Move core/fxcrt/include to core/fxcrt

BUG=pdfium:611

Review-Url: https://codereview.chromium.org/2382723003

1 files changed, 860 insertions, 0 deletions

diff --git a/core/fxcrt/fx_basic.h b/core/fxcrt/fx_basic.h
new file mode 100644
index 0000000000..4cf69f896b
--- /dev/null
+++ b/core/fxcrt/fx_basic.h
@@ -0,0 +1,860 @@
+// 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
+
+#ifndef CORE_FXCRT_FX_BASIC_H_
+#define CORE_FXCRT_FX_BASIC_H_
+
+#include <algorithm>
+#include <memory>
+
+#include "core/fxcrt/fx_memory.h"
+#include "core/fxcrt/fx_stream.h"
+#include "core/fxcrt/fx_string.h"
+#include "core/fxcrt/fx_system.h"
+
+class CFX_BinaryBuf {
+ public:
+  CFX_BinaryBuf();
+  explicit CFX_BinaryBuf(FX_STRSIZE size);
+  ~CFX_BinaryBuf();
+
+  uint8_t* GetBuffer() const { return m_pBuffer.get(); }
+  FX_STRSIZE GetSize() const { return m_DataSize; }
+
+  void Clear();
+  void EstimateSize(FX_STRSIZE size, FX_STRSIZE alloc_step = 0);
+  void AppendBlock(const void* pBuf, FX_STRSIZE size);
+  void AppendString(const CFX_ByteString& str) {
+    AppendBlock(str.c_str(), str.GetLength());
+  }
+
+  void AppendByte(uint8_t byte) {
+    ExpandBuf(1);
+    m_pBuffer.get()[m_DataSize++] = byte;
+  }
+
+  void InsertBlock(FX_STRSIZE pos, const void* pBuf, FX_STRSIZE size);
+  void Delete(int start_index, int count);
+
+  // Takes ownership of |pBuf|.
+  void AttachData(uint8_t* pBuf, FX_STRSIZE size);
+
+  // Releases ownership of |m_pBuffer| and returns it.
+  uint8_t* DetachBuffer();
+
+ protected:
+  void ExpandBuf(FX_STRSIZE size);
+
+  FX_STRSIZE m_AllocStep;
+  FX_STRSIZE m_AllocSize;
+  FX_STRSIZE m_DataSize;
+  std::unique_ptr<uint8_t, FxFreeDeleter> m_pBuffer;
+};
+
+class CFX_ByteTextBuf : public CFX_BinaryBuf {
+ public:
+  FX_STRSIZE GetLength() const { return m_DataSize; }
+  CFX_ByteString MakeString() const {
+    return CFX_ByteString(m_pBuffer.get(), m_DataSize);
+  }
+  CFX_ByteStringC AsStringC() const {
+    return CFX_ByteStringC(m_pBuffer.get(), m_DataSize);
+  }
+
+  void AppendChar(int ch) { AppendByte(static_cast<uint8_t>(ch)); }
+  CFX_ByteTextBuf& operator<<(int i);
+  CFX_ByteTextBuf& operator<<(uint32_t i);
+  CFX_ByteTextBuf& operator<<(double f);
+  CFX_ByteTextBuf& operator<<(const FX_CHAR* pStr) {
+    return *this << CFX_ByteStringC(pStr);
+  }
+  CFX_ByteTextBuf& operator<<(const CFX_ByteString& str) {
+    return *this << str.AsStringC();
+  }
+  CFX_ByteTextBuf& operator<<(const CFX_ByteStringC& lpsz);
+  CFX_ByteTextBuf& operator<<(const CFX_ByteTextBuf& buf);
+};
+
+class CFX_WideTextBuf : public CFX_BinaryBuf {
+ public:
+  void AppendChar(FX_WCHAR wch);
+  FX_STRSIZE GetLength() const { return m_DataSize / sizeof(FX_WCHAR); }
+  FX_WCHAR* GetBuffer() const {
+    return reinterpret_cast<FX_WCHAR*>(m_pBuffer.get());
