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Annotation of mandoc/man.c, Revision 1.76

1.76    ! kristaps    1: /*     $Id: man.c,v 1.75 2010/05/26 14:03:54 kristaps Exp $ */
1.1       kristaps    2: /*
1.76    ! kristaps    3:  * Copyright (c) 2008, 2009 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 <ctype.h>
                     25: #include <stdarg.h>
                     26: #include <stdlib.h>
                     27: #include <stdio.h>
                     28: #include <string.h>
                     29:
1.74      kristaps   30: #include "mandoc.h"
1.1       kristaps   31: #include "libman.h"
1.45      kristaps   32: #include "libmandoc.h"
1.1       kristaps   33:
                     34: const  char *const __man_macronames[MAN_MAX] = {
1.21      kristaps   35:        "br",           "TH",           "SH",           "SS",
1.1       kristaps   36:        "TP",           "LP",           "PP",           "P",
                     37:        "IP",           "HP",           "SM",           "SB",
                     38:        "BI",           "IB",           "BR",           "RB",
1.11      kristaps   39:        "R",            "B",            "I",            "IR",
1.29      kristaps   40:        "RI",           "na",           "i",            "sp",
1.30      kristaps   41:        "nf",           "fi",           "r",            "RE",
1.52      kristaps   42:        "RS",           "DT",           "UC",           "PD",
1.73      joerg      43:        "Sp",           "Vb",           "Ve",           "AT",
1.1       kristaps   44:        };
                     45:
                     46: const  char * const *man_macronames = __man_macronames;
                     47:
1.16      kristaps   48: static struct man_node *man_node_alloc(int, int,
1.53      kristaps   49:                                enum man_type, enum mant);
1.1       kristaps   50: static int              man_node_append(struct man *,
                     51:                                struct man_node *);
1.54      kristaps   52: static void             man_node_free(struct man_node *);
                     53: static void             man_node_unlink(struct man *,
                     54:                                struct man_node *);
1.72      kristaps   55: static int              man_ptext(struct man *, int, char *, int);
                     56: static int              man_pmacro(struct man *, int, char *, int);
1.2       kristaps   57: static void             man_free1(struct man *);
1.45      kristaps   58: static void             man_alloc1(struct man *);
1.72      kristaps   59: static int              macrowarn(struct man *, int, const char *, int);
1.1       kristaps   60:
                     61:
                     62: const struct man_node *
1.2       kristaps   63: man_node(const struct man *m)
1.1       kristaps   64: {
                     65:
1.2       kristaps   66:        return(MAN_HALT & m->flags ? NULL : m->first);
1.1       kristaps   67: }
                     68:
                     69:
                     70: const struct man_meta *
1.2       kristaps   71: man_meta(const struct man *m)
1.1       kristaps   72: {
                     73:
1.2       kristaps   74:        return(MAN_HALT & m->flags ? NULL : &m->meta);
1.1       kristaps   75: }
                     76:
                     77:
1.45      kristaps   78: void
1.1       kristaps   79: man_reset(struct man *man)
                     80: {
                     81:
1.2       kristaps   82:        man_free1(man);
1.45      kristaps   83:        man_alloc1(man);
1.1       kristaps   84: }
                     85:
                     86:
                     87: void
                     88: man_free(struct man *man)
                     89: {
                     90:
1.2       kristaps   91:        man_free1(man);
1.1       kristaps   92:        free(man);
                     93: }
                     94:
                     95:
                     96: struct man *
1.74      kristaps   97: man_alloc(void *data, int pflags, mandocmsg msg)
1.1       kristaps   98: {
                     99:        struct man      *p;
                    100:
1.45      kristaps  101:        p = mandoc_calloc(1, sizeof(struct man));
1.2       kristaps  102:
1.40      kristaps  103:        man_hash_init();
1.4       kristaps  104:        p->data = data;
1.7       kristaps  105:        p->pflags = pflags;
1.74      kristaps  106:        p->msg = msg;
1.45      kristaps  107:
                    108:        man_alloc1(p);
1.1       kristaps  109:        return(p);
                    110: }
                    111:
                    112:
                    113: int
                    114: man_endparse(struct man *m)
                    115: {
                    116:
1.3       kristaps  117:        if (MAN_HALT & m->flags)
                    118:                return(0);
                    119:        else if (man_macroend(m))
                    120:                return(1);
                    121:        m->flags |= MAN_HALT;
                    122:        return(0);
1.1       kristaps  123: }
                    124:
                    125:
                    126: int
1.72      kristaps  127: man_parseln(struct man *m, int ln, char *buf, int offs)
1.1       kristaps  128: {
                    129:
1.72      kristaps  130:        if (MAN_HALT & m->flags)
                    131:                return(0);
                    132:
                    133:        return(('.' == buf[offs] || '\'' == buf[offs]) ?
