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Annotation of mandoc/man.c, Revision 1.140

1.140   ! schwarze    1: /*     $Id: man.c,v 1.139 2014/09/06 23:24:32 schwarze Exp $ */
1.1       kristaps    2: /*
1.102     schwarze    3:  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.123     schwarze    4:  * Copyright (c) 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
1.124     schwarze    5:  * Copyright (c) 2011 Joerg Sonnenberger <joerg@netbsd.org>
1.1       kristaps    6:  *
                      7:  * Permission to use, copy, modify, and distribute this software for any
1.18      kristaps    8:  * purpose with or without fee is hereby granted, provided that the above
                      9:  * copyright notice and this permission notice appear in all copies.
1.1       kristaps   10:  *
1.18      kristaps   11:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     12:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     13:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     14:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     15:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     16:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     17:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1       kristaps   18:  */
1.47      kristaps   19: #include "config.h"
                     20:
1.41      kristaps   21: #include <sys/types.h>
                     22:
1.1       kristaps   23: #include <assert.h>
1.126     schwarze   24: #include <ctype.h>
1.1       kristaps   25: #include <stdarg.h>
                     26: #include <stdlib.h>
                     27: #include <stdio.h>
                     28: #include <string.h>
                     29:
1.105     kristaps   30: #include "man.h"
1.74      kristaps   31: #include "mandoc.h"
1.125     schwarze   32: #include "mandoc_aux.h"
1.1       kristaps   33: #include "libman.h"
1.45      kristaps   34: #include "libmandoc.h"
1.1       kristaps   35:
1.129     schwarze   36: const  char *const __man_macronames[MAN_MAX] = {
1.21      kristaps   37:        "br",           "TH",           "SH",           "SS",
1.129     schwarze   38:        "TP",           "LP",           "PP",           "P",
1.1       kristaps   39:        "IP",           "HP",           "SM",           "SB",
                     40:        "BI",           "IB",           "BR",           "RB",
1.11      kristaps   41:        "R",            "B",            "I",            "IR",
1.92      kristaps   42:        "RI",           "na",           "sp",           "nf",
                     43:        "fi",           "RE",           "RS",           "DT",
                     44:        "UC",           "PD",           "AT",           "in",
1.120     schwarze   45:        "ft",           "OP",           "EX",           "EE",
1.128     schwarze   46:        "UR",           "UE",           "ll"
1.1       kristaps   47:        };
                     48:
                     49: const  char * const *man_macronames = __man_macronames;
                     50:
1.129     schwarze   51: static struct man_node *man_node_alloc(struct man *, int, int,
1.53      kristaps   52:                                enum man_type, enum mant);
1.129     schwarze   53: static int              man_node_append(struct man *,
1.1       kristaps   54:                                struct man_node *);
1.54      kristaps   55: static void             man_node_free(struct man_node *);
1.129     schwarze   56: static void             man_node_unlink(struct man *,
1.54      kristaps   57:                                struct man_node *);
1.72      kristaps   58: static int              man_ptext(struct man *, int, char *, int);
1.79      kristaps   59: static int              man_pmacro(struct man *, int, char *, int);
1.2       kristaps   60: static void             man_free1(struct man *);
1.45      kristaps   61: static void             man_alloc1(struct man *);
1.94      kristaps   62: static int              man_descope(struct man *, int, int);
1.1       kristaps   63:
                     64:
                     65: const struct man_node *
1.119     schwarze   66: man_node(const struct man *man)
1.1       kristaps   67: {
                     68:
1.119     schwarze   69:        return(man->first);
1.1       kristaps   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:        return(&man->meta);
1.1       kristaps   77: }
                     78:
1.45      kristaps   79: void
1.1       kristaps   80: man_reset(struct man *man)
                     81: {
                     82:
1.2       kristaps   83:        man_free1(man);
1.45      kristaps   84:        man_alloc1(man);
1.1       kristaps   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: struct man *
1.123     schwarze   96: man_alloc(struct roff *roff, struct mparse *parse, int quick)
1.1       kristaps   97: {
                     98:        struct man      *p;
                     99:
1.45      kristaps  100:        p = mandoc_calloc(1, sizeof(struct man));
1.2       kristaps  101:
1.40      kristaps  102:        man_hash_init();
1.104     kristaps  103:        p->parse = parse;
1.123     schwarze  104:        p->quick = quick;
1.108     kristaps  105:        p->roff = roff;
1.45      kristaps  106:
                    107:        man_alloc1(p);
1.1       kristaps  108:        return(p);
                    109: }
                    110:
                    111: int
1.119     schwarze  112: man_endparse(struct man *man)
1.1       kristaps  113: {
                    114:
1.135     schwarze  115:        return(man_macroend(man));
1.1       kristaps  116: }
                    117:
                    118: int
1.119     schwarze  119: man_parseln(struct man *man, int ln, char *buf, int offs)
1.1       kristaps  120: {
                    121:
1.119     schwarze  122:        man->flags |= MAN_NEWLINE;
1.97      kristaps  123:
1.119     schwarze  124:        return (roff_getcontrol(man->roff, buf, &offs) ?
