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| function fauxTerm(config) {
var term = config.el || document.getElementById('term');
var termBuffer = config.initialMessage || '';
var lineBuffer = config.initialLine || '';
var cwd = config.cwd || "~/";
var tags = config.tags || ['red', 'blue', 'white', 'bold'];
var processCommand = config.cmd || false;
var maxBufferLength = config.maxBufferLength || 8192;
var commandHistory = [];
var currentCommandIndex = -1;
var maxCommandHistory = config.maxCommandHistory || 100;
var autoFocus = config.autoFocus || false;
var coreCmds = {
"clear": clear
};
var fauxInput = document.createElement('textarea');
fauxInput.className = "faux-input";
document.body.appendChild(fauxInput);
if ( autoFocus ) {
fauxInput.focus();
}
function getLeader() {
return cwd + "$ ";
}
function renderTerm() {
var bell = '<span class="bell"></span>';
var ob = termBuffer + getLeader() + lineBuffer;
term.innerHTML = ob;
term.innerHTML += bell;
term.scrollTop = term.scrollHeight;
}
function writeToBuffer(str) {
termBuffer += str;
//Stop the buffer getting massive.
if ( termBuffer.length > maxBufferLength ) {
var diff = termBuffer.length - maxBufferLength;
termBuffer = termBuffer.substr(diff);
}
}
function renderStdOut(str) {
var i = 0, max = tags.length;
for ( i; i<max; i++ ) {
var start = new RegExp('{' + tags[i] + '}', 'g');
var end = new RegExp('{/' + tags[i] + '}', 'g');
str = str.replace(start, '<span class="' + tags[i] + '">');
str = str.replace(end, '</span>');
}
return str;
}
function clear(argv, argc) {
termBuffer = "";
return "";
}
function isCoreCommand(line) {
if ( coreCmds.hasOwnProperty(line) ) {
return true;
}
return false;
}
function coreCommand(argv, argc) {
var cmd = argv[0];
return coreCmds[cmd](argv, argc);
}
function processLine() {
//Dispatch command
var stdout, line = lineBuffer, argv = line.split(" "), argc = argv.length;
var cmd = argv[0];
lineBuffer += "\n";
writeToBuffer( getLeader() + lineBuffer );
lineBuffer = "";
//If it's not a blank line.
if ( cmd !== "" ) {
//If the command is not registered by the core.
if ( !isCoreCommand(cmd) ) {
//User registered command
if ( processCommand ) {
stdout = processCommand(argv,argc);
} else {
stdout = "{white}{bold}" + cmd + "{/bold}{/white}: command not found\n";
}
} else {
//Execute a core command
stdout = coreCommand(argv,argc);
}
//If an actual command happened.
if ( stdout === false ) {
stdout = "{white}{bold}" + cmd + "{/bold}{/white}: command not found\n";
}
stdout = renderStdOut(stdout);
writeToBuffer(stdout);
addLineToHistory(line);
}
renderTerm();
}
function addLineToHistory(line) {
commandHistory.unshift( line );
currentCommandIndex = -1;
if ( commandHistory.length > maxCommandHistory ) {
console.log('reducing command history size');
console.log(commandHistory.length);
var diff = commandHistory.length - maxCommandHistory;
commandHistory.splice(commandHistory.length -1, diff);
console.log(commandHistory.length);
}
}
function isInputKey(keyCode) {
var inputKeyMap = [32,190,192,189,187,220,221,219,222,186,188,191];
if ( inputKeyMap.indexOf(keyCode) > -1 ) {
return true;
}
return false;
}
function toggleCommandHistory(direction) {
var max = commandHistory.length -1;
var newIndex = currentCommandIndex + direction;
if ( newIndex < -1 ) newIndex = -1;
if ( newIndex >= commandHistory.length) newIndex = commandHistory.length -1;
if ( newIndex !== currentCommandIndex ) {
currentCommandIndex = newIndex;
}
if ( newIndex > -1 ) {
//Change line to something from history.
lineBuffer = commandHistory[newIndex];
} else {
//Blank line...
lineBuffer = "";
}
}
function acceptInput(e) {
e.preventDefault();
fauxInput.value = "";
if ( e.keyCode >= 48 && e.keyCode <= 90 || isInputKey(e.keyCode) ) {
if (! e.ctrlKey ) {
//Character input
lineBuffer += e.key;
} else {
//Hot key input? I.e Ctrl+C
}
} else if ( e.keyCode === 13 ) {
processLine();
} else if ( e.keyCode === 9 ) {
lineBuffer += "\t";
} else if ( e.keyCode === 38 ) {
toggleCommandHistory(1);
} else if ( e.keyCode === 40 ) {
toggleCommandHistory(-1);
}
else if ( e.key === "Backspace" ) {
lineBuffer = lineBuffer.substr(0, lineBuffer.length -1);
}
renderTerm();
}
term.addEventListener('click', function(e){
fauxInput.focus();
term.classList.add('term-focus');
});
fauxInput.addEventListener('keydown', acceptInput);
fauxInput.addEventListener('blur', function(e){
term.classList.remove('term-focus');
});
renderTerm();
}
var myTerm = new fauxTerm({
el: document.getElementById("term"),
cwd: "guest@dam.pe:/",
initialMessage: "Welcome to dam.pe!\n",
/*
tags: ['red', 'blue', 'white', 'bold'],
maxBufferLength: 8192,
maxCommandHistory: 500,
cmd: function(argv, argc) {
console.log(argv);
return false;
}*/
});
var mySecondTerm = new fauxTerm({
el: document.getElementById("term2"),
cwd: "guest@dam.pe:/",
initialMessage: "Welcome to dam.pe! 2\n",
/*
autoFocus: false,
tags: ['red', 'blue', 'white', 'bold'],
maxBufferLength: 8192,
maxCommandHistory: 500,
cmd: function(argv, argc) {
console.log(argv);
return false;
}*/
}); |
