538 lines
15 KiB
Plaintext
538 lines
15 KiB
Plaintext
//
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// GNOConsole.mm
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// 2Term
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//
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// Created by Kelvin Sherlock on 7/9/2010.
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// Copyright 2010 __MyCompanyName__. All rights reserved.
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//
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#include <sys/ttydefaults.h>
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#import "GNOConsole.h"
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#include "OutputChannel.h"
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#include "Screen.h"
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/*
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* The GNO Console Driver.
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* this was gleaned from the source code.
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*
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* 0x00 n/a
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* 0x01 ^A - enable overstrike mode (IODP_gInsertFlag = 0)
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* 0x02 ^B - enable insert mode (IODP_gInsertFlag = 1)
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* 0x03 ^C - setport (IODP_GotoFlag = 3)
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* 0x04 n/a
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* 0x05 ^E - turn on cursor
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* 0x06 ^F - turn off cursor
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* 0x07 ^G - beep
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* 0x08 ^H - left arrow
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* 0x09 ^I - tab
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* 0x0a ^J - Line Feed (checks IODP_Scroll)
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* 0x0b ^K - clear EOP ???? up arrow???
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* 0x0c ^L - form feed - clear screen
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* 0x0d ^M - carriage return cursor = left margin
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* 0x0e ^N - inverse off - invert flag &= 0x7fff
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* 0x0f ^O - inverse on - invert flag |= 0x8000
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* 0x10 n/a
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* 0x11 ^Q - insert line
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* 0x12 ^R - Delete Line
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* 0x13 n/a
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* 0x14 n/a
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* 0x15 ^U - right arrow
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* 0x16 ^V - scroll down 1 line
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* 0x17 ^W - scroll up 1 line
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* 0x18 ^X - mouse text off.
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* 0x19 ^Y - cursor home.
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* 0x1a ^Z - clear line
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* 0x1b ^[ - mouse text on (inv flag | 0x4000)
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* 0x1c ^\ - increment IODP_CH (kill?)
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* 0x1d ^] -clear EOL
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* 0x1e ^^ - goto xy (IODP_GotoFlag = 1)
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* 0x1f ^_ - up arrow
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*
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* mouse text only applies if mouse text and inverse are on.
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* set port - 0x03 '[' left-margin right-margin top-margin bottom-margin [any printable character]
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*/
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/*
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this was gleaned from the kernel reference manual.
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The new console driver supports all the features of the old 80-column Pascal firmware,
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and adds a few extensions, with one exception - the codes that switched between 40 and
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80 columns modes are not supported. It is not compatible with the GS/OS '.console'
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driver. The control codes supported are as follows:
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Hex ASCII Action
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01 CTRL-A set cursor to flashing block
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02 CTRL-B set cursor to flashing underscore
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03 CTRL-C Begin "Set Text Window" sequence
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05 CTRL-E Cursor on
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06 CTRL-F Cursor off
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07 CTRL-G Perform FlexBeep
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08 CTRL-H Move left one character
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09 CTRL-I Tab
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0A CTRL-J Move down a line
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0B CTRL-K Clear to EOP (end of screen)
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0C CTRL-L Clear screen, home cursor
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0D CTRL-M Move cursor to left edge of line
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0E CTRL-N Normal text
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0F CTRL-O Inverse text
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11 CTRL-Q Insert a blank line at the current cursor position
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12 CTRL-R Delete the line at the current cursor position.
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15 CTRL-U Move cursor right one character
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16 CTRL-V Scroll display down one line
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17 CTRL-W Scroll display up one line
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18 CTRL-X Normal text, mousetext off
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19 CTRL-Y Home cursor
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1A CTRL-Z Clear entire line
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1B CTRL-[ MouseText on
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1C CTRL-\ Move cursor one character to the right
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1D CTRL-] Clear to end of line
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1E CTRL-^ Goto XY
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1F CTRL-_ Move up one line
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(Note: the Apple IIgs Firmware Reference incorrectly has codes 05 and 06 reversed. The
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codes listed here are correct for both GNO/ME and the Apple IIgs 80-column firmware)
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The Set Text Window sequence (begun by a $03 code) works as follows:
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CTRL-C '[' LEFT RIGHT TOP BOTTOM
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CTRL-C is of course hex $03, and '[' is the open bracket character ($5B). TOP, BOTTOM,
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LEFT, and RIGHT are single-byte ASCII values that represent the margin settings. Values
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for TOP and BOTTOM range from 0 to 23; LEFT and RIGHT range from 0 to 79. TOP must be
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numerically less than BOTTOM; LEFT must be less than RIGHT. Any impossible settings are
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ignored, and defaults are used instead. The extra '[' in the sequence helps prevent the
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screen from becoming confused in the event that random data is printed to the screen.
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After a successful Set Text Window sequence, only the portion of the screen inside the
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'window' will be accessible, and only the window will scroll; any text outside the
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window is not affected.
