public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
string id = (value as string);
PackageId result;
return((id != null && PackageId.TryParse(id, out result)) ? result : base.ConvertFrom(context, culture, value));
}
/// <summary>
/// Tries to convert a given string into a valid target
/// </summary>
/// <param name="value">A string in <owner>.<namespace>.<name>@<version> format</param>
/// <returns>True if parsing the string was successful, false otherwise</returns>
public static bool TryParse(string value, out PackageTarget result)
{
result = new PackageTarget();
StringBuilder textBuffer = new StringBuilder(value);
for (int i = 0; i <= textBuffer.Length; i++)
{
string buffer;
if (i == textBuffer.Length)
{
buffer = textBuffer.ToString().Trim();
textBuffer.Clear();
}
else if (textBuffer[i] == '@')
{
buffer = textBuffer.ToString(0, i).Trim();
textBuffer.Remove(0, i + 1);
}
else
{
continue;
}
PackageId tmp; if (PackageId.TryParse(buffer, out tmp))
{
result.id = tmp;
break;
}
else
{
return(false);
}
}
if (textBuffer.Length > 0)
{
result.version = PackageVersion.Create(textBuffer.ToString().Trim());
if (!result.version.IsValid)
{
return(false);
}
}
return(result.id.IsValid);
}