[BACK]Return to man.c CVS log [TXT][DIR] Up to [cvsweb.bsd.lv] / mandoc

Annotation of mandoc/man.c, Revision 1.99

1.99    ! kristaps    1: /*     $Id: man.c,v 1.98 2011/02/06 22:02:58 kristaps Exp $ */
1.1       kristaps    2: /*
1.82      schwarze    3:  * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
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 <stdarg.h>
                     25: #include <stdlib.h>
                     26: #include <stdio.h>
                     27: #include <string.h>
                     28:
1.74      kristaps   29: #include "mandoc.h"
1.1       kristaps   30: #include "libman.h"
1.45      kristaps   31: #include "libmandoc.h"
1.1       kristaps   32:
                     33: const  char *const __man_macronames[MAN_MAX] = {
1.21      kristaps   34:        "br",           "TH",           "SH",           "SS",
1.1       kristaps   35:        "TP",           "LP",           "PP",           "P",
                     36:        "IP",           "HP",           "SM",           "SB",
                     37:        "BI",           "IB",           "BR",           "RB",
1.11      kristaps   38:        "R",            "B",            "I",            "IR",
1.92      kristaps   39:        "RI",           "na",           "sp",           "nf",
                     40:        "fi",           "RE",           "RS",           "DT",
                     41:        "UC",           "PD",           "AT",           "in",
                     42:        "ft"
1.1       kristaps   43:        };
                     44:
                     45: const  char * const *man_macronames = __man_macronames;
                     46:
1.97      kristaps   47: static struct man_node *man_node_alloc(struct man *, int, int,
1.53      kristaps   48:                                enum man_type, enum mant);
1.1       kristaps   49: static int              man_node_append(struct man *,
                     50:                                struct man_node *);
1.94      kristaps   51: static int              man_span_alloc(struct man *,
                     52:                                const struct tbl_span *);
1.54      kristaps   53: static void             man_node_free(struct man_node *);
                     54: static void             man_node_unlink(struct man *,
                     55:                                struct man_node *);
1.72      kristaps   56: static int              man_ptext(struct man *, int, char *, int);
1.79      kristaps   57: static int              man_pmacro(struct man *, int, char *, int);
1.2       kristaps   58: static void             man_free1(struct man *);
1.45      kristaps   59: static void             man_alloc1(struct man *);
1.94      kristaps   60: static int              man_descope(struct man *, int, int);
1.1       kristaps   61:
                     62:
                     63: const struct man_node *
1.2       kristaps   64: man_node(const struct man *m)
1.1       kristaps   65: {
                     66:
1.96      kristaps   67:        assert( ! (MAN_HALT & m->flags));
                     68:        return(m->first);
1.1       kristaps   69: }
                     70:
                     71:
                     72: const struct man_meta *
1.2       kristaps   73: man_meta(const struct man *m)
1.1       kristaps   74: {
                     75:
1.96      kristaps   76:        assert( ! (MAN_HALT & m->flags));
                     77:        return(&m->meta);
1.1       kristaps   78: }
                     79:
                     80:
1.45      kristaps   81: void
1.1       kristaps   82: man_reset(struct man *man)
                     83: {
                     84:
1.2       kristaps   85:        man_free1(man);
1.45      kristaps   86:        man_alloc1(man);
1.1       kristaps   87: }
                     88:
                     89:
                     90: void
                     91: man_free(struct man *man)
                     92: {
                     93:
1.2       kristaps   94:        man_free1(man);
1.1       kristaps   95:        free(man);
                     96: }
                     97:
                     98:
                     99: struct man *
1.87      schwarze  100: man_alloc(struct regset *regs, void *data, mandocmsg msg)
1.1       kristaps  101: {
                    102:        struct man      *p;
                    103:
1.45      kristaps  104:        p = mandoc_calloc(1, sizeof(struct man));
1.2       kristaps  105:
1.40      kristaps  106:        man_hash_init();
1.4       kristaps  107:        p->data = data;
1.74      kristaps  108:        p->msg = msg;
1.79      kristaps  109:        p->regs = regs;
1.45      kristaps  110:
                    111:        man_alloc1(p);
1.1       kristaps  112:        return(p);
                    113: }
                    114:
                    115:
                    116: int
                    117: man_endparse(struct man *m)
                    118: {
                    119:
1.96      kristaps  120:        assert( ! (MAN_HALT & m->flags));
                    121:        if (man_macroend(m))
1.3       kristaps  122:                return(1);
                    123:        m->flags |= MAN_HALT;
                    124:        return(0);
1.1       kristaps  125: }
                    126:
                    127:
                    128: int
1.79      kristaps  129: man_parseln(struct man *m, int ln, char *buf, int offs)
1.1       kristaps  130: {
                    131:
1.97      kristaps  132:        m->flags |= MAN_NEWLINE;
                    133:
1.96      kristaps  134:        assert( ! (MAN_HALT & m->flags));
1.72      kristaps  135:        return(('.' == buf[offs] || '\'' == buf[offs]) ?
