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Annotation of mandoc/mdoc.c, Revision 1.66

1.66    ! kristaps    1: /* $Id: mdoc.c,v 1.65 2009/03/16 22:19:19 kristaps Exp $ */
1.1       kristaps    2: /*
1.66    ! kristaps    3:  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
1.1       kristaps    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 */
1.65      kristaps   77:        "Bro",          "Brc",          "\%C",          "Es",
1.66    ! kristaps   78:        "En",           "Dx"
1.1       kristaps   79:        };
                     80:
                     81: const  char *const __mdoc_argnames[MDOC_ARG_MAX] = {
                     82:        "split",                "nosplit",              "ragged",
                     83:        "unfilled",             "literal",              "file",
                     84:        "offset",               "bullet",               "dash",
                     85:        "hyphen",               "item",                 "enum",
                     86:        "tag",                  "diag",                 "hang",
                     87:        "ohang",                "inset",                "column",
                     88:        "width",                "compact",              "std",
1.52      kristaps   89:        "filled",               "words",                "emphasis",
1.64      kristaps   90:        "symbolic",             "nested"
1.1       kristaps   91:        };
                     92:
                     93: const  char * const *mdoc_macronames = __mdoc_macronames;
                     94: const  char * const *mdoc_argnames = __mdoc_argnames;
                     95:
1.45      kristaps   96:
1.1       kristaps   97: const struct mdoc_node *
1.47      kristaps   98: mdoc_node(const struct mdoc *mdoc)
1.1       kristaps   99: {
                    100:
                    101:        return(mdoc->first);
                    102: }
                    103:
                    104:
1.37      kristaps  105: const struct mdoc_meta *
1.47      kristaps  106: mdoc_meta(const struct mdoc *mdoc)
1.37      kristaps  107: {
                    108:
                    109:        return(&mdoc->meta);
                    110: }
                    111:
                    112:
1.1       kristaps  113: void
1.38      kristaps  114: mdoc_free(struct mdoc *mdoc)
1.34      kristaps  115: {
                    116:
1.38      kristaps  117:        if (mdoc->first)
                    118:                mdoc_node_freelist(mdoc->first);
                    119:        if (mdoc->htab)
                    120:                mdoc_tokhash_free(mdoc->htab);
1.34      kristaps  121:        if (mdoc->meta.title)
                    122:                free(mdoc->meta.title);
                    123:        if (mdoc->meta.os)
                    124:                free(mdoc->meta.os);
                    125:        if (mdoc->meta.name)
                    126:                free(mdoc->meta.name);
1.52      kristaps  127:        if (mdoc->meta.arch)
                    128:                free(mdoc->meta.arch);
                    129:        if (mdoc->meta.vol)
                    130:                free(mdoc->meta.vol);
1.34      kristaps  131:
1.1       kristaps  132:        free(mdoc);
                    133: }
                    134:
                    135:
                    136: struct mdoc *
1.55      kristaps  137: mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb)
1.1       kristaps  138: {
                    139:        struct mdoc     *p;
                    140:
                    141:        p = xcalloc(1, sizeof(struct mdoc));
                    142:
                    143:        p->data = data;
1.33      kristaps  144:        if (cb)
                    145:                (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
1.1       kristaps  146:
1.25      kristaps  147:        p->last = xcalloc(1, sizeof(struct mdoc_node));
                    148:        p->last->type = MDOC_ROOT;
                    149:        p->first = p->last;
1.55      kristaps  150:        p->pflags = pflags;
1.25      kristaps  151:        p->next = MDOC_NEXT_CHILD;
1.4       kristaps  152:        p->htab = mdoc_tokhash_alloc();
1.25      kristaps  153:
1.1       kristaps  154:        return(p);
                    155: }
                    156:
                    157:
                    158: int
1.20      kristaps  159: mdoc_endparse(struct mdoc *mdoc)
                    160: {
                    161:
                    162:        if (MDOC_HALT & mdoc->flags)
                    163:                return(0);
                    164:        if (NULL == mdoc->first)
                    165:                return(1);
                    166:
                    167:        assert(mdoc->last);
                    168:        if ( ! macro_end(mdoc)) {
                    169:                mdoc->flags |= MDOC_HALT;
                    170:                return(0);
                    171:        }
                    172:        return(1);
                    173: }
                    174:
                    175:
1.50      kristaps  176: /*
1.53      kristaps  177:  * Main parse routine.  Parses a single line -- really just hands off to
                    178:  * the macro or text parser.
