Annotation of mandoc/mandoc.c, Revision 1.105
1.105 ! schwarze 1: /* $Id: mandoc.c,v 1.104 2018/07/28 18:34:15 schwarze Exp $ */
1.1 kristaps 2: /*
1.90 schwarze 3: * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.104 schwarze 4: * Copyright (c) 2011-2015, 2017, 2018 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:
1.101 schwarze 31: #include "mandoc_aux.h"
1.18 kristaps 32: #include "mandoc.h"
1.101 schwarze 33: #include "roff.h"
1.1 kristaps 34: #include "libmandoc.h"
1.37 schwarze 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:
1.45 kristaps 39:
40: enum mandoc_esc
1.74 schwarze 41: mandoc_escape(const char **end, const char **start, int *sz)
1.1 kristaps 42: {
1.65 schwarze 43: const char *local_start;
1.105 ! schwarze 44: int local_sz, c, i;
1.65 schwarze 45: char term;
1.79 schwarze 46: enum mandoc_esc gly;
1.45 kristaps 47:
1.65 schwarze 48: /*
49: * When the caller doesn't provide return storage,
50: * use local storage.
51: */
52:
53: if (NULL == start)
54: start = &local_start;
55: if (NULL == sz)
56: sz = &local_sz;
57:
58: /*
59: * Beyond the backslash, at least one input character
60: * is part of the escape sequence. With one exception
61: * (see below), that character won't be returned.
62: */
63:
1.45 kristaps 64: gly = ESCAPE_ERROR;
1.65 schwarze 65: *start = ++*end;
66: *sz = 0;
1.64 schwarze 67: term = '\0';
1.18 kristaps 68:
1.65 schwarze 69: switch ((*start)[-1]) {
1.45 kristaps 70: /*
71: * First the glyphs. There are several different forms of
72: * these, but each eventually returns a substring of the glyph
73: * name.
74: */
1.79 schwarze 75: case '(':
1.45 kristaps 76: gly = ESCAPE_SPECIAL;
1.65 schwarze 77: *sz = 2;
1.45 kristaps 78: break;
1.79 schwarze 79: case '[':
1.45 kristaps 80: gly = ESCAPE_SPECIAL;
81: term = ']';
82: break;
1.79 schwarze 83: case 'C':
1.65 schwarze 84: if ('\'' != **start)
1.94 schwarze 85: return ESCAPE_ERROR;
1.65 schwarze 86: *start = ++*end;
1.87 schwarze 87: gly = ESCAPE_SPECIAL;
1.45 kristaps 88: term = '\'';
89: break;
1.72 schwarze 90:
91: /*
92: * Escapes taking no arguments at all.
93: */
1.79 schwarze 94: case 'd':
95: case 'u':
1.93 schwarze 96: case ',':
97: case '/':
1.94 schwarze 98: return ESCAPE_IGNORE;
1.102 schwarze 99: case 'p':
100: return ESCAPE_BREAK;
1.63 schwarze 101:
102: /*
103: * The \z escape is supposed to output the following
1.79 schwarze 104: * character without advancing the cursor position.
1.63 schwarze 105: * Since we are mostly dealing with terminal mode,
106: * let us just skip the next character.
107: */
1.79 schwarze 108: case 'z':
1.94 schwarze 109: return ESCAPE_SKIPCHAR;
1.1 kristaps 110:
1.45 kristaps 111: /*
112: * Handle all triggers matching \X(xy, \Xx, and \X[xxxx], where
113: * 'X' is the trigger. These have opaque sub-strings.
114: */
1.79 schwarze 115: case 'F':
116: case 'g':
117: case 'k':
118: case 'M':
119: case 'm':
120: case 'n':
121: case 'V':
122: case 'Y':
1.60 schwarze 123: gly = ESCAPE_IGNORE;
1.24 kristaps 124: /* FALLTHROUGH */
1.79 schwarze 125: case 'f':
1.45 kristaps 126: if (ESCAPE_ERROR == gly)
127: gly = ESCAPE_FONT;
1.65 schwarze 128: switch (**start) {
1.79 schwarze 129: case '(':
1.65 schwarze 130: *start = ++*end;
131: *sz = 2;
1.45 kristaps 132: break;
1.79 schwarze 133: case '[':
1.65 schwarze 134: *start = ++*end;
1.45 kristaps 135: term = ']';
136: break;
137: default:
1.65 schwarze 138: *sz = 1;
1.45 kristaps 139: break;
140: }
141: break;
142:
143: /*
144: * These escapes are of the form \X'Y', where 'X' is the trigger
145: * and 'Y' is any string. These have opaque sub-strings.
