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Annotation of mandoc/mdoc_man.c, Revision 1.22

1.22    ! schwarze    1: /*     $Id: mdoc_man.c,v 1.21 2012/07/08 15:48:13 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);
1.22    ! schwarze   59: static int       pre_an(DECL_ARGS);
1.3       schwarze   60: static int       pre_ap(DECL_ARGS);
                     61: static int       pre_bd(DECL_ARGS);
1.13      schwarze   62: static int       pre_bk(DECL_ARGS);
1.3       schwarze   63: static int       pre_br(DECL_ARGS);
1.8       schwarze   64: static int       pre_bx(DECL_ARGS);
1.1       schwarze   65: static int       pre_dl(DECL_ARGS);
1.5       kristaps   66: static int       pre_enc(DECL_ARGS);
1.17      schwarze   67: static int       pre_fa(DECL_ARGS);
1.16      schwarze   68: static int       pre_fn(DECL_ARGS);
1.17      schwarze   69: static int       pre_fo(DECL_ARGS);
1.15      schwarze   70: static int       pre_in(DECL_ARGS);
1.1       schwarze   71: static int       pre_it(DECL_ARGS);
                     72: static int       pre_nm(DECL_ARGS);
                     73: static int       pre_ns(DECL_ARGS);
                     74: static int       pre_pp(DECL_ARGS);
1.12      schwarze   75: static int       pre_sm(DECL_ARGS);
1.3       schwarze   76: static int       pre_sp(DECL_ARGS);
1.5       kristaps   77: static int       pre_sect(DECL_ARGS);
1.18      schwarze   78: static int       pre_vt(DECL_ARGS);
1.8       schwarze   79: static int       pre_ux(DECL_ARGS);
1.1       schwarze   80: static int       pre_xr(DECL_ARGS);
1.20      schwarze   81: static void      print_word(const char *);
                     82: static void      print_offs(const char *);
1.5       kristaps   83: static void      print_node(DECL_ARGS);
1.1       schwarze   84:
1.3       schwarze   85: static const struct manact manacts[MDOC_MAX + 1] = {
                     86:        { NULL, pre_ap, NULL, NULL, NULL }, /* Ap */
                     87:        { NULL, NULL, NULL, NULL, NULL }, /* Dd */
                     88:        { NULL, NULL, NULL, NULL, NULL }, /* Dt */
1.8       schwarze   89:        { NULL, NULL, NULL, NULL, NULL }, /* Os */
1.3       schwarze   90:        { NULL, pre_sect, post_sect, ".SH", NULL }, /* Sh */
                     91:        { NULL, pre_sect, post_sect, ".SS", NULL }, /* Ss */
1.1       schwarze   92:        { NULL, pre_pp, NULL, NULL, NULL }, /* Pp */
1.3       schwarze   93:        { cond_body, pre_dl, post_dl, NULL, NULL }, /* D1 */
1.1       schwarze   94:        { cond_body, pre_dl, post_dl, NULL, NULL }, /* Dl */
1.3       schwarze   95:        { cond_body, pre_bd, post_bd, NULL, NULL }, /* Bd */
                     96:        { NULL, NULL, NULL, NULL, NULL }, /* Ed */
                     97:        { NULL, NULL, NULL, NULL, NULL }, /* Bl */
                     98:        { NULL, NULL, NULL, NULL, NULL }, /* El */
1.1       schwarze   99:        { NULL, pre_it, NULL, NULL, NULL }, /* _It */
1.9       schwarze  100:        { NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Ad */
1.22    ! schwarze  101:        { NULL, pre_an, NULL, NULL, NULL }, /* An */
1.1       schwarze  102:        { NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Ar */
1.9       schwarze  103:        { NULL, pre_enc, post_enc, "\\fB", "\\fP" }, /* Cd */
1.1       schwarze  104:        { NULL, pre_enc, post_enc, "\\fB", "\\fP" }, /* Cm */
1.9       schwarze  105:        { NULL, pre_enc, post_enc, "\\fR", "\\fP" }, /* Dv */
                    106:        { NULL, pre_enc, post_enc, "\\fR", "\\fP" }, /* Er */
                    107:        { NULL, pre_enc, post_enc, "\\fR", "\\fP" }, /* Ev */
1.1       schwarze  108:        { NULL, pre_enc, post_enc, "The \\fB",
                    109:            "\\fP\nutility exits 0 on success, and >0 if an error occurs."
                    110:            }, /* Ex */
1.17      schwarze  111:        { NULL, pre_fa, post_fa, NULL, NULL }, /* Fa */
1.1       schwarze  112:        { NULL, NULL, NULL, NULL, NULL }, /* _Fd */
                    113:        { NULL, pre_enc, post_enc, "\\fB-", "\\fP" }, /* Fl */
1.16      schwarze  114:        { NULL, pre_fn, post_fn, NULL, NULL }, /* Fn */
                    115:        { NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Ft */
1.3       schwarze  116:        { NULL, pre_enc, post_enc, "\\fB", "\\fP" }, /* Ic */
1.15      schwarze  117:        { NULL, pre_in, post_in, NULL, NULL }, /* In */
1.9       schwarze  118:        { NULL, pre_enc, post_enc, "\\fR", "\\fP" }, /* Li */
1.1       schwarze  119:        { cond_head, pre_enc, NULL, "\\- ", NULL }, /* Nd */
                    120:        { NULL, pre_nm, post_nm, NULL, NULL }, /* Nm */
                    121:        { cond_body, pre_enc, post_enc, "[", "]" }, /* Op */
1.8       schwarze  122:        { NULL, NULL, NULL, NULL, NULL }, /* Ot */
                    123:        { NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Pa */
1.6       kristaps  124:        { NULL, pre_enc, post_enc, "The \\fB",
                    125:                "\\fP\nfunction returns the value 0 if successful;\n"
                    126:                "otherwise the value -1 is returned and the global\n"
                    127:                "variable \\fIerrno\\fP is set to indicate the error."
