| 1 | /* main.c */ |
| 2 | |
| 3 | /* Author: |
| 4 | * Steve Kirkendall |
| 5 | * 14407 SW Teal Blvd. #C |
| 6 | * Beaverton, OR 97005 |
| 7 | * kirkenda@cs.pdx.edu |
| 8 | */ |
| 9 | |
| 10 | |
| 11 | /* This file contains the main() function of vi */ |
| 12 | |
| 13 | /* HACK! bcc needs to disable use of precompiled headers for this file, |
| 14 | or else command line args will not be passed to elvis */ |
| 15 | #if __BORLANDC__ |
| 16 | #include "borland.h" |
| 17 | #endif |
| 18 | |
| 19 | #include "config.h" |
| 20 | #include <setjmp.h> |
| 21 | #include "vi.h" |
| 22 | |
| 23 | extern trapint(); /* defined below */ |
| 24 | extern char *getenv(); |
| 25 | jmp_buf jmpenv; |
| 26 | |
| 27 | #ifndef NO_DIGRAPH |
| 28 | static init_digraphs(); |
| 29 | #endif |
| 30 | |
| 31 | /*---------------------------------------------------------------------*/ |
| 32 | |
| 33 | #if AMIGA |
| 34 | # include "amiwild.c" |
| 35 | main (argc, argv) |
| 36 | #else |
| 37 | # if VMS |
| 38 | # include "vmswild.c" |
| 39 | main (argc, argv) |
| 40 | # else |
| 41 | void main(argc, argv) |
| 42 | # endif |
| 43 | #endif |
| 44 | int argc; |
| 45 | char *argv[]; |
| 46 | { |
| 47 | int i; |
| 48 | char *cmd = (char *)0; |
| 49 | char *err = (char *)0; |
| 50 | char *str; |
| 51 | char *tag = (char *)0; |
| 52 | |
| 53 | /* set mode to MODE_VI or MODE_EX depending on program name */ |
| 54 | switch (argv[0][strlen(argv[0]) - 1]) |
| 55 | { |
| 56 | case 'x': /* "ex" */ |
| 57 | mode = MODE_EX; |
| 58 | break; |
| 59 | |
| 60 | case 'w': /* "view" */ |
| 61 | mode = MODE_VI; |
| 62 | *o_readonly = TRUE; |
| 63 | break; |
| 64 | #ifndef NO_EXTENSIONS |
| 65 | case 't': /* "edit" or "input" */ |
| 66 | mode = MODE_VI; |
| 67 | *o_inputmode = TRUE; |
| 68 | break; |
| 69 | #endif |
| 70 | default: /* "vi" or "elvis" */ |
| 71 | mode = MODE_VI; |
| 72 | } |
| 73 | |
| 74 | #ifndef DEBUG |
| 75 | # ifdef SIGQUIT |
| 76 | /* normally, we ignore SIGQUIT. SIGINT is trapped later */ |
| 77 | signal(SIGQUIT, SIG_IGN); |
| 78 | # endif |
| 79 | #endif |
| 80 | |
| 81 | /* temporarily ignore SIGINT */ |
| 82 | signal(SIGINT, SIG_IGN); |
| 83 | |
| 84 | /* start curses */ |
| 85 | initscr(); |
| 86 | cbreak(); |
| 87 | noecho(); |
| 88 | scrollok(stdscr, TRUE); |
| 89 | |
| 90 | /* arrange for deadly signals to be caught */ |
| 91 | # ifdef SIGHUP |
| 92 | signal(SIGHUP, (void(*)()) deathtrap); |
| 93 | # endif |
| 94 | # ifndef DEBUG |
| 95 | # ifdef SIGILL |
| 96 | signal(SIGILL, (void(*)()) deathtrap); |
| 97 | # endif |
| 98 | # ifdef SIGBUS |
| 99 | signal(SIGBUS, (void(*)()) deathtrap); |
| 100 | # endif |
| 101 | # ifdef SIGSEGV |
| 102 | signal(SIGSEGV, (void(*)()) deathtrap); |
| 103 | # endif |
| 104 | # ifdef SIGSYS |
| 105 | signal(SIGSYS, (void(*)()) deathtrap); |
| 106 | # endif |
| 107 | # endif /* !DEBUG */ |
| 108 | # ifdef SIGPIPE |
| 109 | signal(SIGPIPE, (void(*)()) deathtrap); |
