diff options
Diffstat (limited to 'www/lib/localforage/dist/localforage.nopromises.js')
| -rw-r--r-- | www/lib/localforage/dist/localforage.nopromises.js | 1977 |
1 files changed, 0 insertions, 1977 deletions
diff --git a/www/lib/localforage/dist/localforage.nopromises.js b/www/lib/localforage/dist/localforage.nopromises.js deleted file mode 100644 index 1a2042c7..00000000 --- a/www/lib/localforage/dist/localforage.nopromises.js +++ /dev/null @@ -1,1977 +0,0 @@ -/*! - localForage -- Offline Storage, Improved - Version 1.5.0 - https://localforage.github.io/localForage - (c) 2013-2017 Mozilla, Apache License 2.0 -*/ -(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.localforage = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw (f.code="MODULE_NOT_FOUND", f)}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){ -'use strict'; - -var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; }; - -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } - -function getIDB() { - /* global indexedDB,webkitIndexedDB,mozIndexedDB,OIndexedDB,msIndexedDB */ - try { - if (typeof indexedDB !== 'undefined') { - return indexedDB; - } - if (typeof webkitIndexedDB !== 'undefined') { - return webkitIndexedDB; - } - if (typeof mozIndexedDB !== 'undefined') { - return mozIndexedDB; - } - if (typeof OIndexedDB !== 'undefined') { - return OIndexedDB; - } - if (typeof msIndexedDB !== 'undefined') { - return msIndexedDB; - } - } catch (e) {} -} - -var idb = getIDB(); - -function isIndexedDBValid() { - try { - // Initialize IndexedDB; fall back to vendor-prefixed versions - // if needed. - if (!idb) { - return false; - } - // We mimic PouchDB here; - // - // We test for openDatabase because IE Mobile identifies itself - // as Safari. Oh the lulz... - var isSafari = typeof openDatabase !== 'undefined' && /(Safari|iPhone|iPad|iPod)/.test(navigator.userAgent) && !/Chrome/.test(navigator.userAgent) && !/BlackBerry/.test(navigator.platform); - - var hasFetch = typeof fetch === 'function' && fetch.toString().indexOf('[native code') !== -1; - - // Safari <10.1 does not meet our requirements for IDB support (#5572) - // since Safari 10.1 shipped with fetch, we can use that to detect it - return (!isSafari || hasFetch) && typeof indexedDB !== 'undefined' && - // some outdated implementations of IDB that appear on Samsung - // and HTC Android devices <4.4 are missing IDBKeyRange - typeof IDBKeyRange !== 'undefined'; - } catch (e) { - return false; - } -} - -function isWebSQLValid() { - return typeof openDatabase === 'function'; -} - -function isLocalStorageValid() { - try { - return typeof localStorage !== 'undefined' && 'setItem' in localStorage && localStorage.setItem; - } catch (e) { - return false; - } -} - -// Abstracts constructing a Blob object, so it also works in older -// browsers that don't support the native Blob constructor. (i.e. -// old QtWebKit versions, at least). -// Abstracts constructing a Blob object, so it also works in older -// browsers that don't support the native Blob constructor. (i.e. -// old QtWebKit versions, at least). -function createBlob(parts, properties) { - /* global BlobBuilder,MSBlobBuilder,MozBlobBuilder,WebKitBlobBuilder */ - parts = parts || []; - properties = properties || {}; - try { - return new Blob(parts, properties); - } catch (e) { - if (e.name !== 'TypeError') { - throw e; - } - var Builder = typeof BlobBuilder !== 'undefined' ? BlobBuilder : typeof MSBlobBuilder !== 'undefined' ? MSBlobBuilder : typeof MozBlobBuilder !== 'undefined' ? MozBlobBuilder : WebKitBlobBuilder; - var builder = new Builder(); - for (var i = 0; i < parts.length; i += 1) { - builder.append(parts[i]); - } - return builder.getBlob(properties.type); - } -} - -// This is CommonJS because lie is an external dependency, so Rollup -// can just ignore it. -if (typeof Promise === 'undefined') { - // In the "nopromises" build this will just throw if you don't have - // a global promise object, but it would throw anyway later. - _dereq_('lie/polyfill'); -} -var Promise$1 = Promise; - -function executeCallback(promise, callback) { - if (callback) { - promise.then(function (result) { - callback(null, result); - }, function (error) { - callback(error); - }); - } -} - -function executeTwoCallbacks(promise, callback, errorCallback) { - if (typeof callback === 'function') { - promise.then(callback); - } - - if (typeof errorCallback === 'function') { - promise["catch"](errorCallback); - } -} - -// Some code originally from async_storage.js in -// [Gaia](https://github.com/mozilla-b2g/gaia). - -var DETECT_BLOB_SUPPORT_STORE = 'local-forage-detect-blob-support'; -var supportsBlobs; -var dbContexts; -var toString = Object.prototype.toString; - -// Transform a binary string to an array buffer, because otherwise -// weird stuff happens when you try to work with the binary string directly. -// It is known. -// From http://stackoverflow.com/questions/14967647/ (continues on next line) -// encode-decode-image-with-base64-breaks-image (2013-04-21) -function _binStringToArrayBuffer(bin) { - var length = bin.length; - var buf = new ArrayBuffer(length); - var arr = new Uint8Array(buf); - for (var i = 0; i < length; i++) { - arr[i] = bin.charCodeAt(i); - } - return buf; -} - -// -// Blobs are not supported in all versions of IndexedDB, notably -// Chrome <37 and Android <5. In those versions, storing a blob will throw. -// -// Various other blob bugs exist in Chrome v37-42 (inclusive). -// Detecting them is expensive and confusing to users, and Chrome 37-42 -// is at very low usage worldwide, so we do a hacky userAgent check instead. -// -// content-type bug: https://code.google.com/p/chromium/issues/detail?id=408120 -// 404 bug: https://code.google.com/p/chromium/issues/detail?id=447916 -// FileReader bug: https://code.google.com/p/chromium/issues/detail?id=447836 -// -// Code borrowed from PouchDB. See: -// https://github.com/pouchdb/pouchdb/blob/master/packages/node_modules/pouchdb-adapter-idb/src/blobSupport.js -// -function _checkBlobSupportWithoutCaching(idb) { - return new Promise$1(function (resolve) { - var txn = idb.transaction(DETECT_BLOB_SUPPORT_STORE, 'readwrite'); - var blob = createBlob(['']); - txn.objectStore(DETECT_BLOB_SUPPORT_STORE).put(blob, 'key'); - - txn.onabort = function (e) { - // If the transaction aborts now its due to not being able to - // write to the database, likely due to the disk being full - e.preventDefault(); - e.stopPropagation(); - resolve(false); - }; - - txn.oncomplete = function () { - var matchedChrome = navigator.userAgent.match(/Chrome\/(\d+)/); - var matchedEdge = navigator.userAgent.match(/Edge\//); - // MS Edge pretends to be Chrome 42: - // https://msdn.microsoft.com/en-us/library/hh869301%28v=vs.85%29.aspx - resolve(matchedEdge || !matchedChrome || parseInt(matchedChrome[1], 10) >= 43); - }; - })["catch"](function () { - return false; // error, so assume unsupported - }); -} - -function _checkBlobSupport(idb) { - if (typeof supportsBlobs === 'boolean') { - return Promise$1.resolve(supportsBlobs); - } - return _checkBlobSupportWithoutCaching(idb).then(function (value) { - supportsBlobs = value; - return supportsBlobs; - }); -} - -function _deferReadiness(dbInfo) { - var dbContext = dbContexts[dbInfo.name]; - - // Create a deferred object representing the current database operation. - var deferredOperation = {}; - - deferredOperation.promise = new Promise$1(function (resolve) { - deferredOperation.resolve = resolve; - }); - - // Enqueue the deferred operation. - dbContext.deferredOperations.push(deferredOperation); - - // Chain its promise to the database readiness. - if (!dbContext.dbReady) { - dbContext.dbReady = deferredOperation.promise; - } else { - dbContext.dbReady = dbContext.dbReady.then(function () { - return deferredOperation.promise; - }); - } -} - -function _advanceReadiness(dbInfo) { - var dbContext = dbContexts[dbInfo.name]; - - // Dequeue a deferred operation. - var deferredOperation = dbContext.deferredOperations.pop(); - - // Resolve its promise (which is part of the database readiness - // chain of promises). - if (deferredOperation) { - deferredOperation.resolve(); - } -} - -function _getConnection(dbInfo, upgradeNeeded) { - return new Promise$1(function (resolve, reject) { - - if (dbInfo.db) { - if (upgradeNeeded) { - _deferReadiness(dbInfo); - dbInfo.db.close(); - } else { - return resolve(dbInfo.db); - } - } - - var dbArgs = [dbInfo.name]; - - if (upgradeNeeded) { - dbArgs.push(dbInfo.version); - } - - var openreq = idb.open.apply(idb, dbArgs); - - if (upgradeNeeded) { - openreq.onupgradeneeded = function (e) { - var db = openreq.result; - try { - db.createObjectStore(dbInfo.storeName); - if (e.oldVersion <= 1) { - // Added when support for blob shims was added - db.createObjectStore(DETECT_BLOB_SUPPORT_STORE); - } - } catch (ex) { - if (ex.name === 'ConstraintError') { - console.warn('The database "' + dbInfo.name + '"' + ' has been upgraded from version ' + e.oldVersion + ' to version ' + e.newVersion + ', but the storage "' + dbInfo.storeName + '" already exists.'); - } else { - throw ex; - } - } - }; - } - - openreq.onerror = function (e) { - e.preventDefault(); - reject(openreq.error); - }; - - openreq.onsuccess = function () { - resolve(openreq.result); - _advanceReadiness(dbInfo); - }; - }); -} - -function _getOriginalConnection(dbInfo) { - return _getConnection(dbInfo, false); -} - -function _getUpgradedConnection(dbInfo) { - return _getConnection(dbInfo, true); -} - -function _isUpgradeNeeded(dbInfo, defaultVersion) { - if (!dbInfo.db) { - return true; - } - - var isNewStore = !dbInfo.db.objectStoreNames.contains(dbInfo.storeName); - var isDowngrade = dbInfo.version < dbInfo.db.version; - var isUpgrade = dbInfo.version > dbInfo.db.version; - - if (isDowngrade) { - // If the version is not the default one - // then warn for impossible downgrade. - if (dbInfo.version !== defaultVersion) { - console.warn('The database "' + dbInfo.name + '"' + ' can\'t be downgraded from version ' + dbInfo.db.version + ' to version ' + dbInfo.version + '.'); - } - // Align the versions to prevent errors. - dbInfo.version = dbInfo.db.version; - } - - if (isUpgrade || isNewStore) { - // If the store is new then increment the version (if needed). - // This will trigger an "upgradeneeded" event which is required - // for creating a store. - if (isNewStore) { - var incVersion = dbInfo.db.version + 1; - if (incVersion > dbInfo.version) { - dbInfo.version = incVersion; - } - } - - return true; - } - - return false; -} - -// encode a blob for indexeddb engines that don't support blobs -function _encodeBlob(blob) { - return new Promise$1(function (resolve, reject) { - var reader = new FileReader(); - reader.onerror = reject; - reader.onloadend = function (e) { - var base64 = btoa(e.target.result || ''); - resolve({ - __local_forage_encoded_blob: true, - data: base64, - type: blob.type - }); - }; - reader.readAsBinaryString(blob); - }); -} - -// decode an encoded blob -function _decodeBlob(encodedBlob) { - var arrayBuff = _binStringToArrayBuffer(atob(encodedBlob.data)); - return createBlob([arrayBuff], { type: encodedBlob.type }); -} - -// is this one of our fancy encoded blobs? -function _isEncodedBlob(value) { - return value && value.__local_forage_encoded_blob; -} - -// Specialize the default `ready()` function by making it dependent -// on the current database operations. Thus, the driver will be actually -// ready when it's been initialized (default) *and* there are no pending -// operations on the database (initiated by some other instances). -function _fullyReady(callback) { - var self = this; - - var promise = self._initReady().then(function () { - var dbContext = dbContexts[self._dbInfo.name]; - - if (dbContext && dbContext.dbReady) { - return dbContext.dbReady; - } - }); - - executeTwoCallbacks(promise, callback, callback); - return promise; -} - -// Open the IndexedDB database (automatically creates one if one didn't -// previously exist), using any options set in the config. -function _initStorage(options) { - var self = this; - var dbInfo = { - db: null - }; - - if (options) { - for (var i in options) { - dbInfo[i] = options[i]; - } - } - - // Initialize a singleton container for all running localForages. - if (!dbContexts) { - dbContexts = {}; - } - - // Get the current context of the database; - var dbContext = dbContexts[dbInfo.name]; - - // ...or create a new context. - if (!dbContext) { - dbContext = { - // Running localForages sharing a database. - forages: [], - // Shared database. - db: null, - // Database readiness (promise). - dbReady: null, - // Deferred operations on the database. - deferredOperations: [] - }; - // Register the new context in the global container. - dbContexts[dbInfo.name] = dbContext; - } - - // Register itself as a running localForage in the current context. - dbContext.forages.push(self); - - // Replace the default `ready()` function with the specialized one. - if (!self._initReady) { - self._initReady = self.ready; - self.ready = _fullyReady; - } - - // Create an array of initialization states of the related localForages. - var initPromises = []; - - function ignoreErrors() { - // Don't handle errors here, - // just makes sure related localForages aren't pending. - return Promise$1.resolve(); - } - - for (var j = 0; j < dbContext.forages.length; j++) { - var forage = dbContext.forages[j]; - if (forage !== self) { - // Don't wait for itself... - initPromises.push(forage._initReady()["catch"](ignoreErrors)); - } - } - - // Take a snapshot of the related localForages. - var forages = dbContext.forages.slice(0); - - // Initialize the connection process only when - // all the related localForages aren't pending. - return Promise$1.all(initPromises).then(function () { - dbInfo.db = dbContext.db; - // Get the connection or open a new one without upgrade. - return _getOriginalConnection(dbInfo); - }).then(function (db) { - dbInfo.db = db; - if (_isUpgradeNeeded(dbInfo, self._defaultConfig.version)) { - // Reopen the database for upgrading. - return _getUpgradedConnection(dbInfo); - } - return db; - }).then(function (db) { - dbInfo.db = dbContext.db = db; - self._dbInfo = dbInfo; - // Share the final connection amongst related localForages. - for (var k = 0; k < forages.length; k++) { - var forage = forages[k]; - if (forage !