1.79      kristaps  136:                        man_pmacro(m, ln, buf, offs) :
1.72      kristaps  137:                        man_ptext(m, ln, buf, offs));
1.1       kristaps  138: }
                    139:
                    140:
1.2       kristaps  141: static void
                    142: man_free1(struct man *man)
                    143: {
                    144:
                    145:        if (man->first)
1.54      kristaps  146:                man_node_delete(man, man->first);
1.2       kristaps  147:        if (man->meta.title)
                    148:                free(man->meta.title);
1.6       kristaps  149:        if (man->meta.source)
                    150:                free(man->meta.source);
1.75      kristaps  151:        if (man->meta.rawdate)
                    152:                free(man->meta.rawdate);
1.2       kristaps  153:        if (man->meta.vol)
                    154:                free(man->meta.vol);
1.68      kristaps  155:        if (man->meta.msec)
                    156:                free(man->meta.msec);
1.2       kristaps  157: }
                    158:
                    159:
1.45      kristaps  160: static void
1.2       kristaps  161: man_alloc1(struct man *m)
                    162: {
                    163:
1.44      kristaps  164:        memset(&m->meta, 0, sizeof(struct man_meta));
1.2       kristaps  165:        m->flags = 0;
1.45      kristaps  166:        m->last = mandoc_calloc(1, sizeof(struct man_node));
1.2       kristaps  167:        m->first = m->last;
                    168:        m->last->type = MAN_ROOT;
1.54      kristaps  169:        m->last->tok = MAN_MAX;
1.2       kristaps  170:        m->next = MAN_NEXT_CHILD;
                    171: }
                    172:
                    173:
1.1       kristaps  174: static int
                    175: man_node_append(struct man *man, struct man_node *p)
                    176: {
                    177:
                    178:        assert(man->last);
                    179:        assert(man->first);
                    180:        assert(MAN_ROOT != p->type);
                    181:
                    182:        switch (man->next) {
                    183:        case (MAN_NEXT_SIBLING):
                    184:                man->last->next = p;
                    185:                p->prev = man->last;
                    186:                p->parent = man->last->parent;
                    187:                break;
                    188:        case (MAN_NEXT_CHILD):
                    189:                man->last->child = p;
                    190:                p->parent = man->last;
                    191:                break;
                    192:        default:
                    193:                abort();
                    194:                /* NOTREACHED */
                    195:        }
1.22      kristaps  196:
1.54      kristaps  197:        assert(p->parent);
1.22      kristaps  198:        p->parent->nchild++;
1.1       kristaps  199:
1.29      kristaps  200:        if ( ! man_valid_pre(man, p))
                    201:                return(0);
                    202:
                    203:        switch (p->type) {
                    204:        case (MAN_HEAD):
                    205:                assert(MAN_BLOCK == p->parent->type);
                    206:                p->parent->head = p;
                    207:                break;
                    208:        case (MAN_BODY):
                    209:                assert(MAN_BLOCK == p->parent->type);
                    210:                p->parent->body = p;
                    211:                break;
                    212:        default:
                    213:                break;
                    214:        }
