ be a question of |
| 6233 | * the remote side needing to wait until term_out() has cleared |
| 6234 | * a backlog. |
| 6235 | * |
| 6236 | * This is a slightly suboptimal way to deal with SSH-2 - in |
| 6237 | * principle, the window mechanism would allow us to continue |
| 6238 | * to accept data on forwarded ports and X connections even |
| 6239 | * while the terminal processing was going slowly - but we |
| 6240 | * can't do the 100% right thing without moving the terminal |
| 6241 | * processing into a separate thread, and that might hurt |
| 6242 | * portability. So we manage stdout buffering the old SSH-1 way: |
| 6243 | * if the terminal processing goes slowly, the whole SSH |
| 6244 | * connection stops accepting data until it's ready. |
| 6245 | * |
| 6246 | * In practice, I can't imagine this causing serious trouble. |
| 6247 | */ |
| 6248 | return 0; |
| 6249 | } |
| 6250 | |
| 6251 | void term_provide_logctx(Terminal *term, void *logctx) |
| 6252 | { |
| 6253 | term->logctx = logctx; |
| 6254 | } |
| 6255 | |
| 6256 | void term_set_focus(Terminal *term, int has_focus) |
| 6257 | { |
| 6258 | term->has_focus = has_focus; |
| 6259 | term_schedule_cblink(term); |
| 6260 | } |