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Annotation of mandoc/mandoc.c, Revision 1.97

1.97    ! schwarze    1: /*     $Id: mandoc.c,v 1.96 2015/10/13 23:30:50 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"
1.37      schwarze   34:
1.18      kristaps   35: static int      a2time(time_t *, const char *, const char *);
1.37      schwarze   36: static char    *time2a(time_t);
1.7       kristaps   37:
1.45      kristaps   38:
                     39: enum mandoc_esc
1.74      schwarze   40: mandoc_escape(const char **end, const char **start, int *sz)
1.1       kristaps   41: {
1.65      schwarze   42:        const char      *local_start;
                     43:        int              local_sz;
                     44:        char             term;
1.79      schwarze   45:        enum mandoc_esc  gly;
1.45      kristaps   46:
1.65      schwarze   47:        /*
                     48:         * When the caller doesn't provide return storage,
                     49:         * use local storage.
                     50:         */
                     51:
                     52:        if (NULL == start)
                     53:                start = &local_start;
                     54:        if (NULL == sz)
                     55:                sz = &local_sz;
                     56:
                     57:        /*
                     58:         * Beyond the backslash, at least one input character
                     59:         * is part of the escape sequence.  With one exception
                     60:         * (see below), that character won't be returned.
                     61:         */
                     62:
1.45      kristaps   63:        gly = ESCAPE_ERROR;
1.65      schwarze   64:        *start = ++*end;
                     65:        *sz = 0;
1.64      schwarze   66:        term = '\0';
1.18      kristaps   67:
1.65      schwarze   68:        switch ((*start)[-1]) {
1.45      kristaps   69:        /*
                     70:         * First the glyphs.  There are several different forms of
                     71:         * these, but each eventually returns a substring of the glyph
                     72:         * name.
                     73:         */
1.79      schwarze   74:        case '(':
1.45      kristaps   75:                gly = ESCAPE_SPECIAL;
1.65      schwarze   76:                *sz = 2;
1.45      kristaps   77:                break;
1.79      schwarze   78:        case '[':
1.45      kristaps   79:                gly = ESCAPE_SPECIAL;
                     80:                term = ']';
                     81:                break;
1.79      schwarze   82:        case 'C':
1.65      schwarze   83:                if ('\'' != **start)
1.94      schwarze   84:                        return ESCAPE_ERROR;
1.65      schwarze   85:                *start = ++*end;
1.87      schwarze   86:                gly = ESCAPE_SPECIAL;
1.45      kristaps   87:                term = '\'';
                     88:                break;
1.72      schwarze   89:
                     90:        /*
                     91:         * Escapes taking no arguments at all.
                     92:         */
1.79      schwarze   93:        case 'd':
                     94:        case 'u':
1.93      schwarze   95:        case ',':
                     96:        case '/':
1.94      schwarze   97:                return ESCAPE_IGNORE;
1.63      schwarze   98:
                     99:        /*
                    100:         * The \z escape is supposed to output the following
1.79      schwarze  101:         * character without advancing the cursor position.
1.63      schwarze  102:         * Since we are mostly dealing with terminal mode,
                    103:         * let us just skip the next character.
                    104:         */
1.79      schwarze  105:        case 'z':
1.94      schwarze  106:                return ESCAPE_SKIPCHAR;
1.1       kristaps  107:
1.45      kristaps  108:        /*
                    109:         * Handle all triggers matching \X(xy, \Xx, and \X[xxxx], where
                    110:         * 'X' is the trigger.  These have opaque sub-strings.
                    111:         */
1.79      schwarze  112:        case 'F':
                    113:        case 'g':
                    114:        case 'k':
                    115:        case 'M':
                    116:        case 'm':
                    117:        case 'n':
                    118:        case 'V':
                    119:        case 'Y':
1.60      schwarze  120:                gly = ESCAPE_IGNORE;
1.24      kristaps  121:                /* FALLTHROUGH */
1.79      schwarze  122:        case 'f':
1.45      kristaps  123:                if (ESCAPE_ERROR == gly)
                    124:                        gly = ESCAPE_FONT;
1.65      schwarze  125:                switch (**start) {
1.79      schwarze  126:                case '(':
1.65      schwarze  127:                        *start = ++*end;
                    128:                        *sz = 2;
1.45      kristaps  129:                        break;
1.79      schwarze  130:                case '[':
1.65      schwarze  131:                        *start = ++*end;
1.45      kristaps  132:                        term = ']';
                    133:                        break;
                    134:                default:
1.65      schwarze  135:                        *sz = 1;
1.45      kristaps  136:                        break;
                    137:                }
                    138:                break;
                    139:
                    140:        /*
                    141:         * These escapes are of the form \X'Y', where 'X' is the trigger
                    142:         * and 'Y' is any string.  These have opaque sub-strings.
