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Annotation of mandoc/mandoc.c, Revision 1.96

1.96    ! schwarze    1: /*     $Id: mandoc.c,v 1.95 2015/10/12 00:08:15 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':
                     96:        case 'u':
1.93      schwarze   97:        case ',':
                     98:        case '/':
1.94      schwarze   99:                return ESCAPE_IGNORE;
1.63      schwarze  100:
                    101:        /*
                    102:         * The \z escape is supposed to output the following
1.79      schwarze  103:         * character without advancing the cursor position.
1.63      schwarze  104:         * Since we are mostly dealing with terminal mode,
                    105:         * let us just skip the next character.
                    106:         */
1.79      schwarze  107:        case 'z':
1.94      schwarze  108:                return ESCAPE_SKIPCHAR;
1.1       kristaps  109:
1.45      kristaps  110:        /*
                    111:         * Handle all triggers matching \X(xy, \Xx, and \X[xxxx], where
                    112:         * 'X' is the trigger.  These have opaque sub-strings.
                    113:         */
1.79      schwarze  114:        case 'F':
                    115:        case 'g':
                    116:        case 'k':
                    117:        case 'M':
                    118:        case 'm':
                    119:        case 'n':
                    120:        case 'V':
                    121:        case 'Y':
1.60      schwarze  122:                gly = ESCAPE_IGNORE;
1.24      kristaps  123:                /* FALLTHROUGH */
1.79      schwarze  124:        case 'f':
1.45      kristaps  125:                if (ESCAPE_ERROR == gly)
                    126:                        gly = ESCAPE_FONT;
1.65      schwarze  127:                switch (**start) {
1.79      schwarze  128:                case '(':
1.65      schwarze  129:                        *start = ++*end;
                    130:                        *sz = 2;
1.45      kristaps  131:                        break;
1.79      schwarze  132:                case '[':
1.65      schwarze  133:                        *start = ++*end;
1.45      kristaps  134:                        term = ']';
                    135:                        break;
                    136:                default:
1.65      schwarze  137:                        *sz = 1;
1.45      kristaps  138:                        break;
                    139:                }
                    140:                break;
                    141:
                    142:        /*
                    143:         * These escapes are of the form \X'Y', where 'X' is the trigger
                    144:         * and 'Y' is any string.  These have opaque sub-strings.
1.78      schwarze  145:         * The \B and \w escapes are handled in roff.c, roff_res().
1.45      kristaps  146:         */
1.79      schwarze  147:        case 'A':
                    148:        case 'b':
                    149:        case 'D':
                    150:        case 'R':
                    151:        case 'X':
                    152:        case 'Z':
1.91      schwarze  153:                gly = ESCAPE_IGNORE;
                    154:                /* FALLTHROUGH */
                    155:        case 'o':
                    156:                if (**start == '\0')
1.94      schwarze  157:                        return ESCAPE_ERROR;
1.91      schwarze  158:                if (gly == ESCAPE_ERROR)
                    159:                        gly = ESCAPE_OVERSTRIKE;
1.77      schwarze  160:                term = **start;
1.65      schwarze  161:                *start = ++*end;
1.24      kristaps  162:                break;
1.45      kristaps  163:
                    164:        /*
                    165:         * These escapes are of the form \X'N', where 'X' is the trigger
                    166:         * and 'N' resolves to a numerical expression.
                    167:         */
1.79      schwarze  168:        case 'h':
                    169:        case 'H':
                    170:        case 'L':
                    171:        case 'l':
                    172:        case 'S':
                    173:        case 'v':
                    174:        case 'x':
1.82      schwarze  175:                if (strchr(" %&()*+-./0123456789:<=>", **start)) {
1.86      kristaps  176:                        if ('\0' != **start)
                    177:                                ++*end;
1.94      schwarze  178:                        return ESCAPE_ERROR;
1.82      schwarze  179:                }
1.73      schwarze  180:                gly = ESCAPE_IGNORE;
1.77      schwarze  181:                term = **start;
1.65      schwarze  182:                *start = ++*end;
1.45      kristaps  183:                break;
1.60      schwarze  184:
                    185:        /*
                    186:         * Special handling for the numbered character escape.
                    187:         * XXX Do any other escapes need similar handling?