1.78 schwarze 146: * The \B and \w escapes are handled in roff.c, roff_res().
1.45 kristaps 147: */
1.79 schwarze 148: case 'A':
149: case 'b':
150: case 'D':
151: case 'R':
152: case 'X':
153: case 'Z':
1.91 schwarze 154: gly = ESCAPE_IGNORE;
155: /* FALLTHROUGH */
156: case 'o':
157: if (**start == '\0')
1.94 schwarze 158: return ESCAPE_ERROR;
1.91 schwarze 159: if (gly == ESCAPE_ERROR)
160: gly = ESCAPE_OVERSTRIKE;
1.77 schwarze 161: term = **start;
1.65 schwarze 162: *start = ++*end;
1.24 kristaps 163: break;
1.45 kristaps 164:
165: /*
166: * These escapes are of the form \X'N', where 'X' is the trigger
167: * and 'N' resolves to a numerical expression.
168: */
1.79 schwarze 169: case 'h':
170: case 'H':
171: case 'L':
172: case 'l':
173: case 'S':
174: case 'v':
175: case 'x':
1.82 schwarze 176: if (strchr(" %&()*+-./0123456789:<=>", **start)) {
1.86 kristaps 177: if ('\0' != **start)
178: ++*end;
1.94 schwarze 179: return ESCAPE_ERROR;
1.82 schwarze 180: }
1.100 schwarze 181: switch ((*start)[-1]) {
182: case 'h':
183: gly = ESCAPE_HORIZ;
184: break;
185: case 'l':
186: gly = ESCAPE_HLINE;
187: break;
188: default:
189: gly = ESCAPE_IGNORE;
190: break;
191: }
1.77 schwarze 192: term = **start;
1.65 schwarze 193: *start = ++*end;
1.45 kristaps 194: break;
1.60 schwarze 195:
196: /*
197: * Special handling for the numbered character escape.
198: * XXX Do any other escapes need similar handling?
199: */
1.79 schwarze 200: case 'N':
1.65 schwarze 201: if ('\0' == **start)
1.94 schwarze 202: return ESCAPE_ERROR;
1.65 schwarze 203: (*end)++;
204: if (isdigit((unsigned char)**start)) {
205: *sz = 1;
1.94 schwarze 206: return ESCAPE_IGNORE;
1.65 schwarze 207: }
208: (*start)++;
1.60 schwarze 209: while (isdigit((unsigned char)**end))
210: (*end)++;
1.65 schwarze 211: *sz = *end - *start;
1.60 schwarze 212: if ('\0' != **end)
213: (*end)++;
1.94 schwarze 214: return ESCAPE_NUMBERED;
1.45 kristaps 215:
1.79 schwarze 216: /*
1.45 kristaps 217: * Sizes get a special category of their own.
218: */
1.79 schwarze 219: case 's':
1.45 kristaps 220: gly = ESCAPE_IGNORE;
1.28 kristaps 221:
1.45 kristaps 222: /* See +/- counts as a sign. */
1.65 schwarze 223: if ('+' == **end || '-' == **end || ASCII_HYPH == **end)
1.90 schwarze 224: *start = ++*end;
1.8 kristaps 225:
1.65 schwarze 226: switch (**end) {
1.79 schwarze 227: case '(':
1.65 schwarze 228: *start = ++*end;
229: *sz = 2;
1.22 kristaps 230: break;
1.79 schwarze 231: case '[':
1.65 schwarze 232: *start = ++*end;
1.64 schwarze 233: term = ']';
1.22 kristaps 234: break;
1.79 schwarze 235: case '\'':
1.65 schwarze 236: *start = ++*end;
1.64 schwarze 237: term = '\'';
1.92 schwarze 238: break;
239: case '3':
240: case '2':
241: case '1':
242: *sz = (*end)[-1] == 's' &&
243: isdigit((unsigned char)(*end)[1]) ? 2 : 1;
1.22 kristaps 244: break;
245: default:
1.65 schwarze 246: *sz = 1;
1.22 kristaps 247: break;
1.8 kristaps 248: }
249:
1.45 kristaps 250: break;
1.33 kristaps 251:
1.45 kristaps 252: /*
253: * Anything else is assumed to be a glyph.
