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Annotation of mandoc/mdoc_man.c, Revision 1.21

1.21    ! schwarze    1: /*     $Id: mdoc_man.c,v 1.20 2012/07/08 15:01:57 schwarze Exp $ */
1.1       schwarze    2: /*
1.11      schwarze    3:  * Copyright (c) 2011, 2012 Ingo Schwarze <schwarze@openbsd.org>
1.1       schwarze    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 above
                      7:  * copyright notice and this permission notice appear in all copies.
                      8:  *
                      9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     16:  */
1.7       kristaps   17: #ifdef HAVE_CONFIG_H
                     18: #include "config.h"
                     19: #endif
                     20:
1.12      schwarze   21: #include <assert.h>
1.1       schwarze   22: #include <stdio.h>
                     23: #include <string.h>
                     24:
                     25: #include "mandoc.h"
1.11      schwarze   26: #include "out.h"
1.4       kristaps   27: #include "man.h"
1.1       schwarze   28: #include "mdoc.h"
                     29: #include "main.h"
                     30:
1.5       kristaps   31: #define        DECL_ARGS const struct mdoc_meta *m, \
1.20      schwarze   32:                  const struct mdoc_node *n
1.1       schwarze   33:
                     34: struct manact {
1.5       kristaps   35:        int             (*cond)(DECL_ARGS); /* DON'T run actions */
                     36:        int             (*pre)(DECL_ARGS); /* pre-node action */
                     37:        void            (*post)(DECL_ARGS); /* post-node action */
                     38:        const char       *prefix; /* pre-node string constant */
                     39:        const char       *suffix; /* post-node string constant */
1.1       schwarze   40: };
                     41:
1.5       kristaps   42: static int       cond_body(DECL_ARGS);
1.1       schwarze   43: static int       cond_head(DECL_ARGS);
1.5       kristaps   44: static void      post_bd(DECL_ARGS);
1.13      schwarze   45: static void      post_bk(DECL_ARGS);
1.5       kristaps   46: static void      post_dl(DECL_ARGS);
1.1       schwarze   47: static void      post_enc(DECL_ARGS);
1.17      schwarze   48: static void      post_fa(DECL_ARGS);
1.16      schwarze   49: static void      post_fn(DECL_ARGS);
1.17      schwarze   50: static void      post_fo(DECL_ARGS);
1.15      schwarze   51: static void      post_in(DECL_ARGS);
1.14      schwarze   52: static void      post_lb(DECL_ARGS);
1.5       kristaps   53: static void      post_nm(DECL_ARGS);
1.1       schwarze   54: static void      post_percent(DECL_ARGS);
1.5       kristaps   55: static void      post_pf(DECL_ARGS);
1.3       schwarze   56: static void      post_sect(DECL_ARGS);
1.5       kristaps   57: static void      post_sp(DECL_ARGS);
1.18      schwarze   58: static void      post_vt(DECL_ARGS);
1.3       schwarze   59: static int       pre_ap(DECL_ARGS);
                     60: static int       pre_bd(DECL_ARGS);
1.13      schwarze   61: static int       pre_bk(DECL_ARGS);
1.3       schwarze   62: static int       pre_br(DECL_ARGS);
1.8       schwarze   63: static int       pre_bx(DECL_ARGS);
1.1       schwarze   64: static int       pre_dl(DECL_ARGS);
1.5       kristaps   65: static int       pre_enc(DECL_ARGS);
1.17      schwarze   66: static int       pre_fa(DECL_ARGS);
1.16      schwarze   67: static int       pre_fn(DECL_ARGS);
1.17      schwarze   68: static int       pre_fo(DECL_ARGS);
1.15      schwarze   69: static int       pre_in(DECL_ARGS);
1.1       schwarze   70: static int       pre_it(DECL_ARGS);
                     71: static int       pre_nm(DECL_ARGS);
                     72: static int       pre_ns(DECL_ARGS);
                     73: static int       pre_pp(DECL_ARGS);
1.12      schwarze   74: static int       pre_sm(DECL_ARGS);
1.3       schwarze   75: static int       pre_sp(DECL_ARGS);
1.5       kristaps   76: static int       pre_sect(DECL_ARGS);
1.18      schwarze   77: static int       pre_vt(DECL_ARGS);
1.8       schwarze   78: static int       pre_ux(DECL_ARGS);
1.1       schwarze   79: static int       pre_xr(DECL_ARGS);
1.20      schwarze   80: static void      print_word(const char *);
                     81: static void      print_offs(const char *);
1.5       kristaps   82: static void      print_node(DECL_ARGS);
1.1       schwarze   83:
1.3       schwarze   84: static const struct manact manacts[MDOC_MAX + 1] = {
                     85:        { NULL, pre_ap, NULL, NULL, NULL }, /* Ap */
                     86:        { NULL, NULL, NULL, NULL, NULL }, /* Dd */
                     87:        { NULL, NULL, NULL, NULL, NULL }, /* Dt */
1.8       schwarze   88:        { NULL, NULL, NULL, NULL, NULL }, /* Os */
1.3       schwarze   89:        { NULL, pre_sect, post_sect, ".SH", NULL }, /* Sh */
                     90:        { NULL, pre_sect, post_sect, ".SS", NULL }, /* Ss */
1.1       schwarze   91:        { NULL, pre_pp, NULL, NULL, NULL }, /* Pp */
1.3       schwarze   92:        { cond_body, pre_dl, post_dl, NULL, NULL }, /* D1 */
1.1       schwarze   93:        { cond_body, pre_dl, post_dl, NULL, NULL }, /* Dl */
1.3       schwarze   94:        { cond_body, pre_bd, post_bd, NULL, NULL }, /* Bd */
                     95:        { NULL, NULL, NULL, NULL, NULL }, /* Ed */
                     96:        { NULL, NULL, NULL, NULL, NULL }, /* Bl */
                     97:        { NULL, NULL, NULL, NULL, NULL }, /* El */
1.1       schwarze   98:        { NULL, pre_it, NULL, NULL, NULL }, /* _It */
1.9       schwarze   99:        { NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Ad */
1.1       schwarze  100:        { NULL, NULL, NULL, NULL, NULL }, /* _An */
                    101:        { NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Ar */
1.9       schwarze  102:        { NULL, pre_enc, post_enc, "\\fB", "\\fP" }, /* Cd */
1.1       schwarze  103:        { NULL, pre_enc, post_enc, "\\fB", "\\fP" }, /* Cm */
1.9       schwarze  104:        { NULL, pre_enc, post_enc, "\\fR", "\\fP" }, /* Dv */
                    105:        { NULL, pre_enc, post_enc, "\\fR", "\\fP" }, /* Er */
                    106:        { NULL, pre_enc, post_enc, "\\fR", "\\fP" }, /* Ev */
1.1       schwarze  107:        { NULL, pre_enc, post_enc, "The \\fB",
                    108:            "\\fP\nutility exits 0 on success, and >0 if an error occurs."