                    215:
1.2       kristaps  216:        man->last = p;
                    217:
1.1       kristaps  218:        switch (p->type) {
1.94      kristaps  219:        case (MAN_TBL):
                    220:                /* FALLTHROUGH */
1.2       kristaps  221:        case (MAN_TEXT):
                    222:                if ( ! man_valid_post(man))
                    223:                        return(0);
1.1       kristaps  224:                break;
                    225:        default:
                    226:                break;
                    227:        }
                    228:
                    229:        return(1);
                    230: }
                    231:
                    232:
                    233: static struct man_node *
1.97      kristaps  234: man_node_alloc(struct man *m, int line, int pos,
                    235:                enum man_type type, enum mant tok)
1.1       kristaps  236: {
                    237:        struct man_node *p;
                    238:
1.45      kristaps  239:        p = mandoc_calloc(1, sizeof(struct man_node));
1.1       kristaps  240:        p->line = line;
                    241:        p->pos = pos;
                    242:        p->type = type;
1.16      kristaps  243:        p->tok = tok;
1.97      kristaps  244:
                    245:        if (MAN_NEWLINE & m->flags)
                    246:                p->flags |= MAN_LINE;
                    247:        m->flags &= ~MAN_NEWLINE;
1.1       kristaps  248:        return(p);
                    249: }
                    250:
                    251:
                    252: int
1.53      kristaps  253: man_elem_alloc(struct man *m, int line, int pos, enum mant tok)
1.1       kristaps  254: {
                    255:        struct man_node *p;
                    256:
1.97      kristaps  257:        p = man_node_alloc(m, line, pos, MAN_ELEM, tok);
1.30      kristaps  258:        if ( ! man_node_append(m, p))
                    259:                return(0);
                    260:        m->next = MAN_NEXT_CHILD;
                    261:        return(1);
1.1       kristaps  262: }
                    263:
                    264:
                    265: int
1.53      kristaps  266: man_head_alloc(struct man *m, int line, int pos, enum mant tok)
1.29      kristaps  267: {
                    268:        struct man_node *p;
                    269:
1.97      kristaps  270:        p = man_node_alloc(m, line, pos, MAN_HEAD, tok);
1.29      kristaps  271:        if ( ! man_node_append(m, p))
                    272:                return(0);
                    273:        m->next = MAN_NEXT_CHILD;
                    274:        return(1);
                    275: }
                    276:
                    277:
                    278: int
1.53      kristaps  279: man_body_alloc(struct man *m, int line, int pos, enum mant tok)
1.29      kristaps  280: {
                    281:        struct man_node *p;
                    282:
1.97      kristaps  283:        p = man_node_alloc(m, line, pos, MAN_BODY, tok);
1.29      kristaps  284:        if ( ! man_node_append(m, p))
                    285:                return(0);
                    286:        m->next = MAN_NEXT_CHILD;
                    287:        return(1);
                    288: }
                    289:
                    290:
                    291: int
1.53      kristaps  292: man_block_alloc(struct man *m, int line, int pos, enum mant tok)
1.29      kristaps  293: {
                    294:        struct man_node *p;
                    295:
1.97      kristaps  296:        p = man_node_alloc(m, line, pos, MAN_BLOCK, tok);
1.29      kristaps  297:        if ( ! man_node_append(m, p))
                    298:                return(0);
