private RDFTerm finishStringLiteral(string str)
{
int mark = input.setHardMark();
int ch = input.read();
if (ch == '@')
{
return(RDFTerm.fromLangString(str, readLanguageTag()));
}
else if (ch == '^' && input.read() == '^')
{
ch = input.read();
if (ch == '<')
{
return(RDFTerm.fromTypedString(str, readIriReference()));
}
else
{
throw new ParserException();
}
}
else
{
input.setMarkPosition(mark);
return(RDFTerm.fromTypedString(str));
}
}
private void setObject(RDFTerm _object)
{
if ((_object) == null)
{
throw new ArgumentNullException("object");
}
this._object = _object;
}
public static RDFTerm fromBlankNode(string name)
{
if((name)==null)throw new ArgumentNullException("name");
if((name).Length==0)throw new ArgumentException("name is empty.");
RDFTerm ret=new RDFTerm();
ret.kind=BLANK;
ret.typeOrLanguage=null;
ret.value=name;
return ret;
}
private void setPredicate(RDFTerm predicate)
{
if ((predicate) == null)
{
throw new ArgumentNullException("predicate");
}
if (!(predicate.getKind() == RDFTerm.IRI))
{
throw new ArgumentException("doesn't satisfy predicate.kind==RDFTerm.IRI");
}
this.predicate = predicate;
}
public static RDFTerm fromIRI(string iri)
{
if ((iri) == null)
{
throw new ArgumentNullException("iri");
}
RDFTerm ret = new RDFTerm();
ret.kind = IRI;
ret.typeOrLanguage = null;
ret.value = iri;
return(ret);
}
private void setSubject(RDFTerm subject)
{
if ((subject) == null)
{
throw new ArgumentNullException("subject");
}
if (!(subject.getKind() == RDFTerm.IRI ||
subject.getKind() == RDFTerm.BLANK))
{
throw new ArgumentException("doesn't satisfy subject.kind==RDFTerm.IRI || subject.kind==RDFTerm.BLANK");
}
this.subject = subject;
}
public static RDFTerm fromBlankNode(string name)
{
if ((name) == null)
{
throw new ArgumentNullException("name");
}
if ((name).Length == 0)
{
throw new ArgumentException("name is empty.");
}
RDFTerm ret = new RDFTerm();
ret.kind = BLANK;
ret.typeOrLanguage = null;
ret.value = name;
return(ret);
}
public override sealed bool Equals(object obj)
{
if (this == obj)
{
return(true);
}
if (obj == null)
{
return(false);
}
if (GetType() != obj.GetType())
{
return(false);
}
RDFTerm other = (RDFTerm)obj;
if (kind != other.kind)
{
return(false);
}
if (typeOrLanguage == null)
{
if (other.typeOrLanguage != null)
{
return(false);
}
}
else if (!typeOrLanguage.Equals(other.typeOrLanguage))
{
return(false);
}
if (value == null)
{
if (other.value != null)
{
return(false);
}
}
else if (!value.Equals(other.value))
{
return(false);
}
return(true);
}
public static RDFTerm fromTypedString(string str, string iri)
{
if ((str) == null)
{
throw new ArgumentNullException("str");
}
if ((iri) == null)
{
throw new ArgumentNullException("iri");
}
if ((iri).Length == 0)
{
throw new ArgumentException("iri is empty.");
}
RDFTerm ret = new RDFTerm();
ret.kind = TYPEDSTRING;
ret.typeOrLanguage = iri;
ret.value = str;
return(ret);
}
public static RDFTerm fromLangString(string str, string languageTag)
{
if ((str) == null)
{
throw new ArgumentNullException("str");
}
if ((languageTag) == null)
{
throw new ArgumentNullException("languageTag");
}
if ((languageTag).Length == 0)
{
throw new ArgumentException("languageTag is empty.");
}
RDFTerm ret = new RDFTerm();
ret.kind = LANGSTRING;
ret.typeOrLanguage = languageTag;
ret.value = str;
return(ret);
}
private RDFTerm readObject(bool acceptLiteral)
{
int ch = input.read();
if (ch < 0)
{
throw new ParserException();
}
else if (ch == '<')
{
return(RDFTerm.fromIRI(readIriReference()));
}
else if (acceptLiteral && (ch == '\"')) // start of quote literal
{
string str = readStringLiteral(ch);
return(finishStringLiteral(str));
}
else if (ch == '_') // Blank Node Label
{
if (input.read() != ':')
{
throw new ParserException();
}
string label = readBlankNodeLabel();
RDFTerm term = bnodeLabels[label];
if (term == null)
{
term = RDFTerm.fromBlankNode(label);
