https://perl5.git.perl.org / perl5.git / blame
| Commit | Line | Data |
|---|---|---|
| 13281fa4 | 1 | /* $Header: toke.c,v 2.0.1.1 88/06/28 16:39:50 root Exp $ |
| 378cc40b LW |
2 | * |
| 3 | * $Log: toke.c,v $ | |
| 13281fa4 LW |
4 | * Revision 2.0.1.1 88/06/28 16:39:50 root |
| 5 | * patch1: tr/x/y/ can dump core if y is shorter than x | |
| 6 | * | |
| 378cc40b LW |
7 | * Revision 2.0 88/06/05 00:11:16 root |
| 8 | * Baseline version 2.0. | |
| 9 | * | |
| 10 | */ | |
| 11 | ||
| 12 | #include "EXTERN.h" | |
| 13 | #include "perl.h" | |
| 14 | #include "perly.h" | |
| 15 | ||
| 16 | #define CLINE (cmdline = (line < cmdline ? line : cmdline)) | |
| 17 | ||
| 18 | #define RETURN(retval) return (bufptr = s,(int)retval) | |
| 19 | #define OPERATOR(retval) return (expectterm = TRUE,bufptr = s,(int)retval) | |
| 20 | #define TERM(retval) return (CLINE, expectterm = FALSE,bufptr = s,(int)retval) | |
| 21 | #define LOOPX(f) return(yylval.ival=f,expectterm = FALSE,bufptr = s,(int)LOOPEX) | |
| 22 | #define UNI(f) return(yylval.ival = f,expectterm = TRUE,bufptr = s,(int)UNIOP) | |
| 23 | #define FTST(f) return(yylval.ival=f,expectterm = TRUE,bufptr = s,(int)FILETEST) | |
| 24 | #define FUN0(f) return(yylval.ival = f,expectterm = FALSE,bufptr = s,(int)FUNC0) | |
| 25 | #define FUN1(f) return(yylval.ival = f,expectterm = FALSE,bufptr = s,(int)FUNC1) | |
| 26 | #define FUN2(f) return(yylval.ival = f,expectterm = FALSE,bufptr = s,(int)FUNC2) | |
| 27 | #define FUN3(f) return(yylval.ival = f,expectterm = FALSE,bufptr = s,(int)FUNC3) | |
| 28 | #define SFUN(f) return(yylval.ival=f,expectterm = FALSE,bufptr = s,(int)STABFUN) | |
| 29 | #define LFUN(f) return(yylval.ival=f,expectterm = FALSE,bufptr = s,(int)LVALFUN) | |
| 30 | ||
| 31 | yylex() | |
| 32 | { | |
| 33 | register char *s = bufptr; | |
| 34 | register char *d; | |
| 35 | register int tmp; | |
| 36 | static bool in_format = FALSE; | |
| 37 | static bool firstline = TRUE; | |
| 38 | ||
| 39 | retry: | |
| 40 | #ifdef YYDEBUG | |
| 41 | if (yydebug) | |
| 42 | if (index(s,'\n')) | |
| 43 | fprintf(stderr,"Tokener at %s",s); | |
| 44 | else | |
| 45 | fprintf(stderr,"Tokener at %s\n",s); | |
| 46 | #endif | |
| 47 | switch (*s) { | |
| 48 | default: | |
| 49 | fprintf(stderr, | |
| 50 | "Unrecognized character %c in file %s line %ld--ignoring.\n", | |
| 51 | *s++,filename,(long)line); | |
| 52 | goto retry; | |
| 53 | case 0: | |
| 54 | s = str_get(linestr); | |
| 55 | *s = '\0'; | |
| 56 | if (firstline && (minus_n || minus_p)) { | |
| 57 | firstline = FALSE; | |
| 58 | str_set(linestr,"line: while (<>) {"); | |
| 59 | if (minus_a) | |
| 60 | str_cat(linestr,"@F=split(' ');"); | |
| 61 | s = str_get(linestr); | |
| 62 | goto retry; | |
| 63 | } | |
| 64 | if (!rsfp) | |
| 65 | RETURN(0); | |
| 66 | if (in_format) { | |
| 67 | yylval.formval = load_format(); /* leaves . in buffer */ | |
| 68 | in_format = FALSE; | |
| 69 | s = str_get(linestr); | |
| 70 | TERM(FORMLIST); | |
| 71 | } | |
| 72 | line++; | |
| 73 | if ((s = str_gets(linestr, rsfp)) == Nullch) { | |
| 74 | if (preprocess) | |
| 75 | pclose(rsfp); | |
| 76 | else if (rsfp != stdin) | |
| 77 | fclose(rsfp); | |
| 78 | rsfp = Nullfp; | |
| 79 | if (minus_n || minus_p) { | |
| 80 | str_set(linestr,minus_p ? "}continue{print;" : ""); | |
| 81 | str_cat(linestr,"}"); | |
| 82 | s = str_get(linestr); | |
| 83 | goto retry; | |
| 84 | } | |
| 85 | s = str_get(linestr); | |
| 86 | RETURN(0); | |
| 87 | } | |
| 88 | #ifdef DEBUG | |
| 89 | else if (firstline) { | |
| 90 | char *showinput(); | |
| 91 | s = showinput(); | |
| 92 | } | |
| 93 | #endif | |
| 94 | firstline = FALSE; | |
| 95 | goto retry; | |
| 96 | case ' ': case '\t': case '\f': | |
| 97 | s++; | |
| 98 | goto retry; | |
| 99 | case '\n': | |
| 100 | case '#': | |
| 101 | if (preprocess && s == str_get(linestr) && | |
| 102 | s[1] == ' ' && isdigit(s[2])) { | |
| 103 | line = atoi(s+2)-1; | |
| 104 | for (s += 2; isdigit(*s); s++) ; | |
| 105 | while (*s && isspace(*s)) s++; | |
| 106 | if (filename) | |
| 107 | safefree(filename); | |
| 108 | s[strlen(s)-1] = '\0'; /* wipe out newline */ | |
| 109 | if (*s == '"') { | |
| 110 | s++; | |
| 111 | s[strlen(s)-1] = '\0'; /* wipe out trailing quote */ | |
| 112 | } | |
| 113 | if (*s) | |
| 114 | filename = savestr(s); | |
| 115 | else | |
| 116 | filename = savestr(origfilename); | |
| 117 | s = str_get(linestr); | |
| 118 | } | |
| 119 | if (in_eval) { | |
| 120 | while (*s && *s != '\n') | |
| 121 | s++; | |
| 122 | if (*s) | |
| 123 | s++; | |
| 124 | line++; | |
| 125 | } | |
| 126 | else | |
| 127 | *s = '\0'; | |
| 128 | if (lex_newlines) | |
| 129 | RETURN('\n'); | |
| 130 | goto retry; | |
| 131 | case '-': | |
| 132 | if (s[1] && isalpha(s[1]) && !isalpha(s[2])) { | |
| 133 | s++; | |
| 134 | switch (*s++) { | |
| 135 | case 'r': FTST(O_FTEREAD); | |
| 136 | case 'w': FTST(O_FTEWRITE); | |
| 137 | case 'x': FTST(O_FTEEXEC); | |
| 138 | case 'o': FTST(O_FTEOWNED); | |
| 139 | case 'R': FTST(O_FTRREAD); | |
| 140 | case 'W': FTST(O_FTRWRITE); | |
| 141 | case 'X': FTST(O_FTREXEC); | |
| 142 | case 'O': FTST(O_FTROWNED); | |