                    128:                }, /* Rv */
1.8       schwarze  129:        { NULL, NULL, NULL, NULL, NULL }, /* St */
1.19      schwarze  130:        { NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Va */
1.18      schwarze  131:        { NULL, pre_vt, post_vt, NULL, NULL }, /* Vt */
1.8       schwarze  132:        { NULL, pre_xr, NULL, NULL, NULL }, /* Xr */
1.1       schwarze  133:        { NULL, NULL, post_percent, NULL, NULL }, /* _%A */
                    134:        { NULL, NULL, NULL, NULL, NULL }, /* _%B */
                    135:        { NULL, NULL, post_percent, NULL, NULL }, /* _%D */
                    136:        { NULL, NULL, NULL, NULL, NULL }, /* _%I */
                    137:        { NULL, pre_enc, post_percent, "\\fI", "\\fP" }, /* %J */
                    138:        { NULL, NULL, NULL, NULL, NULL }, /* _%N */
                    139:        { NULL, NULL, NULL, NULL, NULL }, /* _%O */
                    140:        { NULL, NULL, NULL, NULL, NULL }, /* _%P */
                    141:        { NULL, NULL, NULL, NULL, NULL }, /* _%R */
                    142:        { NULL, pre_enc, post_percent, "\"", "\"" }, /* %T */
                    143:        { NULL, NULL, NULL, NULL, NULL }, /* _%V */
1.9       schwarze  144:        { NULL, NULL, NULL, NULL, NULL }, /* Ac */
                    145:        { cond_body, pre_enc, post_enc, "<", ">" }, /* Ao */
1.1       schwarze  146:        { cond_body, pre_enc, post_enc, "<", ">" }, /* Aq */
1.8       schwarze  147:        { NULL, NULL, NULL, NULL, NULL }, /* At */
1.3       schwarze  148:        { NULL, NULL, NULL, NULL, NULL }, /* Bc */
1.1       schwarze  149:        { NULL, NULL, NULL, NULL, NULL }, /* _Bf */
1.3       schwarze  150:        { cond_body, pre_enc, post_enc, "[", "]" }, /* Bo */
                    151:        { cond_body, pre_enc, post_enc, "[", "]" }, /* Bq */
1.8       schwarze  152:        { NULL, pre_ux, NULL, "BSD/OS", NULL }, /* Bsx */
                    153:        { NULL, pre_bx, NULL, NULL, NULL }, /* Bx */
                    154:        { NULL, NULL, NULL, NULL, NULL }, /* Db */
1.9       schwarze  155:        { NULL, NULL, NULL, NULL, NULL }, /* Dc */
                    156:        { cond_body, pre_enc, post_enc, "``", "''" }, /* Do */
1.1       schwarze  157:        { cond_body, pre_enc, post_enc, "``", "''" }, /* Dq */
                    158:        { NULL, NULL, NULL, NULL, NULL }, /* _Ec */
                    159:        { NULL, NULL, NULL, NULL, NULL }, /* _Ef */
1.3       schwarze  160:        { NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Em */
1.1       schwarze  161:        { NULL, NULL, NULL, NULL, NULL }, /* _Eo */
1.8       schwarze  162:        { NULL, pre_ux, NULL, "FreeBSD", NULL }, /* Fx */
1.9       schwarze  163:        { NULL, pre_enc, post_enc, "\\fB", "\\fP" }, /* Ms */
                    164:        { NULL, NULL, NULL, NULL, NULL }, /* No */
1.1       schwarze  165:        { NULL, pre_ns, NULL, NULL, NULL }, /* Ns */
1.8       schwarze  166:        { NULL, pre_ux, NULL, "NetBSD", NULL }, /* Nx */
                    167:        { NULL, pre_ux, NULL, "OpenBSD", NULL }, /* Ox */
1.3       schwarze  168:        { NULL, NULL, NULL, NULL, NULL }, /* Pc */
                    169:        { NULL, NULL, post_pf, NULL, NULL }, /* Pf */
                    170:        { cond_body, pre_enc, post_enc, "(", ")" }, /* Po */
                    171:        { cond_body, pre_enc, post_enc, "(", ")" }, /* Pq */
1.9       schwarze  172:        { NULL, NULL, NULL, NULL, NULL }, /* Qc */
1.1       schwarze  173:        { cond_body, pre_enc, post_enc, "`", "'" }, /* Ql */
1.9       schwarze  174:        { cond_body, pre_enc, post_enc, "\"", "\"" }, /* Qo */
                    175:        { cond_body, pre_enc, post_enc, "\"", "\"" }, /* Qq */
                    176:        { NULL, NULL, NULL, NULL, NULL }, /* Re */
1.1       schwarze  177:        { cond_body, pre_pp, NULL, NULL, NULL }, /* Rs */
1.9       schwarze  178:        { NULL, NULL, NULL, NULL, NULL }, /* Sc */
                    179:        { cond_body, pre_enc, post_enc, "`", "'" }, /* So */
1.1       schwarze  180:        { cond_body, pre_enc, post_enc, "`", "'" }, /* Sq */
1.12      schwarze  181:        { NULL, pre_sm, NULL, NULL, NULL }, /* Sm */
1.3       schwarze  182:        { NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Sx */
                    183:        { NULL, pre_enc, post_enc, "\\fB", "\\fP" }, /* Sy */
