| 1 | /* ex.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 code for reading ex commands. */ |
| 12 | |
| 13 | #include "config.h" |
| 14 | #include "ctype.h" |
| 15 | #include "vi.h" |
| 16 | |
| 17 | /* This data type is used to describe the possible argument combinations */ |
| 18 | typedef short ARGT; |
| 19 | #define FROM 1 /* allow a linespec */ |
| 20 | #define TO 2 /* allow a second linespec */ |
| 21 | #define BANG 4 /* allow a ! after the command name */ |
| 22 | #define EXTRA 8 /* allow extra args after command name */ |
| 23 | #define XFILE 16 /* expand wildcards in extra part */ |
| 24 | #define NOSPC 32 /* no spaces allowed in the extra part */ |
| 25 | #define DFLALL 64 /* default file range is 1,$ */ |
| 26 | #define DFLNONE 128 /* no default file range */ |
| 27 | #define NODFL 256 /* do not default to the current file name */ |
| 28 | #define EXRCOK 512 /* can be in a .exrc file */ |
| 29 | #define NL 1024 /* if mode!=MODE_EX, then write a newline first */ |
| 30 | #define PLUS 2048 /* allow a line number, as in ":e +32 foo" */ |
| 31 | #define ZERO 4096 /* allow 0 to be given as a line number */ |
| 32 | #define NOBAR 8192 /* treat following '|' chars as normal */ |
| 33 | #define FILES (XFILE + EXTRA) /* multiple extra files allowed */ |
| 34 | #define WORD1 (EXTRA + NOSPC) /* one extra word allowed */ |
| 35 | #define FILE1 (FILES + NOSPC) /* 1 file allowed, defaults to current file */ |
| 36 | #define NAMEDF (FILE1 + NODFL) /* 1 file allowed, defaults to "" */ |
| 37 | #define NAMEDFS (FILES + NODFL) /* multiple files allowed, default is "" */ |
| 38 | #define RANGE (FROM + TO) /* range of linespecs allowed */ |
| 39 | #define NONE 0 /* no args allowed at all */ |
| 40 | |
| 41 | /* This array maps ex command names to command codes. The order in which |
| 42 | * command names are listed below is significant -- ambiguous abbreviations |
| 43 | * are always resolved to be the first possible match. (e.g. "r" is taken |
| 44 | * to mean "read", not "rewind", because "read" comes before "rewind") |
| 45 | */ |
| 46 | static struct |
| 47 | { |
| 48 | char *name; /* name of the command */ |
| 49 | CMD code; /* enum code of the command */ |
| 50 | void (*fn)();/* function which executes the command */ |
| 51 | ARGT argt; /* command line arguments permitted/needed/used */ |
| 52 | } |
| 53 | cmdnames[] = |
| 54 | { /* cmd name cmd code function arguments */ |
| 55 | {"append", CMD_APPEND, cmd_append, FROM+ZERO+BANG }, |
| 56 | #ifdef DEBUG |
| 57 | {"bug", CMD_DEBUG, cmd_debug, RANGE+BANG+EXTRA+NL}, |
| 58 | #endif |
| 59 | {"change", CMD_CHANGE, cmd_append, RANGE+BANG }, |
| 60 | {"delete", CMD_DELETE, cmd_delete, RANGE+WORD1 }, |
| 61 | {"edit", CMD_EDIT, cmd_edit, BANG+FILE1+PLUS }, |
