1 | #Region "Microsoft.VisualBasic::a601e76aef37afbfcceef80194b0269d, Microsoft.VisualBasic.Core\Extensions\IO\Extensions\StreamHelper.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 StreamHelper |
35 | ' |
36 | ' Function: CopyStream |
37 | ' |
38 | ' Sub: Write, WriteLine |
39 | ' |
40 | ' /********************************************************************************/ |
41 | |
42 | #End Region |
43 | |
44 | Imports System.IO |
45 | Imports System.Runtime.CompilerServices |
46 | Imports System.Text |
47 | Imports Microsoft.VisualBasic.CommandLine.Reflection |
48 | Imports Microsoft.VisualBasic.Language |
49 | Imports Microsoft.VisualBasic.Text |
50 | |
51 | Public Module StreamHelper |
52 | |
53 | ''' <summary> |
54 | ''' Download stream data from the http response. |
55 | ''' </summary> |
56 | ''' <param name="stream"> |
57 | ''' Create from <see cref="WebServiceUtils.GetRequestRaw(String, Boolean, String)"/> |
58 | ''' </param> |
59 | ''' <returns></returns> |
60 | <ExportAPI("Stream.Copy", Info:="Download stream data from the http response.")> |
61 | <Extension> Public Function CopyStream(stream As Stream, Optional target As Stream = Nothing, Optional bufferSize% = 64 * 1024) As Stream |
62 | If stream Is Nothing Then |
63 | Return If(target, New MemoryStream) |
64 | End If |
65 | |
66 | Dim buffer As Byte() = New Byte(bufferSize - 1) {} |
67 | Dim i As int = Scan0 |
68 | |
69 | With target Or DirectCast(New MemoryStream(), Stream).AsDefault |
70 | Do While (i = stream.Read(buffer, 0, buffer.Length)) > 0 |
71 | Call .Write(buffer, 0, i) |
72 | Loop |
73 | |
74 | Return .ByRef |
75 | End With |
76 | End Function |
77 | |
78 | <Extension> |
79 | Public Sub Write(stream As Stream, value$, Optional encoding As Encoding = Nothing) |
80 | With (encoding Or UTF8).GetBytes(value) |
81 | Call stream.Write(.ByRef, Scan0, .Length) |
82 | Call stream.Flush() |
83 | End With |
84 | End Sub |
85 | |
86 | <MethodImpl(MethodImplOptions.AggressiveInlining)> |
87 | <Extension> |
88 | Public Sub WriteLine(stream As Stream, Optional value$ = "", Optional encoding As Encoding = Nothing, Optional newLine$ = vbCrLf) |
89 | Call stream.Write(value & newLine, encoding) |
90 | End Sub |
91 | End Module |