mirrors/electron
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Change storage implementation to async

Browse source
This commit is contained in:
Alexandre Lachèze 2017-07-11 00:35:53 +02:00
parent 9aac8967aa
commit c85f3cbd2c
1 changed files with 65 additions and 65 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

78
lib/renderer/extensions/storage.js
View file

@ -7,47 +7,52 @@ const getChromeStoragePath = (storageType, extensionId) => {
return path.join(
app.getPath('userData'), `/Chrome Storage/${extensionId}-${storageType}.json`)
}
const readChromeStorageFile = (storageType, extensionId) => {
const readChromeStorageFile = (storageType, extensionId, cb) => {
const filePath = getChromeStoragePath(storageType, extensionId)
if (!fs.existsSync(filePath)) return null
return fs.readFileSync(filePath, 'utf8')
fs.readFile(filePath, 'utf8', (err, data) => {
if (err && err.code === 'ENOENT') {
return cb(null, null)
}
cb(err, data)
})
}
const writeChromeStorageFile = (storageType, extensionId, data) => {
const writeChromeStorageFile = (storageType, extensionId, data, cb) => {
const filePath = getChromeStoragePath(storageType, extensionId)
try {
fs.mkdirSync(path.dirname(filePath))
} catch (error) {
// Ignore error
}
return fs.writeFileSync(filePath, data)
fs.mkdir(path.dirname(filePath), err => {
if (err) { /* we just ignore the errors of mkdir */ }
fs.writeFile(filePath, data, cb)
})
}
const getStorage = (storageType, extensionId) => {
const data = readChromeStorageFile(storageType, extensionId)
if (data != null) {
return JSON.parse(data)
const getStorage = (storageType, extensionId, cb) => {
readChromeStorageFile(storageType, extensionId, (err, data) => {
if (err) throw err
if (!cb) throw new TypeError('No callback provided')
if (data !== null) {
cb(JSON.parse(data))
} else {
return {}
cb({})
}
})
}
const setStorage = (storageType, extensionId, storage) => {
const setStorage = (storageType, extensionId, storage, cb) => {
const json = JSON.stringify(storage)
writeChromeStorageFile(storageType, extensionId, json)
}
const scheduleCallback = (items, callback) => {
setTimeout(function () {
callback(items)
writeChromeStorageFile(storageType, extensionId, json, err => {
if (err) throw err
if (cb) cb()
})
}
const getStorageManager = (storageType, extensionId) => {
return {
get (keys, callback) {
const storage = getStorage(storageType, extensionId)
if (keys == null) return scheduleCallback(storage, callback)
getStorage(storageType, extensionId, storage => {
if (keys == null) return callback(storage)
let defaults = {}
switch (typeof keys) {
@ -61,7 +66,7 @@ const getStorageManager = (storageType, extensionId) => {
}
break
}
if (keys.length === 0) return scheduleCallback({}, callback)
if (keys.length === 0) return callback({})
let items = {}
keys.forEach(function (key) {
@ -69,24 +74,22 @@ const getStorageManager = (storageType, extensionId) => {
if (value == null) value = defaults[key]
items[key] = value
})
scheduleCallback(items, callback)
callback(items)
})
},
set (items, callback) {
const storage = getStorage(storageType, extensionId)
getStorage(storageType, extensionId, storage => {
Object.keys(items).forEach(function (name) {
storage[name] = items[name]
})
setStorage(storageType, extensionId, storage)
setTimeout(callback)
setStorage(storageType, extensionId, storage, callback)
})
},
remove (keys, callback) {
const storage = getStorage(storageType, extensionId)
getStorage(storageType, extensionId, storage => {
if (!Array.isArray(keys)) {
keys = [keys]
}
@ -94,15 +97,12 @@ const getStorageManager = (storageType, extensionId) => {
delete storage[key]
})
setStorage(storageType, extensionId, storage)
setTimeout(callback)
setStorage(storageType, extensionId, storage, callback)
})
},
clear (callback) {
setStorage(storageType, extensionId, {})
setTimeout(callback)
setStorage(storageType, extensionId, {}, callback)
}
}
}