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*/
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%%{
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machine console;
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alphtype unsigned int;
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action nop {}
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action forward {
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if (cursor.x > window.maxX()-1) {
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cursor.x = window.minX();
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if (cursor.y >= window.maxY()-1) {
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screen->scrollUp(window);
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} else cursor.y++;
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}
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}
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arg1 = any ${ _scratch[0] = ((fc & 0x7f) - 32); };
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arg2 = any ${ _scratch[1] = ((fc & 0x7f) - 32); };
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arg3 = any ${ _scratch[2] = ((fc & 0x7f) - 32); };
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arg4 = any ${ _scratch[3] = ((fc & 0x7f) - 32); };
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main := (
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0x00 $nop
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| 0x01 ${
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// CTRL(A)
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// set cursor to flashing block.
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_cursorType = Screen::CursorTypeBlock;
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screen->setCursorType(_cursorType);
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}
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| 0x02 ${
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// CTRL('B')
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// set cursor to flashing underscore.
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_cursorType = Screen::CursorTypeUnderscore;
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screen->setCursorType((Screen::CursorType)_cursorType);
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}
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| 0x03 '[' arg1 arg2 arg3 arg4 ${
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// CTRL('C'):
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// '[' left right top bottom
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// n.b. - 0, 79, 0, 23 is full screen.
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_scratch[0] = std::max(0, _scratch[0]);
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_scratch[2] = std::max(0, _scratch[2]);
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_scratch[1] = std::min(80-1, _scratch[1])+1;
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_scratch[3] = std::min(24-1, _scratch[3])+1;
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if (_scratch[1] <= _scratch[0]) _scratch[1] = 80;
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if (_scratch[3] <= _scratch[2]) _scratch[3] = 24;
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window = iRect(
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iPoint(_scratch[0], _scratch[2]),
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iPoint(_scratch[1], _scratch[3])
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);
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// move the cursor to the top left
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// gnome clamps the horizontal, doesn't adjust the vertical.
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//screen->setCursor(&_textPort, iPoint(0,0));
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if (cursor.x < _scratch[0]) cursor.x = _scratch[0];
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if (cursor.x >= _scratch[1]) cursor.x = _scratch[1] - 1;
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}
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| 0x04 $nop
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| 0x05 ${
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// CTRL('E'):
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// cursor on
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screen->setCursorType(_cursorType);
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}
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| 0x06 ${
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//CTRL('F'):
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//cursor off
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screen->setCursorType(Screen::CursorTypeNone);
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}
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| 0x07 ${
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//CTRL('G'):
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NSBeep();
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}
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| 0x08 ${
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// CTRL('H'):
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if (cursor.x == window.minX()) {
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cursor.x = window.maxX()-1;
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// go up, possibly scrolling.
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if (cursor.y != window.minY()) cursor.y--;
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}
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else cursor.x--;
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}
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| 0x09 ${
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// CTRL('I'):
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// tab
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cursor.x = (cursor.x + 8) & ~ 0x07;
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} $forward
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| 0x0a ${
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// CTRL('J'):
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// down 1 line.
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if (cursor.y >= window.maxY()-1) {
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screen->scrollUp(window);
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} else cursor.y++;
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}
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| 0x0b ${
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// CTRL('K'):
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// clear to end of screen
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iRect tmp;
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tmp.origin = cursor;
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tmp.size = iSize(window.size.width - cursor.x, 1);
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screen->eraseRect(tmp);
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tmp = window;
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tmp.origin.y = cursor.y+1;
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tmp.size.height -= cursor.y+1;
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screen->eraseRect(tmp);
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}
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| 0x0c ${
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// CTRL('L'):
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// clear screen, go home.
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screen->eraseRect(window);
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cursor = window.origin;
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}
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| 0x0d ${
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// CTRL('M'):
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// move to left edge.
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cursor.x = window.minX();
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}
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| 0x0e ${
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// CTRL('N'):
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// normal text.
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_context.clearFlagBit(Screen::FlagInverse);
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}
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| 0x0f ${
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// CTRL('O'):
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// inverse text.
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_context.setFlagBit(Screen::FlagInverse);
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}
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| 0x10 $nop
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| 0x11 ${
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// CTRL('Q'):
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// insert line.
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iRect tmp(iPoint(window.minX(), cursor.y), window.bottomRight());
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screen->scrollDown(tmp);
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}
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| 0x12 ${
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// CTRL('R'):
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// delete line
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iRect tmp(iPoint(window.minX(), cursor.y), window.bottomRight());
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screen->scrollUp(tmp);
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}
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| 0x13 $nop
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| 0x14 $nop
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| 0x15 $forward ${
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// CTRL('U'):
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// right arrow.
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cursor.x++;
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} $forward
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| 0x16 ${
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// CTRL('V'):
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// scroll down 1 line.
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screen->scrollDown(window);
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}
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| 0x17 ${
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// CTRL('W'):
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// scroll up 1 line.
