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alexandre_ |
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/*
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Copyright (c) 2004-2006, The Dojo Foundation
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All Rights Reserved.
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Licensed under the Academic Free License version 2.1 or above OR the
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modified BSD license. For more information on Dojo licensing, see:
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http://dojotoolkit.org/community/licensing.shtml
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*/
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dojo.provide("dojo.data.CsvStore");
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dojo.require("dojo.data.core.RemoteStore");
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dojo.require("dojo.lang.assert");
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dojo.declare("dojo.data.CsvStore", dojo.data.core.RemoteStore, {_setupQueryRequest:function (result, requestKw) {
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var serverQueryUrl = this._serverQueryUrl ? this._serverQueryUrl : "";
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var queryUrl = result.query ? result.query : "";
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requestKw.url = serverQueryUrl + queryUrl;
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requestKw.method = "get";
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}, _resultToQueryData:function (serverResponseData) {
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var csvFileContentString = serverResponseData;
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var arrayOfArrays = this._getArrayOfArraysFromCsvFileContents(csvFileContentString);
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var arrayOfObjects = this._getArrayOfObjectsFromArrayOfArrays(arrayOfArrays);
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var remoteStoreData = this._getRemoteStoreDataFromArrayOfObjects(arrayOfObjects);
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return remoteStoreData;
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}, _setupSaveRequest:function (saveKeywordArgs, requestKw) {
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}, _getArrayOfArraysFromCsvFileContents:function (csvFileContents) {
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dojo.lang.assertType(csvFileContents, String);
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var lineEndingCharacters = new RegExp("\r\n|\n|\r");
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var leadingWhiteSpaceCharacters = new RegExp("^\\s+", "g");
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var trailingWhiteSpaceCharacters = new RegExp("\\s+$", "g");
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var doubleQuotes = new RegExp("\"\"", "g");
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var arrayOfOutputRecords = [];
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var arrayOfInputLines = csvFileContents.split(lineEndingCharacters);
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for (var i in arrayOfInputLines) {
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var singleLine = arrayOfInputLines[i];
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if (singleLine.length > 0) {
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var listOfFields = singleLine.split(",");
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var j = 0;
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while (j < listOfFields.length) {
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var space_field_space = listOfFields[j];
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var field_space = space_field_space.replace(leadingWhiteSpaceCharacters, "");
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var field = field_space.replace(trailingWhiteSpaceCharacters, "");
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var firstChar = field.charAt(0);
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var lastChar = field.charAt(field.length - 1);
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var secondToLastChar = field.charAt(field.length - 2);
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var thirdToLastChar = field.charAt(field.length - 3);
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if ((firstChar == "\"") && ((lastChar != "\"") || ((lastChar == "\"") && (secondToLastChar == "\"") && (thirdToLastChar != "\"")))) {
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if (j + 1 === listOfFields.length) {
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return null;
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}
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var nextField = listOfFields[j + 1];
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listOfFields[j] = field_space + "," + nextField;
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listOfFields.splice(j + 1, 1);
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} else {
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if ((firstChar == "\"") && (lastChar == "\"")) {
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field = field.slice(1, (field.length - 1));
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field = field.replace(doubleQuotes, "\"");
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}
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listOfFields[j] = field;
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j += 1;
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}
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}
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arrayOfOutputRecords.push(listOfFields);
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}
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}
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return arrayOfOutputRecords;
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}, _getArrayOfObjectsFromArrayOfArrays:function (arrayOfArrays) {
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dojo.lang.assertType(arrayOfArrays, Array);
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var arrayOfItems = [];
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if (arrayOfArrays.length > 1) {
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var arrayOfKeys = arrayOfArrays[0];
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for (var i = 1; i < arrayOfArrays.length; ++i) {
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var row = arrayOfArrays[i];
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var item = {};
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for (var j in row) {
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var value = row[j];
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var key = arrayOfKeys[j];
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item[key] = value;
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}
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arrayOfItems.push(item);
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}
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}
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return arrayOfItems;
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}, _getRemoteStoreDataFromArrayOfObjects:function (arrayOfObjects) {
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dojo.lang.assertType(arrayOfObjects, Array);
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var output = {};
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for (var i = 0; i < arrayOfObjects.length; ++i) {
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var object = arrayOfObjects[i];
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for (var key in object) {
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var value = object[key];
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object[key] = [value];
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}
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output[i] = object;
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}
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return output;
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}, newItem:function (attributes, keywordArgs) {
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dojo.unimplemented("dojo.data.CsvStore.newItem");
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}, deleteItem:function (item) {
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dojo.unimplemented("dojo.data.CsvStore.deleteItem");
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}, setValues:function (item, attribute, values) {
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dojo.unimplemented("dojo.data.CsvStore.setValues");
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}, set:function (item, attribute, value) {
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dojo.unimplemented("dojo.data.CsvStore.set");
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}, unsetAttribute:function (item, attribute) {
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dojo.unimplemented("dojo.data.CsvStore.unsetAttribute");
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}, save:function (keywordArgs) {
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dojo.unimplemented("dojo.data.CsvStore.save");
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}, revert:function () {
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dojo.unimplemented("dojo.data.CsvStore.revert");
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}, isDirty:function (item) {
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dojo.unimplemented("dojo.data.CsvStore.isDirty");
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}});
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