public string URLGetAuthor(string url, AlchemyAPI_BaseParams parameters)
{
CheckURL(url);
parameters.setUrl(url);
return GET("URLGetAuthor", "url", parameters);
}
public string HTMLGetAuthor(string html, string url, AlchemyAPI_BaseParams parameters)
{
CheckHTML(html, url);
parameters.setHtml(html);
parameters.setUrl(url);
return POST("HTMLGetAuthor", "html", parameters);
}
private string DoRequest(HttpWebRequest wreq, AlchemyAPI_BaseParams.OutputMode outputMode)
{
using (HttpWebResponse wres = wreq.GetResponse() as HttpWebResponse)
{
StreamReader r = new StreamReader(wres.GetResponseStream());
string xml = r.ReadToEnd();
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(xml);
XmlElement root = xmlDoc.DocumentElement;
if (AlchemyAPI_BaseParams.OutputMode.XML == outputMode)
{
XmlNode status = root.SelectSingleNode("/results/status");
if (status.InnerText != "OK")
{
System.ApplicationException ex =
new System.ApplicationException("Error making API call.");
throw ex;
}
}
else if (AlchemyAPI_BaseParams.OutputMode.RDF == outputMode)
{
XmlNamespaceManager nm = new XmlNamespaceManager(xmlDoc.NameTable);
nm.AddNamespace("rdf", "http://www.w3.org/1999/02/22-rdf-syntax-ns#");
nm.AddNamespace("aapi", "http://rdf.alchemyapi.com/rdf/v1/s/aapi-schema#");
XmlNode status = root.SelectSingleNode("/rdf:RDF/rdf:Description/aapi:ResultStatus", nm);
if (status.InnerText != "OK")
{
System.ApplicationException ex =
new System.ApplicationException("Error making API call.");
throw ex;
}
}
return xml;
}
}
private string POST(string callName, string callPrefix, AlchemyAPI_BaseParams parameters)
{ // callMethod, callPrefix, ... params
Uri address = new Uri(_requestUri + callPrefix + "/" + callName);
HttpWebRequest wreq = WebRequest.Create(address) as HttpWebRequest;
wreq.Proxy = GlobalProxySelection.GetEmptyWebProxy();
wreq.Method = "POST";
wreq.ContentType = "application/x-www-form-urlencoded";
StringBuilder d = new StringBuilder();
d.Append("apikey=").Append(_apiKey).Append(parameters.getParameterString());
parameters.resetBaseParams();
byte[] bd = UTF8Encoding.UTF8.GetBytes(d.ToString());
wreq.ContentLength = bd.Length;
using (Stream ps = wreq.GetRequestStream()) { ps.Write(bd, 0, bd.Length); }
return DoRequest(wreq, parameters.getOutputMode());
}
private string GET(string callName, string callPrefix, AlchemyAPI_BaseParams parameters)
{ // callMethod, callPrefix, ... params
StringBuilder uri = new StringBuilder();
uri.Append(_requestUri).Append(callPrefix).Append("/").Append(callName);
uri.Append("?apikey=").Append(_apiKey).Append(parameters.getParameterString());
parameters.resetBaseParams();
Uri address = new Uri(uri.ToString());
HttpWebRequest wreq = WebRequest.Create(address) as HttpWebRequest;
wreq.Proxy = GlobalProxySelection.GetEmptyWebProxy();
wreq.Method = "GET";
return DoRequest(wreq, parameters.getOutputMode());
}
public string TextGetTextSentiment(string text, AlchemyAPI_BaseParams parameters)
{
CheckText(text);
parameters.setText(text);
return POST("TextGetTextSentiment", "text", parameters);
}
public string URLGetTextSentiment(string url, AlchemyAPI_BaseParams parameters)
{
CheckURL(url);
parameters.setUrl(url);
return GET("URLGetTextSentiment", "url", parameters);
}
public string HTMLGetMicroformats(string html, string url, AlchemyAPI_BaseParams parameters)
{
CheckHTML(html, url);
parameters.setHtml(html);
parameters.setUrl(url);
return POST("HTMLGetMicroformatData", "html", parameters);
}
public string URLGetMicroformats(string url, AlchemyAPI_BaseParams parameters)
{
CheckURL(url);
parameters.setUrl(url);
return GET("URLGetMicroformatData", "url", parameters);
}
