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1.16 ! schwarze 1: /* $Id: main.c,v 1.15 2009/08/22 17:21:23 schwarze Exp $ */
1.1 kristaps 2: /*
1.2 schwarze 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
1.2 schwarze 6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 8: *
1.2 schwarze 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 16: */
17: #include <sys/stat.h>
18:
19: #include <assert.h>
20: #include <err.h>
21: #include <fcntl.h>
22: #include <stdio.h>
23: #include <stdlib.h>
24: #include <string.h>
25: #include <unistd.h>
26:
27: #include "mdoc.h"
28: #include "man.h"
29:
1.16 ! schwarze 30: typedef void (*out_mdoc)(void *, const struct mdoc *);
! 31: typedef void (*out_man)(void *, const struct man *);
1.1 kristaps 32: typedef void (*out_free)(void *);
33:
34: struct buf {
35: char *buf;
36: size_t sz;
37: };
38:
39: enum intt {
40: INTT_AUTO,
41: INTT_MDOC,
42: INTT_MAN
43: };
44:
45: enum outt {
46: OUTT_ASCII = 0,
47: OUTT_TREE,
48: OUTT_LINT
49: };
50:
51: struct curparse {
52: const char *file; /* Current parse. */
53: int fd; /* Current parse. */
54: int wflags;
1.13 schwarze 55: #define WARN_WALL (1 << 0) /* All-warnings mask. */
1.1 kristaps 56: #define WARN_WERR (1 << 2) /* Warnings->errors. */
57: int fflags;
58: #define IGN_SCOPE (1 << 0) /* Ignore scope errors. */
59: #define NO_IGN_ESCAPE (1 << 1) /* Don't ignore bad escapes. */
60: #define NO_IGN_MACRO (1 << 2) /* Don't ignore bad macros. */
61: #define NO_IGN_CHARS (1 << 3) /* Don't ignore bad chars. */
1.14 schwarze 62: #define IGN_ERRORS (1 << 4) /* Ignore failed parse. */
1.6 schwarze 63: enum intt inttype; /* Input parsers... */
1.1 kristaps 64: struct man *man;
65: struct man *lastman;
66: struct mdoc *mdoc;
67: struct mdoc *lastmdoc;
1.6 schwarze 68: enum outt outtype; /* Output devices... */
1.1 kristaps 69: out_mdoc outmdoc;
70: out_man outman;
71: out_free outfree;
72: void *outdata;
73: };
74:
75: extern void *ascii_alloc(void);
1.16 ! schwarze 76: extern void tree_mdoc(void *, const struct mdoc *);
! 77: extern void tree_man(void *, const struct man *);
! 78: extern void terminal_mdoc(void *, const struct mdoc *);
! 79: extern void terminal_man(void *, const struct man *);
1.1 kristaps 80: extern void terminal_free(void *);
81:
82: static int foptions(int *, char *);
83: static int toptions(enum outt *, char *);
84: static int moptions(enum intt *, char *);
85: static int woptions(int *, char *);
86: static int merr(void *, int, int, const char *);
1.12 schwarze 87: static int mwarn(void *, int, int, const char *);
1.1 kristaps 88: static int ffile(struct buf *, struct buf *,
89: const char *, struct curparse *);
90: static int fdesc(struct buf *, struct buf *,
91: struct curparse *);
92: static int pset(const char *, int, struct curparse *,
93: struct man **, struct mdoc **);
94: static struct man *man_init(struct curparse *);
95: static struct mdoc *mdoc_init(struct curparse *);
1.3 schwarze 96: __dead static void version(void);
1.1 kristaps 97: __dead static void usage(void);
98:
