diff options
Diffstat (limited to 'xfa/src/fdp/src/css/fde_csssyntax.h')
| -rw-r--r-- | xfa/src/fdp/src/css/fde_csssyntax.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/xfa/src/fdp/src/css/fde_csssyntax.h b/xfa/src/fdp/src/css/fde_csssyntax.h new file mode 100644 index 0000000000..c18e0f9717 --- /dev/null +++ b/xfa/src/fdp/src/css/fde_csssyntax.h @@ -0,0 +1,135 @@ +// 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 _FDE_CSSSYNTAX
+#define _FDE_CSSSYNTAX
+class CFDE_CSSTextBuf : public CFX_Target
+{
+public:
+ CFDE_CSSTextBuf();
+ ~CFDE_CSSTextBuf();
+ FX_BOOL AttachBuffer(FX_LPCWSTR pBuffer, FX_INT32 iBufLen);
+ FX_BOOL EstimateSize(FX_INT32 iAllocSize);
+ FX_INT32 LoadFromStream(IFX_Stream *pTxtStream, FX_INT32 iStreamOffset, FX_INT32 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();
+ FX_INT32 TrimEnd()
+ {
+ while (m_iDatLen > 0 && m_pBuffer[m_iDatLen - 1] <= ' ') {
+ --m_iDatLen;
+ }
+ AppendChar(0);
+ return --m_iDatLen;
+ }
+ void Subtract(FX_INT32 iStart, FX_INT32 iLength);
+ FX_BOOL IsEOF() const
+ {
+ return m_iDatPos >= m_iDatLen;
+ }
+ FX_WCHAR GetAt(FX_INT32 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++;
+ }
+ FX_INT32 GetLength() const
+ {
+ return m_iDatLen;
+ }
+ FX_LPCWSTR GetBuffer() const
+ {
+ return m_pBuffer;
+ }
+protected:
+ FX_BOOL ExpandBuf(FX_INT32 iDesiredSize);
+ FX_BOOL m_bExtBuf;
+ FX_LPWSTR m_pBuffer;
+ FX_INT32 m_iBufLen;
+ FX_INT32 m_iDatLen;
+ FX_INT32 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()
+ {
+ FDE_Delete this;
+ }
+ virtual FX_BOOL Init(IFX_Stream *pStream, FX_INT32 iCSSPlaneSize, FX_INT32 iTextDataSize = 32, FX_BOOL bOnlyDeclaration = FALSE);
+ virtual FX_BOOL Init(FX_LPCWSTR pBuffer, FX_INT32 iBufferSize, FX_INT32 iTextDatSize = 32, FX_BOOL bOnlyDeclaration = FALSE);
+ virtual FDE_CSSSYNTAXSTATUS DoSyntaxParse();
+ virtual FX_LPCWSTR GetCurrentString(FX_INT32 &iLength) const;
+protected:
+ void Reset(FX_BOOL bOnlyDeclaration);
+ void SwitchMode(FDE_CSSSYNTAXMODE eMode);
+ FX_INT32 SwitchToComment();
+
+ FX_BOOL RestoreMode();
+ FX_BOOL AppendChar(FX_WCHAR wch);
+ FX_INT32 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;
+ FX_INT32 m_iStreamPos;
+ FX_INT32 m_iPlaneSize;
+ CFDE_CSSTextBuf m_TextData;
+ CFDE_CSSTextBuf m_TextPlane;
+ FX_INT32 m_iTextDatLen;
+ FX_DWORD m_dwCheck;
+ FDE_CSSSYNTAXMODE m_eMode;
+ FDE_CSSSYNTAXSTATUS m_eStatus;
+ CFX_StackTemplate<FDE_CSSSYNTAXMODE> m_ModeStack;
+};
+#endif
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