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Annotation of mandoc/man.c, Revision 1.74

1.74    ! kristaps    1: /*     $Id: man.c,v 1.73 2010/05/17 10:50:32 joerg 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:
1.74    ! kristaps   30: #include "mandoc.h"
1.1       kristaps   31: #include "libman.h"
1.45      kristaps   32: #include "libmandoc.h"
1.1       kristaps   33:
                     34: const  char *const __man_macronames[MAN_MAX] = {
1.21      kristaps   35:        "br",           "TH",           "SH",           "SS",
1.1       kristaps   36:        "TP",           "LP",           "PP",           "P",
                     37:        "IP",           "HP",           "SM",           "SB",
                     38:        "BI",           "IB",           "BR",           "RB",
1.11      kristaps   39:        "R",            "B",            "I",            "IR",
1.29      kristaps   40:        "RI",           "na",           "i",            "sp",
1.30      kristaps   41:        "nf",           "fi",           "r",            "RE",
1.52      kristaps   42:        "RS",           "DT",           "UC",           "PD",
1.73      joerg      43:        "Sp",           "Vb",           "Ve",           "AT",
1.1       kristaps   44:        };
                     45:
                     46: const  char * const *man_macronames = __man_macronames;
                     47:
1.16      kristaps   48: static struct man_node *man_node_alloc(int, int,
1.53      kristaps   49:                                enum man_type, enum mant);
1.1       kristaps   50: static int              man_node_append(struct man *,
                     51:                                struct man_node *);
1.54      kristaps   52: static void             man_node_free(struct man_node *);
                     53: static void             man_node_unlink(struct man *,
                     54:                                struct man_node *);
1.72      kristaps   55: static int              man_ptext(struct man *, int, char *, int);
                     56: static int              man_pmacro(struct man *, int, char *, int);
1.2       kristaps   57: static void             man_free1(struct man *);
1.45      kristaps   58: static void             man_alloc1(struct man *);
1.72      kristaps   59: static int              macrowarn(struct man *, int, const char *, int);
1.1       kristaps   60:
                     61:
                     62: const struct man_node *
1.2       kristaps   63: man_node(const struct man *m)
1.1       kristaps   64: {
                     65:
1.2       kristaps   66:        return(MAN_HALT & m->flags ? NULL : m->first);
1.1       kristaps   67: }
                     68:
                     69:
                     70: const struct man_meta *
1.2       kristaps   71: man_meta(const struct man *m)
1.1       kristaps   72: {
                     73:
1.2       kristaps   74:        return(MAN_HALT & m->flags ? NULL : &m->meta);
1.1       kristaps   75: }
                     76:
                     77:
1.45      kristaps   78: void
1.1       kristaps   79: man_reset(struct man *man)
                     80: {
                     81:
1.2       kristaps   82:        man_free1(man);
1.45      kristaps   83:        man_alloc1(man);
1.1       kristaps   84: }
                     85:
                     86:
                     87: void
                     88: man_free(struct man *man)
                     89: {
                     90:
1.2       kristaps   91:        man_free1(man);
1.1       kristaps   92:        free(man);
                     93: }
                     94:
                     95:
                     96: struct man *
1.74    ! kristaps   97: man_alloc(void *data, int pflags, mandocmsg msg)
1.1       kristaps   98: {
                     99:        struct man      *p;
                    100:
1.45      kristaps  101:        p = mandoc_calloc(1, sizeof(struct man));
1.2       kristaps  102:
1.40      kristaps  103:        man_hash_init();
1.4       kristaps  104:        p->data = data;
1.7       kristaps  105:        p->pflags = pflags;
1.74    ! kristaps  106:        p->msg = msg;
1.45      kristaps  107:
                    108:        man_alloc1(p);
1.1       kristaps  109:        return(p);
                    110: }
                    111:
                    112:
                    113: int
                    114: man_endparse(struct man *m)
                    115: {
                    116:
1.3       kristaps  117:        if (MAN_HALT & m->flags)
                    118:                return(0);
                    119:        else if (man_macroend(m))
                    120:                return(1);
                    121:        m->flags |= MAN_HALT;
                    122:        return(0);
1.1       kristaps  123: }
                    124:
                    125:
                    126: int
1.72      kristaps  127: man_parseln(struct man *m, int ln, char *buf, int offs)
1.1       kristaps  128: {
                    129:
1.72      kristaps  130:        if (MAN_HALT & m->flags)
                    131:                return(0);
                    132:
                    133:        return(('.' == buf[offs] || '\'' == buf[offs]) ?
