484 lines
8.5 KiB
C
484 lines
8.5 KiB
C
|
/*
|
||
|
|
* Copyright (c) 1989, 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. All advertising materials mentioning features or use of this software
|
||
|
|
* must display the following acknowledgement:
|
||
|
|
* This product includes software developed by the University of
|
||
|
|
* California, Berkeley and its contributors.
|
||
|
|
* 4. 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef lint
|
||
|
|
static char sccsid[] = "@(#)ttzapple.c 8.1 (Berkeley) 6/6/93";
|
||
|
|
#endif /* not lint */
|
||
|
|
|
||
|
|
#include "ww.h"
|
||
|
|
#include "tt.h"
|
||
|
|
#include "char.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
zz|zapple|perfect apple:\
|
||
|
|
:am:pt:co#80:li#24:le=^H:nd=^F:up=^K:do=^J:\
|
||
|
|
:ho=\E0:ll=\E1:cm=\E=%+ %+ :ch=\E<%+ :cv=\E>%+ :\
|
||
|
|
:cl=\E4:ce=\E2:cd=\E3:rp=\E@%.%+ :\
|
||
|
|
:so=\E+:se=\E-:\
|
||
|
|
:dc=\Ec:DC=\EC%+ :ic=\Ei:IC=\EI%+ :\
|
||
|
|
:al=\Ea:AL=\EA%+ :dl=\Ed:DL=\ED%+ :\
|
||
|
|
:sf=\Ef:SF=\EF%+ :sr=\Er:SR=\ER%+ :cs=\E?%+ %+ :\
|
||
|
|
:is=\E-\ET :
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define NCOL 80
|
||
|
|
#define NROW 24
|
||
|
|
#define TOKEN_MAX 32
|
||
|
|
|
||
|
|
extern short gen_frame[];
|
||
|
|
|
||
|
|
/* for error correction */
|
||
|
|
int zz_ecc;
|
||
|
|
int zz_lastc;
|
||
|
|
|
||
|
|
/* for checkpointing */
|
||
|
|
int zz_sum;
|
||
|
|
|
||
|
|
zz_setmodes(new)
|
||
|
|
{
|
||
|
|
if (new & WWM_REV) {
|
||
|
|
if ((tt.tt_modes & WWM_REV) == 0)
|
||
|
|
ttesc('+');
|
||
|
|
} else
|
||
|
|
if (tt.tt_modes & WWM_REV)
|
||
|
|
ttesc('-');
|
||
|
|
tt.tt_modes = new;
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_insline(n)
|
||
|
|
{
|
||
|
|
if (n == 1)
|
||
|
|
ttesc('a');
|
||
|
|
else {
|
||
|
|
ttesc('A');
|
||
|
|
ttputc(n + ' ');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_delline(n)
|
||
|
|
{
|
||
|
|
if (n == 1)
|
||
|
|
ttesc('d');
|
||
|
|
else {
|
||
|
|
ttesc('D');
|
||
|
|
ttputc(n + ' ');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
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) {
|
||
|
|
same_row:
|
||
|
|
if ((x = col - tt.tt_col) == 0)
|
||
|
|
return;
|
||
|
|
if (col == 0) {
|
||
|
|
ttctrl('m');
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
switch (x) {
|
||
|
|
case 2:
|
||
|
|
ttctrl('f');
|
||
|
|
case 1:
|
||
|
|
ttctrl('f');
|
||
|
|
goto out;
|
||
|
|
case -2:
|
||
|
|
ttctrl('h');
|
||
|
|
case -1:
|
||
|
|
ttctrl('h');
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
if ((col & 7) == 0 && x > 0 && x <= 16) {
|
||
|
|
ttctrl('i');
|
||
|
|
if (x > 8)
|
||
|
|
ttctrl('i');
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
ttesc('<');
|
||
|
|
ttputc(col + ' ');
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
if (tt.tt_col == col) {
|
||
|
|
switch (row - tt.tt_row) {
|
||
|
|
case 2:
|
||
|
|
ttctrl('j');
|
||
|
|
case 1:
|
||
|
|
ttctrl('j');
|
||
|
|
goto out;
|
||
|
|
case -2:
|
||
|
|
ttctrl('k');
|
||
|