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screen->scrollUp(window);
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}
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| 0x18 ${
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// CTRL('X'):
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//mouse text off
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_context.clearFlagBit(Screen::FlagMouseText);
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}
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| 0x19 ${
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// CTRL('Y'):
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// cursor home
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cursor.x = 0;
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cursor.y = 0;
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}
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| 0x1a ${
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// CTRL('Z'):
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// clear entire line
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iRect tmp;
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tmp.origin = iPoint(window.origin.x, cursor.y);
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tmp.size = iSize(window.size.width, 1);
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screen->eraseRect(tmp);
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}
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| 0x1b ${
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// CTRL('['):
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// mouse text on
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// inverse must also be on.
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_context.setFlagBit(Screen::FlagMouseText);
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}
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| 0x1c ${
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// CTRL('\\'):
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// move cursor 1 character to the right
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cursor.x++;
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}
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| 0x1d ${
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// CTRL(']'):
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// clear to end of line.
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iRect tmp;
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tmp.origin = cursor;
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tmp.size = iSize(window.size.width - cursor.x, 1);
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screen->eraseRect(tmp);
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}
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# hmmm ... embedded control characters seem to be processed as control characters...
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| 0x1e arg1 arg2 ${
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// CTRL('^'):
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// goto x y
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// goto xy does not respect the text window.
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// testing shows illegal value go to 0 for x, 23 for y.
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if (_scratch[0] >= 80) _scratch[0] = 0;
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if (_scratch[1] >= 24) _scratch[1] = 23;
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cursor = iPoint(_scratch[0], _scratch[1]);
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}
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| 0x1f ${
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// CTRL('_'):
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// move up 1 line
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if (cursor.y != window.minY()) cursor.y--;
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}
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| 0x20 .. 0x7f $forward ${
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screen->putc(fc, _context);
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cursor.x++;
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}
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| 0x80 .. 0xff $nop
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)* $err{ fgoto main; };
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write data;
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}%%
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@implementation GNOConsole
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+(void)load
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{
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[EmulatorManager registerClass: self];
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}
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+(NSString *)name
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{
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return @"GNO Console";
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}
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-(NSString *)name
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{
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return @"GNO Console";
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}
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-(const char *)termName
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{
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return "gno-console";
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}
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-(void)reset: (BOOL)hard
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{
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%%write init;
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_context.flags = 0;
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_cursorType = Screen::CursorTypeUnderscore;
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if (hard) {
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_context.window = iRect(0, 0, 80, 24);
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_context.cursor = iPoint(0,0);
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}
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}
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-(BOOL)resizable
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{
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return NO;
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}
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-(struct winsize)defaultSize
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{
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struct winsize ws = { 24, 80, 0, 0 };
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return ws;
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}
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-(void)initTerm: (struct termios *)term
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{
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// Control-U is used by the up-arrow key.
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term->c_cc[VKILL] = CTRL('X');
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}
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-(id)init
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{
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if ((self = [super init]))
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{
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[self reset: YES];
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}
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return self;
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}
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-(void)processData: (uint8_t *)data length: (size_t)length screen:(Screen *)screen output:(OutputChannel *)output
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{
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std::transform(data, data + length, data, [](uint8_t c){ return c & 0x7f; });
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const uint8_t *eof = nullptr;
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const uint8_t *p = data;
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const uint8_t *pe = data + length;
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iPoint &cursor = _context.cursor;
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iRect &window = _context.window;
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%%write exec;
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if (cursor.x == 80) screen->setCursor(iPoint(79, cursor.y));
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else screen->setCursor(cursor);
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}
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-(void)keyDown:(NSEvent *)event screen:(Screen *)screen output:(OutputChannel *)output
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{
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NSEventModifierFlags flags = [event modifierFlags];
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NSString *chars = [event charactersIgnoringModifiers];
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NSUInteger length = [chars length];
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for (unsigned i = 0; i < length; ++i)
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{
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unichar uc = [chars characterAtIndex: i];
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switch (uc)
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{
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case NSEnterCharacter:
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output->write(CTRL('M'));
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break;
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/*
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case NSDeleteCharacter:
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output->write(0x7f);
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break;
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*/
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case NSBackspaceCharacter:
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output->write(0x7f);
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break;
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case NSLeftArrowFunctionKey:
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output->write(CTRL('H'));
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break;
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case NSRightArrowFunctionKey:
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output->write(CTRL('U'));
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break;
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case NSUpArrowFunctionKey:
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output->write(CTRL('K'));
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break;
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case NSDownArrowFunctionKey:
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output->write(CTRL('J'));
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break;
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default:
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if (uc <= 0x7f)
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{
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char c = uc;
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if (flags & (NSShiftKeyMask | NSAlphaShiftKeyMask))
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{
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c = toupper(c);
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}
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if (flags & NSControlKeyMask)
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c = CTRL(c);
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output->write(c);
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}
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break;
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}
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}
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}
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@end
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