// // PTSE.mm // 2Term // // Created by Kelvin Sherlock on 7/9/2010. // Copyright 2010 __MyCompanyName__. All rights reserved. // #include #import "PTSE.h" #include "OutputChannel.h" #include "Screen.h" @implementation PTSE enum { StateText, StateDCAX, StateDCAY, StateRepeatChar, StateRepeatCount, StateTone1, StateTone2, StateToneDuration }; +(void)load { [EmulatorManager registerClass: self]; } +(NSString *)name { return @"Proterm Special Emulation"; } -(NSString *)name { return @"Proterm Special Emulation"; } -(const char *)termName { return "proterm-special"; } -(void)reset { _state = StateText; } -(BOOL)resizable { return NO; } -(struct winsize)defaultSize { struct winsize ws = { 24, 80, 0, 0 }; return ws; } -(void)initTerm: (struct termios *)term { // Control-U is used by the up-arrow key. term->c_cc[VKILL] = CTRL('X'); } -(void)processCharacter:(uint8_t)c screen:(Screen *)screen output:(OutputChannel *)output { if (_state == StateText) { switch (c) { case CTRL('N'): //Set: inverse off, mousetext off. screen->setFlag(Screen::FlagNormal); break; case CTRL('O'): //Set: inverse on, mousetext off. screen->setFlag(Screen::FlagInverse); break; case CTRL('P'): //Set inverse off, mousetext on. screen->setFlag(Screen::FlagMouseText | Screen::FlagInverse); break; case CTRL('H'): //Move cursor left one character. screen->decrementX(); break; case CTRL('U'): //Move cursor right one character. screen->incrementX(); break; case CTRL('K'): //Move cursor up one line. screen->decrementY(); break; case CTRL('J'): //Move cursor down one line. //screen->incrementY(); screen->lineFeed(); break; case CTRL('I'): //Move cursor to next tab stop (every 8 chars). screen->tabTo((screen->x() + 8) & ~0x07); break; case CTRL('A'): //Move cursor to beginning of line. screen->setX(0); break; case CTRL('B'): //Move cursor to end of line. screen->setX(screen->width() - 1); break; case CTRL('X'): //Move cursor to upper-left corner. screen->setCursor(0, 0); break; case CTRL('^'): // CONTROL-^, X + 32, Y + 32 //Position cursor to the X, Y coordinates. _state = StateDCAX; break; case CTRL('M'): //screen->lineFeed(); screen->setX(0); break; case CTRL('D'): //Delete current character (under cursor). // TODO -- does this shift the rest of the row? screen->deletec(); break; case CTRL('F'): //Insert space at cursor. screen->insertc(' '); break; case CTRL('Z'): //Delete current line. screen->deleteLine(screen->y()); break; case CTRL('V'): //Insert blank like. // TODO -- verify if the line is before or after the current line, // TODO -- verify if x/y change // TODO -- verify scrolling behavior. screen->insertLine(screen->y()); break; case CTRL('Y'): //Clear to end of line. screen->eraseLine(); break; case CTRL('W'): //Clear to end of screen. screen->eraseScreen(); break; case CTRL('L'): //Clear the screen (and home cursor) screen->setCursor(0, 0); screen->eraseScreen(); break; case CTRL('E'): //Inquire if using ProTERM Special Emulation /* * When you send out [CONTROL-E] to a caller using ProTERM * Special, the caller’s ProTERM will send back [CONTROL-“]”] * (ASCII code 29). This allows a BBS to transparently * detect the use of PSE. */ output->write(29); break; case CTRL('R'): //CONTROL-R, character, count //Display character, count times. /* * This allows a three character code to be used to display * multiple characters. For example, to display a window frame, * it is necessary to show the top and bottom borders which are * long lines of the same character (dashes, underlines, etc.). * To draw a 64-character line consisting of equal signs, send * [CONTROL-R = @] where “@” is the ASCII code for 64. */ _state = StateRepeatChar; break; case CTRL('G'): //Sound the Bell. NSBeep(); break; case CTRL('T'): //Sound single/dual-tone for duration. /* * The tone command has two forms. The first invokes the single-tone * generator, which produces relatively pure tones. The second * invokes the dual-tone generator, which produces some rather * interesting sounds. The three parameters, tone1, tone2, and * duration, can all take values from 1 through 127. There is * currently no known translation between pitch/duration values * and actual frequencies/times. */ //NB - parsed but ignored, for now. _state = StateTone1; break; default: if (c >= 0x20 && c < 0x7f) { screen->putc(c); } break; } return; } switch (_state) { case StateDCAX: _dca.x = c - 32; _state = StateDCAY; break; case StateDCAY: _dca.y = c - 32; screen->setCursor(_dca); _state = StateText; break; case StateRepeatChar: _repeatChar = c; _state = StateRepeatCount; break; case StateRepeatCount: for (unsigned i = 0; i < c; ++i) { screen->putc(_repeatChar); } _state = StateText; break; case StateTone1: _state = StateTone2; break; case StateTone2: // CONTROL-A indicates same as tone1. _state = StateToneDuration; break; case StateToneDuration: _state = StateText; break; } } -(void)keyDown:(NSEvent *)event screen:(Screen *)screen output:(OutputChannel *)output { unsigned flags = [event modifierFlags]; NSString *chars = [event charactersIgnoringModifiers]; unsigned length = [chars length]; for (unsigned i = 0; i < length; ++i) { unichar uc = [chars characterAtIndex: i]; switch (uc) { case NSEnterCharacter: output->write(CTRL('M')); break; case NSDeleteCharacter: output->write(0x7f); break; // backspace and left arrow use the same code, alas. case NSBackspaceCharacter: output->write(0x7f); break; case NSLeftArrowFunctionKey: output->write(CTRL('H')); break; case NSRightArrowFunctionKey: output->write(CTRL('U')); break; case NSUpArrowFunctionKey: output->write(CTRL('K')); break; case NSDownArrowFunctionKey: output->write(CTRL('J')); break; default: if (uc <= 0x7f) { char c = uc; if (flags & NSControlKeyMask) c = CTRL(c); output->write(c); } break; } } } @end