Fix parsing of double dot operators for FormCalc

xfa/fxfa/parser/xfa_script_resolveprocessor.cpp

 // 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/xfa_script_resolveprocessor.h"
 
 #include "core/include/fxcrt/fx_ext.h"
 #include "xfa/fxfa/fm2js/xfa_fm2jsapi.h"
@@ skipping 34 matching lines @@
   FX_WCHAR wch = rnd.m_wsName.GetAt(0);
   switch (wch) {
     case '$':
       return XFA_ResolveNodes_Dollar(rnd);
     case '!':
       return XFA_ResolveNodes_Excalmatory(rnd);
     case '#':
       return XFA_ResolveNodes_NumberSign(rnd);
     case '*':
       return XFA_ResolveNodes_Asterisk(rnd);
+    // TODO(dsinclair@chromium.org): We could probably remove this.
     case '.':
       return XFA_ResolveNodes_AnyChild(rnd);
     default:
       break;
   }
   if (rnd.m_uHashName == XFA_HASHCODE_This && rnd.m_nLevel == 0) {
     rnd.m_Nodes.Add(rnd.m_pSC->GetThisObject());
     return 1;
   } else if (rnd.m_CurNode->GetClassID() == XFA_ELEMENT_Xfa) {
     CXFA_Object* pObjNode =
@@ skipping 13 matching lines @@
     return rnd.m_Nodes.GetSize();
   }
   int32_t nRet = XFA_ResolveNodes_Normal(rnd);
   if (nRet < 1 && rnd.m_uHashName == XFA_HASHCODE_Xfa) {
     rnd.m_Nodes.Add(rnd.m_pSC->GetDocument()->GetRoot());
   }
   return rnd.m_Nodes.GetSize();
 }
 int32_t CXFA_ResolveProcessor::XFA_ResolveNodes_AnyChild(
     CXFA_ResolveNodesData& rnd) {
-  CFX_WideString wsName = rnd.m_wsName.Right(rnd.m_wsName.GetLength() - 1);
+  CFX_WideString wsName = rnd.m_wsName;
   CFX_WideString wsCondition = rnd.m_wsCondition;
   CXFA_Node* findNode = NULL;
   CXFA_NodeArray siblings;
   FX_BOOL bClassName = FALSE;
   if (wsName.GetAt(0) == '#') {
     bClassName = TRUE;
     wsName = wsName.Right(wsName.GetLength() - 1);
   }
   findNode = m_pNodeHelper->XFA_ResolveNodes_GetOneChild(ToNode(rnd.m_CurNode),
                                                          wsName, bClassName);
@@ skipping 440 matching lines @@
   FX_WCHAR wPrev = 0, wCur;
   FX_BOOL bIsCondition = FALSE;
   while (nStart < iLength) {
     wCur = pSrc[nStart++];
     if (wCur == '.') {
       if (wPrev == '\\') {
         pNameBuf[nNameCount - 1] = wPrev = '.';
         continue;
       }
       if (nNameCount == 0) {
-        pNameBuf[nNameCount++] = wCur;
+        rnd.m_dwStyles |= XFA_RESOLVENODE_AnyChild;
         continue;
       }
       FX_WCHAR wLookahead = nStart < iLength ? pSrc[nStart] : 0;
       if (wLookahead != '[' && wLookahead != '(') {
         if (nType < 0) {
           break;
         }
       }
     }
     if (wCur == '[' || wCur == '(') {
@@ skipping 256 matching lines @@
   if (m_pNodeHelper->XFA_CreateNode_ForCondition(wsNextCondition)) {
     if (m_pNodeHelper->m_eLastCreateType == XFA_ELEMENT_DataGroup) {
       iIndex = 0;
     } else {
       iIndex = iCount - 1;
     }
   } else {
     iIndex = iCount - 1;
   }
 }