/// <summary>
/// Performs the search, and returns the results in the range from the start
/// and to the page size index.
/// </summary>
/// <param name="start">Index of where in the total result to return results.</param>
/// <param name="pageSize">Number of results to return.</param>
/// <returns>List of google site search results.</returns>
/// <exception cref="System.NullReferenceException"></exception>
/// <exception cref="System.NotSupportedException"></exception>
/// <exception cref="System.Net.WebException"></exception>
/// <exception cref="System.Xml.XmlException"></exception>
/// <exception cref="System.Xml.XPath.XPathException"></exception>
public virtual List <GoogleSiteSearchResult> Search(string start, string pageSize)
{
if (this._results.Count > 0)
{
this._results.Clear();
}
// Check whether or not a Google customer ID has been defined
if (string.IsNullOrEmpty(this._googleCXNumber))
{
throw new NullReferenceException("Google SiteSearch exception: No CX number have been defined. Make sure the key is added to 'Site config/Search settings'.");
}
string response = this.DoSearch(this.FormatQueryString(this._googleCXNumber, this._q, start, pageSize, this._site));
GoogleSiteSearchParserResult result = this.ParseResult(response);
if (result != null)
{
this.NextResultPageUrl = result.NextUrl;
this.PreviousResultPageUrl = result.PreviousUrl;
this.NumberOfHits = result.Hits;
this._results = result.Result;
}
return(this._results);
}
/// <summary>
/// Parses the specified XML node.
/// </summary>
/// <param name="xmlNode">The XML node.</param>
/// <returns></returns>
public virtual GoogleSiteSearchParserResult Parse(XmlNode xmlNode)
{
GoogleSiteSearchParserResult gssp = new GoogleSiteSearchParserResult();
XmlNode searchResult = GetNode(xmlNode, "RES");
if (searchResult == null || searchResult.ChildNodes.Count <= 0)
{
return gssp;
}
foreach (XmlNode r in searchResult.ChildNodes)
{
if (r.Name == "M")
{
gssp.Hits = r.InnerText;
continue;
}
if (r.Name == "NB")
{
XmlNode next = GetNode(r, "NU");
XmlNode previous = GetNode(r, "PU");
if (next != null)
{
gssp.NextUrl = next.InnerText;
}
if (previous != null)
{
gssp.PreviousUrl = previous.InnerText;
}
continue;
}
if (r.Name == "R")
{
GoogleSiteSearchResult parsedResult = new GoogleSiteSearchResult()
{
Url = GetNode(r, "U").InnerText,
Headline = GetNode(r, "T").InnerText,
Description = GetNode(r, "S").InnerText,
Language = GetNode(r, "LANG").InnerText
};
gssp.Result.Add(parsedResult);
}
}
return gssp;
}
/// <summary>
/// Parses the specified XML node.
/// </summary>
/// <param name="xmlNode">The XML node.</param>
/// <returns></returns>
public virtual GoogleSiteSearchParserResult Parse(XmlNode xmlNode)
{
GoogleSiteSearchParserResult gssp = new GoogleSiteSearchParserResult();
XmlNode searchResult = GetNode(xmlNode, "RES");
if (searchResult == null || searchResult.ChildNodes.Count <= 0)
{
return(gssp);
}
foreach (XmlNode r in searchResult.ChildNodes)
{
if (r.Name == "M")
{
gssp.Hits = r.InnerText;
continue;
}
if (r.Name == "NB")
{
XmlNode next = GetNode(r, "NU");
XmlNode previous = GetNode(r, "PU");
if (next != null)
{
gssp.NextUrl = next.InnerText;
}
if (previous != null)
{
gssp.PreviousUrl = previous.InnerText;
}
continue;
}
if (r.Name == "R")
{
GoogleSiteSearchResult parsedResult = new GoogleSiteSearchResult()
{
Url = GetNode(r, "U").InnerText,
Headline = GetNode(r, "T").InnerText,
Description = GetNode(r, "S").InnerText,
Language = GetNode(r, "LANG").InnerText
};
gssp.Result.Add(parsedResult);
}
}
return(gssp);
}
