112 lines
3.7 KiB
VB.net
112 lines
3.7 KiB
VB.net
#Region "Microsoft.VisualBasic::9a97c6afb3a0c21fd9f7ba7d75d0ed8a, Microsoft.VisualBasic.Core\Extensions\IO\Path\TemporaryEnvironment.vb"
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' Author:
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'
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' asuka (amethyst.asuka@gcmodeller.org)
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' xie (genetics@smrucc.org)
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' xieguigang (xie.guigang@live.com)
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'
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' Copyright (c) 2018 GPL3 Licensed
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'
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'
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' GNU GENERAL PUBLIC LICENSE (GPL3)
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'
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'
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' This program is free software: you can redistribute it and/or modify
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' it under the terms of the GNU General Public License as published by
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' the Free Software Foundation, either version 3 of the License, or
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' (at your option) any later version.
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'
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' This program is distributed in the hope that it will be useful,
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' but WITHOUT ANY WARRANTY; without even the implied warranty of
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' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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' GNU General Public License for more details.
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'
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' You should have received a copy of the GNU General Public License
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' along with this program. If not, see <http://www.gnu.org/licenses/>.
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' /********************************************************************************/
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' Summaries:
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' Class TemporaryEnvironment
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'
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' Constructor: (+1 Overloads) Sub New
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'
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' Function: makeDirectoryExists
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'
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' Sub: (+2 Overloads) Dispose
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'
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'
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' /********************************************************************************/
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#End Region
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Namespace FileIO
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''' <summary>
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''' Workspace model
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'''
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''' 在<see cref="TemporaryEnvironment.Dispose()"/>的时候，文件夹会切换回来
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''' </summary>
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Public Class TemporaryEnvironment : Inherits Directory
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Implements IDisposable
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ReadOnly previous$
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''' <summary>
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''' 如果不存在会创建目标文件夹
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''' </summary>
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''' <param name="newLocation"></param>
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Sub New(newLocation As String)
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Call MyBase.New(DIR:=makeDirectoryExists(newLocation))
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previous = App.CurrentDirectory
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App.CurrentDirectory = newLocation
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End Sub
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Private Shared Function makeDirectoryExists(dir As String) As String
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If Not dir.DirectoryExists Then
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Call dir.MkDIR
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End If
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Return dir
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End Function
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#Region "IDisposable Support"
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Private disposedValue As Boolean ' To detect redundant calls
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' IDisposable
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Protected Overridable Sub Dispose(disposing As Boolean)
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If Not disposedValue Then
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If disposing Then
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' TODO: dispose managed state (managed objects).
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App.CurrentDirectory = previous
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End If
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' TODO: free unmanaged resources (unmanaged objects) and override Finalize() below.
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' TODO: set large fields to null.
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End If
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disposedValue = True
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End Sub
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' TODO: override Finalize() only if Dispose(disposing As Boolean) above has code to free unmanaged resources.
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'Protected Overrides Sub Finalize()
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' ' Do not change this code. Put cleanup code in Dispose(disposing As Boolean) above.
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' Dispose(False)
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' MyBase.Finalize()
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'End Sub
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' This code added by Visual Basic to correctly implement the disposable pattern.
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Public Sub Dispose() Implements IDisposable.Dispose
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' Do not change this code. Put cleanup code in Dispose(disposing As Boolean) above.
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Dispose(True)
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' TODO: uncomment the following line if Finalize() is overridden above.
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' GC.SuppressFinalize(Me)
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End Sub
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#End Region
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End Class
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End Namespace
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