Annotation of mandoc/mandoc.c, Revision 1.94
1.94 ! schwarze 1: /* $Id: mandoc.c,v 1.93 2015/08/29 22:40:05 schwarze Exp $ */
1.1 kristaps 2: /*
1.90 schwarze 3: * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
4: * Copyright (c) 2011-2015 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: #include "config.h"
1.7 kristaps 19:
1.2 kristaps 20: #include <sys/types.h>
21:
1.1 kristaps 22: #include <assert.h>
23: #include <ctype.h>
1.50 kristaps 24: #include <errno.h>
25: #include <limits.h>
1.1 kristaps 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"
1.76 schwarze 32: #include "mandoc_aux.h"
1.1 kristaps 33: #include "libmandoc.h"
34:
1.37 schwarze 35: #define DATESIZE 32
36:
1.18 kristaps 37: static int a2time(time_t *, const char *, const char *);
1.37 schwarze 38: static char *time2a(time_t);
1.7 kristaps 39:
1.45 kristaps 40:
41: enum mandoc_esc
1.74 schwarze 42: mandoc_escape(const char **end, const char **start, int *sz)
1.1 kristaps 43: {
1.65 schwarze 44: const char *local_start;
45: int local_sz;
46: char term;
1.79 schwarze 47: enum mandoc_esc gly;
1.45 kristaps 48:
1.65 schwarze 49: /*
50: * When the caller doesn't provide return storage,
51: * use local storage.
52: */
53:
54: if (NULL == start)
55: start = &local_start;
56: if (NULL == sz)
57: sz = &local_sz;
58:
59: /*
60: * Beyond the backslash, at least one input character
61: * is part of the escape sequence. With one exception
62: * (see below), that character won't be returned.
63: */
64:
1.45 kristaps 65: gly = ESCAPE_ERROR;
1.65 schwarze 66: *start = ++*end;
67: *sz = 0;
1.64 schwarze 68: term = '\0';
1.18 kristaps 69:
1.65 schwarze 70: switch ((*start)[-1]) {
1.45 kristaps 71: /*
72: * First the glyphs. There are several different forms of
73: * these, but each eventually returns a substring of the glyph
74: * name.
75: */
1.79 schwarze 76: case '(':
1.45 kristaps 77: gly = ESCAPE_SPECIAL;
1.65 schwarze 78: *sz = 2;
1.45 kristaps 79: break;
1.79 schwarze 80: case '[':
1.45 kristaps 81: gly = ESCAPE_SPECIAL;
82: term = ']';
83: break;
1.79 schwarze 84: case 'C':
1.65 schwarze 85: if ('\'' != **start)
1.94 ! schwarze 86: return ESCAPE_ERROR;
1.65 schwarze 87: *start = ++*end;
1.87 schwarze 88: gly = ESCAPE_SPECIAL;
1.45 kristaps 89: term = '\'';
90: break;
1.72 schwarze 91:
92: /*
93: * Escapes taking no arguments at all.
94: */
1.79 schwarze 95: case 'd':
1.72 schwarze 96: /* FALLTHROUGH */
1.79 schwarze 97: case 'u':
1.93 schwarze 98: /* FALLTHROUGH */
99: case ',':
100: /* FALLTHROUGH */
101: case '/':
1.94 ! schwarze 102: return ESCAPE_IGNORE;
1.63 schwarze 103:
104: /*
105: * The \z escape is supposed to output the following
1.79 schwarze 106: * character without advancing the cursor position.
1.63 schwarze 107: * Since we are mostly dealing with terminal mode,
108: * let us just skip the next character.
109: */
1.79 schwarze 110: case 'z':
1.94 ! schwarze 111: return ESCAPE_SKIPCHAR;
1.1 kristaps 112:
1.45 kristaps 113: /*
114: * Handle all triggers matching \X(xy, \Xx, and \X[xxxx], where
115: * 'X' is the trigger. These have opaque sub-strings.
