127 lines
4.6 KiB
VB.net
127 lines
4.6 KiB
VB.net
#Region "Microsoft.VisualBasic::73ec576aa7efd1e7c755d62144fc32f4, Microsoft.VisualBasic.Core\Text\Xml\Linq\DeserializeHandler.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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' Class DeserializeHandler
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'
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' Properties: ReplaceXmlns
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'
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' Constructor: (+1 Overloads) Sub New
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' Function: LoadXml, RemoveXmlns, ToString
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'
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'
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' /********************************************************************************/
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#End Region
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Imports System.Runtime.CompilerServices
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Imports System.Text
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Imports System.Xml.Serialization
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Namespace Text.Xml.Linq
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''' <summary>
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''' The xml deserialize helper
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''' </summary>
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Public Class DeserializeHandler(Of T As Class)
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ReadOnly process As Func(Of String, String)
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''' <summary>
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''' Get type name that defined on the class type decoration with custom attributes:
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''' <see cref="XmlTypeAttribute"/> or <see cref="XmlRootAttribute"/>
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''' </summary>
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ReadOnly Tname$ = GetType(T).GetNodeNameDefine
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Public Property ReplaceXmlns As String
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Sub New(xmlNode As String)
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' 2017-12-22
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' 假若对象是存储在一个数组之中的，那么，可能会出现的一种情况就是
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' 在类型的定义之中，使用了xmlelement重新定义了节点的名字
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' 例如 <XmlElement("A")>
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' 那么在生成的XML文件之中的节点名称就是A
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' 但是元素A的类型定义却是 Public Class B ... End Class
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' 因为A不等于B，所以将无法正确的加载XML节点数据
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' 在这里进行名称的替换来消除这种错误
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If Tname = xmlNode Then
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' 不需要进行替换
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process = Function(s) s
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Else
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Dim leftTag% = 1 + xmlNode.Length
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Dim rightTag% = 3 + xmlNode.Length
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' 在这里不尝试做直接替换，可能会误杀其他的节点
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process = Function(block)
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block = block.Trim(ASCII.CR, ASCII.LF, " "c, ASCII.TAB)
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block = block.Substring(leftTag, block.Length - leftTag)
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block = block.Substring(0, block.Length - rightTag)
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block = "<" & Tname & block & "</" & Tname & ">"
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Return block
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End Function
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End If
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End Sub
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ReadOnly sb As New StringBuilder
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Public Function RemoveXmlns(xml As String) As String
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Return xml.Replace($"xmlns=""{ReplaceXmlns}""", "")
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End Function
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''' <summary>
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''' This method have bugs when deal with the xml when it have
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''' multiple xml namespace value
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''' </summary>
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''' <param name="xml"></param>
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''' <returns></returns>
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Public Function LoadXml(xml As String) As T
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Call sb.Clear()
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Call sb.AppendLine("<?xml version=""1.0"" encoding=""utf-16""?>")
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Call sb.AppendLine(process(xml))
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If Not ReplaceXmlns.StringEmpty Then
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Call sb.Replace($"xmlns=""{ReplaceXmlns}""", "")
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End If
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xml = sb.ToString
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' 对调整好的Xml文档执行反序列化操作
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Return xml.LoadFromXml(Of T)(doNamespaceIgnorant:=True)
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End Function
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Public Overrides Function ToString() As String
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Return $"LoadXml(Of {Tname})"
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End Function
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End Class
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End Namespace
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