                    188:         */
1.79      schwarze  189:        case 'N':
1.65      schwarze  190:                if ('\0' == **start)
1.94      schwarze  191:                        return ESCAPE_ERROR;
1.65      schwarze  192:                (*end)++;
                    193:                if (isdigit((unsigned char)**start)) {
                    194:                        *sz = 1;
1.94      schwarze  195:                        return ESCAPE_IGNORE;
1.65      schwarze  196:                }
                    197:                (*start)++;
1.60      schwarze  198:                while (isdigit((unsigned char)**end))
                    199:                        (*end)++;
1.65      schwarze  200:                *sz = *end - *start;
1.60      schwarze  201:                if ('\0' != **end)
                    202:                        (*end)++;
1.94      schwarze  203:                return ESCAPE_NUMBERED;
1.45      kristaps  204:
1.79      schwarze  205:        /*
1.45      kristaps  206:         * Sizes get a special category of their own.
                    207:         */
1.79      schwarze  208:        case 's':
1.45      kristaps  209:                gly = ESCAPE_IGNORE;
1.28      kristaps  210:
1.45      kristaps  211:                /* See +/- counts as a sign. */
1.65      schwarze  212:                if ('+' == **end || '-' == **end || ASCII_HYPH == **end)
1.90      schwarze  213:                        *start = ++*end;
1.8       kristaps  214:
1.65      schwarze  215:                switch (**end) {
1.79      schwarze  216:                case '(':
1.65      schwarze  217:                        *start = ++*end;
                    218:                        *sz = 2;
1.22      kristaps  219:                        break;
1.79      schwarze  220:                case '[':
1.65      schwarze  221:                        *start = ++*end;
1.64      schwarze  222:                        term = ']';
1.22      kristaps  223:                        break;
1.79      schwarze  224:                case '\'':
1.65      schwarze  225:                        *start = ++*end;
1.64      schwarze  226:                        term = '\'';
1.92      schwarze  227:                        break;
                    228:                case '3':
                    229:                case '2':
                    230:                case '1':
                    231:                        *sz = (*end)[-1] == 's' &&
                    232:                            isdigit((unsigned char)(*end)[1]) ? 2 : 1;
1.22      kristaps  233:                        break;
                    234:                default:
1.65      schwarze  235:                        *sz = 1;
1.22      kristaps  236:                        break;
1.8       kristaps  237:                }
                    238:
1.45      kristaps  239:                break;
1.33      kristaps  240:
1.45      kristaps  241:        /*
                    242:         * Anything else is assumed to be a glyph.
1.65      schwarze  243:         * In this case, pass back the character after the backslash.
1.45      kristaps  244:         */
                    245:        default:
                    246:                gly = ESCAPE_SPECIAL;
1.65      schwarze  247:                *start = --*end;
                    248:                *sz = 1;
1.22      kristaps  249:                break;
1.45      kristaps  250:        }
                    251:
                    252:        assert(ESCAPE_ERROR != gly);
                    253:
                    254:        /*
1.64      schwarze  255:         * Read up to the terminating character,
                    256:         * paying attention to nested escapes.
1.45      kristaps  257:         */
                    258:
                    259:        if ('\0' != term) {
1.64      schwarze  260:                while (**end != term) {
                    261:                        switch (**end) {
1.79      schwarze  262:                        case '\0':
1.94      schwarze  263:                                return ESCAPE_ERROR;
1.79      schwarze  264:                        case '\\':
1.64      schwarze  265:                                (*end)++;
                    266:                                if (ESCAPE_ERROR ==
                    267:                                    mandoc_escape(end, NULL, NULL))
1.94      schwarze  268:                                        return ESCAPE_ERROR;
1.64      schwarze  269:                                break;
                    270:                        default:
                    271:                                (*end)++;
                    272:                                break;
                    273:                        }
                    274:                }
1.65      schwarze  275:                *sz = (*end)++ - *start;
1.64      schwarze  276:        } else {
1.65      schwarze  277:                assert(*sz > 0);
                    278:                if ((size_t)*sz > strlen(*start))
1.94      schwarze  279:                        return ESCAPE_ERROR;
1.65      schwarze  280:                *end += *sz;
1.45      kristaps  281:        }
                    282:
                    283:        /* Run post-processors. */
                    284:
                    285:        switch (gly) {
1.79      schwarze  286:        case ESCAPE_FONT:
1.68      schwarze  287:                if (2 == *sz) {
                    288:                        if ('C' == **start) {
                    289:                                /*
                    290:                                 * Treat constant-width font modes
                    291:                                 * just like regular font modes.
