| Commit | Line | Data |
|---|
| 378cc40b |
1 | /* $Header: toke.c,v 2.0 88/06/05 00:11:16 root Exp $ |
| 2 | * |
| 3 | * $Log: toke.c,v $ |
| 4 | * Revision 2.0 88/06/05 00:11:16 root |
| 5 | * Baseline version 2.0. |
| 6 | * |
| 7 | */ |
| 8 | |
| 9 | #include "EXTERN.h" |
| 10 | #include "perl.h" |
| 11 | #include "perly.h" |
| 12 | |
| 13 | #define CLINE (cmdline = (line < cmdline ? line : cmdline)) |
| 14 | |
| 15 | #define RETURN(retval) return (bufptr = s,(int)retval) |
| 16 | #define OPERATOR(retval) return (expectterm = TRUE,bufptr = s,(int)retval) |
| 17 | #define TERM(retval) return (CLINE, expectterm = FALSE,bufptr = s,(int)retval) |
| 18 | #define LOOPX(f) return(yylval.ival=f,expectterm = FALSE,bufptr = s,(int)LOOPEX) |
| 19 | #define UNI(f) return(yylval.ival = f,expectterm = TRUE,bufptr = s,(int)UNIOP) |
| 20 | #define FTST(f) return(yylval.ival=f,expectterm = TRUE,bufptr = s,(int)FILETEST) |
| 21 | #define FUN0(f) return(yylval.ival = f,expectterm = FALSE,bufptr = s,(int)FUNC0) |
| 22 | #define FUN1(f) return(yylval.ival = f,expectterm = FALSE,bufptr = s,(int)FUNC1) |
| 23 | #define FUN2(f) return(yylval.ival = f,expectterm = FALSE,bufptr = s,(int)FUNC2) |
| 24 | #define FUN3(f) return(yylval.ival = f,expectterm = FALSE,bufptr = s,(int)FUNC3) |
| 25 | #define SFUN(f) return(yylval.ival=f,expectterm = FALSE,bufptr = s,(int)STABFUN) |
| 26 | #define LFUN(f) return(yylval.ival=f,expectterm = FALSE,bufptr = s,(int)LVALFUN) |
| 27 | |
| 28 | yylex() |
| 29 | { |
| 30 | register char *s = bufptr; |
| 31 | register char *d; |
| 32 | register int tmp; |
| 33 | static bool in_format = FALSE; |
| 34 | static bool firstline = TRUE; |
| 35 | |
| 36 | retry: |
| 37 | #ifdef YYDEBUG |
| 38 | if (yydebug) |
| 39 | if (index(s,'\n')) |
| 40 | fprintf(stderr,"Tokener at %s",s); |
| 41 | else |
| 42 | fprintf(stderr,"Tokener at %s\n",s); |
| 43 | #endif |
| 44 | switch (*s) { |
| 45 | default: |
| 46 | fprintf(stderr, |
| 47 | "Unrecognized character %c in file %s line %ld--ignoring.\n", |
| 48 | *s++,filename,(long)line); |
| 49 | goto retry; |
| 50 | case 0: |
| 51 | s = str_get(linestr); |
| 52 | *s = '\0'; |
| 53 | if (firstline && (minus_n || minus_p)) { |
| 54 | firstline = FALSE; |
| 55 | str_set(linestr,"line: while (<>) {"); |
| 56 | if (minus_a) |
| 57 | str_cat(linestr,"@F=split(' ');"); |
| 58 | s = str_get(linestr); |
| 59 | goto retry; |
| 60 | } |
| 61 | if (!rsfp) |
| 62 | RETURN(0); |
| 63 | if (in_format) { |
| 64 | yylval.formval = load_format(); /* leaves . in buffer */ |
| 65 | in_format = FALSE; |
| 66 | s = str_get(linestr); |
| 67 | TERM(FORMLIST); |
| 68 | } |
| 69 | line++; |
| 70 | if ((s = str_gets(linestr, rsfp)) == Nullch) { |
| 71 | if (preprocess) |
| 72 | pclose(rsfp); |
| 73 | else if (rsfp != stdin) |
| 74 | fclose(rsfp); |
| 75 | rsfp = Nullfp; |
| 76 | if (minus_n || minus_p) { |
| 77 | str_set(linestr,minus_p ? "}continue{print;" : ""); |
| 78 | str_cat(linestr,"}"); |
| 79 | s = str_get(linestr); |
| 80 | goto retry; |
| 81 | } |
| 82 | s = str_get(linestr); |
| 83 | RETURN(0); |
| 84 | } |
| 85 | #ifdef DEBUG |
| 86 | else if (firstline) { |
| 87 | char *showinput(); |
| 88 | s = showinput(); |
| 89 | } |
| 90 | #endif |
| 91 | firstline = FALSE; |
| 92 | goto retry; |
| 93 | case ' ': case '\t': case '\f': |
| 94 | s++; |
| 95 | goto retry; |
| 96 | case '\n': |
| 97 | case '#': |
| 98 | if (preprocess && s == str_get(linestr) && |
| 99 | s[1] == ' ' && isdigit(s[2])) { |
| 100 | line = atoi(s+2)-1; |
| 101 | for (s += 2; isdigit(*s); s++) ; |
| 102 | while (*s && isspace(*s)) s++; |
| 103 | if (filename) |
| 104 | safefree(filename); |
| 105 | s[strlen(s)-1] = '\0'; /* wipe out newline */ |
| 106 | if (*s == '"') { |
| 107 | s++; |
| 108 | s[strlen(s)-1] = '\0'; /* wipe out trailing quote */ |
| 109 | } |
| 110 | if (*s) |
| 111 | filename = savestr(s); |
| 112 | else |
| 113 | filename = savestr(origfilename); |
| 114 | s = str_get(linestr); |
| 115 | } |
| 116 | if (in_eval) { |
| 117 | while (*s && *s != '\n') |
| 118 | s++; |
| 119 | if (*s) |
| 120 | s++; |
| 121 | line++; |
| 122 | } |
| 123 | else |
| 124 | *s = '\0'; |
| 125 | if (lex_newlines) |
| 126 | RETURN('\n'); |
| 127 | goto retry; |
| 128 | case '-': |
| 129 | if (s[1] && isalpha(s[1]) && !isalpha(s[2])) { |
| 130 | s++; |
| 131 | switch (*s++) { |
| 132 | case 'r': FTST(O_FTEREAD); |
| 133 | case 'w': FTST(O_FTEWRITE); |
| 134 | case 'x': FTST(O_FTEEXEC); |
| 135 | case 'o': FTST(O_FTEOWNED); |
| 136 | case 'R': FTST(O_FTRREAD); |
| 137 | case 'W': FTST(O_FTRWRITE); |
| 138 | case 'X': FTST(O_FTREXEC); |
| 139 | case 'O': FTST(O_FTROWNED); |
| 140 | case 'e': FTST(O_FTIS); |
| 141 | case 'z': FTST(O_FTZERO); |
| 142 | case 's': FTST(O_FTSIZE); |
| 143 | case 'f': FTST(O_FTFILE); |