116: */
1.79 schwarze 117: case 'F':
1.45 kristaps 118: /* FALLTHROUGH */
1.79 schwarze 119: case 'g':
1.24 kristaps 120: /* FALLTHROUGH */
1.79 schwarze 121: case 'k':
1.24 kristaps 122: /* FALLTHROUGH */
1.79 schwarze 123: case 'M':
1.24 kristaps 124: /* FALLTHROUGH */
1.79 schwarze 125: case 'm':
1.24 kristaps 126: /* FALLTHROUGH */
1.79 schwarze 127: case 'n':
1.24 kristaps 128: /* FALLTHROUGH */
1.79 schwarze 129: case 'V':
1.24 kristaps 130: /* FALLTHROUGH */
1.79 schwarze 131: case 'Y':
1.60 schwarze 132: gly = ESCAPE_IGNORE;
1.24 kristaps 133: /* FALLTHROUGH */
1.79 schwarze 134: case 'f':
1.45 kristaps 135: if (ESCAPE_ERROR == gly)
136: gly = ESCAPE_FONT;
1.65 schwarze 137: switch (**start) {
1.79 schwarze 138: case '(':
1.65 schwarze 139: *start = ++*end;
140: *sz = 2;
1.45 kristaps 141: break;
1.79 schwarze 142: case '[':
1.65 schwarze 143: *start = ++*end;
1.45 kristaps 144: term = ']';
145: break;
146: default:
1.65 schwarze 147: *sz = 1;
1.45 kristaps 148: break;
149: }
150: break;
151:
152: /*
153: * These escapes are of the form \X'Y', where 'X' is the trigger
154: * and 'Y' is any string. These have opaque sub-strings.
1.78 schwarze 155: * The \B and \w escapes are handled in roff.c, roff_res().
1.45 kristaps 156: */
1.79 schwarze 157: case 'A':
1.24 kristaps 158: /* FALLTHROUGH */
1.79 schwarze 159: case 'b':
1.24 kristaps 160: /* FALLTHROUGH */
1.79 schwarze 161: case 'D':
1.24 kristaps 162: /* FALLTHROUGH */
1.79 schwarze 163: case 'R':
1.73 schwarze 164: /* FALLTHROUGH */
1.79 schwarze 165: case 'X':
1.24 kristaps 166: /* FALLTHROUGH */
1.79 schwarze 167: case 'Z':
1.91 schwarze 168: gly = ESCAPE_IGNORE;
169: /* FALLTHROUGH */
170: case 'o':
171: if (**start == '\0')
1.94 ! schwarze 172: return ESCAPE_ERROR;
1.91 schwarze 173: if (gly == ESCAPE_ERROR)
174: gly = ESCAPE_OVERSTRIKE;
1.77 schwarze 175: term = **start;
1.65 schwarze 176: *start = ++*end;
1.24 kristaps 177: break;
1.45 kristaps 178:
179: /*
180: * These escapes are of the form \X'N', where 'X' is the trigger
181: * and 'N' resolves to a numerical expression.
182: */
1.79 schwarze 183: case 'h':
1.28 kristaps 184: /* FALLTHROUGH */
1.79 schwarze 185: case 'H':
1.45 kristaps 186: /* FALLTHROUGH */
1.79 schwarze 187: case 'L':
1.45 kristaps 188: /* FALLTHROUGH */
1.79 schwarze 189: case 'l':
1.45 kristaps 190: /* FALLTHROUGH */
1.79 schwarze 191: case 'S':
1.45 kristaps 192: /* FALLTHROUGH */
1.79 schwarze 193: case 'v':
1.28 kristaps 194: /* FALLTHROUGH */
1.79 schwarze 195: case 'x':
1.82 schwarze 196: if (strchr(" %&()*+-./0123456789:<=>", **start)) {
1.86 kristaps 197: if ('\0' != **start)
198: ++*end;
1.94 ! schwarze 199: return ESCAPE_ERROR;
1.82 schwarze 200: }
1.73 schwarze 201: gly = ESCAPE_IGNORE;
1.77 schwarze 202: term = **start;
1.65 schwarze 203: *start = ++*end;
1.45 kristaps 204: break;
1.60 schwarze 205:
206: /*
207: * Special handling for the numbered character escape.
208: * XXX Do any other escapes need similar handling?