+  }
+
+  CFX_WideStringC AsStringC() const {
+    return CFX_WideStringC(reinterpret_cast<const FX_WCHAR*>(m_pBuffer.get()),
+                           m_DataSize / sizeof(FX_WCHAR));
+  }
+  CFX_WideString MakeString() const {
+    return CFX_WideString(reinterpret_cast<const FX_WCHAR*>(m_pBuffer.get()),
+                          m_DataSize / sizeof(FX_WCHAR));
+  }
+
+  void Delete(int start_index, int count) {
+    CFX_BinaryBuf::Delete(start_index * sizeof(FX_WCHAR),
+                          count * sizeof(FX_WCHAR));
+  }
+
+  CFX_WideTextBuf& operator<<(int i);
+  CFX_WideTextBuf& operator<<(double f);
+  CFX_WideTextBuf& operator<<(const FX_WCHAR* lpsz);
+  CFX_WideTextBuf& operator<<(const CFX_WideStringC& str);
+  CFX_WideTextBuf& operator<<(const CFX_WideString& str);
+  CFX_WideTextBuf& operator<<(const CFX_WideTextBuf& buf);
+};
+
+class CFX_FileBufferArchive {
+ public:
+  CFX_FileBufferArchive();
+  ~CFX_FileBufferArchive();
+
+  void Clear();
+  bool Flush();
+  int32_t AppendBlock(const void* pBuf, size_t size);
+  int32_t AppendByte(uint8_t byte);
+  int32_t AppendDWord(uint32_t i);
+  int32_t AppendString(const CFX_ByteStringC& lpsz);
+
+  // |pFile| must outlive the CFX_FileBufferArchive.
+  void AttachFile(IFX_StreamWrite* pFile);
+
+ private:
+  static const size_t kBufSize = 32768;
+
+  size_t m_Length;
+  std::unique_ptr<uint8_t, FxFreeDeleter> m_pBuffer;
+  IFX_StreamWrite* m_pFile;
+};
+
+class CFX_CharMap {
+ public:
+  static CFX_ByteString GetByteString(uint16_t codepage,
+                                      const CFX_WideStringC& wstr);
+
+  static CFX_WideString GetWideString(uint16_t codepage,
+                                      const CFX_ByteStringC& bstr);
+
+  CFX_CharMap() = delete;
+};
+
+class CFX_UTF8Decoder {
+ public:
+  CFX_UTF8Decoder() { m_PendingBytes = 0; }
+
+  void Clear();
+
+  void Input(uint8_t byte);
+
+  void AppendChar(uint32_t ch);
+
+  void ClearStatus() { m_PendingBytes = 0; }
+
+  CFX_WideStringC GetResult() const { return m_Buffer.AsStringC(); }
+
+ protected:
+  int m_PendingBytes;
+
+  uint32_t m_PendingChar;
+
+  CFX_WideTextBuf m_Buffer;
+};
+
+class CFX_UTF8Encoder {
+ public:
+  CFX_UTF8Encoder() {}
+
+  void Input(FX_WCHAR unicode);
+  void AppendStr(const CFX_ByteStringC& str) { m_Buffer << str; }
+  CFX_ByteStringC GetResult() const { return m_Buffer.AsStringC(); }
+
+ protected:
+  CFX_ByteTextBuf m_Buffer;
+};
+
+class CFX_BasicArray {
+ protected:
+  explicit CFX_BasicArray(int unit_size);
+  CFX_BasicArray(const CFX_BasicArray&) = delete;
+  ~CFX_BasicArray();
+
+  FX_BOOL SetSize(int nNewSize);
+  FX_BOOL Append(const CFX_BasicArray& src);
+  FX_BOOL Copy(const CFX_BasicArray& src);
+  uint8_t* InsertSpaceAt(int nIndex, int nCount);