| 144 | case 'd': FTST(O_FTDIR); |
| 145 | case 'l': FTST(O_FTLINK); |
| 146 | case 'p': FTST(O_FTPIPE); |
| 147 | case 'S': FTST(O_FTSOCK); |
| 148 | case 'u': FTST(O_FTSUID); |
| 149 | case 'g': FTST(O_FTSGID); |
| 150 | case 'k': FTST(O_FTSVTX); |
| 151 | case 'b': FTST(O_FTBLK); |
| 152 | case 'c': FTST(O_FTCHR); |
| 153 | case 't': FTST(O_FTTTY); |
| 154 | case 'T': FTST(O_FTTEXT); |
| 155 | case 'B': FTST(O_FTBINARY); |
| 156 | default: |
| 157 | s -= 2; |
| 158 | break; |
| 159 | } |
| 160 | } |
| 161 | /*FALL THROUGH*/ |
| 162 | case '+': |
| 163 | if (s[1] == *s) { |
| 164 | s++; |
| 165 | if (*s++ == '+') |
| 166 | RETURN(INC); |
| 167 | else |
| 168 | RETURN(DEC); |
| 169 | } |
| 170 | /* FALL THROUGH */ |
| 171 | case '*': |
| 172 | case '%': |
| 173 | case '^': |
| 174 | case '~': |
| 175 | case '(': |
| 176 | case ',': |
| 177 | case ':': |
| 178 | case '[': |
| 179 | tmp = *s++; |
| 180 | OPERATOR(tmp); |
| 181 | case '{': |
| 182 | tmp = *s++; |
| 183 | if (isspace(*s) || *s == '#') |
| 184 | cmdline = NOLINE; /* invalidate current command line number */ |
| 185 | OPERATOR(tmp); |
| 186 | case ';': |
| 187 | if (line < cmdline) |
| 188 | cmdline = line; |
| 189 | tmp = *s++; |
| 190 | OPERATOR(tmp); |
| 191 | case ')': |
| 192 | case ']': |
| 193 | tmp = *s++; |
| 194 | TERM(tmp); |
| 195 | case '}': |
| 196 | tmp = *s++; |
| 197 | for (d = s; *d == ' ' || *d == '\t'; d++) ; |
| 198 | if (*d == '\n' || *d == '#') |
| 199 | OPERATOR(tmp); /* block end */ |
| 200 | else |
| 201 | TERM(tmp); /* associative array end */ |
| 202 | case '&': |
| 203 | s++; |
| 204 | tmp = *s++; |
| 205 | if (tmp == '&') |
| 206 | OPERATOR(ANDAND); |
| 207 | s--; |
| 208 | OPERATOR('&'); |
| 209 | case '|': |
| 210 | s++; |
| 211 | tmp = *s++; |
| 212 | if (tmp == '|') |
| 213 | OPERATOR(OROR); |
| 214 | s--; |
| 215 | OPERATOR('|'); |
| 216 | case '=': |
| 217 | s++; |
| 218 | tmp = *s++; |
| 219 | if (tmp == '=') |
| 220 | OPERATOR(EQ); |
| 221 | if (tmp == '~') |
| 222 | OPERATOR(MATCH); |
| 223 | s--; |
| 224 | OPERATOR('='); |
| 225 | case '!': |
| 226 | s++; |
| 227 | tmp = *s++; |
| 228 | if (tmp == '=') |
| 229 | OPERATOR(NE); |
| 230 | if (tmp == '~') |
| 231 | OPERATOR(NMATCH); |
| 232 | s--; |
| 233 | OPERATOR('!'); |
| 234 | case '<': |
| 235 | if (expectterm) { |
| 236 | s = scanstr(s); |
| 237 | TERM(RSTRING); |
| 238 | } |
| 239 | s++; |
| 240 | tmp = *s++; |
| 241 | if (tmp == '<') |
| 242 | OPERATOR(LS); |
| 243 | if (tmp == '=') |
| 244 | OPERATOR(LE); |
| 245 | s--; |
| 246 | OPERATOR('<'); |
| 247 | case '>': |
| 248 | s++; |
| 249 | tmp = *s++; |
| 250 | if (tmp == '>') |
| 251 | OPERATOR(RS); |
| 252 | if (tmp == '=') |
| 253 | OPERATOR(GE); |
| 254 | s--; |
| 255 | OPERATOR('>'); |
| 256 | |
| 257 | #define SNARFWORD \ |
| 258 | d = tokenbuf; \ |
| 259 | while (isalpha(*s) || isdigit(*s) || *s == '_') \ |
| 260 | *d++ = *s++; \ |
| 261 | *d = '\0'; \ |
| 262 | d = tokenbuf; |
| 263 | |
| 264 | case '$': |
| 265 | if (s[1] == '#' && (isalpha(s[2]) || s[2] == '_')) { |
| 266 | s++; |
| 267 | s = scanreg(s,tokenbuf); |
| 268 | yylval.stabval = aadd(stabent(tokenbuf,TRUE)); |
| 269 | TERM(ARYLEN); |
| 270 | } |
| 271 | s = scanreg(s,tokenbuf); |
| 272 | yylval.stabval = stabent(tokenbuf,TRUE); |
| 273 | TERM(REG); |
| 274 | |
| 275 | case '@': |
| 276 | s = scanreg(s,tokenbuf); |
| 277 | yylval.stabval = aadd(stabent(tokenbuf,TRUE)); |
| 278 | TERM(ARY); |
| 279 | |
| 280 | case '/': /* may either be division or pattern */ |
| 281 | case '?': /* may either be conditional or pattern */ |
| 282 | if (expectterm) { |
| 283 | s = scanpat(s); |
| 284 | TERM(PATTERN); |
| 285 | } |
| 286 | tmp = *s++; |
| 287 | OPERATOR(tmp); |
| 288 | |
| 289 | case '.': |
| 290 | if (!expectterm || !isdigit(s[1])) { |
| 291 | s++; |
| 292 | tmp = *s++; |
| 293 | if (tmp == '.') |
| 294 | OPERATOR(DOTDOT); |
| 295 | s--; |
| 296 | OPERATOR('.'); |
| 297 | } |
| 298 | /* FALL THROUGH */ |
| 299 | case '0': case '1': case '2': case '3': case '4': |
| 300 | case '5': case '6': case '7': case '8': case '9': |
| 301 | case '\'': case '"': case '`': |
| 302 | s = scanstr(s); |
| 303 | TERM(RSTRING); |
| 304 | |
| 305 | case '_': |
| 306 | SNARFWORD; |
| 307 | yylval.cval = savestr(d); |
| 308 | OPERATOR(WORD); |
| 309 | case 'a': case 'A': |
| 310 | SNARFWORD; |
| 311 | yylval.cval = savestr(d); |
| 312 | OPERATOR(WORD); |
| 313 | case 'b': case 'B': |
| 314 | SNARFWORD; |
| 315 | yylval.cval = savestr(d); |
| 316 | OPERATOR(WORD); |
| 317 | case 'c': case 'C': |
| 318 | SNARFWORD; |
| 319 | if (strEQ(d,"continue")) |
| 320 | OPERATOR(CONTINUE); |
| 321 | if (strEQ(d,"chdir")) |
| 322 | UNI(O_CHDIR); |
| 323 | if (strEQ(d,"close")) |
| 324 | OPERATOR(CLOSE); |
| 325 | if (strEQ(d,"crypt")) |
