// SpryTSVDataSet.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
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
// POSSIBILITY OF SUCH DAMAGE.
|
|
Spry.Data.TSVDataSet = function(dataSetURL, dataSetOptions)
|
{
|
// Call the constructor for our HTTPSourceDataSet base class so that
|
// our base class properties get defined.
|
|
Spry.Data.HTTPSourceDataSet.call(this, dataSetURL, dataSetOptions);
|
|
this.delimiter = "\t";
|
this.firstRowAsHeaders = true;
|
this.columnNames = [];
|
this.columnNames = [];
|
|
Spry.Utils.setOptions(this, dataSetOptions);
|
}; // End of Spry.Data.TSVDataSet() constructor.
|
|
Spry.Data.TSVDataSet.prototype = new Spry.Data.HTTPSourceDataSet();
|
Spry.Data.TSVDataSet.prototype.constructor = Spry.Data.TSVDataSet;
|
|
// Override the inherited version of getDataRefStrings() with our
|
// own version that returns the strings memebers we maintain that
|
// may have data references in them.
|
|
Spry.Data.TSVDataSet.prototype.getDataRefStrings = function()
|
{
|
var strArr = [];
|
if (this.url) strArr.push(this.url);
|
return strArr;
|
};
|
|
Spry.Data.TSVDataSet.prototype.getDocument = function() { return this.doc; };
|
|
Spry.Data.TSVDataSet.prototype.columnNumberToColumnName = function(colNum)
|
{
|
var colName = this.columnNames[colNum];
|
if (!colName)
|
colName = "column" + colNum;
|
return colName;
|
};
|
|
// Translate the raw TSV string (rawDataDoc) into an array of row objects.
|
|
Spry.Data.TSVDataSet.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 = /[^\r\n]+|(\r\n|\r|\n)/mg;
|
|
var results = regexp.exec(s);
|
var rowObj = null;
|
var columnNum = -1;
|
var rowID = 0;
|
|
while (results && results[0])
|
{
|
var r = results[0];
|
if (r == "\r\n" || r == "\r" || r == "\n")
|
{
|
if (!firstRowAsHeaders)
|
{
|
rowObj.ds_RowID = rowID++;
|
data.push(rowObj);
|
rowObj = null;
|
}
|
firstRowAsHeaders = false;
|
columnNum = -1;
|
}
|
else
|
{
|
var fields = r.split(this.delimiter);
|
for (var i = 0; i < fields.length; i++)
|
{
|
if (firstRowAsHeaders)
|
this.columnNames[++columnNum] = fields[i];
|
else
|
{
|
if (++columnNum == 0)
|
rowObj = new Object;
|
rowObj[this.columnNumberToColumnName(columnNum)] = fields[i];
|
}
|
}
|
}
|
|
searchStartIndex = regexp.lastIndex;
|
results = regexp.exec(s);
|
}
|
|
this.doc = rawDataDoc;
|
this.data = data;
|
this.dataHash = dataHash;
|
this.dataWasLoaded = (this.doc != null);
|
};
|
