@nativescript/core/text/text-common.js

var _a, _b;
const Object_prototype_toString = {}.toString;
const ArrayBufferString = Object_prototype_toString.call(ArrayBuffer.prototype);
function decoderReplacer(encoded) {
    let codePoint = encoded.charCodeAt(0) << 24;
    const leadingOnes = Math.clz32(~codePoint) | 0;
    let endPos = 0;
    const stringLen = encoded.length | 0;
    let result = '';
    if (leadingOnes < 5 && stringLen >= leadingOnes) {
        codePoint = (codePoint << leadingOnes) >>> (24 + leadingOnes);
        for (endPos = 1; endPos < leadingOnes; endPos = (endPos + 1) | 0) {
            codePoint = (codePoint << 6) | (encoded.charCodeAt(endPos) & 0x3f) /*0b00111111*/;
        }
        if (codePoint <= 0xffff) {
            // BMP code point
            result += String.fromCharCode(codePoint);
        }
        else if (codePoint <= 0x10ffff) {
            // https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
            codePoint = (codePoint - 0x10000) | 0;
            result += String.fromCharCode(((codePoint >> 10) + 0xd800) | 0, // highSurrogate
            ((codePoint & 0x3ff) + 0xdc00) | 0 // lowSurrogate
            );
        }
        else {
            endPos = 0;
        } // to fill it in with INVALIDs
    }
    for (; endPos < stringLen; endPos = (endPos + 1) | 0) {
        result += '\ufffd';
    }
    return result;
}
function encoderReplacer(nonAsciiChars) {
    // make the UTF string into a binary UTF-8 encoded string
    let point = nonAsciiChars.charCodeAt(0) | 0;
    if (point >= 0xd800 && point <= 0xdbff) {
        const nextcode = nonAsciiChars.charCodeAt(1) | 0;
        if (nextcode !== nextcode) {
            // NaN because string is 1 code point long
            return String.fromCharCode(0xef /*11101111*/, 0xbf /*10111111*/, 0xbd /*10111101*/);
        }
        // https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
        if (nextcode >= 0xdc00 && nextcode <= 0xdfff) {
            point = (((point - 0xd800) << 10) + nextcode - 0xdc00 + 0x10000) | 0;
            if (point > 0xffff) {
                return String.fromCharCode((0x1e /*0b11110*/ << 3) | (point >>> 18), (0x2 /*0b10*/ << 6) | ((point >>> 12) & 0x3f) /*0b00111111*/, (0x2 /*0b10*/ << 6) | ((point >>> 6) & 0x3f) /*0b00111111*/, (0x2 /*0b10*/ << 6) | (point & 0x3f) /*0b00111111*/);
            }
        }
        else {
            return String.fromCharCode(0xef, 0xbf, 0xbd);
        }
    }
    if (point <= 0x007f) {
        return nonAsciiChars;
    }
    else if (point <= 0x07ff) {
        return String.fromCharCode((0x6 << 5) | (point >>> 6), (0x2 << 6) | (point & 0x3f));
    }
    else {
        return String.fromCharCode((0xe /*0b1110*/ << 4) | (point >>> 12), (0x2 /*0b10*/ << 6) | ((point >>> 6) & 0x3f) /*0b00111111*/, (0x2 /*0b10*/ << 6) | (point & 0x3f) /*0b00111111*/);
    }
}
export class TextDecoder {
    constructor() {
        this[_a] = 'TextDecoder';
    }
    get encoding() {
        return 'utf-8';
    }
    decode(input) {
        const buffer = ArrayBuffer.isView(input) ? input.buffer : input;
        if (Object_prototype_toString.call(buffer) !== ArrayBufferString) {
            throw Error("Failed to execute 'decode' on 'TextDecoder': The provided value is not of type '(ArrayBuffer or ArrayBufferView)'");
        }
        const inputAs8 = new Uint8Array(buffer);
        let resultingString = '';
        for (let index = 0, len = inputAs8.length | 0; index < len; index = (index + 32768) | 0) {
            resultingString += String.fromCharCode.apply(0, inputAs8.slice(index, (index + 32768) | 0));
        }
        return resultingString.replace(/[\xc0-\xff][\x80-\xbf]*/g, decoderReplacer);
    }
    toString() {
        return '[object TextDecoder]';
    }
}
_a = Symbol.toStringTag;
export class TextEncoder {
    constructor() {
        this[_b] = 'TextEncoder';
    }
    get encoding() {
        return 'utf-8';
    }
    encode(input = '') {
        // 0xc0 => 0b11000000; 0xff => 0b11111111; 0xc0-0xff => 0b11xxxxxx
        // 0x80 => 0b10000000; 0xbf => 0b10111111; 0x80-0xbf => 0b10xxxxxx
        const encodedString = input === undefined ? '' : ('' + input).replace(/[\x80-\uD7ff\uDC00-\uFFFF]|[\uD800-\uDBFF][\uDC00-\uDFFF]?/g, encoderReplacer);
        const len = encodedString.length | 0, result = new Uint8Array(len);
        for (let i = 0; i < len; i = (i + 1) | 0) {
            result[i] = encodedString.charCodeAt(i);
        }
        return result;
    }
    toString() {
        return '[object TextEncoder]';
    }
}
_b = Symbol.toStringTag;
//# sourceMappingURL=text-common.js.map