Files
GBM/GBM/Managers/mgrPath.vb
MikeMaximus 783bf89241 Fix #171
2018-11-16 09:52:48 -06:00

627 lines
25 KiB
VB.net

Imports GBM.My.Resources
Imports System.IO
Imports System.Text.RegularExpressions
Imports System.Reflection
Public Class mgrPath
'Important Note: Any changes to sSettingsRoot & sDBLocation need to be mirrored in frmMain.vb -> VerifyGameDataPath
Private Shared sSettingsRoot As String = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) & Path.DirectorySeparatorChar & "gbm"
Private Shared sDBLocation As String = sSettingsRoot & Path.DirectorySeparatorChar & "gbm.s3db"
Private Shared sIncludeFile As String = sSettingsRoot & Path.DirectorySeparatorChar & "gbm_include.txt"
Private Shared sExcludeFile As String = sSettingsRoot & Path.DirectorySeparatorChar & "gbm_exclude.txt"
Private Shared sLogFile As String = sSettingsRoot & Path.DirectorySeparatorChar & "gbm_log_" & Date.Now.ToString("dd-MM-yyyy-HH-mm-ss") & ".txt"
Private Shared sRemoteDatabaseLocation As String
Private Shared hshCustomVariables As Hashtable
Private Shared oReleaseType As ProcessorArchitecture = AssemblyName.GetAssemblyName(Application.ExecutablePath()).ProcessorArchitecture
Shared Sub New()
SetEnv()
LoadCustomVariables()
End Sub
Shared ReadOnly Property ReleaseType As Integer
Get
Select Case oReleaseType
Case ProcessorArchitecture.Amd64
Return 64
Case ProcessorArchitecture.IA64
Return 64
Case ProcessorArchitecture.MSIL
Return 32
Case ProcessorArchitecture.X86
Return 32
Case ProcessorArchitecture.None
Return 32
End Select
Return 32
End Get
End Property
Shared ReadOnly Property Default7zLocation As String
Get
If mgrCommon.IsUnix Then
Return "/usr/bin/7za"
End If
Select Case oReleaseType
Case ProcessorArchitecture.Amd64
Return Application.StartupPath & "\Utilities\x64\7za.exe"
Case ProcessorArchitecture.IA64
Return Application.StartupPath & "\Utilities\x64\7za.exe"
Case ProcessorArchitecture.MSIL
Return Application.StartupPath & "\Utilities\x86\7za.exe"
Case ProcessorArchitecture.X86
Return Application.StartupPath & "\Utilities\x86\7za.exe"
Case ProcessorArchitecture.None
Return Application.StartupPath & "\Utilities\x86\7za.exe"
End Select
Return Application.StartupPath & "\Utilities\x86\7za.exe"
End Get
End Property
Shared ReadOnly Property DatabaseLocation As String
Get
Return sDBLocation
End Get
End Property
Shared ReadOnly Property IncludeFileLocation As String
Get
Return sIncludeFile
End Get
End Property
Shared ReadOnly Property ExcludeFileLocation As String
Get
Return sExcludeFile
End Get
End Property
Shared ReadOnly Property LogFileLocation As String
Get
Return sLogFile
End Get
End Property
Shared ReadOnly Property SettingsRoot As String
Get
Return sSettingsRoot
End Get
End Property
Shared Property RemoteDatabaseLocation As String
Get
Return sRemoteDatabaseLocation
End Get
Set(value As String)
sRemoteDatabaseLocation = value & Path.DirectorySeparatorChar & "gbm.s3db"
End Set
End Property
Public Shared Function ValidatePathForOS(ByVal sCheckString As String) As String
Dim cInvalidCharacters As Char() = Path.GetInvalidPathChars
For Each c As Char In cInvalidCharacters
