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Annotation of mandoc/man.c, Revision 1.49

1.49    ! kristaps    1: /*     $Id: man.c,v 1.48 2010/01/07 10:05:24 kristaps Exp $ */
1.1       kristaps    2: /*
1.19      kristaps    3:  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
1.1       kristaps    4:  *
                      5:  * Permission to use, copy, modify, and distribute this software for any
1.18      kristaps    6:  * purpose with or without fee is hereby granted, provided that the above
                      7:  * copyright notice and this permission notice appear in all copies.
1.1       kristaps    8:  *
1.18      kristaps    9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1       kristaps   16:  */
1.47      kristaps   17: #ifdef HAVE_CONFIG_H
                     18: #include "config.h"
                     19: #endif
                     20:
1.41      kristaps   21: #include <sys/types.h>
                     22:
1.1       kristaps   23: #include <assert.h>
                     24: #include <ctype.h>
                     25: #include <stdarg.h>
                     26: #include <stdlib.h>
                     27: #include <stdio.h>
                     28: #include <string.h>
                     29:
                     30: #include "libman.h"
1.45      kristaps   31: #include "libmandoc.h"
1.1       kristaps   32:
1.27      kristaps   33: const  char *const __man_merrnames[WERRMAX] = {
                     34:        "invalid character", /* WNPRINT */
                     35:        "invalid manual section", /* WMSEC */
                     36:        "invalid date format", /* WDATE */
                     37:        "scope of prior line violated", /* WLNSCOPE */
                     38:        "trailing whitespace", /* WTSPACE */
                     39:        "unterminated quoted parameter", /* WTQUOTE */
                     40:        "document has no body", /* WNODATA */
                     41:        "document has no title/section", /* WNOTITLE */
                     42:        "invalid escape sequence", /* WESCAPE */
1.28      kristaps   43:        "invalid number format", /* WNUMFMT */
1.29      kristaps   44:        "expected block head arguments", /* WHEADARGS */
                     45:        "expected block body arguments", /* WBODYARGS */
                     46:        "expected empty block head", /* WNHEADARGS */
                     47:        "ill-formed macro", /* WMACROFORM */
1.30      kristaps   48:        "scope open on exit", /* WEXITSCOPE */
1.35      kristaps   49:        "no scope context", /* WNOSCOPE */
                     50:        "literal context already open", /* WOLITERAL */
                     51:        "no literal context open" /* WNLITERAL */
1.27      kristaps   52: };
                     53:
1.1       kristaps   54: const  char *const __man_macronames[MAN_MAX] = {
1.21      kristaps   55:        "br",           "TH",           "SH",           "SS",
1.1       kristaps   56:        "TP",           "LP",           "PP",           "P",
                     57:        "IP",           "HP",           "SM",           "SB",
                     58:        "BI",           "IB",           "BR",           "RB",
1.11      kristaps   59:        "R",            "B",            "I",            "IR",
1.29      kristaps   60:        "RI",           "na",           "i",            "sp",
1.30      kristaps   61:        "nf",           "fi",           "r",            "RE",
1.42      kristaps   62:        "RS",           "DT",           "UC",           "PD"
1.1       kristaps   63:        };
                     64:
                     65: const  char * const *man_macronames = __man_macronames;
                     66:
1.16      kristaps   67: static struct man_node *man_node_alloc(int, int,
                     68:                                enum man_type, int);
1.1       kristaps   69: static int              man_node_append(struct man *,
                     70:                                struct man_node *);
                     71: static int              man_ptext(struct man *, int, char *);
                     72: static int              man_pmacro(struct man *, int, char *);
1.2       kristaps   73: static void             man_free1(struct man *);
1.45      kristaps   74: static void             man_alloc1(struct man *);
1.31      kristaps   75: static int              pstring(struct man *, int, int,
                     76:                                const char *, size_t);
1.43      kristaps   77: static int              macrowarn(struct man *, int, const char *);
1.1       kristaps   78:
                     79:
                     80: const struct man_node *
1.2       kristaps   81: man_node(const struct man *m)
1.1       kristaps   82: {
                     83:
1.2       kristaps   84:        return(MAN_HALT & m->flags ? NULL : m->first);
1.1       kristaps   85: }
                     86:
                     87:
                     88: const struct man_meta *
1.2       kristaps   89: man_meta(const struct man *m)
1.1       kristaps   90: {
                     91:
1.2       kristaps   92:        return(MAN_HALT & m->flags ? NULL : &m->meta);
1.1       kristaps   93: }
                     94:
                     95:
1.45      kristaps   96: void
1.1       kristaps   97: man_reset(struct man *man)
                     98: {
                     99:
1.2       kristaps  100:        man_free1(man);
1.45      kristaps  101:        man_alloc1(man);
1.1       kristaps  102: }
                    103:
                    104:
                    105: void
                    106: man_free(struct man *man)
                    107: {
                    108:
1.2       kristaps  109:        man_free1(man);
1.1       kristaps  110:        free(man);
                    111: }
                    112:
                    113:
                    114: struct man *
1.7       kristaps  115: man_alloc(void *data, int pflags, const struct man_cb *cb)
1.1       kristaps  116: {
                    117:        struct man      *p;
                    118:
1.45      kristaps  119:        p = mandoc_calloc(1, sizeof(struct man));
1.2       kristaps  120:
1.45      kristaps  121:        if (cb)
                    122:                memcpy(&p->cb, cb, sizeof(struct man_cb));
1.1       kristaps  123:
1.40      kristaps  124:        man_hash_init();
1.4       kristaps  125:        p->data = data;
1.7       kristaps  126:        p->pflags = pflags;
1.45      kristaps  127:
                    128:        man_alloc1(p);
1.1       kristaps  129:        return(p);
                    130: }
                    131:
                    132:
                    133: int
                    134: man_endparse(struct man *m)
                    135: {
                    136:
1.3       kristaps  137:        if (MAN_HALT & m->flags)
                    138:                return(0);
                    139:        else if (man_macroend(m))
                    140:                return(1);
                    141:        m->flags |= MAN_HALT;
                    142:        return(0);
1.1       kristaps  143: }
                    144:
                    145:
                    146: int
                    147: man_parseln(struct man *m, int ln, char *buf)
                    148: {
                    149:
                    150:        return('.' == *buf ?
                    151:                        man_pmacro(m, ln, buf) :
                    152:                        man_ptext(m, ln, buf));
                    153: }
                    154:
                    155:
1.2       kristaps  156: static void
                    157: man_free1(struct man *man)
                    158: {
                    159:
                    160:        if (man->first)
                    161:                man_node_freelist(man->first);
                    162:        if (man->meta.title)
                    163:                free(man->meta.title);
1.6       kristaps  164:        if (man->meta.source)
                    165:                free(man->meta.source);
1.2       kristaps  166:        if (man->meta.vol)
                    167:                free(man->meta.vol);
                    168: }
                    169:
                    170:
1.45      kristaps  171: static void
1.2       kristaps  172: man_alloc1(struct man *m)
                    173: {
                    174:
1.44      kristaps  175:        memset(&m->meta, 0, sizeof(struct man_meta));
1.2       kristaps  176:        m->flags = 0;
1.45      kristaps  177:        m->last = mandoc_calloc(1, sizeof(struct man_node));
1.2       kristaps  178:        m->first = m->last;
                    179:        m->last->type = MAN_ROOT;
                    180:        m->next = MAN_NEXT_CHILD;
                    181: }
                    182:
                    183:
1.1       kristaps  184: static int
                    185: man_node_append(struct man *man, struct man_node *p)
                    186: {
                    187:
                    188:        assert(man->last);
                    189:        assert(man->first);
                    190:        assert(MAN_ROOT != p->type);
                    191:
                    192:        switch (man->next) {
                    193:        case (MAN_NEXT_SIBLING):
                    194:                man->last->next = p;
                    195:                p->prev = man->last;
                    196:                p->parent = man->last->parent;
                    197:                break;
                    198:        case (MAN_NEXT_CHILD):
                    199:                man->last->child = p;
                    200:                p->parent = man->last;
                    201:                break;
                    202:        default:
                    203:                abort();
                    204:                /* NOTREACHED */
                    205:        }
1.22      kristaps  206:
                    207:        p->parent->nchild++;
1.1       kristaps  208:
1.29      kristaps  209:        if ( ! man_valid_pre(man, p))
                    210:                return(0);
                    211:
                    212:        switch (p->type) {
                    213:        case (MAN_HEAD):
                    214:                assert(MAN_BLOCK == p->parent->type);
                    215:                p->parent->head = p;
