/// <summary>
/// Expand a @Current match inside an @Each iterator
/// </summary>
/// <param name="contents">Contents of the @Each block</param>
/// <param name="item">Current item from the @Each enumerable</param>
/// <param name="host">View engine host</param>
/// <returns>String result of the expansion of the @Each.</returns>
private static string ReplaceCurrentMatch(string contents, object item, IViewEngineHost host)
{
return(EachItemSubstitutionRegEx.Replace(
contents,
eachMatch =>
{
if (string.IsNullOrEmpty(eachMatch.Groups["ParameterName"].Value))
{
return eachMatch.Groups["Encode"].Success ? host.HtmlEncode(item.ToString()) : item.ToString();
}
var properties = GetCaptureGroupValues(eachMatch, "ParameterName");
var substitution = GetPropertyValueFromParameterCollection(item, properties);
if (!substitution.Item1)
{
return "[ERR!]";
}
if (substitution.Item2 == null)
{
return string.Empty;
}
return eachMatch.Groups["Encode"].Success ? host.HtmlEncode(substitution.Item2.ToString()) : substitution.Item2.ToString();
}));
}
/// <summary>
/// Performs single @Context.PropertyName substitutions.
/// </summary>
/// <param name="template">The template.</param>
/// <param name="model">The model.</param>
/// <param name="host">View engine host</param>
/// <returns>Template with @Context.PropertyName blocks expanded.</returns>
private static string PerformContextSubstitutions(string template, object model, IViewEngineHost host)
{
return(ContextSubstitutionsRegEx.Replace(
template,
m =>
{
var properties = GetCaptureGroupValues(m, "ParameterName");
var substitution = GetPropertyValueFromParameterCollection(host.Context, properties);
if (!substitution.Item1)
{
return "[ERR!]";
}
if (substitution.Item2 == null)
{
return string.Empty;
}
return m.Groups["Encode"].Success ? host.HtmlEncode(substitution.Item2.ToString()) : substitution.Item2.ToString();
}));
}
/// <summary>
/// Expand a @Current match inside an @Each iterator
/// </summary>
/// <param name="contents">Contents of the @Each block</param>
/// <param name="item">Current item from the @Each enumerable</param>
/// <param name="host">View engine host</param>
/// <returns>String result of the expansion of the @Each.</returns>
private static string ReplaceCurrentMatch(string contents, object item, IViewEngineHost host)
{
return EachItemSubstitutionRegEx.Replace(
contents,
eachMatch =>
{
if (string.IsNullOrEmpty(eachMatch.Groups["ParameterName"].Value))
{
return eachMatch.Groups["Encode"].Success ? host.HtmlEncode(item.ToString()) : item.ToString();
}
var properties = GetCaptureGroupValues(eachMatch, "ParameterName");
var substitution = GetPropertyValueFromParameterCollection(item, properties);
if (!substitution.Item1)
{
return "[ERR!]";
}
if (substitution.Item2 == null)
{
return string.Empty;
}
return eachMatch.Groups["Encode"].Success ? host.HtmlEncode(substitution.Item2.ToString()) : substitution.Item2.ToString();
});
}
/// <summary>
/// Performs single @ViewBag.PropertyName substitutions.
/// </summary>
/// <param name="template">The template.</param>
/// <param name="model">This parameter is not used, the model is based on the "host.Context.ViewBag".</param>
/// <param name="host">View engine host</param>
/// <returns>Template with @ViewBag.PropertyName blocks expanded.</returns>
private static string PerformViewBagSubstitutions(string template, object model, IViewEngineHost host)
{
return ViewBagSubstitutionsRegEx.Replace(
template,
m =>
{
var properties = GetCaptureGroupValues(m, "ParameterName");
var substitution = GetPropertyValueFromParameterCollection(((dynamic)host.Context).ViewBag, properties);
if (!substitution.Item1)
{
return "[ERR!]";
}
if (substitution.Item2 == null)
{
return string.Empty;
}
return m.Groups["Encode"].Success ? host.HtmlEncode(substitution.Item2.ToString()) : substitution.Item2.ToString();
});
}