Annotation of mandoc/mandoc.c, Revision 1.107
1.107 ! schwarze 1: /* $Id: mandoc.c,v 1.106 2018/08/16 13:54:06 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: }
1.106 schwarze 141: break;
142: case '*':
143: if (strncmp(*start, "(.T", 3) != 0)
144: abort();
145: gly = ESCAPE_DEVICE;
146: *start = ++*end;
147: *sz = 2;
1.45 kristaps 148: break;
149:
150: /*
151: * These escapes are of the form \X'Y', where 'X' is the trigger
152: * and 'Y' is any string. These have opaque sub-strings.
1.78 schwarze 153: * The \B and \w escapes are handled in roff.c, roff_res().
1.45 kristaps 154: */
1.79 schwarze 155: case 'A':
156: case 'b':
157: case 'D':
158: case 'R':
159: case 'X':
160: case 'Z':
1.91 schwarze 161: gly = ESCAPE_IGNORE;
162: /* FALLTHROUGH */
163: case 'o':
164: if (**start == '\0')
1.94 schwarze 165: return ESCAPE_ERROR;
1.91 schwarze 166: if (gly == ESCAPE_ERROR)
167: gly = ESCAPE_OVERSTRIKE;
1.77 schwarze 168: term = **start;
1.65 schwarze 169: *start = ++*end;
1.24 kristaps 170: break;
1.45 kristaps 171:
172: /*
173: * These escapes are of the form \X'N', where 'X' is the trigger
174: * and 'N' resolves to a numerical expression.
175: */
1.79 schwarze 176: case 'h':
177: case 'H':
178: case 'L':
179: case 'l':
180: case 'S':
181: case 'v':
182: case 'x':
1.82 schwarze 183: if (strchr(" %&()*+-./0123456789:<=>", **start)) {
1.86 kristaps 184: if ('\0' != **start)
185: ++*end;
1.94 schwarze 186: return ESCAPE_ERROR;
1.82 schwarze 187: }
1.100 schwarze 188: switch ((*start)[-1]) {
189: case 'h':
190: gly = ESCAPE_HORIZ;
191: break;
192: case 'l':
193: gly = ESCAPE_HLINE;
194: break;
195: default:
196: gly = ESCAPE_IGNORE;
197: break;
198: }
1.77 schwarze 199: term = **start;
1.65 schwarze 200: *start = ++*end;
1.45 kristaps 201: break;
1.60 schwarze 202:
203: /*
204: * Special handling for the numbered character escape.
205: * XXX Do any other escapes need similar handling?
206: */
1.79 schwarze 207: case 'N':
1.65 schwarze 208: if ('\0' == **start)
1.94 schwarze 209: return ESCAPE_ERROR;
1.65 schwarze 210: (*end)++;
211: if (isdigit((unsigned char)**start)) {
212: *sz = 1;
1.94 schwarze 213: return ESCAPE_IGNORE;
1.65 schwarze 214: }
215: (*start)++;
1.60 schwarze 216: while (isdigit((unsigned char)**end))
217: (*end)++;
1.65 schwarze 218: *sz = *end - *start;
1.60 schwarze 219: if ('\0' != **end)
220: (*end)++;
1.94 schwarze 221: return ESCAPE_NUMBERED;
1.45 kristaps 222:
1.79 schwarze 223: /*
1.45 kristaps 224: * Sizes get a special category of their own.
225: */
1.79 schwarze 226: case 's':
1.45 kristaps 227: gly = ESCAPE_IGNORE;
1.28 kristaps 228:
1.45 kristaps 229: /* See +/- counts as a sign. */
1.65 schwarze 230: if ('+' == **end || '-' == **end || ASCII_HYPH == **end)
1.90 schwarze 231: *start = ++*end;
1.8 kristaps 232:
1.65 schwarze 233: switch (**end) {
1.79 schwarze 234: case '(':
1.65 schwarze 235: *start = ++*end;
236: *sz = 2;
1.22 kristaps 237: break;
1.79 schwarze 238: case '[':
1.65 schwarze 239: *start = ++*end;
1.64 schwarze 240: term = ']';
1.22 kristaps 241: break;
1.79 schwarze 242: case '\'':
1.65 schwarze 243: *start = ++*end;
1.64 schwarze 244: term = '\'';
1.92 schwarze 245: break;
246: case '3':
247: case '2':
248: case '1':
249: *sz = (*end)[-1] == 's' &&
250: isdigit((unsigned char)(*end)[1]) ? 2 : 1;
1.22 kristaps 251: break;
252: default:
1.65 schwarze 253: *sz = 1;
1.22 kristaps 254: break;
1.8 kristaps 255: }
256:
1.45 kristaps 257: break;
1.33 kristaps 258:
1.45 kristaps 259: /*
260: * Anything else is assumed to be a glyph.