1.9       schwarze  184:        { NULL, pre_enc, post_enc, "\\fR", "\\fP" }, /* Tn */
1.8       schwarze  185:        { NULL, pre_ux, NULL, "UNIX", NULL }, /* Ux */
1.1       schwarze  186:        { NULL, NULL, NULL, NULL, NULL }, /* _Xc */
                    187:        { NULL, NULL, NULL, NULL, NULL }, /* _Xo */
1.17      schwarze  188:        { NULL, pre_fo, post_fo, NULL, NULL }, /* Fo */
                    189:        { NULL, NULL, NULL, NULL, NULL }, /* Fc */
1.3       schwarze  190:        { cond_body, pre_enc, post_enc, "[", "]" }, /* Oo */
1.9       schwarze  191:        { NULL, NULL, NULL, NULL, NULL }, /* Oc */
1.13      schwarze  192:        { NULL, pre_bk, post_bk, NULL, NULL }, /* Bk */
                    193:        { NULL, NULL, NULL, NULL, NULL }, /* Ek */
1.8       schwarze  194:        { NULL, pre_ux, NULL, "is currently in beta test.", NULL }, /* Bt */
                    195:        { NULL, NULL, NULL, NULL, NULL }, /* Hf */
                    196:        { NULL, NULL, NULL, NULL, NULL }, /* Fr */
                    197:        { NULL, pre_ux, NULL, "currently under development.", NULL }, /* Ud */
1.14      schwarze  198:        { NULL, NULL, post_lb, NULL, NULL }, /* Lb */
1.3       schwarze  199:        { NULL, pre_pp, NULL, NULL, NULL }, /* Lp */
1.1       schwarze  200:        { NULL, NULL, NULL, NULL, NULL }, /* _Lk */
                    201:        { NULL, NULL, NULL, NULL, NULL }, /* _Mt */
1.9       schwarze  202:        { cond_body, pre_enc, post_enc, "{", "}" }, /* Brq */
                    203:        { cond_body, pre_enc, post_enc, "{", "}" }, /* Bro */
                    204:        { NULL, NULL, NULL, NULL, NULL }, /* Brc */
1.1       schwarze  205:        { NULL, NULL, NULL, NULL, NULL }, /* _%C */
                    206:        { NULL, NULL, NULL, NULL, NULL }, /* _Es */
                    207:        { NULL, NULL, NULL, NULL, NULL }, /* _En */
1.8       schwarze  208:        { NULL, pre_ux, NULL, "DragonFly", NULL }, /* Dx */
1.1       schwarze  209:        { NULL, NULL, NULL, NULL, NULL }, /* _%Q */
1.3       schwarze  210:        { NULL, pre_br, NULL, NULL, NULL }, /* br */
                    211:        { NULL, pre_sp, post_sp, NULL, NULL }, /* sp */
1.1       schwarze  212:        { NULL, NULL, NULL, NULL, NULL }, /* _%U */
                    213:        { NULL, NULL, NULL, NULL, NULL }, /* _Ta */
1.3       schwarze  214:        { NULL, NULL, NULL, NULL, NULL }, /* ROOT */
1.1       schwarze  215: };
                    216:
1.20      schwarze  217: static int             outflags;
                    218: #define        MMAN_spc        (1 << 0)
                    219: #define        MMAN_nl         (1 << 1)
1.21      schwarze  220: #define        MMAN_br         (1 << 2)
                    221: #define        MMAN_sp         (1 << 3)
                    222: #define        MMAN_Sm         (1 << 4)
                    223: #define        MMAN_Bk         (1 << 5)
1.22    ! schwarze  224: #define        MMAN_An_split   (1 << 6)
        !           225: #define        MMAN_An_nosplit (1 << 7)
1.20      schwarze  226:
1.1       schwarze  227: static void
1.20      schwarze  228: print_word(const char *s)
1.1       schwarze  229: {
1.5       kristaps  230:
1.21      schwarze  231:        if ((MMAN_sp | MMAN_br | MMAN_nl) & outflags) {
1.5       kristaps  232:                /*
                    233:                 * If we need a newline, print it now and start afresh.
                    234:                 */
1.21      schwarze  235:                if (MMAN_sp & outflags)
                    236:                        printf("\n.sp\n");
                    237:                else if (MMAN_br & outflags)
                    238:                        printf("\n.br\n");
                    239:                else if (MMAN_nl & outflags)
                    240:                        putchar('\n');
                    241:                outflags &= ~(MMAN_sp|MMAN_br|MMAN_nl|MMAN_spc);
1.20      schwarze  242:        } else if (MMAN_spc & outflags && '\0' != s[0])
1.5       kristaps  243:                /*
                    244:                 * If we need a space, only print it before
                    245:                 * (1) a nonzero length word;
                    246:                 * (2) a word that is non-punctuation; and
                    247:                 * (3) if punctuation, non-terminating puncutation.