1.78      schwarze  143:         * The \B and \w escapes are handled in roff.c, roff_res().
1.45      kristaps  144:         */
1.79      schwarze  145:        case 'A':
                    146:        case 'b':
                    147:        case 'D':
                    148:        case 'R':
                    149:        case 'X':
                    150:        case 'Z':
1.91      schwarze  151:                gly = ESCAPE_IGNORE;
                    152:                /* FALLTHROUGH */
                    153:        case 'o':
                    154:                if (**start == '\0')
1.94      schwarze  155:                        return ESCAPE_ERROR;
1.91      schwarze  156:                if (gly == ESCAPE_ERROR)
                    157:                        gly = ESCAPE_OVERSTRIKE;
1.77      schwarze  158:                term = **start;
1.65      schwarze  159:                *start = ++*end;
1.24      kristaps  160:                break;
1.45      kristaps  161:
                    162:        /*
                    163:         * These escapes are of the form \X'N', where 'X' is the trigger
                    164:         * and 'N' resolves to a numerical expression.
                    165:         */
1.79      schwarze  166:        case 'h':
                    167:        case 'H':
                    168:        case 'L':
                    169:        case 'l':
                    170:        case 'S':
                    171:        case 'v':
                    172:        case 'x':
1.82      schwarze  173:                if (strchr(" %&()*+-./0123456789:<=>", **start)) {
1.86      kristaps  174:                        if ('\0' != **start)
                    175:                                ++*end;
1.94      schwarze  176:                        return ESCAPE_ERROR;
1.82      schwarze  177:                }
1.73      schwarze  178:                gly = ESCAPE_IGNORE;
1.77      schwarze  179:                term = **start;
1.65      schwarze  180:                *start = ++*end;
1.45      kristaps  181:                break;
1.60      schwarze  182:
                    183:        /*
                    184:         * Special handling for the numbered character escape.
                    185:         * XXX Do any other escapes need similar handling?
                    186:         */
1.79      schwarze  187:        case 'N':
1.65      schwarze  188:                if ('\0' == **start)
1.94      schwarze  189:                        return ESCAPE_ERROR;
1.65      schwarze  190:                (*end)++;
                    191:                if (isdigit((unsigned char)**start)) {
                    192:                        *sz = 1;
1.94      schwarze  193:                        return ESCAPE_IGNORE;
1.65      schwarze  194:                }
                    195:                (*start)++;
1.60      schwarze  196:                while (isdigit((unsigned char)**end))
                    197:                        (*end)++;
1.65      schwarze  198:                *sz = *end - *start;
1.60      schwarze  199:                if ('\0' != **end)
                    200:                        (*end)++;
1.94      schwarze  201:                return ESCAPE_NUMBERED;
1.45      kristaps  202:
1.79      schwarze  203:        /*
1.45      kristaps  204:         * Sizes get a special category of their own.
