Annotation of src/usr.bin/awk/lib.c, Revision 1.38
1.38 ! millert 1: /* $OpenBSD: lib.c,v 1.37 2020/06/16 16:14:22 millert Exp $ */
1.1 tholo 2: /****************************************************************
1.4 kstailey 3: Copyright (C) Lucent Technologies 1997
1.1 tholo 4: All Rights Reserved
5:
6: Permission to use, copy, modify, and distribute this software and
7: its documentation for any purpose and without fee is hereby
8: granted, provided that the above copyright notice appear in all
9: copies and that both that the copyright notice and this
10: permission notice and warranty disclaimer appear in supporting
1.4 kstailey 11: documentation, and that the name Lucent Technologies or any of
12: its entities not be used in advertising or publicity pertaining
13: to distribution of the software without specific, written prior
14: permission.
15:
16: LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
17: INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
18: IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
19: SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
20: WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
21: IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
22: ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
23: THIS SOFTWARE.
1.1 tholo 24: ****************************************************************/
25:
26: #define DEBUG
27: #include <stdio.h>
28: #include <string.h>
29: #include <ctype.h>
30: #include <errno.h>
31: #include <stdlib.h>
1.7 millert 32: #include <stdarg.h>
1.33 millert 33: #include <limits.h>
1.1 tholo 34: #include "awk.h"
1.4 kstailey 35: #include "ytab.h"
1.1 tholo 36:
1.33 millert 37: char EMPTY[] = { '\0' };
1.1 tholo 38: FILE *infile = NULL;
1.34 millert 39: bool innew; /* true = infile has not been read by readrec */
1.33 millert 40: char *file = EMPTY;
1.4 kstailey 41: char *record;
1.1 tholo 42: int recsize = RECSIZE;
43: char *fields;
1.4 kstailey 44: int fieldssize = RECSIZE;
45:
46: Cell **fldtab; /* pointers to Cells */
1.33 millert 47: static size_t len_inputFS = 0;
48: static char *inputFS = NULL; /* FS at time of input, for field splitting */
1.1 tholo 49:
1.18 millert 50: #define MAXFLD 2
1.4 kstailey 51: int nfields = MAXFLD; /* last allocated slot for $i */
1.1 tholo 52:
1.32 millert 53: bool donefld; /* true = implies rec broken into fields */
54: bool donerec; /* true = record is valid (no flds have changed) */
1.1 tholo 55:
1.4 kstailey 56: int lastfld = 0; /* last used field */
1.1 tholo 57: int argno = 1; /* current input argument number */
58: extern Awkfloat *ARGC;
59:
1.34 millert 60: static Cell dollar0 = { OCELL, CFLD, NULL, EMPTY, 0.0, REC|STR|DONTFREE, NULL, NULL };
61: static Cell dollar1 = { OCELL, CFLD, NULL, EMPTY, 0.0, FLD|STR|DONTFREE, NULL, NULL };
1.4 kstailey 62:
1.1 tholo 63: void recinit(unsigned int n)
64: {
1.31 millert 65: if ( (record = malloc(n)) == NULL
66: || (fields = malloc(n+1)) == NULL
67: || (fldtab = calloc(nfields+2, sizeof(*fldtab))) == NULL
68: || (fldtab[0] = malloc(sizeof(**fldtab))) == NULL)
1.7 millert 69: FATAL("out of space for $0 and fields");
1.22 millert 70: *record = '\0';
1.4 kstailey 71: *fldtab[0] = dollar0;
72: fldtab[0]->sval = record;
73: fldtab[0]->nval = tostring("0");
74: makefields(1, nfields);
75: }
76:
77: void makefields(int n1, int n2) /* create $n1..$n2 inclusive */
78: {
79: char temp[50];
1.1 tholo 80: int i;
81:
1.4 kstailey 82: for (i = n1; i <= n2; i++) {
1.31 millert 83: fldtab[i] = malloc(sizeof(**fldtab));
1.4 kstailey 84: if (fldtab[i] == NULL)
1.7 millert 85: FATAL("out of space in makefields %d", i);
1.4 kstailey 86: *fldtab[i] = dollar1;
1.31 millert 87: snprintf(temp, sizeof(temp), "%d", i);
1.4 kstailey 88: fldtab[i]->nval = tostring(temp);
89: }
1.1 tholo 90: }
91:
92: void initgetrec(void)
93: {
94: int i;
95: char *p;
96:
97: for (i = 1; i < *ARGC; i++) {
1.20 millert 98: p = getargv(i); /* find 1st real filename */
99: if (p == NULL || *p == '\0') { /* deleted or zapped */
100: argno++;
101: continue;
102: }
103: if (!isclvar(p)) {
104: setsval(lookup("FILENAME", symtab), p);
1.1 tholo 105: return;
106: }
107: setclvar(p); /* a commandline assignment before filename */
108: argno++;
109: }
110: infile = stdin; /* no filenames, so use stdin */
1.34 millert 111: innew = true;
1.1 tholo 112: }
113:
1.29 millert 114: /*
115: * POSIX specifies that fields are supposed to be evaluated as if they were
116: * split using the value of FS at the time that the record's value ($0) was
117: * read.
