删除 Silverlight 中的变音符号(String.Normalize 问题)
-
27-09-2019 - |
题
我确实创建了一个将变音符号字符转换为非变音符号字符的函数(基于此 邮政)
代码如下:
Public Function RemoveDiacritics(ByVal searchInString As String) As String
Dim returnValue As String = ""
Dim formD As String = searchInString.Normalize(System.Text.NormalizationForm.FormD)
Dim unicodeCategory As System.Globalization.UnicodeCategory = Nothing
Dim stringBuilder As New System.Text.StringBuilder()
For formScan As Integer = 0 To formD.Length - 1
unicodeCategory = System.Globalization.CharUnicodeInfo.GetUnicodeCategory(formD(formScan))
If unicodeCategory <> System.Globalization.UnicodeCategory.NonSpacingMark Then
stringBuilder.Append(formD(formScan))
End If
Next
returnValue = stringBuilder.ToString().Normalize(System.Text.NormalizationForm.FormC)
Return returnValue
End Function
不幸的是,由于 String.Normlize 不是 Silverlight 的一部分,我需要找到其他方法来编写此函数。
到目前为止,我找到的唯一解决方案是在服务器端创建一个服务,该服务将调用 String.Normalize 函数,然后将其返回到客户端......但这会产生巨大的性能问题。
一定有更好的选择,但我知道我不知道如何解决这个问题。
解决方案 2
感谢您的回答吉姆,但我尝试像 Mono 项目那样实现规范化类,并且在某一时刻,我意识到这是一种矫枉过正,因为对于应该简单的事情涉及太多依赖项。
我想出了这个简单的实现......我知道它并不完美(这并不适用于每种语言),但它会为我完成这项工作,直到 MS 发布支持字符串规范化的 Silverlight 版本。
<System.Runtime.CompilerServices.Extension()> _
Public Function RemoveDiacritics(ByVal searchInString As String) As String
Dim returnValue As String = ""
returnValue = searchInString
returnValue = returnValue.ReplaceLowerAndUpperCase("À", "A")
returnValue = returnValue.ReplaceLowerAndUpperCase("Á", "A")
returnValue = returnValue.ReplaceLowerAndUpperCase("Â", "A")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ã", "A")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ä", "A")
returnValue = returnValue.ReplaceLowerAndUpperCase("Å", "A")
returnValue = returnValue.ReplaceLowerAndUpperCase("Æ", "A")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ç", "C")
returnValue = returnValue.ReplaceLowerAndUpperCase("È", "E")
returnValue = returnValue.ReplaceLowerAndUpperCase("É", "E")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ê", "E")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ë", "E")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ì", "I")
returnValue = returnValue.ReplaceLowerAndUpperCase("Í", "I")
returnValue = returnValue.ReplaceLowerAndUpperCase("Î", "I")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ï", "I")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ñ", "N")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ò", "O")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ó", "O")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ô", "O")
returnValue = returnValue.ReplaceLowerAndUpperCase("Õ", "O")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ö", "O")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ù", "U")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ú", "U")
returnValue = returnValue.ReplaceLowerAndUpperCase("Û", "U")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ü", "U")
returnValue = returnValue.ReplaceLowerAndUpperCase("Ý", "Y")
returnValue = returnValue.ReplaceLowerAndUpperCase("Æ", "AE")
returnValue = returnValue.ReplaceLowerAndUpperCase("Œ", "OE")
Return returnValue
End Function
<System.Runtime.CompilerServices.Extension()> _
Public Function ReplaceLowerAndUpperCase(ByVal searchInString As String, ByVal oldString As String, ByVal newString As String) As String
Dim returnValue As String = ""
returnValue = searchInString.Replace(oldString.ToLower, newString.ToLower)
returnValue = returnValue.Replace(oldString.ToUpper, newString.ToUpper)
Return returnValue
End Function
其他提示
西蒙,
下面是 Normalize() 的基本实现,调用 Normalization 类:
public string Normalize ()
{
return Normalization.Normalize (this, 0);
}
public string Normalize (NormalizationForm normalizationForm)
{
switch (normalizationForm)
{
default:
return Normalization.Normalize (this, 0);
case NormalizationForm.FormD:
return Normalization.Normalize (this, 1);
case NormalizationForm.FormKC:
return Normalization.Normalize (this, 2);
case NormalizationForm.FormKD:
return Normalization.Normalize (this, 3);
}
}
您可以从 GitHub 上的 Mono 项目浏览 Normalization 类的实现:
祝你好运,
吉姆·麦柯迪
不隶属于 StackOverflow