+  FX_BOOL RemoveAt(int nIndex, int nCount);
+  FX_BOOL InsertAt(int nStartIndex, const CFX_BasicArray* pNewArray);
+  const void* GetDataPtr(int index) const;
+
+ protected:
+  uint8_t* m_pData;
+  int m_nSize;
+  int m_nMaxSize;
+  int m_nUnitSize;
+};
+
+template <class TYPE>
+class CFX_ArrayTemplate : public CFX_BasicArray {
+ public:
+  CFX_ArrayTemplate() : CFX_BasicArray(sizeof(TYPE)) {}
+
+  int GetSize() const { return m_nSize; }
+
+  int GetUpperBound() const { return m_nSize - 1; }
+
+  FX_BOOL SetSize(int nNewSize) { return CFX_BasicArray::SetSize(nNewSize); }
+
+  void RemoveAll() { SetSize(0); }
+
+  const TYPE GetAt(int nIndex) const {
+    if (nIndex < 0 || nIndex >= m_nSize) {
+      PDFIUM_IMMEDIATE_CRASH();
+    }
+    return ((const TYPE*)m_pData)[nIndex];
+  }
+
+  FX_BOOL SetAt(int nIndex, TYPE newElement) {
+    if (nIndex < 0 || nIndex >= m_nSize) {
+      return FALSE;
+    }
+    ((TYPE*)m_pData)[nIndex] = newElement;
+    return TRUE;
+  }
+
+  TYPE& ElementAt(int nIndex) {
+    if (nIndex < 0 || nIndex >= m_nSize) {
+      PDFIUM_IMMEDIATE_CRASH();
+    }
+    return ((TYPE*)m_pData)[nIndex];
+  }
+
+  const TYPE* GetData() const { return (const TYPE*)m_pData; }
+
+  TYPE* GetData() { return (TYPE*)m_pData; }
+
+  FX_BOOL SetAtGrow(int nIndex, TYPE newElement) {
+    if (nIndex < 0)
+      return FALSE;
+
+    if (nIndex >= m_nSize && !SetSize(nIndex + 1))
+      return FALSE;
+
+    ((TYPE*)m_pData)[nIndex] = newElement;
+    return TRUE;
+  }
+
+  FX_BOOL Add(TYPE newElement) {
+    if (m_nSize < m_nMaxSize) {
+      m_nSize++;
+    } else if (!SetSize(m_nSize + 1)) {
+      return FALSE;
+    }
+    ((TYPE*)m_pData)[m_nSize - 1] = newElement;
+    return TRUE;
+  }
+
+  FX_BOOL Append(const CFX_ArrayTemplate& src) {
+    return CFX_BasicArray::Append(src);
+  }
+
+  FX_BOOL Copy(const CFX_ArrayTemplate& src) {
+    return CFX_BasicArray::Copy(src);
+  }
+
+  TYPE* GetDataPtr(int index) {
+    return (TYPE*)CFX_BasicArray::GetDataPtr(index);
+  }
+
+  TYPE* AddSpace() { return (TYPE*)CFX_BasicArray::InsertSpaceAt(m_nSize, 1); }
+
+  TYPE* InsertSpaceAt(int nIndex, int nCount) {
+    return (TYPE*)CFX_BasicArray::InsertSpaceAt(nIndex, nCount);
+  }
+
+  const TYPE operator[](int nIndex) const {
+    if (nIndex < 0 || nIndex >= m_nSize) {
+      *(volatile char*)0 = '\0';
+    }
+    return ((const TYPE*)m_pData)[nIndex];
+  }
+
+  TYPE& operator[](int nIndex) {
+    if (nIndex < 0 || nIndex >= m_nSize) {
+      *(volatile char*)0 = '\0';
+    }
+    return ((TYPE*)m_pData)[nIndex];
+  }
+
+  FX_BOOL InsertAt(int nIndex, TYPE newElement, int nCount = 1) {
+    if (!InsertSpaceAt(nIndex, nCount)) {
+      return FALSE;
+    }
+    while (nCount--) {
+      ((TYPE*)m_pData)[nIndex++] = newElement;
+    }
+    return TRUE;
+  }
+