|
case -1:
|
||
|
|
ttctrl('k');
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
if (col == 0) {
|
||
|
|
if (row == 0)
|
||
|
|
goto home;
|
||
|
|
if (row == NROW - 1)
|
||
|
|
goto ll;
|
||
|
|
}
|
||
|
|
ttesc('>');
|
||
|
|
ttputc(row + ' ');
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
if (col == 0) {
|
||
|
|
if (row == 0) {
|
||
|
|
home:
|
||
|
|
ttesc('0');
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
if (row == tt.tt_row + 1) {
|
||
|
|
/*
|
||
|
|
* Do newline first to match the sequence
|
||
|
|
* for scroll down and return
|
||
|
|
*/
|
||
|
|
ttctrl('j');
|
||
|
|
ttctrl('m');
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
if (row == NROW - 1) {
|
||
|
|
ll:
|
||
|
|
ttesc('1');
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/* favor local motion for better compression */
|
||
|
|
if (row == tt.tt_row + 1) {
|
||
|
|
ttctrl('j');
|
||
|
|
goto same_row;
|
||
|
|
}
|
||
|
|
if (row == tt.tt_row - 1) {
|
||
|
|
ttctrl('k');
|
||
|
|
goto same_row;
|
||
|
|
}
|
||
|
|
ttesc('=');
|
||
|
|
ttputc(' ' + row);
|
||
|
|
ttputc(' ' + col);
|
||
|
|
out:
|
||
|
|
tt.tt_col = col;
|
||
|
|
tt.tt_row = row;
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_start()
|
||
|
|
{
|
||
|
|
ttesc('T');
|
||
|
|
ttputc(TOKEN_MAX + ' ');
|
||
|
|
ttesc('U');
|
||
|
|
ttputc('!');
|
||
|
|
zz_ecc = 1;
|
||
|
|
zz_lastc = -1;
|
||
|
|
ttesc('v');
|
||
|
|
ttflush();
|
||
|
|
zz_sum = 0;
|
||
|
|
zz_setscroll(0, NROW - 1);
|
||
|
|
zz_clear();
|
||
|
|
zz_setmodes(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_reset()
|
||
|
|
{
|
||
|
|
zz_setscroll(0, NROW - 1);
|
||
|
|
tt.tt_modes = WWM_REV;
|
||
|
|
zz_setmodes(0);
|
||
|
|
tt.tt_col = tt.tt_row = -10;
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_end()
|
||
|
|
{
|
||
|
|
ttesc('T');
|
||
|
|
ttputc(' ');
|
||
|
|
ttesc('U');
|
||
|
|
ttputc(' ');
|
||
|
|
zz_ecc = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_clreol()
|
||
|
|
{
|
||
|
|
ttesc('2');
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_clreos()
|
||
|
|
{
|
||
|
|
ttesc('3');
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_clear()
|
||
|
|
{
|
||
|
|
ttesc('4');
|
||
|
|
tt.tt_col = tt.tt_row = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_insspace(n)
|
||
|
|
{
|
||
|
|
if (n == 1)
|
||
|
|
ttesc('i');
|
||
|
|
else {
|
||
|
|
ttesc('I');
|
||
|
|
ttputc(n + ' ');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_delchar(n)
|
||
|
|
{
|
||
|
|
if (n == 1)
|
||
|
|
ttesc('c');
|
||
|
|
else {
|
||
|
|
ttesc('C');
|
||
|
|
ttputc(n + ' ');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_scroll_down(n)
|
||
|
|
{
|
||
|
|
if (n == 1)
|
||
|
|
if (tt.tt_row == NROW - 1)
|
||
|
|
ttctrl('j');
|
||
|
|
else
|
||
|
|
ttesc('f');
|
||
|
|
else {
|
||
|
|
ttesc('F');
|
||
|
|
ttputc(n + ' ');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_scroll_up(n)
|
||
|
|
{
|
||
|
|
if (n == 1)
|
||
|
|
ttesc('r');
|
||
|
|
else {
|
||
|
|
ttesc('R');
|