                    109:            }, /* Ex */
1.17      schwarze  110:        { NULL, pre_fa, post_fa, NULL, NULL }, /* Fa */
1.1       schwarze  111:        { NULL, NULL, NULL, NULL, NULL }, /* _Fd */
                    112:        { NULL, pre_enc, post_enc, "\\fB-", "\\fP" }, /* Fl */
1.16      schwarze  113:        { NULL, pre_fn, post_fn, NULL, NULL }, /* Fn */
                    114:        { NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Ft */
1.3       schwarze  115:        { NULL, pre_enc, post_enc, "\\fB", "\\fP" }, /* Ic */
1.15      schwarze  116:        { NULL, pre_in, post_in, NULL, NULL }, /* In */
1.9       schwarze  117:        { NULL, pre_enc, post_enc, "\\fR", "\\fP" }, /* Li */
1.1       schwarze  118:        { cond_head, pre_enc, NULL, "\\- ", NULL }, /* Nd */
                    119:        { NULL, pre_nm, post_nm, NULL, NULL }, /* Nm */
                    120:        { cond_body, pre_enc, post_enc, "[", "]" }, /* Op */
1.8       schwarze  121:        { NULL, NULL, NULL, NULL, NULL }, /* Ot */
                    122:        { NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Pa */
1.6       kristaps  123:        { NULL, pre_enc, post_enc, "The \\fB",
                    124:                "\\fP\nfunction returns the value 0 if successful;\n"
                    125:                "otherwise the value -1 is returned and the global\n"
                    126:                "variable \\fIerrno\\fP is set to indicate the error."
                    127:                }, /* Rv */
1.8       schwarze  128:        { NULL, NULL, NULL, NULL, NULL }, /* St */
1.19      schwarze  129:        { NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Va */
1.18      schwarze  130:        { NULL, pre_vt, post_vt, NULL, NULL }, /* Vt */
1.8       schwarze  131:        { NULL, pre_xr, NULL, NULL, NULL }, /* Xr */
1.1       schwarze  132:        { NULL, NULL, post_percent, NULL, NULL }, /* _%A */
                    133:        { NULL, NULL, NULL, NULL, NULL }, /* _%B */
                    134:        { NULL, NULL, post_percent, NULL, NULL }, /* _%D */
                    135:        { NULL, NULL, NULL, NULL, NULL }, /* _%I */
                    136:        { NULL, pre_enc, post_percent, "\\fI", "\\fP" }, /* %J */
                    137:        { NULL, NULL, NULL, NULL, NULL }, /* _%N */
                    138:        { NULL, NULL, NULL, NULL, NULL }, /* _%O */
                    139:        { NULL, NULL, NULL, NULL, NULL }, /* _%P */
                    140:        { NULL, NULL, NULL, NULL, NULL }, /* _%R */
                    141:        { NULL, pre_enc, post_percent, "\"", "\"" }, /* %T */
                    142:        { NULL, NULL, NULL, NULL, NULL }, /* _%V */
1.9       schwarze  143:        { NULL, NULL, NULL, NULL, NULL }, /* Ac */
                    144:        { cond_body, pre_enc, post_enc, "<", ">" }, /* Ao */
1.1       schwarze  145:        { cond_body, pre_enc, post_enc, "<", ">" }, /* Aq */
1.8       schwarze  146:        { NULL, NULL, NULL, NULL, NULL }, /* At */
1.3       schwarze  147:        { NULL, NULL, NULL, NULL, NULL }, /* Bc */
1.1       schwarze  148:        { NULL, NULL, NULL, NULL, NULL }, /* _Bf */
1.3       schwarze  149:        { cond_body, pre_enc, post_enc, "[", "]" }, /* Bo */
                    150:        { cond_body, pre_enc, post_enc, "[", "]" }, /* Bq */
1.8       schwarze  151:        { NULL, pre_ux, NULL, "BSD/OS", NULL }, /* Bsx */
                    152:        { NULL, pre_bx, NULL, NULL, NULL }, /* Bx */
                    153:        { NULL, NULL, NULL, NULL, NULL }, /* Db */
1.9       schwarze  154:        { NULL, NULL, NULL, NULL, NULL }, /* Dc */
                    155:        { cond_body, pre_enc, post_enc, "``", "''" }, /* Do */
1.1       schwarze  156:        { cond_body, pre_enc, post_enc, "``", "''" }, /* Dq */
                    157:        { NULL, NULL, NULL, NULL, NULL }, /* _Ec */
                    158:        { NULL, NULL, NULL, NULL, NULL }, /* _Ef */
1.3       schwarze  159:        { NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Em */
1.1       schwarze  160:        { NULL, NULL, NULL, NULL, NULL }, /* _Eo */
1.8       schwarze  161:        { NULL, pre_ux, NULL, "FreeBSD", NULL }, /* Fx */
1.9       schwarze  162:        { NULL, pre_enc, post_enc, "\\fB", "\\fP" }, /* Ms */
                    163:        { NULL, NULL, NULL, NULL, NULL }, /* No */
1.1       schwarze  164:        { NULL, pre_ns, NULL, NULL, NULL }, /* Ns */
1.8       schwarze  165:        { NULL, pre_ux, NULL, "NetBSD", NULL }, /* Nx */
                    166:        { NULL, pre_ux, NULL, "OpenBSD", NULL }, /* Ox */
