[BACK]Return to mdoc.c CVS log [TXT][DIR] Up to [cvsweb.bsd.lv] / mandoc

Annotation of mandoc/mdoc.c, Revision 1.74

1.74    ! kristaps    1: /* $Id: mdoc.c,v 1.73 2009/03/31 13:50:19 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 <stdarg.h>
1.73      kristaps   22: #include <stdio.h>
1.1       kristaps   23: #include <stdlib.h>
                     24: #include <string.h>
                     25:
1.70      kristaps   26: #include "libmdoc.h"
1.1       kristaps   27:
1.73      kristaps   28: enum   merr {
                     29:        ENOCALL,
                     30:        EBODYPROL,
                     31:        EPROLBODY,
                     32:        ESPACE,
                     33:        ETEXTPROL,
                     34:        ENOBLANK,
                     35:        EMALLOC
                     36: };
1.41      kristaps   37:
1.1       kristaps   38: const  char *const __mdoc_macronames[MDOC_MAX] = {
                     39:        "\\\"",         "Dd",           "Dt",           "Os",
                     40:        "Sh",           "Ss",           "Pp",           "D1",
                     41:        "Dl",           "Bd",           "Ed",           "Bl",
                     42:        "El",           "It",           "Ad",           "An",
                     43:        "Ar",           "Cd",           "Cm",           "Dv",
                     44:        "Er",           "Ev",           "Ex",           "Fa",
                     45:        "Fd",           "Fl",           "Fn",           "Ft",
                     46:        "Ic",           "In",           "Li",           "Nd",
                     47:        "Nm",           "Op",           "Ot",           "Pa",
                     48:        "Rv",           "St",           "Va",           "Vt",
                     49:        /* LINTED */
                     50:        "Xr",           "\%A",          "\%B",          "\%D",
                     51:        /* LINTED */
                     52:        "\%I",          "\%J",          "\%N",          "\%O",
                     53:        /* LINTED */
                     54:        "\%P",          "\%R",          "\%T",          "\%V",
                     55:        "Ac",           "Ao",           "Aq",           "At",
                     56:        "Bc",           "Bf",           "Bo",           "Bq",
                     57:        "Bsx",          "Bx",           "Db",           "Dc",
                     58:        "Do",           "Dq",           "Ec",           "Ef",
                     59:        "Em",           "Eo",           "Fx",           "Ms",
                     60:        "No",           "Ns",           "Nx",           "Ox",
                     61:        "Pc",           "Pf",           "Po",           "Pq",
                     62:        "Qc",           "Ql",           "Qo",           "Qq",
                     63:        "Re",           "Rs",           "Sc",           "So",
                     64:        "Sq",           "Sm",           "Sx",           "Sy",
                     65:        "Tn",           "Ux",           "Xc",           "Xo",
                     66:        "Fo",           "Fc",           "Oo",           "Oc",
                     67:        "Bk",           "Ek",           "Bt",           "Hf",
1.57      kristaps   68:        "Fr",           "Ud",           "Lb",           "Ap",
1.61      kristaps   69:        "Lp",           "Lk",           "Mt",           "Brq",
1.64      kristaps   70:        /* LINTED */
1.65      kristaps   71:        "Bro",          "Brc",          "\%C",          "Es",
1.69      kristaps   72:        /* LINTED */
                     73:        "En",           "Dx",           "\%Q"
1.1       kristaps   74:        };
                     75:
                     76: const  char *const __mdoc_argnames[MDOC_ARG_MAX] = {
                     77:        "split",                "nosplit",              "ragged",
                     78:        "unfilled",             "literal",              "file",
                     79:        "offset",               "bullet",               "dash",
                     80:        "hyphen",               "item",                 "enum",
                     81:        "tag",                  "diag",                 "hang",
