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Annotation of mandoc/man_term.c, Revision 1.111

1.111   ! kristaps    1: /*     $Id: man_term.c,v 1.110 2011/06/18 17:36:52 kristaps Exp $ */
1.1       kristaps    2: /*
1.98      schwarze    3:  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.94      schwarze    4:  * Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
1.1       kristaps    5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
1.8       kristaps    7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
1.1       kristaps    9:  *
1.8       kristaps   10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     15:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     16:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1       kristaps   17:  */
1.55      kristaps   18: #ifdef HAVE_CONFIG_H
                     19: #include "config.h"
                     20: #endif
                     21:
1.28      kristaps   22: #include <sys/types.h>
                     23:
1.1       kristaps   24: #include <assert.h>
1.18      kristaps   25: #include <ctype.h>
1.1       kristaps   26: #include <stdio.h>
                     27: #include <stdlib.h>
                     28: #include <string.h>
                     29:
1.71      kristaps   30: #include "mandoc.h"
1.40      kristaps   31: #include "out.h"
1.36      kristaps   32: #include "man.h"
1.1       kristaps   33: #include "term.h"
1.36      kristaps   34: #include "main.h"
1.1       kristaps   35:
1.18      kristaps   36: #define        INDENT            7
                     37: #define        HALFINDENT        3
                     38:
1.44      kristaps   39: /* FIXME: have PD set the default vspace width. */
                     40:
1.24      kristaps   41: struct mtermp {
                     42:        int               fl;
1.19      kristaps   43: #define        MANT_LITERAL     (1 << 0)
1.26      kristaps   44:        /*
                     45:         * Default amount to indent the left margin after leading text
                     46:         * has been printed (e.g., `HP' left-indent, `TP' and `IP' body
                     47:         * indent).  This needs to be saved because `HP' and so on, if
                     48:         * not having a specified value, must default.
                     49:         *
                     50:         * Note that this is the indentation AFTER the left offset, so
                     51:         * the total offset is usually offset + lmargin.
                     52:         */
                     53:        size_t            lmargin;
                     54:        /*
                     55:         * The default offset, i.e., the amount between any text and the
                     56:         * page boundary.
                     57:         */
                     58:        size_t            offset;
1.24      kristaps   59: };
1.19      kristaps   60:
1.1       kristaps   61: #define        DECL_ARGS         struct termp *p, \
1.24      kristaps   62:                          struct mtermp *mt, \
1.1       kristaps   63:                          const struct man_node *n, \
                     64:                          const struct man_meta *m
                     65:
                     66: struct termact {
                     67:        int             (*pre)(DECL_ARGS);
                     68:        void            (*post)(DECL_ARGS);
1.56      kristaps   69:        int               flags;
                     70: #define        MAN_NOTEXT       (1 << 0) /* Never has text children. */
1.1       kristaps   71: };
                     72:
1.77      kristaps   73: static int               a2width(const struct termp *, const char *);
                     74: static size_t            a2height(const struct termp *, const char *);
1.39      kristaps   75:
1.52      kristaps   76: static void              print_man_nodelist(DECL_ARGS);
1.45      kristaps   77: static void              print_man_node(DECL_ARGS);
1.74      kristaps   78: static void              print_man_head(struct termp *, const void *);
1.73      kristaps   79: static void              print_man_foot(struct termp *, const void *);
1.39      kristaps   80: static void              print_bvspace(struct termp *,
                     81:                                const struct man_node *);
                     82:
1.88      kristaps   83: static int               pre_alternate(DECL_ARGS);
1.1       kristaps   84: static int               pre_B(DECL_ARGS);
1.19      kristaps   85: static int               pre_HP(DECL_ARGS);
1.1       kristaps   86: static int               pre_I(DECL_ARGS);
1.4       kristaps   87: static int               pre_IP(DECL_ARGS);
1.1       kristaps   88: static int               pre_PP(DECL_ARGS);
1.26      kristaps   89: static int               pre_RS(DECL_ARGS);
1.1       kristaps   90: static int               pre_SH(DECL_ARGS);
                     91: static int               pre_SS(DECL_ARGS);
                     92: static int               pre_TP(DECL_ARGS);
1.29      kristaps   93: static int               pre_ign(DECL_ARGS);
1.83      kristaps   94: static int               pre_in(DECL_ARGS);
1.84      kristaps   95: static int               pre_literal(DECL_ARGS);
1.19      kristaps   96: static int               pre_sp(DECL_ARGS);
1.89      kristaps   97: static int               pre_ft(DECL_ARGS);
1.1       kristaps   98:
1.22      kristaps   99: static void              post_IP(DECL_ARGS);
1.20      kristaps  100: static void              post_HP(DECL_ARGS);
1.26      kristaps  101: static void              post_RS(DECL_ARGS);
