Clean up code and implement Base64 and ASCII

This commit is contained in:
Florine W. Dekker 2019-07-08 18:25:09 +02:00
parent 9f2ce94527
commit 53501eeef1
Signed by: FWDekker
GPG Key ID: B1B567AF58D6EE0F
1 changed files with 82 additions and 42 deletions

View File

@ -61,52 +61,92 @@
<script src="https://cdnjs.cloudflare.com/ajax/libs/big-integer/1.6.44/BigInteger.min.js"
integrity="sha256-es+ex6Oj344uak+VnCPyaHY2nzQkqhr7ByWVQgdjATA=" crossorigin="anonymous"></script>
<script>
const alphabet = "0123456789abcdef";
const updateAllInputs = newValue => {
for (const numberInput of $a(".numberInput"))
numberInput.value = newValue.toString(numberInput.getAttribute("data-base"), alphabet);
};
const createInput = (base, name) => {
const label = document.createElement("label");
label.setAttribute("for", `${name}Input`);
label.innerHTML = name;
const textarea = document.createElement("textarea");
textarea.id = `${name}Input`;
textarea.className = "numberInput";
textarea.setAttribute("data-base", base);
textarea.oninput = () => {
if (textarea.value === undefined || textarea.value === null)
return;
const inputAlphabet = alphabet.substring(0, base);
textarea.value = textarea.value.toLowerCase().replace(new RegExp("[^" + inputAlphabet + "]"), "");
updateAllInputs(bigInt(textarea.value, base));
};
return [label, textarea];
};
const addInput = (label, textarea) => {
const inputs = $("#inputs");
inputs.appendChild(label);
inputs.appendChild(textarea);
};
const generateInputs = () => {
const textareas = [["2", "Binary"], ["8", "Octal"], ["10", "Decimal"], ["16", "Hexadecimal"]];
for (const textarea of textareas) {
const elements = createInput(textarea[0], textarea[1]);
addInput(elements[0], elements[1]);
class NumeralSystem {
constructor(base, alphabet) {
this.base = base;
this.alphabet = alphabet;
}
$("#" + textareas[0][1] + "Input").focus();
decimalToBase(decimalNumber) {
return decimalNumber.toString(this.base, this.alphabet);
}
baseToDecimal(baseString) {
return bigInt(baseString, this.base, this.alphabet);
}
filterBaseString(baseString) {
return baseString.toLowerCase().replace(new RegExp("[^" + this.alphabet + "]"), "");
}
}
class AsciiNumeralSystem extends NumeralSystem {
constructor() {
let alphabet = "";
for (let i = 0; i < 256; i++)
alphabet += String.fromCharCode(i);
super(256, alphabet);
}
}
class NumeralSystemInput {
constructor(name, numeralSystem) {
this.name = name;
this.numeralSystem = numeralSystem;
this.label = document.createElement("label");
this.label.setAttribute("for", `${this.name}Input`);
this.label.innerHTML = this.name;
this.textarea = document.createElement("textarea");
this.textarea.id = `${this.name}Input`;
this.textarea.className = "numberInput";
this.textarea.oninput = () => {
if (this.textarea.value === undefined || this.textarea.value === null)
return;
this.textarea.value = this.numeralSystem.filterBaseString(this.textarea.value);
updateAllInputs(this.numeralSystem.baseToDecimal(this.textarea.value));
};
}
addToParent(parent) {
parent.appendChild(this.label);
parent.appendChild(this.textarea);
}
update(decimalNumber) {
this.textarea.value = this.numeralSystem.decimalToBase(decimalNumber);
}
}
const inputs = [
new NumeralSystemInput("Binary", new NumeralSystem(2, "01")),
new NumeralSystemInput("Octal", new NumeralSystem(8, "01234567")),
new NumeralSystemInput("Decimal", new NumeralSystem(10, "0123456789")),
new NumeralSystemInput("Hexadecimal", new NumeralSystem(16, "0123456789abcdef")),
new NumeralSystemInput("Base64", new NumeralSystem(64, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/")),
new NumeralSystemInput("ASCII", new AsciiNumeralSystem()),
];
const updateAllInputs = newValue => {
for (const input of inputs)
input.update(newValue);
};
doAfterLoad(() => generateInputs());
doAfterLoad(() => {
const inputParent = $("#inputs");
for (const input of inputs)
input.addToParent(inputParent);
inputs[0].textarea.focus();
});
</script>
</body>
</html>