| 110 | # endif |
| 111 | # ifdef SIGTERM |
| 112 | signal(SIGTERM, (void(*)()) deathtrap); |
| 113 | # endif |
| 114 | # ifdef SIGUSR1 |
| 115 | signal(SIGUSR1, (void(*)()) deathtrap); |
| 116 | # endif |
| 117 | # ifdef SIGUSR2 |
| 118 | signal(SIGUSR2, (void(*)()) deathtrap); |
| 119 | # endif |
| 120 | |
| 121 | /* initialize the options - must be done after initscr(), so that |
| 122 | * we can alter LINES and COLS if necessary. |
| 123 | */ |
| 124 | initopts(); |
| 125 | |
| 126 | /* map the arrow keys. The KU,KD,KL,and KR variables correspond to |
| 127 | * the :ku=: (etc.) termcap capabilities. The variables are defined |
| 128 | * as part of the curses package. |
| 129 | */ |
| 130 | if (has_KU) mapkey(has_KU, "k", WHEN_VICMD|WHEN_INMV, "<Up>"); |
| 131 | if (has_KD) mapkey(has_KD, "j", WHEN_VICMD|WHEN_INMV, "<Down>"); |
| 132 | if (has_KL) mapkey(has_KL, "h", WHEN_VICMD|WHEN_INMV, "<Left>"); |
| 133 | if (has_KR) mapkey(has_KR, "l", WHEN_VICMD|WHEN_INMV, "<Right>"); |
| 134 | if (has_HM) mapkey(has_HM, "^", WHEN_VICMD|WHEN_INMV, "<Home>"); |
| 135 | if (has_EN) mapkey(has_EN, "$", WHEN_VICMD|WHEN_INMV, "<End>"); |
| 136 | if (has_PU) mapkey(has_PU, "\002", WHEN_VICMD|WHEN_INMV, "<PageUp>"); |
| 137 | if (has_PD) mapkey(has_PD, "\006", WHEN_VICMD|WHEN_INMV, "<PageDn>"); |
| 138 | if (has_KI) mapkey(has_KI, "i", WHEN_VICMD|WHEN_INMV, "<Insert>"); |
| 139 | #if MSDOS |
| 140 | # if RAINBOW |
| 141 | if (!strcmp("rainbow", o_term)) |
| 142 | { |
| 143 | mapkey("\033[1~", "/", WHEN_VICMD, "<Find>"); |
| 144 | mapkey("\033[3~", "x", WHEN_VICMD|WHEN_INMV, "<Remove>"); |
| 145 | mapkey("\033[4~", "v", WHEN_VICMD|WHEN_INMV, "<Select>"); |
| 146 | mapkey("\033[17~", ":sh\n", WHEN_VICMD, "<Intrpt>"); |
| 147 | mapkey("\033[19~", ":q\n", WHEN_VICMD, "<Cancel>"); |
| 148 | mapkey("\033[21~", "ZZ", WHEN_VICMD, "<Exit>"); |
| 149 | mapkey("\033[26~", "V", WHEN_VICMD|WHEN_INMV, "<AddlOp>"); |
| 150 | mapkey("\033[28~", "\\", WHEN_VICMD|WHEN_INMV, "<Help>"); |
| 151 | mapkey("\033[29~", "K", WHEN_VICMD|WHEN_INMV, "<Do>"); |
| 152 | } |
| 153 | else |
| 154 | # endif /* RAINBOW */ |
| 155 | { |
| 156 | mapkey("#S", "x", WHEN_VICMD|WHEN_INMV, "<Delete>"); |
| 157 | mapkey("#s", "B", WHEN_VICMD|WHEN_INMV, "^<Left>"); |
| 158 | mapkey("#t", "W", WHEN_VICMD|WHEN_INMV, "^<Right>"); |
| 159 | } |
| 160 | #else /* not MSDOS */ |
| 161 | # if COHERENT |
| 162 | mapkey("\033[P", "x", WHEN_VICMD|WHEN_INMV, "<Del>"); |
| 163 | # else |
| 164 | #if AMIGA |
| 165 | mapkey("\233?~", "\\", WHEN_VICMD|WHEN_INMV, "<Help>"); |
| 166 | #endif |
| 167 | |
| 168 | if (ERASEKEY != '\177') |
| 169 | { |
| 170 | mapkey("\177", "x", WHEN_VICMD|WHEN_INMV, "<Del>"); |
| 171 | } |
| 172 | # endif |
| 173 | #endif |
| 174 | |
| 175 | #ifndef NO_DIGRAPH |
| 176 | init_digraphs(); |
| 177 | #endif /* NO_DIGRAPH */ |
| 178 | |
| 179 | /* process any flags */ |
