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Annotation of mandoc/mdoc.c, Revision 1.31

1.31    ! kristaps    1: /* $Id: mdoc.c,v 1.30 2009/01/15 15:46:45 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:
                     29: const  char *const __mdoc_macronames[MDOC_MAX] = {
                     30:        "\\\"",         "Dd",           "Dt",           "Os",
                     31:        "Sh",           "Ss",           "Pp",           "D1",
                     32:        "Dl",           "Bd",           "Ed",           "Bl",
                     33:        "El",           "It",           "Ad",           "An",
                     34:        "Ar",           "Cd",           "Cm",           "Dv",
                     35:        "Er",           "Ev",           "Ex",           "Fa",
                     36:        "Fd",           "Fl",           "Fn",           "Ft",
                     37:        "Ic",           "In",           "Li",           "Nd",
                     38:        "Nm",           "Op",           "Ot",           "Pa",
                     39:        "Rv",           "St",           "Va",           "Vt",
                     40:        /* LINTED */
                     41:        "Xr",           "\%A",          "\%B",          "\%D",
                     42:        /* LINTED */
                     43:        "\%I",          "\%J",          "\%N",          "\%O",
                     44:        /* LINTED */
                     45:        "\%P",          "\%R",          "\%T",          "\%V",
                     46:        "Ac",           "Ao",           "Aq",           "At",
                     47:        "Bc",           "Bf",           "Bo",           "Bq",
                     48:        "Bsx",          "Bx",           "Db",           "Dc",
                     49:        "Do",           "Dq",           "Ec",           "Ef",
                     50:        "Em",           "Eo",           "Fx",           "Ms",
                     51:        "No",           "Ns",           "Nx",           "Ox",
                     52:        "Pc",           "Pf",           "Po",           "Pq",
                     53:        "Qc",           "Ql",           "Qo",           "Qq",
                     54:        "Re",           "Rs",           "Sc",           "So",
                     55:        "Sq",           "Sm",           "Sx",           "Sy",
                     56:        "Tn",           "Ux",           "Xc",           "Xo",
                     57:        "Fo",           "Fc",           "Oo",           "Oc",
                     58:        "Bk",           "Ek",           "Bt",           "Hf",
                     59:        "Fr",           "Ud",
                     60:        };
                     61:
                     62: const  char *const __mdoc_argnames[MDOC_ARG_MAX] = {
                     63:        "split",                "nosplit",              "ragged",
                     64:        "unfilled",             "literal",              "file",
                     65:        "offset",               "bullet",               "dash",
                     66:        "hyphen",               "item",                 "enum",
                     67:        "tag",                  "diag",                 "hang",
                     68:        "ohang",                "inset",                "column",
                     69:        "width",                "compact",              "std",
                     70:        "p1003.1-88",           "p1003.1-90",           "p1003.1-96",
                     71:        "p1003.1-2001",         "p1003.1-2004",         "p1003.1",
                     72:        "p1003.1b",             "p1003.1b-93",          "p1003.1c-95",
                     73:        "p1003.1g-2000",        "p1003.2-92",           "p1387.2-95",
                     74:        "p1003.2",              "p1387.2",              "isoC-90",
                     75:        "isoC-amd1",            "isoC-tcor1",           "isoC-tcor2",
                     76:        "isoC-99",              "ansiC",                "ansiC-89",
                     77:        "ansiC-99",             "ieee754",              "iso8802-3",
                     78:        "xpg3",                 "xpg4",                 "xpg4.2",
                     79:        "xpg4.3",               "xbd5",                 "xcu5",
                     80:        "xsh5",                 "xns5",                 "xns5.2d2.0",
                     81:        "xcurses4.2",           "susv2",                "susv3",
                     82:        "svid4",                "filled",               "words",
1.14      kristaps   83:        "emphasis",             "symbolic",
1.1       kristaps   84:        };
