/// <summary>
/// Treats all include tags, if there are bad reference on document, catches exception and tries to find fallback, which is treated as document.
/// </summary>
/// <param name="includeNodes">Nodes, which will be replace</param>
/// <param name="document">Document, which contains includeNodes</param>
/// <param name="absoluteUri">Uri of document</param>
/// <param name="nsPrefix">Prefix of include namespace</param>
/// <param name="nsm">Namespace Manager of document</param>
/// <returns></returns>
bool TreatIncludes(XmlElement[] includeNodes, XmlDocument document, string absoluteUri, string nsPrefix, XmlNamespaceManager nsm)
{
foreach (var includeElement in includeNodes)
{
var valueOfXPoiner = includeElement.GetAttribute(atXPointer);
var valueOfHref = includeElement.GetAttribute(atHref);
if (string.IsNullOrEmpty(valueOfHref)) // There must be xpointer Attribute, if not, fatal error..
{
if (string.IsNullOrEmpty(valueOfXPoiner))
{
PhpLibXml.IssueXmlError(_ctx, PhpLibXml.LIBXML_ERR_WARNING, 0, 0, 0, $"DOMDocument::xinclude(): detected a local recursion with no xpointer in {absoluteUri} in {_ctx.MainScriptFile.Path}", absoluteUri);
return(true);
}
_documents.Push(document);
var includeUri = includeElement.BaseURI + valueOfXPoiner;
if (_references.ContainsKey(includeUri)) // fatal error, cycle recursion
{
PhpLibXml.IssueXmlError(_ctx, PhpLibXml.LIBXML_ERR_WARNING, 0, 0, 0, $"DOMDocument::xinclude(): detected a recursion in {absoluteUri} in {_ctx.MainScriptFile.Path}", absoluteUri);
return(true);
}
_references[absoluteUri] = includeUri;
IncludeXml(includeElement.BaseURI, includeElement, null, valueOfXPoiner);
return(false);
}
// Resolving absolute and relative uri...
string uri = UriResolver(valueOfHref, Path.GetDirectoryName(absoluteUri));
// Resolving type of parsing.
string typeOfParse = includeElement.GetAttribute(atParse);
try
{
if (string.Equals(typeOfParse, "text", StringComparison.OrdinalIgnoreCase))
{
_documents.Push(document);
IncludeText(uri, includeElement);
}
else
{
if (_references.ContainsKey(uri + valueOfXPoiner)) // fatal error, cycle recursion
{
PhpLibXml.IssueXmlError(_ctx, PhpLibXml.LIBXML_ERR_WARNING, 0, 0, 0, $"DOMDocument::xinclude(): detected a recursion in {absoluteUri} in {_ctx.MainScriptFile.Path}", absoluteUri);
//return true;
}
else
{
_documents.Push(document);
_references[absoluteUri] = uri + valueOfXPoiner;
IncludeXml(uri, includeElement, null, string.IsNullOrEmpty(valueOfXPoiner) ? null : valueOfXPoiner);
}
}
}
catch (System.IO.FileNotFoundException)
{
PhpLibXml.IssueXmlError(_ctx, PhpLibXml.LIBXML_ERR_WARNING, 0, 0, 0, $"DOMDocument::xinclude(): I/O warning : failed to load external entity "{absoluteUri}" in {_ctx.MainScriptFile.Path}", absoluteUri);
_documents.Pop();
XmlElement[] fallbacks = includeElement.GetElementsByTagName(nsPrefix + ":" + etFallback).OfType <XmlElement>().ToArray <XmlElement>();
if (fallbacks.Length > 1) // fatal error
{
PhpLibXml.IssueXmlError(_ctx, PhpLibXml.LIBXML_ERR_WARNING, 0, 0, 0, $"DOMDocument::xinclude(): include has multiple fallback children in {_ctx.MainScriptFile.Path}", _ctx.MainScriptFile.Path);
return(true);
}
if (fallbacks.Length == 1)
{
XmlElement[] includes = fallbacks[0].SelectNodes($".//{nsPrefix}:{etInclude}[ not( descendant::{nsPrefix}:{etFallback} ) ]", nsm).OfType <XmlElement>().ToArray();
while (fallbacks[0].ChildNodes.Count != 0)
{
includeElement.ParentNode.InsertAfter(fallbacks[0].LastChild, includeElement);
}
TreatIncludes(includes, document, absoluteUri, nsPrefix, nsm);
includeElement.ParentNode.RemoveChild(includeElement);
}
else // error missing fallback
{
PhpLibXml.IssueXmlError(_ctx, PhpLibXml.LIBXML_ERR_WARNING, 0, 0, 0, $"DOMDocument::xinclude(): could not load {absoluteUri}, and no fallback was found in {_ctx.MainScriptFile.Path}", absoluteUri);
return(true);
}
}
_references = new Dictionary <string, string>();
}
return(false);
}
