Split xfa_document_serialize into class files

This CL moves CXFA_DataImporter and CXFA_DataExporter into their own files
and moves code to an anonymous namespace as necessary.

Review-Url: https://codereview.chromium.org/2164663004

1 files changed, 541 insertions, 0 deletions

diff --git a/xfa/fxfa/parser/cxfa_dataexporter.cpp b/xfa/fxfa/parser/cxfa_dataexporter.cpp
new file mode 100644
index 0000000000..fbb9e70b94
--- /dev/null
+++ b/xfa/fxfa/parser/cxfa_dataexporter.cpp
@@ -0,0 +1,541 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "xfa/fxfa/parser/cxfa_dataexporter.h"
+
+#include "core/fxcrt/include/fx_basic.h"
+#include "xfa/fde/xml/fde_xml_imp.h"
+#include "xfa/fgas/crt/fgas_codepage.h"
+#include "xfa/fxfa/parser/cxfa_document.h"
+#include "xfa/fxfa/parser/cxfa_widgetdata.h"
+#include "xfa/fxfa/parser/xfa_object.h"
+
+namespace {
+
+CFX_WideString ExportEncodeAttribute(const CFX_WideString& str) {
+  CFX_WideTextBuf textBuf;
+  int32_t iLen = str.GetLength();
+  for (int32_t i = 0; i < iLen; i++) {
+    switch (str[i]) {
+      case '&':
+        textBuf << FX_WSTRC(L"&amp;");
+        break;
+      case '<':
+        textBuf << FX_WSTRC(L"&lt;");
+        break;
+      case '>':
+        textBuf << FX_WSTRC(L"&gt;");
+        break;
+      case '\'':
+        textBuf << FX_WSTRC(L"&apos;");
+        break;
+      case '\"':
+        textBuf << FX_WSTRC(L"&quot;");
+        break;
+      default:
+        textBuf.AppendChar(str[i]);
+    }
+  }
+  return textBuf.MakeString();
+}
+
+CFX_WideString ExportEncodeContent(const CFX_WideStringC& str) {
+  CFX_WideTextBuf textBuf;
+  int32_t iLen = str.GetLength();
+  for (int32_t i = 0; i < iLen; i++) {
+    FX_WCHAR ch = str.GetAt(i);
+    if (!FDE_IsXMLValidChar(ch))
+      continue;
+
+    if (ch == '&') {
+      textBuf << FX_WSTRC(L"&amp;");
+    } else if (ch == '<') {
+      textBuf << FX_WSTRC(L"&lt;");
+    } else if (ch == '>') {
+      textBuf << FX_WSTRC(L"&gt;");
+    } else if (ch == '\'') {
+      textBuf << FX_WSTRC(L"&apos;");
+    } else if (ch == '\"') {
+      textBuf << FX_WSTRC(L"&quot;");
+    } else if (ch == ' ') {
+      if (i && str.GetAt(i - 1) != ' ') {
+        textBuf.AppendChar(' ');
+      } else {
+        textBuf << FX_WSTRC(L"&#x20;");
+      }
+    } else {
+      textBuf.AppendChar(str.GetAt(i));
+    }
+  }
+  return textBuf.MakeString();
+}
+
+void SaveAttribute(CXFA_Node* pNode,
+                   XFA_ATTRIBUTE eName,
+                   const CFX_WideStringC& wsName,
+                   FX_BOOL bProto,
+                   CFX_WideString& wsOutput) {
+  CFX_WideString wsValue;
+  if ((!bProto && !pNode->HasAttribute((XFA_ATTRIBUTE)eName, bProto)) ||
+      !pNode->GetAttribute((XFA_ATTRIBUTE)eName, wsValue, FALSE)) {
+    return;
+  }
+  wsValue = ExportEncodeAttribute(wsValue);
+  wsOutput += FX_WSTRC(L" ");
+  wsOutput += wsName;
+  wsOutput += FX_WSTRC(L"=\"");
+  wsOutput += wsValue;
+  wsOutput += FX_WSTRC(L"\"");
+}
+
+FX_BOOL AttributeSaveInDataModel(CXFA_Node* pNode, XFA_ATTRIBUTE eAttribute) {
+  FX_BOOL bSaveInDataModel = FALSE;
+  if (pNode->GetElementType() != XFA_Element::Image)
+    return bSaveInDataModel;
+
+  CXFA_Node* pValueNode = pNode->GetNodeItem(XFA_NODEITEM_Parent);
+  if (!pValueNode || pValueNode->GetElementType() != XFA_Element::Value)