1.129     schwarze  125:            man_pmacro(man, ln, buf, offs) :
                    126:            man_ptext(man, ln, buf, offs));
1.1       kristaps  127: }
                    128:
1.2       kristaps  129: static void
                    130: man_free1(struct man *man)
                    131: {
                    132:
                    133:        if (man->first)
1.54      kristaps  134:                man_node_delete(man, man->first);
1.2       kristaps  135:        if (man->meta.title)
                    136:                free(man->meta.title);
1.6       kristaps  137:        if (man->meta.source)
                    138:                free(man->meta.source);
1.102     schwarze  139:        if (man->meta.date)
                    140:                free(man->meta.date);
1.2       kristaps  141:        if (man->meta.vol)
                    142:                free(man->meta.vol);
1.68      kristaps  143:        if (man->meta.msec)
                    144:                free(man->meta.msec);
1.2       kristaps  145: }
                    146:
1.45      kristaps  147: static void
1.119     schwarze  148: man_alloc1(struct man *man)
1.2       kristaps  149: {
                    150:
1.119     schwarze  151:        memset(&man->meta, 0, sizeof(struct man_meta));
                    152:        man->flags = 0;
                    153:        man->last = mandoc_calloc(1, sizeof(struct man_node));
                    154:        man->first = man->last;
                    155:        man->last->type = MAN_ROOT;
                    156:        man->last->tok = MAN_MAX;
                    157:        man->next = MAN_NEXT_CHILD;
1.2       kristaps  158: }
                    159:
                    160:
1.1       kristaps  161: static int
                    162: man_node_append(struct man *man, struct man_node *p)
                    163: {
                    164:
                    165:        assert(man->last);
                    166:        assert(man->first);
                    167:        assert(MAN_ROOT != p->type);
                    168:
                    169:        switch (man->next) {
1.129     schwarze  170:        case MAN_NEXT_SIBLING:
1.1       kristaps  171:                man->last->next = p;
                    172:                p->prev = man->last;
                    173:                p->parent = man->last->parent;
                    174:                break;
1.129     schwarze  175:        case MAN_NEXT_CHILD:
1.1       kristaps  176:                man->last->child = p;
                    177:                p->parent = man->last;
                    178:                break;
                    179:        default:
                    180:                abort();
                    181:                /* NOTREACHED */
                    182:        }
1.129     schwarze  183:
1.54      kristaps  184:        assert(p->parent);
1.22      kristaps  185:        p->parent->nchild++;
1.1       kristaps  186:
1.29      kristaps  187:        switch (p->type) {
1.137     schwarze  188:        case MAN_BLOCK:
                    189:                if (p->tok == MAN_SH || p->tok == MAN_SS)
                    190:                        man->flags &= ~MAN_LITERAL;
                    191:                break;
1.129     schwarze  192:        case MAN_HEAD:
1.29      kristaps  193:                assert(MAN_BLOCK == p->parent->type);
                    194:                p->parent->head = p;
                    195:                break;
1.129     schwarze  196:        case MAN_TAIL:
1.106     kristaps  197:                assert(MAN_BLOCK == p->parent->type);
                    198:                p->parent->tail = p;
                    199:                break;
1.129     schwarze  200:        case MAN_BODY:
1.29      kristaps  201:                assert(MAN_BLOCK == p->parent->type);
                    202:                p->parent->body = p;
                    203:                break;
                    204:        default:
                    205:                break;
                    206:        }
                    207:
1.2       kristaps  208:        man->last = p;
                    209:
1.1       kristaps  210:        switch (p->type) {
1.129     schwarze  211:        case MAN_TBL:
1.94      kristaps  212:                /* FALLTHROUGH */
1.129     schwarze  213:        case MAN_TEXT:
1.2       kristaps  214:                if ( ! man_valid_post(man))
                    215:                        return(0);
1.1       kristaps  216:                break;
                    217:        default:
                    218:                break;
                    219:        }
                    220:
                    221:        return(1);
                    222: }
                    223:
                    224: static struct man_node *
1.129     schwarze  225: man_node_alloc(struct man *man, int line, int pos,
1.97      kristaps  226:                enum man_type type, enum mant tok)
1.1       kristaps  227: {
                    228:        struct man_node *p;
                    229:
1.45      kristaps  230:        p = mandoc_calloc(1, sizeof(struct man_node));
1.1       kristaps  231:        p->line = line;
                    232:        p->pos = pos;
                    233:        p->type = type;
1.16      kristaps  234:        p->tok = tok;
1.97      kristaps  235:
1.119     schwarze  236:        if (MAN_NEWLINE & man->flags)
1.97      kristaps  237:                p->flags |= MAN_LINE;
1.119     schwarze  238:        man->flags &= ~MAN_NEWLINE;
1.1       kristaps  239:        return(p);
                    240: }
                    241:
                    242: int
1.119     schwarze  243: man_elem_alloc(struct man *man, int line, int pos, enum mant tok)
1.1       kristaps  244: {
                    245:        struct man_node *p;
                    246:
1.119     schwarze  247:        p = man_node_alloc(man, line, pos, MAN_ELEM, tok);
                    248:        if ( ! man_node_append(man, p))
1.106     kristaps  249:                return(0);
1.119     schwarze  250:        man->next = MAN_NEXT_CHILD;
1.106     kristaps  251:        return(1);
                    252: }
                    253:
                    254: int
1.119     schwarze  255: man_tail_alloc(struct man *man, int line, int pos, enum mant tok)
1.106     kristaps  256: {
                    257:        struct man_node *p;
                    258:
1.119     schwarze  259:        p = man_node_alloc(man, line, pos, MAN_TAIL, tok);
                    260:        if ( ! man_node_append(man, p))
1.30      kristaps  261:                return(0);
1.119     schwarze  262:        man->next = MAN_NEXT_CHILD;
1.30      kristaps  263:        return(1);
1.1       kristaps  264: }
                    265:
                    266: int
1.119     schwarze  267: man_head_alloc(struct man *man, int line, int pos, enum mant tok)
1.29      kristaps  268: {
                    269:        struct man_node *p;
                    270:
1.119     schwarze  271:        p = man_node_alloc(man, line, pos, MAN_HEAD, tok);
                    272:        if ( ! man_node_append(man, p))
1.29      kristaps  273:                return(0);
1.119     schwarze  274:        man->next = MAN_NEXT_CHILD;
1.29      kristaps  275:        return(1);
                    276: }
                    277:
                    278: int
1.119     schwarze  279: man_body_alloc(struct man *man, int line, int pos, enum mant tok)
1.29      kristaps  280: {
                    281:        struct man_node *p;
                    282:
1.119     schwarze  283:        p = man_node_alloc(man, line, pos, MAN_BODY, tok);
                    284:        if ( ! man_node_append(man, p))
1.29      kristaps  285:                return(0);
1.119     schwarze  286:        man->next = MAN_NEXT_CHILD;
1.29      kristaps  287:        return(1);
                    288: }
                    289:
                    290: int
1.119     schwarze  291: man_block_alloc(struct man *man, int line, int pos, enum mant tok)
1.29      kristaps  292: {
                    293:        struct man_node *p;
                    294:
1.119     schwarze  295:        p = man_node_alloc(man, line, pos, MAN_BLOCK, tok);
                    296:        if ( ! man_node_append(man, p))
1.29      kristaps  297:                return(0);
1.119     schwarze  298:        man->next = MAN_NEXT_CHILD;
1.29      kristaps  299:        return(1);
                    300: }
                    301:
1.61      kristaps  302: int
1.119     schwarze  303: man_word_alloc(struct man *man, int line, int pos, const char *word)
1.1       kristaps  304: {
1.31      kristaps  305:        struct man_node *n;
1.1       kristaps  306:
1.119     schwarze  307:        n = man_node_alloc(man, line, pos, MAN_TEXT, MAN_MAX);
                    308:        n->string = roff_strdup(man->roff, word);
1.31      kristaps  309:
1.119     schwarze  310:        if ( ! man_node_append(man, n))
1.30      kristaps  311:                return(0);
1.61      kristaps  312:
1.119     schwarze  313:        man->next = MAN_NEXT_SIBLING;
1.30      kristaps  314:        return(1);
1.1       kristaps  315: }
                    316:
1.54      kristaps  317: /*
                    318:  * Free all of the resources held by a node.  This does NOT unlink a
                    319:  * node from its context; for that, see man_node_unlink().