== self) { - // Self is already up-to-date. - forage._dbInfo.db = dbInfo.db; - forage._dbInfo.version = dbInfo.version; - } - } - }); -} - -function getItem(key, callback) { - var self = this; - - // Cast the key to a string, as that's all we can set as a key. - if (typeof key !== 'string') { - console.warn(key + ' used as a key, but it is not a string.'); - key = String(key); - } - - var promise = new Promise$1(function (resolve, reject) { - self.ready().then(function () { - var dbInfo = self._dbInfo; - var store = dbInfo.db.transaction(dbInfo.storeName, 'readonly').objectStore(dbInfo.storeName); - var req = store.get(key); - - req.onsuccess = function () { - var value = req.result; - if (value === undefined) { - value = null; - } - if (_isEncodedBlob(value)) { - value = _decodeBlob(value); - } - resolve(value); - }; - - req.onerror = function () { - reject(req.error); - }; - })["catch"](reject); - }); - - executeCallback(promise, callback); - return promise; -} - -// Iterate over all items stored in database. -function iterate(iterator, callback) { - var self = this; - - var promise = new Promise$1(function (resolve, reject) { - self.ready().then(function () { - var dbInfo = self._dbInfo; - var store = dbInfo.db.transaction(dbInfo.storeName, 'readonly').objectStore(dbInfo.storeName); - - var req = store.openCursor(); - var iterationNumber = 1; - - req.onsuccess = function () { - var cursor = req.result; - - if (cursor) { - var value = cursor.value; - if (_isEncodedBlob(value)) { - value = _decodeBlob(value); - } - var result = iterator(value, cursor.key, iterationNumber++); - - if (result !== void 0) { - resolve(result); - } else { - cursor["continue"](); - } - } else { - resolve(); - } - }; - - req.onerror = function () { - reject(req.error); - }; - })["catch"](reject); - }); - - executeCallback(promise, callback); - - return promise; -} - -function setItem(key, value, callback) { - var self = this; - - // Cast the key to a string, as that's all we can set as a key. - if (typeof key !== 'string') { - console.warn(key + ' used as a key, but it is not a string.'); - key = String(key); - } - - var promise = new Promise$1(function (resolve, reject) { - var dbInfo; - self.ready().then(function () { - dbInfo = self._dbInfo; - if (toString.call(value) === '[object Blob]') { - return _checkBlobSupport(dbInfo.db).then(function (blobSupport) { - if (blobSupport) { - return value; - } - return _encodeBlob(value); - }); - } - return value; - }).then(function (value) { - var transaction = dbInfo.db.transaction(dbInfo.storeName, 'readwrite'); - var store = transaction.objectStore(dbInfo.storeName); - var req = store.put(value, key); - - // The reason we don't _save_ null is because IE 10 does - // not support saving the `null` type in IndexedDB. How - // ironic, given the bug below! - // See: https://github.com/mozilla/localForage/issues/161 - if (value === null) { - value = undefined; - } - - transaction.oncomplete = function () { - // Cast to undefined so the value passed to - // callback/promise is the same as what one would get out - // of `getItem()` later. This leads to some weirdness - // (setItem('foo', undefined) will return `null`), but - // it's not my fault localStorage is our baseline and that - // it's weird. - if (value === undefined) { - value = null; - } - - resolve(value); - }; - transaction.onabort = transaction.onerror = function () { - var err = req.error ? req.error : req.transaction.error; - reject(err); - }; - })["catch"](reject); - }); - - executeCallback(promise, callback); - return promise; -} - -function removeItem(key, callback) { - var self = this; - - // Cast the key to a string, as that's all we can set as a key. - if (typeof key !== 'string') { - console.warn(key + ' used as a key, but it is not a string.'); - key = String(key); - } - - var promise = new Promise$1(function (resolve, reject) { - self.ready().then(function () { - var dbInfo = self._dbInfo; - var transaction = dbInfo.db.transaction(dbInfo.storeName, 'readwrite'); - var store = transaction.objectStore(dbInfo.storeName); - - // We use a Grunt task to make this safe for IE and some - // versions of Android (including those used by Cordova). - // Normally IE won't like `.delete()` and will insist on - // using `['delete']()`, but we have a build step that - // fixes this for us now. - var req = store["delete"](key); - transaction.oncomplete = function () { - resolve(); - }; - - transaction.onerror = function () { - reject(req.error); - }; - - // The request will be also be aborted if we've exceeded our storage - // space. - transaction.onabort = function () { - var err = req.error ? req.error : req.transaction.error; - reject(err); - }; - })["catch"](reject); - }); - - executeCallback(promise, callback); - return promise; -} - -function clear(callback) { - var self = this; - - var promise = new Promise$1(function (resolve, reject) { - self.ready().then(function () { - var dbInfo = self._dbInfo; - var transaction = dbInfo.db.transaction(dbInfo.storeName, 'readwrite'); - var store = transaction.objectStore(dbInfo.storeName); - var req = store.clear(); - - transaction.oncomplete = function () { - resolve(); - }; - - transaction.onabort = transaction.onerror = function () { - var err = req.error ? req.error : req.transaction.error; - reject(err); - }; - })["catch"](reject); - }); - - executeCallback(promise, callback); - return promise; -} - -function length(callback) { - var self = this; - - var promise = new Promise$1(function (resolve, reject) { - self.ready().then(function () { - var dbInfo = self._dbInfo; - var store = dbInfo.db.transaction(dbInfo.storeName, 'readonly').objectStore(dbInfo.storeName); - var req = store.count(); - - req.onsuccess = function () { - resolve(req.result); - }; - - req.onerror = function () { - reject(req.error); - }; - })["catch"](reject); - }); - - executeCallback(promise, callback); - return promise; -} - -function key(n, callback) { - var self = this; - - var promise = new Promise$1(function (resolve, reject) { - if (n < 0) { - resolve(null); - - return; - } - - self.ready().then(function () { - var dbInfo = self._dbInfo; - var store = dbInfo.db.transaction(dbInfo.storeName, 'readonly').objectStore(dbInfo.storeName); - - var advanced = false; - var req = store.openCursor(); - req.onsuccess = function () { - var cursor = req.result; - if (!cursor) { - // this means there weren't enough keys - resolve(null); - - return; - } - - if (n === 0) { - // We have the first key, return it if