1 | #Region "Microsoft.VisualBasic::dd2a158234e426a88e2e3a25a1b611e3, Microsoft.VisualBasic.Core\Extensions\IO\Extensions\Extensions.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 Extensions |
35 | ' |
36 | ' Function: FlushAllLines, OpenWriter |
37 | ' |
38 | ' |
39 | ' /********************************************************************************/ |
40 | |
41 | #End Region |
42 | |
43 | Imports System.IO |
44 | Imports System.Runtime.CompilerServices |
45 | Imports System.Text |
46 | Imports Microsoft.VisualBasic.Language |
47 | Imports Microsoft.VisualBasic.Text |
48 | |
49 | Namespace FileIO |
50 | |
51 | ''' <summary> |
52 | ''' |
53 | ''' </summary> |
54 | ''' <remarks> |
55 | ''' <see cref="Encoding"/>会和<see cref="Encodings"/>产生冲突, |
56 | ''' 使用这个单独的拓展模块,但是位于不同的命名空间来解决这个问题。 |
57 | ''' </remarks> |
58 | Public Module Extensions |
59 | |
60 | ''' <summary> |
61 | ''' Write all object into a text file by using its <see cref="Object.ToString"/> method. |
62 | ''' </summary> |
63 | ''' <typeparam name="T"></typeparam> |
64 | ''' <param name="data"></param> |
65 | ''' <param name="saveTo"></param> |
66 | ''' <param name="encoding"></param> |
67 | ''' <returns></returns> |
68 | <Extension> Public Function FlushAllLines(Of T)(data As IEnumerable(Of T), saveTo$, Optional encoding As Encoding = Nothing) As Boolean |
69 | Dim strings As IEnumerable(Of String) = |
70 | data.Select(AddressOf Scripting.ToString) |
71 | Dim parent$ = FileSystem.GetParentPath(saveTo) |
72 | |
73 | Call parent.MkDIR |
74 | |
75 | If encoding Is Nothing Then |
76 | encoding = Encoding.Default |
77 | End If |
78 | |
79 | Try |
80 | Using writer As StreamWriter = saveTo.OpenWriter(encoding,) |
81 | For Each line As String In strings |
82 | Call writer.WriteLine(line) |
83 | Next |
84 | End Using |
85 | Catch ex As Exception |
86 | Call App.LogException(New Exception(saveTo, ex)) |
87 | Return False |
88 | End Try |
89 | |
90 | Return True |
91 | End Function |
92 | |
93 | ''' <summary> |
94 | ''' Open text file writer, this function will auto handle all things. |
95 | ''' </summary> |
96 | ''' <param name="path">假若路径是指向一个已经存在的文件,则原有的文件数据将会被清空</param> |
97 | ''' <param name="encoding"></param> |
98 | ''' <returns></returns> |
99 | <Extension> |
100 | Public Function OpenWriter(path$, |
101 | Optional encoding As Encoding = Nothing, |
102 | Optional newLine As String = vbLf, |
103 | Optional append As Boolean = False) As StreamWriter |
104 | Dim file As FileStream |
105 | Dim writeNew = Function() |
106 | ' 使用最基础的ASCII编码,可能会解决一些莫名其妙的文件头出现的bug |
107 | Call "".SaveTo(path, Encoding.ASCII) |
108 | Return New FileStream(path, FileMode.OpenOrCreate) |
109 | End Function |
110 | |
111 | If append Then |
112 | With path.ParentPath |
113 | If Not .DirectoryExists Then |
114 | Call .MkDIR |
115 | End If |
116 | |
117 | If path.FileExists Then |
118 | file = New FileStream(path, FileMode.Append) |
119 | Else |
120 | file = writeNew() |
121 | End If |
122 | End With |
123 | Else |
124 | file = writeNew() |
125 | End If |
126 | |
127 | Dim writer As New StreamWriter(file, encoding Or UTF8, bufferSize:=App.BufferSize) With { |
128 | .NewLine = newLine Or vbLf.AsDefault |
129 | } |
130 | |
131 | Return writer |
132 | End Function |
133 | End Module |
134 | End Namespace |