Annotation of mandoc/main.c, Revision 1.24
1.24 ! kristaps 1: /* $Id: main.c,v 1.23 2009/04/03 12:27:18 kristaps Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the
7: * above copyright notice and this permission notice appear in all
8: * copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17: * PERFORMANCE OF THIS SOFTWARE.
18: */
19: #include <sys/stat.h>
20:
21: #include <assert.h>
22: #include <err.h>
23: #include <fcntl.h>
24: #include <stdio.h>
25: #include <stdlib.h>
26: #include <string.h>
27: #include <unistd.h>
28:
29: #include "mdoc.h"
1.10 kristaps 30: #include "man.h"
1.1 kristaps 31:
1.16 kristaps 32: /* Account for FreeBSD and Linux in our declarations. */
33:
1.3 kristaps 34: #ifdef __linux__
35: extern int getsubopt(char **, char * const *, char **);
36: # ifndef __dead
37: # define __dead __attribute__((__noreturn__))
38: # endif
1.13 kristaps 39: #elif defined(__dead2)
1.10 kristaps 40: # ifndef __dead
41: # define __dead __dead2
42: # endif
1.3 kristaps 43: #endif
44:
1.22 kristaps 45: typedef int (*out_mdoc)(void *, const struct mdoc *);
46: typedef int (*out_man)(void *, const struct man *);
47: typedef void (*out_free)(void *);
48:
1.5 kristaps 49: struct buf {
50: char *buf;
51: size_t sz;
52: };
53:
1.19 kristaps 54: enum intt {
55: INTT_AUTO,
56: INTT_MDOC,
57: INTT_MAN
58: };
59:
60: enum outt {
61: OUTT_ASCII = 0,
62: OUTT_TREE,
63: OUTT_LINT
64: };
65:
1.5 kristaps 66: struct curparse {
1.22 kristaps 67: const char *file; /* Current parse. */
68: int fd; /* Current parse. */
1.5 kristaps 69: int wflags;
1.1 kristaps 70: #define WARN_WALL 0x03 /* All-warnings mask. */
71: #define WARN_WCOMPAT (1 << 0) /* Compatibility warnings. */
72: #define WARN_WSYNTAX (1 << 1) /* Syntax warnings. */
73: #define WARN_WERR (1 << 2) /* Warnings->errors. */
1.23 kristaps 74: int fflags;
75: #define IGN_SCOPE (1 << 0) /* Ignore scope errors. */
1.24 ! kristaps 76: #define NO_IGN_ESCAPE (1 << 1) /* Don't ignore bad escapes. */
! 77: #define NO_IGN_MACRO (1 << 2) /* Don't ignore bad macros. */
! 78: #define NO_IGN_CHARS (1 << 3) /* Don't ignore bad chars. */
1.22 kristaps 79: enum intt inttype; /* Input parsers. */
1.19 kristaps 80: struct man *man;
1.22 kristaps 81: struct man *lastman;
1.19 kristaps 82: struct mdoc *mdoc;
1.22 kristaps 83: struct mdoc *lastmdoc;
84: enum outt outtype; /* Output devices. */
85: out_mdoc outmdoc;
86: out_man outman;
87: out_free outfree;
88: void *outdata;
1.5 kristaps 89: };
1.1 kristaps 90:
91: extern void *ascii_alloc(void);
1.22 kristaps 92: extern int tree_mdoc(void *, const struct mdoc *);
93: extern int tree_man(void *, const struct man *);
94: extern int terminal_mdoc(void *, const struct mdoc *);
95: extern int terminal_man(void *, const struct man *);
1.1 kristaps 96: extern void terminal_free(void *);
97:
98: static int foptions(int *, char *);
99: static int toptions(enum outt *, char *);
1.10 kristaps 100: static int moptions(enum intt *, char *);
1.1 kristaps 101: static int woptions(int *, char *);
102: static int merr(void *, int, int, const char *);
