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Annotation of mandoc/mdoc.c, Revision 1.51

1.51    ! kristaps    1: /* $Id: mdoc.c,v 1.50 2009/03/02 17:14:46 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_arg  *argdup(size_t, const struct mdoc_arg *);
                     36: static void              argfree(size_t, struct mdoc_arg *);
                     37: static void              argcpy(struct mdoc_arg *,
                     38:                                const struct mdoc_arg *);
                     39:
                     40: static struct mdoc_node *mdoc_node_alloc(const struct mdoc *);
                     41: static int               mdoc_node_append(struct mdoc *,
                     42:                                struct mdoc_node *);
                     43: static void              mdoc_elem_free(struct mdoc_elem *);
                     44: static void              mdoc_text_free(struct mdoc_text *);
                     45:
                     46:
1.1       kristaps   47: const  char *const __mdoc_macronames[MDOC_MAX] = {
                     48:        "\\\"",         "Dd",           "Dt",           "Os",
                     49:        "Sh",           "Ss",           "Pp",           "D1",
                     50:        "Dl",           "Bd",           "Ed",           "Bl",
                     51:        "El",           "It",           "Ad",           "An",
                     52:        "Ar",           "Cd",           "Cm",           "Dv",
                     53:        "Er",           "Ev",           "Ex",           "Fa",
                     54:        "Fd",           "Fl",           "Fn",           "Ft",
                     55:        "Ic",           "In",           "Li",           "Nd",
                     56:        "Nm",           "Op",           "Ot",           "Pa",
                     57:        "Rv",           "St",           "Va",           "Vt",
                     58:        /* LINTED */
                     59:        "Xr",           "\%A",          "\%B",          "\%D",
                     60:        /* LINTED */
                     61:        "\%I",          "\%J",          "\%N",          "\%O",
                     62:        /* LINTED */
                     63:        "\%P",          "\%R",          "\%T",          "\%V",
                     64:        "Ac",           "Ao",           "Aq",           "At",
                     65:        "Bc",           "Bf",           "Bo",           "Bq",
                     66:        "Bsx",          "Bx",           "Db",           "Dc",
                     67:        "Do",           "Dq",           "Ec",           "Ef",
                     68:        "Em",           "Eo",           "Fx",           "Ms",
                     69:        "No",           "Ns",           "Nx",           "Ox",
                     70:        "Pc",           "Pf",           "Po",           "Pq",
                     71:        "Qc",           "Ql",           "Qo",           "Qq",
                     72:        "Re",           "Rs",           "Sc",           "So",
                     73:        "Sq",           "Sm",           "Sx",           "Sy",
                     74:        "Tn",           "Ux",           "Xc",           "Xo",
                     75:        "Fo",           "Fc",           "Oo",           "Oc",
                     76:        "Bk",           "Ek",           "Bt",           "Hf",
                     77:        "Fr",           "Ud",
                     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",
                     88:        "p1003.1-88",           "p1003.1-90",           "p1003.1-96",
                     89:        "p1003.1-2001",         "p1003.1-2004",         "p1003.1",
                     90:        "p1003.1b",             "p1003.1b-93",          "p1003.1c-95",
                     91:        "p1003.1g-2000",        "p1003.2-92",           "p1387.2-95",
                     92:        "p1003.2",              "p1387.2",              "isoC-90",
                     93:        "isoC-amd1",            "isoC-tcor1",           "isoC-tcor2",
                     94:        "isoC-99",              "ansiC",                "ansiC-89",
                     95:        "ansiC-99",             "ieee754",              "iso8802-3",
                     96:        "xpg3",                 "xpg4",                 "xpg4.2",
                     97:        "xpg4.3",               "xbd5",                 "xcu5",
                     98:        "xsh5",                 "xns5",                 "xns5.2d2.0",
                     99:        "xcurses4.2",           "susv2",                "susv3",
