初始化

node_modules/encoding-sniffer/dist/esm/index.js

@@ -0,0 +1,63 @@
+import { Transform } from "node:stream";
+import iconv from "iconv-lite";
+import { Sniffer, getEncoding } from "./sniffer.js";
+/**
+ * Sniff the encoding of a buffer, then decode it.
+ *
+ * @param buffer Buffer to be decoded
+ * @param options Options for the sniffer
+ * @returns The decoded buffer
+ */
+export function decodeBuffer(buffer, options = {}) {
+    return iconv.decode(buffer, getEncoding(buffer, options));
+}
+/**
+ * Decodes a stream of buffers into a stream of strings.
+ *
+ * Reads the first 1024 bytes and passes them to the sniffer. Once an encoding
+ * has been determined, it passes all data to iconv-lite's stream and outputs
+ * the results.
+ */
+export class DecodeStream extends Transform {
+    constructor(options) {
+        var _a;
+        super({ decodeStrings: false, encoding: "utf-8" });
+        this.buffers = [];
+        /** The iconv decode stream. If it is set, we have read more than `options.maxBytes` bytes. */
+        this.iconv = null;
+        this.readBytes = 0;
+        this.sniffer = new Sniffer(options);
+        this.maxBytes = (_a = options === null || options === void 0 ? void 0 : options.maxBytes) !== null && _a !== void 0 ? _a : 1024;
+    }
+    _transform(chunk, _encoding, callback) {
+        if (this.readBytes < this.maxBytes) {
+            this.sniffer.write(chunk);
+            this.readBytes += chunk.length;
+            if (this.readBytes < this.maxBytes) {
+                this.buffers.push(chunk);
+                callback();
+                return;
+            }
+        }
+        this.getIconvStream().write(chunk, callback);
+    }
+    getIconvStream() {
+        if (this.iconv) {
+            return this.iconv;
+        }
+        const stream = iconv.decodeStream(this.sniffer.encoding);
+        stream.on("data", (chunk) => this.push(chunk, "utf-8"));
+        stream.on("end", () => this.push(null));
+        this.iconv = stream;
+        for (const buffer of this.buffers) {
+            stream.write(buffer);
+        }
+        this.buffers.length = 0;
+        return stream;
+    }
+    _flush(callback) {
+        this.getIconvStream().end(callback);
+    }
+}
+export { getEncoding } from "./sniffer.js";
+//# sourceMappingURL=index.js.map