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Annotation of mandoc/mandoc.c, Revision 1.103

1.103   ! schwarze    1: /*     $Id: mandoc.c,v 1.102 2017/06/14 01:31:26 schwarze Exp $ */
1.1       kristaps    2: /*
1.90      schwarze    3:  * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.100     schwarze    4:  * Copyright (c) 2011-2015, 2017 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;
                     44:        int              local_sz;
                     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:
1.65      schwarze  333:                if (1 == *sz && 'c' == **start)
1.45      kristaps  334:                        gly = ESCAPE_NOSPACE;
1.87      schwarze  335:                /*
1.88      schwarze  336:                 * Unicode escapes are defined in groff as \[u0000]
1.87      schwarze  337:                 * to \[u10FFFF], where the contained value must be
                    338:                 * a valid Unicode codepoint.  Here, however, only
1.88      schwarze  339:                 * check the length and range.
1.87      schwarze  340:                 */
1.88      schwarze  341:                if (**start != 'u' || *sz < 5 || *sz > 7)
                    342:                        break;
                    343:                if (*sz == 7 && ((*start)[1] != '1' || (*start)[2] != '0'))
                    344:                        break;
                    345:                if (*sz == 6 && (*start)[1] == '0')
1.96      schwarze  346:                        break;
                    347:                if (*sz == 5 && (*start)[1] == 'D' &&
                    348:                    strchr("89ABCDEF", (*start)[2]) != NULL)
1.88      schwarze  349:                        break;
                    350:                if ((int)strspn(*start + 1, "0123456789ABCDEFabcdef")
1.87      schwarze  351:                    + 1 == *sz)
                    352:                        gly = ESCAPE_UNICODE;
1.22      kristaps  353:                break;
1.1       kristaps  354:        default:
1.22      kristaps  355:                break;
1.1       kristaps  356:        }
                    357:
1.94      schwarze  358:        return gly;
1.36      schwarze  359: }
                    360:
                    361: /*
                    362:  * Parse a quoted or unquoted roff-style request or macro argument.
                    363:  * Return a pointer to the parsed argument, which is either the original
                    364:  * pointer or advanced by one byte in case the argument is quoted.
1.71      schwarze  365:  * NUL-terminate the argument in place.
1.36      schwarze  366:  * Collapse pairs of quotes inside quoted arguments.
                    367:  * Advance the argument pointer to the next argument,
1.71      schwarze  368:  * or to the NUL byte terminating the argument line.
1.36      schwarze  369:  */
                    370: char *
1.48      kristaps  371: mandoc_getarg(struct mparse *parse, char **cpp, int ln, int *pos)
1.36      schwarze  372: {
                    373:        char     *start, *cp;
                    374:        int       quoted, pairs, white;
                    375:
                    376:        /* Quoting can only start with a new word. */
                    377:        start = *cpp;
1.47      kristaps  378:        quoted = 0;
1.36      schwarze  379:        if ('"' == *start) {
                    380:                quoted = 1;
                    381:                start++;
1.79      schwarze  382:        }
1.36      schwarze  383:
                    384:        pairs = 0;
                    385:        white = 0;
                    386:        for (cp = start; '\0' != *cp; cp++) {
1.67      schwarze  387:
                    388:                /*
                    389:                 * Move the following text left
                    390:                 * after quoted quotes and after "\\" and "\t".
                    391:                 */
1.36      schwarze  392:                if (pairs)
                    393:                        cp[-pairs] = cp[0];
1.67      schwarze  394:
1.36      schwarze  395:                if ('\\' == cp[0]) {
1.67      schwarze  396:                        /*
                    397:                         * In copy mode, translate double to single
                    398:                         * backslashes and backslash-t to literal tabs.
