internal override Task ResolveView(ResolveViewArgs resolveViewArgs)
{
if (resolveViewArgs.Success == true)
{
return(Task.CompletedTask);
}
var path = new[] { resolveViewArgs.Name }
.SelectMany(pattern => ViewExtensions.Select(ext => $"{pattern}{ext}"))
.SelectMany(pattern => SearchPaths.Select(searchPath => CombineAndRestrictPath(searchPath, pattern)))
.Where(_ => File.Exists(_))
.FirstOrDefault();
if (path == null)
{
return(Task.CompletedTask);
}
if (RoutableOptions.TryGetMimeType(Path.GetExtension(path), out var mimeType) == false)
{
mimeType = DefaultMimeType;
}
resolveViewArgs.MimeType = mimeType;
resolveViewArgs.LastModified = File.GetLastWriteTimeUtc(path);
resolveViewArgs.GetStream = () => Task.FromResult <Stream>(File.OpenRead(path));
resolveViewArgs.Success = true;
return(Task.CompletedTask);
}
internal async override Task ResolveView(ResolveViewArgs resolveViewArgs)
{
foreach (var resolver in AsyncViewResolvers)
{
await resolver(resolveViewArgs);
if (resolveViewArgs.Success == true)
{
return;
}
}
ViewResolvers?.Invoke(this, resolveViewArgs);
}
internal override Task ResolveView(ResolveViewArgs resolveViewArgs)
{
if (resolveViewArgs.Success == true)
{
return(Task.CompletedTask);
}
// build list of path patterns.
var name = resolveViewArgs.Name.Replace('/', '.').Replace('\\', '.');
var paths = ViewExtensions.Select(ext => $"{name}{ext}");
foreach (var search in SearchPaths.SelectMany(_ => _.Prefixes.Select(prefix => new { prefix = prefix, assembly = _.Assembly })))
{
// search every path pattern.
foreach (var path in paths)
{
var absolutePath = string.IsNullOrWhiteSpace(search.prefix) ? path : $"{search.prefix.TrimEnd('.')}.{path}";
var info = search.assembly.GetManifestResourceInfo(absolutePath);
if (info == null)
{
continue;
}
// resolve mime type.
if (RoutableOptions.TryGetMimeType(Path.GetExtension(path), out var mimeType) == false)
{
mimeType = DefaultMimeType;
}
// construct response.
resolveViewArgs.MimeType = mimeType;
resolveViewArgs.LastModified = DateTime.MinValue; // embedded resources will not ever change.
resolveViewArgs.GetStream = () => Task.FromResult(search.assembly.GetManifestResourceStream(absolutePath));
resolveViewArgs.Success = true;
return(Task.CompletedTask);
}
}
// no matches.
return(Task.CompletedTask);
}
public static async Task <Template <TContext, TRequest, TResponse> > Find(RoutableOptions <TContext, TRequest, TResponse> options, string viewName)
{
if (options.TryGetFeatureOptions <List <SimpleViewOptions <TContext, TRequest, TResponse> > >(out var viewOptionsCollection) == false)
{
// use default options.
viewOptionsCollection = new List <SimpleViewOptions <TContext, TRequest, TResponse> >()
{
new SimpleFileSystemViewOptions <TContext, TRequest, TResponse>(options)
};
}
foreach (var viewOptions in viewOptionsCollection)
{
// resolve view.
var resolveViewArgs = new ResolveViewArgs {
Name = viewName
};
await viewOptions.ResolveView(resolveViewArgs);
if (resolveViewArgs.Success == false)
{
continue;
}
// parse view source and return a template.
using (var stream = await resolveViewArgs.GetStream())
using (var reader = new StreamReader(stream)) {
try {
var parser = new TemplateParser <TContext, TRequest, TResponse>(options, viewOptions);
var template = parser.TryParse(viewName, resolveViewArgs.LastModified, await reader.ReadToEndAsync());
template.MimeType = resolveViewArgs.MimeType;
return(template);
} catch (Exception ex) {
throw new SimpleViewParserException(viewName, ex);
}
}
}
throw new SimpleViewNotFoundException(viewName);
}