1.1       kristaps  102: static void              post_SH(DECL_ARGS);
                    103: static void              post_SS(DECL_ARGS);
1.21      kristaps  104: static void              post_TP(DECL_ARGS);
1.1       kristaps  105:
1.32      kristaps  106: static const struct termact termacts[MAN_MAX] = {
1.82      kristaps  107:        { pre_sp, NULL, MAN_NOTEXT }, /* br */
1.56      kristaps  108:        { NULL, NULL, 0 }, /* TH */
                    109:        { pre_SH, post_SH, 0 }, /* SH */
                    110:        { pre_SS, post_SS, 0 }, /* SS */
                    111:        { pre_TP, post_TP, 0 }, /* TP */
                    112:        { pre_PP, NULL, 0 }, /* LP */
                    113:        { pre_PP, NULL, 0 }, /* PP */
                    114:        { pre_PP, NULL, 0 }, /* P */
                    115:        { pre_IP, post_IP, 0 }, /* IP */
                    116:        { pre_HP, post_HP, 0 }, /* HP */
                    117:        { NULL, NULL, 0 }, /* SM */
                    118:        { pre_B, NULL, 0 }, /* SB */
1.88      kristaps  119:        { pre_alternate, NULL, 0 }, /* BI */
                    120:        { pre_alternate, NULL, 0 }, /* IB */
                    121:        { pre_alternate, NULL, 0 }, /* BR */
                    122:        { pre_alternate, NULL, 0 }, /* RB */
1.56      kristaps  123:        { NULL, NULL, 0 }, /* R */
                    124:        { pre_B, NULL, 0 }, /* B */
                    125:        { pre_I, NULL, 0 }, /* I */
1.88      kristaps  126:        { pre_alternate, NULL, 0 }, /* IR */
                    127:        { pre_alternate, NULL, 0 }, /* RI */
1.99      schwarze  128:        { pre_ign, NULL, MAN_NOTEXT }, /* na */
1.56      kristaps  129:        { pre_sp, NULL, MAN_NOTEXT }, /* sp */
1.84      kristaps  130:        { pre_literal, NULL, 0 }, /* nf */
                    131:        { pre_literal, NULL, 0 }, /* fi */
1.56      kristaps  132:        { NULL, NULL, 0 }, /* RE */
                    133:        { pre_RS, post_RS, 0 }, /* RS */
                    134:        { pre_ign, NULL, 0 }, /* DT */
                    135:        { pre_ign, NULL, 0 }, /* UC */
                    136:        { pre_ign, NULL, 0 }, /* PD */
1.70      joerg     137:        { pre_ign, NULL, 0 }, /* AT */
1.83      kristaps  138:        { pre_in, NULL, MAN_NOTEXT }, /* in */
1.89      kristaps  139:        { pre_ft, NULL, MAN_NOTEXT }, /* ft */
1.1       kristaps  140: };
                    141:
                    142:
                    143:
1.31      kristaps  144: void
1.36      kristaps  145: terminal_man(void *arg, const struct man *man)
1.1       kristaps  146: {
1.36      kristaps  147:        struct termp            *p;
                    148:        const struct man_node   *n;
                    149:        const struct man_meta   *m;
                    150:        struct mtermp            mt;
                    151:
                    152:        p = (struct termp *)arg;
                    153:
1.58      kristaps  154:        p->overstep = 0;
1.65      joerg     155:        p->maxrmargin = p->defrmargin;
1.77      kristaps  156:        p->tabwidth = term_len(p, 5);
1.73      kristaps  157:
1.36      kristaps  158:        if (NULL == p->symtab)
1.109     kristaps  159:                p->symtab = mchars_alloc();
1.36      kristaps  160:
                    161:        n = man_node(man);
                    162:        m = man_meta(man);
1.1       kristaps  163:
1.75      schwarze  164:        term_begin(p, print_man_head, print_man_foot, m);
1.1       kristaps  165:        p->flags |= TERMP_NOSPACE;
1.19      kristaps  166:
1.24      kristaps  167:        mt.fl = 0;
1.77      kristaps  168:        mt.lmargin = term_len(p, INDENT);
                    169:        mt.offset = term_len(p, INDENT);
1.24      kristaps  170:
1.36      kristaps  171:        if (n->child)
1.52      kristaps  172:                print_man_nodelist(p, &mt, n->child, m);
1.73      kristaps  173:
                    174:        term_end(p);
1.1       kristaps  175: }
                    176:
                    177:
1.77      kristaps  178: static size_t
                    179: a2height(const struct termp *p, const char *cp)
1.18      kristaps  180: {
1.40      kristaps  181:        struct roffsu    su;
1.18      kristaps  182:
1.77      kristaps  183:        if ( ! a2roffsu(cp, &su, SCALE_VS))
                    184:                SCALE_VS_INIT(&su, term_strlen(p, cp));
1.18      kristaps  185:
1.77      kristaps  186:        return(term_vspan(p, &su));
1.18      kristaps  187: }
                    188:
                    189:
                    190: static int
1.77      kristaps  191: a2width(const struct termp *p, const char *cp)
1.38      kristaps  192: {
1.40      kristaps  193:        struct roffsu    su;
1.38      kristaps  194:
1.77      kristaps  195:        if ( ! a2roffsu(cp, &su, SCALE_BU))
1.41      kristaps  196:                return(-1);
1.40      kristaps  197:
1.77      kristaps  198:        return((int)term_hspan(p, &su));
1.38      kristaps  199: }
                    200:
1.111   ! kristaps  201: /*
        !           202:  * Printing leading vertical space before a block.
        !           203:  * This is used for the paragraph macros.
        !           204:  * The rules are pretty simple, since there's very little nesting going
        !           205:  * on here.  Basically, if we're the first within another block (SS/SH),
        !           206:  * then don't emit vertical space.  If we are (RS), then do.  If not the
        !           207:  * first, print it.
