117 lines
3.9 KiB
VB.net
117 lines
3.9 KiB
VB.net
#Region "Microsoft.VisualBasic::27027b5df5b26c037d3512bb2a33963e, Microsoft.VisualBasic.Core\Text\Xml\XmlDeclaration.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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' Enum XmlEncodings
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'
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'
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'
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'
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'
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'
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' Structure XmlDeclaration
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'
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' Properties: [Default]
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'
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' Constructor: (+1 Overloads) Sub New
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' Function: EncodingParser, ToString, XmlStandaloneString
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'
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'
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' /********************************************************************************/
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#End Region
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Imports System.ComponentModel
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Imports System.Text.RegularExpressions
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Imports Microsoft.VisualBasic.Language.Default
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Imports r = System.Text.RegularExpressions.Regex
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Namespace Text.Xml
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Public Enum XmlEncodings
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<Description("utf-8")> UTF8
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<Description("utf-16")> UTF16
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<Description("gb2312")> GB2312
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End Enum
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Public Structure XmlDeclaration
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Public version As String
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Public standalone As Boolean
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Public encoding As XmlEncodings
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Sub New(declares As String)
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Dim s As String
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s = r.Match(declares, "encoding=""\S+""", RegexICSng).Value
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encoding = EncodingParser(s.GetStackValue("""", """"))
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s = r.Match(declares, "standalone=""\S+""", RegexICSng).Value
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standalone = s.GetStackValue("""", """").ParseBoolean
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s = r.Match(declares, "version=""\S+""", RegexICSng).Value
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version = s.GetStackValue("""", """")
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End Sub
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Public Shared ReadOnly Property [Default] As New XmlDeclaration With {
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.version = defaultVersion1_0,
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.standalone = True,
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.encoding = XmlEncodings.UTF16
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}
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Shared ReadOnly defaultVersion1_0 As [Default](Of String) = "1.0"
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''' <summary>
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''' <?xml version="{<see cref="version"/>}" encoding="{<see cref="encoding"/>}" standalone="{<see cref="standalone"/>}"?>
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''' </summary>
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''' <returns></returns>
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Public Overrides Function ToString() As String
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Dim attr As New Dictionary(Of String, String) From {
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{"version", version Or defaultVersion1_0},
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{"encoding", encoding.Description},
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{"standalone", XmlStandaloneString(standalone)}
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}
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Return $"<?xml {attr.Select(Function(a) $"{a.Key}=""{a.Value}""").JoinBy(" ")} ?>"
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End Function
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Public Shared Function EncodingParser(enc As String) As XmlEncodings
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If String.Equals(enc, "utf-8", StringComparison.OrdinalIgnoreCase) Then
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Return XmlEncodings.UTF8
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Else
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Return XmlEncodings.UTF16
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End If
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End Function
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Public Shared Function XmlStandaloneString(standalone As Boolean) As String
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Return If(standalone, "yes", "no")
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End Function
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End Structure
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End Namespace
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