diff options
Diffstat (limited to 'vendor/golang.org/x/net/lex')
-rw-r--r-- | vendor/golang.org/x/net/lex/httplex/httplex.go | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/vendor/golang.org/x/net/lex/httplex/httplex.go b/vendor/golang.org/x/net/lex/httplex/httplex.go index bd0ec24..20f2b89 100644 --- a/vendor/golang.org/x/net/lex/httplex/httplex.go +++ b/vendor/golang.org/x/net/lex/httplex/httplex.go @@ -10,8 +10,11 @@ package httplex import ( + "net" "strings" "unicode/utf8" + + "golang.org/x/net/idna" ) var isTokenTable = [127]bool{ @@ -310,3 +313,39 @@ func ValidHeaderFieldValue(v string) bool { } return true } + +func isASCII(s string) bool { + for i := 0; i < len(s); i++ { + if s[i] >= utf8.RuneSelf { + return false + } + } + return true +} + +// PunycodeHostPort returns the IDNA Punycode version +// of the provided "host" or "host:port" string. +func PunycodeHostPort(v string) (string, error) { + if isASCII(v) { + return v, nil + } + + host, port, err := net.SplitHostPort(v) + if err != nil { + // The input 'v' argument was just a "host" argument, + // without a port. This error should not be returned + // to the caller. + host = v + port = "" + } + host, err = idna.ToASCII(host) + if err != nil { + // Non-UTF-8? Not representable in Punycode, in any + // case. + return "", err + } + if port == "" { + return host, nil + } + return net.JoinHostPort(host, port), nil +} |