                    134:                        man_pmacro(m, ln, buf, offs) :
                    135:                        man_ptext(m, ln, buf, offs));
1.1       kristaps  136: }
                    137:
                    138:
1.2       kristaps  139: static void
                    140: man_free1(struct man *man)
                    141: {
                    142:
                    143:        if (man->first)
1.54      kristaps  144:                man_node_delete(man, man->first);
1.2       kristaps  145:        if (man->meta.title)
                    146:                free(man->meta.title);
1.6       kristaps  147:        if (man->meta.source)
                    148:                free(man->meta.source);
1.75      kristaps  149:        if (man->meta.rawdate)
                    150:                free(man->meta.rawdate);
1.2       kristaps  151:        if (man->meta.vol)
                    152:                free(man->meta.vol);
1.68      kristaps  153:        if (man->meta.msec)
                    154:                free(man->meta.msec);
1.2       kristaps  155: }
                    156:
                    157:
1.45      kristaps  158: static void
1.2       kristaps  159: man_alloc1(struct man *m)
                    160: {
                    161:
1.44      kristaps  162:        memset(&m->meta, 0, sizeof(struct man_meta));
1.2       kristaps  163:        m->flags = 0;
1.45      kristaps  164:        m->last = mandoc_calloc(1, sizeof(struct man_node));
1.2       kristaps  165:        m->first = m->last;
                    166:        m->last->type = MAN_ROOT;
1.54      kristaps  167:        m->last->tok = MAN_MAX;
1.2       kristaps  168:        m->next = MAN_NEXT_CHILD;
                    169: }
                    170:
                    171:
1.1       kristaps  172: static int
                    173: man_node_append(struct man *man, struct man_node *p)
                    174: {
                    175:
                    176:        assert(man->last);
                    177:        assert(man->first);
                    178:        assert(MAN_ROOT != p->type);
                    179:
                    180:        switch (man->next) {
                    181:        case (MAN_NEXT_SIBLING):
                    182:                man->last->next = p;
                    183:                p->prev = man->last;
                    184:                p->parent = man->last->parent;
                    185:                break;
                    186:        case (MAN_NEXT_CHILD):
                    187:                man->last->child = p;
                    188:                p->parent = man->last;
                    189:                break;
                    190:        default:
                    191:                abort();
                    192:                /* NOTREACHED */
                    193:        }
1.22      kristaps  194:
1.54      kristaps  195:        assert(p->parent);
1.22      kristaps  196:        p->parent->nchild++;
1.1       kristaps  197:
1.29      kristaps  198:        if ( ! man_valid_pre(man, p))
                    199:                return(0);
                    200:
                    201:        switch (p->type) {
                    202:        case (MAN_HEAD):
                    203:                assert(MAN_BLOCK == p->parent->type);
                    204:                p->parent->head = p;
                    205:                break;
                    206:        case (MAN_BODY):
                    207:                assert(MAN_BLOCK == p->parent->type);
                    208:                p->parent->body = p;
                    209:                break;
                    210:        default:
                    211:                break;
                    212:        }
                    213:
1.2       kristaps  214:        man->last = p;
                    215:
1.1       kristaps  216:        switch (p->type) {
1.2       kristaps  217:        case (MAN_TEXT):
                    218:                if ( ! man_valid_post(man))
                    219:                        return(0);
                    220:                if ( ! man_action_post(man))
                    221:                        return(0);
1.1       kristaps  222:                break;
                    223:        default:
                    224:                break;