                    248:                 */
1.13      schwarze  249:                if (NULL == strchr(".,:;)]?!", s[0]) || '\0' != s[1]) {
1.20      schwarze  250:                        if (MMAN_Bk & outflags) {
1.13      schwarze  251:                                putchar('\\');
                    252:                                putchar('~');
                    253:                        } else
                    254:                                putchar(' ');
                    255:                }
1.5       kristaps  256:
                    257:        /*
                    258:         * Reassign needing space if we're not following opening
                    259:         * punctuation.
                    260:         */
1.20      schwarze  261:        if (MMAN_Sm & outflags &&
                    262:            (('(' != s[0] && '[' != s[0]) || '\0' != s[1]))
                    263:                outflags |= MMAN_spc;
                    264:        else
                    265:                outflags &= ~MMAN_spc;
1.5       kristaps  266:
1.1       schwarze  267:        for ( ; *s; s++) {
                    268:                switch (*s) {
                    269:                case (ASCII_NBRSP):
                    270:                        printf("\\~");
                    271:                        break;
                    272:                case (ASCII_HYPH):
                    273:                        putchar('-');
                    274:                        break;
                    275:                default:
1.5       kristaps  276:                        putchar((unsigned char)*s);
1.1       schwarze  277:                        break;
                    278:                }
                    279:        }
1.4       kristaps  280: }
                    281:
1.11      schwarze  282: static void
1.20      schwarze  283: print_offs(const char *v)
1.11      schwarze  284: {
                    285:        char              buf[24];
                    286:        struct roffsu     su;
                    287:        size_t            sz;
                    288:
                    289:        if (NULL == v || '\0' == *v || 0 == strcmp(v, "left"))
                    290:                sz = 0;
                    291:        else if (0 == strcmp(v, "indent"))
                    292:                sz = 6;
                    293:        else if (0 == strcmp(v, "indent-two"))
                    294:                sz = 12;
                    295:        else if (a2roffsu(v, &su, SCALE_MAX)) {
1.20      schwarze  296:                print_word(v);
1.11      schwarze  297:                return;
                    298:        } else
                    299:                sz = strlen(v);
                    300:
                    301:        snprintf(buf, sizeof(buf), "%ldn", sz);
1.20      schwarze  302:        print_word(buf);
1.11      schwarze  303: }
                    304:
1.4       kristaps  305: void
                    306: man_man(void *arg, const struct man *man)
                    307: {
                    308:
1.5       kristaps  309:        /*
                    310:         * Dump the keep buffer.
                    311:         * We're guaranteed by now that this exists (is non-NULL).
                    312:         * Flush stdout afterward, just in case.
                    313:         */
1.4       kristaps  314:        fputs(mparse_getkeep(man_mparse(man)), stdout);
1.5       kristaps  315:        fflush(stdout);
1.1       schwarze  316: }
                    317:
                    318: void
                    319: man_mdoc(void *arg, const struct mdoc *mdoc)
                    320: {
                    321:        const struct mdoc_meta *m;
                    322:        const struct mdoc_node *n;
                    323:
                    324:        m = mdoc_meta(mdoc);
                    325:        n = mdoc_node(mdoc);
                    326:
1.3       schwarze  327:        printf(".TH \"%s\" \"%s\" \"%s\" \"%s\" \"%s\"",
1.5       kristaps  328:                        m->title, m->msec, m->date, m->os, m->vol);
1.1       schwarze  329:
1.20      schwarze  330:        outflags = MMAN_nl | MMAN_Sm;
                    331:        print_node(m, n);
1.3       schwarze  332:        putchar('\n');
1.1       schwarze  333: }
                    334:
                    335: static void
                    336: print_node(DECL_ARGS)
                    337: {
                    338:        const struct mdoc_node  *prev, *sub;
1.5       kristaps  339:        const struct manact     *act;
1.1       schwarze  340:        int                      cond, do_sub;
1.5       kristaps  341:
                    342:        /*
                    343:         * Break the line if we were parsed subsequent the current node.
                    344:         * This makes the page structure be more consistent.
                    345:         */
1.1       schwarze  346:        prev = n->prev ? n->prev : n->parent;
1.17      schwarze  347:        if (prev && prev->line < n->line &&
                    348:            MDOC_Fo != prev->tok && MDOC_Ns != prev->tok)
1.20      schwarze  349:                outflags |= MMAN_nl;
1.1       schwarze  350:
1.5       kristaps  351:        act = NULL;
1.1       schwarze  352:        cond = 0;
                    353:        do_sub = 1;
1.5       kristaps  354:
1.1       schwarze  355:        if (MDOC_TEXT == n->type) {
1.5       kristaps  356:                /*
                    357:                 * Make sure that we don't happen to start with a
                    358:                 * control character at the start of a line.
