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Annotation of mandoc/mdoc.c, Revision 1.64

1.64    ! kristaps    1: /* $Id: mdoc.c,v 1.63 2009/03/12 15:55:11 kristaps Exp $ */
1.1       kristaps    2: /*
                      3:  * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
                      4:  *
                      5:  * Permission to use, copy, modify, and distribute this software for any
                      6:  * purpose with or without fee is hereby granted, provided that the
                      7:  * above copyright notice and this permission notice appear in all
                      8:  * copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
                     11:  * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
                     12:  * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
                     13:  * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
                     14:  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
                     15:  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
                     16:  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
                     17:  * PERFORMANCE OF THIS SOFTWARE.
                     18:  */
                     19: #include <assert.h>
                     20: #include <ctype.h>
                     21: #include <err.h>
                     22: #include <stdarg.h>
                     23: #include <stdlib.h>
                     24: #include <stdio.h>
                     25: #include <string.h>
                     26:
                     27: #include "private.h"
                     28:
1.41      kristaps   29: /*
                     30:  * Main caller in the libmdoc library.  This begins the parsing routine,
                     31:  * handles allocation of data, and so forth.  Most of the "work" is done
1.48      kristaps   32:  * in macro.c and validate.c.
1.41      kristaps   33:  */
                     34:
1.48      kristaps   35: static struct mdoc_node *mdoc_node_alloc(const struct mdoc *);
                     36: static int               mdoc_node_append(struct mdoc *,
                     37:                                struct mdoc_node *);
1.53      kristaps   38:
                     39: static int               parsetext(struct mdoc *, int, char *);
                     40: static int               parsemacro(struct mdoc *, int, char *);
1.58      kristaps   41: static int               macrowarn(struct mdoc *, int, const char *);
1.48      kristaps   42:
                     43:
1.1       kristaps   44: const  char *const __mdoc_macronames[MDOC_MAX] = {
                     45:        "\\\"",         "Dd",           "Dt",           "Os",
                     46:        "Sh",           "Ss",           "Pp",           "D1",
                     47:        "Dl",           "Bd",           "Ed",           "Bl",
                     48:        "El",           "It",           "Ad",           "An",
                     49:        "Ar",           "Cd",           "Cm",           "Dv",
                     50:        "Er",           "Ev",           "Ex",           "Fa",
                     51:        "Fd",           "Fl",           "Fn",           "Ft",
                     52:        "Ic",           "In",           "Li",           "Nd",
                     53:        "Nm",           "Op",           "Ot",           "Pa",
                     54:        "Rv",           "St",           "Va",           "Vt",
                     55:        /* LINTED */
                     56:        "Xr",           "\%A",          "\%B",          "\%D",
                     57:        /* LINTED */
                     58:        "\%I",          "\%J",          "\%N",          "\%O",
                     59:        /* LINTED */
                     60:        "\%P",          "\%R",          "\%T",          "\%V",
                     61:        "Ac",           "Ao",           "Aq",           "At",
                     62:        "Bc",           "Bf",           "Bo",           "Bq",
                     63:        "Bsx",          "Bx",           "Db",           "Dc",
                     64:        "Do",           "Dq",           "Ec",           "Ef",
                     65:        "Em",           "Eo",           "Fx",           "Ms",
                     66:        "No",           "Ns",           "Nx",           "Ox",
                     67:        "Pc",           "Pf",           "Po",           "Pq",
                     68:        "Qc",           "Ql",           "Qo",           "Qq",
                     69:        "Re",           "Rs",           "Sc",           "So",
                     70:        "Sq",           "Sm",           "Sx",           "Sy",
                     71:        "Tn",           "Ux",           "Xc",           "Xo",
                     72:        "Fo",           "Fc",           "Oo",           "Oc",
                     73:        "Bk",           "Ek",           "Bt",           "Hf",
1.57      kristaps   74:        "Fr",           "Ud",           "Lb",           "Ap",