+  FX_BOOL RemoveAt(int nIndex, int nCount = 1) {
+    return CFX_BasicArray::RemoveAt(nIndex, nCount);
+  }
+
+  FX_BOOL InsertAt(int nStartIndex, const CFX_BasicArray* pNewArray) {
+    return CFX_BasicArray::InsertAt(nStartIndex, pNewArray);
+  }
+
+  int Find(TYPE data, int iStart = 0) const {
+    if (iStart < 0) {
+      return -1;
+    }
+    for (; iStart < (int)m_nSize; iStart++)
+      if (((TYPE*)m_pData)[iStart] == data) {
+        return iStart;
+      }
+    return -1;
+  }
+};
+
+#ifdef PDF_ENABLE_XFA
+typedef CFX_ArrayTemplate<CFX_WideStringC> CFX_WideStringCArray;
+typedef CFX_ArrayTemplate<FX_FLOAT> CFX_FloatArray;
+typedef CFX_ArrayTemplate<uint8_t> CFX_ByteArray;
+typedef CFX_ArrayTemplate<int32_t> CFX_Int32Array;
+
+template <class ObjectClass>
+class CFX_ObjectArray : public CFX_BasicArray {
+ public:
+  CFX_ObjectArray() : CFX_BasicArray(sizeof(ObjectClass)) {}
+
+  ~CFX_ObjectArray() { RemoveAll(); }
+
+  void Add(const ObjectClass& data) {
+    new ((void*)InsertSpaceAt(m_nSize, 1)) ObjectClass(data);
+  }
+
+  ObjectClass& Add() {
+    return *(ObjectClass*)new ((void*)InsertSpaceAt(m_nSize, 1)) ObjectClass();
+  }
+
+  void* AddSpace() { return InsertSpaceAt(m_nSize, 1); }
+
+  int32_t Append(const CFX_ObjectArray& src,
+                 int32_t nStart = 0,
+                 int32_t nCount = -1) {
+    if (nCount == 0) {
+      return 0;
+    }
+    int32_t nSize = src.GetSize();
+    if (!nSize) {
+      return 0;
+    }
+    ASSERT(nStart > -1 && nStart < nSize);
+    if (nCount < 0) {
+      nCount = nSize;
+    }
+    if (nStart + nCount > nSize) {
+      nCount = nSize - nStart;
+    }
+    if (nCount < 1) {
+      return 0;
+    }
+    nSize = m_nSize;
+    InsertSpaceAt(m_nSize, nCount);
+    ObjectClass* pStartObj = (ObjectClass*)GetDataPtr(nSize);
+    nSize = nStart + nCount;
+    for (int32_t i = nStart; i < nSize; i++, pStartObj++) {
+      new ((void*)pStartObj) ObjectClass(src[i]);
+    }
+    return nCount;
+  }
+
+  int32_t Copy(const CFX_ObjectArray& src,
+               int32_t nStart = 0,
+               int32_t nCount = -1) {
+    if (nCount == 0) {
+      return 0;
+    }
+    int32_t nSize = src.GetSize();
+    if (!nSize) {
+      return 0;
+    }
+    ASSERT(nStart > -1 && nStart < nSize);
+    if (nCount < 0) {
+      nCount = nSize;
+    }
+    if (nStart + nCount > nSize) {
+      nCount = nSize - nStart;
+    }
+    if (nCount < 1) {
+      return 0;
+    }
+    RemoveAll();
+    SetSize(nCount);
+    ObjectClass* pStartObj = (ObjectClass*)m_pData;
+    nSize = nStart + nCount;
+    for (int32_t i = nStart; i < nSize; i++, pStartObj++) {
+      new ((void*)pStartObj) ObjectClass(src[i]);
+    }
+    return nCount;
+  }
+
+  int GetSize() const { return m_nSize; }
+
+  ObjectClass& operator[](int index) const {
