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Annotation of mandoc/man.c, Revision 1.51

1.51    ! kristaps    1: /*     $Id: man.c,v 1.50 2010/03/22 05:59:32 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 */
1.51    ! kristaps   38:        "over-zealous prior line scope violation", /* WLNSCOPE2 */
1.27      kristaps   39:        "trailing whitespace", /* WTSPACE */
                     40:        "unterminated quoted parameter", /* WTQUOTE */
                     41:        "document has no body", /* WNODATA */
                     42:        "document has no title/section", /* WNOTITLE */
                     43:        "invalid escape sequence", /* WESCAPE */
1.28      kristaps   44:        "invalid number format", /* WNUMFMT */
1.29      kristaps   45:        "expected block head arguments", /* WHEADARGS */
                     46:        "expected block body arguments", /* WBODYARGS */
                     47:        "expected empty block head", /* WNHEADARGS */
                     48:        "ill-formed macro", /* WMACROFORM */
1.30      kristaps   49:        "scope open on exit", /* WEXITSCOPE */
1.35      kristaps   50:        "no scope context", /* WNOSCOPE */
                     51:        "literal context already open", /* WOLITERAL */
                     52:        "no literal context open" /* WNLITERAL */
1.27      kristaps   53: };
                     54:
1.1       kristaps   55: const  char *const __man_macronames[MAN_MAX] = {
1.21      kristaps   56:        "br",           "TH",           "SH",           "SS",
1.1       kristaps   57:        "TP",           "LP",           "PP",           "P",
                     58:        "IP",           "HP",           "SM",           "SB",
                     59:        "BI",           "IB",           "BR",           "RB",
1.11      kristaps   60:        "R",            "B",            "I",            "IR",
1.29      kristaps   61:        "RI",           "na",           "i",            "sp",
1.30      kristaps   62:        "nf",           "fi",           "r",            "RE",
1.42      kristaps   63:        "RS",           "DT",           "UC",           "PD"
1.1       kristaps   64:        };
                     65:
                     66: const  char * const *man_macronames = __man_macronames;
                     67:
1.16      kristaps   68: static struct man_node *man_node_alloc(int, int,
                     69:                                enum man_type, int);
1.1       kristaps   70: static int              man_node_append(struct man *,
                     71:                                struct man_node *);
                     72: static int              man_ptext(struct man *, int, char *);
                     73: static int              man_pmacro(struct man *, int, char *);
1.2       kristaps   74: static void             man_free1(struct man *);
1.45      kristaps   75: static void             man_alloc1(struct man *);
1.31      kristaps   76: static int              pstring(struct man *, int, int,
                     77:                                const char *, size_t);
1.43      kristaps   78: static int              macrowarn(struct man *, int, const char *);
1.1       kristaps   79:
                     80:
                     81: const struct man_node *
1.2       kristaps   82: man_node(const struct man *m)
1.1       kristaps   83: {
                     84:
1.2       kristaps   85:        return(MAN_HALT & m->flags ? NULL : m->first);
1.1       kristaps   86: }
                     87:
                     88:
                     89: const struct man_meta *
1.2       kristaps   90: man_meta(const struct man *m)
1.1       kristaps   91: {
                     92:
1.2       kristaps   93:        return(MAN_HALT & m->flags ? NULL : &m->meta);
1.1       kristaps   94: }
                     95:
                     96:
1.45      kristaps   97: void
1.1       kristaps   98: man_reset(struct man *man)
                     99: {
                    100:
1.2       kristaps  101:        man_free1(man);
1.45      kristaps  102:        man_alloc1(man);
1.1       kristaps  103: }
                    104:
                    105:
                    106: void
                    107: man_free(struct man *man)
                    108: {
                    109:
1.2       kristaps  110:        man_free1(man);
1.1       kristaps  111:        free(man);
                    112: }
                    113:
                    114:
                    115: struct man *
1.7       kristaps  116: man_alloc(void *data, int pflags, const struct man_cb *cb)
1.1       kristaps  117: {
                    118:        struct man      *p;
                    119:
1.45      kristaps  120:        p = mandoc_calloc(1, sizeof(struct man));
1.2       kristaps  121:
1.45      kristaps  122:        if (cb)
                    123:                memcpy(&p->cb, cb, sizeof(struct man_cb));
1.1       kristaps  124:
1.40      kristaps  125:        man_hash_init();
1.4       kristaps  126:        p->data = data;
1.7       kristaps  127:        p->pflags = pflags;
1.45      kristaps  128:
                    129:        man_alloc1(p);
1.1       kristaps  130:        return(p);
                    131: }
                    132:
                    133:
                    134: int
                    135: man_endparse(struct man *m)
                    136: {
                    137:
1.3       kristaps  138:        if (MAN_HALT & m->flags)
                    139:                return(0);
                    140:        else if (man_macroend(m))
                    141:                return(1);
                    142:        m->flags |= MAN_HALT;
                    143:        return(0);
1.1       kristaps  144: }
                    145:
                    146:
                    147: int
                    148: man_parseln(struct man *m, int ln, char *buf)
                    149: {
                    150:
                    151:        return('.' == *buf ?
