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Annotation of mandoc/mdoc.c, Revision 1.47

1.47    ! kristaps    1: /* $Id: mdoc.c,v 1.46 2009/02/22 14:31:08 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
                     32:  * in macro.c, but this orchestrates who does what, when.
                     33:  */
                     34:
1.1       kristaps   35: const  char *const __mdoc_macronames[MDOC_MAX] = {
                     36:        "\\\"",         "Dd",           "Dt",           "Os",
                     37:        "Sh",           "Ss",           "Pp",           "D1",
                     38:        "Dl",           "Bd",           "Ed",           "Bl",
                     39:        "El",           "It",           "Ad",           "An",
                     40:        "Ar",           "Cd",           "Cm",           "Dv",
                     41:        "Er",           "Ev",           "Ex",           "Fa",
                     42:        "Fd",           "Fl",           "Fn",           "Ft",
                     43:        "Ic",           "In",           "Li",           "Nd",
                     44:        "Nm",           "Op",           "Ot",           "Pa",
                     45:        "Rv",           "St",           "Va",           "Vt",
                     46:        /* LINTED */
                     47:        "Xr",           "\%A",          "\%B",          "\%D",
                     48:        /* LINTED */
                     49:        "\%I",          "\%J",          "\%N",          "\%O",
                     50:        /* LINTED */
                     51:        "\%P",          "\%R",          "\%T",          "\%V",
                     52:        "Ac",           "Ao",           "Aq",           "At",
                     53:        "Bc",           "Bf",           "Bo",           "Bq",
                     54:        "Bsx",          "Bx",           "Db",           "Dc",
                     55:        "Do",           "Dq",           "Ec",           "Ef",
                     56:        "Em",           "Eo",           "Fx",           "Ms",
                     57:        "No",           "Ns",           "Nx",           "Ox",
                     58:        "Pc",           "Pf",           "Po",           "Pq",
                     59:        "Qc",           "Ql",           "Qo",           "Qq",
                     60:        "Re",           "Rs",           "Sc",           "So",
                     61:        "Sq",           "Sm",           "Sx",           "Sy",
                     62:        "Tn",           "Ux",           "Xc",           "Xo",
                     63:        "Fo",           "Fc",           "Oo",           "Oc",
                     64:        "Bk",           "Ek",           "Bt",           "Hf",
                     65:        "Fr",           "Ud",
                     66:        };
                     67:
                     68: const  char *const __mdoc_argnames[MDOC_ARG_MAX] = {
                     69:        "split",                "nosplit",              "ragged",
                     70:        "unfilled",             "literal",              "file",
                     71:        "offset",               "bullet",               "dash",
                     72:        "hyphen",               "item",                 "enum",
                     73:        "tag",                  "diag",                 "hang",
                     74:        "ohang",                "inset",                "column",
                     75:        "width",                "compact",              "std",
                     76:        "p1003.1-88",           "p1003.1-90",           "p1003.1-96",
                     77:        "p1003.1-2001",         "p1003.1-2004",         "p1003.1",
                     78:        "p1003.1b",             "p1003.1b-93",          "p1003.1c-95",
                     79:        "p1003.1g-2000",        "p1003.2-92",           "p1387.2-95",
                     80:        "p1003.2",              "p1387.2",              "isoC-90",
                     81:        "isoC-amd1",            "isoC-tcor1",           "isoC-tcor2",
                     82:        "isoC-99",              "ansiC",                "ansiC-89",
                     83:        "ansiC-99",             "ieee754",              "iso8802-3",
                     84:        "xpg3",                 "xpg4",                 "xpg4.2",
                     85:        "xpg4.3",               "xbd5",                 "xcu5",
                     86:        "xsh5",                 "xns5",                 "xns5.2d2.0",
                     87:        "xcurses4.2",           "susv2",                "susv3",
                     88:        "svid4",                "filled",               "words",
1.14      kristaps   89:        "emphasis",             "symbolic",
1.1       kristaps   90:        };
                     91:
1.41      kristaps   92: /* Central table of library: who gets parsed how. */
                     93:
1.1       kristaps   94: const  struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
                     95:        { NULL, 0 }, /* \" */
1.39      kristaps   96:        { macro_constant, MDOC_PROLOGUE }, /* Dd */
                     97:        { macro_constant, MDOC_PROLOGUE }, /* Dt */
                     98:        { macro_constant, MDOC_PROLOGUE }, /* Os */
