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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
/****************************************************************************
**
** Copyright (C) 1993-2009 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
//==============================================================================
// Includes
//==============================================================================
#include "SystemPrefix.h"
#include "Qt3DSFile.h"
#include "Qt3DSFileStream.h"
#include "foundation/Qt3DSLogging.h"
#include <QtCore/qthread.h>
//==============================================================================
// Namespace
//==============================================================================
namespace Q3DStudio {
//==============================================================================
/**
* Constructor
* @param inFilename the file to open
* @param inMode the file mode to use
*/
CFileStream::CFileStream(const CHAR *inFilePath, const CHAR *inMode, BOOL inKeepTrying)
: m_FileStream(NULL)
, m_Endian(QT3DS_LITTLE_ENDIAN)
, m_KeepTrying(inKeepTrying)
{
m_TempBuffer.Reserve(sizeof(MATRIX16)); // Preallocated some space
if (inFilePath)
Open(inFilePath, inMode);
}
//==============================================================================
/**
* Destructor
*/
CFileStream::~CFileStream()
{
Close();
}
//==============================================================================
/**
* Open file.
* @param inFilename the file to open
* @param inMode the file mode ( read/write ) to use
*/
void CFileStream::Open(const CHAR *inFilePath, const CHAR *inMode)
{
Close();
m_FileStream = CFile::Open()(inFilePath, inMode);
while (m_KeepTrying && !m_FileStream) {
QThread::msleep(10);
m_FileStream = CFile::Open()(inFilePath, inMode);
}
if (m_FileStream)
m_FilePath = inFilePath;
}
//==============================================================================
/**
* Close file.
*/
void CFileStream::Close()
{
if (m_FileStream) {
CFile::Close()(m_FileStream);
m_FileStream = NULL;
}
}
//==============================================================================
/**
* Check if there is an opened file.
* @return TRUE if opened, FALSE otherwise.
*/
BOOL CFileStream::IsOpen() const
{
return m_FileStream != NULL;
}
//==============================================================================
/**
* Access the source path of a file stream.
* @return an empty string if the stream is not open
*/
const CHAR *CFileStream::GetFilePath() const
{
return m_FilePath.toLatin1().constData();
}
//==============================================================================
/**
* Read from stream into memory.
* @param outMemory the destination of the read
* @param inByteCount the amount to read
* @return the number of bytes actually read
*/
INT32 CFileStream::ReadRawCopy(void *inDestination, const UINT32 inByteCount)
{
INT32 lastRead = 0;
INT32 totalRead = 0;
do {
if (totalRead) {
qCWarning(qt3ds::INVALID_OPERATION)
<< "Failed to read expected amount, retrying, expected "
<< inByteCount << " bytes, got "<< totalRead <<" bytes";
}
lastRead = static_cast<INT32>(CFile::Read()(((char *)inDestination) + totalRead, 1,
inByteCount - totalRead, m_FileStream));
totalRead += lastRead;
} while (lastRead && totalRead < (INT32)inByteCount);
if (totalRead != (INT32)inByteCount) {
qCWarning(qt3ds::INVALID_OPERATION)
<< "Failed to read expected amount, retrying, expected "
<< inByteCount << " bytes, got "<< totalRead <<" bytes";
// Zero out remaining destination buffer.
// This can, in some cases, avoid a crash and allow the system to survive a partial
// read.
INT32 amountLeft = inByteCount - totalRead;
memset(((char *)inDestination) + totalRead, 0, amountLeft);
}
return totalRead;
}
//==============================================================================
/**
* Reads data into internal buffer and return the data pointer for it.
* @param outMemory pointer to internal data buffer
* @param inByteCount the amount to read
* @return the number of bytes actually read
*/
INT32 CFileStream::ReadRaw(const void *&inPtr, const UINT32 inByteCount)
{
m_TempBuffer.Reserve(static_cast<INT32>(inByteCount));
INT32 theReadSize = ReadRawCopy(m_TempBuffer.Begin(), inByteCount);
if (theReadSize != (INT32)inByteCount) {
qCWarning(qt3ds::INVALID_OPERATION)
<< "Failed to read expected amount, retrying, expected "<< inByteCount
<< " bytes, got "<< theReadSize <<" bytes";
}
inPtr = m_TempBuffer.Begin();
return theReadSize;
}
//==============================================================================
/**
* Write from memory to stream.
* @param inMemory the buffer to write from
* @param inByteCount the amount to write
* @return the number of bytes actually written
*/
INT32 CFileStream::WriteRaw(const void *inSource, const UINT32 inByteCount)
{
return static_cast<INT32>(CFile::Write()(inSource, 1, inByteCount, m_FileStream));
}
//==============================================================================
/**
* Offsets the file position by the specified number of bytes
*/
void CFileStream::Offset(const INT32 inByteCount)
{
CFile::Seek()(m_FileStream, inByteCount, CFile::E_SEEK_CUR);
}
//==============================================================================
/**
* Returns the current position of the file stream
*/
IStream::TStreamPosition CFileStream::Current()
{
return static_cast<INT32>(CFile::Tell()(m_FileStream));
}
//==============================================================================
/**
* Sets the stream to the specified position within the file
*/
void CFileStream::Set(const TStreamPosition &inPosition)
{
CFile::Seek()(m_FileStream, inPosition, CFile::E_SEEK_SET);
}
//==============================================================================
/**
* Set the endianess of the file.
* @warning endian support not implemented
*/
void CFileStream::SetEndian(const BOOL inEndian)
{
m_Endian = inEndian;
}
//==============================================================================
/**
* Get the endianess of the file.
* @warning endian support not implemented
*/
BOOL CFileStream::GetEndian()
{
return m_Endian;
}
} // namespace Q3DStudio
|