| 143 | case 'e': FTST(O_FTIS); | |
| 144 | case 'z': FTST(O_FTZERO); | |
| 145 | case 's': FTST(O_FTSIZE); | |
| 146 | case 'f': FTST(O_FTFILE); | |
| 147 | case 'd': FTST(O_FTDIR); | |
| 148 | case 'l': FTST(O_FTLINK); | |
| 149 | case 'p': FTST(O_FTPIPE); | |
| 150 | case 'S': FTST(O_FTSOCK); | |
| 151 | case 'u': FTST(O_FTSUID); | |
| 152 | case 'g': FTST(O_FTSGID); | |
| 153 | case 'k': FTST(O_FTSVTX); | |
| 154 | case 'b': FTST(O_FTBLK); | |
| 155 | case 'c': FTST(O_FTCHR); | |
| 156 | case 't': FTST(O_FTTTY); | |
| 157 | case 'T': FTST(O_FTTEXT); | |
| 158 | case 'B': FTST(O_FTBINARY); | |
| 159 | default: | |
| 160 | s -= 2; | |
| 161 | break; | |
| 162 | } | |
| 163 | } | |
| 164 | /*FALL THROUGH*/ | |
| 165 | case '+': | |
| 166 | if (s[1] == *s) { | |
| 167 | s++; | |
| 168 | if (*s++ == '+') | |
| 169 | RETURN(INC); | |
| 170 | else | |
| 171 | RETURN(DEC); | |
| 172 | } | |
| 173 | /* FALL THROUGH */ | |
| 174 | case '*': | |
| 175 | case '%': | |
| 176 | case '^': | |
| 177 | case '~': | |
| 178 | case '(': | |
| 179 | case ',': | |
| 180 | case ':': | |
| 181 | case '[': | |
| 182 | tmp = *s++; | |
| 183 | OPERATOR(tmp); | |
| 184 | case '{': | |
| 185 | tmp = *s++; | |
| 186 | if (isspace(*s) || *s == '#') | |
| 187 | cmdline = NOLINE; /* invalidate current command line number */ | |
| 188 | OPERATOR(tmp); | |
| 189 | case ';': | |
| 190 | if (line < cmdline) | |
| 191 | cmdline = line; | |
| 192 | tmp = *s++; | |
| 193 | OPERATOR(tmp); | |
| 194 | case ')': | |
| 195 | case ']': | |
| 196 | tmp = *s++; | |
| 197 | TERM(tmp); | |
| 198 | case '}': | |
| 199 | tmp = *s++; | |
| 200 | for (d = s; *d == ' ' || *d == '\t'; d++) ; | |
| 201 | if (*d == '\n' || *d == '#') | |
| 202 | OPERATOR(tmp); /* block end */ | |
| 203 | else | |
| 204 | TERM(tmp); /* associative array end */ | |
| 205 | case '&': | |
| 206 | s++; | |
| 207 | tmp = *s++; | |
| 208 | if (tmp == '&') | |
| 209 | OPERATOR(ANDAND); | |
| 210 | s--; | |
| 211 | OPERATOR('&'); | |
| 212 | case '|': | |
| 213 | s++; | |
| 214 | tmp = *s++; | |
| 215 | if (tmp == '|') | |
| 216 | OPERATOR(OROR); | |
| 217 | s--; | |
| 218 | OPERATOR('|'); | |
| 219 | case '=': | |
| 220 | s++; | |
| 221 | tmp = *s++; | |
| 222 | if (tmp == '=') | |
| 223 | OPERATOR(EQ); | |
| 224 | if (tmp == '~') | |
| 225 | OPERATOR(MATCH); | |
| 226 | s--; | |
| 227 | OPERATOR('='); | |
| 228 | case '!': | |
| 229 | s++; | |
| 230 | tmp = *s++; | |
| 231 | if (tmp == '=') | |
| 232 | OPERATOR(NE); | |
| 233 | if (tmp == '~') | |
| 234 | OPERATOR(NMATCH); | |
| 235 | s--; | |
| 236 | OPERATOR('!'); | |
| 237 | case '<': | |
| 238 | if (expectterm) { | |
| 239 | s = scanstr(s); | |
| 240 | TERM(RSTRING); | |
| 241 | } | |
| 242 | s++; | |
| 243 | tmp = *s++; | |
| 244 | if (tmp == '<') | |
| 245 | OPERATOR(LS); | |
| 246 | if (tmp == '=') | |
| 247 | OPERATOR(LE); | |
| 248 | s--; | |
| 249 | OPERATOR('<'); | |
| 250 | case '>': | |
| 251 | s++; | |
| 252 | tmp = *s++; | |
| 253 | if (tmp == '>') | |
| 254 | OPERATOR(RS); | |
| 255 | if (tmp == '=') | |
| 256 | OPERATOR(GE); | |
| 257 | s--; | |
| 258 | OPERATOR('>'); | |
| 259 | ||
| 260 | #define SNARFWORD \ | |
| 261 | d = tokenbuf; \ | |
| 262 | while (isalpha(*s) || isdigit(*s) || *s == '_') \ | |
| 263 | *d++ = *s++; \ | |
| 264 | *d = '\0'; \ | |
| 265 | d = tokenbuf; | |
| 266 | ||
| 267 | case '$': | |
| 268 | if (s[1] == '#' && (isalpha(s[2]) || s[2] == '_')) { | |
| 269 | s++; | |
| 270 | s = scanreg(s,tokenbuf); | |
| 271 | yylval.stabval = aadd(stabent(tokenbuf,TRUE)); | |
| 272 | TERM(ARYLEN); | |
| 273 | } | |
| 274 | s = scanreg(s,tokenbuf); | |
| 275 | yylval.stabval = stabent(tokenbuf,TRUE); | |
| 276 | TERM(REG); | |
| 277 | ||
| 278 | case '@': | |
| 279 | s = scanreg(s,tokenbuf); | |
| 280 | yylval.stabval = aadd(stabent(tokenbuf,TRUE)); | |
| 281 | TERM(ARY); | |
| 282 | ||
| 283 | case '/': /* may either be division or pattern */ | |
| 284 | case '?': /* may either be conditional or pattern */ | |
| 285 | if (expectterm) { | |
| 286 | s = scanpat(s); | |
| 287 | TERM(PATTERN); | |
| 288 | } | |
| 289 | tmp = *s++; | |
| 290 | OPERATOR(tmp); | |
| 291 | ||
| 292 | case '.': | |
| 293 | if (!expectterm || !isdigit(s[1])) { | |
| 294 | s++; | |
| 295 | tmp = *s++; | |
| 296 | if (tmp == '.') | |
| 297 | OPERATOR(DOTDOT); | |
| 298 | s--; | |
| 299 | OPERATOR('.'); | |
| 300 | } | |
| 301 | /* FALL THROUGH */ | |
| 302 | case '0': case '1': case '2': case '3': case '4': | |
| 303 | case '5': case '6': case '7': case '8': case '9': | |
| 304 | case '\'': case '"': case '`': | |
| 305 | s = scanstr(s); | |
| 306 | TERM(RSTRING); | |
| 307 | ||
| 308 | case '_': | |
| 309 | SNARFWORD; | |
| 310 | yylval.cval = savestr(d); | |
| 311 | OPERATOR(WORD); | |
| 312 | case 'a': case 'A': | |
| 313 | SNARFWORD; | |
| 314 | yylval.cval = savestr(d); | |
| 315 | OPERATOR(WORD); | |
| 316 | case 'b': case 'B': | |
| 317 | SNARFWORD; | |
| 318 | yylval.cval = savestr(d); | |
| 319 | OPERATOR(WORD); | |
| 320 | case 'c': case 'C': | |
| 321 | SNARFWORD; | |
| 322 | if (strEQ(d,"continue")) | |
| 323 | OPERATOR(CONTINUE); | |
