private FictionBook ReadFictionBook(TextReader stream)
{
SgmlReader reader = new SgmlReader();
reader.InputStream = stream;
if (this.fb2Dtd == null)
{
reader.SystemLiteral = options.dtdFile;
this.fb2Dtd = reader.Dtd;
}
else
{
reader.Dtd = this.fb2Dtd;
}
FictionBook fictionBook = ReadFictionBook(reader);
if(reader.MarkupErrorsCount > 0)
{
fictionBook.ModificationType = ModificationType.Body;
}
return fictionBook;
}
public bool CanContain(string name, SgmlDtd dtd)
{
// return true if this element is allowed to contain the given element.
if (this.exclusions != null)
{
if(this.exclusions.Contains(name))
{
return false;
}
}
if (this.inclusions != null)
{
if(this.inclusions.Contains(name))
{
return true;
}
}
return ContentModel.CanContain(name, dtd);
}
public static SgmlDtd Parse(Uri baseUri, string name, string pubid, TextReader input, string subset, string proxy, XmlNameTable nt)
{
SgmlDtd dtd = new SgmlDtd(name, nt);
dtd.PushEntity(baseUri, new Entity(dtd.Name, baseUri, input, proxy));
if (!string.IsNullOrEmpty(subset))
{
dtd.PushEntity(baseUri, new Entity(name, subset));
}
try
{
dtd.Parse();
}
catch (Exception e)
{
throw new Exception(e.Message + dtd.current.Context());
}
return dtd;
}
public bool CanContain(string name, SgmlDtd dtd)
{
if (DeclaredContent != DeclaredContent.Default)
{
return false;
} // empty or text only node.
return Model.CanContain(name, dtd);
}
// Rough approximation - this is really assuming an "Or" group
public bool CanContain(string name, SgmlDtd dtd)
{
//foreach (object obj in this.members)
//{
// if (obj is String)
// {
// if (obj == (object) name) // XmlNameTable optimization
// {
// return true;
// }
// }
//}
// Do a simple search of members.
if (this.symbols.Contains(name))
{
return true;
}
// didn't find it, so do a more expensive search over child elements
// that have optional start tags and over child groups.
foreach (object obj in this.members)
{
string symbol = obj as String;
if (symbol != null)
{
ElementDecl elementDecl = dtd.FindElement(symbol);
if (elementDecl != null)
{
if (elementDecl.StartTagOptional)
{
// tricky case, the start tag is optional so element may be allowed inside this guy!
if (elementDecl.CanContain(name, dtd))
{
return true;
}
}
}
}
else
{
Group group = (Group) obj;
if (group.CanContain(name, dtd))
{
return true;
}
}
}
return false;
}
