| 1 | #Region "Microsoft.VisualBasic::0b6714930826e413b5320efe5892ef2d, Microsoft.VisualBasic.Core\Extensions\IO\Extensions\IO.vb" |
| 2 | |
| 3 | ' Author: |
| 4 | ' |
| 5 | ' asuka (amethyst.asuka@gcmodeller.org) |
| 6 | ' xie (genetics@smrucc.org) |
| 7 | ' xieguigang (xie.guigang@live.com) |
| 8 | ' |
| 9 | ' Copyright (c) 2018 GPL3 Licensed |
| 10 | ' |
| 11 | ' |
| 12 | ' GNU GENERAL PUBLIC LICENSE (GPL3) |
| 13 | ' |
| 14 | ' |
| 15 | ' This program is free software: you can redistribute it and/or modify |
| 16 | ' it under the terms of the GNU General Public License as published by |
| 17 | ' the Free Software Foundation, either version 3 of the License, or |
| 18 | ' (at your option) any later version. |
| 19 | ' |
| 20 | ' This program is distributed in the hope that it will be useful, |
| 21 | ' but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | ' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 23 | ' GNU General Public License for more details. |
| 24 | ' |
| 25 | ' You should have received a copy of the GNU General Public License |
| 26 | ' along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 27 | |
| 28 | |
| 29 | |
| 30 | ' /********************************************************************************/ |
| 31 | |
| 32 | ' Summaries: |
| 33 | |
| 34 | ' Module IOExtensions |
| 35 | ' |
| 36 | ' Function: FixPath, FlushAllLines, (+3 Overloads) FlushStream, Open, OpenReader |
| 37 | ' OpenTextWriter, ReadBinary, ReadVector |
| 38 | ' |
| 39 | ' Sub: ClearFileBytes, FlushTo |
| 40 | ' |
| 41 | ' /********************************************************************************/ |
| 42 | |
| 43 | #End Region |
| 44 | |
| 45 | Imports System.IO |
| 46 | Imports System.Runtime.CompilerServices |
| 47 | Imports System.Text |
| 48 | Imports Microsoft.VisualBasic.CommandLine.Reflection |
| 49 | Imports Microsoft.VisualBasic.FileIO |
| 50 | Imports Microsoft.VisualBasic.Language.Default |
| 51 | Imports Microsoft.VisualBasic.Linq |
| 52 | Imports Microsoft.VisualBasic.Scripting.MetaData |
| 53 | Imports Microsoft.VisualBasic.Text |
| 54 | |
| 55 | ''' <summary> |
| 56 | ''' The extension API for system file io.(IO函数拓展) |
| 57 | ''' </summary> |
| 58 | <Package("IO")> |
| 59 | Public Module IOExtensions |
| 60 | |
| 61 | ReadOnly UTF8 As DefaultValue(Of Encoding) = Encoding.UTF8 |
| 62 | |
| 63 | ''' <summary> |
| 64 | ''' Open text writer interface from a given <see cref="Stream"/> <paramref name="s"/>. |
| 65 | ''' </summary> |
| 66 | ''' <param name="s"></param> |
| 67 | ''' <param name="encoding">By default is using <see cref="UTF8"/> text encoding.</param> |
| 68 | ''' <returns></returns> |
| 69 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
| 70 | <Extension> |
| 71 | Public Function OpenTextWriter(s As Stream, Optional encoding As Encoding = Nothing) As StreamWriter |
| 72 | Return New StreamWriter(s, encoding Or UTF8) With { |
| 73 | .NewLine = ASCII.LF |
| 74 | } |
| 75 | End Function |
| 76 | |
| 77 | ''' <summary> |
| 78 | ''' |
| 79 | ''' </summary> |
| 80 | ''' <param name="stream"> |
| 81 | ''' 必须要能够支持<see cref="Stream.Length"/>,对于有些网络服务器的HttpResponseStream可能不支持 |
| 82 | ''' <see cref="Stream.Length"/>的话,这个函数将会报错 |
| 83 | ''' </param> |
| 84 | ''' <param name="path$"></param> |