                    100:        "svid4",                "filled",               "words",
1.14      kristaps  101:        "emphasis",             "symbolic",
1.1       kristaps  102:        };
                    103:
                    104: const  char * const *mdoc_macronames = __mdoc_macronames;
                    105: const  char * const *mdoc_argnames = __mdoc_argnames;
                    106:
1.45      kristaps  107:
1.1       kristaps  108: const struct mdoc_node *
1.47      kristaps  109: mdoc_node(const struct mdoc *mdoc)
1.1       kristaps  110: {
                    111:
                    112:        return(mdoc->first);
                    113: }
                    114:
                    115:
1.37      kristaps  116: const struct mdoc_meta *
1.47      kristaps  117: mdoc_meta(const struct mdoc *mdoc)
1.37      kristaps  118: {
                    119:
                    120:        return(&mdoc->meta);
                    121: }
                    122:
                    123:
1.1       kristaps  124: void
1.38      kristaps  125: mdoc_free(struct mdoc *mdoc)
1.34      kristaps  126: {
                    127:
1.38      kristaps  128:        if (mdoc->first)
                    129:                mdoc_node_freelist(mdoc->first);
                    130:        if (mdoc->htab)
                    131:                mdoc_tokhash_free(mdoc->htab);
1.34      kristaps  132:        if (mdoc->meta.title)
                    133:                free(mdoc->meta.title);
                    134:        if (mdoc->meta.os)
                    135:                free(mdoc->meta.os);
                    136:        if (mdoc->meta.name)
                    137:                free(mdoc->meta.name);
                    138:
1.1       kristaps  139:        free(mdoc);
                    140: }
                    141:
                    142:
                    143: struct mdoc *
                    144: mdoc_alloc(void *data, const struct mdoc_cb *cb)
                    145: {
                    146:        struct mdoc     *p;
                    147:
                    148:        p = xcalloc(1, sizeof(struct mdoc));
                    149:
                    150:        p->data = data;
1.33      kristaps  151:        if (cb)
                    152:                (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
1.1       kristaps  153:
1.25      kristaps  154:        p->last = xcalloc(1, sizeof(struct mdoc_node));
                    155:        p->last->type = MDOC_ROOT;
                    156:        p->first = p->last;
                    157:
                    158:        p->next = MDOC_NEXT_CHILD;
1.4       kristaps  159:        p->htab = mdoc_tokhash_alloc();
1.25      kristaps  160:
1.1       kristaps  161:        return(p);
                    162: }
                    163:
                    164:
                    165: int
1.20      kristaps  166: mdoc_endparse(struct mdoc *mdoc)
                    167: {
                    168:
                    169:        if (MDOC_HALT & mdoc->flags)
                    170:                return(0);
                    171:        if (NULL == mdoc->first)
                    172:                return(1);
                    173:
                    174:        assert(mdoc->last);
                    175:        if ( ! macro_end(mdoc)) {
                    176:                mdoc->flags |= MDOC_HALT;
                    177:                return(0);
                    178:        }
                    179:        return(1);
                    180: }
                    181:
                    182:
1.50      kristaps  183: /*
                    184:  * Main line-parsing routine.  If the line is a macro-line (started with
                    185:  * a '.' control character), then pass along to the parser, which parses
                    186:  * subsequent macros until the end of line.  If normal text, simply
                    187:  * append the entire line to the chain.
                    188:  */
1.20      kristaps  189: int
                    190: mdoc_parseln(struct mdoc *mdoc, int line, char *buf)
1.1       kristaps  191: {
                    192:        int               c, i;
                    193:        char              tmp[5];
                    194:
1.20      kristaps  195:        if (MDOC_HALT & mdoc->flags)
                    196:                return(0);
                    197:
1.39      kristaps  198:        mdoc->linetok = 0;
                    199:
1.5       kristaps  200:        if ('.' != *buf) {
1.50      kristaps  201:                /*
                    202:                 * Free-form text.  Not allowed in the prologue.