                    359:                 */
1.20      schwarze  360:                if (MMAN_nl & outflags && ('.' == *n->string ||
1.5       kristaps  361:                                        '\'' == *n->string)) {
1.20      schwarze  362:                        print_word("\\&");
                    363:                        outflags &= ~MMAN_spc;
1.3       schwarze  364:                }
1.20      schwarze  365:                print_word(n->string);
1.1       schwarze  366:        } else {
1.5       kristaps  367:                /*
                    368:                 * Conditionally run the pre-node action handler for a
                    369:                 * node.
                    370:                 */
1.1       schwarze  371:                act = manacts + n->tok;
1.20      schwarze  372:                cond = NULL == act->cond || (*act->cond)(m, n);
1.1       schwarze  373:                if (cond && act->pre)
1.20      schwarze  374:                        do_sub = (*act->pre)(m, n);
1.1       schwarze  375:        }
                    376:
1.5       kristaps  377:        /*
                    378:         * Conditionally run all child nodes.
                    379:         * Note that this iterates over children instead of using
                    380:         * recursion.  This prevents unnecessary depth in the stack.
                    381:         */
1.1       schwarze  382:        if (do_sub)
                    383:                for (sub = n->child; sub; sub = sub->next)
1.20      schwarze  384:                        print_node(m, sub);
1.1       schwarze  385:
1.5       kristaps  386:        /*
                    387:         * Lastly, conditionally run the post-node handler.
                    388:         */
1.1       schwarze  389:        if (cond && act->post)
1.20      schwarze  390:                (*act->post)(m, n);
1.1       schwarze  391: }
                    392:
                    393: static int
                    394: cond_head(DECL_ARGS)
                    395: {
1.5       kristaps  396:
1.1       schwarze  397:        return(MDOC_HEAD == n->type);
                    398: }
                    399:
                    400: static int
                    401: cond_body(DECL_ARGS)
                    402: {
1.5       kristaps  403:
1.1       schwarze  404:        return(MDOC_BODY == n->type);
                    405: }
                    406:
1.5       kristaps  407: /*
                    408:  * Output a font encoding before a node, e.g., \fR.
                    409:  * This obviously has no trailing space.
                    410:  */
1.1       schwarze  411: static int
                    412: pre_enc(DECL_ARGS)
                    413: {
1.5       kristaps  414:        const char      *prefix;
1.1       schwarze  415:
                    416:        prefix = manacts[n->tok].prefix;
                    417:        if (NULL == prefix)
                    418:                return(1);
1.20      schwarze  419:        print_word(prefix);
                    420:        outflags &= ~MMAN_spc;
1.1       schwarze  421:        return(1);
                    422: }
                    423:
1.5       kristaps  424: /*
                    425:  * Output a font encoding subsequent a node, e.g., \fP.
                    426:  */
1.1       schwarze  427: static void
                    428: post_enc(DECL_ARGS)
                    429: {
                    430:        const char *suffix;
                    431:
                    432:        suffix = manacts[n->tok].suffix;
                    433:        if (NULL == suffix)
                    434:                return;
1.20      schwarze  435:        outflags &= ~MMAN_spc;
                    436:        print_word(suffix);
1.10      schwarze  437:        if (MDOC_Fl == n->tok && 0 == n->nchild)
1.20      schwarze  438:                outflags &= ~MMAN_spc;
1.1       schwarze  439: }
                    440:
1.5       kristaps  441: /*
                    442:  * Used in listings (percent = %A, e.g.).
                    443:  * FIXME: this is incomplete.
                    444:  * It doesn't print a nice ", and" for lists.
                    445:  */
1.1       schwarze  446: static void
                    447: post_percent(DECL_ARGS)
                    448: {
                    449:
1.20      schwarze  450:        post_enc(m, n);
1.1       schwarze  451:        if (n->next)
1.20      schwarze  452:                print_word(",");
1.1       schwarze  453:        else {
1.20      schwarze  454:                print_word(".");
                    455:                outflags |= MMAN_nl;
1.1       schwarze  456:        }
                    457: }
                    458:
1.5       kristaps  459: /*
                    460:  * Print before a section header.
                    461:  */
1.1       schwarze  462: static int
1.3       schwarze  463: pre_sect(DECL_ARGS)
                    464: {
                    465:
                    466:        if (MDOC_HEAD != n->type)
                    467:                return(1);
1.20      schwarze  468:        outflags |= MMAN_nl;
                    469:        print_word(manacts[n->tok].prefix);
                    470:        print_word("\"");
                    471:        outflags &= ~MMAN_spc;
1.3       schwarze  472:        return(1);
                    473: }
                    474:
1.5       kristaps  475: /*
                    476:  * Print subsequent a section header.
