/// <summary>
/// Creates a new bundle and returns a bundle context to add files to it
/// </summary>
/// <param name="bundleName"></param>
/// <returns></returns>
/// <remarks>
/// The bundle is write once - so if it already exists, a noop context is returned that does nothing
/// </remarks>
public ISmidgeRequire CreateJsBundle(string bundleName)
{
if (string.IsNullOrWhiteSpace(bundleName))
{
throw new ArgumentNullException(nameof(bundleName));
}
if (_bundleManager.Exists(bundleName))
{
return(new NoopSmidgeRequire());
}
return(new SmidgeRequire(bundleName, _bundleManager, WebFileType.Js, _requestHelper));
}
public override async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
{
// Pass through attribute that is also a well-known HTML attribute.
// this is required to make sure that other tag helpers executing against this element have
// the value copied across
if (Source != null)
{
output.CopyHtmlAttribute("src", context);
}
if (_bundleManager.Exists(Source))
{
var result = (await _smidgeHelper.GenerateJsUrlsAsync(Source, Debug)).ToArray();
var currAttr = output.Attributes.ToDictionary(x => x.Name, x => x.Value);
using (var writer = new StringWriter())
{
foreach (var s in result)
{
var builder = new TagBuilder(output.TagName)
{
TagRenderMode = TagRenderMode.Normal
};
builder.MergeAttributes(currAttr);
builder.Attributes["src"] = s;
builder.WriteTo(writer, _encoder);
}
writer.Flush();
output.PostElement.SetHtmlContent(new HtmlString(writer.ToString()));
}
//This ensures the original tag is not written.
output.TagName = null;
}
}
// only issue with creating bundles like this is that we don't have full control over the bundle options, though that could
public void CreateCssBundle(string bundleName, BundlingOptions bundleOptions, params string[]?filePaths)
{
if (filePaths?.Any(f => !f.StartsWith("/") && !f.StartsWith("~/")) ?? false)
{
throw new InvalidOperationException("All file paths must be absolute");
}
if (_bundles.Exists(bundleName))
{
throw new InvalidOperationException($"The bundle name {bundleName} already exists");
}
PreProcessPipeline pipeline = bundleOptions.OptimizeOutput
? _cssOptimizedPipeline.Value
: _cssNonOptimizedPipeline.Value;
Bundle bundle = _bundles.Create(bundleName, pipeline, WebFileType.Css, filePaths);
bundle.WithEnvironmentOptions(ConfigureBundleEnvironmentOptions(bundleOptions));
}