that's what they - // wanted. - resolve(cursor.key); - } else { - if (!advanced) { - // Otherwise, ask the cursor to skip ahead n - // records. - advanced = true; - cursor.advance(n); - } else { - // When we get here, we've got the nth key. - resolve(cursor.key); - } - } - }; - - req.onerror = function () { - reject(req.error); - }; - })["catch"](reject); - }); - - executeCallback(promise, callback); - return promise; -} - -function keys(callback) { - var self = this; - - var promise = new Promise$1(function (resolve, reject) { - self.ready().then(function () { - var dbInfo = self._dbInfo; - var store = dbInfo.db.transaction(dbInfo.storeName, 'readonly').objectStore(dbInfo.storeName); - - var req = store.openCursor(); - var keys = []; - - req.onsuccess = function () { - var cursor = req.result; - - if (!cursor) { - resolve(keys); - return; - } - - keys.push(cursor.key); - cursor["continue"](); - }; - - req.onerror = function () { - reject(req.error); - }; - })["catch"](reject); - }); - - executeCallback(promise, callback); - return promise; -} - -var asyncStorage = { - _driver: 'asyncStorage', - _initStorage: _initStorage, - iterate: iterate, - getItem: getItem, - setItem: setItem, - removeItem: removeItem, - clear: clear, - length: length, - key: key, - keys: keys -}; - -// Sadly, the best way to save binary data in WebSQL/localStorage is serializing -// it to Base64, so this is how we store it to prevent very strange errors with less -// verbose ways of binary <-> string data storage. -var BASE_CHARS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; - -var BLOB_TYPE_PREFIX = '~~local_forage_type~'; -var BLOB_TYPE_PREFIX_REGEX = /^~~local_forage_type~([^~]+)~/; - -var SERIALIZED_MARKER = '__lfsc__:'; -var SERIALIZED_MARKER_LENGTH = SERIALIZED_MARKER.length; - -// OMG the serializations! -var TYPE_ARRAYBUFFER = 'arbf'; -var TYPE_BLOB = 'blob'; -var TYPE_INT8ARRAY = 'si08'; -var TYPE_UINT8ARRAY = 'ui08'; -var TYPE_UINT8CLAMPEDARRAY = 'uic8'; -var TYPE_INT16ARRAY = 'si16'; -var TYPE_INT32ARRAY = 'si32'; -var TYPE_UINT16ARRAY = 'ur16'; -var TYPE_UINT32ARRAY = 'ui32'; -var TYPE_FLOAT32ARRAY = 'fl32'; -var TYPE_FLOAT64ARRAY = 'fl64'; -var TYPE_SERIALIZED_MARKER_LENGTH = SERIALIZED_MARKER_LENGTH + TYPE_ARRAYBUFFER.length; - -var toString$1 = Object.prototype.toString; - -function stringToBuffer(serializedString) { - // Fill the string into a ArrayBuffer. - var bufferLength = serializedString.length * 0.75; - var len = serializedString.length; - var i; - var p = 0; - var encoded1, encoded2, encoded3, encoded4; - - if (serializedString[serializedString.length - 1] === '=') { - bufferLength--; - if (serializedString[serializedString.length - 2] === '=') { - bufferLength--; - } - } - - var buffer = new ArrayBuffer(bufferLength); - var bytes = new Uint8Array(buffer); - - for (i = 0; i < len; i += 4) { - encoded1 = BASE_CHARS.indexOf(serializedString[i]); - encoded2 = BASE_CHARS.indexOf(serializedString[i + 1]); - encoded3 = BASE_CHARS.indexOf(serializedString[i + 2]); - encoded4 = BASE_CHARS.indexOf(serializedString[i + 3]); - - /*jslint bitwise: true */ - bytes[p++] = encoded1 << 2 | encoded2 >> 4; - bytes[p++] = (encoded2 & 15) << 4 | encoded3 >> 2; - bytes[p++] = (encoded3 & 3) << 6 | encoded4 & 63; - } - return buffer; -} - -// Converts a buffer to a string to store, serialized, in the backend -// storage library. -function bufferToString(buffer) { - // base64-arraybuffer - var bytes = new Uint8Array(buffer); - var base64String = ''; - var i; - - for (i = 0; i < bytes.length; i += 3) { - /*jslint bitwise: true */ - base64String += BASE_CHARS[bytes[i] >> 2]; - base64String += BASE_CHARS[(bytes[i] & 3) << 4 | bytes[i + 1] >> 4]; - base64String += BASE_CHARS[(bytes[i + 1] & 15) << 2 | bytes[i + 2] >> 6]; - base64String += BASE_CHARS[bytes[i + 2] & 63]; - } - - if (bytes.length % 3 === 2) { - base64String = base64String.substring(0, base64String.length - 1) + '='; - } else if (bytes.length % 3 === 1) { - base64String = base64String.substring(0, base64String.length - 2) + '=='; - } - - return base64String; -} - -// Serialize a value, afterwards executing a callback (which usually -// instructs the `setItem()` callback/promise to be executed). This is how -// we store binary data with localStorage. -function serialize(value, callback) { - var valueType = ''; - if (value) { - valueType = toString$1.call(value); - } - - // Cannot use `value instanceof ArrayBuffer` or such here, as these - // checks fail when running the tests using casper.js... - // - // TODO: See why those tests fail and use a better solution. - if (value && (valueType === '[object ArrayBuffer]' || value.buffer && toString$1.call(value.buffer) === '[object ArrayBuffer]')) { - // Convert binary arrays to a string and prefix the string with - // a special marker. - var buffer; - var marker = SERIALIZED_MARKER; - - if (value instanceof ArrayBuffer) { - buffer = value; - marker += TYPE_ARRAYBUFFER; - } else { - buffer = value.buffer; - - if (valueType === '[object Int8Array]') { - marker += TYPE_INT8ARRAY; - } else if (valueType === '[object Uint8Array]') { - marker += TYPE_UINT8ARRAY; - } else if (valueType === '[object Uint8ClampedArray]') { - marker += TYPE_UINT8CLAMPEDARRAY; - } else if (valueType === '[object Int16Array]') { - marker += TYPE_INT16ARRAY; - } else if (valueType === '[object Uint16Array]') { - marker += TYPE_UINT16ARRAY; - } else if (valueType === '[object Int32Array]') { - marker += TYPE_INT32ARRAY; - } else if (valueType === '[object Uint32Array]') { - marker += TYPE_UINT32ARRAY; - } else if (valueType === '[object Float32Array]') { - marker += TYPE_FLOAT32ARRAY; - } else if (valueType === '[object Float64Array]') { - marker += TYPE_FLOAT64ARRAY; - } else { - callback(new Error('Failed to get type for BinaryArray')); - } - } - - callback(marker + bufferToString(buffer)); - } else if (valueType === '[object Blob]') { - // Conver the blob to a binaryArray and then to a string. - var fileReader = new FileReader(); - - fileReader.onload = function () { - // Backwards-compatible prefix for the blob type. - var str = BLOB_TYPE_PREFIX + value.type + '~' + bufferToString(this.result); - - callback(SERIALIZED_MARKER + TYPE_BLOB + str); - }; - - fileReader.readAsArrayBuffer(value); - } else { - try { - callback(JSON.stringify(value)); - } catch (e) { - console.error("Couldn't convert value into a JSON string: ", value); - - callback(null, e); - } - } -} - -// Deserialize data we've inserted into a value column/field. We place -// special markers into our strings to mark them as encoded; this isn't -// as nice as a meta field, but it's the only sane thing we can do whilst -// keeping localStorage support intact. -// -// Oftentimes this will just deserialize JSON content, but if we have a -// special marker (SERIALIZED_MARKER, defined above), we will extract -// some kind of arraybuffer/binary data/typed array out of the string. -function deserialize(value) { - // If we haven't marked this string as being specially serialized (i.e. - // something other than serialized JSON), we can just return it and be - // done with it. - if (value.substring(0, SERIALIZED_MARKER_LENGTH) !