                    320:  */
                    321: static void
1.1       kristaps  322: man_node_free(struct man_node *p)
                    323: {
                    324:
                    325:        if (p->string)
                    326:                free(p->string);
                    327:        free(p);
                    328: }
                    329:
                    330: void
1.119     schwarze  331: man_node_delete(struct man *man, struct man_node *p)
1.1       kristaps  332: {
                    333:
1.54      kristaps  334:        while (p->child)
1.119     schwarze  335:                man_node_delete(man, p->child);
1.54      kristaps  336:
1.119     schwarze  337:        man_node_unlink(man, p);
1.1       kristaps  338:        man_node_free(p);
                    339: }
                    340:
1.101     kristaps  341: int
1.119     schwarze  342: man_addeqn(struct man *man, const struct eqn *ep)
1.101     kristaps  343: {
                    344:        struct man_node *n;
                    345:
1.119     schwarze  346:        n = man_node_alloc(man, ep->ln, ep->pos, MAN_EQN, MAN_MAX);
1.101     kristaps  347:        n->eqn = ep;
1.140   ! schwarze  348:        if (ep->ln > man->last->line)
        !           349:                n->flags |= MAN_LINE;
1.101     kristaps  350:
1.119     schwarze  351:        if ( ! man_node_append(man, n))
1.101     kristaps  352:                return(0);
                    353:
1.119     schwarze  354:        man->next = MAN_NEXT_SIBLING;
                    355:        return(man_descope(man, ep->ln, ep->pos));
1.101     kristaps  356: }
1.1       kristaps  357:
1.94      kristaps  358: int
1.119     schwarze  359: man_addspan(struct man *man, const struct tbl_span *sp)
1.94      kristaps  360: {
1.100     kristaps  361:        struct man_node *n;
1.94      kristaps  362:
1.119     schwarze  363:        n = man_node_alloc(man, sp->line, 0, MAN_TBL, MAN_MAX);
1.100     kristaps  364:        n->span = sp;
                    365:
1.119     schwarze  366:        if ( ! man_node_append(man, n))
1.94      kristaps  367:                return(0);
1.100     kristaps  368:
1.119     schwarze  369:        man->next = MAN_NEXT_SIBLING;
                    370:        return(man_descope(man, sp->line, 0));
1.94      kristaps  371: }
                    372:
                    373: static int
1.119     schwarze  374: man_descope(struct man *man, int line, int offs)
1.94      kristaps  375: {
                    376:        /*
                    377:         * Co-ordinate what happens with having a next-line scope open:
                    378:         * first close out the element scope (if applicable), then close
                    379:         * out the block scope (also if applicable).
                    380:         */
                    381:
1.119     schwarze  382:        if (MAN_ELINE & man->flags) {
                    383:                man->flags &= ~MAN_ELINE;
1.132     schwarze  384:                if ( ! man_unscope(man, man->last->parent))
1.94      kristaps  385:                        return(0);
                    386:        }
                    387:
1.119     schwarze  388:        if ( ! (MAN_BLINE & man->flags))
1.94      kristaps  389:                return(1);
1.119     schwarze  390:        man->flags &= ~MAN_BLINE;
1.94      kristaps  391:
1.132     schwarze  392:        if ( ! man_unscope(man, man->last->parent))
1.94      kristaps  393:                return(0);
1.119     schwarze  394:        return(man_body_alloc(man, line, offs, man->last->tok));
1.94      kristaps  395: }
                    396:
1.1       kristaps  397: static int
1.119     schwarze  398: man_ptext(struct man *man, int line, char *buf, int offs)
1.1       kristaps  399: {
1.61      kristaps  400:        int              i;
1.60      kristaps  401:
1.35      kristaps  402:        /* Literal free-form text whitespace is preserved. */
                    403:
1.119     schwarze  404:        if (MAN_LITERAL & man->flags) {
                    405:                if ( ! man_word_alloc(man, line, offs, buf + offs))
1.35      kristaps  406:                        return(0);
1.119     schwarze  407:                return(man_descope(man, line, offs));
1.35      kristaps  408:        }
                    409:
1.72      kristaps  410:        for (i = offs; ' ' == buf[i]; i++)
1.31      kristaps  411:                /* Skip leading whitespace. */ ;
1.48      kristaps  412:
1.121     schwarze  413:        /*
                    414:         * Blank lines are ignored right after headings
                    415:         * but add a single vertical space elsewhere.