99: extern char *__progname;
100:
101:
102: int
103: main(int argc, char *argv[])
104: {
105: int c, rc;
106: struct buf ln, blk;
107: struct curparse curp;
108:
109: bzero(&curp, sizeof(struct curparse));
110:
111: curp.inttype = INTT_AUTO;
112: curp.outtype = OUTT_ASCII;
113:
114: /* LINTED */
1.3 schwarze 115: while (-1 != (c = getopt(argc, argv, "f:m:VW:T:")))
1.1 kristaps 116: switch (c) {
117: case ('f'):
118: if ( ! foptions(&curp.fflags, optarg))
1.9 schwarze 119: return(EXIT_FAILURE);
1.1 kristaps 120: break;
121: case ('m'):
122: if ( ! moptions(&curp.inttype, optarg))
1.9 schwarze 123: return(EXIT_FAILURE);
1.1 kristaps 124: break;
125: case ('T'):
126: if ( ! toptions(&curp.outtype, optarg))
1.9 schwarze 127: return(EXIT_FAILURE);
1.1 kristaps 128: break;
129: case ('W'):
130: if ( ! woptions(&curp.wflags, optarg))
1.9 schwarze 131: return(EXIT_FAILURE);
1.1 kristaps 132: break;
1.3 schwarze 133: case ('V'):
134: version();
135: /* NOTREACHED */
1.1 kristaps 136: default:
137: usage();
138: /* NOTREACHED */
139: }
140:
141: argc -= optind;
142: argv += optind;
143:
144: bzero(&ln, sizeof(struct buf));
145: bzero(&blk, sizeof(struct buf));
146:
147: rc = 1;
148:
1.7 schwarze 149: if (NULL == *argv) {
150: curp.file = "<stdin>";
151: curp.fd = STDIN_FILENO;
1.14 schwarze 152:
153: c = fdesc(&blk, &ln, &curp);
154: if ( ! (IGN_ERRORS & curp.fflags))
155: rc = 1 == c ? 1 : 0;
156: else
157: rc = -1 == c ? 0 : 1;
1.7 schwarze 158: }
1.1 kristaps 159:
160: while (rc && *argv) {
1.14 schwarze 161: c = ffile(&blk, &ln, *argv, &curp);
162: if ( ! (IGN_ERRORS & curp.fflags))
163: rc = 1 == c ? 1 : 0;
164: else
165: rc = -1 == c ? 0 : 1;
166:
1.1 kristaps 167: argv++;
168: if (*argv && rc) {
169: if (curp.lastman)
170: if ( ! man_reset(curp.lastman))
171: rc = 0;
172: if (curp.lastmdoc)
173: if ( ! mdoc_reset(curp.lastmdoc))
174: rc = 0;
175: curp.lastman = NULL;
176: curp.lastmdoc = NULL;
177: }
178: }
179:
180: if (blk.buf)
181: free(blk.buf);
182: if (ln.buf)
183: free(ln.buf);
184: if (curp.outfree)
185: (*curp.outfree)(curp.outdata);
186: if (curp.mdoc)
187: mdoc_free(curp.mdoc);
188: if (curp.man)
189: man_free(curp.man);
190:
191: return(rc ? EXIT_SUCCESS : EXIT_FAILURE);
192: }
193:
194:
195: __dead static void
1.3 schwarze 196: version(void)
197: {
198:
199: (void)printf("%s %s\n", __progname, VERSION);
200: exit(EXIT_SUCCESS);
201: }
202:
203:
204: __dead static void
1.1 kristaps 205: usage(void)
206: {
207:
1.3 schwarze 208: (void)fprintf(stderr, "usage: %s [-V] [-foption...] "
1.1 kristaps 209: "[-mformat] [-Toutput] [-Werr...]\n",
210: __progname);
211: exit(EXIT_FAILURE);
212: }
213:
214:
215: static struct man *
216: man_init(struct curparse *curp)
217: {
218: int pflags;
219: struct man *man;
220: struct man_cb mancb;
221:
222: mancb.man_err = merr;
1.12 schwarze 223: mancb.man_warn = mwarn;
1.1 kristaps 224:
1.6 schwarze 225: /* Defaults from mandoc.1. */
1.2 schwarze 226:
1.11 schwarze 227: pflags = MAN_IGN_MACRO | MAN_IGN_ESCAPE | MAN_IGN_CHARS;
1.2 schwarze 228:
