F.W. Dekker 2 years ago
parent
commit
6ad2b95410
Signed by: FWDekker GPG Key ID: B1B567AF58D6EE0F
  1. 78
      index.html

78
index.html

@ -61,6 +61,15 @@
<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 stringReplaceAt = function (str, index, replacement) {
return str.substr(0, index) + replacement + str.substr(index + replacement.length);
};
const stringReplaceAll = function (str, target, replacement) {
return str.split(target).join(replacement);
};
class NumeralSystem {
constructor(base, alphabet, caseSensitive) {
this.base = base;
@ -78,7 +87,9 @@
}
filterBaseString(baseString) {
return baseString.replace(new RegExp("[^" + this.alphabet + "]"), "");
// Regex from https://stackoverflow.com/a/3561711/
const regexSafeAlphabet = this.alphabet.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
return baseString.replace(new RegExp(`[^${regexSafeAlphabet}]`), "");
}
}
@ -114,14 +125,75 @@
}
}
class Base64NumeralSystemInput extends NumeralSystemInput {
static defaultAlphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
static dropdownOptions = {"Standard": ['+', '/'], "Filename": ['-', '_'], "IMAP": ['+', ',']};
constructor(name) {
super(name, new NumeralSystem(64, Base64NumeralSystemInput.defaultAlphabet, true));
this.dropdownLabel = document.createElement("label");
this.dropdownLabel.setAttribute("for", `${this.name}Dropdown`);
this.dropdownLabel.innerHTML = "Character set";
this.dropdownLabel.classList.add("label-inline");
this.dropdown = document.createElement("select");
this.dropdown.id = `${this.name}Dropdown`;
this.dropdown.onchange = () => {
const selectedOption = Base64NumeralSystemInput.dropdownOptions[this.dropdown.value];
this.setLastDigits(selectedOption[0], selectedOption[1]);
};
this.dropdownDiv = document.createElement("div");
this.dropdownDiv.classList.add("float-right");
this.options =
Object.keys(Base64NumeralSystemInput.dropdownOptions).map(key => {
const option = document.createElement("option");
option.value = key;
option.text = key + ": " + Base64NumeralSystemInput.dropdownOptions[key].join("");
return option;
});
}
setLastDigits(c62, c63) {
const oc62 = this.numeralSystem.alphabet[62];
const oc63 = this.numeralSystem.alphabet[63];
this.numeralSystem.alphabet =
stringReplaceAt(stringReplaceAt(this.numeralSystem.alphabet, 62, c62), 63, c63);
this.textarea.value =
stringReplaceAll(stringReplaceAll(this.textarea.value, oc62, c62), oc63, c63);
}
addToParent(parent) {
this.dropdownDiv.appendChild(this.dropdownLabel);
this.options.forEach(option => this.dropdown.appendChild(option));
this.dropdownDiv.appendChild(this.dropdown);
parent.appendChild(this.dropdownDiv);
parent.appendChild(this.label);
parent.appendChild(this.textarea);
}
}
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", caseSensitive = false)),
new NumeralSystemInput("Base64", new NumeralSystem(64, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/", caseSensitive = true)),
new NumeralSystemInput("ASCII", new NumeralSystem(256, new Array(256).fill(0).map((_, it) => String.fromCharCode(it)).join(""), caseSensitive = true)),
new Base64NumeralSystemInput("Base64"),
new NumeralSystemInput(
"ASCII",
new NumeralSystem(
256,
new Array(256).fill(0).map((_, it) => String.fromCharCode(it)).join(""),
caseSensitive = true
)
),
];
const updateAllInputs = newValue => {

Loading…
Cancel
Save