                     82:        "ohang",                "inset",                "column",
                     83:        "width",                "compact",              "std",
1.52      kristaps   84:        "filled",               "words",                "emphasis",
1.64      kristaps   85:        "symbolic",             "nested"
1.1       kristaps   86:        };
                     87:
                     88: const  char * const *mdoc_macronames = __mdoc_macronames;
                     89: const  char * const *mdoc_argnames = __mdoc_argnames;
                     90:
1.73      kristaps   91: static void              mdoc_free1(struct mdoc *);
                     92: static int               mdoc_alloc1(struct mdoc *);
                     93: static struct mdoc_node *node_alloc(struct mdoc *, int, int,
                     94:                                int, enum mdoc_type);
                     95: static int               node_append(struct mdoc *,
1.71      kristaps   96:                                struct mdoc_node *);
                     97: static int               parsetext(struct mdoc *, int, char *);
                     98: static int               parsemacro(struct mdoc *, int, char *);
                     99: static int               macrowarn(struct mdoc *, int, const char *);
1.73      kristaps  100: static int               perr(struct mdoc *, int, int, enum merr);
1.71      kristaps  101:
1.73      kristaps  102: #define verr(m, t) perr((m), (m)->last->line, (m)->last->pos, (t))
1.45      kristaps  103:
1.68      kristaps  104: /*
                    105:  * Get the first (root) node of the parse tree.
                    106:  */
1.1       kristaps  107: const struct mdoc_node *
1.71      kristaps  108: mdoc_node(const struct mdoc *m)
1.1       kristaps  109: {
                    110:
1.71      kristaps  111:        return(MDOC_HALT & m->flags ? NULL : m->first);
1.1       kristaps  112: }
                    113:
                    114:
1.37      kristaps  115: const struct mdoc_meta *
1.71      kristaps  116: mdoc_meta(const struct mdoc *m)
1.37      kristaps  117: {
                    118:
1.71      kristaps  119:        return(MDOC_HALT & m->flags ? NULL : &m->meta);
1.37      kristaps  120: }
                    121:
                    122:
1.73      kristaps  123: static void
                    124: mdoc_free1(struct mdoc *mdoc)
1.67      kristaps  125: {
                    126:
                    127:        if (mdoc->first)
                    128:                mdoc_node_freelist(mdoc->first);
                    129:        if (mdoc->meta.title)
                    130:                free(mdoc->meta.title);
                    131:        if (mdoc->meta.os)
                    132:                free(mdoc->meta.os);
                    133:        if (mdoc->meta.name)
                    134:                free(mdoc->meta.name);
                    135:        if (mdoc->meta.arch)
                    136:                free(mdoc->meta.arch);
                    137:        if (mdoc->meta.vol)
                    138:                free(mdoc->meta.vol);
1.73      kristaps  139: }
                    140:
                    141:
                    142: static int
                    143: mdoc_alloc1(struct mdoc *mdoc)
                    144: {
1.67      kristaps  145:
                    146:        bzero(&mdoc->meta, sizeof(struct mdoc_meta));
                    147:        mdoc->flags = 0;
                    148:        mdoc->lastnamed = mdoc->lastsec = 0;
1.70      kristaps  149:        mdoc->last = calloc(1, sizeof(struct mdoc_node));
                    150:        if (NULL == mdoc->last)
1.73      kristaps  151:                return(0);
                    152:
1.70      kristaps  153:        mdoc->first = mdoc->last;
1.67      kristaps  154:        mdoc->last->type = MDOC_ROOT;
                    155:        mdoc->next = MDOC_NEXT_CHILD;
1.73      kristaps  156:        return(1);
                    157: }
                    158:
                    159:
                    160: /*
                    161:  * Free up all resources contributed by a parse:  the node tree,
                    162:  * meta-data and so on.  Then reallocate the root node for another
                    163:  * parse.