        !           208:  */
1.39      kristaps  209: static void
                    210: print_bvspace(struct termp *p, const struct man_node *n)
1.18      kristaps  211: {
1.111   ! kristaps  212:
1.39      kristaps  213:        term_newln(p);
1.101     schwarze  214:
1.111   ! kristaps  215:        if (n->body && n->body->child)
        !           216:                if (MAN_TBL == n->body->child->type)
        !           217:                        return;
        !           218:
        !           219:        if (MAN_ROOT == n->parent->type || MAN_RS != n->parent->tok)
        !           220:                if (NULL == n->prev)
        !           221:                        return;
1.18      kristaps  222:
1.39      kristaps  223:        term_vspace(p);
1.18      kristaps  224: }
                    225:
1.3       kristaps  226: /* ARGSUSED */
1.1       kristaps  227: static int
1.29      kristaps  228: pre_ign(DECL_ARGS)
                    229: {
                    230:
                    231:        return(0);
                    232: }
                    233:
                    234:
                    235: /* ARGSUSED */
                    236: static int
1.1       kristaps  237: pre_I(DECL_ARGS)
                    238: {
                    239:
1.52      kristaps  240:        term_fontrepl(p, TERMFONT_UNDER);
1.19      kristaps  241:        return(1);
                    242: }
                    243:
                    244:
                    245: /* ARGSUSED */
1.3       kristaps  246: static int
1.84      kristaps  247: pre_literal(DECL_ARGS)
1.19      kristaps  248: {
                    249:
1.81      kristaps  250:        term_newln(p);
1.88      kristaps  251:
                    252:        if (MAN_nf == n->tok)
1.84      kristaps  253:                mt->fl |= MANT_LITERAL;
1.88      kristaps  254:        else
1.84      kristaps  255:                mt->fl &= ~MANT_LITERAL;
                    256:
1.99      schwarze  257:        return(0);
1.19      kristaps  258: }
                    259:
                    260: /* ARGSUSED */
                    261: static int
1.88      kristaps  262: pre_alternate(DECL_ARGS)
1.3       kristaps  263: {
1.88      kristaps  264:        enum termfont            font[2];
                    265:        const struct man_node   *nn;
                    266:        int                      savelit, i;
1.3       kristaps  267:
1.88      kristaps  268:        switch (n->tok) {
                    269:        case (MAN_RB):
                    270:                font[0] = TERMFONT_NONE;
                    271:                font[1] = TERMFONT_BOLD;
                    272:                break;
                    273:        case (MAN_RI):
                    274:                font[0] = TERMFONT_NONE;
                    275:                font[1] = TERMFONT_UNDER;
                    276:                break;
                    277:        case (MAN_BR):
                    278:                font[0] = TERMFONT_BOLD;
                    279:                font[1] = TERMFONT_NONE;
                    280:                break;
                    281:        case (MAN_BI):
                    282:                font[0] = TERMFONT_BOLD;
                    283:                font[1] = TERMFONT_UNDER;
                    284:                break;
                    285:        case (MAN_IR):
                    286:                font[0] = TERMFONT_UNDER;
                    287:                font[1] = TERMFONT_NONE;
                    288:                break;
                    289:        case (MAN_IB):
                    290:                font[0] = TERMFONT_UNDER;
                    291:                font[1] = TERMFONT_BOLD;
                    292:                break;
                    293:        default:
                    294:                abort();
                    295:        }
1.35      kristaps  296:
1.88      kristaps  297:        savelit = MANT_LITERAL & mt->fl;
                    298:        mt->fl &= ~MANT_LITERAL;
1.35      kristaps  299:
1.88      kristaps  300:        for (i = 0, nn = n->child; nn; nn = nn->next, i = 1 - i) {
                    301:                term_fontrepl(p, font[i]);
                    302:                if (savelit && NULL == nn->next)
                    303:                        mt->fl |= MANT_LITERAL;
1.45      kristaps  304:                print_man_node(p, mt, nn, m);
1.88      kristaps  305:                if (nn->next)
1.4       kristaps  306:                        p->flags |= TERMP_NOSPACE;
1.3       kristaps  307:        }
                    308:
                    309:        return(0);
                    310: }
                    311:
                    312: /* ARGSUSED */
1.1       kristaps  313: static int
                    314: pre_B(DECL_ARGS)
                    315: {
                    316:
1.52      kristaps  317:        term_fontrepl(p, TERMFONT_BOLD);
1.1       kristaps  318:        return(1);
1.89      kristaps  319: }
                    320:
                    321: /* ARGSUSED */
                    322: static int
                    323: pre_ft(DECL_ARGS)
                    324: {
                    325:        const char      *cp;
                    326:
                    327:        if (NULL == n->child) {
                    328:                term_fontlast(p);
                    329:                return(0);
                    330:        }
                    331:
                    332:        cp = n->child->string;
                    333:        switch (*cp) {
                    334:        case ('4'):
                    335:                /* FALLTHROUGH */
                    336:        case ('3'):
                    337:                /* FALLTHROUGH */
                    338:        case ('B'):
                    339:                term_fontrepl(p, TERMFONT_BOLD);
                    340:                break;
                    341:        case ('2'):
                    342:                /* FALLTHROUGH */
                    343:        case ('I'):
                    344:                term_fontrepl(p, TERMFONT_UNDER);
                    345:                break;
                    346:        case ('P'):
                    347:                term_fontlast(p);
                    348:                break;
                    349:        case ('1'):
                    350:                /* FALLTHROUGH */
                    351:        case ('C'):
                    352:                /* FALLTHROUGH */
                    353:        case ('R'):
                    354:                term_fontrepl(p, TERMFONT_NONE);