                    416:         */
                    417:
1.49      kristaps  418:        if ('\0' == buf[i]) {
1.61      kristaps  419:                /* Allocate a blank entry. */
1.121     schwarze  420:                if (MAN_SH != man->last->tok &&
                    421:                    MAN_SS != man->last->tok) {
                    422:                        if ( ! man_elem_alloc(man, line, offs, MAN_sp))
                    423:                                return(0);
                    424:                        man->next = MAN_NEXT_SIBLING;
                    425:                }
1.118     schwarze  426:                return(1);
1.31      kristaps  427:        }
                    428:
1.129     schwarze  429:        /*
1.63      kristaps  430:         * Warn if the last un-escaped character is whitespace. Then
1.129     schwarze  431:         * strip away the remaining spaces (tabs stay!).
1.63      kristaps  432:         */
1.29      kristaps  433:
1.61      kristaps  434:        i = (int)strlen(buf);
                    435:        assert(i);
1.49      kristaps  436:
1.63      kristaps  437:        if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
1.64      kristaps  438:                if (i > 1 && '\\' != buf[i - 2])
1.131     schwarze  439:                        mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
                    440:                            line, i - 1, NULL);
1.63      kristaps  441:
                    442:                for (--i; i && ' ' == buf[i]; i--)
                    443:                        /* Spin back to non-space. */ ;
                    444:
                    445:                /* Jump ahead of escaped whitespace. */
                    446:                i += '\\' == buf[i] ? 2 : 1;
                    447:
                    448:                buf[i] = '\0';
                    449:        }
1.49      kristaps  450:
1.119     schwarze  451:        if ( ! man_word_alloc(man, line, offs, buf + offs))
1.1       kristaps  452:                return(0);
1.65      kristaps  453:
                    454:        /*
                    455:         * End-of-sentence check.  If the last character is an unescaped
                    456:         * EOS character, then flag the node as being the end of a
                    457:         * sentence.  The front-end will know how to interpret this.
                    458:         */
1.67      kristaps  459:
1.65      kristaps  460:        assert(i);
1.122     schwarze  461:        if (mandoc_eos(buf, (size_t)i))
1.119     schwarze  462:                man->last->flags |= MAN_EOS;
1.31      kristaps  463:
1.119     schwarze  464:        return(man_descope(man, line, offs));
1.1       kristaps  465: }
                    466:
1.96      kristaps  467: static int
1.119     schwarze  468: man_pmacro(struct man *man, int ln, char *buf, int offs)
1.1       kristaps  469: {
1.34      kristaps  470:        char             mac[5];
                    471:        struct man_node *n;
1.134     schwarze  472:        enum mant        tok;
                    473:        int              i, ppos;
                    474:        int              bline;
1.1       kristaps  475:
1.107     kristaps  476:        ppos = offs;
1.9       kristaps  477:
1.56      kristaps  478:        /*
1.107     kristaps  479:         * Copy the first word into a nil-terminated buffer.
                    480:         * Stop copying when a tab, space, or eoln is encountered.
1.56      kristaps  481:         */
1.62      kristaps  482:
1.107     kristaps  483:        i = 0;
1.129     schwarze  484:        while (i < 4 && '\0' != buf[offs] && ' ' != buf[offs] &&
                    485:            '\t' != buf[offs])
1.107     kristaps  486:                mac[i++] = buf[offs++];
1.10      kristaps  487:
1.107     kristaps  488:        mac[i] = '\0';
1.1       kristaps  489:
1.107     kristaps  490:        tok = (i > 0 && i < 4) ? man_hash_find(mac) : MAN_MAX;
1.1       kristaps  491:
1.87      schwarze  492:        if (MAN_MAX == tok) {
1.136     schwarze  493:                mandoc_msg(MANDOCERR_MACRO, man->parse,
                    494:                    ln, ppos, buf + ppos - 1);
1.12      kristaps  495:                return(1);
1.1       kristaps  496:        }
                    497:
                    498:        /* The macro is sane.  Jump to the next word. */
                    499:
1.107     kristaps  500:        while (buf[offs] && ' ' == buf[offs])
                    501:                offs++;
1.1       kristaps  502:
1.129     schwarze  503:        /*
1.62      kristaps  504:         * Trailing whitespace.  Note that tabs are allowed to be passed
                    505:         * into the parser as "text", so we only warn about spaces here.