                    164:  */
                    165: int
                    166: mdoc_reset(struct mdoc *mdoc)
                    167: {
                    168:
                    169:        mdoc_free1(mdoc);
                    170:        return(mdoc_alloc1(mdoc));
1.67      kristaps  171: }
                    172:
                    173:
1.68      kristaps  174: /*
                    175:  * Completely free up all resources.
                    176:  */
1.67      kristaps  177: void
1.38      kristaps  178: mdoc_free(struct mdoc *mdoc)
1.34      kristaps  179: {
                    180:
1.73      kristaps  181:        mdoc_free1(mdoc);
1.68      kristaps  182:        if (mdoc->htab)
1.74    ! kristaps  183:                mdoc_hash_free(mdoc->htab);
1.1       kristaps  184:        free(mdoc);
                    185: }
                    186:
                    187:
                    188: struct mdoc *
1.55      kristaps  189: mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb)
1.1       kristaps  190: {
                    191:        struct mdoc     *p;
                    192:
1.70      kristaps  193:        if (NULL == (p = calloc(1, sizeof(struct mdoc))))
1.73      kristaps  194:                return(NULL);
1.74    ! kristaps  195:        if (cb)
        !           196:                (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
1.1       kristaps  197:
                    198:        p->data = data;
1.73      kristaps  199:        p->pflags = pflags;
                    200:
1.74    ! kristaps  201:        if (NULL == (p->htab = mdoc_hash_alloc())) {
        !           202:                free(p);
        !           203:                return(NULL);
        !           204:        } else if (mdoc_alloc1(p))
        !           205:                return(p);
1.1       kristaps  206:
1.73      kristaps  207:        free(p);
                    208:        return(NULL);
1.1       kristaps  209: }
                    210:
                    211:
1.68      kristaps  212: /*
                    213:  * Climb back up the parse tree, validating open scopes.  Mostly calls
                    214:  * through to macro_end in macro.c.
                    215:  */
1.1       kristaps  216: int
1.72      kristaps  217: mdoc_endparse(struct mdoc *m)
1.20      kristaps  218: {
                    219:
1.72      kristaps  220:        if (MDOC_HALT & m->flags)
1.20      kristaps  221:                return(0);
1.72      kristaps  222:        else if (mdoc_macroend(m))
1.20      kristaps  223:                return(1);
1.72      kristaps  224:        m->flags |= MDOC_HALT;
                    225:        return(0);
1.20      kristaps  226: }
                    227:
                    228:
1.50      kristaps  229: /*
1.53      kristaps  230:  * Main parse routine.  Parses a single line -- really just hands off to
                    231:  * the macro or text parser.
1.50      kristaps  232:  */
1.20      kristaps  233: int
1.53      kristaps  234: mdoc_parseln(struct mdoc *m, int ln, char *buf)
1.1       kristaps  235: {
                    236:
1.53      kristaps  237:        /* If in error-mode, then we parse no more. */
1.50      kristaps  238:
1.53      kristaps  239:        if (MDOC_HALT & m->flags)
1.20      kristaps  240:                return(0);
1.50      kristaps  241:
1.53      kristaps  242:        return('.' == *buf ? parsemacro(m, ln, buf) :
                    243:                        parsetext(m, ln, buf));
1.1       kristaps  244: }
                    245:
                    246:
                    247: void
1.31      kristaps  248: mdoc_vmsg(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
1.1       kristaps  249: {
1.31      kristaps  250:        char              buf[256];
1.23      kristaps  251:        va_list           ap;
1.1       kristaps  252:
                    253:        if (NULL == mdoc->cb.mdoc_msg)
                    254:                return;
                    255:
                    256:        va_start(ap, fmt);
1.31      kristaps  257:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1.1       kristaps  258:        va_end(ap);
1.31      kristaps  259:        (*mdoc->cb.mdoc_msg)(mdoc->data, ln, pos, buf);
1.1       kristaps  260: }
                    261:
                    262:
                    263: int
1.31      kristaps  264: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
                    265:                const char *fmt, ...)
