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Code Issues Releases Wiki Activity

MeasureDiskSpace: Improved total size detection for removable device.

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This commit is contained in:
spx 2010-11-28 21:39:46 +00:00
parent 46829cbb6f
commit 62519fbdd5
2 changed files with 79 additions and 82 deletions
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9
Library/Measure.cpp
View File

@ -460,6 +460,10 @@ double CMeasure::GetValue()
*/
double CMeasure::GetRelativeValue()
{
double range = GetValueRange();
if (range != 0.0)
{
double value = GetValue();
value = min(m_MaxValue, value);
@ -467,7 +471,10 @@ double CMeasure::GetRelativeValue()
value -= m_MinValue;
return value / GetValueRange();
return value / range;
}
return 1.0;
}
/*

108
Library/MeasureDiskSpace.cpp
View File

@ -58,88 +58,66 @@ bool CMeasureDiskSpace::Update()
if (!m_Drive.empty())
{
BOOL sizeResult = FALSE, labelResult = FALSE;
ULARGE_INTEGER i64TotalBytes, i64FreeBytes;
WCHAR volumeName[MAX_PATH] = {0};
UINT type = GetDriveType(m_Drive.c_str());
if (type != DRIVE_NO_ROOT_DIR)
{
if (type != DRIVE_CDROM && (!m_IgnoreRemovable || type != DRIVE_REMOVABLE)) // Ignore CD-ROMS and removable drives
{
ULARGE_INTEGER i64FreeBytesToCaller, i64TotalBytes, i64FreeBytes;
ULARGE_INTEGER i64FreeBytesToCaller;
UINT oldMode = SetErrorMode(0);
SetErrorMode(oldMode | SEM_FAILCRITICALERRORS); // Prevent the system from displaying message box
SetLastError(ERROR_SUCCESS);
BOOL result = GetDiskFreeSpaceEx(m_Drive.c_str(), &i64FreeBytesToCaller, &i64TotalBytes, &i64FreeBytes);
DWORD err = GetLastError();
sizeResult = GetDiskFreeSpaceEx(m_Drive.c_str(), &i64FreeBytesToCaller, &i64TotalBytes, &i64FreeBytes);
SetErrorMode(oldMode); // Reset
if (result)
{
LARGE_INTEGER tmpInt;
if (m_Total)
{
tmpInt.QuadPart = i64TotalBytes.QuadPart;
}
else
{
tmpInt.QuadPart = i64FreeBytes.QuadPart;
}
m_Value = (double)tmpInt.QuadPart;
if (i64TotalBytes.QuadPart != m_OldTotalBytes)
{
// Total size was changed, so set new max value.
tmpInt.QuadPart = i64TotalBytes.QuadPart;
m_MaxValue = (double)tmpInt.QuadPart;
m_OldTotalBytes = i64TotalBytes.QuadPart;
}
}
else if (err == ERROR_NOT_READY)
{
// Media isn't ready, so reset to zero.
m_Value = 0;
m_OldTotalBytes = 0;
}
}
else
{
m_Value = 0;
m_OldTotalBytes = 0;
}
if (m_Label)
{
if (!m_IgnoreRemovable || type != DRIVE_REMOVABLE) // Ignore removable drives
{
WCHAR volumeName[MAX_PATH] = {0};
UINT oldMode = SetErrorMode(0);
SetErrorMode(oldMode | SEM_FAILCRITICALERRORS); // Prevent the system from displaying message box
BOOL result = GetVolumeInformation(m_Drive.c_str(), volumeName, MAX_PATH, NULL, NULL, NULL, NULL, 0);
labelResult = GetVolumeInformation(m_Drive.c_str(), volumeName, MAX_PATH, NULL, NULL, NULL, NULL, 0);
SetErrorMode(oldMode); // Reset
}
}
}
if (result)
if (sizeResult)
{
m_Value = (double)((m_Total) ? i64TotalBytes.QuadPart : i64FreeBytes.QuadPart);
if (i64TotalBytes.QuadPart != m_OldTotalBytes)
{
// Total size was changed, so set new max value.
m_MaxValue = (double)i64TotalBytes.QuadPart;
m_OldTotalBytes = i64TotalBytes.QuadPart;
}
}
else
{
m_Value = 0.0;
m_MaxValue = 0.0;
m_OldTotalBytes = 0;
}
if (labelResult)
{
m_LabelName = volumeName;
}
else
{
m_LabelName = L"";
}
}
else
if (m_Label || !m_LabelName.empty())
{
m_LabelName = L"";
}
}
}
else // Drive path is invalid.
{
m_Value = 0;
m_OldTotalBytes = 0;
if (m_Label) m_LabelName = L"";
}
}
return PostUpdate();
}
@ -168,13 +146,17 @@ const WCHAR* CMeasureDiskSpace::GetStringValue(bool autoScale, double scale, int
*/
void CMeasureDiskSpace::ReadConfig(CConfigParser& parser, const WCHAR* section)
{
double oldMaxValue = m_MaxValue;
CMeasure::ReadConfig(parser, section);
m_Drive = parser.ReadString(section, L"Drive", L"C:\\");
if (m_Drive.empty())
{
LSLog(LOG_DEBUG, APPNAME, L"Drive path is not given.");
m_Value = 0;
m_Value = 0.0;
m_MaxValue = 0.0;
m_OldTotalBytes = 0;
m_LabelName = L"";
}
else if (m_Drive[m_Drive.length() - 1] != L'\\') // E.g. "C:"
@ -187,31 +169,39 @@ void CMeasureDiskSpace::ReadConfig(CConfigParser& parser, const WCHAR* section)
m_IgnoreRemovable = (1 == parser.ReadInt(section, L"IgnoreRemovable", 1));
// Set the m_MaxValue
if (!m_Initialized)
{
BOOL result = FALSE;
ULARGE_INTEGER i64TotalBytes;
if (!m_Drive.empty())
{
UINT type = GetDriveType(m_Drive.c_str());
if (type != DRIVE_NO_ROOT_DIR &&
type != DRIVE_CDROM && (!m_IgnoreRemovable || type != DRIVE_REMOVABLE)) // Ignore CD-ROMS and removable drives
{
ULARGE_INTEGER i64FreeBytesToCaller, i64TotalBytes, i64FreeBytes;
ULARGE_INTEGER i64FreeBytesToCaller, i64FreeBytes;
UINT oldMode = SetErrorMode(0);
SetErrorMode(oldMode | SEM_FAILCRITICALERRORS); // Prevent the system from displaying message box
BOOL result = GetDiskFreeSpaceEx(m_Drive.c_str(), &i64FreeBytesToCaller, &i64TotalBytes, &i64FreeBytes);
result = GetDiskFreeSpaceEx(m_Drive.c_str(), &i64FreeBytesToCaller, &i64TotalBytes, &i64FreeBytes);
SetErrorMode(oldMode); // Reset
}
}
if (result)
{
LARGE_INTEGER tmpInt;
tmpInt.QuadPart = i64TotalBytes.QuadPart;
m_MaxValue = (double)tmpInt.QuadPart;
m_MaxValue = (double)i64TotalBytes.QuadPart;
m_OldTotalBytes = i64TotalBytes.QuadPart;
}
else
{
m_MaxValue = 0.0;
m_OldTotalBytes = 0;
}
}
else
{
m_MaxValue = oldMaxValue;
}
}