                    203:                 */
1.44      kristaps  204:                if (SEC_PROLOGUE == mdoc->lastnamed)
1.49      kristaps  205:                        return(mdoc_perr(mdoc, line, 0,
1.50      kristaps  206:                                        "no text in prologue"));
                    207:
1.39      kristaps  208:                if ( ! mdoc_word_alloc(mdoc, line, 0, buf))
                    209:                        return(0);
                    210:                mdoc->next = MDOC_NEXT_SIBLING;
                    211:                return(1);
1.1       kristaps  212:        }
                    213:
1.50      kristaps  214:        /*
                    215:         * Control-character detected.  Begin the parsing sequence.
                    216:         */
                    217:
1.1       kristaps  218:        if (buf[1] && '\\' == buf[1])
                    219:                if (buf[2] && '\"' == buf[2])
                    220:                        return(1);
                    221:
                    222:        i = 1;
1.51    ! kristaps  223:        while (buf[i] && ! isspace((u_char)buf[i]) &&
        !           224:                        i < (int)sizeof(tmp))
1.1       kristaps  225:                i++;
                    226:
1.20      kristaps  227:        if (i == (int)sizeof(tmp)) {
                    228:                mdoc->flags |= MDOC_HALT;
1.31      kristaps  229:                return(mdoc_perr(mdoc, line, 1, "unknown macro"));
1.20      kristaps  230:        } else if (i <= 2) {
                    231:                mdoc->flags |= MDOC_HALT;
1.31      kristaps  232:                return(mdoc_perr(mdoc, line, 1, "unknown macro"));
1.20      kristaps  233:        }
1.1       kristaps  234:
                    235:        i--;
                    236:
1.2       kristaps  237:        (void)memcpy(tmp, buf + 1, (size_t)i);
1.1       kristaps  238:        tmp[i++] = 0;
                    239:
1.20      kristaps  240:        if (MDOC_MAX == (c = mdoc_find(mdoc, tmp))) {
                    241:                mdoc->flags |= MDOC_HALT;
1.31      kristaps  242:                return(mdoc_perr(mdoc, line, 1, "unknown macro"));
1.20      kristaps  243:        }
1.1       kristaps  244:
1.51    ! kristaps  245:        while (buf[i] && isspace((u_char)buf[i]))
1.1       kristaps  246:                i++;
                    247:
1.21      kristaps  248:        if ( ! mdoc_macro(mdoc, c, line, 1, &i, buf)) {
1.20      kristaps  249:                mdoc->flags |= MDOC_HALT;
                    250:                return(0);
                    251:        }
1.50      kristaps  252:
1.20      kristaps  253:        return(1);
1.1       kristaps  254: }
                    255:
                    256:
                    257: void
1.31      kristaps  258: mdoc_vmsg(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
1.1       kristaps  259: {
1.31      kristaps  260:        char              buf[256];
1.23      kristaps  261:        va_list           ap;
1.1       kristaps  262:
                    263:        if (NULL == mdoc->cb.mdoc_msg)
                    264:                return;
                    265:
                    266:        va_start(ap, fmt);
1.31      kristaps  267:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1.1       kristaps  268:        va_end(ap);
1.31      kristaps  269:        (*mdoc->cb.mdoc_msg)(mdoc->data, ln, pos, buf);
1.1       kristaps  270: }
                    271:
                    272:
                    273: int
1.31      kristaps  274: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
                    275:                const char *fmt, ...)
1.1       kristaps  276: {
1.31      kristaps  277:        char             buf[256];
                    278:        va_list          ap;
1.1       kristaps  279:
                    280:        if (NULL == mdoc->cb.mdoc_err)
                    281:                return(0);
1.31      kristaps  282:
                    283:        va_start(ap, fmt);
                    284:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    285:        va_end(ap);
                    286:        return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1       kristaps  287: }
                    288:
                    289:
                    290: int
1.31      kristaps  291: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos,
                    292:                enum mdoc_warn type, const char *fmt, ...)