1.3       schwarze  167:        { NULL, NULL, NULL, NULL, NULL }, /* Pc */
                    168:        { NULL, NULL, post_pf, NULL, NULL }, /* Pf */
                    169:        { cond_body, pre_enc, post_enc, "(", ")" }, /* Po */
                    170:        { cond_body, pre_enc, post_enc, "(", ")" }, /* Pq */
1.9       schwarze  171:        { NULL, NULL, NULL, NULL, NULL }, /* Qc */
1.1       schwarze  172:        { cond_body, pre_enc, post_enc, "`", "'" }, /* Ql */
1.9       schwarze  173:        { cond_body, pre_enc, post_enc, "\"", "\"" }, /* Qo */
                    174:        { cond_body, pre_enc, post_enc, "\"", "\"" }, /* Qq */
                    175:        { NULL, NULL, NULL, NULL, NULL }, /* Re */
1.1       schwarze  176:        { cond_body, pre_pp, NULL, NULL, NULL }, /* Rs */
1.9       schwarze  177:        { NULL, NULL, NULL, NULL, NULL }, /* Sc */
                    178:        { cond_body, pre_enc, post_enc, "`", "'" }, /* So */
1.1       schwarze  179:        { cond_body, pre_enc, post_enc, "`", "'" }, /* Sq */
1.12      schwarze  180:        { NULL, pre_sm, NULL, NULL, NULL }, /* Sm */
1.3       schwarze  181:        { NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Sx */
                    182:        { NULL, pre_enc, post_enc, "\\fB", "\\fP" }, /* Sy */
1.9       schwarze  183:        { NULL, pre_enc, post_enc, "\\fR", "\\fP" }, /* Tn */
1.8       schwarze  184:        { NULL, pre_ux, NULL, "UNIX", NULL }, /* Ux */
1.1       schwarze  185:        { NULL, NULL, NULL, NULL, NULL }, /* _Xc */
                    186:        { NULL, NULL, NULL, NULL, NULL }, /* _Xo */
1.17      schwarze  187:        { NULL, pre_fo, post_fo, NULL, NULL }, /* Fo */
                    188:        { NULL, NULL, NULL, NULL, NULL }, /* Fc */
1.3       schwarze  189:        { cond_body, pre_enc, post_enc, "[", "]" }, /* Oo */
1.9       schwarze  190:        { NULL, NULL, NULL, NULL, NULL }, /* Oc */
1.13      schwarze  191:        { NULL, pre_bk, post_bk, NULL, NULL }, /* Bk */
                    192:        { NULL, NULL, NULL, NULL, NULL }, /* Ek */
1.8       schwarze  193:        { NULL, pre_ux, NULL, "is currently in beta test.", NULL }, /* Bt */
                    194:        { NULL, NULL, NULL, NULL, NULL }, /* Hf */
                    195:        { NULL, NULL, NULL, NULL, NULL }, /* Fr */
                    196:        { NULL, pre_ux, NULL, "currently under development.", NULL }, /* Ud */
1.14      schwarze  197:        { NULL, NULL, post_lb, NULL, NULL }, /* Lb */
1.3       schwarze  198:        { NULL, pre_pp, NULL, NULL, NULL }, /* Lp */
1.1       schwarze  199:        { NULL, NULL, NULL, NULL, NULL }, /* _Lk */
                    200:        { NULL, NULL, NULL, NULL, NULL }, /* _Mt */
1.9       schwarze  201:        { cond_body, pre_enc, post_enc, "{", "}" }, /* Brq */
                    202:        { cond_body, pre_enc, post_enc, "{", "}" }, /* Bro */
                    203:        { NULL, NULL, NULL, NULL, NULL }, /* Brc */
1.1       schwarze  204:        { NULL, NULL, NULL, NULL, NULL }, /* _%C */
                    205:        { NULL, NULL, NULL, NULL, NULL }, /* _Es */
                    206:        { NULL, NULL, NULL, NULL, NULL }, /* _En */
1.8       schwarze  207:        { NULL, pre_ux, NULL, "DragonFly", NULL }, /* Dx */
1.1       schwarze  208:        { NULL, NULL, NULL, NULL, NULL }, /* _%Q */
1.3       schwarze  209:        { NULL, pre_br, NULL, NULL, NULL }, /* br */
                    210:        { NULL, pre_sp, post_sp, NULL, NULL }, /* sp */
1.1       schwarze  211:        { NULL, NULL, NULL, NULL, NULL }, /* _%U */
                    212:        { NULL, NULL, NULL, NULL, NULL }, /* _Ta */
1.3       schwarze  213:        { NULL, NULL, NULL, NULL, NULL }, /* ROOT */
1.1       schwarze  214: };
                    215:
1.20      schwarze  216: static int             outflags;
                    217: #define        MMAN_spc        (1 << 0)
                    218: #define        MMAN_nl         (1 << 1)
1.21    ! schwarze  219: #define        MMAN_br         (1 << 2)
        !           220: #define        MMAN_sp         (1 << 3)
        !           221: #define        MMAN_Sm         (1 << 4)
        !           222: #define        MMAN_Bk         (1 << 5)
1.20      schwarze  223:
1.1       schwarze  224: static void
1.20      schwarze  225: print_word(const char *s)
1.1       schwarze  226: {
1.5       kristaps  227:
1.21    ! schwarze  228:        if ((MMAN_sp | MMAN_br | MMAN_nl) & outflags) {
1.5       kristaps  229:                /*
                    230:                 * If we need a newline, print it now and start afresh.