+    ASSERT(index < m_nSize);
+    return *(ObjectClass*)CFX_BasicArray::GetDataPtr(index);
+  }
+
+  ObjectClass* GetDataPtr(int index) {
+    return (ObjectClass*)CFX_BasicArray::GetDataPtr(index);
+  }
+
+  void RemoveAt(int index) {
+    ASSERT(index < m_nSize);
+    ((ObjectClass*)GetDataPtr(index))->~ObjectClass();
+    CFX_BasicArray::RemoveAt(index, 1);
+  }
+
+  void RemoveAll() {
+    for (int i = 0; i < m_nSize; i++) {
+      ((ObjectClass*)GetDataPtr(i))->~ObjectClass();
+    }
+    CFX_BasicArray::SetSize(0);
+  }
+};
+typedef CFX_ObjectArray<CFX_ByteString> CFX_ByteStringArray;
+typedef CFX_ObjectArray<CFX_WideString> CFX_WideStringArray;
+#endif  // PDF_ENABLE_XFA
+
+template <class DataType, int FixedSize>
+class CFX_FixedBufGrow {
+ public:
+  explicit CFX_FixedBufGrow(int data_size) {
+    if (data_size > FixedSize) {
+      m_pGrowData.reset(FX_Alloc(DataType, data_size));
+      return;
+    }
+    FXSYS_memset(m_FixedData, 0, sizeof(DataType) * FixedSize);
+  }
+  operator DataType*() { return m_pGrowData ? m_pGrowData.get() : m_FixedData; }
+
+ private:
+  DataType m_FixedData[FixedSize];
+  std::unique_ptr<DataType, FxFreeDeleter> m_pGrowData;
+};
+
+#ifdef PDF_ENABLE_XFA
+class CFX_MapPtrToPtr {
+ protected:
+  struct CAssoc {
+    CAssoc* pNext;
+    void* key;
+    void* value;
+  };
+
+ public:
+  CFX_MapPtrToPtr(int nBlockSize = 10);
+  ~CFX_MapPtrToPtr();
+
+  int GetCount() const { return m_nCount; }
+  bool IsEmpty() const { return m_nCount == 0; }
+
+  FX_BOOL Lookup(void* key, void*& rValue) const;
+
+  void* GetValueAt(void* key) const;
+
+  void*& operator[](void* key);
+
+  void SetAt(void* key, void* newValue) { (*this)[key] = newValue; }
+
+  FX_BOOL RemoveKey(void* key);
+
+  void RemoveAll();
+
+  FX_POSITION GetStartPosition() const {
+    return m_nCount == 0 ? nullptr : (FX_POSITION)-1;
+  }
+
+  void GetNextAssoc(FX_POSITION& rNextPosition,
+                    void*& rKey,
+                    void*& rValue) const;
+
+  uint32_t GetHashTableSize() const { return m_nHashTableSize; }
+
+  void InitHashTable(uint32_t hashSize, FX_BOOL bAllocNow = TRUE);
+
+ protected:
+  CAssoc** m_pHashTable;
+
+  uint32_t m_nHashTableSize;
+
+  int m_nCount;
+
+  CAssoc* m_pFreeList;
+
+  struct CFX_Plex* m_pBlocks;
+
+  int m_nBlockSize;
+
+  uint32_t HashKey(void* key) const;
+
+  CAssoc* NewAssoc();
+
+  void FreeAssoc(CAssoc* pAssoc);
+
+  CAssoc* GetAssocAt(void* key, uint32_t& hash) const;
+};
+
+template <class KeyType, class ValueType>
+class CFX_MapPtrTemplate : public CFX_MapPtrToPtr {
+ public:
+  CFX_MapPtrTemplate() : CFX_MapPtrToPtr(10) {}
+
+  FX_BOOL Lookup(KeyType key, ValueType& rValue) const {
+    void* pValue = nullptr;
+    if (!CFX_MapPtrToPtr::Lookup((void*)(uintptr_t)key, pValue)) {