| 180 | for (i = 1; i < argc && *argv[i] == '-'; i++) |
| 181 | { |
| 182 | switch (argv[i][1]) |
| 183 | { |
| 184 | case 'R': /* readonly */ |
| 185 | *o_readonly = TRUE; |
| 186 | break; |
| 187 | |
| 188 | case 'L': |
| 189 | case 'r': /* recover */ |
| 190 | msg("Use the `elvisrecover` program to recover lost files"); |
| 191 | endmsgs(); |
| 192 | refresh(); |
| 193 | endwin(); |
| 194 | exit(0); |
| 195 | break; |
| 196 | |
| 197 | case 't': /* tag */ |
| 198 | if (argv[i][2]) |
| 199 | { |
| 200 | tag = argv[i] + 2; |
| 201 | } |
| 202 | else |
| 203 | { |
| 204 | tag = argv[++i]; |
| 205 | } |
| 206 | break; |
| 207 | |
| 208 | case 'v': /* vi mode */ |
| 209 | mode = MODE_VI; |
| 210 | break; |
| 211 | |
| 212 | case 'e': /* ex mode */ |
| 213 | mode = MODE_EX; |
| 214 | break; |
| 215 | #ifndef NO_EXTENSIONS |
| 216 | case 'i': /* input mode */ |
| 217 | *o_inputmode = TRUE; |
| 218 | break; |
| 219 | #endif |
| 220 | #ifndef NO_ERRLIST |
| 221 | case 'm': /* use "errlist" as the errlist */ |
| 222 | if (argv[i][2]) |
| 223 | { |
| 224 | err = argv[i] + 2; |
| 225 | } |
| 226 | else if (i + 1 < argc) |
| 227 | { |
| 228 | err = argv[++i]; |
| 229 | } |
| 230 | else |
| 231 | { |
| 232 | err = ""; |
| 233 | } |
| 234 | break; |
| 235 | #endif |
| 236 | #ifndef CRUNCH |
| 237 | case 'c': /* run the following command, later */ |
| 238 | if (argv[i][2]) |
| 239 | { |
| 240 | cmd = argv[i] + 2; |
| 241 | } |
| 242 | else |
| 243 | { |
| 244 | cmd = argv[++i]; |
| 245 | } |
| 246 | break; |
| 247 | |
| 248 | case 'w': /* set the window size */ |
| 249 | if (argv[i][2]) |
| 250 | { |
| 251 | *o_window = atoi(argv[i] + 2); |
| 252 | wset = TRUE; |
| 253 | } |
| 254 | else |
| 255 | { |
| 256 | *o_window = atoi(argv[++i]); |
| 257 | wset = TRUE; |
| 258 | } |
| 259 | break; |
| 260 | #endif |
| 261 | default: |
| 262 | msg("Ignoring unknown flag \"%s\"", argv[i]); |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | /* if we were given an initial ex command, save it... */ |
| 267 | if (i < argc && *argv[i] == '+') |
| 268 | { |
| 269 | if (argv[i][1]) |
| 270 | { |
| 271 | cmd = argv[i++] + 1; |
| 272 | } |
| 273 | else |
| 274 | { |
| 275 | cmd = "$"; /* "vi + file" means start at EOF */ |
| 276 | i++; |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | /* the remaining args are file names. */ |
| 281 | if (i < argc) |
| 282 | { |
| 283 | strcpy(args, argv[i]); |
| 284 | while (++i < argc && strlen(args) + 1 + strlen(argv[i]) < sizeof args) |
| 285 | { |
| 286 | strcat(args, " "); |
| 287 | strcat(args, argv[i]); |
| 288 | } |
| 289 | #if MSDOS || TOS |
| 290 | /* expand wildcard characters, if necessary */ |
| 291 | if (strchr(args, '*') || strchr(args, '?')) |
| 292 | { |
| 293 | strcpy(args, wildcard(args)); |
| 294 | } |
| 295 | #endif |
| 296 | strcpy(tmpblk.c, args); |
| 297 | cmd_args(MARK_UNSET, MARK_UNSET, CMD_ARGS, TRUE, tmpblk.c); |
