mirror of https://github.com/dirtbags/moth.git
72 lines
1.3 KiB
JavaScript
72 lines
1.3 KiB
JavaScript
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function tx(element, text, bps) {
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var drawTimer;
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var sp = false;
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function draw() {
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c = text[0];
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if ((c == " ") || (c == "\n")) {
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sp = true;
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c = " ";
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} else if (sp) {
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c = " " + c;
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sp = false;
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}
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element.textContent += c;
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text = text.substr(1);
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if (text == "") {
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clearInterval(drawTimer);
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return;
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}
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}
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// N81 uses 1 stop bit, and 1 parity bit.
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// That works out to exactly 10 bits per byte.
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msec = 10000 / bps;
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drawTimer = setInterval(draw, msec);
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draw();
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}
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function Terminal(target, bps) {
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bps = bps || 1200;
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var outq = [];
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var outTimer;
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function drawElement() {
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var next = outq.shift();
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var out = document.createElement(next[0]);
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target.appendChild(out);
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tx(out, next[1], bps);
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if (outq.length == 0) {
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clearInterval(outTimer);
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}
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}
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this.enqueue = function(tag, txt) {
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outq.push([tag, txt]);
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if (! outTimer) {
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outTimer = setInterval(drawElement, 150);
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}
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}
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this.par = function(txt) {
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this.enqueue("p", txt);
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}
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this.pre = function(txt) {
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this.enqueue("pre", txt);
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}
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}
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//
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// Usage:
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//
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// var e = Terminal(document.getElementById("output"));
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// e.output("This is a paragraph. It has sentences.");
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// e.output("This is a second paragraph.");
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//
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