209: */
1.79 schwarze 210: case 'N':
1.65 schwarze 211: if ('\0' == **start)
1.94 ! schwarze 212: return ESCAPE_ERROR;
1.65 schwarze 213: (*end)++;
214: if (isdigit((unsigned char)**start)) {
215: *sz = 1;
1.94 ! schwarze 216: return ESCAPE_IGNORE;
1.65 schwarze 217: }
218: (*start)++;
1.60 schwarze 219: while (isdigit((unsigned char)**end))
220: (*end)++;
1.65 schwarze 221: *sz = *end - *start;
1.60 schwarze 222: if ('\0' != **end)
223: (*end)++;
1.94 ! schwarze 224: return ESCAPE_NUMBERED;
1.45 kristaps 225:
1.79 schwarze 226: /*
1.45 kristaps 227: * Sizes get a special category of their own.
228: */
1.79 schwarze 229: case 's':
1.45 kristaps 230: gly = ESCAPE_IGNORE;
1.28 kristaps 231:
1.45 kristaps 232: /* See +/- counts as a sign. */
1.65 schwarze 233: if ('+' == **end || '-' == **end || ASCII_HYPH == **end)
1.90 schwarze 234: *start = ++*end;
1.8 kristaps 235:
1.65 schwarze 236: switch (**end) {
1.79 schwarze 237: case '(':
1.65 schwarze 238: *start = ++*end;
239: *sz = 2;
1.22 kristaps 240: break;
1.79 schwarze 241: case '[':
1.65 schwarze 242: *start = ++*end;
1.64 schwarze 243: term = ']';
1.22 kristaps 244: break;
1.79 schwarze 245: case '\'':
1.65 schwarze 246: *start = ++*end;
1.64 schwarze 247: term = '\'';
1.92 schwarze 248: break;
249: case '3':
250: /* FALLTHROUGH */
251: case '2':
252: /* FALLTHROUGH */
253: case '1':
254: *sz = (*end)[-1] == 's' &&
255: isdigit((unsigned char)(*end)[1]) ? 2 : 1;
1.22 kristaps 256: break;
257: default:
1.65 schwarze 258: *sz = 1;
1.22 kristaps 259: break;
1.8 kristaps 260: }
261:
1.45 kristaps 262: break;
1.33 kristaps 263:
1.45 kristaps 264: /*
265: * Anything else is assumed to be a glyph.
1.65 schwarze 266: * In this case, pass back the character after the backslash.
1.45 kristaps 267: */
268: default:
269: gly = ESCAPE_SPECIAL;
1.65 schwarze 270: *start = --*end;
271: *sz = 1;
1.22 kristaps 272: break;
1.45 kristaps 273: }
274:
275: assert(ESCAPE_ERROR != gly);
276:
277: /*
1.64 schwarze 278: * Read up to the terminating character,
279: * paying attention to nested escapes.
1.45 kristaps 280: */
281:
282: if ('\0' != term) {
1.64 schwarze 283: while (**end != term) {
284: switch (**end) {
1.79 schwarze 285: case '\0':
1.94 ! schwarze 286: return ESCAPE_ERROR;
1.79 schwarze 287: case '\\':
1.64 schwarze 288: (*end)++;
289: if (ESCAPE_ERROR ==
290: mandoc_escape(end, NULL, NULL))
1.94 ! schwarze 291: return ESCAPE_ERROR;
1.64 schwarze 292: break;
293: default:
294: (*end)++;
295: break;
296: }
297: }
1.65 schwarze 298: *sz = (*end)++ - *start;
1.64 schwarze 299: } else {
1.65 schwarze 300: assert(*sz > 0);
301: if ((size_t)*sz > strlen(*start))
1.94 ! schwarze 302: return ESCAPE_ERROR;
1.65 schwarze 303: *end += *sz;
1.45 kristaps 304: }
305:
306: /* Run post-processors. */
307:
308: switch (gly) {
1.79 schwarze 309: case ESCAPE_FONT:
1.68 schwarze 310: if (2 == *sz) {
311: if ('C' == **start) {
312: /*
313: * Treat constant-width font modes
314: * just like regular font modes.