                    477:  */
1.3       schwarze  478: static void
                    479: post_sect(DECL_ARGS)
                    480: {
                    481:
                    482:        if (MDOC_HEAD != n->type)
                    483:                return;
1.20      schwarze  484:        outflags &= ~MMAN_spc;
                    485:        print_word("\"");
                    486:        outflags |= MMAN_nl;
1.22    ! schwarze  487:        if (MDOC_Sh == n->tok && SEC_AUTHORS == n->sec)
        !           488:                outflags &= ~(MMAN_An_split | MMAN_An_nosplit);
        !           489: }
        !           490:
        !           491: static int
        !           492: pre_an(DECL_ARGS)
        !           493: {
        !           494:
        !           495:        switch (n->norm->An.auth) {
        !           496:        case (AUTH_split):
        !           497:                outflags &= ~MMAN_An_nosplit;
        !           498:                outflags |= MMAN_An_split;
        !           499:                return(0);
        !           500:        case (AUTH_nosplit):
        !           501:                outflags &= ~MMAN_An_split;
        !           502:                outflags |= MMAN_An_nosplit;
        !           503:                return(0);
        !           504:        default:
        !           505:                if (MMAN_An_split & outflags)
        !           506:                        outflags |= MMAN_br;
        !           507:                else if (SEC_AUTHORS == n->sec &&
        !           508:                    ! (MMAN_An_nosplit & outflags))
        !           509:                        outflags |= MMAN_An_split;
        !           510:                return(1);
        !           511:        }
1.3       schwarze  512: }
                    513:
                    514: static int
                    515: pre_ap(DECL_ARGS)
                    516: {
                    517:
1.20      schwarze  518:        outflags &= ~MMAN_spc;
                    519:        print_word("'");
                    520:        outflags &= ~MMAN_spc;
1.3       schwarze  521:        return(0);
                    522: }
                    523:
                    524: static int
                    525: pre_bd(DECL_ARGS)
                    526: {
                    527:
1.21      schwarze  528:        if (0 == n->norm->Bd.comp)
                    529:                outflags |= MMAN_sp;
1.3       schwarze  530:        if (DISP_unfilled == n->norm->Bd.type ||
                    531:            DISP_literal  == n->norm->Bd.type) {
1.20      schwarze  532:                outflags |= MMAN_nl;
                    533:                print_word(".nf");
1.3       schwarze  534:        }
1.20      schwarze  535:        outflags |= MMAN_nl;
                    536:        print_word(".RS");
                    537:        print_offs(n->norm->Bd.offs);
                    538:        outflags |= MMAN_nl;
1.3       schwarze  539:        return(1);
                    540: }
                    541:
                    542: static void
                    543: post_bd(DECL_ARGS)
                    544: {
                    545:
1.20      schwarze  546:        outflags |= MMAN_nl;
                    547:        print_word(".RE");
1.3       schwarze  548:        if (DISP_unfilled == n->norm->Bd.type ||
                    549:            DISP_literal  == n->norm->Bd.type) {
1.20      schwarze  550:                outflags |= MMAN_nl;
                    551:                print_word(".fi");
1.3       schwarze  552:        }
1.20      schwarze  553:        outflags |= MMAN_nl;
1.13      schwarze  554: }
                    555:
                    556: static int
                    557: pre_bk(DECL_ARGS)
                    558: {
                    559:
                    560:        switch (n->type) {
                    561:        case (MDOC_BLOCK):
                    562:                return(1);
                    563:        case (MDOC_BODY):
1.20      schwarze  564:                outflags |= MMAN_Bk;
1.13      schwarze  565:                return(1);
                    566:        default:
                    567:                return(0);
                    568:        }
                    569: }
                    570:
                    571: static void
                    572: post_bk(DECL_ARGS)
                    573: {
                    574:
                    575:        if (MDOC_BODY == n->type)
1.20      schwarze  576:                outflags &= ~MMAN_Bk;
1.3       schwarze  577: }
                    578:
                    579: static int
                    580: pre_br(DECL_ARGS)
                    581: {
                    582:
1.21      schwarze  583:        outflags |= MMAN_br;
1.3       schwarze  584:        return(0);
                    585: }
                    586:
                    587: static int
1.8       schwarze  588: pre_bx(DECL_ARGS)
                    589: {
                    590:
                    591:        n = n->child;
                    592:        if (n) {
1.20      schwarze  593:                print_word(n->string);
                    594:                outflags &= ~MMAN_spc;
1.8       schwarze  595:                n = n->next;
                    596:        }
1.20      schwarze  597:        print_word("BSD");
1.8       schwarze  598:        if (NULL == n)
                    599:                return(0);
1.20      schwarze  600:        outflags &= ~MMAN_spc;
                    601:        print_word("-");
                    602:        outflags &= ~MMAN_spc;
                    603:        print_word(n->string);
1.8       schwarze  604:        return(0);
                    605: }
                    606:
                    607: static int
1.1       schwarze  608: pre_dl(DECL_ARGS)
                    609: {
                    610:
1.20      schwarze  611:        outflags |= MMAN_nl;
                    612:        print_word(".RS 6n");
                    613:        outflags |= MMAN_nl;
1.1       schwarze  614:        return(1);
                    615: }
                    616:
                    617: static void
                    618: post_dl(DECL_ARGS)
                    619: {
                    620:
1.20      schwarze  621:        outflags |= MMAN_nl;
                    622:        print_word(".RE");
                    623:        outflags |= MMAN_nl;
1.16      schwarze  624: }
                    625:
                    626: static int
1.17      schwarze  627: pre_fa(DECL_ARGS)
                    628: {
                    629:
                    630:        if (MDOC_Fa == n->tok)
                    631:                n = n->child;
                    632:
                    633:        while (NULL != n) {
1.20      schwarze  634:                print_word("\\fI");
                    635:                outflags &= ~MMAN_spc;
                    636:                print_node(m, n);
                    637:                outflags &= ~MMAN_spc;
                    638:                print_word("\\fP");
1.17      schwarze  639:                if (NULL != (n = n->next))
1.20      schwarze  640:                        print_word(",");
1.17      schwarze  641:        }
                    642:        return(0);
                    643: }
                    644:
                    645: static void
                    646: post_fa(DECL_ARGS)
                    647: {
                    648:
                    649:        if (NULL != n->next && MDOC_Fa == n->next->tok)
1.20      schwarze  650:                print_word(",");
1.17      schwarze  651: }
                    652:
                    653: static int
1.16      schwarze  654: pre_fn(DECL_ARGS)
                    655: {
                    656:
                    657:        n = n->child;
                    658:        if (NULL == n)
                    659:                return(0);
                    660:
1.21      schwarze  661:        if (MDOC_SYNPRETTY & n->flags)
                    662:                outflags |= MMAN_br;
1.20      schwarze  663:        print_word("\\fB");
                    664:        outflags &= ~MMAN_spc;
                    665:        print_node(m, n);
                    666:        outflags &= ~MMAN_spc;
                    667:        print_word("\\fP(");
                    668:        outflags &= ~MMAN_spc;
                    669:        return(pre_fa(m, n->next));
1.16      schwarze  670: }
                    671:
                    672: static void
                    673: post_fn(DECL_ARGS)
                    674: {
                    675:
1.20      schwarze  676:        print_word(")");
1.16      schwarze  677:        if (MDOC_SYNPRETTY & n->flags) {
1.20      schwarze  678:                print_word(";");
1.21      schwarze  679:                outflags |= MMAN_br;
1.17      schwarze  680:        }
                    681: }
                    682:
                    683: static int
                    684: pre_fo(DECL_ARGS)
                    685: {
                    686:
                    687:        switch (n->type) {
                    688:        case (MDOC_HEAD):
1.21      schwarze  689:                if (MDOC_SYNPRETTY & n->flags)
                    690:                        outflags |= MMAN_br;
1.20      schwarze  691:                print_word("\\fB");
                    692:                outflags &= ~MMAN_spc;
1.17      schwarze  693:                break;
                    694:        case (MDOC_BODY):
1.20      schwarze  695:                outflags &= ~MMAN_spc;
                    696:                print_word("(");
                    697:                outflags &= ~MMAN_spc;
1.17      schwarze  698:                break;
                    699:        default:
                    700:                break;
                    701:        }
                    702:        return(1);
                    703: }
                    704:
                    705: static void
                    706: post_fo(DECL_ARGS)
                    707: {
                    708:
                    709:        switch (n->type) {
                    710:        case (MDOC_HEAD):
1.20      schwarze  711:                outflags &= ~MMAN_spc;
                    712:                print_word("\\fP");
1.17      schwarze  713:                break;
                    714:        case (MDOC_BODY):
1.20      schwarze  715:                post_fn(m, n);
1.17      schwarze  716:                break;
                    717:        default:
                    718:                break;
1.16      schwarze  719:        }
1.15      schwarze  720: }
                    721:
                    722: static int
                    723: pre_in(DECL_ARGS)
                    724: {
                    725:
                    726:        if (MDOC_SYNPRETTY & n->flags) {
1.21      schwarze  727:                outflags |= MMAN_br;
1.20      schwarze  728:                print_word("\\fB#include <");
1.15      schwarze  729:        } else
1.20      schwarze  730:                print_word("<\\fI");
                    731:        outflags &= ~MMAN_spc;
1.15      schwarze  732:        return(1);
                    733: }
                    734:
                    735: static void
                    736: post_in(DECL_ARGS)
                    737: {
                    738:
1.20      schwarze  739:        outflags &= ~MMAN_spc;
1.15      schwarze  740:        if (MDOC_SYNPRETTY & n->flags) {
1.20      schwarze  741:                print_word(">\\fP");
1.21      schwarze  742:                outflags |= MMAN_br;
1.15      schwarze  743:        } else
1.20      schwarze  744:                print_word("\\fP>");
1.1       schwarze  745: }
                    746:
                    747: static int
                    748: pre_it(DECL_ARGS)
                    749: {
                    750:        const struct mdoc_node *bln;
                    751:
                    752:        if (MDOC_HEAD == n->type) {
1.20      schwarze  753:                outflags |= MMAN_nl;
                    754:                print_word(".TP");
1.1       schwarze  755:                bln = n->parent->parent->prev;
1.3       schwarze  756:                switch (bln->norm->Bl.type) {
                    757:                case (LIST_bullet):
1.20      schwarze  758:                        print_word("4n");
                    759:                        outflags |= MMAN_nl;
                    760:                        print_word("\\fBo\\fP");
1.3       schwarze  761:                        break;
                    762:                default:
                    763:                        if (bln->norm->Bl.width)
1.20      schwarze  764:                                print_word(bln->norm->Bl.width);
1.3       schwarze  765:                        break;
                    766:                }
1.20      schwarze  767:                outflags |= MMAN_nl;
1.1       schwarze  768:        }