| 326 | FUN2(O_CRYPT); |
| 327 | if (strEQ(d,"chop")) |
| 328 | LFUN(O_CHOP); |
| 329 | if (strEQ(d,"chmod")) { |
| 330 | yylval.ival = O_CHMOD; |
| 331 | OPERATOR(LISTOP); |
| 332 | } |
| 333 | if (strEQ(d,"chown")) { |
| 334 | yylval.ival = O_CHOWN; |
| 335 | OPERATOR(LISTOP); |
| 336 | } |
| 337 | yylval.cval = savestr(d); |
| 338 | OPERATOR(WORD); |
| 339 | case 'd': case 'D': |
| 340 | SNARFWORD; |
| 341 | if (strEQ(d,"do")) |
| 342 | OPERATOR(DO); |
| 343 | if (strEQ(d,"die")) |
| 344 | UNI(O_DIE); |
| 345 | if (strEQ(d,"delete")) |
| 346 | OPERATOR(DELETE); |
| 347 | yylval.cval = savestr(d); |
| 348 | OPERATOR(WORD); |
| 349 | case 'e': case 'E': |
| 350 | SNARFWORD; |
| 351 | if (strEQ(d,"else")) |
| 352 | OPERATOR(ELSE); |
| 353 | if (strEQ(d,"elsif")) { |
| 354 | yylval.ival = line; |
| 355 | OPERATOR(ELSIF); |
| 356 | } |
| 357 | if (strEQ(d,"eq") || strEQ(d,"EQ")) |
| 358 | OPERATOR(SEQ); |
| 359 | if (strEQ(d,"exit")) |
| 360 | UNI(O_EXIT); |
| 361 | if (strEQ(d,"eval")) { |
| 362 | allstabs = TRUE; /* must initialize everything since */ |
| 363 | UNI(O_EVAL); /* we don't know what will be used */ |
| 364 | } |
| 365 | if (strEQ(d,"eof")) |
| 366 | TERM(FEOF); |
| 367 | if (strEQ(d,"exp")) |
| 368 | FUN1(O_EXP); |
| 369 | if (strEQ(d,"each")) |
| 370 | SFUN(O_EACH); |
| 371 | if (strEQ(d,"exec")) { |
| 372 | yylval.ival = O_EXEC; |
| 373 | OPERATOR(LISTOP); |
| 374 | } |
| 375 | yylval.cval = savestr(d); |
| 376 | OPERATOR(WORD); |
| 377 | case 'f': case 'F': |
| 378 | SNARFWORD; |
| 379 | if (strEQ(d,"for")) |
| 380 | OPERATOR(FOR); |
| 381 | if (strEQ(d,"foreach")) |
| 382 | OPERATOR(FOR); |
| 383 | if (strEQ(d,"format")) { |
| 384 | in_format = TRUE; |
| 385 | OPERATOR(FORMAT); |
| 386 | } |
| 387 | if (strEQ(d,"fork")) |
| 388 | FUN0(O_FORK); |
| 389 | yylval.cval = savestr(d); |
| 390 | OPERATOR(WORD); |
| 391 | case 'g': case 'G': |
| 392 | SNARFWORD; |
| 393 | if (strEQ(d,"gt") || strEQ(d,"GT")) |
| 394 | OPERATOR(SGT); |
| 395 | if (strEQ(d,"ge") || strEQ(d,"GE")) |
| 396 | OPERATOR(SGE); |
| 397 | if (strEQ(d,"goto")) |
| 398 | LOOPX(O_GOTO); |
| 399 | if (strEQ(d,"gmtime")) |
| 400 | FUN1(O_GMTIME); |
| 401 | yylval.cval = savestr(d); |
| 402 | OPERATOR(WORD); |
| 403 | case 'h': case 'H': |
| 404 | SNARFWORD; |
| 405 | if (strEQ(d,"hex")) |
| 406 | FUN1(O_HEX); |
| 407 | yylval.cval = savestr(d); |
| 408 | OPERATOR(WORD); |
| 409 | case 'i': case 'I': |
| 410 | SNARFWORD; |
| 411 | if (strEQ(d,"if")) { |
| 412 | yylval.ival = line; |
| 413 | OPERATOR(IF); |
| 414 | } |
| 415 | if (strEQ(d,"index")) |
| 416 | FUN2(O_INDEX); |
| 417 | if (strEQ(d,"int")) |
| 418 | FUN1(O_INT); |
| 419 | yylval.cval = savestr(d); |
| 420 | OPERATOR(WORD); |
| 421 | case 'j': case 'J': |
| 422 | SNARFWORD; |
| 423 | if (strEQ(d,"join")) |
| 424 | OPERATOR(JOIN); |
| 425 | yylval.cval = savestr(d); |
| 426 | OPERATOR(WORD); |
| 427 | case 'k': case 'K': |
| 428 | SNARFWORD; |
| 429 | if (strEQ(d,"keys")) |
| 430 | SFUN(O_KEYS); |
| 431 | if (strEQ(d,"kill")) { |
| 432 | yylval.ival = O_KILL; |
| 433 | OPERATOR(LISTOP); |
| 434 | } |
| 435 | yylval.cval = savestr(d); |
| 436 | OPERATOR(WORD); |
| 437 | case 'l': case 'L': |
| 438 | SNARFWORD; |
| 439 | if (strEQ(d,"last")) |
| 440 | LOOPX(O_LAST); |
| 441 | if (strEQ(d,"local")) |
| 442 | OPERATOR(LOCAL); |
| 443 | if (strEQ(d,"length")) |
| 444 | FUN1(O_LENGTH); |
| 445 | if (strEQ(d,"lt") || strEQ(d,"LT")) |
| 446 | OPERATOR(SLT); |
| 447 | if (strEQ(d,"le") || strEQ(d,"LE")) |
| 448 | OPERATOR(SLE); |
| 449 | if (strEQ(d,"localtime")) |
| 450 | FUN1(O_LOCALTIME); |
| 451 | if (strEQ(d,"log")) |
| 452 | FUN1(O_LOG); |
| 453 | if (strEQ(d,"link")) |
| 454 | FUN2(O_LINK); |
| 455 | yylval.cval = savestr(d); |
| 456 | OPERATOR(WORD); |
| 457 | case 'm': case 'M': |
| 458 | SNARFWORD; |
| 459 | if (strEQ(d,"m")) { |
| 460 | s = scanpat(s-1); |
| 461 | TERM(PATTERN); |
| 462 | } |
| 463 | yylval.cval = savestr(d); |
| 464 | OPERATOR(WORD); |
| 465 | case 'n': case 'N': |
| 466 | SNARFWORD; |
| 467 | if (strEQ(d,"next")) |
| 468 | LOOPX(O_NEXT); |
| 469 | if (strEQ(d,"ne") || strEQ(d,"NE")) |
| 470 | OPERATOR(SNE); |
| 471 | yylval.cval = savestr(d); |
| 472 | OPERATOR(WORD); |
| 473 | case 'o': case 'O': |
| 474 | SNARFWORD; |
| 475 | if (strEQ(d,"open")) |
| 476 | OPERATOR(OPEN); |
| 477 | if (strEQ(d,"ord")) |
| 478 | FUN1(O_ORD); |
| 479 | if (strEQ(d,"oct")) |
| 480 | FUN1(O_OCT); |
| 481 | yylval.cval = savestr(d); |
| 482 | OPERATOR(WORD); |
| 483 | case 'p': case 'P': |
| 484 | SNARFWORD; |
| 485 | if (strEQ(d,"print")) { |
| 486 | yylval.ival = O_PRINT; |
| 487 | OPERATOR(LISTOP); |
| 488 | } |
| 489 | if (strEQ(d,"printf")) { |
| 490 | yylval.ival = O_PRTF; |
| 491 | OPERATOR(LISTOP); |
| 492 | } |
| 493 | if (strEQ(d,"push")) { |