1.50      kristaps  179:  */
1.20      kristaps  180: int
1.53      kristaps  181: mdoc_parseln(struct mdoc *m, int ln, char *buf)
1.1       kristaps  182: {
                    183:
1.53      kristaps  184:        /* If in error-mode, then we parse no more. */
1.50      kristaps  185:
1.53      kristaps  186:        if (MDOC_HALT & m->flags)
1.20      kristaps  187:                return(0);
1.50      kristaps  188:
1.53      kristaps  189:        return('.' == *buf ? parsemacro(m, ln, buf) :
                    190:                        parsetext(m, ln, buf));
1.1       kristaps  191: }
                    192:
                    193:
                    194: void
1.31      kristaps  195: mdoc_vmsg(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
1.1       kristaps  196: {
1.31      kristaps  197:        char              buf[256];
1.23      kristaps  198:        va_list           ap;
1.1       kristaps  199:
                    200:        if (NULL == mdoc->cb.mdoc_msg)
                    201:                return;
                    202:
                    203:        va_start(ap, fmt);
1.31      kristaps  204:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1.1       kristaps  205:        va_end(ap);
1.31      kristaps  206:        (*mdoc->cb.mdoc_msg)(mdoc->data, ln, pos, buf);
1.1       kristaps  207: }
                    208:
                    209:
                    210: int
1.31      kristaps  211: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
                    212:                const char *fmt, ...)
1.1       kristaps  213: {
1.31      kristaps  214:        char             buf[256];
                    215:        va_list          ap;
1.1       kristaps  216:
                    217:        if (NULL == mdoc->cb.mdoc_err)
                    218:                return(0);
1.31      kristaps  219:
                    220:        va_start(ap, fmt);
                    221:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    222:        va_end(ap);
                    223:        return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1       kristaps  224: }
                    225:
                    226:
                    227: int
1.31      kristaps  228: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos,
                    229:                enum mdoc_warn type, const char *fmt, ...)
1.1       kristaps  230: {
1.31      kristaps  231:        char             buf[256];
                    232:        va_list          ap;
1.1       kristaps  233:
                    234:        if (NULL == mdoc->cb.mdoc_warn)
                    235:                return(0);
1.31      kristaps  236:
                    237:        va_start(ap, fmt);
                    238:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    239:        va_end(ap);
                    240:        return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, type, buf));
1.1       kristaps  241: }
                    242:
                    243:
                    244: int
1.53      kristaps  245: mdoc_macro(struct mdoc *m, int tok,
                    246:                int ln, int pp, int *pos, char *buf)
1.1       kristaps  247: {
                    248:
1.53      kristaps  249:        /* FIXME - these should happen during validation. */
1.31      kristaps  250:
1.44      kristaps  251:        if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
1.53      kristaps  252:                        SEC_PROLOGUE != m->lastnamed)
                    253:                return(mdoc_perr(m, ln, pp,
                    254:                                "disallowed in document body"));
                    255:
1.44      kristaps  256:        if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
1.53      kristaps  257:                        SEC_PROLOGUE == m->lastnamed)
                    258:                return(mdoc_perr(m, ln, pp,
                    259:                                "disallowed in prologue"));
                    260:
                    261:        if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
1.64      kristaps  262:                return(mdoc_perr(m, ln, pp, "%s not callable",
                    263:                                        mdoc_macronames[tok]));
1.53      kristaps  264:
                    265:        return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
1.1       kristaps  266: }
                    267:
                    268:
1.23      kristaps  269: static int
                    270: mdoc_node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1       kristaps  271: {
