private static XDoc FromHtml(TextReader reader)
{
Sgml.SgmlReader sgmlReader = new Sgml.SgmlReader(XDoc.XmlNameTable)
{
Dtd = _dtd,
DocType = "HTML",
WhitespaceHandling = WhitespaceHandling.All,
CaseFolding = Sgml.CaseFolding.ToLower,
InputStream = reader
};
try {
XmlDocument doc = XDoc.NewXmlDocument();
doc.Load(sgmlReader);
if (doc.DocumentElement == null)
{
return(XDoc.Empty);
}
if (_dtd == null)
{
_dtd = sgmlReader.Dtd;
}
return(new XDoc(doc));
} catch (Exception) {
return(XDoc.Empty);
}
}
public static XDoc WebHtml(
[DekiScriptParam("HTML source text or source uri (default: none)", true)] string source,
[DekiScriptParam("xpath to value (default: none)", true)] string xpath,
[DekiScriptParam("namespaces (default: none)", true)] Hashtable namespaces,
[DekiScriptParam("caching duration in seconds (range: 60 - 86400; default: 300)", true)] double?ttl,
[DekiScriptParam("return nil if source could not be loaded (default: text with error message)", true)] bool?nilIfMissing
)
{
string text = WebText(source, xpath, namespaces, true, ttl, nilIfMissing);
if (text == null)
{
return(null);
}
// convert text to html without a converter
XDoc result = XDoc.Empty;
using (TextReader reader = new StringReader("<html><body>" + text + "</body></html>")) {
// NOTE (steveb): we create the sgml reader explicitly since we don't want a DTD to be associated with it; the DTD would force a potentially unwanted HTML structure
// check if HTML entities DTD has already been loaded
if (_htmlEntitiesDtd == null)
{
using (StreamReader dtdReader = new StreamReader(Plug.New("resource://mindtouch.deki.script/MindTouch.Deki.Script.Resources.HtmlEntities.dtd").Get().AsStream())) {
_htmlEntitiesDtd = Sgml.SgmlDtd.Parse(null, "HTML", dtdReader, null, null, XDoc.XmlNameTable);
}
}
Sgml.SgmlReader sgmlReader = new Sgml.SgmlReader(XDoc.XmlNameTable);
sgmlReader.Dtd = _htmlEntitiesDtd;
sgmlReader.DocType = "HTML";
sgmlReader.WhitespaceHandling = WhitespaceHandling.All;
sgmlReader.CaseFolding = Sgml.CaseFolding.ToLower;
sgmlReader.InputStream = reader;
try {
XmlDocument doc = new XmlDocument(XDoc.XmlNameTable)
{
PreserveWhitespace = true,
XmlResolver = null
};
doc.Load(sgmlReader);
// check if a valid document was created
if (doc.DocumentElement != null)
{
result = new XDoc(doc);
}
} catch {
// swallow parsing exceptions
}
}
return(CleanseHtmlDocument(result));
}
public XDoc WebHtml(
[DekiExtParam("HTML source text or source uri (default: none)", true)] string source,
[DekiExtParam("xpath to value (default: none)", true)] string xpath,
[DekiExtParam("namespaces (default: none)", true)] Hashtable namespaces,
[DekiExtParam("caching duration in seconds (range: 300+; default: 300)", true)] double? ttl
) {
string text = WebText(source, xpath, namespaces, true, ttl);
// convert text to html
XDoc result = XDoc.Empty;
using(TextReader reader = new StringReader("<html><body>" + text + "</body></html>")) {
// NOTE (steveb): we create the sgml reader explicitly since we don't want a DTD to be associated with it; the DTD would force a potentially unwanted HTML structure
// check if HTML entities DTD has already been loaded
if(_htmlEntitiesDtd == null) {
using(StreamReader dtdReader = new StreamReader(Plug.New("resource://mindtouch.deki.script/MindTouch.Deki.Script.HtmlEntities.dtd").Get().AsStream())) {
_htmlEntitiesDtd = Sgml.SgmlDtd.Parse(null, "HTML", dtdReader, null, null, XDoc.XmlNameTable);
}
}
Sgml.SgmlReader sgmlReader = new Sgml.SgmlReader(XDoc.XmlNameTable);
sgmlReader.Dtd = _htmlEntitiesDtd;
sgmlReader.DocType = "HTML";
sgmlReader.WhitespaceHandling = WhitespaceHandling.All;
sgmlReader.CaseFolding = Sgml.CaseFolding.ToLower;
sgmlReader.InputStream = reader;
try {
XmlDocument doc = new XmlDocument(XDoc.XmlNameTable);
doc.PreserveWhitespace = true;
doc.XmlResolver = null;
doc.Load(sgmlReader);
// check if a valid document was created
if(doc.DocumentElement != null) {
result = new XDoc(doc);
}
} catch(Exception) {
// swallow parsing exceptions
}
}
return DekiScriptLibrary.CleanseHtmlDocument(result);
}
private static XDoc FromHtml(TextReader reader)
{
Sgml.SgmlReader sgmlReader = new Sgml.SgmlReader(XDoc.XmlNameTable) {
Dtd = _dtd,
DocType = "HTML",
WhitespaceHandling = WhitespaceHandling.All,
CaseFolding = Sgml.CaseFolding.ToLower,
InputStream = reader
};
try {
XmlDocument doc = XDoc.NewXmlDocument();
doc.Load(sgmlReader);
if(doc.DocumentElement == null) {
return XDoc.Empty;
}
if(_dtd == null) {
_dtd = sgmlReader.Dtd;
}
return new XDoc(doc);
} catch(Exception) {
return XDoc.Empty;
}
}