315: */
316: (*start)++;
317: (*sz)--;
318: } else {
319: if ('B' == (*start)[0] && 'I' == (*start)[1])
320: gly = ESCAPE_FONTBI;
321: break;
322: }
1.65 schwarze 323: } else if (1 != *sz)
1.45 kristaps 324: break;
1.61 kristaps 325:
1.65 schwarze 326: switch (**start) {
1.79 schwarze 327: case '3':
1.45 kristaps 328: /* FALLTHROUGH */
1.79 schwarze 329: case 'B':
1.45 kristaps 330: gly = ESCAPE_FONTBOLD;
331: break;
1.79 schwarze 332: case '2':
1.45 kristaps 333: /* FALLTHROUGH */
1.79 schwarze 334: case 'I':
1.45 kristaps 335: gly = ESCAPE_FONTITALIC;
1.22 kristaps 336: break;
1.79 schwarze 337: case 'P':
1.45 kristaps 338: gly = ESCAPE_FONTPREV;
1.22 kristaps 339: break;
1.79 schwarze 340: case '1':
1.45 kristaps 341: /* FALLTHROUGH */
1.79 schwarze 342: case 'R':
1.45 kristaps 343: gly = ESCAPE_FONTROMAN;
1.1 kristaps 344: break;
345: }
1.46 kristaps 346: break;
1.79 schwarze 347: case ESCAPE_SPECIAL:
1.65 schwarze 348: if (1 == *sz && 'c' == **start)
1.45 kristaps 349: gly = ESCAPE_NOSPACE;
1.87 schwarze 350: /*
1.88 schwarze 351: * Unicode escapes are defined in groff as \[u0000]
1.87 schwarze 352: * to \[u10FFFF], where the contained value must be
353: * a valid Unicode codepoint. Here, however, only
1.88 schwarze 354: * check the length and range.
1.87 schwarze 355: */
1.88 schwarze 356: if (**start != 'u' || *sz < 5 || *sz > 7)
357: break;
358: if (*sz == 7 && ((*start)[1] != '1' || (*start)[2] != '0'))
359: break;
360: if (*sz == 6 && (*start)[1] == '0')
361: break;
362: if ((int)strspn(*start + 1, "0123456789ABCDEFabcdef")
1.87 schwarze 363: + 1 == *sz)
364: gly = ESCAPE_UNICODE;
1.22 kristaps 365: break;
1.1 kristaps 366: default:
1.22 kristaps 367: break;
1.1 kristaps 368: }
369:
1.94 ! schwarze 370: return gly;
1.36 schwarze 371: }
372:
373: /*
374: * Parse a quoted or unquoted roff-style request or macro argument.
375: * Return a pointer to the parsed argument, which is either the original
376: * pointer or advanced by one byte in case the argument is quoted.
1.71 schwarze 377: * NUL-terminate the argument in place.
1.36 schwarze 378: * Collapse pairs of quotes inside quoted arguments.
379: * Advance the argument pointer to the next argument,
1.71 schwarze 380: * or to the NUL byte terminating the argument line.
1.36 schwarze 381: */
382: char *
1.48 kristaps 383: mandoc_getarg(struct mparse *parse, char **cpp, int ln, int *pos)
1.36 schwarze 384: {
385: char *start, *cp;
386: int quoted, pairs, white;
387:
388: /* Quoting can only start with a new word. */
389: start = *cpp;
1.47 kristaps 390: quoted = 0;
1.36 schwarze 391: if ('"' == *start) {
392: quoted = 1;
393: start++;
1.79 schwarze 394: }
1.36 schwarze 395:
396: pairs = 0;
397: white = 0;
398: for (cp = start; '\0' != *cp; cp++) {
1.67 schwarze 399:
400: /*
401: * Move the following text left
402: * after quoted quotes and after "\\" and "\t".
403: */
1.36 schwarze 404: if (pairs)
405: cp[-pairs] = cp[0];
1.67 schwarze 406:
1.36 schwarze 407: if ('\\' == cp[0]) {
1.67 schwarze 408: /*
409: * In copy mode, translate double to single
410: * backslashes and backslash-t to literal tabs.