                    216:                break;
                    217:        case (MAN_BODY):
                    218:                assert(MAN_BLOCK == p->parent->type);
                    219:                p->parent->body = p;
                    220:                break;
                    221:        default:
                    222:                break;
                    223:        }
                    224:
1.2       kristaps  225:        man->last = p;
                    226:
1.1       kristaps  227:        switch (p->type) {
1.2       kristaps  228:        case (MAN_TEXT):
                    229:                if ( ! man_valid_post(man))
                    230:                        return(0);
                    231:                if ( ! man_action_post(man))
                    232:                        return(0);
1.1       kristaps  233:                break;
                    234:        default:
                    235:                break;
                    236:        }
                    237:
                    238:        return(1);
                    239: }
                    240:
                    241:
                    242: static struct man_node *
1.16      kristaps  243: man_node_alloc(int line, int pos, enum man_type type, int tok)
1.1       kristaps  244: {
                    245:        struct man_node *p;
                    246:
1.45      kristaps  247:        p = mandoc_calloc(1, sizeof(struct man_node));
1.1       kristaps  248:        p->line = line;
                    249:        p->pos = pos;
                    250:        p->type = type;
1.16      kristaps  251:        p->tok = tok;
1.1       kristaps  252:        return(p);
                    253: }
                    254:
                    255:
                    256: int
1.30      kristaps  257: man_elem_alloc(struct man *m, int line, int pos, int tok)
1.1       kristaps  258: {
                    259:        struct man_node *p;
                    260:
1.16      kristaps  261:        p = man_node_alloc(line, pos, MAN_ELEM, tok);
1.30      kristaps  262:        if ( ! man_node_append(m, p))
                    263:                return(0);
                    264:        m->next = MAN_NEXT_CHILD;
                    265:        return(1);
1.1       kristaps  266: }
                    267:
                    268:
                    269: int
1.29      kristaps  270: man_head_alloc(struct man *m, int line, int pos, int tok)
                    271: {
                    272:        struct man_node *p;
                    273:
                    274:        p = man_node_alloc(line, pos, MAN_HEAD, tok);
                    275:        if ( ! man_node_append(m, p))
                    276:                return(0);
                    277:        m->next = MAN_NEXT_CHILD;
                    278:        return(1);
                    279: }
                    280:
                    281:
                    282: int
                    283: man_body_alloc(struct man *m, int line, int pos, int tok)
                    284: {
                    285:        struct man_node *p;
                    286:
                    287:        p = man_node_alloc(line, pos, MAN_BODY, tok);
                    288:        if ( ! man_node_append(m, p))
                    289:                return(0);
                    290:        m->next = MAN_NEXT_CHILD;
                    291:        return(1);
                    292: }
                    293:
                    294:
                    295: int
                    296: man_block_alloc(struct man *m, int line, int pos, int tok)
                    297: {
                    298:        struct man_node *p;
                    299:
                    300:        p = man_node_alloc(line, pos, MAN_BLOCK, tok);
                    301:        if ( ! man_node_append(m, p))
                    302:                return(0);
                    303:        m->next = MAN_NEXT_CHILD;
                    304:        return(1);
                    305: }
                    306:
                    307:
1.31      kristaps  308: static int
                    309: pstring(struct man *m, int line, int pos,
                    310:                const char *p, size_t len)
1.1       kristaps  311: {
1.31      kristaps  312:        struct man_node *n;
                    313:        size_t           sv;
1.1       kristaps  314:
1.31      kristaps  315:        n = man_node_alloc(line, pos, MAN_TEXT, -1);
1.45      kristaps  316:        n->string = mandoc_malloc(len + 1);
1.31      kristaps  317:        sv = strlcpy(n->string, p, len + 1);
                    318:
                    319:        /* Prohibit truncation. */
                    320:        assert(sv < len + 1);
                    321:
                    322:        if ( ! man_node_append(m, n))
1.30      kristaps  323:                return(0);
                    324:        m->next = MAN_NEXT_SIBLING;
                    325:        return(1);
1.1       kristaps  326: }
                    327:
                    328:
1.31      kristaps  329: int
                    330: man_word_alloc(struct man *m, int line, int pos, const char *word)
                    331: {
