Home | History | Annotate | Download | only in parser 
      1 // Copyright 2014 PDFium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
      6 
      7 #include "xfa/src/foxitlib.h"
      8 #include "xfa/src/fxfa/src/common/xfa_utils.h"
      9 #include "xfa/src/fxfa/src/common/xfa_object.h"
     10 #include "xfa/src/fxfa/src/common/xfa_document.h"
     11 #include "xfa/src/fxfa/src/common/xfa_parser.h"
     12 #include "xfa/src/fxfa/src/common/xfa_script.h"
     13 #include "xfa/src/fxfa/src/common/xfa_docdata.h"
     14 #include "xfa/src/fxfa/src/common/xfa_doclayout.h"
     15 #include "xfa/src/fxfa/src/common/xfa_localemgr.h"
     16 #include "xfa/src/fxfa/src/common/xfa_fm2jsapi.h"
     17 #define XFA_HASHCODE_Group 0xf7f75fcd
     18 class CXFA_TraverseStrategy_DDGroup {
     19  public:
     20   static inline CXFA_Node* GetFirstChild(CXFA_Node* pDDGroupNode) {
     21     return pDDGroupNode->GetFirstChildByName(XFA_HASHCODE_Group);
     22   }
     23   static inline CXFA_Node* GetNextSibling(CXFA_Node* pDDGroupNode) {
     24     return pDDGroupNode->GetNextSameNameSibling(XFA_HASHCODE_Group);
     25   }
     26   static inline CXFA_Node* GetParent(CXFA_Node* pDDGroupNode) {
     27     return pDDGroupNode->GetNodeItem(XFA_NODEITEM_Parent);
     28   }
     29 };
     30 void XFA_DataDescription_UpdateDataRelation(CXFA_Node* pDataNode,
     31                                             CXFA_Node* pDataDescriptionNode) {
     32   FXSYS_assert(pDataDescriptionNode);
     33   for (CXFA_Node* pDataChild = pDataNode->GetNodeItem(XFA_NODEITEM_FirstChild);
     34        pDataChild;
     35        pDataChild = pDataChild->GetNodeItem(XFA_NODEITEM_NextSibling)) {
     36     FX_DWORD dwNameHash = pDataChild->GetNameHash();
     37     XFA_ELEMENT eType = pDataChild->GetClassID();
     38     if (!dwNameHash) {
     39       continue;
     40     }
     41     CXFA_NodeIteratorTemplate<CXFA_Node, CXFA_TraverseStrategy_DDGroup>
     42         sIterator(pDataDescriptionNode);
     43     for (CXFA_Node* pDDGroupNode = sIterator.GetCurrent(); pDDGroupNode;
     44          pDDGroupNode = sIterator.MoveToNext()) {
     45       if (pDDGroupNode != pDataDescriptionNode) {
     46         if (pDDGroupNode->GetClassID() != XFA_ELEMENT_DataGroup) {
     47           continue;
     48         }
     49         CFX_WideString wsNamespace;
     50         if (!pDDGroupNode->TryNamespace(wsNamespace) ||
     51             wsNamespace != FX_WSTRC(L"http://ns.adobe.com/data-description/")) {
     52           continue;
     53         }
     54       }
     55       CXFA_Node* pDDNode = pDDGroupNode->GetFirstChildByName(dwNameHash);
     56       if (!pDDNode) {
     57         continue;
     58       }
     59       if (pDDNode->GetClassID() != eType) {
     60         break;
     61       }
     62       pDataChild->SetDataDescriptionNode(pDDNode);
     63       XFA_DataDescription_UpdateDataRelation(pDataChild, pDDNode);
     64       break;
     65     }
     66   }
     67 }
     68 CXFA_Node* XFA_DataDescription_MaybeCreateDataNode(
     69     CXFA_Document* pDocument,
     70     CXFA_Node* pDataParent,
     71     XFA_ELEMENT eNodeType,
     72     const CFX_WideStringC& wsName) {
     73   if (!pDataParent) {
     74     return NULL;
     75   }
     76   CXFA_Node* pParentDDNode = pDataParent->GetDataDescriptionNode();
     77   if (!pParentDDNode) {
     78     CXFA_Node* pDataNode =
     79         pDocument->CreateNode(XFA_XDPPACKET_Datasets, eNodeType);
     80     FXSYS_assert(pDataNode);
     81     pDataNode->SetCData(XFA_ATTRIBUTE_Name, wsName);
     82     pDataNode->CreateXMLMappingNode();
     83     pDataParent->InsertChild(pDataNode);
     84     pDataNode->SetFlag(XFA_NODEFLAG_Initialized, TRUE, FALSE);
     85     return pDataNode;
     86   } else {
     87     CXFA_NodeIteratorTemplate<CXFA_Node, CXFA_TraverseStrategy_DDGroup>
     88         sIterator(pParentDDNode);
     89     for (CXFA_Node* pDDGroupNode = sIterator.GetCurrent(); pDDGroupNode;
     90          pDDGroupNode = sIterator.MoveToNext()) {
     91       if (pDDGroupNode != pParentDDNode) {
     92         if (pDDGroupNode->GetClassID() != XFA_ELEMENT_DataGroup) {
     93           continue;
     94         }
     95         CFX_WideString wsNamespace;
     96         if (!pDDGroupNode->TryNamespace(wsNamespace) ||
     97             wsNamespace != FX_WSTRC(L"http://ns.adobe.com/data-description/")) {
     98           continue;
     99         }
    100       }
    101       CXFA_Node* pDDNode = pDDGroupNode->GetFirstChildByName(wsName);
    102       if (!pDDNode) {
    103         continue;
    104       }
    105       if (pDDNode->GetClassID() != eNodeType) {
    106         break;
    107       }
    108       CXFA_Node* pDataNode =
    109           pDocument->CreateNode(XFA_XDPPACKET_Datasets, eNodeType);
    110       FXSYS_assert(pDataNode);
    111       pDataNode->SetCData(XFA_ATTRIBUTE_Name, wsName);
    112       pDataNode->CreateXMLMappingNode();
    113       if (eNodeType == XFA_ELEMENT_DataValue &&
    114           pDDNode->GetEnum(XFA_ATTRIBUTE_Contains) ==
    115               XFA_ATTRIBUTEENUM_MetaData) {
    116         pDataNode->SetEnum(XFA_ATTRIBUTE_Contains, XFA_ATTRIBUTEENUM_MetaData);
    117       }
    118       pDataParent->InsertChild(pDataNode);
    119       pDataNode->SetDataDescriptionNode(pDDNode);
    120       pDataNode->SetFlag(XFA_NODEFLAG_Initialized, TRUE, FALSE);
    121       return pDataNode;
    122     }
    123     return NULL;
    124   }
    125 }
    126