/* * Copyright (C) 2023 Yomitan Authors * Copyright (C) 2021-2022 Yomichan Authors * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <https://www.gnu.org/licenses/>. */ const fs = require('fs'); const path = require('path'); const childProcess = require('child_process'); function clone(value) { return JSON.parse(JSON.stringify(value)); } class ManifestUtil { constructor() { const fileName = path.join(__dirname, 'data', 'manifest-variants.json'); const {manifest, variants, defaultVariant} = JSON.parse(fs.readFileSync(fileName)); this._manifest = manifest; this._variants = variants; this._defaultVariant = defaultVariant; this._variantMap = new Map(); for (const variant of variants) { this._variantMap.set(variant.name, variant); } } getManifest(variantName) { if (typeof variantName === 'string') { const variant = this._variantMap.get(variantName); if (typeof variant !== 'undefined') { return this._createVariantManifest(this._manifest, variant); } } if (typeof this._defaultVariant === 'string') { const variant = this._variantMap.get(this._defaultVariant); if (typeof variant !== 'undefined') { return this._createVariantManifest(this._manifest, variant); } } return clone(this._manifest); } getVariants() { return [...this._variants]; } getVariant(name) { return this._variantMap.get(name); } static createManifestString(manifest) { return JSON.stringify(manifest, null, 4) + '\n'; } // Private _evaluateModificationCommand(data) { const {command, args, trim} = data; const {stdout, stderr, status} = childProcess.spawnSync(command, args, { cwd: __dirname, stdio: 'pipe', shell: false }); if (status !== 0) { const message = stderr.toString('utf8').trim(); throw new Error(`Failed to execute ${command} ${args.join(' ')}\nstatus=${status}\n${message}`); } let result = stdout.toString('utf8'); if (trim) { result = result.trim(); } return result; } _applyModifications(manifest, modifications) { if (Array.isArray(modifications)) { for (const modification of modifications) { const {action, path: path2} = modification; switch (action) { case 'set': { let {value, before, after, command} = modification; const object = this._getObjectProperties(manifest, path2, path2.length - 1); const key = path2[path2.length - 1]; let {index} = modification; if (typeof index !== 'number') { index = -1; } if (typeof before === 'string') { index = this._getObjectKeyIndex(object, before); } if (typeof after === 'string') { index = this._getObjectKeyIndex(object, after); if (index >= 0) { ++index; } } if (typeof command === 'object' && command !== null) { value = this._evaluateModificationCommand(command); } this._setObjectKeyAtIndex(object, key, value, index); } break; case 'replace': { const {pattern, patternFlags, replacement} = modification; const value = this._getObjectProperties(manifest, path2, path2.length - 1); const regex = new RegExp(pattern, patternFlags); const last = path2[path2.length - 1]; let value2 = value[last]; value2 = `${value2}`.replace(regex, replacement); value[last] = value2; } break; case 'delete': { const value = this._getObjectProperties(manifest, path2, path2.length - 1); const last = path2[path2.length - 1]; delete value[last]; } break; case 'remove': { const {item} = modification; const value = this._getObjectProperties(manifest, path2, path2.length); const index = value.indexOf(item); if (index >= 0) { value.splice(index, 1); } } break; case 'splice': { const {start, deleteCount, items} = modification; const value = this._getObjectProperties(manifest, path2, path2.length); const itemsNew = items.map((v) => clone(v)); value.splice(start, deleteCount, ...itemsNew); } break; case 'copy': case 'move': { const {newPath, before, after} = modification; const oldKey = path2[path2.length - 1]; const newKey = newPath[newPath.length - 1]; const oldObject = this._getObjectProperties(manifest, path2, path2.length - 1); const newObject = this._getObjectProperties(manifest, newPath, newPath.length - 1); const oldObjectIsNewObject = this._arraysAreSame(path2, newPath, -1); const value = oldObject[oldKey]; let {index} = modification; if (typeof index !== 'number' || index < 0) { index = (oldObjectIsNewObject && action !== 'copy') ? this._getObjectKeyIndex(oldObject, oldKey) : -1; } if (typeof before === 'string') { index = this._getObjectKeyIndex(newObject, before); } if (typeof after === 'string') { index = this._getObjectKeyIndex(newObject, after); if (index >= 0) { ++index; } } this._setObjectKeyAtIndex(newObject, newKey, value, index); if (action !== 'copy' && (!oldObjectIsNewObject || oldKey !== newKey)) { delete oldObject[oldKey]; } } break; case 'add': { const {items} = modification; const value = this._getObjectProperties(manifest, path2, path2.length); const itemsNew = items.map((v) => clone(v)); value.push(...itemsNew); } break; } } } return manifest; } _arraysAreSame(array1, array2, lengthOffset) { let ii = array1.length; if (ii !== array2.length) { return false; } ii += lengthOffset; for (let i = 0; i < ii; ++i) { if (array1[i] !== array2[i]) { return false; } } return true; } _getObjectKeyIndex(object, key) { return Object.keys(object).indexOf(key); } _setObjectKeyAtIndex(object, key, value, index) { if (index < 0 || typeof key === 'number' || Object.prototype.hasOwnProperty.call(object, key)) { object[key] = value; return; } const entries = Object.entries(object); index = Math.min(index, entries.length); for (let i = index, ii = entries.length; i < ii; ++i) { const [key2] = entries[i]; delete object[key2]; } entries.splice(index, 0, [key, value]); for (let i = index, ii = entries.length; i < ii; ++i) { const [key2, value2] = entries[i]; object[key2] = value2; } } _getObjectProperties(object, path2, count) { for (let i = 0; i < count; ++i) { object = object[path2[i]]; } return object; } _getInheritanceChain(variant) { const visited = new Set(); const inheritance = []; while (true) { const {name, inherit} = variant; if (visited.has(name)) { break; } visited.add(name); inheritance.unshift(variant); if (typeof inherit !== 'string') { break; } const nextVariant = this._variantMap.get(inherit); if (typeof nextVariant === 'undefined') { break; } variant = nextVariant; } return inheritance; } _createVariantManifest(manifest, variant) { let modifiedManifest = clone(manifest); for (const {modifications} of this._getInheritanceChain(variant)) { modifiedManifest = this._applyModifications(modifiedManifest, modifications); } return modifiedManifest; } } module.exports = { ManifestUtil };