art: Drop provider from c3os code

Part of: https://github.com/c3os-io/c3os/issues/68

pkg/machine/bootcmdline.go

@@ -0,0 +1,88 @@
+package machine
+
+import (
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"strings"
+
+	"github.com/google/shlex"
+	"github.com/hashicorp/go-multierror"
+	"github.com/itchyny/gojq"
+	"gopkg.in/yaml.v2"
+)
+
+func DotToYAML(file string) ([]byte, error) {
+	if file == "" {
+		file = "/proc/cmdline"
+	}
+	dat, err := ioutil.ReadFile(file)
+	if err != nil {
+		return []byte{}, err
+	}
+
+	v := stringToMap(string(dat))
+
+	return dotToYAML(v)
+}
+
+func stringToMap(s string) map[string]interface{} {
+	v := map[string]interface{}{}
+
+	splitted, _ := shlex.Split(s)
+	for _, item := range splitted {
+		parts := strings.SplitN(item, "=", 2)
+		value := "true"
+		if len(parts) > 1 {
+			value = strings.Trim(parts[1], `"`)
+		}
+		key := strings.Trim(parts[0], `"`)
+		v[key] = value
+	}
+
+	return v
+}
+func jq(command string, data map[string]interface{}) (map[string]interface{}, error) {
+	query, err := gojq.Parse(command)
+	if err != nil {
+		return nil, err
+	}
+	code, err := gojq.Compile(query)
+	if err != nil {
+		return nil, err
+	}
+	iter := code.Run(data)
+
+	v, ok := iter.Next()
+	if !ok {
+		return nil, errors.New("failed getting rsult from gojq")
+	}
+	if err, ok := v.(error); ok {
+		return nil, err
+	}
+	if t, ok := v.(map[string]interface{}); ok {
+		return t, nil
+	}
+
+	return make(map[string]interface{}), nil
+}
+
+func dotToYAML(v map[string]interface{}) ([]byte, error) {
+	data := map[string]interface{}{}
+	var errs error
+
+	for k, value := range v {
+		newData, err := jq(fmt.Sprintf(".%s=\"%s\"", k, value), data)
+		if err != nil {
+			errs = multierror.Append(errs, err)
+			continue
+		}
+		data = newData
+	}
+
+	out, err := yaml.Marshal(&data)
+	if err != nil {
+		errs = multierror.Append(errs, err)
+	}
+	return out, errs
+}