From d02192ed6651af1bcaa8287b0f0e97f6e65330ad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joa=CC=83o=20Matos?= <joao@tritao.eu>
Date: Tue, 1 Mar 2016 18:48:46 +0000
Subject: [PATCH] Improved SDL sample with clone scripts and directory
 scanning.

---
 examples/SDL/SDL.cs       | 23 ++++++++++++++++++++++-
 examples/SDL/SDL.lua      | 21 +++++++++++++++++++++
 examples/SDL/premake4.lua |  3 +--
 3 files changed, 44 insertions(+), 3 deletions(-)
 create mode 100644 examples/SDL/SDL.lua

diff --git a/examples/SDL/SDL.cs b/examples/SDL/SDL.cs
index 1e1a59aa..d044577e 100644
--- a/examples/SDL/SDL.cs
+++ b/examples/SDL/SDL.cs
@@ -1,5 +1,7 @@
 using CppSharp.AST;
 using CppSharp.Passes;
+using System;
+using System.IO;
 
 namespace CppSharp
 {
@@ -10,7 +12,8 @@ namespace CppSharp
             var options = driver.Options;
             options.LibraryName = "SDL";
             options.Headers.Add("SDL.h");
-            options.addIncludeDirs("../../../examples/SDL/SDL-2.0/include");
+            var sdlPath = Path.Combine(GetExamplesDirectory("SDL"), "SDL-2.0/include");
+            options.addIncludeDirs(sdlPath);
             options.OutputDir = "SDL";
         }
 
@@ -64,6 +67,24 @@ namespace CppSharp
             ctx.SetNameOfEnumWithName("LOG_CATEGORY", "LogCategory");
         }
 
+        public static string GetExamplesDirectory(string name)
+        {
+            var directory = Directory.GetParent(Directory.GetCurrentDirectory());
+
+            while (directory != null)
+            {
+                var path = Path.Combine(directory.FullName, "examples", name);
+
+                if (Directory.Exists(path))
+                    return path;
+
+                directory = directory.Parent;
+            }
+
+            throw new Exception(string.Format(
+                "Examples directory for project '{0}' was not found", name));
+        }
+
         static class Program
         {
             public static void Main(string[] args)
diff --git a/examples/SDL/SDL.lua b/examples/SDL/SDL.lua
new file mode 100644
index 00000000..39f54f4a
--- /dev/null
+++ b/examples/SDL/SDL.lua
@@ -0,0 +1,21 @@
+package.path = package.path .. "../build/?.lua;../../build/scripts/?.lua"
+require "Helpers"
+require "Utils"
+
+function clone_sdl()
+  local sdl = path.getabsolute(examplesdir .. "/SDL/SDL-2.0")
+  local repo = "https://github.com/spurious/SDL-mirror.git"
+
+  if os.isdir(sdl) and not os.isdir(sdl .. "/.git") then
+    error("SDL directory is not a git repository.")
+  end
+
+  if not os.isdir(sdl) then
+    git.clone(sdl, repo)
+  end
+end
+
+if _ACTION == "clone_sdl" then
+  clone_sdl()
+  os.exit()
+end
diff --git a/examples/SDL/premake4.lua b/examples/SDL/premake4.lua
index bd3985c9..610b103c 100644
--- a/examples/SDL/premake4.lua
+++ b/examples/SDL/premake4.lua
@@ -46,5 +46,4 @@ project "SDL.Tests"
       libdir .. "/SDL/SDL_video.cs",
       "*.lua"
   }
-
-end
\ No newline at end of file
+end