1.13      kristaps   99:        { macro_scoped, 0 }, /* Sh */
                    100:        { macro_scoped, 0 }, /* Ss */
1.5       kristaps  101:        { macro_text, 0 }, /* Pp */
1.19      kristaps  102:        { macro_scoped_line, MDOC_PARSED }, /* D1 */
                    103:        { macro_scoped_line, MDOC_PARSED }, /* Dl */
1.13      kristaps  104:        { macro_scoped, MDOC_EXPLICIT }, /* Bd */
1.29      kristaps  105:        { macro_scoped_close, MDOC_EXPLICIT }, /* Ed */
1.13      kristaps  106:        { macro_scoped, MDOC_EXPLICIT }, /* Bl */
1.29      kristaps  107:        { macro_scoped_close, MDOC_EXPLICIT }, /* El */
1.43      kristaps  108:        { macro_scoped, MDOC_PARSED }, /* It */
1.19      kristaps  109:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
1.32      kristaps  110:        { macro_text, MDOC_PARSED }, /* An */
1.19      kristaps  111:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.43      kristaps  112:        { macro_constant, 0 }, /* Cd */
1.19      kristaps  113:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
                    114:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
                    115:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
                    116:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
1.13      kristaps  117:        { macro_constant, 0 }, /* Ex */
1.43      kristaps  118:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */
1.13      kristaps  119:        { macro_constant, 0 }, /* Fd */
1.19      kristaps  120:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
1.43      kristaps  121:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */
                    122:        { macro_text, MDOC_PARSED }, /* Ft */
1.19      kristaps  123:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Ic */
1.13      kristaps  124:        { macro_constant, 0 }, /* In */
1.19      kristaps  125:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Li */
1.10      kristaps  126:        { macro_constant, 0 }, /* Nd */
1.19      kristaps  127:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
                    128:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
1.13      kristaps  129:        { macro_obsolete, 0 }, /* Ot */
1.19      kristaps  130:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
1.13      kristaps  131:        { macro_constant, 0 }, /* Rv */
1.22      kristaps  132:        /* XXX - .St supposed to be (but isn't) callable. */
1.19      kristaps  133:        { macro_constant_delimited, MDOC_PARSED }, /* St */
                    134:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
                    135:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
                    136:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.43      kristaps  137:        { macro_constant, 0 }, /* %A */
                    138:        { macro_constant, 0 }, /* %B */
                    139:        { macro_constant, 0 }, /* %D */
                    140:        { macro_constant, 0 }, /* %I */
                    141:        { macro_constant, 0 }, /* %J */
                    142:        { macro_constant, 0 }, /* %N */
                    143:        { macro_constant, 0 }, /* %O */
                    144:        { macro_constant, 0 }, /* %P */
                    145:        { macro_constant, 0 }, /* %R */
                    146:        { macro_constant, 0 }, /* %T */
                    147:        { macro_constant, 0 }, /* %V */
1.29      kristaps  148:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ac */
                    149:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ao */
1.19      kristaps  150:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Aq */
1.34      kristaps  151:        { macro_constant_delimited, 0 }, /* At */
1.29      kristaps  152:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Bc */
1.16      kristaps  153:        { macro_scoped, MDOC_EXPLICIT }, /* Bf */
1.29      kristaps  154:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bo */
1.19      kristaps  155:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Bq */
                    156:        { macro_constant_delimited, MDOC_PARSED }, /* Bsx */
                    157:        { macro_constant_delimited, MDOC_PARSED }, /* Bx */
1.13      kristaps  158:        { macro_constant, 0 }, /* Db */
1.29      kristaps  159:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Dc */
                    160:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Do */
1.19      kristaps  161:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dq */
1.29      kristaps  162:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ec */
                    163:        { macro_scoped_close, MDOC_EXPLICIT }, /* Ef */
1.19      kristaps  164:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Em */
1.29      kristaps  165:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
1.19      kristaps  166:        { macro_constant_delimited, MDOC_PARSED }, /* Fx */
                    167:        { macro_text, MDOC_PARSED }, /* Ms */
                    168:        { macro_constant_delimited, MDOC_CALLABLE | MDOC_PARSED }, /* No */
                    169:        { macro_constant_delimited, MDOC_CALLABLE | MDOC_PARSED }, /* Ns */
                    170:        { macro_constant_delimited, MDOC_PARSED }, /* Nx */
