morse code and ip lookup

morse/index.js

@@ -0,0 +1,146 @@
+const morseElem = document.getElementById('translate-to-morse');
+const textElem = document.getElementById('translate-to-text');
+const soundElem = document.getElementById('play-sound');
+const exportElem = document.getElementById('export');
+
+const morseCode = {
+	'A': '.-',    'B': '-...',  'C': '-.-.',  'D': '-..',   'E': '.', 'F': '..-.',  'G': '--.',   'H': '....',  'I': '..',    'J': '.---', 'K': '-.-',   'L': '.-..',  'M': '--',    'N': '-.',    'O': '---', 'P': '.--.',  'Q': '--.-',  'R': '.-.',   'S': '...',   'T': '-', 'U': '..-',   'V': '...-',  'W': '.--',   'X': '-..-',  'Y': '-.--', 'Z': '--..',  '1': '.----', '2': '..---', '3': '...--', '4': '....-', '5': '.....', '6': '-....', '7': '--...', '8': '---..', '9': '----.', '0': '-----', ' ': '/'
+};
+
+const morseToText = Object.fromEntries(Object.entries(morseCode).map(([key, value]) => [value, key]));
+
+function translateToMorse() {
+	const text = document.getElementById('textInput').value.toUpperCase();
+	const morse = text.split('').map(char => morseCode[char] || '').join(' ');
+	document.getElementById('morseOutput').value = morse;
+}
+
+function translateToText() {
+	const morse = document.getElementById('morseOutput').value.trim();
+	const text = morse.split(' ').map(code => morseToText[code] || '').join('');
+	document.getElementById('textInput').value = text;
+}
+
+function playMorseSound() {
+	const morse = document.getElementById('morseOutput').value.trim();
+	let audioContext = new (window.AudioContext || window.webkitAudioContext)();
+	let dotDuration = 200;
+	let dashDuration = dotDuration * 3;
+	let gapDuration = dotDuration; 
+
+	function playTone(freq, duration, volume) {
+		const oscillator = audioContext.createOscillator();
+		const gainNode = audioContext.createGain();
+		oscillator.connect(gainNode);
+		gainNode.connect(audioContext.destination);
+		oscillator.type = 'sine';
+		oscillator.frequency.setValueAtTime(freq, audioContext.currentTime);
+		gainNode.gain.setValueAtTime(volume, audioContext.currentTime);
+		oscillator.start();
+		oscillator.stop(audioContext.currentTime + duration / 1000);
+	}
+
+	let position = 0;
+	function playMorseCode() {
+		if (position < morse.length) {
+			const symbol = morse[position];
+
+			if (symbol === '.') {
+				playTone(1000, dotDuration, 0.1);
+				position++;
+				setTimeout(playMorseCode, dotDuration + gapDuration);
+			} else if (symbol === '-') {
+				playTone(1000, dashDuration, 0.1);
+				position++;
+				setTimeout(playMorseCode, dashDuration + gapDuration);
+			} else if (symbol === ' ') {
+				position++;
+				setTimeout(playMorseCode, gapDuration);
+			}
+		}
+	}
+
+	playMorseCode();
+}
+
+function exportSound() {
+    const morse = document.getElementById('morseOutput').value.trim();
+    let dotDuration = 200;
+    let dashDuration = dotDuration * 3;
+    let gapDuration = dotDuration;
+
+    let sampleRate = 44100;
+    let samples = [];
+
+    function addSilence(duration) {
+        let count = (sampleRate * duration) / 1000;
+        for (let i = 0; i < count; i++) {
+            samples.push(0);
+        }
+    }
+
+    function addTone(freq, duration) {
+        let count = (sampleRate * duration) / 1000;
+        for (let i = 0; i < count; i++) {
+            let t = i / sampleRate;
+            samples.push(Math.sin(2 * Math.PI * freq * t));
+        }
+    }
+
+    for (let symbol of morse) {
+        if (symbol === '.') {
+            addTone(1000, dotDuration);
+            addSilence(gapDuration);
+        } else if (symbol === '-') {
+            addTone(1000, dashDuration);
+            addSilence(gapDuration);
+        } else if (symbol === ' ') {
+            addSilence(gapDuration);
+        }
+    }
+
+    const buffer = new ArrayBuffer(44 + samples.length * 2);
+    const view = new DataView(buffer);
+
+    function writeString(offset, string) {
+        for (let i = 0; i < string.length; i++) {
+            view.setUint8(offset + i, string.charCodeAt(i));
+        }
+    }
+
+	// i have no idea what this shit is or how it works, but it does :rofl:
+    writeString(0, 'RIFF');
+    view.setUint32(4, 36 + samples.length * 2, true);
+    writeString(8, 'WAVE');
+    writeString(12, 'fmt ');
+    view.setUint32(16, 16, true);
+    view.setUint16(20, 1, true);
+    view.setUint16(22, 1, true);
+    view.setUint32(24, sampleRate, true);
+    view.setUint32(28, sampleRate * 2, true);
+    view.setUint16(32, 2, true);
+    view.setUint16(34, 16, true);
+    writeString(36, 'data');
+    view.setUint32(40, samples.length * 2, true);
+
+    for (let i = 0; i < samples.length; i++) {
+        let s = Math.max(-1, Math.min(1, samples[i]));
+        view.setInt16(44 + i * 2, s * 32767, true);
+    }
+
+    const blob = new Blob([view], { type: 'audio/wav' });
+    const url = URL.createObjectURL(blob);
+    const a = document.createElement('a');
+    a.href = url;
+    a.download = 'morse-code.wav';
+    a.click();
+}
+
+
+morseElem.addEventListener('click', translateToMorse);
+
+textElem.addEventListener('click', translateToText);
+
+soundElem.addEventListener('click', playMorseSound);
+
+exportElem.addEventListener('click', exportSound);