128 lines
4.1 KiB
JavaScript
128 lines
4.1 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.UbjsonDecoder = void 0;
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const Reader_1 = require("@jsonjoy.com/util/lib/buffers/Reader");
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const JsonPackExtension_1 = require("../JsonPackExtension");
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class UbjsonDecoder {
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constructor() {
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this.reader = new Reader_1.Reader();
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}
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read(uint8) {
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this.reader.reset(uint8);
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return this.readAny();
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}
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decode(uint8) {
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this.reader.reset(uint8);
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return this.readAny();
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}
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readAny() {
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const reader = this.reader;
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const octet = reader.u8();
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switch (octet) {
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case 0x5a:
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return null;
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case 0x54:
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return true;
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case 0x46:
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return false;
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case 0x55:
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return reader.u8();
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case 0x69:
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return reader.i8();
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case 0x49: {
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const int = reader.view.getInt16(reader.x, false);
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reader.x += 2;
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return int;
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}
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case 0x6c: {
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const int = reader.view.getInt32(reader.x, false);
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reader.x += 4;
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return int;
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}
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case 0x64: {
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const num = reader.view.getFloat32(reader.x, false);
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reader.x += 4;
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return num;
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}
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case 0x44: {
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const num = reader.view.getFloat64(reader.x, false);
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reader.x += 8;
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return num;
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}
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case 0x4c: {
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const num = reader.view.getBigInt64(reader.x, false);
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reader.x += 8;
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return num;
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}
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case 0x53:
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return reader.utf8(+this.readAny());
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case 0x43:
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return String.fromCharCode(reader.u8());
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case 0x5b: {
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const uint8 = reader.uint8;
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const x = reader.x;
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if (uint8[x] === 0x24 && uint8[x + 1] === 0x55 && uint8[x + 2] === 0x23) {
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reader.x += 3;
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const size = +this.readAny();
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return reader.buf(size);
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}
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let type = -1;
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if (uint8[x] === 0x24) {
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reader.x++;
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type = reader.u8();
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}
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let count = -1;
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if (uint8[x] === 0x23) {
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reader.x++;
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count = reader.u8();
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}
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if (uint8[x] === 0x24) {
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reader.x++;
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type = reader.u8();
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}
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if (count >= 0) {
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let wordSize = 1;
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switch (type) {
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case 0x49:
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wordSize = 2;
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break;
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case 0x6c:
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case 0x64:
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wordSize = 4;
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break;
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case 0x44:
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case 0x4c:
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wordSize = 8;
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break;
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}
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return new JsonPackExtension_1.JsonPackExtension(type, reader.buf(count * wordSize));
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}
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else {
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const arr = [];
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while (uint8[reader.x] !== 0x5d)
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arr.push(this.readAny());
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reader.x++;
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return arr;
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}
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}
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case 0x7b: {
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const uint8 = reader.uint8;
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const obj = {};
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while (uint8[reader.x] !== 0x7d) {
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const keySize = +this.readAny();
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const key = reader.utf8(keySize);
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if (key === '__proto__')
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throw 6;
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obj[key] = this.readAny();
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}
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reader.x++;
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return obj;
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}
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case 0x4e:
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return undefined;
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}
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return;
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}
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}
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exports.UbjsonDecoder = UbjsonDecoder;
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//# sourceMappingURL=UbjsonDecoder.js.map
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