                    769:        return(1);
1.14      schwarze  770: }
                    771:
                    772: static void
                    773: post_lb(DECL_ARGS)
                    774: {
                    775:
1.21      schwarze  776:        if (SEC_LIBRARY == n->sec)
                    777:                outflags |= MMAN_br;
1.1       schwarze  778: }
                    779:
                    780: static int
                    781: pre_nm(DECL_ARGS)
                    782: {
                    783:
                    784:        if (MDOC_ELEM != n->type && MDOC_HEAD != n->type)
                    785:                return(1);
1.21      schwarze  786:        if (MDOC_SYNPRETTY & n->flags)
                    787:                outflags |= MMAN_br;
1.20      schwarze  788:        print_word("\\fB");
                    789:        outflags &= ~MMAN_spc;
1.1       schwarze  790:        if (NULL == n->child)
1.20      schwarze  791:                print_word(m->name);
1.1       schwarze  792:        return(1);
                    793: }
                    794:
                    795: static void
                    796: post_nm(DECL_ARGS)
                    797: {
                    798:
                    799:        if (MDOC_ELEM != n->type && MDOC_HEAD != n->type)
                    800:                return;
1.20      schwarze  801:        outflags &= ~MMAN_spc;
                    802:        print_word("\\fP");
1.1       schwarze  803: }
                    804:
                    805: static int
                    806: pre_ns(DECL_ARGS)
                    807: {
                    808:
1.20      schwarze  809:        outflags &= ~MMAN_spc;
1.1       schwarze  810:        return(0);
                    811: }
                    812:
1.3       schwarze  813: static void
                    814: post_pf(DECL_ARGS)
                    815: {
                    816:
1.20      schwarze  817:        outflags &= ~MMAN_spc;
1.3       schwarze  818: }
                    819:
1.1       schwarze  820: static int
                    821: pre_pp(DECL_ARGS)
                    822: {
                    823:
1.20      schwarze  824:        outflags |= MMAN_nl;
1.1       schwarze  825:        if (MDOC_It == n->parent->tok)
1.20      schwarze  826:                print_word(".sp");
1.1       schwarze  827:        else
1.20      schwarze  828:                print_word(".PP");
                    829:        outflags |= MMAN_nl;
1.10      schwarze  830:        return(MDOC_Rs == n->tok);
1.12      schwarze  831: }
                    832:
                    833: static int
                    834: pre_sm(DECL_ARGS)
                    835: {
                    836:
                    837:        assert(n->child && MDOC_TEXT == n->child->type);
                    838:        if (0 == strcmp("on", n->child->string))
1.20      schwarze  839:                outflags |= MMAN_Sm;
1.12      schwarze  840:        else
1.20      schwarze  841:                outflags &= ~MMAN_Sm;
1.12      schwarze  842:        return(0);
1.1       schwarze  843: }
                    844:
                    845: static int
1.3       schwarze  846: pre_sp(DECL_ARGS)
1.1       schwarze  847: {
                    848:
1.20      schwarze  849:        outflags |= MMAN_nl;
                    850:        print_word(".sp");
1.1       schwarze  851:        return(1);
                    852: }
                    853:
                    854: static void
1.3       schwarze  855: post_sp(DECL_ARGS)
1.1       schwarze  856: {
                    857:
1.20      schwarze  858:        outflags |= MMAN_nl;
1.18      schwarze  859: }
                    860:
                    861: static int
                    862: pre_vt(DECL_ARGS)
                    863: {
                    864:
                    865:        if (MDOC_SYNPRETTY & n->flags) {
                    866:                switch (n->type) {
                    867:                case (MDOC_BLOCK):
                    868:                        return(1);
                    869:                case (MDOC_BODY):
                    870:                        break;
                    871:                default:
                    872:                        return(0);
                    873:                }
1.21      schwarze  874:                outflags |= MMAN_br;
1.18      schwarze  875:        }
1.20      schwarze  876:        print_word("\\fI");
                    877:        outflags &= ~MMAN_spc;
1.18      schwarze  878:        return(1);
                    879: }
                    880:
                    881: static void
                    882: post_vt(DECL_ARGS)
                    883: {
                    884:
1.19      schwarze  885:        if (MDOC_SYNPRETTY & n->flags && MDOC_BODY != n->type)
1.18      schwarze  886:                return;
                    887:
1.20      schwarze  888:        outflags &= ~MMAN_spc;
                    889:        print_word("\\fP");
1.21      schwarze  890:        if (MDOC_SYNPRETTY & n->flags)
                    891:                outflags |= MMAN_br;
1.1       schwarze  892: }
                    893:
                    894: static int
                    895: pre_xr(DECL_ARGS)
                    896: {
                    897:
                    898:        n = n->child;
                    899:        if (NULL == n)
                    900:                return(0);
1.20      schwarze  901:        print_node(m, n);
1.1       schwarze  902:        n = n->next;
                    903:        if (NULL == n)
                    904:                return(0);
1.20      schwarze  905:        outflags &= ~MMAN_spc;
                    906:        print_word("(");
                    907:        print_node(m, n);
                    908:        print_word(")");
1.1       schwarze  909:        return(0);
1.8       schwarze  910: }
                    911:
                    912: static int
                    913: pre_ux(DECL_ARGS)
                    914: {
                    915:
1.20      schwarze  916:        print_word(manacts[n->tok].prefix);
1.8       schwarze  917:        if (NULL == n->child)
                    918:                return(0);
1.20      schwarze  919:        outflags &= ~MMAN_spc;
                    920:        print_word("\\~");
                    921:        outflags &= ~MMAN_spc;
1.8       schwarze  922:        return(1);
1.1       schwarze  923: }

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