118: *
119: * Since field-splitting is done lazily, we save the current value of FS
120: * whenever a new record is read in (implicitly or via getline), or when
121: * a new value is assigned to $0.
122: */
123: void savefs(void)
124: {
1.37 millert 125: size_t len = strlen(getsval(fsloc));
126: if (len >= len_inputFS) {
127: len_inputFS = len + 1;
128: inputFS = realloc(inputFS, len_inputFS);
129: if (inputFS == NULL)
130: FATAL("field separator %.10s... is too long", *FS);
1.33 millert 131: }
1.37 millert 132: if (strlcpy(inputFS, *FS, len_inputFS) >= len_inputFS)
1.29 millert 133: FATAL("field separator %.10s... is too long", *FS);
134: }
135:
1.32 millert 136: static bool firsttime = true;
1.15 millert 137:
1.32 millert 138: int getrec(char **pbuf, int *pbufsize, bool isrecord) /* get next input record */
1.4 kstailey 139: { /* note: cares whether buf == record */
1.1 tholo 140: int c;
1.4 kstailey 141: char *buf = *pbuf;
1.18 millert 142: uschar saveb0;
143: int bufsize = *pbufsize, savebufsize = bufsize;
1.1 tholo 144:
145: if (firsttime) {
1.32 millert 146: firsttime = false;
1.1 tholo 147: initgetrec();
148: }
1.24 deraadt 149: DPRINTF( ("RS=<%s>, FS=<%s>, ARGC=%g, FILENAME=%s\n",
1.1 tholo 150: *RS, *FS, *ARGC, *FILENAME) );
1.5 millert 151: if (isrecord) {
1.32 millert 152: donefld = false;
153: donerec = true;
1.29 millert 154: savefs();
1.5 millert 155: }
1.18 millert 156: saveb0 = buf[0];
1.1 tholo 157: buf[0] = 0;
158: while (argno < *ARGC || infile == stdin) {
1.24 deraadt 159: DPRINTF( ("argno=%d, file=|%s|\n", argno, file) );
1.1 tholo 160: if (infile == NULL) { /* have to open a new file */
161: file = getargv(argno);
1.20 millert 162: if (file == NULL || *file == '\0') { /* deleted or zapped */
1.1 tholo 163: argno++;
164: continue;
165: }
166: if (isclvar(file)) { /* a var=value arg */
167: setclvar(file);
168: argno++;
169: continue;
170: }
171: *FILENAME = file;
1.24 deraadt 172: DPRINTF( ("opening file %s\n", file) );
1.1 tholo 173: if (*file == '-' && *(file+1) == '\0')
174: infile = stdin;
1.4 kstailey 175: else if ((infile = fopen(file, "r")) == NULL)
1.7 millert 176: FATAL("can't open file %s", file);
1.1 tholo 177: setfval(fnrloc, 0.0);
178: }
1.34 millert 179: c = readrec(&buf, &bufsize, infile, innew);
180: if (innew)
181: innew = false;
1.1 tholo 182: if (c != 0 || buf[0] != '\0') { /* normal record */
1.4 kstailey 183: if (isrecord) {
184: if (freeable(fldtab[0]))
185: xfree(fldtab[0]->sval);
186: fldtab[0]->sval = buf; /* buf == record */
187: fldtab[0]->tval = REC | STR | DONTFREE;
1.5 millert 188: if (is_number(fldtab[0]->sval)) {
1.4 kstailey 189: fldtab[0]->fval = atof(fldtab[0]->sval);
190: fldtab[0]->tval |= NUM;
1.1 tholo 191: }
192: }
193: setfval(nrloc, nrloc->fval+1);
194: setfval(fnrloc, fnrloc->fval+1);
1.4 kstailey 195: *pbuf = buf;
196: *pbufsize = bufsize;
