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Annotation of mandoc/man.c, Revision 1.121

1.121   ! schwarze    1: /*     $Id: man.c,v 1.120 2013/10/17 20:54:58 schwarze Exp $ */
1.1       kristaps    2: /*
1.102     schwarze    3:  * Copyright (c) 2008, 2009, 2010, 2011 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:
1.105     kristaps   29: #include "man.h"
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",
1.92      kristaps   40:        "RI",           "na",           "sp",           "nf",
                     41:        "fi",           "RE",           "RS",           "DT",
                     42:        "UC",           "PD",           "AT",           "in",
1.120     schwarze   43:        "ft",           "OP",           "EX",           "EE",
                     44:        "UR",           "UE"
1.1       kristaps   45:        };
                     46:
                     47: const  char * const *man_macronames = __man_macronames;
                     48:
1.97      kristaps   49: static struct man_node *man_node_alloc(struct man *, int, int,
1.53      kristaps   50:                                enum man_type, enum mant);
1.1       kristaps   51: static int              man_node_append(struct man *,
                     52:                                struct man_node *);
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 *
1.119     schwarze   64: man_node(const struct man *man)
1.1       kristaps   65: {
                     66:
1.119     schwarze   67:        assert( ! (MAN_HALT & man->flags));
                     68:        return(man->first);
1.1       kristaps   69: }
                     70:
                     71:
                     72: const struct man_meta *
1.119     schwarze   73: man_meta(const struct man *man)
1.1       kristaps   74: {
                     75:
1.119     schwarze   76:        assert( ! (MAN_HALT & man->flags));
                     77:        return(&man->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 *
1.108     kristaps  100: man_alloc(struct roff *roff, struct mparse *parse)
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();
1.104     kristaps  107:        p->parse = parse;
1.108     kristaps  108:        p->roff = roff;
1.45      kristaps  109:
                    110:        man_alloc1(p);
1.1       kristaps  111:        return(p);
                    112: }
                    113:
                    114:
                    115: int
1.119     schwarze  116: man_endparse(struct man *man)
1.1       kristaps  117: {
                    118:
1.119     schwarze  119:        assert( ! (MAN_HALT & man->flags));
                    120:        if (man_macroend(man))
1.3       kristaps  121:                return(1);
1.119     schwarze  122:        man->flags |= MAN_HALT;
1.3       kristaps  123:        return(0);
1.1       kristaps  124: }
                    125:
                    126:
                    127: int
1.119     schwarze  128: man_parseln(struct man *man, int ln, char *buf, int offs)
1.1       kristaps  129: {
                    130:
1.119     schwarze  131:        man->flags |= MAN_NEWLINE;
1.97      kristaps  132:
1.119     schwarze  133:        assert( ! (MAN_HALT & man->flags));
1.107     kristaps  134:
1.119     schwarze  135:        return (roff_getcontrol(man->roff, buf, &offs) ?
                    136:                        man_pmacro(man, ln, buf, offs) :
                    137:                        man_ptext(man, 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);
1.102     schwarze  151:        if (man->meta.date)
                    152:                free(man->meta.date);
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
1.119     schwarze  161: man_alloc1(struct man *man)
1.2       kristaps  162: {
                    163:
1.119     schwarze  164:        memset(&man->meta, 0, sizeof(struct man_meta));
                    165:        man->flags = 0;
                    166:        man->last = mandoc_calloc(1, sizeof(struct man_node));
                    167:        man->first = man->last;
                    168:        man->last->type = MAN_ROOT;
                    169:        man->last->tok = MAN_MAX;
                    170:        man->next = MAN_NEXT_CHILD;
1.2       kristaps  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;
1.106     kristaps  208:        case (MAN_TAIL):
                    209:                assert(MAN_BLOCK == p->parent->type);
                    210:                p->parent->tail = p;
                    211:                break;
1.29      kristaps  212:        case (MAN_BODY):
                    213:                assert(MAN_BLOCK == p->parent->type);
                    214:                p->parent->body = p;
                    215:                break;
                    216:        default:
                    217:                break;
                    218:        }
                    219:
1.2       kristaps  220:        man->last = p;
                    221:
1.1       kristaps  222:        switch (p->type) {
1.94      kristaps  223:        case (MAN_TBL):
                    224:                /* FALLTHROUGH */
1.2       kristaps  225:        case (MAN_TEXT):
