public static IEnumerable<FrameworkName> SelectFrameworks(Runtime.Project project,
IEnumerable<string> userSelection,
FrameworkName fallbackFramework,
out string errorMessage)
{
var specifiedFrameworks = userSelection.ToDictionary(f => f, FrameworkNameHelper.ParseFrameworkName);
var projectFrameworks = new HashSet<FrameworkName>(
project.GetTargetFrameworks()
.Select(c => c.FrameworkName));
IEnumerable<FrameworkName> frameworks = null;
if (projectFrameworks.Count > 0)
{
// Specified target frameworks have to be a subset of the project frameworks
if (!ValidateFrameworks(projectFrameworks, specifiedFrameworks, out errorMessage))
{
return null;
}
frameworks = specifiedFrameworks.Count > 0 ? specifiedFrameworks.Values : (IEnumerable<FrameworkName>)projectFrameworks;
}
else
{
frameworks = new[] { fallbackFramework };
}
errorMessage = string.Empty;
return frameworks;
}
private void ApplyTargetFramework(XDocument xDoc, Runtime.Project project)
{
// Get the system.web element
var systemWeb = GetOrAddElement(xDoc.Root, "system.web");
var httpRuntime = systemWeb.Element("httpRuntime");
// No httpRuntime element, so create it
if (httpRuntime == null)
{
httpRuntime = new XElement("httpRuntime");
systemWeb.Add(httpRuntime);
}
// There is an httpRuntime element. The user may have already set this attribute...
else if (httpRuntime.Attribute("targetFramework") != null)
{
// User already had a target framework, leave it alone
return;
}
// Ok, now we have an httpRuntime element and we know we need to set thet targetFramework on it.
var bestDnxVersion = project.GetTargetFrameworks()
.Where(f => f.FrameworkName.Identifier.Equals(FrameworkNames.LongNames.Dnx))
.OrderByDescending(f => f.FrameworkName.Version)
.Select(f => f.FrameworkName.Version)
.FirstOrDefault();
if (bestDnxVersion != null)
{
httpRuntime.SetAttributeValue("targetFramework", bestDnxVersion.ToString());
}
}