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Annotation of mandoc/man.c, Revision 1.143

1.143   ! schwarze    1: /*     $Id: man.c,v 1.142 2014/11/03 23:18:39 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:
1.141     schwarze  122:        if (man->last->type != MAN_EQN || ln > man->last->line)
                    123:                man->flags |= MAN_NEWLINE;
1.97      kristaps  124:
1.119     schwarze  125:        return (roff_getcontrol(man->roff, buf, &offs) ?
1.129     schwarze  126:            man_pmacro(man, ln, buf, offs) :
                    127:            man_ptext(man, ln, buf, offs));
1.1       kristaps  128: }
                    129:
1.2       kristaps  130: static void
                    131: man_free1(struct man *man)
                    132: {
                    133:
                    134:        if (man->first)
1.54      kristaps  135:                man_node_delete(man, man->first);
1.2       kristaps  136:        if (man->meta.title)
                    137:                free(man->meta.title);
1.6       kristaps  138:        if (man->meta.source)
                    139:                free(man->meta.source);
1.102     schwarze  140:        if (man->meta.date)
                    141:                free(man->meta.date);
1.2       kristaps  142:        if (man->meta.vol)
                    143:                free(man->meta.vol);
1.68      kristaps  144:        if (man->meta.msec)
                    145:                free(man->meta.msec);
1.2       kristaps  146: }
                    147:
1.45      kristaps  148: static void
1.119     schwarze  149: man_alloc1(struct man *man)
1.2       kristaps  150: {
                    151:
1.119     schwarze  152:        memset(&man->meta, 0, sizeof(struct man_meta));
                    153:        man->flags = 0;
                    154:        man->last = mandoc_calloc(1, sizeof(struct man_node));
                    155:        man->first = man->last;
                    156:        man->last->type = MAN_ROOT;
                    157:        man->last->tok = MAN_MAX;
                    158:        man->next = MAN_NEXT_CHILD;
1.2       kristaps  159: }
                    160:
                    161:
1.1       kristaps  162: static int
                    163: man_node_append(struct man *man, struct man_node *p)
                    164: {
                    165:
                    166:        assert(man->last);
                    167:        assert(man->first);
                    168:        assert(MAN_ROOT != p->type);
                    169:
                    170:        switch (man->next) {
1.129     schwarze  171:        case MAN_NEXT_SIBLING:
1.1       kristaps  172:                man->last->next = p;
                    173:                p->prev = man->last;
                    174:                p->parent = man->last->parent;
                    175:                break;
1.129     schwarze  176:        case MAN_NEXT_CHILD:
1.1       kristaps  177:                man->last->child = p;
                    178:                p->parent = man->last;
                    179:                break;
                    180:        default:
                    181:                abort();
                    182:                /* NOTREACHED */
                    183:        }
1.129     schwarze  184:
1.54      kristaps  185:        assert(p->parent);
1.22      kristaps  186:        p->parent->nchild++;
1.1       kristaps  187:
1.29      kristaps  188:        switch (p->type) {
1.137     schwarze  189:        case MAN_BLOCK:
                    190:                if (p->tok == MAN_SH || p->tok == MAN_SS)
                    191:                        man->flags &= ~MAN_LITERAL;
                    192:                break;
1.129     schwarze  193:        case MAN_HEAD:
1.29      kristaps  194:                assert(MAN_BLOCK == p->parent->type);
                    195:                p->parent->head = p;
                    196:                break;
1.129     schwarze  197:        case MAN_TAIL:
1.106     kristaps  198:                assert(MAN_BLOCK == p->parent->type);
                    199:                p->parent->tail = p;
                    200:                break;
1.129     schwarze  201:        case MAN_BODY:
1.29      kristaps  202:                assert(MAN_BLOCK == p->parent->type);
                    203:                p->parent->body = p;
                    204:                break;
                    205:        default:
                    206:                break;
                    207:        }
                    208:
1.2       kristaps  209:        man->last = p;
                    210:
1.1       kristaps  211:        switch (p->type) {
1.129     schwarze  212:        case MAN_TBL:
1.94      kristaps  213:                /* FALLTHROUGH */
1.129     schwarze  214:        case MAN_TEXT:
1.2       kristaps  215:                if ( ! man_valid_post(man))
                    216:                        return(0);
1.1       kristaps  217:                break;
                    218:        default:
                    219:                break;
                    220:        }
                    221:
                    222:        return(1);
                    223: }
                    224:
                    225: static struct man_node *
