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// Copyright 2017 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_CSS_CFX_CSSSYNTAXPARSER_H_
#define CORE_FXCRT_CSS_CFX_CSSSYNTAXPARSER_H_
#include <stack>
#include "core/fxcrt/css/cfx_cssexttextbuf.h"
#include "core/fxcrt/css/cfx_csstextbuf.h"
#include "core/fxcrt/fx_string.h"
#define CFX_CSSSYNTAXCHECK_AllowCharset 1
#define CFX_CSSSYNTAXCHECK_AllowImport 2
enum class CFX_CSSSyntaxMode {
RuleSet,
Comment,
UnknownRule,
Selector,
PropertyName,
PropertyValue,
};
enum class CFX_CSSSyntaxStatus : uint8_t {
Error,
EOS,
None,
StyleRule,
Selector,
DeclOpen,
DeclClose,
PropertyName,
PropertyValue,
};
class CFX_CSSSyntaxParser {
public:
CFX_CSSSyntaxParser(const wchar_t* pBuffer, int32_t iBufferSize);
CFX_CSSSyntaxParser(const wchar_t* pBuffer,
int32_t iBufferSize,
int32_t iTextDatSize,
bool bOnlyDeclaration);
~CFX_CSSSyntaxParser();
CFX_CSSSyntaxStatus DoSyntaxParse();
WideStringView GetCurrentString() const;
protected:
void SwitchMode(CFX_CSSSyntaxMode eMode);
int32_t SwitchToComment();
bool RestoreMode();
bool AppendChar(wchar_t wch);
int32_t SaveTextData();
bool IsCharsetEnabled() const {
return (m_dwCheck & CFX_CSSSYNTAXCHECK_AllowCharset) != 0;
}
void DisableCharset() { m_dwCheck = CFX_CSSSYNTAXCHECK_AllowImport; }
bool IsImportEnabled() const;
void DisableImport() { m_dwCheck = 0; }
CFX_CSSTextBuf m_TextData;
CFX_CSSExtTextBuf m_TextPlane;
int32_t m_iTextDataLen;
uint32_t m_dwCheck;
CFX_CSSSyntaxMode m_eMode;
CFX_CSSSyntaxStatus m_eStatus;
std::stack<CFX_CSSSyntaxMode> m_ModeStack;
};
#endif // CORE_FXCRT_CSS_CFX_CSSSYNTAXPARSER_H_
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