                    152:                        man_pmacro(m, ln, buf) :
                    153:                        man_ptext(m, ln, buf));
                    154: }
                    155:
                    156:
1.2       kristaps  157: static void
                    158: man_free1(struct man *man)
                    159: {
                    160:
                    161:        if (man->first)
                    162:                man_node_freelist(man->first);
                    163:        if (man->meta.title)
                    164:                free(man->meta.title);
1.6       kristaps  165:        if (man->meta.source)
                    166:                free(man->meta.source);
1.2       kristaps  167:        if (man->meta.vol)
                    168:                free(man->meta.vol);
                    169: }
                    170:
                    171:
1.45      kristaps  172: static void
1.2       kristaps  173: man_alloc1(struct man *m)
                    174: {
                    175:
1.44      kristaps  176:        memset(&m->meta, 0, sizeof(struct man_meta));
1.2       kristaps  177:        m->flags = 0;
1.45      kristaps  178:        m->last = mandoc_calloc(1, sizeof(struct man_node));
1.2       kristaps  179:        m->first = m->last;
                    180:        m->last->type = MAN_ROOT;
                    181:        m->next = MAN_NEXT_CHILD;
                    182: }
                    183:
                    184:
1.1       kristaps  185: static int
                    186: man_node_append(struct man *man, struct man_node *p)
                    187: {
                    188:
                    189:        assert(man->last);
                    190:        assert(man->first);
                    191:        assert(MAN_ROOT != p->type);
                    192:
                    193:        switch (man->next) {
                    194:        case (MAN_NEXT_SIBLING):
                    195:                man->last->next = p;
                    196:                p->prev = man->last;
                    197:                p->parent = man->last->parent;
                    198:                break;
                    199:        case (MAN_NEXT_CHILD):
                    200:                man->last->child = p;
                    201:                p->parent = man->last;
                    202:                break;
                    203:        default:
                    204:                abort();
                    205:                /* NOTREACHED */
                    206:        }
1.22      kristaps  207:
                    208:        p->parent->nchild++;
1.1       kristaps  209:
1.29      kristaps  210:        if ( ! man_valid_pre(man, p))
                    211:                return(0);
                    212:
                    213:        switch (p->type) {
                    214:        case (MAN_HEAD):
                    215:                assert(MAN_BLOCK == p->parent->type);
                    216:                p->parent->head = p;
                    217:                break;
                    218:        case (MAN_BODY):
                    219:                assert(MAN_BLOCK == p->parent->type);
                    220:                p->parent->body = p;
                    221:                break;
                    222:        default:
                    223:                break;
                    224:        }
                    225:
1.2       kristaps  226:        man->last = p;
                    227:
1.1       kristaps  228:        switch (p->type) {
1.2       kristaps  229:        case (MAN_TEXT):
                    230:                if ( ! man_valid_post(man))
                    231:                        return(0);
                    232:                if ( ! man_action_post(man))
                    233:                        return(0);
1.1       kristaps  234:                break;
                    235:        default:
                    236:                break;
                    237:        }
                    238:
                    239:        return(1);
                    240: }
                    241:
                    242:
                    243: static struct man_node *
1.16      kristaps  244: man_node_alloc(int line, int pos, enum man_type type, int tok)
1.1       kristaps  245: {
                    246:        struct man_node *p;
                    247:
1.45      kristaps  248:        p = mandoc_calloc(1, sizeof(struct man_node));
1.1       kristaps  249:        p->line = line;
                    250:        p->pos = pos;
                    251:        p->type = type;
1.16      kristaps  252:        p->tok = tok;
1.1       kristaps  253:        return(p);
                    254: }
                    255:
                    256:
                    257: int
1.30      kristaps  258: man_elem_alloc(struct man *m, int line, int pos, int tok)
1.1       kristaps  259: {
                    260:        struct man_node *p;
                    261:
1.16      kristaps  262:        p = man_node_alloc(line, pos, MAN_ELEM, tok);
1.30      kristaps  263:        if ( ! man_node_append(m, p))
                    264:                return(0);
