Annotation of src/usr.bin/mandoc/mandoc.c, Revision 1.32
1.32 ! schwarze 1: /* $Id: mandoc.c,v 1.31 2011/11/17 11:58:11 schwarze Exp $ */
1.1 schwarze 2: /*
1.24 schwarze 3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.32 ! schwarze 4: * Copyright (c) 2011, 2012 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 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: *
1.21 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.21 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 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: */
1.2 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
21: #include <ctype.h>
1.26 schwarze 22: #include <errno.h>
23: #include <limits.h>
1.1 schwarze 24: #include <stdlib.h>
1.4 schwarze 25: #include <stdio.h>
26: #include <string.h>
1.5 schwarze 27: #include <time.h>
1.1 schwarze 28:
1.14 schwarze 29: #include "mandoc.h"
1.1 schwarze 30: #include "libmandoc.h"
31:
1.22 schwarze 32: #define DATESIZE 32
33:
1.14 schwarze 34: static int a2time(time_t *, const char *, const char *);
1.22 schwarze 35: static char *time2a(time_t);
1.26 schwarze 36: static int numescape(const char *);
1.5 schwarze 37:
1.26 schwarze 38: /*
39: * Pass over recursive numerical expressions. This context of this
40: * function is important: it's only called within character-terminating
41: * escapes (e.g., \s[xxxyyy]), so all we need to do is handle initial
42: * recursion: we don't care about what's in these blocks.
43: * This returns the number of characters skipped or -1 if an error
44: * occurs (the caller should bail).
45: */
46: static int
47: numescape(const char *start)
1.1 schwarze 48: {
1.26 schwarze 49: int i;
50: size_t sz;
51: const char *cp;
52:
53: i = 0;
54:
55: /* The expression consists of a subexpression. */
56:
57: if ('\\' == start[i]) {
58: cp = &start[++i];
59: /*
60: * Read past the end of the subexpression.
61: * Bail immediately on errors.
62: */
63: if (ESCAPE_ERROR == mandoc_escape(&cp, NULL, NULL))
64: return(-1);
65: return(i + cp - &start[i]);
66: }
67:
68: if ('(' != start[i++])
69: return(0);
1.14 schwarze 70:
1.26 schwarze 71: /*
72: * A parenthesised subexpression. Read until the closing
73: * parenthesis, making sure to handle any nested subexpressions
74: * that might ruin our parse.
75: */
76:
77: while (')' != start[i]) {
78: sz = strcspn(&start[i], ")\\");
79: i += (int)sz;
80:
81: if ('\0' == start[i])
82: return(-1);
83: else if ('\\' != start[i])
84: continue;
85:
86: cp = &start[++i];
87: if (ESCAPE_ERROR == mandoc_escape(&cp, NULL, NULL))
88: return(-1);
89: i += cp - &start[i];
90: }
91:
92: /* Read past the terminating ')'. */
93: return(++i);
94: }
95:
96: enum mandoc_esc
97: mandoc_escape(const char **end, const char **start, int *sz)
98: {
99: char c, term, numeric;
100: int i, lim, ssz, rlim;
101: const char *cp, *rstart;
102: enum mandoc_esc gly;
103:
104: cp = *end;
105: rstart = cp;
106: if (start)
107: *start = rstart;
108: i = lim = 0;
109: gly = ESCAPE_ERROR;
110: term = numeric = '\0';
111:
112: switch ((c = cp[i++])) {
113: /*
114: * First the glyphs. There are several different forms of
115: * these, but each eventually returns a substring of the glyph
116: * name.
117: */
118: case ('('):
119: gly = ESCAPE_SPECIAL;
120: lim = 2;
121: break;
122: case ('['):
123: gly = ESCAPE_SPECIAL;
124: /*
125: * Unicode escapes are defined in groff as \[uXXXX] to
126: * \[u10FFFF], where the contained value must be a valid
127: * Unicode codepoint. Here, however, only check whether
128: * it's not a zero-width escape.
