初步修复

Common/EtFileSystem/EtStdFileIO.cpp

@@ -0,0 +1,101 @@
+#include "stdafx.h"
+#include "EtStdFileIO.h"
+
+#ifdef _DEBUG
+#define new new(_NORMAL_BLOCK,__FILE__,__LINE__)
+#endif
+
+//-------------------------------------------------------------------------
+CEtStdFileIO::CEtStdFileIO()
+{
+	m_hFile = NULL;
+}
+
+CEtStdFileIO::~CEtStdFileIO()
+{
+	Close();
+}
+
+
+bool
+CEtStdFileIO::Open(const TCHAR* szFileName, AccessType nAccessMode)
+{
+	Close();
+	switch( nAccessMode ) 
+	{
+	case ET_READ:
+		{
+			m_hFile = CreateFile(szFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING,
+								 FILE_ATTRIBUTE_NORMAL,NULL );
+		}
+		break;
+	case ET_WRITE:
+		{
+			m_hFile = CreateFile(szFileName, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
+								 FILE_ATTRIBUTE_NORMAL,NULL );
+		}
+		break;
+	case ET_ALL:
+		{
+			m_hFile = CreateFile(szFileName, GENERIC_READ|GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
+								 FILE_ATTRIBUTE_NORMAL,NULL );
+		}
+		break;
+	
+	}
+
+	if ( m_hFile == INVALID_HANDLE_VALUE )
+	{
+		return false;
+	}
+
+	return true;
+}
+
+bool	
+CEtStdFileIO::Close()
+{
+	if ( CloseHandle(m_hFile) == TRUE )
+		return true;
+
+	return false;
+}
+
+int		
+CEtStdFileIO::Read(void* pBuffer, int nLen)
+{
+	DWORD nReadSize = 0;
+	ReadFile(m_hFile, pBuffer, nLen, &nReadSize, NULL );
+	return nReadSize;
+}
+
+int
+CEtStdFileIO::Write(const void* pBuffer, int nLen )
+{
+	DWORD nWriteSize = 0;
+	WriteFile(m_hFile, pBuffer, nLen, &nWriteSize, 0);
+	return nWriteSize;
+}
+
+int
+CEtStdFileIO::Seek(int nOffset, SeekType nPosition)
+{
+	LARGE_INTEGER li;
+
+	li.QuadPart = nOffset;
+	li.LowPart = SetFilePointer(m_hFile, li.LowPart, &li.HighPart, nPosition);
+	
+	if (li.LowPart == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR)
+	{
+		li.QuadPart = -1;
+	}
+
+	return (int)li.QuadPart;
+}
+
+
+int
+CEtStdFileIO::Tell()
+{
+	return Seek(0, ET_SEEK_CURRENT);
+}