bnodeLabels.Add(label, term);
}
return(term);
}
else
{
throw new ParserException();
}
}
private RDFTriple readTriples()
{
int mark = input.setHardMark();
int ch = input.read();
#if DEBUG
if (!((ch >= 0)))
{
throw new InvalidOperationException("ch>=0");
}
#endif
input.setMarkPosition(mark);
RDFTerm subject = readObject(false);
if (!skipWhitespace())
{
throw new ParserException();
}
if (input.read() != '<')
{
throw new ParserException();
}
RDFTerm predicate = RDFTerm.fromIRI(readIriReference());
if (!skipWhitespace())
{
throw new ParserException();
}
RDFTerm obj = readObject(true);
skipWhitespace();
if (input.read() != '.')
{
throw new ParserException();
}
skipWhitespace();
RDFTriple ret = new RDFTriple(subject, predicate, obj);
endOfLine(input.read());
return(ret);
}
public RDFTriple(RDFTerm subject, RDFTerm predicate, RDFTerm _object)
{
setSubject(subject);
setPredicate(predicate);
setObject(_object);
}
private void setPredicate(RDFTerm predicate)
{
if((predicate)==null)throw new ArgumentNullException("predicate");
if(!(predicate.getKind()==RDFTerm.IRI))throw new ArgumentException("doesn't satisfy predicate.kind==RDFTerm.IRI");
this.predicate = predicate;
}
private void setSubject(RDFTerm subject)
{
if((subject)==null)throw new ArgumentNullException("subject");
if(!(subject.getKind()==RDFTerm.IRI ||
subject.getKind()==RDFTerm.BLANK))throw new ArgumentException("doesn't satisfy subject.kind==RDFTerm.IRI || subject.kind==RDFTerm.BLANK");
this.subject = subject;
}
/*
* Replaces certain blank nodes with blank nodes whose
* names meet the N-Triples requirements
* @param triples A set of RDF triples
* @param bnodeLabels A mapping of blank node names
* already allocated. This method will modify this
* _object as needed to allocate new blank nodes.
*/
//
internal static void replaceBlankNodes(ISet <RDFTriple> triples,
IDictionary <string, RDFTerm> bnodeLabels)
{
if (bnodeLabels.Count == 0)
{
return;
}
IDictionary <string, RDFTerm> newBlankNodes = new PeterO.Support.LenientDictionary <string, RDFTerm>();
IList <RDFTriple[]> changedTriples = new List <RDFTriple[]>();
int[] nodeindex = new int[] { 0 };
foreach (var triple in triples)
{
bool changed = false;
RDFTerm subj = triple.getSubject();
if (subj.getKind() == RDFTerm.BLANK)
{
string oldname = subj.getValue();
string newname = suggestBlankNodeName(oldname, nodeindex, bnodeLabels);
if (!newname.Equals(oldname))
{
RDFTerm newNode = newBlankNodes[oldname];
if (newNode == null)
{
newNode = RDFTerm.fromBlankNode(newname);
bnodeLabels.Add(newname, newNode);
newBlankNodes.Add(oldname, newNode);
}
subj = newNode;
changed = true;
}
}
RDFTerm obj = triple.getObject();
if (obj.getKind() == RDFTerm.BLANK)
{
string oldname = obj.getValue();
string newname = suggestBlankNodeName(oldname, nodeindex, bnodeLabels);
if (!newname.Equals(oldname))
{
RDFTerm newNode = newBlankNodes[oldname];
if (newNode == null)
{
newNode = RDFTerm.fromBlankNode(newname);
bnodeLabels.Add(newname, newNode);
newBlankNodes.Add(oldname, newNode);
}
obj = newNode;
changed = true;
}
}
if (changed)
{
RDFTriple[] newTriple = new RDFTriple[] { triple,
new RDFTriple(subj, triple.getPredicate(), obj) };
changedTriples.Add(newTriple);
}
}
foreach (var triple in changedTriples)
{
triples.Remove(triple[0]);
triples.Add(triple[1]);
}
}
private void setObject(RDFTerm _object)
{
if((_object)==null)throw new ArgumentNullException("object");
this._object = _object;
}
public RDFTriple(RDFTerm subject, RDFTerm predicate, RDFTerm _object)
{
setSubject(subject);
setPredicate(predicate);
setObject(_object);
}
// Processes a subset of RDF/XML metadata
// Doesn't implement RDF/XML completely
private void miniRdfXml(IElement node, RDFa.EvalContext context, RDFTerm subject)
{
string language=context.language;
foreach(var child in node.getChildNodes()){
IElement childElement=(child is IElement) ?