                    332:
                    333:        return(pstring(m, line, pos, word, strlen(word)));
                    334: }
                    335:
                    336:
1.1       kristaps  337: void
                    338: man_node_free(struct man_node *p)
                    339: {
                    340:
                    341:        if (p->string)
                    342:                free(p->string);
1.24      kristaps  343:        if (p->parent)
                    344:                p->parent->nchild--;
1.1       kristaps  345:        free(p);
                    346: }
                    347:
                    348:
                    349: void
                    350: man_node_freelist(struct man_node *p)
                    351: {
1.37      kristaps  352:        struct man_node *n;
1.1       kristaps  353:
                    354:        if (p->child)
                    355:                man_node_freelist(p->child);
1.24      kristaps  356:        assert(0 == p->nchild);
1.37      kristaps  357:        n = p->next;
1.1       kristaps  358:        man_node_free(p);
1.37      kristaps  359:        if (n)
                    360:                man_node_freelist(n);
1.1       kristaps  361: }
                    362:
                    363:
                    364: static int
                    365: man_ptext(struct man *m, int line, char *buf)
                    366: {
1.31      kristaps  367:        int              i, j;
1.49    ! kristaps  368:        char             sv;
1.31      kristaps  369:
1.35      kristaps  370:        /* Literal free-form text whitespace is preserved. */
                    371:
                    372:        if (MAN_LITERAL & m->flags) {
                    373:                if ( ! man_word_alloc(m, line, 0, buf))
                    374:                        return(0);
                    375:                goto descope;
                    376:        }
                    377:
1.31      kristaps  378:        /* First de-chunk and allocate words. */
                    379:
                    380:        for (i = 0; ' ' == buf[i]; i++)
                    381:                /* Skip leading whitespace. */ ;
1.48      kristaps  382:
1.49    ! kristaps  383:        if ('\0' == buf[i]) {
        !           384:                /* Trailing whitespace? */
        !           385:                if (i && ' ' == buf[i - 1])
        !           386:                        if ( ! man_pwarn(m, line, i - 1, WTSPACE))
        !           387:                                return(0);
1.31      kristaps  388:                if ( ! pstring(m, line, 0, &buf[i], 0))
                    389:                        return(0);
                    390:                goto descope;
                    391:        }
                    392:
                    393:        for (j = i; buf[i]; i++) {
                    394:                if (' ' != buf[i])
                    395:                        continue;
                    396:
                    397:                /* Escaped whitespace. */
                    398:                if (i && ' ' == buf[i] && '\\' == buf[i - 1])
                    399:                        continue;
1.1       kristaps  400:
1.49    ! kristaps  401:                sv = buf[i];
        !           402:                buf[i++] = '\0';
        !           403:
1.31      kristaps  404:                if ( ! pstring(m, line, j, &buf[j], (size_t)(i - j)))
                    405:                        return(0);
1.29      kristaps  406:
1.49    ! kristaps  407:                /* Trailing whitespace?  Check at overwritten byte. */
        !           408:
        !           409:                if (' ' == sv && '\0' == buf[i])
        !           410:                        if ( ! man_pwarn(m, line, i - 1, WTSPACE))
        !           411:                                return(0);
        !           412:
1.31      kristaps  413:                for ( ; ' ' == buf[i]; i++)
                    414:                        /* Skip trailing whitespace. */ ;
1.30      kristaps  415:
1.31      kristaps  416:                j = i;
1.49    ! kristaps  417:
        !           418:                /* Trailing whitespace? */
        !           419:
        !           420:                if (' ' == buf[i - 1] && '\0' == buf[i])
        !           421:                        if ( ! man_pwarn(m, line, i - 1, WTSPACE))
        !           422:                                return(0);
        !           423:
        !           424:                if ('\0' == buf[i])
1.31      kristaps  425:                        break;
                    426:        }
                    427:
                    428:        if (j != i && ! pstring(m, line, j, &buf[j], (size_t)(i - j)))
1.1       kristaps  429:                return(0);
1.31      kristaps  430:
                    431: descope:
1.11      kristaps  432:
                    433:        /*
1.29      kristaps  434:         * Co-ordinate what happens with having a next-line scope open:
                    435:         * first close out the element scope (if applicable), then close
                    436:         * out the block scope (also if applicable).