                    226:                if ( ! man_valid_post(man))
                    227:                        return(0);
1.1       kristaps  228:                break;
                    229:        default:
                    230:                break;
                    231:        }
                    232:
                    233:        return(1);
                    234: }
                    235:
                    236:
                    237: static struct man_node *
1.119     schwarze  238: man_node_alloc(struct man *man, int line, int pos,
1.97      kristaps  239:                enum man_type type, enum mant tok)
1.1       kristaps  240: {
                    241:        struct man_node *p;
                    242:
1.45      kristaps  243:        p = mandoc_calloc(1, sizeof(struct man_node));
1.1       kristaps  244:        p->line = line;
                    245:        p->pos = pos;
                    246:        p->type = type;
1.16      kristaps  247:        p->tok = tok;
1.97      kristaps  248:
1.119     schwarze  249:        if (MAN_NEWLINE & man->flags)
1.97      kristaps  250:                p->flags |= MAN_LINE;
1.119     schwarze  251:        man->flags &= ~MAN_NEWLINE;
1.1       kristaps  252:        return(p);
                    253: }
                    254:
                    255:
                    256: int
1.119     schwarze  257: man_elem_alloc(struct man *man, int line, int pos, enum mant tok)
1.1       kristaps  258: {
                    259:        struct man_node *p;
                    260:
1.119     schwarze  261:        p = man_node_alloc(man, line, pos, MAN_ELEM, tok);
                    262:        if ( ! man_node_append(man, p))
1.106     kristaps  263:                return(0);
1.119     schwarze  264:        man->next = MAN_NEXT_CHILD;
1.106     kristaps  265:        return(1);
                    266: }
                    267:
                    268:
                    269: int
1.119     schwarze  270: man_tail_alloc(struct man *man, int line, int pos, enum mant tok)
1.106     kristaps  271: {
                    272:        struct man_node *p;
                    273:
1.119     schwarze  274:        p = man_node_alloc(man, line, pos, MAN_TAIL, tok);
                    275:        if ( ! man_node_append(man, p))
1.30      kristaps  276:                return(0);
1.119     schwarze  277:        man->next = MAN_NEXT_CHILD;
1.30      kristaps  278:        return(1);
1.1       kristaps  279: }
                    280:
                    281:
                    282: int
1.119     schwarze  283: man_head_alloc(struct man *man, int line, int pos, enum mant tok)
1.29      kristaps  284: {
                    285:        struct man_node *p;
                    286:
1.119     schwarze  287:        p = man_node_alloc(man, line, pos, MAN_HEAD, tok);
                    288:        if ( ! man_node_append(man, p))
1.29      kristaps  289:                return(0);
1.119     schwarze  290:        man->next = MAN_NEXT_CHILD;
1.29      kristaps  291:        return(1);
                    292: }
                    293:
                    294:
                    295: int
1.119     schwarze  296: man_body_alloc(struct man *man, int line, int pos, enum mant tok)
1.29      kristaps  297: {
                    298:        struct man_node *p;
                    299:
1.119     schwarze  300:        p = man_node_alloc(man, line, pos, MAN_BODY, tok);
                    301:        if ( ! man_node_append(man, p))
1.29      kristaps  302:                return(0);
1.119     schwarze  303:        man->next = MAN_NEXT_CHILD;
1.29      kristaps  304:        return(1);
                    305: }
                    306:
                    307:
                    308: int
1.119     schwarze  309: man_block_alloc(struct man *man, int line, int pos, enum mant tok)
1.29      kristaps  310: {
                    311:        struct man_node *p;
                    312:
1.119     schwarze  313:        p = man_node_alloc(man, line, pos, MAN_BLOCK, tok);
                    314:        if ( ! man_node_append(man, p))
1.29      kristaps  315:                return(0);
1.119     schwarze  316:        man->next = MAN_NEXT_CHILD;
1.29      kristaps  317:        return(1);
                    318: }
                    319:
1.61      kristaps  320: int
1.119     schwarze  321: man_word_alloc(struct man *man, int line, int pos, const char *word)
1.1       kristaps  322: {
1.31      kristaps  323:        struct man_node *n;
1.1       kristaps  324:
1.119     schwarze  325:        n = man_node_alloc(man, line, pos, MAN_TEXT, MAN_MAX);
                    326:        n->string = roff_strdup(man->roff, word);
1.31      kristaps  327:
1.119     schwarze  328:        if ( ! man_node_append(man, n))
1.30      kristaps  329:                return(0);
1.61      kristaps  330:
1.119     schwarze  331:        man->next = MAN_NEXT_SIBLING;
1.30      kristaps  332:        return(1);
1.1       kristaps  333: }
                    334:
                    335:
1.54      kristaps  336: /*
                    337:  * Free all of the resources held by a node.  This does NOT unlink a
                    338:  * node from its context; for that, see man_node_unlink().