                    299:        m->next = MAN_NEXT_CHILD;
                    300:        return(1);
                    301: }
                    302:
1.94      kristaps  303: static int
                    304: man_span_alloc(struct man *m, const struct tbl_span *span)
                    305: {
                    306:        struct man_node *n;
                    307:
1.98      kristaps  308:        n = man_node_alloc(m, span->line, 0, MAN_TBL, MAN_MAX);
1.95      kristaps  309:        n->span = span;
1.94      kristaps  310:
                    311:        if ( ! man_node_append(m, n))
                    312:                return(0);
                    313:
                    314:        m->next = MAN_NEXT_SIBLING;
                    315:        return(1);
                    316: }
1.29      kristaps  317:
1.61      kristaps  318: int
                    319: man_word_alloc(struct man *m, int line, int pos, const char *word)
1.1       kristaps  320: {
1.31      kristaps  321:        struct man_node *n;
1.61      kristaps  322:        size_t           sv, len;
                    323:
                    324:        len = strlen(word);
1.1       kristaps  325:
1.97      kristaps  326:        n = man_node_alloc(m, line, pos, MAN_TEXT, MAN_MAX);
1.45      kristaps  327:        n->string = mandoc_malloc(len + 1);
1.61      kristaps  328:        sv = strlcpy(n->string, word, len + 1);
1.31      kristaps  329:
                    330:        /* Prohibit truncation. */
                    331:        assert(sv < len + 1);
                    332:
                    333:        if ( ! man_node_append(m, n))
1.30      kristaps  334:                return(0);
1.61      kristaps  335:
1.30      kristaps  336:        m->next = MAN_NEXT_SIBLING;
                    337:        return(1);
1.1       kristaps  338: }
                    339:
                    340:
1.54      kristaps  341: /*
                    342:  * Free all of the resources held by a node.  This does NOT unlink a
                    343:  * node from its context; for that, see man_node_unlink().
                    344:  */
                    345: static void
1.1       kristaps  346: man_node_free(struct man_node *p)
                    347: {
                    348:
                    349:        if (p->string)
                    350:                free(p->string);
                    351:        free(p);
                    352: }
                    353:
                    354:
                    355: void
1.54      kristaps  356: man_node_delete(struct man *m, struct man_node *p)
1.1       kristaps  357: {
                    358:
1.54      kristaps  359:        while (p->child)
                    360:                man_node_delete(m, p->child);
                    361:
                    362:        man_node_unlink(m, p);
1.1       kristaps  363:        man_node_free(p);
                    364: }
                    365:
                    366:
1.94      kristaps  367: int
                    368: man_addspan(struct man *m, const struct tbl_span *sp)
                    369: {
                    370:
1.96      kristaps  371:        assert( ! (MAN_HALT & m->flags));
1.94      kristaps  372:        if ( ! man_span_alloc(m, sp))
                    373:                return(0);
1.99    ! kristaps  374:        return(man_descope(m, sp->line, 0));
1.94      kristaps  375: }
                    376:
                    377: static int
                    378: man_descope(struct man *m, int line, int offs)
                    379: {
                    380:        /*
                    381:         * Co-ordinate what happens with having a next-line scope open:
                    382:         * first close out the element scope (if applicable), then close
                    383:         * out the block scope (also if applicable).