sCheckString = sCheckString.Replace(c, "")
Next
Return sCheckString.Trim
End Function
Public Shared Function ValidateFileNameForOS(ByVal sCheckString As String) As String
Dim cInvalidCharacters As Char() = Path.GetInvalidFileNameChars
For Each c As Char In cInvalidCharacters
sCheckString = sCheckString.Replace(c, "")
Next
If sCheckString.Length > 257 Then
sCheckString = sCheckString.Substring(0, 257)
End If
Return sCheckString.Trim
End Function
Public Shared Function DetermineRelativePath(ByVal sProcessPath As String, ByVal sSavePath As String) As String
Dim sPath1Array As String()
Dim sPath2Array As String()
Dim sPath1 As String
Dim sPath2 As String
Dim sResult As String = String.Empty
Dim i As Integer = 0
Dim iRemove As Integer = 0
Dim iBackFolders As Integer = 0
Dim bDeep As Boolean
Dim cDS As Char = Path.DirectorySeparatorChar 'Set the directory seperator based on the OS
If Not mgrCommon.IsUnix Then
'If we are working with a case insenstive file system, use a uniform case to reduce possible issues
sProcessPath = sProcessPath.ToLower
sSavePath = sSavePath.ToLower
Else
'If we are on Unix trim the root off
sProcessPath = sProcessPath.TrimStart(cDS)
sSavePath = sSavePath.TrimStart(cDS)
End If
'We need to ensure we have a single trailing slash on the parameters
sProcessPath = sProcessPath.TrimEnd(cDS)
sSavePath = sSavePath.TrimEnd(cDS)
sProcessPath &= cDS
sSavePath &= cDS
'Determines the direction we need to go, we always want to be relative to the process location
If sSavePath.Split(cDS).Length > sProcessPath.Split(cDS).Length Then
sPath1 = sProcessPath
sPath2 = sSavePath
bDeep = True
Else
sPath1 = sSavePath
sPath2 = sProcessPath
bDeep = False
End If
'Build an array of folders to work with from each path
sPath1Array = sPath1.Split(cDS)
sPath2Array = sPath2.Split(cDS)
'Take the shortest path and remove the common folders from both
For Each s As String In sPath1Array
If s = sPath2Array(i) And s <> String.Empty Then
sPath1 = sPath1.Remove(sPath1.IndexOf(s), s.Length + 1)
sPath2 = sPath2.Remove(sPath2.IndexOf(s), s.Length + 1)
End If
i = i + 1
Next
'Remove the trailing slashes
sPath1 = sPath1.TrimEnd(cDS)
sPath2 = sPath2.TrimEnd(cDS)
'Determine which way we go
If bDeep Then
If sPath1.Length > 0 Then
iBackFolders = sPath1.Split(cDS).Length
End If
sResult = sPath2
Else
If sPath2.Length > 0 Then
iBackFolders = sPath2.Split(cDS).Length
End If
sResult = sPath1
End If
'Insert direction modifiers based on how many folders are left
For i = 1 To iBackFolders
sResult = ".." & cDS & sResult
Next i
'Done
Return sResult
End Function
Public Shared Sub ModWinePathData(ByRef oGame As clsGame)
If Not oGame.AbsolutePath Then oGame.Path = oGame.Path.Replace("\", Path.DirectorySeparatorChar)
oGame.FileType = oGame.FileType.Replace("\", Path.DirectorySeparatorChar)
oGame.ExcludeList = oGame.ExcludeList.Replace("\", Path.DirectorySeparatorChar)
End Sub
Private Shared Function BuildWinePath(ByVal sPath As String, ByVal sWinePrefix As String) As String
Dim sRealPath As String
Dim cDriveLetter As Char
Dim sWineDrive As String
Try
'Grab Path
