initial commit before refactor switch

server/funcs_r00tclient.go

@@ -0,0 +1,88 @@
+package server
+
+import (
+	`reflect`
+	`strings`
+)
+
+/*
+	ToMap generates and returns a map representation of a R00tClient.
+
+	Keys by default use the YAML tag for the name.
+	If they are specified with the tag `renderName:"-"`, they are skipped.
+	If they are specified with the tag `renderName:"Foo"`, the string "Foo" will
+	be used as the key instead.
+	Only bools, strings, and pointers thereof are allowed.
+
+	m will never be nil, but may be empty.
+
+	Currently err will always be nil but is specified for future API compatibility.
+	It should be handled by callers for future-proofing, as it may not always be nil
+	in the future.
+*/
+func (r *R00tClient) ToMap() (m map[string]string, err error) {
+
+	var ok bool
+	var tagVal string
+	var field reflect.StructField
+	var fieldVal reflect.Value
+	var rootVal reflect.Value
+
+	m = make(map[string]string)
+
+	if r == nil {
+		return
+	}
+	rootVal = reflect.ValueOf(r).Elem()
+
+	for i := 0; i < rootVal.NumField(); i++ {
+		field = rootVal.Type().Field(i)
+		fieldVal = rootVal.Field(i)
+
+		// Only exported.
+		if field.PkgPath != "" {
+			continue
+		}
+		// Get the key name.
+		tagVal = field.Tag.Get(prettyTag)
+		if tagVal == "-" {
+			continue
+		}
+		if _, ok = field.Tag.Lookup(prettyTag); !ok {
+			tagVal = field.Tag.Get("yaml")
+			if tagVal == "" || strings.HasPrefix(tagVal, "-") {
+				// Use the field name itself. YOLO
+				tagVal = field.Name
+			} else {
+				tagVal = strings.Split(tagVal, ",")[0]
+			}
+		}
+		switch fieldVal.Kind() {
+		case reflect.Bool:
+			if fieldVal.Interface().(bool) {
+				m[tagVal] = trueUaFieldStr
+			} else {
+				m[tagVal] = falseUaFieldStr
+			}
+		case reflect.String:
+			m[tagVal] = fieldVal.String()
+		case reflect.Ptr:
+			if fieldVal.IsNil() {
+				m[tagVal] = nilUaFieldStr
+			} else {
+				switch fieldVal.Type().Elem().Kind() {
+				case reflect.Bool:
+					if fieldVal.Elem().Bool() {
+						m[tagVal] = trueUaFieldStr
+					} else {
+						m[tagVal] = falseUaFieldStr
+					}
+				case reflect.String:
+					m[tagVal] = fieldVal.Elem().String()
+				}
+			}
+		}
+	}
+
+	return
+}