1.1       kristaps  293: {
1.31      kristaps  294:        char             buf[256];
                    295:        va_list          ap;
1.1       kristaps  296:
                    297:        if (NULL == mdoc->cb.mdoc_warn)
                    298:                return(0);
1.31      kristaps  299:
                    300:        va_start(ap, fmt);
                    301:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    302:        va_end(ap);
                    303:        return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, type, buf));
1.1       kristaps  304: }
                    305:
                    306:
                    307: int
1.21      kristaps  308: mdoc_macro(struct mdoc *mdoc, int tok,
1.23      kristaps  309:                int ln, int ppos, int *pos, char *buf)
1.1       kristaps  310: {
                    311:
1.31      kristaps  312:        assert(mdoc_macros[tok].fp);
                    313:
1.44      kristaps  314:        if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
                    315:                        SEC_PROLOGUE != mdoc->lastnamed)
                    316:                return(mdoc_perr(mdoc, ln, ppos, "macro disallowed in document body"));
                    317:        if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
                    318:                        SEC_PROLOGUE == mdoc->lastnamed)
                    319:                return(mdoc_perr(mdoc, ln, ppos, "macro disallowed in document prologue"));
1.23      kristaps  320:        if (1 != ppos && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
1.31      kristaps  321:                return(mdoc_perr(mdoc, ln, ppos, "macro not callable"));
1.23      kristaps  322:        return((*mdoc_macros[tok].fp)(mdoc, tok, ln, ppos, pos, buf));
1.1       kristaps  323: }
                    324:
                    325:
1.23      kristaps  326: static int
                    327: mdoc_node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1       kristaps  328: {
1.30      kristaps  329:        const char       *nn, *nt, *on, *ot, *act;
1.1       kristaps  330:
1.25      kristaps  331:        assert(mdoc->last);
                    332:        assert(mdoc->first);
                    333:        assert(MDOC_ROOT != p->type);
1.1       kristaps  334:
1.39      kristaps  335:        /* See if we exceed the suggest line-max. */
                    336:
                    337:        switch (p->type) {
                    338:        case (MDOC_TEXT):
                    339:                /* FALLTHROUGH */
                    340:        case (MDOC_ELEM):
                    341:                /* FALLTHROUGH */
                    342:        case (MDOC_BLOCK):
                    343:                mdoc->linetok++;
                    344:                break;
                    345:        default:
                    346:                break;
                    347:        }
                    348:
1.40      kristaps  349:        /* This sort-of works (re-opening of text macros...). */
1.39      kristaps  350:        if (mdoc->linetok > MDOC_LINEARG_SOFTMAX)
                    351:                if ( ! mdoc_nwarn(mdoc, p, WARN_COMPAT,
                    352:                                        "suggested %d tokens per line exceeded (has %d)",
                    353:                                        MDOC_LINEARG_SOFTMAX, mdoc->linetok))
                    354:                        return(0);
                    355:
1.27      kristaps  356:        if (MDOC_TEXT == mdoc->last->type)
                    357:                on = "<text>";
                    358:        else if (MDOC_ROOT == mdoc->last->type)
                    359:                on = "<root>";
                    360:        else
                    361:                on = mdoc_macronames[mdoc->last->tok];
                    362:
1.30      kristaps  363:        if (MDOC_TEXT == p->type)
                    364:                nn = "<text>";
                    365:        else if (MDOC_ROOT == p->type)
                    366:                nn = "<root>";
                    367:        else
                    368:                nn = mdoc_macronames[p->tok];
                    369:
                    370:        ot = mdoc_type2a(mdoc->last->type);
                    371:        nt = mdoc_type2a(p->type);
1.1       kristaps  372:
1.13      kristaps  373:        switch (mdoc->next) {
                    374:        case (MDOC_NEXT_SIBLING):
1.6       kristaps  375:                mdoc->last->next = p;
                    376:                p->prev = mdoc->last;
1.13      kristaps  377:                p->parent = mdoc->last->parent;