+      return FALSE;
+    }
+    rValue = (ValueType)(uintptr_t)pValue;
+    return TRUE;
+  }
+
+  ValueType& operator[](KeyType key) {
+    return (ValueType&)CFX_MapPtrToPtr::operator[]((void*)(uintptr_t)key);
+  }
+
+  void SetAt(KeyType key, ValueType newValue) {
+    CFX_MapPtrToPtr::SetAt((void*)(uintptr_t)key, (void*)(uintptr_t)newValue);
+  }
+
+  FX_BOOL RemoveKey(KeyType key) {
+    return CFX_MapPtrToPtr::RemoveKey((void*)(uintptr_t)key);
+  }
+
+  void GetNextAssoc(FX_POSITION& rNextPosition,
+                    KeyType& rKey,
+                    ValueType& rValue) const {
+    void* pKey = nullptr;
+    void* pValue = nullptr;
+    CFX_MapPtrToPtr::GetNextAssoc(rNextPosition, pKey, pValue);
+    rKey = (KeyType)(uintptr_t)pKey;
+    rValue = (ValueType)(uintptr_t)pValue;
+  }
+};
+#endif  // PDF_ENABLE_XFA
+
+class CFX_PtrList {
+ protected:
+  struct CNode {
+    CNode* pNext;
+    CNode* pPrev;
+    void* data;
+  };
+
+ public:
+  CFX_PtrList(int nBlockSize = 10);
+
+  FX_POSITION GetHeadPosition() const { return (FX_POSITION)m_pNodeHead; }
+  FX_POSITION GetTailPosition() const { return (FX_POSITION)m_pNodeTail; }
+
+  void* GetNext(FX_POSITION& rPosition) const {
+    CNode* pNode = (CNode*)rPosition;
+    rPosition = (FX_POSITION)pNode->pNext;
+    return pNode->data;
+  }
+
+  void* GetPrev(FX_POSITION& rPosition) const {
+    CNode* pNode = (CNode*)rPosition;
+    rPosition = (FX_POSITION)pNode->pPrev;
+    return pNode->data;
+  }
+
+  FX_POSITION GetNextPosition(FX_POSITION pos) const {
+    return ((CNode*)pos)->pNext;
+  }
+
+  FX_POSITION GetPrevPosition(FX_POSITION pos) const {
+    return ((CNode*)pos)->pPrev;
+  }
+
+  void* GetAt(FX_POSITION rPosition) const {
+    CNode* pNode = (CNode*)rPosition;
+    return pNode->data;
+  }
+
+  int GetCount() const { return m_nCount; }
+  FX_POSITION AddTail(void* newElement);
+  FX_POSITION AddHead(void* newElement);
+
+  void SetAt(FX_POSITION pos, void* newElement) {
+    CNode* pNode = (CNode*)pos;
+    pNode->data = newElement;
+  }
+  FX_POSITION InsertAfter(FX_POSITION pos, void* newElement);
+
+  FX_POSITION Find(void* searchValue, FX_POSITION startAfter = nullptr) const;
+  FX_POSITION FindIndex(int index) const;
+
+  void RemoveAt(FX_POSITION pos);
+  void RemoveAll();
+
+ protected:
+  CNode* m_pNodeHead;
+  CNode* m_pNodeTail;
+  int m_nCount;
+  CNode* m_pNodeFree;
+  struct CFX_Plex* m_pBlocks;
+  int m_nBlockSize;
+
+  CNode* NewNode(CNode* pPrev, CNode* pNext);
+  void FreeNode(CNode* pNode);
+
+ public:
+  ~CFX_PtrList();
+};
+
+#ifdef PDF_ENABLE_XFA
+typedef void (*PD_CALLBACK_FREEDATA)(void* pData);
+#endif  // PDF_ENABLE_XFA
+
+class CFX_BitStream {
+ public:
+  void Init(const uint8_t* pData, uint32_t dwSize);
+
+  uint32_t GetBits(uint32_t nBits);