1.1 kristaps 229: if (curp->fflags & NO_IGN_MACRO)
230: pflags &= ~MAN_IGN_MACRO;
1.8 schwarze 231: if (curp->fflags & NO_IGN_CHARS)
232: pflags &= ~MAN_IGN_CHARS;
1.11 schwarze 233: if (curp->fflags & NO_IGN_ESCAPE)
234: pflags &= ~MAN_IGN_ESCAPE;
1.1 kristaps 235:
236: if (NULL == (man = man_alloc(curp, pflags, &mancb)))
237: warnx("memory exhausted");
238:
239: return(man);
240: }
241:
242:
243: static struct mdoc *
244: mdoc_init(struct curparse *curp)
245: {
246: int pflags;
247: struct mdoc *mdoc;
248: struct mdoc_cb mdoccb;
249:
250: mdoccb.mdoc_err = merr;
1.12 schwarze 251: mdoccb.mdoc_warn = mwarn;
1.1 kristaps 252:
1.6 schwarze 253: /* Defaults from mandoc.1. */
1.2 schwarze 254:
1.1 kristaps 255: pflags = MDOC_IGN_MACRO | MDOC_IGN_ESCAPE | MDOC_IGN_CHARS;
256:
257: if (curp->fflags & IGN_SCOPE)
258: pflags |= MDOC_IGN_SCOPE;
259: if (curp->fflags & NO_IGN_ESCAPE)
260: pflags &= ~MDOC_IGN_ESCAPE;
261: if (curp->fflags & NO_IGN_MACRO)
262: pflags &= ~MDOC_IGN_MACRO;
263: if (curp->fflags & NO_IGN_CHARS)
264: pflags &= ~MDOC_IGN_CHARS;
265:
266: if (NULL == (mdoc = mdoc_alloc(curp, pflags, &mdoccb)))
267: warnx("memory exhausted");
268:
269: return(mdoc);
270: }
271:
272:
273: static int
274: ffile(struct buf *blk, struct buf *ln,
275: const char *file, struct curparse *curp)
276: {
277: int c;
278:
279: curp->file = file;
280: if (-1 == (curp->fd = open(curp->file, O_RDONLY, 0))) {
281: warn("%s", curp->file);
1.14 schwarze 282: return(-1);
1.1 kristaps 283: }
284:
285: c = fdesc(blk, ln, curp);
286:
287: if (-1 == close(curp->fd))
288: warn("%s", curp->file);
289:
290: return(c);
291: }
292:
293:
294: static int
295: fdesc(struct buf *blk, struct buf *ln, struct curparse *curp)
296: {
297: size_t sz;
298: ssize_t ssz;
299: struct stat st;
1.5 schwarze 300: int j, i, pos, lnn, comment;
1.1 kristaps 301: struct man *man;
302: struct mdoc *mdoc;
303:
304: sz = BUFSIZ;
305: man = NULL;
306: mdoc = NULL;
307:
308: /*
309: * Two buffers: ln and buf. buf is the input buffer optimised
310: * here for each file's block size. ln is a line buffer. Both
311: * growable, hence passed in by ptr-ptr.
312: */
313:
314: if (-1 == fstat(curp->fd, &st))
1.9 schwarze 315: warn("%s", curp->file);
1.1 kristaps 316: else if ((size_t)st.st_blksize > sz)
317: sz = st.st_blksize;
318:
319: if (sz > blk->sz) {
320: blk->buf = realloc(blk->buf, sz);
321: if (NULL == blk->buf) {
322: warn("realloc");
1.14 schwarze 323: return(-1);
1.1 kristaps 324: }
325: blk->sz = sz;
326: }
327:
328: /* Fill buf with file blocksize. */
329:
1.5 schwarze 330: for (lnn = pos = comment = 0; ; ) {
1.1 kristaps 331: if (-1 == (ssz = read(curp->fd, blk->buf, sz))) {
332: warn("%s", curp->file);
1.14 schwarze 333: return(-1);
1.1 kristaps 334: } else if (0 == ssz)
335: break;
336:
337: /* Parse the read block into partial or full lines. */
338:
339: for (i = 0; i < (int)ssz; i++) {
340: if (pos >= (int)ln->sz) {
341: ln->sz += 256; /* Step-size. */
342: ln->buf = realloc(ln->buf, ln->sz);
343: if (NULL == ln->buf) {
344: warn("realloc");