                    355:                break;
                    356:        default:
                    357:                break;
                    358:        }
                    359:        return(0);
1.83      kristaps  360: }
                    361:
                    362: /* ARGSUSED */
                    363: static int
                    364: pre_in(DECL_ARGS)
                    365: {
                    366:        int              len, less;
                    367:        size_t           v;
                    368:        const char      *cp;
                    369:
                    370:        term_newln(p);
                    371:
                    372:        if (NULL == n->child) {
                    373:                p->offset = mt->offset;
                    374:                return(0);
                    375:        }
                    376:
                    377:        cp = n->child->string;
                    378:        less = 0;
                    379:
                    380:        if ('-' == *cp)
                    381:                less = -1;
                    382:        else if ('+' == *cp)
                    383:                less = 1;
                    384:        else
                    385:                cp--;
                    386:
                    387:        if ((len = a2width(p, ++cp)) < 0)
                    388:                return(0);
                    389:
                    390:        v = (size_t)len;
                    391:
                    392:        if (less < 0)
                    393:                p->offset -= p->offset > v ? v : p->offset;
                    394:        else if (less > 0)
                    395:                p->offset += v;
                    396:        else
                    397:                p->offset = v;
1.95      kristaps  398:
                    399:        /* Don't let this creep beyond the right margin. */
                    400:
                    401:        if (p->offset > p->rmargin)
                    402:                p->offset = p->rmargin;
1.83      kristaps  403:
                    404:        return(0);
1.1       kristaps  405: }
                    406:
                    407:
1.3       kristaps  408: /* ARGSUSED */
1.1       kristaps  409: static int
1.19      kristaps  410: pre_sp(DECL_ARGS)
                    411: {
1.77      kristaps  412:        size_t           i, len;
1.19      kristaps  413:
1.82      kristaps  414:        switch (n->tok) {
                    415:        case (MAN_br):
                    416:                len = 0;
                    417:                break;
                    418:        default:
                    419:                len = n->child ? a2height(p, n->child->string) : 1;
                    420:                break;
                    421:        }
1.38      kristaps  422:
1.19      kristaps  423:        if (0 == len)
                    424:                term_newln(p);
1.82      kristaps  425:        for (i = 0; i < len; i++)
1.19      kristaps  426:                term_vspace(p);
                    427:
1.15      kristaps  428:        return(0);
                    429: }
                    430:
                    431:
                    432: /* ARGSUSED */
                    433: static int
1.19      kristaps  434: pre_HP(DECL_ARGS)
                    435: {
1.24      kristaps  436:        size_t                   len;
                    437:        int                      ival;
                    438:        const struct man_node   *nn;
1.19      kristaps  439:
1.20      kristaps  440:        switch (n->type) {
                    441:        case (MAN_BLOCK):
1.39      kristaps  442:                print_bvspace(p, n);
1.24      kristaps  443:                return(1);
1.20      kristaps  444:        case (MAN_BODY):
                    445:                p->flags |= TERMP_NOBREAK;
                    446:                p->flags |= TERMP_TWOSPACE;
                    447:                break;
                    448:        default:
                    449:                return(0);
                    450:        }
                    451:
1.26      kristaps  452:        len = mt->lmargin;
1.24      kristaps  453:        ival = -1;
                    454:
                    455:        /* Calculate offset. */
                    456:
1.39      kristaps  457:        if (NULL != (nn = n->parent->head->child))
1.77      kristaps  458:                if ((ival = a2width(p, nn->string)) >= 0)
1.24      kristaps  459:                        len = (size_t)ival;
                    460:
                    461:        if (0 == len)
1.77      kristaps  462:                len = term_len(p, 1);
1.24      kristaps  463:
1.26      kristaps  464:        p->offset = mt->offset;
                    465:        p->rmargin = mt->offset + len;
1.24      kristaps  466:
                    467:        if (ival >= 0)
1.26      kristaps  468:                mt->lmargin = (size_t)ival;
1.24      kristaps  469:
1.19      kristaps  470:        return(1);
                    471: }
                    472:
                    473:
                    474: /* ARGSUSED */
1.20      kristaps  475: static void
                    476: post_HP(DECL_ARGS)
                    477: {
                    478:
                    479:        switch (n->type) {
1.24      kristaps  480:        case (MAN_BLOCK):
                    481:                term_flushln(p);
                    482:                break;
1.20      kristaps  483:        case (MAN_BODY):
                    484:                term_flushln(p);
                    485:                p->flags &= ~TERMP_NOBREAK;
                    486:                p->flags &= ~TERMP_TWOSPACE;
1.26      kristaps  487:                p->offset = mt->offset;
1.20      kristaps  488:                p->rmargin = p->maxrmargin;
                    489:                break;
                    490:        default:
                    491:                break;
                    492:        }
                    493: }
                    494:
                    495:
                    496: /* ARGSUSED */
1.19      kristaps  497: static int
1.1       kristaps  498: pre_PP(DECL_ARGS)
                    499: {
                    500:
1.19      kristaps  501:        switch (n->type) {
                    502:        case (MAN_BLOCK):
1.77      kristaps  503:                mt->lmargin = term_len(p, INDENT);
1.39      kristaps  504:                print_bvspace(p, n);
1.19      kristaps  505:                break;
                    506:        default:
1.26      kristaps  507:                p->offset = mt->offset;
