@hiki9/rich-domain
Version:
Rich Domain is a library that provides a set of tools to help you build complex business logic in NodeJS using Domain Driven Design principles.
52 lines • 1.94 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ConverterAnyBase = void 0;
class ConverterAnyBase {
constructor(srcAlphabet, dstAlphabet) {
if (!srcAlphabet || !dstAlphabet || !srcAlphabet.length || !dstAlphabet.length) {
throw new Error('Bad alphabet');
}
this.srcAlphabet = srcAlphabet;
this.dstAlphabet = dstAlphabet;
}
isValid(number) {
var i = 0;
for (; i < number.length; ++i) {
if (this.srcAlphabet.indexOf(number[i]) === -1) {
return false;
}
}
return true;
}
convert(number) {
let i, divide, newlen, numberMap = {}, fromBase = this.srcAlphabet.length, toBase = this.dstAlphabet.length, length = number.length, result = typeof number === 'string' ? '' : [];
if (!this.isValid(number)) {
throw new Error('Number "' + number + '" contains of non-alphabetic digits (' + this.srcAlphabet + ')');
}
if (this.srcAlphabet === this.dstAlphabet) {
return number;
}
for (i = 0; i < length; i++) {
numberMap[i] = this.srcAlphabet.indexOf(number[i]);
}
do {
divide = 0;
newlen = 0;
for (i = 0; i < length; i++) {
divide = divide * fromBase + numberMap[i];
if (divide >= toBase) {
numberMap[newlen++] = parseInt((divide / toBase), 10);
divide = divide % toBase;
}
else if (newlen > 0) {
numberMap[newlen++] = 0;
}
}
length = newlen;
result = this.dstAlphabet.slice(divide, divide + 1).concat(result);
} while (newlen !== 0);
return result;
}
}
exports.ConverterAnyBase = ConverterAnyBase;
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