1.65 schwarze 261: * In this case, pass back the character after the backslash.
1.45 kristaps 262: */
263: default:
264: gly = ESCAPE_SPECIAL;
1.65 schwarze 265: *start = --*end;
266: *sz = 1;
1.22 kristaps 267: break;
1.45 kristaps 268: }
269:
270: assert(ESCAPE_ERROR != gly);
271:
272: /*
1.64 schwarze 273: * Read up to the terminating character,
274: * paying attention to nested escapes.
1.45 kristaps 275: */
276:
277: if ('\0' != term) {
1.64 schwarze 278: while (**end != term) {
279: switch (**end) {
1.79 schwarze 280: case '\0':
1.94 schwarze 281: return ESCAPE_ERROR;
1.79 schwarze 282: case '\\':
1.64 schwarze 283: (*end)++;
284: if (ESCAPE_ERROR ==
285: mandoc_escape(end, NULL, NULL))
1.94 schwarze 286: return ESCAPE_ERROR;
1.64 schwarze 287: break;
288: default:
289: (*end)++;
290: break;
291: }
292: }
1.65 schwarze 293: *sz = (*end)++ - *start;
1.64 schwarze 294: } else {
1.65 schwarze 295: assert(*sz > 0);
296: if ((size_t)*sz > strlen(*start))
1.94 schwarze 297: return ESCAPE_ERROR;
1.65 schwarze 298: *end += *sz;
1.45 kristaps 299: }
300:
301: /* Run post-processors. */
302:
303: switch (gly) {
1.79 schwarze 304: case ESCAPE_FONT:
1.107 ! schwarze 305: if (*sz == 2) {
! 306: if (**start == 'C') {
1.68 schwarze 307: /*
308: * Treat constant-width font modes
309: * just like regular font modes.
310: */
311: (*start)++;
312: (*sz)--;
313: } else {
1.107 ! schwarze 314: if ((*start)[0] == 'B' && (*start)[1] == 'I')
1.68 schwarze 315: gly = ESCAPE_FONTBI;
316: break;
317: }
1.107 ! schwarze 318: } else if (*sz != 1) {
! 319: if (*sz == 0)
! 320: gly = ESCAPE_FONTPREV;
1.45 kristaps 321: break;
1.107 ! schwarze 322: }
1.61 kristaps 323:
1.65 schwarze 324: switch (**start) {
1.79 schwarze 325: case '3':
326: case 'B':
1.45 kristaps 327: gly = ESCAPE_FONTBOLD;
328: break;
1.79 schwarze 329: case '2':
330: case 'I':
1.45 kristaps 331: gly = ESCAPE_FONTITALIC;
1.22 kristaps 332: break;
1.79 schwarze 333: case 'P':
1.45 kristaps 334: gly = ESCAPE_FONTPREV;
1.22 kristaps 335: break;
1.79 schwarze 336: case '1':
337: case 'R':
1.45 kristaps 338: gly = ESCAPE_FONTROMAN;
1.1 kristaps 339: break;
340: }
1.46 kristaps 341: break;
1.79 schwarze 342: case ESCAPE_SPECIAL:
1.105 schwarze 343: if (**start == 'c') {
344: if (*sz == 1) {
345: gly = ESCAPE_NOSPACE;
346: break;
347: }
348: if (*sz < 6 || *sz > 7 ||
349: strncmp(*start, "char", 4) != 0 ||
350: (int)strspn(*start + 4, "0123456789") + 4 < *sz)
351: break;
352: c = 0;
353: for (i = 4; i < *sz; i++)
354: c = 10 * c + ((*start)[i] - '0');
355: if (c < 0x21 || (c > 0x7e && c < 0xa0) || c > 0xff)
356: break;
357: *start += 4;
358: *sz -= 4;
359: gly = ESCAPE_NUMBERED;
360: break;
361: }
362:
1.87 schwarze 363: /*
1.88 schwarze 364: * Unicode escapes are defined in groff as \[u0000]
1.87 schwarze 365: * to \[u10FFFF], where the contained value must be
366: * a valid Unicode codepoint. Here, however, only
1.88 schwarze 367: * check the length and range.
