| 1 | /**************************************************************** |
| 2 | Copyright (C) Lucent Technologies 1997 |
| 3 | All Rights Reserved |
| 4 | |
| 5 | Permission to use, copy, modify, and distribute this software and |
| 6 | its documentation for any purpose and without fee is hereby |
| 7 | granted, provided that the above copyright notice appear in all |
| 8 | copies and that both that the copyright notice and this |
| 9 | permission notice and warranty disclaimer appear in supporting |
| 10 | documentation, and that the name Lucent Technologies or any of |
| 11 | its entities not be used in advertising or publicity pertaining |
| 12 | to distribution of the software without specific, written prior |
| 13 | permission. |
| 14 | |
| 15 | LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| 16 | INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. |
| 17 | IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY |
| 18 | SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 19 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER |
| 20 | IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, |
| 21 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF |
| 22 | THIS SOFTWARE. |
| 23 | ****************************************************************/ |
| 24 | |
| 25 | #define DEBUG |
| 26 | #include <stdio.h> |
| 27 | #include <string.h> |
| 28 | #include <ctype.h> |
| 29 | #include <errno.h> |
| 30 | #include <stdlib.h> |
| 31 | #include <stdarg.h> |
| 32 | #include "awk.h" |
| 33 | #include "ytab.h" |
| 34 | |
| 35 | FILE *infile = NULL; |
| 36 | char *file = ""; |
| 37 | char *record; |
| 38 | int recsize = RECSIZE; |
| 39 | char *fields; |
| 40 | int fieldssize = RECSIZE; |
| 41 | |
| 42 | Cell **fldtab; /* pointers to Cells */ |
| 43 | char inputFS[100] = " "; |
| 44 | |
| 45 | #define MAXFLD 200 |
| 46 | int nfields = MAXFLD; /* last allocated slot for $i */ |
| 47 | |
| 48 | int donefld; /* 1 = implies rec broken into fields */ |
| 49 | int donerec; /* 1 = record is valid (no flds have changed) */ |
| 50 | |
| 51 | int lastfld = 0; /* last used field */ |
| 52 | int argno = 1; /* current input argument number */ |
| 53 | extern Awkfloat *ARGC; |
| 54 | |
| 55 | static Cell dollar0 = { OCELL, CFLD, NULL, "", 0.0, REC|STR|DONTFREE }; |
| 56 | static Cell dollar1 = { OCELL, CFLD, NULL, "", 0.0, FLD|STR|DONTFREE }; |
| 57 | |
| 58 | void recinit(unsigned int n) |
| 59 | { |
| 60 | if ( (record = (char *) malloc(n)) == NULL |
| 61 | || (fields = (char *) malloc(n)) == NULL |
| 62 | || (fldtab = (Cell **) malloc((nfields+1) * sizeof(Cell *))) == NULL |
| 63 | || (fldtab[0] = (Cell *) malloc(sizeof(Cell))) == NULL ) |
| 64 | FATAL("out of space for $0 and fields"); |
| 65 | *fldtab[0] = dollar0; |
| 66 | fldtab[0]->sval = record; |
| 67 | fldtab[0]->nval = tostring("0"); |