                    339:  */
                    340: static void
1.1       kristaps  341: man_node_free(struct man_node *p)
                    342: {
                    343:
                    344:        if (p->string)
                    345:                free(p->string);
                    346:        free(p);
                    347: }
                    348:
                    349:
                    350: void
1.119     schwarze  351: man_node_delete(struct man *man, struct man_node *p)
1.1       kristaps  352: {
                    353:
1.54      kristaps  354:        while (p->child)
1.119     schwarze  355:                man_node_delete(man, p->child);
1.54      kristaps  356:
1.119     schwarze  357:        man_node_unlink(man, p);
1.1       kristaps  358:        man_node_free(p);
                    359: }
                    360:
1.101     kristaps  361: int
1.119     schwarze  362: man_addeqn(struct man *man, const struct eqn *ep)
1.101     kristaps  363: {
                    364:        struct man_node *n;
                    365:
1.119     schwarze  366:        assert( ! (MAN_HALT & man->flags));
1.101     kristaps  367:
1.119     schwarze  368:        n = man_node_alloc(man, ep->ln, ep->pos, MAN_EQN, MAN_MAX);
1.101     kristaps  369:        n->eqn = ep;
                    370:
1.119     schwarze  371:        if ( ! man_node_append(man, n))
1.101     kristaps  372:                return(0);
                    373:
1.119     schwarze  374:        man->next = MAN_NEXT_SIBLING;
                    375:        return(man_descope(man, ep->ln, ep->pos));
1.101     kristaps  376: }
1.1       kristaps  377:
1.94      kristaps  378: int
1.119     schwarze  379: man_addspan(struct man *man, const struct tbl_span *sp)
1.94      kristaps  380: {
1.100     kristaps  381:        struct man_node *n;
1.94      kristaps  382:
1.119     schwarze  383:        assert( ! (MAN_HALT & man->flags));
1.100     kristaps  384:
1.119     schwarze  385:        n = man_node_alloc(man, sp->line, 0, MAN_TBL, MAN_MAX);
1.100     kristaps  386:        n->span = sp;
                    387:
1.119     schwarze  388:        if ( ! man_node_append(man, n))
1.94      kristaps  389:                return(0);
1.100     kristaps  390:
1.119     schwarze  391:        man->next = MAN_NEXT_SIBLING;
                    392:        return(man_descope(man, sp->line, 0));
1.94      kristaps  393: }
                    394:
                    395: static int
1.119     schwarze  396: man_descope(struct man *man, int line, int offs)
1.94      kristaps  397: {
                    398:        /*
                    399:         * Co-ordinate what happens with having a next-line scope open:
                    400:         * first close out the element scope (if applicable), then close
                    401:         * out the block scope (also if applicable).
                    402:         */
                    403:
1.119     schwarze  404:        if (MAN_ELINE & man->flags) {
                    405:                man->flags &= ~MAN_ELINE;
                    406:                if ( ! man_unscope(man, man->last->parent, MANDOCERR_MAX))
1.94      kristaps  407:                        return(0);
                    408:        }
                    409:
1.119     schwarze  410:        if ( ! (MAN_BLINE & man->flags))
1.94      kristaps  411:                return(1);
1.119     schwarze  412:        man->flags &= ~MAN_BLINE;
1.94      kristaps  413:
1.119     schwarze  414:        if ( ! man_unscope(man, man->last->parent, MANDOCERR_MAX))
1.94      kristaps  415:                return(0);
1.119     schwarze  416:        return(man_body_alloc(man, line, offs, man->last->tok));
1.94      kristaps  417: }
                    418:
1.1       kristaps  419: static int
1.119     schwarze  420: man_ptext(struct man *man, int line, char *buf, int offs)
1.1       kristaps  421: {
1.61      kristaps  422:        int              i;
1.60      kristaps  423:
1.35      kristaps  424:        /* Literal free-form text whitespace is preserved. */
                    425:
1.119     schwarze  426:        if (MAN_LITERAL & man->flags) {
                    427:                if ( ! man_word_alloc(man, line, offs, buf + offs))
1.35      kristaps  428:                        return(0);
1.119     schwarze  429:                return(man_descope(man, line, offs));
1.35      kristaps  430:        }
                    431:
1.72      kristaps  432:        for (i = offs; ' ' == buf[i]; i++)
1.31      kristaps  433:                /* Skip leading whitespace. */ ;
1.48      kristaps  434:
1.121   ! schwarze  435:        /*
        !           436:         * Blank lines are ignored right after headings
        !           437:         * but add a single vertical space elsewhere.