1.87 schwarze 368: */
1.88 schwarze 369: if (**start != 'u' || *sz < 5 || *sz > 7)
370: break;
371: if (*sz == 7 && ((*start)[1] != '1' || (*start)[2] != '0'))
372: break;
373: if (*sz == 6 && (*start)[1] == '0')
1.96 schwarze 374: break;
375: if (*sz == 5 && (*start)[1] == 'D' &&
376: strchr("89ABCDEF", (*start)[2]) != NULL)
1.88 schwarze 377: break;
378: if ((int)strspn(*start + 1, "0123456789ABCDEFabcdef")
1.87 schwarze 379: + 1 == *sz)
380: gly = ESCAPE_UNICODE;
1.22 kristaps 381: break;
1.1 kristaps 382: default:
1.22 kristaps 383: break;
1.1 kristaps 384: }
385:
1.94 schwarze 386: return gly;
1.36 schwarze 387: }
388:
389: /*
390: * Parse a quoted or unquoted roff-style request or macro argument.
391: * Return a pointer to the parsed argument, which is either the original
392: * pointer or advanced by one byte in case the argument is quoted.
1.71 schwarze 393: * NUL-terminate the argument in place.
1.36 schwarze 394: * Collapse pairs of quotes inside quoted arguments.
395: * Advance the argument pointer to the next argument,
1.71 schwarze 396: * or to the NUL byte terminating the argument line.
1.36 schwarze 397: */
398: char *
1.48 kristaps 399: mandoc_getarg(struct mparse *parse, char **cpp, int ln, int *pos)
1.36 schwarze 400: {
401: char *start, *cp;
402: int quoted, pairs, white;
403:
404: /* Quoting can only start with a new word. */
405: start = *cpp;
1.47 kristaps 406: quoted = 0;
1.36 schwarze 407: if ('"' == *start) {
408: quoted = 1;
409: start++;
1.79 schwarze 410: }
1.36 schwarze 411:
412: pairs = 0;
413: white = 0;
414: for (cp = start; '\0' != *cp; cp++) {
1.67 schwarze 415:
416: /*
417: * Move the following text left
418: * after quoted quotes and after "\\" and "\t".
419: */
1.36 schwarze 420: if (pairs)
421: cp[-pairs] = cp[0];
1.67 schwarze 422:
1.36 schwarze 423: if ('\\' == cp[0]) {
1.67 schwarze 424: /*
425: * In copy mode, translate double to single
426: * backslashes and backslash-t to literal tabs.