1.65 schwarze 254: * In this case, pass back the character after the backslash.
1.45 kristaps 255: */
256: default:
257: gly = ESCAPE_SPECIAL;
1.65 schwarze 258: *start = --*end;
259: *sz = 1;
1.22 kristaps 260: break;
1.45 kristaps 261: }
262:
263: assert(ESCAPE_ERROR != gly);
264:
265: /*
1.64 schwarze 266: * Read up to the terminating character,
267: * paying attention to nested escapes.
1.45 kristaps 268: */
269:
270: if ('\0' != term) {
1.64 schwarze 271: while (**end != term) {
272: switch (**end) {
1.79 schwarze 273: case '\0':
1.94 schwarze 274: return ESCAPE_ERROR;
1.79 schwarze 275: case '\\':
1.64 schwarze 276: (*end)++;
277: if (ESCAPE_ERROR ==
278: mandoc_escape(end, NULL, NULL))
1.94 schwarze 279: return ESCAPE_ERROR;
1.64 schwarze 280: break;
281: default:
282: (*end)++;
283: break;
284: }
285: }
1.65 schwarze 286: *sz = (*end)++ - *start;
1.64 schwarze 287: } else {
1.65 schwarze 288: assert(*sz > 0);
289: if ((size_t)*sz > strlen(*start))
1.94 schwarze 290: return ESCAPE_ERROR;
1.65 schwarze 291: *end += *sz;
1.45 kristaps 292: }
293:
294: /* Run post-processors. */
295:
296: switch (gly) {
1.79 schwarze 297: case ESCAPE_FONT:
1.68 schwarze 298: if (2 == *sz) {
299: if ('C' == **start) {
300: /*
301: * Treat constant-width font modes
302: * just like regular font modes.
303: */
304: (*start)++;
305: (*sz)--;
306: } else {
307: if ('B' == (*start)[0] && 'I' == (*start)[1])
308: gly = ESCAPE_FONTBI;
309: break;
310: }
1.65 schwarze 311: } else if (1 != *sz)
1.45 kristaps 312: break;
1.61 kristaps 313:
1.65 schwarze 314: switch (**start) {
1.79 schwarze 315: case '3':
316: case 'B':
1.45 kristaps 317: gly = ESCAPE_FONTBOLD;
318: break;
1.79 schwarze 319: case '2':
320: case 'I':
1.45 kristaps 321: gly = ESCAPE_FONTITALIC;
1.22 kristaps 322: break;
1.79 schwarze 323: case 'P':
1.45 kristaps 324: gly = ESCAPE_FONTPREV;
1.22 kristaps 325: break;
1.79 schwarze 326: case '1':
327: case 'R':
1.45 kristaps 328: gly = ESCAPE_FONTROMAN;
1.1 kristaps 329: break;
330: }
1.46 kristaps 331: break;
1.79 schwarze 332: case ESCAPE_SPECIAL:
1.105 ! schwarze 333: if (**start == 'c') {
! 334: if (*sz == 1) {
! 335: gly = ESCAPE_NOSPACE;
! 336: break;
! 337: }
! 338: if (*sz < 6 || *sz > 7 ||
! 339: strncmp(*start, "char", 4) != 0 ||
! 340: (int)strspn(*start + 4, "0123456789") + 4 < *sz)
! 341: break;
! 342: c = 0;
! 343: for (i = 4; i < *sz; i++)
! 344: c = 10 * c + ((*start)[i] - '0');
! 345: if (c < 0x21 || (c > 0x7e && c < 0xa0) || c > 0xff)
! 346: break;
! 347: *start += 4;
! 348: *sz -= 4;
! 349: gly = ESCAPE_NUMBERED;
! 350: break;
! 351: }
! 352:
1.87 schwarze 353: /*
1.88 schwarze 354: * Unicode escapes are defined in groff as \[u0000]
1.87 schwarze 355: * to \[u10FFFF], where the contained value must be
356: * a valid Unicode codepoint. Here, however, only
1.88 schwarze 357: * check the length and range.