1.1 tholo 197: return 1;
198: }
199: /* EOF arrived on this file; set up next */
200: if (infile != stdin)
201: fclose(infile);
202: infile = NULL;
203: argno++;
204: }
1.18 millert 205: buf[0] = saveb0;
1.4 kstailey 206: *pbuf = buf;
1.18 millert 207: *pbufsize = savebufsize;
1.1 tholo 208: return 0; /* true end of file */
209: }
210:
211: void nextfile(void)
212: {
1.18 millert 213: if (infile != NULL && infile != stdin)
1.1 tholo 214: fclose(infile);
215: infile = NULL;
216: argno++;
217: }
218:
1.34 millert 219: int readrec(char **pbuf, int *pbufsize, FILE *inf, bool newflag) /* read one record into buf */
1.1 tholo 220: {
1.30 millert 221: int sep, c, isrec;
1.4 kstailey 222: char *rr, *buf = *pbuf;
223: int bufsize = *pbufsize;
1.27 millert 224: char *rs = getsval(rsloc);
1.1 tholo 225:
1.30 millert 226: if (*rs && rs[1]) {
1.32 millert 227: bool found;
1.30 millert 228:
229: fa *pfa = makedfa(rs, 1);
1.34 millert 230: if (newflag)
231: found = fnematch(pfa, inf, &buf, &bufsize, recsize);
232: else {
233: int tempstat = pfa->initstat;
234: pfa->initstat = 2;
235: found = fnematch(pfa, inf, &buf, &bufsize, recsize);
236: pfa->initstat = tempstat;
237: }
1.30 millert 238: if (found)
1.31 millert 239: setptr(patbeg, '\0');
1.30 millert 240: } else {
241: if ((sep = *rs) == 0) {
242: sep = '\n';
243: while ((c=getc(inf)) == '\n' && c != EOF) /* skip leading \n's */
244: ;
245: if (c != EOF)
246: ungetc(c, inf);
247: }
248: for (rr = buf; ; ) {
249: for (; (c=getc(inf)) != sep && c != EOF; ) {
250: if (rr-buf+1 > bufsize)
251: if (!adjbuf(&buf, &bufsize, 1+rr-buf,
252: recsize, &rr, "readrec 1"))
253: FATAL("input record `%.30s...' too long", buf);
254: *rr++ = c;
255: }
256: if (*rs == sep || c == EOF)
257: break;
258: if ((c = getc(inf)) == '\n' || c == EOF) /* 2 in a row */
259: break;
260: if (!adjbuf(&buf, &bufsize, 2+rr-buf, recsize, &rr,
261: "readrec 2"))
262: FATAL("input record `%.30s...' too long", buf);
263: *rr++ = '\n';
1.4 kstailey 264: *rr++ = c;
265: }
1.30 millert 266: if (!adjbuf(&buf, &bufsize, 1+rr-buf, recsize, &rr, "readrec 3"))
1.7 millert 267: FATAL("input record `%.30s...' too long", buf);
1.30 millert 268: *rr = 0;
1.1 tholo 269: }
1.4 kstailey 270: *pbuf = buf;
271: *pbufsize = bufsize;
1.30 millert 272: isrec = *buf || !feof(inf);
273: DPRINTF( ("readrec saw <%s>, returns %d\n", buf, isrec) );
274: return isrec;
1.1 tholo 275: }
276:
277: char *getargv(int n) /* get ARGV[n] */
278: {
279: Cell *x;
1.4 kstailey 280: char *s, temp[50];
1.1 tholo 281: extern Array *ARGVtab;
282:
1.31 millert 283: snprintf(temp, sizeof(temp), "%d", n);
1.20 millert 284: if (lookup(temp, ARGVtab) == NULL)
285: return NULL;
1.1 tholo 286: x = setsymtab(temp, "", 0.0, STR, ARGVtab);
287: s = getsval(x);
1.24 deraadt 288: DPRINTF( ("getargv(%d) returns |%s|\n", n, s) );
1.1 tholo 289: return s;
