uBlock/platform/webext/from-legacy.js
2017-08-22 08:00:46 -04:00

73 lines
2.6 KiB
JavaScript

/*******************************************************************************
uBlock Origin - a browser extension to block requests.
Copyright (C) 2017 Raymond Hill
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see {http://www.gnu.org/licenses/}.
Home: https://github.com/gorhill/uBlock
*/
// For background page
'use strict';
/******************************************************************************/
(function() {
let µb = µBlock;
let migratedKeys = new Set();
let migrateAll = function(callback) {
let migrateKeyValue = function(details, callback) {
// https://github.com/gorhill/uBlock/issues/2653
// Be ready to deal graciously with corrupted DB.
if ( migratedKeys.has(details.key) ) {
callback();
return;
}
migratedKeys.add(details.key);
let bin = {};
bin[details.key] = JSON.parse(details.value);
self.browser.storage.local.set(bin, callback);
};
let migrateNext = function() {
self.browser.runtime.sendMessage({ what: 'webext:storageMigrateNext' }, response => {
if ( response.key === undefined ) {
if ( migratedKeys.size !== 0 ) {
self.browser.runtime.reload();
} else {
callback();
}
return;
}
migrateKeyValue(response, migrateNext);
});
};
self.browser.storage.local.get('legacyStorageMigrated', bin => {
if ( bin && bin.legacyStorageMigrated ) {
self.browser.runtime.sendMessage({ what: 'webext:storageMigrateDone' });
return callback();
}
self.browser.storage.local.set({ legacyStorageMigrated: true });
migrateNext();
});
};
µb.onBeforeStartQueue.push(migrateAll);
})();
/******************************************************************************/