| 85 | ''' <returns></returns> |
| 86 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
| 87 | <Extension> |
| 88 | Public Function FlushStream(stream As Stream, path$) As Boolean |
| 89 | Dim buffer As Byte() = New Byte(stream.Length - 1) {} |
| 90 | Call stream.Read(buffer, Scan0, stream.Length) |
| 91 | Return buffer.FlushStream(path) |
| 92 | End Function |
| 93 | |
| 94 | ''' <summary> |
| 95 | ''' 将指定的字符串的数据值写入到目标可写的输出流之中 |
| 96 | ''' </summary> |
| 97 | ''' <param name="data$">所需要写入的字符串数据</param> |
| 98 | ''' <param name="out">输出流</param> |
| 99 | ''' |
| 100 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
| 101 | <Extension> |
| 102 | Public Sub FlushTo(data$, out As StreamWriter) |
| 103 | Call out.WriteLine(data) |
| 104 | End Sub |
| 105 | |
| 106 | ''' <summary> |
| 107 | ''' 为了方便在linux上面使用,这里会处理一下file://这种情况,请注意参数是ByRef引用的 |
| 108 | ''' </summary> |
| 109 | ''' <param name="path$"></param> |
| 110 | ''' <returns></returns> |
| 111 | ''' |
| 112 | <Extension> Public Function FixPath(ByRef path$) As String |
| 113 | If InStr(path, "file://", CompareMethod.Text) = 1 Then |
| 114 | If App.IsMicrosoftPlatform AndAlso InStr(path, "file:///", CompareMethod.Text) = 1 Then |
| 115 | path = Mid(path, 9) |
| 116 | Else |
| 117 | path = Mid(path, 8) |
| 118 | End If |
| 119 | Else |
| 120 | path = FileIO.FileSystem.GetFileInfo(path).FullName |
| 121 | End If |
| 122 | |
| 123 | Return path$ |
| 124 | End Function |
| 125 | |
| 126 | ''' <summary> |
| 127 | ''' Read target text file as a numeric vector, each line in the target text file should be a number, |
| 128 | ''' so that if the target text file have n lines, then the returned vector have n elements. |
| 129 | ''' (这个文本文件之中的每一行都是一个数字,所以假设这个文本文件有n行,那么所返回的向量的长度就是n) |
| 130 | ''' </summary> |
| 131 | ''' <param name="path">The file path of the target text file.</param> |
| 132 | ''' <returns></returns> |
| 133 | ''' |
| 134 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
| 135 | <Extension> |
| 136 | Public Function ReadVector(path As String) As Double() |
| 137 | Return File.ReadAllLines(path) _ |
| 138 | .Select(Function(x) CDbl(x)) _ |
| 139 | .ToArray |
| 140 | End Function |
| 141 | |
| 142 | ''' <summary> |
| 143 | ''' Safe open a local file handle. |
| 144 | ''' (打开本地文件指针,这是一个安全的函数,会自动创建不存在的文件夹。这个函数默认是写模式的) |
| 145 | ''' </summary> |
| 146 | ''' <param name="path">文件的路径</param> |
| 147 | ''' <param name="mode">File open mode, default is create a new file.(文件指针的打开模式)</param> |
| 148 | ''' <param name="doClear"> |
| 149 | ''' By default is clear all of the data in source file. |
| 150 | ''' (写模式下默认将原来的文件数据清空) |
| 151 | ''' 是否将原来的文件之中的数据清空?默认是,否则将会以追加模式工作 |
| 152 | ''' </param> |
| 153 | ''' <returns></returns> |
| 154 | <ExportAPI("Open.File")> |
| 155 | <Extension> |
| 156 | Public Function Open(path$, Optional mode As FileMode = FileMode.OpenOrCreate, Optional doClear As Boolean = True) As FileStream |
| 157 | With path.ParentPath |
| 158 | If Not .DirectoryExists Then |
| 159 | Call .MkDIR() |
| 160 | End If |
| 161 | End With |
| 162 | |
| 163 | If doClear Then |
| 164 | ' 在这里调用FlushStream函数的话会导致一个循环引用的问题 |
| 165 | Call ClearFileBytes(path) |
| 166 | End If |
| 167 | |
| 168 | Return File.Open(path, mode) |
