415gotit

node_modules/@msgpack/msgpack/dist.cjs/utils/utf8.cjs

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.utf8Count = utf8Count;
+exports.utf8EncodeJs = utf8EncodeJs;
+exports.utf8EncodeTE = utf8EncodeTE;
+exports.utf8Encode = utf8Encode;
+exports.utf8DecodeJs = utf8DecodeJs;
+exports.utf8DecodeTD = utf8DecodeTD;
+exports.utf8Decode = utf8Decode;
+function utf8Count(str) {
+    const strLength = str.length;
+    let byteLength = 0;
+    let pos = 0;
+    while (pos < strLength) {
+        let value = str.charCodeAt(pos++);
+        if ((value & 0xffffff80) === 0) {
+            // 1-byte
+            byteLength++;
+            continue;
+        }
+        else if ((value & 0xfffff800) === 0) {
+            // 2-bytes
+            byteLength += 2;
+        }
+        else {
+            // handle surrogate pair
+            if (value >= 0xd800 && value <= 0xdbff) {
+                // high surrogate
+                if (pos < strLength) {
+                    const extra = str.charCodeAt(pos);
+                    if ((extra & 0xfc00) === 0xdc00) {
+                        ++pos;
+                        value = ((value & 0x3ff) << 10) + (extra & 0x3ff) + 0x10000;
+                    }
+                }
+            }
+            if ((value & 0xffff0000) === 0) {
+                // 3-byte
+                byteLength += 3;
+            }
+            else {
+                // 4-byte
+                byteLength += 4;
+            }
+        }
+    }
+    return byteLength;
+}
+function utf8EncodeJs(str, output, outputOffset) {
+    const strLength = str.length;
+    let offset = outputOffset;
+    let pos = 0;
+    while (pos < strLength) {
+        let value = str.charCodeAt(pos++);
+        if ((value & 0xffffff80) === 0) {
+            // 1-byte
+            output[offset++] = value;
+            continue;
+        }
+        else if ((value & 0xfffff800) === 0) {
+            // 2-bytes
+            output[offset++] = ((value >> 6) & 0x1f) | 0xc0;
+        }
+        else {
+            // handle surrogate pair
+            if (value >= 0xd800 && value <= 0xdbff) {
+                // high surrogate
+                if (pos < strLength) {
+                    const extra = str.charCodeAt(pos);
+                    if ((extra & 0xfc00) === 0xdc00) {
+                        ++pos;
+                        value = ((value & 0x3ff) << 10) + (extra & 0x3ff) + 0x10000;
+                    }
+                }
+            }
+            if ((value & 0xffff0000) === 0) {
+                // 3-byte
+                output[offset++] = ((value >> 12) & 0x0f) | 0xe0;
+                output[offset++] = ((value >> 6) & 0x3f) | 0x80;
+            }
+            else {
+                // 4-byte
+                output[offset++] = ((value >> 18) & 0x07) | 0xf0;
+                output[offset++] = ((value >> 12) & 0x3f) | 0x80;
+                output[offset++] = ((value >> 6) & 0x3f) | 0x80;
+            }
+        }
+        output[offset++] = (value & 0x3f) | 0x80;
+    }
+}
+// TextEncoder and TextDecoder are standardized in whatwg encoding:
+// https://encoding.spec.whatwg.org/
+// and available in all the modern browsers:
+// https://caniuse.com/textencoder
+// They are available in Node.js since v12 LTS as well:
+// https://nodejs.org/api/globals.html#textencoder
+const sharedTextEncoder = new TextEncoder();
+// This threshold should be determined by benchmarking, which might vary in engines and input data.
+// Run `npx ts-node benchmark/encode-string.ts` for details.
+const TEXT_ENCODER_THRESHOLD = 50;
+function utf8EncodeTE(str, output, outputOffset) {
+    sharedTextEncoder.encodeInto(str, output.subarray(outputOffset));
+}
+function utf8Encode(str, output, outputOffset) {
+    if (str.length > TEXT_ENCODER_THRESHOLD) {
+        utf8EncodeTE(str, output, outputOffset);
+    }
+    else {
+        utf8EncodeJs(str, output, outputOffset);
+    }
+}
+const CHUNK_SIZE = 4096;
+function utf8DecodeJs(bytes, inputOffset, byteLength) {
+    let offset = inputOffset;
+    const end = offset + byteLength;
+    const units = [];
+    let result = "";
+    while (offset < end) {
+        const byte1 = bytes[offset++];
+        if ((byte1 & 0x80) === 0) {
+            // 1 byte
+            units.push(byte1);
+        }
+        else if ((byte1 & 0xe0) === 0xc0) {
+            // 2 bytes
+            const byte2 = bytes[offset++] & 0x3f;
+            units.push(((byte1 & 0x1f) << 6) | byte2);
+        }
+        else if ((byte1 & 0xf0) === 0xe0) {
+            // 3 bytes
+            const byte2 = bytes[offset++] & 0x3f;
+            const byte3 = bytes[offset++] & 0x3f;
+            units.push(((byte1 & 0x1f) << 12) | (byte2 << 6) | byte3);
+        }
+        else if ((byte1 & 0xf8) === 0xf0) {
+            // 4 bytes
+            const byte2 = bytes[offset++] & 0x3f;
+            const byte3 = bytes[offset++] & 0x3f;
+            const byte4 = bytes[offset++] & 0x3f;
+            let unit = ((byte1 & 0x07) << 0x12) | (byte2 << 0x0c) | (byte3 << 0x06) | byte4;
+            if (unit > 0xffff) {
+                unit -= 0x10000;
+                units.push(((unit >>> 10) & 0x3ff) | 0xd800);
+                unit = 0xdc00 | (unit & 0x3ff);
+            }
+            units.push(unit);
+        }
+        else {
+            units.push(byte1);
+        }
+        if (units.length >= CHUNK_SIZE) {
+            result += String.fromCharCode(...units);
+            units.length = 0;
+        }
+    }
+    if (units.length > 0) {
+        result += String.fromCharCode(...units);
+    }
+    return result;
+}
+const sharedTextDecoder = new TextDecoder();
+// This threshold should be determined by benchmarking, which might vary in engines and input data.
+// Run `npx ts-node benchmark/decode-string.ts` for details.
+const TEXT_DECODER_THRESHOLD = 200;
+function utf8DecodeTD(bytes, inputOffset, byteLength) {
+    const stringBytes = bytes.subarray(inputOffset, inputOffset + byteLength);
+    return sharedTextDecoder.decode(stringBytes);
+}
+function utf8Decode(bytes, inputOffset, byteLength) {
+    if (byteLength > TEXT_DECODER_THRESHOLD) {
+        return utf8DecodeTD(bytes, inputOffset, byteLength);
+    }
+    else {
+        return utf8DecodeJs(bytes, inputOffset, byteLength);
+    }
+}
+//# sourceMappingURL=utf8.cjs.map