@adguard/agtree
Version:
Tool set for working with adblock filter lists
70 lines (67 loc) • 2.61 kB
JavaScript
/*
* AGTree v3.2.2 (build date: Tue, 08 Jul 2025 13:39:47 GMT)
* (c) 2025 Adguard Software Ltd.
* Released under the MIT license
* https://github.com/AdguardTeam/tsurlfilter/tree/master/packages/agtree#readme
*/
import { BaseDeserializer } from '../base-deserializer.js';
import { ListItemNodeType } from '../../nodes/index.js';
import { NULL } from '../../utils/constants.js';
import { ListItemMarshallingMap } from '../../marshalling-utils/misc/list-item-common.js';
import { BinaryTypeMarshallingMap } from '../../marshalling-utils/misc/binary-type-common.js';
/* eslint-disable no-param-reassign */
/**
* `ListItemDeserializer` is responsible for deserializing list item nodes from binary format.
*
* @example
* `app`, `domain`, `method`, `stealth-option`
*/
class ListItemDeserializer extends BaseDeserializer {
/**
* Deserializes a list item from binary format.
*
* @param buffer Input byte buffer.
* @param node Partial list item to deserialize.
* @template T Type of the list item.
*/
static deserialize = (buffer, node) => {
const type = buffer.readUint8();
switch (type) {
case BinaryTypeMarshallingMap.AppNode:
node.type = ListItemNodeType.App;
break;
case BinaryTypeMarshallingMap.DomainNode:
node.type = ListItemNodeType.Domain;
break;
case BinaryTypeMarshallingMap.MethodNode:
node.type = ListItemNodeType.Method;
break;
case BinaryTypeMarshallingMap.StealthOptionNode:
node.type = ListItemNodeType.StealthOption;
break;
default:
throw new Error(`Invalid list item type: ${type}`);
}
let prop = buffer.readUint8();
while (prop !== NULL) {
switch (prop) {
case ListItemMarshallingMap.Exception:
node.exception = buffer.readUint8() === 1;
break;
case ListItemMarshallingMap.Value:
node.value = buffer.readString();
break;
case ListItemMarshallingMap.Start:
node.start = buffer.readUint32();
break;
case ListItemMarshallingMap.End:
node.end = buffer.readUint32();
break;
default:
throw new Error(`Invalid property: ${type}`);
}
prop = buffer.readUint8();
}
};
}
export { ListItemDeserializer };