Add get_basename, fix win32 build

std::string::substr likes to throw

src/blacklist.cpp

@@ -12,8 +12,7 @@ static std::string get_proc_name() {
    if (!proc_name.empty()) {
        return proc_name;
    }
-   const std::string p = get_exe_path();
-   return p.substr(p.find_last_of("/\\") + 1);
+   return get_basename(get_exe_path());
 }
 
 static  std::vector<std::string> blacklist {

src/file_utils.cpp

@@ -18,6 +18,19 @@ std::string read_line(const std::string& filename)
     return line;
 }
 
+std::string get_basename(const std::string&& path)
+{
+    auto npos = path.find_last_of("/\\");
+    if (npos == std::string::npos)
+        return path;
+
+    if (npos < path.size() - 1)
+        return path.substr(npos + 1);
+    return path;
+}
+
+#ifdef __gnu_linux__
+
 bool find_folder(const char* root, const char* prefix, std::string& dest)
 {
     struct dirent* dp;
@@ -106,6 +119,11 @@ std::string read_symlink(const char * link)
     return std::string(result, (count > 0) ? count : 0);
 }
 
+std::string read_symlink(const std::string&& link)
+{
+    return read_symlink(link.c_str());
+}
+
 std::string get_exe_path()
 {
     return read_symlink("/proc/self/exe");
@@ -180,3 +198,5 @@ std::string get_config_dir()
         path += "/.config";
     return path;
 }
+
+#endif // __gnu_linux__

src/file_utils.h

@@ -19,6 +19,8 @@ std::vector<std::string> ls(const char* root, const char* prefix = nullptr, LS_F
 bool file_exists(const std::string& path);
 bool dir_exists(const std::string& path);
 std::string read_symlink(const char * link);
+std::string read_symlink(const std::string&& link);
+std::string get_basename(const std::string&& path); //prefix so it doesn't conflict libgen
 std::string get_exe_path();
 std::string get_wine_exe_name(bool keep_ext = false);
 std::string get_home_dir();

src/file_utils_win32.cpp

@@ -3,14 +3,6 @@
 #include <fstream>
 #include <string>
 
-std::string read_line(const std::string& filename)
-{
-    std::string line;
-    std::ifstream file(filename);
-    std::getline(file, line);
-    return line;
-}
-
 bool find_folder(const char* root, const char* prefix, std::string& dest)
 {
     return false;

src/hud_elements.cpp

@@ -373,6 +373,7 @@ void HudElements::ram(){
 
 void HudElements::procmem()
 {
+#ifdef __gnu_linux__
     const char* unit = nullptr;
     if (!HUDElements.params->enabled[OVERLAY_PARAM_ENABLED_procmem])
         return;
@@ -408,6 +409,7 @@ void HudElements::procmem()
         ImGui::Text("%s", unit);
         ImGui::PopFont();
     }
+#endif
 }
 
 void HudElements::fps(){

src/meson.build

@@ -53,6 +53,7 @@ vklayer_files = files(
   'gpu.cpp',
   'vulkan.cpp',
   'blacklist.cpp',
+  'file_utils.cpp',
 )
 opengl_files  = []
 if ['windows', 'mingw'].contains(host_machine.system())
@@ -72,7 +73,6 @@ endif
 if is_unixy
   vklayer_files += files(
     'cpu.cpp',
-    'file_utils.cpp',
     'memory.cpp',
     'iostats.cpp',
     'notify.cpp',