1.1       kristaps  266: {
1.31      kristaps  267:        char             buf[256];
                    268:        va_list          ap;
1.1       kristaps  269:
                    270:        if (NULL == mdoc->cb.mdoc_err)
                    271:                return(0);
1.31      kristaps  272:
                    273:        va_start(ap, fmt);
                    274:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    275:        va_end(ap);
                    276:        return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1       kristaps  277: }
                    278:
                    279:
                    280: int
1.31      kristaps  281: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos,
                    282:                enum mdoc_warn type, const char *fmt, ...)
1.1       kristaps  283: {
1.31      kristaps  284:        char             buf[256];
                    285:        va_list          ap;
1.1       kristaps  286:
                    287:        if (NULL == mdoc->cb.mdoc_warn)
                    288:                return(0);
1.31      kristaps  289:
                    290:        va_start(ap, fmt);
                    291:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    292:        va_end(ap);
                    293:        return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, type, buf));
1.1       kristaps  294: }
                    295:
                    296:
                    297: int
1.53      kristaps  298: mdoc_macro(struct mdoc *m, int tok,
                    299:                int ln, int pp, int *pos, char *buf)
1.1       kristaps  300: {
                    301:
1.53      kristaps  302:        /* FIXME - these should happen during validation. */
1.31      kristaps  303:
1.44      kristaps  304:        if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
1.53      kristaps  305:                        SEC_PROLOGUE != m->lastnamed)
1.73      kristaps  306:                return(perr(m, ln, pp, EPROLBODY));
1.53      kristaps  307:
1.44      kristaps  308:        if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
1.53      kristaps  309:                        SEC_PROLOGUE == m->lastnamed)
1.73      kristaps  310:                return(perr(m, ln, pp, EBODYPROL));
1.53      kristaps  311:
                    312:        if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
1.73      kristaps  313:                return(perr(m, ln, pp, ENOCALL));
1.53      kristaps  314:
                    315:        return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
1.1       kristaps  316: }
                    317:
                    318:
1.23      kristaps  319: static int
1.73      kristaps  320: perr(struct mdoc *m, int line, int pos, enum merr type)
                    321: {
                    322:        char            *p;
                    323:
                    324:        p = NULL;
                    325:        switch (type) {
                    326:        case (ENOCALL):
                    327:                p = "not callable";
                    328:                break;
                    329:        case (EPROLBODY):
                    330:                p = "macro disallowed in document body";
                    331:                break;
                    332:        case (EBODYPROL):
                    333:                p = "macro disallowed in document prologue";
                    334:                break;
                    335:        case (EMALLOC):
                    336:                p = "memory exhausted";
                    337:                break;
                    338:        case (ETEXTPROL):
                    339:                p = "text disallowed in document prologue";
                    340:                break;
                    341:        case (ENOBLANK):
                    342:                p = "blank lines disallowed in non-literal contexts";
                    343:                break;
                    344:        case (ESPACE):
                    345:                p = "whitespace disallowed after delimiter";
                    346:                break;
                    347:        }
                    348:        assert(p);
                    349:        return(mdoc_perr(m, line, pos, p));
                    350: }
                    351:
                    352:
                    353: static int
                    354: node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1       kristaps  355: {