                    134:                        man_pmacro(m, ln, buf, offs) :
                    135:                        man_ptext(m, ln, buf, offs));
1.1       kristaps  136: }
                    137:
                    138:
1.2       kristaps  139: static void
                    140: man_free1(struct man *man)
                    141: {
                    142:
                    143:        if (man->first)
1.54      kristaps  144:                man_node_delete(man, man->first);
1.2       kristaps  145:        if (man->meta.title)
                    146:                free(man->meta.title);
1.6       kristaps  147:        if (man->meta.source)
                    148:                free(man->meta.source);
1.2       kristaps  149:        if (man->meta.vol)
                    150:                free(man->meta.vol);
1.68      kristaps  151:        if (man->meta.msec)
                    152:                free(man->meta.msec);
1.2       kristaps  153: }
                    154:
                    155:
1.45      kristaps  156: static void
1.2       kristaps  157: man_alloc1(struct man *m)
                    158: {
                    159:
1.44      kristaps  160:        memset(&m->meta, 0, sizeof(struct man_meta));
1.2       kristaps  161:        m->flags = 0;
1.45      kristaps  162:        m->last = mandoc_calloc(1, sizeof(struct man_node));
1.2       kristaps  163:        m->first = m->last;
                    164:        m->last->type = MAN_ROOT;
1.54      kristaps  165:        m->last->tok = MAN_MAX;
1.2       kristaps  166:        m->next = MAN_NEXT_CHILD;
                    167: }
                    168:
                    169:
1.1       kristaps  170: static int
                    171: man_node_append(struct man *man, struct man_node *p)
                    172: {
                    173:
                    174:        assert(man->last);
                    175:        assert(man->first);
                    176:        assert(MAN_ROOT != p->type);
                    177:
                    178:        switch (man->next) {
                    179:        case (MAN_NEXT_SIBLING):
                    180:                man->last->next = p;
                    181:                p->prev = man->last;
                    182:                p->parent = man->last->parent;
                    183:                break;
                    184:        case (MAN_NEXT_CHILD):
                    185:                man->last->child = p;
                    186:                p->parent = man->last;
                    187:                break;
                    188:        default:
                    189:                abort();
                    190:                /* NOTREACHED */
                    191:        }
1.22      kristaps  192:
1.54      kristaps  193:        assert(p->parent);
1.22      kristaps  194:        p->parent->nchild++;
1.1       kristaps  195:
1.29      kristaps  196:        if ( ! man_valid_pre(man, p))
                    197:                return(0);
                    198:
                    199:        switch (p->type) {
                    200:        case (MAN_HEAD):
                    201:                assert(MAN_BLOCK == p->parent->type);
                    202:                p->parent->head = p;
                    203:                break;
                    204:        case (MAN_BODY):
                    205:                assert(MAN_BLOCK == p->parent->type);
                    206:                p->parent->body = p;
                    207:                break;
                    208:        default:
                    209:                break;
                    210:        }
                    211:
1.2       kristaps  212:        man->last = p;
                    213:
1.1       kristaps  214:        switch (p->type) {
1.2       kristaps  215:        case (MAN_TEXT):
                    216:                if ( ! man_valid_post(man))
                    217:                        return(0);
                    218:                if ( ! man_action_post(man))
                    219:                        return(0);
1.1       kristaps  220:                break;
                    221:        default:
                    222:                break;
                    223:        }
                    224:
                    225:        return(1);
                    226: }
                    227:
                    228:
                    229: static struct man_node *
1.53      kristaps  230: man_node_alloc(int line, int pos, enum man_type type, enum mant tok)
1.1       kristaps  231: {
                    232:        struct man_node *p;
                    233:
1.45      kristaps  234:        p = mandoc_calloc(1, sizeof(struct man_node));
1.1       kristaps  235:        p->line = line;
                    236:        p->pos = pos;
                    237:        p->type = type;
1.16      kristaps  238:        p->tok = tok;
1.1       kristaps  239:        return(p);
                    240: }
                    241:
                    242:
                    243: int
1.53      kristaps  244: man_elem_alloc(struct man *m, int line, int pos, enum mant tok)
1.1       kristaps  245: {
                    246:        struct man_node *p;
                    247:
1.16      kristaps  248:        p = man_node_alloc(line, pos, MAN_ELEM, tok);
1.30      kristaps  249:        if ( ! man_node_append(m, p))
                    250:                return(0);
                    251:        m->next = MAN_NEXT_CHILD;
                    252:        return(1);
