Use dirEntries

Core/Utils.d

@@ -16,20 +16,24 @@ import std.process : executeShell;
 import std.array : split;
 import std.conv : to;
 
-version(linux) @system string[] getDesktopFiles() 
+version(linux) @system string[] getDesktopFiles()
 {
     synchronized
     {
-        // TODO: replace executeShell with a system call to get the list of files, executeShell is SLOW
-        immutable auto ls = executeShell("ls /usr/share/applications/*.desktop | grep -v _");
-        if (ls.status == 0)
-        {   
-            import std.algorithm : filter;
-            import std.array : array;
-            return ls.output.split("\n").filter!(x => x.length > 0).array;
+        import std.algorithm : map;
+        import std.array : array;
+        import std.file : dirEntries, SpanMode;
+        try
+        {
+            return dirEntries("/usr/share/applications", "*.desktop", SpanMode.depth)
+                .map!(a => a.name)
+                .array;
+        }
+        catch (Exception _)
+        {
+            error("Can't retrieve applications, will return an empty list");
+            return [];
         }
-        error("Can't retrieve applications, will return an empty list");
-        return [];
     }
 }