more templates back into cli

middleman-cli/lib/middleman-templates/mobile/source/tools/wspl/gearsutils.js

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+/*
+  Copyright 2009 Google Inc.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+*/
+
+/**
+ * @fileoverview Some simple utilities for supporting Gears usage.
+ */
+google.wspl.GearsUtils = google.wspl.GearsUtils || {};
+
+/**
+ * Returns an array of hash objects, one per row in the result set,
+ * where the column names in the query are used as the members of
+ * the object.
+ *
+ * @param {GearsResultSet} rs the result set returned by execute.
+ * @return {Array.<Object>} An array containing hashes. Returns an empty
+ *     array if there are no matching rows.
+ */
+google.wspl.GearsUtils.resultSetToObjectArray = function(rs) {
+  var rv = [];
+  if (rs) {
+    var cols = rs['fieldCount']();
+    var colNames = [];
+    for (var i = 0; i < cols; i++) {
+      colNames.push(rs['fieldName'](i));
+    }
+
+    while (rs['isValidRow']()) {
+      var h = {};
+      for (var i = 0; i < cols; i++) {
+        h[colNames[i]] = rs['field'](i);
+      }
+      rv.push(h);
+      rs['next']();
+    }
+  }
+  return rv;
+};
+
+/**
+ * Maximum file name length.
+ * @type {number}
+ * @private
+ */
+google.wspl.GearsUtils.MAX_FILE_NAME_LENGTH_ = 64;
+
+/**
+ * Ensures that the given dbName is safe to use as a Gears database name.
+ * @type {!string} dbName
+ * @return {!string} The sanitized name.
+ * @private
+ */
+google.wspl.GearsUtils.makeSafeFileName_ = function(dbName) {
+  var sanitizedFileName = dbName.replace(/[^a-zA-Z0-9\.\-@_]/g, '');
+  if (sanitizedFileName.length <=
+      google.wspl.GearsUtils.MAX_FILE_NAME_LENGTH_) {
+    return sanitizedFileName;
+  } else {
+    return sanitizedFileName.substring(0,
+        google.wspl.GearsUtils.MAX_FILE_NAME_LENGTH_);
+  }
+};
+
+/**
+ * Opens a Gears Database using the provided userid and name.
+ * @param {string} userId The user to which the database belongs.
+ * @param {string} name The database's name.
+ * @param {GearsDatabase} db The Gears database to open.
+ * @param {function(string)} opt_logger A logger function for writing
+ *     messages.
+ * @return {GearsDatabase} The open GearsDatabase object.
+ */
+google.wspl.GearsUtils.openDatabase = function(userId, name, db,
+    opt_logger) {
+  var dbId = userId + '-' + name;
+  var safeDbId = google.wspl.GearsUtils.makeSafeFileName_(dbId);
+  if (opt_logger && dbId != safeDbId) {
+    opt_logger('database name ' + dbId + '->' + safeDbId);
+  }
+  db.open(safeDbId);
+  return db;
+};