1.129     schwarze  226: man_node_alloc(struct man *man, int line, int pos,
1.97      kristaps  227:                enum man_type type, enum mant tok)
1.1       kristaps  228: {
                    229:        struct man_node *p;
                    230:
1.45      kristaps  231:        p = mandoc_calloc(1, sizeof(struct man_node));
1.1       kristaps  232:        p->line = line;
                    233:        p->pos = pos;
                    234:        p->type = type;
1.16      kristaps  235:        p->tok = tok;
1.97      kristaps  236:
1.119     schwarze  237:        if (MAN_NEWLINE & man->flags)
1.97      kristaps  238:                p->flags |= MAN_LINE;
1.119     schwarze  239:        man->flags &= ~MAN_NEWLINE;
1.1       kristaps  240:        return(p);
                    241: }
                    242:
                    243: int
1.119     schwarze  244: man_elem_alloc(struct man *man, int line, int pos, enum mant tok)
1.1       kristaps  245: {
                    246:        struct man_node *p;
                    247:
1.119     schwarze  248:        p = man_node_alloc(man, line, pos, MAN_ELEM, tok);
                    249:        if ( ! man_node_append(man, p))
1.106     kristaps  250:                return(0);
1.119     schwarze  251:        man->next = MAN_NEXT_CHILD;
1.106     kristaps  252:        return(1);
                    253: }
                    254:
                    255: int
1.119     schwarze  256: man_tail_alloc(struct man *man, int line, int pos, enum mant tok)
1.106     kristaps  257: {
                    258:        struct man_node *p;
                    259:
1.119     schwarze  260:        p = man_node_alloc(man, line, pos, MAN_TAIL, tok);
                    261:        if ( ! man_node_append(man, p))
1.30      kristaps  262:                return(0);
1.119     schwarze  263:        man->next = MAN_NEXT_CHILD;
1.30      kristaps  264:        return(1);
1.1       kristaps  265: }
                    266:
                    267: int
1.119     schwarze  268: man_head_alloc(struct man *man, int line, int pos, enum mant tok)
1.29      kristaps  269: {
                    270:        struct man_node *p;
                    271:
1.119     schwarze  272:        p = man_node_alloc(man, line, pos, MAN_HEAD, tok);
                    273:        if ( ! man_node_append(man, p))
1.29      kristaps  274:                return(0);
1.119     schwarze  275:        man->next = MAN_NEXT_CHILD;
1.29      kristaps  276:        return(1);
                    277: }
                    278:
                    279: int
1.119     schwarze  280: man_body_alloc(struct man *man, int line, int pos, enum mant tok)
1.29      kristaps  281: {
                    282:        struct man_node *p;
                    283:
1.119     schwarze  284:        p = man_node_alloc(man, line, pos, MAN_BODY, tok);
                    285:        if ( ! man_node_append(man, p))
1.29      kristaps  286:                return(0);
1.119     schwarze  287:        man->next = MAN_NEXT_CHILD;
1.29      kristaps  288:        return(1);
                    289: }
                    290:
                    291: int
1.119     schwarze  292: man_block_alloc(struct man *man, int line, int pos, enum mant tok)
1.29      kristaps  293: {
                    294:        struct man_node *p;
                    295:
1.119     schwarze  296:        p = man_node_alloc(man, line, pos, MAN_BLOCK, tok);
                    297:        if ( ! man_node_append(man, p))
1.29      kristaps  298:                return(0);
1.119     schwarze  299:        man->next = MAN_NEXT_CHILD;
1.29      kristaps  300:        return(1);
                    301: }
                    302:
1.61      kristaps  303: int
1.119     schwarze  304: man_word_alloc(struct man *man, int line, int pos, const char *word)
1.1       kristaps  305: {
1.31      kristaps  306:        struct man_node *n;
1.1       kristaps  307:
1.119     schwarze  308:        n = man_node_alloc(man, line, pos, MAN_TEXT, MAN_MAX);
                    309:        n->string = roff_strdup(man->roff, word);
1.31      kristaps  310:
1.119     schwarze  311:        if ( ! man_node_append(man, n))
1.30      kristaps  312:                return(0);
1.61      kristaps  313:
1.119     schwarze  314:        man->next = MAN_NEXT_SIBLING;
1.30      kristaps  315:        return(1);
1.142     schwarze  316: }
                    317:
                    318: void
                    319: man_word_append(struct man *man, const char *word)
                    320: {
                    321:        struct man_node *n;
                    322:        char            *addstr, *newstr;
                    323:
                    324:        n = man->last;
                    325:        addstr = roff_strdup(man->roff, word);
                    326:        mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
                    327:        free(addstr);
                    328:        free(n->string);
                    329:        n->string = newstr;
                    330:        man->next = MAN_NEXT_SIBLING;
1.1       kristaps  331: }
                    332:
1.54      kristaps  333: /*
                    334:  * Free all of the resources held by a node.  This does NOT unlink a
                    335:  * node from its context; for that, see man_node_unlink().