411: */
412: switch (cp[1]) {
1.79 schwarze 413: case 't':
1.67 schwarze 414: cp[0] = '\t';
415: /* FALLTHROUGH */
1.79 schwarze 416: case '\\':
1.36 schwarze 417: pairs++;
418: cp++;
1.67 schwarze 419: break;
1.79 schwarze 420: case ' ':
1.36 schwarze 421: /* Skip escaped blanks. */
1.67 schwarze 422: if (0 == quoted)
423: cp++;
424: break;
425: default:
426: break;
427: }
1.36 schwarze 428: } else if (0 == quoted) {
429: if (' ' == cp[0]) {
430: /* Unescaped blanks end unquoted args. */
431: white = 1;
432: break;
433: }
434: } else if ('"' == cp[0]) {
435: if ('"' == cp[1]) {
436: /* Quoted quotes collapse. */
437: pairs++;
438: cp++;
439: } else {
440: /* Unquoted quotes end quoted args. */
441: quoted = 2;
442: break;
443: }
444: }
445: }
446:
447: /* Quoted argument without a closing quote. */
1.48 kristaps 448: if (1 == quoted)
1.83 schwarze 449: mandoc_msg(MANDOCERR_ARG_QUOTE, parse, ln, *pos, NULL);
1.36 schwarze 450:
1.71 schwarze 451: /* NUL-terminate this argument and move to the next one. */
1.36 schwarze 452: if (pairs)
453: cp[-pairs] = '\0';
454: if ('\0' != *cp) {
455: *cp++ = '\0';
456: while (' ' == *cp)
457: cp++;
458: }
1.39 kristaps 459: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1.36 schwarze 460: *cpp = cp;
461:
1.48 kristaps 462: if ('\0' == *cp && (white || ' ' == cp[-1]))
1.83 schwarze 463: mandoc_msg(MANDOCERR_SPACE_EOL, parse, ln, *pos, NULL);
1.36 schwarze 464:
1.94 ! schwarze 465: return start;
1.4 kristaps 466: }
1.7 kristaps 467:
468: static int
469: a2time(time_t *t, const char *fmt, const char *p)
470: {
471: struct tm tm;
472: char *pp;
473:
474: memset(&tm, 0, sizeof(struct tm));
475:
1.56 kristaps 476: pp = NULL;
1.85 schwarze 477: #if HAVE_STRPTIME
1.7 kristaps 478: pp = strptime(p, fmt, &tm);
1.56 kristaps 479: #endif
1.7 kristaps 480: if (NULL != pp && '\0' == *pp) {
481: *t = mktime(&tm);
1.94 ! schwarze 482: return 1;
1.7 kristaps 483: }
484:
1.94 ! schwarze 485: return 0;
1.7 kristaps 486: }
487:
1.37 schwarze 488: static char *
489: time2a(time_t t)
490: {
1.56 kristaps 491: struct tm *tm;
1.38 schwarze 492: char *buf, *p;
493: size_t ssz;
1.37 schwarze 494: int isz;
495:
1.56 kristaps 496: tm = localtime(&t);
1.89 schwarze 497: if (tm == NULL)
1.94 ! schwarze 498: return NULL;
1.37 schwarze 499:
1.38 schwarze 500: /*
501: * Reserve space:
502: * up to 9 characters for the month (September) + blank
503: * up to 2 characters for the day + comma + blank
504: * 4 characters for the year and a terminating '\0'
505: */
506: p = buf = mandoc_malloc(10 + 4 + 4 + 1);
507:
1.56 kristaps 508: if (0 == (ssz = strftime(p, 10 + 1, "%B ", tm)))
1.38 schwarze 509: goto fail;
510: p += (int)ssz;
1.37 schwarze 511:
1.56 kristaps 512: if (-1 == (isz = snprintf(p, 4 + 1, "%d, ", tm->tm_mday)))
1.38 schwarze 513: goto fail;
1.37 schwarze 514: p += isz;
515:
1.56 kristaps 516: if (0 == strftime(p, 4 + 1, "%Y", tm))
1.38 schwarze 517: goto fail;
1.94 ! schwarze 518: return buf;
1.38 schwarze 519:
520: fail:
521: free(buf);
1.94 ! schwarze 522: return NULL;