== SERIALIZED_MARKER) { - return JSON.parse(value); - } - - // The following code deals with deserializing some kind of Blob or - // TypedArray. First we separate out the type of data we're dealing - // with from the data itself. - var serializedString = value.substring(TYPE_SERIALIZED_MARKER_LENGTH); - var type = value.substring(SERIALIZED_MARKER_LENGTH, TYPE_SERIALIZED_MARKER_LENGTH); - - var blobType; - // Backwards-compatible blob type serialization strategy. - // DBs created with older versions of localForage will simply not have the blob type. - if (type === TYPE_BLOB && BLOB_TYPE_PREFIX_REGEX.test(serializedString)) { - var matcher = serializedString.match(BLOB_TYPE_PREFIX_REGEX); - blobType = matcher[1]; - serializedString = serializedString.substring(matcher[0].length); - } - var buffer = stringToBuffer(serializedString); - - // Return the right type based on the code/type set during - // serialization. - switch (type) { - case TYPE_ARRAYBUFFER: - return buffer; - case TYPE_BLOB: - return createBlob([buffer], { type: blobType }); - case TYPE_INT8ARRAY: - return new Int8Array(buffer); - case TYPE_UINT8ARRAY: - return new Uint8Array(buffer); - case TYPE_UINT8CLAMPEDARRAY: - return new Uint8ClampedArray(buffer); - case TYPE_INT16ARRAY: - return new Int16Array(buffer); - case TYPE_UINT16ARRAY: - return new Uint16Array(buffer); - case TYPE_INT32ARRAY: - return new Int32Array(buffer); - case TYPE_UINT32ARRAY: - return new Uint32Array(buffer); - case TYPE_FLOAT32ARRAY: - return new Float32Array(buffer); - case TYPE_FLOAT64ARRAY: - return new Float64Array(buffer); - default: - throw new Error('Unkown type: ' + type); - } -} - -var localforageSerializer = { - serialize: serialize, - deserialize: deserialize, - stringToBuffer: stringToBuffer, - bufferToString: bufferToString -}; - -/* - * Includes code from: - * - * base64-arraybuffer - * https://github.com/niklasvh/base64-arraybuffer - * - * Copyright (c) 2012 Niklas von Hertzen - * Licensed under the MIT license. - */ -// Open the WebSQL database (automatically creates one if one didn't -// previously exist), using any options set in the config. -function _initStorage$1(options) { - var self = this; - var dbInfo = { - db: null - }; - - if (options) { - for (var i in options) { - dbInfo[i] = typeof options[i] !== 'string' ? options[i].toString() : options[i]; - } - } - - var dbInfoPromise = new Promise$1(function (resolve, reject) { - // Open the database; the openDatabase API will automatically - // create it for us if it doesn't exist. - try { - dbInfo.db = openDatabase(dbInfo.name, String(dbInfo.version), dbInfo.description, dbInfo.size); - } catch (e) { - return reject(e); - } - - // Create our key/value table if it doesn't exist. - dbInfo.db.transaction(function (t) { - t.executeSql('CREATE TABLE IF NOT EXISTS ' + dbInfo.storeName + ' (id INTEGER PRIMARY KEY, key unique, value)', [], function () { - self._dbInfo = dbInfo; - resolve(); - }, function (t, error) { - reject(error); - }); - }); - }); - - dbInfo.serializer = localforageSerializer; - return dbInfoPromise; -} - -function getItem$1(key, callback) { - var self = this; - - // Cast the key to a string, as that's all we can set as a key. - if (typeof key !== 'string') { - console.warn(key + ' used as a key, but it is not a string.'); - key = String(key); - } - - var promise = new Promise$1(function (resolve, reject) { - self.ready().then(function () { - var dbInfo = self._dbInfo; - dbInfo.db.transaction(function (t) { - t.executeSql('SELECT * FROM ' + dbInfo.storeName + ' WHERE key = ? LIMIT 1', [key], function (t, results) { - var result = results.rows.length ? results.rows.item(0).value : null; - - // Check to see if this is serialized content we need to - // unpack. - if (result) { - result = dbInfo.serializer.deserialize(result); - } - - resolve(result); - }, function (t, error) { - - reject(error); - }); - }); - })["catch"](reject); - }); - - executeCallback(promise, callback); - return promise; -} - -function iterate$1(iterator, callback) { - var self = this; - - var promise = new Promise$1(function (resolve, reject) { - self.ready().then(function () { - var dbInfo = self._dbInfo; - - dbInfo.db.transaction(function (t) { - t.executeSql('SELECT * FROM ' + dbInfo.storeName, [], function (t, results) { - var rows = results.rows; - var length = rows.length; - - for (var i = 0; i < length; i++) { - var item = rows.item(i); - var result = item.value; - - // Check to see if this is serialized content - // we need to unpack. - if (result) { - result = dbInfo.serializer.deserialize(result); - } - - result = iterator(result, item.key, i + 1); - - // void(0) prevents problems with redefinition - // of `undefined`. - if (result !== void 0) { - resolve(result); - return; - } - } - - resolve(); - }, function (t, error) { - reject(error); - }); - }); - })["catch"](reject); - }); - - executeCallback(promise, callback); - return promise; -} - -function _setItem(key, value, callback, retriesLeft) { - var self = this; - - // Cast the key to a string, as that's all we can set as a key. - if (typeof key !== 'string') { - console.warn(key + ' used as a key, but it is not a string.'); - key = String(key); - } - - var promise = new Promise$1(function (resolve, reject) { - self.ready().then(function () { - // The localStorage API doesn't return undefined values in an - // "expected" way, so undefined is always cast to null in all - // drivers. See: https://github.com/mozilla/localForage/pull/42 - if (value === undefined) { - value = null; - } - - // Save the original value to pass to the callback. - var originalValue = value; - - var dbInfo = self._dbInfo; - dbInfo.serializer.serialize(value, function (value, error) { - if (error) { - reject(error); - } else { - dbInfo.db.transaction(function (t) { - t.executeSql('INSERT OR REPLACE INTO ' + dbInfo.storeName + ' (key, value) VALUES (?, ?)', [key, value], function () { - resolve(originalValue); - }, function (t, error) { - reject(error); - }); - }, function (sqlError) { - // The transaction failed; check - // to see if it's a quota error. - if (sqlError.code === sqlError.QUOTA_ERR) { - // We reject the callback outright for now, but - // it's worth trying to re-run the transaction. - // Even if the user accepts the prompt to use - // more storage on Safari, this error will - // be called. - // - // Try to re-run the transaction. - if (retriesLeft > 0) { - resolve(_setItem.apply(self, [key, originalValue, callback, retriesLeft - 1])); - return; - } - reject(sqlError); - } - }); - } - }); - })["catch"](reject); - }); - - executeCallback(promise, callback); - return promise; -} - -function setItem$1(key, value, callback) { - return _setItem.apply(this, [key, value, callback, 1]); -} - -function removeItem$1(key, callback) { - var self = this; - - // Cast the key to a string, as that's all we can set as a key. - if (typeof key !