| 68 | makefields(1, nfields); |
| 69 | } |
| 70 | |
| 71 | void makefields(int n1, int n2) /* create $n1..$n2 inclusive */ |
| 72 | { |
| 73 | char temp[50]; |
| 74 | int i; |
| 75 | |
| 76 | for (i = n1; i <= n2; i++) { |
| 77 | fldtab[i] = (Cell *) malloc(sizeof (struct Cell)); |
| 78 | if (fldtab[i] == NULL) |
| 79 | FATAL("out of space in makefields %d", i); |
| 80 | *fldtab[i] = dollar1; |
| 81 | sprintf(temp, "%d", i); |
| 82 | fldtab[i]->nval = tostring(temp); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | void initgetrec(void) |
| 87 | { |
| 88 | int i; |
| 89 | char *p; |
| 90 | |
| 91 | for (i = 1; i < *ARGC; i++) { |
| 92 | if (!isclvar(p = getargv(i))) { /* find 1st real filename */ |
| 93 | setsval(lookup("FILENAME", symtab), getargv(i)); |
| 94 | return; |
| 95 | } |
| 96 | setclvar(p); /* a commandline assignment before filename */ |
| 97 | argno++; |
| 98 | } |
| 99 | infile = stdin; /* no filenames, so use stdin */ |
| 100 | } |
| 101 | |
| 102 | static int firsttime = 1; |
| 103 | |
| 104 | int getrec(char **pbuf, int *pbufsize, int isrecord) /* get next input record */ |
| 105 | { /* note: cares whether buf == record */ |
| 106 | int c; |
| 107 | char *buf = *pbuf; |
| 108 | uschar saveb0; |
| 109 | int bufsize = *pbufsize, savebufsize = bufsize; |
| 110 | |
| 111 | if (firsttime) { |
| 112 | firsttime = 0; |
| 113 | initgetrec(); |
| 114 | } |
| 115 | dprintf( ("RS=<%s>, FS=<%s>, ARGC=%g, FILENAME=%s\n", |
| 116 | *RS, *FS, *ARGC, *FILENAME) ); |
| 117 | if (isrecord) { |
| 118 | donefld = 0; |
| 119 | donerec = 1; |
| 120 | } |
| 121 | saveb0 = buf[0]; |
| 122 | buf[0] = 0; |
| 123 | while (argno < *ARGC || infile == stdin) { |
| 124 | dprintf( ("argno=%d, file=|%s|\n", argno, file) ); |
| 125 | if (infile == NULL) { /* have to open a new file */ |
| 126 | file = getargv(argno); |
| 127 | if (*file == '\0') { /* it's been zapped */ |
| 128 | argno++; |
| 129 | continue; |
| 130 | } |
| 131 | if (isclvar(file)) { /* a var=value arg */ |
| 132 | setclvar(file); |
| 133 | argno++; |
| 134 | continue; |
| 135 | } |
| 136 | *FILENAME = file; |
| 137 | dprintf( ("opening file %s\n", file) ); |
| 138 | if (*file == '-' && *(file+1) == '\0') |
| 139 | infile = stdin; |
| 140 | else if ((infile = fopen(file, "r")) == NULL) |
| 141 | FATAL("can't open file %s", file); |
| 142 | setfval(fnrloc, 0.0); |
| 143 | } |
| 144 | c = readrec(&buf, &bufsize, infile); |
| 145 | if (c != 0 || buf[0] != '\0') { /* normal record */ |
| 146 | if (isrecord) { |
| 147 | if (freeable(fldtab[0])) |
| 148 | xfree(fldtab[0]->sval); |
| 149 | fldtab[0]->sval = buf; /* buf == record */ |
| 150 | fldtab[0]->tval = REC | STR | DONTFREE; |
| 151 | if (is_number(fldtab[0]->sval)) { |
| 152 | fldtab[0]->fval = atof(fldtab[0]->sval); |
| 153 | fldtab[0]->tval |= NUM; |
| 154 | } |
| 155 | } |