                    225:        }
                    226:
                    227:        return(1);
                    228: }
                    229:
                    230:
                    231: static struct man_node *
1.53      kristaps  232: man_node_alloc(int line, int pos, enum man_type type, enum mant tok)
1.1       kristaps  233: {
                    234:        struct man_node *p;
                    235:
1.45      kristaps  236:        p = mandoc_calloc(1, sizeof(struct man_node));
1.1       kristaps  237:        p->line = line;
                    238:        p->pos = pos;
                    239:        p->type = type;
1.16      kristaps  240:        p->tok = tok;
1.1       kristaps  241:        return(p);
                    242: }
                    243:
                    244:
                    245: int
1.53      kristaps  246: man_elem_alloc(struct man *m, int line, int pos, enum mant tok)
1.1       kristaps  247: {
                    248:        struct man_node *p;
                    249:
1.16      kristaps  250:        p = man_node_alloc(line, pos, MAN_ELEM, tok);
1.30      kristaps  251:        if ( ! man_node_append(m, p))
                    252:                return(0);
                    253:        m->next = MAN_NEXT_CHILD;
                    254:        return(1);
1.1       kristaps  255: }
                    256:
                    257:
                    258: int
1.53      kristaps  259: man_head_alloc(struct man *m, int line, int pos, enum mant tok)
1.29      kristaps  260: {
                    261:        struct man_node *p;
                    262:
                    263:        p = man_node_alloc(line, pos, MAN_HEAD, tok);
                    264:        if ( ! man_node_append(m, p))
                    265:                return(0);
                    266:        m->next = MAN_NEXT_CHILD;
                    267:        return(1);
                    268: }
                    269:
                    270:
                    271: int
1.53      kristaps  272: man_body_alloc(struct man *m, int line, int pos, enum mant tok)
1.29      kristaps  273: {
                    274:        struct man_node *p;
                    275:
                    276:        p = man_node_alloc(line, pos, MAN_BODY, tok);
                    277:        if ( ! man_node_append(m, p))
                    278:                return(0);
                    279:        m->next = MAN_NEXT_CHILD;
                    280:        return(1);
                    281: }
                    282:
                    283:
                    284: int
1.53      kristaps  285: man_block_alloc(struct man *m, int line, int pos, enum mant tok)
1.29      kristaps  286: {
                    287:        struct man_node *p;
                    288:
                    289:        p = man_node_alloc(line, pos, MAN_BLOCK, tok);
                    290:        if ( ! man_node_append(m, p))
                    291:                return(0);
                    292:        m->next = MAN_NEXT_CHILD;
                    293:        return(1);
                    294: }
                    295:
                    296:
1.61      kristaps  297: int
                    298: man_word_alloc(struct man *m, int line, int pos, const char *word)
1.1       kristaps  299: {
1.31      kristaps  300:        struct man_node *n;
1.61      kristaps  301:        size_t           sv, len;
                    302:
                    303:        len = strlen(word);
1.1       kristaps  304:
1.53      kristaps  305:        n = man_node_alloc(line, pos, MAN_TEXT, MAN_MAX);
1.45      kristaps  306:        n->string = mandoc_malloc(len + 1);
1.61      kristaps  307:        sv = strlcpy(n->string, word, len + 1);
1.31      kristaps  308:
                    309:        /* Prohibit truncation. */
                    310:        assert(sv < len + 1);
                    311:
                    312:        if ( ! man_node_append(m, n))
1.30      kristaps  313:                return(0);
1.61      kristaps  314:
1.30      kristaps  315:        m->next = MAN_NEXT_SIBLING;
                    316:        return(1);
1.1       kristaps  317: }
                    318:
                    319:
1.54      kristaps  320: /*
                    321:  * Free all of the resources held by a node.  This does NOT unlink a
                    322:  * node from its context; for that, see man_node_unlink().
