private static IEnumerable<FeatureDescriptor> GetFeaturesForExtension(IDictionary<string, string> manifest, ExtensionDescriptor extensionDescriptor)
{
var featureDescriptors = new List<FeatureDescriptor>();
// Default feature
FeatureDescriptor defaultFeature = new FeatureDescriptor {
Id = extensionDescriptor.Id,
Name = GetValue(manifest, FeatureNameSection) ?? extensionDescriptor.Name,
Priority = GetValue(manifest, PrioritySection) != null ? int.Parse(GetValue(manifest, PrioritySection)) : 0,
Description = GetValue(manifest, FeatureDescriptionSection) ?? GetValue(manifest, DescriptionSection) ?? string.Empty,
Dependencies = ParseFeatureDependenciesEntry(GetValue(manifest, DependenciesSection)),
Extension = extensionDescriptor,
Category = GetValue(manifest, CategorySection)
};
featureDescriptors.Add(defaultFeature);
// Remaining features
string featuresText = GetValue(manifest, FeaturesSection);
if (featuresText != null) {
FeatureDescriptor featureDescriptor = null;
using (StringReader reader = new StringReader(featuresText)) {
string line;
while ((line = reader.ReadLine()) != null) {
if (IsFeatureDeclaration(line)) {
if (featureDescriptor != null) {
if (!featureDescriptor.Equals(defaultFeature)) {
featureDescriptors.Add(featureDescriptor);
}
featureDescriptor = null;
}
string[] featureDeclaration = line.Split(new[] { ":" }, StringSplitOptions.RemoveEmptyEntries);
string featureDescriptorId = featureDeclaration[0].Trim();
if (String.Equals(featureDescriptorId, extensionDescriptor.Id, StringComparison.OrdinalIgnoreCase)) {
featureDescriptor = defaultFeature;
featureDescriptor.Name = extensionDescriptor.Name;
}
else {
featureDescriptor = new FeatureDescriptor {
Id = featureDescriptorId,
Extension = extensionDescriptor
};
}
}
else if (IsFeatureFieldDeclaration(line)) {
if (featureDescriptor != null) {
string[] featureField = line.Split(new[] { ":" }, 2, StringSplitOptions.None);
int featureFieldLength = featureField.Length;
if (featureFieldLength != 2)
continue;
for (int i = 0; i < featureFieldLength; i++) {
featureField[i] = featureField[i].Trim();
}
switch (featureField[0].ToLowerInvariant()) {
case NameSection:
featureDescriptor.Name = featureField[1];
break;
case DescriptionSection:
featureDescriptor.Description = featureField[1];
break;
case CategorySection:
featureDescriptor.Category = featureField[1];
break;
case PrioritySection:
featureDescriptor.Priority = int.Parse(featureField[1]);
break;
case DependenciesSection:
featureDescriptor.Dependencies = ParseFeatureDependenciesEntry(featureField[1]);
break;
}
}
else {
string message = string.Format("The line {0} in manifest for extension {1} was ignored", line, extensionDescriptor.Id);
throw new ArgumentException(message);
}
}
else {
string message = string.Format("The line {0} in manifest for extension {1} was ignored", line, extensionDescriptor.Id);
throw new ArgumentException(message);
}
}
if (featureDescriptor != null && !featureDescriptor.Equals(defaultFeature))
featureDescriptors.Add(featureDescriptor);
}
}
return featureDescriptors;
}
internal static int GetPriority(FeatureDescriptor featureDescriptor)
{
return featureDescriptor.Priority;
}
/// <summary>
/// Returns true if the item has an explicit or implicit dependency on the subject
/// </summary>
/// <param name="item"></param>
/// <param name="subject"></param>
/// <returns></returns>
internal static bool HasDependency(FeatureDescriptor item, FeatureDescriptor subject)
{
if (DefaultExtensionTypes.IsTheme(item.Extension.ExtensionType)) {
if (DefaultExtensionTypes.IsModule(subject.Extension.ExtensionType)) {
// Themes implicitly depend on modules to ensure build and override ordering
return true;
}
if (DefaultExtensionTypes.IsTheme(subject.Extension.ExtensionType)) {
// Theme depends on another if it is its base theme
return item.Extension.BaseTheme == subject.Id;
}
}
// Return based on explicit dependencies
return item.Dependencies != null &&
item.Dependencies.Any(x => StringComparer.OrdinalIgnoreCase.Equals(x, subject.Id));
}
private Feature LoadFeature(FeatureDescriptor featureDescriptor)
{
var extensionDescriptor = featureDescriptor.Extension;
var featureId = featureDescriptor.Id;
var extensionId = extensionDescriptor.Id;
ExtensionEntry extensionEntry;
try {
extensionEntry = BuildEntry(extensionDescriptor);
}
catch (Exception ex) {
_logger.LogError(string.Format("Error loading extension '{0}'", extensionId), ex);
throw new OrchardException(T("Error while loading extension '{0}'.", extensionId), ex);
}
if (extensionEntry == null) {
// If the feature could not be compiled for some reason,
// return a "null" feature, i.e. a feature with no exported types.
return new Feature {
Descriptor = featureDescriptor,
ExportedTypes = Enumerable.Empty<Type>()
};
}
var extensionTypes = extensionEntry.ExportedTypes.Where(t => t.GetTypeInfo().IsClass && !t.GetTypeInfo().IsAbstract);
var featureTypes = new List<Type>();
foreach (var type in extensionTypes) {
string sourceFeature = GetSourceFeatureNameForType(type, extensionId);
if (String.Equals(sourceFeature, featureId, StringComparison.OrdinalIgnoreCase)) {
featureTypes.Add(type);
}
}
return new Feature {
Descriptor = featureDescriptor,
ExportedTypes = featureTypes
};
}
