diff --git a/embed/polyfills/node_buffer.js b/embed/polyfills/node_buffer.js index 126cc917..905c6a17 100644 --- a/embed/polyfills/node_buffer.js +++ b/embed/polyfills/node_buffer.js @@ -1,500 +1,9 @@ -const hexTable = new TextEncoder().encode("0123456789abcdef"); -function fromHexChar(byte) { - if (48 <= byte && byte <= 57) return byte - 48; - if (97 <= byte && byte <= 102) return byte - 97 + 10; - if (65 <= byte && byte <= 70) return byte - 65 + 10; - throw errInvalidByte(byte); -} -function encodedLen(n) { - return n * 2; -} -function encode(src) { - const dst = new Uint8Array(encodedLen(src.length)); - for (let i = 0; i < dst.length; i++) { - const v = src[i]; - dst[i * 2] = hexTable[v >> 4]; - dst[i * 2 + 1] = hexTable[v & 15]; - } - return dst; -} -function encodeToString(src) { - return new TextDecoder().decode(encode(src)); -} -function decodedLen(x) { - return x >>> 1; -} -const base64abc = [ - "A", - "B", - "C", - "D", - "E", - "F", - "G", - "H", - "I", - "J", - "K", - "L", - "M", - "N", - "O", - "P", - "Q", - "R", - "S", - "T", - "U", - "V", - "W", - "X", - "Y", - "Z", - "a", - "b", - "c", - "d", - "e", - "f", - "g", - "h", - "i", - "j", - "k", - "l", - "m", - "n", - "o", - "p", - "q", - "r", - "s", - "t", - "u", - "v", - "w", - "x", - "y", - "z", - "0", - "1", - "2", - "3", - "4", - "5", - "6", - "7", - "8", - "9", - "+", - "/" -]; -function encode1(data) { - const uint8 = typeof data === "string" ? new TextEncoder().encode(data) : data instanceof Uint8Array ? data : new Uint8Array(data); - let result = "", i; - const l = uint8.length; - for (i = 2; i < l; i += 3) { - result += base64abc[uint8[i - 2] >> 2]; - result += base64abc[(uint8[i - 2] & 3) << 4 | uint8[i - 1] >> 4]; - result += base64abc[(uint8[i - 1] & 15) << 2 | uint8[i] >> 6]; - result += base64abc[uint8[i] & 63]; - } - if (i === l + 1) { - result += base64abc[uint8[i - 2] >> 2]; - result += base64abc[(uint8[i - 2] & 3) << 4]; - result += "=="; - } - if (i === l) { - result += base64abc[uint8[i - 2] >> 2]; - result += base64abc[(uint8[i - 2] & 3) << 4 | uint8[i - 1] >> 4]; - result += base64abc[(uint8[i - 1] & 15) << 2]; - result += "="; - } - return result; -} -function decode(b64) { - const binString = atob(b64); - const size = binString.length; - const bytes = new Uint8Array(size); - for (let i = 0; i < size; i++) { - bytes[i] = binString.charCodeAt(i); - } - return bytes; -} -var DiffType; -(function (DiffType1) { - DiffType1["removed"] = "removed"; - DiffType1["common"] = "common"; - DiffType1["added"] = "added"; -})(DiffType || (DiffType = { -})); -function notImplemented(msg) { - const message = msg ? `Not implemented: ${msg}` : "Not implemented"; - throw new Error(message); -} -function slowCases(enc) { - switch (enc.length) { - case 4: - if (enc === "UTF8") return "utf8"; - if (enc === "ucs2" || enc === "UCS2") return "utf16le"; - enc = `${enc}`.toLowerCase(); - if (enc === "utf8") return "utf8"; - if (enc === "ucs2") return "utf16le"; - break; - case 3: - if (enc === "hex" || enc === "HEX" || `${enc}`.toLowerCase() === "hex") { - return "hex"; - } - break; - case 5: - if (enc === "ascii") return "ascii"; - if (enc === "ucs-2") return "utf16le"; - if (enc === "UTF-8") return "utf8"; - if (enc === "ASCII") return "ascii"; - if (enc === "UCS-2") return "utf16le"; - enc = `${enc}`.toLowerCase(); - if (enc === "utf-8") return "utf8"; - if (enc === "ascii") return "ascii"; - if (enc === "ucs-2") return "utf16le"; - break; - case 6: - if (enc === "base64") return "base64"; - if (enc === "latin1" || enc === "binary") return "latin1"; - if (enc === "BASE64") return "base64"; - if (enc === "LATIN1" || enc === "BINARY") return "latin1"; - enc = `${enc}`.toLowerCase(); - if (enc === "base64") return "base64"; - if (enc === "latin1" || enc === "binary") return "latin1"; - break; - case 7: - if (enc === "utf16le" || enc === "UTF16LE" || `${enc}`.toLowerCase() === "utf16le") { - return "utf16le"; - } - break; - case 8: - if (enc === "utf-16le" || enc === "UTF-16LE" || `${enc}`.toLowerCase() === "utf-16le") { - return "utf16le"; - } - break; - default: - if (enc === "") return "utf8"; - } -} -const notImplementedEncodings = [ - "ascii", - "binary", - "latin1", - "ucs2", - "utf16le", -]; -function base64ByteLength(str, bytes) { - if (str.charCodeAt(bytes - 1) === 61) bytes--; - if (bytes > 1 && str.charCodeAt(bytes - 1) === 61) bytes--; - return bytes * 3 >>> 2; -} -function decode1(src) { - const dst = new Uint8Array(decodedLen(src.length)); - for (let i = 0; i < dst.length; i++) { - const a = fromHexChar(src[i * 2]); - const b = fromHexChar(src[i * 2 + 1]); - dst[i] = a << 4 | b; - } - if (src.length % 2 == 1) { - fromHexChar(src[dst.length * 2]); - throw errLength(); - } - return dst; -} -function decodeString(s) { - return decode1(new TextEncoder().encode(s)); -} -function normalizeEncoding(enc) { - if (enc == null || enc === "utf8" || enc === "utf-8") return "utf8"; - return slowCases(enc); -} -function checkEncoding(encoding = "utf8", strict = true) { - if (typeof encoding !