        !           438:         */
        !           439:
1.49      kristaps  440:        if ('\0' == buf[i]) {
1.61      kristaps  441:                /* Allocate a blank entry. */
1.121   ! schwarze  442:                if (MAN_SH != man->last->tok &&
        !           443:                    MAN_SS != man->last->tok) {
        !           444:                        if ( ! man_elem_alloc(man, line, offs, MAN_sp))
        !           445:                                return(0);
        !           446:                        man->next = MAN_NEXT_SIBLING;
        !           447:                }
1.118     schwarze  448:                return(1);
1.31      kristaps  449:        }
                    450:
1.63      kristaps  451:        /*
                    452:         * Warn if the last un-escaped character is whitespace. Then
                    453:         * strip away the remaining spaces (tabs stay!).
                    454:         */
1.29      kristaps  455:
1.61      kristaps  456:        i = (int)strlen(buf);
                    457:        assert(i);
1.49      kristaps  458:
1.63      kristaps  459:        if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
1.64      kristaps  460:                if (i > 1 && '\\' != buf[i - 2])
1.119     schwarze  461:                        man_pmsg(man, line, i - 1, MANDOCERR_EOLNSPACE);
1.63      kristaps  462:
                    463:                for (--i; i && ' ' == buf[i]; i--)
                    464:                        /* Spin back to non-space. */ ;
                    465:
                    466:                /* Jump ahead of escaped whitespace. */
                    467:                i += '\\' == buf[i] ? 2 : 1;
                    468:
                    469:                buf[i] = '\0';
                    470:        }
1.49      kristaps  471:
1.119     schwarze  472:        if ( ! man_word_alloc(man, line, offs, buf + offs))
1.1       kristaps  473:                return(0);
1.65      kristaps  474:
                    475:        /*
                    476:         * End-of-sentence check.  If the last character is an unescaped
                    477:         * EOS character, then flag the node as being the end of a
                    478:         * sentence.  The front-end will know how to interpret this.
                    479:         */
1.67      kristaps  480:
1.65      kristaps  481:        assert(i);
1.83      schwarze  482:        if (mandoc_eos(buf, (size_t)i, 0))
1.119     schwarze  483:                man->last->flags |= MAN_EOS;
1.31      kristaps  484:
1.119     schwarze  485:        return(man_descope(man, line, offs));
1.1       kristaps  486: }
                    487:
1.96      kristaps  488: static int
1.119     schwarze  489: man_pmacro(struct man *man, int ln, char *buf, int offs)
1.1       kristaps  490: {
1.107     kristaps  491:        int              i, ppos;
1.53      kristaps  492:        enum mant        tok;
1.34      kristaps  493:        char             mac[5];
                    494:        struct man_node *n;
1.1       kristaps  495:
1.107     kristaps  496:        if ('"' == buf[offs]) {
1.119     schwarze  497:                man_pmsg(man, ln, offs, MANDOCERR_BADCOMMENT);
1.107     kristaps  498:                return(1);
                    499:        } else if ('\0' == buf[offs])
1.46      kristaps  500:                return(1);
1.1       kristaps  501:
1.107     kristaps  502:        ppos = offs;
1.9       kristaps  503:
1.56      kristaps  504:        /*
1.107     kristaps  505:         * Copy the first word into a nil-terminated buffer.
                    506:         * Stop copying when a tab, space, or eoln is encountered.