sRealPath = sPath.Split("=")(1)
'Remove Quotes
sRealPath = sRealPath.TrimStart("""")
sRealPath = sRealPath.TrimEnd("""")
'Flip Seperators
sRealPath = sRealPath.Replace("\\", Path.DirectorySeparatorChar)
'Change Wine Drive
cDriveLetter = sRealPath.Chars(sRealPath.IndexOf(":") - 1)
sWineDrive = "drive_" & cDriveLetter
sRealPath = sRealPath.Replace(cDriveLetter & ":", sWineDrive.ToLower)
Return sWinePrefix & Path.DirectorySeparatorChar & sRealPath
Catch ex As Exception
mgrCommon.ShowMessage(mgrPath_ErrorBuildingWinePath, ex.Message, MsgBoxStyle.Exclamation)
Return String.Empty
End Try
End Function
Public Shared Function GetWineSavePath(ByVal sPrefix As String, ByVal sPath As String) As String
Dim sRegistry As String
Dim sWinePath As String
Dim sReplace As String
Dim oParse As Regex
Dim oMatch As Match
Try
If sPath.Contains("%APPDATA%") Then
sReplace = "%APPDATA%"
sRegistry = File.ReadAllText(sPrefix & Path.DirectorySeparatorChar & "user.reg")
oParse = New Regex("""AppData""="".+?(?=\n)")
ElseIf sPath.Contains("%LOCALAPPDATA%Low") Then
sReplace = "%LOCALAPPDATA%Low"
sRegistry = File.ReadAllText(sPrefix & Path.DirectorySeparatorChar & "user.reg")
oParse = New Regex("""{A520A1A4-1780-4FF6-BD18-167343C5AF16}""="".+?(?=\n)")
ElseIf sPath.Contains("%LOCALAPPDATA%") Then
sReplace = "%LOCALAPPDATA%"
sRegistry = File.ReadAllText(sPrefix & Path.DirectorySeparatorChar & "user.reg")
oParse = New Regex("""Local AppData""="".+?(?=\n)")
ElseIf sPath.Contains("%USERDOCUMENTS%") Then
sReplace = "%USERDOCUMENTS%"
sRegistry = File.ReadAllText(sPrefix & Path.DirectorySeparatorChar & "user.reg")
oParse = New Regex("""Personal""="".+?(?=\n)")
ElseIf sPath.Contains("%COMMONDOCUMENTS%") Then
sReplace = "%COMMONDOCUMENTS%"
sRegistry = File.ReadAllText(sPrefix & Path.DirectorySeparatorChar & "system.reg")
oParse = New Regex("""Common Documents""="".+?(?=\n)")
ElseIf sPath.Contains("%PROGRAMDATA%") Then
sReplace = "%PROGRAMDATA%"
sRegistry = File.ReadAllText(sPrefix & Path.DirectorySeparatorChar & "system.reg")
oParse = New Regex("""Common AppData""="".+?(?=\n)")
ElseIf sPath.Contains("%USERPROFILE%") Then
sReplace = "%USERPROFILE%"
sRegistry = File.ReadAllText(sPrefix & Path.DirectorySeparatorChar & "user.reg")
oParse = New Regex("""Desktop""="".+?(?=\\\\Desktop)")
Else
Return sPath
End If
If oParse.IsMatch(sRegistry) Then
oMatch = oParse.Match(sRegistry)
sWinePath = BuildWinePath(oMatch.Value, sPrefix)
sPath = sPath.Replace("\", Path.DirectorySeparatorChar)
Return sPath.Replace(sReplace, sWinePath)
End If
Return sPath
Catch ex As Exception
mgrCommon.ShowMessage(mgrPath_ErrorConvertWineSavePath, ex.Message, MsgBoxStyle.Exclamation)
Return sPath
End Try
End Function
Public Shared Function GetWinePrefix(ByVal prs As Process) As String
Dim sEnv As String
Dim oParse As New Regex("WINEPREFIX=.+?(?=\x00)")
Dim oMatch As Match
Try
sEnv = File.ReadAllText("/proc/" & prs.Id.ToString() & "/environ")
If oParse.IsMatch(sEnv) Then
oMatch = oParse.Match(sEnv)
Return oMatch.Value.Trim("/").Split("=")(1)
Else
'When WINEPREFIX is not part of the command, we will assume the default prefix.