| 156 | setfval(nrloc, nrloc->fval+1); |
| 157 | setfval(fnrloc, fnrloc->fval+1); |
| 158 | *pbuf = buf; |
| 159 | *pbufsize = bufsize; |
| 160 | return 1; |
| 161 | } |
| 162 | /* EOF arrived on this file; set up next */ |
| 163 | if (infile != stdin) |
| 164 | fclose(infile); |
| 165 | infile = NULL; |
| 166 | argno++; |
| 167 | } |
| 168 | buf[0] = saveb0; |
| 169 | *pbuf = buf; |
| 170 | *pbufsize = savebufsize; |
| 171 | return 0; /* true end of file */ |
| 172 | } |
| 173 | |
| 174 | void nextfile(void) |
| 175 | { |
| 176 | if (infile != stdin) |
| 177 | fclose(infile); |
| 178 | infile = NULL; |
| 179 | argno++; |
| 180 | } |
| 181 | |
| 182 | int readrec(char **pbuf, int *pbufsize, FILE *inf) /* read one record into buf */ |
| 183 | { |
| 184 | int sep, c; |
| 185 | char *rr, *buf = *pbuf; |
| 186 | int bufsize = *pbufsize; |
| 187 | |
| 188 | if (strlen(*FS) >= sizeof(inputFS)) |
| 189 | FATAL("field separator %.10s... is too long", *FS); |
| 190 | strcpy(inputFS, *FS); /* for subsequent field splitting */ |
| 191 | if ((sep = **RS) == 0) { |
| 192 | sep = '\n'; |
| 193 | while ((c=getc(inf)) == '\n' && c != EOF) /* skip leading \n's */ |
| 194 | ; |
| 195 | if (c != EOF) |
| 196 | ungetc(c, inf); |
| 197 | } |
| 198 | for (rr = buf; ; ) { |
| 199 | for (; (c=getc(inf)) != sep && c != EOF; ) { |
| 200 | if (rr-buf+1 > bufsize) |
| 201 | if (!adjbuf(&buf, &bufsize, 1+rr-buf, recsize, &rr, "readrec 1")) |
| 202 | FATAL("input record `%.30s...' too long", buf); |
| 203 | *rr++ = c; |
| 204 | } |
| 205 | if (**RS == sep || c == EOF) |
| 206 | break; |
| 207 | if ((c = getc(inf)) == '\n' || c == EOF) /* 2 in a row */ |
| 208 | break; |
| 209 | if (!adjbuf(&buf, &bufsize, 2+rr-buf, recsize, &rr, "readrec 2")) |
| 210 | FATAL("input record `%.30s...' too long", buf); |
| 211 | *rr++ = '\n'; |
| 212 | *rr++ = c; |
| 213 | } |
| 214 | if (!adjbuf(&buf, &bufsize, 1+rr-buf, recsize, &rr, "readrec 3")) |
| 215 | FATAL("input record `%.30s...' too long", buf); |
| 216 | *rr = 0; |
| 217 | dprintf( ("readrec saw <%s>, returns %d\n", buf, c == EOF && rr == buf ? 0 : 1) ); |
| 218 | *pbuf = buf; |
| 219 | *pbufsize = bufsize; |
| 220 | return c == EOF && rr == buf ? 0 : 1; |
| 221 | } |
| 222 | |
| 223 | char *getargv(int n) /* get ARGV[n] */ |
| 224 | { |
| 225 | Cell *x; |
| 226 | char *s, temp[50]; |
| 227 | extern Array *ARGVtab; |
| 228 | |
| 229 | sprintf(temp, "%d", n); |
| 230 | x = setsymtab(temp, "", 0.0, STR, ARGVtab); |
| 231 | s = getsval(x); |
| 232 | dprintf( ("getargv(%d) returns |%s|\n", n, s) ); |
| 233 | return s; |
| 234 | } |
| 235 | |
| 236 | void setclvar(char *s) /* set var=value from s */ |
| 237 | { |
| 238 | char *p; |
| 239 | Cell *q; |
| 240 | |
| 241 | for (p=s; *p != '='; p++) |
| 242 | ; |
| 243 | *p++ = 0; |
| 244 | p = qstring(p, '\0'); |
| 245 | q = setsymtab(s, p, 0.0, STR, symtab); |
