summaryrefslogtreecommitdiff
path: root/www/lib/localforage/src/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'www/lib/localforage/src/drivers')
-rw-r--r--www/lib/localforage/src/drivers/indexeddb.js692
-rw-r--r--www/lib/localforage/src/drivers/localstorage.js270
-rw-r--r--www/lib/localforage/src/drivers/websql.js359
3 files changed, 0 insertions, 1321 deletions
diff --git a/www/lib/localforage/src/drivers/indexeddb.js b/www/lib/localforage/src/drivers/indexeddb.js
deleted file mode 100644
index 51f936dc..00000000
--- a/www/lib/localforage/src/drivers/indexeddb.js
+++ /dev/null
@@ -1,692 +0,0 @@
-import createBlob from '../utils/createBlob';
-import idb from '../utils/idb';
-import Promise from '../utils/promise';
-import executeCallback from '../utils/executeCallback';
-import executeTwoCallbacks from '../utils/executeTwoCallbacks';
-
-// 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(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.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(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(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(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.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.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(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(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(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(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(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(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(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(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
-};
-export default asyncStorage;
diff --git a/www/lib/localforage/src/drivers/localstorage.js b/www/lib/localforage/src/drivers/localstorage.js
deleted file mode 100644
index 85ef32bf..00000000
--- a/www/lib/localforage/src/drivers/localstorage.js
+++ /dev/null
@@ -1,270 +0,0 @@
-// If IndexedDB isn't available, we'll fall back to localStorage.
-// Note that this will have considerable performance and storage
-// side-effects (all data will be serialized on save and only data that
-// can be converted to a string via `JSON.stringify()` will be saved).
-
-import serializer from '../utils/serializer';
-import Promise from '../utils/promise';
-import executeCallback from '../utils/executeCallback';
-
-// Config the localStorage backend, using options set in the config.
-function _initStorage(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 = serializer;
-
- return Promise.resolve();
-}
-
-// Remove all keys from the datastore, effectively destroying all data in
-// the app's key/value store!
-function clear(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(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(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(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(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(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(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(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(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,
- // Default API, from Gaia/localStorage.
- iterate: iterate,
- getItem: getItem,
- setItem: setItem,
- removeItem: removeItem,
- clear: clear,
- length: length,
- key: key,
- keys: keys
-};
-
-export default localStorageWrapper;
diff --git a/www/lib/localforage/src/drivers/websql.js b/www/lib/localforage/src/drivers/websql.js
deleted file mode 100644
index e99398b8..00000000
--- a/www/lib/localforage/src/drivers/websql.js
+++ /dev/null
@@ -1,359 +0,0 @@
-import serializer from '../utils/serializer';
-import Promise from '../utils/promise';
-import executeCallback from '../utils/executeCallback';
-
-/*
- * 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(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(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 = serializer;
- return dbInfoPromise;
-}
-
-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(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(iterator, callback) {
- var self = this;
-
- var promise = new Promise(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(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(key, value, callback) {
- return _setItem.apply(this, [key, value, callback, 1]);
-}
-
-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(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(callback) {
- var self = this;
-
- var promise = new Promise(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(callback) {
- var self = this;
-
- var promise = new Promise(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(n, callback) {
- var self = this;
-
- var promise = new Promise(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(callback) {
- var self = this;
-
- var promise = new Promise(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,
- iterate: iterate,
- getItem: getItem,
- setItem: setItem,
- removeItem: removeItem,
- clear: clear,
- length: length,
- key: key,
- keys: keys
-};
-
-export default webSQLStorage;
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-06 21:58:10 +0000