427: */
428: switch (cp[1]) {
1.79 schwarze 429: case 't':
1.67 schwarze 430: cp[0] = '\t';
431: /* FALLTHROUGH */
1.79 schwarze 432: case '\\':
1.36 schwarze 433: pairs++;
434: cp++;
1.67 schwarze 435: break;
1.79 schwarze 436: case ' ':
1.36 schwarze 437: /* Skip escaped blanks. */
1.67 schwarze 438: if (0 == quoted)
439: cp++;
440: break;
441: default:
442: break;
443: }
1.36 schwarze 444: } else if (0 == quoted) {
445: if (' ' == cp[0]) {
446: /* Unescaped blanks end unquoted args. */
447: white = 1;
448: break;
449: }
450: } else if ('"' == cp[0]) {
451: if ('"' == cp[1]) {
452: /* Quoted quotes collapse. */
453: pairs++;
454: cp++;
455: } else {
456: /* Unquoted quotes end quoted args. */
457: quoted = 2;
458: break;
459: }
460: }
461: }
462:
463: /* Quoted argument without a closing quote. */
1.48 kristaps 464: if (1 == quoted)
1.83 schwarze 465: mandoc_msg(MANDOCERR_ARG_QUOTE, parse, ln, *pos, NULL);
1.36 schwarze 466:
1.71 schwarze 467: /* NUL-terminate this argument and move to the next one. */
1.36 schwarze 468: if (pairs)
469: cp[-pairs] = '\0';
470: if ('\0' != *cp) {
471: *cp++ = '\0';
472: while (' ' == *cp)
473: cp++;
474: }
1.39 kristaps 475: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1.36 schwarze 476: *cpp = cp;
477:
1.48 kristaps 478: if ('\0' == *cp && (white || ' ' == cp[-1]))
1.83 schwarze 479: mandoc_msg(MANDOCERR_SPACE_EOL, parse, ln, *pos, NULL);
1.36 schwarze 480:
1.94 schwarze 481: return start;
1.4 kristaps 482: }
1.7 kristaps 483:
484: static int
485: a2time(time_t *t, const char *fmt, const char *p)
486: {
487: struct tm tm;
488: char *pp;
489:
490: memset(&tm, 0, sizeof(struct tm));
491:
1.56 kristaps 492: pp = NULL;
1.85 schwarze 493: #if HAVE_STRPTIME
1.7 kristaps 494: pp = strptime(p, fmt, &tm);
1.56 kristaps 495: #endif
1.7 kristaps 496: if (NULL != pp && '\0' == *pp) {
497: *t = mktime(&tm);
1.94 schwarze 498: return 1;
1.7 kristaps 499: }
500:
1.94 schwarze 501: return 0;
1.7 kristaps 502: }
503:
1.37 schwarze 504: static char *
505: time2a(time_t t)
506: {
1.56 kristaps 507: struct tm *tm;
1.38 schwarze 508: char *buf, *p;
509: size_t ssz;
1.37 schwarze 510: int isz;
511:
1.56 kristaps 512: tm = localtime(&t);
1.89 schwarze 513: if (tm == NULL)
1.94 schwarze 514: return NULL;
1.37 schwarze 515:
1.38 schwarze 516: /*
517: * Reserve space:
518: * up to 9 characters for the month (September) + blank
519: * up to 2 characters for the day + comma + blank
520: * 4 characters for the year and a terminating '\0'
521: */
1.98 schwarze 522:
1.38 schwarze 523: p = buf = mandoc_malloc(10 + 4 + 4 + 1);
524:
1.98 schwarze 525: if ((ssz = strftime(p, 10 + 1, "%B ", tm)) == 0)
1.38 schwarze 526: goto fail;
527: p += (int)ssz;
1.37 schwarze 528:
1.98 schwarze 529: /*
530: * The output format is just "%d" here, not "%2d" or "%02d".
531: * That's also the reason why we can't just format the
532: * date as a whole with "%B %e, %Y" or "%B %d, %Y".
533: * Besides, the present approach is less prone to buffer
534: * overflows, in case anybody should ever introduce the bug
535: * of looking at LC_TIME.