290: }
291:
292: void setclvar(char *s) /* set var=value from s */
293: {
294: char *p;
295: Cell *q;
296:
297: for (p=s; *p != '='; p++)
298: ;
299: *p++ = 0;
300: p = qstring(p, '\0');
301: q = setsymtab(s, p, 0.0, STR, symtab);
302: setsval(q, p);
1.5 millert 303: if (is_number(q->sval)) {
1.1 tholo 304: q->fval = atof(q->sval);
305: q->tval |= NUM;
306: }
1.24 deraadt 307: DPRINTF( ("command line set %s to |%s|\n", s, p) );
1.1 tholo 308: }
309:
310:
311: void fldbld(void) /* create fields from current record */
312: {
1.4 kstailey 313: /* this relies on having fields[] the same length as $0 */
314: /* the fields are all stored in this one array with \0's */
1.20 millert 315: /* possibly with a final trailing \0 not associated with any field */
1.1 tholo 316: char *r, *fr, sep;
317: Cell *p;
1.4 kstailey 318: int i, j, n;
1.1 tholo 319:
320: if (donefld)
321: return;
1.4 kstailey 322: if (!isstr(fldtab[0]))
323: getsval(fldtab[0]);
324: r = fldtab[0]->sval;
325: n = strlen(r);
326: if (n > fieldssize) {
327: xfree(fields);
1.31 millert 328: if ((fields = malloc(n+2)) == NULL) /* possibly 2 final \0s */
1.7 millert 329: FATAL("out of space for fields in fldbld %d", n);
1.4 kstailey 330: fieldssize = n;
331: }
1.1 tholo 332: fr = fields;
333: i = 0; /* number of fields accumulated here */
1.35 millert 334: if (inputFS == NULL) /* make sure we have a copy of FS */
335: savefs();
1.2 millert 336: if (strlen(inputFS) > 1) { /* it's a regular expression */
337: i = refldbld(r, inputFS);
338: } else if ((sep = *inputFS) == ' ') { /* default whitespace */
1.1 tholo 339: for (i = 0; ; ) {
340: while (*r == ' ' || *r == '\t' || *r == '\n')
341: r++;
342: if (*r == 0)
343: break;
344: i++;
1.4 kstailey 345: if (i > nfields)
346: growfldtab(i);
347: if (freeable(fldtab[i]))
348: xfree(fldtab[i]->sval);
349: fldtab[i]->sval = fr;
350: fldtab[i]->tval = FLD | STR | DONTFREE;
1.1 tholo 351: do
352: *fr++ = *r++;
353: while (*r != ' ' && *r != '\t' && *r != '\n' && *r != '\0');
354: *fr++ = 0;
355: }
356: *fr = 0;
1.2 millert 357: } else if ((sep = *inputFS) == 0) { /* new: FS="" => 1 char/field */
1.32 millert 358: for (i = 0; *r != '\0'; r += n) {
1.33 millert 359: char buf[MB_LEN_MAX + 1];
1.32 millert 360:
1.1 tholo 361: i++;
1.4 kstailey 362: if (i > nfields)
363: growfldtab(i);
364: if (freeable(fldtab[i]))
365: xfree(fldtab[i]->sval);
1.33 millert 366: n = mblen(r, MB_LEN_MAX);
1.32 millert 367: if (n < 0)
368: n = 1;
369: memcpy(buf, r, n);
370: buf[n] = '\0';
1.4 kstailey 371: fldtab[i]->sval = tostring(buf);
372: fldtab[i]->tval = FLD | STR;
1.1 tholo 373: }
374: *fr = 0;
375: } else if (*r != 0) { /* if 0, it's a null field */
1.15 millert 376: /* subtlecase : if length(FS) == 1 && length(RS > 0)
377: * \n is NOT a field separator (cf awk book 61,84).
378: * this variable is tested in the inner while loop.