1.56      kristaps  507:         */
1.62      kristaps  508:
1.107     kristaps  509:        i = 0;
                    510:        while (i < 4 && '\0' != buf[offs] &&
                    511:                        ' ' != buf[offs] && '\t' != buf[offs])
                    512:                mac[i++] = buf[offs++];
1.10      kristaps  513:
1.107     kristaps  514:        mac[i] = '\0';
1.1       kristaps  515:
1.107     kristaps  516:        tok = (i > 0 && i < 4) ? man_hash_find(mac) : MAN_MAX;
1.1       kristaps  517:
1.87      schwarze  518:        if (MAN_MAX == tok) {
1.119     schwarze  519:                mandoc_vmsg(MANDOCERR_MACRO, man->parse, ln,
1.104     kristaps  520:                                ppos, "%s", buf + ppos - 1);
1.12      kristaps  521:                return(1);
1.1       kristaps  522:        }
                    523:
                    524:        /* The macro is sane.  Jump to the next word. */
                    525:
1.107     kristaps  526:        while (buf[offs] && ' ' == buf[offs])
                    527:                offs++;
1.1       kristaps  528:
1.62      kristaps  529:        /*
                    530:         * Trailing whitespace.  Note that tabs are allowed to be passed
                    531:         * into the parser as "text", so we only warn about spaces here.
                    532:         */
1.48      kristaps  533:
1.107     kristaps  534:        if ('\0' == buf[offs] && ' ' == buf[offs - 1])
1.119     schwarze  535:                man_pmsg(man, ln, offs - 1, MANDOCERR_EOLNSPACE);
1.48      kristaps  536:
1.50      kristaps  537:        /*
1.90      kristaps  538:         * Remove prior ELINE macro, as it's being clobbered by a new
1.51      kristaps  539:         * macro.  Note that NSCOPED macros do not close out ELINE
                    540:         * macros---they don't print text---so we let those slip by.
1.50      kristaps  541:         */
1.34      kristaps  542:
1.53      kristaps  543:        if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.119     schwarze  544:                        man->flags & MAN_ELINE) {
                    545:                n = man->last;
1.90      kristaps  546:                assert(MAN_TEXT != n->type);
1.51      kristaps  547:
1.90      kristaps  548:                /* Remove repeated NSCOPED macros causing ELINE. */
1.51      kristaps  549:
1.90      kristaps  550:                if (MAN_NSCOPED & man_macros[n->tok].flags)
                    551:                        n = n->parent;
1.51      kristaps  552:
1.119     schwarze  553:                mandoc_vmsg(MANDOCERR_LINESCOPE, man->parse, n->line,
1.113     schwarze  554:                    n->pos, "%s breaks %s", man_macronames[tok],
                    555:                    man_macronames[n->tok]);
1.34      kristaps  556:
1.119     schwarze  557:                man_node_delete(man, n);
                    558:                man->flags &= ~MAN_ELINE;
1.113     schwarze  559:        }
                    560:
                    561:        /*
                    562:         * Remove prior BLINE macro that is being clobbered.
                    563:         */
1.119     schwarze  564:        if ((man->flags & MAN_BLINE) &&
1.113     schwarze  565:            (MAN_BSCOPE & man_macros[tok].flags)) {
1.119     schwarze  566:                n = man->last;
1.114     joerg     567:
                    568:                /* Might be a text node like 8 in
                    569:                 * .TP 8
                    570:                 * .SH foo
                    571:                 */
                    572:                if (MAN_TEXT == n->type)
                    573:                        n = n->parent;
1.113     schwarze  574:
                    575:                /* Remove element that didn't end BLINE, if any. */
                    576:                if ( ! (MAN_BSCOPE & man_macros[n->tok].flags))
                    577:                        n = n->parent;
                    578:
                    579:                assert(MAN_HEAD == n->type);
                    580:                n = n->parent;
                    581:                assert(MAN_BLOCK == n->type);
                    582:                assert(MAN_SCOPED & man_macros[n->tok].flags);
                    583:
1.119     schwarze  584:                mandoc_vmsg(MANDOCERR_LINESCOPE, man->parse, n->line,
1.113     schwarze  585:                    n->pos, "%s breaks %s", man_macronames[tok],
                    586:                    man_macronames[n->tok]);
                    587:
1.119     schwarze  588:                man_node_delete(man, n);
                    589:                man->flags &= ~MAN_BLINE;
1.34      kristaps  590:        }
                    591:
1.59      kristaps  592:        /*
                    593:         * Save the fact that we're in the next-line for a block.  In
                    594:         * this way, embedded roff instructions can "remember" state
                    595:         * when they exit.