Return Environment.GetFolderPath(Environment.SpecialFolder.Personal) & "/.wine"
End If
Catch ex As Exception
mgrCommon.ShowMessage(mgrPath_ErrorWinePrefix, ex.Message, MsgBoxStyle.Exclamation)
Return String.Empty
End Try
End Function
Public Shared Function CheckSpecialPaths() As Boolean
Dim hshEnvs As New Hashtable
Dim bNoError As Boolean = True
hshEnvs.Add("Documents", Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments))
hshEnvs.Add("AppDataRoaming", Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData))
hshEnvs.Add("AppDataLocal", Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData))
hshEnvs.Add("ProgramData", Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData))
If Not mgrCommon.IsUnix Then
hshEnvs.Add("UserData", Environment.GetFolderPath(Environment.SpecialFolder.UserProfile))
hshEnvs.Add("PublicDocuments", Environment.GetFolderPath(Environment.SpecialFolder.CommonDocuments))
End If
For Each de As DictionaryEntry In hshEnvs
If de.Value = String.Empty Then
mgrCommon.ShowMessage(mgrPath_SpecialPathError, de.Key, MsgBoxStyle.Critical)
bNoError = False
End If
Next
Return bNoError
End Function
Private Shared Sub SetEnv()
If Not mgrCommon.IsUnix Then
Environment.SetEnvironmentVariable("USERDOCUMENTS", Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments))
Environment.SetEnvironmentVariable("COMMONDOCUMENTS", Environment.GetFolderPath(Environment.SpecialFolder.CommonDocuments))
End If
End Sub
Public Shared Function ReplaceSpecialPaths(ByVal sValue As String) As String
Dim sXdgData As String = "${XDG_DATA_HOME:-~/.local/share}"
Dim sEnvAppDataLocal As String = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)
Dim sXdgConfig As String = "${XDG_CONFIG_HOME:-~/.config}"
Dim sEnvAppDataRoaming As String = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)
Dim sHomeDir As String = "${HOME}"
Dim sEnvCurrentUser As String = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile)
Dim oCustomVariable As clsPathVariable
For Each oCustomVariable In hshCustomVariables.Values
If sValue.Contains(oCustomVariable.FormattedName) Then
Return sValue.Replace(oCustomVariable.FormattedName, oCustomVariable.Path)
End If
Next
If mgrCommon.IsUnix Then
'$VAR_iable
Dim oParse As New Regex("\$([a-zA-Z0-9_]+)")
'${VAR_iable} but not advanced syntax like ${VAR:-iable}
Dim oParseBracketed As New Regex("\$\{([a-zA-Z0-9_]+?)\}")
'~ not inside ${...}
Dim oParseTilde As New Regex("~(?![^\$\{]*\})")
If sEnvCurrentUser = String.Empty Then
'Fall back
sEnvCurrentUser = Environment.GetFolderPath(Environment.SpecialFolder.Personal)
End If
If sEnvCurrentUser = String.Empty Then
'Fall back
sEnvCurrentUser = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)
End If
'$HOME to ${HOME}
sValue = oParse.Replace(sValue, "${$1}")
'Special notations for home directory
sValue = oParseTilde.Replace(sValue, "${HOME}")
'XDG Base Directory Specification has default values
sValue = sValue.Replace("${XDG_DATA_HOME}", sXdgData)
sValue = sValue.Replace("${XDG_CONFIG_HOME}", sXdgConfig)
'Replace with paths
sValue = sValue.Replace(sXdgData, sEnvAppDataLocal)
sValue = sValue.Replace(sXdgConfig, sEnvAppDataRoaming)
sValue = sValue.Replace(sHomeDir, sEnvCurrentUser)
'Escape real Windows variables
sValue = sValue.Replace("%", "\%")
'Transform Linux variables to Windows variables
sValue = oParseBracketed.Replace(sValue, "%$1%")
End If
'On Linux real Linux environmental variables are used
sValue = Environment.ExpandEnvironmentVariables(sValue)
If mgrCommon.IsUnix Then
'Transform missing variables back
Dim oParse As New Regex("%([a-zA-Z0-9_]+?)%")
sValue = oParse.Replace(sValue, "${$1}")
'Unscape real Windows variables
sValue = sValue.Replace("\%", "%")
End If
Return sValue
End Function
Public Shared Function ReverseSpecialPaths(sValue As String) As String
Dim sMyDocs As String = "%USERDOCUMENTS%"