                    231:                 */
1.21    ! schwarze  232:                if (MMAN_sp & outflags)
        !           233:                        printf("\n.sp\n");
        !           234:                else if (MMAN_br & outflags)
        !           235:                        printf("\n.br\n");
        !           236:                else if (MMAN_nl & outflags)
        !           237:                        putchar('\n');
        !           238:                outflags &= ~(MMAN_sp|MMAN_br|MMAN_nl|MMAN_spc);
1.20      schwarze  239:        } else if (MMAN_spc & outflags && '\0' != s[0])
1.5       kristaps  240:                /*
                    241:                 * If we need a space, only print it before
                    242:                 * (1) a nonzero length word;
                    243:                 * (2) a word that is non-punctuation; and
                    244:                 * (3) if punctuation, non-terminating puncutation.
                    245:                 */
1.13      schwarze  246:                if (NULL == strchr(".,:;)]?!", s[0]) || '\0' != s[1]) {
1.20      schwarze  247:                        if (MMAN_Bk & outflags) {
1.13      schwarze  248:                                putchar('\\');
                    249:                                putchar('~');
                    250:                        } else
                    251:                                putchar(' ');
                    252:                }
1.5       kristaps  253:
                    254:        /*
                    255:         * Reassign needing space if we're not following opening
                    256:         * punctuation.
                    257:         */
1.20      schwarze  258:        if (MMAN_Sm & outflags &&
                    259:            (('(' != s[0] && '[' != s[0]) || '\0' != s[1]))
                    260:                outflags |= MMAN_spc;
                    261:        else
                    262:                outflags &= ~MMAN_spc;
1.5       kristaps  263:
1.1       schwarze  264:        for ( ; *s; s++) {
                    265:                switch (*s) {
                    266:                case (ASCII_NBRSP):
                    267:                        printf("\\~");
                    268:                        break;
                    269:                case (ASCII_HYPH):
                    270:                        putchar('-');
                    271:                        break;
                    272:                default:
1.5       kristaps  273:                        putchar((unsigned char)*s);
1.1       schwarze  274:                        break;
                    275:                }
                    276:        }
1.4       kristaps  277: }
                    278:
1.11      schwarze  279: static void
1.20      schwarze  280: print_offs(const char *v)
1.11      schwarze  281: {
                    282:        char              buf[24];
                    283:        struct roffsu     su;
                    284:        size_t            sz;
                    285:
                    286:        if (NULL == v || '\0' == *v || 0 == strcmp(v, "left"))
                    287:                sz = 0;
                    288:        else if (0 == strcmp(v, "indent"))
                    289:                sz = 6;
                    290:        else if (0 == strcmp(v, "indent-two"))
                    291:                sz = 12;
                    292:        else if (a2roffsu(v, &su, SCALE_MAX)) {
1.20      schwarze  293:                print_word(v);
1.11      schwarze  294:                return;
                    295:        } else
                    296:                sz = strlen(v);
                    297:
                    298:        snprintf(buf, sizeof(buf), "%ldn", sz);
1.20      schwarze  299:        print_word(buf);
1.11      schwarze  300: }
                    301:
1.4       kristaps  302: void
                    303: man_man(void *arg, const struct man *man)
                    304: {
                    305:
1.5       kristaps  306:        /*
                    307:         * Dump the keep buffer.
                    308:         * We're guaranteed by now that this exists (is non-NULL).
                    309:         * Flush stdout afterward, just in case.