1.19      kristaps  508:                break;
                    509:        }
                    510:
1.87      kristaps  511:        return(MAN_HEAD != n->type);
1.1       kristaps  512: }
                    513:
                    514:
1.3       kristaps  515: /* ARGSUSED */
1.1       kristaps  516: static int
1.4       kristaps  517: pre_IP(DECL_ARGS)
                    518: {
1.22      kristaps  519:        const struct man_node   *nn;
                    520:        size_t                   len;
1.94      schwarze  521:        int                      savelit, ival;
1.18      kristaps  522:
1.22      kristaps  523:        switch (n->type) {
                    524:        case (MAN_BODY):
                    525:                p->flags |= TERMP_NOLPAD;
                    526:                p->flags |= TERMP_NOSPACE;
                    527:                break;
                    528:        case (MAN_HEAD):
                    529:                p->flags |= TERMP_NOBREAK;
                    530:                break;
1.23      kristaps  531:        case (MAN_BLOCK):
1.39      kristaps  532:                print_bvspace(p, n);
1.23      kristaps  533:                /* FALLTHROUGH */
1.22      kristaps  534:        default:
                    535:                return(1);
                    536:        }
1.18      kristaps  537:
1.26      kristaps  538:        len = mt->lmargin;
1.22      kristaps  539:        ival = -1;
1.4       kristaps  540:
1.94      schwarze  541:        /* Calculate the offset from the optional second argument. */
1.22      kristaps  542:        if (NULL != (nn = n->parent->head->child))
1.94      schwarze  543:                if (NULL != (nn = nn->next))
1.77      kristaps  544:                        if ((ival = a2width(p, nn->string)) >= 0)
1.22      kristaps  545:                                len = (size_t)ival;
1.4       kristaps  546:
1.22      kristaps  547:        switch (n->type) {
                    548:        case (MAN_HEAD):
1.23      kristaps  549:                /* Handle zero-width lengths. */
                    550:                if (0 == len)
1.77      kristaps  551:                        len = term_len(p, 1);
1.23      kristaps  552:
1.26      kristaps  553:                p->offset = mt->offset;
                    554:                p->rmargin = mt->offset + len;
1.22      kristaps  555:                if (ival < 0)
                    556:                        break;
1.18      kristaps  557:
1.24      kristaps  558:                /* Set the saved left-margin. */
1.26      kristaps  559:                mt->lmargin = (size_t)ival;
1.24      kristaps  560:
1.94      schwarze  561:                savelit = MANT_LITERAL & mt->fl;
                    562:                mt->fl &= ~MANT_LITERAL;
                    563:
                    564:                if (n->child)
                    565:                        print_man_node(p, mt, n->child, m);
                    566:
                    567:                if (savelit)
                    568:                        mt->fl |= MANT_LITERAL;
                    569:
1.22      kristaps  570:                return(0);
1.23      kristaps  571:        case (MAN_BODY):
1.26      kristaps  572:                p->offset = mt->offset + len;
1.23      kristaps  573:                p->rmargin = p->maxrmargin;
                    574:                break;
1.22      kristaps  575:        default:
                    576:                break;
1.18      kristaps  577:        }
                    578:
1.22      kristaps  579:        return(1);
                    580: }
1.18      kristaps  581:
                    582:
1.22      kristaps  583: /* ARGSUSED */
                    584: static void
                    585: post_IP(DECL_ARGS)
                    586: {
1.4       kristaps  587:
1.22      kristaps  588:        switch (n->type) {
                    589:        case (MAN_HEAD):
                    590:                term_flushln(p);
                    591:                p->flags &= ~TERMP_NOBREAK;
                    592:                p->rmargin = p->maxrmargin;
                    593:                break;
                    594:        case (MAN_BODY):
1.94      schwarze  595:                term_newln(p);
1.22      kristaps  596:                p->flags &= ~TERMP_NOLPAD;
                    597:                break;
                    598:        default:
                    599:                break;
                    600:        }
1.4       kristaps  601: }
                    602:
                    603:
                    604: /* ARGSUSED */
                    605: static int
1.1       kristaps  606: pre_TP(DECL_ARGS)
                    607: {
1.23      kristaps  608:        const struct man_node   *nn;
                    609:        size_t                   len;
1.94      schwarze  610:        int                      savelit, ival;
1.1       kristaps  611:
1.21      kristaps  612:        switch (n->type) {
                    613:        case (MAN_HEAD):
                    614:                p->flags |= TERMP_NOBREAK;
                    615:                break;
                    616:        case (MAN_BODY):
                    617:                p->flags |= TERMP_NOLPAD;
                    618:                p->flags |= TERMP_NOSPACE;
1.23      kristaps  619:                break;
                    620:        case (MAN_BLOCK):
1.39      kristaps  621:                print_bvspace(p, n);
1.23      kristaps  622:                /* FALLTHROUGH */
                    623:        default:
                    624:                return(1);
                    625:        }
                    626:
1.24      kristaps  627:        len = (size_t)mt->lmargin;
1.23      kristaps  628:        ival = -1;
                    629:
                    630:        /* Calculate offset. */
                    631:
1.56      kristaps  632:        if (NULL != (nn = n->parent->head->child)) {
                    633:                while (nn && MAN_TEXT != nn->type)
                    634:                        nn = nn->next;
                    635:                if (nn && nn->next)
1.77      kristaps  636:                        if ((ival = a2width(p, nn->string)) >= 0)
1.23      kristaps  637:                                len = (size_t)ival;
1.56      kristaps  638:        }
1.23      kristaps  639:
                    640:        switch (n->type) {
                    641:        case (MAN_HEAD):
                    642:                /* Handle zero-length properly. */
                    643:                if (0 == len)
1.77      kristaps  644:                        len = term_len(p, 1);