== "string" || strict && encoding === "") { - if (!strict) return "utf8"; - throw new TypeError(`Unkown encoding: ${encoding}`); - } - const normalized = normalizeEncoding(encoding); - if (normalized === undefined) { - throw new TypeError(`Unkown encoding: ${encoding}`); - } - if (notImplementedEncodings.includes(encoding)) { - notImplemented(`"${encoding}" encoding`); - } - return normalized; -} -const encodingOps = { - utf8: { - byteLength: (string) => new TextEncoder().encode(string).byteLength - }, - ucs2: { - byteLength: (string) => string.length * 2 - }, - utf16le: { - byteLength: (string) => string.length * 2 - }, - latin1: { - byteLength: (string) => string.length - }, - ascii: { - byteLength: (string) => string.length - }, - base64: { - byteLength: (string) => base64ByteLength(string, string.length) - }, - hex: { - byteLength: (string) => string.length >>> 1 - } -}; -export class Buffer extends Uint8Array { - static alloc(size, fill, encoding = "utf8") { - if (typeof size !== "number") { - throw new TypeError(`The "size" argument must be of type number. Received type ${typeof size}`); - } - const buf = new Buffer(size); - if (size === 0) return buf; - let bufFill; - if (typeof fill === "string") { - const clearEncoding = checkEncoding(encoding); - if (typeof fill === "string" && fill.length === 1 && clearEncoding === "utf8") { - buf.fill(fill.charCodeAt(0)); - } else bufFill = Buffer.from(fill, clearEncoding); - } else if (typeof fill === "number") { - buf.fill(fill); - } else if (fill instanceof Uint8Array) { - if (fill.length === 0) { - throw new TypeError(`The argument "value" is invalid. Received ${fill.constructor.name} []`); - } - bufFill = fill; - } - if (bufFill) { - if (bufFill.length > buf.length) { - bufFill = bufFill.subarray(0, buf.length); - } - let offset = 0; - while (offset < size) { - buf.set(bufFill, offset); - offset += bufFill.length; - if (offset + bufFill.length >= size) break; - } - if (offset !== size) { - buf.set(bufFill.subarray(0, size - offset), offset); - } - } - return buf; - } - static allocUnsafe(size) { - return new Buffer(size); - } - static byteLength(string, encoding = "utf8") { - if (typeof string != "string") return string.byteLength; - encoding = normalizeEncoding(encoding) || "utf8"; - return encodingOps[encoding].byteLength(string); - } - static concat(list, totalLength) { - if (totalLength == undefined) { - totalLength = 0; - for (const buf of list) { - totalLength += buf.length; - } - } - const buffer = Buffer.allocUnsafe(totalLength); - let pos = 0; - for (const item of list) { - let buf; - if (!(item instanceof Buffer)) { - buf = Buffer.from(item); - } else { - buf = item; - } - buf.copy(buffer, pos); - pos += buf.length; - } - return buffer; - } - static from(value, offsetOrEncoding, length) { - const offset = typeof offsetOrEncoding === "string" ? undefined : offsetOrEncoding; - let encoding = typeof offsetOrEncoding === "string" ? offsetOrEncoding : undefined; - if (typeof value == "string") { - encoding = checkEncoding(encoding, false); - if (encoding === "hex") return new Buffer(decodeString(value).buffer); - if (encoding === "base64") return new Buffer(decode(value).buffer); - return new Buffer(new TextEncoder().encode(value).buffer); - } - return new Buffer(value, offset, length); - } - static isBuffer(obj) { - return obj instanceof Buffer; - } - static isEncoding(encoding) { - return typeof encoding === "string" && encoding.length !== 0 && normalizeEncoding(encoding) !== undefined; - } - copy(targetBuffer, targetStart = 0, sourceStart = 0, sourceEnd = this.length) { - const sourceBuffer = this.subarray(sourceStart, sourceEnd).subarray(0, Math.max(0, targetBuffer.length - targetStart)); - if (sourceBuffer.length === 0) return 0; - targetBuffer.set(sourceBuffer, targetStart); - return sourceBuffer.length; - } - equals(otherBuffer) { - if (!(otherBuffer instanceof Uint8Array)) { - throw new TypeError(`The "otherBuffer" argument must be an instance of Buffer or Uint8Array. Received type ${typeof otherBuffer}`); - } - if (this === otherBuffer) return true; - if (this.byteLength !== otherBuffer.byteLength) return false; - for (let i = 0; i < this.length; i++) { - if (this[i] !