1.61      kristaps   75:        "Lp",           "Lk",           "Mt",           "Brq",
1.64    ! kristaps   76:        /* LINTED */
        !            77:        "Bro",          "Brc",          "\%C"
1.1       kristaps   78:        };
                     79:
                     80: const  char *const __mdoc_argnames[MDOC_ARG_MAX] = {
                     81:        "split",                "nosplit",              "ragged",
                     82:        "unfilled",             "literal",              "file",
                     83:        "offset",               "bullet",               "dash",
                     84:        "hyphen",               "item",                 "enum",
                     85:        "tag",                  "diag",                 "hang",
                     86:        "ohang",                "inset",                "column",
                     87:        "width",                "compact",              "std",
1.52      kristaps   88:        "filled",               "words",                "emphasis",
1.64    ! kristaps   89:        "symbolic",             "nested"
1.1       kristaps   90:        };
                     91:
                     92: const  char * const *mdoc_macronames = __mdoc_macronames;
                     93: const  char * const *mdoc_argnames = __mdoc_argnames;
                     94:
1.45      kristaps   95:
1.1       kristaps   96: const struct mdoc_node *
1.47      kristaps   97: mdoc_node(const struct mdoc *mdoc)
1.1       kristaps   98: {
                     99:
                    100:        return(mdoc->first);
                    101: }
                    102:
                    103:
1.37      kristaps  104: const struct mdoc_meta *
1.47      kristaps  105: mdoc_meta(const struct mdoc *mdoc)
1.37      kristaps  106: {
                    107:
                    108:        return(&mdoc->meta);
                    109: }
                    110:
                    111:
1.1       kristaps  112: void
1.38      kristaps  113: mdoc_free(struct mdoc *mdoc)
1.34      kristaps  114: {
                    115:
1.38      kristaps  116:        if (mdoc->first)
                    117:                mdoc_node_freelist(mdoc->first);
                    118:        if (mdoc->htab)
                    119:                mdoc_tokhash_free(mdoc->htab);
1.34      kristaps  120:        if (mdoc->meta.title)
                    121:                free(mdoc->meta.title);
                    122:        if (mdoc->meta.os)
                    123:                free(mdoc->meta.os);
                    124:        if (mdoc->meta.name)
                    125:                free(mdoc->meta.name);
1.52      kristaps  126:        if (mdoc->meta.arch)
                    127:                free(mdoc->meta.arch);
                    128:        if (mdoc->meta.vol)
                    129:                free(mdoc->meta.vol);
1.34      kristaps  130:
1.1       kristaps  131:        free(mdoc);
                    132: }
                    133:
                    134:
                    135: struct mdoc *
1.55      kristaps  136: mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb)
1.1       kristaps  137: {
                    138:        struct mdoc     *p;
                    139:
                    140:        p = xcalloc(1, sizeof(struct mdoc));
                    141:
                    142:        p->data = data;
1.33      kristaps  143:        if (cb)
                    144:                (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
1.1       kristaps  145:
1.25      kristaps  146:        p->last = xcalloc(1, sizeof(struct mdoc_node));
                    147:        p->last->type = MDOC_ROOT;
                    148:        p->first = p->last;
1.55      kristaps  149:        p->pflags = pflags;
1.25      kristaps  150:        p->next = MDOC_NEXT_CHILD;
1.4       kristaps  151:        p->htab = mdoc_tokhash_alloc();
1.25      kristaps  152:
1.1       kristaps  153:        return(p);
                    154: }
                    155:
                    156:
                    157: int
1.20      kristaps  158: mdoc_endparse(struct mdoc *mdoc)
                    159: {
                    160:
                    161:        if (MDOC_HALT & mdoc->flags)
                    162:                return(0);
                    163:        if (NULL == mdoc->first)
                    164:                return(1);
                    165:
                    166:        assert(mdoc->last);
                    167:        if ( ! macro_end(mdoc)) {
                    168:                mdoc->flags |= MDOC_HALT;
                    169:                return(0);
                    170:        }
                    171:        return(1);
                    172: }
                    173:
                    174:
1.50      kristaps  175: /*
1.53      kristaps  176:  * Main parse routine.  Parses a single line -- really just hands off to
                    177:  * the macro or text parser.