1.14 kristaps 103: static int manwarn(void *, int, int, const char *);
104: static int mdocwarn(void *, int, int,
1.1 kristaps 105: enum mdoc_warn, const char *);
1.19 kristaps 106: static int fstdin(struct buf *, struct buf *,
107: struct curparse *);
108: static int ffile(struct buf *, struct buf *,
109: const char *, struct curparse *);
1.5 kristaps 110: static int fdesc(struct buf *, struct buf *,
1.19 kristaps 111: struct curparse *);
1.22 kristaps 112: static int pset(const char *, int, struct curparse *,
1.19 kristaps 113: struct man **, struct mdoc **);
114: static struct man *man_init(struct curparse *);
115: static struct mdoc *mdoc_init(struct curparse *);
1.10 kristaps 116: __dead static void version(void);
117: __dead static void usage(void);
1.1 kristaps 118:
1.22 kristaps 119: extern char *__progname;
120:
1.1 kristaps 121:
122: int
123: main(int argc, char *argv[])
124: {
1.19 kristaps 125: int c, rc;
1.5 kristaps 126: struct buf ln, blk;
127: struct curparse curp;
1.1 kristaps 128:
1.5 kristaps 129: bzero(&curp, sizeof(struct curparse));
130:
1.19 kristaps 131: curp.inttype = INTT_AUTO;
1.22 kristaps 132: curp.outtype = OUTT_ASCII;
1.19 kristaps 133:
1.1 kristaps 134: /* LINTED */
1.10 kristaps 135: while (-1 != (c = getopt(argc, argv, "f:m:VW:T:")))
1.1 kristaps 136: switch (c) {
137: case ('f'):
1.19 kristaps 138: if ( ! foptions(&curp.fflags, optarg))
1.1 kristaps 139: return(0);
140: break;
1.10 kristaps 141: case ('m'):
1.19 kristaps 142: if ( ! moptions(&curp.inttype, optarg))
1.10 kristaps 143: return(0);
144: break;
1.1 kristaps 145: case ('T'):
1.22 kristaps 146: if ( ! toptions(&curp.outtype, optarg))
1.1 kristaps 147: return(0);
148: break;
149: case ('W'):
1.5 kristaps 150: if ( ! woptions(&curp.wflags, optarg))
1.1 kristaps 151: return(0);
152: break;
153: case ('V'):
154: version();
155: /* NOTREACHED */
156: default:
157: usage();
158: /* NOTREACHED */
159: }
160:
161: argc -= optind;
162: argv += optind;
163:
1.16 kristaps 164: /* Configure buffers. */
165:
1.5 kristaps 166: bzero(&ln, sizeof(struct buf));
167: bzero(&blk, sizeof(struct buf));
1.1 kristaps 168:
1.22 kristaps 169: rc = 1;
1.1 kristaps 170:
1.22 kristaps 171: if (NULL == *argv)
172: if ( ! fstdin(&blk, &ln, &curp))
173: rc = 0;
174:
175: while (rc && *argv) {
176: if ( ! ffile(&blk, &ln, *argv, &curp))
177: rc = 0;
178: argv++;
179: if (*argv && rc) {
180: if (curp.lastman)
181: if ( ! man_reset(curp.lastman))
182: rc = 0;
183: if (curp.lastmdoc)
184: if ( ! mdoc_reset(curp.lastmdoc))
185: rc = 0;
186: curp.lastman = NULL;
187: curp.lastmdoc = NULL;
1.4 kristaps 188: }
1.1 kristaps 189: }
190:
1.5 kristaps 191: if (blk.buf)
192: free(blk.buf);
193: if (ln.buf)
194: free(ln.buf);
1.22 kristaps 195: if (curp.outfree)
196: (*curp.outfree)(curp.outdata);
1.19 kristaps 197: if (curp.mdoc)
198: mdoc_free(curp.mdoc);
199: if (curp.man)
200: man_free(curp.man);
1.1 kristaps 201:
202: return(rc ? EXIT_SUCCESS : EXIT_FAILURE);
203: }
204:
205:
206: __dead static void
207: version(void)
208: {
209:
210: (void)printf("%s %s\n", __progname, VERSION);
1.18 kristaps 211: exit(EXIT_SUCCESS);
1.1 kristaps 212: }
213:
214:
215: __dead static void
216: usage(void)
217: {
218:
1.12 kristaps 219: (void)fprintf(stderr, "usage: %s [-V] [-foption...] "
220: "[-mformat] [-Toutput] [-Werr...]\n",
221: __progname);
1.18 kristaps 222: exit(EXIT_FAILURE);
1.1 kristaps 223: }
224:
225:
1.19 kristaps 226: static struct man *
227: man_init(struct curparse *curp)
228: {
229: int pflags;
230: struct man *man;
231: struct man_cb mancb;
232:
233: mancb.man_err = merr;
234: mancb.man_warn = manwarn;
235:
1.22 kristaps 236: pflags = MAN_IGN_MACRO; /* XXX */
1.19 kristaps 237:
1.20 kristaps 238: if (curp->fflags & NO_IGN_MACRO)
239: pflags &= ~MAN_IGN_MACRO;
1.19 kristaps 240:
241: if (NULL == (man = man_alloc(curp, pflags, &mancb)))
242: warnx("memory exhausted");
243:
244: return(man);
245: }
246:
247:
248: static struct mdoc *
249: mdoc_init(struct curparse *curp)
250: {
251: int pflags;
252: struct mdoc *mdoc;
253: struct mdoc_cb mdoccb;
254:
255: mdoccb.mdoc_msg = NULL;
256: mdoccb.mdoc_err = merr;
257: mdoccb.mdoc_warn = mdocwarn;
258:
1.24 ! kristaps 259: pflags = MDOC_IGN_MACRO | MDOC_IGN_ESCAPE | MDOC_IGN_CHARS;
1.19 kristaps 260:
261: if (curp->fflags & IGN_SCOPE)
262: pflags |= MDOC_IGN_SCOPE;
1.24 ! kristaps 263: if (curp->fflags & NO_IGN_ESCAPE)
! 264: pflags &= ~MDOC_IGN_ESCAPE;
! 265: if (curp->fflags & NO_IGN_MACRO)
! 266: pflags &= ~MDOC_IGN_MACRO;
! 267: if (curp->fflags & NO_IGN_CHARS)
! 268: pflags &= ~MDOC_IGN_CHARS;
1.19 kristaps 269:
270: if (NULL == (mdoc = mdoc_alloc(curp, pflags, &mdoccb)))
1.24 ! kristaps 271: warnx("memory exhausted");
1.19 kristaps 272:
273: return(mdoc);
274: }
275:
276:
277: static int
278: fstdin(struct buf *blk, struct buf *ln, struct curparse *curp)
279: {
280:
281: curp->file = "<stdin>";
282: curp->fd = STDIN_FILENO;
283: return(fdesc(blk, ln, curp));
284: }
285:
286:
1.1 kristaps 287: static int
1.19 kristaps 288: ffile(struct buf *blk, struct buf *ln,
289: const char *file, struct curparse *curp)
1.1 kristaps 290: {
1.19 kristaps 291: int c;
1.1 kristaps 292:
1.19 kristaps 293: curp->file = file;
294: if (-1 == (curp->fd = open(curp->file, O_RDONLY, 0))) {
295: warn("%s", curp->file);
1.1 kristaps 296: return(0);
297: }
298:
1.19 kristaps 299: c = fdesc(blk, ln, curp);
1.1 kristaps 300:
1.19 kristaps 301: if (-1 == close(curp->fd))
302: warn("%s", curp->file);
1.1 kristaps 303:
304: return(c);
305: }
306:
307:
308: static int
1.19 kristaps 309: fdesc(struct buf *blk, struct buf *ln, struct curparse *curp)
1.1 kristaps 310: {
311: size_t sz;
312: ssize_t ssz;
313: struct stat st;
314: int j, i, pos, lnn;
1.19 kristaps 315: struct man *man;
316: struct mdoc *mdoc;
1.10 kristaps 317:
1.19 kristaps 318: sz = BUFSIZ;
319: man = NULL;
320: mdoc = NULL;
1.1 kristaps 321:
322: /*
1.19 kristaps 323: * Two buffers: ln and buf. buf is the input buffer optimised
324: * here for each file's block size. ln is a line buffer. Both
1.1 kristaps 325: * growable, hence passed in by ptr-ptr.