+    return bSaveInDataModel;
+
+  CXFA_Node* pFieldNode = pValueNode->GetNodeItem(XFA_NODEITEM_Parent);
+  if (pFieldNode && pFieldNode->GetBindData() &&
+      eAttribute == XFA_ATTRIBUTE_Href) {
+    bSaveInDataModel = TRUE;
+  }
+  return bSaveInDataModel;
+}
+
+FX_BOOL ContentNodeNeedtoExport(CXFA_Node* pContentNode) {
+  CFX_WideString wsContent;
+  if (!pContentNode->TryContent(wsContent, FALSE, FALSE))
+    return FALSE;
+
+  ASSERT(pContentNode->IsContentNode());
+  CXFA_Node* pParentNode = pContentNode->GetNodeItem(XFA_NODEITEM_Parent);
+  if (!pParentNode || pParentNode->GetElementType() != XFA_Element::Value)
+    return TRUE;
+
+  CXFA_Node* pGrandParentNode = pParentNode->GetNodeItem(XFA_NODEITEM_Parent);
+  if (!pGrandParentNode || !pGrandParentNode->IsContainerNode())
+    return TRUE;
+  if (pGrandParentNode->GetBindData())
+    return FALSE;
+
+  CXFA_WidgetData* pWidgetData = pGrandParentNode->GetWidgetData();
+  XFA_Element eUIType = pWidgetData->GetUIType();
+  if (eUIType == XFA_Element::PasswordEdit)
+    return FALSE;
+  return TRUE;
+}
+
+void RecognizeXFAVersionNumber(CXFA_Node* pTemplateRoot,
+                               CFX_WideString& wsVersionNumber) {
+  wsVersionNumber.clear();
+  if (!pTemplateRoot)
+    return;
+
+  CFX_WideString wsTemplateNS;
+  if (!pTemplateRoot->TryNamespace(wsTemplateNS))
+    return;
+
+  XFA_VERSION eVersion =
+      pTemplateRoot->GetDocument()->RecognizeXFAVersionNumber(wsTemplateNS);
+  if (eVersion == XFA_VERSION_UNKNOWN)
+    eVersion = XFA_VERSION_DEFAULT;
+
+  wsVersionNumber.Format(L"%i.%i", eVersion / 100, eVersion % 100);
+}
+
+void RegenerateFormFile_Changed(CXFA_Node* pNode,
+                                CFX_WideTextBuf& buf,
+                                FX_BOOL bSaveXML) {
+  CFX_WideString wsAttrs;
+  int32_t iAttrs = 0;
+  const uint8_t* pAttrs =
+      XFA_GetElementAttributes(pNode->GetElementType(), iAttrs);
+  while (iAttrs--) {
+    const XFA_ATTRIBUTEINFO* pAttr =
+        XFA_GetAttributeByID((XFA_ATTRIBUTE)pAttrs[iAttrs]);
+    if (pAttr->eName == XFA_ATTRIBUTE_Name ||
+        (AttributeSaveInDataModel(pNode, pAttr->eName) && !bSaveXML)) {
+      continue;
+    }
+    CFX_WideString wsAttr;
+    SaveAttribute(pNode, pAttr->eName, pAttr->pName, bSaveXML, wsAttr);
+    wsAttrs += wsAttr;
+  }
+
+  CFX_WideString wsChildren;
+  switch (pNode->GetObjectType()) {
+    case XFA_ObjectType::ContentNode: {
+      if (!bSaveXML && !ContentNodeNeedtoExport(pNode))
+        break;
+
+      CXFA_Node* pRawValueNode = pNode->GetNodeItem(XFA_NODEITEM_FirstChild);
+      while (pRawValueNode &&
+             pRawValueNode->GetElementType() != XFA_Element::SharpxHTML &&
+             pRawValueNode->GetElementType() != XFA_Element::Sharptext &&
+             pRawValueNode->GetElementType() != XFA_Element::Sharpxml) {
+        pRawValueNode = pRawValueNode->GetNodeItem(XFA_NODEITEM_NextSibling);
+      }
+      if (!pRawValueNode)
+        break;
+
+      CFX_WideString wsContentType;
+      pNode->GetAttribute(XFA_ATTRIBUTE_ContentType, wsContentType, FALSE);
+      if (pRawValueNode->GetElementType() == XFA_Element::SharpxHTML &&
+          wsContentType == FX_WSTRC(L"text/html")) {
+        CFDE_XMLNode* pExDataXML = pNode->GetXMLMappingNode();