                     85:
                     86: const  struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
                     87:        { NULL, 0 }, /* \" */
1.24      kristaps   88:        { macro_constant, MDOC_PROLOGUE }, /* Dd */
                     89:        { macro_constant, MDOC_PROLOGUE }, /* Dt */
                     90:        { macro_constant, MDOC_PROLOGUE }, /* Os */
1.13      kristaps   91:        { macro_scoped, 0 }, /* Sh */
                     92:        { macro_scoped, 0 }, /* Ss */
1.5       kristaps   93:        { macro_text, 0 }, /* Pp */
1.19      kristaps   94:        { macro_scoped_line, MDOC_PARSED }, /* D1 */
                     95:        { macro_scoped_line, MDOC_PARSED }, /* Dl */
1.13      kristaps   96:        { macro_scoped, MDOC_EXPLICIT }, /* Bd */
1.29      kristaps   97:        { macro_scoped_close, MDOC_EXPLICIT }, /* Ed */
1.13      kristaps   98:        { macro_scoped, MDOC_EXPLICIT }, /* Bl */
1.29      kristaps   99:        { macro_scoped_close, MDOC_EXPLICIT }, /* El */
                    100:        { macro_scoped, MDOC_PARSED | MDOC_TABSEP}, /* It */
1.19      kristaps  101:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */
                    102:        { macro_constant, MDOC_PARSED }, /* An */
                    103:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */
1.12      kristaps  104:        { macro_constant, MDOC_QUOTABLE }, /* Cd */
1.19      kristaps  105:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */
                    106:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */
                    107:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Er */
                    108:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */
1.13      kristaps  109:        { macro_constant, 0 }, /* Ex */
1.19      kristaps  110:        { macro_text, MDOC_CALLABLE | MDOC_QUOTABLE | MDOC_PARSED }, /* Fa */
1.13      kristaps  111:        { macro_constant, 0 }, /* Fd */
1.19      kristaps  112:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */
                    113:        { macro_text, MDOC_CALLABLE | MDOC_QUOTABLE | MDOC_PARSED }, /* Fn */
                    114:        { macro_text, MDOC_PARSED }, /* Ft */
                    115:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Ic */
1.13      kristaps  116:        { macro_constant, 0 }, /* In */
1.19      kristaps  117:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Li */
1.10      kristaps  118:        { macro_constant, 0 }, /* Nd */
1.19      kristaps  119:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
                    120:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
1.13      kristaps  121:        { macro_obsolete, 0 }, /* Ot */
1.19      kristaps  122:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
1.13      kristaps  123:        { macro_constant, 0 }, /* Rv */
1.22      kristaps  124:        /* XXX - .St supposed to be (but isn't) callable. */
1.19      kristaps  125:        { macro_constant_delimited, MDOC_PARSED }, /* St */
                    126:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Va */
                    127:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */
                    128:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */
1.23      kristaps  129:        { macro_constant, MDOC_QUOTABLE }, /* %A */
                    130:        { macro_constant, MDOC_QUOTABLE }, /* %B */
1.13      kristaps  131:        { macro_constant, MDOC_QUOTABLE }, /* %D */
1.23      kristaps  132:        { macro_constant, MDOC_QUOTABLE }, /* %I */
                    133:        { macro_constant, MDOC_QUOTABLE }, /* %J */
1.13      kristaps  134:        { macro_constant, MDOC_QUOTABLE }, /* %N */
                    135:        { macro_constant, MDOC_QUOTABLE }, /* %O */
                    136:        { macro_constant, MDOC_QUOTABLE }, /* %P */
                    137:        { macro_constant, MDOC_QUOTABLE }, /* %R */
1.23      kristaps  138:        { macro_constant, MDOC_QUOTABLE }, /* %T */
1.13      kristaps  139:        { macro_constant, MDOC_QUOTABLE }, /* %V */
1.29      kristaps  140:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ac */
                    141:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ao */
1.19      kristaps  142:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Aq */
1.9       kristaps  143:        { macro_constant, 0 }, /* At */
1.29      kristaps  144:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Bc */
1.16      kristaps  145:        { macro_scoped, MDOC_EXPLICIT }, /* Bf */
1.29      kristaps  146:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bo */
1.19      kristaps  147:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Bq */