| 298 | } |
| 299 | else |
| 300 | { |
| 301 | /* empty args list */ |
| 302 | args[0] = '\0'; |
| 303 | nargs = 1; |
| 304 | argno = -1; |
| 305 | } |
| 306 | |
| 307 | /* perform the .exrc files and EXINIT environment variable */ |
| 308 | #ifdef SYSEXRC |
| 309 | doexrc(SYSEXRC); |
| 310 | #endif |
| 311 | #ifdef HMEXRC |
| 312 | str = getenv("HOME"); |
| 313 | if (str && *str) |
| 314 | { |
| 315 | strcpy(tmpblk.c, str); |
| 316 | str = tmpblk.c + strlen(tmpblk.c); |
| 317 | #if !VMS |
| 318 | # if AMIGA /* Don't SLASH a device. "Elvis:.exrc" */ |
| 319 | if (str[-1] != COLON && str[-1] != SLASH) |
| 320 | # else |
| 321 | if (str[-1] != SLASH) |
| 322 | # endif |
| 323 | { |
| 324 | *str++ = SLASH; |
| 325 | } |
| 326 | #endif |
| 327 | strcpy(str, HMEXRC); |
| 328 | doexrc(tmpblk.c); |
| 329 | } |
| 330 | #endif |
| 331 | #ifndef CRUNCH |
| 332 | if (*o_exrc) |
| 333 | #endif |
| 334 | { |
| 335 | doexrc(EXRC); |
| 336 | } |
| 337 | #ifdef EXINIT |
| 338 | str = getenv(EXINIT); |
| 339 | if (str) |
| 340 | { |
| 341 | exstring(str, strlen(str), ctrl('V')); |
| 342 | } |
| 343 | #endif |
| 344 | |
| 345 | /* search for a tag (or an error) now, if desired */ |
| 346 | blkinit(); |
| 347 | if (tag) |
| 348 | { |
| 349 | cmd_tag(MARK_FIRST, MARK_FIRST, CMD_TAG, 0, tag); |
| 350 | } |
| 351 | #ifndef NO_ERRLIST |
| 352 | else if (err) |
| 353 | { |
| 354 | cmd_errlist(MARK_FIRST, MARK_FIRST, CMD_ERRLIST, 0, err); |
| 355 | } |
| 356 | #endif |
| 357 | |
| 358 | /* if no tag/err, or tag failed, then start with first arg */ |
| 359 | if (tmpfd < 0) |
| 360 | { |
| 361 | /* start with first arg */ |
| 362 | cmd_next(MARK_UNSET, MARK_UNSET, CMD_NEXT, FALSE, ""); |
| 363 | |
| 364 | /* pretend to do something, just to force a recoverable |
| 365 | * version of the file out to disk |
| 366 | */ |
| 367 | ChangeText |
| 368 | { |
| 369 | } |
| 370 | clrflag(file, MODIFIED); |
| 371 | } |
| 372 | |
| 373 | /* now we do the immediate ex command that we noticed before */ |
| 374 | if (cmd) |
| 375 | { |
| 376 | doexcmd(cmd); |
| 377 | } |
| 378 | |
| 379 | /* repeatedly call ex() or vi() (depending on the mode) until the |
| 380 | * mode is set to MODE_QUIT |
| 381 | */ |
| 382 | while (mode != MODE_QUIT) |
| 383 | { |
| 384 | if (setjmp(jmpenv)) |
| 385 | { |
| 386 | /* Maybe we just aborted a change? */ |
| 387 | abortdo(); |
| 388 | } |
| 389 | signal(SIGINT, (void(*)()) trapint); |
| 390 | |
| 391 | switch (mode) |
| 392 | { |
| 393 | case MODE_VI: |
| 394 | vi(); |
| 395 | break; |
| 396 | |
| 397 | case MODE_EX: |
| 398 | ex(); |
| 399 | break; |
| 400 | #ifdef DEBUG |
| 401 | default: |
| 402 | msg("mode = %d?", mode); |
| 403 | mode = MODE_QUIT; |
| 404 | #endif |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | /* free up the cut buffers */ |
| 409 | cutend(); |
| 410 | |
| 411 | /* end curses */ |
| 412 | #ifndef NO_CURSORSHAPE |