1.1       kristaps  253: }
                    254:
                    255:
                    256: int
1.53      kristaps  257: man_head_alloc(struct man *m, int line, int pos, enum mant tok)
1.29      kristaps  258: {
                    259:        struct man_node *p;
                    260:
                    261:        p = man_node_alloc(line, pos, MAN_HEAD, tok);
                    262:        if ( ! man_node_append(m, p))
                    263:                return(0);
                    264:        m->next = MAN_NEXT_CHILD;
                    265:        return(1);
                    266: }
                    267:
                    268:
                    269: int
1.53      kristaps  270: man_body_alloc(struct man *m, int line, int pos, enum mant tok)
1.29      kristaps  271: {
                    272:        struct man_node *p;
                    273:
                    274:        p = man_node_alloc(line, pos, MAN_BODY, 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
1.53      kristaps  283: man_block_alloc(struct man *m, int line, int pos, enum mant tok)
1.29      kristaps  284: {
                    285:        struct man_node *p;
                    286:
                    287:        p = man_node_alloc(line, pos, MAN_BLOCK, tok);
                    288:        if ( ! man_node_append(m, p))
                    289:                return(0);
                    290:        m->next = MAN_NEXT_CHILD;
                    291:        return(1);
                    292: }
                    293:
                    294:
1.61      kristaps  295: int
                    296: man_word_alloc(struct man *m, int line, int pos, const char *word)
1.1       kristaps  297: {
1.31      kristaps  298:        struct man_node *n;
1.61      kristaps  299:        size_t           sv, len;
                    300:
                    301:        len = strlen(word);
1.1       kristaps  302:
1.53      kristaps  303:        n = man_node_alloc(line, pos, MAN_TEXT, MAN_MAX);
1.45      kristaps  304:        n->string = mandoc_malloc(len + 1);
1.61      kristaps  305:        sv = strlcpy(n->string, word, len + 1);
1.31      kristaps  306:
                    307:        /* Prohibit truncation. */
                    308:        assert(sv < len + 1);
                    309:
                    310:        if ( ! man_node_append(m, n))
1.30      kristaps  311:                return(0);
1.61      kristaps  312:
1.30      kristaps  313:        m->next = MAN_NEXT_SIBLING;
                    314:        return(1);
1.1       kristaps  315: }
                    316:
                    317:
1.54      kristaps  318: /*
                    319:  * Free all of the resources held by a node.  This does NOT unlink a
                    320:  * node from its context; for that, see man_node_unlink().
                    321:  */
                    322: static void
1.1       kristaps  323: man_node_free(struct man_node *p)
                    324: {
                    325:
                    326:        if (p->string)
                    327:                free(p->string);
                    328:        free(p);
                    329: }
                    330:
                    331:
                    332: void
1.54      kristaps  333: man_node_delete(struct man *m, struct man_node *p)
1.1       kristaps  334: {
                    335:
1.54      kristaps  336:        while (p->child)
                    337:                man_node_delete(m, p->child);
                    338:
                    339:        man_node_unlink(m, p);
1.1       kristaps  340:        man_node_free(p);
                    341: }
                    342:
                    343:
                    344: static int
1.72      kristaps  345: man_ptext(struct man *m, int line, char *buf, int offs)
1.1       kristaps  346: {
1.61      kristaps  347:        int              i;
1.60      kristaps  348:
                    349:        /* Ignore bogus comments. */
                    350:
1.72      kristaps  351:        if ('\\' == buf[offs] &&
                    352:                        '.' == buf[offs + 1] &&
                    353:                        '"' == buf[offs + 2])
1.74    ! kristaps  354:                return(man_pmsg(m, line, offs, MANDOCERR_BADCOMMENT));
1.31      kristaps  355:
1.35      kristaps  356:        /* Literal free-form text whitespace is preserved. */
                    357:
                    358:        if (MAN_LITERAL & m->flags) {
1.72      kristaps  359:                if ( ! man_word_alloc(m, line, offs, buf + offs))
1.35      kristaps  360:                        return(0);
                    361:                goto descope;
                    362:        }
                    363:
1.61      kristaps  364:        /* Pump blank lines directly into the backend. */
1.31      kristaps  365:
1.72      kristaps  366:        for (i = offs; ' ' == buf[i]; i++)
1.31      kristaps  367:                /* Skip leading whitespace. */ ;
1.48      kristaps  368:
1.49      kristaps  369:        if ('\0' == buf[i]) {
1.61      kristaps  370:                /* Allocate a blank entry. */
1.72      kristaps  371:                if ( ! man_word_alloc(m, line, offs, ""))
1.31      kristaps  372:                        return(0);
                    373:                goto descope;
                    374:        }
                    375:
1.63      kristaps  376:        /*
                    377:         * Warn if the last un-escaped character is whitespace. Then
                    378:         * strip away the remaining spaces (tabs stay!).