| 494 | yylval.ival = O_PUSH; |
| 495 | OPERATOR(PUSH); |
| 496 | } |
| 497 | if (strEQ(d,"pop")) |
| 498 | OPERATOR(POP); |
| 499 | yylval.cval = savestr(d); |
| 500 | OPERATOR(WORD); |
| 501 | case 'q': case 'Q': |
| 502 | SNARFWORD; |
| 503 | yylval.cval = savestr(d); |
| 504 | OPERATOR(WORD); |
| 505 | case 'r': case 'R': |
| 506 | SNARFWORD; |
| 507 | if (strEQ(d,"reset")) |
| 508 | UNI(O_RESET); |
| 509 | if (strEQ(d,"redo")) |
| 510 | LOOPX(O_REDO); |
| 511 | if (strEQ(d,"rename")) |
| 512 | FUN2(O_RENAME); |
| 513 | yylval.cval = savestr(d); |
| 514 | OPERATOR(WORD); |
| 515 | case 's': case 'S': |
| 516 | SNARFWORD; |
| 517 | if (strEQ(d,"s")) { |
| 518 | s = scansubst(s); |
| 519 | TERM(SUBST); |
| 520 | } |
| 521 | if (strEQ(d,"shift")) |
| 522 | TERM(SHIFT); |
| 523 | if (strEQ(d,"split")) |
| 524 | TERM(SPLIT); |
| 525 | if (strEQ(d,"substr")) |
| 526 | FUN3(O_SUBSTR); |
| 527 | if (strEQ(d,"sprintf")) |
| 528 | OPERATOR(SPRINTF); |
| 529 | if (strEQ(d,"sub")) |
| 530 | OPERATOR(SUB); |
| 531 | if (strEQ(d,"select")) |
| 532 | OPERATOR(SELECT); |
| 533 | if (strEQ(d,"seek")) |
| 534 | OPERATOR(SEEK); |
| 535 | if (strEQ(d,"stat")) |
| 536 | OPERATOR(STAT); |
| 537 | if (strEQ(d,"study")) { |
| 538 | sawstudy++; |
| 539 | LFUN(O_STUDY); |
| 540 | } |
| 541 | if (strEQ(d,"sqrt")) |
| 542 | FUN1(O_SQRT); |
| 543 | if (strEQ(d,"sleep")) |
| 544 | UNI(O_SLEEP); |
| 545 | if (strEQ(d,"system")) { |
| 546 | yylval.ival = O_SYSTEM; |
| 547 | OPERATOR(LISTOP); |
| 548 | } |
| 549 | if (strEQ(d,"symlink")) |
| 550 | FUN2(O_SYMLINK); |
| 551 | if (strEQ(d,"sort")) { |
| 552 | yylval.ival = O_SORT; |
| 553 | OPERATOR(LISTOP); |
| 554 | } |
| 555 | yylval.cval = savestr(d); |
| 556 | OPERATOR(WORD); |
| 557 | case 't': case 'T': |
| 558 | SNARFWORD; |
| 559 | if (strEQ(d,"tr")) { |
| 560 | s = scantrans(s); |
| 561 | TERM(TRANS); |
| 562 | } |
| 563 | if (strEQ(d,"tell")) |
| 564 | TERM(TELL); |
| 565 | if (strEQ(d,"time")) |
| 566 | FUN0(O_TIME); |
| 567 | if (strEQ(d,"times")) |
| 568 | FUN0(O_TMS); |
| 569 | yylval.cval = savestr(d); |
| 570 | OPERATOR(WORD); |
| 571 | case 'u': case 'U': |
| 572 | SNARFWORD; |
| 573 | if (strEQ(d,"using")) |
| 574 | OPERATOR(USING); |
| 575 | if (strEQ(d,"until")) { |
| 576 | yylval.ival = line; |
| 577 | OPERATOR(UNTIL); |
| 578 | } |
| 579 | if (strEQ(d,"unless")) { |
| 580 | yylval.ival = line; |
| 581 | OPERATOR(UNLESS); |
| 582 | } |
| 583 | if (strEQ(d,"umask")) |
| 584 | FUN1(O_UMASK); |
| 585 | if (strEQ(d,"unshift")) { |
| 586 | yylval.ival = O_UNSHIFT; |
| 587 | OPERATOR(PUSH); |
| 588 | } |
| 589 | if (strEQ(d,"unlink")) { |
| 590 | yylval.ival = O_UNLINK; |
| 591 | OPERATOR(LISTOP); |
| 592 | } |
| 593 | if (strEQ(d,"utime")) { |
| 594 | yylval.ival = O_UTIME; |
| 595 | OPERATOR(LISTOP); |
| 596 | } |
| 597 | yylval.cval = savestr(d); |
| 598 | OPERATOR(WORD); |
| 599 | case 'v': case 'V': |
| 600 | SNARFWORD; |
| 601 | if (strEQ(d,"values")) |
| 602 | SFUN(O_VALUES); |
| 603 | yylval.cval = savestr(d); |
| 604 | OPERATOR(WORD); |
| 605 | case 'w': case 'W': |
| 606 | SNARFWORD; |
| 607 | if (strEQ(d,"write")) |
| 608 | TERM(WRITE); |
| 609 | if (strEQ(d,"while")) { |
| 610 | yylval.ival = line; |
| 611 | OPERATOR(WHILE); |
| 612 | } |
| 613 | if (strEQ(d,"wait")) |
| 614 | FUN0(O_WAIT); |
| 615 | yylval.cval = savestr(d); |
| 616 | OPERATOR(WORD); |
| 617 | case 'x': case 'X': |
| 618 | SNARFWORD; |
| 619 | if (!expectterm && strEQ(d,"x")) |
| 620 | OPERATOR('x'); |
| 621 | yylval.cval = savestr(d); |
| 622 | OPERATOR(WORD); |
| 623 | case 'y': case 'Y': |
| 624 | SNARFWORD; |
| 625 | if (strEQ(d,"y")) { |
| 626 | s = scantrans(s); |
| 627 | TERM(TRANS); |
| 628 | } |
| 629 | yylval.cval = savestr(d); |
| 630 | OPERATOR(WORD); |
| 631 | case 'z': case 'Z': |
| 632 | SNARFWORD; |
| 633 | yylval.cval = savestr(d); |
| 634 | OPERATOR(WORD); |
| 635 | } |
| 636 | } |
| 637 | |
| 638 | char * |
| 639 | scanreg(s,dest) |
| 640 | register char *s; |
| 641 | char *dest; |
| 642 | { |
| 643 | register char *d; |
| 644 | |
| 645 | s++; |
| 646 | d = dest; |
| 647 | if (isdigit(*s)) { |
| 648 | while (isdigit(*s) || *s == '_') |
| 649 | *d++ = *s++; |
| 650 | } |
| 651 | else { |
| 652 | while (isalpha(*s) || isdigit(*s) || *s == '_') |
| 653 | *d++ = *s++; |
| 654 | } |
| 655 | *d = '\0'; |
| 656 | d = dest; |
| 657 | if (!*d) { |
| 658 | *d = *s++; |
| 659 | if (*d == '{') { |
| 660 | d = dest; |
| 661 | while (*s && *s != '}') |
| 662 | *d++ = *s++; |
| 663 | *d = '\0'; |
| 664 | d = dest; |
| 665 | if (*s) |
| 666 | s++; |
| 667 | } |
| 668 | else |
| 669 | d[1] = '\0'; |
| 670 | } |
| 671 | if (*d == '^' && !isspace(*s)) |
| 672 | *d = *s++ & 31; |
| 673 | return s; |
| 674 | } |
| 675 | |
| 676 | STR * |
| 677 | scanconst(string) |
