Exemplo n.º 1
0
        private void OnAddNode(XmlElement diffgramElement, string nodeTypeAttr, XmlDiffViewParentNode sourceParent,
                               ref XmlDiffViewNode currentPosition)
        {
            XmlNodeType nodeType = (XmlNodeType)int.Parse(nodeTypeAttr);
            string      name     = diffgramElement.GetAttribute("name");
            string      prefix   = diffgramElement.GetAttribute("prefix");
            string      ns       = diffgramElement.GetAttribute("ns");
            string      opidAttr = diffgramElement.GetAttribute("opid");
            int         opid     = (opidAttr == string.Empty) ? 0 : int.Parse(opidAttr);

            if (nodeType == XmlNodeType.Attribute)
            {
                Debug.Assert(name != string.Empty);
                XmlDiffViewAttribute newAttr = new XmlDiffViewAttribute(name, prefix, ns, diffgramElement.InnerText);
                newAttr._op   = XmlDiffViewOperation.Add;
                newAttr._opid = opid;
                ((XmlDiffViewElement)sourceParent).InsertAttributeAfter(newAttr, null);
            }
            else
            {
                XmlDiffViewNode newNode = null;

                switch (nodeType)
                {
                case XmlNodeType.Element:
                    Debug.Assert(name != string.Empty);
                    newNode = new XmlDiffViewElement(name, prefix, ns, _bIgnorePrefixes);
                    ApplyDiffgram(diffgramElement, (XmlDiffViewParentNode)newNode);
                    break;

                case XmlNodeType.Text:
                case XmlNodeType.CDATA:
                case XmlNodeType.Comment:
                    Debug.Assert(diffgramElement.InnerText != string.Empty);
                    newNode = new XmlDiffViewCharData(diffgramElement.InnerText, nodeType);
                    break;

                case XmlNodeType.ProcessingInstruction:
                    Debug.Assert(diffgramElement.InnerText != string.Empty);
                    Debug.Assert(name != string.Empty);
                    newNode = new XmlDiffViewPI(name, diffgramElement.InnerText);
                    break;

                case XmlNodeType.EntityReference:
                    Debug.Assert(name != string.Empty);
                    newNode = new XmlDiffViewER(name);
                    break;

                case XmlNodeType.XmlDeclaration:
                    Debug.Assert(diffgramElement.InnerText != string.Empty);
                    newNode = new XmlDiffViewXmlDeclaration(diffgramElement.InnerText);
                    break;

                case XmlNodeType.DocumentType:
                    newNode = new XmlDiffViewDocumentType(diffgramElement.GetAttribute("name"),
                                                          diffgramElement.GetAttribute("publicId"),
                                                          diffgramElement.GetAttribute("systemId"),
                                                          diffgramElement.InnerText);
                    break;

                default:
                    Debug.Assert(false, "Invalid node type.");
                    break;
                }
                Debug.Assert(newNode != null);
                newNode._op   = XmlDiffViewOperation.Add;
                newNode._opid = opid;
                sourceParent.InsertChildAfter(newNode, currentPosition, false);
                currentPosition = newNode;
            }
        }
Exemplo n.º 2
0
        private void LoadSourceChildNodes(XmlDiffViewParentNode parent, XmlReader reader, bool bEmptyElement)
        {
            LoadState savedLoadState = _loadState;

            _loadState.Reset();

            // load attributes
            while (reader.MoveToNextAttribute())
            {
                XmlDiffViewAttribute attr;
                if (reader.Prefix == "xmlns" ||
                    (reader.Prefix == string.Empty && reader.LocalName == "xmlns"))
                {
                    attr = new XmlDiffViewAttribute(reader.LocalName, reader.Prefix, reader.NamespaceURI, reader.Value);
                    if (_bIgnoreNamespaces)
                    {
                        attr._op = XmlDiffViewOperation.Ignore;
                    }
                }
                else
                {
                    string attrValue = _bIgnoreWhitespace ? NormalizeText(reader.Value) : reader.Value;
                    attr = new XmlDiffViewAttribute(reader.LocalName, reader.Prefix, reader.NamespaceURI, attrValue);
                }
                ((XmlDiffViewElement)parent).InsertAttributeAfter(attr, _loadState._curLastAttribute);
                _loadState._curLastAttribute = attr;
            }

            // empty element -> return, do not load chilren
            if (bEmptyElement)
            {
                goto End;
            }

            // load children
            while (reader.Read())
            {
                // ignore whitespaces between nodes
                if (reader.NodeType == XmlNodeType.Whitespace)
                {
                    continue;
                }

                XmlDiffViewNode child = null;
                switch (reader.NodeType)
                {
                case XmlNodeType.Element:
                    bool bEmptyEl           = reader.IsEmptyElement;
                    XmlDiffViewElement elem = new XmlDiffViewElement(reader.LocalName, reader.Prefix, reader.NamespaceURI, _bIgnorePrefixes);
                    LoadSourceChildNodes(elem, reader, bEmptyEl);
                    child = elem;
                    break;

                case XmlNodeType.Attribute:
                    Debug.Assert(false, "We should never get to this point, attributes should be read at the beginning of thid method.");
                    break;

                case XmlNodeType.Text:
                    child = new XmlDiffViewCharData((_bIgnoreWhitespace) ? NormalizeText(reader.Value) : reader.Value, XmlNodeType.Text);
                    break;

                case XmlNodeType.CDATA:
                    child = new XmlDiffViewCharData(reader.Value, XmlNodeType.CDATA);
                    break;

                case XmlNodeType.EntityReference:
                    child = new XmlDiffViewER(reader.Name);
                    break;

                case XmlNodeType.Comment:
                    child = new XmlDiffViewCharData(reader.Value, XmlNodeType.Comment);
                    if (_bIgnoreComments)
                    {
                        child._op = XmlDiffViewOperation.Ignore;
                    }
                    break;

                case XmlNodeType.ProcessingInstruction:
                    child = new XmlDiffViewPI(reader.Name, reader.Value);
                    if (_bIgnorePI)
                    {
                        child._op = XmlDiffViewOperation.Ignore;
                    }
                    break;

                case XmlNodeType.SignificantWhitespace:
                    if (reader.XmlSpace == XmlSpace.Preserve)
                    {
                        child = new XmlDiffViewCharData(reader.Value, XmlNodeType.SignificantWhitespace);
                        if (_bIgnoreWhitespace)
                        {
                            child._op = XmlDiffViewOperation.Ignore;
                        }
                    }
                    break;

                case XmlNodeType.XmlDeclaration:
                    child = new XmlDiffViewXmlDeclaration(NormalizeText(reader.Value));
                    if (_bIgnoreXmlDecl)
                    {
                        child._op = XmlDiffViewOperation.Ignore;
                    }
                    break;

                case XmlNodeType.EndElement:
                    goto End;

                case XmlNodeType.DocumentType:
                    child = new XmlDiffViewDocumentType(reader.Name, reader.GetAttribute("PUBLIC"), reader.GetAttribute("SYSTEM"), reader.Value);
                    if (_bIgnoreDtd)
                    {
                        child._op = XmlDiffViewOperation.Ignore;
                    }
                    break;

                default:
                    Debug.Assert(false, "Invalid node type");
                    break;
                }
                parent.InsertChildAfter(child, _loadState._curLastChild, true);
                _loadState._curLastChild = child;
            }

End:
            _loadState = savedLoadState;
        }