Remove xfa/src/fxfa/src/common and xfa/src/fxfa/src

This Cl moves the code in xfa/src/fxfa/src/common to the diretory which
contains the respective implementations and removes the xfa/src/fxfa/src/common
directory. It them moves all of the code in xfa/src/fxfa/src up one level and
removes the xfa/src/fxfa/src
directory.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1770073003 .

1 files changed, 612 insertions, 0 deletions

diff --git a/xfa/src/fxfa/parser/xfa_basic_imp.cpp b/xfa/src/fxfa/parser/xfa_basic_imp.cpp
new file mode 100644
index 0000000000..dc4c8d1778
--- /dev/null
+++ b/xfa/src/fxfa/parser/xfa_basic_imp.cpp
@@ -0,0 +1,612 @@
+// 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/src/fxfa/parser/xfa_basic_imp.h"
+
+#include "core/include/fxcrt/fx_ext.h"
+#include "xfa/src/fgas/include/fx_alg.h"
+#include "xfa/src/fgas/include/fx_cpg.h"
+#include "xfa/src/fgas/include/fx_sys.h"
+#include "xfa/src/fxfa/fm2js/xfa_fm2jsapi.h"
+#include "xfa/src/fxfa/parser/xfa_basic_data.h"
+#include "xfa/src/fxfa/parser/xfa_docdata.h"
+#include "xfa/src/fxfa/parser/xfa_doclayout.h"
+#include "xfa/src/fxfa/parser/xfa_document.h"
+#include "xfa/src/fxfa/parser/xfa_localemgr.h"
+#include "xfa/src/fxfa/parser/xfa_object.h"
+#include "xfa/src/fxfa/parser/xfa_parser.h"
+#include "xfa/src/fxfa/parser/xfa_script.h"
+#include "xfa/src/fxfa/parser/xfa_utils.h"
+
+const XFA_PACKETINFO* XFA_GetPacketByName(const CFX_WideStringC& wsName) {
+  int32_t iLength = wsName.GetLength();
+  if (iLength == 0) {
+    return NULL;
+  }
+  uint32_t uHash = FX_HashCode_String_GetW(wsName.GetPtr(), iLength);
+  int32_t iStart = 0, iEnd = g_iXFAPacketCount - 1;
+  do {
+    int32_t iMid = (iStart + iEnd) / 2;
+    const XFA_PACKETINFO* pInfo = g_XFAPacketData + iMid;
+    if (uHash == pInfo->uHash) {
+      return pInfo;
+    } else if (uHash < pInfo->uHash) {
+      iEnd = iMid - 1;
+    } else {
+      iStart = iMid + 1;
+    }
+  } while (iStart <= iEnd);
+  return NULL;
+}
+
+const XFA_PACKETINFO* XFA_GetPacketByID(FX_DWORD dwPacket) {
+  int32_t iStart = 0, iEnd = g_iXFAPacketCount - 1;
+  do {
+    int32_t iMid = (iStart + iEnd) / 2;
+    FX_DWORD dwFind = (g_XFAPacketData + iMid)->eName;
+    if (dwPacket == dwFind) {
+      return g_XFAPacketData + iMid;
+    } else if (dwPacket < dwFind) {
+      iEnd = iMid - 1;
+    } else {
+      iStart = iMid + 1;
+    }
+  } while (iStart <= iEnd);
+  return NULL;
+}
+
+const XFA_PACKETINFO* XFA_GetPacketByIndex(XFA_PACKET ePacket) {
+  return g_XFAPacketData + ePacket;
+}
+
+const XFA_ATTRIBUTEENUMINFO* XFA_GetAttributeEnumByName(
+    const CFX_WideStringC& wsName) {
+  int32_t iLength = wsName.GetLength();
+  if (iLength == 0) {
+    return NULL;
+  }
+  uint32_t uHash = FX_HashCode_String_GetW(wsName.GetPtr(), iLength);
+  int32_t iStart = 0, iEnd = g_iXFAEnumCount - 1;
+  do {
+    int32_t iMid = (iStart + iEnd) / 2;
+    const XFA_ATTRIBUTEENUMINFO* pInfo = g_XFAEnumData + iMid;
+    if (uHash == pInfo->uHash) {