| 678 | char *string; |
| 679 | { |
| 680 | register STR *retstr; |
| 681 | register char *t; |
| 682 | register char *d; |
| 683 | |
| 684 | if (index(string,'|')) { |
| 685 | return Nullstr; |
| 686 | } |
| 687 | retstr = str_make(string); |
| 688 | t = str_get(retstr); |
| 689 | *(long*)&retstr->str_nval = 100; |
| 690 | for (d=t; *d; ) { |
| 691 | switch (*d) { |
| 692 | case '.': case '[': case '$': case '(': case ')': case '|': |
| 693 | *d = '\0'; |
| 694 | break; |
| 695 | case '\\': |
| 696 | if (index("wWbB0123456789sSdD",d[1])) { |
| 697 | *d = '\0'; |
| 698 | break; |
| 699 | } |
| 700 | strcpy(d,d+1); |
| 701 | switch(*d) { |
| 702 | case 'n': |
| 703 | *d = '\n'; |
| 704 | break; |
| 705 | case 't': |
| 706 | *d = '\t'; |
| 707 | break; |
| 708 | case 'f': |
| 709 | *d = '\f'; |
| 710 | break; |
| 711 | case 'r': |
| 712 | *d = '\r'; |
| 713 | break; |
| 714 | } |
| 715 | /* FALL THROUGH */ |
| 716 | default: |
| 717 | if (d[1] == '*' || d[1] == '+' || d[1] == '?') { |
| 718 | *d = '\0'; |
| 719 | break; |
| 720 | } |
| 721 | d++; |
| 722 | } |
| 723 | } |
| 724 | if (!*t) { |
| 725 | str_free(retstr); |
| 726 | return Nullstr; |
| 727 | } |
| 728 | retstr->str_cur = strlen(retstr->str_ptr); |
| 729 | return retstr; |
| 730 | } |
| 731 | |
| 732 | char * |
| 733 | scanpat(s) |
| 734 | register char *s; |
| 735 | { |
| 736 | register SPAT *spat = (SPAT *) safemalloc(sizeof (SPAT)); |
| 737 | register char *d; |
| 738 | |
| 739 | bzero((char *)spat, sizeof(SPAT)); |
| 740 | spat->spat_next = spat_root; /* link into spat list */ |
| 741 | spat_root = spat; |
| 742 | |
| 743 | switch (*s++) { |
| 744 | case 'm': |
| 745 | s++; |
| 746 | break; |
| 747 | case '/': |
| 748 | break; |
| 749 | case '?': |
| 750 | spat->spat_flags |= SPAT_ONCE; |
| 751 | break; |
| 752 | default: |
| 753 | fatal("panic: scanpat"); |
| 754 | } |
| 755 | s = cpytill(tokenbuf,s,s[-1]); |
| 756 | if (!*s) |
| 757 | fatal("Search pattern not terminated"); |
| 758 | s++; |
| 759 | if (*s == 'i') { |
| 760 | s++; |
| 761 | spat->spat_flags |= SPAT_FOLD; |
| 762 | } |
| 763 | for (d=tokenbuf; *d; d++) { |
| 764 | if (*d == '$' && d[1] && d[-1] != '\\' && d[1] != '|') { |
| 765 | register ARG *arg; |
| 766 | |
| 767 | spat->spat_runtime = arg = op_new(1); |
| 768 | arg->arg_type = O_ITEM; |
| 769 | arg[1].arg_type = A_DOUBLE; |
| 770 | arg[1].arg_ptr.arg_str = str_make(tokenbuf); |
| 771 | goto got_pat; /* skip compiling for now */ |
| 772 | } |
| 773 | } |
| 774 | if (!(spat->spat_flags & SPAT_FOLD)) { |
| 775 | if (*tokenbuf == '^') { |
| 776 | spat->spat_short = scanconst(tokenbuf+1); |
| 777 | if (spat->spat_short) { |
| 778 | spat->spat_slen = strlen(spat->spat_short->str_ptr); |
| 779 | if (spat->spat_slen == strlen(tokenbuf+1)) |
| 780 | spat->spat_flags |= SPAT_ALL; |
| 781 | } |
| 782 | } |
| 783 | else { |
| 784 | spat->spat_flags |= SPAT_SCANFIRST; |
| 785 | spat->spat_short = scanconst(tokenbuf); |
| 786 | if (spat->spat_short) { |
| 787 | spat->spat_slen = strlen(spat->spat_short->str_ptr); |
| 788 | if (spat->spat_slen == strlen(tokenbuf)) |
| 789 | spat->spat_flags |= SPAT_ALL; |
| 790 | } |
| 791 | } |
| 792 | } |
| 793 | spat->spat_regexp = regcomp(tokenbuf,spat->spat_flags & SPAT_FOLD,1); |
| 794 | hoistmust(spat); |
| 795 | got_pat: |
| 796 | yylval.arg = make_match(O_MATCH,stab2arg(A_STAB,defstab),spat); |
| 797 | return s; |
| 798 | } |
| 799 | |
| 800 | char * |
| 801 | scansubst(s) |
| 802 | register char *s; |
| 803 | { |
| 804 | register SPAT *spat = (SPAT *) safemalloc(sizeof (SPAT)); |
| 805 | register char *d; |
| 806 | |
| 807 | bzero((char *)spat, sizeof(SPAT)); |
| 808 | spat->spat_next = spat_root; /* link into spat list */ |
| 809 | spat_root = spat; |
| 810 | |
| 811 | s = cpytill(tokenbuf,s+1,*s); |
| 812 | if (!*s) |
| 813 | fatal("Substitution pattern not terminated"); |
| 814 | for (d=tokenbuf; *d; d++) { |
| 815 | if (*d == '$' && d[1] && d[-1] != '\\' && d[1] != '|') { |
| 816 | register ARG *arg; |
| 817 | |
| 818 | spat->spat_runtime = arg = op_new(1); |
| 819 | arg->arg_type = O_ITEM; |
| 820 | arg[1].arg_type = A_DOUBLE; |
| 821 | arg[1].arg_ptr.arg_str = str_make(tokenbuf); |
| 822 | goto get_repl; /* skip compiling for now */ |
| 823 | } |
| 824 | } |
| 825 | if (*tokenbuf == '^') { |
| 826 | spat->spat_short = scanconst(tokenbuf+1); |
| 827 | if (spat->spat_short) |
| 828 | spat->spat_slen = strlen(spat->spat_short->str_ptr); |
| 829 | } |
| 830 | else { |
| 831 | spat->spat_flags |= SPAT_SCANFIRST; |
| 832 | spat->spat_short = scanconst(tokenbuf); |
| 833 | if (spat->spat_short) |
| 834 | spat->spat_slen = strlen(spat->spat_short->str_ptr); |
| 835 | } |
| 836 | d = savestr(tokenbuf); |
| 837 | get_repl: |
| 838 | s = scanstr(s); |
| 839 | if (!*s) |