                    384:         */
                    385:
                    386:        if (MAN_ELINE & m->flags) {
                    387:                m->flags &= ~MAN_ELINE;
                    388:                if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
                    389:                        return(0);
                    390:        }
                    391:
                    392:        if ( ! (MAN_BLINE & m->flags))
                    393:                return(1);
                    394:        m->flags &= ~MAN_BLINE;
                    395:
                    396:        if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
                    397:                return(0);
                    398:        return(man_body_alloc(m, line, offs, m->last->tok));
                    399: }
                    400:
                    401:
1.1       kristaps  402: static int
1.72      kristaps  403: man_ptext(struct man *m, int line, char *buf, int offs)
1.1       kristaps  404: {
1.61      kristaps  405:        int              i;
1.60      kristaps  406:
                    407:        /* Ignore bogus comments. */
                    408:
1.72      kristaps  409:        if ('\\' == buf[offs] &&
                    410:                        '.' == buf[offs + 1] &&
1.93      kristaps  411:                        '"' == buf[offs + 2]) {
                    412:                man_pmsg(m, line, offs, MANDOCERR_BADCOMMENT);
                    413:                return(1);
                    414:        }
1.31      kristaps  415:
1.35      kristaps  416:        /* Literal free-form text whitespace is preserved. */
                    417:
                    418:        if (MAN_LITERAL & m->flags) {
1.72      kristaps  419:                if ( ! man_word_alloc(m, line, offs, buf + offs))
1.35      kristaps  420:                        return(0);
1.94      kristaps  421:                return(man_descope(m, line, offs));
1.35      kristaps  422:        }
                    423:
1.61      kristaps  424:        /* Pump blank lines directly into the backend. */
1.31      kristaps  425:
1.72      kristaps  426:        for (i = offs; ' ' == buf[i]; i++)
1.31      kristaps  427:                /* Skip leading whitespace. */ ;
1.48      kristaps  428:
1.49      kristaps  429:        if ('\0' == buf[i]) {
1.61      kristaps  430:                /* Allocate a blank entry. */
1.72      kristaps  431:                if ( ! man_word_alloc(m, line, offs, ""))
1.31      kristaps  432:                        return(0);
1.94      kristaps  433:                return(man_descope(m, line, offs));
1.31      kristaps  434:        }
                    435:
1.63      kristaps  436:        /*
                    437:         * Warn if the last un-escaped character is whitespace. Then
                    438:         * strip away the remaining spaces (tabs stay!).
                    439:         */
1.29      kristaps  440:
1.61      kristaps  441:        i = (int)strlen(buf);
                    442:        assert(i);
1.49      kristaps  443:
1.63      kristaps  444:        if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
1.64      kristaps  445:                if (i > 1 && '\\' != buf[i - 2])
1.93      kristaps  446:                        man_pmsg(m, line, i - 1, MANDOCERR_EOLNSPACE);
1.63      kristaps  447:
                    448:                for (--i; i && ' ' == buf[i]; i--)
                    449:                        /* Spin back to non-space. */ ;
                    450:
                    451:                /* Jump ahead of escaped whitespace. */
                    452:                i += '\\' == buf[i] ? 2 : 1;
                    453:
                    454:                buf[i] = '\0';
                    455:        }
1.49      kristaps  456:
1.72      kristaps  457:        if ( ! man_word_alloc(m, line, offs, buf + offs))
1.1       kristaps  458:                return(0);
1.65      kristaps  459:
                    460:        /*
                    461:         * End-of-sentence check.  If the last character is an unescaped
                    462:         * EOS character, then flag the node as being the end of a
                    463:         * sentence.  The front-end will know how to interpret this.
                    464:         */
1.67      kristaps  465:
1.65      kristaps  466:        assert(i);
1.83      schwarze  467:        if (mandoc_eos(buf, (size_t)i, 0))
1.65      kristaps  468:                m->last->flags |= MAN_EOS;
1.31      kristaps  469:
1.94      kristaps  470:        return(man_descope(m, line, offs));
1.1       kristaps  471: }
                    472:
                    473:
1.96      kristaps  474: static int
1.79      kristaps  475: man_pmacro(struct man *m, int ln, char *buf, int offs)
1.1       kristaps  476: {
1.58      kristaps  477:        int              i, j, ppos;
1.53      kristaps  478:        enum mant        tok;
1.34      kristaps  479:        char             mac[5];
                    480:        struct man_node *n;
1.1       kristaps  481:
                    482:        /* Comments and empties are quickly ignored. */
                    483:
1.72      kristaps  484:        offs++;
                    485:
                    486:        if ('\0' == buf[offs])
1.46      kristaps  487:                return(1);
1.1       kristaps  488:
1.72      kristaps  489:        i = offs;
1.9       kristaps  490:
1.56      kristaps  491:        /*
                    492:         * Skip whitespace between the control character and initial
                    493:         * text.  "Whitespace" is both spaces and tabs.