1.6       kristaps  378:                act = "sibling";
1.1       kristaps  379:                break;
1.13      kristaps  380:        case (MDOC_NEXT_CHILD):
                    381:                mdoc->last->child = p;
1.1       kristaps  382:                p->parent = mdoc->last;
                    383:                act = "child";
                    384:                break;
                    385:        default:
1.13      kristaps  386:                abort();
                    387:                /* NOTREACHED */
1.1       kristaps  388:        }
                    389:
1.23      kristaps  390:        if ( ! mdoc_valid_pre(mdoc, p))
                    391:                return(0);
1.27      kristaps  392:
                    393:        switch (p->type) {
                    394:        case (MDOC_HEAD):
                    395:                assert(MDOC_BLOCK == p->parent->type);
                    396:                p->parent->data.block.head = p;
                    397:                break;
                    398:        case (MDOC_TAIL):
                    399:                assert(MDOC_BLOCK == p->parent->type);
                    400:                p->parent->data.block.tail = p;
                    401:                break;
                    402:        case (MDOC_BODY):
                    403:                assert(MDOC_BLOCK == p->parent->type);
                    404:                p->parent->data.block.body = p;
                    405:                break;
                    406:        default:
                    407:                break;
                    408:        }
                    409:
1.1       kristaps  410:        mdoc->last = p;
1.30      kristaps  411:        mdoc_msg(mdoc, "parse: %s `%s' %s of %s `%s'",
                    412:                        nt, nn, act, ot, on);
1.23      kristaps  413:        return(1);
1.1       kristaps  414: }
                    415:
                    416:
1.45      kristaps  417: static struct mdoc_node *
1.46      kristaps  418: mdoc_node_alloc(const struct mdoc *mdoc)
1.45      kristaps  419: {
1.46      kristaps  420:        struct mdoc_node *p;
                    421:
                    422:        p = xcalloc(1, sizeof(struct mdoc_node));
                    423:        p->sec = mdoc->lastsec;
1.45      kristaps  424:
1.46      kristaps  425:        return(p);
1.45      kristaps  426: }
                    427:
                    428:
1.23      kristaps  429: int
1.22      kristaps  430: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.17      kristaps  431: {
                    432:        struct mdoc_node *p;
                    433:
                    434:        assert(mdoc->first);
                    435:        assert(mdoc->last);
                    436:
1.46      kristaps  437:        p = mdoc_node_alloc(mdoc);
1.17      kristaps  438:
1.22      kristaps  439:        p->line = line;
                    440:        p->pos = pos;
1.17      kristaps  441:        p->type = MDOC_TAIL;
1.27      kristaps  442:        p->tok = tok;
1.17      kristaps  443:
1.23      kristaps  444:        return(mdoc_node_append(mdoc, p));
1.17      kristaps  445: }
                    446:
                    447:
1.23      kristaps  448: int
1.22      kristaps  449: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1       kristaps  450: {
                    451:        struct mdoc_node *p;
                    452:
                    453:        assert(mdoc->first);
                    454:        assert(mdoc->last);
                    455:
1.46      kristaps  456:        p = mdoc_node_alloc(mdoc);
1.13      kristaps  457:
1.22      kristaps  458:        p->line = line;
                    459:        p->pos = pos;
1.1       kristaps  460:        p->type = MDOC_HEAD;
1.27      kristaps  461:        p->tok = tok;
1.1       kristaps  462:
1.23      kristaps  463:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  464: }
                    465:
                    466:
1.23      kristaps  467: int
1.22      kristaps  468: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1       kristaps  469: {
                    470:        struct mdoc_node *p;
                    471:
                    472:        assert(mdoc->first);
                    473:        assert(mdoc->last);
                    474:
1.46      kristaps  475:        p = mdoc_node_alloc(mdoc);
1.1       kristaps  476:
1.22      kristaps  477:        p->line = line;
                    478:        p->pos = pos;
1.1       kristaps  479:        p->type = MDOC_BODY;
1.27      kristaps  480:        p->tok = tok;
1.1       kristaps  481:
1.23      kristaps  482:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  483: }