                    506:         */
1.48      kristaps  507:
1.107     kristaps  508:        if ('\0' == buf[offs] && ' ' == buf[offs - 1])
1.131     schwarze  509:                mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
                    510:                    ln, offs - 1, NULL);
1.48      kristaps  511:
1.129     schwarze  512:        /*
1.90      kristaps  513:         * Remove prior ELINE macro, as it's being clobbered by a new
1.51      kristaps  514:         * macro.  Note that NSCOPED macros do not close out ELINE
                    515:         * macros---they don't print text---so we let those slip by.
1.50      kristaps  516:         */
1.34      kristaps  517:
1.53      kristaps  518:        if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.119     schwarze  519:                        man->flags & MAN_ELINE) {
                    520:                n = man->last;
1.90      kristaps  521:                assert(MAN_TEXT != n->type);
1.51      kristaps  522:
1.90      kristaps  523:                /* Remove repeated NSCOPED macros causing ELINE. */
1.51      kristaps  524:
1.90      kristaps  525:                if (MAN_NSCOPED & man_macros[n->tok].flags)
                    526:                        n = n->parent;
1.51      kristaps  527:
1.133     schwarze  528:                mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse, n->line,
1.113     schwarze  529:                    n->pos, "%s breaks %s", man_macronames[tok],
                    530:                    man_macronames[n->tok]);
1.34      kristaps  531:
1.119     schwarze  532:                man_node_delete(man, n);
                    533:                man->flags &= ~MAN_ELINE;
1.113     schwarze  534:        }
                    535:
                    536:        /*
                    537:         * Remove prior BLINE macro that is being clobbered.
                    538:         */
1.119     schwarze  539:        if ((man->flags & MAN_BLINE) &&
1.113     schwarze  540:            (MAN_BSCOPE & man_macros[tok].flags)) {
1.119     schwarze  541:                n = man->last;
1.114     joerg     542:
                    543:                /* Might be a text node like 8 in
                    544:                 * .TP 8
                    545:                 * .SH foo
                    546:                 */
                    547:                if (MAN_TEXT == n->type)
                    548:                        n = n->parent;
1.113     schwarze  549:
                    550:                /* Remove element that didn't end BLINE, if any. */
                    551:                if ( ! (MAN_BSCOPE & man_macros[n->tok].flags))
                    552:                        n = n->parent;
                    553:
                    554:                assert(MAN_HEAD == n->type);
                    555:                n = n->parent;
                    556:                assert(MAN_BLOCK == n->type);
                    557:                assert(MAN_SCOPED & man_macros[n->tok].flags);
                    558:
1.133     schwarze  559:                mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse, n->line,
1.113     schwarze  560:                    n->pos, "%s breaks %s", man_macronames[tok],
                    561:                    man_macronames[n->tok]);
                    562:
1.119     schwarze  563:                man_node_delete(man, n);
                    564:                man->flags &= ~MAN_BLINE;
1.34      kristaps  565:        }
                    566:
1.134     schwarze  567:        /* Remember whether we are in next-line scope for a block head. */
1.59      kristaps  568:
1.134     schwarze  569:        bline = man->flags & MAN_BLINE;
1.59      kristaps  570:
                    571:        /* Call to handler... */
1.1       kristaps  572:
1.53      kristaps  573:        assert(man_macros[tok].fp);
1.119     schwarze  574:        if ( ! (*man_macros[tok].fp)(man, tok, ln, ppos, &offs, buf))
1.135     schwarze  575:                return(0);
1.123     schwarze  576:
                    577:        /* In quick mode (for mandocdb), abort after the NAME section. */
                    578:
1.130     schwarze  579:        if (man->quick && MAN_SH == tok) {
                    580:                n = man->last;
                    581:                if (MAN_BODY == n->type &&
                    582:                    strcmp(n->prev->child->string, "NAME"))
                    583:                        return(2);
                    584:        }
1.1       kristaps  585:
1.129     schwarze  586:        /*
1.135     schwarze  587:         * If we are in a next-line scope for a block head,
                    588:         * close it out now and switch to the body,
                    589:         * unless the next-line scope is allowed to continue.