                    272:
1.25      kristaps  273:        assert(mdoc->last);
                    274:        assert(mdoc->first);
                    275:        assert(MDOC_ROOT != p->type);
1.1       kristaps  276:
1.13      kristaps  277:        switch (mdoc->next) {
                    278:        case (MDOC_NEXT_SIBLING):
1.6       kristaps  279:                mdoc->last->next = p;
                    280:                p->prev = mdoc->last;
1.13      kristaps  281:                p->parent = mdoc->last->parent;
1.1       kristaps  282:                break;
1.13      kristaps  283:        case (MDOC_NEXT_CHILD):
                    284:                mdoc->last->child = p;
1.1       kristaps  285:                p->parent = mdoc->last;
                    286:                break;
                    287:        default:
1.13      kristaps  288:                abort();
                    289:                /* NOTREACHED */
1.1       kristaps  290:        }
                    291:
1.23      kristaps  292:        if ( ! mdoc_valid_pre(mdoc, p))
                    293:                return(0);
1.27      kristaps  294:
                    295:        switch (p->type) {
                    296:        case (MDOC_HEAD):
                    297:                assert(MDOC_BLOCK == p->parent->type);
1.53      kristaps  298:                p->parent->head = p;
1.27      kristaps  299:                break;
                    300:        case (MDOC_TAIL):
                    301:                assert(MDOC_BLOCK == p->parent->type);
1.53      kristaps  302:                p->parent->tail = p;
1.27      kristaps  303:                break;
                    304:        case (MDOC_BODY):
                    305:                assert(MDOC_BLOCK == p->parent->type);
1.53      kristaps  306:                p->parent->body = p;
1.27      kristaps  307:                break;
                    308:        default:
                    309:                break;
                    310:        }
                    311:
1.1       kristaps  312:        mdoc->last = p;
1.23      kristaps  313:        return(1);
1.1       kristaps  314: }
                    315:
                    316:
1.45      kristaps  317: static struct mdoc_node *
1.46      kristaps  318: mdoc_node_alloc(const struct mdoc *mdoc)
1.45      kristaps  319: {
1.46      kristaps  320:        struct mdoc_node *p;
                    321:
                    322:        p = xcalloc(1, sizeof(struct mdoc_node));
                    323:        p->sec = mdoc->lastsec;
1.45      kristaps  324:
1.46      kristaps  325:        return(p);
1.45      kristaps  326: }
                    327:
                    328:
1.23      kristaps  329: int
1.22      kristaps  330: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.17      kristaps  331: {
                    332:        struct mdoc_node *p;
                    333:
                    334:        assert(mdoc->first);
                    335:        assert(mdoc->last);
                    336:
1.46      kristaps  337:        p = mdoc_node_alloc(mdoc);
1.17      kristaps  338:
1.22      kristaps  339:        p->line = line;
                    340:        p->pos = pos;
1.17      kristaps  341:        p->type = MDOC_TAIL;
1.27      kristaps  342:        p->tok = tok;
1.17      kristaps  343:
1.23      kristaps  344:        return(mdoc_node_append(mdoc, p));
1.17      kristaps  345: }
                    346:
                    347:
1.23      kristaps  348: int
1.22      kristaps  349: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1       kristaps  350: {
                    351:        struct mdoc_node *p;
                    352:
                    353:        assert(mdoc->first);
                    354:        assert(mdoc->last);
                    355:
1.46      kristaps  356:        p = mdoc_node_alloc(mdoc);
1.13      kristaps  357:
1.22      kristaps  358:        p->line = line;
                    359:        p->pos = pos;
1.1       kristaps  360:        p->type = MDOC_HEAD;
1.27      kristaps  361:        p->tok = tok;
1.1       kristaps  362:
1.23      kristaps  363:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  364: }
                    365:
                    366:
1.23      kristaps  367: int
1.22      kristaps  368: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1       kristaps  369: {
                    370:        struct mdoc_node *p;
                    371:
                    372:        assert(mdoc->first);
                    373:        assert(mdoc->last);
                    374:
1.46      kristaps  375:        p = mdoc_node_alloc(mdoc);
1.1       kristaps  376:
1.22      kristaps  377:        p->line = line;
                    378:        p->pos = pos;
1.1       kristaps  379:        p->type = MDOC_BODY;
1.27      kristaps  380:        p->tok = tok;
1.1       kristaps  381:
1.23      kristaps  382:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  383: }
                    384:
                    385:
1.23      kristaps  386: int
1.25      kristaps  387: mdoc_root_alloc(struct mdoc *mdoc)
                    388: {
                    389:        struct mdoc_node *p;
                    390:
1.46      kristaps  391:        p = mdoc_node_alloc(mdoc);
1.25      kristaps  392:
                    393:        p->type = MDOC_ROOT;
                    394:
                    395:        return(mdoc_node_append(mdoc, p));
                    396: }
                    397:
                    398:
                    399: int
1.22      kristaps  400: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
1.53      kristaps  401:                int tok, struct mdoc_arg *args)
1.1       kristaps  402: {
                    403:        struct mdoc_node *p;
                    404:
1.46      kristaps  405:        p = mdoc_node_alloc(mdoc);
1.1       kristaps  406:
1.22      kristaps  407:        p->pos = pos;
                    408:        p->line = line;
1.1       kristaps  409:        p->type = MDOC_BLOCK;
1.27      kristaps  410:        p->tok = tok;
1.53      kristaps  411:        p->args = args;
                    412:
                    413:        if (args)
                    414:                (args->refcnt)++;
1.1       kristaps  415:
1.23      kristaps  416:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  417: }
                    418:
                    419:
1.23      kristaps  420: int
1.22      kristaps  421: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
1.53      kristaps  422:                int tok, struct mdoc_arg *args)
1.1       kristaps  423: {
                    424:        struct mdoc_node *p;
                    425:
1.46      kristaps  426:        p = mdoc_node_alloc(mdoc);
1.22      kristaps  427:
                    428:        p->line = line;
                    429:        p->pos = pos;
1.1       kristaps  430:        p->type = MDOC_ELEM;
1.27      kristaps  431:        p->tok = tok;
1.53      kristaps  432:        p->args = args;
                    433:
                    434:        if (args)
                    435:                (args->refcnt)++;
1.1       kristaps  436:
1.23      kristaps  437:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  438: }
                    439:
                    440:
1.23      kristaps  441: int
1.22      kristaps  442: mdoc_word_alloc(struct mdoc *mdoc,
                    443:                int line, int pos, const char *word)
1.1       kristaps  444: {
                    445:        struct mdoc_node *p;
                    446:
1.46      kristaps  447:        p = mdoc_node_alloc(mdoc);
1.45      kristaps  448:
1.22      kristaps  449:        p->line = line;
                    450:        p->pos = pos;
1.1       kristaps  451:        p->type = MDOC_TEXT;
1.53      kristaps  452:        p->string = xstrdup(word);
1.1       kristaps  453:
1.23      kristaps  454:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  455: }
                    456:
                    457:
1.53      kristaps  458: void
                    459: mdoc_node_free(struct mdoc_node *p)
1.1       kristaps  460: {
                    461:
1.53      kristaps  462:        if (p->string)
                    463:                free(p->string);
                    464:        if (p->args)
                    465:                mdoc_argv_free(p->args);
1.1       kristaps  466:        free(p);
                    467: }
                    468:
                    469:
1.53      kristaps  470: void
                    471: mdoc_node_freelist(struct mdoc_node *p)
1.1       kristaps  472: {
                    473:
1.53      kristaps  474:        if (p->child)
                    475:                mdoc_node_freelist(p->child);
                    476:        if (p->next)
                    477:                mdoc_node_freelist(p->next);
1.1       kristaps  478:
1.53      kristaps  479:        mdoc_node_free(p);
1.1       kristaps  480: }
                    481:
                    482:
1.53      kristaps  483: /*
                    484:  * Parse free-form text, that is, a line that does not begin with the
                    485:  * control character.
