50 lines
1,001 B
Go
50 lines
1,001 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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"net/url"
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"reflect"
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)
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// tagURL is the tag of the checker.
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const tagURL = "url"
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// ErrNotURL indicates that the given value is not a valid URL.
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var ErrNotURL = errors.New("please enter a valid URL")
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// IsURL checks if the given value is a valid URL.
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func IsURL(value string) error {
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url, err := url.ParseRequestURI(value)
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if err != nil {
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return ErrNotURL
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}
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if url.Scheme == "" {
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return ErrNotURL
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}
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if url.Host == "" {
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return ErrNotURL
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}
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return nil
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}
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// makeURL makes a checker function for the URL checker.
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func makeURL(_ string) CheckFunc {
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return checkURL
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}
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// checkURL checks if the given value is a valid URL.
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func checkURL(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 IsURL(value.String())
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}
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