finished temperature querying

internal/temperature/linux_temp.go

@@ -0,0 +1,43 @@
+//go:build linux
+
+package temperature
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strconv"
+)
+
+func getLinuxCPUTemperature() (TemperatureInformation, error) {
+	tempFile, err := os.Open("/sys/class/thermal/thermal_zone0/temp")
+	if err != nil {
+		fmt.Printf("Could not find /sys/class/thermal/thermal_zone0/temp. Trying /sys/class/hwmon/hwmon0/temp1_input...")
+		tempFile, err = os.Open("/sys/class/hwmon/hwmon0/temp1_input")
+		if err != nil {
+			return TemperatureInformation{0, false}, fmt.Errorf("Couldn't find temperature information. System is unsupported.")
+		}
+	}
+	defer tempFile.Close()
+
+	fileReader := bufio.NewScanner(tempFile)
+
+	var celsius float64
+
+	fileReader.Scan()
+	if fileReader.Err() != nil {
+		return TemperatureInformation{0, false}, fmt.Errorf("Could not read temperature.")
+	}
+
+	data := fileReader.Text()
+	celsius, _ = strconv.ParseFloat(data, 64)
+
+	return TemperatureInformation{
+		Celsius:   celsius / 1000.0,
+		Supported: true,
+	}, nil
+}
+
+func GetTemperatureInformation() (TemperatureInformation, error) {
+	return getLinuxCPUTemperature()
+}