                    310:         */
1.4       kristaps  311:        fputs(mparse_getkeep(man_mparse(man)), stdout);
1.5       kristaps  312:        fflush(stdout);
1.1       schwarze  313: }
                    314:
                    315: void
                    316: man_mdoc(void *arg, const struct mdoc *mdoc)
                    317: {
                    318:        const struct mdoc_meta *m;
                    319:        const struct mdoc_node *n;
                    320:
                    321:        m = mdoc_meta(mdoc);
                    322:        n = mdoc_node(mdoc);
                    323:
1.3       schwarze  324:        printf(".TH \"%s\" \"%s\" \"%s\" \"%s\" \"%s\"",
1.5       kristaps  325:                        m->title, m->msec, m->date, m->os, m->vol);
1.1       schwarze  326:
1.20      schwarze  327:        outflags = MMAN_nl | MMAN_Sm;
                    328:        print_node(m, n);
1.3       schwarze  329:        putchar('\n');
1.1       schwarze  330: }
                    331:
                    332: static void
                    333: print_node(DECL_ARGS)
                    334: {
                    335:        const struct mdoc_node  *prev, *sub;
1.5       kristaps  336:        const struct manact     *act;
1.1       schwarze  337:        int                      cond, do_sub;
1.5       kristaps  338:
                    339:        /*
                    340:         * Break the line if we were parsed subsequent the current node.
                    341:         * This makes the page structure be more consistent.
                    342:         */
1.1       schwarze  343:        prev = n->prev ? n->prev : n->parent;
1.17      schwarze  344:        if (prev && prev->line < n->line &&
                    345:            MDOC_Fo != prev->tok && MDOC_Ns != prev->tok)
1.20      schwarze  346:                outflags |= MMAN_nl;
1.1       schwarze  347:
1.5       kristaps  348:        act = NULL;
1.1       schwarze  349:        cond = 0;
                    350:        do_sub = 1;
1.5       kristaps  351:
1.1       schwarze  352:        if (MDOC_TEXT == n->type) {
1.5       kristaps  353:                /*
                    354:                 * Make sure that we don't happen to start with a
                    355:                 * control character at the start of a line.
                    356:                 */
1.20      schwarze  357:                if (MMAN_nl & outflags && ('.' == *n->string ||
1.5       kristaps  358:                                        '\'' == *n->string)) {
1.20      schwarze  359:                        print_word("\\&");
                    360:                        outflags &= ~MMAN_spc;
1.3       schwarze  361:                }
1.20      schwarze  362:                print_word(n->string);
1.1       schwarze  363:        } else {
1.5       kristaps  364:                /*
                    365:                 * Conditionally run the pre-node action handler for a
                    366:                 * node.
                    367:                 */
1.1       schwarze  368:                act = manacts + n->tok;
1.20      schwarze  369:                cond = NULL == act->cond || (*act->cond)(m, n);
1.1       schwarze  370:                if (cond && act->pre)
1.20      schwarze  371:                        do_sub = (*act->pre)(m, n);
1.1       schwarze  372:        }
                    373:
1.5       kristaps  374:        /*
                    375:         * Conditionally run all child nodes.
                    376:         * Note that this iterates over children instead of using
                    377:         * recursion.  This prevents unnecessary depth in the stack.
                    378:         */
1.1       schwarze  379:        if (do_sub)
                    380:                for (sub = n->child; sub; sub = sub->next)
1.20      schwarze  381:                        print_node(m, sub);
1.1       schwarze  382:
1.5       kristaps  383:        /*
                    384:         * Lastly, conditionally run the post-node handler.
                    385:         */
1.1       schwarze  386:        if (cond && act->post)
1.20      schwarze  387:                (*act->post)(m, n);
1.1       schwarze  388: }
                    389:
                    390: static int
                    391: cond_head(DECL_ARGS)
                    392: {
1.5       kristaps  393:
1.1       schwarze  394:        return(MDOC_HEAD == n->type);
                    395: }
                    396:
                    397: static int
                    398: cond_body(DECL_ARGS)
                    399: {
1.5       kristaps  400:
1.1       schwarze  401:        return(MDOC_BODY == n->type);
                    402: }
                    403:
1.5       kristaps  404: /*
                    405:  * Output a font encoding before a node, e.g., \fR.
                    406:  * This obviously has no trailing space.
                    407:  */
1.1       schwarze  408: static int
                    409: pre_enc(DECL_ARGS)
                    410: {
1.5       kristaps  411:        const char      *prefix;
1.1       schwarze  412:
                    413:        prefix = manacts[n->tok].prefix;
                    414:        if (NULL == prefix)
                    415:                return(1);
1.20      schwarze  416:        print_word(prefix);
                    417:        outflags &= ~MMAN_spc;
1.1       schwarze  418:        return(1);
                    419: }
                    420:
1.5       kristaps  421: /*
                    422:  * Output a font encoding subsequent a node, e.g., \fP.
                    423:  */
1.1       schwarze  424: static void
                    425: post_enc(DECL_ARGS)
                    426: {
                    427:        const char *suffix;
                    428:
                    429:        suffix = manacts[n->tok].suffix;
                    430:        if (NULL == suffix)
                    431:                return;
1.20      schwarze  432:        outflags &= ~MMAN_spc;
                    433:        print_word(suffix);
1.10      schwarze  434:        if (MDOC_Fl == n->tok && 0 == n->nchild)
1.20      schwarze  435:                outflags &= ~MMAN_spc;
1.1       schwarze  436: }
                    437:
1.5       kristaps  438: /*
                    439:  * Used in listings (percent = %A, e.g.).
                    440:  * FIXME: this is incomplete.
                    441:  * It doesn't print a nice ", and" for lists.
                    442:  */
1.1       schwarze  443: static void
                    444: post_percent(DECL_ARGS)
                    445: {
                    446:
1.20      schwarze  447:        post_enc(m, n);
1.1       schwarze  448:        if (n->next)
1.20      schwarze  449:                print_word(",");
1.1       schwarze  450:        else {
1.20      schwarze  451:                print_word(".");
                    452:                outflags |= MMAN_nl;
1.1       schwarze  453:        }
                    454: }
                    455:
1.5       kristaps  456: /*
                    457:  * Print before a section header.
