47 lines
1 KiB
JavaScript
47 lines
1 KiB
JavaScript
const EventEmitter = require("events");
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const Keys = {
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up: Buffer.from([0x1B, 0x5B, 0x41]),
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down: Buffer.from([0x1B, 0x5B, 0x42]),
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right: Buffer.from([0x1B, 0x5B, 0x43]),
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left: Buffer.from([0x1B, 0x5B, 0x44]),
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left: Buffer.from([0x1B, 0x5B, 0x44]),
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tab: Buffer.from([0x07]),
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enter: Buffer.from([0x0A]),
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space: Buffer.from([0x20]),
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};
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function isPrint(char) {
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if(char >= 'a' && char <= 'z') return true;
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if(char >= 'A' && char <= 'Z') return true;
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if(char >= '0' && char <= '9') return true;
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if(char >= '[' && char <= '_') return true;
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if(char >= '{' && char <= '~') return true;
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return false;
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}
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class Input extends EventEmitter {
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constructor(stream) {
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super();
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stream.on("data", this.handle.bind(this));
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this.stream = stream;
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}
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handle(data) {
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for(let i in Keys) {
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if(data.equals(Keys[i])) this.emit(i);
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}
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const key = data.toString();
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if(isPrint(key)) this.emit(key);
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this.emit("data", data);
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}
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hijack() {
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this.stream.setRawMode(true);
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}
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close() {
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this.stream?.setRawMode(false);
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}
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}
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module.exports = Input;
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