WIP sanitizing build info to omit username

src/build_info.cpp

@@ -454,6 +454,23 @@ std::string optional_features_report()
 	return o.str();
 }
 
+static std::string sanitize_path(const std::string& path) {
+#ifdef _WIN32
+	const std::string user_profile = getenv("USERPROFILE");
+#else
+	const std::string user_profile = getenv("HOME");
+#endif
+	const std::string canonicalized = filesystem::normalize_path(path, true, false);
+	if(canonicalized.compare(0, user_profile.size(), user_profile) == 0) {
+#ifdef _WIN32
+		return "%USERPROFILE%" + canonicalized.substr(user_profile.size());
+#else
+		return "$HOME" + canonicalized.substr(user_profile.size());
+#endif
+	}
+	return canonicalized;
+}
+
 std::string full_build_report()
 {
 	std::ostringstream o;
@@ -464,12 +481,12 @@ std::string full_build_report()
 	  << "Game paths\n"
 	  << "==========\n"
 	  << '\n'
-	  << "Data dir:        " << game_config::path << '\n'
-	  << "User config dir: " << filesystem::get_user_config_dir() << '\n'
-	  << "User data dir:   " << filesystem::get_user_data_dir() << '\n'
-	  << "Saves dir:       " << filesystem::get_saves_dir() << '\n'
-	  << "Add-ons dir:     " << filesystem::get_addons_dir() << '\n'
-	  << "Cache dir:       " << filesystem::get_cache_dir() << '\n'
+	  << "Data dir:        " << sanitize_path(game_config::path) << '\n'
+	  << "User config dir: " << sanitize_path(filesystem::get_user_config_dir()) << '\n'
+	  << "User data dir:   " << sanitize_path(filesystem::get_user_data_dir()) << '\n'
+	  << "Saves dir:       " << sanitize_path(filesystem::get_saves_dir()) << '\n'
+	  << "Add-ons dir:     " << sanitize_path(filesystem::get_addons_dir()) << '\n'
+	  << "Cache dir:       " << sanitize_path(filesystem::get_cache_dir()) << '\n'
 	  << '\n'
 	  << "Libraries\n"
 	  << "=========\n"