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using System;
namespace Xamarin.Forms.Xaml
{
internal static class XmlnsHelper
{
public static bool IsCustom(string ns)
{
switch (ns)
{
case "":
case "http://xamarin.com/schemas/2014/forms":
return false;
}
return true;
}
public static string ParseNamespaceFromXmlns(string xmlns)
{
string typeName;
string ns;
string asm;
string targetPlatform;
ParseXmlns(xmlns, out typeName, out ns, out asm, out targetPlatform);
return ns;
}
public static void ParseXmlns(string xmlns, out string typeName, out string ns, out string asm, out string targetPlatform)
{
typeName = ns = asm = targetPlatform = null;
foreach (var decl in xmlns.Split(';'))
{
if (decl.StartsWith("clr-namespace:", StringComparison.Ordinal))
{
ns = decl.Substring(14, decl.Length - 14);
continue;
}
if (decl.StartsWith("assembly=", StringComparison.Ordinal))
{
asm = decl.Substring(9, decl.Length - 9);
continue;
}
if (decl.StartsWith("targetPlatform=", StringComparison.Ordinal)) {
targetPlatform = decl.Substring(15, decl.Length - 15);
continue;
}
var nsind = decl.LastIndexOf(".", StringComparison.Ordinal);
if (nsind > 0)
{
ns = decl.Substring(0, nsind);
typeName = decl.Substring(nsind + 1, decl.Length - nsind - 1);
}
else
typeName = decl;
}
}
}
}
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