326: */
327:
1.19 kristaps 328: if (-1 == fstat(curp->fd, &st))
329: warnx("%s", curp->file);
1.6 kristaps 330: else if ((size_t)st.st_blksize > sz)
331: sz = st.st_blksize;
1.1 kristaps 332:
1.5 kristaps 333: if (sz > blk->sz) {
334: blk->buf = realloc(blk->buf, sz);
1.19 kristaps 335: if (NULL == blk->buf) {
336: warn("realloc");
337: return(0);
338: }
1.5 kristaps 339: blk->sz = sz;
1.1 kristaps 340: }
341:
1.19 kristaps 342: /* Fill buf with file blocksize. */
1.1 kristaps 343:
1.19 kristaps 344: for (lnn = 0, pos = 0; ; ) {
345: if (-1 == (ssz = read(curp->fd, blk->buf, sz))) {
346: warn("%s", curp->file);
1.1 kristaps 347: return(0);
348: } else if (0 == ssz)
349: break;
350:
1.19 kristaps 351: /* Parse the read block into partial or full lines. */
352:
1.1 kristaps 353: for (i = 0; i < (int)ssz; i++) {
1.5 kristaps 354: if (pos >= (int)ln->sz) {
355: ln->sz += 256; /* Step-size. */
356: ln->buf = realloc(ln->buf, ln->sz);
1.19 kristaps 357: if (NULL == ln->buf) {
358: warn("realloc");
359: return(0);
360: }
1.1 kristaps 361: }
362:
1.5 kristaps 363: if ('\n' != blk->buf[i]) {
364: ln->buf[pos++] = blk->buf[i];
1.1 kristaps 365: continue;
366: }
367:
368: /* Check for CPP-escaped newline. */
369:
1.5 kristaps 370: if (pos > 0 && '\\' == ln->buf[pos - 1]) {
1.1 kristaps 371: for (j = pos - 1; j >= 0; j--)
1.5 kristaps 372: if ('\\' != ln->buf[j])
1.1 kristaps 373: break;
374:
375: if ( ! ((pos - j) % 2)) {
376: pos--;
377: lnn++;
378: continue;
379: }
380: }
381:
1.5 kristaps 382: ln->buf[pos] = 0;
1.19 kristaps 383: lnn++;
384:
385: /*
386: * If no manual parser has been assigned, then
387: * try to assign one in pset(), which may do
388: * nothing at all. After this, parse the manual
389: * line accordingly.
390: */
391:
392: if ( ! (man || mdoc) && ! pset(ln->buf,
393: pos, curp, &man, &mdoc))
1.10 kristaps 394: return(0);
1.19 kristaps 395:
396: pos = 0;
397:
1.10 kristaps 398: if (man && ! man_parseln(man, lnn, ln->buf))
1.1 kristaps 399: return(0);
1.19 kristaps 400: if (mdoc && ! mdoc_parseln(mdoc, lnn, ln->buf))
401: return(0);
1.1 kristaps 402: }
403: }
404:
1.19 kristaps 405: /* Note that a parser may not have been assigned, yet. */
406:
1.22 kristaps 407: if ( ! (man || mdoc)) {
408: warnx("%s: not a manual", curp->file);
409: return(0);
410: }
411:
412: if (mdoc && ! mdoc_endparse(mdoc))
413: return(0);
414: if (man && ! man_endparse(man))
415: return(0);
1.19 kristaps 416:
1.22 kristaps 417: /*
418: * If an output device hasn't been allocated, see if we should
419: * do so now. Note that not all outtypes have functions, so
420: * this switch statement may be superfluous, but it's
421: * low-overhead enough not to matter very much.