                    205:         */
1.79      schwarze  206:        case 's':
1.45      kristaps  207:                gly = ESCAPE_IGNORE;
1.28      kristaps  208:
1.45      kristaps  209:                /* See +/- counts as a sign. */
1.65      schwarze  210:                if ('+' == **end || '-' == **end || ASCII_HYPH == **end)
1.90      schwarze  211:                        *start = ++*end;
1.8       kristaps  212:
1.65      schwarze  213:                switch (**end) {
1.79      schwarze  214:                case '(':
1.65      schwarze  215:                        *start = ++*end;
                    216:                        *sz = 2;
1.22      kristaps  217:                        break;
1.79      schwarze  218:                case '[':
1.65      schwarze  219:                        *start = ++*end;
1.64      schwarze  220:                        term = ']';
1.22      kristaps  221:                        break;
1.79      schwarze  222:                case '\'':
1.65      schwarze  223:                        *start = ++*end;
1.64      schwarze  224:                        term = '\'';
1.92      schwarze  225:                        break;
                    226:                case '3':
                    227:                case '2':
                    228:                case '1':
                    229:                        *sz = (*end)[-1] == 's' &&
                    230:                            isdigit((unsigned char)(*end)[1]) ? 2 : 1;
1.22      kristaps  231:                        break;
                    232:                default:
1.65      schwarze  233:                        *sz = 1;
1.22      kristaps  234:                        break;
1.8       kristaps  235:                }
                    236:
1.45      kristaps  237:                break;
1.33      kristaps  238:
1.45      kristaps  239:        /*
                    240:         * Anything else is assumed to be a glyph.
1.65      schwarze  241:         * In this case, pass back the character after the backslash.
1.45      kristaps  242:         */
                    243:        default:
                    244:                gly = ESCAPE_SPECIAL;
1.65      schwarze  245:                *start = --*end;
                    246:                *sz = 1;
1.22      kristaps  247:                break;
1.45      kristaps  248:        }
                    249:
                    250:        assert(ESCAPE_ERROR != gly);
                    251:
                    252:        /*
1.64      schwarze  253:         * Read up to the terminating character,
                    254:         * paying attention to nested escapes.
1.45      kristaps  255:         */
                    256:
                    257:        if ('\0' != term) {
1.64      schwarze  258:                while (**end != term) {
                    259:                        switch (**end) {
1.79      schwarze  260:                        case '\0':
1.94      schwarze  261:                                return ESCAPE_ERROR;
1.79      schwarze  262:                        case '\\':
1.64      schwarze  263:                                (*end)++;
                    264:                                if (ESCAPE_ERROR ==
                    265:                                    mandoc_escape(end, NULL, NULL))
1.94      schwarze  266:                                        return ESCAPE_ERROR;
1.64      schwarze  267:                                break;
                    268:                        default:
                    269:                                (*end)++;
                    270:                                break;
                    271:                        }
                    272:                }
1.65      schwarze  273:                *sz = (*end)++ - *start;
1.64      schwarze  274:        } else {
1.65      schwarze  275:                assert(*sz > 0);
                    276:                if ((size_t)*sz > strlen(*start))
1.94      schwarze  277:                        return ESCAPE_ERROR;
1.65      schwarze  278:                *end += *sz;
1.45      kristaps  279:        }
                    280:
                    281:        /* Run post-processors. */
                    282:
                    283:        switch (gly) {
1.79      schwarze  284:        case ESCAPE_FONT:
1.68      schwarze  285:                if (2 == *sz) {
                    286:                        if ('C' == **start) {
                    287:                                /*
                    288:                                 * Treat constant-width font modes
                    289:                                 * just like regular font modes.
                    290:                                 */
                    291:                                (*start)++;
                    292:                                (*sz)--;
                    293:                        } else {
                    294:                                if ('B' == (*start)[0] && 'I' == (*start)[1])
                    295:                                        gly = ESCAPE_FONTBI;
                    296:                                break;
                    297:                        }
1.65      schwarze  298:                } else if (1 != *sz)
1.45      kristaps  299:                        break;
1.61      kristaps  300:
1.65      schwarze  301:                switch (**start) {
1.79      schwarze  302:                case '3':
                    303:                case 'B':
1.45      kristaps  304:                        gly = ESCAPE_FONTBOLD;
                    305:                        break;
1.79      schwarze  306:                case '2':
                    307:                case 'I':
1.45      kristaps  308:                        gly = ESCAPE_FONTITALIC;
1.22      kristaps  309:                        break;
1.79      schwarze  310:                case 'P':
1.45      kristaps  311:                        gly = ESCAPE_FONTPREV;
1.22      kristaps  312:                        break;
1.79      schwarze  313:                case '1':
                    314:                case 'R':
1.45      kristaps  315:                        gly = ESCAPE_FONTROMAN;
1.1       kristaps  316:                        break;
                    317:                }
1.46      kristaps  318:                break;
1.79      schwarze  319:        case ESCAPE_SPECIAL:
1.65      schwarze  320:                if (1 == *sz && 'c' == **start)
1.45      kristaps  321:                        gly = ESCAPE_NOSPACE;
1.87      schwarze  322:                /*
1.88      schwarze  323:                 * Unicode escapes are defined in groff as \[u0000]
1.87      schwarze  324:                 * to \[u10FFFF], where the contained value must be
                    325:                 * a valid Unicode codepoint.  Here, however, only
1.88      schwarze  326:                 * check the length and range.