                    379:         */
1.29      kristaps  380:
1.61      kristaps  381:        i = (int)strlen(buf);
                    382:        assert(i);
1.49      kristaps  383:
1.63      kristaps  384:        if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
1.64      kristaps  385:                if (i > 1 && '\\' != buf[i - 2])
1.74    ! kristaps  386:                        if ( ! man_pmsg(m, line, i - 1, MANDOCERR_EOLNSPACE))
1.49      kristaps  387:                                return(0);
1.63      kristaps  388:
                    389:                for (--i; i && ' ' == buf[i]; i--)
                    390:                        /* Spin back to non-space. */ ;
                    391:
                    392:                /* Jump ahead of escaped whitespace. */
                    393:                i += '\\' == buf[i] ? 2 : 1;
                    394:
                    395:                buf[i] = '\0';
                    396:        }
1.49      kristaps  397:
1.72      kristaps  398:        if ( ! man_word_alloc(m, line, offs, buf + offs))
1.1       kristaps  399:                return(0);
1.65      kristaps  400:
                    401:        /*
                    402:         * End-of-sentence check.  If the last character is an unescaped
                    403:         * EOS character, then flag the node as being the end of a
                    404:         * sentence.  The front-end will know how to interpret this.
                    405:         */
1.67      kristaps  406:
1.65      kristaps  407:        assert(i);
1.66      kristaps  408:        if (mandoc_eos(buf, (size_t)i))
1.65      kristaps  409:                m->last->flags |= MAN_EOS;
1.31      kristaps  410:
                    411: descope:
1.11      kristaps  412:        /*
1.29      kristaps  413:         * Co-ordinate what happens with having a next-line scope open:
                    414:         * first close out the element scope (if applicable), then close
                    415:         * out the block scope (also if applicable).
1.11      kristaps  416:         */
                    417:
1.29      kristaps  418:        if (MAN_ELINE & m->flags) {
                    419:                m->flags &= ~MAN_ELINE;
1.74    ! kristaps  420:                if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.29      kristaps  421:                        return(0);
                    422:        }
                    423:
                    424:        if ( ! (MAN_BLINE & m->flags))
1.11      kristaps  425:                return(1);
1.29      kristaps  426:        m->flags &= ~MAN_BLINE;
1.11      kristaps  427:
1.74    ! kristaps  428:        if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.11      kristaps  429:                return(0);
1.72      kristaps  430:        return(man_body_alloc(m, line, offs, m->last->tok));
1.1       kristaps  431: }
                    432:
                    433:
1.43      kristaps  434: static int
1.72      kristaps  435: macrowarn(struct man *m, int ln, const char *buf, int offs)
1.43      kristaps  436: {
1.74    ! kristaps  437:        int              rc;
        !           438:
        !           439:        rc = man_vmsg(m, MANDOCERR_MACRO, ln, offs,
        !           440:                        "unknown macro: %s%s",
        !           441:                        buf, strlen(buf) > 3 ? "..." : "");
        !           442:
        !           443:        return(MAN_IGN_MACRO & m->pflags ? rc : 0);
1.43      kristaps  444: }
                    445:
                    446:
1.1       kristaps  447: int
1.72      kristaps  448: man_pmacro(struct man *m, int ln, char *buf, int offs)
1.1       kristaps  449: {
1.58      kristaps  450:        int              i, j, ppos;
1.53      kristaps  451:        enum mant        tok;
1.34      kristaps  452:        char             mac[5];
                    453:        struct man_node *n;
1.1       kristaps  454:
                    455:        /* Comments and empties are quickly ignored. */
                    456:
1.72      kristaps  457:        offs++;
                    458:
                    459:        if ('\0' == buf[offs])
1.46      kristaps  460:                return(1);
1.1       kristaps  461:
1.72      kristaps  462:        i = offs;
1.9       kristaps  463:
1.56      kristaps  464:        /*
                    465:         * Skip whitespace between the control character and initial
                    466:         * text.  "Whitespace" is both spaces and tabs.