1.50      kristaps  178:  */
1.20      kristaps  179: int
1.53      kristaps  180: mdoc_parseln(struct mdoc *m, int ln, char *buf)
1.1       kristaps  181: {
                    182:
1.53      kristaps  183:        /* If in error-mode, then we parse no more. */
1.50      kristaps  184:
1.53      kristaps  185:        if (MDOC_HALT & m->flags)
1.20      kristaps  186:                return(0);
1.50      kristaps  187:
1.53      kristaps  188:        return('.' == *buf ? parsemacro(m, ln, buf) :
                    189:                        parsetext(m, ln, buf));
1.1       kristaps  190: }
                    191:
                    192:
                    193: void
1.31      kristaps  194: mdoc_vmsg(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
1.1       kristaps  195: {
1.31      kristaps  196:        char              buf[256];
1.23      kristaps  197:        va_list           ap;
1.1       kristaps  198:
                    199:        if (NULL == mdoc->cb.mdoc_msg)
                    200:                return;
                    201:
                    202:        va_start(ap, fmt);
1.31      kristaps  203:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1.1       kristaps  204:        va_end(ap);
1.31      kristaps  205:        (*mdoc->cb.mdoc_msg)(mdoc->data, ln, pos, buf);
1.1       kristaps  206: }
                    207:
                    208:
                    209: int
1.31      kristaps  210: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
                    211:                const char *fmt, ...)
1.1       kristaps  212: {
1.31      kristaps  213:        char             buf[256];
                    214:        va_list          ap;
1.1       kristaps  215:
                    216:        if (NULL == mdoc->cb.mdoc_err)
                    217:                return(0);
1.31      kristaps  218:
                    219:        va_start(ap, fmt);
                    220:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    221:        va_end(ap);
                    222:        return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1       kristaps  223: }
                    224:
                    225:
                    226: int
1.31      kristaps  227: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos,
                    228:                enum mdoc_warn type, const char *fmt, ...)
1.1       kristaps  229: {
1.31      kristaps  230:        char             buf[256];
                    231:        va_list          ap;
1.1       kristaps  232:
                    233:        if (NULL == mdoc->cb.mdoc_warn)
                    234:                return(0);
1.31      kristaps  235:
                    236:        va_start(ap, fmt);
                    237:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    238:        va_end(ap);
                    239:        return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, type, buf));
1.1       kristaps  240: }
                    241:
                    242:
                    243: int
1.53      kristaps  244: mdoc_macro(struct mdoc *m, int tok,
                    245:                int ln, int pp, int *pos, char *buf)
1.1       kristaps  246: {
                    247:
1.53      kristaps  248:        /* FIXME - these should happen during validation. */
1.31      kristaps  249:
1.44      kristaps  250:        if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
1.53      kristaps  251:                        SEC_PROLOGUE != m->lastnamed)
                    252:                return(mdoc_perr(m, ln, pp,
                    253:                                "disallowed in document body"));
                    254:
1.44      kristaps  255:        if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
1.53      kristaps  256:                        SEC_PROLOGUE == m->lastnamed)
                    257:                return(mdoc_perr(m, ln, pp,
                    258:                                "disallowed in prologue"));
                    259:
                    260:        if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
1.64    ! kristaps  261:                return(mdoc_perr(m, ln, pp, "%s not callable",
        !           262:                                        mdoc_macronames[tok]));
1.53      kristaps  263:
                    264:        return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
1.1       kristaps  265: }
                    266:
                    267:
1.23      kristaps  268: static int
                    269: mdoc_node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1       kristaps  270: {