+      return pInfo;
+    } else if (uHash < pInfo->uHash) {
+      iEnd = iMid - 1;
+    } else {
+      iStart = iMid + 1;
+    }
+  } while (iStart <= iEnd);
+  return NULL;
+}
+const XFA_ATTRIBUTEENUMINFO* XFA_GetAttributeEnumByID(XFA_ATTRIBUTEENUM eName) {
+  return g_XFAEnumData + eName;
+}
+int32_t XFA_GetAttributeCount() {
+  return g_iXFAAttributeCount;
+}
+const XFA_ATTRIBUTEINFO* XFA_GetAttributeByName(const CFX_WideStringC& wsName) {
+  int32_t iLength = wsName.GetLength();
+  if (iLength == 0) {
+    return NULL;
+  }
+  uint32_t uHash = FX_HashCode_String_GetW(wsName.GetPtr(), iLength);
+  int32_t iStart = 0, iEnd = g_iXFAAttributeCount - 1;
+  do {
+    int32_t iMid = (iStart + iEnd) / 2;
+    const XFA_ATTRIBUTEINFO* pInfo = g_XFAAttributeData + iMid;
+    if (uHash == pInfo->uHash) {
+      return pInfo;
+    } else if (uHash < pInfo->uHash) {
+      iEnd = iMid - 1;
+    } else {
+      iStart = iMid + 1;
+    }
+  } while (iStart <= iEnd);
+  return NULL;
+}
+const XFA_ATTRIBUTEINFO* XFA_GetAttributeByID(XFA_ATTRIBUTE eName) {
+  return (eName < g_iXFAAttributeCount) ? (g_XFAAttributeData + eName) : NULL;
+}
+FX_BOOL XFA_GetAttributeDefaultValue(void*& pValue,
+                                     XFA_ELEMENT eElement,
+                                     XFA_ATTRIBUTE eAttribute,
+                                     XFA_ATTRIBUTETYPE eType,
+                                     FX_DWORD dwPacket) {
+  const XFA_ATTRIBUTEINFO* pInfo = XFA_GetAttributeByID(eAttribute);
+  if (pInfo == NULL) {
+    return FALSE;
+  }
+  if (dwPacket && (dwPacket & pInfo->dwPackets) == 0) {
+    return FALSE;
+  }
+  if (pInfo->eType == eType) {
+    pValue = pInfo->pDefValue;
+    return TRUE;
+  } else if (pInfo->eType == XFA_ATTRIBUTETYPE_NOTSURE) {
+    const XFA_NOTSUREATTRIBUTE* pAttr =
+        XFA_GetNotsureAttribute(eElement, eAttribute, eType);
+    if (pAttr) {
+      pValue = pAttr->pValue;
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+XFA_ATTRIBUTEENUM XFA_GetAttributeDefaultValue_Enum(XFA_ELEMENT eElement,
+                                                    XFA_ATTRIBUTE eAttribute,
+                                                    FX_DWORD dwPacket) {
+  void* pValue;
+  if (XFA_GetAttributeDefaultValue(pValue, eElement, eAttribute,
+                                   XFA_ATTRIBUTETYPE_Enum, dwPacket)) {
+    return (XFA_ATTRIBUTEENUM)(uintptr_t)pValue;
+  }
+  return XFA_ATTRIBUTEENUM_Unknown;
+}
+CFX_WideStringC XFA_GetAttributeDefaultValue_Cdata(XFA_ELEMENT eElement,
+                                                   XFA_ATTRIBUTE eAttribute,
+                                                   FX_DWORD dwPacket) {
+  void* pValue;
+  if (XFA_GetAttributeDefaultValue(pValue, eElement, eAttribute,
+                                   XFA_ATTRIBUTETYPE_Cdata, dwPacket)) {
+    return (const FX_WCHAR*)pValue;
+  }
+  return NULL;
+}
+FX_BOOL XFA_GetAttributeDefaultValue_Boolean(XFA_ELEMENT eElement,