1.29      kristaps  590:         */
                    591:
1.135     schwarze  592:        if ( ! bline || man->flags & MAN_ELINE ||
                    593:            man_macros[tok].flags & MAN_NSCOPED)
1.29      kristaps  594:                return(1);
                    595:
1.119     schwarze  596:        assert(MAN_BLINE & man->flags);
                    597:        man->flags &= ~MAN_BLINE;
1.11      kristaps  598:
1.132     schwarze  599:        if ( ! man_unscope(man, man->last->parent))
1.29      kristaps  600:                return(0);
1.119     schwarze  601:        return(man_body_alloc(man, ln, ppos, man->last->tok));
1.1       kristaps  602: }
1.51      kristaps  603:
1.54      kristaps  604: /*
1.119     schwarze  605:  * Unlink a node from its context.  If "man" is provided, the last parse
1.54      kristaps  606:  * point will also be adjusted accordingly.
                    607:  */
                    608: static void
1.119     schwarze  609: man_node_unlink(struct man *man, struct man_node *n)
1.51      kristaps  610: {
                    611:
1.54      kristaps  612:        /* Adjust siblings. */
                    613:
                    614:        if (n->prev)
1.51      kristaps  615:                n->prev->next = n->next;
1.54      kristaps  616:        if (n->next)
                    617:                n->next->prev = n->prev;
                    618:
                    619:        /* Adjust parent. */
                    620:
                    621:        if (n->parent) {
                    622:                n->parent->nchild--;
                    623:                if (n->parent->child == n)
                    624:                        n->parent->child = n->prev ? n->prev : n->next;
                    625:        }
                    626:
                    627:        /* Adjust parse point, if applicable. */
                    628:
1.119     schwarze  629:        if (man && man->last == n) {
1.54      kristaps  630:                /*XXX: this can occur when bailing from validation. */
                    631:                /*assert(NULL == n->next);*/
                    632:                if (n->prev) {
1.119     schwarze  633:                        man->last = n->prev;
                    634:                        man->next = MAN_NEXT_SIBLING;
1.54      kristaps  635:                } else {
1.119     schwarze  636:                        man->last = n->parent;
                    637:                        man->next = MAN_NEXT_CHILD;
1.51      kristaps  638:                }
                    639:        }
                    640:
1.119     schwarze  641:        if (man && man->first == n)
                    642:                man->first = NULL;
1.112     kristaps  643: }
                    644:
                    645: const struct mparse *
1.119     schwarze  646: man_mparse(const struct man *man)
1.112     kristaps  647: {
                    648:
1.119     schwarze  649:        assert(man && man->parse);
                    650:        return(man->parse);
1.126     schwarze  651: }
                    652:
                    653: void
                    654: man_deroff(char **dest, const struct man_node *n)
                    655: {
                    656:        char    *cp;
                    657:        size_t   sz;
                    658:
                    659:        if (MAN_TEXT != n->type) {
                    660:                for (n = n->child; n; n = n->next)
                    661:                        man_deroff(dest, n);
                    662:                return;
                    663:        }
                    664:
1.127     schwarze  665:        /* Skip leading whitespace and escape sequences. */
1.126     schwarze  666:
1.127     schwarze  667:        cp = n->string;
                    668:        while ('\0' != *cp) {
                    669:                if ('\\' == *cp) {
                    670:                        cp++;
                    671:                        mandoc_escape((const char **)&cp, NULL, NULL);
                    672:                } else if (isspace((unsigned char)*cp))
                    673:                        cp++;
                    674:                else
1.126     schwarze  675:                        break;
1.127     schwarze  676:        }
1.126     schwarze  677:
                    678:        /* Skip trailing whitespace. */
                    679:
                    680:        for (sz = strlen(cp); sz; sz--)
                    681:                if (0 == isspace((unsigned char)cp[sz-1]))
                    682:                        break;
                    683:
                    684:        /* Skip empty strings. */
                    685:
                    686:        if (0 == sz)
                    687:                return;
                    688:
                    689:        if (NULL == *dest) {
                    690:                *dest = mandoc_strndup(cp, sz);
                    691:                return;
                    692:        }
                    693:
                    694:        mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
                    695:        free(*dest);
                    696:        *dest = cp;
1.23      kristaps  697: }

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