                    323:  */
                    324: static void
1.1       kristaps  325: man_node_free(struct man_node *p)
                    326: {
                    327:
                    328:        if (p->string)
                    329:                free(p->string);
                    330:        free(p);
                    331: }
                    332:
                    333:
                    334: void
1.54      kristaps  335: man_node_delete(struct man *m, struct man_node *p)
1.1       kristaps  336: {
                    337:
1.54      kristaps  338:        while (p->child)
                    339:                man_node_delete(m, p->child);
                    340:
                    341:        man_node_unlink(m, p);
1.1       kristaps  342:        man_node_free(p);
                    343: }
                    344:
                    345:
                    346: static int
1.72      kristaps  347: man_ptext(struct man *m, int line, char *buf, int offs)
1.1       kristaps  348: {
1.61      kristaps  349:        int              i;
1.60      kristaps  350:
                    351:        /* Ignore bogus comments. */
                    352:
1.72      kristaps  353:        if ('\\' == buf[offs] &&
                    354:                        '.' == buf[offs + 1] &&
                    355:                        '"' == buf[offs + 2])
1.74      kristaps  356:                return(man_pmsg(m, line, offs, MANDOCERR_BADCOMMENT));
1.31      kristaps  357:
1.35      kristaps  358:        /* Literal free-form text whitespace is preserved. */
                    359:
                    360:        if (MAN_LITERAL & m->flags) {
1.72      kristaps  361:                if ( ! man_word_alloc(m, line, offs, buf + offs))
1.35      kristaps  362:                        return(0);
                    363:                goto descope;
                    364:        }
                    365:
1.61      kristaps  366:        /* Pump blank lines directly into the backend. */
1.31      kristaps  367:
1.72      kristaps  368:        for (i = offs; ' ' == buf[i]; i++)
1.31      kristaps  369:                /* Skip leading whitespace. */ ;
1.48      kristaps  370:
1.49      kristaps  371:        if ('\0' == buf[i]) {
1.61      kristaps  372:                /* Allocate a blank entry. */
1.72      kristaps  373:                if ( ! man_word_alloc(m, line, offs, ""))
1.31      kristaps  374:                        return(0);
                    375:                goto descope;
                    376:        }
                    377:
1.63      kristaps  378:        /*
                    379:         * Warn if the last un-escaped character is whitespace. Then
                    380:         * strip away the remaining spaces (tabs stay!).
                    381:         */
1.29      kristaps  382:
1.61      kristaps  383:        i = (int)strlen(buf);
                    384:        assert(i);
1.49      kristaps  385:
1.63      kristaps  386:        if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
1.64      kristaps  387:                if (i > 1 && '\\' != buf[i - 2])
1.74      kristaps  388:                        if ( ! man_pmsg(m, line, i - 1, MANDOCERR_EOLNSPACE))
1.49      kristaps  389:                                return(0);
1.63      kristaps  390:
                    391:                for (--i; i && ' ' == buf[i]; i--)
                    392:                        /* Spin back to non-space. */ ;
                    393:
                    394:                /* Jump ahead of escaped whitespace. */
                    395:                i += '\\' == buf[i] ? 2 : 1;
                    396:
                    397:                buf[i] = '\0';
                    398:        }
1.49      kristaps  399:
1.72      kristaps  400:        if ( ! man_word_alloc(m, line, offs, buf + offs))
1.1       kristaps  401:                return(0);
1.65      kristaps  402:
                    403:        /*
                    404:         * End-of-sentence check.  If the last character is an unescaped
                    405:         * EOS character, then flag the node as being the end of a
                    406:         * sentence.  The front-end will know how to interpret this.