                    171:        { macro_constant_delimited, MDOC_PARSED }, /* Ox */
1.29      kristaps  172:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Pc */
1.32      kristaps  173:        { macro_constant_delimited, MDOC_PARSED }, /* Pf */
1.29      kristaps  174:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Po */
1.19      kristaps  175:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pq */
1.29      kristaps  176:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Qc */
1.19      kristaps  177:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ql */
1.29      kristaps  178:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Qo */
1.19      kristaps  179:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Qq */
1.29      kristaps  180:        { macro_scoped_close, MDOC_EXPLICIT }, /* Re */
1.13      kristaps  181:        { macro_scoped, MDOC_EXPLICIT }, /* Rs */
1.29      kristaps  182:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Sc */
                    183:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* So */
1.19      kristaps  184:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sq */
1.13      kristaps  185:        { macro_constant, 0 }, /* Sm */
1.19      kristaps  186:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Sx */
                    187:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Sy */
                    188:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
                    189:        { macro_constant_delimited, MDOC_PARSED }, /* Ux */
1.29      kristaps  190:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
                    191:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
1.19      kristaps  192:        /* XXX - .Fo supposed to be (but isn't) callable. */
1.43      kristaps  193:        { macro_scoped, MDOC_EXPLICIT }, /* Fo */
1.19      kristaps  194:        /* XXX - .Fc supposed to be (but isn't) callable. */
1.43      kristaps  195:        { macro_scoped_close, MDOC_EXPLICIT }, /* Fc */
1.29      kristaps  196:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Oo */
                    197:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Oc */
1.17      kristaps  198:        { macro_scoped, MDOC_EXPLICIT }, /* Bk */
1.29      kristaps  199:        { macro_scoped_close, MDOC_EXPLICIT }, /* Ek */
1.9       kristaps  200:        { macro_constant, 0 }, /* Bt */
1.10      kristaps  201:        { macro_constant, 0 }, /* Hf */
1.12      kristaps  202:        { macro_obsolete, 0 }, /* Fr */
1.9       kristaps  203:        { macro_constant, 0 }, /* Ud */
1.1       kristaps  204: };
                    205:
                    206: const  char * const *mdoc_macronames = __mdoc_macronames;
                    207: const  char * const *mdoc_argnames = __mdoc_argnames;
                    208: const  struct mdoc_macro * const mdoc_macros = __mdoc_macros;
                    209:
                    210: static struct mdoc_arg  *argdup(size_t, const struct mdoc_arg *);
                    211: static void              argfree(size_t, struct mdoc_arg *);
                    212: static void              argcpy(struct mdoc_arg *,
                    213:                                const struct mdoc_arg *);
                    214:
1.46      kristaps  215: static struct mdoc_node *mdoc_node_alloc(const struct mdoc *);
1.23      kristaps  216: static int               mdoc_node_append(struct mdoc *,
1.1       kristaps  217:                                struct mdoc_node *);
                    218: static void              mdoc_elem_free(struct mdoc_elem *);
                    219: static void              mdoc_text_free(struct mdoc_text *);
                    220:
                    221:
1.45      kristaps  222:
1.1       kristaps  223: const struct mdoc_node *
1.47    ! kristaps  224: mdoc_node(const struct mdoc *mdoc)
1.1       kristaps  225: {
                    226:
                    227:        return(mdoc->first);
                    228: }
                    229:
                    230:
1.37      kristaps  231: const struct mdoc_meta *
1.47    ! kristaps  232: mdoc_meta(const struct mdoc *mdoc)
1.37      kristaps  233: {
                    234:
                    235:        return(&mdoc->meta);
                    236: }
                    237:
                    238:
1.1       kristaps  239: void
1.38      kristaps  240: mdoc_free(struct mdoc *mdoc)
1.34      kristaps  241: {
                    242:
1.38      kristaps  243:        if (mdoc->first)
                    244:                mdoc_node_freelist(mdoc->first);
                    245:        if (mdoc->htab)
                    246:                mdoc_tokhash_free(mdoc->htab);
1.34      kristaps  247:        if (mdoc->meta.title)
                    248:                free(mdoc->meta.title);
                    249:        if (mdoc->meta.os)
                    250:                free(mdoc->meta.os);
                    251:        if (mdoc->meta.name)
                    252:                free(mdoc->meta.name);
                    253:
1.1       kristaps  254:        free(mdoc);
                    255: }
                    256:
                    257:
                    258: struct mdoc *
                    259: mdoc_alloc(void *data, const struct mdoc_cb *cb)
                    260: {
                    261:        struct mdoc     *p;
                    262:
                    263:        p = xcalloc(1, sizeof(struct mdoc));
                    264:
                    265:        p->data = data;
1.33      kristaps  266:        if (cb)
                    267:                (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
1.1       kristaps  268:
1.25      kristaps  269:        p->last = xcalloc(1, sizeof(struct mdoc_node));
                    270:        p->last->type = MDOC_ROOT;
                    271:        p->first = p->last;
                    272:
                    273:        p->next = MDOC_NEXT_CHILD;
1.4       kristaps  274:        p->htab = mdoc_tokhash_alloc();
1.25      kristaps  275:
1.1       kristaps  276:        return(p);
                    277: }
                    278:
                    279:
                    280: int
1.20      kristaps  281: mdoc_endparse(struct mdoc *mdoc)
                    282: {
                    283:
                    284:        if (MDOC_HALT & mdoc->flags)
                    285:                return(0);
                    286:        if (NULL == mdoc->first)
                    287:                return(1);
                    288:
                    289:        assert(mdoc->last);
                    290:        if ( ! macro_end(mdoc)) {
                    291:                mdoc->flags |= MDOC_HALT;
                    292:                return(0);
                    293:        }
                    294:        return(1);
                    295: }
                    296:
                    297:
                    298: int
                    299: mdoc_parseln(struct mdoc *mdoc, int line, char *buf)
1.1       kristaps  300: {
                    301:        int               c, i;
                    302:        char              tmp[5];
                    303:
1.20      kristaps  304:        if (MDOC_HALT & mdoc->flags)
                    305:                return(0);
                    306:
1.39      kristaps  307:        mdoc->linetok = 0;
                    308:
1.5       kristaps  309:        if ('.' != *buf) {
1.44      kristaps  310:                if (SEC_PROLOGUE == mdoc->lastnamed)
                    311:                        return(mdoc_perr(mdoc, line, 0, "text disallowed in document prologue"));
1.39      kristaps  312:                if ( ! mdoc_word_alloc(mdoc, line, 0, buf))
                    313:                        return(0);
                    314:                mdoc->next = MDOC_NEXT_SIBLING;
                    315:                return(1);
1.1       kristaps  316:        }
                    317:
                    318:        if (buf[1] && '\\' == buf[1])
                    319:                if (buf[2] && '\"' == buf[2])
                    320:                        return(1);
                    321:
                    322:        i = 1;
1.42      kristaps  323:        while (buf[i] && ! isspace((int)buf[i]) && i < (int)sizeof(tmp))
1.1       kristaps  324:                i++;
                    325:
1.20      kristaps  326:        if (i == (int)sizeof(tmp)) {
                    327:                mdoc->flags |= MDOC_HALT;
1.31      kristaps  328:                return(mdoc_perr(mdoc, line, 1, "unknown macro"));
1.20      kristaps  329:        } else if (i <= 2) {
                    330:                mdoc->flags |= MDOC_HALT;
1.31      kristaps  331:                return(mdoc_perr(mdoc, line, 1, "unknown macro"));
1.20      kristaps  332:        }
1.1       kristaps  333:
                    334:        i--;
                    335:
1.2       kristaps  336:        (void)memcpy(tmp, buf + 1, (size_t)i);
1.1       kristaps  337:        tmp[i++] = 0;
                    338:
1.20      kristaps  339:        if (MDOC_MAX == (c = mdoc_find(mdoc, tmp))) {
                    340:                mdoc->flags |= MDOC_HALT;
1.31      kristaps  341:                return(mdoc_perr(mdoc, line, 1, "unknown macro"));
1.20      kristaps  342:        }
1.1       kristaps  343:
1.42      kristaps  344:        while (buf[i] && isspace((int)buf[i]))
1.1       kristaps  345:                i++;
                    346:
1.21      kristaps  347:        if ( ! mdoc_macro(mdoc, c, line, 1, &i, buf)) {
1.20      kristaps  348:                mdoc->flags |= MDOC_HALT;
                    349:                return(0);
                    350:        }
                    351:        return(1);
1.1       kristaps  352: }
                    353:
                    354:
                    355: void
1.31      kristaps  356: mdoc_vmsg(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
1.1       kristaps  357: {
1.31      kristaps  358:        char              buf[256];
1.23      kristaps  359:        va_list           ap;
1.1       kristaps  360:
                    361:        if (NULL == mdoc->cb.mdoc_msg)
                    362:                return;
                    363:
                    364:        va_start(ap, fmt);
1.31      kristaps  365:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1.1       kristaps  366:        va_end(ap);
1.31      kristaps  367:        (*mdoc->cb.mdoc_msg)(mdoc->data, ln, pos, buf);
1.1       kristaps  368: }
                    369:
                    370:
                    371: int
1.31      kristaps  372: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
                    373:                const char *fmt, ...)
