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Firefox: implement vAPI.storage via SQLite
This commit is contained in:
Deathamns
gorhill
parent
54868d149a
commit
cba32c8eb4
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@ -43,6 +43,180 @@ vAPI.firefox = true;
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/******************************************************************************/
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var SQLite = {
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open: function() {
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var path = Services.dirsvc.get('ProfD', Ci.nsIFile);
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path.append('extension-data');
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if (!path.exists()) {
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path.create(Ci.nsIFile.DIRECTORY_TYPE, parseInt('0774', 8));
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}
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if (!path.isDirectory()) {
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throw Error('Should be a directory...');
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}
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path.append('uBlock.sqlite');
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this.db = Services.storage.openDatabase(path);
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this.db.executeSimpleSQL(
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'CREATE TABLE IF NOT EXISTS settings' +
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'(name TEXT PRIMARY KEY NOT NULL, value TEXT);'
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);
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},
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close: function() {
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this.run('VACUUM');
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this.db.asyncClose();
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},
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run: function(query, values, callback) {
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if (!this.db) {
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this.open();
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}
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var result = {};
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query = this.db.createAsyncStatement(query);
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if (Array.isArray(values) && values.length) {
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var i = values.length;
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while (i--) {
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query.bindByIndex(i, values[i]);
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}
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}
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query.executeAsync({
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handleResult: function(rows) {
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if (!rows || typeof callback !== 'function') {
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return;
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}
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var row;
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while (row = rows.getNextRow()) {
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// we assume that there will be two columns, since we're
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// using it only for preferences
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result[row.getResultByIndex(0)] = row.getResultByIndex(1);
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}
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},
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handleCompletion: function(reason) {
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if (typeof callback === 'function' && reason === 0) {
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callback(result);
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}
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},
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handleError: function(error) {
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console.error('SQLite error ', error.result, error.message);
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}
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});
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}
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};
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/******************************************************************************/
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vAPI.storage = {
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QUOTA_BYTES: 100 * 1024 * 1024,
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sqlWhere: function(col, valNum) {
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if (valNum > 0) {
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valNum = Array(valNum + 1).join('?, ').slice(0, -2);
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return ' WHERE ' + col + ' IN (' + valNum + ')';
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}
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return '';
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},
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get: function(details, callback) {
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if (typeof callback !== 'function') {
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return;
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}
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var values = [], defaults = false;
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if (details !== null) {
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if (Array.isArray(details)) {
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values = details;
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}
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else if (typeof details === 'object') {
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defaults = true;
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values = Object.keys(details);
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}
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else {
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values = [details.toString()];
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}
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}
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SQLite.run(
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'SELECT * FROM settings' + this.sqlWhere('name', values.length),
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values,
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function(result) {
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var key;
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for (key in result) {
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result[key] = JSON.parse(result[key]);
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}
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if (defaults) {
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for (key in details) {
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if (!result[key]) {
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result[key] = details[key];
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}
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}
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}
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callback(result);
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}
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);
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},
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set: function(details, callback) {
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var key, values = [], questionmarks = [];
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for (key in details) {
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values.push(key);
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values.push(JSON.stringify(details[key]));
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questionmarks.push('?, ?');
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}
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if (!values.length) {
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return;
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}
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SQLite.run(
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'INSERT OR REPLACE INTO settings (name, value) SELECT ' +
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questionmarks.join(' UNION SELECT '),
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values,
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callback
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);
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},
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remove: function(keys, callback) {
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if (typeof keys === 'string') {
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keys = [keys];
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}
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SQLite.run(
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'DELETE FROM settings' + this.sqlWhere('name', keys.length),
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keys,
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callback
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);
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},
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clear: function(callback) {
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SQLite.run('DELETE FROM settings', null, callback);
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SQLite.run('VACUUM');
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},
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getBytesInUse: function(keys, callback) {
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if (typeof callback !== 'function') {
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return;
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}
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SQLite.run(
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"SELECT 'size' AS size, SUM(LENGTH(value)) FROM settings" +
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this.sqlWhere('name', Array.isArray(keys) ? keys.length : 0),
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keys,
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function(result) {
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callback(result.size);
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}
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);
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}
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};
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/******************************************************************************/
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vAPI.messaging = {
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gmm: Cc['@mozilla.org/globalmessagemanager;1'].getService(Ci.nsIMessageListenerManager),
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frameScript: 'chrome://ublock/content/frameScript.js',
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@ -133,8 +307,11 @@ vAPI.messaging.setup = function(defaultHandler) {
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/******************************************************************************/
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vAPI.messaging.broadcast = function(msg) {
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this.gmm.broadcastAsyncMessage(vAPI.app.name + ':broadcast', msg);
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vAPI.messaging.broadcast = function(message) {
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this.gmm.broadcastAsyncMessage(
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vAPI.app.name + ':broadcast',
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JSON.stringify({broadcast: true, msg: message})
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);
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};
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/******************************************************************************/
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@ -148,8 +325,9 @@ vAPI.lastError = function() {
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// clean up when the extension is disabled
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window.addEventListener('unload', function() {
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SQLite.close();
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vAPI.messaging.gmm.removeMessageListener(
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app.name + ':background',
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vAPI.app.name + ':background',
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vAPI.messaging.postMessage
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);
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vAPI.messaging.gmm.removeDelayedFrameScript(vAPI.messaging.frameScript);
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