| 324 | if (strEQ(d,"chdir")) | |
| 325 | UNI(O_CHDIR); | |
| 326 | if (strEQ(d,"close")) | |
| 327 | OPERATOR(CLOSE); | |
| 328 | if (strEQ(d,"crypt")) | |
| 329 | FUN2(O_CRYPT); | |
| 330 | if (strEQ(d,"chop")) | |
| 331 | LFUN(O_CHOP); | |
| 332 | if (strEQ(d,"chmod")) { | |
| 333 | yylval.ival = O_CHMOD; | |
| 334 | OPERATOR(LISTOP); | |
| 335 | } | |
| 336 | if (strEQ(d,"chown")) { | |
| 337 | yylval.ival = O_CHOWN; | |
| 338 | OPERATOR(LISTOP); | |
| 339 | } | |
| 340 | yylval.cval = savestr(d); | |
| 341 | OPERATOR(WORD); | |
| 342 | case 'd': case 'D': | |
| 343 | SNARFWORD; | |
| 344 | if (strEQ(d,"do")) | |
| 345 | OPERATOR(DO); | |
| 346 | if (strEQ(d,"die")) | |
| 347 | UNI(O_DIE); | |
| 348 | if (strEQ(d,"delete")) | |
| 349 | OPERATOR(DELETE); | |
| 350 | yylval.cval = savestr(d); | |
| 351 | OPERATOR(WORD); | |
| 352 | case 'e': case 'E': | |
| 353 | SNARFWORD; | |
| 354 | if (strEQ(d,"else")) | |
| 355 | OPERATOR(ELSE); | |
| 356 | if (strEQ(d,"elsif")) { | |
| 357 | yylval.ival = line; | |
| 358 | OPERATOR(ELSIF); | |
| 359 | } | |
| 360 | if (strEQ(d,"eq") || strEQ(d,"EQ")) | |
| 361 | OPERATOR(SEQ); | |
| 362 | if (strEQ(d,"exit")) | |
| 363 | UNI(O_EXIT); | |
| 364 | if (strEQ(d,"eval")) { | |
| 365 | allstabs = TRUE; /* must initialize everything since */ | |
| 366 | UNI(O_EVAL); /* we don't know what will be used */ | |
| 367 | } | |
| 368 | if (strEQ(d,"eof")) | |
| 369 | TERM(FEOF); | |
| 370 | if (strEQ(d,"exp")) | |
| 371 | FUN1(O_EXP); | |
| 372 | if (strEQ(d,"each")) | |
| 373 | SFUN(O_EACH); | |
| 374 | if (strEQ(d,"exec")) { | |
| 375 | yylval.ival = O_EXEC; | |
| 376 | OPERATOR(LISTOP); | |
| 377 | } | |
| 378 | yylval.cval = savestr(d); | |
| 379 | OPERATOR(WORD); | |
| 380 | case 'f': case 'F': | |
| 381 | SNARFWORD; | |
| 382 | if (strEQ(d,"for")) | |
| 383 | OPERATOR(FOR); | |
| 384 | if (strEQ(d,"foreach")) | |
| 385 | OPERATOR(FOR); | |
| 386 | if (strEQ(d,"format")) { | |
| 387 | in_format = TRUE; | |
| 388 | OPERATOR(FORMAT); | |
| 389 | } | |
| 390 | if (strEQ(d,"fork")) | |
| 391 | FUN0(O_FORK); | |
| 392 | yylval.cval = savestr(d); | |
| 393 | OPERATOR(WORD); | |
| 394 | case 'g': case 'G': | |
| 395 | SNARFWORD; | |
| 396 | if (strEQ(d,"gt") || strEQ(d,"GT")) | |
| 397 | OPERATOR(SGT); | |
| 398 | if (strEQ(d,"ge") || strEQ(d,"GE")) | |
| 399 | OPERATOR(SGE); | |
| 400 | if (strEQ(d,"goto")) | |
| 401 | LOOPX(O_GOTO); | |
| 402 | if (strEQ(d,"gmtime")) | |
| 403 | FUN1(O_GMTIME); | |
| 404 | yylval.cval = savestr(d); | |
| 405 | OPERATOR(WORD); | |
| 406 | case 'h': case 'H': | |
| 407 | SNARFWORD; | |
| 408 | if (strEQ(d,"hex")) | |
| 409 | FUN1(O_HEX); | |
| 410 | yylval.cval = savestr(d); | |
| 411 | OPERATOR(WORD); | |
| 412 | case 'i': case 'I': | |
| 413 | SNARFWORD; | |
| 414 | if (strEQ(d,"if")) { | |
| 415 | yylval.ival = line; | |
| 416 | OPERATOR(IF); | |
| 417 | } | |
| 418 | if (strEQ(d,"index")) | |
| 419 | FUN2(O_INDEX); | |
| 420 | if (strEQ(d,"int")) | |
| 421 | FUN1(O_INT); | |
| 422 | yylval.cval = savestr(d); | |
| 423 | OPERATOR(WORD); | |
| 424 | case 'j': case 'J': | |
| 425 | SNARFWORD; | |
| 426 | if (strEQ(d,"join")) | |
| 427 | OPERATOR(JOIN); | |
| 428 | yylval.cval = savestr(d); | |
| 429 | OPERATOR(WORD); | |
| 430 | case 'k': case 'K': | |
| 431 | SNARFWORD; | |
| 432 | if (strEQ(d,"keys")) | |
| 433 | SFUN(O_KEYS); | |
| 434 | if (strEQ(d,"kill")) { | |
| 435 | yylval.ival = O_KILL; | |
| 436 | OPERATOR(LISTOP); | |
| 437 | } | |
| 438 | yylval.cval = savestr(d); | |
| 439 | OPERATOR(WORD); | |
| 440 | case 'l': case 'L': | |
| 441 | SNARFWORD; | |
| 442 | if (strEQ(d,"last")) | |
| 443 | LOOPX(O_LAST); | |
| 444 | if (strEQ(d,"local")) | |
| 445 | OPERATOR(LOCAL); | |
| 446 | if (strEQ(d,"length")) | |
| 447 | FUN1(O_LENGTH); | |
| 448 | if (strEQ(d,"lt") || strEQ(d,"LT")) | |
| 449 | OPERATOR(SLT); | |
| 450 | if (strEQ(d,"le") || strEQ(d,"LE")) | |
| 451 | OPERATOR(SLE); | |
| 452 | if (strEQ(d,"localtime")) | |
| 453 | FUN1(O_LOCALTIME); | |
| 454 | if (strEQ(d,"log")) | |
| 455 | FUN1(O_LOG); | |
| 456 | if (strEQ(d,"link")) | |
| 457 | FUN2(O_LINK); | |
| 458 | yylval.cval = savestr(d); | |
| 459 | OPERATOR(WORD); | |
| 460 | case 'm': case 'M': | |
| 461 | SNARFWORD; | |
| 462 | if (strEQ(d,"m")) { | |
| 463 | s = scanpat(s-1); | |
| 464 | TERM(PATTERN); | |
| 465 | } | |
| 466 | yylval.cval = savestr(d); | |
| 467 | OPERATOR(WORD); | |
| 468 | case 'n': case 'N': | |
| 469 | SNARFWORD; | |
| 470 | if (strEQ(d,"next")) | |
| 471 | LOOPX(O_NEXT); | |
| 472 | if (strEQ(d,"ne") || strEQ(d,"NE")) | |
| 473 | OPERATOR(SNE); | |
| 474 | yylval.cval = savestr(d); | |
| 475 | OPERATOR(WORD); | |
| 476 | case 'o': case 'O': | |
| 477 | SNARFWORD; | |
| 478 | if (strEQ(d,"open")) | |
| 479 | OPERATOR(OPEN); | |
| 480 | if (strEQ(d,"ord")) | |
| 481 | FUN1(O_ORD); | |
| 482 | if (strEQ(d,"oct")) | |
| 483 | FUN1(O_OCT); | |
| 484 | yylval.cval = savestr(d); | |
| 485 | OPERATOR(WORD); | |
| 486 | case 'p': case 'P': | |
| 487 | SNARFWORD; | |
| 488 | if (strEQ(d,"print")) { | |
| 489 | yylval.ival = O_PRINT; | |
| 490 | OPERATOR(LISTOP); | |
| 491 | } | |
| 492 | if (strEQ(d,"printf")) { | |
