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package filter
import (
"reflect"
"strings"
)
// DotPrefixMatch finds the shortest unambiguous identifier for a given namespace.
func DotPrefixMatch(short string, full string) bool {
fullMembs := strings.Split(full, ".")
shortMembs := strings.Split(short, ".")
if len(fullMembs) != len(shortMembs) {
return false
}
for i := range fullMembs {
if !strings.HasPrefix(fullMembs[i], shortMembs[i]) {
return false
}
}
return true
}
// ValueOf returns the value of the given field.
func ValueOf(obj any, field string) any {
value := reflect.ValueOf(obj)
typ := value.Type()
parts := strings.Split(field, ".")
key := parts[0]
rest := strings.Join(parts[1:], ".")
if value.Kind() == reflect.Map {
switch reflect.TypeOf(obj).Elem().Kind() {
case reflect.String:
m := value.Interface().(map[string]string)
for k, v := range m {
if DotPrefixMatch(field, k) {
return v
}
}
return m[field]
case reflect.Map:
for _, entry := range value.MapKeys() {
if entry.Interface() != key {
continue
}
m := value.MapIndex(entry)
return ValueOf(m.Interface(), rest)
}
return nil
default:
return nil
}
}
for i := range value.NumField() {
fieldValue := value.Field(i)
fieldType := typ.Field(i)
yaml := fieldType.Tag.Get("yaml")
if yaml == ",inline" {
v := ValueOf(fieldValue.Interface(), field)
if v != nil {
return v
}
}
yamlKey, _, _ := strings.Cut(yaml, ",")
if yamlKey == key {
v := fieldValue.Interface()
if len(parts) == 1 {
return v
}
return ValueOf(v, rest)
}
}
return nil
}
|