                    292:                                 */
                    293:                                (*start)++;
                    294:                                (*sz)--;
                    295:                        } else {
                    296:                                if ('B' == (*start)[0] && 'I' == (*start)[1])
                    297:                                        gly = ESCAPE_FONTBI;
                    298:                                break;
                    299:                        }
1.65      schwarze  300:                } else if (1 != *sz)
1.45      kristaps  301:                        break;
1.61      kristaps  302:
1.65      schwarze  303:                switch (**start) {
1.79      schwarze  304:                case '3':
                    305:                case 'B':
1.45      kristaps  306:                        gly = ESCAPE_FONTBOLD;
                    307:                        break;
1.79      schwarze  308:                case '2':
                    309:                case 'I':
1.45      kristaps  310:                        gly = ESCAPE_FONTITALIC;
1.22      kristaps  311:                        break;
1.79      schwarze  312:                case 'P':
1.45      kristaps  313:                        gly = ESCAPE_FONTPREV;
1.22      kristaps  314:                        break;
1.79      schwarze  315:                case '1':
                    316:                case 'R':
1.45      kristaps  317:                        gly = ESCAPE_FONTROMAN;
1.1       kristaps  318:                        break;
                    319:                }
1.46      kristaps  320:                break;
1.79      schwarze  321:        case ESCAPE_SPECIAL:
1.65      schwarze  322:                if (1 == *sz && 'c' == **start)
1.45      kristaps  323:                        gly = ESCAPE_NOSPACE;
1.87      schwarze  324:                /*
1.88      schwarze  325:                 * Unicode escapes are defined in groff as \[u0000]
1.87      schwarze  326:                 * to \[u10FFFF], where the contained value must be
                    327:                 * a valid Unicode codepoint.  Here, however, only
1.88      schwarze  328:                 * check the length and range.
1.87      schwarze  329:                 */
1.88      schwarze  330:                if (**start != 'u' || *sz < 5 || *sz > 7)
                    331:                        break;
                    332:                if (*sz == 7 && ((*start)[1] != '1' || (*start)[2] != '0'))
                    333:                        break;
                    334:                if (*sz == 6 && (*start)[1] == '0')
1.96    ! schwarze  335:                        break;
        !           336:                if (*sz == 5 && (*start)[1] == 'D' &&
        !           337:                    strchr("89ABCDEF", (*start)[2]) != NULL)
1.88      schwarze  338:                        break;
                    339:                if ((int)strspn(*start + 1, "0123456789ABCDEFabcdef")
1.87      schwarze  340:                    + 1 == *sz)
                    341:                        gly = ESCAPE_UNICODE;
1.22      kristaps  342:                break;
1.1       kristaps  343:        default:
1.22      kristaps  344:                break;
1.1       kristaps  345:        }
                    346:
1.94      schwarze  347:        return gly;
1.36      schwarze  348: }
                    349:
                    350: /*
                    351:  * Parse a quoted or unquoted roff-style request or macro argument.
                    352:  * Return a pointer to the parsed argument, which is either the original
                    353:  * pointer or advanced by one byte in case the argument is quoted.
1.71      schwarze  354:  * NUL-terminate the argument in place.
1.36      schwarze  355:  * Collapse pairs of quotes inside quoted arguments.
                    356:  * Advance the argument pointer to the next argument,
1.71      schwarze  357:  * or to the NUL byte terminating the argument line.
1.36      schwarze  358:  */
                    359: char *
1.48      kristaps  360: mandoc_getarg(struct mparse *parse, char **cpp, int ln, int *pos)
1.36      schwarze  361: {
                    362:        char     *start, *cp;
                    363:        int       quoted, pairs, white;
                    364:
                    365:        /* Quoting can only start with a new word. */
                    366:        start = *cpp;
1.47      kristaps  367:        quoted = 0;
1.36      schwarze  368:        if ('"' == *start) {
                    369:                quoted = 1;
                    370:                start++;
1.79      schwarze  371:        }
1.36      schwarze  372:
                    373:        pairs = 0;
                    374:        white = 0;
                    375:        for (cp = start; '\0' != *cp; cp++) {
1.67      schwarze  376:
                    377:                /*
                    378:                 * Move the following text left
                    379:                 * after quoted quotes and after "\\" and "\t".
                    380:                 */
1.36      schwarze  381:                if (pairs)
                    382:                        cp[-pairs] = cp[0];
1.67      schwarze  383:
1.36      schwarze  384:                if ('\\' == cp[0]) {
1.67      schwarze  385:                        /*
                    386:                         * In copy mode, translate double to single
                    387:                         * backslashes and backslash-t to literal tabs.
