CPGFFileStream - Man Page

CPGFFileStream ()
CPGFFileStream (HANDLE hFile)
HANDLE GetHandle ()
virtual ~CPGFFileStream ()
virtual void Write (int *count, void *buffer)
virtual void Read (int *count, void *buffer)
virtual void SetPos (short posMode, INT64 posOff)
virtual UINT64 GetPos () const
virtual bool IsValid () const

HANDLE m_hFile
file handle

Definition at line 87 of file PGFstream.h..PP

87 : m_hFile(0) {}

Constructor

Parameters

hFile File handle

Definition at line 90 of file PGFstream.h..PP

90 : m_hFile(hFile) {}

Definition at line 94 of file PGFstream.h..PP

94 { m_hFile = 0; }

Returns

File handle

Definition at line 92 of file PGFstream.h..PP

92 { return m_hFile; }

Get current stream position.

Returns

Current stream position

Implements CPGFStream.

Definition at line 64 of file PGFstream.cpp..PP

64                                     {
65         ASSERT(IsValid());
66         OSError err;
67         UINT64 pos = 0;
68         if ((err = GetFPos(m_hFile, &pos)) != NoError) ReturnWithError2(err, pos);
69         return pos;
70 }

Check stream validity.

Returns

True if stream and current position is valid

Implements CPGFStream.

Definition at line 99 of file PGFstream.h..PP

99 { return m_hFile != 0; }

Read some bytes from this stream and stores them into a buffer.

Parameters

count A pointer to a value containing the number of bytes should be read. After this call it contains the number of read bytes.
buffer A memory buffer

Implements CPGFStream.

Definition at line 48 of file PGFstream.cpp..PP

48                                                    {
49         ASSERT(count);
50         ASSERT(buffPtr);
51         ASSERT(IsValid());
52         OSError err;
53         if ((err = FileRead(m_hFile, count, buffPtr)) != NoError) ReturnWithError(err);
54 }

Set stream position either absolute or relative.

Parameters

posMode A position mode (FSFromStart, FSFromCurrent, FSFromEnd)
posOff A new stream position (absolute positioning) or a position offset (relative positioning)

Implements CPGFStream.

Definition at line 57 of file PGFstream.cpp..PP

57                                                        {
58         ASSERT(IsValid());
59         OSError err;
60         if ((err = SetFPos(m_hFile, posMode, posOff)) != NoError) ReturnWithError(err);
61 }

Write some bytes out of a buffer into this stream.

Parameters

count A pointer to a value containing the number of bytes should be written. After this call it contains the number of written bytes.
buffer A memory buffer

Implements CPGFStream.

Definition at line 38 of file PGFstream.cpp..PP

38                                                     {
39         ASSERT(count);
40         ASSERT(buffPtr);
41         ASSERT(IsValid());
42         OSError err;
43         if ((err = FileWrite(m_hFile, count, buffPtr)) != NoError) ReturnWithError(err);
44         
45 }

file handle

Definition at line 84 of file PGFstream.h.