dify-sdk
Version:
dify-sdk
64 lines • 2.47 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
var CompatibleTextDecoder = /** @class */ (function () {
function CompatibleTextDecoder(encoding) {
if (encoding === void 0) { encoding = 'utf-8'; }
this.encoding = encoding.toLowerCase();
this._buffer = [];
}
CompatibleTextDecoder.prototype.decode = function (input, options) {
var _this = this;
if (options === void 0) { options = {}; }
var uint8Array = input instanceof ArrayBuffer ? new Uint8Array(input) : input;
uint8Array.forEach(function (bf) {
_this._buffer.push(bf);
});
if (!options.stream) {
var str = String.fromCharCode.apply(String, this._buffer);
this._buffer = [];
return this.encoding === 'utf-8' ? decodeURIComponent(escape(str)) : str;
}
return ''; // 流模式下暂不返回
};
return CompatibleTextDecoder;
}());
/**
* 流式解码函数
* @param input 二进制数据块
* @param options 配置项 { encoding: 编码格式, stream: 是否流模式 }
* @returns 解码后的字符串
*/
function streamDecode(input, options) {
if (options === void 0) { options = {}; }
var _a = options.encoding, encoding = _a === void 0 ? 'utf-8' : _a, _b = options.stream, stream = _b === void 0 ? false : _b;
// 1. 环境检测与Polyfill注入
if (typeof TextDecoder === 'undefined') {
globalThis.TextDecoder = CompatibleTextDecoder;
}
// 2. 解码逻辑
var decoder = new TextDecoder(encoding);
try {
return decoder.decode(input, { stream: stream });
}
catch (e) {
console.warn('流式解码失败，降级处理:', e);
// 降级方案：手动维护缓冲区
if (!streamDecode._buffer) {
streamDecode._buffer = new Uint8Array(0);
}
var inputArray = input instanceof ArrayBuffer ? new Uint8Array(input) : input;
var tmp = new Uint8Array(streamDecode._buffer.length + inputArray.length);
tmp.set(streamDecode._buffer, 0);
tmp.set(inputArray, streamDecode._buffer.length);
streamDecode._buffer = tmp;
return stream ? '' : decoder.decode(streamDecode._buffer);
}
}
function decode(input, options) {
if (options === void 0) { options = {}; }
return streamDecode(input, options);
}
exports.default = {
decode: decode,
};
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