                    486:  */
                    487: static int
                    488: parsetext(struct mdoc *mdoc, int line, char *buf)
1.1       kristaps  489: {
                    490:
1.53      kristaps  491:        if (SEC_PROLOGUE == mdoc->lastnamed)
                    492:                return(mdoc_perr(mdoc, line, 0,
                    493:                        "text disallowed in prologue"));
1.1       kristaps  494:
1.53      kristaps  495:        if ( ! mdoc_word_alloc(mdoc, line, 0, buf))
                    496:                return(0);
1.1       kristaps  497:
1.53      kristaps  498:        mdoc->next = MDOC_NEXT_SIBLING;
                    499:        return(1);
1.1       kristaps  500: }
                    501:
                    502:
1.58      kristaps  503: static int
                    504: macrowarn(struct mdoc *m, int ln, const char *buf)
                    505: {
                    506:        if ( ! (MDOC_IGN_MACRO & m->pflags))
                    507:                return(mdoc_perr(m, ln, 1, "unknown macro: %s%s",
1.59      kristaps  508:                                buf, strlen(buf) > 3 ? "..." : ""));
1.58      kristaps  509:        return(mdoc_pwarn(m, ln, 1, WARN_SYNTAX,
                    510:                                "unknown macro: %s%s",
1.59      kristaps  511:                                buf, strlen(buf) > 3 ? "..." : ""));
1.58      kristaps  512: }
                    513:
                    514:
                    515:
1.53      kristaps  516: /*
                    517:  * Parse a macro line, that is, a line beginning with the control
                    518:  * character.
                    519:  */
                    520: int
                    521: parsemacro(struct mdoc *m, int ln, char *buf)
1.1       kristaps  522: {
1.53      kristaps  523:        int               i, c;
                    524:        char              mac[5];
1.1       kristaps  525:
1.63      kristaps  526:        /* Comments and empties are quickly ignored. */
                    527:
                    528:        if (0 == buf[1])
                    529:                return(1);
                    530:
1.65      kristaps  531:        if (' ' == buf[1]) {
1.63      kristaps  532:                i = 2;
1.65      kristaps  533:                while (buf[i] && ' ' == buf[i])
1.63      kristaps  534:                        i++;
                    535:                if (0 == buf[i])
                    536:                        return(1);
                    537:                return(mdoc_perr(m, ln, 1, "invalid syntax"));
                    538:        }
1.1       kristaps  539:
1.53      kristaps  540:        if (buf[1] && '\\' == buf[1])
                    541:                if (buf[2] && '\"' == buf[2])
                    542:                        return(1);
1.1       kristaps  543:
1.53      kristaps  544:        /* Copy the first word into a nil-terminated buffer. */
1.1       kristaps  545:
1.53      kristaps  546:        for (i = 1; i < 5; i++) {
                    547:                if (0 == (mac[i - 1] = buf[i]))
                    548:                        break;
1.65      kristaps  549:                else if (' ' == buf[i])
1.53      kristaps  550:                        break;
                    551:        }
1.1       kristaps  552:
1.53      kristaps  553:        mac[i - 1] = 0;
1.1       kristaps  554:
1.53      kristaps  555:        if (i == 5 || i <= 2) {
1.58      kristaps  556:                if ( ! macrowarn(m, ln, mac))
                    557:                        goto err;
                    558:                return(1);
1.53      kristaps  559:        }
                    560:
                    561:        if (MDOC_MAX == (c = mdoc_tokhash_find(m->htab, mac))) {
1.58      kristaps  562:                if ( ! macrowarn(m, ln, mac))
                    563:                        goto err;
                    564:                return(1);
1.53      kristaps  565:        }
1.1       kristaps  566:
1.53      kristaps  567:        /* The macro is sane.  Jump to the next word. */
1.1       kristaps  568:
1.65      kristaps  569:        while (buf[i] && ' ' == buf[i])
1.53      kristaps  570:                i++;
1.1       kristaps  571:
1.53      kristaps  572:        /* Begin recursive parse sequence. */
1.1       kristaps  573:
1.53      kristaps  574:        if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
                    575:                goto err;
1.1       kristaps  576:
1.53      kristaps  577:        return(1);
1.1       kristaps  578:
1.53      kristaps  579: err:   /* Error out. */
1.1       kristaps  580:
1.53      kristaps  581:        m->flags |= MDOC_HALT;
                    582:        return(0);
1.1       kristaps  583: }

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