| 62 | {"file", CMD_FILE, cmd_file, NAMEDF }, |
| 63 | {"global", CMD_GLOBAL, cmd_global, RANGE+BANG+EXTRA+DFLALL+NOBAR}, |
| 64 | {"insert", CMD_INSERT, cmd_append, FROM+BANG }, |
| 65 | {"join", CMD_INSERT, cmd_join, RANGE+BANG }, |
| 66 | {"k", CMD_MARK, cmd_mark, FROM+WORD1 }, |
| 67 | {"list", CMD_LIST, cmd_print, RANGE+NL }, |
| 68 | {"move", CMD_MOVE, cmd_move, RANGE+EXTRA }, |
| 69 | {"next", CMD_NEXT, cmd_next, BANG+NAMEDFS }, |
| 70 | {"Next", CMD_PREVIOUS, cmd_next, BANG }, |
| 71 | {"print", CMD_PRINT, cmd_print, RANGE+NL }, |
| 72 | {"quit", CMD_QUIT, cmd_xit, BANG }, |
| 73 | {"read", CMD_READ, cmd_read, FROM+ZERO+NAMEDF}, |
| 74 | {"substitute", CMD_SUBSTITUTE, cmd_substitute, RANGE+EXTRA }, |
| 75 | {"to", CMD_COPY, cmd_move, RANGE+EXTRA }, |
| 76 | {"undo", CMD_UNDO, cmd_undo, NONE }, |
| 77 | {"vglobal", CMD_VGLOBAL, cmd_global, RANGE+EXTRA+DFLALL+NOBAR}, |
| 78 | {"write", CMD_WRITE, cmd_write, RANGE+BANG+FILE1+DFLALL}, |
| 79 | {"xit", CMD_XIT, cmd_xit, BANG+NL }, |
| 80 | {"yank", CMD_YANK, cmd_delete, RANGE+WORD1 }, |
| 81 | |
| 82 | {"!", CMD_BANG, cmd_shell, EXRCOK+RANGE+NAMEDFS+DFLNONE+NL+NOBAR}, |
| 83 | {"#", CMD_NUMBER, cmd_print, RANGE+NL }, |
| 84 | {"<", CMD_SHIFTL, cmd_shift, RANGE }, |
| 85 | {">", CMD_SHIFTR, cmd_shift, RANGE }, |
| 86 | {"=", CMD_EQUAL, cmd_file, RANGE }, |
| 87 | {"&", CMD_SUBAGAIN, cmd_substitute, RANGE }, |
| 88 | #ifndef NO_AT |
| 89 | {"@", CMD_AT, cmd_at, EXTRA }, |
| 90 | #endif |
| 91 | |
| 92 | #ifndef NO_ABBR |
| 93 | {"abbreviate", CMD_ABBR, cmd_map, EXRCOK+BANG+EXTRA}, |
| 94 | #endif |
| 95 | {"args", CMD_ARGS, cmd_args, EXRCOK+NAMEDFS }, |
| 96 | #ifndef NO_ERRLIST |
| 97 | {"cc", CMD_CC, cmd_make, BANG+FILES }, |
| 98 | #endif |
| 99 | {"cd", CMD_CD, cmd_cd, EXRCOK+BANG+NAMEDF}, |
| 100 | {"copy", CMD_COPY, cmd_move, RANGE+EXTRA }, |
| 101 | #ifndef NO_DIGRAPH |
| 102 | {"digraph", CMD_DIGRAPH, cmd_digraph, EXRCOK+BANG+EXTRA}, |
| 103 | #endif |
| 104 | #ifndef NO_ERRLIST |
| 105 | {"errlist", CMD_ERRLIST, cmd_errlist, BANG+NAMEDF }, |
| 106 | #endif |
| 107 | {"ex", CMD_EDIT, cmd_edit, BANG+FILE1 }, |
| 108 | {"mark", CMD_MARK, cmd_mark, FROM+WORD1 }, |
| 109 | #ifndef NO_MKEXRC |
| 110 | {"mkexrc", CMD_MKEXRC, cmd_mkexrc, NAMEDF }, |
| 111 | #endif |
| 112 | {"number", CMD_NUMBER, cmd_print, RANGE+NL }, |
| 113 | {"put", CMD_PUT, cmd_put, FROM+ZERO+WORD1 }, |
| 114 | {"set", CMD_SET, cmd_set, EXRCOK+EXTRA }, |
| 115 | {"shell", CMD_SHELL, cmd_shell, NL }, |
| 116 | {"source", CMD_SOURCE, cmd_source, EXRCOK+NAMEDF }, |
| 117 | #ifdef SIGTSTP |
| 118 | {"stop", CMD_STOP, cmd_suspend, NONE }, |
| 119 | #endif |
| 120 | {"tag", CMD_TAG, cmd_tag, BANG+WORD1 }, |
| 121 | {"version", CMD_VERSION, cmd_version, EXRCOK+NONE }, |
