1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
// 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 CORE_FXCRT_EXTENSION_H_
#define CORE_FXCRT_EXTENSION_H_
#include <algorithm>
#include <memory>
#include "core/fxcrt/fx_basic.h"
#include "core/fxcrt/fx_safe_types.h"
class IFXCRT_FileAccess {
public:
static IFXCRT_FileAccess* Create();
virtual ~IFXCRT_FileAccess() {}
virtual bool Open(const CFX_ByteStringC& fileName, uint32_t dwMode) = 0;
virtual bool Open(const CFX_WideStringC& fileName, uint32_t dwMode) = 0;
virtual void Close() = 0;
virtual FX_FILESIZE GetSize() const = 0;
virtual FX_FILESIZE GetPosition() const = 0;
virtual FX_FILESIZE SetPosition(FX_FILESIZE pos) = 0;
virtual size_t Read(void* pBuffer, size_t szBuffer) = 0;
virtual size_t Write(const void* pBuffer, size_t szBuffer) = 0;
virtual size_t ReadPos(void* pBuffer, size_t szBuffer, FX_FILESIZE pos) = 0;
virtual size_t WritePos(const void* pBuffer,
size_t szBuffer,
FX_FILESIZE pos) = 0;
virtual bool Flush() = 0;
virtual bool Truncate(FX_FILESIZE szFile) = 0;
};
#ifdef PDF_ENABLE_XFA
class CFX_CRTFileAccess : public IFX_FileAccess {
public:
CFX_CRTFileAccess();
~CFX_CRTFileAccess() override;
// IFX_FileAccess
void Release() override;
IFX_FileAccess* Retain() override;
void GetPath(CFX_WideString& wsPath) override;
IFX_SeekableStream* CreateFileStream(uint32_t dwModes) override;
FX_BOOL Init(const CFX_WideStringC& wsPath);
protected:
CFX_WideString m_path;
uint32_t m_RefCount;
};
#endif // PDF_ENABLE_XFA
class CFX_CRTFileStream final : public IFX_SeekableStream {
public:
explicit CFX_CRTFileStream(std::unique_ptr<IFXCRT_FileAccess> pFA);
~CFX_CRTFileStream() override;
// IFX_SeekableStream:
IFX_SeekableStream* Retain() override;
void Release() override;
FX_FILESIZE GetSize() override;
bool IsEOF() override;
FX_FILESIZE GetPosition() override;
bool ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override;
size_t ReadBlock(void* buffer, size_t size) override;
bool WriteBlock(const void* buffer, FX_FILESIZE offset, size_t size) override;
bool Flush() override;
protected:
std::unique_ptr<IFXCRT_FileAccess> m_pFile;
uint32_t m_dwCount;
};
#define FX_MEMSTREAM_BlockSize (64 * 1024)
#define FX_MEMSTREAM_Consecutive 0x01
#define FX_MEMSTREAM_TakeOver 0x02
class CFX_MemoryStream final : public IFX_MemoryStream {
public:
explicit CFX_MemoryStream(FX_BOOL bConsecutive);
CFX_MemoryStream(uint8_t* pBuffer, size_t nSize, FX_BOOL bTakeOver);
~CFX_MemoryStream() override;
// IFX_MemoryStream
IFX_SeekableStream* Retain() override;
void Release() override;
FX_FILESIZE GetSize() override;
bool IsEOF() override;
FX_FILESIZE GetPosition() override;
bool ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override;
size_t ReadBlock(void* buffer, size_t size) override;
bool WriteBlock(const void* buffer, FX_FILESIZE offset, size_t size) override;
bool Flush() override;
bool IsConsecutive() const override;
void EstimateSize(size_t nInitSize, size_t nGrowSize) override;
uint8_t* GetBuffer() const override;
void AttachBuffer(uint8_t* pBuffer,
size_t nSize,
bool bTakeOver = FALSE) override;
void DetachBuffer() override;
protected:
CFX_ArrayTemplate<uint8_t*> m_Blocks;
uint32_t m_dwCount;
size_t m_nTotalSize;
size_t m_nCurSize;
size_t m_nCurPos;
size_t m_nGrowSize;
uint32_t m_dwFlags;
FX_BOOL ExpandBlocks(size_t size);
};
#ifdef __cplusplus
extern "C" {
#endif
#define MT_N 848
#define MT_M 456
#define MT_Matrix_A 0x9908b0df
#define MT_Upper_Mask 0x80000000
#define MT_Lower_Mask 0x7fffffff
struct FX_MTRANDOMCONTEXT {
FX_MTRANDOMCONTEXT() {
mti = MT_N + 1;
bHaveSeed = FALSE;
}
uint32_t mti;
FX_BOOL bHaveSeed;
uint32_t mt[MT_N];
};
#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
FX_BOOL FX_GenerateCryptoRandom(uint32_t* pBuffer, int32_t iCount);
#endif
#ifdef __cplusplus
}
#endif
#endif // CORE_FXCRT_EXTENSION_H_
|
