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import { EMPTY_STRING } from "./constants";
/**
* String preparation function. In a future here will be realization of algorithm from RFC4518
* @param inputString JavaScript string. As soon as for each ASN.1 string type we have a specific
* transformation function here we will work with pure JavaScript string
* @returns Formatted string
*/
export function stringPrep(inputString: string): string {
//#region Initial variables
let isSpace = false;
let cutResult = EMPTY_STRING;
//#endregion
const result = inputString.trim(); // Trim input string
//#region Change all sequence of SPACE down to SPACE char
for (let i = 0; i < result.length; i++) {
if (result.charCodeAt(i) === 32) {
if (isSpace === false)
isSpace = true;
} else {
if (isSpace) {
cutResult += " ";
isSpace = false;
}
cutResult += result[i];
}
}
//#endregion
return cutResult.toLowerCase();
}