query: cpu: add cpu.temp

I'm sorry for being kinda absent. I was learning some kotlin cuz I'm really interested into making an app ;)

Author: Toni500github

include/query.hpp

@@ -183,6 +183,7 @@ class CPU
         double freq_min        = 0;
         double freq_cur        = 0;
         double freq_bios_limit = 0;
+        double temp            = 0;
 
         // private:
         double freq_max_cpuinfo = 0;
@@ -196,6 +197,7 @@ class CPU
     double&      freq_min() noexcept;
     double&      freq_cur() noexcept;
     double&      freq_bios_limit() noexcept;
+    double&      temp() noexcept;
 
 private:
     static bool  m_bInit;

src/main.cpp

@@ -304,6 +304,7 @@ gpu
 
 cpu
   name		: CPU model name [AMD Ryzen 5 5500]
+  temp		: CPU temperature (Celsius) [40.62]
   nproc         : CPU number of virtual proccessors [12]
   freq_bios_limit: CPU freq (limited by bios, in GHz) [4.32]
   freq_cur	: CPU freq (current, in GHz) [3.42]

src/parse.cpp

@@ -1143,6 +1143,8 @@ void addValueFromModuleMember(const std::string& moduleName, const std::string&
                 case "freq_max"_fnv1a16: SYSINFO_INSERT(query_cpu.freq_max()); break;
 
                 case "freq_min"_fnv1a16: SYSINFO_INSERT(query_cpu.freq_min()); break;
+
+                case "temp"_fnv1a16: SYSINFO_INSERT(query_cpu.temp()); break;
             }
         }
     }

src/query/unix/cpu.cpp

@@ -28,6 +28,7 @@
 #include <cstdlib>
 #include <filesystem>
 #include <fstream>
+#include <string>
 
 #include "fmt/format.h"
 #include "query.hpp"
@@ -109,6 +110,33 @@ static CPU::CPU_t get_cpu_infos()
     return ret;
 }
 
+static double get_cpu_temp()
+{
+    for (const auto& dir : std::filesystem::directory_iterator{"/sys/class/hwmon/"})
+    {
+        const std::string& name = read_by_syspath((dir.path() / "name").string());
+        debug("name = {}", name);
+        // if only !continue
+        if (name == "cpu" ||
+            name == "k10temp" || 
+            name == "coretemp"){}
+        else
+            continue;
+
+        const std::string& temp_file = std::filesystem::exists(dir.path() / "temp1_input") ? dir.path() / "temp1_input" :
+                                                                                             dir.path() / "device/temp1_input";
+        if (!std::filesystem::exists(temp_file))
+            continue;
+
+        const double ret = std::stod(read_by_syspath(temp_file));
+        debug("cpu temp ret = {}", ret);
+
+        return ret / 1000.0;
+    }
+
+    return 0.0;
+}
+
 CPU::CPU() noexcept
 {
     if (!m_bInit)
@@ -135,3 +163,13 @@ double& CPU::freq_max() noexcept
 
 double& CPU::freq_min() noexcept
 { return m_cpu_infos.freq_min; }
+
+double& CPU::temp() noexcept
+{
+    static bool done = false;
+    if (!done)
+        m_cpu_infos.temp = get_cpu_temp();
+    done = true;
+
+    return m_cpu_infos.temp;
+}