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package parser
import (
"fmt"
"reflect"
)
// EncodeNode Converts a node to labels.
// nodes -> labels.
func EncodeNode(node *Node) map[string]string {
labels := make(map[string]string)
encodeNode(labels, node.Name, node)
return labels
}
func encodeNode(labels map[string]string, root string, node *Node) {
for _, child := range node.Children {
if child.Disabled {
continue
}
var sep string
if child.Name[0] != '[' {
sep = "."
}
childName := root + sep + child.Name
if child.RawValue != nil {
encodeRawValue(labels, childName, child.RawValue)
continue
}
if len(child.Children) > 0 {
encodeNode(labels, childName, child)
} else if len(child.Name) > 0 {
labels[childName] = child.Value
}
}
}
func encodeRawValue(labels map[string]string, root string, rawValue interface{}) {
if rawValue == nil {
return
}
tValue := reflect.TypeOf(rawValue)
if tValue.Kind() == reflect.Map && tValue.Elem().Kind() == reflect.Interface {
r := reflect.ValueOf(rawValue).
Convert(reflect.TypeOf((map[string]interface{})(nil))).
Interface().(map[string]interface{})
for k, v := range r {
switch tv := v.(type) {
case string:
labels[root+"."+k] = tv
case []interface{}:
for i, e := range tv {
encodeRawValue(labels, fmt.Sprintf("%s.%s[%d]", root, k, i), e)
}
default:
encodeRawValue(labels, root+"."+k, v)
}
}
}
}
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