+
+  void ByteAlign();
+
+  FX_BOOL IsEOF() { return m_BitPos >= m_BitSize; }
+
+  void SkipBits(uint32_t nBits) { m_BitPos += nBits; }
+
+  void Rewind() { m_BitPos = 0; }
+
+  uint32_t GetPos() const { return m_BitPos; }
+
+  uint32_t BitsRemaining() const {
+    return m_BitSize >= m_BitPos ? m_BitSize - m_BitPos : 0;
+  }
+
+ protected:
+  uint32_t m_BitPos;
+
+  uint32_t m_BitSize;
+
+  const uint8_t* m_pData;
+};
+
+class IFX_Pause {
+ public:
+  virtual ~IFX_Pause() {}
+  virtual FX_BOOL NeedToPauseNow() = 0;
+};
+
+template <typename T>
+class CFX_AutoRestorer {
+ public:
+  explicit CFX_AutoRestorer(T* location)
+      : m_Location(location), m_OldValue(*location) {}
+  ~CFX_AutoRestorer() { *m_Location = m_OldValue; }
+
+ private:
+  T* const m_Location;
+  const T m_OldValue;
+};
+
+#define FX_DATALIST_LENGTH 1024
+template <size_t unit>
+class CFX_SortListArray {
+ protected:
+  struct DataList {
+    int32_t start;
+
+    int32_t count;
+    uint8_t* data;
+  };
+
+ public:
+  CFX_SortListArray() : m_CurList(0) {}
+
+  ~CFX_SortListArray() { Clear(); }
+
+  void Clear() {
+    for (int32_t i = m_DataLists.GetUpperBound(); i >= 0; i--) {
+      DataList list = m_DataLists.ElementAt(i);
+      FX_Free(list.data);
+    }
+    m_DataLists.RemoveAll();
+    m_CurList = 0;
+  }
+
+  void Append(int32_t nStart, int32_t nCount) {
+    if (nStart < 0) {
+      return;
+    }
+    while (nCount > 0) {
+      int32_t temp_count = std::min(nCount, FX_DATALIST_LENGTH);
+      DataList list;
+      list.data = FX_Alloc2D(uint8_t, temp_count, unit);
+      list.start = nStart;
+      list.count = temp_count;
+      Append(list);
+      nCount -= temp_count;
+      nStart += temp_count;
+    }
+  }
+
+  uint8_t* GetAt(int32_t nIndex) {
+    if (nIndex < 0) {
+      return nullptr;
+    }
+    if (m_CurList < 0 || m_CurList >= m_DataLists.GetSize()) {
+      return nullptr;
+    }
+    DataList* pCurList = m_DataLists.GetDataPtr(m_CurList);
+    if (!pCurList || nIndex < pCurList->start ||
+        nIndex >= pCurList->start + pCurList->count) {
+      pCurList = nullptr;
+      int32_t iStart = 0;
+      int32_t iEnd = m_DataLists.GetUpperBound();
+      int32_t iMid = 0;
+      while (iStart <= iEnd) {
+        iMid = (iStart + iEnd) / 2;
+        DataList* list = m_DataLists.GetDataPtr(iMid);
+        if (nIndex < list->start) {
+          iEnd = iMid - 1;
+        } else if (nIndex >= list->start + list->count) {
+          iStart = iMid + 1;
+        } else {
+          pCurList = list;
+          m_CurList = iMid;
+          break;
+        }
+      }
+    }
+    return pCurList ? pCurList->data + (nIndex - pCurList->start) * unit
+                    : nullptr;
+  }
+
+ protected:
+  void Append(const DataList& list) {
