github.com/kovansky/hugo@v0.92.3-0.20220224232819-63076e4ff19f/common/text/transform.go (about)

     1  // Copyright 2019 The Hugo Authors. All rights reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  // http://www.apache.org/licenses/LICENSE-2.0
     7  //
     8  // Unless required by applicable law or agreed to in writing, software
     9  // distributed under the License is distributed on an "AS IS" BASIS,
    10  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package text
    15  
    16  import (
    17  	"sync"
    18  	"unicode"
    19  
    20  	"golang.org/x/text/runes"
    21  	"golang.org/x/text/transform"
    22  	"golang.org/x/text/unicode/norm"
    23  )
    24  
    25  var accentTransformerPool = &sync.Pool{
    26  	New: func() interface{} {
    27  		return transform.Chain(norm.NFD, runes.Remove(runes.In(unicode.Mn)), norm.NFC)
    28  	},
    29  }
    30  
    31  // RemoveAccents removes all accents from b.
    32  func RemoveAccents(b []byte) []byte {
    33  	t := accentTransformerPool.Get().(transform.Transformer)
    34  	b, _, _ = transform.Bytes(t, b)
    35  	t.Reset()
    36  	accentTransformerPool.Put(t)
    37  	return b
    38  }
    39  
    40  // RemoveAccentsString removes all accents from s.
    41  func RemoveAccentsString(s string) string {
    42  	t := accentTransformerPool.Get().(transform.Transformer)
    43  	s, _, _ = transform.String(t, s)
    44  	t.Reset()
    45  	accentTransformerPool.Put(t)
    46  	return s
    47  }