gtsocial-umbx

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profiles.go (1655B)

      1 // Copyright 2015 The Go Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style
      3 // license that can be found in the LICENSE file.
      4 
      5 package precis
      6 
      7 import (
      8 	"unicode"
      9 
     10 	"golang.org/x/text/runes"
     11 	"golang.org/x/text/transform"
     12 	"golang.org/x/text/unicode/norm"
     13 )
     14 
     15 var (
     16 	// Implements the Nickname profile specified in RFC 8266.
     17 	Nickname *Profile = nickname
     18 
     19 	// Implements the UsernameCaseMapped profile specified in RFC 8265.
     20 	UsernameCaseMapped *Profile = usernameCaseMap
     21 
     22 	// Implements the UsernameCasePreserved profile specified in RFC 8265.
     23 	UsernameCasePreserved *Profile = usernameNoCaseMap
     24 
     25 	// Implements the OpaqueString profile defined in RFC 8265 for passwords and
     26 	// other secure labels.
     27 	OpaqueString *Profile = opaquestring
     28 )
     29 
     30 var (
     31 	nickname = &Profile{
     32 		options: getOpts(
     33 			AdditionalMapping(func() transform.Transformer {
     34 				return &nickAdditionalMapping{}
     35 			}),
     36 			IgnoreCase,
     37 			Norm(norm.NFKC),
     38 			DisallowEmpty,
     39 			repeat,
     40 		),
     41 		class: freeform,
     42 	}
     43 	usernameCaseMap = &Profile{
     44 		options: getOpts(
     45 			FoldWidth,
     46 			LowerCase(),
     47 			Norm(norm.NFC),
     48 			BidiRule,
     49 		),
     50 		class: identifier,
     51 	}
     52 	usernameNoCaseMap = &Profile{
     53 		options: getOpts(
     54 			FoldWidth,
     55 			Norm(norm.NFC),
     56 			BidiRule,
     57 		),
     58 		class: identifier,
     59 	}
     60 	opaquestring = &Profile{
     61 		options: getOpts(
     62 			AdditionalMapping(func() transform.Transformer {
     63 				return mapSpaces
     64 			}),
     65 			Norm(norm.NFC),
     66 			DisallowEmpty,
     67 		),
     68 		class: freeform,
     69 	}
     70 )
     71 
     72 // mapSpaces is a shared value of a runes.Map transformer.
     73 var mapSpaces transform.Transformer = runes.Map(func(r rune) rune {
     74 	if unicode.Is(unicode.Zs, r) {
     75 		return ' '
     76 	}
     77 	return r
     78 })