1.87 schwarze 358: */
1.88 schwarze 359: if (**start != 'u' || *sz < 5 || *sz > 7)
360: break;
361: if (*sz == 7 && ((*start)[1] != '1' || (*start)[2] != '0'))
362: break;
363: if (*sz == 6 && (*start)[1] == '0')
1.96 schwarze 364: break;
365: if (*sz == 5 && (*start)[1] == 'D' &&
366: strchr("89ABCDEF", (*start)[2]) != NULL)
1.88 schwarze 367: break;
368: if ((int)strspn(*start + 1, "0123456789ABCDEFabcdef")
1.87 schwarze 369: + 1 == *sz)
370: gly = ESCAPE_UNICODE;
1.22 kristaps 371: break;
1.1 kristaps 372: default:
1.22 kristaps 373: break;
1.1 kristaps 374: }
375:
1.94 schwarze 376: return gly;
1.36 schwarze 377: }
378:
379: /*
380: * Parse a quoted or unquoted roff-style request or macro argument.
381: * Return a pointer to the parsed argument, which is either the original
382: * pointer or advanced by one byte in case the argument is quoted.
1.71 schwarze 383: * NUL-terminate the argument in place.
1.36 schwarze 384: * Collapse pairs of quotes inside quoted arguments.
385: * Advance the argument pointer to the next argument,
1.71 schwarze 386: * or to the NUL byte terminating the argument line.
1.36 schwarze 387: */
388: char *
1.48 kristaps 389: mandoc_getarg(struct mparse *parse, char **cpp, int ln, int *pos)
1.36 schwarze 390: {
391: char *start, *cp;
392: int quoted, pairs, white;
393:
394: /* Quoting can only start with a new word. */
395: start = *cpp;
1.47 kristaps 396: quoted = 0;
1.36 schwarze 397: if ('"' == *start) {
398: quoted = 1;
399: start++;
1.79 schwarze 400: }
1.36 schwarze 401:
402: pairs = 0;
403: white = 0;
404: for (cp = start; '\0' != *cp; cp++) {
1.67 schwarze 405:
406: /*
407: * Move the following text left
408: * after quoted quotes and after "\\" and "\t".
409: */
1.36 schwarze 410: if (pairs)
411: cp[-pairs] = cp[0];
1.67 schwarze 412:
1.36 schwarze 413: if ('\\' == cp[0]) {
1.67 schwarze 414: /*
415: * In copy mode, translate double to single
416: * backslashes and backslash-t to literal tabs.
