protected virtual async Task AggregateAsync(IBundleTransformContext context, IReadOnlyList <IBundleTransform> transforms)
{
if (transforms != null)
{
for (int i = 0, n = transforms.Count; i < n; i++)
{
if (transforms[i] is IAggregatorBundleTransform aggregatorTransform)
{
await aggregatorTransform.AggregateAsync(context);
if (context.Content != null)
{
return;
}
aggregatorTransform.Aggregate(context);
if (context.Content != null)
{
return;
}
}
}
}
// falling back to simple concatenation when aggregation was not handled by the transforms
context.Content = string.Join(context.BuildContext.Bundle.ConcatenationToken, context.TransformedItemContexts.Select(itemContext => itemContext.Content));
}
public override async Task AggregateAsync(IBundleTransformContext context)
{
IModuleBundler bundler = _moduleBundlerFactory.Create(_options);
ModuleFile[] rootFiles = context.TransformedItemContexts
.Select((itemContext, i) =>
itemContext is IFileBundleItemTransformContext fileItemContext ?
new ModuleFile(fileItemContext.FileProvider, fileItemContext.FilePath, fileItemContext.CaseSensitiveFilePaths)
{
Content = fileItemContext.Content
} :
new ModuleFile()
{
Content = itemContext.Content
})
.ToArray();
ModuleBundlingResult result = await bundler.BundleAsync(rootFiles, context.BuildContext.CancellationToken);
context.Content = result.Content ?? string.Empty;
if (result.Imports != null && result.Imports.Count > 0)
{
context.BuildContext.ChangeSources?.UnionWith(result.Imports);
}
}
protected virtual async Task <string> ApplyTransformsAsync(IBundleTransformContext context, IReadOnlyList <IBundleTransform> transforms)
{
if (transforms != null)
{
for (int i = 0, n = transforms.Count; i < n; i++)
{
context.BuildContext.CancellationToken.ThrowIfCancellationRequested();
IBundleTransform transform = transforms[i];
await transform.TransformAsync(context);
transform.Transform(context);
}
}
return(context.Content);
}
public virtual Task AggregateAsync(IBundleTransformContext context)
{
return(Task.CompletedTask);
}
public virtual void Aggregate(IBundleTransformContext context)
{
}
public virtual void Transform(IBundleTransformContext context)
{
}
public override void Transform(IBundleTransformContext context)
{
var filePath = context is IFileBundleItemTransformContext fileItemContext ? fileItemContext.FilePath : null;
context.Content = _minifier.Process(context.Content, filePath);
}