| 493 | yylval.ival = O_PRTF; | |
| 494 | OPERATOR(LISTOP); | |
| 495 | } | |
| 496 | if (strEQ(d,"push")) { | |
| 497 | yylval.ival = O_PUSH; | |
| 498 | OPERATOR(PUSH); | |
| 499 | } | |
| 500 | if (strEQ(d,"pop")) | |
| 501 | OPERATOR(POP); | |
| 502 | yylval.cval = savestr(d); | |
| 503 | OPERATOR(WORD); | |
| 504 | case 'q': case 'Q': | |
| 505 | SNARFWORD; | |
| 506 | yylval.cval = savestr(d); | |
| 507 | OPERATOR(WORD); | |
| 508 | case 'r': case 'R': | |
| 509 | SNARFWORD; | |
| 510 | if (strEQ(d,"reset")) | |
| 511 | UNI(O_RESET); | |
| 512 | if (strEQ(d,"redo")) | |
| 513 | LOOPX(O_REDO); | |
| 514 | if (strEQ(d,"rename")) | |
| 515 | FUN2(O_RENAME); | |
| 516 | yylval.cval = savestr(d); | |
| 517 | OPERATOR(WORD); | |
| 518 | case 's': case 'S': | |
| 519 | SNARFWORD; | |
| 520 | if (strEQ(d,"s")) { | |
| 521 | s = scansubst(s); | |
| 522 | TERM(SUBST); | |
| 523 | } | |
| 524 | if (strEQ(d,"shift")) | |
| 525 | TERM(SHIFT); | |
| 526 | if (strEQ(d,"split")) | |
| 527 | TERM(SPLIT); | |
| 528 | if (strEQ(d,"substr")) | |
| 529 | FUN3(O_SUBSTR); | |
| 530 | if (strEQ(d,"sprintf")) | |
| 531 | OPERATOR(SPRINTF); | |
| 532 | if (strEQ(d,"sub")) | |
| 533 | OPERATOR(SUB); | |
| 534 | if (strEQ(d,"select")) | |
| 535 | OPERATOR(SELECT); | |
| 536 | if (strEQ(d,"seek")) | |
| 537 | OPERATOR(SEEK); | |
| 538 | if (strEQ(d,"stat")) | |
| 539 | OPERATOR(STAT); | |
| 540 | if (strEQ(d,"study")) { | |
| 541 | sawstudy++; | |
| 542 | LFUN(O_STUDY); | |
| 543 | } | |
| 544 | if (strEQ(d,"sqrt")) | |
| 545 | FUN1(O_SQRT); | |
| 546 | if (strEQ(d,"sleep")) | |
| 547 | UNI(O_SLEEP); | |
| 548 | if (strEQ(d,"system")) { | |
| 549 | yylval.ival = O_SYSTEM; | |
| 550 | OPERATOR(LISTOP); | |
| 551 | } | |
| 552 | if (strEQ(d,"symlink")) | |
| 553 | FUN2(O_SYMLINK); | |
| 554 | if (strEQ(d,"sort")) { | |
| 555 | yylval.ival = O_SORT; | |
| 556 | OPERATOR(LISTOP); | |
| 557 | } | |
| 558 | yylval.cval = savestr(d); | |
| 559 | OPERATOR(WORD); | |
| 560 | case 't': case 'T': | |
| 561 | SNARFWORD; | |
| 562 | if (strEQ(d,"tr")) { | |
| 563 | s = scantrans(s); | |
| 564 | TERM(TRANS); | |
| 565 | } | |
| 566 | if (strEQ(d,"tell")) | |
| 567 | TERM(TELL); | |
| 568 | if (strEQ(d,"time")) | |
| 569 | FUN0(O_TIME); | |
| 570 | if (strEQ(d,"times")) | |
| 571 | FUN0(O_TMS); | |
| 572 | yylval.cval = savestr(d); | |
| 573 | OPERATOR(WORD); | |
| 574 | case 'u': case 'U': | |
| 575 | SNARFWORD; | |
| 576 | if (strEQ(d,"using")) | |
| 577 | OPERATOR(USING); | |
| 578 | if (strEQ(d,"until")) { | |
| 579 | yylval.ival = line; | |
| 580 | OPERATOR(UNTIL); | |
| 581 | } | |
| 582 | if (strEQ(d,"unless")) { | |
| 583 | yylval.ival = line; | |
| 584 | OPERATOR(UNLESS); | |
| 585 | } | |
| 586 | if (strEQ(d,"umask")) | |
| 587 | FUN1(O_UMASK); | |
| 588 | if (strEQ(d,"unshift")) { | |
| 589 | yylval.ival = O_UNSHIFT; | |
| 590 | OPERATOR(PUSH); | |
| 591 | } | |
| 592 | if (strEQ(d,"unlink")) { | |
| 593 | yylval.ival = O_UNLINK; | |
| 594 | OPERATOR(LISTOP); | |
| 595 | } | |
| 596 | if (strEQ(d,"utime")) { | |
| 597 | yylval.ival = O_UTIME; | |
| 598 | OPERATOR(LISTOP); | |
| 599 | } | |
| 600 | yylval.cval = savestr(d); | |
| 601 | OPERATOR(WORD); | |
| 602 | case 'v': case 'V': | |
| 603 | SNARFWORD; | |
| 604 | if (strEQ(d,"values")) | |
| 605 | SFUN(O_VALUES); | |
| 606 | yylval.cval = savestr(d); | |
| 607 | OPERATOR(WORD); | |
| 608 | case 'w': case 'W': | |
| 609 | SNARFWORD; | |
| 610 | if (strEQ(d,"write")) | |
| 611 | TERM(WRITE); | |
| 612 | if (strEQ(d,"while")) { | |
| 613 | yylval.ival = line; | |
| 614 | OPERATOR(WHILE); | |
| 615 | } | |
| 616 | if (strEQ(d,"wait")) | |
| 617 | FUN0(O_WAIT); | |
| 618 | yylval.cval = savestr(d); | |
| 619 | OPERATOR(WORD); | |
| 620 | case 'x': case 'X': | |
| 621 | SNARFWORD; | |
| 622 | if (!expectterm && strEQ(d,"x")) | |
| 623 | OPERATOR('x'); | |
| 624 | yylval.cval = savestr(d); | |
| 625 | OPERATOR(WORD); | |
| 626 | case 'y': case 'Y': | |
| 627 | SNARFWORD; | |
| 628 | if (strEQ(d,"y")) { | |
| 629 | s = scantrans(s); | |
| 630 | TERM(TRANS); | |
| 631 | } | |
| 632 | yylval.cval = savestr(d); | |
| 633 | OPERATOR(WORD); | |
| 634 | case 'z': case 'Z': | |
| 635 | SNARFWORD; | |
| 636 | yylval.cval = savestr(d); | |
| 637 | OPERATOR(WORD); | |
| 638 | } | |
| 639 | } | |
| 640 | ||
| 641 | char * | |
| 642 | scanreg(s,dest) | |
| 643 | register char *s; | |
| 644 | char *dest; | |
| 645 | { | |
| 646 | register char *d; | |
| 647 | ||
| 648 | s++; | |
| 649 | d = dest; | |
| 650 | if (isdigit(*s)) { | |
| 651 | while (isdigit(*s) || *s == '_') | |
| 652 | *d++ = *s++; | |
| 653 | } | |
| 654 | else { | |
| 655 | while (isalpha(*s) || isdigit(*s) || *s == '_') | |
| 656 | *d++ = *s++; | |
| 657 | } | |
| 658 | *d = '\0'; | |
| 659 | d = dest; | |
| 660 | if (!*d) { | |
| 661 | *d = *s++; | |
| 662 | if (*d == '{') { | |
| 663 | d = dest; | |
| 664 | while (*s && *s != '}') | |
| 665 | *d++ = *s++; | |
| 666 | *d = '\0'; | |
| 667 | d = dest; | |
| 668 | if (*s) | |
| 669 | s++; | |
| 670 | } | |
| 671 | else | |
| 672 | d[1] = '\0'; | |
| 673 | } | |
| 674 | if (*d == '^' && !isspace(*s)) | |
