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Annotation of mandoc/roff_term.c, Revision 1.4

1.1       schwarze    1: /*     $OpenBSD$ */
                      2: /*
1.4     ! schwarze    3:  * Copyright (c) 2010, 2014, 2015, 2017 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:  */
                     17: #include <sys/types.h>
                     18:
                     19: #include <assert.h>
1.3       schwarze   20: #include <stddef.h>
1.1       schwarze   21:
                     22: #include "roff.h"
                     23: #include "out.h"
                     24: #include "term.h"
                     25:
                     26: #define        ROFF_TERM_ARGS struct termp *p, const struct roff_node *n
                     27:
                     28: typedef        void    (*roff_term_pre_fp)(ROFF_TERM_ARGS);
                     29:
                     30: static void      roff_term_pre_br(ROFF_TERM_ARGS);
1.2       schwarze   31: static void      roff_term_pre_ft(ROFF_TERM_ARGS);
1.3       schwarze   32: static void      roff_term_pre_ll(ROFF_TERM_ARGS);
1.4     ! schwarze   33: static void      roff_term_pre_sp(ROFF_TERM_ARGS);
1.1       schwarze   34:
                     35: static const roff_term_pre_fp roff_term_pre_acts[ROFF_MAX] = {
                     36:        roff_term_pre_br,  /* br */
1.2       schwarze   37:        roff_term_pre_ft,  /* ft */
1.3       schwarze   38:        roff_term_pre_ll,  /* ft */
1.4     ! schwarze   39:        roff_term_pre_sp,  /* br */
1.1       schwarze   40: };
                     41:
                     42:
                     43: void
                     44: roff_term_pre(struct termp *p, const struct roff_node *n)
                     45: {
                     46:        assert(n->tok < ROFF_MAX);
                     47:        (*roff_term_pre_acts[n->tok])(p, n);
                     48: }
                     49:
                     50: static void
                     51: roff_term_pre_br(ROFF_TERM_ARGS)
                     52: {
                     53:        term_newln(p);
                     54:        if (p->flags & TERMP_BRIND) {
                     55:                p->offset = p->rmargin;
                     56:                p->rmargin = p->maxrmargin;
                     57:                p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
1.2       schwarze   58:        }
                     59: }
                     60:
                     61: static void
                     62: roff_term_pre_ft(ROFF_TERM_ARGS)
                     63: {
                     64:        switch (*n->child->string) {
                     65:        case '4':
                     66:        case '3':
                     67:        case 'B':
                     68:                term_fontrepl(p, TERMFONT_BOLD);
                     69:                break;
                     70:        case '2':
                     71:        case 'I':
                     72:                term_fontrepl(p, TERMFONT_UNDER);
                     73:                break;
                     74:        case 'P':
                     75:                term_fontlast(p);
                     76:                break;
                     77:        case '1':
                     78:        case 'C':
                     79:        case 'R':
                     80:                term_fontrepl(p, TERMFONT_NONE);
                     81:                break;
                     82:        default:
                     83:                break;
1.1       schwarze   84:        }
1.3       schwarze   85: }
                     86:
                     87: static void
                     88: roff_term_pre_ll(ROFF_TERM_ARGS)
                     89: {
                     90:        term_setwidth(p, n->child != NULL ? n->child->string : NULL);
1.4     ! schwarze   91: }
        !            92:
        !            93: static void
        !            94: roff_term_pre_sp(ROFF_TERM_ARGS)
        !            95: {
        !            96:        struct roffsu    su;
        !            97:        int              len;
        !            98:
        !            99:        if (n->child != NULL) {
        !           100:                if (a2roffsu(n->child->string, &su, SCALE_VS) == 0)
        !           101:                        su.scale = 1.0;
        !           102:                len = term_vspan(p, &su);
        !           103:        } else
        !           104:                len = 1;
        !           105:
        !           106:        if (len < 0)
        !           107:                p->skipvsp -= len;
        !           108:        else
        !           109:                while (len--)
        !           110:                        term_vspace(p);
        !           111:
        !           112:        roff_term_pre_br(p, n);
1.1       schwarze  113: }