| 413 | if (has_CQ) |
| 414 | do_CQ(); |
| 415 | #endif |
| 416 | endmsgs(); |
| 417 | move(LINES - 1, 0); |
| 418 | clrtoeol(); |
| 419 | refresh(); |
| 420 | endwin(); |
| 421 | |
| 422 | exit(0); |
| 423 | /*NOTREACHED*/ |
| 424 | } |
| 425 | |
| 426 | |
| 427 | /*ARGSUSED*/ |
| 428 | int trapint(signo) |
| 429 | int signo; |
| 430 | { |
| 431 | beep(); |
| 432 | resume_curses(FALSE); |
| 433 | abortdo(); |
| 434 | #if OSK |
| 435 | sigmask(-1); |
| 436 | #endif |
| 437 | #if TURBOC || __GNUC__ |
| 438 | signal(signo, (void (*)())trapint); |
| 439 | #else |
| 440 | signal(signo, trapint); |
| 441 | #endif |
| 442 | doingglobal = FALSE; |
| 443 | |
| 444 | longjmp(jmpenv, 1); |
| 445 | |
| 446 | return 0; |
| 447 | } |
| 448 | |
| 449 | |
| 450 | |
| 451 | #ifndef NO_DIGRAPH |
| 452 | |
| 453 | /* This stuff us used to build the default digraphs table. */ |
| 454 | static char digtable[][4] = |
| 455 | { |
| 456 | # ifdef CS_IBMPC |
| 457 | "C,\200", "u\"\1", "e'\2", "a^\3", |
| 458 | "a\"\4", "a`\5", "a@\6", "c,\7", |
| 459 | "e^\10", "e\"\211", "e`\12", "i\"\13", |
| 460 | "i^\14", "i`\15", "A\"\16", "A@\17", |
| 461 | "E'\20", "ae\21", "AE\22", "o^\23", |
| 462 | "o\"\24", "o`\25", "u^\26", "u`\27", |
| 463 | "y\"\30", "O\"\31", "U\"\32", "a'\240", |
| 464 | "i'!", "o'\"", "u'#", "n~$", |
| 465 | "N~%", "a-&", "o-'", "~?(", |
| 466 | "~!-", "\"<.", "\">/", |
| 467 | # ifdef CS_SPECIAL |
| 468 | "2/+", "4/,", "^+;", "^q<", |
| 469 | "^c=", "^r>", "^t?", "pp]", |
| 470 | "^^^", "oo_", "*a`", "*ba", |
| 471 | "*pc", "*Sd", "*se", "*uf", |
| 472 | "*tg", "*Ph", "*Ti", "*Oj", |
| 473 | "*dk", "*Hl", "*hm", "*En", |
| 474 | "*No", "eqp", "pmq", "ger", |
| 475 | "les", "*It", "*iu", "*/v", |
| 476 | "*=w", "sq{", "^n|", "^2}", |
| 477 | "^3~", "^_\377", |
| 478 | # endif /* CS_SPECIAL */ |
| 479 | # endif /* CS_IBMPC */ |
| 480 | # ifdef CS_LATIN1 |
| 481 | "~!!", "a-*", "\">+", "o-:", |
| 482 | "\"<>", "~??", |
| 483 | |
| 484 | "A`@", "A'A", "A^B", "A~C", |
| 485 | "A\"D", "A@E", "AEF", "C,G", |
| 486 | "E`H", "E'I", "E^J", "E\"K", |
| 487 | "I`L", "I'M", "I^N", "I\"O", |
| 488 | "-DP", "N~Q", "O`R", "O'S", |
| 489 | "O^T", "O~U", "O\"V", "O/X", |
| 490 | "U`Y", "U'Z", "U^[", "U\"\\", |
| 491 | "Y'_", |
| 492 | |
| 493 | "a``", "a'a", "a^b", "a~c", |
| 494 | "a\"d", "a@e", "aef", "c,g", |
| 495 | "e`h", "e'i", "e^j", "e\"k", |
| 496 | "i`l", "i'm", "i^n", "i\"o", |
| 497 | "-dp", "n~q", "o`r", "o's", |
| 498 | "o^t", "o~u", "o\"v", "o/x", |
| 499 | "u`y", "u'z", "u^{", "u\"|", |
| 500 | "y'~", |
| 501 | # endif /* CS_LATIN1 */ |
| 502 | "" |
| 503 | }; |
| 504 | |
| 505 | static init_digraphs() |
| 506 | { |
| 507 | int i; |
| 508 | |
| 509 | for (i = 0; *digtable[i]; i++) |
| 510 | { |
| 511 | do_digraph(FALSE, digtable[i]); |
| 512 | } |
| 513 | do_digraph(FALSE, (char *)0); |
| 514 | return 0; |
| 515 | } |
| 516 | #endif /* NO_DIGRAPH */ |