| 675 | *d = *s++ & 31; | |
| 676 | return s; | |
| 677 | } | |
| 678 | ||
| 679 | STR * | |
| 680 | scanconst(string) | |
| 681 | char *string; | |
| 682 | { | |
| 683 | register STR *retstr; | |
| 684 | register char *t; | |
| 685 | register char *d; | |
| 686 | ||
| 687 | if (index(string,'|')) { | |
| 688 | return Nullstr; | |
| 689 | } | |
| 690 | retstr = str_make(string); | |
| 691 | t = str_get(retstr); | |
| 692 | *(long*)&retstr->str_nval = 100; | |
| 693 | for (d=t; *d; ) { | |
| 694 | switch (*d) { | |
| 695 | case '.': case '[': case '$': case '(': case ')': case '|': | |
| 696 | *d = '\0'; | |
| 697 | break; | |
| 698 | case '\\': | |
| 699 | if (index("wWbB0123456789sSdD",d[1])) { | |
| 700 | *d = '\0'; | |
| 701 | break; | |
| 702 | } | |
| 703 | strcpy(d,d+1); | |
| 704 | switch(*d) { | |
| 705 | case 'n': | |
| 706 | *d = '\n'; | |
| 707 | break; | |
| 708 | case 't': | |
| 709 | *d = '\t'; | |
| 710 | break; | |
| 711 | case 'f': | |
| 712 | *d = '\f'; | |
| 713 | break; | |
| 714 | case 'r': | |
| 715 | *d = '\r'; | |
| 716 | break; | |
| 717 | } | |
| 718 | /* FALL THROUGH */ | |
| 719 | default: | |
| 720 | if (d[1] == '*' || d[1] == '+' || d[1] == '?') { | |
| 721 | *d = '\0'; | |
| 722 | break; | |
| 723 | } | |
| 724 | d++; | |
| 725 | } | |
| 726 | } | |
| 727 | if (!*t) { | |
| 728 | str_free(retstr); | |
| 729 | return Nullstr; | |
| 730 | } | |
| 731 | retstr->str_cur = strlen(retstr->str_ptr); | |
| 732 | return retstr; | |
| 733 | } | |
| 734 | ||
| 735 | char * | |
| 736 | scanpat(s) | |
| 737 | register char *s; | |
| 738 | { | |
| 739 | register SPAT *spat = (SPAT *) safemalloc(sizeof (SPAT)); | |
| 740 | register char *d; | |
| 741 | ||
| 742 | bzero((char *)spat, sizeof(SPAT)); | |
| 743 | spat->spat_next = spat_root; /* link into spat list */ | |
| 744 | spat_root = spat; | |
| 745 | ||
| 746 | switch (*s++) { | |
| 747 | case 'm': | |
| 748 | s++; | |
| 749 | break; | |
| 750 | case '/': | |
| 751 | break; | |
| 752 | case '?': | |
| 753 | spat->spat_flags |= SPAT_ONCE; | |
| 754 | break; | |
| 755 | default: | |
| 756 | fatal("panic: scanpat"); | |
| 757 | } | |
| 758 | s = cpytill(tokenbuf,s,s[-1]); | |
| 759 | if (!*s) | |
| 760 | fatal("Search pattern not terminated"); | |
| 761 | s++; | |
| 762 | if (*s == 'i') { | |
| 763 | s++; | |
| 764 | spat->spat_flags |= SPAT_FOLD; | |
| 765 | } | |
| 766 | for (d=tokenbuf; *d; d++) { | |
| 767 | if (*d == '$' && d[1] && d[-1] != '\\' && d[1] != '|') { | |
| 768 | register ARG *arg; | |
| 769 | ||
| 770 | spat->spat_runtime = arg = op_new(1); | |
| 771 | arg->arg_type = O_ITEM; | |
| 772 | arg[1].arg_type = A_DOUBLE; | |
| 773 | arg[1].arg_ptr.arg_str = str_make(tokenbuf); | |
| 774 | goto got_pat; /* skip compiling for now */ | |
| 775 | } | |
| 776 | } | |
| 777 | if (!(spat->spat_flags & SPAT_FOLD)) { | |
| 778 | if (*tokenbuf == '^') { | |
| 779 | spat->spat_short = scanconst(tokenbuf+1); | |
| 780 | if (spat->spat_short) { | |
| 781 | spat->spat_slen = strlen(spat->spat_short->str_ptr); | |
| 782 | if (spat->spat_slen == strlen(tokenbuf+1)) | |
| 783 | spat->spat_flags |= SPAT_ALL; | |
| 784 | } | |
| 785 | } | |
| 786 | else { | |
| 787 | spat->spat_flags |= SPAT_SCANFIRST; | |
| 788 | spat->spat_short = scanconst(tokenbuf); | |
| 789 | if (spat->spat_short) { | |
| 790 | spat->spat_slen = strlen(spat->spat_short->str_ptr); | |
| 791 | if (spat->spat_slen == strlen(tokenbuf)) | |
| 792 | spat->spat_flags |= SPAT_ALL; | |
| 793 | } | |
| 794 | } | |
| 795 | } | |
| 796 | spat->spat_regexp = regcomp(tokenbuf,spat->spat_flags & SPAT_FOLD,1); | |
| 797 | hoistmust(spat); | |
| 798 | got_pat: | |
| 799 | yylval.arg = make_match(O_MATCH,stab2arg(A_STAB,defstab),spat); | |
| 800 | return s; | |
| 801 | } | |
| 802 | ||
| 803 | char * | |
| 804 | scansubst(s) | |
| 805 | register char *s; | |
| 806 | { | |
| 807 | register SPAT *spat = (SPAT *) safemalloc(sizeof (SPAT)); | |
| 808 | register char *d; | |
| 809 | ||
| 810 | bzero((char *)spat, sizeof(SPAT)); | |
| 811 | spat->spat_next = spat_root; /* link into spat list */ | |
| 812 | spat_root = spat; | |
| 813 | ||
| 814 | s = cpytill(tokenbuf,s+1,*s); | |
| 815 | if (!*s) | |
| 816 | fatal("Substitution pattern not terminated"); | |
| 817 | for (d=tokenbuf; *d; d++) { | |
| 818 | if (*d == '$' && d[1] && d[-1] != '\\' && d[1] != '|') { | |
| 819 | register ARG *arg; | |
| 820 | ||
| 821 | spat->spat_runtime = arg = op_new(1); | |
| 822 | arg->arg_type = O_ITEM; | |
| 823 | arg[1].arg_type = A_DOUBLE; | |
| 824 | arg[1].arg_ptr.arg_str = str_make(tokenbuf); | |
| 825 | goto get_repl; /* skip compiling for now */ | |
| 826 | } | |
| 827 | } | |
| 828 | if (*tokenbuf == '^') { | |
| 829 | spat->spat_short = scanconst(tokenbuf+1); | |
| 830 | if (spat->spat_short) | |
| 831 | spat->spat_slen = strlen(spat->spat_short->str_ptr); | |
| 832 | } | |
| 833 | else { | |
| 834 | spat->spat_flags |= SPAT_SCANFIRST; | |
| 835 | spat->spat_short = scanconst(tokenbuf); | |
| 836 | if (spat->spat_short) | |
| 837 | spat->spat_slen = strlen(spat->spat_short->str_ptr); | |
| 838 | } | |
| 839 | d = savestr(tokenbuf); | |