1.1       kristaps  374: {
1.31      kristaps  375:        char             buf[256];
                    376:        va_list          ap;
1.1       kristaps  377:
                    378:        if (NULL == mdoc->cb.mdoc_err)
                    379:                return(0);
1.31      kristaps  380:
                    381:        va_start(ap, fmt);
                    382:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    383:        va_end(ap);
                    384:        return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1       kristaps  385: }
                    386:
                    387:
                    388: int
1.31      kristaps  389: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos,
                    390:                enum mdoc_warn type, const char *fmt, ...)
1.1       kristaps  391: {
1.31      kristaps  392:        char             buf[256];
                    393:        va_list          ap;
1.1       kristaps  394:
                    395:        if (NULL == mdoc->cb.mdoc_warn)
                    396:                return(0);
1.31      kristaps  397:
                    398:        va_start(ap, fmt);
                    399:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
                    400:        va_end(ap);
                    401:        return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, type, buf));
1.1       kristaps  402: }
                    403:
                    404:
                    405: int
1.21      kristaps  406: mdoc_macro(struct mdoc *mdoc, int tok,
1.23      kristaps  407:                int ln, int ppos, int *pos, char *buf)
1.1       kristaps  408: {
                    409:
1.31      kristaps  410:        assert(mdoc_macros[tok].fp);
                    411:
1.44      kristaps  412:        if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
                    413:                        SEC_PROLOGUE != mdoc->lastnamed)
                    414:                return(mdoc_perr(mdoc, ln, ppos, "macro disallowed in document body"));
                    415:        if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
                    416:                        SEC_PROLOGUE == mdoc->lastnamed)
                    417:                return(mdoc_perr(mdoc, ln, ppos, "macro disallowed in document prologue"));
1.23      kristaps  418:        if (1 != ppos && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
1.31      kristaps  419:                return(mdoc_perr(mdoc, ln, ppos, "macro not callable"));
1.23      kristaps  420:        return((*mdoc_macros[tok].fp)(mdoc, tok, ln, ppos, pos, buf));
1.1       kristaps  421: }
                    422:
                    423:
1.23      kristaps  424: static int
                    425: mdoc_node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1       kristaps  426: {
1.30      kristaps  427:        const char       *nn, *nt, *on, *ot, *act;
1.1       kristaps  428:
1.25      kristaps  429:        assert(mdoc->last);
                    430:        assert(mdoc->first);
                    431:        assert(MDOC_ROOT != p->type);
1.1       kristaps  432:
1.39      kristaps  433:        /* See if we exceed the suggest line-max. */
                    434:
                    435:        switch (p->type) {
                    436:        case (MDOC_TEXT):
                    437:                /* FALLTHROUGH */
                    438:        case (MDOC_ELEM):
                    439:                /* FALLTHROUGH */
                    440:        case (MDOC_BLOCK):
                    441:                mdoc->linetok++;
                    442:                break;
                    443:        default:
                    444:                break;
                    445:        }
                    446:
1.40      kristaps  447:        /* This sort-of works (re-opening of text macros...). */
1.39      kristaps  448:        if (mdoc->linetok > MDOC_LINEARG_SOFTMAX)
                    449:                if ( ! mdoc_nwarn(mdoc, p, WARN_COMPAT,
                    450:                                        "suggested %d tokens per line exceeded (has %d)",
                    451:                                        MDOC_LINEARG_SOFTMAX, mdoc->linetok))
                    452:                        return(0);
                    453:
1.27      kristaps  454:        if (MDOC_TEXT == mdoc->last->type)
                    455:                on = "<text>";
                    456:        else if (MDOC_ROOT == mdoc->last->type)
                    457:                on = "<root>";
                    458:        else
                    459:                on = mdoc_macronames[mdoc->last->tok];
                    460:
1.30      kristaps  461:        if (MDOC_TEXT == p->type)
                    462:                nn = "<text>";
                    463:        else if (MDOC_ROOT == p->type)
                    464:                nn = "<root>";
