@substrate-system/bencode/dist/encoding-length.cjs.map

Bencode de/encoder

{
  "version": 3,
  "sources": ["../src/encoding-length.ts"],
  "sourcesContent": ["import { text2arr } from '@substrate-system/uint8-util'\nimport { digitCount, getType } from './util.js'\n\nfunction listLength (list) {\n    let length = 1 + 1 // type marker + end-of-type marker\n\n    for (const value of list) {\n        length += encodingLength(value)\n    }\n\n    return length\n}\n\nfunction mapLength (map) {\n    let length = 1 + 1 // type marker + end-of-type marker\n\n    for (const [key, value] of map) {\n        const keyLength = text2arr(key).byteLength\n        length += digitCount(keyLength) + 1 + keyLength\n        length += encodingLength(value)\n    }\n\n    return length\n}\n\nfunction objectLength (value) {\n    let length = 1 + 1 // type marker + end-of-type marker\n    const keys = Object.keys(value)\n\n    for (let i = 0; i < keys.length; i++) {\n        const keyLength = text2arr(keys[i]).byteLength\n        length += digitCount(keyLength) + 1 + keyLength\n        length += encodingLength(value[keys[i]])\n    }\n\n    return length\n}\n\nfunction stringLength (value) {\n    const length = text2arr(value).byteLength\n    return digitCount(length) + 1 + length\n}\n\nfunction arrayBufferLength (value) {\n    const length = value.byteLength - value.byteOffset\n    return digitCount(length) + 1 + length\n}\n\nexport function encodingLength (value) {\n    const length = 0\n\n    if (value == null) return length\n\n    const type = getType(value)\n\n    switch (type) {\n        case 'arraybufferview': return arrayBufferLength(value)\n        case 'string': return stringLength(value)\n        case 'array': case 'set': return listLength(value)\n        case 'number': return 1 + digitCount(Math.floor(value)) + 1\n        case 'bigint': return 1 + value.toString().length + 1\n        case 'object': return objectLength(value)\n        case 'map': return mapLength(value)\n        default:\n            throw new TypeError(`Unsupported value of type \"${type}\"`)\n    }\n}\n\nexport default encodingLength\n"],
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}