| 246 | setsval(q, p); |
| 247 | if (is_number(q->sval)) { |
| 248 | q->fval = atof(q->sval); |
| 249 | q->tval |= NUM; |
| 250 | } |
| 251 | dprintf( ("command line set %s to |%s|\n", s, p) ); |
| 252 | } |
| 253 | |
| 254 | |
| 255 | void fldbld(void) /* create fields from current record */ |
| 256 | { |
| 257 | /* this relies on having fields[] the same length as $0 */ |
| 258 | /* the fields are all stored in this one array with \0's */ |
| 259 | char *r, *fr, sep; |
| 260 | Cell *p; |
| 261 | int i, j, n; |
| 262 | |
| 263 | if (donefld) |
| 264 | return; |
| 265 | if (!isstr(fldtab[0])) |
| 266 | getsval(fldtab[0]); |
| 267 | r = fldtab[0]->sval; |
| 268 | n = strlen(r); |
| 269 | if (n > fieldssize) { |
| 270 | xfree(fields); |
| 271 | if ((fields = (char *) malloc(n+1)) == NULL) |
| 272 | FATAL("out of space for fields in fldbld %d", n); |
| 273 | fieldssize = n; |
| 274 | } |
| 275 | fr = fields; |
| 276 | i = 0; /* number of fields accumulated here */ |
| 277 | if (strlen(inputFS) > 1) { /* it's a regular expression */ |
| 278 | i = refldbld(r, inputFS); |
| 279 | } else if ((sep = *inputFS) == ' ') { /* default whitespace */ |
| 280 | for (i = 0; ; ) { |
| 281 | while (*r == ' ' || *r == '\t' || *r == '\n') |
| 282 | r++; |
| 283 | if (*r == 0) |
| 284 | break; |
| 285 | i++; |
| 286 | if (i > nfields) |
| 287 | growfldtab(i); |
| 288 | if (freeable(fldtab[i])) |
| 289 | xfree(fldtab[i]->sval); |
| 290 | fldtab[i]->sval = fr; |
| 291 | fldtab[i]->tval = FLD | STR | DONTFREE; |
| 292 | do |
| 293 | *fr++ = *r++; |
| 294 | while (*r != ' ' && *r != '\t' && *r != '\n' && *r != '\0'); |
| 295 | *fr++ = 0; |
| 296 | } |
| 297 | *fr = 0; |
| 298 | } else if ((sep = *inputFS) == 0) { /* new: FS="" => 1 char/field */ |
| 299 | for (i = 0; *r != 0; r++) { |
| 300 | char buf[2]; |
| 301 | i++; |
| 302 | if (i > nfields) |
| 303 | growfldtab(i); |
| 304 | if (freeable(fldtab[i])) |
| 305 | xfree(fldtab[i]->sval); |
| 306 | buf[0] = *r; |
| 307 | buf[1] = 0; |
| 308 | fldtab[i]->sval = tostring(buf); |
| 309 | fldtab[i]->tval = FLD | STR; |
| 310 | } |
| 311 | *fr = 0; |
| 312 | } else if (*r != 0) { /* if 0, it's a null field */ |
| 313 | /* subtlecase : if length(FS) == 1 && length(RS > 0) |
| 314 | * \n is NOT a field separator (cf awk book 61,84). |
| 315 | * this variable is tested in the inner while loop. |
| 316 | */ |
| 317 | int rtest = '\n'; /* normal case */ |
| 318 | if (strlen(*RS) > 0) |
| 319 | rtest = '\0'; |
| 320 | for (;;) { |
| 321 | i++; |
| 322 | if (i > nfields) |
| 323 | growfldtab(i); |
| 324 | if (freeable(fldtab[i])) |
| 325 | xfree(fldtab[i]->sval); |
| 326 | fldtab[i]->sval = fr; |
| 327 | fldtab[i]->tval = FLD | STR | DONTFREE; |
| 328 | while (*r != sep && *r != rtest && *r != '\0') /* \n is always a separator */ |
| 329 | *fr++ = *r++; |
| 330 | *fr++ = 0; |