                    465:        else
                    466:                nn = mdoc_macronames[p->tok];
                    467:
                    468:        ot = mdoc_type2a(mdoc->last->type);
                    469:        nt = mdoc_type2a(p->type);
1.1       kristaps  470:
1.13      kristaps  471:        switch (mdoc->next) {
                    472:        case (MDOC_NEXT_SIBLING):
1.6       kristaps  473:                mdoc->last->next = p;
                    474:                p->prev = mdoc->last;
1.13      kristaps  475:                p->parent = mdoc->last->parent;
1.6       kristaps  476:                act = "sibling";
1.1       kristaps  477:                break;
1.13      kristaps  478:        case (MDOC_NEXT_CHILD):
                    479:                mdoc->last->child = p;
1.1       kristaps  480:                p->parent = mdoc->last;
                    481:                act = "child";
                    482:                break;
                    483:        default:
1.13      kristaps  484:                abort();
                    485:                /* NOTREACHED */
1.1       kristaps  486:        }
                    487:
1.23      kristaps  488:        if ( ! mdoc_valid_pre(mdoc, p))
                    489:                return(0);
1.27      kristaps  490:
                    491:        switch (p->type) {
                    492:        case (MDOC_HEAD):
                    493:                assert(MDOC_BLOCK == p->parent->type);
                    494:                p->parent->data.block.head = p;
                    495:                break;
                    496:        case (MDOC_TAIL):
                    497:                assert(MDOC_BLOCK == p->parent->type);
                    498:                p->parent->data.block.tail = p;
                    499:                break;
                    500:        case (MDOC_BODY):
                    501:                assert(MDOC_BLOCK == p->parent->type);
                    502:                p->parent->data.block.body = p;
                    503:                break;
                    504:        default:
                    505:                break;
                    506:        }
                    507:
1.1       kristaps  508:        mdoc->last = p;
1.30      kristaps  509:        mdoc_msg(mdoc, "parse: %s `%s' %s of %s `%s'",
                    510:                        nt, nn, act, ot, on);
1.23      kristaps  511:        return(1);
1.1       kristaps  512: }
                    513:
                    514:
1.45      kristaps  515: static struct mdoc_node *
1.46      kristaps  516: mdoc_node_alloc(const struct mdoc *mdoc)
1.45      kristaps  517: {
1.46      kristaps  518:        struct mdoc_node *p;
                    519:
                    520:        p = xcalloc(1, sizeof(struct mdoc_node));
                    521:        p->sec = mdoc->lastsec;
1.45      kristaps  522:
1.46      kristaps  523:        return(p);
1.45      kristaps  524: }
                    525:
                    526:
1.23      kristaps  527: int
1.22      kristaps  528: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.17      kristaps  529: {
                    530:        struct mdoc_node *p;
                    531:
                    532:        assert(mdoc->first);
                    533:        assert(mdoc->last);
                    534:
1.46      kristaps  535:        p = mdoc_node_alloc(mdoc);
1.17      kristaps  536:
1.22      kristaps  537:        p->line = line;
                    538:        p->pos = pos;
1.17      kristaps  539:        p->type = MDOC_TAIL;
1.27      kristaps  540:        p->tok = tok;
1.17      kristaps  541:
1.23      kristaps  542:        return(mdoc_node_append(mdoc, p));
1.17      kristaps  543: }
                    544:
                    545:
1.23      kristaps  546: int
1.22      kristaps  547: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1       kristaps  548: {
                    549:        struct mdoc_node *p;
                    550:
                    551:        assert(mdoc->first);
                    552:        assert(mdoc->last);
                    553:
1.46      kristaps  554:        p = mdoc_node_alloc(mdoc);
1.13      kristaps  555:
1.22      kristaps  556:        p->line = line;
                    557:        p->pos = pos;
1.1       kristaps  558:        p->type = MDOC_HEAD;
1.27      kristaps  559:        p->tok = tok;
1.1       kristaps  560:
1.23      kristaps  561:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  562: }
                    563:
                    564:
1.23      kristaps  565: int
1.22      kristaps  566: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1       kristaps  567: {
                    568:        struct mdoc_node *p;
                    569:
                    570:        assert(mdoc->first);
                    571:        assert(mdoc->last);