417: */
418: switch (cp[1]) {
1.79 schwarze 419: case 't':
1.67 schwarze 420: cp[0] = '\t';
421: /* FALLTHROUGH */
1.79 schwarze 422: case '\\':
1.36 schwarze 423: pairs++;
424: cp++;
1.67 schwarze 425: break;
1.79 schwarze 426: case ' ':
1.36 schwarze 427: /* Skip escaped blanks. */
1.67 schwarze 428: if (0 == quoted)
429: cp++;
430: break;
431: default:
432: break;
433: }
1.36 schwarze 434: } else if (0 == quoted) {
435: if (' ' == cp[0]) {
436: /* Unescaped blanks end unquoted args. */
437: white = 1;
438: break;
439: }
440: } else if ('"' == cp[0]) {
441: if ('"' == cp[1]) {
442: /* Quoted quotes collapse. */
443: pairs++;
444: cp++;
445: } else {
446: /* Unquoted quotes end quoted args. */
447: quoted = 2;
448: break;
449: }
450: }
451: }
452:
453: /* Quoted argument without a closing quote. */
1.48 kristaps 454: if (1 == quoted)
1.83 schwarze 455: mandoc_msg(MANDOCERR_ARG_QUOTE, parse, ln, *pos, NULL);
1.36 schwarze 456:
1.71 schwarze 457: /* NUL-terminate this argument and move to the next one. */
1.36 schwarze 458: if (pairs)
459: cp[-pairs] = '\0';
460: if ('\0' != *cp) {
461: *cp++ = '\0';
462: while (' ' == *cp)
463: cp++;
464: }
1.39 kristaps 465: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1.36 schwarze 466: *cpp = cp;
467:
1.48 kristaps 468: if ('\0' == *cp && (white || ' ' == cp[-1]))
1.83 schwarze 469: mandoc_msg(MANDOCERR_SPACE_EOL, parse, ln, *pos, NULL);
1.36 schwarze 470:
1.94 schwarze 471: return start;
1.4 kristaps 472: }
1.7 kristaps 473:
474: static int
475: a2time(time_t *t, const char *fmt, const char *p)
476: {
477: struct tm tm;
478: char *pp;
479:
480: memset(&tm, 0, sizeof(struct tm));
481:
1.56 kristaps 482: pp = NULL;
1.85 schwarze 483: #if HAVE_STRPTIME
1.7 kristaps 484: pp = strptime(p, fmt, &tm);
1.56 kristaps 485: #endif
1.7 kristaps 486: if (NULL != pp && '\0' == *pp) {
487: *t = mktime(&tm);
1.94 schwarze 488: return 1;
1.7 kristaps 489: }
490:
1.94 schwarze 491: return 0;
1.7 kristaps 492: }
493:
1.37 schwarze 494: static char *
495: time2a(time_t t)
496: {
1.56 kristaps 497: struct tm *tm;
1.38 schwarze 498: char *buf, *p;
499: size_t ssz;
1.37 schwarze 500: int isz;
501:
1.56 kristaps 502: tm = localtime(&t);
1.89 schwarze 503: if (tm == NULL)
1.94 schwarze 504: return NULL;
1.37 schwarze 505:
1.38 schwarze 506: /*
507: * Reserve space:
508: * up to 9 characters for the month (September) + blank
509: * up to 2 characters for the day + comma + blank
510: * 4 characters for the year and a terminating '\0'
511: */
1.98 schwarze 512:
1.38 schwarze 513: p = buf = mandoc_malloc(10 + 4 + 4 + 1);
514:
1.98 schwarze 515: if ((ssz = strftime(p, 10 + 1, "%B ", tm)) == 0)
1.38 schwarze 516: goto fail;
517: p += (int)ssz;
1.37 schwarze 518:
1.98 schwarze 519: /*
520: * The output format is just "%d" here, not "%2d" or "%02d".
521: * That's also the reason why we can't just format the
522: * date as a whole with "%B %e, %Y" or "%B %d, %Y".
523: * Besides, the present approach is less prone to buffer
524: * overflows, in case anybody should ever introduce the bug
525: * of looking at LC_TIME.