                    484:
                    485:
1.23      kristaps  486: int
1.25      kristaps  487: mdoc_root_alloc(struct mdoc *mdoc)
                    488: {
                    489:        struct mdoc_node *p;
                    490:
1.46      kristaps  491:        p = mdoc_node_alloc(mdoc);
1.25      kristaps  492:
                    493:        p->type = MDOC_ROOT;
                    494:
                    495:        return(mdoc_node_append(mdoc, p));
                    496: }
                    497:
                    498:
                    499: int
1.22      kristaps  500: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
                    501:                int tok, size_t argsz, const struct mdoc_arg *args)
1.1       kristaps  502: {
                    503:        struct mdoc_node *p;
                    504:
1.46      kristaps  505:        p = mdoc_node_alloc(mdoc);
1.1       kristaps  506:
1.22      kristaps  507:        p->pos = pos;
                    508:        p->line = line;
1.1       kristaps  509:        p->type = MDOC_BLOCK;
1.27      kristaps  510:        p->tok = tok;
1.1       kristaps  511:        p->data.block.argc = argsz;
                    512:        p->data.block.argv = argdup(argsz, args);
                    513:
1.23      kristaps  514:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  515: }
                    516:
                    517:
1.23      kristaps  518: int
1.22      kristaps  519: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
                    520:                int tok, size_t argsz, const struct mdoc_arg *args)
1.1       kristaps  521: {
                    522:        struct mdoc_node *p;
                    523:
1.46      kristaps  524:        p = mdoc_node_alloc(mdoc);
1.22      kristaps  525:
                    526:        p->line = line;
                    527:        p->pos = pos;
1.1       kristaps  528:        p->type = MDOC_ELEM;
1.27      kristaps  529:        p->tok = tok;
1.1       kristaps  530:        p->data.elem.argc = argsz;
                    531:        p->data.elem.argv = argdup(argsz, args);
                    532:
1.23      kristaps  533:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  534: }
                    535:
                    536:
1.23      kristaps  537: int
1.22      kristaps  538: mdoc_word_alloc(struct mdoc *mdoc,
                    539:                int line, int pos, const char *word)
1.1       kristaps  540: {
                    541:        struct mdoc_node *p;
                    542:
1.46      kristaps  543:        p = mdoc_node_alloc(mdoc);
1.45      kristaps  544:
1.22      kristaps  545:        p->line = line;
                    546:        p->pos = pos;
1.1       kristaps  547:        p->type = MDOC_TEXT;
                    548:        p->data.text.string = xstrdup(word);
                    549:
1.23      kristaps  550:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  551: }
                    552:
                    553:
                    554: static void
                    555: argfree(size_t sz, struct mdoc_arg *p)
                    556: {
1.2       kristaps  557:        int              i, j;
1.1       kristaps  558:
                    559:        if (0 == sz)
                    560:                return;
                    561:
                    562:        assert(p);
1.2       kristaps  563:        /* LINTED */
                    564:        for (i = 0; i < (int)sz; i++)
1.1       kristaps  565:                if (p[i].sz > 0) {
                    566:                        assert(p[i].value);
1.2       kristaps  567:                        /* LINTED */
                    568:                        for (j = 0; j < (int)p[i].sz; j++)
1.1       kristaps  569:                                free(p[i].value[j]);
1.19      kristaps  570:                        free(p[i].value);
1.1       kristaps  571:                }
                    572:        free(p);
                    573: }
                    574:
                    575:
                    576: static void
                    577: mdoc_elem_free(struct mdoc_elem *p)
                    578: {
                    579:
                    580:        argfree(p->argc, p->argv);
                    581: }
                    582:
                    583:
                    584: static void
                    585: mdoc_block_free(struct mdoc_block *p)
                    586: {
                    587:
                    588:        argfree(p->argc, p->argv);
                    589: }
                    590:
                    591:
                    592: static void
                    593: mdoc_text_free(struct mdoc_text *p)