                    388:                         */
                    389:                        switch (cp[1]) {
1.79      schwarze  390:                        case 't':
1.67      schwarze  391:                                cp[0] = '\t';
                    392:                                /* FALLTHROUGH */
1.79      schwarze  393:                        case '\\':
1.36      schwarze  394:                                pairs++;
                    395:                                cp++;
1.67      schwarze  396:                                break;
1.79      schwarze  397:                        case ' ':
1.36      schwarze  398:                                /* Skip escaped blanks. */
1.67      schwarze  399:                                if (0 == quoted)
                    400:                                        cp++;
                    401:                                break;
                    402:                        default:
                    403:                                break;
                    404:                        }
1.36      schwarze  405:                } else if (0 == quoted) {
                    406:                        if (' ' == cp[0]) {
                    407:                                /* Unescaped blanks end unquoted args. */
                    408:                                white = 1;
                    409:                                break;
                    410:                        }
                    411:                } else if ('"' == cp[0]) {
                    412:                        if ('"' == cp[1]) {
                    413:                                /* Quoted quotes collapse. */
                    414:                                pairs++;
                    415:                                cp++;
                    416:                        } else {
                    417:                                /* Unquoted quotes end quoted args. */
                    418:                                quoted = 2;
                    419:                                break;
                    420:                        }
                    421:                }
                    422:        }
                    423:
                    424:        /* Quoted argument without a closing quote. */
1.48      kristaps  425:        if (1 == quoted)
1.83      schwarze  426:                mandoc_msg(MANDOCERR_ARG_QUOTE, parse, ln, *pos, NULL);
1.36      schwarze  427:
1.71      schwarze  428:        /* NUL-terminate this argument and move to the next one. */
1.36      schwarze  429:        if (pairs)
                    430:                cp[-pairs] = '\0';
                    431:        if ('\0' != *cp) {
                    432:                *cp++ = '\0';
                    433:                while (' ' == *cp)
                    434:                        cp++;
                    435:        }
1.39      kristaps  436:        *pos += (int)(cp - start) + (quoted ? 1 : 0);
1.36      schwarze  437:        *cpp = cp;
                    438:
1.48      kristaps  439:        if ('\0' == *cp && (white || ' ' == cp[-1]))
1.83      schwarze  440:                mandoc_msg(MANDOCERR_SPACE_EOL, parse, ln, *pos, NULL);
1.36      schwarze  441:
1.94      schwarze  442:        return start;
1.4       kristaps  443: }
1.7       kristaps  444:
                    445: static int
                    446: a2time(time_t *t, const char *fmt, const char *p)
                    447: {
                    448:        struct tm        tm;
                    449:        char            *pp;
                    450:
                    451:        memset(&tm, 0, sizeof(struct tm));
                    452:
1.56      kristaps  453:        pp = NULL;
1.85      schwarze  454: #if HAVE_STRPTIME
1.7       kristaps  455:        pp = strptime(p, fmt, &tm);
1.56      kristaps  456: #endif
1.7       kristaps  457:        if (NULL != pp && '\0' == *pp) {
                    458:                *t = mktime(&tm);
1.94      schwarze  459:                return 1;
1.7       kristaps  460:        }
                    461:
1.94      schwarze  462:        return 0;
1.7       kristaps  463: }
                    464:
1.37      schwarze  465: static char *
                    466: time2a(time_t t)
                    467: {
1.56      kristaps  468:        struct tm       *tm;
1.38      schwarze  469:        char            *buf, *p;
                    470:        size_t           ssz;
1.37      schwarze  471:        int              isz;
                    472:
1.56      kristaps  473:        tm = localtime(&t);
1.89      schwarze  474:        if (tm == NULL)
1.94      schwarze  475:                return NULL;
1.37      schwarze  476:
1.38      schwarze  477:        /*
                    478:         * Reserve space:
                    479:         * up to 9 characters for the month (September) + blank
                    480:         * up to 2 characters for the day + comma + blank
                    481:         * 4 characters for the year and a terminating '\0'
                    482:         */
                    483:        p = buf = mandoc_malloc(10 + 4 + 4 + 1);
                    484:
1.56      kristaps  485:        if (0 == (ssz = strftime(p, 10 + 1, "%B ", tm)))
