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93 lines
3.1 KiB
93 lines
3.1 KiB
#Region "Microsoft.VisualBasic::77f30e80f19b76467dd9d67b8b2122ee, ComputingServices\FileSystem\Protocols\Protocols.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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' Module API
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'
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' Properties: ProtocolEntry
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'
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' Function: GetSetLength, GetSetReadPosition, OpenHandle
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'
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'
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' /********************************************************************************/
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#End Region
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Imports System.IO
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Imports System.Text.RegularExpressions
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Imports Microsoft.VisualBasic.Net
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Imports Microsoft.VisualBasic.Net.Protocols
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Imports Microsoft.VisualBasic.Net.Protocols.Reflection
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Imports Microsoft.VisualBasic.Serialization
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Namespace FileSystem.Protocols
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''' <summary>
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'''
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''' </summary>
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Public Module API
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Public ReadOnly Property ProtocolEntry As Long =
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New Protocol(GetType(FileSystemAPI)).EntryPoint
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Public Function OpenHandle(file As String, mode As FileMode, access As FileAccess) As RequestStream
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Dim params As New FileOpen With {
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.FileName = file,
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.Mode = mode,
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.Access = access
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}
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Return RequestStream.CreateProtocol(ProtocolEntry, FileSystemAPI.OpenHandle, params)
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End Function
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''' <summary>
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'''
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''' </summary>
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''' <param name="pos">-100表示set</param>
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''' <param name="handle"></param>
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''' <returns></returns>
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Public Function GetSetReadPosition(pos As Long, handle As FileHandle) As RequestStream
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Dim args As New FileStreamPosition(handle) With {.Position = pos}
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Return RequestStream.CreateProtocol(ProtocolEntry, FileSystemAPI.FilePosition, args)
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End Function
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''' <summary>
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'''
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''' </summary>
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''' <param name="handle"></param>
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''' <returns></returns>
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Public Function GetSetLength(length As Long, handle As FileHandle) As RequestStream
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Dim args As New FileStreamPosition(handle) With {.Position = length}
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Return RequestStream.CreateProtocol(ProtocolEntry, FileSystemAPI.FileStreamLength, args)
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End Function
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End Module
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End Namespace
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