379: */
380: int rtest = '\n'; /* normal case */
381: if (strlen(*RS) > 0)
382: rtest = '\0';
1.1 tholo 383: for (;;) {
384: i++;
1.4 kstailey 385: if (i > nfields)
386: growfldtab(i);
387: if (freeable(fldtab[i]))
388: xfree(fldtab[i]->sval);
389: fldtab[i]->sval = fr;
390: fldtab[i]->tval = FLD | STR | DONTFREE;
1.15 millert 391: while (*r != sep && *r != rtest && *r != '\0') /* \n is always a separator */
1.1 tholo 392: *fr++ = *r++;
393: *fr++ = 0;
394: if (*r++ == 0)
395: break;
396: }
397: *fr = 0;
398: }
1.4 kstailey 399: if (i > nfields)
1.7 millert 400: FATAL("record `%.30s...' has too many fields; can't happen", r);
1.4 kstailey 401: cleanfld(i+1, lastfld); /* clean out junk from previous record */
402: lastfld = i;
1.32 millert 403: donefld = true;
1.4 kstailey 404: for (j = 1; j <= lastfld; j++) {
405: p = fldtab[j];
1.5 millert 406: if(is_number(p->sval)) {
1.1 tholo 407: p->fval = atof(p->sval);
408: p->tval |= NUM;
409: }
410: }
1.4 kstailey 411: setfval(nfloc, (Awkfloat) lastfld);
1.32 millert 412: donerec = true; /* restore */
1.4 kstailey 413: if (dbg) {
414: for (j = 0; j <= lastfld; j++) {
415: p = fldtab[j];
416: printf("field %d (%s): |%s|\n", j, p->nval, p->sval);
417: }
418: }
1.1 tholo 419: }
420:
1.4 kstailey 421: void cleanfld(int n1, int n2) /* clean out fields n1 .. n2 inclusive */
422: { /* nvals remain intact */
423: Cell *p;
424: int i;
1.1 tholo 425:
1.4 kstailey 426: for (i = n1; i <= n2; i++) {
427: p = fldtab[i];
428: if (freeable(p))
1.1 tholo 429: xfree(p->sval);
1.33 millert 430: p->sval = EMPTY,
1.1 tholo 431: p->tval = FLD | STR | DONTFREE;
432: }
433: }
434:
1.4 kstailey 435: void newfld(int n) /* add field n after end of existing lastfld */
1.1 tholo 436: {
1.4 kstailey 437: if (n > nfields)
438: growfldtab(n);
439: cleanfld(lastfld+1, n);
440: lastfld = n;
1.1 tholo 441: setfval(nfloc, (Awkfloat) n);
1.26 millert 442: }
443:
444: void setlastfld(int n) /* set lastfld cleaning fldtab cells if necessary */
445: {
1.27 millert 446: if (n < 0)
447: FATAL("cannot set NF to a negative value");
1.26 millert 448: if (n > nfields)
449: growfldtab(n);
450:
451: if (lastfld < n)
452: cleanfld(lastfld+1, n);
453: else
454: cleanfld(n+1, lastfld);
455:
456: lastfld = n;
1.1 tholo 457: }
458:
1.4 kstailey 459: Cell *fieldadr(int n) /* get nth field */
460: {
461: if (n < 0)
1.15 millert 462: FATAL("trying to access out of range field %d", n);
1.4 kstailey 463: if (n > nfields) /* fields after NF are empty */
464: growfldtab(n); /* but does not increase NF */
465: return(fldtab[n]);
466: }
467:
468: void growfldtab(int n) /* make new fields up to at least $n */
469: {
470: int nf = 2 * nfields;
1.15 millert 471: size_t s;
1.4 kstailey 472:
473: if (n > nf)
474: nf = n;
1.15 millert 475: s = (nf+1) * (sizeof (struct Cell *)); /* freebsd: how much do we need? */
1.34 millert 476: if (s / sizeof(struct Cell *) - 1 == (size_t)nf) /* didn't overflow */
1.31 millert 477: fldtab = realloc(fldtab, s);
1.15 millert 478: else /* overflow sizeof int */
479: xfree(fldtab); /* make it null */
1.4 kstailey 480: if (fldtab == NULL)
1.7 millert 481: FATAL("out of space creating %d fields", nf);
1.4 kstailey 482: makefields(nfields+1, nf);
483: nfields = nf;
484: }
485:
1.11 millert 486: int refldbld(const char *rec, const char *fs) /* build fields from reg expr in FS */
1.1 tholo 487: {
1.4 kstailey 488: /* this relies on having fields[] the same length as $0 */