                    407:         */
1.67      kristaps  408:
1.65      kristaps  409:        assert(i);
1.66      kristaps  410:        if (mandoc_eos(buf, (size_t)i))
1.65      kristaps  411:                m->last->flags |= MAN_EOS;
1.31      kristaps  412:
                    413: descope:
1.11      kristaps  414:        /*
1.29      kristaps  415:         * Co-ordinate what happens with having a next-line scope open:
                    416:         * first close out the element scope (if applicable), then close
                    417:         * out the block scope (also if applicable).
1.11      kristaps  418:         */
                    419:
1.29      kristaps  420:        if (MAN_ELINE & m->flags) {
                    421:                m->flags &= ~MAN_ELINE;
1.74      kristaps  422:                if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.29      kristaps  423:                        return(0);
                    424:        }
                    425:
                    426:        if ( ! (MAN_BLINE & m->flags))
1.11      kristaps  427:                return(1);
1.29      kristaps  428:        m->flags &= ~MAN_BLINE;
1.11      kristaps  429:
1.74      kristaps  430:        if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.11      kristaps  431:                return(0);
1.72      kristaps  432:        return(man_body_alloc(m, line, offs, m->last->tok));
1.1       kristaps  433: }
                    434:
                    435:
1.43      kristaps  436: static int
1.72      kristaps  437: macrowarn(struct man *m, int ln, const char *buf, int offs)
1.43      kristaps  438: {
1.74      kristaps  439:        int              rc;
                    440:
                    441:        rc = man_vmsg(m, MANDOCERR_MACRO, ln, offs,
                    442:                        "unknown macro: %s%s",
                    443:                        buf, strlen(buf) > 3 ? "..." : "");
                    444:
                    445:        return(MAN_IGN_MACRO & m->pflags ? rc : 0);
1.43      kristaps  446: }
                    447:
                    448:
1.1       kristaps  449: int
1.72      kristaps  450: man_pmacro(struct man *m, int ln, char *buf, int offs)
1.1       kristaps  451: {
1.58      kristaps  452:        int              i, j, ppos;
1.53      kristaps  453:        enum mant        tok;
1.34      kristaps  454:        char             mac[5];
                    455:        struct man_node *n;
1.1       kristaps  456:
                    457:        /* Comments and empties are quickly ignored. */
                    458:
1.72      kristaps  459:        offs++;
                    460:
                    461:        if ('\0' == buf[offs])
1.46      kristaps  462:                return(1);
1.1       kristaps  463:
1.72      kristaps  464:        i = offs;
1.9       kristaps  465:
1.56      kristaps  466:        /*
                    467:         * Skip whitespace between the control character and initial
                    468:         * text.  "Whitespace" is both spaces and tabs.
                    469:         */
1.62      kristaps  470:
1.57      kristaps  471:        if (' ' == buf[i] || '\t' == buf[i]) {
1.9       kristaps  472:                i++;
1.56      kristaps  473:                while (buf[i] && (' ' == buf[i] || '\t' == buf[i]))
1.1       kristaps  474:                        i++;
1.48      kristaps  475:                if ('\0' == buf[i])
1.11      kristaps  476:                        goto out;
1.1       kristaps  477:        }
                    478:
1.10      kristaps  479:        ppos = i;
                    480:
1.1       kristaps  481:        /* Copy the first word into a nil-terminated buffer. */
                    482:
1.10      kristaps  483:        for (j = 0; j < 4; j++, i++) {
1.48      kristaps  484:                if ('\0' == (mac[j] = buf[i]))
1.1       kristaps  485:                        break;
1.10      kristaps  486:                else if (' ' == buf[i])
1.1       kristaps  487:                        break;
1.38      kristaps  488:
                    489:                /* Check for invalid characters. */
                    490:
                    491:                if (isgraph((u_char)buf[i]))
                    492:                        continue;
1.74      kristaps  493:                if ( ! man_pmsg(m, ln, i, MANDOCERR_BADCHAR))
                    494:                        return(0);
                    495:                i--;
1.1       kristaps  496:        }
                    497:
1.46      kristaps  498:        mac[j] = '\0';
1.1       kristaps  499:
1.9       kristaps  500:        if (j == 4 || j < 1) {
1.74      kristaps  501:                if ( ! macrowarn(m, ln, mac, ppos))
1.7       kristaps  502:                        goto err;
1.12      kristaps  503:                return(1);
1.7       kristaps  504:        }
1.1       kristaps  505:
1.53      kristaps  506:        if (MAN_MAX == (tok = man_hash_find(mac))) {
1.72      kristaps  507:                if ( ! macrowarn(m, ln, mac, ppos))
1.7       kristaps  508:                        goto err;
1.12      kristaps  509:                return(1);
1.1       kristaps  510:        }
                    511:
                    512:        /* The macro is sane.  Jump to the next word. */
                    513:
                    514:        while (buf[i] && ' ' == buf[i])
                    515:                i++;
                    516:
1.62      kristaps  517:        /*
                    518:         * Trailing whitespace.  Note that tabs are allowed to be passed
                    519:         * into the parser as "text", so we only warn about spaces here.
                    520:         */
1.48      kristaps  521:
                    522:        if ('\0' == buf[i] && ' ' == buf[i - 1])
1.74      kristaps  523:                if ( ! man_pmsg(m, ln, i - 1, MANDOCERR_EOLNSPACE))
1.48      kristaps  524:                        goto err;
                    525:
1.50      kristaps  526:        /*
1.51      kristaps  527:         * Remove prior ELINE macro, as it's being clobbering by a new
                    528:         * macro.  Note that NSCOPED macros do not close out ELINE
                    529:         * macros---they don't print text---so we let those slip by.
1.50      kristaps  530:         */
1.34      kristaps  531:
1.53      kristaps  532:        if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
1.51      kristaps  533:                        m->flags & MAN_ELINE) {
                    534:                assert(MAN_TEXT != m->last->type);
                    535:
                    536:                /*
                    537:                 * This occurs in the following construction:
                    538:                 *   .B
                    539:                 *   .br
                    540:                 *   .B
                    541:                 *   .br
                    542:                 *   I hate man macros.
                    543:                 * Flat-out disallow this madness.
                    544:                 */
1.74      kristaps  545:                if (MAN_NSCOPED & man_macros[m->last->tok].flags) {
                    546:                        man_pmsg(m, ln, ppos, MANDOCERR_SYNTLINESCOPE);
                    547:                        return(0);
                    548:                }
1.51      kristaps  549:
1.34      kristaps  550:                n = m->last;
1.51      kristaps  551:
                    552:                assert(n);
1.34      kristaps  553:                assert(NULL == n->child);
1.37      kristaps  554:                assert(0 == n->nchild);
1.51      kristaps  555:
1.74      kristaps  556:                if ( ! man_nmsg(m, n, MANDOCERR_LINESCOPE))
1.34      kristaps  557:                        return(0);
                    558:
1.54      kristaps  559:                man_node_delete(m, n);
1.34      kristaps  560:                m->flags &= ~MAN_ELINE;
                    561:        }
                    562:
1.59      kristaps  563:        /*
                    564:         * Save the fact that we're in the next-line for a block.  In
                    565:         * this way, embedded roff instructions can "remember" state
                    566:         * when they exit.
                    567:         */
                    568:
                    569:        if (MAN_BLINE & m->flags)
                    570:                m->flags |= MAN_BPLINE;
                    571:
                    572:        /* Call to handler... */
1.1       kristaps  573:
1.53      kristaps  574:        assert(man_macros[tok].fp);
                    575:        if ( ! (*man_macros[tok].fp)(m, tok, ln, ppos, &i, buf))
1.1       kristaps  576:                goto err;
                    577:
1.11      kristaps  578: out:
1.50      kristaps  579:        /*
                    580:         * We weren't in a block-line scope when entering the
                    581:         * above-parsed macro, so return.