+                                             XFA_ATTRIBUTE eAttribute,
+                                             FX_DWORD dwPacket) {
+  void* pValue;
+  if (XFA_GetAttributeDefaultValue(pValue, eElement, eAttribute,
+                                   XFA_ATTRIBUTETYPE_Boolean, dwPacket)) {
+    return (FX_BOOL)(uintptr_t)pValue;
+  }
+  return FALSE;
+}
+int32_t XFA_GetAttributeDefaultValue_Integer(XFA_ELEMENT eElement,
+                                             XFA_ATTRIBUTE eAttribute,
+                                             FX_DWORD dwPacket) {
+  void* pValue;
+  if (XFA_GetAttributeDefaultValue(pValue, eElement, eAttribute,
+                                   XFA_ATTRIBUTETYPE_Integer, dwPacket)) {
+    return (int32_t)(uintptr_t)pValue;
+  }
+  return 0;
+}
+CXFA_Measurement XFA_GetAttributeDefaultValue_Measure(XFA_ELEMENT eElement,
+                                                      XFA_ATTRIBUTE eAttribute,
+                                                      FX_DWORD dwPacket) {
+  void* pValue;
+  if (XFA_GetAttributeDefaultValue(pValue, eElement, eAttribute,
+                                   XFA_ATTRIBUTETYPE_Measure, dwPacket)) {
+    return *(CXFA_Measurement*)pValue;
+  }
+  return CXFA_Measurement();
+}
+int32_t XFA_GetElementCount() {
+  return g_iXFAElementCount;
+}
+const XFA_ELEMENTINFO* XFA_GetElementByName(const CFX_WideStringC& wsName) {
+  int32_t iLength = wsName.GetLength();
+  if (iLength == 0) {
+    return NULL;
+  }
+  uint32_t uHash = FX_HashCode_String_GetW(wsName.GetPtr(), iLength);
+  int32_t iStart = 0, iEnd = g_iXFAElementCount - 1;
+  do {
+    int32_t iMid = (iStart + iEnd) / 2;
+    const XFA_ELEMENTINFO* pInfo = g_XFAElementData + iMid;
+    if (uHash == pInfo->uHash) {
+      return pInfo;
+    } else if (uHash < pInfo->uHash) {
+      iEnd = iMid - 1;
+    } else {
+      iStart = iMid + 1;
+    }
+  } while (iStart <= iEnd);
+  return NULL;
+}
+const XFA_ELEMENTINFO* XFA_GetElementByID(XFA_ELEMENT eName) {
+  return (eName < g_iXFAElementCount) ? (g_XFAElementData + eName) : NULL;
+}
+const FX_WORD* XFA_GetElementChildren(XFA_ELEMENT eElement, int32_t& iCount) {
+  if (eElement >= g_iXFAElementCount) {
+    return NULL;
+  }
+  const XFA_ELEMENTHIERARCHY* pElement = g_XFAElementChildrenIndex + eElement;
+  iCount = pElement->wCount;
+  return g_XFAElementChildrenData + pElement->wStart;
+}
+const uint8_t* XFA_GetElementAttributes(XFA_ELEMENT eElement, int32_t& iCount) {
+  if (eElement >= g_iXFAElementCount) {
+    return NULL;
+  }
+  const XFA_ELEMENTHIERARCHY* pElement = g_XFAElementAttributeIndex + eElement;
+  iCount = pElement->wCount;
+  return g_XFAElementAttributeData + pElement->wStart;
+}
+const XFA_ATTRIBUTEINFO* XFA_GetAttributeOfElement(XFA_ELEMENT eElement,
+                                                   XFA_ATTRIBUTE eAttribute,
+                                                   FX_DWORD dwPacket) {
+  int32_t iCount = 0;
+  const uint8_t* pAttr = XFA_GetElementAttributes(eElement, iCount);