Dim sEnvMyDocs As String = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)
Dim sPublicDocs As String = "%COMMONDOCUMENTS%"
Dim sEnvPublicDocs As String = Environment.GetFolderPath(Environment.SpecialFolder.CommonDocuments)
Dim sAppDataLocal As String = "%LOCALAPPDATA%"
Dim sXdgData As String = "${XDG_DATA_HOME:-~/.local/share}"
Dim sEnvAppDataLocal As String = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)
Dim sAppDataRoaming As String = "%APPDATA%"
Dim sXdgConfig As String = "${XDG_CONFIG_HOME:-~/.config}"
Dim sEnvAppDataRoaming As String = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)
Dim sCurrentUser As String = "%USERPROFILE%"
Dim sHomeDir As String = "~"
Dim sEnvCurrentUser As String = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile)
Dim sProgramData As String = "%PROGRAMDATA%"
Dim sEnvProgramData As String = Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData)
Dim oCustomVariable As clsPathVariable
For Each oCustomVariable In hshCustomVariables.Values
If sValue.Contains(oCustomVariable.Path) Then
Return sValue.Replace(oCustomVariable.Path, oCustomVariable.FormattedName)
End If
Next
If Not mgrCommon.IsUnix Then
If sValue.Contains(sEnvAppDataRoaming) Then
Return sValue.Replace(sEnvAppDataRoaming, sAppDataRoaming)
End If
If sValue.Contains(sEnvAppDataLocal) Then
Return sValue.Replace(sEnvAppDataLocal, sAppDataLocal)
End If
If sValue.Contains(sEnvProgramData) Then
Return sValue.Replace(sEnvProgramData, sProgramData)
End If
'This needs to be tested last for Unix compatability
If sValue.Contains(sEnvMyDocs) Then
Return sValue.Replace(sEnvMyDocs, sMyDocs)
End If
'Mono doesn't set a path for these folders
If sValue.Contains(sEnvPublicDocs) Then
Return sValue.Replace(sEnvPublicDocs, sPublicDocs)
End If
If sValue.Contains(sEnvCurrentUser) Then
Return sValue.Replace(sEnvCurrentUser, sCurrentUser)
End If
Else
'Use different paths on Linux
If sValue.Contains(sEnvAppDataRoaming) Then
Return sValue.Replace(sEnvAppDataRoaming, sXdgConfig)
End If
If sValue.Contains(sEnvAppDataLocal) Then
Return sValue.Replace(sEnvAppDataLocal, sXdgData)
End If
'Must be last
If sValue.Contains(sEnvCurrentUser) Then
If sEnvCurrentUser = String.Empty Then
'Fall back
sEnvCurrentUser = Environment.GetFolderPath(Environment.SpecialFolder.Personal)
End If
If sEnvCurrentUser = String.Empty Then
'Fall back
sEnvCurrentUser = sMyDocs
End If
Return sValue.Replace(sEnvCurrentUser, sHomeDir)
End If
End If
Return sValue
End Function
Public Shared Function IsAbsolute(sValue As String) As Boolean
Dim hshFolders As New Hashtable
Dim hshCustomVariables As Hashtable = mgrVariables.ReadVariables
Dim oCustomVariable As clsPathVariable
hshFolders.Add(Guid.NewGuid.ToString, Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData))
hshFolders.Add(Guid.NewGuid.ToString, Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData))
hshFolders.Add(Guid.NewGuid.ToString, Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments))
'Don't use these in Unix
If Not mgrCommon.IsUnix Then
hshFolders.Add(Guid.NewGuid.ToString, Environment.GetFolderPath(Environment.SpecialFolder.CommonDocuments))
hshFolders.Add(Guid.NewGuid.ToString, Environment.GetFolderPath(Environment.SpecialFolder.UserProfile))
End If
'Load Custom Variables
For Each oCustomVariable In hshCustomVariables.Values
hshFolders.Add(Guid.NewGuid.ToString, oCustomVariable.Path)
Next
For Each de As DictionaryEntry In hshFolders
If sValue.Contains(de.Value) Then
Return True
End If
Next
Return False
End Function
Public Shared Function VerifyCustomVariables(ByVal hshScanlist As Hashtable, ByRef sGames As String) As Boolean
Dim hshCustomVariables As Hashtable = mgrVariables.ReadVariables
'Reserved variables will be resolved on Windows, but not on a Linux. Therefore we an ignore list here, otherwise GBM will bitch about them when using Windows configurations for Wine.