129: */
130: if ('u' == cp[i] && ']' != cp[i + 1])
131: gly = ESCAPE_UNICODE;
132: term = ']';
133: break;
134: case ('C'):
135: if ('\'' != cp[i])
136: return(ESCAPE_ERROR);
137: gly = ESCAPE_SPECIAL;
138: term = '\'';
139: break;
1.32 ! schwarze 140:
! 141: /*
! 142: * The \z escape is supposed to output the following
! 143: * character without advancing the cursor position.
! 144: * Since we are mostly dealing with terminal mode,
! 145: * let us just skip the next character.
! 146: */
! 147: case ('z'):
! 148: (*end)++;
! 149: return(ESCAPE_SKIPCHAR);
1.1 schwarze 150:
1.26 schwarze 151: /*
152: * Handle all triggers matching \X(xy, \Xx, and \X[xxxx], where
153: * 'X' is the trigger. These have opaque sub-strings.
154: */
155: case ('F'):
1.16 schwarze 156: /* FALLTHROUGH */
1.26 schwarze 157: case ('g'):
1.16 schwarze 158: /* FALLTHROUGH */
1.26 schwarze 159: case ('k'):
1.1 schwarze 160: /* FALLTHROUGH */
1.26 schwarze 161: case ('M'):
1.14 schwarze 162: /* FALLTHROUGH */
1.26 schwarze 163: case ('m'):
1.1 schwarze 164: /* FALLTHROUGH */
1.26 schwarze 165: case ('n'):
1.1 schwarze 166: /* FALLTHROUGH */
1.26 schwarze 167: case ('V'):
1.1 schwarze 168: /* FALLTHROUGH */
1.26 schwarze 169: case ('Y'):
1.29 schwarze 170: gly = ESCAPE_IGNORE;
1.1 schwarze 171: /* FALLTHROUGH */
1.26 schwarze 172: case ('f'):
173: if (ESCAPE_ERROR == gly)
174: gly = ESCAPE_FONT;
175:
176: rstart= &cp[i];
177: if (start)
178: *start = rstart;
179:
180: switch (cp[i++]) {
181: case ('('):
182: lim = 2;
183: break;
184: case ('['):
185: term = ']';
186: break;
187: default:
188: lim = 1;
189: i--;
190: break;
191: }
192: break;
193:
194: /*
195: * These escapes are of the form \X'Y', where 'X' is the trigger
196: * and 'Y' is any string. These have opaque sub-strings.
197: */
198: case ('A'):
1.13 schwarze 199: /* FALLTHROUGH */
1.26 schwarze 200: case ('b'):
1.1 schwarze 201: /* FALLTHROUGH */
1.16 schwarze 202: case ('D'):
1.1 schwarze 203: /* FALLTHROUGH */
1.26 schwarze 204: case ('o'):
1.1 schwarze 205: /* FALLTHROUGH */
1.26 schwarze 206: case ('R'):
1.1 schwarze 207: /* FALLTHROUGH */
1.26 schwarze 208: case ('X'):
1.1 schwarze 209: /* FALLTHROUGH */
1.26 schwarze 210: case ('Z'):
211: if ('\'' != cp[i++])
212: return(ESCAPE_ERROR);
213: gly = ESCAPE_IGNORE;
1.16 schwarze 214: term = '\'';
215: break;
1.26 schwarze 216:
217: /*
218: * These escapes are of the form \X'N', where 'X' is the trigger
219: * and 'N' resolves to a numerical expression.
220: */
221: case ('B'):
222: /* FALLTHROUGH */
1.17 schwarze 223: case ('h'):
224: /* FALLTHROUGH */
1.26 schwarze 225: case ('H'):
226: /* FALLTHROUGH */
227: case ('L'):
228: /* FALLTHROUGH */
229: case ('l'):
1.29 schwarze 230: gly = ESCAPE_NUMBERED;
1.26 schwarze 231: /* FALLTHROUGH */
232: case ('S'):
233: /* FALLTHROUGH */
1.17 schwarze 234: case ('v'):
235: /* FALLTHROUGH */
1.26 schwarze 236: case ('w'):
237: /* FALLTHROUGH */
238: case ('x'):
239: if (ESCAPE_ERROR == gly)
240: gly = ESCAPE_IGNORE;
241: if ('\'' != cp[i++])
242: return(ESCAPE_ERROR);
243: term = numeric = '\'';
244: break;
1.29 schwarze 245:
246: /*
247: * Special handling for the numbered character escape.