== 'string') { - console.warn(key + ' used as a key, but it is not a string.'); - key = String(key); - } - - var promise = new Promise$1(function (resolve, reject) { - self.ready().then(function () { - var dbInfo = self._dbInfo; - dbInfo.db.transaction(function (t) { - t.executeSql('DELETE FROM ' + dbInfo.storeName + ' WHERE key = ?', [key], function () { - resolve(); - }, function (t, error) { - - reject(error); - }); - }); - })["catch"](reject); - }); - - executeCallback(promise, callback); - return promise; -} - -// Deletes every item in the table. -// TODO: Find out if this resets the AUTO_INCREMENT number. -function clear$1(callback) { - var self = this; - - var promise = new Promise$1(function (resolve, reject) { - self.ready().then(function () { - var dbInfo = self._dbInfo; - dbInfo.db.transaction(function (t) { - t.executeSql('DELETE FROM ' + dbInfo.storeName, [], function () { - resolve(); - }, function (t, error) { - reject(error); - }); - }); - })["catch"](reject); - }); - - executeCallback(promise, callback); - return promise; -} - -// Does a simple `COUNT(key)` to get the number of items stored in -// localForage. -function length$1(callback) { - var self = this; - - var promise = new Promise$1(function (resolve, reject) { - self.ready().then(function () { - var dbInfo = self._dbInfo; - dbInfo.db.transaction(function (t) { - // Ahhh, SQL makes this one soooooo easy. - t.executeSql('SELECT COUNT(key) as c FROM ' + dbInfo.storeName, [], function (t, results) { - var result = results.rows.item(0).c; - - resolve(result); - }, function (t, error) { - - reject(error); - }); - }); - })["catch"](reject); - }); - - executeCallback(promise, callback); - return promise; -} - -// Return the key located at key index X; essentially gets the key from a -// `WHERE id = ?`. This is the most efficient way I can think to implement -// this rarely-used (in my experience) part of the API, but it can seem -// inconsistent, because we do `INSERT OR REPLACE INTO` on `setItem()`, so -// the ID of each key will change every time it's updated. Perhaps a stored -// procedure for the `setItem()` SQL would solve this problem? -// TODO: Don't change ID on `setItem()`. -function key$1(n, callback) { - var self = this; - - var promise = new Promise$1(function (resolve, reject) { - self.ready().then(function () { - var dbInfo = self._dbInfo; - dbInfo.db.transaction(function (t) { - t.executeSql('SELECT key FROM ' + dbInfo.storeName + ' WHERE id = ? LIMIT 1', [n + 1], function (t, results) { - var result = results.rows.length ? results.rows.item(0).key : null; - resolve(result); - }, function (t, error) { - reject(error); - }); - }); - })["catch"](reject); - }); - - executeCallback(promise, callback); - return promise; -} - -function keys$1(callback) { - var self = this; - - var promise = new Promise$1(function (resolve, reject) { - self.ready().then(function () { - var dbInfo = self._dbInfo; - dbInfo.db.transaction(function (t) { - t.executeSql('SELECT key FROM ' + dbInfo.storeName, [], function (t, results) { - var keys = []; - - for (var i = 0; i < results.rows.length; i++) { - keys.push(results.rows.item(i).key); - } - - resolve(keys); - }, function (t, error) { - - reject(error); - }); - }); - })["catch"](reject); - }); - - executeCallback(promise, callback); - return promise; -} - -var webSQLStorage = { - _driver: 'webSQLStorage', - _initStorage: _initStorage$1, - iterate: iterate$1, - getItem: getItem$1, - setItem: setItem$1, - removeItem: removeItem$1, - clear: clear$1, - length: length$1, - key: key$1, - keys: keys$1 -}; - -// Config the localStorage backend, using options set in the config. -function _initStorage$2(options) { - var self = this; - var dbInfo = {}; - if (options) { - for (var i in options) { - dbInfo[i] = options[i]; - } - } - - dbInfo.keyPrefix = dbInfo.name + '/'; - - if (dbInfo.storeName !== self._defaultConfig.storeName) { - dbInfo.keyPrefix += dbInfo.storeName + '/'; - } - - self._dbInfo = dbInfo; - dbInfo.serializer = localforageSerializer; - - return Promise$1.resolve(); -} - -// Remove all keys from the datastore, effectively destroying all data in -// the app's key/value store! -function clear$2(callback) { - var self = this; - var promise = self.ready().then(function () { - var keyPrefix = self._dbInfo.keyPrefix; - - for (var i = localStorage.length - 1; i >= 0; i--) { - var key = localStorage.key(i); - - if (key.indexOf(keyPrefix) === 0) { - localStorage.removeItem(key); - } - } - }); - - executeCallback(promise, callback); - return promise; -} - -// Retrieve an item from the store. Unlike the original async_storage -// library in Gaia, we don't modify return values at all. If a key's value -// is `undefined`, we pass that value to the callback function. -function getItem$2(key, callback) { - var self = this; - - // Cast the key to a string, as that's all we can set as a key. - if (typeof key !== 'string') { - console.warn(key + ' used as a key, but it is not a string.'); - key = String(key); - } - - var promise = self.ready().then(function () { - var dbInfo = self._dbInfo; - var result = localStorage.getItem(dbInfo.keyPrefix + key); - - // If a result was found, parse it from the serialized - // string into a JS object. If result isn't truthy, the key - // is likely undefined and we'll pass it straight to the - // callback. - if (result) { - result = dbInfo.serializer.deserialize(result); - } - - return result; - }); - - executeCallback(promise, callback); - return promise; -} - -// Iterate over all items in the store. -function iterate$2(iterator, callback) { - var self = this; - - var promise = self.ready().then(function () { - var dbInfo = self._dbInfo; - var keyPrefix = dbInfo.keyPrefix; - var keyPrefixLength = keyPrefix.length; - var length = localStorage.length; - - // We use a dedicated iterator instead of the `i` variable below - // so other keys we fetch in localStorage aren't counted in - // the `iterationNumber` argument passed to the `iterate()` - // callback. - // - // See: github.com/mozilla/localForage/pull/435#discussion_r38061530 - var iterationNumber = 1; - - for (var i = 0; i < length; i++) { - var key = localStorage.key(i); - if (key.indexOf(keyPrefix) !== 0) { - continue; - } - var value = localStorage.getItem(key); - - // If a result was found, parse it from the serialized - // string into a JS object. If result isn't truthy, the - // key is likely undefined and we'll pass it straight - // to the iterator. - if (value) { - value = dbInfo.serializer.deserialize(value); - } - - value = iterator(value, key.substring(keyPrefixLength), iterationNumber++); - - if (value !