1 files changed, 71 insertions, 0 deletions
diff --git a/src/libs/dxvk-native-1.9.2a/src/util/util_env.cpp b/src/libs/dxvk-native-1.9.2a/src/util/util_env.cpp
new file mode 100644
index 00000000..3993ea65
--- /dev/null
+++ b/src/libs/dxvk-native-1.9.2a/src/util/util_env.cpp
@@ -0,0 +1,71 @@
+#include <numeric>
+
+#include "util_env.h"
+
+namespace dxvk::env {
+
+#ifndef DXVK_NATIVE
+  constexpr char dirSlash = '\\';
+#else
+  constexpr char dirSlash = '/';
+#endif
+
+
+  std::string getEnvVar(const char* name) {
+#ifdef DXVK_NATIVE
+    char* result = std::getenv(name);
+    return (result)
+      ? result
+      : "";
+#else
+    std::vector<WCHAR> result;
+    result.resize(MAX_PATH + 1);
+
+    DWORD len = ::GetEnvironmentVariableW(str::tows(name).c_str(), result.data(), MAX_PATH);
+    result.resize(len);
+
+    return str::fromws(result.data());
+#endif
+  }
+
+
+  size_t matchFileExtension(const std::string& name, const char* ext) {
+    auto pos = name.find_last_of('.');
+
+    if (pos == std::string::npos)
+      return pos;
+
+    bool matches = std::accumulate(name.begin() + pos + 1, name.end(), true,
+      [&ext] (bool current, char a) {
+        if (a >= 'A' && a <= 'Z')
+          a += 'a' - 'A';
+        return current && *ext && a == *(ext++);
+      });
+
+    return matches ? pos : std::string::npos;
+  }
+
+
+  std::string getExeName() {
+    std::string fullPath = getExePath();
+    auto n = fullPath.find_last_of(dirSlash);
+    
+    return (n != std::string::npos)
+      ? fullPath.substr(n + 1)
+      : fullPath;
+  }
+
+
+  std::string getExeBaseName() {
+    auto exeName = getExeName();
+#ifndef DXVK_NATIVE
+    auto extp = matchFileExtension(exeName, "exe");
+
+    if (extp != std::string::npos)
+      exeName.erase(extp);
+#endif
+
+    return exeName;
+  }
+  
+}