| 122 | {"visual", CMD_VISUAL, cmd_edit, BANG+NAMEDF }, |
| 123 | {"wq", CMD_WQUIT, cmd_xit, NL }, |
| 124 | |
| 125 | #ifdef DEBUG |
| 126 | {"debug", CMD_DEBUG, cmd_debug, RANGE+BANG+EXTRA+NL}, |
| 127 | {"validate", CMD_VALIDATE, cmd_validate, BANG+NL }, |
| 128 | #endif |
| 129 | {"chdir", CMD_CD, cmd_cd, EXRCOK+BANG+NAMEDF}, |
| 130 | #ifndef NO_COLOR |
| 131 | {"color", CMD_COLOR, cmd_color, EXRCOK+EXTRA }, |
| 132 | #endif |
| 133 | #ifndef NO_ERRLIST |
| 134 | {"make", CMD_MAKE, cmd_make, BANG+NAMEDFS }, |
| 135 | #endif |
| 136 | {"map", CMD_MAP, cmd_map, EXRCOK+BANG+EXTRA}, |
| 137 | {"previous", CMD_PREVIOUS, cmd_next, BANG }, |
| 138 | {"rewind", CMD_REWIND, cmd_next, BANG }, |
| 139 | #ifdef SIGTSTP |
| 140 | {"suspend", CMD_SUSPEND, cmd_suspend, NONE }, |
| 141 | #endif |
| 142 | {"unmap", CMD_UNMAP, cmd_map, EXRCOK+BANG+EXTRA}, |
| 143 | #ifndef NO_ABBR |
| 144 | {"unabbreviate",CMD_UNABBR, cmd_map, EXRCOK+WORD1 }, |
| 145 | #endif |
| 146 | |
| 147 | {(char *)0} |
| 148 | }; |
| 149 | |
| 150 | |
| 151 | /* This function parses a search pattern - given a pointer to a / or ?, |
| 152 | * it replaces the ending / or ? with a \0, and returns a pointer to the |
| 153 | * stuff that came after the pattern. |
| 154 | */ |
| 155 | char *parseptrn(ptrn) |
| 156 | REG char *ptrn; |
| 157 | { |
| 158 | REG char *scan; |
| 159 | |
| 160 | for (scan = ptrn + 1; |
| 161 | *scan && *scan != *ptrn; |
| 162 | scan++) |
| 163 | { |
| 164 | /* allow backslashed versions of / and ? in the pattern */ |
| 165 | if (*scan == '\\' && scan[1] != '\0') |
| 166 | { |
| 167 | scan++; |
| 168 | } |
| 169 | } |
| 170 | if (*scan) |
| 171 | { |
| 172 | *scan++ = '\0'; |
| 173 | } |
| 174 | |
| 175 | return scan; |
| 176 | } |
| 177 | |
| 178 | |
| 179 | /* This function parses a line specifier for ex commands */ |
| 180 | char *linespec(s, markptr) |
| 181 | REG char *s; /* start of the line specifier */ |
| 182 | MARK *markptr; /* where to store the mark's value */ |
| 183 | { |
| 184 | long num; |
| 185 | REG char *t; |
| 186 | |
| 187 | /* parse each ;-delimited clause of this linespec */ |
| 188 | do |
| 189 | { |
| 190 | /* skip an initial ';', if any */ |
| 191 | if (*s == ';') |
| 192 | { |
| 193 | s++; |
| 194 | } |
| 195 | |
| 196 | /* skip leading spaces */ |
| 197 | while (isspace(*s)) |
| 198 | { |
| 199 | s++; |
| 200 | } |
| 201 | |
| 202 | /* dot means current position */ |
| 203 | if (*s == '.') |
| 204 | { |
| 205 | s++; |
| 206 | *markptr = cursor; |
| 207 | } |
| 208 | /* '$' means the last line */ |
| 209 | else if (*s == '$') |
| 210 | { |
| 211 | s++; |
| 212 | *markptr = MARK_LAST; |
| 213 | } |
| 214 | /* digit means an absolute line number */ |
| 215 | else if (isdigit(*s)) |