                    467:         */
1.62      kristaps  468:
1.57      kristaps  469:        if (' ' == buf[i] || '\t' == buf[i]) {
1.9       kristaps  470:                i++;
1.56      kristaps  471:                while (buf[i] && (' ' == buf[i] || '\t' == buf[i]))
1.1       kristaps  472:                        i++;
1.48      kristaps  473:                if ('\0' == buf[i])
1.11      kristaps  474:                        goto out;
1.1       kristaps  475:        }
                    476:
1.10      kristaps  477:        ppos = i;
                    478:
1.1       kristaps  479:        /* Copy the first word into a nil-terminated buffer. */
                    480:
1.10      kristaps  481:        for (j = 0; j < 4; j++, i++) {
1.48      kristaps  482:                if ('\0' == (mac[j] = buf[i]))
1.1       kristaps  483:                        break;
1.10      kristaps  484:                else if (' ' == buf[i])
1.1       kristaps  485:                        break;
1.38      kristaps  486:
                    487:                /* Check for invalid characters. */
                    488:
                    489:                if (isgraph((u_char)buf[i]))
                    490:                        continue;
1.74    ! kristaps  491:                if ( ! man_pmsg(m, ln, i, MANDOCERR_BADCHAR))
        !           492:                        return(0);
        !           493:                i--;
1.1       kristaps  494:        }
                    495:
1.46      kristaps  496:        mac[j] = '\0';
1.1       kristaps  497:
1.9       kristaps  498:        if (j == 4 || j < 1) {
1.74    ! kristaps  499:                if ( ! macrowarn(m, ln, mac, ppos))
1.7       kristaps  500:                        goto err;
1.12      kristaps  501:                return(1);
1.7       kristaps  502:        }
1.1       kristaps  503:
1.53      kristaps  504:        if (MAN_MAX == (tok = man_hash_find(mac))) {
1.72      kristaps  505:                if ( ! macrowarn(m, ln, mac, ppos))
1.7       kristaps  506:                        goto err;
1.12      kristaps  507:                return(1);
1.1       kristaps  508:        }
                    509:
                    510:        /* The macro is sane.  Jump to the next word. */
                    511:
                    512:        while (buf[i] && ' ' == buf[i])
                    513:                i++;
                    514:
1.62      kristaps  515:        /*
                    516:         * Trailing whitespace.  Note that tabs are allowed to be passed
                    517:         * into the parser as "text", so we only warn about spaces here.
                    518:         */
1.48      kristaps  519:
                    520:        if ('\0' == buf[i] && ' ' == buf[i - 1])
1.74    ! kristaps  521:                if ( ! man_pmsg(m, ln, i - 1, MANDOCERR_EOLNSPACE))
1.48      kristaps  522:                        goto err;
                    523:
1.50      kristaps  524:        /*
1.51      kristaps  525:         * Remove prior ELINE macro, as it's being clobbering by a new
                    526:         * macro.  Note that NSCOPED macros do not close out ELINE
                    527:         * macros---they don't print text---so we let those slip by.
1.50      kristaps  528:         */
1.34      kristaps  529:
1.53      kristaps  530:        if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.51      kristaps  531:                        m->flags & MAN_ELINE) {
                    532:                assert(MAN_TEXT != m->last->type);
                    533:
                    534:                /*
                    535:                 * This occurs in the following construction:
                    536:                 *   .B
                    537:                 *   .br
                    538:                 *   .B
                    539:                 *   .br
                    540:                 *   I hate man macros.
                    541:                 * Flat-out disallow this madness.
                    542:                 */
1.74    ! kristaps  543:                if (MAN_NSCOPED & man_macros[m->last->tok].flags) {
        !           544:                        man_pmsg(m, ln, ppos, MANDOCERR_SYNTLINESCOPE);
        !           545:                        return(0);
        !           546:                }
1.51      kristaps  547:
1.34      kristaps  548:                n = m->last;
1.51      kristaps  549:
                    550:                assert(n);
1.34      kristaps  551:                assert(NULL == n->child);
1.37      kristaps  552:                assert(0 == n->nchild);
1.51      kristaps  553:
1.74    ! kristaps  554:                if ( ! man_nmsg(m, n, MANDOCERR_LINESCOPE))
1.34      kristaps  555:                        return(0);
                    556:
1.54      kristaps  557:                man_node_delete(m, n);
1.34      kristaps  558:                m->flags &= ~MAN_ELINE;
                    559:        }
                    560:
1.59      kristaps  561:        /*
                    562:         * Save the fact that we're in the next-line for a block.  In
                    563:         * this way, embedded roff instructions can "remember" state
                    564:         * when they exit.