                    336:  */
                    337: static void
1.1       kristaps  338: man_node_free(struct man_node *p)
                    339: {
                    340:
                    341:        if (p->string)
                    342:                free(p->string);
                    343:        free(p);
                    344: }
                    345:
                    346: void
1.119     schwarze  347: man_node_delete(struct man *man, struct man_node *p)
1.1       kristaps  348: {
                    349:
1.54      kristaps  350:        while (p->child)
1.119     schwarze  351:                man_node_delete(man, p->child);
1.54      kristaps  352:
1.119     schwarze  353:        man_node_unlink(man, p);
1.1       kristaps  354:        man_node_free(p);
                    355: }
                    356:
1.101     kristaps  357: int
1.119     schwarze  358: man_addeqn(struct man *man, const struct eqn *ep)
1.101     kristaps  359: {
                    360:        struct man_node *n;
                    361:
1.119     schwarze  362:        n = man_node_alloc(man, ep->ln, ep->pos, MAN_EQN, MAN_MAX);
1.101     kristaps  363:        n->eqn = ep;
1.140     schwarze  364:        if (ep->ln > man->last->line)
                    365:                n->flags |= MAN_LINE;
1.101     kristaps  366:
1.119     schwarze  367:        if ( ! man_node_append(man, n))
1.101     kristaps  368:                return(0);
                    369:
1.119     schwarze  370:        man->next = MAN_NEXT_SIBLING;
                    371:        return(man_descope(man, ep->ln, ep->pos));
1.101     kristaps  372: }
1.1       kristaps  373:
1.94      kristaps  374: int
1.119     schwarze  375: man_addspan(struct man *man, const struct tbl_span *sp)
1.94      kristaps  376: {
1.100     kristaps  377:        struct man_node *n;
1.94      kristaps  378:
1.119     schwarze  379:        n = man_node_alloc(man, sp->line, 0, MAN_TBL, MAN_MAX);
1.100     kristaps  380:        n->span = sp;
                    381:
1.119     schwarze  382:        if ( ! man_node_append(man, n))
1.94      kristaps  383:                return(0);
1.100     kristaps  384:
1.119     schwarze  385:        man->next = MAN_NEXT_SIBLING;
                    386:        return(man_descope(man, sp->line, 0));
1.94      kristaps  387: }
                    388:
                    389: static int
1.119     schwarze  390: man_descope(struct man *man, int line, int offs)
1.94      kristaps  391: {
                    392:        /*
                    393:         * Co-ordinate what happens with having a next-line scope open:
                    394:         * first close out the element scope (if applicable), then close
                    395:         * out the block scope (also if applicable).
                    396:         */
                    397:
1.119     schwarze  398:        if (MAN_ELINE & man->flags) {
                    399:                man->flags &= ~MAN_ELINE;
1.132     schwarze  400:                if ( ! man_unscope(man, man->last->parent))
1.94      kristaps  401:                        return(0);
                    402:        }
                    403:
1.119     schwarze  404:        if ( ! (MAN_BLINE & man->flags))
1.94      kristaps  405:                return(1);
1.119     schwarze  406:        man->flags &= ~MAN_BLINE;
1.94      kristaps  407:
1.132     schwarze  408:        if ( ! man_unscope(man, man->last->parent))
1.94      kristaps  409:                return(0);
1.119     schwarze  410:        return(man_body_alloc(man, line, offs, man->last->tok));
1.94      kristaps  411: }
                    412:
1.1       kristaps  413: static int
1.119     schwarze  414: man_ptext(struct man *man, int line, char *buf, int offs)
1.1       kristaps  415: {
1.61      kristaps  416:        int              i;
1.60      kristaps  417:
1.35      kristaps  418:        /* Literal free-form text whitespace is preserved. */
                    419:
1.119     schwarze  420:        if (MAN_LITERAL & man->flags) {
                    421:                if ( ! man_word_alloc(man, line, offs, buf + offs))
1.35      kristaps  422:                        return(0);
1.119     schwarze  423:                return(man_descope(man, line, offs));
1.35      kristaps  424:        }
                    425:
1.72      kristaps  426:        for (i = offs; ' ' == buf[i]; i++)
1.31      kristaps  427:                /* Skip leading whitespace. */ ;
1.48      kristaps  428:
1.121     schwarze  429:        /*
                    430:         * Blank lines are ignored right after headings
                    431:         * but add a single vertical space elsewhere.