| 216 | { |
| 217 | for (num = 0; isdigit(*s); s++) |
| 218 | { |
| 219 | num = num * 10 + *s - '0'; |
| 220 | } |
| 221 | *markptr = MARK_AT_LINE(num); |
| 222 | } |
| 223 | /* appostrophe means go to a set mark */ |
| 224 | else if (*s == '\'') |
| 225 | { |
| 226 | s++; |
| 227 | *markptr = m_tomark(cursor, 1L, (int)*s); |
| 228 | s++; |
| 229 | } |
| 230 | /* slash means do a search */ |
| 231 | else if (*s == '/' || *s == '?') |
| 232 | { |
| 233 | /* put a '\0' at the end of the search pattern */ |
| 234 | t = parseptrn(s); |
| 235 | |
| 236 | /* search for the pattern */ |
| 237 | *markptr &= ~(BLKSIZE - 1); |
| 238 | if (*s == '/') |
| 239 | { |
| 240 | pfetch(markline(*markptr)); |
| 241 | if (plen > 0) |
| 242 | *markptr += plen - 1; |
| 243 | *markptr = m_fsrch(*markptr, s); |
| 244 | } |
| 245 | else |
| 246 | { |
| 247 | *markptr = m_bsrch(*markptr, s); |
| 248 | } |
| 249 | |
| 250 | /* adjust command string pointer */ |
| 251 | s = t; |
| 252 | } |
| 253 | |
| 254 | /* if linespec was faulty, quit now */ |
| 255 | if (!*markptr) |
| 256 | { |
| 257 | return s; |
| 258 | } |
| 259 | |
| 260 | /* maybe add an offset */ |
| 261 | t = s; |
| 262 | if (*t == '-' || *t == '+') |
| 263 | { |
| 264 | s++; |
| 265 | for (num = 0; isdigit(*s); s++) |
| 266 | { |
| 267 | num = num * 10 + *s - '0'; |
| 268 | } |
| 269 | if (num == 0) |
| 270 | { |
| 271 | num = 1; |
| 272 | } |
| 273 | *markptr = m_updnto(*markptr, num, *t); |
| 274 | } |
| 275 | } while (*s == ';' || *s == '+' || *s == '-'); |
| 276 | |
| 277 | /* protect against invalid line numbers */ |
| 278 | num = markline(*markptr); |
| 279 | if (num < 1L || num > nlines) |
| 280 | { |
| 281 | msg("Invalid line number -- must be from 1 to %ld", nlines); |
| 282 | *markptr = MARK_UNSET; |
| 283 | } |
| 284 | |
| 285 | return s; |
| 286 | } |
| 287 | |
| 288 | |
| 289 | |
| 290 | /* This function reads an ex command and executes it. */ |
| 291 | void ex() |
| 292 | { |
| 293 | char cmdbuf[150]; |
| 294 | REG int cmdlen; |
| 295 | static long oldline; |
| 296 | |
| 297 | significant = FALSE; |
| 298 | oldline = markline(cursor); |
| 299 | |
| 300 | while (mode == MODE_EX) |
| 301 | { |
| 302 | /* read a line */ |
| 303 | #ifdef CRUNCH |
| 304 | cmdlen = vgets(':', cmdbuf, sizeof(cmdbuf)); |
| 305 | #else |
| 306 | cmdlen = vgets(*o_prompt ? ':' : '\0', cmdbuf, sizeof(cmdbuf)); |
| 307 | #endif |
| 308 | if (cmdlen < 0) |
| 309 | { |
| 310 | return; |
| 311 | } |
| 312 | |
| 313 | /* if empty line, assume ".+1" */ |
| 314 | if (cmdlen == 0) |
| 315 | { |
| 316 | strcpy(cmdbuf, ".+1"); |
| 317 | qaddch('\r'); |
| 318 | clrtoeol(); |
| 319 | } |
| 320 | else |
| 321 | { |
| 322 | addch('\n'); |
| 323 | } |
| 324 | refresh(); |
| 325 | |
