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feat(http): better binary support & XHR support (#7707)
* feat(http): binary upload support * feat(http): better binary support & XHR support * fix: linting issue * chore: moved files from old place to the new one * chore: Updated NativeScript.api.md * feat(http): support both ByteBuffer and String Co-authored-by: Vasil Trifonov <v.trifonov@gmail.com>
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committed by
Vasil Trifonov

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a311a922b5
commit
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112
nativescript-core/text/text-common.ts
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112
nativescript-core/text/text-common.ts
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@ -0,0 +1,112 @@
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const Object_prototype_toString = ({}).toString;
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const ArrayBufferString = Object_prototype_toString.call(ArrayBuffer.prototype);
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function decoderReplacer(encoded) {
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var codePoint = encoded.charCodeAt(0) << 24;
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var leadingOnes = Math.clz32(~codePoint) | 0;
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var endPos = 0, stringLen = encoded.length | 0;
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var result = "";
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if (leadingOnes < 5 && stringLen >= leadingOnes) {
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codePoint = (codePoint << leadingOnes) >>> (24 + leadingOnes);
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for (endPos = 1; endPos < leadingOnes; endPos = endPos + 1 | 0) {
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codePoint = (codePoint << 6) | (encoded.charCodeAt(endPos) & 0x3f/*0b00111111*/);
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}
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if (codePoint <= 0xFFFF) { // BMP code point
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result += String.fromCharCode(codePoint);
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} else if (codePoint <= 0x10FFFF) {
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// https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
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codePoint = codePoint - 0x10000 | 0;
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result += String.fromCharCode(
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(codePoint >> 10) + 0xD800 | 0, // highSurrogate
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(codePoint & 0x3ff) + 0xDC00 | 0 // lowSurrogate
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);
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} else { endPos = 0; } // to fill it in with INVALIDs
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}
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for (; endPos < stringLen; endPos = endPos + 1 | 0) { result += "\ufffd"; }
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return result;
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}
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function encoderReplacer(nonAsciiChars) {
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// make the UTF string into a binary UTF-8 encoded string
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var point = nonAsciiChars.charCodeAt(0) | 0;
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if (point >= 0xD800 && point <= 0xDBFF) {
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var nextcode = nonAsciiChars.charCodeAt(1) | 0;
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if (nextcode !== nextcode) { // NaN because string is 1 code point long
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return String.fromCharCode(0xef/*11101111*/, 0xbf/*10111111*/, 0xbd/*10111101*/);
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}
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// https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
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if (nextcode >= 0xDC00 && nextcode <= 0xDFFF) {
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point = ((point - 0xD800) << 10) + nextcode - 0xDC00 + 0x10000 | 0;
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if (point > 0xffff) {
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return String.fromCharCode(
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(0x1e /*0b11110*/ << 3) | (point >>> 18),
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(0x2 /*0b10*/ << 6) | ((point >>> 12) & 0x3f/*0b00111111*/),
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(0x2 /*0b10*/ << 6) | ((point >>> 6) & 0x3f/*0b00111111*/),
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(0x2 /*0b10*/ << 6) | (point & 0x3f/*0b00111111*/)
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);
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}
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} else { return String.fromCharCode(0xef, 0xbf, 0xbd); }
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}
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if (point <= 0x007f) { return nonAsciiChars; }
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else if (point <= 0x07ff) {
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return String.fromCharCode((0x6 << 5) | (point >>> 6), (0x2 << 6) | (point & 0x3f));
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} else {
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return String.fromCharCode(
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(0xe /*0b1110*/ << 4) | (point >>> 12),
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(0x2 /*0b10*/ << 6) | ((point >>> 6) & 0x3f/*0b00111111*/),
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(0x2 /*0b10*/ << 6) | (point & 0x3f/*0b00111111*/)
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);
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}
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}
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export class TextDecoder {
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public get encoding() {
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return "utf-8";
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}
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public decode(input: BufferSource): string {
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const buffer = ArrayBuffer.isView(input) ? input.buffer : input;
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if (Object_prototype_toString.call(buffer) !== ArrayBufferString) {
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throw Error("Failed to execute 'decode' on 'TextDecoder': The provided value is not of type '(ArrayBuffer or ArrayBufferView)'");
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}
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let inputAs8 = new Uint8Array(buffer);
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let resultingString = "";
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for (let index = 0, len = inputAs8.length | 0; index < len; index = index + 32768 | 0) {
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resultingString += String.fromCharCode.apply(0, inputAs8.slice(index, index + 32768 | 0));
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}
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return resultingString.replace(/[\xc0-\xff][\x80-\xbf]*/g, decoderReplacer);
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}
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public toString() {
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return "[object TextDecoder]";
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}
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[Symbol.toStringTag] = "TextDecoder";
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}
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export class TextEncoder {
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public get encoding() {
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return "utf-8";
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}
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public encode(input: string = ""): Uint8Array {
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// 0xc0 => 0b11000000; 0xff => 0b11111111; 0xc0-0xff => 0b11xxxxxx
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// 0x80 => 0b10000000; 0xbf => 0b10111111; 0x80-0xbf => 0b10xxxxxx
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const encodedString = input === undefined ? "" : ("" + input).replace(/[\x80-\uD7ff\uDC00-\uFFFF]|[\uD800-\uDBFF][\uDC00-\uDFFF]?/g, encoderReplacer);
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const len = encodedString.length | 0, result = new Uint8Array(len);
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for (let i = 0; i < len; i = i + 1 | 0) {
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result[i] = encodedString.charCodeAt(i);
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}
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return result;
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}
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public toString() {
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return "[object TextEncoder]";
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}
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[Symbol.toStringTag] = "TextEncoder";
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}
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