422: */
423:
424: if ( ! (curp->outman && curp->outmdoc)) {
425: switch (curp->outtype) {
426: case (OUTT_TREE):
427: curp->outman = tree_man;
428: curp->outmdoc = tree_mdoc;
429: break;
430: case (OUTT_LINT):
431: break;
432: default:
433: curp->outdata = ascii_alloc();
434: curp->outman = terminal_man;
435: curp->outmdoc = terminal_mdoc;
436: curp->outfree = terminal_free;
437: break;
438: }
439: }
440:
441: /* Execute the out device, if it exists. */
442:
443: if (man && curp->outman)
444: if ( ! (*curp->outman)(curp->outdata, man))
445: return(0);
446: if (mdoc && curp->outmdoc)
447: if ( ! (*curp->outmdoc)(curp->outdata, mdoc))
448: return(0);
449:
450: return(1);
1.19 kristaps 451: }
452:
453:
454: static int
1.22 kristaps 455: pset(const char *buf, int pos, struct curparse *curp,
1.19 kristaps 456: struct man **man, struct mdoc **mdoc)
457: {
458:
459: /*
460: * Try to intuit which kind of manual parser should be used. If
461: * passed in by command-line (-man, -mdoc), then use that
462: * explicitly. If passed as -mandoc, then try to guess from the
463: * line: either skip comments, use -mdoc when finding `.Dt', or
464: * default to -man, which is more lenient.
465: */
466:
467: if (pos >= 3 && 0 == memcmp(buf, ".\\\"", 3))
468: return(1);
1.10 kristaps 469:
1.19 kristaps 470: switch (curp->inttype) {
471: case (INTT_MDOC):
472: if (NULL == curp->mdoc)
473: curp->mdoc = mdoc_init(curp);
474: if (NULL == (*mdoc = curp->mdoc))
475: return(0);
1.22 kristaps 476: curp->lastmdoc = *mdoc;
1.19 kristaps 477: return(1);
478: case (INTT_MAN):
479: if (NULL == curp->man)
480: curp->man = man_init(curp);
481: if (NULL == (*man = curp->man))
482: return(0);
1.22 kristaps 483: curp->lastman = *man;
1.19 kristaps 484: return(1);
485: default:
486: break;
487: }
488:
489: if (pos >= 3 && 0 == memcmp(buf, ".Dd", 3)) {
490: if (NULL == curp->mdoc)
491: curp->mdoc = mdoc_init(curp);
492: if (NULL == (*mdoc = curp->mdoc))
493: return(0);
1.22 kristaps 494: curp->lastmdoc = *mdoc;
1.19 kristaps 495: return(1);
496: }
497:
498: if (NULL == curp->man)
499: curp->man = man_init(curp);
500: if (NULL == (*man = curp->man))
501: return(0);
1.22 kristaps 502: curp->lastman = *man;
1.19 kristaps 503: return(1);
1.10 kristaps 504: }
505:
506:
507: static int
508: moptions(enum intt *tflags, char *arg)
509: {
510:
1.17 kristaps 511: if (0 == strcmp(arg, "doc"))
1.10 kristaps 512: *tflags = INTT_MDOC;
1.19 kristaps 513: else if (0 == strcmp(arg, "andoc"))
514: *tflags = INTT_AUTO;
1.17 kristaps 515: else if (0 == strcmp(arg, "an"))
1.10 kristaps 516: *tflags = INTT_MAN;
517: else {
518: warnx("bad argument: -m%s", arg);
519: return(0);
520: }
521:
522: return(1);
1.1 kristaps 523: }
524:
525:
526: static int
527: toptions(enum outt *tflags, char *arg)
528: {
529:
530: if (0 == strcmp(arg, "ascii"))
531: *tflags = OUTT_ASCII;
532: else if (0 == strcmp(arg, "lint"))
533: *tflags = OUTT_LINT;
534: else if (0 == strcmp(arg, "tree"))
535: *tflags = OUTT_TREE;
536: else {
537: warnx("bad argument: -T%s", arg);
538: return(0);
539: }
540:
541: return(1);
542: }
543:
544:
545: /*
546: * Parse out the options for [-fopt...] setting compiler options. These
547: * can be comma-delimited or called again.
