/*      @(#)tth19.c     8.1 (Berkeley) 6/6/93   */
/*      $NetBSD: tth19.c,v 1.7 2009/04/14 08:50:06 lukem Exp $  */

/*
 * Copyright (c) 1983, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Edward Wang at The University of California, Berkeley.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "ww.h"
#include "tt.h"
#include "char.h"

/*
kb|h19|heath|h19-b|h19b|heathkit|heath-19|z19|zenith:
        cr=^M:nl=^J:bl=^G:al=1*\EL:am:le=^H:bs:cd=\EJ:ce=\EK:
        cl=\EE:cm=\EY%+ %+ :co#80:dc=\EN:dl=1*\EM:do=\EB:
        ei=\EO:ho=\EH:im=\E@:li#24:mi:nd=\EC:as=\EF:ae=\EG:ms:
        ta=^I:pt:sr=\EI:se=\Eq:so=\Ep:up=\EA:vs=\Ex4:ve=\Ey4:
        kb=^h:ku=\EA:kd=\EB:kl=\ED:kr=\EC:kh=\EH:
        kn#8:k1=\ES:k2=\ET:k3=\EU:k4=\EV:k5=\EW:
        l6=blue:l7=red:l8=white:k6=\EP:k7=\EQ:k8=\ER:
        es:hs:ts=\Ej\Ex5\Ex1\EY8%+ \Eo:fs=\Ek\Ey5:ds=\Ey1:
*/

#define NCOL    80
#define NROW    24

#define G (WWM_GRP << WWC_MSHIFT)
short h19_frame[16] = {
        ' ',    '`'|G,  'a'|G,  'e'|G,
        '`'|G,  '`'|G,  'f'|G,  'v'|G,
        'a'|G,  'd'|G,  'a'|G,  'u'|G,
        'c'|G,  't'|G,  's'|G,  'b'|G
};

extern struct tt_str *gen_VS;
extern struct tt_str *gen_VE;

int h19_msp10c;

#define PAD(ms10) { \
        int i; \
        for (i = ((ms10) + 5) / h19_msp10c; --i >= 0;) \
                ttputc('\0'); \
}
#define ICPAD() PAD((NCOL - tt.tt_col) * 1)     /* 0.1 ms per char */
#define ILPAD() PAD((NROW - tt.tt_row) * 10)    /* 1 ms per char */

#define H19_SETINSERT(m) ttesc((tt.tt_insert = (m)) ? '@' : 'O')

void    h19_clear(void);
void    h19_clreol(void);
void    h19_clreos(void);
void    h19_delchar(int);
void    h19_delline(int);
void    h19_end(void);
void    h19_inschar(char);
void    h19_insline(int);
void    h19_move(int, int);
void    h19_putc(char);
void    h19_scroll_up(int);
void    h19_scroll_down(int);
void    h19_setmodes(int);
void    h19_start(void);
void    h19_write(const char *, int);

void
h19_setmodes(int new)
{
        int diff;

        diff = new ^ tt.tt_modes;
        if (diff & WWM_REV)
                ttesc(new & WWM_REV ? 'p' : 'q');
        if (diff & WWM_GRP)
                ttesc(new & WWM_REV ? 'F' : 'G');
        tt.tt_modes = new;
}

void
h19_insline(int n)
{
        while (--n >= 0) {
                ttesc('L');
                ILPAD();
        }
}

void
h19_delline(int n)
{
        while (--n >= 0) {
                ttesc('M');
                ILPAD();
        }
}

void
h19_putc(char c)
{
        if (tt.tt_nmodes != tt.tt_modes)
                (*tt.tt_setmodes)(tt.tt_nmodes);
        if (tt.tt_insert)
                H19_SETINSERT(0);
        ttputc(c);
        if (++tt.tt_col == NCOL)
                tt.tt_col = NCOL - 1;
}

void
h19_write(const char *p, int n)
{
        if (tt.tt_nmodes != tt.tt_modes)
                (*tt.tt_setmodes)(tt.tt_nmodes);
        if (tt.tt_insert)
                H19_SETINSERT(0);
        ttwrite(p, n);
        tt.tt_col += n;
        if (tt.tt_col == NCOL)
                tt.tt_col = NCOL - 1;
}

void
h19_move(int row, int col)
{
        if (tt.tt_row == row) {
                if (tt.tt_col == col)
                        return;
                if (col == 0) {
                        ttctrl('m');
                        goto out;
                }
                if (tt.tt_col == col - 1) {
                        ttesc('C');
                        goto out;
                }
                if (tt.tt_col == col + 1) {
                        ttctrl('h');
                        goto out;
                }
        }
        if (tt.tt_col == col) {
                if (tt.tt_row == row + 1) {
                        ttesc('A');
                        goto out;
                }
                if (tt.tt_row == row - 1) {
                        ttctrl('j');
                        goto out;
                }
        }
        if (col == 0 && row == 0) {
                ttesc('H');
                goto out;
        }
        ttesc('Y');
        ttputc(' ' + row);
        ttputc(' ' + col);
out:
        tt.tt_col = col;
        tt.tt_row = row;
}

void
h19_start(void)
{
        if (gen_VS)
                ttxputs(gen_VS);
        ttesc('w');
        ttesc('E');
        tt.tt_col = tt.tt_row = 0;
        tt.tt_insert = 0;
        tt.tt_nmodes = tt.tt_modes = 0;
}

void
h19_end(void)
{
        if (tt.tt_insert)
                H19_SETINSERT(0);
        if (gen_VE)
                ttxputs(gen_VE);
        ttesc('v');
}

void
h19_clreol(void)
{
        ttesc('K');
}

void
h19_clreos(void)
{
        ttesc('J');
}

void
h19_clear(void)
{
        ttesc('E');
}

void
h19_inschar(char c)
{
        if (tt.tt_nmodes != tt.tt_modes)
                (*tt.tt_setmodes)(tt.tt_nmodes);
        if (!tt.tt_insert)
                H19_SETINSERT(1);
        ttputc(c);
        if (tt.tt_insert)
                ICPAD();
        if (++tt.tt_col == NCOL)
                tt.tt_col = NCOL - 1;
}

void
h19_delchar(int n)
{
        while (--n >= 0)
                ttesc('N');
}

void
h19_scroll_down(int n)
{
        h19_move(NROW - 1, 0);
        while (--n >= 0)
                ttctrl('j');
}

void
h19_scroll_up(int n)
{
        h19_move(0, 0);
        while (--n >= 0)
                ttesc('I');
}

int
tt_h19(void)
{
        float cpms = (float) wwbaud / 10000;    /* char per ms */

        h19_msp10c = 10 / cpms;                 /* ms per 10 char */
        gen_VS = ttxgetstr("vs");
        gen_VE = ttxgetstr("ve");

        tt.tt_start = h19_start;
        tt.tt_end = h19_end;

        tt.tt_insline = h19_insline;
        tt.tt_delline = h19_delline;
        tt.tt_inschar = h19_inschar;
        tt.tt_delchar = h19_delchar;
        tt.tt_clreol = h19_clreol;
        tt.tt_clreos = h19_clreos;
        tt.tt_clear = h19_clear;
        tt.tt_move = h19_move;
        tt.tt_write = h19_write;
        tt.tt_putc = h19_putc;
        tt.tt_scroll_down = h19_scroll_down;
        tt.tt_scroll_up = h19_scroll_up;
        tt.tt_setmodes = h19_setmodes;

        tt.tt_ncol = NCOL;
        tt.tt_nrow = NROW;
        tt.tt_availmodes = WWM_REV|WWM_GRP;
        tt.tt_frame = h19_frame;
        return 0;
}