![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to mandoc.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [cvsweb.bsd.lv] / mandoc|
Return to mandoc.c CVS log | Up to [cvsweb.bsd.lv] / mandoc |
1.37 ! schwarze 1: /* $Id: mandoc.c,v 1.36 2011/01/03 22:42:37 schwarze Exp $ */
1.1 kristaps 2: /*
1.22 kristaps 3: * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
1.36 schwarze 4: * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.36 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.36 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.9 kristaps 18: #ifdef HAVE_CONFIG_H
19: #include "config.h"
1.7 kristaps 20: #endif
21:
1.2 kristaps 22: #include <sys/types.h>
23:
1.1 kristaps 24: #include <assert.h>
25: #include <ctype.h>
26: #include <stdlib.h>
1.4 kristaps 27: #include <stdio.h>
28: #include <string.h>
1.7 kristaps 29: #include <time.h>
1.1 kristaps 30:
1.18 kristaps 31: #include "mandoc.h"
1.1 kristaps 32: #include "libmandoc.h"
33:
1.37 ! schwarze 34: #define DATESIZE 32
! 35:
1.18 kristaps 36: static int a2time(time_t *, const char *, const char *);
1.37 ! schwarze 37: static char *time2a(time_t);
1.7 kristaps 38:
1.1 kristaps 39: int
1.18 kristaps 40: mandoc_special(char *p)
1.1 kristaps 41: {
1.22 kristaps 42: int len, i;
43: char term;
1.18 kristaps 44: char *sv;
1.1 kristaps 45:
1.22 kristaps 46: len = 0;
47: term = '\0';
1.18 kristaps 48: sv = p;
49:
1.22 kristaps 50: assert('\\' == *p);
51: p++;
1.1 kristaps 52:
1.22 kristaps 53: switch (*p++) {
1.24 kristaps 54: #if 0
55: case ('Z'):
56: /* FALLTHROUGH */
57: case ('X'):
58: /* FALLTHROUGH */
59: case ('x'):
60: /* FALLTHROUGH */
61: case ('S'):
62: /* FALLTHROUGH */
63: case ('R'):
64: /* FALLTHROUGH */
65: case ('N'):
66: /* FALLTHROUGH */
67: case ('l'):
68: /* FALLTHROUGH */
69: case ('L'):
70: /* FALLTHROUGH */
71: case ('H'):
72: /* FALLTHROUGH */
73: case ('h'):
74: /* FALLTHROUGH */
75: case ('D'):
76: /* FALLTHROUGH */
77: case ('C'):
78: /* FALLTHROUGH */
79: case ('b'):
80: /* FALLTHROUGH */
81: case ('B'):
82: /* FALLTHROUGH */
83: case ('a'):
84: /* FALLTHROUGH */
85: case ('A'):
86: if (*p++ != '\'')
87: return(0);
88: term = '\'';
89: break;
90: #endif
1.28 kristaps 91: case ('h'):
92: /* FALLTHROUGH */
93: case ('v'):
94: /* FALLTHROUGH */
1.8 kristaps 95: case ('s'):
1.22 kristaps 96: if (ASCII_HYPH == *p)
97: *p = '-';
1.28 kristaps 98:
99: i = 0;
100: if ('+' == *p || '-' == *p) {
1.22 kristaps 101: p++;
1.28 kristaps 102: i = 1;
103: }
1.8 kristaps 104:
1.22 kristaps 105: switch (*p++) {
106: case ('('):
107: len = 2;
108: break;
109: case ('['):
110: term = ']';
111: break;
112: case ('\''):
113: term = '\'';
114: break;
1.26 kristaps 115: case ('0'):
1.28 kristaps 116: i = 1;
1.26 kristaps 117: /* FALLTHROUGH */
1.22 kristaps 118: default:
119: len = 1;
120: p--;
121: break;
1.8 kristaps 122: }
123:
1.22 kristaps 124: if (ASCII_HYPH == *p)
125: *p = '-';
126: if ('+' == *p || '-' == *p) {
1.28 kristaps 127: if (i)
1.22 kristaps 128: return(0);
129: p++;
130: }
131:
1.33 kristaps 132: /* Handle embedded numerical subexp or escape. */
133:
134: if ('(' == *p) {
135: while (*p && ')' != *p)
136: if ('\\' == *p++) {
137: i = mandoc_special(--p);
