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Hare Sudhan 2024-02-24 22:59:51 -05:00
parent c4e7c41a6e
commit ce30989adc
693 changed files with 51226 additions and 26671 deletions
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38
src/core/lib/LS47.mjs
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@ -14,7 +14,7 @@ const tiles = [];
*/
export function initTiles() {
for (let i = 0; i < 49; i++)
tiles.push([letters.charAt(i), [Math.floor(i/7), i % 7]]);
tiles.push([letters.charAt(i), [Math.floor(i / 7), i % 7]]);
}
/**
@ -27,21 +27,19 @@ export function initTiles() {
*/
function rotateDown(key, col, n) {
const lines = [];
for (let i = 0; i < 7; i++)
lines.push(key.slice(i*7, (i + 1) * 7));
for (let i = 0; i < 7; i++) lines.push(key.slice(i * 7, (i + 1) * 7));
const lefts = [];
let mids = [];
const rights = [];
lines.forEach((element) => {
lefts.push(element.slice(0, col));
mids.push(element.charAt(col));
rights.push(element.slice(col+1));
rights.push(element.slice(col + 1));
});
n = (7 - n % 7) % 7;
n = (7 - (n % 7)) % 7;
mids = mids.slice(n).concat(mids.slice(0, n));
let result = "";
for (let i = 0; i < 7; i++)
result += lefts[i] + mids[i] + rights[i];
for (let i = 0; i < 7; i++) result += lefts[i] + mids[i] + rights[i];
return result;
}
@ -55,8 +53,13 @@ function rotateDown(key, col, n) {
*/
function rotateRight(key, row, n) {
const mid = key.slice(row * 7, (row + 1) * 7);
n = (7 - n % 7) % 7;
return key.slice(0, 7 * row) + mid.slice(n) + mid.slice(0, n) + key.slice(7 * (row + 1));
n = (7 - (n % 7)) % 7;
return (
key.slice(0, 7 * row) +
mid.slice(n) +
mid.slice(0, n) +
key.slice(7 * (row + 1))
);
}
/**
@ -67,8 +70,7 @@ function rotateRight(key, row, n) {
*/
function findIx(letter) {
for (let i = 0; i < tiles.length; i++)
if (tiles[i][0] === letter)
return tiles[i][1];
if (tiles[i][0] === letter) return tiles[i][1];
throw new OperationError("Letter " + letter + " is not included in LS47");
}
@ -98,8 +100,7 @@ function checkKey(key) {
if (key.length !== letters.length)
throw new OperationError("Wrong key size");
const counts = new Array();
for (let i = 0; i < letters.length; i++)
counts[letters.charAt(i)] = 0;
for (let i = 0; i < letters.length; i++) counts[letters.charAt(i)] = 0;
for (const elem of letters) {
if (letters.indexOf(elem) === -1)
throw new OperationError("Letter " + elem + " not in LS47");
@ -116,10 +117,9 @@ function checkKey(key) {
* @param {string} letter
* @returns {object}
*/
function findPos (key, letter) {
function findPos(key, letter) {
const index = key.indexOf(letter);
if (index >= 0 && index < 49)
return [Math.floor(index/7), index%7];
if (index >= 0 && index < 49) return [Math.floor(index / 7), index % 7];
throw new OperationError("Letter " + letter + " is not in the key");
}
@ -131,7 +131,7 @@ function findPos (key, letter) {
* @returns {string}
*/
function findAtPos(key, coord) {
return key.charAt(coord[1] + (coord[0] * 7));
return key.charAt(coord[1] + coord[0] * 7);
}
/**
@ -157,7 +157,7 @@ function addPos(a, b) {
function subPos(a, b) {
const asub = a[0] - b[0];
const bsub = a[1] - b[1];
return [asub - (Math.floor(asub/7) * 7), bsub - (Math.floor(bsub/7) * 7)];
return [asub - Math.floor(asub / 7) * 7, bsub - Math.floor(bsub / 7) * 7];
}
/**
@ -226,7 +226,7 @@ export function encryptPad(key, plaintext, signature, paddingSize) {
for (let i = 0; i < paddingSize; i++) {
padding += letters.charAt(Math.floor(Math.random() * letters.length));
}
return encrypt(key, padding+plaintext+"---"+signature);
return encrypt(key, padding + plaintext + "---" + signature);
}
/**