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/* $OpenBSD$ */
/*
* Copyright (c) 2010, 2014, 2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <assert.h>
#include <stddef.h>
#include "roff.h"
#include "out.h"
#include "term.h"
#define ROFF_TERM_ARGS struct termp *p, const struct roff_node *n
typedef void (*roff_term_pre_fp)(ROFF_TERM_ARGS);
static void roff_term_pre_br(ROFF_TERM_ARGS);
static void roff_term_pre_ft(ROFF_TERM_ARGS);
static void roff_term_pre_ll(ROFF_TERM_ARGS);
static void roff_term_pre_sp(ROFF_TERM_ARGS);
static void roff_term_pre_ta(ROFF_TERM_ARGS);
static const roff_term_pre_fp roff_term_pre_acts[ROFF_MAX] = {
roff_term_pre_br, /* br */
roff_term_pre_ft, /* ft */
roff_term_pre_ll, /* ft */
roff_term_pre_sp, /* sp */
roff_term_pre_ta, /* ta */
};
void
roff_term_pre(struct termp *p, const struct roff_node *n)
{
assert(n->tok < ROFF_MAX);
(*roff_term_pre_acts[n->tok])(p, n);
}
static void
roff_term_pre_br(ROFF_TERM_ARGS)
{
term_newln(p);
if (p->flags & TERMP_BRIND) {
p->offset = p->rmargin;
p->rmargin = p->maxrmargin;
p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
}
}
static void
roff_term_pre_ft(ROFF_TERM_ARGS)
{
switch (*n->child->string) {
case '4':
case '3':
case 'B':
term_fontrepl(p, TERMFONT_BOLD);
break;
case '2':
case 'I':
term_fontrepl(p, TERMFONT_UNDER);
break;
case 'P':
term_fontlast(p);
break;
case '1':
case 'C':
case 'R':
term_fontrepl(p, TERMFONT_NONE);
break;
default:
break;
}
}
static void
roff_term_pre_ll(ROFF_TERM_ARGS)
{
term_setwidth(p, n->child != NULL ? n->child->string : NULL);
}
static void
roff_term_pre_sp(ROFF_TERM_ARGS)
{
struct roffsu su;
int len;
if (n->child != NULL) {
if (a2roffsu(n->child->string, &su, SCALE_VS) == 0)
su.scale = 1.0;
len = term_vspan(p, &su);
} else
len = 1;
if (len < 0)
p->skipvsp -= len;
else
while (len--)
term_vspace(p);
roff_term_pre_br(p, n);
}
static void
roff_term_pre_ta(ROFF_TERM_ARGS)
{
term_tab_set(p, NULL);
for (n = n->child; n != NULL; n = n->next)
term_tab_set(p, n->string);
}
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