Created
August 25, 2024 15:32
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This script removes all entries in the unity asset file that are not needed internally
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| #!/usr/bin/env node | |
| /* | |
| * This script removes all entries in the asset file that are not needed. | |
| * Please note that this doesn't consider external references. | |
| */ | |
| const fs = require('fs'); | |
| const path = process.argv[2]; | |
| const data = fs.readFileSync(path, 'utf8'); | |
| const split = data.split(/(?<=\n)(?=---)/g); | |
| const heading = split[0]; | |
| const body = split.slice(1).map(parseBody); | |
| const map = new Map(body.map(x => [x.id, x])); | |
| const queue = body.filter(x => x.need).map(x => x.id); | |
| while (queue.length) { | |
| const id = queue.shift(); | |
| const entry = map.get(id); | |
| entry.dependencies.forEach(dep => { | |
| const depEntry = map.get(dep); | |
| if (!depEntry.need) { | |
| depEntry.need = true; | |
| queue.push(dep); | |
| } | |
| }); | |
| } | |
| const result = heading + body.filter(x => x.need).map(x => x.body).join(''); | |
| fs.writeFileSync(path, result, 'utf8'); | |
| /** | |
| * | |
| * @param {string} part | |
| */ | |
| function parseBody(body) { | |
| const matched = body.match(/^--- .*&(-?\d+)/); | |
| const dependenciesList = [...body.matchAll(/\{fileID: (-?\d+)\}/g)].map(match => match[1]); | |
| const dependencies = [...new Set(dependenciesList.filter(x => x != '0'))]; | |
| const need = /m_ObjectHideFlags: 0/.test(body); | |
| return { | |
| id: matched[1], | |
| body, | |
| dependencies, | |
| need, | |
| } | |
| } |
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