                    596:         */
                    597:
1.119     schwarze  598:        if (MAN_BLINE & man->flags)
                    599:                man->flags |= MAN_BPLINE;
1.59      kristaps  600:
                    601:        /* Call to handler... */
1.1       kristaps  602:
1.53      kristaps  603:        assert(man_macros[tok].fp);
1.119     schwarze  604:        if ( ! (*man_macros[tok].fp)(man, tok, ln, ppos, &offs, buf))
1.1       kristaps  605:                goto err;
                    606:
1.50      kristaps  607:        /*
                    608:         * We weren't in a block-line scope when entering the
                    609:         * above-parsed macro, so return.
                    610:         */
                    611:
1.119     schwarze  612:        if ( ! (MAN_BPLINE & man->flags)) {
                    613:                man->flags &= ~MAN_ILINE;
1.29      kristaps  614:                return(1);
1.50      kristaps  615:        }
1.119     schwarze  616:        man->flags &= ~MAN_BPLINE;
1.50      kristaps  617:
                    618:        /*
                    619:         * If we're in a block scope, then allow this macro to slip by
                    620:         * without closing scope around it.
                    621:         */
                    622:
1.119     schwarze  623:        if (MAN_ILINE & man->flags) {
                    624:                man->flags &= ~MAN_ILINE;
1.50      kristaps  625:                return(1);
                    626:        }
1.29      kristaps  627:
                    628:        /*
                    629:         * If we've opened a new next-line element scope, then return
                    630:         * now, as the next line will close out the block scope.
                    631:         */
                    632:
1.119     schwarze  633:        if (MAN_ELINE & man->flags)
1.29      kristaps  634:                return(1);
                    635:
                    636:        /* Close out the block scope opened in the prior line.  */
1.11      kristaps  637:
1.119     schwarze  638:        assert(MAN_BLINE & man->flags);
                    639:        man->flags &= ~MAN_BLINE;
1.11      kristaps  640:
1.119     schwarze  641:        if ( ! man_unscope(man, man->last->parent, MANDOCERR_MAX))
1.29      kristaps  642:                return(0);
1.119     schwarze  643:        return(man_body_alloc(man, ln, ppos, man->last->tok));
1.1       kristaps  644:
                    645: err:   /* Error out. */
                    646:
1.119     schwarze  647:        man->flags |= MAN_HALT;
1.1       kristaps  648:        return(0);
                    649: }
1.51      kristaps  650:
1.54      kristaps  651: /*
1.119     schwarze  652:  * Unlink a node from its context.  If "man" is provided, the last parse
1.54      kristaps  653:  * point will also be adjusted accordingly.
                    654:  */
                    655: static void
1.119     schwarze  656: man_node_unlink(struct man *man, struct man_node *n)
1.51      kristaps  657: {
                    658:
1.54      kristaps  659:        /* Adjust siblings. */
                    660:
                    661:        if (n->prev)
1.51      kristaps  662:                n->prev->next = n->next;
1.54      kristaps  663:        if (n->next)
                    664:                n->next->prev = n->prev;
                    665:
                    666:        /* Adjust parent. */
                    667:
                    668:        if (n->parent) {
                    669:                n->parent->nchild--;
                    670:                if (n->parent->child == n)
                    671:                        n->parent->child = n->prev ? n->prev : n->next;
                    672:        }
                    673:
                    674:        /* Adjust parse point, if applicable. */
                    675:
1.119     schwarze  676:        if (man && man->last == n) {
1.54      kristaps  677:                /*XXX: this can occur when bailing from validation. */
                    678:                /*assert(NULL == n->next);*/
                    679:                if (n->prev) {
1.119     schwarze  680:                        man->last = n->prev;
                    681:                        man->next = MAN_NEXT_SIBLING;
1.54      kristaps  682:                } else {
1.119     schwarze  683:                        man->last = n->parent;
                    684:                        man->next = MAN_NEXT_CHILD;
1.51      kristaps  685:                }
                    686:        }
                    687:
1.119     schwarze  688:        if (man && man->first == n)
                    689:                man->first = NULL;
1.112     kristaps  690: }
                    691:
                    692: const struct mparse *
1.119     schwarze  693: man_mparse(const struct man *man)
1.112     kristaps  694: {
                    695:
1.119     schwarze  696:        assert(man && man->parse);
                    697:        return(man->parse);
1.23      kristaps  698: }

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