| 331 | if (*r++ == 0) |
| 332 | break; |
| 333 | } |
| 334 | *fr = 0; |
| 335 | } |
| 336 | if (i > nfields) |
| 337 | FATAL("record `%.30s...' has too many fields; can't happen", r); |
| 338 | cleanfld(i+1, lastfld); /* clean out junk from previous record */ |
| 339 | lastfld = i; |
| 340 | donefld = 1; |
| 341 | for (j = 1; j <= lastfld; j++) { |
| 342 | p = fldtab[j]; |
| 343 | if(is_number(p->sval)) { |
| 344 | p->fval = atof(p->sval); |
| 345 | p->tval |= NUM; |
| 346 | } |
| 347 | } |
| 348 | setfval(nfloc, (Awkfloat) lastfld); |
| 349 | if (dbg) { |
| 350 | for (j = 0; j <= lastfld; j++) { |
| 351 | p = fldtab[j]; |
| 352 | printf("field %d (%s): |%s|\n", j, p->nval, p->sval); |
| 353 | } |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | void cleanfld(int n1, int n2) /* clean out fields n1 .. n2 inclusive */ |
| 358 | { /* nvals remain intact */ |
| 359 | Cell *p; |
| 360 | int i; |
| 361 | |
| 362 | for (i = n1; i <= n2; i++) { |
| 363 | p = fldtab[i]; |
| 364 | if (freeable(p)) |
| 365 | xfree(p->sval); |
| 366 | p->sval = ""; |
| 367 | p->tval = FLD | STR | DONTFREE; |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | void newfld(int n) /* add field n after end of existing lastfld */ |
| 372 | { |
| 373 | if (n > nfields) |
| 374 | growfldtab(n); |
| 375 | cleanfld(lastfld+1, n); |
| 376 | lastfld = n; |
| 377 | setfval(nfloc, (Awkfloat) n); |
| 378 | } |
| 379 | |
| 380 | Cell *fieldadr(int n) /* get nth field */ |
| 381 | { |
| 382 | if (n < 0) |
| 383 | FATAL("trying to access out of range field %d", n); |
| 384 | if (n > nfields) /* fields after NF are empty */ |
| 385 | growfldtab(n); /* but does not increase NF */ |
| 386 | return(fldtab[n]); |
| 387 | } |
| 388 | |
| 389 | void growfldtab(int n) /* make new fields up to at least $n */ |
| 390 | { |
| 391 | int nf = 2 * nfields; |
| 392 | size_t s; |
| 393 | |
| 394 | if (n > nf) |
| 395 | nf = n; |
| 396 | s = (nf+1) * (sizeof (struct Cell *)); /* freebsd: how much do we need? */ |
| 397 | if (s / sizeof(struct Cell *) - 1 == nf) /* didn't overflow */ |
| 398 | fldtab = (Cell **) realloc(fldtab, s); |
| 399 | else /* overflow sizeof int */ |
| 400 | xfree(fldtab); /* make it null */ |
| 401 | if (fldtab == NULL) |
| 402 | FATAL("out of space creating %d fields", nf); |
| 403 | makefields(nfields+1, nf); |
| 404 | nfields = nf; |
| 405 | } |
| 406 | |
| 407 | int refldbld(const char *rec, const char *fs) /* build fields from reg expr in FS */ |
| 408 | { |
| 409 | /* this relies on having fields[] the same length as $0 */ |
| 410 | /* the fields are all stored in this one array with \0's */ |
| 411 | char *fr; |
| 412 | int i, tempstat, n; |
| 413 | fa *pfa; |
| 414 | |
| 415 | n = strlen(rec); |
| 416 | if (n > fieldssize) { |
| 417 | xfree(fields); |
| 418 | if ((fields = (char *) malloc(n+1)) == NULL) |