248: * XXX Do any other escapes need similar handling?
249: */
250: case ('N'):
251: if ('\0' == cp[i])
252: return(ESCAPE_ERROR);
253: *end = &cp[++i];
254: if (isdigit((unsigned char)cp[i-1]))
255: return(ESCAPE_IGNORE);
256: while (isdigit((unsigned char)**end))
257: (*end)++;
258: if (start)
259: *start = &cp[i];
260: if (sz)
261: *sz = *end - &cp[i];
262: if ('\0' != **end)
263: (*end)++;
264: return(ESCAPE_NUMBERED);
1.26 schwarze 265:
266: /*
267: * Sizes get a special category of their own.
268: */
1.6 schwarze 269: case ('s'):
1.26 schwarze 270: gly = ESCAPE_IGNORE;
1.17 schwarze 271:
1.26 schwarze 272: rstart = &cp[i];
273: if (start)
274: *start = rstart;
275:
276: /* See +/- counts as a sign. */
277: c = cp[i];
278: if ('+' == c || '-' == c || ASCII_HYPH == c)
279: ++i;
1.6 schwarze 280:
1.26 schwarze 281: switch (cp[i++]) {
1.16 schwarze 282: case ('('):
1.26 schwarze 283: lim = 2;
1.16 schwarze 284: break;
285: case ('['):
1.26 schwarze 286: term = numeric = ']';
1.16 schwarze 287: break;
288: case ('\''):
1.26 schwarze 289: term = numeric = '\'';
1.16 schwarze 290: break;
291: default:
1.26 schwarze 292: lim = 1;
293: i--;
1.16 schwarze 294: break;
1.6 schwarze 295: }
296:
1.26 schwarze 297: /* See +/- counts as a sign. */
298: c = cp[i];
299: if ('+' == c || '-' == c || ASCII_HYPH == c)
300: ++i;
301:
302: break;
303:
304: /*
305: * Anything else is assumed to be a glyph.
306: */
307: default:
308: gly = ESCAPE_SPECIAL;
309: lim = 1;
310: i--;
311: break;
312: }
313:
314: assert(ESCAPE_ERROR != gly);
315:
316: rstart = &cp[i];
317: if (start)
318: *start = rstart;
319:
320: /*
321: * If a terminating block has been specified, we need to
322: * handle the case of recursion, which could have their
323: * own terminating blocks that mess up our parse. This, by the
324: * way, means that the "start" and "size" values will be
325: * effectively meaningless.
326: */
327:
328: ssz = 0;
329: if (numeric && -1 == (ssz = numescape(&cp[i])))
330: return(ESCAPE_ERROR);
331:
332: i += ssz;
333: rlim = -1;
334:
335: /*
336: * We have a character terminator. Try to read up to that
337: * character. If we can't (i.e., we hit the nil), then return
338: * an error; if we can, calculate our length, read past the
339: * terminating character, and exit.
340: */
341:
342: if ('\0' != term) {
343: *end = strchr(&cp[i], term);
344: if ('\0' == *end)
345: return(ESCAPE_ERROR);
346:
347: rlim = *end - &cp[i];
348: if (sz)
349: *sz = rlim;
350: (*end)++;
351: goto out;
352: }
353:
354: assert(lim > 0);
355:
356: /*
357: * We have a numeric limit. If the string is shorter than that,
358: * stop and return an error. Else adjust our endpoint, length,
359: * and return the current glyph.
360: */
361:
362: if ((size_t)lim > strlen(&cp[i]))
363: return(ESCAPE_ERROR);
364:
365: rlim = lim;
366: if (sz)
367: *sz = rlim;
1.19 schwarze 368:
1.26 schwarze 369: *end = &cp[i] + lim;
370:
371: out:
372: assert(rlim >= 0 && rstart);
1.19 schwarze 373:
1.26 schwarze 374: /* Run post-processors. */
1.19 schwarze 375:
1.26 schwarze 376: switch (gly) {
377: case (ESCAPE_FONT):
1.30 schwarze 378: /*
379: * Pretend that the constant-width font modes are the
380: * same as the regular font modes.