== void 0) { - return value; - } - } - }); - - executeCallback(promise, callback); - return promise; -} - -// Same as localStorage's key() method, except takes a callback. -function key$2(n, callback) { - var self = this; - var promise = self.ready().then(function () { - var dbInfo = self._dbInfo; - var result; - try { - result = localStorage.key(n); - } catch (error) { - result = null; - } - - // Remove the prefix from the key, if a key is found. - if (result) { - result = result.substring(dbInfo.keyPrefix.length); - } - - return result; - }); - - executeCallback(promise, callback); - return promise; -} - -function keys$2(callback) { - var self = this; - var promise = self.ready().then(function () { - var dbInfo = self._dbInfo; - var length = localStorage.length; - var keys = []; - - for (var i = 0; i < length; i++) { - if (localStorage.key(i).indexOf(dbInfo.keyPrefix) === 0) { - keys.push(localStorage.key(i).substring(dbInfo.keyPrefix.length)); - } - } - - return keys; - }); - - executeCallback(promise, callback); - return promise; -} - -// Supply the number of keys in the datastore to the callback function. -function length$2(callback) { - var self = this; - var promise = self.keys().then(function (keys) { - return keys.length; - }); - - executeCallback(promise, callback); - return promise; -} - -// Remove an item from the store, nice and simple. -function removeItem$2(key, callback) { - var self = this; - - // Cast the key to a string, as that's all we can set as a key. - if (typeof key !== 'string') { - console.warn(key + ' used as a key, but it is not a string.'); - key = String(key); - } - - var promise = self.ready().then(function () { - var dbInfo = self._dbInfo; - localStorage.removeItem(dbInfo.keyPrefix + key); - }); - - executeCallback(promise, callback); - return promise; -} - -// Set a key's value and run an optional callback once the value is set. -// Unlike Gaia's implementation, the callback function is passed the value, -// in case you want to operate on that value only after you're sure it -// saved, or something like that. -function setItem$2(key, value, callback) { - var self = this; - - // Cast the key to a string, as that's all we can set as a key. - if (typeof key !== 'string') { - console.warn(key + ' used as a key, but it is not a string.'); - key = String(key); - } - - var promise = self.ready().then(function () { - // Convert undefined values to null. - // https://github.com/mozilla/localForage/pull/42 - if (value === undefined) { - value = null; - } - - // Save the original value to pass to the callback. - var originalValue = value; - - return new Promise$1(function (resolve, reject) { - var dbInfo = self._dbInfo; - dbInfo.serializer.serialize(value, function (value, error) { - if (error) { - reject(error); - } else { - try { - localStorage.setItem(dbInfo.keyPrefix + key, value); - resolve(originalValue); - } catch (e) { - // localStorage capacity exceeded. - // TODO: Make this a specific error/event. - if (e.name === 'QuotaExceededError' || e.name === 'NS_ERROR_DOM_QUOTA_REACHED') { - reject(e); - } - reject(e); - } - } - }); - }); - }); - - executeCallback(promise, callback); - return promise; -} - -var localStorageWrapper = { - _driver: 'localStorageWrapper', - _initStorage: _initStorage$2, - // Default API, from Gaia/localStorage. - iterate: iterate$2, - getItem: getItem$2, - setItem: setItem$2, - removeItem: removeItem$2, - clear: clear$2, - length: length$2, - key: key$2, - keys: keys$2 -}; - -// Custom drivers are stored here when `defineDriver()` is called. -// They are shared across all instances of localForage. -var CustomDrivers = {}; - -var DriverType = { - INDEXEDDB: 'asyncStorage', - LOCALSTORAGE: 'localStorageWrapper', - WEBSQL: 'webSQLStorage' -}; - -var DefaultDriverOrder = [DriverType.INDEXEDDB, DriverType.WEBSQL, DriverType.LOCALSTORAGE]; - -var LibraryMethods = ['clear', 'getItem', 'iterate', 'key', 'keys', 'length', 'removeItem', 'setItem']; - -var DefaultConfig = { - description: '', - driver: DefaultDriverOrder.slice(), - name: 'localforage', - // Default DB size is _JUST UNDER_ 5MB, as it's the highest size - // we can use without a prompt. - size: 4980736, - storeName: 'keyvaluepairs', - version: 1.0 -}; - -var driverSupport = {}; -// Check to see if IndexedDB is available and if it is the latest -// implementation; it's our preferred backend library. We use "_spec_test" -// as the name of the database because it's not the one we'll operate on, -// but it's useful to make sure its using the right spec. -// See: https://github.com/mozilla/localForage/issues/128 -driverSupport[DriverType.INDEXEDDB] = isIndexedDBValid(); - -driverSupport[DriverType.WEBSQL] = isWebSQLValid(); - -driverSupport[DriverType.LOCALSTORAGE] = isLocalStorageValid(); - -var isArray = Array.isArray || function (arg) { - return Object.prototype.toString.call(arg) === '[object Array]'; -}; - -function callWhenReady(localForageInstance, libraryMethod) { - localForageInstance[libraryMethod] = function () { - var _args = arguments; - return localForageInstance.ready().then(function () { - return localForageInstance[libraryMethod].apply(localForageInstance, _args); - }); - }; -} - -function extend() { - for (var i = 1; i < arguments.length; i++) { - var arg = arguments[i]; - - if (arg) { - for (var key in arg) { - if (arg.hasOwnProperty(key)) { - if (isArray(arg[key])) { - arguments[0][key] = arg[key].slice(); - } else { - arguments[0][key] = arg[key]; - } - } - } - } - } - - return arguments[0]; -} - -function isLibraryDriver(driverName) { - for (var driver in DriverType) { - if (DriverType.hasOwnProperty(driver) && DriverType[driver] === driverName) { - return true; - } - } - - return false; -} - -var LocalForage = function () { - function LocalForage(options) { - _classCallCheck(this, LocalForage); - - this.INDEXEDDB = DriverType.INDEXEDDB; - this.LOCALSTORAGE = DriverType.LOCALSTORAGE; - this.WEBSQL = DriverType.WEBSQL; - - this._defaultConfig = extend({}, DefaultConfig); - this._config = extend({}, this._defaultConfig, options); - this._driverSet = null; - this._initDriver = null; - this._ready = false; - this._dbInfo = null; - - this._wrapLibraryMethodsWithReady(); - this.setDriver(this._config.driver)["catch"](function () {}); - } - - // Set any config values for localForage; can be called anytime before - // the first API call (e.g. `getItem`, `setItem`). - // We loop through options so we don't overwrite existing config - // values. - - - LocalForage.prototype.config = function config(options) { - // If the options argument is an object, we use it to set values. - // Otherwise, we return either a specified config value or all - // config values. - if ((typeof options === 'undefined' ? 'undefined' : _typeof(options)) === 'object') { - // If localforage is ready and fully initialized, we can't set - // any new configuration values. Instead, we return an error. - if (this._ready) { - return new Error("Can't call config() after localforage " + 'has been used.'); - } - - for (var i in options) { - if (i === 'storeName') { - options[i] = options[i].replace(/\W/g, '_'); - } - - if (i === 'version' && typeof options[i] !