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package util
import "reflect"
// IsNotEmpty returns true if the given value is not zero or empty.
func IsNotEmpty(given interface{}) bool {
return !IsEmpty(given)
}
// IsEmpty returns true if the given value has the zero value for its type.
func IsEmpty(given interface{}) bool {
g := reflect.ValueOf(given)
if !g.IsValid() {
return true
}
if g.Kind() == reflect.Ptr {
g = g.Elem()
}
// Basically adapted from text/template.isTrue
switch g.Kind() {
case reflect.Array, reflect.Slice, reflect.Map, reflect.String:
return g.Len() == 0
case reflect.Bool:
return !g.Bool()
case reflect.Complex64, reflect.Complex128:
return g.Complex() == 0
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return g.Int() == 0
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return g.Uint() == 0
case reflect.Float32, reflect.Float64:
return g.Float() == 0
case reflect.Struct:
return g.IsZero()
default:
return g.IsNil()
}
}
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