1.87      schwarze  327:                 */
1.88      schwarze  328:                if (**start != 'u' || *sz < 5 || *sz > 7)
                    329:                        break;
                    330:                if (*sz == 7 && ((*start)[1] != '1' || (*start)[2] != '0'))
                    331:                        break;
                    332:                if (*sz == 6 && (*start)[1] == '0')
1.96      schwarze  333:                        break;
                    334:                if (*sz == 5 && (*start)[1] == 'D' &&
                    335:                    strchr("89ABCDEF", (*start)[2]) != NULL)
1.88      schwarze  336:                        break;
                    337:                if ((int)strspn(*start + 1, "0123456789ABCDEFabcdef")
1.87      schwarze  338:                    + 1 == *sz)
                    339:                        gly = ESCAPE_UNICODE;
1.22      kristaps  340:                break;
1.1       kristaps  341:        default:
1.22      kristaps  342:                break;
1.1       kristaps  343:        }
                    344:
1.94      schwarze  345:        return gly;
1.36      schwarze  346: }
                    347:
                    348: /*
                    349:  * Parse a quoted or unquoted roff-style request or macro argument.
                    350:  * Return a pointer to the parsed argument, which is either the original
                    351:  * pointer or advanced by one byte in case the argument is quoted.
1.71      schwarze  352:  * NUL-terminate the argument in place.
1.36      schwarze  353:  * Collapse pairs of quotes inside quoted arguments.
                    354:  * Advance the argument pointer to the next argument,
1.71      schwarze  355:  * or to the NUL byte terminating the argument line.
1.36      schwarze  356:  */
                    357: char *
1.48      kristaps  358: mandoc_getarg(struct mparse *parse, char **cpp, int ln, int *pos)
1.36      schwarze  359: {
                    360:        char     *start, *cp;
                    361:        int       quoted, pairs, white;
                    362:
                    363:        /* Quoting can only start with a new word. */
                    364:        start = *cpp;
1.47      kristaps  365:        quoted = 0;
1.36      schwarze  366:        if ('"' == *start) {
                    367:                quoted = 1;
                    368:                start++;
1.79      schwarze  369:        }
1.36      schwarze  370:
                    371:        pairs = 0;
                    372:        white = 0;
                    373:        for (cp = start; '\0' != *cp; cp++) {
1.67      schwarze  374:
                    375:                /*
                    376:                 * Move the following text left
                    377:                 * after quoted quotes and after "\\" and "\t".
                    378:                 */
1.36      schwarze  379:                if (pairs)
                    380:                        cp[-pairs] = cp[0];
1.67      schwarze  381:
1.36      schwarze  382:                if ('\\' == cp[0]) {
1.67      schwarze  383:                        /*
                    384:                         * In copy mode, translate double to single
                    385:                         * backslashes and backslash-t to literal tabs.