| 326 | /* parse & execute the command */ |
| 327 | doexcmd(cmdbuf); |
| 328 | |
| 329 | /* handle autoprint */ |
| 330 | if (significant || markline(cursor) != oldline) |
| 331 | { |
| 332 | significant = FALSE; |
| 333 | oldline = markline(cursor); |
| 334 | if (*o_autoprint && mode == MODE_EX) |
| 335 | { |
| 336 | cmd_print(cursor, cursor, CMD_PRINT, FALSE, ""); |
| 337 | } |
| 338 | } |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | void doexcmd(cmdbuf) |
| 343 | char *cmdbuf; /* string containing an ex command */ |
| 344 | { |
| 345 | REG char *scan; /* used to scan thru cmdbuf */ |
| 346 | MARK frommark; /* first linespec */ |
| 347 | MARK tomark; /* second linespec */ |
| 348 | REG int cmdlen; /* length of the command name given */ |
| 349 | CMD cmd; /* what command is this? */ |
| 350 | ARGT argt; /* argument types for this command */ |
| 351 | short forceit; /* bang version of a command? */ |
| 352 | REG int cmdidx; /* index of command */ |
| 353 | REG char *build; /* used while copying filenames */ |
| 354 | int iswild; /* boolean: filenames use wildcards? */ |
| 355 | int isdfl; /* using default line ranges? */ |
| 356 | int didsub; /* did we substitute file names for % or # */ |
| 357 | |
| 358 | /* ex commands can't be undone via the shift-U command */ |
| 359 | U_line = 0L; |
| 360 | |
| 361 | /* permit extra colons at the start of the line */ |
| 362 | for (; *cmdbuf == ':'; cmdbuf++) |
| 363 | { |
| 364 | } |
| 365 | |
| 366 | /* ignore command lines that start with a double-quote */ |
| 367 | if (*cmdbuf == '"') |
| 368 | { |
| 369 | return; |
| 370 | } |
| 371 | scan = cmdbuf; |
| 372 | |
| 373 | /* parse the line specifier */ |
| 374 | if (nlines < 1) |
| 375 | { |
| 376 | /* no file, so don't allow addresses */ |
| 377 | } |
| 378 | else if (*scan == '%') |
| 379 | { |
| 380 | /* '%' means all lines */ |
| 381 | frommark = MARK_FIRST; |
| 382 | tomark = MARK_LAST; |
| 383 | scan++; |
| 384 | } |
| 385 | else if (*scan == '0') |
| 386 | { |
| 387 | frommark = tomark = MARK_UNSET; |
| 388 | scan++; |
| 389 | } |
| 390 | else |
| 391 | { |
| 392 | frommark = cursor; |
| 393 | scan = linespec(scan, &frommark); |
| 394 | tomark = frommark; |
| 395 | if (frommark && *scan == ',') |
| 396 | { |
| 397 | scan++; |
| 398 | scan = linespec(scan, &tomark); |
| 399 | } |
| 400 | if (!tomark) |
| 401 | { |
| 402 | /* faulty line spec -- fault already described */ |
| 403 | return; |
| 404 | } |
| 405 | if (frommark > tomark) |
| 406 | { |
| 407 | msg("first address exceeds the second"); |
| 408 | return; |
| 409 | } |
| 410 | } |
| 411 | isdfl = (scan == cmdbuf); |
| 412 | |
| 413 | /* skip whitespace */ |
| 414 | while (isspace(*scan)) |
| 415 | { |
| 416 | scan++; |
| 417 | } |