381: */
382: if (2 == rlim && 'C' == *rstart)
383: rstart++;
384: else if (1 != rlim)
1.26 schwarze 385: break;
1.30 schwarze 386:
1.26 schwarze 387: switch (*rstart) {
388: case ('3'):
389: /* FALLTHROUGH */
390: case ('B'):
391: gly = ESCAPE_FONTBOLD;
392: break;
393: case ('2'):
394: /* FALLTHROUGH */
395: case ('I'):
396: gly = ESCAPE_FONTITALIC;
1.16 schwarze 397: break;
1.26 schwarze 398: case ('P'):
399: gly = ESCAPE_FONTPREV;
1.16 schwarze 400: break;
1.26 schwarze 401: case ('1'):
402: /* FALLTHROUGH */
403: case ('R'):
404: gly = ESCAPE_FONTROMAN;
1.1 schwarze 405: break;
406: }
1.16 schwarze 407: break;
1.26 schwarze 408: case (ESCAPE_SPECIAL):
409: if (1 != rlim)
410: break;
411: if ('c' == *rstart)
412: gly = ESCAPE_NOSPACE;
1.16 schwarze 413: break;
1.1 schwarze 414: default:
1.16 schwarze 415: break;
1.1 schwarze 416: }
417:
1.26 schwarze 418: return(gly);
1.1 schwarze 419: }
420:
1.4 schwarze 421: void *
422: mandoc_calloc(size_t num, size_t size)
423: {
424: void *ptr;
425:
426: ptr = calloc(num, size);
427: if (NULL == ptr) {
428: perror(NULL);
1.20 schwarze 429: exit((int)MANDOCLEVEL_SYSERR);
1.4 schwarze 430: }
431:
432: return(ptr);
433: }
434:
435:
436: void *
437: mandoc_malloc(size_t size)
438: {
439: void *ptr;
440:
441: ptr = malloc(size);
442: if (NULL == ptr) {
443: perror(NULL);
1.20 schwarze 444: exit((int)MANDOCLEVEL_SYSERR);
1.4 schwarze 445: }
446:
447: return(ptr);
448: }
449:
450:
451: void *
452: mandoc_realloc(void *ptr, size_t size)
453: {
454:
455: ptr = realloc(ptr, size);
456: if (NULL == ptr) {
457: perror(NULL);
1.20 schwarze 458: exit((int)MANDOCLEVEL_SYSERR);
1.4 schwarze 459: }
460:
461: return(ptr);
462: }
463:
1.27 schwarze 464: char *
465: mandoc_strndup(const char *ptr, size_t sz)
466: {
467: char *p;
468:
469: p = mandoc_malloc(sz + 1);
470: memcpy(p, ptr, sz);
471: p[(int)sz] = '\0';
472: return(p);
473: }
1.4 schwarze 474:
475: char *
476: mandoc_strdup(const char *ptr)
477: {
478: char *p;
479:
480: p = strdup(ptr);
481: if (NULL == p) {
482: perror(NULL);
1.20 schwarze 483: exit((int)MANDOCLEVEL_SYSERR);
1.4 schwarze 484: }
485:
486: return(p);
1.21 schwarze 487: }
488:
489: /*
490: * Parse a quoted or unquoted roff-style request or macro argument.
491: * Return a pointer to the parsed argument, which is either the original
492: * pointer or advanced by one byte in case the argument is quoted.
493: * Null-terminate the argument in place.
494: * Collapse pairs of quotes inside quoted arguments.
495: * Advance the argument pointer to the next argument,
496: * or to the null byte terminating the argument line.