                    572:
1.46      kristaps  573:        p = mdoc_node_alloc(mdoc);
1.1       kristaps  574:
1.22      kristaps  575:        p->line = line;
                    576:        p->pos = pos;
1.1       kristaps  577:        p->type = MDOC_BODY;
1.27      kristaps  578:        p->tok = tok;
1.1       kristaps  579:
1.23      kristaps  580:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  581: }
                    582:
                    583:
1.23      kristaps  584: int
1.25      kristaps  585: mdoc_root_alloc(struct mdoc *mdoc)
                    586: {
                    587:        struct mdoc_node *p;
                    588:
1.46      kristaps  589:        p = mdoc_node_alloc(mdoc);
1.25      kristaps  590:
                    591:        p->type = MDOC_ROOT;
                    592:
                    593:        return(mdoc_node_append(mdoc, p));
                    594: }
                    595:
                    596:
                    597: int
1.22      kristaps  598: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
                    599:                int tok, size_t argsz, const struct mdoc_arg *args)
1.1       kristaps  600: {
                    601:        struct mdoc_node *p;
                    602:
1.46      kristaps  603:        p = mdoc_node_alloc(mdoc);
1.1       kristaps  604:
1.22      kristaps  605:        p->pos = pos;
                    606:        p->line = line;
1.1       kristaps  607:        p->type = MDOC_BLOCK;
1.27      kristaps  608:        p->tok = tok;
1.1       kristaps  609:        p->data.block.argc = argsz;
                    610:        p->data.block.argv = argdup(argsz, args);
                    611:
1.23      kristaps  612:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  613: }
                    614:
                    615:
1.23      kristaps  616: int
1.22      kristaps  617: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
                    618:                int tok, size_t argsz, const struct mdoc_arg *args)
1.1       kristaps  619: {
                    620:        struct mdoc_node *p;
                    621:
1.46      kristaps  622:        p = mdoc_node_alloc(mdoc);
1.22      kristaps  623:
                    624:        p->line = line;
                    625:        p->pos = pos;
1.1       kristaps  626:        p->type = MDOC_ELEM;
1.27      kristaps  627:        p->tok = tok;
1.1       kristaps  628:        p->data.elem.argc = argsz;
                    629:        p->data.elem.argv = argdup(argsz, args);
                    630:
1.23      kristaps  631:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  632: }
                    633:
                    634:
1.23      kristaps  635: int
1.22      kristaps  636: mdoc_word_alloc(struct mdoc *mdoc,
                    637:                int line, int pos, const char *word)
1.1       kristaps  638: {
                    639:        struct mdoc_node *p;
                    640:
1.46      kristaps  641:        p = mdoc_node_alloc(mdoc);
1.45      kristaps  642:
1.22      kristaps  643:        p->line = line;
                    644:        p->pos = pos;
1.1       kristaps  645:        p->type = MDOC_TEXT;
                    646:        p->data.text.string = xstrdup(word);
                    647:
1.23      kristaps  648:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  649: }
                    650:
                    651:
                    652: static void
                    653: argfree(size_t sz, struct mdoc_arg *p)
                    654: {
1.2       kristaps  655:        int              i, j;
1.1       kristaps  656:
                    657:        if (0 == sz)
                    658:                return;
                    659:
                    660:        assert(p);
1.2       kristaps  661:        /* LINTED */
                    662:        for (i = 0; i < (int)sz; i++)
1.1       kristaps  663:                if (p[i].sz > 0) {
                    664:                        assert(p[i].value);
1.2       kristaps  665:                        /* LINTED */
                    666:                        for (j = 0; j < (int)p[i].sz; j++)
1.1       kristaps  667:                                free(p[i].value[j]);
1.19      kristaps  668:                        free(p[i].value);
1.1       kristaps  669:                }
                    670:        free(p);
                    671: }
                    672:
                    673:
                    674: static void
                    675: mdoc_elem_free(struct mdoc_elem *p)
                    676: {
                    677:
                    678:        argfree(p->argc, p->argv);
                    679: }
                    680:
                    681:
                    682: static void
                    683: mdoc_block_free(struct mdoc_block *p)
                    684: {
                    685:
                    686:        argfree(p->argc, p->argv);