                    594: {
                    595:
                    596:        if (p->string)
                    597:                free(p->string);
                    598: }
                    599:
                    600:
                    601: void
                    602: mdoc_node_free(struct mdoc_node *p)
                    603: {
                    604:
                    605:        switch (p->type) {
                    606:        case (MDOC_TEXT):
                    607:                mdoc_text_free(&p->data.text);
                    608:                break;
                    609:        case (MDOC_ELEM):
                    610:                mdoc_elem_free(&p->data.elem);
                    611:                break;
                    612:        case (MDOC_BLOCK):
                    613:                mdoc_block_free(&p->data.block);
                    614:                break;
                    615:        default:
                    616:                break;
                    617:        }
                    618:
                    619:        free(p);
                    620: }
                    621:
                    622:
1.37      kristaps  623: void
1.1       kristaps  624: mdoc_node_freelist(struct mdoc_node *p)
                    625: {
                    626:
                    627:        if (p->child)
                    628:                mdoc_node_freelist(p->child);
                    629:        if (p->next)
                    630:                mdoc_node_freelist(p->next);
                    631:
                    632:        mdoc_node_free(p);
                    633: }
                    634:
                    635:
                    636: int
                    637: mdoc_find(const struct mdoc *mdoc, const char *key)
                    638: {
                    639:
1.4       kristaps  640:        return(mdoc_tokhash_find(mdoc->htab, key));
1.1       kristaps  641: }
                    642:
                    643:
                    644: static void
                    645: argcpy(struct mdoc_arg *dst, const struct mdoc_arg *src)
                    646: {
1.2       kristaps  647:        int              i;
1.1       kristaps  648:
1.26      kristaps  649:        dst->line = src->line;
                    650:        dst->pos = src->pos;
1.1       kristaps  651:        dst->arg = src->arg;
                    652:        if (0 == (dst->sz = src->sz))
                    653:                return;
                    654:        dst->value = xcalloc(dst->sz, sizeof(char *));
1.2       kristaps  655:        for (i = 0; i < (int)dst->sz; i++)
1.1       kristaps  656:                dst->value[i] = xstrdup(src->value[i]);
                    657: }
                    658:
                    659:
                    660: static struct mdoc_arg *
                    661: argdup(size_t argsz, const struct mdoc_arg *args)
                    662: {
                    663:        struct mdoc_arg *pp;
1.2       kristaps  664:        int              i;
1.1       kristaps  665:
                    666:        if (0 == argsz)
                    667:                return(NULL);
                    668:
                    669:        pp = xcalloc((size_t)argsz, sizeof(struct mdoc_arg));
1.2       kristaps  670:        for (i = 0; i < (int)argsz; i++)
1.1       kristaps  671:                argcpy(&pp[i], &args[i]);
                    672:
                    673:        return(pp);
                    674: }
                    675:
1.35      kristaps  676:
1.36      kristaps  677: /* FIXME: deprecate. */
1.35      kristaps  678: char *
                    679: mdoc_node2a(struct mdoc_node *node)
                    680: {
                    681:        static char      buf[64];
                    682:
                    683:        assert(node);
                    684:
                    685:        buf[0] = 0;
                    686:        (void)xstrlcat(buf, mdoc_type2a(node->type), 64);
                    687:        if (MDOC_ROOT == node->type)
                    688:                return(buf);
                    689:        (void)xstrlcat(buf, " `", 64);
                    690:        if (MDOC_TEXT == node->type)
                    691:                (void)xstrlcat(buf, node->data.text.string, 64);
                    692:        else
                    693:                (void)xstrlcat(buf, mdoc_macronames[node->tok], 64);
1.36      kristaps  694:        (void)xstrlcat(buf, "'", 64);
1.35      kristaps  695:
                    696:        return(buf);
                    697: }
                    698:
                    699:

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