497: */
498: char *
1.25 schwarze 499: mandoc_getarg(struct mparse *parse, char **cpp, int ln, int *pos)
1.21 schwarze 500: {
501: char *start, *cp;
502: int quoted, pairs, white;
503:
504: /* Quoting can only start with a new word. */
505: start = *cpp;
1.26 schwarze 506: quoted = 0;
1.21 schwarze 507: if ('"' == *start) {
508: quoted = 1;
509: start++;
1.26 schwarze 510: }
1.21 schwarze 511:
512: pairs = 0;
513: white = 0;
514: for (cp = start; '\0' != *cp; cp++) {
515: /* Move left after quoted quotes and escaped backslashes. */
516: if (pairs)
517: cp[-pairs] = cp[0];
518: if ('\\' == cp[0]) {
519: if ('\\' == cp[1]) {
520: /* Poor man's copy mode. */
521: pairs++;
522: cp++;
523: } else if (0 == quoted && ' ' == cp[1])
524: /* Skip escaped blanks. */
525: cp++;
526: } else if (0 == quoted) {
527: if (' ' == cp[0]) {
528: /* Unescaped blanks end unquoted args. */
529: white = 1;
530: break;
531: }
532: } else if ('"' == cp[0]) {
533: if ('"' == cp[1]) {
534: /* Quoted quotes collapse. */
535: pairs++;
536: cp++;
537: } else {
538: /* Unquoted quotes end quoted args. */
539: quoted = 2;
540: break;
541: }
542: }
543: }
544:
545: /* Quoted argument without a closing quote. */
1.25 schwarze 546: if (1 == quoted)
547: mandoc_msg(MANDOCERR_BADQUOTE, parse, ln, *pos, NULL);
1.21 schwarze 548:
549: /* Null-terminate this argument and move to the next one. */
550: if (pairs)
551: cp[-pairs] = '\0';
552: if ('\0' != *cp) {
553: *cp++ = '\0';
554: while (' ' == *cp)
555: cp++;
556: }
1.24 schwarze 557: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1.21 schwarze 558: *cpp = cp;
559:
1.25 schwarze 560: if ('\0' == *cp && (white || ' ' == cp[-1]))
561: mandoc_msg(MANDOCERR_EOLNSPACE, parse, ln, *pos, NULL);
1.21 schwarze 562:
563: return(start);
1.4 schwarze 564: }
1.5 schwarze 565:
566: static int
567: a2time(time_t *t, const char *fmt, const char *p)
568: {
569: struct tm tm;
570: char *pp;
571:
572: memset(&tm, 0, sizeof(struct tm));
573:
574: pp = strptime(p, fmt, &tm);
575: if (NULL != pp && '\0' == *pp) {
576: *t = mktime(&tm);
577: return(1);
578: }
579:
580: return(0);
581: }
582:
1.22 schwarze 583: static char *
584: time2a(time_t t)
585: {
1.28 schwarze 586: struct tm *tm;
1.23 schwarze 587: char *buf, *p;
588: size_t ssz;
1.22 schwarze 589: int isz;
590:
1.28 schwarze 591: tm = localtime(&t);
1.22 schwarze 592:
1.23 schwarze 593: /*
594: * Reserve space:
595: * up to 9 characters for the month (September) + blank
596: * up to 2 characters for the day + comma + blank
597: * 4 characters for the year and a terminating '\0'
598: */
599: p = buf = mandoc_malloc(10 + 4 + 4 + 1);
600:
1.28 schwarze 601: if (0 == (ssz = strftime(p, 10 + 1, "%B ", tm)))
1.23 schwarze 602: goto fail;
603: p += (int)ssz;
1.22 schwarze 604:
1.28 schwarze 605: if (-1 == (isz = snprintf(p, 4 + 1, "%d, ", tm->tm_mday)))
1.23 schwarze 606: goto fail;
1.22 schwarze 607: p += isz;
608:
1.28 schwarze 609: if (0 == strftime(p, 4 + 1, "%Y", tm))
1.23 schwarze 610: goto fail;
611: return(buf);
612:
613: fail:
614: free(buf);
615: return(NULL);
1.22 schwarze 616: }
617:
618: char *
1.25 schwarze 619: mandoc_normdate(struct mparse *parse, char *in, int ln, int pos)
1.5 schwarze 620: {
1.22 schwarze 621: char *out;
1.5 schwarze 622: time_t t;
623:
1.22 schwarze 624: if (NULL == in || '\0' == *in ||
625: 0 == strcmp(in, "$" "Mdocdate$")) {
1.25 schwarze 626: mandoc_msg(MANDOCERR_NODATE, parse, ln, pos, NULL);
1.22 schwarze 627: time(&t);
628: }
1.31 schwarze 629: else if (a2time(&t, "%Y-%m-%d", in))
630: t = 0;
1.22 schwarze 631: else if (!a2time(&t, "$" "Mdocdate: %b %d %Y $", in) &&
1.31 schwarze 632: !a2time(&t, "%b %d, %Y", in)) {
1.25 schwarze 633: mandoc_msg(MANDOCERR_BADDATE, parse, ln, pos, NULL);
1.22 schwarze 634: t = 0;
1.5 schwarze 635: }
1.22 schwarze 636: out = t ? time2a(t) : NULL;
1.23 schwarze 637: return(out ? out : mandoc_strdup(in));
1.5 schwarze 638: }
639:
1.9 schwarze 640: int
1.15 schwarze 641: mandoc_eos(const char *p, size_t sz, int enclosed)
1.9 schwarze 642: {
1.15 schwarze 643: const char *q;
1.16 schwarze 644: int found;
1.9 schwarze 645:
1.10 schwarze 646: if (0 == sz)
647: return(0);
1.9 schwarze 648:
1.11 schwarze 649: /*
650: * End-of-sentence recognition must include situations where
651: * some symbols, such as `)', allow prior EOS punctuation to
1.26 schwarze 652: * propagate outward.
