1 files changed, 119 insertions, 0 deletions
diff --git a/xfa/src/fde/css/fde_csssyntax.h b/xfa/src/fde/css/fde_csssyntax.h
new file mode 100644
index 0000000000..dc7acdb3d5
--- /dev/null
+++ b/xfa/src/fde/css/fde_csssyntax.h
@@ -0,0 +1,119 @@
+// 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 XFA_SRC_FDE_CSS_FDE_CSSSYNTAX_H_
+#define XFA_SRC_FDE_CSS_FDE_CSSSYNTAX_H_
+
+#include "xfa/src/fde/css/fde_css.h"
+#include "xfa/src/fgas/crt/fgas_memory.h"
+#include "xfa/src/fgas/crt/fgas_stream.h"
+
+class CFDE_CSSTextBuf : public CFX_Target {
+ public:
+  CFDE_CSSTextBuf();
+  ~CFDE_CSSTextBuf();
+  FX_BOOL AttachBuffer(const FX_WCHAR* pBuffer, int32_t iBufLen);
+  FX_BOOL EstimateSize(int32_t iAllocSize);
+  int32_t LoadFromStream(IFX_Stream* pTxtStream,
+                         int32_t iStreamOffset,
+                         int32_t iMaxChars,
+                         FX_BOOL& bEOS);
+  FX_BOOL AppendChar(FX_WCHAR wch) {
+    if (m_iDatLen >= m_iBufLen && !ExpandBuf(m_iBufLen * 2)) {
+      return FALSE;
+    }
+    return (m_pBuffer[m_iDatLen++] = wch), TRUE;
+  }
+  void Clear() { m_iDatPos = m_iDatLen = 0; }
+  void Reset();
+  int32_t TrimEnd() {
+    while (m_iDatLen > 0 && m_pBuffer[m_iDatLen - 1] <= ' ') {
+      --m_iDatLen;
+    }
+    AppendChar(0);
+    return --m_iDatLen;
+  }
+  void Subtract(int32_t iStart, int32_t iLength);
+  FX_BOOL IsEOF() const { return m_iDatPos >= m_iDatLen; }
+  FX_WCHAR GetAt(int32_t index) const { return m_pBuffer[index]; }
+  FX_WCHAR GetChar() const { return m_pBuffer[m_iDatPos]; }
+  FX_WCHAR GetNextChar() const {
+    return (m_iDatPos + 1 >= m_iDatLen) ? 0 : m_pBuffer[m_iDatPos + 1];
+  }
+  void MoveNext() { m_iDatPos++; }
+  int32_t GetLength() const { return m_iDatLen; }
+  const FX_WCHAR* GetBuffer() const { return m_pBuffer; }
+
+ protected:
+  FX_BOOL ExpandBuf(int32_t iDesiredSize);
+  FX_BOOL m_bExtBuf;
+  FX_WCHAR* m_pBuffer;
+  int32_t m_iBufLen;
+  int32_t m_iDatLen;
+  int32_t m_iDatPos;
+};
+
+#define FDE_CSSSYNTAXCHECK_AllowCharset 1
+#define FDE_CSSSYNTAXCHECK_AllowImport 2
+
+enum FDE_CSSSYNTAXMODE {
+  FDE_CSSSYNTAXMODE_RuleSet,
+  FDE_CSSSYNTAXMODE_Comment,
+  FDE_CSSSYNTAXMODE_AtRule,
+  FDE_CSSSYNTAXMODE_UnknownRule,
+  FDE_CSSSYNTAXMODE_Charset,
+  FDE_CSSSYNTAXMODE_Import,
+  FDE_CSSSYNTAXMODE_MediaRule,
+  FDE_CSSSYNTAXMODE_URI,
+  FDE_CSSSYNTAXMODE_MediaType,
+  FDE_CSSSYNTAXMODE_Selector,
+  FDE_CSSSYNTAXMODE_PropertyName,
+  FDE_CSSSYNTAXMODE_PropertyValue,
+};
+
+class CFDE_CSSSyntaxParser : public IFDE_CSSSyntaxParser, public CFX_Target {
+ public:
+  CFDE_CSSSyntaxParser();
+  ~CFDE_CSSSyntaxParser();
+  virtual void Release() { delete this; }
+  virtual FX_BOOL Init(IFX_Stream* pStream,
+                       int32_t iCSSPlaneSize,
+                       int32_t iTextDataSize = 32,
+                       FX_BOOL bOnlyDeclaration = FALSE);
+  virtual FX_BOOL Init(const FX_WCHAR* pBuffer,
+                       int32_t iBufferSize,
+                       int32_t iTextDatSize = 32,
+                       FX_BOOL bOnlyDeclaration = FALSE);
+  virtual FDE_CSSSYNTAXSTATUS DoSyntaxParse();
+  virtual const FX_WCHAR* GetCurrentString(int32_t& iLength) const;
+
+ protected:
+  void Reset(FX_BOOL bOnlyDeclaration);
+  void SwitchMode(FDE_CSSSYNTAXMODE eMode);
+  int32_t SwitchToComment();
+
+  FX_BOOL RestoreMode();
+  FX_BOOL AppendChar(FX_WCHAR wch);
+  int32_t SaveTextData();
+  FX_BOOL IsCharsetEnabled() const {
+    return (m_dwCheck & FDE_CSSSYNTAXCHECK_AllowCharset) != 0;
+  }
+  void DisableCharset() { m_dwCheck = FDE_CSSSYNTAXCHECK_AllowImport; }
+  FX_BOOL IsImportEnabled() const;
+  void DisableImport() { m_dwCheck = 0; }
+  IFX_Stream* m_pStream;
+  int32_t m_iStreamPos;
+  int32_t m_iPlaneSize;
+  CFDE_CSSTextBuf m_TextData;
+  CFDE_CSSTextBuf m_TextPlane;
+  int32_t m_iTextDatLen;
+  FX_DWORD m_dwCheck;
+  FDE_CSSSYNTAXMODE m_eMode;
+  FDE_CSSSYNTAXSTATUS m_eStatus;
+  CFX_StackTemplate<FDE_CSSSYNTAXMODE> m_ModeStack;
+};
+
+#endif  // XFA_SRC_FDE_CSS_FDE_CSSSYNTAX_H_