| 840 | get_repl: | |
| 841 | s = scanstr(s); | |
| 842 | if (!*s) | |
| 843 | fatal("Substitution replacement not terminated"); | |
| 844 | spat->spat_repl = yylval.arg; | |
| 845 | spat->spat_flags |= SPAT_ONCE; | |
| 846 | while (*s == 'g' || *s == 'i') { | |
| 847 | if (*s == 'g') { | |
| 848 | s++; | |
| 849 | spat->spat_flags &= ~SPAT_ONCE; | |
| 850 | } | |
| 851 | if (*s == 'i') { | |
| 852 | s++; | |
| 853 | spat->spat_flags |= SPAT_FOLD; | |
| 854 | } | |
| 855 | } | |
| 856 | if (!spat->spat_runtime) { | |
| 857 | spat->spat_regexp = regcomp(d, spat->spat_flags & SPAT_FOLD,1); | |
| 858 | hoistmust(spat); | |
| 859 | safefree(d); | |
| 860 | } | |
| 861 | if (spat->spat_flags & SPAT_FOLD) { /* Oops, disable optimization */ | |
| 862 | str_free(spat->spat_short); | |
| 863 | spat->spat_short = Nullstr; | |
| 864 | spat->spat_slen = 0; | |
| 865 | } | |
| 866 | yylval.arg = make_match(O_SUBST,stab2arg(A_STAB,defstab),spat); | |
| 867 | return s; | |
| 868 | } | |
| 869 | ||
| 870 | hoistmust(spat) | |
| 871 | register SPAT *spat; | |
| 872 | { | |
| 873 | if (spat->spat_regexp->regmust) { /* is there a better short-circuit? */ | |
| 874 | if (spat->spat_short && | |
| 875 | strEQ(spat->spat_short->str_ptr,spat->spat_regexp->regmust->str_ptr)){ | |
| 876 | if (spat->spat_flags & SPAT_SCANFIRST) { | |
| 877 | str_free(spat->spat_short); | |
| 878 | spat->spat_short = Nullstr; | |
| 879 | } | |
| 880 | else { | |
| 881 | str_free(spat->spat_regexp->regmust); | |
| 882 | spat->spat_regexp->regmust = Nullstr; | |
| 883 | return; | |
| 884 | } | |
| 885 | } | |
| 886 | if (!spat->spat_short || /* promote the better string */ | |
| 887 | ((spat->spat_flags & SPAT_SCANFIRST) && | |
| 888 | (spat->spat_short->str_cur < spat->spat_regexp->regmust->str_cur) )){ | |
| 889 | str_free(spat->spat_short); /* ok if null */ | |
| 890 | spat->spat_short = spat->spat_regexp->regmust; | |
| 891 | spat->spat_regexp->regmust = Nullstr; | |
| 892 | spat->spat_flags |= SPAT_SCANFIRST; | |
| 893 | } | |
| 894 | } | |
| 895 | } | |
| 896 | ||
| 897 | char * | |
| 898 | expand_charset(s) | |
| 899 | register char *s; | |
| 900 | { | |
| 901 | char t[512]; | |
| 902 | register char *d = t; | |
| 903 | register int i; | |
| 904 | ||
| 905 | while (*s) { | |
| 906 | if (s[1] == '-' && s[2]) { | |
| 907 | for (i = s[0]; i <= s[2]; i++) | |
| 908 | *d++ = i; | |
| 909 | s += 3; | |
| 910 | } | |
| 911 | else | |
| 912 | *d++ = *s++; | |
| 913 | } | |
| 914 | *d = '\0'; | |
| 915 | return savestr(t); | |
| 916 | } | |
| 917 | ||
| 918 | char * | |
| 919 | scantrans(s) | |
| 920 | register char *s; | |
| 921 | { | |
| 922 | ARG *arg = | |
| 923 | l(make_op(O_TRANS,2,stab2arg(A_STAB,defstab),Nullarg,Nullarg,0)); | |
| 924 | register char *t; | |
| 925 | register char *r; | |
| 926 | register char *tbl = safemalloc(256); | |
| 927 | register int i; | |
| 13281fa4 | 928 | register int j; |
| 378cc40b LW |
929 | |
| 930 | arg[2].arg_type = A_NULL; | |
| 931 | arg[2].arg_ptr.arg_cval = tbl; | |
| 932 | for (i=0; i<256; i++) | |
| 933 | tbl[i] = 0; | |
| 934 | s = scanstr(s); | |
| 935 | if (!*s) | |
| 936 | fatal("Translation pattern not terminated"); | |
| 937 | t = expand_charset(str_get(yylval.arg[1].arg_ptr.arg_str)); | |
| 938 | free_arg(yylval.arg); | |
| 939 | s = scanstr(s-1); | |
| 940 | if (!*s) | |
| 941 | fatal("Translation replacement not terminated"); | |
| 942 | r = expand_charset(str_get(yylval.arg[1].arg_ptr.arg_str)); | |
| 943 | free_arg(yylval.arg); | |
| 944 | yylval.arg = arg; | |
| 945 | if (!*r) { | |
| 946 | safefree(r); | |
| 947 | r = t; | |
| 948 | } | |
| 13281fa4 LW |
949 | for (i = 0, j = 0; t[i]; i++,j++) { |
| 950 | if (!r[j]) | |
| 951 | --j; | |
| 952 | tbl[t[i] & 0377] = r[j]; | |
| 378cc40b LW |
953 | } |
| 954 | if (r != t) | |
| 955 | safefree(r); | |
| 956 | safefree(t); | |
| 957 | return s; | |
| 958 | } | |
| 959 | ||
| 960 | char * | |
| 961 | scanstr(s) | |
| 962 | register char *s; | |
| 963 | { | |
| 964 | register char term; | |
| 965 | register char *d; | |
| 966 | register ARG *arg; | |
| 967 | register bool makesingle = FALSE; | |
| 968 | register STAB *stab; | |
| 969 | char *leave = "\\$nrtfb0123456789"; /* which backslash sequences to keep */ | |
| 970 | ||
| 971 | arg = op_new(1); | |
| 972 | yylval.arg = arg; | |
| 973 | arg->arg_type = O_ITEM; | |
| 974 | ||
| 975 | switch (*s) { | |
| 976 | default: /* a substitution replacement */ | |
| 977 | arg[1].arg_type = A_DOUBLE; | |
| 978 | makesingle = TRUE; /* maybe disable runtime scanning */ | |
| 979 | term = *s; | |
| 980 | if (term == '\'') | |
| 981 | leave = Nullch; | |
| 982 | goto snarf_it; | |
| 983 | case '0': | |
| 984 | { | |
| 985 | long i; | |
| 986 | int shift; | |
| 987 | ||
| 988 | arg[1].arg_type = A_SINGLE; | |
| 989 | if (s[1] == 'x') { | |
| 990 | shift = 4; | |
| 991 | s += 2; | |
| 992 | } | |
| 993 | else if (s[1] == '.') | |
| 994 | goto decimal; | |
| 995 | else | |
| 996 | shift = 3; | |
| 997 | i = 0; | |
| 998 | for (;;) { | |
| 999 | switch (*s) { | |
| 1000 | default: | |
| 1001 | goto out; | |
| 1002 | case '8': case '9': | |