                    386:                         */
                    387:                        switch (cp[1]) {
1.79      schwarze  388:                        case 't':
1.67      schwarze  389:                                cp[0] = '\t';
                    390:                                /* FALLTHROUGH */
1.79      schwarze  391:                        case '\\':
1.36      schwarze  392:                                pairs++;
                    393:                                cp++;
1.67      schwarze  394:                                break;
1.79      schwarze  395:                        case ' ':
1.36      schwarze  396:                                /* Skip escaped blanks. */
1.67      schwarze  397:                                if (0 == quoted)
                    398:                                        cp++;
                    399:                                break;
                    400:                        default:
                    401:                                break;
                    402:                        }
1.36      schwarze  403:                } else if (0 == quoted) {
                    404:                        if (' ' == cp[0]) {
                    405:                                /* Unescaped blanks end unquoted args. */
                    406:                                white = 1;
                    407:                                break;
                    408:                        }
                    409:                } else if ('"' == cp[0]) {
                    410:                        if ('"' == cp[1]) {
                    411:                                /* Quoted quotes collapse. */
                    412:                                pairs++;
                    413:                                cp++;
                    414:                        } else {
                    415:                                /* Unquoted quotes end quoted args. */
                    416:                                quoted = 2;
                    417:                                break;
                    418:                        }
                    419:                }
                    420:        }
                    421:
                    422:        /* Quoted argument without a closing quote. */
1.48      kristaps  423:        if (1 == quoted)
1.83      schwarze  424:                mandoc_msg(MANDOCERR_ARG_QUOTE, parse, ln, *pos, NULL);
1.36      schwarze  425:
1.71      schwarze  426:        /* NUL-terminate this argument and move to the next one. */
1.36      schwarze  427:        if (pairs)
                    428:                cp[-pairs] = '\0';
                    429:        if ('\0' != *cp) {
                    430:                *cp++ = '\0';
                    431:                while (' ' == *cp)
                    432:                        cp++;
                    433:        }
1.39      kristaps  434:        *pos += (int)(cp - start) + (quoted ? 1 : 0);
1.36      schwarze  435:        *cpp = cp;
                    436:
1.48      kristaps  437:        if ('\0' == *cp && (white || ' ' == cp[-1]))
1.83      schwarze  438:                mandoc_msg(MANDOCERR_SPACE_EOL, parse, ln, *pos, NULL);
1.36      schwarze  439:
1.94      schwarze  440:        return start;
1.4       kristaps  441: }
1.7       kristaps  442:
                    443: static int
                    444: a2time(time_t *t, const char *fmt, const char *p)
                    445: {
                    446:        struct tm        tm;
                    447:        char            *pp;
                    448:
                    449:        memset(&tm, 0, sizeof(struct tm));
                    450:
1.56      kristaps  451:        pp = NULL;
1.85      schwarze  452: #if HAVE_STRPTIME
1.7       kristaps  453:        pp = strptime(p, fmt, &tm);
1.56      kristaps  454: #endif
1.7       kristaps  455:        if (NULL != pp && '\0' == *pp) {
                    456:                *t = mktime(&tm);
1.94      schwarze  457:                return 1;
1.7       kristaps  458:        }
                    459:
1.94      schwarze  460:        return 0;
1.7       kristaps  461: }
                    462:
1.37      schwarze  463: static char *
                    464: time2a(time_t t)
                    465: {
1.56      kristaps  466:        struct tm       *tm;
1.38      schwarze  467:        char            *buf, *p;
                    468:        size_t           ssz;
1.37      schwarze  469:        int              isz;
                    470:
1.56      kristaps  471:        tm = localtime(&t);
1.89      schwarze  472:        if (tm == NULL)
1.94      schwarze  473:                return NULL;
1.37      schwarze  474:
1.38      schwarze  475:        /*
                    476:         * Reserve space:
                    477:         * up to 9 characters for the month (September) + blank
                    478:         * up to 2 characters for the day + comma + blank
                    479:         * 4 characters for the year and a terminating '\0'
                    480:         */
                    481:        p = buf = mandoc_malloc(10 + 4 + 4 + 1);
                    482:
1.56      kristaps  483:        if (0 == (ssz = strftime(p, 10 + 1, "%B ", tm)))