+        if (!pExDataXML)
+          break;
+
+        CFDE_XMLNode* pRichTextXML =
+            pExDataXML->GetNodeItem(CFDE_XMLNode::FirstChild);
+        if (!pRichTextXML)
+          break;
+
+        IFX_MemoryStream* pMemStream = FX_CreateMemoryStream(TRUE);
+        IFX_Stream* pTempStream = IFX_Stream::CreateStream(
+            (IFX_FileWrite*)pMemStream, FX_STREAMACCESS_Text |
+                                            FX_STREAMACCESS_Write |
+                                            FX_STREAMACCESS_Append);
+        pTempStream->SetCodePage(FX_CODEPAGE_UTF8);
+        pRichTextXML->SaveXMLNode(pTempStream);
+        wsChildren += CFX_WideString::FromUTF8(
+            CFX_ByteStringC(pMemStream->GetBuffer(), pMemStream->GetSize()));
+        pTempStream->Release();
+        pMemStream->Release();
+      } else if (pRawValueNode->GetElementType() == XFA_Element::Sharpxml &&
+                 wsContentType == FX_WSTRC(L"text/xml")) {
+        CFX_WideString wsRawValue;
+        pRawValueNode->GetAttribute(XFA_ATTRIBUTE_Value, wsRawValue, FALSE);
+        if (wsRawValue.IsEmpty())
+          break;
+
+        CFX_WideStringArray wsSelTextArray;
+        int32_t iStart = 0;
+        int32_t iEnd = wsRawValue.Find(L'\n', iStart);
+        iEnd = (iEnd == -1) ? wsRawValue.GetLength() : iEnd;
+        while (iEnd >= iStart) {
+          wsSelTextArray.Add(wsRawValue.Mid(iStart, iEnd - iStart));
+          iStart = iEnd + 1;
+          if (iStart >= wsRawValue.GetLength())
+            break;
+
+          iEnd = wsRawValue.Find(L'\n', iStart);
+        }
+        CXFA_Node* pParentNode = pNode->GetNodeItem(XFA_NODEITEM_Parent);
+        ASSERT(pParentNode);
+        CXFA_Node* pGrandparentNode =
+            pParentNode->GetNodeItem(XFA_NODEITEM_Parent);
+        ASSERT(pGrandparentNode);
+        CFX_WideString bodyTagName;
+        bodyTagName = pGrandparentNode->GetCData(XFA_ATTRIBUTE_Name);
+        if (bodyTagName.IsEmpty())
+          bodyTagName = FX_WSTRC(L"ListBox1");
+
+        buf << FX_WSTRC(L"<");
+        buf << bodyTagName;
+        buf << FX_WSTRC(L" xmlns=\"\"\n>");
+        for (int32_t i = 0; i < wsSelTextArray.GetSize(); i++) {
+          buf << FX_WSTRC(L"<value\n>");
+          buf << ExportEncodeContent(wsSelTextArray[i].AsStringC());
+          buf << FX_WSTRC(L"</value\n>");
+        }
+        buf << FX_WSTRC(L"</");
+        buf << bodyTagName;
+        buf << FX_WSTRC(L"\n>");
+        wsChildren += buf.AsStringC();
+        buf.Clear();
+      } else {
+        CFX_WideStringC wsValue = pRawValueNode->GetCData(XFA_ATTRIBUTE_Value);
+        wsChildren += ExportEncodeContent(wsValue);
+      }
+      break;
+    }
+    case XFA_ObjectType::TextNode:
+    case XFA_ObjectType::NodeC:
+    case XFA_ObjectType::NodeV: {
+      CFX_WideStringC wsValue = pNode->GetCData(XFA_ATTRIBUTE_Value);
+      wsChildren += ExportEncodeContent(wsValue);
+      break;
+    }
+    default:
+      if (pNode->GetElementType() == XFA_Element::Items) {
+        CXFA_Node* pTemplateNode = pNode->GetTemplateNode();
+        if (!pTemplateNode ||
+            pTemplateNode->CountChildren(XFA_Element::Unknown) !=
+                pNode->CountChildren(XFA_Element::Unknown)) {
+          bSaveXML = TRUE;
+        }
+      }
