Zazama / node-id3

import iconv = require('iconv-lite')

import { TextEncoding } from './definitions/Encoding'

export function stringToEncodedBuffer(

    value: string,

    encoding: TextEncoding

) {

    return iconv.encode(

        value,

        convertTextEncodingToIconEncoding(encoding)

    )

}

export function bufferToDecodedString(

    buffer: Buffer,

    encoding: TextEncoding

) {

    return iconv.decode(

        buffer,

        convertTextEncodingToIconEncoding(encoding)

    ).replace(/\0/g, '')

}

const TO_ICON_ENCODING = {

    [TextEncoding.ISO_8859_1]: 'ISO-8859-1',

    [TextEncoding.UTF_16_WITH_BOM]: 'UTF-16',

    [TextEncoding.UTF_16_BE]: 'UTF-16BE',

    [TextEncoding.UTF_8]: 'UTF-8'

} satisfies Record<TextEncoding, string>

export function validateEncoding(encoding: number): TextEncoding {

    if (encoding in TO_ICON_ENCODING) {

        return encoding as TextEncoding

    }

    throw new RangeError(`Unknown encoding value ${encoding}`)

}

function convertTextEncodingToIconEncoding(encoding: TextEncoding) {

    return TO_ICON_ENCODING[validateEncoding(encoding)]

}