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
|
// Copyright 2016 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
#include "core/fpdfapi/fpdf_parser/include/cpdf_stream.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_stream_acc.h"
#include "core/fpdfapi/fpdf_parser/include/fpdf_parser_decode.h"
CPDF_Stream::CPDF_Stream(uint8_t* pData, uint32_t size, CPDF_Dictionary* pDict)
: m_pDict(pDict),
m_dwSize(size),
m_GenNum(kMemoryBasedGenNum),
m_pDataBuf(pData) {}
CPDF_Stream::~CPDF_Stream() {
if (IsMemoryBased())
FX_Free(m_pDataBuf);
if (m_pDict)
m_pDict->Release();
}
CPDF_Object::Type CPDF_Stream::GetType() const {
return STREAM;
}
CPDF_Dictionary* CPDF_Stream::GetDict() const {
return m_pDict;
}
bool CPDF_Stream::IsStream() const {
return true;
}
CPDF_Stream* CPDF_Stream::AsStream() {
return this;
}
const CPDF_Stream* CPDF_Stream::AsStream() const {
return this;
}
void CPDF_Stream::InitStreamInternal(CPDF_Dictionary* pDict) {
if (pDict) {
if (m_pDict)
m_pDict->Release();
m_pDict = pDict;
}
if (IsMemoryBased())
FX_Free(m_pDataBuf);
m_GenNum = 0;
m_pFile = nullptr;
}
void CPDF_Stream::InitStream(const uint8_t* pData,
uint32_t size,
CPDF_Dictionary* pDict) {
InitStreamInternal(pDict);
m_GenNum = kMemoryBasedGenNum;
m_pDataBuf = FX_Alloc(uint8_t, size);
if (pData)
FXSYS_memcpy(m_pDataBuf, pData, size);
m_dwSize = size;
if (m_pDict)
m_pDict->SetAtInteger("Length", size);
}
CPDF_Object* CPDF_Stream::Clone(FX_BOOL bDirect) const {
CPDF_StreamAcc acc;
acc.LoadAllData(this, TRUE);
uint32_t streamSize = acc.GetSize();
CPDF_Dictionary* pDict = GetDict();
if (pDict)
pDict = ToDictionary(pDict->Clone(bDirect));
return new CPDF_Stream(acc.DetachData(), streamSize, pDict);
}
void CPDF_Stream::SetData(const uint8_t* pData,
uint32_t size,
FX_BOOL bCompressed,
FX_BOOL bKeepBuf) {
if (IsMemoryBased())
FX_Free(m_pDataBuf);
m_GenNum = kMemoryBasedGenNum;
if (bKeepBuf) {
m_pDataBuf = const_cast<uint8_t*>(pData);
} else {
m_pDataBuf = FX_Alloc(uint8_t, size);
if (pData) {
FXSYS_memcpy(m_pDataBuf, pData, size);
}
}
m_dwSize = size;
if (!m_pDict)
m_pDict = new CPDF_Dictionary;
m_pDict->SetAtInteger("Length", size);
if (!bCompressed) {
m_pDict->RemoveAt("Filter");
m_pDict->RemoveAt("DecodeParms");
}
}
FX_BOOL CPDF_Stream::ReadRawData(FX_FILESIZE offset,
uint8_t* buf,
uint32_t size) const {
if (!IsMemoryBased() && m_pFile)
return m_pFile->ReadBlock(buf, offset, size);
if (m_pDataBuf)
FXSYS_memcpy(buf, m_pDataBuf + offset, size);
return TRUE;
}
void CPDF_Stream::InitStreamFromFile(IFX_FileRead* pFile,
CPDF_Dictionary* pDict) {
InitStreamInternal(pDict);
m_pFile = pFile;
m_dwSize = (uint32_t)pFile->GetSize();
if (m_pDict)
m_pDict->SetAtInteger("Length", m_dwSize);
}
CFX_WideString CPDF_Stream::GetUnicodeText() const {
CPDF_StreamAcc stream;
stream.LoadAllData(this, FALSE);
return PDF_DecodeText(stream.GetData(), stream.GetSize());
}
|