                    356:
1.25      kristaps  357:        assert(mdoc->last);
                    358:        assert(mdoc->first);
                    359:        assert(MDOC_ROOT != p->type);
1.1       kristaps  360:
1.13      kristaps  361:        switch (mdoc->next) {
                    362:        case (MDOC_NEXT_SIBLING):
1.6       kristaps  363:                mdoc->last->next = p;
                    364:                p->prev = mdoc->last;
1.13      kristaps  365:                p->parent = mdoc->last->parent;
1.1       kristaps  366:                break;
1.13      kristaps  367:        case (MDOC_NEXT_CHILD):
                    368:                mdoc->last->child = p;
1.1       kristaps  369:                p->parent = mdoc->last;
                    370:                break;
                    371:        default:
1.13      kristaps  372:                abort();
                    373:                /* NOTREACHED */
1.1       kristaps  374:        }
                    375:
1.23      kristaps  376:        if ( ! mdoc_valid_pre(mdoc, p))
                    377:                return(0);
1.68      kristaps  378:        if ( ! mdoc_action_pre(mdoc, p))
                    379:                return(0);
1.27      kristaps  380:
                    381:        switch (p->type) {
                    382:        case (MDOC_HEAD):
                    383:                assert(MDOC_BLOCK == p->parent->type);
1.53      kristaps  384:                p->parent->head = p;
1.27      kristaps  385:                break;
                    386:        case (MDOC_TAIL):
                    387:                assert(MDOC_BLOCK == p->parent->type);
1.53      kristaps  388:                p->parent->tail = p;
1.27      kristaps  389:                break;
                    390:        case (MDOC_BODY):
                    391:                assert(MDOC_BLOCK == p->parent->type);
1.53      kristaps  392:                p->parent->body = p;
1.27      kristaps  393:                break;
                    394:        default:
                    395:                break;
                    396:        }
                    397:
1.1       kristaps  398:        mdoc->last = p;
1.71      kristaps  399:
                    400:        switch (p->type) {
                    401:        case (MDOC_TEXT):
                    402:                if ( ! mdoc_valid_post(mdoc))
                    403:                        return(0);
                    404:                if ( ! mdoc_action_post(mdoc))
                    405:                        return(0);
                    406:                break;
                    407:        default:
                    408:                break;
                    409:        }
                    410:
1.23      kristaps  411:        return(1);
1.1       kristaps  412: }
                    413:
                    414:
1.45      kristaps  415: static struct mdoc_node *
1.73      kristaps  416: node_alloc(struct mdoc *mdoc, int line,
                    417:                int pos, int tok, enum mdoc_type type)
1.45      kristaps  418: {
1.46      kristaps  419:        struct mdoc_node *p;
                    420:
1.73      kristaps  421:        if (NULL == (p = calloc(1, sizeof(struct mdoc_node)))) {
                    422:                (void)verr(mdoc, EMALLOC);
                    423:                return(NULL);
                    424:        }
                    425:
1.46      kristaps  426:        p->sec = mdoc->lastsec;
1.73      kristaps  427:        p->line = line;
                    428:        p->pos = pos;
                    429:        p->tok = tok;
                    430:        if (MDOC_TEXT != (p->type = type))
                    431:                assert(p->tok >= 0);
1.45      kristaps  432:
1.46      kristaps  433:        return(p);
1.45      kristaps  434: }
                    435:
                    436:
1.23      kristaps  437: int
1.22      kristaps  438: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.17      kristaps  439: {
                    440:        struct mdoc_node *p;
                    441:
1.73      kristaps  442:        p = node_alloc(mdoc, line, pos, tok, MDOC_TAIL);
                    443:        if (NULL == p)
                    444:                return(0);
                    445:        return(node_append(mdoc, p));
1.17      kristaps  446: }
                    447:
                    448:
1.23      kristaps  449: int