1.38      schwarze  486:                goto fail;
                    487:        p += (int)ssz;
1.37      schwarze  488:
1.56      kristaps  489:        if (-1 == (isz = snprintf(p, 4 + 1, "%d, ", tm->tm_mday)))
1.38      schwarze  490:                goto fail;
1.37      schwarze  491:        p += isz;
                    492:
1.56      kristaps  493:        if (0 == strftime(p, 4 + 1, "%Y", tm))
1.38      schwarze  494:                goto fail;
1.94      schwarze  495:        return buf;
1.38      schwarze  496:
                    497: fail:
                    498:        free(buf);
1.94      schwarze  499:        return NULL;
1.37      schwarze  500: }
                    501:
                    502: char *
1.42      kristaps  503: mandoc_normdate(struct mparse *parse, char *in, int ln, int pos)
1.7       kristaps  504: {
1.37      schwarze  505:        char            *out;
1.7       kristaps  506:        time_t           t;
                    507:
1.37      schwarze  508:        if (NULL == in || '\0' == *in ||
                    509:            0 == strcmp(in, "$" "Mdocdate$")) {
1.80      schwarze  510:                mandoc_msg(MANDOCERR_DATE_MISSING, parse, ln, pos, NULL);
1.37      schwarze  511:                time(&t);
                    512:        }
1.62      schwarze  513:        else if (a2time(&t, "%Y-%m-%d", in))
                    514:                t = 0;
1.37      schwarze  515:        else if (!a2time(&t, "$" "Mdocdate: %b %d %Y $", in) &&
1.62      schwarze  516:            !a2time(&t, "%b %d, %Y", in)) {
1.81      schwarze  517:                mandoc_msg(MANDOCERR_DATE_BAD, parse, ln, pos, in);
1.37      schwarze  518:                t = 0;
1.7       kristaps  519:        }
1.37      schwarze  520:        out = t ? time2a(t) : NULL;
1.94      schwarze  521:        return out ? out : mandoc_strdup(in);
1.7       kristaps  522: }
                    523:
1.12      kristaps  524: int
1.75      schwarze  525: mandoc_eos(const char *p, size_t sz)
1.12      kristaps  526: {
1.75      schwarze  527:        const char      *q;
                    528:        int              enclosed, found;
1.12      kristaps  529:
1.13      kristaps  530:        if (0 == sz)
1.94      schwarze  531:                return 0;
1.12      kristaps  532:
1.14      kristaps  533:        /*
                    534:         * End-of-sentence recognition must include situations where
                    535:         * some symbols, such as `)', allow prior EOS punctuation to
1.49      kristaps  536:         * propagate outward.
1.14      kristaps  537:         */
                    538:
1.75      schwarze  539:        enclosed = found = 0;
1.25      kristaps  540:        for (q = p + (int)sz - 1; q >= p; q--) {
1.23      schwarze  541:                switch (*q) {
1.79      schwarze  542:                case '\"':
                    543:                case '\'':
                    544:                case ']':
                    545:                case ')':
1.23      schwarze  546:                        if (0 == found)
                    547:                                enclosed = 1;
1.14      kristaps  548:                        break;
1.79      schwarze  549:                case '.':
                    550:                case '!':
                    551:                case '?':
1.23      schwarze  552:                        found = 1;
                    553:                        break;
1.14      kristaps  554:                default:
1.94      schwarze  555:                        return found &&
                    556:                            (!enclosed || isalnum((unsigned char)*q));
1.14      kristaps  557:                }
1.12      kristaps  558:        }
                    559:
1.94      schwarze  560:        return found && !enclosed;
1.44      kristaps  561: }
1.50      kristaps  562:
                    563: /*
                    564:  * Convert a string to a long that may not be <0.
                    565:  * If the string is invalid, or is less than 0, return -1.
                    566:  */
                    567: int
1.54      kristaps  568: mandoc_strntoi(const char *p, size_t sz, int base)
1.50      kristaps  569: {
                    570:        char             buf[32];
                    571:        char            *ep;
                    572:        long             v;
                    573:
                    574:        if (sz > 31)
1.94      schwarze  575:                return -1;
1.50      kristaps  576:
                    577:        memcpy(buf, p, sz);
1.51      kristaps  578:        buf[(int)sz] = '\0';
1.50      kristaps  579:
                    580:        errno = 0;
                    581:        v = strtol(buf, &ep, base);
                    582:
                    583:        if (buf[0] == '\0' || *ep != '\0')
1.94      schwarze  584:                return -1;
1.50      kristaps  585:
1.54      kristaps  586:        if (v > INT_MAX)
                    587:                v = INT_MAX;
                    588:        if (v < INT_MIN)
                    589:                v = INT_MIN;
1.50      kristaps  590:
1.94      schwarze  591:        return (int)v;
1.50      kristaps  592: }

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