BSD 4.4 Lite Usr.bin Sources

1 files changed, 483 insertions, 0 deletions

diff --git a/usr.bin/window/ttzapple.c b/usr.bin/window/ttzapple.c
new file mode 100644
index 0000000..a285712
--- /dev/null
+++ b/usr.bin/window/ttzapple.c
@@ -0,0 +1,483 @@
+/*
+ * 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;
+}