489: /* the fields are all stored in this one array with \0's */
1.1 tholo 490: char *fr;
1.4 kstailey 491: int i, tempstat, n;
1.1 tholo 492: fa *pfa;
493:
1.4 kstailey 494: n = strlen(rec);
495: if (n > fieldssize) {
496: xfree(fields);
1.31 millert 497: if ((fields = malloc(n+1)) == NULL)
1.7 millert 498: FATAL("out of space for fields in refldbld %d", n);
1.4 kstailey 499: fieldssize = n;
500: }
1.1 tholo 501: fr = fields;
502: *fr = '\0';
503: if (*rec == '\0')
504: return 0;
505: pfa = makedfa(fs, 1);
1.24 deraadt 506: DPRINTF( ("into refldbld, rec = <%s>, pat = <%s>\n", rec, fs) );
1.1 tholo 507: tempstat = pfa->initstat;
1.4 kstailey 508: for (i = 1; ; i++) {
1.37 millert 509: const size_t fss_rem = fields + fieldssize + 1 - fr;
1.4 kstailey 510: if (i > nfields)
511: growfldtab(i);
512: if (freeable(fldtab[i]))
513: xfree(fldtab[i]->sval);
514: fldtab[i]->tval = FLD | STR | DONTFREE;
515: fldtab[i]->sval = fr;
1.24 deraadt 516: DPRINTF( ("refldbld: i=%d\n", i) );
1.1 tholo 517: if (nematch(pfa, rec)) {
1.37 millert 518: const size_t reclen = patbeg - rec;
1.4 kstailey 519: pfa->initstat = 2; /* horrible coupling to b.c */
1.24 deraadt 520: DPRINTF( ("match %s (%d chars)\n", patbeg, patlen) );
1.37 millert 521: if (reclen >= fss_rem)
522: FATAL("out of space for fields in refldbld");
523: memcpy(fr, rec, reclen);
524: fr += reclen;
525: *fr++ = '\0';
1.1 tholo 526: rec = patbeg + patlen;
527: } else {
1.24 deraadt 528: DPRINTF( ("no match %s\n", rec) );
1.37 millert 529: if (strlcpy(fr, rec, fss_rem) >= fss_rem)
530: FATAL("out of space for fields in refldbld");
1.1 tholo 531: pfa->initstat = tempstat;
532: break;
533: }
534: }
1.29 millert 535: return i;
1.1 tholo 536: }
537:
538: void recbld(void) /* create $0 from $1..$NF if necessary */
539: {
540: int i;
541: char *r, *p;
1.27 millert 542: char *sep = getsval(ofsloc);
1.1 tholo 543:
1.32 millert 544: if (donerec)
1.1 tholo 545: return;
1.5 millert 546: r = record;
1.1 tholo 547: for (i = 1; i <= *NF; i++) {
1.4 kstailey 548: p = getsval(fldtab[i]);
1.5 millert 549: if (!adjbuf(&record, &recsize, 1+strlen(p)+r-record, recsize, &r, "recbld 1"))
1.7 millert 550: FATAL("created $0 `%.30s...' too long", record);
1.4 kstailey 551: while ((*r = *p++) != 0)
1.1 tholo 552: r++;
1.4 kstailey 553: if (i < *NF) {
1.27 millert 554: if (!adjbuf(&record, &recsize, 2+strlen(sep)+r-record, recsize, &r, "recbld 2"))
1.7 millert 555: FATAL("created $0 `%.30s...' too long", record);
1.27 millert 556: for (p = sep; (*r = *p++) != 0; )
1.1 tholo 557: r++;
1.4 kstailey 558: }
1.1 tholo 559: }
1.5 millert 560: if (!adjbuf(&record, &recsize, 2+r-record, recsize, &r, "recbld 3"))
1.7 millert 561: FATAL("built giant record `%.30s...'", record);
1.1 tholo 562: *r = '\0';
1.24 deraadt 563: DPRINTF( ("in recbld inputFS=%s, fldtab[0]=%p\n", inputFS, (void*)fldtab[0]) );
1.4 kstailey 564:
565: if (freeable(fldtab[0]))
566: xfree(fldtab[0]->sval);
567: fldtab[0]->tval = REC | STR | DONTFREE;
568: fldtab[0]->sval = record;
569:
1.24 deraadt 570: DPRINTF( ("in recbld inputFS=%s, fldtab[0]=%p\n", inputFS, (void*)fldtab[0]) );
571: DPRINTF( ("recbld = |%s|\n", record) );
1.32 millert 572: donerec = true;
1.1 tholo 573: }
574:
575: int errorflag = 0;
576:
1.11 millert 577: void yyerror(const char *s)
1.1 tholo 578: {
1.14 grange 579: SYNTAX("%s", s);
1.7 millert 580: }
581:
1.11 millert 582: void SYNTAX(const char *fmt, ...)