+    int32_t iStart = 0;
+    int32_t iEnd = m_DataLists.GetUpperBound();
+    int32_t iFind = 0;
+    while (iStart <= iEnd) {
+      int32_t iMid = (iStart + iEnd) / 2;
+      DataList* cur_list = m_DataLists.GetDataPtr(iMid);
+      if (list.start < cur_list->start + cur_list->count) {
+        iEnd = iMid - 1;
+      } else {
+        if (iMid == iEnd) {
+          iFind = iMid + 1;
+          break;
+        }
+        DataList* next_list = m_DataLists.GetDataPtr(iMid + 1);
+        if (list.start < next_list->start) {
+          iFind = iMid + 1;
+          break;
+        } else {
+          iStart = iMid + 1;
+        }
+      }
+    }
+    m_DataLists.InsertAt(iFind, list);
+  }
+  int32_t m_CurList;
+  CFX_ArrayTemplate<DataList> m_DataLists;
+};
+template <typename T1, typename T2>
+class CFX_ListArrayTemplate {
+ public:
+  void Clear() { m_Data.Clear(); }
+
+  void Add(int32_t nStart, int32_t nCount) { m_Data.Append(nStart, nCount); }
+
+  T2& operator[](int32_t nIndex) {
+    uint8_t* data = m_Data.GetAt(nIndex);
+    ASSERT(data);
+    return (T2&)(*(volatile T2*)data);
+  }
+
+  T2* GetPtrAt(int32_t nIndex) { return (T2*)m_Data.GetAt(nIndex); }
+
+ protected:
+  T1 m_Data;
+};
+typedef CFX_ListArrayTemplate<CFX_SortListArray<sizeof(FX_FILESIZE)>,
+                              FX_FILESIZE>
+    CFX_FileSizeListArray;
+
+#ifdef PDF_ENABLE_XFA
+class IFX_Retainable {
+ public:
+  virtual uint32_t Retain() = 0;
+  virtual uint32_t Release() = 0;
+
+ protected:
+  virtual ~IFX_Retainable() {}
+};
+#define FX_IsOdd(a) ((a)&1)
+#endif  // PDF_ENABLE_XFA
+
+class CFX_Vector_3by1 {
+ public:
+  CFX_Vector_3by1() : a(0.0f), b(0.0f), c(0.0f) {}
+
+  CFX_Vector_3by1(FX_FLOAT a1, FX_FLOAT b1, FX_FLOAT c1)
+      : a(a1), b(b1), c(c1) {}
+
+  FX_FLOAT a;
+  FX_FLOAT b;
+  FX_FLOAT c;
+};
+class CFX_Matrix_3by3 {
+ public:
+  CFX_Matrix_3by3()
+      : a(0.0f),
+        b(0.0f),
+        c(0.0f),
+        d(0.0f),
+        e(0.0f),
+        f(0.0f),
+        g(0.0f),
+        h(0.0f),
+        i(0.0f) {}
+
+  CFX_Matrix_3by3(FX_FLOAT a1,
+                  FX_FLOAT b1,
+                  FX_FLOAT c1,
+                  FX_FLOAT d1,
+                  FX_FLOAT e1,
+                  FX_FLOAT f1,
+                  FX_FLOAT g1,
+                  FX_FLOAT h1,
+                  FX_FLOAT i1)
+      : a(a1), b(b1), c(c1), d(d1), e(e1), f(f1), g(g1), h(h1), i(i1) {}
+
+  CFX_Matrix_3by3 Inverse();
+
+  CFX_Matrix_3by3 Multiply(const CFX_Matrix_3by3& m);
+
+  CFX_Vector_3by1 TransformVector(const CFX_Vector_3by1& v);
+
+  FX_FLOAT a;
+  FX_FLOAT b;
+  FX_FLOAT c;
+  FX_FLOAT d;
+  FX_FLOAT e;
+  FX_FLOAT f;
+  FX_FLOAT g;
+  FX_FLOAT h;
+  FX_FLOAT i;
+};
+
+uint32_t GetBits32(const uint8_t* pData, int bitpos, int nbits);
+
+#endif  // CORE_FXCRT_FX_BASIC_H_