                    148:        { macro_constant_delimited, MDOC_PARSED }, /* Bsx */
                    149:        { macro_constant_delimited, MDOC_PARSED }, /* Bx */
1.13      kristaps  150:        { macro_constant, 0 }, /* Db */
1.29      kristaps  151:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Dc */
                    152:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Do */
1.19      kristaps  153:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dq */
1.29      kristaps  154:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ec */
                    155:        { macro_scoped_close, MDOC_EXPLICIT }, /* Ef */
1.19      kristaps  156:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Em */
1.29      kristaps  157:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */
1.19      kristaps  158:        { macro_constant_delimited, MDOC_PARSED }, /* Fx */
                    159:        { macro_text, MDOC_PARSED }, /* Ms */
                    160:        { macro_constant_delimited, MDOC_CALLABLE | MDOC_PARSED }, /* No */
                    161:        { macro_constant_delimited, MDOC_CALLABLE | MDOC_PARSED }, /* Ns */
                    162:        { macro_constant_delimited, MDOC_PARSED }, /* Nx */
                    163:        { macro_constant_delimited, MDOC_PARSED }, /* Ox */
1.29      kristaps  164:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Pc */
1.19      kristaps  165:        { macro_constant, MDOC_PARSED }, /* Pf */
1.29      kristaps  166:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Po */
1.19      kristaps  167:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pq */
1.29      kristaps  168:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Qc */
1.19      kristaps  169:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ql */
1.29      kristaps  170:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Qo */
1.19      kristaps  171:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Qq */
1.29      kristaps  172:        { macro_scoped_close, MDOC_EXPLICIT }, /* Re */
1.13      kristaps  173:        { macro_scoped, MDOC_EXPLICIT }, /* Rs */
1.29      kristaps  174:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Sc */
                    175:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* So */
1.19      kristaps  176:        { macro_scoped_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sq */
1.13      kristaps  177:        { macro_constant, 0 }, /* Sm */
1.19      kristaps  178:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Sx */
                    179:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Sy */
                    180:        { macro_text, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */
                    181:        { macro_constant_delimited, MDOC_PARSED }, /* Ux */
1.29      kristaps  182:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */
                    183:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */
1.19      kristaps  184:        /* XXX - .Fo supposed to be (but isn't) callable. */
                    185:        { macro_scoped, MDOC_EXPLICIT | MDOC_PARSED }, /* Fo */
                    186:        /* XXX - .Fc supposed to be (but isn't) callable. */
1.29      kristaps  187:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_PARSED }, /* Fc */
                    188:        { macro_constant_scoped, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Oo */
                    189:        { macro_scoped_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Oc */
1.17      kristaps  190:        { macro_scoped, MDOC_EXPLICIT }, /* Bk */
1.29      kristaps  191:        { macro_scoped_close, MDOC_EXPLICIT }, /* Ek */
1.9       kristaps  192:        { macro_constant, 0 }, /* Bt */
1.10      kristaps  193:        { macro_constant, 0 }, /* Hf */
1.12      kristaps  194:        { macro_obsolete, 0 }, /* Fr */
1.9       kristaps  195:        { macro_constant, 0 }, /* Ud */
1.1       kristaps  196: };
                    197:
                    198: const  char * const *mdoc_macronames = __mdoc_macronames;
                    199: const  char * const *mdoc_argnames = __mdoc_argnames;
                    200: const  struct mdoc_macro * const mdoc_macros = __mdoc_macros;
                    201:
                    202:
                    203: static struct mdoc_arg  *argdup(size_t, const struct mdoc_arg *);
                    204: static void              argfree(size_t, struct mdoc_arg *);
                    205: static void              argcpy(struct mdoc_arg *,
                    206:                                const struct mdoc_arg *);
                    207:
                    208: static void              mdoc_node_freelist(struct mdoc_node *);
1.23      kristaps  209: static int               mdoc_node_append(struct mdoc *,
1.1       kristaps  210:                                struct mdoc_node *);
                    211: static void              mdoc_elem_free(struct mdoc_elem *);
                    212: static void              mdoc_text_free(struct mdoc_text *);
                    213:
                    214:
                    215: const struct mdoc_node *
                    216: mdoc_result(struct mdoc *mdoc)
                    217: {
                    218:
                    219:        return(mdoc->first);
                    220: }
                    221:
                    222:
                    223: void
                    224: mdoc_free(struct mdoc *mdoc)
                    225: {
                    226:
                    227:        if (mdoc->first)
                    228:                mdoc_node_freelist(mdoc->first);
                    229:        if (mdoc->htab)
1.4       kristaps  230:                mdoc_tokhash_free(mdoc->htab);
1.1       kristaps  231:
                    232:        free(mdoc);
                    233: }
                    234:
                    235:
                    236: struct mdoc *
                    237: mdoc_alloc(void *data, const struct mdoc_cb *cb)
                    238: {
                    239:        struct mdoc     *p;
                    240:
                    241:        p = xcalloc(1, sizeof(struct mdoc));
                    242:
                    243:        p->data = data;
                    244:        (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
                    245:
1.25      kristaps  246:        p->last = xcalloc(1, sizeof(struct mdoc_node));
                    247:        p->last->type = MDOC_ROOT;
                    248:        p->first = p->last;
                    249:
                    250:        p->next = MDOC_NEXT_CHILD;
1.4       kristaps  251:        p->htab = mdoc_tokhash_alloc();
1.25      kristaps  252:
1.1       kristaps  253:        return(p);
                    254: }
                    255:
                    256:
                    257: int
1.20      kristaps  258: mdoc_endparse(struct mdoc *mdoc)
                    259: {
                    260:
                    261:        if (MDOC_HALT & mdoc->flags)
                    262:                return(0);
                    263:        if (NULL == mdoc->first)
                    264:                return(1);
                    265:
                    266:        assert(mdoc->last);
                    267:        if ( ! macro_end(mdoc)) {
                    268:                mdoc->flags |= MDOC_HALT;
                    269:                return(0);
                    270:        }
                    271:        return(1);
                    272: }
                    273:
                    274:
                    275: int
                    276: mdoc_parseln(struct mdoc *mdoc, int line, char *buf)
1.1       kristaps  277: {
                    278:        int               c, i;
                    279:        char              tmp[5];
                    280:
1.20      kristaps  281:        if (MDOC_HALT & mdoc->flags)
                    282:                return(0);
                    283:
1.5       kristaps  284:        if ('.' != *buf) {
1.23      kristaps  285:                if (SEC_PROLOGUE != mdoc->sec_lastn) {
1.26      kristaps  286:                        if ( ! mdoc_word_alloc(mdoc, line, 0, buf))
                    287:                                return(0);
1.23      kristaps  288:                        mdoc->next = MDOC_NEXT_SIBLING;
                    289:                        return(1);
                    290:                }
1.31    ! kristaps  291:                return(mdoc_perr(mdoc, line, 0, "text disallowed"));
1.1       kristaps  292:        }
                    293:
                    294:        if (buf[1] && '\\' == buf[1])
                    295:                if (buf[2] && '\"' == buf[2])
                    296:                        return(1);
                    297:
                    298:        i = 1;
                    299:        while (buf[i] && ! isspace(buf[i]) && i < (int)sizeof(tmp))
                    300:                i++;
                    301:
1.20      kristaps  302:        if (i == (int)sizeof(tmp)) {
                    303:                mdoc->flags |= MDOC_HALT;
1.31    ! kristaps  304:                return(mdoc_perr(mdoc, line, 1, "unknown macro"));
1.20      kristaps  305:        } else if (i <= 2) {
                    306:                mdoc->flags |= MDOC_HALT;