1.23      kristaps  645:
1.26      kristaps  646:                p->offset = mt->offset;
                    647:                p->rmargin = mt->offset + len;
1.23      kristaps  648:
1.94      schwarze  649:                savelit = MANT_LITERAL & mt->fl;
                    650:                mt->fl &= ~MANT_LITERAL;
                    651:
1.23      kristaps  652:                /* Don't print same-line elements. */
1.94      schwarze  653:                for (nn = n->child; nn; nn = nn->next)
1.23      kristaps  654:                        if (nn->line > n->line)
1.45      kristaps  655:                                print_man_node(p, mt, nn, m);
1.24      kristaps  656:
1.94      schwarze  657:                if (savelit)
                    658:                        mt->fl |= MANT_LITERAL;
                    659:
1.24      kristaps  660:                if (ival >= 0)
1.26      kristaps  661:                        mt->lmargin = (size_t)ival;
1.24      kristaps  662:
1.23      kristaps  663:                return(0);
                    664:        case (MAN_BODY):
1.26      kristaps  665:                p->offset = mt->offset + len;
1.23      kristaps  666:                p->rmargin = p->maxrmargin;
1.21      kristaps  667:                break;
                    668:        default:
                    669:                break;
                    670:        }
1.16      kristaps  671:
1.21      kristaps  672:        return(1);
                    673: }
1.1       kristaps  674:
                    675:
1.21      kristaps  676: /* ARGSUSED */
                    677: static void
                    678: post_TP(DECL_ARGS)
                    679: {
1.1       kristaps  680:
1.21      kristaps  681:        switch (n->type) {
                    682:        case (MAN_HEAD):
                    683:                term_flushln(p);
                    684:                p->flags &= ~TERMP_NOBREAK;
                    685:                p->flags &= ~TERMP_TWOSPACE;
                    686:                p->rmargin = p->maxrmargin;
                    687:                break;
                    688:        case (MAN_BODY):
1.94      schwarze  689:                term_newln(p);
1.21      kristaps  690:                p->flags &= ~TERMP_NOLPAD;
                    691:                break;
                    692:        default:
                    693:                break;
                    694:        }
1.1       kristaps  695: }
                    696:
                    697:
1.3       kristaps  698: /* ARGSUSED */
1.1       kristaps  699: static int
                    700: pre_SS(DECL_ARGS)
                    701: {
                    702:
1.19      kristaps  703:        switch (n->type) {
                    704:        case (MAN_BLOCK):
1.77      kristaps  705:                mt->lmargin = term_len(p, INDENT);
                    706:                mt->offset = term_len(p, INDENT);
1.24      kristaps  707:                /* If following a prior empty `SS', no vspace. */
                    708:                if (n->prev && MAN_SS == n->prev->tok)
                    709:                        if (NULL == n->prev->body->child)
                    710:                                break;
                    711:                if (NULL == n->prev)
                    712:                        break;
                    713:                term_vspace(p);
1.19      kristaps  714:                break;
                    715:        case (MAN_HEAD):
1.52      kristaps  716:                term_fontrepl(p, TERMFONT_BOLD);
1.77      kristaps  717:                p->offset = term_len(p, HALFINDENT);
1.19      kristaps  718:                break;
1.24      kristaps  719:        case (MAN_BODY):
1.26      kristaps  720:                p->offset = mt->offset;
1.24      kristaps  721:                break;
1.19      kristaps  722:        default:
                    723:                break;
                    724:        }
                    725:
1.1       kristaps  726:        return(1);
                    727: }
                    728:
                    729:
1.3       kristaps  730: /* ARGSUSED */
1.1       kristaps  731: static void
                    732: post_SS(DECL_ARGS)
                    733: {
                    734:
1.19      kristaps  735:        switch (n->type) {
                    736:        case (MAN_HEAD):
                    737:                term_newln(p);
                    738:                break;
1.24      kristaps  739:        case (MAN_BODY):
                    740:                term_newln(p);
                    741:                break;
1.19      kristaps  742:        default:
                    743:                break;
                    744:        }
1.1       kristaps  745: }
                    746:
                    747:
1.3       kristaps  748: /* ARGSUSED */
1.1       kristaps  749: static int
                    750: pre_SH(DECL_ARGS)
                    751: {
1.22      kristaps  752:
1.19      kristaps  753:        switch (n->type) {
                    754:        case (MAN_BLOCK):
1.77      kristaps  755:                mt->lmargin = term_len(p, INDENT);
                    756:                mt->offset = term_len(p, INDENT);
1.22      kristaps  757:                /* If following a prior empty `SH', no vspace. */
1.19      kristaps  758:                if (n->prev && MAN_SH == n->prev->tok)
                    759:                        if (NULL == n->prev->body->child)
                    760:                                break;
1.61      kristaps  761:                /* If the first macro, no vspae. */
                    762:                if (NULL == n->prev)
                    763:                        break;
1.19      kristaps  764:                term_vspace(p);
                    765:                break;
                    766:        case (MAN_HEAD):
1.52      kristaps  767:                term_fontrepl(p, TERMFONT_BOLD);
1.19      kristaps  768:                p->offset = 0;
                    769:                break;
                    770:        case (MAN_BODY):
1.26      kristaps  771:                p->offset = mt->offset;
1.19      kristaps  772:                break;
                    773:        default:
                    774:                break;
                    775:        }
1.1       kristaps  776:
                    777:        return(1);
                    778: }
                    779:
                    780:
1.3       kristaps  781: /* ARGSUSED */
1.1       kristaps  782: static void
                    783: post_SH(DECL_ARGS)
                    784: {
                    785:
1.19      kristaps  786:        switch (n->type) {