1.7 millert 583: {
1.1 tholo 584: extern char *cmdname, *curfname;
585: static int been_here = 0;
1.7 millert 586: va_list varg;
1.1 tholo 587:
588: if (been_here++ > 2)
589: return;
1.7 millert 590: fprintf(stderr, "%s: ", cmdname);
591: va_start(varg, fmt);
592: vfprintf(stderr, fmt, varg);
593: va_end(varg);
1.1 tholo 594: fprintf(stderr, " at source line %d", lineno);
595: if (curfname != NULL)
596: fprintf(stderr, " in function %s", curfname);
1.32 millert 597: if (compile_time == COMPILING && cursource() != NULL)
1.6 millert 598: fprintf(stderr, " source file %s", cursource());
1.1 tholo 599: fprintf(stderr, "\n");
600: errorflag = 2;
601: eprint();
602: }
603:
604: extern int bracecnt, brackcnt, parencnt;
605:
606: void bracecheck(void)
607: {
608: int c;
609: static int beenhere = 0;
610:
611: if (beenhere++)
612: return;
1.3 millert 613: while ((c = input()) != EOF && c != '\0')
1.1 tholo 614: bclass(c);
615: bcheck2(bracecnt, '{', '}');
616: bcheck2(brackcnt, '[', ']');
617: bcheck2(parencnt, '(', ')');
618: }
619:
620: void bcheck2(int n, int c1, int c2)
621: {
622: if (n == 1)
623: fprintf(stderr, "\tmissing %c\n", c2);
624: else if (n > 1)
625: fprintf(stderr, "\t%d missing %c's\n", n, c2);
626: else if (n == -1)
627: fprintf(stderr, "\textra %c\n", c2);
628: else if (n < -1)
629: fprintf(stderr, "\t%d extra %c's\n", -n, c2);
630: }
631:
1.35 millert 632: void FATAL(const char *fmt, ...)
1.7 millert 633: {
634: extern char *cmdname;
635: va_list varg;
636:
637: fflush(stdout);
638: fprintf(stderr, "%s: ", cmdname);
639: va_start(varg, fmt);
640: vfprintf(stderr, fmt, varg);
641: va_end(varg);
642: error();
643: if (dbg > 1) /* core dump if serious debugging on */
644: abort();
645: exit(2);
646: }
647:
1.11 millert 648: void WARNING(const char *fmt, ...)
