82 lines
1.8 KiB
Go
82 lines
1.8 KiB
Go
package govalidator
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import (
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"encoding/json"
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"fmt"
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"reflect"
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"strconv"
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)
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// ToString convert the input to a string.
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func ToString(obj interface{}) string {
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res := fmt.Sprintf("%v", obj)
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return res
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}
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// ToJSON convert the input to a valid JSON string
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func ToJSON(obj interface{}) (string, error) {
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res, err := json.Marshal(obj)
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if err != nil {
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res = []byte("")
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}
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return string(res), err
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}
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// ToFloat convert the input string to a float, or 0.0 if the input is not a float.
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func ToFloat(value interface{}) (res float64, err error) {
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val := reflect.ValueOf(value)
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switch value.(type) {
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case int, int8, int16, int32, int64:
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res = float64(val.Int())
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case uint, uint8, uint16, uint32, uint64:
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res = float64(val.Uint())
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case float32, float64:
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res = val.Float()
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case string:
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res, err = strconv.ParseFloat(val.String(), 64)
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if err != nil {
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res = 0
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}
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default:
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err = fmt.Errorf("ToInt: unknown interface type %T", value)
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res = 0
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}
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return
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}
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// ToInt convert the input string or any int type to an integer type 64, or 0 if the input is not an integer.
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func ToInt(value interface{}) (res int64, err error) {
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val := reflect.ValueOf(value)
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switch value.(type) {
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case int, int8, int16, int32, int64:
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res = val.Int()
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case uint, uint8, uint16, uint32, uint64:
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res = int64(val.Uint())
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case float32, float64:
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res = int64(val.Float())
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case string:
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if IsInt(val.String()) {
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res, err = strconv.ParseInt(val.String(), 0, 64)
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if err != nil {
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res = 0
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}
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} else {
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err = fmt.Errorf("ToInt: invalid numeric format %g", value)
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res = 0
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}
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default:
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err = fmt.Errorf("ToInt: unknown interface type %T", value)
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res = 0
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}
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return
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}
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// ToBoolean convert the input string to a boolean.
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func ToBoolean(str string) (bool, error) {
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return strconv.ParseBool(str)
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}
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