| 169 | End Function |
| 170 | |
| 171 | ''' <summary> |
| 172 | ''' 将文件之中的所有数据都清空 |
| 173 | ''' </summary> |
| 174 | ''' <param name="path"></param> |
| 175 | Public Sub ClearFileBytes(path As String) |
| 176 | Call IO.File.WriteAllBytes(path, New Byte() {}) |
| 177 | End Sub |
| 178 | |
| 179 | ''' <summary> |
| 180 | ''' Open a text file and returns its file handle. |
| 181 | ''' </summary> |
| 182 | ''' <param name="path"></param> |
| 183 | ''' <param name="encoding">使用系统默认的编码方案</param> |
| 184 | ''' <returns></returns> |
| 185 | ''' |
| 186 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
| 187 | <ExportAPI("Open.Reader")> |
| 188 | <Extension> |
| 189 | Public Function OpenReader(path$, Optional encoding As Encoding = Nothing) As StreamReader |
| 190 | Return New StreamReader(IO.File.Open(path, FileMode.OpenOrCreate), encoding Or UTF8) |
| 191 | End Function |
| 192 | |
| 193 | ''' <summary> |
| 194 | ''' <see cref="IO.File.ReadAllBytes"/>, if the file is not exists on the filesystem, then a empty array will be return. |
| 195 | ''' </summary> |
| 196 | ''' <param name="path"></param> |
| 197 | ''' <returns></returns> |
| 198 | <Extension> |
| 199 | Public Function ReadBinary(path As String) As Byte() |
| 200 | If Not path.FileExists Then |
| 201 | Return {} |
| 202 | Else |
| 203 | Return File.ReadAllBytes(path) |
| 204 | End If |
| 205 | End Function |
| 206 | |
| 207 | ''' <summary> |
| 208 | ''' Write all object into a text file by using its <see cref="Object.ToString"/> method. |
| 209 | ''' </summary> |
| 210 | ''' <typeparam name="T"></typeparam> |
| 211 | ''' <param name="data"></param> |
| 212 | ''' <param name="saveTo"></param> |
| 213 | ''' <param name="encoding"></param> |
| 214 | ''' <returns></returns> |
| 215 | ''' |
| 216 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
| 217 | <Extension> Public Function FlushAllLines(Of T)(data As IEnumerable(Of T), saveTo$, Optional encoding As Encodings = Encodings.Default) As Boolean |
| 218 | Return data.FlushAllLines(saveTo, encoding.CodePage) |
| 219 | End Function |
| 220 | |
| 221 | ''' <summary> |
| 222 | ''' Save the binary data into the filesystem.(保存二进制数据包值文件系统) |
| 223 | ''' </summary> |
| 224 | ''' <param name="buf">The binary bytes data of the target package's data.(目标二进制数据)</param> |
| 225 | ''' <param name="path">The saved file path of the target binary data chunk.(目标二进制数据包所要进行保存的文件名路径)</param> |
| 226 | ''' <returns></returns> |
| 227 | ''' <remarks></remarks> |
| 228 | ''' |
| 229 | <ExportAPI("FlushStream")> |
| 230 | <Extension> Public Function FlushStream(buf As IEnumerable(Of Byte), <Parameter("Path.Save")> path$) As Boolean |
| 231 | Using write As New BinaryWriter(path.Open) |
| 232 | For Each b As Byte In buf |
| 233 | Call write.Write(b) |
| 234 | Next |
| 235 | End Using |
| 236 | |
| 237 | Return True |
| 238 | End Function |
| 239 | |
| 240 | <ExportAPI("FlushStream")> |
| 241 | <Extension> Public Function FlushStream(stream As Net.Protocols.ISerializable, savePath$) As Boolean |
| 242 | Dim rawStream As Byte() = stream.Serialize |
| 243 | If rawStream Is Nothing Then |
| 244 | rawStream = New Byte() {} |
| 245 | End If |
| 246 | Return rawStream.FlushStream(savePath) |
| 247 | End Function |
| 248 | End Module |