1.31    ! kristaps  307:                return(mdoc_perr(mdoc, line, 1, "unknown macro"));
1.20      kristaps  308:        }
1.1       kristaps  309:
                    310:        i--;
                    311:
1.2       kristaps  312:        (void)memcpy(tmp, buf + 1, (size_t)i);
1.1       kristaps  313:        tmp[i++] = 0;
                    314:
1.20      kristaps  315:        if (MDOC_MAX == (c = mdoc_find(mdoc, tmp))) {
                    316:                mdoc->flags |= MDOC_HALT;
1.31    ! kristaps  317:                return(mdoc_perr(mdoc, line, 1, "unknown macro"));
1.20      kristaps  318:        }
1.1       kristaps  319:
                    320:        while (buf[i] && isspace(buf[i]))
                    321:                i++;
                    322:
1.21      kristaps  323:        if ( ! mdoc_macro(mdoc, c, line, 1, &i, buf)) {
1.20      kristaps  324:                mdoc->flags |= MDOC_HALT;
                    325:                return(0);
                    326:        }
                    327:        return(1);
1.1       kristaps  328: }
                    329:
                    330:
                    331: void
1.31    ! kristaps  332: mdoc_vmsg(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
1.1       kristaps  333: {
1.31    ! kristaps  334:        char              buf[256];
1.23      kristaps  335:        va_list           ap;
1.1       kristaps  336:
                    337:        if (NULL == mdoc->cb.mdoc_msg)
                    338:                return;
                    339:
                    340:        va_start(ap, fmt);
1.31    ! kristaps  341:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
1.1       kristaps  342:        va_end(ap);
1.31    ! kristaps  343:        (*mdoc->cb.mdoc_msg)(mdoc->data, ln, pos, buf);
1.1       kristaps  344: }
                    345:
                    346:
                    347: int
1.31    ! kristaps  348: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
        !           349:                const char *fmt, ...)
1.1       kristaps  350: {
1.31    ! kristaps  351:        char             buf[256];
        !           352:        va_list          ap;
1.1       kristaps  353:
                    354:        if (NULL == mdoc->cb.mdoc_err)
                    355:                return(0);
1.31    ! kristaps  356:
        !           357:        va_start(ap, fmt);
        !           358:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
        !           359:        va_end(ap);
        !           360:        return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1       kristaps  361: }
                    362:
                    363:
                    364: int
1.31    ! kristaps  365: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos,
        !           366:                enum mdoc_warn type, const char *fmt, ...)
1.1       kristaps  367: {
1.31    ! kristaps  368:        char             buf[256];
        !           369:        va_list          ap;
1.1       kristaps  370:
                    371:        if (NULL == mdoc->cb.mdoc_warn)
                    372:                return(0);
1.31    ! kristaps  373:
        !           374:        va_start(ap, fmt);
        !           375:        (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
        !           376:        va_end(ap);
        !           377:        return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, type, buf));
1.1       kristaps  378: }
                    379:
                    380:
                    381: int
1.21      kristaps  382: mdoc_macro(struct mdoc *mdoc, int tok,
1.23      kristaps  383:                int ln, int ppos, int *pos, char *buf)
1.1       kristaps  384: {
                    385:
1.31    ! kristaps  386:        assert(mdoc_macros[tok].fp);
        !           387:
1.17      kristaps  388:        if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
1.13      kristaps  389:                        SEC_PROLOGUE == mdoc->sec_lastn)
1.31    ! kristaps  390:                return(mdoc_perr(mdoc, ln, ppos, "macro disallowed in document prologue"));
1.23      kristaps  391:        if (1 != ppos && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
1.31    ! kristaps  392:                return(mdoc_perr(mdoc, ln, ppos, "macro not callable"));
1.23      kristaps  393:        return((*mdoc_macros[tok].fp)(mdoc, tok, ln, ppos, pos, buf));
1.1       kristaps  394: }
                    395:
                    396:
1.23      kristaps  397: static int
                    398: mdoc_node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1       kristaps  399: {
1.30      kristaps  400:        const char       *nn, *nt, *on, *ot, *act;
1.1       kristaps  401:
1.25      kristaps  402:        assert(mdoc->last);
                    403:        assert(mdoc->first);
                    404:        assert(MDOC_ROOT != p->type);
1.1       kristaps  405:
1.27      kristaps  406:        if (MDOC_TEXT == mdoc->last->type)
                    407:                on = "<text>";
                    408:        else if (MDOC_ROOT == mdoc->last->type)
                    409:                on = "<root>";
                    410:        else
                    411:                on = mdoc_macronames[mdoc->last->tok];
                    412:
1.30      kristaps  413:        if (MDOC_TEXT == p->type)
                    414:                nn = "<text>";
                    415:        else if (MDOC_ROOT == p->type)
                    416:                nn = "<root>";
                    417:        else
                    418:                nn = mdoc_macronames[p->tok];
                    419:
                    420:        ot = mdoc_type2a(mdoc->last->type);
                    421:        nt = mdoc_type2a(p->type);
1.1       kristaps  422:
1.13      kristaps  423:        switch (mdoc->next) {
                    424:        case (MDOC_NEXT_SIBLING):
1.6       kristaps  425:                mdoc->last->next = p;
                    426:                p->prev = mdoc->last;
1.13      kristaps  427:                p->parent = mdoc->last->parent;
1.6       kristaps  428:                act = "sibling";
1.1       kristaps  429:                break;
1.13      kristaps  430:        case (MDOC_NEXT_CHILD):
                    431:                mdoc->last->child = p;
1.1       kristaps  432:                p->parent = mdoc->last;
                    433:                act = "child";
                    434:                break;
                    435:        default:
1.13      kristaps  436:                abort();
                    437:                /* NOTREACHED */
1.1       kristaps  438:        }
                    439:
1.23      kristaps  440:        if ( ! mdoc_valid_pre(mdoc, p))
                    441:                return(0);
                    442:        if ( ! mdoc_action_pre(mdoc, p))
                    443:                return(0);
1.27      kristaps  444:
                    445:        switch (p->type) {
                    446:        case (MDOC_HEAD):
                    447:                assert(MDOC_BLOCK == p->parent->type);
                    448:                p->parent->data.block.head = p;
                    449:                break;
                    450:        case (MDOC_TAIL):
                    451:                assert(MDOC_BLOCK == p->parent->type);
                    452:                p->parent->data.block.tail = p;
                    453:                break;
                    454:        case (MDOC_BODY):
                    455:                assert(MDOC_BLOCK == p->parent->type);
                    456:                p->parent->data.block.body = p;
                    457:                break;
                    458:        default:
                    459:                break;
                    460:        }
                    461:
1.1       kristaps  462:        mdoc->last = p;
1.30      kristaps  463:        mdoc_msg(mdoc, "parse: %s `%s' %s of %s `%s'",
                    464:                        nt, nn, act, ot, on);
1.23      kristaps  465:        return(1);
1.1       kristaps  466: }
                    467:
                    468:
1.23      kristaps  469: int
1.22      kristaps  470: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.17      kristaps  471: {
                    472:        struct mdoc_node *p;
                    473:
                    474:        assert(mdoc->first);
                    475:        assert(mdoc->last);
                    476:
                    477:        p = xcalloc(1, sizeof(struct mdoc_node));
                    478:
1.22      kristaps  479:        p->line = line;
                    480:        p->pos = pos;
1.17      kristaps  481:        p->type = MDOC_TAIL;
1.27      kristaps  482:        p->tok = tok;
1.17      kristaps  483:
1.23      kristaps  484:        return(mdoc_node_append(mdoc, p));
1.17      kristaps  485: }
                    486:
                    487:
1.23      kristaps  488: int
1.22      kristaps  489: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1       kristaps  490: {
                    491:        struct mdoc_node *p;
                    492:
                    493:        assert(mdoc->first);
                    494:        assert(mdoc->last);
                    495:
                    496:        p = xcalloc(1, sizeof(struct mdoc_node));
1.13      kristaps  497:
1.22      kristaps  498:        p->line = line;
                    499:        p->pos = pos;
1.1       kristaps  500:        p->type = MDOC_HEAD;
1.27      kristaps  501:        p->tok = tok;
1.1       kristaps  502:
1.23      kristaps  503:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  504: }
                    505:
                    506:
1.23      kristaps  507: int
1.22      kristaps  508: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1       kristaps  509: {
                    510:        struct mdoc_node *p;
                    511:
                    512:        assert(mdoc->first);
                    513:        assert(mdoc->last);
                    514:
                    515:        p = xcalloc(1, sizeof(struct mdoc_node));
                    516:
1.22      kristaps  517:        p->line = line;
                    518:        p->pos = pos;
1.1       kristaps  519:        p->type = MDOC_BODY;
1.27      kristaps  520:        p->tok = tok;
1.1       kristaps  521:
1.23      kristaps  522:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  523: }
                    524:
                    525:
1.23      kristaps  526: int
1.25      kristaps  527: mdoc_root_alloc(struct mdoc *mdoc)
                    528: {
                    529:        struct mdoc_node *p;
                    530:
                    531:        p = xcalloc(1, sizeof(struct mdoc_node));
                    532:
                    533:        p->type = MDOC_ROOT;
                    534:
                    535:        return(mdoc_node_append(mdoc, p));
                    536: }
                    537:
                    538:
                    539: int
1.22      kristaps  540: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
                    541:                int tok, size_t argsz, const struct mdoc_arg *args)
1.1       kristaps  542: {
                    543:        struct mdoc_node *p;
                    544:
                    545:        p = xcalloc(1, sizeof(struct mdoc_node));
                    546:
1.22      kristaps  547:        p->pos = pos;
                    548:        p->line = line;
1.1       kristaps  549:        p->type = MDOC_BLOCK;
1.27      kristaps  550:        p->tok = tok;
1.1       kristaps  551:        p->data.block.argc = argsz;
                    552:        p->data.block.argv = argdup(argsz, args);
                    553:
1.23      kristaps  554:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  555: }
                    556:
                    557:
1.23      kristaps  558: int
1.22      kristaps  559: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
                    560:                int tok, size_t argsz, const struct mdoc_arg *args)
1.1       kristaps  561: {
                    562:        struct mdoc_node *p;
                    563:
                    564:        p = xcalloc(1, sizeof(struct mdoc_node));
1.22      kristaps  565:
                    566:        p->line = line;
                    567:        p->pos = pos;
1.1       kristaps  568:        p->type = MDOC_ELEM;
1.27      kristaps  569:        p->tok = tok;
1.1       kristaps  570:        p->data.elem.argc = argsz;
                    571:        p->data.elem.argv = argdup(argsz, args);
                    572:
1.23      kristaps  573:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  574: }
                    575:
                    576:
1.23      kristaps  577: int
1.22      kristaps  578: mdoc_word_alloc(struct mdoc *mdoc,
                    579:                int line, int pos, const char *word)
1.1       kristaps  580: {
                    581:        struct mdoc_node *p;
                    582:
                    583:        p = xcalloc(1, sizeof(struct mdoc_node));
1.22      kristaps  584:        p->line = line;
                    585:        p->pos = pos;
1.1       kristaps  586:        p->type = MDOC_TEXT;
                    587:        p->data.text.string = xstrdup(word);
                    588:
1.23      kristaps  589:        return(mdoc_node_append(mdoc, p));
1.1       kristaps  590: }
                    591:
                    592:
                    593: static void
                    594: argfree(size_t sz, struct mdoc_arg *p)
                    595: {
1.2       kristaps  596:        int              i, j;
1.1       kristaps  597:
                    598:        if (0 == sz)
                    599:                return;
                    600:
                    601:        assert(p);
1.2       kristaps  602:        /* LINTED */
                    603:        for (i = 0; i < (int)sz; i++)
1.1       kristaps  604:                if (p[i].sz > 0) {
                    605:                        assert(p[i].value);