                    582:         */
                    583:
1.58      kristaps  584:        if ( ! (MAN_BPLINE & m->flags)) {
1.50      kristaps  585:                m->flags &= ~MAN_ILINE;
1.29      kristaps  586:                return(1);
1.50      kristaps  587:        }
1.58      kristaps  588:        m->flags &= ~MAN_BPLINE;
1.50      kristaps  589:
                    590:        /*
                    591:         * If we're in a block scope, then allow this macro to slip by
                    592:         * without closing scope around it.
                    593:         */
                    594:
                    595:        if (MAN_ILINE & m->flags) {
                    596:                m->flags &= ~MAN_ILINE;
                    597:                return(1);
                    598:        }
1.29      kristaps  599:
                    600:        /*
                    601:         * If we've opened a new next-line element scope, then return
                    602:         * now, as the next line will close out the block scope.
                    603:         */
                    604:
                    605:        if (MAN_ELINE & m->flags)
                    606:                return(1);
                    607:
                    608:        /* Close out the block scope opened in the prior line.  */
1.11      kristaps  609:
1.29      kristaps  610:        assert(MAN_BLINE & m->flags);
                    611:        m->flags &= ~MAN_BLINE;
1.11      kristaps  612:
1.74      kristaps  613:        if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
1.29      kristaps  614:                return(0);
1.72      kristaps  615:        return(man_body_alloc(m, ln, offs, m->last->tok));
1.1       kristaps  616:
                    617: err:   /* Error out. */
                    618:
1.2       kristaps  619:        m->flags |= MAN_HALT;
1.1       kristaps  620:        return(0);
                    621: }
1.3       kristaps  622:
1.4       kristaps  623:
                    624: int
1.74      kristaps  625: man_vmsg(struct man *man, enum mandocerr t,
                    626:                int ln, int pos, const char *fmt, ...)
1.4       kristaps  627: {
                    628:        char             buf[256];
                    629:        va_list          ap;
                    630:
                    631:        va_start(ap, fmt);
1.74      kristaps  632:        vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1.4       kristaps  633:        va_end(ap);
1.74      kristaps  634:        return((*man->msg)(t, man->data, ln, pos, buf));
1.51      kristaps  635: }
                    636:
                    637:
1.54      kristaps  638: /*
                    639:  * Unlink a node from its context.  If "m" is provided, the last parse
                    640:  * point will also be adjusted accordingly.
                    641:  */
                    642: static void
1.51      kristaps  643: man_node_unlink(struct man *m, struct man_node *n)
                    644: {
                    645:
1.54      kristaps  646:        /* Adjust siblings. */
                    647:
                    648:        if (n->prev)
1.51      kristaps  649:                n->prev->next = n->next;
1.54      kristaps  650:        if (n->next)
                    651:                n->next->prev = n->prev;
                    652:
                    653:        /* Adjust parent. */
                    654:
                    655:        if (n->parent) {
                    656:                n->parent->nchild--;
                    657:                if (n->parent->child == n)
                    658:                        n->parent->child = n->prev ? n->prev : n->next;
                    659:        }
                    660:
                    661:        /* Adjust parse point, if applicable. */
                    662:
                    663:        if (m && m->last == n) {
                    664:                /*XXX: this can occur when bailing from validation. */
                    665:                /*assert(NULL == n->next);*/
                    666:                if (n->prev) {
1.51      kristaps  667:                        m->last = n->prev;
                    668:                        m->next = MAN_NEXT_SIBLING;
1.54      kristaps  669:                } else {
1.51      kristaps  670:                        m->last = n->parent;
                    671:                        m->next = MAN_NEXT_CHILD;
                    672:                }
                    673:        }
                    674:
1.54      kristaps  675:        if (m && m->first == n)
                    676:                m->first = NULL;
1.23      kristaps  677: }

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