podman

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package internal
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import (
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	"net/url"
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	"regexp"
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	"strings"
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)
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const (
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	defaultHTTPPort  = ":80"
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	defaultHTTPSPort = ":443"
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)
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// Regular expressions used by the normalizations
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var rxPort = regexp.MustCompile(`(:\d+)/?$`)
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var rxDupSlashes = regexp.MustCompile(`/{2,}`)
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// NormalizeURL will normalize the specified URL
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// This was added to replace a previous call to the no longer maintained purell library:
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// The call that was used looked like the following:
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//
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//	url.Parse(purell.NormalizeURL(parsed, purell.FlagsSafe|purell.FlagRemoveDuplicateSlashes))
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//
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// To explain all that was included in the call above, purell.FlagsSafe was really just the following:
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//   - FlagLowercaseScheme
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//   - FlagLowercaseHost
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//   - FlagRemoveDefaultPort
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//   - FlagRemoveDuplicateSlashes (and this was mixed in with the |)
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//
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// This also normalizes the URL into its urlencoded form by removing RawPath and RawFragment.
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func NormalizeURL(u *url.URL) {
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	lowercaseScheme(u)
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	lowercaseHost(u)
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	removeDefaultPort(u)
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	removeDuplicateSlashes(u)
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	u.RawPath = ""
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	u.RawFragment = ""
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}
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func lowercaseScheme(u *url.URL) {
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	if len(u.Scheme) > 0 {
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		u.Scheme = strings.ToLower(u.Scheme)
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	}
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}
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func lowercaseHost(u *url.URL) {
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	if len(u.Host) > 0 {
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		u.Host = strings.ToLower(u.Host)
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	}
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}
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func removeDefaultPort(u *url.URL) {
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	if len(u.Host) > 0 {
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		scheme := strings.ToLower(u.Scheme)
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		u.Host = rxPort.ReplaceAllStringFunc(u.Host, func(val string) string {
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			if (scheme == "http" && val == defaultHTTPPort) || (scheme == "https" && val == defaultHTTPSPort) {
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				return ""
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			}
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			return val
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		})
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	}
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}
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func removeDuplicateSlashes(u *url.URL) {
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	if len(u.Path) > 0 {
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		u.Path = rxDupSlashes.ReplaceAllString(u.Path, "/")
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	}
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}
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