                    432:         */
                    433:
1.49      kristaps  434:        if ('\0' == buf[i]) {
1.61      kristaps  435:                /* Allocate a blank entry. */
1.121     schwarze  436:                if (MAN_SH != man->last->tok &&
                    437:                    MAN_SS != man->last->tok) {
                    438:                        if ( ! man_elem_alloc(man, line, offs, MAN_sp))
                    439:                                return(0);
                    440:                        man->next = MAN_NEXT_SIBLING;
                    441:                }
1.118     schwarze  442:                return(1);
1.31      kristaps  443:        }
                    444:
1.129     schwarze  445:        /*
1.63      kristaps  446:         * Warn if the last un-escaped character is whitespace. Then
1.129     schwarze  447:         * strip away the remaining spaces (tabs stay!).
1.63      kristaps  448:         */
1.29      kristaps  449:
1.61      kristaps  450:        i = (int)strlen(buf);
                    451:        assert(i);
1.49      kristaps  452:
1.63      kristaps  453:        if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
1.64      kristaps  454:                if (i > 1 && '\\' != buf[i - 2])
1.131     schwarze  455:                        mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
                    456:                            line, i - 1, NULL);
1.63      kristaps  457:
                    458:                for (--i; i && ' ' == buf[i]; i--)
                    459:                        /* Spin back to non-space. */ ;
                    460:
                    461:                /* Jump ahead of escaped whitespace. */
                    462:                i += '\\' == buf[i] ? 2 : 1;
                    463:
                    464:                buf[i] = '\0';
                    465:        }
1.49      kristaps  466:
1.119     schwarze  467:        if ( ! man_word_alloc(man, line, offs, buf + offs))
1.1       kristaps  468:                return(0);
1.65      kristaps  469:
                    470:        /*
                    471:         * End-of-sentence check.  If the last character is an unescaped
                    472:         * EOS character, then flag the node as being the end of a
                    473:         * sentence.  The front-end will know how to interpret this.
                    474:         */
1.67      kristaps  475:
1.65      kristaps  476:        assert(i);
1.122     schwarze  477:        if (mandoc_eos(buf, (size_t)i))
1.119     schwarze  478:                man->last->flags |= MAN_EOS;
1.31      kristaps  479:
1.119     schwarze  480:        return(man_descope(man, line, offs));
1.1       kristaps  481: }
                    482:
1.96      kristaps  483: static int
1.119     schwarze  484: man_pmacro(struct man *man, int ln, char *buf, int offs)
1.1       kristaps  485: {
1.34      kristaps  486:        struct man_node *n;
1.143   ! schwarze  487:        const char      *cp;
1.134     schwarze  488:        enum mant        tok;
                    489:        int              i, ppos;
                    490:        int              bline;
1.143   ! schwarze  491:        char             mac[5];
1.1       kristaps  492:
1.107     kristaps  493:        ppos = offs;
1.9       kristaps  494:
1.56      kristaps  495:        /*
1.107     kristaps  496:         * Copy the first word into a nil-terminated buffer.
1.143   ! schwarze  497:         * Stop when a space, tab, escape, or eoln is encountered.
1.56      kristaps  498:         */
1.62      kristaps  499:
1.107     kristaps  500:        i = 0;
1.143   ! schwarze  501:        while (i < 4 && strchr(" \t\\", buf[offs]) == NULL)
1.107     kristaps  502:                mac[i++] = buf[offs++];
1.10      kristaps  503:
1.107     kristaps  504:        mac[i] = '\0';
1.1       kristaps  505:
1.107     kristaps  506:        tok = (i > 0 && i < 4) ? man_hash_find(mac) : MAN_MAX;
1.1       kristaps  507:
1.143   ! schwarze  508:        if (tok == MAN_MAX) {
1.136     schwarze  509:                mandoc_msg(MANDOCERR_MACRO, man->parse,
                    510:                    ln, ppos, buf + ppos - 1);
1.12      kristaps  511:                return(1);
1.1       kristaps  512:        }
                    513:
1.143   ! schwarze  514:        /* Skip a leading escape sequence or tab. */
        !           515:
        !           516:        switch (buf[offs]) {
        !           517:        case '\\':
        !           518:                cp = buf + offs + 1;
        !           519:                mandoc_escape(&cp, NULL, NULL);
        !           520:                offs = cp - buf;
        !           521:                break;
        !           522:        case '\t':
        !           523:                offs++;
        !           524:                break;
        !           525:        default:
        !           526:                break;
        !           527:        }
        !           528:
        !           529:        /* Jump to the next non-whitespace word. */
1.1       kristaps  530:
1.107     kristaps  531:        while (buf[offs] && ' ' == buf[offs])
                    532:                offs++;
1.1       kristaps  533:
1.129     schwarze  534:        /*
1.62      kristaps  535:         * Trailing whitespace.  Note that tabs are allowed to be passed
                    536:         * into the parser as "text", so we only warn about spaces here.