| 419 | FATAL("out of space for fields in refldbld %d", n); |
| 420 | fieldssize = n; |
| 421 | } |
| 422 | fr = fields; |
| 423 | *fr = '\0'; |
| 424 | if (*rec == '\0') |
| 425 | return 0; |
| 426 | pfa = makedfa(fs, 1); |
| 427 | dprintf( ("into refldbld, rec = <%s>, pat = <%s>\n", rec, fs) ); |
| 428 | tempstat = pfa->initstat; |
| 429 | for (i = 1; ; i++) { |
| 430 | if (i > nfields) |
| 431 | growfldtab(i); |
| 432 | if (freeable(fldtab[i])) |
| 433 | xfree(fldtab[i]->sval); |
| 434 | fldtab[i]->tval = FLD | STR | DONTFREE; |
| 435 | fldtab[i]->sval = fr; |
| 436 | dprintf( ("refldbld: i=%d\n", i) ); |
| 437 | if (nematch(pfa, rec)) { |
| 438 | pfa->initstat = 2; /* horrible coupling to b.c */ |
| 439 | dprintf( ("match %s (%d chars)\n", patbeg, patlen) ); |
| 440 | strncpy(fr, rec, patbeg-rec); |
| 441 | fr += patbeg - rec + 1; |
| 442 | *(fr-1) = '\0'; |
| 443 | rec = patbeg + patlen; |
| 444 | } else { |
| 445 | dprintf( ("no match %s\n", rec) ); |
| 446 | strcpy(fr, rec); |
| 447 | pfa->initstat = tempstat; |
| 448 | break; |
| 449 | } |
| 450 | } |
| 451 | return i; |
| 452 | } |
| 453 | |
| 454 | void recbld(void) /* create $0 from $1..$NF if necessary */ |
| 455 | { |
| 456 | int i; |
| 457 | char *r, *p; |
| 458 | |
| 459 | if (donerec == 1) |
| 460 | return; |
| 461 | r = record; |
| 462 | for (i = 1; i <= *NF; i++) { |
| 463 | p = getsval(fldtab[i]); |
| 464 | if (!adjbuf(&record, &recsize, 1+strlen(p)+r-record, recsize, &r, "recbld 1")) |
| 465 | FATAL("created $0 `%.30s...' too long", record); |
| 466 | while ((*r = *p++) != 0) |
| 467 | r++; |
| 468 | if (i < *NF) { |
| 469 | if (!adjbuf(&record, &recsize, 2+strlen(*OFS)+r-record, recsize, &r, "recbld 2")) |
| 470 | FATAL("created $0 `%.30s...' too long", record); |
| 471 | for (p = *OFS; (*r = *p++) != 0; ) |
| 472 | r++; |
| 473 | } |
| 474 | } |
| 475 | if (!adjbuf(&record, &recsize, 2+r-record, recsize, &r, "recbld 3")) |
| 476 | FATAL("built giant record `%.30s...'", record); |
| 477 | *r = '\0'; |
| 478 | dprintf( ("in recbld inputFS=%s, fldtab[0]=%p\n", inputFS, fldtab[0]) ); |
| 479 | |
| 480 | if (freeable(fldtab[0])) |
| 481 | xfree(fldtab[0]->sval); |
| 482 | fldtab[0]->tval = REC | STR | DONTFREE; |
| 483 | fldtab[0]->sval = record; |
| 484 | |
| 485 | dprintf( ("in recbld inputFS=%s, fldtab[0]=%p\n", inputFS, fldtab[0]) ); |
| 486 | dprintf( ("recbld = |%s|\n", record) ); |
| 487 | donerec = 1; |
| 488 | } |
| 489 | |
| 490 | int errorflag = 0; |
| 491 | |
| 492 | void yyerror(const char *s) |
| 493 | { |
| 494 | SYNTAX("%s", s); |
| 495 | } |
| 496 | |
| 497 | void SYNTAX(const char *fmt, ...) |
| 498 | { |
| 499 | extern char *cmdname, *curfname; |
| 500 | static int been_here = 0; |
| 501 | va_list varg; |
| 502 | |
| 503 | if (been_here++ > 2) |
| 504 | return; |
| 505 | fprintf(stderr, "%s: ", cmdname); |
