/// <summary> Print an error message.
/// </summary>
/// <param name="message">The message to print.
/// </param>
/// <param name="exception">The exception for stack tracing.
///
/// </param>
public virtual void Error(string message, ParserException exception)
{
if (mode != QUIET)
{
System.Console.Out.WriteLine("ERROR: " + message);
if (mode == DEBUG && (exception != null))
{
SupportClass.WriteStackTrace(exception, Console.Error);
}
}
}
private Node ReadElement()
{
try
{
return(reader.ReadElement());
}
catch (System.Exception e)
{
System.Text.StringBuilder msgBuffer = new System.Text.StringBuilder();
msgBuffer.Append("Unexpected Exception occurred while reading ");
msgBuffer.Append(resourceLocn);
msgBuffer.Append(", in nextHTMLNode");
reader.AppendLineDetails(msgBuffer);
ParserException ex = new ParserException(msgBuffer.ToString(), e);
feedback.Error(msgBuffer.ToString(), ex);
throw ex;
}
}
public virtual void Error(string message, ParserException e)
{
}
public NodeIterator CreateNodeIterator(bool remove_scanner, NodeIterator ret)
{
Node node;
MetaTag meta;
string httpEquiv;
string charset;
EndTag end;
if (null != url)
{
try
{
if (null == scanners["-m"])
{
AddScanner(new MetaTagScanner("-m"));
remove_scanner = true;
}
/* Read up to </HEAD> looking for charset directive */
while (ret.MoveNext())
{
node = (Node)ret.Current;
if (node is MetaTag)
{
// check for charset on Content-Type
meta = (MetaTag)node;
httpEquiv = meta["HTTP-EQUIV"];
if ("Content-Type".ToUpper().Equals(httpEquiv.ToUpper()))
{
charset = getCharset(meta["CONTENT"]);
if (!charset.ToUpper().Equals(character_set.ToUpper()))
{
// oops, different character set, restart
character_set = charset;
}
// once we see the Content-Type meta tag we're finished the pre-read
break;
}
}
else if (node is EndTag)
{
end = (EndTag)node;
if (end.TagName.ToUpper().Equals("HEAD".ToUpper()))
{
// or, once we see the </HEAD> tag we're finished the pre-read
break;
}
}
}
// Reset the reader
RecreateReader();
ret = new NodeIterator(reader, resourceLocn, feedback);
}
/* TODO catch (UnsupportedEncodingException uee)
* {
* string msg = "elements() : The content of " + url.RequestUri.ToString() + " has an encoding which is not supported";
* ParserException ex = new ParserException(msg, uee);
* feedback.Error(msg, ex);
* throw ex;
* }
*/
catch (IOException ioe)
{
string msg = "elements() : Error in opening a connection to " + url.RequestUri.ToString();
ParserException ex = new ParserException(msg, ioe);
feedback.Error(msg, ex);
throw ex;
}
}
public static void error(string message, ParserException e)
{
callback.Error(message, e);
}