548: */
549: static int
550: foptions(int *fflags, char *arg)
551: {
552: char *v;
1.24 ! kristaps 553: char *toks[6];
1.1 kristaps 554:
555: toks[0] = "ign-scope";
1.24 ! kristaps 556: toks[1] = "no-ign-escape";
! 557: toks[2] = "no-ign-macro";
! 558: toks[3] = "no-ign-chars";
! 559: toks[4] = "strict";
! 560: toks[5] = NULL;
1.1 kristaps 561:
562: while (*arg)
563: switch (getsubopt(&arg, toks, &v)) {
564: case (0):
1.15 kristaps 565: *fflags |= IGN_SCOPE;
1.1 kristaps 566: break;
567: case (1):
1.24 ! kristaps 568: *fflags |= NO_IGN_ESCAPE;
1.1 kristaps 569: break;
570: case (2):
1.24 ! kristaps 571: *fflags |= NO_IGN_MACRO;
1.1 kristaps 572: break;
1.20 kristaps 573: case (3):
1.24 ! kristaps 574: *fflags |= NO_IGN_CHARS;
! 575: break;
! 576: case (4):
! 577: *fflags |= NO_IGN_ESCAPE |
! 578: NO_IGN_MACRO | NO_IGN_CHARS;
1.20 kristaps 579: break;
1.1 kristaps 580: default:
581: warnx("bad argument: -f%s", arg);
582: return(0);
583: }
584:
585: return(1);
586: }
587:
588:
589: /*
590: * Parse out the options for [-Werr...], which sets warning modes.
591: * These can be comma-delimited or called again.
592: */
593: static int
594: woptions(int *wflags, char *arg)
595: {
596: char *v;
597: char *toks[5];
598:
599: toks[0] = "all";
600: toks[1] = "compat";
601: toks[2] = "syntax";
602: toks[3] = "error";
603: toks[4] = NULL;
604:
605: while (*arg)
606: switch (getsubopt(&arg, toks, &v)) {
607: case (0):
608: *wflags |= WARN_WALL;
609: break;
610: case (1):
611: *wflags |= WARN_WCOMPAT;
612: break;
613: case (2):
614: *wflags |= WARN_WSYNTAX;
615: break;
616: case (3):
617: *wflags |= WARN_WERR;
618: break;
619: default:
620: warnx("bad argument: -W%s", arg);
621: return(0);
622: }
623:
624: return(1);
625: }
626:
627:
1.2 kristaps 628: /* ARGSUSED */
1.1 kristaps 629: static int
630: merr(void *arg, int line, int col, const char *msg)
631: {
1.5 kristaps 632: struct curparse *curp;
633:
634: curp = (struct curparse *)arg;
1.1 kristaps 635:
1.5 kristaps 636: warnx("%s:%d: error: %s (column %d)",
637: curp->file, line, msg, col);
1.1 kristaps 638: return(0);
639: }
640:
641:
642: static int
1.14 kristaps 643: mdocwarn(void *arg, int line, int col,
1.1 kristaps 644: enum mdoc_warn type, const char *msg)
645: {
1.5 kristaps 646: struct curparse *curp;
1.1 kristaps 647: char *wtype;
648:
1.5 kristaps 649: curp = (struct curparse *)arg;
1.1 kristaps 650: wtype = NULL;
651:
652: switch (type) {
653: case (WARN_COMPAT):
654: wtype = "compat";
1.5 kristaps 655: if (curp->wflags & WARN_WCOMPAT)
1.1 kristaps 656: break;
657: return(1);
658: case (WARN_SYNTAX):
659: wtype = "syntax";
1.5 kristaps 660: if (curp->wflags & WARN_WSYNTAX)
1.1 kristaps 661: break;
662: return(1);
663: }
664:
665: assert(wtype);
1.5 kristaps 666: warnx("%s:%d: %s warning: %s (column %d)",
667: curp->file, line, wtype, msg, col);
1.1 kristaps 668:
1.5 kristaps 669: if ( ! (curp->wflags & WARN_WERR))
1.1 kristaps 670: return(1);
671:
672: warnx("%s: considering warnings as errors",
673: __progname);
674: return(0);
675: }
676:
677:
1.14 kristaps 678: static int
679: manwarn(void *arg, int line, int col, const char *msg)
680: {
681: struct curparse *curp;
682:
683: curp = (struct curparse *)arg;
684:
685: if ( ! (curp->wflags & WARN_WSYNTAX))
686: return(1);
687:
688: warnx("%s:%d: syntax warning: %s (column %d)",
689: curp->file, line, msg, col);
690:
691: if ( ! (curp->wflags & WARN_WERR))
692: return(1);
693:
694: warnx("%s: considering warnings as errors",
695: __progname);
696: return(0);
697: }
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