From c44d5f06fcea7af11d03f62a2670030c65ad0089 Mon Sep 17 00:00:00 2001
From: Andreas Grois <andi@grois.info>
Date: Sat, 10 Mar 2018 12:52:52 +0100
Subject: Make sure png file gets closed by wrapping the file descriptor into a
 class with destructor

---
 BuddhaTest/include/Helpers.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'BuddhaTest/include/Helpers.h')

diff --git a/BuddhaTest/include/Helpers.h b/BuddhaTest/include/Helpers.h
index c24e2c7..ad14305 100644
--- a/BuddhaTest/include/Helpers.h
+++ b/BuddhaTest/include/Helpers.h
@@ -2,6 +2,7 @@
 #include <glad/glad.h>
 #include <GLFW/glfw3.h>
 #include <vector>
+#include <stdio.h> //includes FILE typedef
 
 namespace Helpers
 {
@@ -9,4 +10,16 @@ namespace Helpers
 	GLuint LoadComputeShader(const char * compute_file_path);
 
     void WriteOutputPNG(const std::vector<uint32_t>& data, unsigned int width, unsigned int height);
+
+    /** Wraps around a C file descriptor. Libpng could be taught to use C++ streams, but I'm too lazy and rather wrap this ugly thing up, so it gets cleaned... */
+    class ScopedCFileDescriptor
+    {
+    public:
+        ScopedCFileDescriptor(const char *path, const char *mode);
+        ~ScopedCFileDescriptor();
+        FILE * Get() const;
+        bool IsValid() const;
+    private:
+        FILE * Descriptor;
+    };
 }
-- 
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