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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,159 @@ | ||
| import { File, knownFolders } from '@nativescript/core'; | ||
|
|
||
| let file: File; | ||
| let localStorageTimeout = null; | ||
|
|
||
| const internalSaveData = function (storage: Storage) { | ||
| try { | ||
| file.writeText(JSON.stringify(storage._localStorageData)); | ||
| } catch (err) { | ||
| // This should never happen on normal data, but if they tried to put non JS stuff it won't serialize | ||
| console.log('localStorage: unable to write storage, error: ', err); | ||
| } | ||
| }; | ||
|
|
||
| const saveData = function (storage: Storage) { | ||
| if (localStorageTimeout !== null) { | ||
| clearTimeout(localStorageTimeout); | ||
| } | ||
| localStorageTimeout = setTimeout(() => { | ||
| internalSaveData(storage); | ||
| }, 250); | ||
| }; | ||
|
|
||
| class Storage { | ||
| _localStorageData = {}; | ||
| getItem(name) { | ||
| if (this._localStorageData.hasOwnProperty(name)) { | ||
| return this._localStorageData[name]; | ||
| } | ||
| return null; | ||
| } | ||
| key(id) { | ||
| const keys = Object.keys(this._localStorageData); | ||
| if (id >= keys.length) { | ||
| return null; | ||
| } | ||
| return keys[id]; | ||
| } | ||
|
|
||
| setItemObject(name, value) { | ||
| this._localStorageData[name] = value; | ||
| saveData(this); | ||
| } | ||
| // Revamp this to be "String" only | ||
| // https://github.com/NathanaelA/nativescript-localstorage/issues/17 | ||
| setItem(name, value) { | ||
| if (value == null) { | ||
| if (value === null) { | ||
| this._localStorageData[name] = 'null'; | ||
| } else { | ||
| this._localStorageData[name] = 'undefined'; | ||
| } | ||
| } else { | ||
| this._localStorageData[name] = value.toString(); | ||
| } | ||
| saveData(this); | ||
| } | ||
| removeItem(name) { | ||
| if (this._localStorageData[name]) { | ||
| delete this._localStorageData[name]; | ||
| saveData(this); | ||
| } | ||
| } | ||
|
|
||
| clear() { | ||
| this._localStorageData = {}; | ||
| saveData(this); | ||
| } | ||
|
|
||
| get length() { | ||
| return Object.keys(this._localStorageData).length; | ||
| } | ||
| } | ||
|
|
||
| class SessionStorage { | ||
| private _storage = new Map(); | ||
| getItem(name) { | ||
| return this._storage.get(name) ?? null; | ||
| } | ||
| key(id) { | ||
| const keys = Array.from(this._storage.keys()); | ||
| if (id >= keys.length) { | ||
| return null; | ||
| } | ||
| return keys[id]; | ||
| } | ||
|
|
||
| setItemObject(name, value) { | ||
| this._storage.set(name, value); | ||
| } | ||
|
|
||
| setItem(name, value) { | ||
| if (value == null) { | ||
| if (value === null) { | ||
| this._storage.set(name, 'null'); | ||
| } else { | ||
| this._storage.set(name, 'undefined'); | ||
| } | ||
| } else { | ||
| this._storage.set(name, value.toString()); | ||
| } | ||
| } | ||
|
|
||
| removeItem(name) { | ||
| this._storage.delete(name); | ||
| } | ||
| clear() { | ||
| this._storage.clear(); | ||
| } | ||
|
|
||
| get length() { | ||
| return this._storage.size; | ||
| } | ||
| } | ||
|
|
||
| if (!global.Storage) { | ||
| (<any>global).Storage = Storage; | ||
| } | ||
|
|
||
| if (!global.localStorage || (<any>module).hot) { | ||
| const path = knownFolders.documents().path + '/localStorage.db'; | ||
| file = File.fromPath(path); | ||
| localStorageTimeout = null; | ||
|
|
||
| const loadData = function (storage: Storage) { | ||
| if (!File.exists(path)) { | ||
| return; | ||
| } | ||
|
|
||
| let data; | ||
| if (file.size === 0) { | ||
| return; | ||
| } | ||
| try { | ||
| let textData = file.readTextSync(); | ||
| data = JSON.parse(textData); | ||
| storage._localStorageData = data; | ||
| } catch (err) { | ||
| console.log('localStorage: error reading storage, Error: ', err); | ||
| } | ||
| }; | ||
|
|
||
| const storage = new Storage(); | ||
| loadData(storage); | ||
| global.localStorage = storage; | ||
| } | ||
|
|
||
| if (!global.sessionStorage) { | ||
| global.sessionStorage = new SessionStorage(); | ||
| } | ||
|
|
||
| export default global.localStorage; | ||
|
|
||
| if ((<any>module).hot) { | ||
| (<any>module).hot.accept(); | ||
| (<any>module).hot.dispose(() => { | ||
| global.localStorage = undefined; | ||
| }); | ||
| } |
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