public async Task PopulateHtmlTagAsync(ITagBuilderOptions options, ReadOnlyTagHelperAttributeList attributeList, Asset asset, IHtmlContentBuilder output)
{
TagBuilder tagBuilder = null;
var outputMode = options.Output;
if (!this.Options.BundleStylesheets && !this.Options.MinifyStylesheets)
{
outputMode = OptimizationTagOutput.Tag;
}
else if (OptimizationTagOutput.Tag == outputMode && (this.Options.BundleStylesheets || this.Options.MinifyStylesheets))
{
outputMode = OptimizationTagOutput.StaticFile;
}
switch (outputMode)
{
case OptimizationTagOutput.Default: //same as OptimizationTagOutput.Inline
string content = await asset.ReadContentAsStringAsync();
output.AppendHtmlLine($"<style>{content}</style>");
break;
case OptimizationTagOutput.Tag:
tagBuilder = new TagBuilder("link");
tagBuilder.TagRenderMode = TagRenderMode.SelfClosing;
tagBuilder.Attributes.Add("rel", "stylesheet");
tagBuilder.Attributes.Add("type", "text/css");
tagBuilder.Attributes.Add("href", asset.GetWebLocation(this.Options));
output.AppendHtml(tagBuilder);
break;
case OptimizationTagOutput.StaticFile:
case OptimizationTagOutput.Loader:
string webPath = null;
PathString relativeFilePath = new PathString(this.Options.StaticAssetsPath).Add($"/{asset.Name}");
var assetFileInfo = this.HostingEnvironment.WebRootFileProvider.GetFileInfo(relativeFilePath);
if (!assetFileInfo.Exists)
{
content = await asset.ReadContentAsStringAsync();
await File.WriteAllTextAsync(assetFileInfo.PhysicalPath, content, Encoding.UTF8);
}
if (string.IsNullOrWhiteSpace(this.Options.AssetRootUrl))
{
webPath = this.HttpContextAccessor.HttpContext.Request.PathBase.Add(relativeFilePath);
}
else
{
if (!Uri.TryCreate(this.Options.AssetRootUrl, UriKind.Absolute, out Uri cdnRootUri))
{
throw new UriFormatException($"'{this.Options.AssetRootUrl}' is an invalid Uri. An absolute Uri is expected.");
}
Uri.TryCreate(cdnRootUri, $"{asset.Name}", out Uri webPathUri);
webPath = webPathUri.ToString();
}
tagBuilder = new TagBuilder("link");
tagBuilder.TagRenderMode = TagRenderMode.SelfClosing;
tagBuilder.Attributes.Add("rel", "stylesheet");
tagBuilder.Attributes.Add("type", "text/css");
tagBuilder.Attributes.Add("href", webPath);
output.AppendHtml(tagBuilder);
break;
}
}
public async Task PopulateHtmlTagAsync(ITagBuilderOptions options, ReadOnlyTagHelperAttributeList attributeList, Asset asset, IHtmlContentBuilder output)
{
TagBuilder tagBuilder = new TagBuilder("script");
tagBuilder.TagRenderMode = TagRenderMode.Normal;
tagBuilder.Attributes.Add("type", "text/javascript");
if (attributeList.ContainsName("defer"))
{
tagBuilder.Attributes.Add("defer", null);
}
else if (attributeList.ContainsName("async"))
{
tagBuilder.Attributes.Add("async", null);
}
var outputMode = options.Output;
if (!this.Options.BundleJavascripts && !this.Options.MinifyJavascripts && OptimizationTagOutput.Loader != outputMode)
{
outputMode = OptimizationTagOutput.Tag;
}
else if (OptimizationTagOutput.Tag == outputMode && (this.Options.BundleJavascripts || this.Options.MinifyJavascripts))
{
outputMode = OptimizationTagOutput.StaticFile;
}
switch (outputMode)
{
case OptimizationTagOutput.Default: //same as OptimizationTagOutput.Inline
string content = await asset.ReadContentAsStringAsync();
tagBuilder.InnerHtml.SetHtmlContent(content);
break;
case OptimizationTagOutput.Tag:
tagBuilder.Attributes.Add("src", asset.GetWebLocation(this.Options));
if (null != asset?.Content)
{
await asset.Content.DisposeAsync();
}
break;
case OptimizationTagOutput.StaticFile:
case OptimizationTagOutput.Loader:
string webPath = null;
PathString relativeFilePath = new PathString(this.Options.StaticAssetsPath).Add($"/{asset.Name}");
var assetFileInfo = this.HostingEnvironment.WebRootFileProvider.GetFileInfo(relativeFilePath);
if (!assetFileInfo.Exists)
{
content = await asset.ReadContentAsStringAsync();
await File.WriteAllTextAsync(assetFileInfo.PhysicalPath, content, Encoding.UTF8);
}
if (string.IsNullOrWhiteSpace(this.Options.AssetRootUrl))
{
webPath = this.HttpContextAccessor.HttpContext.Request.PathBase.Add(relativeFilePath);
}
else
{
if (!Uri.TryCreate(this.Options.AssetRootUrl, UriKind.Absolute, out Uri cdnRootUri))
{
throw new UriFormatException($"'{this.Options.AssetRootUrl}' is an invalid Uri. An absolute Uri is expected.");
}
Uri.TryCreate(cdnRootUri, $"{asset.Name}", out Uri webPathUri);
webPath = webPathUri.ToString();
}
if (OptimizationTagOutput.StaticFile == outputMode)
{
tagBuilder.Attributes.Add("src", webPath);
}
else
{
tagBuilder.InnerHtml.SetHtmlContent($"adriva.optimization.loader.push('{webPath}', 1)");
}
if (null != asset?.Content)
{
await asset.Content.DisposeAsync();
}
break;
}
output.AppendHtml(tagBuilder);
}