| 506 | va_start(varg, fmt); |
| 507 | vfprintf(stderr, fmt, varg); |
| 508 | va_end(varg); |
| 509 | fprintf(stderr, " at source line %d", lineno); |
| 510 | if (curfname != NULL) |
| 511 | fprintf(stderr, " in function %s", curfname); |
| 512 | if (compile_time == 1 && cursource() != NULL) |
| 513 | fprintf(stderr, " source file %s", cursource()); |
| 514 | fprintf(stderr, "\n"); |
| 515 | errorflag = 2; |
| 516 | eprint(); |
| 517 | } |
| 518 | |
| 519 | void fpecatch(int n) |
| 520 | { |
| 521 | FATAL("floating point exception %d", n); |
| 522 | } |
| 523 | |
| 524 | extern int bracecnt, brackcnt, parencnt; |
| 525 | |
| 526 | void bracecheck(void) |
| 527 | { |
| 528 | int c; |
| 529 | static int beenhere = 0; |
| 530 | |
| 531 | if (beenhere++) |
| 532 | return; |
| 533 | while ((c = input()) != EOF && c != '\0') |
| 534 | bclass(c); |
| 535 | bcheck2(bracecnt, '{', '}'); |
| 536 | bcheck2(brackcnt, '[', ']'); |
| 537 | bcheck2(parencnt, '(', ')'); |
| 538 | } |
| 539 | |
| 540 | void bcheck2(int n, int c1, int c2) |
| 541 | { |
| 542 | if (n == 1) |
| 543 | fprintf(stderr, "\tmissing %c\n", c2); |
| 544 | else if (n > 1) |
| 545 | fprintf(stderr, "\t%d missing %c's\n", n, c2); |
| 546 | else if (n == -1) |
| 547 | fprintf(stderr, "\textra %c\n", c2); |
| 548 | else if (n < -1) |
| 549 | fprintf(stderr, "\t%d extra %c's\n", -n, c2); |
| 550 | } |
| 551 | |
| 552 | void FATAL(const char *fmt, ...) |
| 553 | { |
| 554 | extern char *cmdname; |
| 555 | va_list varg; |
| 556 | |
| 557 | fflush(stdout); |
| 558 | fprintf(stderr, "%s: ", cmdname); |
| 559 | va_start(varg, fmt); |
| 560 | vfprintf(stderr, fmt, varg); |
| 561 | va_end(varg); |
| 562 | error(); |
| 563 | if (dbg > 1) /* core dump if serious debugging on */ |
| 564 | abort(); |
| 565 | exit(2); |
| 566 | } |
| 567 | |
| 568 | void WARNING(const char *fmt, ...) |
| 569 | { |
| 570 | extern char *cmdname; |
| 571 | va_list varg; |
| 572 | |
| 573 | fflush(stdout); |
| 574 | fprintf(stderr, "%s: ", cmdname); |
| 575 | va_start(varg, fmt); |
| 576 | vfprintf(stderr, fmt, varg); |
| 577 | va_end(varg); |
| 578 | error(); |
| 579 | } |
| 580 | |
| 581 | void error() |
| 582 | { |
| 583 | extern Node *curnode; |
| 584 | |
| 585 | fprintf(stderr, "\n"); |
| 586 | if (compile_time != 2 && NR && *NR > 0) { |
| 587 | fprintf(stderr, " input record number %d", (int) (*FNR)); |
| 588 | if (strcmp(*FILENAME, "-") != 0) |
| 589 | fprintf(stderr, ", file %s", *FILENAME); |
| 590 | fprintf(stderr, "\n"); |
| 591 | } |
| 592 | if (compile_time != 2 && curnode) |
| 593 | fprintf(stderr, " source line number %d", curnode->lineno); |
| 594 | else if (compile_time != 2 && lineno) |
| 595 | fprintf(stderr, " source line number %d", lineno); |
| 596 | if (compile_time == 1 && cursource() != NULL) |
| 597 | fprintf(stderr, " source file %s", cursource()); |