+      CFX_WideTextBuf newBuf;
+      CXFA_Node* pChildNode = pNode->GetNodeItem(XFA_NODEITEM_FirstChild);
+      while (pChildNode) {
+        RegenerateFormFile_Changed(pChildNode, newBuf, bSaveXML);
+        wsChildren += newBuf.AsStringC();
+        newBuf.Clear();
+        pChildNode = pChildNode->GetNodeItem(XFA_NODEITEM_NextSibling);
+      }
+      if (!bSaveXML && !wsChildren.IsEmpty() &&
+          pNode->GetElementType() == XFA_Element::Items) {
+        wsChildren.clear();
+        bSaveXML = TRUE;
+        CXFA_Node* pChild = pNode->GetNodeItem(XFA_NODEITEM_FirstChild);
+        while (pChild) {
+          RegenerateFormFile_Changed(pChild, newBuf, bSaveXML);
+          wsChildren += newBuf.AsStringC();
+          newBuf.Clear();
+          pChild = pChild->GetNodeItem(XFA_NODEITEM_NextSibling);
+        }
+      }
+      break;
+  }
+
+  if (!wsChildren.IsEmpty() || !wsAttrs.IsEmpty() ||
+      pNode->HasAttribute(XFA_ATTRIBUTE_Name)) {
+    CFX_WideStringC wsElement = pNode->GetClassName();
+    CFX_WideString wsName;
+    SaveAttribute(pNode, XFA_ATTRIBUTE_Name, FX_WSTRC(L"name"), TRUE, wsName);
+    buf << FX_WSTRC(L"<");
+    buf << wsElement;
+    buf << wsName;
+    buf << wsAttrs;
+    if (wsChildren.IsEmpty()) {
+      buf << FX_WSTRC(L"\n/>");
+    } else {
+      buf << FX_WSTRC(L"\n>");
+      buf << wsChildren;
+      buf << FX_WSTRC(L"</");
+      buf << wsElement;
+      buf << FX_WSTRC(L"\n>");
+    }
+  }
+}
+
+void RegenerateFormFile_Container(CXFA_Node* pNode,
+                                  IFX_Stream* pStream,
+                                  FX_BOOL bSaveXML = FALSE) {
+  XFA_Element eType = pNode->GetElementType();
+  if (eType == XFA_Element::Field || eType == XFA_Element::Draw ||
+      !pNode->IsContainerNode()) {
+    CFX_WideTextBuf buf;
+    RegenerateFormFile_Changed(pNode, buf, bSaveXML);
+    FX_STRSIZE nLen = buf.GetLength();
+    if (nLen > 0)
+      pStream->WriteString((const FX_WCHAR*)buf.GetBuffer(), nLen);
+    return;
+  }
+
+  CFX_WideStringC wsElement = pNode->GetClassName();
+  pStream->WriteString(L"<", 1);
+  pStream->WriteString(wsElement.c_str(), wsElement.GetLength());
+  CFX_WideString wsOutput;
+  SaveAttribute(pNode, XFA_ATTRIBUTE_Name, FX_WSTRC(L"name"), TRUE, wsOutput);
+  CFX_WideString wsAttrs;
+  int32_t iAttrs = 0;
+  const uint8_t* pAttrs =
+      XFA_GetElementAttributes(pNode->GetElementType(), iAttrs);
+  while (iAttrs--) {
+    const XFA_ATTRIBUTEINFO* pAttr =
+        XFA_GetAttributeByID((XFA_ATTRIBUTE)pAttrs[iAttrs]);
+    if (pAttr->eName == XFA_ATTRIBUTE_Name)
+      continue;
+
+    CFX_WideString wsAttr;
+    SaveAttribute(pNode, pAttr->eName, pAttr->pName, FALSE, wsAttr);
+    wsOutput += wsAttr;
+  }
+
+  if (!wsOutput.IsEmpty())
+    pStream->WriteString(wsOutput.c_str(), wsOutput.GetLength());
+
+  CXFA_Node* pChildNode = pNode->GetNodeItem(XFA_NODEITEM_FirstChild);
+  if (pChildNode) {
+    pStream->WriteString(L"\n>", 2);
+    while (pChildNode) {
+      RegenerateFormFile_Container(pChildNode, pStream, bSaveXML);
+      pChildNode = pChildNode->GetNodeItem(XFA_NODEITEM_NextSibling);
+    }
+    pStream->WriteString(L"</", 2);
+    pStream->WriteString(wsElement.c_str(), wsElement.GetLength());
+    pStream->WriteString(L"\n>", 2);
+  } else {