1.11      kristaps  437:         */
                    438:
1.29      kristaps  439:        if (MAN_ELINE & m->flags) {
                    440:                m->flags &= ~MAN_ELINE;
                    441:                if ( ! man_unscope(m, m->last->parent))
                    442:                        return(0);
                    443:        }
                    444:
                    445:        if ( ! (MAN_BLINE & m->flags))
1.11      kristaps  446:                return(1);
1.29      kristaps  447:        m->flags &= ~MAN_BLINE;
1.11      kristaps  448:
1.29      kristaps  449:        if ( ! man_unscope(m, m->last->parent))
1.11      kristaps  450:                return(0);
1.29      kristaps  451:        return(man_body_alloc(m, line, 0, m->last->tok));
1.1       kristaps  452: }
                    453:
                    454:
1.43      kristaps  455: static int
                    456: macrowarn(struct man *m, int ln, const char *buf)
                    457: {
                    458:        if ( ! (MAN_IGN_MACRO & m->pflags))
                    459:                return(man_verr(m, ln, 0,
                    460:                                "unknown macro: %s%s",
                    461:                                buf, strlen(buf) > 3 ? "..." : ""));
                    462:        return(man_vwarn(m, ln, 0, "unknown macro: %s%s",
                    463:                                buf, strlen(buf) > 3 ? "..." : ""));
                    464: }
                    465:
                    466:
1.1       kristaps  467: int
                    468: man_pmacro(struct man *m, int ln, char *buf)
                    469: {
1.34      kristaps  470:        int              i, j, c, ppos, fl;
                    471:        char             mac[5];
                    472:        struct man_node *n;
1.1       kristaps  473:
                    474:        /* Comments and empties are quickly ignored. */
                    475:
1.29      kristaps  476:        fl = m->flags;
1.11      kristaps  477:
1.46      kristaps  478:        if ('\0' == buf[1])
                    479:                return(1);
1.1       kristaps  480:
1.9       kristaps  481:        i = 1;
                    482:
                    483:        if (' ' == buf[i]) {
                    484:                i++;
1.1       kristaps  485:                while (buf[i] && ' ' == buf[i])
                    486:                        i++;
1.48      kristaps  487:                if ('\0' == buf[i])
1.11      kristaps  488:                        goto out;
1.1       kristaps  489:        }
                    490:
1.10      kristaps  491:        ppos = i;
                    492:
1.1       kristaps  493:        /* Copy the first word into a nil-terminated buffer. */
                    494:
1.10      kristaps  495:        for (j = 0; j < 4; j++, i++) {
1.48      kristaps  496:                if ('\0' == (mac[j] = buf[i]))
1.1       kristaps  497:                        break;
1.10      kristaps  498:                else if (' ' == buf[i])
1.1       kristaps  499:                        break;
1.38      kristaps  500:
                    501:                /* Check for invalid characters. */
                    502:
                    503:                if (isgraph((u_char)buf[i]))
                    504:                        continue;
                    505:                return(man_perr(m, ln, i, WNPRINT));
1.1       kristaps  506:        }
                    507:
1.46      kristaps  508:        mac[j] = '\0';
1.1       kristaps  509:
1.9       kristaps  510:        if (j == 4 || j < 1) {
1.7       kristaps  511:                if ( ! (MAN_IGN_MACRO & m->pflags)) {
1.29      kristaps  512:                        (void)man_perr(m, ln, ppos, WMACROFORM);
1.7       kristaps  513:                        goto err;
                    514:                }
1.29      kristaps  515:                if ( ! man_pwarn(m, ln, ppos, WMACROFORM))
1.7       kristaps  516:                        goto err;
1.12      kristaps  517:                return(1);
1.7       kristaps  518:        }
1.1       kristaps  519:
1.40      kristaps  520:        if (MAN_MAX == (c = man_hash_find(mac))) {
1.43      kristaps  521:                if ( ! macrowarn(m, ln, mac))
1.7       kristaps  522:                        goto err;
1.12      kristaps  523:                return(1);
1.1       kristaps  524:        }
                    525:
                    526:        /* The macro is sane.  Jump to the next word. */
                    527:
                    528:        while (buf[i] && ' ' == buf[i])
                    529:                i++;
                    530:
1.48      kristaps  531:        /* Trailing whitespace? */
                    532:
                    533:        if ('\0' == buf[i] && ' ' == buf[i - 1])
                    534:                if ( ! man_pwarn(m, ln, i - 1, WTSPACE))
                    535:                        goto err;
                    536:
1.34      kristaps  537:        /* Remove prior ELINE macro, if applicable. */
                    538:
                    539:        if (m->flags & MAN_ELINE) {
                    540:                n = m->last;
                    541:                assert(NULL == n->child);
1.37      kristaps  542:                assert(0 == n->nchild);
1.34      kristaps  543:                if ( ! man_nwarn(m, n, WLNSCOPE))
                    544:                        return(0);
                    545:
                    546:                if (n->prev) {
                    547:                        assert(n != n->parent->child);
                    548:                        assert(n == n->prev->next);
                    549:                        n->prev->next = NULL;
                    550:                        m->last = n->prev;
1.37      kristaps  551:                        m->next = MAN_NEXT_SIBLING;
1.34      kristaps  552:                } else {
                    553:                        assert(n == n->parent->child);
                    554:                        n->parent->child = NULL;
                    555:                        m->last = n->parent;
1.37      kristaps  556:                        m->next = MAN_NEXT_CHILD;
1.34      kristaps  557:                }
                    558:
                    559:                man_node_free(n);
                    560:                m->flags &= ~MAN_ELINE;
                    561:        }
                    562:
1.1       kristaps  563:        /* Begin recursive parse sequence. */
                    564:
1.29      kristaps  565:        assert(man_macros[c].fp);
                    566:
                    567:        if ( ! (*man_macros[c].fp)(m, c, ln, ppos, &i, buf))
1.1       kristaps  568:                goto err;
                    569:
1.11      kristaps  570: out:
1.29      kristaps  571:        if ( ! (MAN_BLINE & fl))
                    572:                return(1);
                    573:
                    574:        /*
                    575:         * If we've opened a new next-line element scope, then return
                    576:         * now, as the next line will close out the block scope.
                    577:         */
                    578:
                    579:        if (MAN_ELINE & m->flags)
                    580:                return(1);
                    581:
                    582:        /* Close out the block scope opened in the prior line.  */
1.11      kristaps  583:
1.29      kristaps  584:        assert(MAN_BLINE & m->flags);
                    585:        m->flags &= ~MAN_BLINE;
1.11      kristaps  586:
1.29      kristaps  587:        if ( ! man_unscope(m, m->last->parent))
                    588:                return(0);
                    589:        return(man_body_alloc(m, ln, 0, m->last->tok));
1.1       kristaps  590:
                    591: err:   /* Error out. */
                    592:
1.2       kristaps  593:        m->flags |= MAN_HALT;
1.1       kristaps  594:        return(0);
                    595: }
1.3       kristaps  596:
1.4       kristaps  597:
                    598: int
                    599: man_verr(struct man *man, int ln, int pos, const char *fmt, ...)
                    600: {
                    601:        char             buf[256];
                    602:        va_list          ap;
                    603:
                    604:        if (NULL == man->cb.man_err)
                    605:                return(0);
                    606:
                    607:        va_start(ap, fmt);
                    608:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    609:        va_end(ap);
                    610:        return((*man->cb.man_err)(man->data, ln, pos, buf));
                    611: }
                    612:
                    613:
                    614: int
                    615: man_vwarn(struct man *man, int ln, int pos, const char *fmt, ...)
                    616: {
                    617:        char             buf[256];
                    618:        va_list          ap;
                    619:
                    620:        if (NULL == man->cb.man_warn)
                    621:                return(0);
                    622:
                    623:        va_start(ap, fmt);
                    624:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    625:        va_end(ap);
                    626:        return((*man->cb.man_warn)(man->data, ln, pos, buf));
                    627: }
                    628:
                    629:
1.23      kristaps  630: int
1.27      kristaps  631: man_err(struct man *m, int line, int pos, int iserr, enum merr type)
1.23      kristaps  632: {
                    633:        const char       *p;
                    634:
1.27      kristaps  635:        p = __man_merrnames[(int)type];
1.23      kristaps  636:        assert(p);
                    637:
                    638:        if (iserr)
                    639:                return(man_verr(m, line, pos, p));
                    640:
                    641:        return(man_vwarn(m, line, pos, p));
                    642: }

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