1.14 schwarze 345: return(-1);
1.1 kristaps 346: }
347: }
348:
349: if ('\n' != blk->buf[i]) {
1.5 schwarze 350: if (comment)
351: continue;
1.1 kristaps 352: ln->buf[pos++] = blk->buf[i];
1.5 schwarze 353:
354: /* Handle in-line `\"' comments. */
355:
356: if (1 == pos || '\"' != ln->buf[pos - 1])
357: continue;
358:
359: for (j = pos - 2; j >= 0; j--)
360: if ('\\' != ln->buf[j])
361: break;
362:
363: if ( ! ((pos - 2 - j) % 2))
364: continue;
365:
366: comment = 1;
367: pos -= 2;
1.1 kristaps 368: continue;
1.5 schwarze 369: }
1.1 kristaps 370:
1.5 schwarze 371: /* Handle escaped `\\n' newlines. */
1.1 kristaps 372:
1.5 schwarze 373: if (pos > 0 && 0 == comment &&
374: '\\' == ln->buf[pos - 1]) {
1.1 kristaps 375: for (j = pos - 1; j >= 0; j--)
376: if ('\\' != ln->buf[j])
377: break;
378: if ( ! ((pos - j) % 2)) {
379: pos--;
380: lnn++;
381: continue;
382: }
383: }
384:
385: ln->buf[pos] = 0;
386: lnn++;
1.5 schwarze 387:
388: /* If unset, assign parser in pset(). */
1.1 kristaps 389:
390: if ( ! (man || mdoc) && ! pset(ln->buf,
391: pos, curp, &man, &mdoc))
1.14 schwarze 392: return(-1);
1.1 kristaps 393:
1.5 schwarze 394: pos = comment = 0;
395:
396: /* Pass down into parsers. */
1.1 kristaps 397:
398: if (man && ! man_parseln(man, lnn, ln->buf))
399: return(0);
400: if (mdoc && ! mdoc_parseln(mdoc, lnn, ln->buf))
401: return(0);
402: }
403: }
404:
1.5 schwarze 405: /* NOTE a parser may not have been assigned, yet. */
1.1 kristaps 406:
407: if ( ! (man || mdoc)) {
1.15 schwarze 408: (void)fprintf(stderr, "%s: not a manual\n",
409: curp->file);
1.1 kristaps 410: return(0);
411: }
412:
413: if (mdoc && ! mdoc_endparse(mdoc))
414: return(0);
415: if (man && ! man_endparse(man))
416: return(0);
417:
1.5 schwarze 418: /* If unset, allocate output dev now (if applicable). */
1.1 kristaps 419:
420: if ( ! (curp->outman && curp->outmdoc)) {
421: switch (curp->outtype) {
422: case (OUTT_TREE):
423: curp->outman = tree_man;
424: curp->outmdoc = tree_mdoc;
425: break;
426: case (OUTT_LINT):
427: break;
428: default:
429: curp->outdata = ascii_alloc();
430: curp->outman = terminal_man;
431: curp->outmdoc = terminal_mdoc;
432: curp->outfree = terminal_free;
433: break;
434: }
435: }
436:
437: /* Execute the out device, if it exists. */
438:
439: if (man && curp->outman)
1.16 ! schwarze 440: (*curp->outman)(curp->outdata, man);
1.1 kristaps 441: if (mdoc && curp->outmdoc)
1.16 ! schwarze 442: (*curp->outmdoc)(curp->outdata, mdoc);
1.1 kristaps 443:
444: return(1);
445: }
446:
447:
448: static int
449: pset(const char *buf, int pos, struct curparse *curp,
450: struct man **man, struct mdoc **mdoc)
451: {
1.5 schwarze 452: int i;
1.1 kristaps 453:
454: /*
455: * Try to intuit which kind of manual parser should be used. If
456: * passed in by command-line (-man, -mdoc), then use that
457: * explicitly. If passed as -mandoc, then try to guess from the
1.5 schwarze 458: * line: either skip dot-lines, use -mdoc when finding `.Dt', or
1.1 kristaps 459: * default to -man, which is more lenient.
