snapshot of https://github.com/ory/keto.git (master, 2026-09-16; blobs > 131072B omitted)

oryx/castx/castx.go

@@ -0,0 +1,68 @@
+// Copyright © 2023 Ory Corp
+// SPDX-License-Identifier: Apache-2.0
+
+package castx
+
+import (
+	"encoding/csv"
+	"fmt"
+	"reflect"
+	"strings"
+
+	"github.com/spf13/cast"
+)
+
+// ToFloatSlice casts an interface to a []float64 type.
+func ToFloatSlice(i interface{}) []float64 {
+	f, _ := ToFloatSliceE(i)
+	return f
+}
+
+// ToFloatSliceE casts an interface to a []float64 type.
+func ToFloatSliceE(i interface{}) ([]float64, error) {
+	if i == nil {
+		return []float64{}, fmt.Errorf("unable to cast %#v of type %T to []float64", i, i)
+	}
+
+	switch v := i.(type) {
+	case []float64:
+		return v, nil
+	}
+
+	kind := reflect.TypeOf(i).Kind()
+	switch kind {
+	case reflect.Slice, reflect.Array:
+		s := reflect.ValueOf(i)
+		a := make([]float64, s.Len())
+		for j := range a {
+			val, err := cast.ToFloat64E(s.Index(j).Interface())
+			if err != nil {
+				return []float64{}, fmt.Errorf("unable to cast %#v of type %T to []float64", i, i)
+			}
+			a[j] = val
+		}
+		return a, nil
+	default:
+		return []float64{}, fmt.Errorf("unable to cast %#v of type %T to []float64", i, i)
+	}
+}
+
+// ToStringSlice casts an interface to a []string type and respects comma-separated values.
+func ToStringSlice(i interface{}) []string {
+	s, _ := ToStringSliceE(i)
+	return s
+}
+
+// ToStringSliceE casts an interface to a []string type and respects comma-separated values.
+func ToStringSliceE(i interface{}) ([]string, error) {
+	switch s := i.(type) {
+	case string:
+		return parseCSV(s)
+	}
+
+	return cast.ToStringSliceE(i)
+}
+
+func parseCSV(v string) ([]string, error) {
+	return csv.NewReader(strings.NewReader(v)).Read()
+}