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1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2014 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 | 6 |
7 #ifndef CORE_SRC_FXCRT_EXTENSION_H_ | 7 #ifndef CORE_SRC_FXCRT_EXTENSION_H_ |
8 #define CORE_SRC_FXCRT_EXTENSION_H_ | 8 #define CORE_SRC_FXCRT_EXTENSION_H_ |
9 | 9 |
10 #include "../../include/fxcrt/fx_basic.h" | 10 #include "../../include/fxcrt/fx_basic.h" |
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55 virtual IFX_FileStream* CreateFileStream(FX_DWORD dwModes) { | 55 virtual IFX_FileStream* CreateFileStream(FX_DWORD dwModes) { |
56 return FX_CreateFileStream(m_path, dwModes); | 56 return FX_CreateFileStream(m_path, dwModes); |
57 } | 57 } |
58 | 58 |
59 protected: | 59 protected: |
60 CFX_WideString m_path; | 60 CFX_WideString m_path; |
61 FX_DWORD m_RefCount; | 61 FX_DWORD m_RefCount; |
62 }; | 62 }; |
63 class CFX_CRTFileStream final : public IFX_FileStream { | 63 class CFX_CRTFileStream final : public IFX_FileStream { |
64 public: | 64 public: |
65 CFX_CRTFileStream(IFXCRT_FileAccess* pFA) | 65 CFX_CRTFileStream(IFXCRT_FileAccess* pFA) : m_pFile(pFA), m_dwCount(1) {} |
66 : m_pFile(pFA), | |
67 m_dwCount(1) { | |
68 } | |
69 ~CFX_CRTFileStream() { | 66 ~CFX_CRTFileStream() { |
70 if (m_pFile) { | 67 if (m_pFile) { |
71 m_pFile->Release(); | 68 m_pFile->Release(); |
72 } | 69 } |
73 } | 70 } |
74 virtual IFX_FileStream* Retain() override { | 71 virtual IFX_FileStream* Retain() override { |
75 m_dwCount++; | 72 m_dwCount++; |
76 return this; | 73 return this; |
77 } | 74 } |
78 virtual void Release() override { | 75 virtual void Release() override { |
79 FX_DWORD nCount = --m_dwCount; | 76 FX_DWORD nCount = --m_dwCount; |
80 if (!nCount) { | 77 if (!nCount) { |
81 delete this; | 78 delete this; |
82 } | 79 } |
83 } | 80 } |
84 virtual FX_FILESIZE GetSize() override { | 81 virtual FX_FILESIZE GetSize() override { return m_pFile->GetSize(); } |
85 return m_pFile->GetSize(); | |
86 } | |
87 virtual FX_BOOL IsEOF() override { return GetPosition() >= GetSize(); } | 82 virtual FX_BOOL IsEOF() override { return GetPosition() >= GetSize(); } |
88 virtual FX_FILESIZE GetPosition() override { | 83 virtual FX_FILESIZE GetPosition() override { return m_pFile->GetPosition(); } |
89 return m_pFile->GetPosition(); | |
90 } | |
91 virtual FX_BOOL ReadBlock(void* buffer, | 84 virtual FX_BOOL ReadBlock(void* buffer, |
92 FX_FILESIZE offset, | 85 FX_FILESIZE offset, |
93 size_t size) override { | 86 size_t size) override { |
94 return (FX_BOOL)m_pFile->ReadPos(buffer, size, offset); | 87 return (FX_BOOL)m_pFile->ReadPos(buffer, size, offset); |
95 } | 88 } |
96 virtual size_t ReadBlock(void* buffer, size_t size) override { | 89 virtual size_t ReadBlock(void* buffer, size_t size) override { |
97 return m_pFile->Read(buffer, size); | 90 return m_pFile->Read(buffer, size); |
98 } | 91 } |
99 virtual FX_BOOL WriteBlock(const void* buffer, | 92 virtual FX_BOOL WriteBlock(const void* buffer, |
100 FX_FILESIZE offset, | 93 FX_FILESIZE offset, |
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143 m_dwCount++; | 136 m_dwCount++; |
144 return this; | 137 return this; |
145 } | 138 } |
146 virtual void Release() override { | 139 virtual void Release() override { |
147 FX_DWORD nCount = --m_dwCount; | 140 FX_DWORD nCount = --m_dwCount; |
148 if (nCount) { | 141 if (nCount) { |
149 return; | 142 return; |
150 } | 143 } |
151 delete this; | 144 delete this; |
152 } | 145 } |
153 virtual FX_FILESIZE GetSize() override { | 146 virtual FX_FILESIZE GetSize() override { return (FX_FILESIZE)m_nCurSize; } |
154 return (FX_FILESIZE)m_nCurSize; | |
155 } | |
156 virtual FX_BOOL IsEOF() override { return m_nCurPos >= (size_t)GetSize(); } | 147 virtual FX_BOOL IsEOF() override { return m_nCurPos >= (size_t)GetSize(); } |
157 virtual FX_FILESIZE GetPosition() override { | 148 virtual FX_FILESIZE GetPosition() override { return (FX_FILESIZE)m_nCurPos; } |
158 return (FX_FILESIZE)m_nCurPos; | |
159 } | |
160 virtual FX_BOOL ReadBlock(void* buffer, | 149 virtual FX_BOOL ReadBlock(void* buffer, |
161 FX_FILESIZE offset, | 150 FX_FILESIZE offset, |
162 size_t size) override { | 151 size_t size) override { |
163 if (!buffer || !size) { | 152 if (!buffer || !size) { |
164 return FALSE; | 153 return FALSE; |
165 } | 154 } |
166 | 155 |
167 FX_SAFE_SIZE_T newPos = size; | 156 FX_SAFE_SIZE_T newPos = size; |
168 newPos += offset; | 157 newPos += offset; |
169 if (!newPos.IsValid() || newPos.ValueOrDefault(0) == 0 || | 158 if (!newPos.IsValid() || newPos.ValueOrDefault(0) == 0 || |
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347 } FX_MTRANDOMCONTEXT, *FX_LPMTRANDOMCONTEXT; | 336 } FX_MTRANDOMCONTEXT, *FX_LPMTRANDOMCONTEXT; |
348 typedef FX_MTRANDOMCONTEXT const* FX_LPCMTRANDOMCONTEXT; | 337 typedef FX_MTRANDOMCONTEXT const* FX_LPCMTRANDOMCONTEXT; |
349 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ | 338 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ |
350 FX_BOOL FX_GenerateCryptoRandom(FX_DWORD* pBuffer, int32_t iCount); | 339 FX_BOOL FX_GenerateCryptoRandom(FX_DWORD* pBuffer, int32_t iCount); |
351 #endif | 340 #endif |
352 #ifdef __cplusplus | 341 #ifdef __cplusplus |
353 } | 342 } |
354 #endif | 343 #endif |
355 | 344 |
356 #endif // CORE_SRC_FXCRT_EXTENSION_H_ | 345 #endif // CORE_SRC_FXCRT_EXTENSION_H_ |
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