460: */
461:
1.5 schwarze 462: if (buf[0] == '.') {
463: for (i = 1; buf[i]; i++)
464: if (' ' != buf[i] && '\t' != buf[i])
465: break;
466: if (0 == buf[i])
467: return(1);
468: }
1.1 kristaps 469:
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);
476: curp->lastmdoc = *mdoc;
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);
483: curp->lastman = *man;
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);
494: curp->lastmdoc = *mdoc;
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);
502: curp->lastman = *man;
503: return(1);
504: }
505:
506:
507: static int
508: moptions(enum intt *tflags, char *arg)
509: {
510:
511: if (0 == strcmp(arg, "doc"))
512: *tflags = INTT_MDOC;
513: else if (0 == strcmp(arg, "andoc"))
514: *tflags = INTT_AUTO;
515: else if (0 == strcmp(arg, "an"))
516: *tflags = INTT_MAN;
517: else {
518: warnx("bad argument: -m%s", arg);
519: return(0);
520: }
521:
522: return(1);
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: static int
546: foptions(int *fflags, char *arg)
547: {
1.10 schwarze 548: char *v, *o;
1.14 schwarze 549: char *toks[7];
1.1 kristaps 550:
551: toks[0] = "ign-scope";
552: toks[1] = "no-ign-escape";
553: toks[2] = "no-ign-macro";
554: toks[3] = "no-ign-chars";
1.14 schwarze 555: toks[4] = "ign-errors";
556: toks[5] = "strict";
557: toks[6] = NULL;
1.1 kristaps 558:
1.10 schwarze 559: while (*arg) {
560: o = arg;
1.1 kristaps 561: switch (getsubopt(&arg, toks, &v)) {
562: case (0):
563: *fflags |= IGN_SCOPE;
564: break;
565: case (1):
566: *fflags |= NO_IGN_ESCAPE;
567: break;
568: case (2):
569: *fflags |= NO_IGN_MACRO;
570: break;
571: case (3):
572: *fflags |= NO_IGN_CHARS;
573: break;
574: case (4):
1.14 schwarze 575: *fflags |= IGN_ERRORS;
576: break;
577: case (5):
1.1 kristaps 578: *fflags |= NO_IGN_ESCAPE |
579: NO_IGN_MACRO | NO_IGN_CHARS;
580: break;
581: default:
1.10 schwarze 582: warnx("bad argument: -f%s", o);
1.1 kristaps 583: return(0);
584: }
1.10 schwarze 585: }
1.1 kristaps 586:
587: return(1);
588: }
589:
590:
591: static int
592: woptions(int *wflags, char *arg)
593: {
1.10 schwarze 594: char *v, *o;
1.13 schwarze 595: char *toks[3];
1.1 kristaps 596:
597: toks[0] = "all";
1.13 schwarze 598: toks[1] = "error";
599: toks[2] = NULL;
1.1 kristaps 600:
1.10 schwarze 601: while (*arg) {
602: o = arg;
1.1 kristaps 603: switch (getsubopt(&arg, toks, &v)) {
604: case (0):
605: *wflags |= WARN_WALL;
606: break;
607: case (1):
608: *wflags |= WARN_WERR;
609: break;
610: default:
1.10 schwarze 611: warnx("bad argument: -W%s", o);
1.1 kristaps 612: return(0);
613: }
1.10 schwarze 614: }
1.1 kristaps 615:
616: return(1);
617: }
618:
619:
620: /* ARGSUSED */
621: static int
622: merr(void *arg, int line, int col, const char *msg)
623: {
624: struct curparse *curp;
625:
626: curp = (struct curparse *)arg;
1.13 schwarze 627:
1.15 schwarze 628: (void)fprintf(stderr, "%s:%d:%d: error: %s\n",
629: curp->file, line, col + 1, msg);
1.2 schwarze 630:
1.1 kristaps 631: return(0);
632: }
633:
634:
635: static int
1.12 schwarze 636: mwarn(void *arg, int line, int col, const char *msg)
1.1 kristaps 637: {
638: struct curparse *curp;
639:
640: curp = (struct curparse *)arg;
641:
1.12 schwarze 642: if ( ! (curp->wflags & WARN_WALL))
1.1 kristaps 643: return(1);
644:
1.15 schwarze 645: (void)fprintf(stderr, "%s:%d:%d: warning: %s\n",
646: curp->file, line, col + 1, msg);
1.1 kristaps 647:
648: if ( ! (curp->wflags & WARN_WERR))
649: return(1);
1.2 schwarze 650:
1.1 kristaps 651: return(0);
652: }
653: