/// <summary>
/// Gets the Razor page for an input document stream. This is roughly modeled on
/// DefaultRazorPageFactory and CompilerCache. Note that we don't actually bother
/// with caching the page if it's from a live stream.
/// </summary>
private IRazorPage GetPageFromStream(string relativePath, Stream stream,
IFileProvider rootFileProvider, IRazorCompilationService razorCompilationService)
{
if (relativePath.StartsWith("~/", StringComparison.Ordinal))
{
// For tilde slash paths, drop the leading ~ to make it work with the underlying IFileProvider.
relativePath = relativePath.Substring(1);
}
// Get the file info by combining the stream content with info found at the document's original location (if any)
IFileInfo fileInfo = new StreamFileInfo(rootFileProvider.GetFileInfo(relativePath), stream);
RelativeFileInfo relativeFileInfo = new RelativeFileInfo(fileInfo, relativePath);
// Create the compilation
CompilationResult compilationResult = razorCompilationService.Compile(relativeFileInfo);
compilationResult.EnsureSuccessful();
// Create and return the page
// We're not actually using the cache, but the CompilerCacheResult ctor contains the logic to create the page factory
CompilerCacheResult compilerCacheResult = new CompilerCacheResult(relativePath, compilationResult, Array.Empty <IChangeToken>());
return(compilerCacheResult.PageFactory());
}