1.1 tholo 649: {
650: extern char *cmdname;
1.7 millert 651: va_list varg;
1.1 tholo 652:
653: fflush(stdout);
654: fprintf(stderr, "%s: ", cmdname);
1.7 millert 655: va_start(varg, fmt);
656: vfprintf(stderr, fmt, varg);
657: va_end(varg);
658: error();
659: }
660:
661: void error()
662: {
663: extern Node *curnode;
664:
1.1 tholo 665: fprintf(stderr, "\n");
1.32 millert 666: if (compile_time != ERROR_PRINTING) {
667: if (NR && *NR > 0) {
668: fprintf(stderr, " input record number %d", (int) (*FNR));
669: if (strcmp(*FILENAME, "-") != 0)
670: fprintf(stderr, ", file %s", *FILENAME);
671: fprintf(stderr, "\n");
672: }
673: if (curnode)
674: fprintf(stderr, " source line number %d", curnode->lineno);
675: else if (lineno)
676: fprintf(stderr, " source line number %d", lineno);
677: }
678:
679: if (compile_time == COMPILING && cursource() != NULL)
1.6 millert 680: fprintf(stderr, " source file %s", cursource());
681: fprintf(stderr, "\n");
1.1 tholo 682: eprint();
683: }
684:
685: void eprint(void) /* try to print context around error */
686: {
687: char *p, *q;
688: int c;
689: static int been_here = 0;
690: extern char ebuf[], *ep;
691:
1.32 millert 692: if (compile_time != COMPILING || been_here++ > 0 || ebuf == ep)
1.1 tholo 693: return;
694: p = ep - 1;
695: if (p > ebuf && *p == '\n')
696: p--;
697: for ( ; p > ebuf && *p != '\n' && *p != '\0'; p--)
698: ;
699: while (*p == '\n')
700: p++;
701: fprintf(stderr, " context is\n\t");
702: for (q=ep-1; q>=p && *q!=' ' && *q!='\t' && *q!='\n'; q--)
703: ;
704: for ( ; p < q; p++)
705: if (*p)
706: putc(*p, stderr);
707: fprintf(stderr, " >>> ");
708: for ( ; p < ep; p++)
709: if (*p)
710: putc(*p, stderr);
711: fprintf(stderr, " <<< ");
712: if (*ep)
713: while ((c = input()) != '\n' && c != '\0' && c != EOF) {
714: putc(c, stderr);
715: bclass(c);
716: }
717: putc('\n', stderr);
718: ep = ebuf;
719: }
720:
721: void bclass(int c)
722: {
723: switch (c) {
724: case '{': bracecnt++; break;
725: case '}': bracecnt--; break;
726: case '[': brackcnt++; break;
727: case ']': brackcnt--; break;
728: case '(': parencnt++; break;
729: case ')': parencnt--; break;
730: }
731: }
732:
1.11 millert 733: double errcheck(double x, const char *s)
1.1 tholo 734: {
735:
736: if (errno == EDOM) {
737: errno = 0;
1.7 millert 738: WARNING("%s argument out of domain", s);
1.1 tholo 739: x = 1;
740: } else if (errno == ERANGE) {
741: errno = 0;
1.7 millert 742: WARNING("%s result out of range", s);
1.1 tholo 743: x = 1;
744: }
745: return x;
746: }
747:
1.11 millert 748: int isclvar(const char *s) /* is s of form var=something ? */
1.1 tholo 749: {
1.11 millert 750: const char *os = s;
1.1 tholo 751:
1.8 millert 752: if (!isalpha((uschar) *s) && *s != '_')
1.1 tholo 753: return 0;
754: for ( ; *s; s++)
1.8 millert 755: if (!(isalnum((uschar) *s) || *s == '_'))
1.1 tholo 756: break;
1.28 millert 757: return *s == '=' && s > os;
1.1 tholo 758: }
759:
1.4 kstailey 760: /* strtod is supposed to be a proper test of what's a valid number */
1.8 millert 761: /* appears to be broken in gcc on linux: thinks 0x123 is a valid FP number */
762: /* wrong: violates 4.10.1.4 of ansi C standard */
1.38 ! millert 763: /* well, not quite. As of C99, hex floating point is allowed. so this is
! 764: * a bit of a mess.
! 765: */
1.1 tholo 766:
1.4 kstailey 767: #include <math.h>
1.11 millert 768: int is_number(const char *s)
1.1 tholo 769: {
1.4 kstailey 770: double r;
771: char *ep;
772: errno = 0;
773: r = strtod(s, &ep);
774: if (ep == s || r == HUGE_VAL || errno == ERANGE)
775: return 0;
1.38 ! millert 776: /* allow \r as well. windows files aren't going to go away. */
! 777: while (*ep == ' ' || *ep == '\t' || *ep == '\n' || *ep == '\r')
1.4 kstailey 778: ep++;
779: if (*ep == '\0')
780: return 1;
1.1 tholo 781: else
1.4 kstailey 782: return 0;
1.1 tholo 783: }
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