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