                    399:                         */
                    400:                        switch (cp[1]) {
1.79      schwarze  401:                        case 't':
1.67      schwarze  402:                                cp[0] = '\t';
                    403:                                /* FALLTHROUGH */
1.79      schwarze  404:                        case '\\':
1.36      schwarze  405:                                pairs++;
                    406:                                cp++;
1.67      schwarze  407:                                break;
1.79      schwarze  408:                        case ' ':
1.36      schwarze  409:                                /* Skip escaped blanks. */
1.67      schwarze  410:                                if (0 == quoted)
                    411:                                        cp++;
                    412:                                break;
                    413:                        default:
                    414:                                break;
                    415:                        }
1.36      schwarze  416:                } else if (0 == quoted) {
                    417:                        if (' ' == cp[0]) {
                    418:                                /* Unescaped blanks end unquoted args. */
                    419:                                white = 1;
                    420:                                break;
                    421:                        }
                    422:                } else if ('"' == cp[0]) {
                    423:                        if ('"' == cp[1]) {
                    424:                                /* Quoted quotes collapse. */
                    425:                                pairs++;
                    426:                                cp++;
                    427:                        } else {
                    428:                                /* Unquoted quotes end quoted args. */
                    429:                                quoted = 2;
                    430:                                break;
                    431:                        }
                    432:                }
                    433:        }
                    434:
                    435:        /* Quoted argument without a closing quote. */
1.48      kristaps  436:        if (1 == quoted)
1.83      schwarze  437:                mandoc_msg(MANDOCERR_ARG_QUOTE, parse, ln, *pos, NULL);
1.36      schwarze  438:
1.71      schwarze  439:        /* NUL-terminate this argument and move to the next one. */
1.36      schwarze  440:        if (pairs)
                    441:                cp[-pairs] = '\0';
                    442:        if ('\0' != *cp) {
                    443:                *cp++ = '\0';
                    444:                while (' ' == *cp)
                    445:                        cp++;
                    446:        }
1.39      kristaps  447:        *pos += (int)(cp - start) + (quoted ? 1 : 0);
1.36      schwarze  448:        *cpp = cp;
                    449:
1.48      kristaps  450:        if ('\0' == *cp && (white || ' ' == cp[-1]))
1.83      schwarze  451:                mandoc_msg(MANDOCERR_SPACE_EOL, parse, ln, *pos, NULL);
1.36      schwarze  452:
1.94      schwarze  453:        return start;
1.4       kristaps  454: }
1.7       kristaps  455:
                    456: static int
                    457: a2time(time_t *t, const char *fmt, const char *p)
                    458: {
                    459:        struct tm        tm;
                    460:        char            *pp;
                    461:
                    462:        memset(&tm, 0, sizeof(struct tm));
                    463:
1.56      kristaps  464:        pp = NULL;
1.85      schwarze  465: #if HAVE_STRPTIME
1.7       kristaps  466:        pp = strptime(p, fmt, &tm);
1.56      kristaps  467: #endif
1.7       kristaps  468:        if (NULL != pp && '\0' == *pp) {
                    469:                *t = mktime(&tm);
1.94      schwarze  470:                return 1;
1.7       kristaps  471:        }
                    472:
1.94      schwarze  473:        return 0;
1.7       kristaps  474: }
                    475:
1.37      schwarze  476: static char *
                    477: time2a(time_t t)
                    478: {
1.56      kristaps  479:        struct tm       *tm;
1.38      schwarze  480:        char            *buf, *p;
                    481:        size_t           ssz;
1.37      schwarze  482:        int              isz;
                    483:
1.56      kristaps  484:        tm = localtime(&t);
1.89      schwarze  485:        if (tm == NULL)
1.94      schwarze  486:                return NULL;
1.37      schwarze  487:
1.38      schwarze  488:        /*
                    489:         * Reserve space:
                    490:         * up to 9 characters for the month (September) + blank
                    491:         * up to 2 characters for the day + comma + blank
                    492:         * 4 characters for the year and a terminating '\0'
                    493:         */
1.98      schwarze  494:
1.38      schwarze  495:        p = buf = mandoc_malloc(10 + 4 + 4 + 1);
                    496:
1.98      schwarze  497:        if ((ssz = strftime(p, 10 + 1, "%B ", tm)) == 0)
1.38      schwarze  498:                goto fail;
                    499:        p += (int)ssz;
1.37      schwarze  500:
1.98      schwarze  501:        /*
                    502:         * The output format is just "%d" here, not "%2d" or "%02d".
                    503:         * That's also the reason why we can't just format the
                    504:         * date as a whole with "%B %e, %Y" or "%B %d, %Y".
                    505:         * Besides, the present approach is less prone to buffer
                    506:         * overflows, in case anybody should ever introduce the bug
                    507:         * of looking at LC_TIME.