| 598 | fprintf(stderr, "\n"); |
| 599 | eprint(); |
| 600 | } |
| 601 | |
| 602 | void eprint(void) /* try to print context around error */ |
| 603 | { |
| 604 | char *p, *q; |
| 605 | int c; |
| 606 | static int been_here = 0; |
| 607 | extern char ebuf[], *ep; |
| 608 | |
| 609 | if (compile_time == 2 || compile_time == 0 || been_here++ > 0) |
| 610 | return; |
| 611 | p = ep - 1; |
| 612 | if (p > ebuf && *p == '\n') |
| 613 | p--; |
| 614 | for ( ; p > ebuf && *p != '\n' && *p != '\0'; p--) |
| 615 | ; |
| 616 | while (*p == '\n') |
| 617 | p++; |
| 618 | fprintf(stderr, " context is\n\t"); |
| 619 | for (q=ep-1; q>=p && *q!=' ' && *q!='\t' && *q!='\n'; q--) |
| 620 | ; |
| 621 | for ( ; p < q; p++) |
| 622 | if (*p) |
| 623 | putc(*p, stderr); |
| 624 | fprintf(stderr, " >>> "); |
| 625 | for ( ; p < ep; p++) |
| 626 | if (*p) |
| 627 | putc(*p, stderr); |
| 628 | fprintf(stderr, " <<< "); |
| 629 | if (*ep) |
| 630 | while ((c = input()) != '\n' && c != '\0' && c != EOF) { |
| 631 | putc(c, stderr); |
| 632 | bclass(c); |
| 633 | } |
| 634 | putc('\n', stderr); |
| 635 | ep = ebuf; |
| 636 | } |
| 637 | |
| 638 | void bclass(int c) |
| 639 | { |
| 640 | switch (c) { |
| 641 | case '{': bracecnt++; break; |
| 642 | case '}': bracecnt--; break; |
| 643 | case '[': brackcnt++; break; |
| 644 | case ']': brackcnt--; break; |
| 645 | case '(': parencnt++; break; |
| 646 | case ')': parencnt--; break; |
| 647 | } |
| 648 | } |
| 649 | |
| 650 | double errcheck(double x, const char *s) |
| 651 | { |
| 652 | |
| 653 | if (errno == EDOM) { |
| 654 | errno = 0; |
| 655 | WARNING("%s argument out of domain", s); |
| 656 | x = 1; |
| 657 | } else if (errno == ERANGE) { |
| 658 | errno = 0; |
| 659 | WARNING("%s result out of range", s); |
| 660 | x = 1; |
| 661 | } |
| 662 | return x; |
| 663 | } |
| 664 | |
| 665 | int isclvar(const char *s) /* is s of form var=something ? */ |
| 666 | { |
| 667 | const char *os = s; |
| 668 | |
| 669 | if (!isalpha((uschar) *s) && *s != '_') |
| 670 | return 0; |
| 671 | for ( ; *s; s++) |
| 672 | if (!(isalnum((uschar) *s) || *s == '_')) |
| 673 | break; |
| 674 | return *s == '=' && s > os && *(s+1) != '='; |
| 675 | } |
| 676 | |
| 677 | /* strtod is supposed to be a proper test of what's a valid number */ |
| 678 | /* appears to be broken in gcc on linux: thinks 0x123 is a valid FP number */ |
| 679 | /* wrong: violates 4.10.1.4 of ansi C standard */ |
| 680 | |
| 681 | #include <math.h> |
| 682 | int is_number(const char *s) |
| 683 | { |
| 684 | double r; |
| 685 | char *ep; |
| 686 | errno = 0; |
| 687 | r = strtod(s, &ep); |
| 688 | if (ep == s || r == HUGE_VAL || errno == ERANGE) |
| 689 | return 0; |
| 690 | while (*ep == ' ' || *ep == '\t' || *ep == '\n') |
| 691 | ep++; |
| 692 | if (*ep == '\0') |
| 693 | return 1; |
| 694 | else |
| 695 | return 0; |
| 696 | } |