From: Tim Rowley <timothy.o.rowley@intel.com>
Date: Wed, 4 May 2016 16:40:10 +0000 (-0600)
Subject: swr: [rasterizer core] utility function for getenv
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f2a1f894ba3af9299c9a1e770ef25247a6690637;p=mesa.git

swr: [rasterizer core] utility function for getenv

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>
---

diff --git a/src/gallium/drivers/swr/rasterizer/core/utils.h b/src/gallium/drivers/swr/rasterizer/core/utils.h
index e3c534dd851..1c4780a5276 100644
--- a/src/gallium/drivers/swr/rasterizer/core/utils.h
+++ b/src/gallium/drivers/swr/rasterizer/core/utils.h
@@ -866,3 +866,20 @@ struct TemplateArgUnroller
     }
 };
 
+//////////////////////////////////////////////////////////////////////////
+/// Helper used to get an environment variable
+//////////////////////////////////////////////////////////////////////////
+static INLINE std::string GetEnv(const std::string& variableName)
+{
+    std::string output;
+#if defined(_WIN32)
+    DWORD valueSize = GetEnvironmentVariableA(variableName.c_str(), nullptr, 0);
+    if (!valueSize) return output;
+    output.resize(valueSize - 1); // valueSize includes null, output.resize() does not
+    GetEnvironmentVariableA(variableName.c_str(), &output[0], valueSize);
+#else
+    output = getenv(variableName.c_str());
+#endif
+
+    return output;
+}
\ No newline at end of file