536: */
537:
538: if ((isz = snprintf(p, 4 + 1, "%d, ", tm->tm_mday)) == -1)
1.38 schwarze 539: goto fail;
1.37 schwarze 540: p += isz;
541:
1.98 schwarze 542: if (strftime(p, 4 + 1, "%Y", tm) == 0)
1.38 schwarze 543: goto fail;
1.94 schwarze 544: return buf;
1.38 schwarze 545:
546: fail:
547: free(buf);
1.94 schwarze 548: return NULL;
1.37 schwarze 549: }
550:
551: char *
1.101 schwarze 552: mandoc_normdate(struct roff_man *man, char *in, int ln, int pos)
1.7 kristaps 553: {
1.103 schwarze 554: char *cp;
1.7 kristaps 555: time_t t;
556:
1.98 schwarze 557: /* No date specified: use today's date. */
558:
559: if (in == NULL || *in == '\0' || strcmp(in, "$" "Mdocdate$") == 0) {
1.101 schwarze 560: mandoc_msg(MANDOCERR_DATE_MISSING, man->parse, ln, pos, NULL);
1.98 schwarze 561: return time2a(time(NULL));
1.37 schwarze 562: }
1.98 schwarze 563:
564: /* Valid mdoc(7) date format. */
565:
566: if (a2time(&t, "$" "Mdocdate: %b %d %Y $", in) ||
1.103 schwarze 567: a2time(&t, "%b %d, %Y", in)) {
568: cp = time2a(t);
569: if (t > time(NULL) + 86400)
570: mandoc_msg(MANDOCERR_DATE_FUTURE, man->parse,
1.104 schwarze 571: ln, pos, cp);
572: else if (*in != '$' && strcmp(in, cp) != 0)
573: mandoc_msg(MANDOCERR_DATE_NORM, man->parse,
1.103 schwarze 574: ln, pos, cp);
575: return cp;
576: }
1.98 schwarze 577:
1.101 schwarze 578: /* In man(7), do not warn about the legacy format. */
1.98 schwarze 579:
1.101 schwarze 580: if (a2time(&t, "%Y-%m-%d", in) == 0)
581: mandoc_msg(MANDOCERR_DATE_BAD, man->parse, ln, pos, in);
1.103 schwarze 582: else if (t > time(NULL) + 86400)
583: mandoc_msg(MANDOCERR_DATE_FUTURE, man->parse, ln, pos, in);
1.101 schwarze 584: else if (man->macroset == MACROSET_MDOC)
585: mandoc_vmsg(MANDOCERR_DATE_LEGACY, man->parse,
586: ln, pos, "Dd %s", in);
1.98 schwarze 587:
588: /* Use any non-mdoc(7) date verbatim. */
589:
590: return mandoc_strdup(in);
1.7 kristaps 591: }
592:
1.12 kristaps 593: int
1.75 schwarze 594: mandoc_eos(const char *p, size_t sz)
1.12 kristaps 595: {
1.75 schwarze 596: const char *q;
597: int enclosed, found;
1.12 kristaps 598:
1.13 kristaps 599: if (0 == sz)
1.94 schwarze 600: return 0;
1.12 kristaps 601:
1.14 kristaps 602: /*
603: * End-of-sentence recognition must include situations where
604: * some symbols, such as `)', allow prior EOS punctuation to
1.49 kristaps 605: * propagate outward.
1.14 kristaps 606: */
607:
1.75 schwarze 608: enclosed = found = 0;
1.25 kristaps 609: for (q = p + (int)sz - 1; q >= p; q--) {
1.23 schwarze 610: switch (*q) {
1.79 schwarze 611: case '\"':
612: case '\'':
613: case ']':
614: case ')':
1.23 schwarze 615: if (0 == found)
616: enclosed = 1;
1.14 kristaps 617: break;
1.79 schwarze 618: case '.':
619: case '!':
620: case '?':
1.23 schwarze 621: found = 1;
622: break;
1.14 kristaps 623: default:
1.94 schwarze 624: return found &&
625: (!enclosed || isalnum((unsigned char)*q));
1.14 kristaps 626: }
1.12 kristaps 627: }
628:
1.94 schwarze 629: return found && !enclosed;
1.44 kristaps 630: }
1.50 kristaps 631:
632: /*
633: * Convert a string to a long that may not be <0.
634: * If the string is invalid, or is less than 0, return -1.
635: */
636: int
1.54 kristaps 637: mandoc_strntoi(const char *p, size_t sz, int base)
1.50 kristaps 638: {
639: char buf[32];
640: char *ep;
641: long v;
642:
643: if (sz > 31)
1.94 schwarze 644: return -1;
1.50 kristaps 645:
646: memcpy(buf, p, sz);
1.51 kristaps 647: buf[(int)sz] = '\0';
1.50 kristaps 648:
649: errno = 0;
650: v = strtol(buf, &ep, base);
651:
652: if (buf[0] == '\0' || *ep != '\0')
1.94 schwarze 653: return -1;
1.50 kristaps 654:
1.54 kristaps 655: if (v > INT_MAX)
656: v = INT_MAX;
657: if (v < INT_MIN)
658: v = INT_MIN;
1.50 kristaps 659:
1.94 schwarze 660: return (int)v;
1.50 kristaps 661: }
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