== otherBuffer[i]) return false; - } - return true; - } - readBigInt64BE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getBigInt64(offset); - } - readBigInt64LE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getBigInt64(offset, true); - } - readBigUInt64BE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getBigUint64(offset); - } - readBigUInt64LE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getBigUint64(offset, true); - } - readDoubleBE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getFloat64(offset); - } - readDoubleLE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getFloat64(offset, true); - } - readFloatBE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getFloat32(offset); - } - readFloatLE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getFloat32(offset, true); - } - readInt8(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getInt8(offset); - } - readInt16BE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getInt16(offset); - } - readInt16LE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getInt16(offset, true); - } - readInt32BE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getInt32(offset); - } - readInt32LE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getInt32(offset, true); - } - readUInt8(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getUint8(offset); - } - readUInt16BE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getUint16(offset); - } - readUInt16LE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getUint16(offset, true); - } - readUInt32BE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getUint32(offset); - } - readUInt32LE(offset = 0) { - return new DataView(this.buffer, this.byteOffset, this.byteLength).getUint32(offset, true); - } - slice(begin = 0, end = this.length) { - return this.subarray(begin, end); - } - toJSON() { - return { - type: "Buffer", - data: Array.from(this) - }; - } - toString(encoding = "utf8", start = 0, end = this.length) { - encoding = checkEncoding(encoding); - const b = this.subarray(start, end); - if (encoding === "hex") return encodeToString(b); - if (encoding === "base64") return encode1(b.buffer); - return new TextDecoder(encoding).decode(b); - } - write(string, offset = 0, length = this.length) { - return new TextEncoder().encodeInto(string, this.subarray(offset, offset + length)).written; - } - writeBigInt64BE(value, offset = 0) { - new DataView(this.buffer, this.byteOffset, this.byteLength).setBigInt64(offset, value); - return offset + 4; - } - writeBigInt64LE(value, offset = 0) { - new DataView(this.buffer, this.byteOffset, this.byteLength).setBigInt64(offset, value, true); - return offset + 4; - } - writeBigUInt64BE(value, offset = 0) { - new DataView(this.buffer, this.byteOffset, this.byteLength).setBigUint64(offset, value); - return offset + 4; - } - writeBigUInt64LE(value, offset = 0) { - new DataView(this.buffer, this.byteOffset, this.byteLength).setBigUint64(offset, value, true); - return offset + 4; - } - writeDoubleBE(value, offset = 0) { - new DataView(this.buffer, this.byteOffset, this.byteLength).setFloat64(offset, value); - return offset + 8; - } - writeDoubleLE(value, offset = 0) { - new DataView(this.buffer, this.byteOffset, this.byteLength).setFloat64(offset, value, true); - return offset + 8; - } - writeFloatBE(value, offset = 0) { - new DataView(this.buffer, this.byteOffset, this.byteLength).setFloat32(offset, value); - return offset + 4; - } - writeFloatLE(value, offset = 0) { - new DataView(this.buffer, this.byteOffset, this.byteLength).setFloat32(offset, value, true); - return offset + 4; - } - writeInt8(value, offset = 0) { - new DataView(this.buffer, this.byteOffset, this.byteLength).setInt8(offset, value); - return offset + 1; - } - writeInt16BE(value, offset = 0) { - new DataView(this.buffer, this.byteOffset, this.byteLength).setInt16(offset, value); - return offset + 2; - } - writeInt16LE(value, offset = 0) { - new DataView(this.buffer, this.byteOffset, this.byteLength).setInt16(offset, value, true); - return offset + 2; - } - writeInt32BE(value, offset = 0) { - new DataView(this.buffer, this.byteOffset, this.byteLength).setUint32(offset, value); - return offset + 4; - } - writeInt32LE(value, offset = 0) { - new DataView(this.buffer, this.byteOffset, this.byteLength).setInt32(offset, value, true); - return offset + 4; - } - writeUInt8(value, offset = 0) { - new DataView(this.buffer, this.byteOffset, this.byteLength).setUint8(offset, value); - return offset + 1; - } - writeUInt16BE(value, offset = 0) { - new DataView(this.buffer, this.byteOffset, this.byteLength).setUint16(offset, value); 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