                    271:
1.25      kristaps  272:        assert(mdoc->last);
                    273:        assert(mdoc->first);
                    274:        assert(MDOC_ROOT != p->type);
1.1       kristaps  275:
1.13      kristaps  276:        switch (mdoc->next) {
                    277:        case (MDOC_NEXT_SIBLING):
1.6       kristaps  278:                mdoc->last->next = p;
                    279:                p->prev = mdoc->last;
1.13      kristaps  280:                p->parent = mdoc->last->parent;
1.1       kristaps  281:                break;
1.13      kristaps  282:        case (MDOC_NEXT_CHILD):
                    283:                mdoc->last->child = p;
1.1       kristaps  284:                p->parent = mdoc->last;
                    285:                break;
                    286:        default:
1.13      kristaps  287:                abort();
                    288:                /* NOTREACHED */
1.1       kristaps  289:        }
                    290:
1.23      kristaps  291:        if ( ! mdoc_valid_pre(mdoc, p))
                    292:                return(0);
1.27      kristaps  293:
                    294:        switch (p->type) {
                    295:        case (MDOC_HEAD):
                    296:                assert(MDOC_BLOCK == p->parent->type);
1.53      kristaps  297:                p->parent->head = p;
1.27      kristaps  298:                break;
                    299:        case (MDOC_TAIL):
                    300:                assert(MDOC_BLOCK == p->parent->type);
1.53      kristaps  301:                p->parent->tail = p;
1.27      kristaps  302:                break;
                    303:        case (MDOC_BODY):
                    304:                assert(MDOC_BLOCK == p->parent->type);
1.53      kristaps  305:                p->parent->body = p;
1.27      kristaps  306:                break;
                    307:        default:
                    308:                break;
                    309:        }
                    310:
1.1       kristaps  311:        mdoc->last = p;
1.23      kristaps  312:        return(1);
1.1       kristaps  313: }
                    314:
                    315:
1.45      kristaps  316: static struct mdoc_node *
1.46      kristaps  317: mdoc_node_alloc(const struct mdoc *mdoc)
1.45      kristaps  318: {
1.46      kristaps  319:        struct mdoc_node *p;
                    320:
                    321:        p = xcalloc(1, sizeof(struct mdoc_node));
                    322:        p->sec = mdoc->lastsec;
1.45      kristaps  323:
1.46      kristaps  324:        return(p);
1.45      kristaps  325: }
                    326:
                    327:
1.23      kristaps  328: int
1.22      kristaps  329: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.17      kristaps  330: {
                    331:        struct mdoc_node *p;
                    332:
                    333:        assert(mdoc->first);
                    334:        assert(mdoc->last);
                    335:
1.46      kristaps  336:        p = mdoc_node_alloc(mdoc);
1.17      kristaps  337:
1.22      kristaps  338:        p->line = line;
                    339:        p->pos = pos;
1.17      kristaps  340:        p->type = MDOC_TAIL;
1.27      kristaps  341:        p->tok = tok;
1.17      kristaps  342:
1.23      kristaps  343:        return(mdoc_node_append(mdoc, p));
1.17      kristaps  344: }
                    345:
                    346:
1.23      kristaps  347: int
1.22      kristaps  348: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1       kristaps  349: {
                    350:        struct mdoc_node *p;
                    351:
                    352:        assert(mdoc->first);
                    353:        assert(mdoc->last);
                    354:
1.46      kristaps  355:        p = mdoc_node_alloc(mdoc);
1.13      kristaps  356:
1.22      kristaps  357:        p->line = line;
                    358:        p->pos = pos;
1.1       kristaps  359:        p->type = MDOC_HEAD;
1.27      kristaps  360:        p->tok = tok;
1.1       kristaps  361:
1.23      kristaps  362:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  363: }
                    364:
                    365:
1.23      kristaps  366: int
1.22      kristaps  367: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1       kristaps  368: {
                    369:        struct mdoc_node *p;
                    370:
                    371:        assert(mdoc->first);
                    372:        assert(mdoc->last);
                    373:
1.46      kristaps  374:        p = mdoc_node_alloc(mdoc);
1.1       kristaps  375:
1.22      kristaps  376:        p->line = line;
                    377:        p->pos = pos;
1.1       kristaps  378:        p->type = MDOC_BODY;
1.27      kristaps  379:        p->tok = tok;
1.1       kristaps  380:
1.23      kristaps  381:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  382: }
                    383:
                    384:
1.23      kristaps  385: int
1.25      kristaps  386: mdoc_root_alloc(struct mdoc *mdoc)
                    387: {
                    388:        struct mdoc_node *p;
                    389:
1.46      kristaps  390:        p = mdoc_node_alloc(mdoc);
1.25      kristaps  391:
                    392:        p->type = MDOC_ROOT;
                    393:
                    394:        return(mdoc_node_append(mdoc, p));
                    395: }
                    396:
                    397:
                    398: int
1.22      kristaps  399: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
1.53      kristaps  400:                int tok, struct mdoc_arg *args)
1.1       kristaps  401: {
                    402:        struct mdoc_node *p;
                    403:
1.46      kristaps  404:        p = mdoc_node_alloc(mdoc);
1.1       kristaps  405:
1.22      kristaps  406:        p->pos = pos;
                    407:        p->line = line;
1.1       kristaps  408:        p->type = MDOC_BLOCK;
1.27      kristaps  409:        p->tok = tok;
1.53      kristaps  410:        p->args = args;
                    411:
                    412:        if (args)
                    413:                (args->refcnt)++;
1.1       kristaps  414:
1.23      kristaps  415:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  416: }
                    417:
                    418:
1.23      kristaps  419: int
1.22      kristaps  420: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
1.53      kristaps  421:                int tok, struct mdoc_arg *args)
1.1       kristaps  422: {
                    423:        struct mdoc_node *p;
                    424:
1.46      kristaps  425:        p = mdoc_node_alloc(mdoc);
1.22      kristaps  426:
                    427:        p->line = line;
                    428:        p->pos = pos;
1.1       kristaps  429:        p->type = MDOC_ELEM;
1.27      kristaps  430:        p->tok = tok;
1.53      kristaps  431:        p->args = args;
                    432:
                    433:        if (args)
                    434:                (args->refcnt)++;
1.1       kristaps  435:
1.23      kristaps  436:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  437: }
                    438:
                    439:
1.23      kristaps  440: int
1.22      kristaps  441: mdoc_word_alloc(struct mdoc *mdoc,
                    442:                int line, int pos, const char *word)
1.1       kristaps  443: {
                    444:        struct mdoc_node *p;
                    445:
1.46      kristaps  446:        p = mdoc_node_alloc(mdoc);
1.45      kristaps  447:
1.22      kristaps  448:        p->line = line;
                    449:        p->pos = pos;
1.1       kristaps  450:        p->type = MDOC_TEXT;
1.53      kristaps  451:        p->string = xstrdup(word);
1.1       kristaps  452:
1.23      kristaps  453:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  454: }
                    455:
                    456:
1.53      kristaps  457: void
                    458: mdoc_node_free(struct mdoc_node *p)
1.1       kristaps  459: {
                    460:
1.53      kristaps  461:        if (p->string)
                    462:                free(p->string);
                    463:        if (p->args)
                    464:                mdoc_argv_free(p->args);
1.1       kristaps  465:        free(p);
                    466: }
                    467:
                    468:
1.53      kristaps  469: void
                    470: mdoc_node_freelist(struct mdoc_node *p)
1.1       kristaps  471: {
                    472:
1.53      kristaps  473:        if (p->child)
                    474:                mdoc_node_freelist(p->child);
                    475:        if (p->next)
                    476:                mdoc_node_freelist(p->next);
1.1       kristaps  477:
1.53      kristaps  478:        mdoc_node_free(p);
1.1       kristaps  479: }
                    480:
                    481:
1.53      kristaps  482: /*
                    483:  * Parse free-form text, that is, a line that does not begin with the
                    484:  * control character.