| 840 | fatal("Substitution replacement not terminated"); |
| 841 | spat->spat_repl = yylval.arg; |
| 842 | spat->spat_flags |= SPAT_ONCE; |
| 843 | while (*s == 'g' || *s == 'i') { |
| 844 | if (*s == 'g') { |
| 845 | s++; |
| 846 | spat->spat_flags &= ~SPAT_ONCE; |
| 847 | } |
| 848 | if (*s == 'i') { |
| 849 | s++; |
| 850 | spat->spat_flags |= SPAT_FOLD; |
| 851 | } |
| 852 | } |
| 853 | if (!spat->spat_runtime) { |
| 854 | spat->spat_regexp = regcomp(d, spat->spat_flags & SPAT_FOLD,1); |
| 855 | hoistmust(spat); |
| 856 | safefree(d); |
| 857 | } |
| 858 | if (spat->spat_flags & SPAT_FOLD) { /* Oops, disable optimization */ |
| 859 | str_free(spat->spat_short); |
| 860 | spat->spat_short = Nullstr; |
| 861 | spat->spat_slen = 0; |
| 862 | } |
| 863 | yylval.arg = make_match(O_SUBST,stab2arg(A_STAB,defstab),spat); |
| 864 | return s; |
| 865 | } |
| 866 | |
| 867 | hoistmust(spat) |
| 868 | register SPAT *spat; |
| 869 | { |
| 870 | if (spat->spat_regexp->regmust) { /* is there a better short-circuit? */ |
| 871 | if (spat->spat_short && |
| 872 | strEQ(spat->spat_short->str_ptr,spat->spat_regexp->regmust->str_ptr)){ |
| 873 | if (spat->spat_flags & SPAT_SCANFIRST) { |
| 874 | str_free(spat->spat_short); |
| 875 | spat->spat_short = Nullstr; |
| 876 | } |
| 877 | else { |
| 878 | str_free(spat->spat_regexp->regmust); |
| 879 | spat->spat_regexp->regmust = Nullstr; |
| 880 | return; |
| 881 | } |
| 882 | } |
| 883 | if (!spat->spat_short || /* promote the better string */ |
| 884 | ((spat->spat_flags & SPAT_SCANFIRST) && |
| 885 | (spat->spat_short->str_cur < spat->spat_regexp->regmust->str_cur) )){ |
| 886 | str_free(spat->spat_short); /* ok if null */ |
| 887 | spat->spat_short = spat->spat_regexp->regmust; |
| 888 | spat->spat_regexp->regmust = Nullstr; |
| 889 | spat->spat_flags |= SPAT_SCANFIRST; |
| 890 | } |
| 891 | } |
| 892 | } |
| 893 | |
| 894 | char * |
| 895 | expand_charset(s) |
| 896 | register char *s; |
| 897 | { |
| 898 | char t[512]; |
| 899 | register char *d = t; |
| 900 | register int i; |
| 901 | |
| 902 | while (*s) { |
| 903 | if (s[1] == '-' && s[2]) { |
| 904 | for (i = s[0]; i <= s[2]; i++) |
| 905 | *d++ = i; |
| 906 | s += 3; |
| 907 | } |
| 908 | else |
| 909 | *d++ = *s++; |
| 910 | } |
| 911 | *d = '\0'; |
| 912 | return savestr(t); |
| 913 | } |
| 914 | |
| 915 | char * |
| 916 | scantrans(s) |
| 917 | register char *s; |
| 918 | { |
| 919 | ARG *arg = |
| 920 | l(make_op(O_TRANS,2,stab2arg(A_STAB,defstab),Nullarg,Nullarg,0)); |
| 921 | register char *t; |
| 922 | register char *r; |
| 923 | register char *tbl = safemalloc(256); |
| 924 | register int i; |
| 925 | |
| 926 | arg[2].arg_type = A_NULL; |
| 927 | arg[2].arg_ptr.arg_cval = tbl; |
| 928 | for (i=0; i<256; i++) |
| 929 | tbl[i] = 0; |
| 930 | s = scanstr(s); |
| 931 | if (!*s) |
| 932 | fatal("Translation pattern not terminated"); |
| 933 | t = expand_charset(str_get(yylval.arg[1].arg_ptr.arg_str)); |
| 934 | free_arg(yylval.arg); |
| 935 | s = scanstr(s-1); |
| 936 | if (!*s) |
| 937 | fatal("Translation replacement not terminated"); |
| 938 | r = expand_charset(str_get(yylval.arg[1].arg_ptr.arg_str)); |
| 939 | free_arg(yylval.arg); |
| 940 | yylval.arg = arg; |
| 941 | if (!*r) { |
| 942 | safefree(r); |
| 943 | r = t; |
| 944 | } |
| 945 | for (i = 0; t[i]; i++) { |
| 946 | if (!r[i]) |
| 947 | r[i] = r[i-1]; |
| 948 | tbl[t[i] & 0377] = r[i]; |
| 949 | } |
| 950 | if (r != t) |
| 951 | safefree(r); |
| 952 | safefree(t); |
| 953 | return s; |
| 954 | } |
| 955 | |
| 956 | char * |
| 957 | scanstr(s) |
| 958 | register char *s; |
| 959 | { |
| 960 | register char term; |
| 961 | register char *d; |
| 962 | register ARG *arg; |
| 963 | register bool makesingle = FALSE; |
| 964 | register STAB *stab; |
| 965 | char *leave = "\\$nrtfb0123456789"; /* which backslash sequences to keep */ |
| 966 | |
| 967 | arg = op_new(1); |
| 968 | yylval.arg = arg; |
| 969 | arg->arg_type = O_ITEM; |
| 970 | |
| 971 | switch (*s) { |
| 972 | default: /* a substitution replacement */ |
| 973 | arg[1].arg_type = A_DOUBLE; |
| 974 | makesingle = TRUE; /* maybe disable runtime scanning */ |
| 975 | term = *s; |
| 976 | if (term == '\'') |
| 977 | leave = Nullch; |
| 978 | goto snarf_it; |
| 979 | case '0': |
| 980 | { |
| 981 | long i; |
| 982 | int shift; |
| 983 | |
| 984 | arg[1].arg_type = A_SINGLE; |
| 985 | if (s[1] == 'x') { |
| 986 | shift = 4; |
| 987 | s += 2; |
| 988 | } |
| 989 | else if (s[1] == '.') |
| 990 | goto decimal; |
| 991 | else |
| 992 | shift = 3; |
| 993 | i = 0; |
| 994 | for (;;) { |
| 995 | switch (*s) { |
| 996 | default: |
| 997 | goto out; |
| 998 | case '8': case '9': |
| 999 | if (shift != 4) |
| 1000 | fatal("Illegal octal digit"); |
| 1001 | /* FALL THROUGH */ |
| 1002 | case '0': case '1': case '2': case '3': case '4': |
| 1003 | case '5': case '6': case '7': |
| 1004 | i <<= shift; |
| 1005 | i += *s++ & 15; |
| 1006 | break; |
| 1007 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
| 1008 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': |
| 1009 | if (shift != 4) |
| 1010 | goto out; |
| 1011 | i <<= 4; |
| 1012 | i += (*s++ & 7) + 9; |
| 1013 | break; |
| 1014 | } |
| 1015 | } |
| 1016 | out: |
| 1017 | sprintf(tokenbuf,"%ld",i); |
| 1018 | arg[1].arg_ptr.arg_str = str_make(tokenbuf); |
| 1019 | } |
| 1020 | break; |
| 1021 | case '1': case '2': case '3': case '4': case '5': |
| 1022 | case '6': case '7': case '8': case '9': case '.': |
| 1023 | decimal: |
| 1024 | arg[1].arg_type = A_SINGLE; |
| 1025 | d = tokenbuf; |
| 1026 | while (isdigit(*s) || *s == '_') { |
| 1027 | if (*s == '_') |
| 1028 | s++; |
| 1029 | else |
| 1030 | *d++ = *s++; |
| 1031 | } |
| 1032 | if (*s == '.' && index("0123456789eE",s[1])) { |
| 1033 | *d++ = *s++; |
| 1034 | while (isdigit(*s) || *s == '_') { |
| 1035 | if (*s == '_') |
| 1036 | s++; |
| 1037 | else |
| 1038 | *d++ = *s++; |
| 1039 | } |
| 1040 | } |
| 1041 | if (index("eE",*s) && index("+-0123456789",s[1])) { |
| 1042 | *d++ = *s++; |
| 1043 | if (*s == '+' || *s == '-') |
| 1044 | *d++ = *s++; |
| 1045 | while (isdigit(*s)) |
| 1046 | *d++ = *s++; |
| 1047 | } |
| 1048 | *d = '\0'; |
| 1049 | arg[1].arg_ptr.arg_str = str_make(tokenbuf); |
| 1050 | break; |
| 1051 | case '\'': |
| 1052 | arg[1].arg_type = A_SINGLE; |
| 1053 | term = *s; |
| 1054 | leave = Nullch; |
| 1055 | goto snarf_it; |
| 1056 | |
| 1057 | case '<': |
| 1058 | d = tokenbuf; |
| 1059 | s = cpytill(d,s+1,'>'); |
| 1060 | if (*s) |
| 1061 | s++; |
| 1062 | if (*d == '$') d++; |
| 1063 | while (*d && (isalpha(*d) || isdigit(*d) || *d == '_')) d++; |
| 1064 | if (*d) { |
| 1065 | d = tokenbuf; |
| 1066 | arg[1].arg_type = A_GLOB; |
| 1067 | d = savestr(d); |
| 1068 | arg[1].arg_ptr.arg_stab = stab = genstab(); |
| 1069 | stab->stab_io = stio_new(); |
| 1070 | stab->stab_val = str_make(d); |
| 1071 | } |
| 1072 | else { |
| 1073 | d = tokenbuf; |
| 1074 | if (!*d) |
| 1075 | strcpy(d,"ARGV"); |
| 1076 | if (*d == '$') { |
| 1077 | arg[1].arg_type = A_INDREAD; |
| 1078 | arg[1].arg_ptr.arg_stab = stabent(d+1,TRUE); |
| 1079 | } |
| 1080 | else { |
| 1081 | arg[1].arg_type = A_READ; |
| 1082 | if (rsfp == stdin && strEQ(d,"stdin")) |
| 1083 | fatal("Can't get both program and data from <stdin>"); |
| 1084 | arg[1].arg_ptr.arg_stab = stabent(d,TRUE); |
| 1085 | arg[1].arg_ptr.arg_stab->stab_io = stio_new(); |
| 1086 | if (strEQ(d,"ARGV")) { |
| 1087 | aadd(arg[1].arg_ptr.arg_stab); |
| 1088 | arg[1].arg_ptr.arg_stab->stab_io->flags |= |
| 1089 | IOF_ARGV|IOF_START; |
| 1090 | } |
| 1091 | } |
| 1092 | } |
| 1093 | break; |
| 1094 | case '"': |
| 1095 | arg[1].arg_type = A_DOUBLE; |
| 1096 | makesingle = TRUE; /* maybe disable runtime scanning */ |
| 1097 | term = *s; |
| 1098 | goto snarf_it; |
| 1099 | case '`': |
| 1100 | arg[1].arg_type = A_BACKTICK; |
| 1101 | term = *s; |
| 1102 | snarf_it: |
| 1103 | { |
| 1104 | STR *tmpstr; |
| 1105 | int sqstart = line; |
| 1106 | char *tmps; |
| 1107 | |
| 1108 | tmpstr = str_new(strlen(s)); |
| 1109 | s = str_append_till(tmpstr,s+1,term,leave); |
| 1110 | while (!*s) { /* multiple line string? */ |
| 1111 | s = str_gets(linestr, rsfp); |
| 1112 | if (!s) { |
| 1113 | line = sqstart; |
| 1114 | fatal("EOF in string"); |
| 1115 | } |
| 1116 | line++; |
| 1117 | s = str_append_till(tmpstr,s,term,leave); |
| 1118 | } |
| 1119 | s++; |
| 1120 | if (term == '\'') { |
| 1121 | arg[1].arg_ptr.arg_str = tmpstr; |
| 1122 | break; |
| 1123 | } |
| 1124 | tmps = s; |
| 1125 | s = tmpstr->str_ptr; |
| 1126 | while (*s) { /* see if we can make SINGLE */ |
| 1127 | if (*s == '\\' && s[1] && isdigit(s[1]) && !isdigit(s[2]) && |
| 1128 | !index("`\"",term) ) |
| 1129 | *s = '$'; /* grandfather \digit in subst */ |
| 1130 | if (*s == '$' && s[1] && s[1] != ')' && s[1] != '|') { |
| 1131 | makesingle = FALSE; /* force interpretation */ |
| 1132 | } |
| 1133 | else if (*s == '\\' && s[1]) { |
| 1134 | s++; |
| 1135 | } |
| 1136 | s++; |
| 1137 | } |
| 1138 | s = d = tmpstr->str_ptr; /* assuming shrinkage only */ |
| 1139 | while (*s) { |
| 1140 | if (*s == '$' && s[1] && s[1] != ')' && s[1] != '|') { |
| 1141 | int len; |
| 1142 | |
| 1143 | len = scanreg(s,tokenbuf) - s; |
| 1144 | stabent(tokenbuf,TRUE); /* make sure it's created */ |
| 1145 | while (len--) |
| 1146 | *d++ = *s++; |
| 1147 | continue; |
| 1148 | } |
| 1149 | else if (*s == '\\' && s[1]) { |
| 1150 | s++; |
| 1151 | switch (*s) { |
| 1152 | default: |
| 1153 | if (!makesingle && (!leave || index(leave,*s))) |
| 1154 | *d++ = '\\'; |
| 1155 | *d++ = *s++; |
