example_test.go

Documentation: golang.org/x/text/runes

     1  // Copyright 2014 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 runes_test
     6  
     7  import (
     8  	"fmt"
     9  	"unicode"
    10  
    11  	"golang.org/x/text/runes"
    12  	"golang.org/x/text/transform"
    13  	"golang.org/x/text/unicode/norm"
    14  	"golang.org/x/text/width"
    15  )
    16  
    17  func ExampleRemove() {
    18  	t := transform.Chain(norm.NFD, runes.Remove(runes.In(unicode.Mn)), norm.NFC)
    19  	s, _, _ := transform.String(t, "résumé")
    20  	fmt.Println(s)
    21  
    22  	// Output:
    23  	// resume
    24  }
    25  
    26  func ExampleMap() {
    27  	replaceHyphens := runes.Map(func(r rune) rune {
    28  		if unicode.Is(unicode.Hyphen, r) {
    29  			return '|'
    30  		}
    31  		return r
    32  	})
    33  	s, _, _ := transform.String(replaceHyphens, "a-b‐c⸗d﹣e")
    34  	fmt.Println(s)
    35  
    36  	// Output:
    37  	// a|b|c|d|e
    38  }
    39  
    40  func ExampleIn() {
    41  	// Convert Latin characters to their canonical form, while keeping other
    42  	// width distinctions.
    43  	t := runes.If(runes.In(unicode.Latin), width.Fold, nil)
    44  	s, _, _ := transform.String(t, "ｱﾙｱﾉﾘｳ tech / アルアノリウ ｔｅｃｈ")
    45  	fmt.Println(s)
    46  
    47  	// Output:
    48  	// ｱﾙｱﾉﾘｳ tech / アルアノリウ tech
    49  }
    50  
    51  func ExampleIf() {
    52  	// Widen everything but ASCII.
    53  	isASCII := func(r rune) bool { return r <= unicode.MaxASCII }
    54  	t := runes.If(runes.Predicate(isASCII), nil, width.Widen)
    55  	s, _, _ := transform.String(t, "ｱﾙｱﾉﾘｳ tech / 中國 / 5₩")
    56  	fmt.Println(s)
    57  
    58  	// Output:
    59  	// アルアノリウ tech / 中國 / 5￦
    60  }
    61
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