                    508:         */
                    509:
                    510:        if ((isz = snprintf(p, 4 + 1, "%d, ", tm->tm_mday)) == -1)
1.38      schwarze  511:                goto fail;
1.37      schwarze  512:        p += isz;
                    513:
1.98      schwarze  514:        if (strftime(p, 4 + 1, "%Y", tm) == 0)
1.38      schwarze  515:                goto fail;
1.94      schwarze  516:        return buf;
1.38      schwarze  517:
                    518: fail:
                    519:        free(buf);
1.94      schwarze  520:        return NULL;
1.37      schwarze  521: }
                    522:
                    523: char *
1.101     schwarze  524: mandoc_normdate(struct roff_man *man, char *in, int ln, int pos)
1.7       kristaps  525: {
1.103   ! schwarze  526:        char            *cp;
1.7       kristaps  527:        time_t           t;
                    528:
1.98      schwarze  529:        /* No date specified: use today's date. */
                    530:
                    531:        if (in == NULL || *in == '\0' || strcmp(in, "$" "Mdocdate$") == 0) {
1.101     schwarze  532:                mandoc_msg(MANDOCERR_DATE_MISSING, man->parse, ln, pos, NULL);
1.98      schwarze  533:                return time2a(time(NULL));
1.37      schwarze  534:        }
1.98      schwarze  535:
                    536:        /* Valid mdoc(7) date format. */
                    537:
                    538:        if (a2time(&t, "$" "Mdocdate: %b %d %Y $", in) ||
1.103   ! schwarze  539:            a2time(&t, "%b %d, %Y", in)) {
        !           540:                cp = time2a(t);
        !           541:                if (t > time(NULL) + 86400)
        !           542:                        mandoc_msg(MANDOCERR_DATE_FUTURE, man->parse,
        !           543:                            ln, pos, cp);
        !           544:                return cp;
        !           545:        }
1.98      schwarze  546:
1.101     schwarze  547:        /* In man(7), do not warn about the legacy format. */
1.98      schwarze  548:
1.101     schwarze  549:        if (a2time(&t, "%Y-%m-%d", in) == 0)
                    550:                mandoc_msg(MANDOCERR_DATE_BAD, man->parse, ln, pos, in);
1.103   ! schwarze  551:        else if (t > time(NULL) + 86400)
        !           552:                mandoc_msg(MANDOCERR_DATE_FUTURE, man->parse, ln, pos, in);
1.101     schwarze  553:        else if (man->macroset == MACROSET_MDOC)
                    554:                mandoc_vmsg(MANDOCERR_DATE_LEGACY, man->parse,
                    555:                    ln, pos, "Dd %s", in);
1.98      schwarze  556:
                    557:        /* Use any non-mdoc(7) date verbatim. */
                    558:
                    559:        return mandoc_strdup(in);
1.7       kristaps  560: }
                    561:
1.12      kristaps  562: int
1.75      schwarze  563: mandoc_eos(const char *p, size_t sz)
1.12      kristaps  564: {
1.75      schwarze  565:        const char      *q;
                    566:        int              enclosed, found;
1.12      kristaps  567:
1.13      kristaps  568:        if (0 == sz)
1.94      schwarze  569:                return 0;
1.12      kristaps  570:
1.14      kristaps  571:        /*
                    572:         * End-of-sentence recognition must include situations where
                    573:         * some symbols, such as `)', allow prior EOS punctuation to
1.49      kristaps  574:         * propagate outward.
1.14      kristaps  575:         */
                    576:
1.75      schwarze  577:        enclosed = found = 0;
1.25      kristaps  578:        for (q = p + (int)sz - 1; q >= p; q--) {
1.23      schwarze  579:                switch (*q) {
1.79      schwarze  580:                case '\"':
                    581:                case '\'':
                    582:                case ']':
                    583:                case ')':
1.23      schwarze  584:                        if (0 == found)
                    585:                                enclosed = 1;
1.14      kristaps  586:                        break;
1.79      schwarze  587:                case '.':
                    588:                case '!':
                    589:                case '?':
1.23      schwarze  590:                        found = 1;
                    591:                        break;
1.14      kristaps  592:                default:
1.94      schwarze  593:                        return found &&
                    594:                            (!enclosed || isalnum((unsigned char)*q));
1.14      kristaps  595:                }
1.12      kristaps  596:        }
                    597:
1.94      schwarze  598:        return found && !enclosed;
1.44      kristaps  599: }
1.50      kristaps  600:
                    601: /*
                    602:  * Convert a string to a long that may not be <0.
                    603:  * If the string is invalid, or is less than 0, return -1.
                    604:  */
                    605: int
1.54      kristaps  606: mandoc_strntoi(const char *p, size_t sz, int base)
1.50      kristaps  607: {
                    608:        char             buf[32];
                    609:        char            *ep;
                    610:        long             v;
                    611:
                    612:        if (sz > 31)
1.94      schwarze  613:                return -1;
1.50      kristaps  614:
                    615:        memcpy(buf, p, sz);
1.51      kristaps  616:        buf[(int)sz] = '\0';
1.50      kristaps  617:
                    618:        errno = 0;
                    619:        v = strtol(buf, &ep, base);
                    620:
                    621:        if (buf[0] == '\0' || *ep != '\0')
1.94      schwarze  622:                return -1;
1.50      kristaps  623:
1.54      kristaps  624:        if (v > INT_MAX)
                    625:                v = INT_MAX;
                    626:        if (v < INT_MIN)
                    627:                v = INT_MIN;
1.50      kristaps  628:
1.94      schwarze  629:        return (int)v;
1.50      kristaps  630: }

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