138: if (0 == i)
139: return(0);
140: p += i;
141: }
142:
143: if (')' == *p++)
144: break;
145:
146: return(0);
147: } else if ('\\' == *p) {
148: if (0 == (i = mandoc_special(p)))
149: return(0);
150: p += i;
151: }
152:
1.22 kristaps 153: break;
1.24 kristaps 154: #if 0
155: case ('Y'):
156: /* FALLTHROUGH */
157: case ('V'):
158: /* FALLTHROUGH */
159: case ('$'):
160: /* FALLTHROUGH */
161: case ('n'):
162: /* FALLTHROUGH */
1.32 kristaps 163: #endif
1.24 kristaps 164: case ('k'):
165: /* FALLTHROUGH */
166: case ('M'):
167: /* FALLTHROUGH */
168: case ('m'):
169: /* FALLTHROUGH */
1.11 kristaps 170: case ('f'):
171: /* FALLTHROUGH */
172: case ('F'):
173: /* FALLTHROUGH */
1.1 kristaps 174: case ('*'):
1.22 kristaps 175: switch (*p++) {
1.1 kristaps 176: case ('('):
1.22 kristaps 177: len = 2;
178: break;
1.1 kristaps 179: case ('['):
1.22 kristaps 180: term = ']';
181: break;
1.1 kristaps 182: default:
1.22 kristaps 183: len = 1;
184: p--;
1.1 kristaps 185: break;
186: }
1.22 kristaps 187: break;
1.1 kristaps 188: case ('('):
1.22 kristaps 189: len = 2;
190: break;
1.1 kristaps 191: case ('['):
1.22 kristaps 192: term = ']';
1.30 kristaps 193: break;
194: case ('z'):
195: len = 1;
196: if ('\\' == *p) {
1.33 kristaps 197: if (0 == (i = mandoc_special(p)))
198: return(0);
199: p += i;
1.30 kristaps 200: return(*p ? (int)(p - sv) : 0);
201: }
1.1 kristaps 202: break;
1.34 kristaps 203: case ('o'):
204: /* FALLTHROUGH */
1.31 kristaps 205: case ('w'):
206: if ('\'' == *p++) {
207: term = '\'';
208: break;
209: }
210: /* FALLTHROUGH */
1.1 kristaps 211: default:
1.22 kristaps 212: len = 1;
213: p--;
214: break;
1.1 kristaps 215: }
216:
1.22 kristaps 217: if (term) {
218: for ( ; *p && term != *p; p++)
219: if (ASCII_HYPH == *p)
220: *p = '-';
1.24 kristaps 221: return(*p ? (int)(p - sv) : 0);
1.22 kristaps 222: }
1.1 kristaps 223:
1.22 kristaps 224: for (i = 0; *p && i < len; i++, p++)
225: if (ASCII_HYPH == *p)
226: *p = '-';
1.24 kristaps 227: return(i == len ? (int)(p - sv) : 0);
1.1 kristaps 228: }
229:
1.4 kristaps 230:
231: void *
232: mandoc_calloc(size_t num, size_t size)
233: {
234: void *ptr;
235:
236: ptr = calloc(num, size);
237: if (NULL == ptr) {
1.6 kristaps 238: perror(NULL);
1.35 kristaps 239: exit((int)MANDOCLEVEL_SYSERR);
1.4 kristaps 240: }
241:
242: return(ptr);
243: }
244:
245:
246: void *
247: mandoc_malloc(size_t size)
248: {
249: void *ptr;
250:
251: ptr = malloc(size);
252: if (NULL == ptr) {
1.6 kristaps 253: perror(NULL);
1.35 kristaps 254: exit((int)MANDOCLEVEL_SYSERR);
1.4 kristaps 255: }
256:
257: return(ptr);
258: }
259:
260:
261: void *
262: mandoc_realloc(void *ptr, size_t size)
263: {
264:
265: ptr = realloc(ptr, size);
266: if (NULL == ptr) {
1.6 kristaps 267: perror(NULL);
1.35 kristaps 268: exit((int)MANDOCLEVEL_SYSERR);
1.4 kristaps 269: }
270:
271: return(ptr);
272: }
273:
274:
275: char *
276: mandoc_strdup(const char *ptr)
277: {
278: char *p;
279:
280: p = strdup(ptr);
281: if (NULL == p) {
1.6 kristaps 282: perror(NULL);
1.35 kristaps 283: exit((int)MANDOCLEVEL_SYSERR);
1.4 kristaps 284: }
285:
286: return(p);
1.36 schwarze 287: }
288:
289: /*
290: * Parse a quoted or unquoted roff-style request or macro argument.