                    265:        m->next = MAN_NEXT_CHILD;
                    266:        return(1);
1.1       kristaps  267: }
                    268:
                    269:
                    270: int
1.29      kristaps  271: man_head_alloc(struct man *m, int line, int pos, int tok)
                    272: {
                    273:        struct man_node *p;
                    274:
                    275:        p = man_node_alloc(line, pos, MAN_HEAD, tok);
                    276:        if ( ! man_node_append(m, p))
                    277:                return(0);
                    278:        m->next = MAN_NEXT_CHILD;
                    279:        return(1);
                    280: }
                    281:
                    282:
                    283: int
                    284: man_body_alloc(struct man *m, int line, int pos, int tok)
                    285: {
                    286:        struct man_node *p;
                    287:
                    288:        p = man_node_alloc(line, pos, MAN_BODY, tok);
                    289:        if ( ! man_node_append(m, p))
                    290:                return(0);
                    291:        m->next = MAN_NEXT_CHILD;
                    292:        return(1);
                    293: }
                    294:
                    295:
                    296: int
                    297: man_block_alloc(struct man *m, int line, int pos, int tok)
                    298: {
                    299:        struct man_node *p;
                    300:
                    301:        p = man_node_alloc(line, pos, MAN_BLOCK, tok);
                    302:        if ( ! man_node_append(m, p))
                    303:                return(0);
                    304:        m->next = MAN_NEXT_CHILD;
                    305:        return(1);
                    306: }
                    307:
                    308:
1.31      kristaps  309: static int
                    310: pstring(struct man *m, int line, int pos,
                    311:                const char *p, size_t len)
1.1       kristaps  312: {
1.31      kristaps  313:        struct man_node *n;
                    314:        size_t           sv;
1.1       kristaps  315:
1.31      kristaps  316:        n = man_node_alloc(line, pos, MAN_TEXT, -1);
1.45      kristaps  317:        n->string = mandoc_malloc(len + 1);
1.31      kristaps  318:        sv = strlcpy(n->string, p, len + 1);
                    319:
                    320:        /* Prohibit truncation. */
                    321:        assert(sv < len + 1);
                    322:
                    323:        if ( ! man_node_append(m, n))
1.30      kristaps  324:                return(0);
                    325:        m->next = MAN_NEXT_SIBLING;
                    326:        return(1);
1.1       kristaps  327: }
                    328:
                    329:
1.31      kristaps  330: int
                    331: man_word_alloc(struct man *m, int line, int pos, const char *word)
                    332: {
                    333:
                    334:        return(pstring(m, line, pos, word, strlen(word)));
                    335: }
                    336:
                    337:
1.1       kristaps  338: void
                    339: man_node_free(struct man_node *p)
                    340: {
                    341:
                    342:        if (p->string)
                    343:                free(p->string);
1.24      kristaps  344:        if (p->parent)
                    345:                p->parent->nchild--;
1.1       kristaps  346:        free(p);
                    347: }
                    348:
                    349:
                    350: void
                    351: man_node_freelist(struct man_node *p)
                    352: {
1.37      kristaps  353:        struct man_node *n;
1.1       kristaps  354:
                    355:        if (p->child)
                    356:                man_node_freelist(p->child);
1.24      kristaps  357:        assert(0 == p->nchild);
1.37      kristaps  358:        n = p->next;
1.1       kristaps  359:        man_node_free(p);
1.37      kristaps  360:        if (n)
                    361:                man_node_freelist(n);
1.1       kristaps  362: }
                    363:
                    364:
                    365: static int
                    366: man_ptext(struct man *m, int line, char *buf)
                    367: {
1.31      kristaps  368:        int              i, j;
1.49      kristaps  369:        char             sv;
1.31      kristaps  370:
1.35      kristaps  371:        /* Literal free-form text whitespace is preserved. */
                    372:
                    373:        if (MAN_LITERAL & m->flags) {
                    374:                if ( ! man_word_alloc(m, line, 0, buf))
                    375:                        return(0);
                    376:                goto descope;
                    377:        }
                    378:
1.31      kristaps  379:        /* First de-chunk and allocate words. */
                    380:
                    381:        for (i = 0; ' ' == buf[i]; i++)
                    382:                /* Skip leading whitespace. */ ;
1.48      kristaps  383:
1.49      kristaps  384:        if ('\0' == buf[i]) {
                    385:                /* Trailing whitespace? */
                    386:                if (i && ' ' == buf[i - 1])
                    387:                        if ( ! man_pwarn(m, line, i - 1, WTSPACE))
                    388:                                return(0);
1.31      kristaps  389:                if ( ! pstring(m, line, 0, &buf[i], 0))
                    390:                        return(0);
                    391:                goto descope;
                    392:        }
                    393:
                    394:        for (j = i; buf[i]; i++) {
                    395:                if (' ' != buf[i])
                    396:                        continue;
                    397:
                    398:                /* Escaped whitespace. */
                    399:                if (i && ' ' == buf[i] && '\\' == buf[i - 1])
                    400:                        continue;
1.1       kristaps  401:
1.49      kristaps  402:                sv = buf[i];
                    403:                buf[i++] = '\0';
                    404:
1.31      kristaps  405:                if ( ! pstring(m, line, j, &buf[j], (size_t)(i - j)))
                    406:                        return(0);
1.29      kristaps  407:
1.49      kristaps  408:                /* Trailing whitespace?  Check at overwritten byte. */
                    409:
                    410:                if (' ' == sv && '\0' == buf[i])
                    411:                        if ( ! man_pwarn(m, line, i - 1, WTSPACE))
                    412:                                return(0);
                    413:
1.31      kristaps  414:                for ( ; ' ' == buf[i]; i++)
                    415:                        /* Skip trailing whitespace. */ ;
1.30      kristaps  416:
1.31      kristaps  417:                j = i;
1.49      kristaps  418:
                    419:                /* Trailing whitespace? */
                    420:
                    421:                if (' ' == buf[i - 1] && '\0' == buf[i])
                    422:                        if ( ! man_pwarn(m, line, i - 1, WTSPACE))
                    423:                                return(0);
                    424:
                    425:                if ('\0' == buf[i])
1.31      kristaps  426:                        break;
                    427:        }
                    428:
                    429:        if (j != i && ! pstring(m, line, j, &buf[j], (size_t)(i - j)))
1.1       kristaps  430:                return(0);
1.31      kristaps  431:
                    432: descope:
1.11      kristaps  433:
                    434:        /*
1.29      kristaps  435:         * Co-ordinate what happens with having a next-line scope open:
                    436:         * first close out the element scope (if applicable), then close
                    437:         * out the block scope (also if applicable).
1.11      kristaps  438:         */
                    439:
1.29      kristaps  440:        if (MAN_ELINE & m->flags) {
                    441:                m->flags &= ~MAN_ELINE;
                    442:                if ( ! man_unscope(m, m->last->parent))
                    443:                        return(0);
                    444:        }
                    445:
                    446:        if ( ! (MAN_BLINE & m->flags))
1.11      kristaps  447:                return(1);
1.29      kristaps  448:        m->flags &= ~MAN_BLINE;
1.11      kristaps  449:
1.29      kristaps  450:        if ( ! man_unscope(m, m->last->parent))
1.11      kristaps  451:                return(0);
1.29      kristaps  452:        return(man_body_alloc(m, line, 0, m->last->tok));
1.1       kristaps  453: }
                    454:
                    455:
1.43      kristaps  456: static int
                    457: macrowarn(struct man *m, int ln, const char *buf)
                    458: {
                    459:        if ( ! (MAN_IGN_MACRO & m->pflags))
                    460:                return(man_verr(m, ln, 0,
                    461:                                "unknown macro: %s%s",
                    462:                                buf, strlen(buf) > 3 ? "..." : ""));
                    463:        return(man_vwarn(m, ln, 0, "unknown macro: %s%s",
                    464:                                buf, strlen(buf) > 3 ? "..." : ""));
                    465: }
                    466:
                    467:
1.1       kristaps  468: int
                    469: man_pmacro(struct man *m, int ln, char *buf)
                    470: {
1.34      kristaps  471:        int              i, j, c, ppos, fl;
                    472:        char             mac[5];
                    473:        struct man_node *n;
1.1       kristaps  474:
                    475:        /* Comments and empties are quickly ignored. */
                    476:
1.29      kristaps  477:        fl = m->flags;
1.11      kristaps  478:
1.46      kristaps  479:        if ('\0' == buf[1])
                    480:                return(1);
1.1       kristaps  481:
1.9       kristaps  482:        i = 1;
                    483:
                    484:        if (' ' == buf[i]) {