== 'number') { - return new Error('Database version must be a number.'); - } - - this._config[i] = options[i]; - } - - // after all config options are set and - // the driver option is used, try setting it - if ('driver' in options && options.driver) { - return this.setDriver(this._config.driver); - } - - return true; - } else if (typeof options === 'string') { - return this._config[options]; - } else { - return this._config; - } - }; - - // Used to define a custom driver, shared across all instances of - // localForage. - - - LocalForage.prototype.defineDriver = function defineDriver(driverObject, callback, errorCallback) { - var promise = new Promise$1(function (resolve, reject) { - try { - var driverName = driverObject._driver; - var complianceError = new Error('Custom driver not compliant; see ' + 'https://mozilla.github.io/localForage/#definedriver'); - var namingError = new Error('Custom driver name already in use: ' + driverObject._driver); - - // A driver name should be defined and not overlap with the - // library-defined, default drivers. - if (!driverObject._driver) { - reject(complianceError); - return; - } - if (isLibraryDriver(driverObject._driver)) { - reject(namingError); - return; - } - - var customDriverMethods = LibraryMethods.concat('_initStorage'); - for (var i = 0; i < customDriverMethods.length; i++) { - var customDriverMethod = customDriverMethods[i]; - if (!customDriverMethod || !driverObject[customDriverMethod] || typeof driverObject[customDriverMethod] !== 'function') { - reject(complianceError); - return; - } - } - - var supportPromise = Promise$1.resolve(true); - if ('_support' in driverObject) { - if (driverObject._support && typeof driverObject._support === 'function') { - supportPromise = driverObject._support(); - } else { - supportPromise = Promise$1.resolve(!!driverObject._support); - } - } - - supportPromise.then(function (supportResult) { - driverSupport[driverName] = supportResult; - CustomDrivers[driverName] = driverObject; - resolve(); - }, reject); - } catch (e) { - reject(e); - } - }); - - executeTwoCallbacks(promise, callback, errorCallback); - return promise; - }; - - LocalForage.prototype.driver = function driver() { - return this._driver || null; - }; - - LocalForage.prototype.getDriver = function getDriver(driverName, callback, errorCallback) { - var self = this; - var getDriverPromise = Promise$1.resolve().then(function () { - if (isLibraryDriver(driverName)) { - switch (driverName) { - case self.INDEXEDDB: - return asyncStorage; - case self.LOCALSTORAGE: - return localStorageWrapper; - case self.WEBSQL: - return webSQLStorage; - } - } else if (CustomDrivers[driverName]) { - return CustomDrivers[driverName]; - } else { - throw new Error('Driver not found.'); - } - }); - executeTwoCallbacks(getDriverPromise, callback, errorCallback); - return getDriverPromise; - }; - - LocalForage.prototype.getSerializer = function getSerializer(callback) { - var serializerPromise = Promise$1.resolve(localforageSerializer); - executeTwoCallbacks(serializerPromise, callback); - return serializerPromise; - }; - - LocalForage.prototype.ready = function ready(callback) { - var self = this; - - var promise = self._driverSet.then(function () { - if (self._ready === null) { - self._ready = self._initDriver(); - } - - return self._ready; - }); - - executeTwoCallbacks(promise, callback, callback); - return promise; - }; - - LocalForage.prototype.setDriver = function setDriver(drivers, callback, errorCallback) { - var self = this; - - if (!isArray(drivers)) { - drivers = [drivers]; - } - - var supportedDrivers = this._getSupportedDrivers(drivers); - - function setDriverToConfig() { - self._config.driver = self.driver(); - } - - function extendSelfWithDriver(driver) { - self._extend(driver); - setDriverToConfig(); - - self._ready = self._initStorage(self._config); - return self._ready; - } - - function initDriver(supportedDrivers) { - return function () { - var currentDriverIndex = 0; - - function driverPromiseLoop() { - while (currentDriverIndex < supportedDrivers.length) { - var driverName = supportedDrivers[currentDriverIndex]; - currentDriverIndex++; - - self._dbInfo = null; - self._ready = null; - - return self.getDriver(driverName).then(extendSelfWithDriver)["catch"](driverPromiseLoop); - } - - setDriverToConfig(); - var error = new Error('No available storage method found.'); - self._driverSet = Promise$1.reject(error); - return self._driverSet; - } - - return driverPromiseLoop(); - }; - } - - // There might be a driver initialization in progress - // so wait for it to finish in order to avoid a possible - // race condition to set _dbInfo - var oldDriverSetDone = this._driverSet !== null ? this._driverSet["catch"](function () { - return Promise$1.resolve(); - }) : Promise$1.resolve(); - - this._driverSet = oldDriverSetDone.then(function () { - var driverName = supportedDrivers[0]; - self._dbInfo = null; - self._ready = null; - - return self.getDriver(driverName).then(function (driver) { - self._driver = driver._driver; - setDriverToConfig(); - self._wrapLibraryMethodsWithReady(); - self._initDriver = initDriver(supportedDrivers); - }); - })["catch"](function () { - setDriverToConfig(); - var error = new Error('No available storage method found.'); - self._driverSet = Promise$1.reject(error); - return self._driverSet; - }); - - executeTwoCallbacks(this._driverSet, callback, errorCallback); - return this._driverSet; - }; - - LocalForage.prototype.supports = function supports(driverName) { - return !!driverSupport[driverName]; - }; - - LocalForage.prototype._extend = function _extend(libraryMethodsAndProperties) { - extend(this, libraryMethodsAndProperties); - }; - - LocalForage.prototype._getSupportedDrivers = function _getSupportedDrivers(drivers) { - var supportedDrivers = []; - for (var i = 0, len = drivers.length; i < len; i++) { - var driverName = drivers[i]; - if (this.supports(driverName)) { - supportedDrivers.push(driverName); - } - } - return supportedDrivers; - }; - - LocalForage.prototype._wrapLibraryMethodsWithReady = function _wrapLibraryMethodsWithReady() { - // Add a stub for each driver API method that delays the call to the - // corresponding driver method until localForage is ready. These stubs - // will be replaced by the driver methods as soon as the driver is - // loaded, so there is no performance impact. - for (var i = 0; i < LibraryMethods.length; i++) { - callWhenReady(this, LibraryMethods[i]); - } - }; - - LocalForage.prototype.createInstance = function createInstance(options) { - return new LocalForage(options); - }; - - return LocalForage; -}(); - -// The actual localForage object that we expose as a module or via a -// global. It's extended by pulling in one of our other libraries. - - -var localforage_js = new LocalForage(); - -module.exports = localforage_js; - -},{"undefined":undefined}]},{},[1])(1) -});
\ No newline at end of file |