+  if (pAttr == NULL || iCount < 1) {
+    return NULL;
+  }
+  CFX_DSPATemplate<uint8_t> search;
+  int32_t index = search.Lookup(eAttribute, pAttr, iCount);
+  if (index < 0) {
+    return NULL;
+  }
+  const XFA_ATTRIBUTEINFO* pInfo = XFA_GetAttributeByID(eAttribute);
+  ASSERT(pInfo);
+  if (dwPacket == XFA_XDPPACKET_UNKNOWN)
+    return pInfo;
+  return (dwPacket & pInfo->dwPackets) ? pInfo : NULL;
+}
+const XFA_ELEMENTINFO* XFA_GetChildOfElement(XFA_ELEMENT eElement,
+                                             XFA_ELEMENT eChild,
+                                             FX_DWORD dwPacket) {
+  int32_t iCount = 0;
+  const FX_WORD* pChild = XFA_GetElementChildren(eElement, iCount);
+  if (pChild == NULL || iCount < 1) {
+    return NULL;
+  }
+  CFX_DSPATemplate<FX_WORD> search;
+  int32_t index = search.Lookup(eChild, pChild, iCount);
+  if (index < 0) {
+    return NULL;
+  }
+  const XFA_ELEMENTINFO* pInfo = XFA_GetElementByID(eChild);
+  ASSERT(pInfo);
+  if (dwPacket == XFA_XDPPACKET_UNKNOWN)
+    return pInfo;
+  return (dwPacket & pInfo->dwPackets) ? pInfo : NULL;
+}
+const XFA_PROPERTY* XFA_GetElementProperties(XFA_ELEMENT eElement,
+                                             int32_t& iCount) {
+  if (eElement >= g_iXFAElementCount) {
+    return NULL;
+  }
+  const XFA_ELEMENTHIERARCHY* pElement = g_XFAElementPropertyIndex + eElement;
+  iCount = pElement->wCount;
+  return g_XFAElementPropertyData + pElement->wStart;
+}
+const XFA_PROPERTY* XFA_GetPropertyOfElement(XFA_ELEMENT eElement,
+                                             XFA_ELEMENT eProperty,
+                                             FX_DWORD dwPacket) {
+  int32_t iCount = 0;
+  const XFA_PROPERTY* pProperty = XFA_GetElementProperties(eElement, iCount);
+  if (pProperty == NULL || iCount < 1) {
+    return NULL;
+  }
+  int32_t iStart = 0, iEnd = iCount - 1, iMid;
+  do {
+    iMid = (iStart + iEnd) / 2;
+    XFA_ELEMENT eName = (XFA_ELEMENT)pProperty[iMid].eName;
+    if (eProperty == eName) {
+      break;
+    } else if (eProperty < eName) {
+      iEnd = iMid - 1;
+    } else {
+      iStart = iMid + 1;
+    }
+  } while (iStart <= iEnd);
+  if (iStart > iEnd) {
+    return NULL;
+  }
+  const XFA_ELEMENTINFO* pInfo = XFA_GetElementByID(eProperty);
+  ASSERT(pInfo);
+  if (dwPacket == XFA_XDPPACKET_UNKNOWN)
+    return pProperty + iMid;
+  return (dwPacket & pInfo->dwPackets) ? (pProperty + iMid) : NULL;
+}
+const XFA_NOTSUREATTRIBUTE* XFA_GetNotsureAttribute(XFA_ELEMENT eElement,
+                                                    XFA_ATTRIBUTE eAttribute,
+                                                    XFA_ATTRIBUTETYPE eType) {
+  int32_t iStart = 0, iEnd = g_iXFANotsureCount - 1;
+  do {
+    int32_t iMid = (iStart + iEnd) / 2;
+    const XFA_NOTSUREATTRIBUTE* pAttr = g_XFANotsureAttributes + iMid;
+    if (eElement == pAttr->eElement) {
+      if (pAttr->eAttribute == eAttribute) {