                    687: }
                    688:
                    689:
                    690: static void
                    691: mdoc_text_free(struct mdoc_text *p)
                    692: {
                    693:
                    694:        if (p->string)
                    695:                free(p->string);
                    696: }
                    697:
                    698:
                    699: void
                    700: mdoc_node_free(struct mdoc_node *p)
                    701: {
                    702:
                    703:        switch (p->type) {
                    704:        case (MDOC_TEXT):
                    705:                mdoc_text_free(&p->data.text);
                    706:                break;
                    707:        case (MDOC_ELEM):
                    708:                mdoc_elem_free(&p->data.elem);
                    709:                break;
                    710:        case (MDOC_BLOCK):
                    711:                mdoc_block_free(&p->data.block);
                    712:                break;
                    713:        default:
                    714:                break;
                    715:        }
                    716:
                    717:        free(p);
                    718: }
                    719:
                    720:
1.37      kristaps  721: void
1.1       kristaps  722: mdoc_node_freelist(struct mdoc_node *p)
                    723: {
                    724:
                    725:        if (p->child)
                    726:                mdoc_node_freelist(p->child);
                    727:        if (p->next)
                    728:                mdoc_node_freelist(p->next);
                    729:
                    730:        mdoc_node_free(p);
                    731: }
                    732:
                    733:
                    734: int
                    735: mdoc_find(const struct mdoc *mdoc, const char *key)
                    736: {
                    737:
1.4       kristaps  738:        return(mdoc_tokhash_find(mdoc->htab, key));
1.1       kristaps  739: }
                    740:
                    741:
                    742: static void
                    743: argcpy(struct mdoc_arg *dst, const struct mdoc_arg *src)
                    744: {
1.2       kristaps  745:        int              i;
1.1       kristaps  746:
1.26      kristaps  747:        dst->line = src->line;
                    748:        dst->pos = src->pos;
1.1       kristaps  749:        dst->arg = src->arg;
                    750:        if (0 == (dst->sz = src->sz))
                    751:                return;
                    752:        dst->value = xcalloc(dst->sz, sizeof(char *));
1.2       kristaps  753:        for (i = 0; i < (int)dst->sz; i++)
1.1       kristaps  754:                dst->value[i] = xstrdup(src->value[i]);
                    755: }
                    756:
                    757:
                    758: static struct mdoc_arg *
                    759: argdup(size_t argsz, const struct mdoc_arg *args)
                    760: {
                    761:        struct mdoc_arg *pp;
1.2       kristaps  762:        int              i;
1.1       kristaps  763:
                    764:        if (0 == argsz)
                    765:                return(NULL);
                    766:
                    767:        pp = xcalloc((size_t)argsz, sizeof(struct mdoc_arg));
1.2       kristaps  768:        for (i = 0; i < (int)argsz; i++)
1.1       kristaps  769:                argcpy(&pp[i], &args[i]);
                    770:
                    771:        return(pp);
                    772: }
                    773:
1.35      kristaps  774:
1.36      kristaps  775: /* FIXME: deprecate. */
1.35      kristaps  776: char *
                    777: mdoc_node2a(struct mdoc_node *node)
                    778: {
                    779:        static char      buf[64];
                    780:
                    781:        assert(node);
                    782:
                    783:        buf[0] = 0;
                    784:        (void)xstrlcat(buf, mdoc_type2a(node->type), 64);
                    785:        if (MDOC_ROOT == node->type)
                    786:                return(buf);
                    787:        (void)xstrlcat(buf, " `", 64);
                    788:        if (MDOC_TEXT == node->type)
                    789:                (void)xstrlcat(buf, node->data.text.string, 64);
                    790:        else
                    791:                (void)xstrlcat(buf, mdoc_macronames[node->tok], 64);
1.36      kristaps  792:        (void)xstrlcat(buf, "'", 64);
1.35      kristaps  793:
                    794:        return(buf);
                    795: }
                    796:
                    797:

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