1.22      kristaps  450: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1       kristaps  451: {
                    452:        struct mdoc_node *p;
                    453:
                    454:        assert(mdoc->first);
                    455:        assert(mdoc->last);
                    456:
1.73      kristaps  457:        p = node_alloc(mdoc, line, pos, tok, MDOC_HEAD);
                    458:        if (NULL == p)
                    459:                return(0);
                    460:        return(node_append(mdoc, p));
1.1       kristaps  461: }
                    462:
                    463:
1.23      kristaps  464: int
1.22      kristaps  465: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1       kristaps  466: {
                    467:        struct mdoc_node *p;
                    468:
1.73      kristaps  469:        p = node_alloc(mdoc, line, pos, tok, MDOC_BODY);
                    470:        if (NULL == p)
                    471:                return(0);
                    472:        return(node_append(mdoc, p));
1.1       kristaps  473: }
                    474:
                    475:
1.23      kristaps  476: int
1.22      kristaps  477: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
1.53      kristaps  478:                int tok, struct mdoc_arg *args)
1.1       kristaps  479: {
                    480:        struct mdoc_node *p;
                    481:
1.73      kristaps  482:        p = node_alloc(mdoc, line, pos, tok, MDOC_BLOCK);
                    483:        if (NULL == p)
                    484:                return(0);
                    485:        if ((p->args = args))
1.53      kristaps  486:                (args->refcnt)++;
1.73      kristaps  487:        return(node_append(mdoc, p));
1.1       kristaps  488: }
                    489:
                    490:
1.23      kristaps  491: int
1.22      kristaps  492: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
1.53      kristaps  493:                int tok, struct mdoc_arg *args)
1.1       kristaps  494: {
                    495:        struct mdoc_node *p;
                    496:
1.73      kristaps  497:        p = node_alloc(mdoc, line, pos, tok, MDOC_ELEM);
                    498:        if (NULL == p)
                    499:                return(0);
                    500:        if ((p->args = args))
1.53      kristaps  501:                (args->refcnt)++;
1.73      kristaps  502:        return(node_append(mdoc, p));
1.1       kristaps  503: }
                    504:
                    505:
1.23      kristaps  506: int
1.22      kristaps  507: mdoc_word_alloc(struct mdoc *mdoc,
                    508:                int line, int pos, const char *word)
1.1       kristaps  509: {
                    510:        struct mdoc_node *p;
                    511:
1.73      kristaps  512:        p = node_alloc(mdoc, line, pos, -1, MDOC_TEXT);
                    513:        if (NULL == p)
                    514:                return(0);
                    515:        if (NULL == (p->string = strdup(word))) {
                    516:                (void)verr(mdoc, EMALLOC);
                    517:                return(0);
                    518:        }
                    519:        return(node_append(mdoc, p));
1.1       kristaps  520: }
                    521:
                    522:
1.53      kristaps  523: void
                    524: mdoc_node_free(struct mdoc_node *p)
1.1       kristaps  525: {
                    526:
1.53      kristaps  527:        if (p->string)
                    528:                free(p->string);
                    529:        if (p->args)
                    530:                mdoc_argv_free(p->args);
1.1       kristaps  531:        free(p);
                    532: }
                    533:
                    534:
1.53      kristaps  535: void
                    536: mdoc_node_freelist(struct mdoc_node *p)
1.1       kristaps  537: {
                    538:
1.53      kristaps  539:        if (p->child)
                    540:                mdoc_node_freelist(p->child);
                    541:        if (p->next)
                    542:                mdoc_node_freelist(p->next);
1.1       kristaps  543:
1.53      kristaps  544:        mdoc_node_free(p);
1.1       kristaps  545: }
                    546:
                    547:
1.53      kristaps  548: /*
                    549:  * Parse free-form text, that is, a line that does not begin with the
                    550:  * control character.
