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Side by Side Diff: xfa/src/fde/css/fde_csssyntax.h

Issue 1803723002: Move xfa/src up to xfa/. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: Rebase to master Created 4 years, 9 months ago
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1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #ifndef XFA_SRC_FDE_CSS_FDE_CSSSYNTAX_H_
8 #define XFA_SRC_FDE_CSS_FDE_CSSSYNTAX_H_
9
10 #include "xfa/src/fde/css/fde_css.h"
11 #include "xfa/src/fgas/crt/fgas_memory.h"
12 #include "xfa/src/fgas/crt/fgas_stream.h"
13
14 class CFDE_CSSTextBuf : public CFX_Target {
15 public:
16 CFDE_CSSTextBuf();
17 ~CFDE_CSSTextBuf();
18 FX_BOOL AttachBuffer(const FX_WCHAR* pBuffer, int32_t iBufLen);
19 FX_BOOL EstimateSize(int32_t iAllocSize);
20 int32_t LoadFromStream(IFX_Stream* pTxtStream,
21 int32_t iStreamOffset,
22 int32_t iMaxChars,
23 FX_BOOL& bEOS);
24 FX_BOOL AppendChar(FX_WCHAR wch) {
25 if (m_iDatLen >= m_iBufLen && !ExpandBuf(m_iBufLen * 2)) {
26 return FALSE;
27 }
28 return (m_pBuffer[m_iDatLen++] = wch), TRUE;
29 }
30 void Clear() { m_iDatPos = m_iDatLen = 0; }
31 void Reset();
32 int32_t TrimEnd() {
33 while (m_iDatLen > 0 && m_pBuffer[m_iDatLen - 1] <= ' ') {
34 --m_iDatLen;
35 }
36 AppendChar(0);
37 return --m_iDatLen;
38 }
39 void Subtract(int32_t iStart, int32_t iLength);
40 FX_BOOL IsEOF() const { return m_iDatPos >= m_iDatLen; }
41 FX_WCHAR GetAt(int32_t index) const { return m_pBuffer[index]; }
42 FX_WCHAR GetChar() const { return m_pBuffer[m_iDatPos]; }
43 FX_WCHAR GetNextChar() const {
44 return (m_iDatPos + 1 >= m_iDatLen) ? 0 : m_pBuffer[m_iDatPos + 1];
45 }
46 void MoveNext() { m_iDatPos++; }
47 int32_t GetLength() const { return m_iDatLen; }
48 const FX_WCHAR* GetBuffer() const { return m_pBuffer; }
49
50 protected:
51 FX_BOOL ExpandBuf(int32_t iDesiredSize);
52 FX_BOOL m_bExtBuf;
53 FX_WCHAR* m_pBuffer;
54 int32_t m_iBufLen;
55 int32_t m_iDatLen;
56 int32_t m_iDatPos;
57 };
58
59 #define FDE_CSSSYNTAXCHECK_AllowCharset 1
60 #define FDE_CSSSYNTAXCHECK_AllowImport 2
61
62 enum FDE_CSSSYNTAXMODE {
63 FDE_CSSSYNTAXMODE_RuleSet,
64 FDE_CSSSYNTAXMODE_Comment,
65 FDE_CSSSYNTAXMODE_AtRule,
66 FDE_CSSSYNTAXMODE_UnknownRule,
67 FDE_CSSSYNTAXMODE_Charset,
68 FDE_CSSSYNTAXMODE_Import,
69 FDE_CSSSYNTAXMODE_MediaRule,
70 FDE_CSSSYNTAXMODE_URI,
71 FDE_CSSSYNTAXMODE_MediaType,
72 FDE_CSSSYNTAXMODE_Selector,
73 FDE_CSSSYNTAXMODE_PropertyName,
74 FDE_CSSSYNTAXMODE_PropertyValue,
75 };
76
77 class CFDE_CSSSyntaxParser : public IFDE_CSSSyntaxParser, public CFX_Target {
78 public:
79 CFDE_CSSSyntaxParser();
80 ~CFDE_CSSSyntaxParser();
81 virtual void Release() { delete this; }
82 virtual FX_BOOL Init(IFX_Stream* pStream,
83 int32_t iCSSPlaneSize,
84 int32_t iTextDataSize = 32,
85 FX_BOOL bOnlyDeclaration = FALSE);
86 virtual FX_BOOL Init(const FX_WCHAR* pBuffer,
87 int32_t iBufferSize,
88 int32_t iTextDatSize = 32,
89 FX_BOOL bOnlyDeclaration = FALSE);
90 virtual FDE_CSSSYNTAXSTATUS DoSyntaxParse();
91 virtual const FX_WCHAR* GetCurrentString(int32_t& iLength) const;
92
93 protected:
94 void Reset(FX_BOOL bOnlyDeclaration);
95 void SwitchMode(FDE_CSSSYNTAXMODE eMode);
96 int32_t SwitchToComment();
97
98 FX_BOOL RestoreMode();
99 FX_BOOL AppendChar(FX_WCHAR wch);
100 int32_t SaveTextData();
101 FX_BOOL IsCharsetEnabled() const {
102 return (m_dwCheck & FDE_CSSSYNTAXCHECK_AllowCharset) != 0;
103 }
104 void DisableCharset() { m_dwCheck = FDE_CSSSYNTAXCHECK_AllowImport; }
105 FX_BOOL IsImportEnabled() const;
106 void DisableImport() { m_dwCheck = 0; }
107 IFX_Stream* m_pStream;
108 int32_t m_iStreamPos;
109 int32_t m_iPlaneSize;
110 CFDE_CSSTextBuf m_TextData;
111 CFDE_CSSTextBuf m_TextPlane;
112 int32_t m_iTextDatLen;
113 FX_DWORD m_dwCheck;
114 FDE_CSSSYNTAXMODE m_eMode;
115 FDE_CSSSYNTAXSTATUS m_eStatus;
116 CFX_StackTemplate<FDE_CSSSYNTAXMODE> m_ModeStack;
117 };
118
119 #endif // XFA_SRC_FDE_CSS_FDE_CSSSYNTAX_H_
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