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// Copyright © 2014 Steve Francia <spf@spf13.com>.
//
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
package cast
import (
"encoding/json"
"fmt"
"html/template"
"strconv"
"time"
)
// ToBoolE casts any value to a bool type.
func ToBoolE(i any) (bool, error) {
i, _ = indirect(i)
switch b := i.(type) {
case bool:
return b, nil
case nil:
return false, nil
case int:
return b != 0, nil
case int8:
return b != 0, nil
case int16:
return b != 0, nil
case int32:
return b != 0, nil
case int64:
return b != 0, nil
case uint:
return b != 0, nil
case uint8:
return b != 0, nil
case uint16:
return b != 0, nil
case uint32:
return b != 0, nil
case uint64:
return b != 0, nil
case float32:
return b != 0, nil
case float64:
return b != 0, nil
case time.Duration:
return b != 0, nil
case string:
return strconv.ParseBool(b)
case json.Number:
v, err := ToInt64E(b)
if err == nil {
return v != 0, nil
}
return false, fmt.Errorf(errorMsg, i, i, false)
default:
if i, ok := resolveAlias(i); ok {
return ToBoolE(i)
}
return false, fmt.Errorf(errorMsg, i, i, false)
}
}
// ToStringE casts any value to a string type.
func ToStringE(i any) (string, error) {
switch s := i.(type) {
case string:
return s, nil
case bool:
return strconv.FormatBool(s), nil
case float64:
return strconv.FormatFloat(s, 'f', -1, 64), nil
case float32:
return strconv.FormatFloat(float64(s), 'f', -1, 32), nil
case int:
return strconv.Itoa(s), nil
case int8:
return strconv.FormatInt(int64(s), 10), nil
case int16:
return strconv.FormatInt(int64(s), 10), nil
case int32:
return strconv.FormatInt(int64(s), 10), nil
case int64:
return strconv.FormatInt(s, 10), nil
case uint:
return strconv.FormatUint(uint64(s), 10), nil
case uint8:
return strconv.FormatUint(uint64(s), 10), nil
case uint16:
return strconv.FormatUint(uint64(s), 10), nil
case uint32:
return strconv.FormatUint(uint64(s), 10), nil
case uint64:
return strconv.FormatUint(s, 10), nil
case json.Number:
return s.String(), nil
case []byte:
return string(s), nil
case template.HTML:
return string(s), nil
case template.URL:
return string(s), nil
case template.JS:
return string(s), nil
case template.CSS:
return string(s), nil
case template.HTMLAttr:
return string(s), nil
case nil:
return "", nil
case fmt.Stringer:
return s.String(), nil
case error:
return s.Error(), nil
default:
if i, ok := indirect(i); ok {
return ToStringE(i)
}
if i, ok := resolveAlias(i); ok {
return ToStringE(i)
}
return "", fmt.Errorf(errorMsg, i, i, "")
}
}
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