526: */
527:
528: if ((isz = snprintf(p, 4 + 1, "%d, ", tm->tm_mday)) == -1)
1.38 schwarze 529: goto fail;
1.37 schwarze 530: p += isz;
531:
1.98 schwarze 532: if (strftime(p, 4 + 1, "%Y", tm) == 0)
1.38 schwarze 533: goto fail;
1.94 schwarze 534: return buf;
1.38 schwarze 535:
536: fail:
537: free(buf);
1.94 schwarze 538: return NULL;
1.37 schwarze 539: }
540:
541: char *
1.101 schwarze 542: mandoc_normdate(struct roff_man *man, char *in, int ln, int pos)
1.7 kristaps 543: {
1.103 schwarze 544: char *cp;
1.7 kristaps 545: time_t t;
546:
1.98 schwarze 547: /* No date specified: use today's date. */
548:
549: if (in == NULL || *in == '\0' || strcmp(in, "$" "Mdocdate$") == 0) {
1.101 schwarze 550: mandoc_msg(MANDOCERR_DATE_MISSING, man->parse, ln, pos, NULL);
1.98 schwarze 551: return time2a(time(NULL));
1.37 schwarze 552: }
1.98 schwarze 553:
554: /* Valid mdoc(7) date format. */
555:
556: if (a2time(&t, "$" "Mdocdate: %b %d %Y $", in) ||
1.103 schwarze 557: a2time(&t, "%b %d, %Y", in)) {
558: cp = time2a(t);
559: if (t > time(NULL) + 86400)
560: mandoc_msg(MANDOCERR_DATE_FUTURE, man->parse,
1.104 schwarze 561: ln, pos, cp);
562: else if (*in != '$' && strcmp(in, cp) != 0)
563: mandoc_msg(MANDOCERR_DATE_NORM, man->parse,
1.103 schwarze 564: ln, pos, cp);
565: return cp;
566: }
1.98 schwarze 567:
1.101 schwarze 568: /* In man(7), do not warn about the legacy format. */
1.98 schwarze 569:
1.101 schwarze 570: if (a2time(&t, "%Y-%m-%d", in) == 0)
571: mandoc_msg(MANDOCERR_DATE_BAD, man->parse, ln, pos, in);
1.103 schwarze 572: else if (t > time(NULL) + 86400)
573: mandoc_msg(MANDOCERR_DATE_FUTURE, man->parse, ln, pos, in);
1.101 schwarze 574: else if (man->macroset == MACROSET_MDOC)
575: mandoc_vmsg(MANDOCERR_DATE_LEGACY, man->parse,
576: ln, pos, "Dd %s", in);
1.98 schwarze 577:
578: /* Use any non-mdoc(7) date verbatim. */
579:
580: return mandoc_strdup(in);
1.7 kristaps 581: }
582:
1.12 kristaps 583: int
1.75 schwarze 584: mandoc_eos(const char *p, size_t sz)
1.12 kristaps 585: {
1.75 schwarze 586: const char *q;
587: int enclosed, found;
1.12 kristaps 588:
1.13 kristaps 589: if (0 == sz)
1.94 schwarze 590: return 0;
1.12 kristaps 591:
1.14 kristaps 592: /*
593: * End-of-sentence recognition must include situations where
594: * some symbols, such as `)', allow prior EOS punctuation to
1.49 kristaps 595: * propagate outward.
1.14 kristaps 596: */
597:
1.75 schwarze 598: enclosed = found = 0;
1.25 kristaps 599: for (q = p + (int)sz - 1; q >= p; q--) {
1.23 schwarze 600: switch (*q) {
1.79 schwarze 601: case '\"':
602: case '\'':
603: case ']':
604: case ')':
1.23 schwarze 605: if (0 == found)
606: enclosed = 1;
1.14 kristaps 607: break;
1.79 schwarze 608: case '.':
609: case '!':
610: case '?':
1.23 schwarze 611: found = 1;
612: break;
1.14 kristaps 613: default:
1.94 schwarze 614: return found &&
615: (!enclosed || isalnum((unsigned char)*q));
1.14 kristaps 616: }
1.12 kristaps 617: }
618:
1.94 schwarze 619: return found && !enclosed;
1.44 kristaps 620: }
1.50 kristaps 621:
622: /*
623: * Convert a string to a long that may not be <0.
624: * If the string is invalid, or is less than 0, return -1.
625: */
626: int
1.54 kristaps 627: mandoc_strntoi(const char *p, size_t sz, int base)
1.50 kristaps 628: {
629: char buf[32];
630: char *ep;
631: long v;
632:
633: if (sz > 31)
1.94 schwarze 634: return -1;
1.50 kristaps 635:
636: memcpy(buf, p, sz);
1.51 kristaps 637: buf[(int)sz] = '\0';
1.50 kristaps 638:
639: errno = 0;
640: v = strtol(buf, &ep, base);
641:
642: if (buf[0] == '\0' || *ep != '\0')
1.94 schwarze 643: return -1;
1.50 kristaps 644:
1.54 kristaps 645: if (v > INT_MAX)
646: v = INT_MAX;
647: if (v < INT_MIN)
648: v = INT_MIN;
1.50 kristaps 649:
1.94 schwarze 650: return (int)v;
1.50 kristaps 651: }
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