usr/src/usr.bin/window/ttzapple.c

/*
 * Copyright (c) 1989 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
static char sccsid[] = "@(#)ttzapple.c  3.5 (Berkeley) %G%";
#endif /* not lint */

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

/*
zz|zapple|unorthodox apple:\
        :am:pt:co#80:li#24:le=^H:nd=^F:up=^K:do=^J:\
        :ho=^[0:ll=^[1:cm=^]%+ %+ =:ch=^\%+ <:cv=^\%+ >:\
        :cl=^[4:ce=^[2:cd=^[3:rp=^]%.%+ @:\
        :so=^[+:se=^[-:\
        :dc=^[c:DC=^\%+ C:ic=^[i:IC=^\%+ I:\
        :al=^[a:AL=^\%+ A:dl=^[d:DL=^\%+ D:\
        :sf=^[f:SF=^\%+ F:sr=^[r:SR=^\%+ R:cs=^]%+ %+ ?:
*/

#define NCOL            80
#define NROW            24
#define TOKEN_MAX       32

#define pc(c)   ttputc(c)
#define esc()   pc(ctrl('['))
#define esc1()  pc(ctrl('\\'))
#define esc2()  pc(ctrl(']'))

extern short gen_frame[];

zz_setmodes(new)
{
        if (new & WWM_REV) {
                if ((tt.tt_modes & WWM_REV) == 0) {
                        esc();
                        pc('+');
                }
        } else
                if (tt.tt_modes & WWM_REV) {
                        esc();
                        pc('-');
                }
        tt.tt_modes = new;
}

zz_insline(n)
{
        if (n == 0) {
                esc();
                pc('a');
        } else {
                esc1();
                pc(n + ' ');
                pc('A');
        }
}

zz_delline(n)
{
        if (n == 0) {
                esc();
                pc('d');
        } else {
                esc1();
                pc(n + ' ');
                pc('D');
        }
}

zz_putc(c)
        char c;
{
        if (tt.tt_nmodes != tt.tt_modes)
                zz_setmodes(tt.tt_nmodes);
        ttputc(c);
        if (++tt.tt_col == NCOL)
                tt.tt_col = 0, tt.tt_row++;
}

zz_write(p, n)
        register char *p;
        register n;
{
        if (tt.tt_nmodes != tt.tt_modes)
                zz_setmodes(tt.tt_nmodes);
        ttwrite(p, n);
        tt.tt_col += n;
        if (tt.tt_col == NCOL)
                tt.tt_col = 0, tt.tt_row++;
}

zz_move(row, col)
        register row, col;
{
        register x;

        if (tt.tt_row == row) {
                if ((x = col - tt.tt_col) == 0)
                        return;
                if (col == 0) {
                        pc('\r');
                        goto out;
                }
                switch (x) {
                case 2:
                        pc(ctrl('f'));
                case 1:
                        pc(ctrl('f'));
                        goto out;
                case -2:
                        pc('\b');
                case -1:
                        pc('\b');
                        goto out;
                }
                if (col & 7 == 0 && x > 0 && x <= 16) {
                        pc('\t');
                        if (x > 8)
                                pc('\t');
                        goto out;
                }
                esc1();
                pc(col + ' ');
                pc('<');
                goto out;
        }
        if (tt.tt_col == col) {
                switch (row - tt.tt_row) {
                case 2:
                        pc('\n');
                case 1:
                        pc('\n');
                        goto out;
                case -2:
                        pc(ctrl('k'));
                case -1:
                        pc(ctrl('k'));
                        goto out;
                }
                if (col == 0) {
                        if (row == 0)
                                goto home;
                        if (row == NROW - 1)
                                goto ll;
                }
                esc1();
                pc(row + ' ');
                pc('>');
                goto out;
        }
        if (col == 0) {
                if (row == 0) {
home:
                        esc();
                        pc('0');
                        goto out;
                }
                if (row == tt.tt_row + 1) {
                        pc('\r');
                        pc('\n');
                        goto out;
                }
                if (row == NROW - 1) {
ll:
                        esc();
                        pc('1');
                        goto out;
                }
        }
        esc2();
        pc(' ' + row);
        pc(' ' + col);
        pc('=');
out:
        tt.tt_col = col;
        tt.tt_row = row;
}

