private static string GenerateHtml(HelpPath helpPath)
{
var html = new HtmlDocument();
if (helpPath.GetPath() == null)
{
return(null);
}
var htmlRaw = Markdown.ParseFromFile(helpPath.GetPath());
if (string.IsNullOrEmpty(htmlRaw))
{
return(null);
}
html.LoadHtml(htmlRaw);
foreach (var node in html.DocumentNode.SelectNodes("//img"))
{
var src = node.Attributes["src"].Value;
node.SetAttributeValue("src", ConvertPathIfNeeded(src, helpPath));
}
var stream = new MemoryStream();
var streamR = new StreamReader(stream);
html.Save(stream);
stream.Seek(0, SeekOrigin.Begin);
return(streamR.ReadToEnd());
}
/// <summary>
/// Determine whether the help file for this controller/action exist or not
/// </summary>
/// <param name="viewContext"></param>
/// <param name="cultureInfo"></param>
/// <returns>True if the help exist</returns>
public static bool Exists(ViewContext viewContext, CultureInfo cultureInfo)
{
var controllerName = viewContext.RouteData.Values["controller"].ToString();
var actionName = viewContext.RouteData.Values["action"].ToString();
var lang = cultureInfo.TwoLetterISOLanguageName.ToLower();
var helpPath = new HelpPath(controllerName, actionName, lang);
return(helpPath.GetPath() != null);
}
private static string ConvertPathIfNeeded(string src, HelpPath helpPath)
{
try
{
var url = new Uri(src);
return(url.ToString());
}
catch (Exception)
{
//ignore
}
return
($"/{ApplicationExtension.HelpDownFolderName}/{helpPath.GetControllerName()}/{helpPath.GetActionName()}/{src}");
}