+        if (eType == XFA_ATTRIBUTETYPE_NOTSURE || eType == pAttr->eType) {
+          return pAttr;
+        }
+        return NULL;
+      } else {
+        int32_t iBefore = iMid - 1;
+        if (iBefore >= 0) {
+          pAttr = g_XFANotsureAttributes + iBefore;
+          while (eElement == pAttr->eElement) {
+            if (pAttr->eAttribute == eAttribute) {
+              if (eType == XFA_ATTRIBUTETYPE_NOTSURE || eType == pAttr->eType) {
+                return pAttr;
+              }
+              return NULL;
+            }
+            iBefore--;
+            if (iBefore < 0) {
+              break;
+            }
+            pAttr = g_XFANotsureAttributes + iBefore;
+          }
+        }
+        int32_t iAfter = iMid + 1;
+        if (iAfter <= g_iXFANotsureCount - 1) {
+          pAttr = g_XFANotsureAttributes + iAfter;
+          while (eElement == pAttr->eElement) {
+            if (pAttr->eAttribute == eAttribute) {
+              if (eType == XFA_ATTRIBUTETYPE_NOTSURE || eType == pAttr->eType) {
+                return pAttr;
+              }
+              return NULL;
+            }
+            iAfter++;
+            if (iAfter > g_iXFANotsureCount - 1) {
+              break;
+            }
+            pAttr = g_XFANotsureAttributes + iAfter;
+          }
+        }
+        return NULL;
+      }
+    } else if (eElement < pAttr->eElement) {
+      iEnd = iMid - 1;
+    } else {
+      iStart = iMid + 1;
+    }
+  } while (iStart <= iEnd);
+  return NULL;
+}
+int32_t XFA_GetMethodCount() {
+  return g_iSomMethodCount;
+}
+const XFA_METHODINFO* XFA_GetMethodByName(XFA_ELEMENT eElement,
+                                          const CFX_WideStringC& wsMethodName) {
+  int32_t iLength = wsMethodName.GetLength();
+  if (iLength == 0) {
+    return NULL;
+  }
+  int32_t iElementIndex = eElement;
+  while (iElementIndex != -1) {
+    XFA_LPCSCRIPTHIERARCHY scriptIndex = g_XFAScriptIndex + iElementIndex;
+    int32_t icount = scriptIndex->wMethodCount;
+    if (icount == 0) {
+      iElementIndex = scriptIndex->wParentIndex;
+      continue;
+    }
+    uint32_t uHash = FX_HashCode_String_GetW(wsMethodName.GetPtr(), iLength);
+    int32_t iStart = scriptIndex->wMethodStart, iEnd = iStart + icount - 1;
+    do {
+      int32_t iMid = (iStart + iEnd) / 2;
+      const XFA_METHODINFO* pInfo = g_SomMethodData + iMid;
+      if (uHash == pInfo->uHash) {
+        return pInfo;
+      } else if (uHash < pInfo->uHash) {
+        iEnd = iMid - 1;
+      } else {
+        iStart = iMid + 1;
+      }
+    } while (iStart <= iEnd);
+    iElementIndex = scriptIndex->wParentIndex;
+  }
+  return NULL;
+}
+const XFA_SCRIPTATTRIBUTEINFO* XFA_GetScriptAttributeByName(
+    XFA_ELEMENT eElement,
+    const CFX_WideStringC& wsAttributeName) {
+  int32_t iLength = wsAttributeName.GetLength();
+  if (iLength == 0) {
+    return NULL;
+  }
+  int32_t iElementIndex = eElement;
+  while (iElementIndex != -1) {
+    XFA_LPCSCRIPTHIERARCHY scriptIndex = g_XFAScriptIndex + iElementIndex;
