integrated optional (experimentl) CLBlast support

CL/Utils/File.hpp

@@ -0,0 +1,49 @@
+#pragma once
+
+// OpenCL SDK includes
+#include <CL/Utils/Utils.hpp>
+
+// STL includes
+#include <fstream>
+#include <string>
+
+namespace cl {
+namespace util {
+    // Scott Meyers, Effective STL, Addison-Wesley Professional, 2001, Item 29
+    // with error handling
+    UTILSCPP_EXPORT
+    std::string read_text_file(const char* const filename, cl_int* const error)
+    {
+        std::ifstream in(filename);
+        if (in.good())
+        {
+            try
+            {
+                std::string red((std::istreambuf_iterator<char>(in)),
+                                std::istreambuf_iterator<char>());
+                if (in.good() && in.eof())
+                {
+                    if (error != nullptr) *error = CL_SUCCESS;
+                    return red;
+                }
+                else
+                {
+                    detail::errHandler(CL_UTIL_FILE_OPERATION_ERROR, error,
+                                       "File read error!");
+                    return std::string();
+                }
+            } catch (std::bad_alloc& ex)
+            {
+                detail::errHandler(CL_OUT_OF_RESOURCES, error,
+                                   "Bad allocation!");
+                return std::string();
+            }
+        }
+        else
+        {
+            detail::errHandler(CL_INVALID_VALUE, error, "No file!");
+            return std::string();
+        }
+    }
+}
+}