+    pStream->WriteString(L"\n/>", 3);
+  }
+}
+
+}  // namespace
+
+void XFA_DataExporter_RegenerateFormFile(CXFA_Node* pNode,
+                                         IFX_Stream* pStream,
+                                         const FX_CHAR* pChecksum,
+                                         FX_BOOL bSaveXML) {
+  if (pNode->IsModelNode()) {
+    static const FX_WCHAR s_pwsTagName[] = L"<form";
+    static const FX_WCHAR s_pwsClose[] = L"</form\n>";
+    pStream->WriteString(s_pwsTagName, FXSYS_wcslen(s_pwsTagName));
+    if (pChecksum) {
+      static const FX_WCHAR s_pwChecksum[] = L" checksum=\"";
+      CFX_WideString wsChecksum = CFX_WideString::FromUTF8(pChecksum);
+      pStream->WriteString(s_pwChecksum, FXSYS_wcslen(s_pwChecksum));
+      pStream->WriteString(wsChecksum.c_str(), wsChecksum.GetLength());
+      pStream->WriteString(L"\"", 1);
+    }
+    pStream->WriteString(L" xmlns=\"", FXSYS_wcslen(L" xmlns=\""));
+    const FX_WCHAR* pURI = XFA_GetPacketByIndex(XFA_PACKET_Form)->pURI;
+    pStream->WriteString(pURI, FXSYS_wcslen(pURI));
+    CFX_WideString wsVersionNumber;
+    RecognizeXFAVersionNumber(
+        ToNode(pNode->GetDocument()->GetXFAObject(XFA_HASHCODE_Template)),
+        wsVersionNumber);
+    if (wsVersionNumber.IsEmpty()) {
+      wsVersionNumber = FX_WSTRC(L"2.8");
+    }
+    wsVersionNumber += FX_WSTRC(L"/\"\n>");
+    pStream->WriteString(wsVersionNumber.c_str(), wsVersionNumber.GetLength());
+    CXFA_Node* pChildNode = pNode->GetNodeItem(XFA_NODEITEM_FirstChild);
+    while (pChildNode) {
+      RegenerateFormFile_Container(pChildNode, pStream);
+      pChildNode = pChildNode->GetNodeItem(XFA_NODEITEM_NextSibling);
+    }
+    pStream->WriteString(s_pwsClose, FXSYS_wcslen(s_pwsClose));
+  } else {
+    RegenerateFormFile_Container(pNode, pStream, bSaveXML);
+  }
+}
+
+void XFA_DataExporter_DealWithDataGroupNode(CXFA_Node* pDataNode) {
+  if (!pDataNode || pDataNode->GetElementType() == XFA_Element::DataValue)
+    return;
+
+  int32_t iChildNum = 0;
+  for (CXFA_Node* pChildNode = pDataNode->GetNodeItem(XFA_NODEITEM_FirstChild);
+       pChildNode;
+       pChildNode = pChildNode->GetNodeItem(XFA_NODEITEM_NextSibling)) {
+    iChildNum++;
+    XFA_DataExporter_DealWithDataGroupNode(pChildNode);
+  }
+
+  if (pDataNode->GetElementType() != XFA_Element::DataGroup)
+    return;
+
+  if (iChildNum > 0) {
+    CFDE_XMLNode* pXMLNode = pDataNode->GetXMLMappingNode();
+    ASSERT(pXMLNode->GetType() == FDE_XMLNODE_Element);
+    CFDE_XMLElement* pXMLElement = static_cast<CFDE_XMLElement*>(pXMLNode);
+    if (pXMLElement->HasAttribute(L"xfa:dataNode"))
+      pXMLElement->RemoveAttribute(L"xfa:dataNode");
+
+    return;
+  }
+
+  CFDE_XMLNode* pXMLNode = pDataNode->GetXMLMappingNode();
+  ASSERT(pXMLNode->GetType() == FDE_XMLNODE_Element);
+  static_cast<CFDE_XMLElement*>(pXMLNode)->SetString(L"xfa:dataNode",
+                                                     L"dataGroup");
+}
+
+CXFA_DataExporter::CXFA_DataExporter(CXFA_Document* pDocument)
+    : m_pDocument(pDocument) {
+  ASSERT(m_pDocument);
+}
+
+FX_BOOL CXFA_DataExporter::Export(IFX_FileWrite* pWrite) {
+  return Export(pWrite, m_pDocument->GetRoot(), 0, nullptr);
+}
+
+FX_BOOL CXFA_DataExporter::Export(IFX_FileWrite* pWrite,