                    787:        case (MAN_HEAD):
                    788:                term_newln(p);
                    789:                break;
                    790:        case (MAN_BODY):
                    791:                term_newln(p);
                    792:                break;
                    793:        default:
                    794:                break;
                    795:        }
1.1       kristaps  796: }
                    797:
1.26      kristaps  798: /* ARGSUSED */
                    799: static int
                    800: pre_RS(DECL_ARGS)
                    801: {
1.110     kristaps  802:        int              ival;
                    803:        size_t           sz;
1.26      kristaps  804:
                    805:        switch (n->type) {
                    806:        case (MAN_BLOCK):
                    807:                term_newln(p);
                    808:                return(1);
                    809:        case (MAN_HEAD):
                    810:                return(0);
                    811:        default:
                    812:                break;
                    813:        }
                    814:
1.110     kristaps  815:        sz = term_len(p, INDENT);
1.26      kristaps  816:
1.110     kristaps  817:        if (NULL != (n = n->parent->head->child))
                    818:                if ((ival = a2width(p, n->string)) >= 0)
                    819:                        sz = (size_t)ival;
1.26      kristaps  820:
1.110     kristaps  821:        mt->offset += sz;
1.26      kristaps  822:        p->offset = mt->offset;
                    823:
                    824:        return(1);
                    825: }
                    826:
                    827: /* ARGSUSED */
                    828: static void
                    829: post_RS(DECL_ARGS)
                    830: {
1.110     kristaps  831:        int              ival;
                    832:        size_t           sz;
1.26      kristaps  833:
                    834:        switch (n->type) {
                    835:        case (MAN_BLOCK):
1.110     kristaps  836:                return;
1.59      kristaps  837:        case (MAN_HEAD):
1.110     kristaps  838:                return;
1.26      kristaps  839:        default:
                    840:                term_newln(p);
                    841:                break;
                    842:        }
1.110     kristaps  843:
                    844:        sz = term_len(p, INDENT);
                    845:
                    846:        if (NULL != (n = n->parent->head->child))
                    847:                if ((ival = a2width(p, n->string)) >= 0)
                    848:                        sz = (size_t)ival;
                    849:
                    850:        mt->offset = mt->offset < sz ?  0 : mt->offset - sz;
                    851:        p->offset = mt->offset;
1.26      kristaps  852: }
                    853:
1.1       kristaps  854: static void
1.45      kristaps  855: print_man_node(DECL_ARGS)
1.1       kristaps  856: {
1.65      joerg     857:        size_t           rm, rmax;
1.54      kristaps  858:        int              c;
1.1       kristaps  859:
                    860:        switch (n->type) {
                    861:        case(MAN_TEXT):
1.97      kristaps  862:                /*
                    863:                 * If we have a blank line, output a vertical space.
                    864:                 * If we have a space as the first character, break
                    865:                 * before printing the line's data.
                    866:                 */
1.96      kristaps  867:                if ('\0' == *n->string) {
1.4       kristaps  868:                        term_vspace(p);
1.98      schwarze  869:                        return;
1.97      kristaps  870:                } else if (' ' == *n->string && MAN_LINE & n->flags)
1.96      kristaps  871:                        term_newln(p);
1.54      kristaps  872:
1.4       kristaps  873:                term_word(p, n->string);
1.52      kristaps  874:
1.97      kristaps  875:                /*
                    876:                 * If we're in a literal context, make sure that words
                    877:                 * togehter on the same line stay together.  This is a
                    878:                 * POST-printing call, so we check the NEXT word.  Since
                    879:                 * -man doesn't have nested macros, we don't need to be
                    880:                 * more specific than this.
                    881:                 */
                    882:                if (MANT_LITERAL & mt->fl &&
                    883:                                (NULL == n->next ||
                    884:                                 n->next->line > n->line)) {
1.65      joerg     885:                        rm = p->rmargin;
                    886:                        rmax = p->maxrmargin;
1.60      kristaps  887:                        p->rmargin = p->maxrmargin = TERM_MAXMARGIN;
1.19      kristaps  888:                        p->flags |= TERMP_NOSPACE;
                    889:                        term_flushln(p);
1.94      schwarze  890:                        p->flags &= ~TERMP_NOLPAD;
1.65      joerg     891:                        p->rmargin = rm;
                    892:                        p->maxrmargin = rmax;
1.19      kristaps  893:                }
1.100     schwarze  894:
                    895:                if (MAN_EOS & n->flags)
                    896:                        p->flags |= TERMP_SENTENCE;
1.102     kristaps  897:                return;
                    898:        case (MAN_EQN):
1.103     kristaps  899:                term_word(p, n->eqn->data);
1.97      kristaps  900:                return;
1.91      kristaps  901:        case (MAN_TBL):
1.97      kristaps  902:                /*
                    903:                 * Tables are preceded by a newline.  Then process a
                    904:                 * table line, which will cause line termination,
                    905:                 */
1.93      kristaps  906:                if (TBL_SPAN_FIRST & n->span->flags)
                    907:                        term_newln(p);
1.92      kristaps  908:                term_tbl(p, n->span);
1.97      kristaps  909:                return;
1.1       kristaps  910:        default:
                    911:                break;
                    912:        }
                    913:
1.97      kristaps  914:        if ( ! (MAN_NOTEXT & termacts[n->tok].flags))
