jtc-utils/mjs/lib/charset/utf16be.mjs

Utilities for Japanese Traditional Companies

import { StandardDecoder, } from "./charset.mjs";
class Utf16beCharset {
    get name() {
        return "utf-16be";
    }
    createDecoder(options) {
        return new StandardDecoder("utf-16be", options);
    }
    createEncoder(options) {
        return new Utf16beEncoder();
    }
    isUnicode() {
        return true;
    }
    isEbcdic() {
        return false;
    }
}
class Utf16beEncoder {
    canEncode(str) {
        return true;
    }
    encode(str, options) {
        const out = new Uint8Array(str.length * 2);
        const limit = options?.limit ?? Number.POSITIVE_INFINITY;
        for (let i = 0; i < str.length; i++) {
            const cp = str.charCodeAt(i);
            out[i * 2] = (cp >>> 8) & 0xff;
            out[i * 2 + 1] = cp & 0xff;
        }
        if (out.length > limit) {
            return out.subarray(0, Math.floor(limit / 2) * 2);
        }
        return out;
    }
}
export const utf16be = new Utf16beCharset();