rainmeter-studio/Library/MeasureDiskSpace.cpp

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/*
Copyright (C) 2001 Kimmo Pekkola
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "StdAfx.h"
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#include "MeasureDiskSpace.h"
#include "Rainmeter.h"
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#include "System.h"
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enum DRIVETYPE
{
DRIVETYPE_ERROR = 0,
DRIVETYPE_REMOVED = 1,
DRIVETYPE_REMOVABLE = 3,
DRIVETYPE_FIXED = 4,
DRIVETYPE_NETWORK = 5,
DRIVETYPE_CDROM = 6,
DRIVETYPE_RAM = 7,
DRIVETYPE_MAX = DRIVETYPE_RAM
};
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/*
** CMeasureDiskSpace
**
** The constructor
**
*/
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CMeasureDiskSpace::CMeasureDiskSpace(CMeterWindow* meterWindow, const WCHAR* name) : CMeasure(meterWindow, name),
m_Type(false),
m_Total(false),
m_Label(false),
m_IgnoreRemovable(true),
m_OldTotalBytes()
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{
}
/*
** ~CMeasureDiskSpace
**
** The destructor
**
*/
CMeasureDiskSpace::~CMeasureDiskSpace()
{
}
/*
** Update
**
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** Updates the current disk free space value.
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**
*/
bool CMeasureDiskSpace::Update()
{
if (!CMeasure::PreUpdate()) return false;
if (!m_Drive.empty())
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{
const WCHAR* drive = m_Drive.c_str();
UINT type = GetDriveType(drive);
if (m_Type)
{
switch (type)
{
case DRIVE_UNKNOWN:
case DRIVE_NO_ROOT_DIR:
m_Value = DRIVETYPE_REMOVED;
m_DriveInfo = L"Removed";
break;
case DRIVE_REMOVABLE:
m_Value = DRIVETYPE_REMOVABLE;
m_DriveInfo = L"Removable";
break;
case DRIVE_FIXED:
m_Value = DRIVETYPE_FIXED;
m_DriveInfo = L"Fixed";
break;
case DRIVE_REMOTE:
m_Value = DRIVETYPE_NETWORK;
m_DriveInfo = L"Network";
break;
case DRIVE_CDROM:
m_Value = DRIVETYPE_CDROM;
m_DriveInfo = L"CDRom";
break;
case DRIVE_RAMDISK:
m_Value = DRIVETYPE_RAM;
m_DriveInfo = L"Ram";
break;
default:
m_Value = DRIVETYPE_ERROR;
m_DriveInfo = L"Error";
break;
}
}
else
{
BOOL sizeResult = FALSE;
ULONGLONG i64TotalBytes, i64FreeBytes;
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if (type != DRIVE_NO_ROOT_DIR)
{
if (type != DRIVE_CDROM && (!m_IgnoreRemovable || type != DRIVE_REMOVABLE)) // Ignore CD-ROMS and removable drives
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{
UINT oldMode = SetErrorMode(0);
SetErrorMode(oldMode | SEM_FAILCRITICALERRORS); // Prevent the system from displaying message box
SetLastError(ERROR_SUCCESS);
sizeResult = GetDiskFreeSpaceEx(drive, NULL, (PULARGE_INTEGER)&i64TotalBytes, (PULARGE_INTEGER)&i64FreeBytes);
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SetErrorMode(oldMode); // Reset
}
}
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if (sizeResult)
{
m_Value = (double)(__int64)((m_Total) ? i64TotalBytes : i64FreeBytes);
if (i64TotalBytes != m_OldTotalBytes)
{
// Total size was changed, so set new max value.
m_MaxValue = (double)(__int64)i64TotalBytes;
m_OldTotalBytes = i64TotalBytes;
}
}
else
{
m_Value = 0.0;
m_MaxValue = 0.0;
m_OldTotalBytes = 0;
}
if (m_Label)
{
BOOL labelResult = FALSE;
WCHAR volumeName[MAX_PATH + 1];
if (type != DRIVE_NO_ROOT_DIR)
{
if (!m_IgnoreRemovable || type != DRIVE_REMOVABLE) // Ignore removable drives
{
UINT oldMode = SetErrorMode(0);
SetErrorMode(oldMode | SEM_FAILCRITICALERRORS); // Prevent the system from displaying message box
labelResult = GetVolumeInformation(drive, volumeName, MAX_PATH + 1, NULL, NULL, NULL, NULL, 0);
SetErrorMode(oldMode); // Reset
}
}
m_DriveInfo = (labelResult) ? volumeName : L"";
}
else if (!m_DriveInfo.empty())
{
m_DriveInfo.clear();
}
}
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}
return PostUpdate();
}
/*
** GetStringValue
**
** Returns the time as string.
**
*/
const WCHAR* CMeasureDiskSpace::GetStringValue(AUTOSCALE autoScale, double scale, int decimals, bool percentual)
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{
if (m_Type || m_Label)
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{
return CheckSubstitute(m_DriveInfo.c_str());
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}
return CMeasure::GetStringValue(autoScale, scale, decimals, percentual);
}
/*
** ReadConfig
**
** Reads the measure specific configs.
**
*/
void CMeasureDiskSpace::ReadConfig(CConfigParser& parser, const WCHAR* section)
{
double oldMaxValue = m_MaxValue;
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CMeasure::ReadConfig(parser, section);
m_Drive = parser.ReadString(section, L"Drive", L"C:\\");
if (m_Drive.empty())
{
Log(LOG_WARNING, L"FreeDiskSpace: Drive= empty");
m_Value = 0.0;
m_MaxValue = 0.0;
m_OldTotalBytes = 0;
m_DriveInfo.clear();
}
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else if (!CSystem::IsPathSeparator(m_Drive[m_Drive.length() - 1])) // E.g. "C:"
{
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m_Drive += L'\\'; // A trailing backslash is required.
}
m_Type = (1 == parser.ReadInt(section, L"Type", 0));
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m_Total = (1 == parser.ReadInt(section, L"Total", 0));
m_Label = (1 == parser.ReadInt(section, L"Label", 0));
m_IgnoreRemovable = (1 == parser.ReadInt(section, L"IgnoreRemovable", 1));
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// Set the m_MaxValue
if (!m_Initialized)
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{
BOOL result = FALSE;
ULONGLONG i64TotalBytes;
if (!m_Drive.empty())
{
const WCHAR* drive = m_Drive.c_str();
UINT type = GetDriveType(drive);
if (type != DRIVE_NO_ROOT_DIR &&
type != DRIVE_CDROM && (!m_IgnoreRemovable || type != DRIVE_REMOVABLE)) // Ignore CD-ROMS and removable drives
{
UINT oldMode = SetErrorMode(0);
SetErrorMode(oldMode | SEM_FAILCRITICALERRORS); // Prevent the system from displaying message box
result = GetDiskFreeSpaceEx(drive, NULL, (PULARGE_INTEGER)&i64TotalBytes, NULL);
SetErrorMode(oldMode); // Reset
}
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}
if (result)
{
m_MaxValue = (double)(__int64)i64TotalBytes;
m_OldTotalBytes = i64TotalBytes;
}
else
{
m_MaxValue = 0.0;
m_OldTotalBytes = 0;
}
}
else
{
if (m_Type)
{
m_MaxValue = DRIVETYPE_MAX;
m_OldTotalBytes = 0;
}
else
{
m_MaxValue = oldMaxValue;
}
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}
}