                    485:  */
                    486: static int
                    487: parsetext(struct mdoc *mdoc, int line, char *buf)
1.1       kristaps  488: {
                    489:
1.53      kristaps  490:        if (SEC_PROLOGUE == mdoc->lastnamed)
                    491:                return(mdoc_perr(mdoc, line, 0,
                    492:                        "text disallowed in prologue"));
1.1       kristaps  493:
1.53      kristaps  494:        if ( ! mdoc_word_alloc(mdoc, line, 0, buf))
                    495:                return(0);
1.1       kristaps  496:
1.53      kristaps  497:        mdoc->next = MDOC_NEXT_SIBLING;
                    498:        return(1);
1.1       kristaps  499: }
                    500:
                    501:
1.58      kristaps  502: static int
                    503: macrowarn(struct mdoc *m, int ln, const char *buf)
                    504: {
                    505:        if ( ! (MDOC_IGN_MACRO & m->pflags))
                    506:                return(mdoc_perr(m, ln, 1, "unknown macro: %s%s",
1.59      kristaps  507:                                buf, strlen(buf) > 3 ? "..." : ""));
1.58      kristaps  508:        return(mdoc_pwarn(m, ln, 1, WARN_SYNTAX,
                    509:                                "unknown macro: %s%s",
1.59      kristaps  510:                                buf, strlen(buf) > 3 ? "..." : ""));
1.58      kristaps  511: }
                    512:
                    513:
                    514:
1.53      kristaps  515: /*
                    516:  * Parse a macro line, that is, a line beginning with the control
                    517:  * character.
                    518:  */
                    519: int
                    520: parsemacro(struct mdoc *m, int ln, char *buf)
1.1       kristaps  521: {
1.53      kristaps  522:        int               i, c;
                    523:        char              mac[5];
1.1       kristaps  524:
1.63      kristaps  525:        /* Comments and empties are quickly ignored. */
                    526:
                    527:        if (0 == buf[1])
                    528:                return(1);
                    529:
                    530:        if (isspace((unsigned char)buf[1])) {
                    531:                i = 2;
                    532:                while (buf[i] && isspace((unsigned char)buf[i]))
                    533:                        i++;
                    534:                if (0 == buf[i])
                    535:                        return(1);
                    536:                return(mdoc_perr(m, ln, 1, "invalid syntax"));
                    537:        }
1.1       kristaps  538:
1.53      kristaps  539:        if (buf[1] && '\\' == buf[1])
                    540:                if (buf[2] && '\"' == buf[2])
                    541:                        return(1);
1.1       kristaps  542:
1.53      kristaps  543:        /* Copy the first word into a nil-terminated buffer. */
1.1       kristaps  544:
1.53      kristaps  545:        for (i = 1; i < 5; i++) {
                    546:                if (0 == (mac[i - 1] = buf[i]))
                    547:                        break;
                    548:                else if (isspace((unsigned char)buf[i]))
                    549:                        break;
                    550:        }
1.1       kristaps  551:
1.53      kristaps  552:        mac[i - 1] = 0;
1.1       kristaps  553:
1.53      kristaps  554:        if (i == 5 || i <= 2) {
1.58      kristaps  555:                if ( ! macrowarn(m, ln, mac))
                    556:                        goto err;
                    557:                return(1);
1.53      kristaps  558:        }
                    559:
                    560:        if (MDOC_MAX == (c = mdoc_tokhash_find(m->htab, mac))) {
1.58      kristaps  561:                if ( ! macrowarn(m, ln, mac))
                    562:                        goto err;
                    563:                return(1);
1.53      kristaps  564:        }
1.1       kristaps  565:
1.53      kristaps  566:        /* The macro is sane.  Jump to the next word. */
1.1       kristaps  567:
1.53      kristaps  568:        while (buf[i] && isspace((unsigned char)buf[i]))
                    569:                i++;
1.1       kristaps  570:
1.53      kristaps  571:        /* Begin recursive parse sequence. */
1.1       kristaps  572:
1.53      kristaps  573:        if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
                    574:                goto err;
1.1       kristaps  575:
1.53      kristaps  576:        return(1);
1.1       kristaps  577:
1.53      kristaps  578: err:   /* Error out. */
1.1       kristaps  579:
1.53      kristaps  580:        m->flags |= MDOC_HALT;
                    581:        return(0);
1.1       kristaps  582: }

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