| 1003 | if (shift != 4) | |
| 1004 | fatal("Illegal octal digit"); | |
| 1005 | /* FALL THROUGH */ | |
| 1006 | case '0': case '1': case '2': case '3': case '4': | |
| 1007 | case '5': case '6': case '7': | |
| 1008 | i <<= shift; | |
| 1009 | i += *s++ & 15; | |
| 1010 | break; | |
| 1011 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': | |
| 1012 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
| 1013 | if (shift != 4) | |
| 1014 | goto out; | |
| 1015 | i <<= 4; | |
| 1016 | i += (*s++ & 7) + 9; | |
| 1017 | break; | |
| 1018 | } | |
| 1019 | } | |
| 1020 | out: | |
| 1021 | sprintf(tokenbuf,"%ld",i); | |
| 1022 | arg[1].arg_ptr.arg_str = str_make(tokenbuf); | |
| 1023 | } | |
| 1024 | break; | |
| 1025 | case '1': case '2': case '3': case '4': case '5': | |
| 1026 | case '6': case '7': case '8': case '9': case '.': | |
| 1027 | decimal: | |
| 1028 | arg[1].arg_type = A_SINGLE; | |
| 1029 | d = tokenbuf; | |
| 1030 | while (isdigit(*s) || *s == '_') { | |
| 1031 | if (*s == '_') | |
| 1032 | s++; | |
| 1033 | else | |
| 1034 | *d++ = *s++; | |
| 1035 | } | |
| 1036 | if (*s == '.' && index("0123456789eE",s[1])) { | |
| 1037 | *d++ = *s++; | |
| 1038 | while (isdigit(*s) || *s == '_') { | |
| 1039 | if (*s == '_') | |
| 1040 | s++; | |
| 1041 | else | |
| 1042 | *d++ = *s++; | |
| 1043 | } | |
| 1044 | } | |
| 1045 | if (index("eE",*s) && index("+-0123456789",s[1])) { | |
| 1046 | *d++ = *s++; | |
| 1047 | if (*s == '+' || *s == '-') | |
| 1048 | *d++ = *s++; | |
| 1049 | while (isdigit(*s)) | |
| 1050 | *d++ = *s++; | |
| 1051 | } | |
| 1052 | *d = '\0'; | |
| 1053 | arg[1].arg_ptr.arg_str = str_make(tokenbuf); | |
| 1054 | break; | |
| 1055 | case '\'': | |
| 1056 | arg[1].arg_type = A_SINGLE; | |
| 1057 | term = *s; | |
| 1058 | leave = Nullch; | |
| 1059 | goto snarf_it; | |
| 1060 | ||
| 1061 | case '<': | |
| 1062 | d = tokenbuf; | |
| 1063 | s = cpytill(d,s+1,'>'); | |
| 1064 | if (*s) | |
| 1065 | s++; | |
| 1066 | if (*d == '$') d++; | |
| 1067 | while (*d && (isalpha(*d) || isdigit(*d) || *d == '_')) d++; | |
| 1068 | if (*d) { | |
| 1069 | d = tokenbuf; | |
| 1070 | arg[1].arg_type = A_GLOB; | |
| 1071 | d = savestr(d); | |
| 1072 | arg[1].arg_ptr.arg_stab = stab = genstab(); | |
| 1073 | stab->stab_io = stio_new(); | |
| 1074 | stab->stab_val = str_make(d); | |
| 1075 | } | |
| 1076 | else { | |
| 1077 | d = tokenbuf; | |
| 1078 | if (!*d) | |
| 1079 | strcpy(d,"ARGV"); | |
| 1080 | if (*d == '$') { | |
| 1081 | arg[1].arg_type = A_INDREAD; | |
| 1082 | arg[1].arg_ptr.arg_stab = stabent(d+1,TRUE); | |
| 1083 | } | |
| 1084 | else { | |
| 1085 | arg[1].arg_type = A_READ; | |
| 1086 | if (rsfp == stdin && strEQ(d,"stdin")) | |
| 1087 | fatal("Can't get both program and data from <stdin>"); | |
| 1088 | arg[1].arg_ptr.arg_stab = stabent(d,TRUE); | |
| 1089 | arg[1].arg_ptr.arg_stab->stab_io = stio_new(); | |
| 1090 | if (strEQ(d,"ARGV")) { | |
| 1091 | aadd(arg[1].arg_ptr.arg_stab); | |
| 1092 | arg[1].arg_ptr.arg_stab->stab_io->flags |= | |
| 1093 | IOF_ARGV|IOF_START; | |
| 1094 | } | |
| 1095 | } | |
| 1096 | } | |
| 1097 | break; | |
| 1098 | case '"': | |
| 1099 | arg[1].arg_type = A_DOUBLE; | |
| 1100 | makesingle = TRUE; /* maybe disable runtime scanning */ | |
| 1101 | term = *s; | |
| 1102 | goto snarf_it; | |
| 1103 | case '`': | |
| 1104 | arg[1].arg_type = A_BACKTICK; | |
| 1105 | term = *s; | |
| 1106 | snarf_it: | |
| 1107 | { | |
| 1108 | STR *tmpstr; | |
| 1109 | int sqstart = line; | |
| 1110 | char *tmps; | |
| 1111 | ||
| 1112 | tmpstr = str_new(strlen(s)); | |
| 1113 | s = str_append_till(tmpstr,s+1,term,leave); | |
| 1114 | while (!*s) { /* multiple line string? */ | |
| 1115 | s = str_gets(linestr, rsfp); | |
| 1116 | if (!s) { | |
| 1117 | line = sqstart; | |
| 1118 | fatal("EOF in string"); | |
| 1119 | } | |
| 1120 | line++; | |
| 1121 | s = str_append_till(tmpstr,s,term,leave); | |
| 1122 | } | |
| 1123 | s++; | |
| 1124 | if (term == '\'') { | |
| 1125 | arg[1].arg_ptr.arg_str = tmpstr; | |
| 1126 | break; | |
| 1127 | } | |
| 1128 | tmps = s; | |
| 1129 | s = tmpstr->str_ptr; | |
| 1130 | while (*s) { /* see if we can make SINGLE */ | |
| 1131 | if (*s == '\\' && s[1] && isdigit(s[1]) && !isdigit(s[2]) && | |
| 1132 | !index("`\"",term) ) | |
| 1133 | *s = '$'; /* grandfather \digit in subst */ | |
| 1134 | if (*s == '$' && s[1] && s[1] != ')' && s[1] != '|') { | |
| 1135 | makesingle = FALSE; /* force interpretation */ | |
| 1136 | } | |
| 1137 | else if (*s == '\\' && s[1]) { | |
| 1138 | s++; | |
| 1139 | } | |
| 1140 | s++; | |
| 1141 | } | |
| 1142 | s = d = tmpstr->str_ptr; /* assuming shrinkage only */ | |
| 1143 | while (*s) { | |
| 1144 | if (*s == '$' && s[1] && s[1] != ')' && s[1] != '|') { | |
| 1145 | int len; | |
| 1146 | ||
| 1147 | len = scanreg(s,tokenbuf) - s; | |
| 1148 | stabent(tokenbuf,TRUE); /* make sure it's created */ | |
| 1149 | while (len--) | |
| 1150 | *d++ = *s++; | |
| 1151 | continue; | |
| 1152 | } | |
| 1153 | else if (*s == '\\' && s[1]) { | |
| 1154 | s++; | |
| 1155 | switch (*s) { | |
| 1156 | default: | |
| 1157 | if (!makesingle && (!leave || index(leave,*s))) | |