291: * Return a pointer to the parsed argument, which is either the original
292: * pointer or advanced by one byte in case the argument is quoted.
293: * Null-terminate the argument in place.
294: * Collapse pairs of quotes inside quoted arguments.
295: * Advance the argument pointer to the next argument,
296: * or to the null byte terminating the argument line.
297: */
298: char *
299: mandoc_getarg(char **cpp, mandocmsg msg, void *data, int ln, int *pos)
300: {
301: char *start, *cp;
302: int quoted, pairs, white;
303:
304: /* Quoting can only start with a new word. */
305: start = *cpp;
306: if ('"' == *start) {
307: quoted = 1;
308: start++;
309: } else
310: quoted = 0;
311:
312: pairs = 0;
313: white = 0;
314: for (cp = start; '\0' != *cp; cp++) {
315: /* Move left after quoted quotes and escaped backslashes. */
316: if (pairs)
317: cp[-pairs] = cp[0];
318: if ('\\' == cp[0]) {
319: if ('\\' == cp[1]) {
320: /* Poor man's copy mode. */
321: pairs++;
322: cp++;
323: } else if (0 == quoted && ' ' == cp[1])
324: /* Skip escaped blanks. */
325: cp++;
326: } else if (0 == quoted) {
327: if (' ' == cp[0]) {
328: /* Unescaped blanks end unquoted args. */
329: white = 1;
330: break;
331: }
332: } else if ('"' == cp[0]) {
333: if ('"' == cp[1]) {
334: /* Quoted quotes collapse. */
335: pairs++;
336: cp++;
337: } else {
338: /* Unquoted quotes end quoted args. */
339: quoted = 2;
340: break;
341: }
342: }
343: }
344:
345: /* Quoted argument without a closing quote. */
346: if (1 == quoted && msg)
347: (*msg)(MANDOCERR_BADQUOTE, data, ln, *pos, NULL);
348:
349: /* Null-terminate this argument and move to the next one. */
350: if (pairs)
351: cp[-pairs] = '\0';
352: if ('\0' != *cp) {
353: *cp++ = '\0';
354: while (' ' == *cp)
355: cp++;
356: }
357: *pos += (cp - start) + (quoted ? 1 : 0);
358: *cpp = cp;
359:
360: if ('\0' == *cp && msg && (white || ' ' == cp[-1]))
361: (*msg)(MANDOCERR_EOLNSPACE, data, ln, *pos, NULL);
362:
363: return(start);
1.4 kristaps 364: }
1.7 kristaps 365:
366:
367: static int
368: a2time(time_t *t, const char *fmt, const char *p)
369: {
370: struct tm tm;
371: char *pp;
372:
373: memset(&tm, 0, sizeof(struct tm));
374:
375: pp = strptime(p, fmt, &tm);
376: if (NULL != pp && '\0' == *pp) {
377: *t = mktime(&tm);
378: return(1);
379: }
380:
381: return(0);
382: }
383:
384:
1.37 ! schwarze 385: static char *
! 386: time2a(time_t t)
! 387: {
! 388: struct tm tm;
! 389: char buf[DATESIZE];
! 390: char *p;
! 391: size_t nsz, rsz;
! 392: int isz;
! 393:
! 394: localtime_r(&t, &tm);
! 395:
! 396: p = buf;
! 397: rsz = DATESIZE;
! 398:
! 399: if (0 == (nsz = strftime(p, rsz, "%B ", &tm)))
! 400: return(NULL);
! 401:
! 402: p += (int)nsz;
! 403: rsz -= nsz;
! 404:
! 405: if (-1 == (isz = snprintf(p, rsz, "%d, ", tm.tm_mday)))