| 1156 | continue; |
| 1157 | case '0': case '1': case '2': case '3': |
| 1158 | case '4': case '5': case '6': case '7': |
| 1159 | *d = *s++ - '0'; |
| 1160 | if (index("01234567",*s)) { |
| 1161 | *d <<= 3; |
| 1162 | *d += *s++ - '0'; |
| 1163 | } |
| 1164 | if (index("01234567",*s)) { |
| 1165 | *d <<= 3; |
| 1166 | *d += *s++ - '0'; |
| 1167 | } |
| 1168 | d++; |
| 1169 | continue; |
| 1170 | case 'b': |
| 1171 | *d++ = '\b'; |
| 1172 | break; |
| 1173 | case 'n': |
| 1174 | *d++ = '\n'; |
| 1175 | break; |
| 1176 | case 'r': |
| 1177 | *d++ = '\r'; |
| 1178 | break; |
| 1179 | case 'f': |
| 1180 | *d++ = '\f'; |
| 1181 | break; |
| 1182 | case 't': |
| 1183 | *d++ = '\t'; |
| 1184 | break; |
| 1185 | } |
| 1186 | s++; |
| 1187 | continue; |
| 1188 | } |
| 1189 | *d++ = *s++; |
| 1190 | } |
| 1191 | *d = '\0'; |
| 1192 | |
| 1193 | if (arg[1].arg_type == A_DOUBLE && makesingle) |
| 1194 | arg[1].arg_type = A_SINGLE; /* now we can optimize on it */ |
| 1195 | |
| 1196 | tmpstr->str_cur = d - tmpstr->str_ptr; /* XXX cheat */ |
| 1197 | arg[1].arg_ptr.arg_str = tmpstr; |
| 1198 | s = tmps; |
| 1199 | break; |
| 1200 | } |
| 1201 | } |
| 1202 | return s; |
| 1203 | } |
| 1204 | |
| 1205 | FCMD * |
| 1206 | load_format() |
| 1207 | { |
| 1208 | FCMD froot; |
| 1209 | FCMD *flinebeg; |
| 1210 | register FCMD *fprev = &froot; |
| 1211 | register FCMD *fcmd; |
| 1212 | register char *s; |
| 1213 | register char *t; |
| 1214 | register char tmpchar; |
| 1215 | bool noblank; |
| 1216 | |
| 1217 | while ((s = str_gets(linestr,rsfp)) != Nullch) { |
| 1218 | line++; |
| 1219 | if (strEQ(s,".\n")) { |
| 1220 | bufptr = s; |
| 1221 | return froot.f_next; |
| 1222 | } |
| 1223 | if (*s == '#') |
| 1224 | continue; |
| 1225 | flinebeg = Nullfcmd; |
| 1226 | noblank = FALSE; |
| 1227 | while (*s) { |
| 1228 | fcmd = (FCMD *)safemalloc(sizeof (FCMD)); |
| 1229 | bzero((char*)fcmd, sizeof (FCMD)); |
| 1230 | fprev->f_next = fcmd; |
| 1231 | fprev = fcmd; |
| 1232 | for (t=s; *t && *t != '@' && *t != '^'; t++) { |
| 1233 | if (*t == '~') { |
| 1234 | noblank = TRUE; |
| 1235 | *t = ' '; |
| 1236 | } |
| 1237 | } |
| 1238 | tmpchar = *t; |
| 1239 | *t = '\0'; |
| 1240 | fcmd->f_pre = savestr(s); |
| 1241 | fcmd->f_presize = strlen(s); |
| 1242 | *t = tmpchar; |
| 1243 | s = t; |
| 1244 | if (!*s) { |
| 1245 | if (noblank) |
| 1246 | fcmd->f_flags |= FC_NOBLANK; |
| 1247 | break; |
| 1248 | } |
| 1249 | if (!flinebeg) |
| 1250 | flinebeg = fcmd; /* start values here */ |
| 1251 | if (*s++ == '^') |
| 1252 | fcmd->f_flags |= FC_CHOP; /* for doing text filling */ |
| 1253 | switch (*s) { |
| 1254 | case '*': |
| 1255 | fcmd->f_type = F_LINES; |
| 1256 | *s = '\0'; |
| 1257 | break; |
| 1258 | case '<': |
| 1259 | fcmd->f_type = F_LEFT; |
| 1260 | while (*s == '<') |
| 1261 | s++; |
| 1262 | break; |
| 1263 | case '>': |
| 1264 | fcmd->f_type = F_RIGHT; |
| 1265 | while (*s == '>') |
| 1266 | s++; |
| 1267 | break; |
| 1268 | case '|': |
| 1269 | fcmd->f_type = F_CENTER; |
| 1270 | while (*s == '|') |
| 1271 | s++; |
| 1272 | break; |
| 1273 | default: |
| 1274 | fcmd->f_type = F_LEFT; |
| 1275 | break; |
| 1276 | } |
| 1277 | if (fcmd->f_flags & FC_CHOP && *s == '.') { |
| 1278 | fcmd->f_flags |= FC_MORE; |
| 1279 | while (*s == '.') |
| 1280 | s++; |
| 1281 | } |
| 1282 | fcmd->f_size = s-t; |
| 1283 | } |
| 1284 | if (flinebeg) { |
| 1285 | again: |
| 1286 | if ((bufptr = str_gets(linestr ,rsfp)) == Nullch) |
| 1287 | goto badform; |
| 1288 | line++; |
| 1289 | if (strEQ(bufptr,".\n")) { |
| 1290 | yyerror("Missing values line"); |
| 1291 | return froot.f_next; |
| 1292 | } |
| 1293 | if (*bufptr == '#') |
| 1294 | goto again; |
| 1295 | lex_newlines = TRUE; |
| 1296 | while (flinebeg || *bufptr) { |
| 1297 | switch(yylex()) { |
| 1298 | default: |
| 1299 | yyerror("Bad value in format"); |
| 1300 | *bufptr = '\0'; |
| 1301 | break; |
| 1302 | case '\n': |
| 1303 | if (flinebeg) |
| 1304 | yyerror("Missing value in format"); |
| 1305 | *bufptr = '\0'; |
| 1306 | break; |
| 1307 | case REG: |
| 1308 | yylval.arg = stab2arg(A_LVAL,yylval.stabval); |
| 1309 | /* FALL THROUGH */ |
| 1310 | case RSTRING: |
| 1311 | if (!flinebeg) |
| 1312 | yyerror("Extra value in format"); |
| 1313 | else { |
| 1314 | flinebeg->f_expr = yylval.arg; |
| 1315 | do { |
| 1316 | flinebeg = flinebeg->f_next; |
| 1317 | } while (flinebeg && flinebeg->f_size == 0); |
| 1318 | } |
| 1319 | break; |
| 1320 | case ',': case ';': |
| 1321 | continue; |
| 1322 | } |
| 1323 | } |
| 1324 | lex_newlines = FALSE; |
| 1325 | } |
| 1326 | } |
| 1327 | badform: |
| 1328 | bufptr = str_get(linestr); |
| 1329 | yyerror("Format not terminated"); |
| 1330 | return froot.f_next; |
| 1331 | } |
projects / p5sagit/p5-mst-13.2.git / blame