1.11 schwarze 653: */
654:
1.16 schwarze 655: found = 0;
656: for (q = p + (int)sz - 1; q >= p; q--) {
1.15 schwarze 657: switch (*q) {
1.11 schwarze 658: case ('\"'):
659: /* FALLTHROUGH */
660: case ('\''):
661: /* FALLTHROUGH */
662: case (']'):
663: /* FALLTHROUGH */
664: case (')'):
1.15 schwarze 665: if (0 == found)
666: enclosed = 1;
1.11 schwarze 667: break;
668: case ('.'):
669: /* FALLTHROUGH */
670: case ('!'):
671: /* FALLTHROUGH */
672: case ('?'):
1.15 schwarze 673: found = 1;
674: break;
1.11 schwarze 675: default:
1.20 schwarze 676: return(found && (!enclosed || isalnum((unsigned char)*q)));
1.11 schwarze 677: }
1.9 schwarze 678: }
679:
1.15 schwarze 680: return(found && !enclosed);
1.24 schwarze 681: }
682:
683: /*
1.25 schwarze 684: * Find out whether a line is a macro line or not. If it is, adjust the
685: * current position and return one; if it isn't, return zero and don't
686: * change the current position.
1.24 schwarze 687: */
1.25 schwarze 688: int
689: mandoc_getcontrol(const char *cp, int *ppos)
1.24 schwarze 690: {
1.25 schwarze 691: int pos;
1.24 schwarze 692:
1.25 schwarze 693: pos = *ppos;
1.24 schwarze 694:
1.25 schwarze 695: if ('\\' == cp[pos] && '.' == cp[pos + 1])
696: pos += 2;
697: else if ('.' == cp[pos] || '\'' == cp[pos])
698: pos++;
699: else
700: return(0);
1.24 schwarze 701:
1.25 schwarze 702: while (' ' == cp[pos] || '\t' == cp[pos])
703: pos++;
1.24 schwarze 704:
1.25 schwarze 705: *ppos = pos;
706: return(1);
1.9 schwarze 707: }
1.26 schwarze 708:
709: /*
710: * Convert a string to a long that may not be <0.
711: * If the string is invalid, or is less than 0, return -1.
712: */
713: int
1.27 schwarze 714: mandoc_strntoi(const char *p, size_t sz, int base)
1.26 schwarze 715: {
716: char buf[32];
717: char *ep;
718: long v;
719:
720: if (sz > 31)
721: return(-1);
722:
723: memcpy(buf, p, sz);
724: buf[(int)sz] = '\0';
725:
726: errno = 0;
727: v = strtol(buf, &ep, base);
728:
729: if (buf[0] == '\0' || *ep != '\0')
730: return(-1);
731:
1.27 schwarze 732: if (v > INT_MAX)
733: v = INT_MAX;
734: if (v < INT_MIN)
735: v = INT_MIN;
1.26 schwarze 736:
737: return((int)v);
738: }
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