| 1158 | *d++ = '\\'; | |
| 1159 | *d++ = *s++; | |
| 1160 | continue; | |
| 1161 | case '0': case '1': case '2': case '3': | |
| 1162 | case '4': case '5': case '6': case '7': | |
| 1163 | *d = *s++ - '0'; | |
| 1164 | if (index("01234567",*s)) { | |
| 1165 | *d <<= 3; | |
| 1166 | *d += *s++ - '0'; | |
| 1167 | } | |
| 1168 | if (index("01234567",*s)) { | |
| 1169 | *d <<= 3; | |
| 1170 | *d += *s++ - '0'; | |
| 1171 | } | |
| 1172 | d++; | |
| 1173 | continue; | |
| 1174 | case 'b': | |
| 1175 | *d++ = '\b'; | |
| 1176 | break; | |
| 1177 | case 'n': | |
| 1178 | *d++ = '\n'; | |
| 1179 | break; | |
| 1180 | case 'r': | |
| 1181 | *d++ = '\r'; | |
| 1182 | break; | |
| 1183 | case 'f': | |
| 1184 | *d++ = '\f'; | |
| 1185 | break; | |
| 1186 | case 't': | |
| 1187 | *d++ = '\t'; | |
| 1188 | break; | |
| 1189 | } | |
| 1190 | s++; | |
| 1191 | continue; | |
| 1192 | } | |
| 1193 | *d++ = *s++; | |
| 1194 | } | |
| 1195 | *d = '\0'; | |
| 1196 | ||
| 1197 | if (arg[1].arg_type == A_DOUBLE && makesingle) | |
| 1198 | arg[1].arg_type = A_SINGLE; /* now we can optimize on it */ | |
| 1199 | ||
| 1200 | tmpstr->str_cur = d - tmpstr->str_ptr; /* XXX cheat */ | |
| 1201 | arg[1].arg_ptr.arg_str = tmpstr; | |
| 1202 | s = tmps; | |
| 1203 | break; | |
| 1204 | } | |
| 1205 | } | |
| 1206 | return s; | |
| 1207 | } | |
| 1208 | ||
| 1209 | FCMD * | |
| 1210 | load_format() | |
| 1211 | { | |
| 1212 | FCMD froot; | |
| 1213 | FCMD *flinebeg; | |
| 1214 | register FCMD *fprev = &froot; | |
| 1215 | register FCMD *fcmd; | |
| 1216 | register char *s; | |
| 1217 | register char *t; | |
| 1218 | register char tmpchar; | |
| 1219 | bool noblank; | |
| 1220 | ||
| 1221 | while ((s = str_gets(linestr,rsfp)) != Nullch) { | |
| 1222 | line++; | |
| 1223 | if (strEQ(s,".\n")) { | |
| 1224 | bufptr = s; | |
| 1225 | return froot.f_next; | |
| 1226 | } | |
| 1227 | if (*s == '#') | |
| 1228 | continue; | |
| 1229 | flinebeg = Nullfcmd; | |
| 1230 | noblank = FALSE; | |
| 1231 | while (*s) { | |
| 1232 | fcmd = (FCMD *)safemalloc(sizeof (FCMD)); | |
| 1233 | bzero((char*)fcmd, sizeof (FCMD)); | |
| 1234 | fprev->f_next = fcmd; | |
| 1235 | fprev = fcmd; | |
| 1236 | for (t=s; *t && *t != '@' && *t != '^'; t++) { | |
| 1237 | if (*t == '~') { | |
| 1238 | noblank = TRUE; | |
| 1239 | *t = ' '; | |
| 1240 | } | |
| 1241 | } | |
| 1242 | tmpchar = *t; | |
| 1243 | *t = '\0'; | |
| 1244 | fcmd->f_pre = savestr(s); | |
| 1245 | fcmd->f_presize = strlen(s); | |
| 1246 | *t = tmpchar; | |
| 1247 | s = t; | |
| 1248 | if (!*s) { | |
| 1249 | if (noblank) | |
| 1250 | fcmd->f_flags |= FC_NOBLANK; | |
| 1251 | break; | |
| 1252 | } | |
| 1253 | if (!flinebeg) | |
| 1254 | flinebeg = fcmd; /* start values here */ | |
| 1255 | if (*s++ == '^') | |
| 1256 | fcmd->f_flags |= FC_CHOP; /* for doing text filling */ | |
| 1257 | switch (*s) { | |
| 1258 | case '*': | |
| 1259 | fcmd->f_type = F_LINES; | |
| 1260 | *s = '\0'; | |
| 1261 | break; | |
| 1262 | case '<': | |
| 1263 | fcmd->f_type = F_LEFT; | |
| 1264 | while (*s == '<') | |
| 1265 | s++; | |
| 1266 | break; | |
| 1267 | case '>': | |
| 1268 | fcmd->f_type = F_RIGHT; | |
| 1269 | while (*s == '>') | |
| 1270 | s++; | |
| 1271 | break; | |
| 1272 | case '|': | |
| 1273 | fcmd->f_type = F_CENTER; | |
| 1274 | while (*s == '|') | |
| 1275 | s++; | |
| 1276 | break; | |
| 1277 | default: | |
| 1278 | fcmd->f_type = F_LEFT; | |
| 1279 | break; | |
| 1280 | } | |
| 1281 | if (fcmd->f_flags & FC_CHOP && *s == '.') { | |
| 1282 | fcmd->f_flags |= FC_MORE; | |
| 1283 | while (*s == '.') | |
| 1284 | s++; | |
| 1285 | } | |
| 1286 | fcmd->f_size = s-t; | |
| 1287 | } | |
| 1288 | if (flinebeg) { | |
| 1289 | again: | |
| 1290 | if ((bufptr = str_gets(linestr ,rsfp)) == Nullch) | |
| 1291 | goto badform; | |
| 1292 | line++; | |
| 1293 | if (strEQ(bufptr,".\n")) { | |
| 1294 | yyerror("Missing values line"); | |
| 1295 | return froot.f_next; | |
| 1296 | } | |
| 1297 | if (*bufptr == '#') | |
| 1298 | goto again; | |
| 1299 | lex_newlines = TRUE; | |
| 1300 | while (flinebeg || *bufptr) { | |
| 1301 | switch(yylex()) { | |
| 1302 | default: | |
| 1303 | yyerror("Bad value in format"); | |
| 1304 | *bufptr = '\0'; | |
| 1305 | break; | |
| 1306 | case '\n': | |
| 1307 | if (flinebeg) | |
| 1308 | yyerror("Missing value in format"); | |
| 1309 | *bufptr = '\0'; | |
| 1310 | break; | |
| 1311 | case REG: | |
| 1312 | yylval.arg = stab2arg(A_LVAL,yylval.stabval); | |
| 1313 | /* FALL THROUGH */ | |
| 1314 | case RSTRING: | |
| 1315 | if (!flinebeg) | |
| 1316 | yyerror("Extra value in format"); | |
| 1317 | else { | |
| 1318 | flinebeg->f_expr = yylval.arg; | |
| 1319 | do { | |
| 1320 | flinebeg = flinebeg->f_next; | |
| 1321 | } while (flinebeg && flinebeg->f_size == 0); | |
| 1322 | } | |
| 1323 | break; | |
| 1324 | case ',': case ';': | |
| 1325 | continue; | |
| 1326 | } | |
| 1327 | } | |
| 1328 | lex_newlines = FALSE; | |
| 1329 | } | |
| 1330 | } | |
| 1331 | badform: | |
| 1332 | bufptr = str_get(linestr); | |
| 1333 | yyerror("Format not terminated"); | |
| 1334 | return froot.f_next; | |
| 1335 | } |