                    485:                i++;
1.1       kristaps  486:                while (buf[i] && ' ' == buf[i])
                    487:                        i++;
1.48      kristaps  488:                if ('\0' == buf[i])
1.11      kristaps  489:                        goto out;
1.1       kristaps  490:        }
                    491:
1.10      kristaps  492:        ppos = i;
                    493:
1.1       kristaps  494:        /* Copy the first word into a nil-terminated buffer. */
                    495:
1.10      kristaps  496:        for (j = 0; j < 4; j++, i++) {
1.48      kristaps  497:                if ('\0' == (mac[j] = buf[i]))
1.1       kristaps  498:                        break;
1.10      kristaps  499:                else if (' ' == buf[i])
1.1       kristaps  500:                        break;
1.38      kristaps  501:
                    502:                /* Check for invalid characters. */
                    503:
                    504:                if (isgraph((u_char)buf[i]))
                    505:                        continue;
                    506:                return(man_perr(m, ln, i, WNPRINT));
1.1       kristaps  507:        }
                    508:
1.46      kristaps  509:        mac[j] = '\0';
1.1       kristaps  510:
1.9       kristaps  511:        if (j == 4 || j < 1) {
1.7       kristaps  512:                if ( ! (MAN_IGN_MACRO & m->pflags)) {
1.29      kristaps  513:                        (void)man_perr(m, ln, ppos, WMACROFORM);
1.7       kristaps  514:                        goto err;
                    515:                }
1.29      kristaps  516:                if ( ! man_pwarn(m, ln, ppos, WMACROFORM))
1.7       kristaps  517:                        goto err;
1.12      kristaps  518:                return(1);
1.7       kristaps  519:        }
1.1       kristaps  520:
1.40      kristaps  521:        if (MAN_MAX == (c = man_hash_find(mac))) {
1.43      kristaps  522:                if ( ! macrowarn(m, ln, mac))
1.7       kristaps  523:                        goto err;
1.12      kristaps  524:                return(1);
1.1       kristaps  525:        }
                    526:
                    527:        /* The macro is sane.  Jump to the next word. */
                    528:
                    529:        while (buf[i] && ' ' == buf[i])
                    530:                i++;
                    531:
1.48      kristaps  532:        /* Trailing whitespace? */
                    533:
                    534:        if ('\0' == buf[i] && ' ' == buf[i - 1])
                    535:                if ( ! man_pwarn(m, ln, i - 1, WTSPACE))
                    536:                        goto err;
                    537:
1.50      kristaps  538:        /*
1.51    ! kristaps  539:         * Remove prior ELINE macro, as it's being clobbering by a new
        !           540:         * macro.  Note that NSCOPED macros do not close out ELINE
        !           541:         * macros---they don't print text---so we let those slip by.
1.50      kristaps  542:         */
1.34      kristaps  543:
1.51    ! kristaps  544:        if ( ! (MAN_NSCOPED & man_macros[c].flags) &&
        !           545:                        m->flags & MAN_ELINE) {
        !           546:                assert(MAN_TEXT != m->last->type);
        !           547:
        !           548:                /*
        !           549:                 * This occurs in the following construction:
        !           550:                 *   .B
        !           551:                 *   .br
        !           552:                 *   .B
        !           553:                 *   .br
        !           554:                 *   I hate man macros.
        !           555:                 * Flat-out disallow this madness.
        !           556:                 */
        !           557:                if (MAN_NSCOPED & man_macros[m->last->tok].flags)
        !           558:                        return(man_perr(m, ln, ppos, WLNSCOPE));
        !           559:
1.34      kristaps  560:                n = m->last;
1.51    ! kristaps  561:
        !           562:                assert(n);
1.34      kristaps  563:                assert(NULL == n->child);
1.37      kristaps  564:                assert(0 == n->nchild);
1.51    ! kristaps  565:
1.34      kristaps  566:                if ( ! man_nwarn(m, n, WLNSCOPE))
                    567:                        return(0);
                    568:
1.51    ! kristaps  569:                man_node_unlink(m, n);
1.34      kristaps  570:                man_node_free(n);
                    571:                m->flags &= ~MAN_ELINE;
                    572:        }
                    573:
1.1       kristaps  574:        /* Begin recursive parse sequence. */
                    575:
1.29      kristaps  576:        assert(man_macros[c].fp);
                    577:
                    578:        if ( ! (*man_macros[c].fp)(m, c, ln, ppos, &i, buf))
1.1       kristaps  579:                goto err;
                    580:
1.11      kristaps  581: out:
1.50      kristaps  582:        /*
                    583:         * We weren't in a block-line scope when entering the
                    584:         * above-parsed macro, so return.