||
|
|
ttputc(n + ' ');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_setscroll(top, bot)
|
||
|
|
{
|
||
|
|
ttesc('?');
|
||
|
|
ttputc(top + ' ');
|
||
|
|
ttputc(bot + ' ');
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
ttputc(0x80);
|
||
|
|
ttputc(t + 1);
|
||
|
|
s[n - 1] |= 0x80;
|
||
|
|
ttwrite(s, n);
|
||
|
|
s[n - 1] &= ~0x80;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*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;
|
||
|
|
}
|
||
|
|
ttputc(t + 0x81);
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_rint(p, n)
|
||
|
|
char *p;
|
||
|
|
{
|
||
|
|
register i;
|
||
|
|
register char *q;
|
||
|
|
|
||
|
|
if (!zz_ecc)
|
||
|
|
return n;
|
||
|
|
for (i = n, q = p; --i >= 0;) {
|
||
|
|
register c = (unsigned char) *p++;
|
||
|
|
|
||
|
|
if (zz_lastc == 0) {
|
||
|
|
switch (c) {
|
||
|
|
case 0:
|
||
|
|
*q++ = 0;
|
||
|
|
zz_lastc = -1;
|
||
|
|
break;
|
||
|
|
case 1: /* start input ecc */
|
||
|
|
zz_ecc = 2;
|
||
|
|
zz_lastc = -1;
|
||
|
|
wwnreadstat++;
|
||
|
|
break;
|
||
|
|
case 2: /* ack checkpoint */
|
||
|
|
tt.tt_ack = 1;
|
||
|
|
zz_lastc = -1;
|
||
|
|
wwnreadack++;
|
||
|
|
break;
|
||
|
|
case 3: /* nack checkpoint */
|
||
|
|
tt.tt_ack = -1;
|
||
|
|
zz_lastc = -1;
|
||
|
|
wwnreadnack++;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
zz_lastc = c;
|
||
|
|
wwnreadec++;
|
||
|
|
}
|
||
|
|
} else if (zz_ecc == 1) {
|
||
|
|
if (c)
|
||
|
|
*q++ = c;
|
||
|
|
else
|
||
|
|
zz_lastc = 0;
|
||
|
|
} else {
|
||
|
|
if (zz_lastc < 0) {
|
||
|
|
zz_lastc = c;
|
||
|
|
} else if (zz_lastc == c) {
|
||
|
|
*q++ = zz_lastc;
|
||
|
|
zz_lastc = -1;
|
||
|
|
} else {
|
||
|
|
wwnreadec++;
|
||
|
|
zz_lastc = c;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return q - (p - n);
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_checksum(p, n)
|
||
|
|
register char *p;
|
||
|
|
register n;
|
||
|
|
{
|
||
|
|
while (--n >= 0) {
|
||
|
|
register c = *p++ & 0x7f;
|
||
|
|
c ^= zz_sum;
|
||
|
|
zz_sum = c << 1 | c >> 11 & 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_compress(flag)
|
||
|
|
{
|
||
|
|
if (flag)
|
||
|
|
tt.tt_checksum = 0;
|
||
|
|
else
|
||
|
|
tt.tt_checksum = zz_checksum;
|
||
|
|
}
|
||
|
|
|
||
|
|
zz_checkpoint()
|
||
|
|
{
|
||
|
|
static char x[] = { ctrl('['), 'V', 0, 0 };
|
||
|
|
|
||
|
|
zz_checksum(x, sizeof x);
|
||
|
|
ttesc('V');
|
||
|
|
ttputc(' ' + (zz_sum & 0x3f));
|
||
|
|
ttputc(' ' + (zz_sum >> 6 & 0x3f));
|
||
|
|
ttflush();
|
||
|
|
zz_sum = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
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_reset = zz_reset;
|
||
|
|
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_padc = TT_PADC_NONE;
|
||
|
|
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;
|
||
|
|
tt.tt_compress = zz_compress;
|
||
|
|
tt.tt_checksum = zz_checksum;
|
||
|
|
tt.tt_checkpoint = zz_checkpoint;
|
||
|
|
tt.tt_reset = zz_reset;
|
||
|
|
tt.tt_rint = zz_rint;
|
||
|
|
return 0;
|
||
|
|
}
|