                    915:                term_fontrepl(p, TERMFONT_NONE);
                    916:
                    917:        c = 1;
                    918:        if (termacts[n->tok].pre)
                    919:                c = (*termacts[n->tok].pre)(p, mt, n, m);
                    920:
1.1       kristaps  921:        if (c && n->child)
1.52      kristaps  922:                print_man_nodelist(p, mt, n->child, m);
1.1       kristaps  923:
1.97      kristaps  924:        if (termacts[n->tok].post)
                    925:                (*termacts[n->tok].post)(p, mt, n, m);
                    926:        if ( ! (MAN_NOTEXT & termacts[n->tok].flags))
                    927:                term_fontrepl(p, TERMFONT_NONE);
1.63      kristaps  928:
                    929:        if (MAN_EOS & n->flags)
                    930:                p->flags |= TERMP_SENTENCE;
1.1       kristaps  931: }
                    932:
                    933:
                    934: static void
1.52      kristaps  935: print_man_nodelist(DECL_ARGS)
1.1       kristaps  936: {
1.19      kristaps  937:
1.45      kristaps  938:        print_man_node(p, mt, n, m);
1.1       kristaps  939:        if ( ! n->next)
                    940:                return;
1.52      kristaps  941:        print_man_nodelist(p, mt, n->next, m);
1.1       kristaps  942: }
                    943:
                    944:
1.31      kristaps  945: static void
1.73      kristaps  946: print_man_foot(struct termp *p, const void *arg)
1.1       kristaps  947: {
1.73      kristaps  948:        const struct man_meta *meta;
                    949:
                    950:        meta = (const struct man_meta *)arg;
1.1       kristaps  951:
1.52      kristaps  952:        term_fontrepl(p, TERMFONT_NONE);
1.50      kristaps  953:
1.69      joerg     954:        term_vspace(p);
                    955:        term_vspace(p);
1.1       kristaps  956:        term_vspace(p);
                    957:
                    958:        p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
1.104     schwarze  959:        p->rmargin = p->maxrmargin - term_strlen(p, meta->date);
1.1       kristaps  960:        p->offset = 0;
1.85      kristaps  961:
                    962:        /* term_strlen() can return zero. */
                    963:        if (p->rmargin == p->maxrmargin)
                    964:                p->rmargin--;
1.1       kristaps  965:
                    966:        if (meta->source)
                    967:                term_word(p, meta->source);
                    968:        if (meta->source)
                    969:                term_word(p, "");
                    970:        term_flushln(p);
                    971:
                    972:        p->flags |= TERMP_NOLPAD | TERMP_NOSPACE;
                    973:        p->offset = p->rmargin;
                    974:        p->rmargin = p->maxrmargin;
                    975:        p->flags &= ~TERMP_NOBREAK;
                    976:
1.104     schwarze  977:        term_word(p, meta->date);
1.1       kristaps  978:        term_flushln(p);
                    979: }
                    980:
                    981:
1.31      kristaps  982: static void
1.73      kristaps  983: print_man_head(struct termp *p, const void *arg)
1.1       kristaps  984: {
1.46      kristaps  985:        char            buf[BUFSIZ], title[BUFSIZ];
1.57      kristaps  986:        size_t          buflen, titlen;
1.73      kristaps  987:        const struct man_meta *m;
                    988:
                    989:        m = (const struct man_meta *)arg;
1.1       kristaps  990:
1.62      kristaps  991:        /*
                    992:         * Note that old groff would spit out some spaces before the
                    993:         * header.  We discontinue this strange behaviour, but at one
                    994:         * point we did so here.
                    995:         */
                    996:
1.1       kristaps  997:        p->rmargin = p->maxrmargin;
1.58      kristaps  998:
1.1       kristaps  999:        p->offset = 0;
1.46      kristaps 1000:        buf[0] = title[0] = '\0';
1.1       kristaps 1001:
1.46      kristaps 1002:        if (m->vol)
                   1003:                strlcpy(buf, m->vol, BUFSIZ);
1.77      kristaps 1004:        buflen = term_strlen(p, buf);
1.1       kristaps 1005:
1.64      kristaps 1006:        snprintf(title, BUFSIZ, "%s(%s)", m->title, m->msec);
1.77      kristaps 1007:        titlen = term_strlen(p, title);
1.1       kristaps 1008:
                   1009:        p->offset = 0;
1.57      kristaps 1010:        p->rmargin = 2 * (titlen+1) + buflen < p->maxrmargin ?
1.77      kristaps 1011:            (p->maxrmargin -
                   1012:             term_strlen(p, buf) + term_len(p, 1)) / 2 :
1.57      kristaps 1013:            p->maxrmargin - buflen;
1.1       kristaps 1014:        p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
                   1015:
                   1016:        term_word(p, title);
                   1017:        term_flushln(p);
                   1018:
                   1019:        p->flags |= TERMP_NOLPAD | TERMP_NOSPACE;
                   1020:        p->offset = p->rmargin;
1.57      kristaps 1021:        p->rmargin = p->offset + buflen + titlen < p->maxrmargin ?
                   1022:            p->maxrmargin - titlen : p->maxrmargin;
1.1       kristaps 1023:
                   1024:        term_word(p, buf);
                   1025:        term_flushln(p);
                   1026:
                   1027:        p->flags &= ~TERMP_NOBREAK;
1.57      kristaps 1028:        if (p->rmargin + titlen <= p->maxrmargin) {
                   1029:                p->flags |= TERMP_NOLPAD | TERMP_NOSPACE;
                   1030:                p->offset = p->rmargin;
                   1031:                p->rmargin = p->maxrmargin;
                   1032:                term_word(p, title);
                   1033:                term_flushln(p);
                   1034:        }
1.1       kristaps 1035:
                   1036:        p->rmargin = p->maxrmargin;
                   1037:        p->offset = 0;
                   1038:        p->flags &= ~TERMP_NOSPACE;
1.61      kristaps 1039:
1.62      kristaps 1040:        /*
                   1041:         * Groff likes to have some leading spaces before content.  Well
                   1042:         * that's fine by me.
                   1043:         */
                   1044:
1.61      kristaps 1045:        term_vspace(p);
                   1046:        term_vspace(p);
                   1047:        term_vspace(p);
1.1       kristaps 1048: }

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