                    458:  */
1.1       schwarze  459: static int
1.3       schwarze  460: pre_sect(DECL_ARGS)
                    461: {
                    462:
                    463:        if (MDOC_HEAD != n->type)
                    464:                return(1);
1.20      schwarze  465:        outflags |= MMAN_nl;
                    466:        print_word(manacts[n->tok].prefix);
                    467:        print_word("\"");
                    468:        outflags &= ~MMAN_spc;
1.3       schwarze  469:        return(1);
                    470: }
                    471:
1.5       kristaps  472: /*
                    473:  * Print subsequent a section header.
                    474:  */
1.3       schwarze  475: static void
                    476: post_sect(DECL_ARGS)
                    477: {
                    478:
                    479:        if (MDOC_HEAD != n->type)
                    480:                return;
1.20      schwarze  481:        outflags &= ~MMAN_spc;
                    482:        print_word("\"");
                    483:        outflags |= MMAN_nl;
1.3       schwarze  484: }
                    485:
                    486: static int
                    487: pre_ap(DECL_ARGS)
                    488: {
                    489:
1.20      schwarze  490:        outflags &= ~MMAN_spc;
                    491:        print_word("'");
                    492:        outflags &= ~MMAN_spc;
1.3       schwarze  493:        return(0);
                    494: }
                    495:
                    496: static int
                    497: pre_bd(DECL_ARGS)
                    498: {
                    499:
1.21    ! schwarze  500:        if (0 == n->norm->Bd.comp)
        !           501:                outflags |= MMAN_sp;
1.3       schwarze  502:        if (DISP_unfilled == n->norm->Bd.type ||
                    503:            DISP_literal  == n->norm->Bd.type) {
1.20      schwarze  504:                outflags |= MMAN_nl;
                    505:                print_word(".nf");
1.3       schwarze  506:        }
1.20      schwarze  507:        outflags |= MMAN_nl;
                    508:        print_word(".RS");
                    509:        print_offs(n->norm->Bd.offs);
                    510:        outflags |= MMAN_nl;
1.3       schwarze  511:        return(1);
                    512: }
                    513:
                    514: static void
                    515: post_bd(DECL_ARGS)
                    516: {
                    517:
1.20      schwarze  518:        outflags |= MMAN_nl;
                    519:        print_word(".RE");
1.3       schwarze  520:        if (DISP_unfilled == n->norm->Bd.type ||
                    521:            DISP_literal  == n->norm->Bd.type) {
1.20      schwarze  522:                outflags |= MMAN_nl;
                    523:                print_word(".fi");
1.3       schwarze  524:        }
1.20      schwarze  525:        outflags |= MMAN_nl;
1.13      schwarze  526: }
                    527:
                    528: static int
                    529: pre_bk(DECL_ARGS)
                    530: {
                    531:
                    532:        switch (n->type) {
                    533:        case (MDOC_BLOCK):
                    534:                return(1);
                    535:        case (MDOC_BODY):
1.20      schwarze  536:                outflags |= MMAN_Bk;
1.13      schwarze  537:                return(1);
                    538:        default:
                    539:                return(0);
                    540:        }
                    541: }
                    542:
                    543: static void
                    544: post_bk(DECL_ARGS)
                    545: {
                    546:
                    547:        if (MDOC_BODY == n->type)
1.20      schwarze  548:                outflags &= ~MMAN_Bk;
1.3       schwarze  549: }
                    550:
                    551: static int
                    552: pre_br(DECL_ARGS)
                    553: {
                    554:
1.21    ! schwarze  555:        outflags |= MMAN_br;
1.3       schwarze  556:        return(0);
                    557: }
                    558:
                    559: static int
1.8       schwarze  560: pre_bx(DECL_ARGS)
                    561: {
                    562:
                    563:        n = n->child;
                    564:        if (n) {
1.20      schwarze  565:                print_word(n->string);
                    566:                outflags &= ~MMAN_spc;
1.8       schwarze  567:                n = n->next;
                    568:        }
1.20      schwarze  569:        print_word("BSD");
1.8       schwarze  570:        if (NULL == n)
                    571:                return(0);
1.20      schwarze  572:        outflags &= ~MMAN_spc;
                    573:        print_word("-");
                    574:        outflags &= ~MMAN_spc;
                    575:        print_word(n->string);
1.8       schwarze  576:        return(0);
                    577: }
                    578:
                    579: static int
1.1       schwarze  580: pre_dl(DECL_ARGS)
                    581: {
                    582:
1.20      schwarze  583:        outflags |= MMAN_nl;
                    584:        print_word(".RS 6n");
                    585:        outflags |= MMAN_nl;
1.1       schwarze  586:        return(1);
                    587: }
                    588:
                    589: static void
                    590: post_dl(DECL_ARGS)
                    591: {
                    592:
1.20      schwarze  593:        outflags |= MMAN_nl;
                    594:        print_word(".RE");
                    595:        outflags |= MMAN_nl;
1.16      schwarze  596: }
                    597:
                    598: static int
1.17      schwarze  599: pre_fa(DECL_ARGS)
                    600: {
                    601:
                    602:        if (MDOC_Fa == n->tok)
                    603:                n = n->child;
                    604:
                    605:        while (NULL != n) {
1.20      schwarze  606:                print_word("\\fI");
                    607:                outflags &= ~MMAN_spc;
                    608:                print_node(m, n);