| 418 | |
| 419 | /* if no command, then just move the cursor to the mark */ |
| 420 | if (!*scan) |
| 421 | { |
| 422 | if (tomark != MARK_UNSET) |
| 423 | cursor = tomark; |
| 424 | return; |
| 425 | } |
| 426 | |
| 427 | /* figure out how long the command name is */ |
| 428 | if (!isalpha(*scan)) |
| 429 | { |
| 430 | cmdlen = 1; |
| 431 | } |
| 432 | else |
| 433 | { |
| 434 | for (cmdlen = 1; |
| 435 | isalpha(scan[cmdlen]); |
| 436 | cmdlen++) |
| 437 | { |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | /* lookup the command code */ |
| 442 | for (cmdidx = 0; |
| 443 | cmdnames[cmdidx].name && strncmp(scan, cmdnames[cmdidx].name, cmdlen); |
| 444 | cmdidx++) |
| 445 | { |
| 446 | } |
| 447 | argt = cmdnames[cmdidx].argt; |
| 448 | cmd = cmdnames[cmdidx].code; |
| 449 | if (cmd == CMD_NULL) |
| 450 | { |
| 451 | msg("Unknown command \"%.*s\"", cmdlen, scan); |
| 452 | return; |
| 453 | } |
| 454 | |
| 455 | /* !!! if the command doesn't have NOBAR set, then replace | with \0 */ |
| 456 | |
| 457 | /* if the command ended with a bang, set the forceit flag */ |
| 458 | scan += cmdlen; |
| 459 | if ((argt & BANG) && *scan == '!') |
| 460 | { |
| 461 | scan++; |
| 462 | forceit = 1; |
| 463 | } |
| 464 | else |
| 465 | { |
| 466 | forceit = 0; |
| 467 | } |
| 468 | |
| 469 | /* skip any more whitespace, to leave scan pointing to arguments */ |
| 470 | while (isspace(*scan)) |
| 471 | { |
| 472 | scan++; |
| 473 | } |
| 474 | |
| 475 | /* a couple of special cases for filenames */ |
| 476 | if (argt & XFILE) |
| 477 | { |
| 478 | /* if names were given, process them */ |
| 479 | if (*scan) |
| 480 | { |
| 481 | for (build = tmpblk.c, iswild = didsub = FALSE; *scan; scan++) |
| 482 | { |
| 483 | switch (*scan) |
| 484 | { |
| 485 | case '\\': |
| 486 | if (scan[1] == '\\' || scan[1] == '%' || scan[1] == '#') |
| 487 | { |
| 488 | *build++ = *++scan; |
| 489 | } |
| 490 | else |
| 491 | { |
| 492 | *build++ = '\\'; |
| 493 | } |
| 494 | break; |
| 495 | |
| 496 | case '%': |
| 497 | if (!*origname) |
| 498 | { |
| 499 | msg("No filename to substitute for %%"); |
| 500 | return; |
| 501 | } |
| 502 | strcpy(build, origname); |
| 503 | while (*build) |
| 504 | { |
| 505 | build++; |
| 506 | } |
| 507 | didsub = TRUE; |
| 508 | break; |
| 509 | |
| 510 | case '#': |
| 511 | if (!*prevorig) |
| 512 | { |
| 513 | msg("No filename to substitute for #"); |
| 514 | return; |
| 515 | } |
| 516 | strcpy(build, prevorig); |
| 517 | while (*build) |
| 518 | { |
| 519 | build++; |
| 520 | } |
| 521 | didsub = TRUE; |
| 522 | break; |
| 523 | |
| 524 | case '*': |
| 525 | case '?': |
| 526 | #if !(MSDOS || TOS) |
| 527 | case '[': |
| 528 | case '`': |
| 529 | case '{': /* } */ |
| 530 | case '$': |