                    551:  */
                    552: static int
1.68      kristaps  553: parsetext(struct mdoc *m, int line, char *buf)
1.1       kristaps  554: {
                    555:
1.68      kristaps  556:        if (SEC_PROLOGUE == m->lastnamed)
1.73      kristaps  557:                return(perr(m, line, 0, ETEXTPROL));
1.1       kristaps  558:
1.68      kristaps  559:        if (0 == buf[0] && ! (MDOC_LITERAL & m->flags))
1.73      kristaps  560:                return(perr(m, line, 0, ENOBLANK));
1.68      kristaps  561:
                    562:        if ( ! mdoc_word_alloc(m, line, 0, buf))
1.53      kristaps  563:                return(0);
1.1       kristaps  564:
1.68      kristaps  565:        m->next = MDOC_NEXT_SIBLING;
1.53      kristaps  566:        return(1);
1.1       kristaps  567: }
                    568:
                    569:
1.58      kristaps  570: static int
                    571: macrowarn(struct mdoc *m, int ln, const char *buf)
                    572: {
                    573:        if ( ! (MDOC_IGN_MACRO & m->pflags))
1.73      kristaps  574:                return(mdoc_perr(m, ln, 1,
                    575:                                "unknown macro: %s%s",
1.59      kristaps  576:                                buf, strlen(buf) > 3 ? "..." : ""));
1.58      kristaps  577:        return(mdoc_pwarn(m, ln, 1, WARN_SYNTAX,
                    578:                                "unknown macro: %s%s",
1.59      kristaps  579:                                buf, strlen(buf) > 3 ? "..." : ""));
1.58      kristaps  580: }
                    581:
                    582:
                    583:
1.53      kristaps  584: /*
                    585:  * Parse a macro line, that is, a line beginning with the control
                    586:  * character.
                    587:  */
                    588: int
                    589: parsemacro(struct mdoc *m, int ln, char *buf)
1.1       kristaps  590: {
1.53      kristaps  591:        int               i, c;
                    592:        char              mac[5];
1.1       kristaps  593:
1.63      kristaps  594:        /* Comments and empties are quickly ignored. */
                    595:
                    596:        if (0 == buf[1])
                    597:                return(1);
                    598:
1.65      kristaps  599:        if (' ' == buf[1]) {
1.63      kristaps  600:                i = 2;
1.65      kristaps  601:                while (buf[i] && ' ' == buf[i])
1.63      kristaps  602:                        i++;
                    603:                if (0 == buf[i])
                    604:                        return(1);
1.73      kristaps  605:                return(perr(m, ln, 1, ESPACE));
1.63      kristaps  606:        }
1.1       kristaps  607:
1.53      kristaps  608:        if (buf[1] && '\\' == buf[1])
                    609:                if (buf[2] && '\"' == buf[2])
                    610:                        return(1);
1.1       kristaps  611:
1.53      kristaps  612:        /* Copy the first word into a nil-terminated buffer. */
1.1       kristaps  613:
1.53      kristaps  614:        for (i = 1; i < 5; i++) {
                    615:                if (0 == (mac[i - 1] = buf[i]))
                    616:                        break;
1.65      kristaps  617:                else if (' ' == buf[i])
1.53      kristaps  618:                        break;
                    619:        }
1.1       kristaps  620:
1.53      kristaps  621:        mac[i - 1] = 0;
1.1       kristaps  622:
1.53      kristaps  623:        if (i == 5 || i <= 2) {
1.58      kristaps  624:                if ( ! macrowarn(m, ln, mac))
                    625:                        goto err;
                    626:                return(1);
1.53      kristaps  627:        }
                    628:
1.74    ! kristaps  629:        if (MDOC_MAX == (c = mdoc_hash_find(m->htab, mac))) {
1.58      kristaps  630:                if ( ! macrowarn(m, ln, mac))
                    631:                        goto err;
                    632:                return(1);
1.53      kristaps  633:        }
1.1       kristaps  634:
1.53      kristaps  635:        /* The macro is sane.  Jump to the next word. */
1.1       kristaps  636:
1.65      kristaps  637:        while (buf[i] && ' ' == buf[i])
1.53      kristaps  638:                i++;
1.1       kristaps  639:
1.53      kristaps  640:        /* Begin recursive parse sequence. */
1.1       kristaps  641:
1.53      kristaps  642:        if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
                    643:                goto err;
1.1       kristaps  644:
1.53      kristaps  645:        return(1);
1.1       kristaps  646:
1.53      kristaps  647: err:   /* Error out. */
1.1       kristaps  648:
1.53      kristaps  649:        m->flags |= MDOC_HALT;
                    650:        return(0);
1.1       kristaps  651: }

CVSweb