43 lines
1,013 B
Go
43 lines
1,013 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 checker
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import (
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"errors"
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"reflect"
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"unicode"
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)
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// tagDigits is the tag of the checker.
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const tagDigits = "digits"
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// ErrNotDigits indicates that the given string contains non-digit characters.
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var ErrNotDigits = errors.New("please enter a valid number")
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// IsDigits checks if the given string consists of only digit characters.
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func IsDigits(value string) error {
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for _, c := range value {
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if !unicode.IsDigit(c) {
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return ErrNotDigits
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}
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}
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return nil
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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 {
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return checkDigits
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}
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// checkDigits checks if the given string consists of only digit characters.
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func checkDigits(value, _ reflect.Value) error {
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if value.Kind() != reflect.String {
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panic("string expected")
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}
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return IsDigits(value.String())
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}
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