1.38      schwarze  484:                goto fail;
                    485:        p += (int)ssz;
1.37      schwarze  486:
1.56      kristaps  487:        if (-1 == (isz = snprintf(p, 4 + 1, "%d, ", tm->tm_mday)))
1.38      schwarze  488:                goto fail;
1.37      schwarze  489:        p += isz;
                    490:
1.56      kristaps  491:        if (0 == strftime(p, 4 + 1, "%Y", tm))
1.38      schwarze  492:                goto fail;
1.94      schwarze  493:        return buf;
1.38      schwarze  494:
                    495: fail:
                    496:        free(buf);
1.94      schwarze  497:        return NULL;
1.37      schwarze  498: }
                    499:
                    500: char *
1.42      kristaps  501: mandoc_normdate(struct mparse *parse, char *in, int ln, int pos)
1.7       kristaps  502: {
1.37      schwarze  503:        char            *out;
1.7       kristaps  504:        time_t           t;
                    505:
1.37      schwarze  506:        if (NULL == in || '\0' == *in ||
                    507:            0 == strcmp(in, "$" "Mdocdate$")) {
1.80      schwarze  508:                mandoc_msg(MANDOCERR_DATE_MISSING, parse, ln, pos, NULL);
1.37      schwarze  509:                time(&t);
                    510:        }
1.62      schwarze  511:        else if (a2time(&t, "%Y-%m-%d", in))
                    512:                t = 0;
1.37      schwarze  513:        else if (!a2time(&t, "$" "Mdocdate: %b %d %Y $", in) &&
1.62      schwarze  514:            !a2time(&t, "%b %d, %Y", in)) {
1.81      schwarze  515:                mandoc_msg(MANDOCERR_DATE_BAD, parse, ln, pos, in);
1.37      schwarze  516:                t = 0;
1.7       kristaps  517:        }
1.37      schwarze  518:        out = t ? time2a(t) : NULL;
1.94      schwarze  519:        return out ? out : mandoc_strdup(in);
1.7       kristaps  520: }
                    521:
1.12      kristaps  522: int
1.75      schwarze  523: mandoc_eos(const char *p, size_t sz)
1.12      kristaps  524: {
1.75      schwarze  525:        const char      *q;
                    526:        int              enclosed, found;
1.12      kristaps  527:
1.13      kristaps  528:        if (0 == sz)
1.94      schwarze  529:                return 0;
1.12      kristaps  530:
1.14      kristaps  531:        /*
                    532:         * End-of-sentence recognition must include situations where
                    533:         * some symbols, such as `)', allow prior EOS punctuation to
1.49      kristaps  534:         * propagate outward.
1.14      kristaps  535:         */
                    536:
1.75      schwarze  537:        enclosed = found = 0;
1.25      kristaps  538:        for (q = p + (int)sz - 1; q >= p; q--) {
1.23      schwarze  539:                switch (*q) {
1.79      schwarze  540:                case '\"':
                    541:                case '\'':
                    542:                case ']':
                    543:                case ')':
1.23      schwarze  544:                        if (0 == found)
                    545:                                enclosed = 1;
1.14      kristaps  546:                        break;
1.79      schwarze  547:                case '.':
                    548:                case '!':
                    549:                case '?':
1.23      schwarze  550:                        found = 1;
                    551:                        break;
1.14      kristaps  552:                default:
1.94      schwarze  553:                        return found &&
                    554:                            (!enclosed || isalnum((unsigned char)*q));
1.14      kristaps  555:                }
1.12      kristaps  556:        }
                    557:
1.94      schwarze  558:        return found && !enclosed;
1.44      kristaps  559: }
1.50      kristaps  560:
                    561: /*
                    562:  * Convert a string to a long that may not be <0.
                    563:  * If the string is invalid, or is less than 0, return -1.
                    564:  */
                    565: int
1.54      kristaps  566: mandoc_strntoi(const char *p, size_t sz, int base)
1.50      kristaps  567: {
                    568:        char             buf[32];
                    569:        char            *ep;
                    570:        long             v;
                    571:
                    572:        if (sz > 31)
1.94      schwarze  573:                return -1;
1.50      kristaps  574:
                    575:        memcpy(buf, p, sz);
1.51      kristaps  576:        buf[(int)sz] = '\0';
1.50      kristaps  577:
                    578:        errno = 0;
                    579:        v = strtol(buf, &ep, base);
                    580:
                    581:        if (buf[0] == '\0' || *ep != '\0')
1.94      schwarze  582:                return -1;
1.50      kristaps  583:
1.54      kristaps  584:        if (v > INT_MAX)
                    585:                v = INT_MAX;
                    586:        if (v < INT_MIN)
                    587:                v = INT_MIN;
1.50      kristaps  588:
1.94      schwarze  589:        return (int)v;
1.50      kristaps  590: }

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