package urlutil import ( "regexp" "strings" ) var ( validPrefixes = map[string][]string{ "url": {"http://", "https://"}, "git": {"git://", "github.com/", "git@"}, "transport": {"tcp://", "udp://", "unix://"}, } urlPathWithFragmentSuffix = regexp.MustCompile(".git(?:#.+)?$") ) // IsURL returns true if the provided str is an HTTP(S) URL. func IsURL(str string) bool { return checkURL(str, "url") } // IsGitURL returns true if the provided str is a git repository URL. func IsGitURL(str string) bool { if IsURL(str) && urlPathWithFragmentSuffix.MatchString(str) { return true } return checkURL(str, "git") } // IsGitTransport returns true if the provided str is a git transport by inspecting // the prefix of the string for known protocols used in git. func IsGitTransport(str string) bool { return IsURL(str) || strings.HasPrefix(str, "git://") || strings.HasPrefix(str, "git@") } // IsTransportURL returns true if the provided str is a transport (tcp, udp, unix) URL. func IsTransportURL(str string) bool { return checkURL(str, "transport") } func checkURL(str, kind string) bool { for _, prefix := range validPrefixes[kind] { if strings.HasPrefix(str, prefix) { return true } } return false }