+    int32_t icount = scriptIndex->wAttributeCount;
+    if (icount == 0) {
+      iElementIndex = scriptIndex->wParentIndex;
+      continue;
+    }
+    uint32_t uHash = FX_HashCode_String_GetW(wsAttributeName.GetPtr(), iLength);
+    int32_t iStart = scriptIndex->wAttributeStart, iEnd = iStart + icount - 1;
+    do {
+      int32_t iMid = (iStart + iEnd) / 2;
+      const XFA_SCRIPTATTRIBUTEINFO* pInfo = g_SomAttributeData + iMid;
+      if (uHash == pInfo->uHash) {
+        return pInfo;
+      } else if (uHash < pInfo->uHash) {
+        iEnd = iMid - 1;
+      } else {
+        iStart = iMid + 1;
+      }
+    } while (iStart <= iEnd);
+    iElementIndex = scriptIndex->wParentIndex;
+  }
+  return NULL;
+}
+void CXFA_Measurement::Set(const CFX_WideStringC& wsMeasure) {
+  if (wsMeasure.IsEmpty()) {
+    m_fValue = 0;
+    m_eUnit = XFA_UNIT_Unknown;
+    return;
+  }
+  int32_t iUsedLen = 0;
+  int32_t iOffset = (wsMeasure.GetAt(0) == L'=') ? 1 : 0;
+  FX_FLOAT fValue = FX_wcstof(wsMeasure.GetPtr() + iOffset,
+                              wsMeasure.GetLength() - iOffset, &iUsedLen);
+  XFA_UNIT eUnit = GetUnit(wsMeasure.Mid(iOffset + iUsedLen));
+  Set(fValue, eUnit);
+}
+FX_BOOL CXFA_Measurement::ToString(CFX_WideString& wsMeasure) const {
+  switch (GetUnit()) {
+    case XFA_UNIT_Mm:
+      wsMeasure.Format(L"%.8gmm", GetValue());
+      return TRUE;
+    case XFA_UNIT_Pt:
+      wsMeasure.Format(L"%.8gpt", GetValue());
+      return TRUE;
+    case XFA_UNIT_In:
+      wsMeasure.Format(L"%.8gin", GetValue());
+      return TRUE;
+    case XFA_UNIT_Cm:
+      wsMeasure.Format(L"%.8gcm", GetValue());
+      return TRUE;
+    case XFA_UNIT_Mp:
+      wsMeasure.Format(L"%.8gmp", GetValue());
+      return TRUE;
+    case XFA_UNIT_Pc:
+      wsMeasure.Format(L"%.8gpc", GetValue());
+      return TRUE;
+    case XFA_UNIT_Em:
+      wsMeasure.Format(L"%.8gem", GetValue());
+      return TRUE;
+    case XFA_UNIT_Percent:
+      wsMeasure.Format(L"%.8g%%", GetValue());
+      return TRUE;
+    default:
+      wsMeasure.Format(L"%.8g", GetValue());
+      return FALSE;
+  }
+}
+FX_BOOL CXFA_Measurement::ToUnit(XFA_UNIT eUnit, FX_FLOAT& fValue) const {
+  fValue = GetValue();
+  XFA_UNIT eFrom = GetUnit();
+  if (eFrom == eUnit) {
+    return TRUE;
+  }
+  switch (eFrom) {
+    case XFA_UNIT_Pt:
+      break;
+    case XFA_UNIT_Mm:
+      fValue *= 72 / 2.54f / 10;
+      break;
+    case XFA_UNIT_In:
+      fValue *= 72;
+      break;
+    case XFA_UNIT_Cm:
+      fValue *= 72 / 2.54f;
+      break;
+    case XFA_UNIT_Mp:
+      fValue *= 0.001f;
+      break;
+    case XFA_UNIT_Pc:
+      fValue *= 12.0f;
+      break;
+    default:
+      fValue = 0;
+      return FALSE;
+  }
+  switch (eUnit) {
+    case XFA_UNIT_Pt:
+      return TRUE;
+    case XFA_UNIT_Mm:
+      fValue /= 72 / 2.54f / 10;
+      return TRUE;
+    case XFA_UNIT_In:
+      fValue /= 72;
+      return TRUE;
+    case XFA_UNIT_Cm:
+      fValue /= 72 / 2.54f;
+      return TRUE;
+    case XFA_UNIT_Mp:
+      fValue /= 0.001f;
+      return TRUE;
+    case XFA_UNIT_Pc:
+      fValue /= 12.0f;
+      return TRUE;
+    default:
+      fValue = 0;
+      return FALSE;
+  }
+  return FALSE;
+}
+XFA_UNIT CXFA_Measurement::GetUnit(const CFX_WideStringC& wsUnit) {
+  if (wsUnit == FX_WSTRC(L"mm")) {
+    return XFA_UNIT_Mm;
+  } else if (wsUnit == FX_WSTRC(L"pt")) {
+    return XFA_UNIT_Pt;
+  } else if (wsUnit == FX_WSTRC(L"in")) {
+    return XFA_UNIT_In;
+  } else if (wsUnit == FX_WSTRC(L"cm")) {
+    return XFA_UNIT_Cm;
+  } else if (wsUnit == FX_WSTRC(L"pc")) {
+    return XFA_UNIT_Pc;
+  } else if (wsUnit == FX_WSTRC(L"mp")) {
+    return XFA_UNIT_Mp;
+  } else if (wsUnit == FX_WSTRC(L"em")) {
+    return XFA_UNIT_Em;
+  } else if (wsUnit == FX_WSTRC(L"%")) {
+    return XFA_UNIT_Percent;
+  } else {
+    return XFA_UNIT_Unknown;
+  }
+}
+IFX_Stream* XFA_CreateWideTextRead(const CFX_WideString& wsBuffer) {
+  return new CXFA_WideTextRead(wsBuffer);
+}
+CXFA_WideTextRead::CXFA_WideTextRead(const CFX_WideString& wsBuffer)
+    : m_wsBuffer(wsBuffer), m_iPosition(0), m_iRefCount(1) {}
+void CXFA_WideTextRead::Release() {
+  if (--m_iRefCount < 1) {
+    delete this;
+  }
+}
+IFX_Stream* CXFA_WideTextRead::Retain() {
+  m_iRefCount++;
+  return this;
+}
+FX_DWORD CXFA_WideTextRead::GetAccessModes() const {
+  return FX_STREAMACCESS_Read | FX_STREAMACCESS_Text;
+}
+int32_t CXFA_WideTextRead::GetLength() const {
+  return m_wsBuffer.GetLength() * sizeof(FX_WCHAR);
+}
+int32_t CXFA_WideTextRead::Seek(FX_STREAMSEEK eSeek, int32_t iOffset) {
+  switch (eSeek) {
+    case FX_STREAMSEEK_Begin:
+      m_iPosition = iOffset;
+      break;
+    case FX_STREAMSEEK_Current:
+      m_iPosition += iOffset;
+      break;
+    case FX_STREAMSEEK_End:
+      m_iPosition = m_wsBuffer.GetLength() + iOffset;
+      break;
+  }
+  if (m_iPosition < 0) {
+    m_iPosition = 0;
+  }
+  if (m_iPosition > m_wsBuffer.GetLength()) {
+    m_iPosition = m_wsBuffer.GetLength();
+  }
+  return GetPosition();
+}
+int32_t CXFA_WideTextRead::GetPosition() {
+  return m_iPosition * sizeof(FX_WCHAR);
+}
+FX_BOOL CXFA_WideTextRead::IsEOF() const {
+  return m_iPosition >= m_wsBuffer.GetLength();
+}
+int32_t CXFA_WideTextRead::ReadString(FX_WCHAR* pStr,
+                                      int32_t iMaxLength,
+                                      FX_BOOL& bEOS,
+                                      int32_t const* pByteSize) {
+  if (iMaxLength > m_wsBuffer.GetLength() - m_iPosition) {
+    iMaxLength = m_wsBuffer.GetLength() - m_iPosition;
+  }
+  FXSYS_wcsncpy(pStr, (const FX_WCHAR*)m_wsBuffer + m_iPosition, iMaxLength);
+  m_iPosition += iMaxLength;
+  bEOS = IsEOF();
+  return iMaxLength;
+}
+FX_WORD CXFA_WideTextRead::GetCodePage() const {
+  return (sizeof(FX_WCHAR) == 2) ? FX_CODEPAGE_UTF16LE : FX_CODEPAGE_UTF32LE;
+}
+FX_WORD CXFA_WideTextRead::SetCodePage(FX_WORD wCodePage) {
+  return GetCodePage();
+}