                    609:                outflags &= ~MMAN_spc;
                    610:                print_word("\\fP");
1.17      schwarze  611:                if (NULL != (n = n->next))
1.20      schwarze  612:                        print_word(",");
1.17      schwarze  613:        }
                    614:        return(0);
                    615: }
                    616:
                    617: static void
                    618: post_fa(DECL_ARGS)
                    619: {
                    620:
                    621:        if (NULL != n->next && MDOC_Fa == n->next->tok)
1.20      schwarze  622:                print_word(",");
1.17      schwarze  623: }
                    624:
                    625: static int
1.16      schwarze  626: pre_fn(DECL_ARGS)
                    627: {
                    628:
                    629:        n = n->child;
                    630:        if (NULL == n)
                    631:                return(0);
                    632:
1.21    ! schwarze  633:        if (MDOC_SYNPRETTY & n->flags)
        !           634:                outflags |= MMAN_br;
1.20      schwarze  635:        print_word("\\fB");
                    636:        outflags &= ~MMAN_spc;
                    637:        print_node(m, n);
                    638:        outflags &= ~MMAN_spc;
                    639:        print_word("\\fP(");
                    640:        outflags &= ~MMAN_spc;
                    641:        return(pre_fa(m, n->next));
1.16      schwarze  642: }
                    643:
                    644: static void
                    645: post_fn(DECL_ARGS)
                    646: {
                    647:
1.20      schwarze  648:        print_word(")");
1.16      schwarze  649:        if (MDOC_SYNPRETTY & n->flags) {
1.20      schwarze  650:                print_word(";");
1.21    ! schwarze  651:                outflags |= MMAN_br;
1.17      schwarze  652:        }
                    653: }
                    654:
                    655: static int
                    656: pre_fo(DECL_ARGS)
                    657: {
                    658:
                    659:        switch (n->type) {
                    660:        case (MDOC_HEAD):
1.21    ! schwarze  661:                if (MDOC_SYNPRETTY & n->flags)
        !           662:                        outflags |= MMAN_br;
1.20      schwarze  663:                print_word("\\fB");
                    664:                outflags &= ~MMAN_spc;
1.17      schwarze  665:                break;
                    666:        case (MDOC_BODY):
1.20      schwarze  667:                outflags &= ~MMAN_spc;
                    668:                print_word("(");
                    669:                outflags &= ~MMAN_spc;
1.17      schwarze  670:                break;
                    671:        default:
                    672:                break;
                    673:        }
                    674:        return(1);
                    675: }
                    676:
                    677: static void
                    678: post_fo(DECL_ARGS)
                    679: {
                    680:
                    681:        switch (n->type) {
                    682:        case (MDOC_HEAD):
1.20      schwarze  683:                outflags &= ~MMAN_spc;
                    684:                print_word("\\fP");
1.17      schwarze  685:                break;
                    686:        case (MDOC_BODY):
1.20      schwarze  687:                post_fn(m, n);
1.17      schwarze  688:                break;
                    689:        default:
                    690:                break;
1.16      schwarze  691:        }
1.15      schwarze  692: }
                    693:
                    694: static int
                    695: pre_in(DECL_ARGS)
                    696: {
                    697:
                    698:        if (MDOC_SYNPRETTY & n->flags) {
1.21    ! schwarze  699:                outflags |= MMAN_br;
1.20      schwarze  700:                print_word("\\fB#include <");
1.15      schwarze  701:        } else
1.20      schwarze  702:                print_word("<\\fI");
                    703:        outflags &= ~MMAN_spc;
1.15      schwarze  704:        return(1);
                    705: }
                    706:
                    707: static void
                    708: post_in(DECL_ARGS)
                    709: {
                    710:
1.20      schwarze  711:        outflags &= ~MMAN_spc;
1.15      schwarze  712:        if (MDOC_SYNPRETTY & n->flags) {
1.20      schwarze  713:                print_word(">\\fP");
1.21    ! schwarze  714:                outflags |= MMAN_br;
1.15      schwarze  715:        } else
1.20      schwarze  716:                print_word("\\fP>");
1.1       schwarze  717: }
                    718:
                    719: static int
                    720: pre_it(DECL_ARGS)
                    721: {
                    722:        const struct mdoc_node *bln;
                    723:
                    724:        if (MDOC_HEAD == n->type) {
1.20      schwarze  725:                outflags |= MMAN_nl;
                    726:                print_word(".TP");
1.1       schwarze  727:                bln = n->parent->parent->prev;
1.3       schwarze  728:                switch (bln->norm->Bl.type) {
                    729:                case (LIST_bullet):
1.20      schwarze  730:                        print_word("4n");
                    731:                        outflags |= MMAN_nl;
                    732:                        print_word("\\fBo\\fP");
1.3       schwarze  733:                        break;
                    734:                default:
                    735:                        if (bln->norm->Bl.width)
1.20      schwarze  736:                                print_word(bln->norm->Bl.width);
1.3       schwarze  737:                        break;
                    738:                }
1.20      schwarze  739:                outflags |= MMAN_nl;
1.1       schwarze  740:        }
                    741:        return(1);
1.14      schwarze  742: }
                    743:
                    744: static void
                    745: post_lb(DECL_ARGS)
                    746: {
                    747:
1.21    ! schwarze  748:        if (SEC_LIBRARY == n->sec)
        !           749:                outflags |= MMAN_br;
1.1       schwarze  750: }
                    751:
                    752: static int
                    753: pre_nm(DECL_ARGS)
                    754: {
                    755:
                    756:        if (MDOC_ELEM != n->type && MDOC_HEAD != n->type)
                    757:                return(1);
1.21    ! schwarze  758:        if (MDOC_SYNPRETTY & n->flags)
        !           759:                outflags |= MMAN_br;
1.20      schwarze  760:        print_word("\\fB");
                    761:        outflags &= ~MMAN_spc;
1.1       schwarze  762:        if (NULL == n->child)
1.20      schwarze  763:                print_word(m->name);
1.1       schwarze  764:        return(1);
                    765: }
                    766:
                    767: static void
                    768: post_nm(DECL_ARGS)
                    769: {
                    770:
                    771:        if (MDOC_ELEM != n->type && MDOC_HEAD != n->type)
                    772:                return;
1.20      schwarze  773:        outflags &= ~MMAN_spc;
                    774:        print_word("\\fP");
1.1       schwarze  775: }
                    776:
                    777: static int
                    778: pre_ns(DECL_ARGS)
                    779: {
                    780:
1.20      schwarze  781:        outflags &= ~MMAN_spc;
1.1       schwarze  782:        return(0);
                    783: }
                    784:
1.3       schwarze  785: static void
                    786: post_pf(DECL_ARGS)
                    787: {
                    788:
1.20      schwarze  789:        outflags &= ~MMAN_spc;
1.3       schwarze  790: }
                    791:
1.1       schwarze  792: static int
                    793: pre_pp(DECL_ARGS)
                    794: {
                    795:
1.20      schwarze  796:        outflags |= MMAN_nl;
1.1       schwarze  797:        if (MDOC_It == n->parent->tok)
1.20      schwarze  798:                print_word(".sp");
1.1       schwarze  799:        else
1.20      schwarze  800:                print_word(".PP");
                    801:        outflags |= MMAN_nl;
1.10      schwarze  802:        return(MDOC_Rs == n->tok);
1.12      schwarze  803: }
                    804:
                    805: static int
                    806: pre_sm(DECL_ARGS)
                    807: {
                    808:
                    809:        assert(n->child && MDOC_TEXT == n->child->type);
                    810:        if (0 == strcmp("on", n->child->string))
1.20      schwarze  811:                outflags |= MMAN_Sm;
1.12      schwarze  812:        else
1.20      schwarze  813:                outflags &= ~MMAN_Sm;
1.12      schwarze  814:        return(0);
1.1       schwarze  815: }
                    816:
                    817: static int
1.3       schwarze  818: pre_sp(DECL_ARGS)
1.1       schwarze  819: {
                    820:
1.20      schwarze  821:        outflags |= MMAN_nl;
                    822:        print_word(".sp");
1.1       schwarze  823:        return(1);
                    824: }
                    825:
                    826: static void
1.3       schwarze  827: post_sp(DECL_ARGS)
1.1       schwarze  828: {
                    829:
1.20      schwarze  830:        outflags |= MMAN_nl;
1.18      schwarze  831: }
                    832:
                    833: static int
                    834: pre_vt(DECL_ARGS)
                    835: {
                    836:
                    837:        if (MDOC_SYNPRETTY & n->flags) {
                    838:                switch (n->type) {
                    839:                case (MDOC_BLOCK):
                    840:                        return(1);
                    841:                case (MDOC_BODY):
                    842:                        break;
                    843:                default:
                    844:                        return(0);
                    845:                }
1.21    ! schwarze  846:                outflags |= MMAN_br;
1.18      schwarze  847:        }
1.20      schwarze  848:        print_word("\\fI");
                    849:        outflags &= ~MMAN_spc;
1.18      schwarze  850:        return(1);
                    851: }
                    852:
                    853: static void
                    854: post_vt(DECL_ARGS)
                    855: {
                    856:
1.19      schwarze  857:        if (MDOC_SYNPRETTY & n->flags && MDOC_BODY != n->type)
1.18      schwarze  858:                return;
                    859:
1.20      schwarze  860:        outflags &= ~MMAN_spc;
                    861:        print_word("\\fP");
1.21    ! schwarze  862:        if (MDOC_SYNPRETTY & n->flags)
        !           863:                outflags |= MMAN_br;
1.1       schwarze  864: }
                    865:
                    866: static int
                    867: pre_xr(DECL_ARGS)
                    868: {
                    869:
                    870:        n = n->child;
                    871:        if (NULL == n)
                    872:                return(0);
1.20      schwarze  873:        print_node(m, n);
1.1       schwarze  874:        n = n->next;
                    875:        if (NULL == n)
                    876:                return(0);
1.20      schwarze  877:        outflags &= ~MMAN_spc;
                    878:        print_word("(");
                    879:        print_node(m, n);
                    880:        print_word(")");
1.1       schwarze  881:        return(0);
1.8       schwarze  882: }
                    883:
                    884: static int
                    885: pre_ux(DECL_ARGS)
                    886: {
                    887:
1.20      schwarze  888:        print_word(manacts[n->tok].prefix);
1.8       schwarze  889:        if (NULL == n->child)
                    890:                return(0);
1.20      schwarze  891:        outflags &= ~MMAN_spc;
                    892:        print_word("\\~");
                    893:        outflags &= ~MMAN_spc;
1.8       schwarze  894:        return(1);
1.1       schwarze  895: }

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