1 files changed, 144 insertions, 0 deletions
diff --git a/core/fxcrt/xml/cfx_saxreader.h b/core/fxcrt/xml/cfx_saxreader.h
new file mode 100644
index 0000000000..af3c26f94a
--- /dev/null
+++ b/core/fxcrt/xml/cfx_saxreader.h
@@ -0,0 +1,144 @@
+// 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_XML_CFX_SAXREADER_H_
+#define CORE_FXCRT_XML_CFX_SAXREADER_H_
+
+#include <memory>
+#include <stack>
+
+#include "core/fxcrt/fx_basic.h"
+
+class CFX_SAXCommentContext;
+class CFX_SAXContext;
+class CFX_SAXReaderHandler;
+enum class CFX_SaxMode;
+
+class CFX_SAXItem {
+ public:
+  enum class Type {
+    Unknown = 0,
+    Instruction,
+    Declaration,
+    Comment,
+    Tag,
+    Text,
+    CharData,
+  };
+
+  explicit CFX_SAXItem(uint32_t id)
+      : m_pNode(nullptr), m_eNode(Type::Unknown), m_dwID(id), m_bSkip(false) {}
+
+  CFX_SAXContext* m_pNode;
+  Type m_eNode;
+  const uint32_t m_dwID;
+  bool m_bSkip;
+};
+
+class CFX_SAXFile {
+ public:
+  CFX_SAXFile();
+  ~CFX_SAXFile();
+
+  bool StartFile(const CFX_RetainPtr<IFX_SeekableReadStream>& pFile,
+                 uint32_t dwStart,
+                 uint32_t dwLen);
+  bool ReadNextBlock();
+  void Reset();
+
+  CFX_RetainPtr<IFX_SeekableReadStream> m_pFile;
+  uint32_t m_dwStart;
+  uint32_t m_dwEnd;
+  uint32_t m_dwCur;
+  uint8_t* m_pBuf;
+  uint32_t m_dwBufSize;
+  uint32_t m_dwBufIndex;
+};
+
+enum CFX_SaxParseMode {
+  CFX_SaxParseMode_NotConvert_amp = 1 << 0,
+  CFX_SaxParseMode_NotConvert_lt = 1 << 1,
+  CFX_SaxParseMode_NotConvert_gt = 1 << 2,
+  CFX_SaxParseMode_NotConvert_apos = 1 << 3,
+  CFX_SaxParseMode_NotConvert_quot = 1 << 4,
+  CFX_SaxParseMode_NotConvert_sharp = 1 << 5,
+  CFX_SaxParseMode_NotSkipSpace = 1 << 6
+};
+
+class CFX_SAXReader {
+ public:
+  CFX_SAXReader();
+  ~CFX_SAXReader();
+
+  int32_t StartParse(const CFX_RetainPtr<IFX_SeekableReadStream>& pFile,
+                     uint32_t dwStart = 0,
+                     uint32_t dwLen = -1,
+                     uint32_t dwParseMode = 0);
+  int32_t ContinueParse(IFX_Pause* pPause = nullptr);
+  void SkipCurrentNode();
+  void SetHandler(CFX_SAXReaderHandler* pHandler) { m_pHandler = pHandler; }
+  void AppendData(uint8_t ch);
+  void AppendName(uint8_t ch);
+  void ParseText();
+  void ParseNodeStart();
+  void ParseInstruction();
+  void ParseDeclOrComment();
+  void ParseDeclNode();
+  void ParseComment();
+  void ParseCommentContent();
+  void ParseTagName();
+  void ParseTagAttributeName();
+  void ParseTagAttributeEqual();
+  void ParseTagAttributeValue();
+  void ParseMaybeClose();
+  void ParseTagClose();
+  void ParseTagEnd();
+  void ParseTargetData();
+
+ private:
+  void Reset();
+  void Push();
+  void Pop();
+  CFX_SAXItem* GetCurrentItem() const;
+  bool SkipSpace(uint8_t ch);
+  void SkipNode();
+  void NotifyData();
+  void NotifyEnter();
+  void NotifyAttribute();
+  void NotifyBreak();
+  void NotifyClose();
+  void NotifyEnd();
+  void NotifyTargetData();
+  void ReallocDataBuffer();
+  void ReallocNameBuffer();
+  void ParseChar(uint8_t ch);
+
+  CFX_SAXFile m_File;
+  CFX_SAXReaderHandler* m_pHandler;
+  int32_t m_iState;
+  std::stack<std::unique_ptr<CFX_SAXItem>> m_Stack;
+  uint32_t m_dwItemID;
+  CFX_SaxMode m_eMode;
+  CFX_SaxMode m_ePrevMode;
+  bool m_bCharData;
+  uint8_t m_CurByte;
+  uint32_t m_dwDataOffset;
+  std::stack<char> m_SkipStack;
+  uint8_t m_SkipChar;
+  uint32_t m_dwNodePos;
+  uint8_t* m_pszData;
+  int32_t m_iDataSize;
+  int32_t m_iDataLength;
+  int32_t m_iEntityStart;
+  int32_t m_iDataPos;
+  uint8_t* m_pszName;
+  int32_t m_iNameSize;
+  int32_t m_iNameLength;
+  uint32_t m_dwParseMode;
+  std::unique_ptr<CFX_SAXCommentContext> m_pCommentContext;
+};
+
+#endif  // CORE_FXCRT_XML_CFX_SAXREADER_H_