| 531 | case '~': |
| 532 | #endif |
| 533 | *build++ = *scan; |
| 534 | iswild = TRUE; |
| 535 | break; |
| 536 | |
| 537 | default: |
| 538 | *build++ = *scan; |
| 539 | } |
| 540 | } |
| 541 | *build = '\0'; |
| 542 | |
| 543 | if (cmd == CMD_BANG |
| 544 | || cmd == CMD_READ && tmpblk.c[0] == '!' |
| 545 | || cmd == CMD_WRITE && tmpblk.c[0] == '!') |
| 546 | { |
| 547 | if (didsub) |
| 548 | { |
| 549 | if (mode != MODE_EX) |
| 550 | { |
| 551 | addch('\n'); |
| 552 | } |
| 553 | addstr(tmpblk.c); |
| 554 | addch('\n'); |
| 555 | exrefresh(); |
| 556 | } |
| 557 | } |
| 558 | else |
| 559 | { |
| 560 | if (iswild && tmpblk.c[0] != '>') |
| 561 | { |
| 562 | scan = wildcard(tmpblk.c); |
| 563 | } |
| 564 | } |
| 565 | } |
| 566 | else /* no names given, maybe assume origname */ |
| 567 | { |
| 568 | if (!(argt & NODFL)) |
| 569 | { |
| 570 | strcpy(tmpblk.c, origname); |
| 571 | } |
| 572 | else |
| 573 | { |
| 574 | *tmpblk.c = '\0'; |
| 575 | } |
| 576 | } |
| 577 | |
| 578 | scan = tmpblk.c; |
| 579 | } |
| 580 | |
| 581 | /* bad arguments? */ |
| 582 | if (!(argt & EXRCOK) && nlines < 1L) |
| 583 | { |
| 584 | msg("Can't use the \"%s\" command in a %s file", cmdnames[cmdidx].name, EXRC); |
| 585 | return; |
| 586 | } |
| 587 | if (!(argt & (ZERO | EXRCOK)) && frommark == MARK_UNSET) |
| 588 | { |
| 589 | msg("Can't use address 0 with \"%s\" command.", cmdnames[cmdidx].name); |
| 590 | return; |
| 591 | } |
| 592 | if (!(argt & FROM) && frommark != cursor && nlines >= 1L) |
| 593 | { |
| 594 | msg("Can't use address with \"%s\" command.", cmdnames[cmdidx].name); |
| 595 | return; |
| 596 | } |
| 597 | if (!(argt & TO) && tomark != frommark && nlines >= 1L) |
| 598 | { |
| 599 | msg("Can't use a range with \"%s\" command.", cmdnames[cmdidx].name); |
| 600 | return; |
| 601 | } |
| 602 | if (!(argt & EXTRA) && *scan) |
| 603 | { |
| 604 | msg("Extra characters after \"%s\" command.", cmdnames[cmdidx].name); |
| 605 | return; |
| 606 | } |
| 607 | if ((argt & NOSPC) && !(cmd == CMD_READ && (forceit || *scan == '!'))) |
| 608 | { |
| 609 | build = scan; |
| 610 | #ifndef CRUNCH |
| 611 | if ((argt & PLUS) && *build == '+') |
| 612 | { |
| 613 | while (*build && !isspace(*build)) |
| 614 | { |
| 615 | build++; |
| 616 | } |
| 617 | while (*build && isspace(*build)) |
| 618 | { |
| 619 | build++; |
| 620 | } |
| 621 | } |
| 622 | #endif /* not CRUNCH */ |
| 623 | for (; *build; build++) |
| 624 | { |
| 625 | if (isspace(*build)) |
| 626 | { |
| 627 | msg("Too many %s to \"%s\" command.", |
| 628 | (argt & XFILE) ? "filenames" : "arguments", |
| 629 | cmdnames[cmdidx].name); |
| 630 | return; |
| 631 | } |
| 632 | } |
| 633 | } |
| 634 | |
| 635 | /* some commands have special default ranges */ |