zz_start()
{
        zz_setmodes(0);
        zz_setscroll(0, NROW - 1);
        zz_clear();
        esc1();
        pc(TOKEN_MAX + ' ');
        pc('T');
}

zz_end()
{
        esc1();
        pc(' ');
        pc('T');
}

zz_clreol()
{
        esc();
        pc('2');
}

zz_clreos()
{
        esc();
        pc('3');
}

zz_clear()
{
        esc();
        pc('4');
        tt.tt_col = tt.tt_row = 0;
}

zz_insspace(n)
{
        if (n != 1) {
                esc1();
                pc(n + ' ');
                pc('I');
        } else {
                esc();
                pc('i');
        }
}

zz_delchar(n)
{
        if (n != 1) {
                esc1();
                pc(n + ' ');
                pc('C');
        } else {
                esc();
                pc('c');
        }
}

zz_scroll_down(n)
{
        if (n != 1) {
                esc1();
                pc(n + ' ');
                pc('F');
        } else if (tt.tt_row == NROW - 1)
                pc('\n');
        else {
                esc();
                pc('f');
        }
}

zz_scroll_up(n)
{
        if (n == 1) {
                esc();
                pc('r');
        } else {
                esc1();
                pc(n + ' ');
                pc('R');
        }
}

zz_setscroll(top, bot)
{
        esc2();
        pc(top + ' ');
        pc(bot + ' ');
        pc('?');
        tt.tt_scroll_top = top;
        tt.tt_scroll_bot = bot;
}

int zz_debug = 0;

zz_set_token(t, s, n)
        char *s;
{
        if (tt.tt_nmodes != tt.tt_modes)
                zz_setmodes(tt.tt_nmodes);
        if (zz_debug) {
                char buf[100];
                zz_setmodes(WWM_REV);
                (void) sprintf(buf, "%02x=", t);
                ttputs(buf);
                tt.tt_col += 3;
        }
        pc(0x80);
        pc(t + 1);
        s[n - 1] |= 0x80;
        ttwrite(s, n);
        s[n - 1] &= ~0x80;
        tt.tt_col += n;
        if (tt.tt_col == NCOL)
                tt.tt_col = 0, tt.tt_row++;
}

/*ARGSUSED*/
zz_put_token(t, s, n)
        char *s;
{
        if (tt.tt_nmodes != tt.tt_modes)
                zz_setmodes(tt.tt_nmodes);
        if (zz_debug) {
                char buf[100];
                zz_setmodes(WWM_REV);
                (void) sprintf(buf, "%02x>", t);
                ttputs(buf);
                tt.tt_col += 3;
        }
        pc(t + 0x81);
        tt.tt_col += n;
        if (tt.tt_col == NCOL)
                tt.tt_col = 0, tt.tt_row++;
}

tt_zapple()
{
        tt.tt_insspace = zz_insspace;
        tt.tt_delchar = zz_delchar;
        tt.tt_insline = zz_insline;
        tt.tt_delline = zz_delline;
        tt.tt_clreol = zz_clreol;
        tt.tt_clreos = zz_clreos;
        tt.tt_scroll_down = zz_scroll_down;
        tt.tt_scroll_up = zz_scroll_up;
        tt.tt_setscroll = zz_setscroll;
        tt.tt_availmodes = WWM_REV;
        tt.tt_wrap = 1;
        tt.tt_retain = 0;
        tt.tt_ncol = NCOL;
        tt.tt_nrow = NROW;
        tt.tt_start = zz_start;
        tt.tt_end = zz_end;
        tt.tt_write = zz_write;
        tt.tt_putc = zz_putc;
        tt.tt_move = zz_move;
        tt.tt_clear = zz_clear;
        tt.tt_setmodes = zz_setmodes;
        tt.tt_frame = gen_frame;
        tt.tt_ntoken = 127;
        tt.tt_set_token = zz_set_token;
        tt.tt_put_token = zz_put_token;
        tt.tt_token_min = 1;
        tt.tt_token_max = TOKEN_MAX;
        tt.tt_set_token_cost = 2;
        tt.tt_put_token_cost = 1;
        return 0;
}