mirror of https://github.com/miniflux/v2.git
105 lines
2.2 KiB
Go
105 lines
2.2 KiB
Go
// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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package urllib // import "miniflux.app/v2/internal/urllib"
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import (
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"fmt"
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"net/url"
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"strings"
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)
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// IsAbsoluteURL returns true if the link is absolute.
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func IsAbsoluteURL(link string) bool {
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u, err := url.Parse(link)
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if err != nil {
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return false
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}
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return u.IsAbs()
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}
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// AbsoluteURL converts the input URL as absolute URL if necessary.
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func AbsoluteURL(baseURL, input string) (string, error) {
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if strings.HasPrefix(input, "//") {
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input = "https://" + input[2:]
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}
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u, err := url.Parse(input)
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if err != nil {
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return "", fmt.Errorf("unable to parse input URL: %v", err)
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}
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if u.IsAbs() {
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return u.String(), nil
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}
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base, err := url.Parse(baseURL)
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if err != nil {
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return "", fmt.Errorf("unable to parse base URL: %v", err)
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}
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return base.ResolveReference(u).String(), nil
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}
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// RootURL returns absolute URL without the path.
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func RootURL(websiteURL string) string {
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if strings.HasPrefix(websiteURL, "//") {
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websiteURL = "https://" + websiteURL[2:]
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}
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absoluteURL, err := AbsoluteURL(websiteURL, "")
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if err != nil {
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return websiteURL
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}
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u, err := url.Parse(absoluteURL)
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if err != nil {
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return absoluteURL
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}
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return u.Scheme + "://" + u.Host + "/"
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}
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// IsHTTPS returns true if the URL is using HTTPS.
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func IsHTTPS(websiteURL string) bool {
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parsedURL, err := url.Parse(websiteURL)
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if err != nil {
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return false
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}
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return strings.EqualFold(parsedURL.Scheme, "https")
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}
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// Domain returns only the domain part of the given URL.
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func Domain(websiteURL string) string {
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parsedURL, err := url.Parse(websiteURL)
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if err != nil {
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return websiteURL
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}
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return parsedURL.Host
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}
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// JoinBaseURLAndPath returns a URL string with the provided path elements joined together.
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func JoinBaseURLAndPath(baseURL, path string) (string, error) {
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if baseURL == "" {
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return "", fmt.Errorf("empty base URL")
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}
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if path == "" {
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return "", fmt.Errorf("empty path")
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}
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_, err := url.Parse(baseURL)
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if err != nil {
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return "", fmt.Errorf("invalid base URL: %w", err)
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}
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finalURL, err := url.JoinPath(baseURL, path)
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if err != nil {
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return "", fmt.Errorf("unable to join base URL %s and path %s: %w", baseURL, path, err)
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}
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return finalURL, nil
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}
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