                    565:         */
                    566:
                    567:        if (MAN_BLINE & m->flags)
                    568:                m->flags |= MAN_BPLINE;
                    569:
                    570:        /* Call to handler... */
1.1       kristaps  571:
1.53      kristaps  572:        assert(man_macros[tok].fp);
                    573:        if ( ! (*man_macros[tok].fp)(m, tok, ln, ppos, &i, buf))
1.1       kristaps  574:                goto err;
                    575:
1.11      kristaps  576: out:
1.50      kristaps  577:        /*
                    578:         * We weren't in a block-line scope when entering the
                    579:         * above-parsed macro, so return.
                    580:         */
                    581:
1.58      kristaps  582:        if ( ! (MAN_BPLINE & m->flags)) {
1.50      kristaps  583:                m->flags &= ~MAN_ILINE;
1.29      kristaps  584:                return(1);
1.50      kristaps  585:        }
1.58      kristaps  586:        m->flags &= ~MAN_BPLINE;
1.50      kristaps  587:
                    588:        /*
                    589:         * If we're in a block scope, then allow this macro to slip by
                    590:         * without closing scope around it.
                    591:         */
                    592:
                    593:        if (MAN_ILINE & m->flags) {
                    594:                m->flags &= ~MAN_ILINE;
                    595:                return(1);
                    596:        }
1.29      kristaps  597:
                    598:        /*
                    599:         * If we've opened a new next-line element scope, then return
                    600:         * now, as the next line will close out the block scope.
                    601:         */
                    602:
                    603:        if (MAN_ELINE & m->flags)
                    604:                return(1);
                    605:
                    606:        /* Close out the block scope opened in the prior line.  */
1.11      kristaps  607:
1.29      kristaps  608:        assert(MAN_BLINE & m->flags);
                    609:        m->flags &= ~MAN_BLINE;
1.11      kristaps  610:
1.74    ! kristaps  611:        if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.29      kristaps  612:                return(0);
1.72      kristaps  613:        return(man_body_alloc(m, ln, offs, m->last->tok));
1.1       kristaps  614:
                    615: err:   /* Error out. */
                    616:
1.2       kristaps  617:        m->flags |= MAN_HALT;
1.1       kristaps  618:        return(0);
                    619: }
1.3       kristaps  620:
1.4       kristaps  621:
                    622: int
1.74    ! kristaps  623: man_vmsg(struct man *man, enum mandocerr t,
        !           624:                int ln, int pos, const char *fmt, ...)
1.4       kristaps  625: {
                    626:        char             buf[256];
                    627:        va_list          ap;
                    628:
                    629:        va_start(ap, fmt);
1.74    ! kristaps  630:        vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1.4       kristaps  631:        va_end(ap);
1.74    ! kristaps  632:        return((*man->msg)(t, man->data, ln, pos, buf));
1.51      kristaps  633: }
                    634:
                    635:
1.54      kristaps  636: /*
                    637:  * Unlink a node from its context.  If "m" is provided, the last parse
                    638:  * point will also be adjusted accordingly.
                    639:  */
                    640: static void
1.51      kristaps  641: man_node_unlink(struct man *m, struct man_node *n)
                    642: {
                    643:
1.54      kristaps  644:        /* Adjust siblings. */
                    645:
                    646:        if (n->prev)
1.51      kristaps  647:                n->prev->next = n->next;
1.54      kristaps  648:        if (n->next)
                    649:                n->next->prev = n->prev;
                    650:
                    651:        /* Adjust parent. */
                    652:
                    653:        if (n->parent) {
                    654:                n->parent->nchild--;
                    655:                if (n->parent->child == n)
                    656:                        n->parent->child = n->prev ? n->prev : n->next;
                    657:        }
                    658:
                    659:        /* Adjust parse point, if applicable. */
                    660:
                    661:        if (m && m->last == n) {
                    662:                /*XXX: this can occur when bailing from validation. */
                    663:                /*assert(NULL == n->next);*/
                    664:                if (n->prev) {
1.51      kristaps  665:                        m->last = n->prev;
                    666:                        m->next = MAN_NEXT_SIBLING;
1.54      kristaps  667:                } else {
1.51      kristaps  668:                        m->last = n->parent;
                    669:                        m->next = MAN_NEXT_CHILD;
                    670:                }
                    671:        }
                    672:
1.54      kristaps  673:        if (m && m->first == n)
                    674:                m->first = NULL;
1.23      kristaps  675: }

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