Add regex parsing for xeon cpu names

CMakeLists.txt

@@ -69,7 +69,7 @@ elseif(CMAKE_SYSTEM_NAME STREQUAL "OpenBSD")
 elseif(CMAKE_SYSTEM_NAME STREQUAL "NetBSD")
   target_sources(btop PRIVATE src/netbsd/btop_collect.cpp)
 elseif(LINUX)
-  target_sources(btop PRIVATE src/linux/btop_collect.cpp)
+  target_sources(btop PRIVATE src/linux/btop_collect.cpp src/linux/parse_cpu_names.cpp)
 else()
   message(FATAL_ERROR "${CMAKE_SYSTEM_NAME} is not supported")
 endif()

src/linux/btop_collect.cpp

@@ -43,6 +43,7 @@ tab-size = 4
 	#include <pwd.h>
 #endif
 
+#include "parse_cpu_names.hpp"
 #include "../btop_shared.hpp"
 #include "../btop_config.hpp"
 #include "../btop_tools.hpp"
@@ -352,6 +353,11 @@ namespace Cpu {
 
 			}
 
+			auto xeon_name = parse_xeon_name(name); 
+			if (xeon_name) {
+				return xeon_name.value();
+			}
+
 			auto name_vec = ssplit(name, ' ');
 
 			if ((s_contains(name, "Xeon"s) or v_contains(name_vec, "Duo"s)) and v_contains(name_vec, "CPU"s)) {

src/linux/parse_cpu_names.cpp

@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: Apache-2.0
+
+#include "parse_cpu_names.hpp"
+
+#include <cstddef>
+#include <optional>
+#include <regex>
+#include <string>
+
+auto parse_xeon_name(const std::string& name) -> std::optional<std::string> {
+  std::regex regex{R"((?:\S+\(R\) ?)+ ([a-zA-Z0-9\- ]+[^ ])? ?CPU ([a-zA-Z0-9\- ]+[^ ])? ?(?:@ \d\.\d\dGHz))"};
+  std::smatch match{};
+  if (std::regex_match(name, match, regex)) {
+    for (std::size_t i = 1; i < match.size(); ++i) {
+      if (!match[i].str().empty()) {
+        return match[i].str();
+      }
+    }
+  }
+  return std::nullopt;
+}

src/linux/parse_cpu_names.hpp

@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <optional>
+#include <string>
+
+auto parse_xeon_name(const std::string& name) -> std::optional<std::string>;