                    494:         */
1.62      kristaps  495:
1.57      kristaps  496:        if (' ' == buf[i] || '\t' == buf[i]) {
1.9       kristaps  497:                i++;
1.56      kristaps  498:                while (buf[i] && (' ' == buf[i] || '\t' == buf[i]))
1.1       kristaps  499:                        i++;
1.48      kristaps  500:                if ('\0' == buf[i])
1.11      kristaps  501:                        goto out;
1.1       kristaps  502:        }
                    503:
1.10      kristaps  504:        ppos = i;
                    505:
1.86      schwarze  506:        /*
                    507:         * Copy the first word into a nil-terminated buffer.
                    508:         * Stop copying when a tab, space, or eoln is encountered.
                    509:         */
1.1       kristaps  510:
1.86      schwarze  511:        j = 0;
                    512:        while (j < 4 && '\0' != buf[i] && ' ' != buf[i] && '\t' != buf[i])
                    513:                mac[j++] = buf[i++];
1.46      kristaps  514:        mac[j] = '\0';
1.1       kristaps  515:
1.87      schwarze  516:        tok = (j > 0 && j < 4) ? man_hash_find(mac) : MAN_MAX;
                    517:        if (MAN_MAX == tok) {
1.90      kristaps  518:                man_vmsg(m, MANDOCERR_MACRO, ln, ppos, "%s", buf + ppos - 1);
1.12      kristaps  519:                return(1);
1.1       kristaps  520:        }
                    521:
                    522:        /* The macro is sane.  Jump to the next word. */
                    523:
                    524:        while (buf[i] && ' ' == buf[i])
                    525:                i++;
                    526:
1.62      kristaps  527:        /*
                    528:         * Trailing whitespace.  Note that tabs are allowed to be passed
                    529:         * into the parser as "text", so we only warn about spaces here.
                    530:         */
1.48      kristaps  531:
                    532:        if ('\0' == buf[i] && ' ' == buf[i - 1])
1.93      kristaps  533:                man_pmsg(m, ln, i - 1, MANDOCERR_EOLNSPACE);
1.48      kristaps  534:
1.50      kristaps  535:        /*
1.90      kristaps  536:         * Remove prior ELINE macro, as it's being clobbered by a new
1.51      kristaps  537:         * macro.  Note that NSCOPED macros do not close out ELINE
                    538:         * macros---they don't print text---so we let those slip by.
1.50      kristaps  539:         */
1.34      kristaps  540:
1.53      kristaps  541:        if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.51      kristaps  542:                        m->flags & MAN_ELINE) {
1.90      kristaps  543:                n = m->last;
                    544:                assert(MAN_TEXT != n->type);
1.51      kristaps  545:
1.90      kristaps  546:                /* Remove repeated NSCOPED macros causing ELINE. */
1.51      kristaps  547:
1.90      kristaps  548:                if (MAN_NSCOPED & man_macros[n->tok].flags)
                    549:                        n = n->parent;
1.51      kristaps  550:
1.90      kristaps  551:                man_vmsg(m, MANDOCERR_LINESCOPE, n->line, n->pos,
                    552:                                "%s", man_macronames[n->tok]);
1.34      kristaps  553:
1.54      kristaps  554:                man_node_delete(m, n);
1.34      kristaps  555:                m->flags &= ~MAN_ELINE;
                    556:        }
                    557:
1.59      kristaps  558:        /*
                    559:         * Save the fact that we're in the next-line for a block.  In
                    560:         * this way, embedded roff instructions can "remember" state
                    561:         * when they exit.
                    562:         */
                    563:
                    564:        if (MAN_BLINE & m->flags)
                    565:                m->flags |= MAN_BPLINE;
                    566:
                    567:        /* Call to handler... */
1.1       kristaps  568:
1.53      kristaps  569:        assert(man_macros[tok].fp);
1.79      kristaps  570:        if ( ! (*man_macros[tok].fp)(m, tok, ln, ppos, &i, buf))
1.1       kristaps  571:                goto err;
                    572:
1.11      kristaps  573: out:
1.50      kristaps  574:        /*
                    575:         * We weren't in a block-line scope when entering the
                    576:         * above-parsed macro, so return.
