// SpryCSVDataSet.js - version 0.1 - Spry Pre-Release 1.6
//
// Copyright (c) 2007. Adobe Systems Incorporated.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//   * Neither the name of Adobe Systems Incorporated nor the names of its
//     contributors may be used to endorse or promote products derived from this
//     software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

Spry.Data.CSVDataSet=function(dataSetURL,dataSetOptions)
{Spry.Data.HTTPSourceDataSet.call(this,dataSetURL,dataSetOptions);this.firstRowAsHeaders=true;this.columnNames=[];Spry.Utils.setOptions(this,dataSetOptions);};Spry.Data.CSVDataSet.prototype=new Spry.Data.HTTPSourceDataSet();Spry.Data.CSVDataSet.prototype.constructor=Spry.Data.CSVDataSet;Spry.Data.CSVDataSet.prototype.getDataRefStrings=function()
{var strArr=[];if(this.url)strArr.push(this.url);return strArr;};Spry.Data.CSVDataSet.prototype.getDocument=function(){return this.doc;};Spry.Data.CSVDataSet.cleanFieldString=function(str)
{str=str.replace(/\s*(\r\n)\s*/g,"$1");str=str.replace(/^[ \t]*"?|"?\s*,?\s*$/g,"");return str.replace(/""/g,'"');};Spry.Data.CSVDataSet.prototype.columnNumberToColumnName=function(colNum)
{var colName=this.columnNames[colNum];if(!colName)
colName="column"+colNum;return colName;};Spry.Data.CSVDataSet.prototype.loadDataIntoDataSet=function(rawDataDoc)
{var data=new Array();var dataHash=new Object();var s=rawDataDoc?rawDataDoc:"";var strLen=s.length;var i=0;var done=false;var firstRowAsHeaders=this.firstRowAsHeaders;var searchStartIndex=0;var regexp=/([ \t]*"([^"]|"")*"[ \t]*,?)|([ \t]*[^",\r\n]+[ \t]*,?)|[ \t]*(\r\n|\r|\n)/mg;var results=regexp.exec(s);var rowObj=null;var columnNum=-1;var rowID=0;while(results&&results[0])
{var f=Spry.Data.CSVDataSet.cleanFieldString(results[0]);if(f=="\r\n"||f=="\r"||f=="\n")
{if(!firstRowAsHeaders)
{rowObj.ds_RowID=rowID++;data.push(rowObj);rowObj=null;}
firstRowAsHeaders=false;columnNum=-1;}
else
{if(firstRowAsHeaders)
this.columnNames[++columnNum]=f;else
{if(++columnNum==0)
rowObj=new Object;rowObj[this.columnNumberToColumnName(columnNum)]=f;}}
searchStartIndex=regexp.lastIndex;results=regexp.exec(s);}
this.doc=rawDataDoc;this.data=data;this.dataHash=dataHash;this.dataWasLoaded=(this.doc!=null);};