                    537:         */
1.48      kristaps  538:
1.107     kristaps  539:        if ('\0' == buf[offs] && ' ' == buf[offs - 1])
1.131     schwarze  540:                mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
                    541:                    ln, offs - 1, NULL);
1.48      kristaps  542:
1.129     schwarze  543:        /*
1.90      kristaps  544:         * Remove prior ELINE macro, as it's being clobbered by a new
1.51      kristaps  545:         * macro.  Note that NSCOPED macros do not close out ELINE
                    546:         * macros---they don't print text---so we let those slip by.
1.50      kristaps  547:         */
1.34      kristaps  548:
1.53      kristaps  549:        if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.119     schwarze  550:                        man->flags & MAN_ELINE) {
                    551:                n = man->last;
1.90      kristaps  552:                assert(MAN_TEXT != n->type);
1.51      kristaps  553:
1.90      kristaps  554:                /* Remove repeated NSCOPED macros causing ELINE. */
1.51      kristaps  555:
1.90      kristaps  556:                if (MAN_NSCOPED & man_macros[n->tok].flags)
                    557:                        n = n->parent;
1.51      kristaps  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]);
1.34      kristaps  562:
1.119     schwarze  563:                man_node_delete(man, n);
                    564:                man->flags &= ~MAN_ELINE;
1.113     schwarze  565:        }
                    566:
                    567:        /*
                    568:         * Remove prior BLINE macro that is being clobbered.
                    569:         */
1.119     schwarze  570:        if ((man->flags & MAN_BLINE) &&
1.113     schwarze  571:            (MAN_BSCOPE & man_macros[tok].flags)) {
1.119     schwarze  572:                n = man->last;
1.114     joerg     573:
                    574:                /* Might be a text node like 8 in
                    575:                 * .TP 8
                    576:                 * .SH foo
                    577:                 */
                    578:                if (MAN_TEXT == n->type)
                    579:                        n = n->parent;
1.113     schwarze  580:
                    581:                /* Remove element that didn't end BLINE, if any. */
                    582:                if ( ! (MAN_BSCOPE & man_macros[n->tok].flags))
                    583:                        n = n->parent;
                    584:
                    585:                assert(MAN_HEAD == n->type);
                    586:                n = n->parent;
                    587:                assert(MAN_BLOCK == n->type);
                    588:                assert(MAN_SCOPED & man_macros[n->tok].flags);
                    589:
1.133     schwarze  590:                mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse, n->line,
1.113     schwarze  591:                    n->pos, "%s breaks %s", man_macronames[tok],
                    592:                    man_macronames[n->tok]);
                    593:
1.119     schwarze  594:                man_node_delete(man, n);
                    595:                man->flags &= ~MAN_BLINE;
1.34      kristaps  596:        }
                    597:
1.134     schwarze  598:        /* Remember whether we are in next-line scope for a block head. */
1.59      kristaps  599:
1.134     schwarze  600:        bline = man->flags & MAN_BLINE;
1.59      kristaps  601:
                    602:        /* Call to handler... */
1.1       kristaps  603:
1.53      kristaps  604:        assert(man_macros[tok].fp);
1.119     schwarze  605:        if ( ! (*man_macros[tok].fp)(man, tok, ln, ppos, &offs, buf))
1.135     schwarze  606:                return(0);
1.123     schwarze  607:
                    608:        /* In quick mode (for mandocdb), abort after the NAME section. */
                    609:
1.130     schwarze  610:        if (man->quick && MAN_SH == tok) {
                    611:                n = man->last;
                    612:                if (MAN_BODY == n->type &&
                    613:                    strcmp(n->prev->child->string, "NAME"))
                    614:                        return(2);
                    615:        }
1.1       kristaps  616:
1.129     schwarze  617:        /*
1.135     schwarze  618:         * If we are in a next-line scope for a block head,
                    619:         * close it out now and switch to the body,
                    620:         * unless the next-line scope is allowed to continue.