1.37 schwarze 523: }
524:
525: char *
1.42 kristaps 526: mandoc_normdate(struct mparse *parse, char *in, int ln, int pos)
1.7 kristaps 527: {
1.37 schwarze 528: char *out;
1.7 kristaps 529: time_t t;
530:
1.37 schwarze 531: if (NULL == in || '\0' == *in ||
532: 0 == strcmp(in, "$" "Mdocdate$")) {
1.80 schwarze 533: mandoc_msg(MANDOCERR_DATE_MISSING, parse, ln, pos, NULL);
1.37 schwarze 534: time(&t);
535: }
1.62 schwarze 536: else if (a2time(&t, "%Y-%m-%d", in))
537: t = 0;
1.37 schwarze 538: else if (!a2time(&t, "$" "Mdocdate: %b %d %Y $", in) &&
1.62 schwarze 539: !a2time(&t, "%b %d, %Y", in)) {
1.81 schwarze 540: mandoc_msg(MANDOCERR_DATE_BAD, parse, ln, pos, in);
1.37 schwarze 541: t = 0;
1.7 kristaps 542: }
1.37 schwarze 543: out = t ? time2a(t) : NULL;
1.94 ! schwarze 544: return out ? out : mandoc_strdup(in);
1.7 kristaps 545: }
546:
1.12 kristaps 547: int
1.75 schwarze 548: mandoc_eos(const char *p, size_t sz)
1.12 kristaps 549: {
1.75 schwarze 550: const char *q;
551: int enclosed, found;
1.12 kristaps 552:
1.13 kristaps 553: if (0 == sz)
1.94 ! schwarze 554: return 0;
1.12 kristaps 555:
1.14 kristaps 556: /*
557: * End-of-sentence recognition must include situations where
558: * some symbols, such as `)', allow prior EOS punctuation to
1.49 kristaps 559: * propagate outward.
1.14 kristaps 560: */
561:
1.75 schwarze 562: enclosed = found = 0;
1.25 kristaps 563: for (q = p + (int)sz - 1; q >= p; q--) {
1.23 schwarze 564: switch (*q) {
1.79 schwarze 565: case '\"':
1.14 kristaps 566: /* FALLTHROUGH */
1.79 schwarze 567: case '\'':
1.15 kristaps 568: /* FALLTHROUGH */
1.79 schwarze 569: case ']':
1.14 kristaps 570: /* FALLTHROUGH */
1.79 schwarze 571: case ')':
1.23 schwarze 572: if (0 == found)
573: enclosed = 1;
1.14 kristaps 574: break;
1.79 schwarze 575: case '.':
1.14 kristaps 576: /* FALLTHROUGH */
1.79 schwarze 577: case '!':
1.14 kristaps 578: /* FALLTHROUGH */
1.79 schwarze 579: case '?':
1.23 schwarze 580: found = 1;
581: break;
1.14 kristaps 582: default:
1.94 ! schwarze 583: return found &&
! 584: (!enclosed || isalnum((unsigned char)*q));
1.14 kristaps 585: }
1.12 kristaps 586: }
587:
1.94 ! schwarze 588: return found && !enclosed;
1.44 kristaps 589: }
1.50 kristaps 590:
591: /*
592: * Convert a string to a long that may not be <0.
593: * If the string is invalid, or is less than 0, return -1.
594: */
595: int
1.54 kristaps 596: mandoc_strntoi(const char *p, size_t sz, int base)
1.50 kristaps 597: {
598: char buf[32];
599: char *ep;
600: long v;
601:
602: if (sz > 31)
1.94 ! schwarze 603: return -1;
1.50 kristaps 604:
605: memcpy(buf, p, sz);
1.51 kristaps 606: buf[(int)sz] = '\0';
1.50 kristaps 607:
608: errno = 0;
609: v = strtol(buf, &ep, base);
610:
611: if (buf[0] == '\0' || *ep != '\0')
1.94 ! schwarze 612: return -1;
1.50 kristaps 613:
1.54 kristaps 614: if (v > INT_MAX)
615: v = INT_MAX;
616: if (v < INT_MIN)
617: v = INT_MIN;
1.50 kristaps 618:
1.94 ! schwarze 619: return (int)v;
1.50 kristaps 620: }
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