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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/viem/_cjs/utils/encoding
Просмотр файла: toRlp.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.toRlp = toRlp;
exports.bytesToRlp = bytesToRlp;
exports.hexToRlp = hexToRlp;
const base_js_1 = require("../../errors/base.js");
const cursor_js_1 = require("../cursor.js");
const toBytes_js_1 = require("./toBytes.js");
const toHex_js_1 = require("./toHex.js");
function toRlp(bytes, to = 'hex') {
const encodable = getEncodable(bytes);
const cursor = (0, cursor_js_1.createCursor)(new Uint8Array(encodable.length));
encodable.encode(cursor);
if (to === 'hex')
return (0, toHex_js_1.bytesToHex)(cursor.bytes);
return cursor.bytes;
}
function bytesToRlp(bytes, to = 'bytes') {
return toRlp(bytes, to);
}
function hexToRlp(hex, to = 'hex') {
return toRlp(hex, to);
}
function getEncodable(bytes) {
if (Array.isArray(bytes))
return getEncodableList(bytes.map((x) => getEncodable(x)));
return getEncodableBytes(bytes);
}
function getEncodableList(list) {
const bodyLength = list.reduce((acc, x) => acc + x.length, 0);
const sizeOfBodyLength = getSizeOfLength(bodyLength);
const length = (() => {
if (bodyLength <= 55)
return 1 + bodyLength;
return 1 + sizeOfBodyLength + bodyLength;
})();
return {
length,
encode(cursor) {
if (bodyLength <= 55) {
cursor.pushByte(0xc0 + bodyLength);
}
else {
cursor.pushByte(0xc0 + 55 + sizeOfBodyLength);
if (sizeOfBodyLength === 1)
cursor.pushUint8(bodyLength);
else if (sizeOfBodyLength === 2)
cursor.pushUint16(bodyLength);
else if (sizeOfBodyLength === 3)
cursor.pushUint24(bodyLength);
else
cursor.pushUint32(bodyLength);
}
for (const { encode } of list) {
encode(cursor);
}
},
};
}
function getEncodableBytes(bytesOrHex) {
const bytes = typeof bytesOrHex === 'string' ? (0, toBytes_js_1.hexToBytes)(bytesOrHex) : bytesOrHex;
const sizeOfBytesLength = getSizeOfLength(bytes.length);
const length = (() => {
if (bytes.length === 1 && bytes[0] < 0x80)
return 1;
if (bytes.length <= 55)
return 1 + bytes.length;
return 1 + sizeOfBytesLength + bytes.length;
})();
return {
length,
encode(cursor) {
if (bytes.length === 1 && bytes[0] < 0x80) {
cursor.pushBytes(bytes);
}
else if (bytes.length <= 55) {
cursor.pushByte(0x80 + bytes.length);
cursor.pushBytes(bytes);
}
else {
cursor.pushByte(0x80 + 55 + sizeOfBytesLength);
if (sizeOfBytesLength === 1)
cursor.pushUint8(bytes.length);
else if (sizeOfBytesLength === 2)
cursor.pushUint16(bytes.length);
else if (sizeOfBytesLength === 3)
cursor.pushUint24(bytes.length);
else
cursor.pushUint32(bytes.length);
cursor.pushBytes(bytes);
}
},
};
}
function getSizeOfLength(length) {
if (length < 2 ** 8)
return 1;
if (length < 2 ** 16)
return 2;
if (length < 2 ** 24)
return 3;
if (length < 2 ** 32)
return 4;
throw new base_js_1.BaseError('Length is too large.');
}
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