1.29      kristaps  621:         */
                    622:
1.135     schwarze  623:        if ( ! bline || man->flags & MAN_ELINE ||
                    624:            man_macros[tok].flags & MAN_NSCOPED)
1.29      kristaps  625:                return(1);
                    626:
1.119     schwarze  627:        assert(MAN_BLINE & man->flags);
                    628:        man->flags &= ~MAN_BLINE;
1.11      kristaps  629:
1.132     schwarze  630:        if ( ! man_unscope(man, man->last->parent))
1.29      kristaps  631:                return(0);
1.119     schwarze  632:        return(man_body_alloc(man, ln, ppos, man->last->tok));
1.1       kristaps  633: }
1.51      kristaps  634:
1.54      kristaps  635: /*
1.119     schwarze  636:  * Unlink a node from its context.  If "man" is provided, the last parse
1.54      kristaps  637:  * point will also be adjusted accordingly.
                    638:  */
                    639: static void
1.119     schwarze  640: man_node_unlink(struct man *man, struct man_node *n)
1.51      kristaps  641: {
                    642:
1.54      kristaps  643:        /* Adjust siblings. */
                    644:
                    645:        if (n->prev)
1.51      kristaps  646:                n->prev->next = n->next;
1.54      kristaps  647:        if (n->next)
                    648:                n->next->prev = n->prev;
                    649:
                    650:        /* Adjust parent. */
                    651:
                    652:        if (n->parent) {
                    653:                n->parent->nchild--;
                    654:                if (n->parent->child == n)
                    655:                        n->parent->child = n->prev ? n->prev : n->next;
                    656:        }
                    657:
                    658:        /* Adjust parse point, if applicable. */
                    659:
1.119     schwarze  660:        if (man && man->last == n) {
1.54      kristaps  661:                /*XXX: this can occur when bailing from validation. */
                    662:                /*assert(NULL == n->next);*/
                    663:                if (n->prev) {
1.119     schwarze  664:                        man->last = n->prev;
                    665:                        man->next = MAN_NEXT_SIBLING;
1.54      kristaps  666:                } else {
1.119     schwarze  667:                        man->last = n->parent;
                    668:                        man->next = MAN_NEXT_CHILD;
1.51      kristaps  669:                }
                    670:        }
                    671:
1.119     schwarze  672:        if (man && man->first == n)
                    673:                man->first = NULL;
1.112     kristaps  674: }
                    675:
                    676: const struct mparse *
1.119     schwarze  677: man_mparse(const struct man *man)
1.112     kristaps  678: {
                    679:
1.119     schwarze  680:        assert(man && man->parse);
                    681:        return(man->parse);
1.126     schwarze  682: }
                    683:
                    684: void
                    685: man_deroff(char **dest, const struct man_node *n)
                    686: {
                    687:        char    *cp;
                    688:        size_t   sz;
                    689:
                    690:        if (MAN_TEXT != n->type) {
                    691:                for (n = n->child; n; n = n->next)
                    692:                        man_deroff(dest, n);
                    693:                return;
                    694:        }
                    695:
1.127     schwarze  696:        /* Skip leading whitespace and escape sequences. */
1.126     schwarze  697:
1.127     schwarze  698:        cp = n->string;
                    699:        while ('\0' != *cp) {
                    700:                if ('\\' == *cp) {
                    701:                        cp++;
                    702:                        mandoc_escape((const char **)&cp, NULL, NULL);
                    703:                } else if (isspace((unsigned char)*cp))
                    704:                        cp++;
                    705:                else
1.126     schwarze  706:                        break;
1.127     schwarze  707:        }
1.126     schwarze  708:
                    709:        /* Skip trailing whitespace. */
                    710:
                    711:        for (sz = strlen(cp); sz; sz--)
                    712:                if (0 == isspace((unsigned char)cp[sz-1]))
                    713:                        break;
                    714:
                    715:        /* Skip empty strings. */
                    716:
                    717:        if (0 == sz)
                    718:                return;
                    719:
                    720:        if (NULL == *dest) {
                    721:                *dest = mandoc_strndup(cp, sz);
                    722:                return;
                    723:        }
                    724:
                    725:        mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
                    726:        free(*dest);
                    727:        *dest = cp;
1.23      kristaps  728: }

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