Dim oReservedVariables As List(Of String) = mgrVariables.GetReservedVariables
Dim sVariableCheck As String
Dim sPattern As String = "\%(.*)\%"
Dim oGame As clsGame
Dim oMatch As Match
Dim bClean As Boolean = True
For Each oGame In hshScanlist.Values
oMatch = Regex.Match(oGame.Path, sPattern)
If oMatch.Success Then
sVariableCheck = oMatch.Value.Replace("%", String.Empty)
If Not hshCustomVariables.ContainsKey(sVariableCheck) And Not oReservedVariables.Contains(sVariableCheck) Then
sGames &= vbCrLf & oGame.Name & " (" & sVariableCheck & ")"
bClean = False
End If
End If
Next
Return bClean
End Function
Public Shared Sub LoadCustomVariables()
hshCustomVariables = mgrVariables.ReadVariables
For Each oVariable As clsPathVariable In hshCustomVariables.Values
Environment.SetEnvironmentVariable(oVariable.Name, oVariable.Path)
Next
End Sub
Public Shared Function SetManualGamePath() As String
Dim sDefaultFolder As String = Environment.GetFolderPath(Environment.SpecialFolder.Desktop)
Dim sNewPath As String
sNewPath = mgrCommon.OpenFolderBrowser("Manual_Game_Location", mgrPath_ChoosePath, sDefaultFolder, False)
Return sNewPath
End Function
Public Shared Function ProcessPathSearch(ByVal sGameName As String, ByVal sProcess As String, ByVal sSearchReason As String, Optional ByVal bNoAuto As Boolean = False) As String
Dim frmFind As New frmFileFolderSearch
Dim sMessage As String
Dim sFolder As String = String.Empty
Dim bSearchFailed As Boolean = False
frmFind.GameName = sGameName
frmFind.SearchItem = sProcess & ".*"
frmFind.FolderSearch = False
'We can't automatically search for certain game types
If bNoAuto Then
sMessage = mgrCommon.FormatString(mgrPath_ConfirmManualPath, sSearchReason)
If mgrCommon.ShowMessage(sMessage, MsgBoxStyle.YesNo) = MsgBoxResult.Yes Then
sFolder = SetManualgamePath()
End If
Return sFolder
End If
sMessage = mgrCommon.FormatString(mgrPath_ConfirmAutoPath, sSearchReason)
If mgrCommon.ShowMessage(sMessage, MsgBoxStyle.YesNo) = MsgBoxResult.Yes Then
frmFind.ShowDialog()
If frmFind.FoundItem <> String.Empty Then
Return frmFind.FoundItem
Else
bSearchFailed = True
End If
If bSearchFailed Then
sMessage = mgrCommon.FormatString(mgrPath_ConfirmAutoFailure, sGameName)
Else
sMessage = mgPath_ConfirmManualPathNoParam
End If
If mgrCommon.ShowMessage(sMessage, MsgBoxStyle.YesNo) = MsgBoxResult.Yes Then
sFolder = SetManualgamePath()
End If
frmFind.Dispose()
End If
Return sFolder
End Function
Public Shared Function VerifyBackupPath(ByRef sBackupPath As String) As Boolean
Dim dBrowser As FolderBrowserDialog
If Not Directory.Exists(sBackupPath) Then
If mgrCommon.ShowMessage(mgrPath_ConfirmBackupLocation, sBackupPath, MsgBoxStyle.YesNo) = MsgBoxResult.Yes Then
dBrowser = New FolderBrowserDialog
dBrowser.SelectedPath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)
If dBrowser.ShowDialog = DialogResult.OK Then
sBackupPath = dBrowser.SelectedPath
Return True
Else
Return False
End If
Else
Return False
End If
End If
Return True
End Function
End Class