! 406: return(NULL);
! 407:
! 408: p += isz;
! 409: rsz -= isz;
! 410:
! 411: return(strftime(p, rsz, "%Y", &tm) ? buf : NULL);
! 412: }
! 413:
! 414:
! 415: char *
! 416: mandoc_normdate(char *in, mandocmsg msg, void *data, int ln, int pos)
1.7 kristaps 417: {
1.37 ! schwarze 418: char *out;
1.7 kristaps 419: time_t t;
420:
1.37 ! schwarze 421: if (NULL == in || '\0' == *in ||
! 422: 0 == strcmp(in, "$" "Mdocdate$")) {
! 423: (*msg)(MANDOCERR_NODATE, data, ln, pos, NULL);
! 424: time(&t);
! 425: }
! 426: else if (!a2time(&t, "$" "Mdocdate: %b %d %Y $", in) &&
! 427: !a2time(&t, "%b %d, %Y", in) &&
! 428: !a2time(&t, "%Y-%m-%d", in)) {
! 429: (*msg)(MANDOCERR_BADDATE, data, ln, pos, NULL);
! 430: t = 0;
1.7 kristaps 431: }
1.37 ! schwarze 432: out = t ? time2a(t) : NULL;
! 433: return(mandoc_strdup(out ? out : in));
1.7 kristaps 434: }
435:
1.12 kristaps 436:
437: int
1.23 schwarze 438: mandoc_eos(const char *p, size_t sz, int enclosed)
1.12 kristaps 439: {
1.23 schwarze 440: const char *q;
441: int found;
1.12 kristaps 442:
1.13 kristaps 443: if (0 == sz)
444: return(0);
1.12 kristaps 445:
1.14 kristaps 446: /*
447: * End-of-sentence recognition must include situations where
448: * some symbols, such as `)', allow prior EOS punctuation to
449: * propogate outward.
450: */
451:
1.23 schwarze 452: found = 0;
1.25 kristaps 453: for (q = p + (int)sz - 1; q >= p; q--) {
1.23 schwarze 454: switch (*q) {
1.14 kristaps 455: case ('\"'):
456: /* FALLTHROUGH */
457: case ('\''):
1.15 kristaps 458: /* FALLTHROUGH */
459: case (']'):
1.14 kristaps 460: /* FALLTHROUGH */
461: case (')'):
1.23 schwarze 462: if (0 == found)
463: enclosed = 1;
1.14 kristaps 464: break;
465: case ('.'):
466: /* FALLTHROUGH */
467: case ('!'):
468: /* FALLTHROUGH */
469: case ('?'):
1.23 schwarze 470: found = 1;
471: break;
1.14 kristaps 472: default:
1.27 joerg 473: return(found && (!enclosed || isalnum((unsigned char)*q)));
1.14 kristaps 474: }
1.12 kristaps 475: }
476:
1.23 schwarze 477: return(found && !enclosed);
1.16 kristaps 478: }
479:
480:
481: int
482: mandoc_hyph(const char *start, const char *c)
483: {
484:
485: /*
486: * Choose whether to break at a hyphenated character. We only
487: * do this if it's free-standing within a word.
488: */
489:
490: /* Skip first/last character of buffer. */
491: if (c == start || '\0' == *(c + 1))
492: return(0);
493: /* Skip first/last character of word. */
494: if ('\t' == *(c + 1) || '\t' == *(c - 1))
495: return(0);
496: if (' ' == *(c + 1) || ' ' == *(c - 1))
497: return(0);
498: /* Skip double invocations. */
499: if ('-' == *(c + 1) || '-' == *(c - 1))
500: return(0);
501: /* Skip escapes. */
502: if ('\\' == *(c - 1))
503: return(0);
504:
505: return(1);
1.12 kristaps 506: }