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Fixed a lot of untested bugs with our windows filestream

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This commit is contained in:
Pavel Krajcevski 2013-03-07 02:31:01 -05:00
parent da0d2be695
commit 9a5e0d197d
1 changed files with 45 additions and 6 deletions
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51
IO/src/FileStreamWin32.cpp
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@ -1,9 +1,44 @@
#include "FileStream.h"
#include <Windows.h>
#include <Windows.h>
#include <strsafe.h>
#include <stdio.h>
#include <assert.h>
void ErrorExit(LPTSTR lpszFunction)
{
// Retrieve the system error message for the last-error code
LPVOID lpMsgBuf;
LPVOID lpDisplayBuf;
DWORD dw = GetLastError();
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
dw,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) &lpMsgBuf,
0, NULL );
// Display the error message and exit the process
lpDisplayBuf = (LPVOID)LocalAlloc(LMEM_ZEROINIT,
(lstrlen((LPCTSTR)lpMsgBuf) + lstrlen((LPCTSTR)lpszFunction) + 40) * sizeof(TCHAR));
StringCchPrintf((LPTSTR)lpDisplayBuf,
LocalSize(lpDisplayBuf) / sizeof(TCHAR),
TEXT("%s failed with error %d: %s"),
lpszFunction, dw, lpMsgBuf);
MessageBox(NULL, (LPCTSTR)lpDisplayBuf, TEXT("Error"), MB_OK);
LocalFree(lpMsgBuf);
LocalFree(lpDisplayBuf);
ExitProcess(dw);
}
class FileStreamImpl {
private:
@ -20,8 +55,8 @@ public:
{
DWORD dwDesiredAccess = GENERIC_READ;
DWORD dwShareMode = 0;
switch(mode) {
DWORD dwOpenAction = OPEN_EXISTING;
switch(mode) {
default:
case eFileMode_ReadBinary:
case eFileMode_Read:
@ -31,16 +66,20 @@ public:
case eFileMode_Write:
case eFileMode_WriteBinary:
dwDesiredAccess = GENERIC_WRITE;
dwOpenAction = CREATE_NEW;
break;
case eFileMode_WriteAppend:
case eFileMode_WriteBinaryAppend:
dwDesiredAccess = FILE_APPEND_DATA;
dwDesiredAccess = FILE_APPEND_DATA;
dwOpenAction = CREATE_NEW;
break;
}
m_Handle = CreateFile(filename, dwDesiredAccess, dwShareMode, NULL, 0, FILE_ATTRIBUTE_NORMAL, NULL);
assert(m_Handle != INVALID_HANDLE_VALUE);
m_Handle = CreateFile(filename, dwDesiredAccess, 0, NULL, dwOpenAction, FILE_ATTRIBUTE_NORMAL, NULL);
if(m_Handle == INVALID_HANDLE_VALUE) {
ErrorExit(TEXT("CreateFile"));
}
}
~FileStreamImpl() {