+                                  CXFA_Node* pNode,
+                                  uint32_t dwFlag,
+                                  const FX_CHAR* pChecksum) {
+  if (!pWrite) {
+    ASSERT(false);
+    return FALSE;
+  }
+  IFX_Stream* pStream = IFX_Stream::CreateStream(
+      pWrite,
+      FX_STREAMACCESS_Text | FX_STREAMACCESS_Write | FX_STREAMACCESS_Append);
+  if (!pStream)
+    return FALSE;
+
+  pStream->SetCodePage(FX_CODEPAGE_UTF8);
+  FX_BOOL bRet = Export(pStream, pNode, dwFlag, pChecksum);
+  pStream->Release();
+  return bRet;
+}
+
+FX_BOOL CXFA_DataExporter::Export(IFX_Stream* pStream,
+                                  CXFA_Node* pNode,
+                                  uint32_t dwFlag,
+                                  const FX_CHAR* pChecksum) {
+  CFDE_XMLDoc* pXMLDoc = m_pDocument->GetXMLDoc();
+  if (pNode->IsModelNode()) {
+    switch (pNode->GetPacketID()) {
+      case XFA_XDPPACKET_XDP: {
+        static const FX_WCHAR s_pwsPreamble[] =
+            L"<xdp:xdp xmlns:xdp=\"http://ns.adobe.com/xdp/\">";
+        pStream->WriteString(s_pwsPreamble, FXSYS_wcslen(s_pwsPreamble));
+        for (CXFA_Node* pChild = pNode->GetNodeItem(XFA_NODEITEM_FirstChild);
+             pChild; pChild = pChild->GetNodeItem(XFA_NODEITEM_NextSibling)) {
+          Export(pStream, pChild, dwFlag, pChecksum);
+        }
+        static const FX_WCHAR s_pwsPostamble[] = L"</xdp:xdp\n>";
+        pStream->WriteString(s_pwsPostamble, FXSYS_wcslen(s_pwsPostamble));
+        break;
+      }
+      case XFA_XDPPACKET_Datasets: {
+        CFDE_XMLElement* pElement =
+            static_cast<CFDE_XMLElement*>(pNode->GetXMLMappingNode());
+        if (!pElement || pElement->GetType() != FDE_XMLNODE_Element)
+          return FALSE;
+
+        CXFA_Node* pDataNode = pNode->GetNodeItem(XFA_NODEITEM_FirstChild);
+        ASSERT(pDataNode);
+        XFA_DataExporter_DealWithDataGroupNode(pDataNode);
+        pXMLDoc->SaveXMLNode(pStream, pElement);
+        break;
+      }
+      case XFA_XDPPACKET_Form: {
+        XFA_DataExporter_RegenerateFormFile(pNode, pStream, pChecksum);
+        break;
+      }
+      case XFA_XDPPACKET_Template:
+      default: {
+        CFDE_XMLElement* pElement =
+            static_cast<CFDE_XMLElement*>(pNode->GetXMLMappingNode());
+        if (!pElement || pElement->GetType() != FDE_XMLNODE_Element)
+          return FALSE;
+
+        pXMLDoc->SaveXMLNode(pStream, pElement);
+        break;
+      }
+    }
+    return TRUE;
+  }
+
+  CXFA_Node* pDataNode = pNode->GetNodeItem(XFA_NODEITEM_Parent);
+  CXFA_Node* pExportNode = pNode;
+  for (CXFA_Node* pChildNode = pDataNode->GetNodeItem(XFA_NODEITEM_FirstChild);
+       pChildNode;
+       pChildNode = pChildNode->GetNodeItem(XFA_NODEITEM_NextSibling)) {
+    if (pChildNode != pNode) {
+      pExportNode = pDataNode;
+      break;
+    }
+  }
+  CFDE_XMLElement* pElement =
+      static_cast<CFDE_XMLElement*>(pExportNode->GetXMLMappingNode());
+  if (!pElement || pElement->GetType() != FDE_XMLNODE_Element)
+    return FALSE;
+
+  XFA_DataExporter_DealWithDataGroupNode(pExportNode);
+  pElement->SetString(L"xmlns:xfa", L"http://www.xfa.org/schema/xfa-data/1.0/");
+  pXMLDoc->SaveXMLNode(pStream, pElement);
+  pElement->RemoveAttribute(L"xmlns:xfa");
+
+  return TRUE;
+}