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// Windows/FileSystem.cpp
#include "StdAfx.h"
#include "FileSystem.h"
#include "Defs.h"
#ifndef _UNICODE
extern bool g_IsNT;
#endif
namespace NWindows {
namespace NFile {
namespace NSystem {
bool MyGetVolumeInformation(
LPCTSTR rootPathName,
CSysString &volumeName,
LPDWORD volumeSerialNumber,
LPDWORD maximumComponentLength,
LPDWORD fileSystemFlags,
CSysString &fileSystemName)
{
bool result = BOOLToBool(GetVolumeInformation(
rootPathName,
volumeName.GetBuffer(MAX_PATH), MAX_PATH,
volumeSerialNumber,
maximumComponentLength,
fileSystemFlags,
fileSystemName.GetBuffer(MAX_PATH), MAX_PATH));
volumeName.ReleaseBuffer();
fileSystemName.ReleaseBuffer();
return result;
}
#ifndef _UNICODE
bool MyGetVolumeInformation(
LPCWSTR rootPathName,
UString &volumeName,
LPDWORD volumeSerialNumber,
LPDWORD maximumComponentLength,
LPDWORD fileSystemFlags,
UString &fileSystemName)
{
if (g_IsNT)
{
bool result = BOOLToBool(GetVolumeInformationW(
rootPathName,
volumeName.GetBuffer(MAX_PATH), MAX_PATH,
volumeSerialNumber,
maximumComponentLength,
fileSystemFlags,
fileSystemName.GetBuffer(MAX_PATH), MAX_PATH));
volumeName.ReleaseBuffer();
fileSystemName.ReleaseBuffer();
return result;
}
AString volumeNameA, fileSystemNameA;
bool result = MyGetVolumeInformation(GetSystemString(rootPathName), volumeNameA,
volumeSerialNumber, maximumComponentLength, fileSystemFlags,fileSystemNameA);
if (result)
{
volumeName = GetUnicodeString(volumeNameA);
fileSystemName = GetUnicodeString(fileSystemNameA);
}
return result;
}
#endif
typedef BOOL (WINAPI * GetDiskFreeSpaceExPointer)(
LPCTSTR lpDirectoryName, // directory name
PULARGE_INTEGER lpFreeBytesAvailable, // bytes available to caller
PULARGE_INTEGER lpTotalNumberOfBytes, // bytes on disk
PULARGE_INTEGER lpTotalNumberOfFreeBytes // free bytes on disk
);
bool MyGetDiskFreeSpace(LPCTSTR rootPathName,
UInt64 &clusterSize, UInt64 &totalSize, UInt64 &freeSize)
{
GetDiskFreeSpaceExPointer pGetDiskFreeSpaceEx =
(GetDiskFreeSpaceExPointer)GetProcAddress(
GetModuleHandle(TEXT("kernel32.dll")), "GetDiskFreeSpaceExA");
bool sizeIsDetected = false;
if (pGetDiskFreeSpaceEx)
{
ULARGE_INTEGER i64FreeBytesToCaller, totalSize2, freeSize2;
sizeIsDetected = BOOLToBool(pGetDiskFreeSpaceEx(rootPathName,
&i64FreeBytesToCaller,
&totalSize2,
&freeSize2));
totalSize = totalSize2.QuadPart;
freeSize = freeSize2.QuadPart;
}
DWORD numSectorsPerCluster;
DWORD bytesPerSector;
DWORD numberOfFreeClusters;
DWORD totalNumberOfClusters;
if (!::GetDiskFreeSpace(rootPathName,
&numSectorsPerCluster,
&bytesPerSector,
&numberOfFreeClusters,
&totalNumberOfClusters))
return false;
clusterSize = (UInt64)bytesPerSector * (UInt64)numSectorsPerCluster;
if (!sizeIsDetected)
{
totalSize = clusterSize * (UInt64)totalNumberOfClusters;
freeSize = clusterSize * (UInt64)numberOfFreeClusters;
}
return true;
}
#ifndef _UNICODE
bool MyGetDiskFreeSpace(LPCWSTR rootPathName,
UInt64 &clusterSize, UInt64 &totalSize, UInt64 &freeSize)
{
return MyGetDiskFreeSpace(GetSystemString(rootPathName), clusterSize, totalSize, freeSize);
}
#endif
}}}
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