| 636 | if (isdfl && (argt & DFLALL)) |
| 637 | { |
| 638 | frommark = MARK_FIRST; |
| 639 | tomark = MARK_LAST; |
| 640 | } |
| 641 | else if (isdfl && (argt & DFLNONE)) |
| 642 | { |
| 643 | frommark = tomark = 0L; |
| 644 | } |
| 645 | |
| 646 | /* write a newline if called from visual mode */ |
| 647 | if ((argt & NL) && mode != MODE_EX && !exwrote) |
| 648 | { |
| 649 | addch('\n'); |
| 650 | exrefresh(); |
| 651 | } |
| 652 | |
| 653 | /* act on the command */ |
| 654 | (*cmdnames[cmdidx].fn)(frommark, tomark, cmd, forceit, scan); |
| 655 | } |
| 656 | |
| 657 | |
| 658 | /* This function executes EX commands from a file. It returns 1 normally, or |
| 659 | * 0 if the file could not be opened for reading. |
| 660 | */ |
| 661 | int doexrc(filename) |
| 662 | char *filename; /* name of a ".exrc" file */ |
| 663 | { |
| 664 | int fd; /* file descriptor */ |
| 665 | int len; /* length of the ".exrc" file */ |
| 666 | |
| 667 | /* !!! kludge: we use U_text as the buffer. This has the side-effect |
| 668 | * of interfering with the shift-U visual command. Disable shift-U. |
| 669 | */ |
| 670 | U_line = 0L; |
| 671 | |
| 672 | /* open the file, read it, and close */ |
| 673 | fd = open(filename, O_RDONLY); |
| 674 | if (fd < 0) |
| 675 | { |
| 676 | return 0; |
| 677 | } |
| 678 | len = tread(fd, U_text, BLKSIZE); |
| 679 | close(fd); |
| 680 | |
| 681 | /* execute the string */ |
| 682 | exstring(U_text, len, ctrl('V')); |
| 683 | |
| 684 | return 1; |
| 685 | } |
| 686 | |
| 687 | /* This function executes EX commands from a string. The commands may be |
| 688 | * separated by newlines or by | characters. It also handles quoting. |
| 689 | * Each individual command is limited to 132 bytes, but the total string |
| 690 | * may be longer. |
| 691 | */ |
| 692 | void exstring(buf, len, qchar) |
| 693 | char *buf; /* the commands to execute */ |
| 694 | int len; /* the length of the string */ |
| 695 | int qchar; /* the quote character -- ^V for file, or \ for kbd */ |
| 696 | { |
| 697 | char single[133]; /* a single command */ |
| 698 | char *src, *dest; |
| 699 | int i; |
| 700 | |
| 701 | /* find & do each command */ |
| 702 | for (src = buf; src < &buf[len]; src++) |
| 703 | { |
| 704 | /* Copy a single command into single[]. Convert any quoted | |
| 705 | * into a normal |, and stop at a newline or unquoted |. |
| 706 | */ |
| 707 | for (dest = single, i = 0; |
| 708 | i < 132 && src < &buf[len] && *src != '\n' && *src != '|'; |
| 709 | src++, i++) |
| 710 | { |
| 711 | if (src[0] == qchar && src[1] == '|') |
| 712 | { |
| 713 | src++; |
| 714 | } |
| 715 | *dest++ = *src; |
| 716 | } |
| 717 | *dest = '\0'; |
| 718 | |
| 719 | /* do it */ |
| 720 | doexcmd(single); |
| 721 | } |
| 722 | } |