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