Fix issue rejectedsoftware#68 and issue rejectedsoftware#5. If DietUs…

…eCache is not set, there is no

reason to compute the file hash. And altered the name of the cached file
to be agnostic to subdirectories of the views directory.

source/diet/html.d

@@ -59,29 +59,36 @@ template compileHTMLDietFileString(string filename, alias contents, ALIASES...)
 	import std.conv : to;
 	enum _diet_files = collectFiles!(filename, contents);
 
-	version (DietUseCache) enum _diet_use_cache = true;
-	else enum _diet_use_cache = false;
-
-
-	ulong computeTemplateHash()
+	version (DietUseCache)
 	{
-		ulong ret = 0;
-		void hash(string s)
+		enum _diet_use_cache = true;
+		ulong computeTemplateHash()
 		{
-			foreach (char c; s) {
-				ret *= 9198984547192449281;
-				ret += c * 7576889555963512219;
+			ulong ret = 0;
+			void hash(string s)
+			{
+				foreach (char c; s) {
+					ret *= 9198984547192449281;
+					ret += c * 7576889555963512219;
+				}
 			}
+			foreach (ref f; _diet_files) {
+				hash(f.name);
+				hash(f.contents);
+			}
+			return ret;
 		}
-		foreach (ref f; _diet_files) {
-			hash(f.name);
-			hash(f.contents);
-		}
-		return ret;
+
+		enum _diet_hash = computeTemplateHash();
+		enum _diet_cache_file_name = filename~"_cached_"~_diet_hash.to!string~".d";
 	}
+	else
+	{
+		enum _diet_use_cache = false;
+		enum _diet_cache_file_name = "***INVALID***"; // not used anyway
+	}
+
 
-	enum _diet_hash = computeTemplateHash();
-	enum _diet_cache_file_name = "_cached_"~filename~"_"~_diet_hash.to!string~".d";
 
 	static if (_diet_use_cache && is(typeof(import(_diet_cache_file_name)))) {
 		pragma(msg, "Using cached Diet HTML template "~filename~"...");