Remove entries on install (#213)

pkg/utils/common.go

@@ -17,6 +17,7 @@ limitations under the License.
 package utils
 
 import (
+	"bufio"
 	"crypto/sha256"
 	"errors"
 	"fmt"
@@ -527,3 +528,31 @@ func UkiBootMode() state.Boot {
 	}
 	return state.Unknown
 }
+
+// SystemdBootConfReader reads a systemd-boot conf file and returns a map with the key/value pairs
+func SystemdBootConfReader(filePath string) (map[string]string, error) {
+	file, err := os.Open(filePath)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	result := make(map[string]string)
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		line := scanner.Text()
+		parts := strings.SplitN(line, " ", 2)
+		if len(parts) == 2 {
+			result[parts[0]] = parts[1]
+		}
+		if len(parts) == 1 {
+			result[parts[0]] = ""
+		}
+	}
+
+	if err := scanner.Err(); err != nil {
+		return nil, err
+	}
+
+	return result, nil
+}