1.2       kristaps  606:                        /* LINTED */
                    607:                        for (j = 0; j < (int)p[i].sz; j++)
1.1       kristaps  608:                                free(p[i].value[j]);
1.19      kristaps  609:                        free(p[i].value);
1.1       kristaps  610:                }
                    611:        free(p);
                    612: }
                    613:
                    614:
                    615: static void
                    616: mdoc_elem_free(struct mdoc_elem *p)
                    617: {
                    618:
                    619:        argfree(p->argc, p->argv);
                    620: }
                    621:
                    622:
                    623: static void
                    624: mdoc_block_free(struct mdoc_block *p)
                    625: {
                    626:
                    627:        argfree(p->argc, p->argv);
                    628: }
                    629:
                    630:
                    631: static void
                    632: mdoc_text_free(struct mdoc_text *p)
                    633: {
                    634:
                    635:        if (p->string)
                    636:                free(p->string);
                    637: }
                    638:
                    639:
                    640: void
                    641: mdoc_node_free(struct mdoc_node *p)
                    642: {
                    643:
                    644:        switch (p->type) {
                    645:        case (MDOC_TEXT):
                    646:                mdoc_text_free(&p->data.text);
                    647:                break;
                    648:        case (MDOC_ELEM):
                    649:                mdoc_elem_free(&p->data.elem);
                    650:                break;
                    651:        case (MDOC_BLOCK):
                    652:                mdoc_block_free(&p->data.block);
                    653:                break;
                    654:        default:
                    655:                break;
                    656:        }
                    657:
                    658:        free(p);
                    659: }
                    660:
                    661:
                    662: static void
                    663: mdoc_node_freelist(struct mdoc_node *p)
                    664: {
                    665:
                    666:        if (p->child)
                    667:                mdoc_node_freelist(p->child);
                    668:        if (p->next)
                    669:                mdoc_node_freelist(p->next);
                    670:
                    671:        mdoc_node_free(p);
                    672: }
                    673:
                    674:
                    675: int
                    676: mdoc_find(const struct mdoc *mdoc, const char *key)
                    677: {
                    678:
1.4       kristaps  679:        return(mdoc_tokhash_find(mdoc->htab, key));
1.1       kristaps  680: }
                    681:
                    682:
                    683: static void
                    684: argcpy(struct mdoc_arg *dst, const struct mdoc_arg *src)
                    685: {
1.2       kristaps  686:        int              i;
1.1       kristaps  687:
1.26      kristaps  688:        dst->line = src->line;
                    689:        dst->pos = src->pos;
1.1       kristaps  690:        dst->arg = src->arg;
                    691:        if (0 == (dst->sz = src->sz))
                    692:                return;
                    693:        dst->value = xcalloc(dst->sz, sizeof(char *));
1.2       kristaps  694:        for (i = 0; i < (int)dst->sz; i++)
1.1       kristaps  695:                dst->value[i] = xstrdup(src->value[i]);
                    696: }
                    697:
                    698:
                    699: static struct mdoc_arg *
                    700: argdup(size_t argsz, const struct mdoc_arg *args)
                    701: {
                    702:        struct mdoc_arg *pp;
1.2       kristaps  703:        int              i;
1.1       kristaps  704:
                    705:        if (0 == argsz)
                    706:                return(NULL);
                    707:
                    708:        pp = xcalloc((size_t)argsz, sizeof(struct mdoc_arg));
1.2       kristaps  709:        for (i = 0; i < (int)argsz; i++)
1.1       kristaps  710:                argcpy(&pp[i], &args[i]);
                    711:
                    712:        return(pp);
                    713: }
                    714:

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