((IElement)child) : null;
if(childElement==null) {
continue;
}
if(node.getAttribute("xml:lang")!=null){
language=node.getAttribute("xml:lang");
} else {
language=context.language;
}
if(childElement.getLocalName().Equals("Description") &&
RDF_NAMESPACE.Equals(childElement.getNamespaceURI())){
RDFTerm about=relativeResolve(childElement.getAttributeNS(RDF_NAMESPACE,"about"));
//Console.WriteLine("about=%s [%s]",about,childElement.getAttribute("about"));
if(about==null){
about=subject;
if(about==null) {
continue;
}
}
foreach(var child2 in child.getChildNodes()){
IElement childElement2=
((child2 is IElement) ?
((IElement)child2) : null);
if(childElement2==null) {
continue;
}
miniRdfXmlChild(childElement2,about,language);
}
} else if(RDF_NAMESPACE.Equals(childElement.getNamespaceURI()))
throw new NotSupportedException();
}
}
public static RDFTerm fromTypedString(string str, string iri)
{
if((str)==null)throw new ArgumentNullException("str");
if((iri)==null)throw new ArgumentNullException("iri");
if((iri).Length==0)throw new ArgumentException("iri is empty.");
RDFTerm ret=new RDFTerm();
ret.kind=TYPEDSTRING;
ret.typeOrLanguage=iri;
ret.value=str;
return ret;
}
public static RDFTerm fromLangString(string str, string languageTag)
{
if((str)==null)throw new ArgumentNullException("str");
if((languageTag)==null)throw new ArgumentNullException("languageTag");
if((languageTag).Length==0)throw new ArgumentException("languageTag is empty.");
RDFTerm ret=new RDFTerm();
ret.kind=LANGSTRING;
ret.typeOrLanguage=languageTag;
ret.value=str;
return ret;
}
private void miniRdfXmlChild(IElement node, RDFTerm subject, string language)
{
string nsname=node.getNamespaceURI();
if(node.getAttribute("xml:lang")!=null){
language=node.getAttribute("xml:lang");
}
string localname=node.getLocalName();
RDFTerm predicate=relativeResolve(nsname+localname);
if(!hasNonTextChildNodes(node)){
string content=getTextNodeText(node);
RDFTerm literal;
if(!string.IsNullOrEmpty(language)){
literal=RDFTerm.fromLangString(content, language);
} else {
literal=RDFTerm.fromTypedString(content);
}
outputGraph.Add(new RDFTriple(subject,predicate,literal));
} else {
string parseType=node.getAttributeNS(RDF_NAMESPACE, "parseType");
if("Literal".Equals(parseType))
throw new NotSupportedException();
RDFTerm blank=generateBlankNode();
context.language=language;
miniRdfXml(node,context,blank);
outputGraph.Add(new RDFTriple(subject,predicate,blank));
}
}
public static RDFTerm fromIRI(string iri)
{
if((iri)==null)throw new ArgumentNullException("iri");
RDFTerm ret=new RDFTerm();
ret.kind=IRI;
ret.typeOrLanguage=null;
ret.value=iri;
return ret;
}