                    577:         */
                    578:
1.58      kristaps  579:        if ( ! (MAN_BPLINE & m->flags)) {
1.50      kristaps  580:                m->flags &= ~MAN_ILINE;
1.29      kristaps  581:                return(1);
1.50      kristaps  582:        }
1.58      kristaps  583:        m->flags &= ~MAN_BPLINE;
1.50      kristaps  584:
                    585:        /*
                    586:         * If we're in a block scope, then allow this macro to slip by
                    587:         * without closing scope around it.
                    588:         */
                    589:
                    590:        if (MAN_ILINE & m->flags) {
                    591:                m->flags &= ~MAN_ILINE;
                    592:                return(1);
                    593:        }
1.29      kristaps  594:
                    595:        /*
                    596:         * If we've opened a new next-line element scope, then return
                    597:         * now, as the next line will close out the block scope.
                    598:         */
                    599:
                    600:        if (MAN_ELINE & m->flags)
                    601:                return(1);
                    602:
                    603:        /* Close out the block scope opened in the prior line.  */
1.11      kristaps  604:
1.29      kristaps  605:        assert(MAN_BLINE & m->flags);
                    606:        m->flags &= ~MAN_BLINE;
1.11      kristaps  607:
1.74      kristaps  608:        if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.29      kristaps  609:                return(0);
1.72      kristaps  610:        return(man_body_alloc(m, ln, offs, m->last->tok));
1.1       kristaps  611:
                    612: err:   /* Error out. */
                    613:
1.2       kristaps  614:        m->flags |= MAN_HALT;
1.1       kristaps  615:        return(0);
                    616: }
1.3       kristaps  617:
1.4       kristaps  618:
                    619: int
1.74      kristaps  620: man_vmsg(struct man *man, enum mandocerr t,
                    621:                int ln, int pos, const char *fmt, ...)
1.4       kristaps  622: {
                    623:        char             buf[256];
                    624:        va_list          ap;
                    625:
                    626:        va_start(ap, fmt);
1.74      kristaps  627:        vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1.4       kristaps  628:        va_end(ap);
1.74      kristaps  629:        return((*man->msg)(t, man->data, ln, pos, buf));
1.51      kristaps  630: }
                    631:
                    632:
1.54      kristaps  633: /*
                    634:  * Unlink a node from its context.  If "m" is provided, the last parse
                    635:  * point will also be adjusted accordingly.
                    636:  */
                    637: static void
1.51      kristaps  638: man_node_unlink(struct man *m, struct man_node *n)
                    639: {
                    640:
1.54      kristaps  641:        /* Adjust siblings. */
                    642:
                    643:        if (n->prev)
1.51      kristaps  644:                n->prev->next = n->next;
1.54      kristaps  645:        if (n->next)
                    646:                n->next->prev = n->prev;
                    647:
                    648:        /* Adjust parent. */
                    649:
                    650:        if (n->parent) {
                    651:                n->parent->nchild--;
                    652:                if (n->parent->child == n)
                    653:                        n->parent->child = n->prev ? n->prev : n->next;
                    654:        }
                    655:
                    656:        /* Adjust parse point, if applicable. */
                    657:
                    658:        if (m && m->last == n) {
                    659:                /*XXX: this can occur when bailing from validation. */
                    660:                /*assert(NULL == n->next);*/
                    661:                if (n->prev) {
1.51      kristaps  662:                        m->last = n->prev;
                    663:                        m->next = MAN_NEXT_SIBLING;
1.54      kristaps  664:                } else {
1.51      kristaps  665:                        m->last = n->parent;
                    666:                        m->next = MAN_NEXT_CHILD;
                    667:                }
                    668:        }
                    669:
1.54      kristaps  670:        if (m && m->first == n)
                    671:                m->first = NULL;
1.23      kristaps  672: }

CVSweb