42 lines
1,000 B
Go
42 lines
1,000 B
Go
// Copyright (c) 2023-2024 Onur Cinar.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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// https://github.com/cinar/checker
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package v2
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import (
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"reflect"
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"unicode"
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)
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const (
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// nameDigits is the name of the digits check.
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nameDigits = "digits"
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)
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var (
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// ErrNotDigits indicates that the given value is not a valid digits string.
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ErrNotDigits = NewCheckError("NOT_DIGITS")
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)
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// IsDigits checks if the value contains only digit characters.
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func IsDigits(value string) (string, error) {
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for _, r := range value {
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if !unicode.IsDigit(r) {
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return value, ErrNotDigits
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}
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}
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return value, nil
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}
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// checkDigits checks if the value contains only digit characters.
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func checkDigits(value reflect.Value) (reflect.Value, error) {
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_, err := IsDigits(value.Interface().(string))
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return value, err
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}
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// makeDigits makes a checker function for the digits checker.
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func makeDigits(_ string) CheckFunc[reflect.Value] {
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return checkDigits
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}
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