                    585:         */
                    586:
                    587:        if ( ! (MAN_BLINE & fl)) {
                    588:                m->flags &= ~MAN_ILINE;
1.29      kristaps  589:                return(1);
1.50      kristaps  590:        }
                    591:
                    592:        /*
                    593:         * If we're in a block scope, then allow this macro to slip by
                    594:         * without closing scope around it.
                    595:         */
                    596:
                    597:        if (MAN_ILINE & m->flags) {
                    598:                m->flags &= ~MAN_ILINE;
                    599:                return(1);
                    600:        }
1.29      kristaps  601:
                    602:        /*
                    603:         * If we've opened a new next-line element scope, then return
                    604:         * now, as the next line will close out the block scope.
                    605:         */
                    606:
                    607:        if (MAN_ELINE & m->flags)
                    608:                return(1);
                    609:
                    610:        /* Close out the block scope opened in the prior line.  */
1.11      kristaps  611:
1.29      kristaps  612:        assert(MAN_BLINE & m->flags);
                    613:        m->flags &= ~MAN_BLINE;
1.11      kristaps  614:
1.29      kristaps  615:        if ( ! man_unscope(m, m->last->parent))
                    616:                return(0);
                    617:        return(man_body_alloc(m, ln, 0, m->last->tok));
1.1       kristaps  618:
                    619: err:   /* Error out. */
                    620:
1.2       kristaps  621:        m->flags |= MAN_HALT;
1.1       kristaps  622:        return(0);
                    623: }
1.3       kristaps  624:
1.4       kristaps  625:
                    626: int
                    627: man_verr(struct man *man, int ln, int pos, const char *fmt, ...)
                    628: {
                    629:        char             buf[256];
                    630:        va_list          ap;
                    631:
                    632:        if (NULL == man->cb.man_err)
                    633:                return(0);
                    634:
                    635:        va_start(ap, fmt);
                    636:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    637:        va_end(ap);
                    638:        return((*man->cb.man_err)(man->data, ln, pos, buf));
                    639: }
                    640:
                    641:
                    642: int
                    643: man_vwarn(struct man *man, int ln, int pos, const char *fmt, ...)
                    644: {
                    645:        char             buf[256];
                    646:        va_list          ap;
                    647:
                    648:        if (NULL == man->cb.man_warn)
                    649:                return(0);
                    650:
                    651:        va_start(ap, fmt);
                    652:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    653:        va_end(ap);
                    654:        return((*man->cb.man_warn)(man->data, ln, pos, buf));
                    655: }
                    656:
                    657:
1.23      kristaps  658: int
1.27      kristaps  659: man_err(struct man *m, int line, int pos, int iserr, enum merr type)
1.23      kristaps  660: {
                    661:        const char       *p;
                    662:
1.27      kristaps  663:        p = __man_merrnames[(int)type];
1.23      kristaps  664:        assert(p);
                    665:
                    666:        if (iserr)
                    667:                return(man_verr(m, line, pos, p));
                    668:
                    669:        return(man_vwarn(m, line, pos, p));
1.51    ! kristaps  670: }
        !           671:
        !           672:
        !           673: void
        !           674: man_node_unlink(struct man *m, struct man_node *n)
        !           675: {
        !           676:
        !           677:        if (n->prev) {
        !           678:                n->prev->next = n->next;
        !           679:                if (m->last == n) {
        !           680:                        assert(NULL == n->next);
        !           681:                        m->last = n->prev;
        !           682:                        m->next = MAN_NEXT_SIBLING;
        !           683:                }
        !           684:        } else {
        !           685:                n->parent->child = n->next;
        !           686:                if (m->last == n) {
        !           687:                        assert(NULL == n->next);
        !           688:                        m->last = n->parent;
        !           689:                        m->next = MAN_NEXT_CHILD;
        !           690:                }
        !           691:        }
        !           692:
        !           693:        if (n->next)
        !           694:                n->next->prev = n->prev;
1.23      kristaps  695: }

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