Retro68/gcc/libgo/go/unicode/example_test.go
2017-04-10 13:32:00 +02:00

197 lines
4.1 KiB
Go
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package unicode_test
import (
"fmt"
"unicode"
)
// Functions starting with "Is" can be used to inspect which table of range a
// rune belongs to. Note that runes may fit into more than one range.
func Example_is() {
// constant with mixed type runes
const mixed = "\b5Ὂg̀9! ℃ᾭG"
for _, c := range mixed {
fmt.Printf("For %q:\n", c)
if unicode.IsControl(c) {
fmt.Println("\tis control rune")
}
if unicode.IsDigit(c) {
fmt.Println("\tis digit rune")
}
if unicode.IsGraphic(c) {
fmt.Println("\tis graphic rune")
}
if unicode.IsLetter(c) {
fmt.Println("\tis letter rune")
}
if unicode.IsLower(c) {
fmt.Println("\tis lower case rune")
}
if unicode.IsMark(c) {
fmt.Println("\tis mark rune")
}
if unicode.IsNumber(c) {
fmt.Println("\tis number rune")
}
if unicode.IsPrint(c) {
fmt.Println("\tis printable rune")
}
if !unicode.IsPrint(c) {
fmt.Println("\tis not printable rune")
}
if unicode.IsPunct(c) {
fmt.Println("\tis punct rune")
}
if unicode.IsSpace(c) {
fmt.Println("\tis space rune")
}
if unicode.IsSymbol(c) {
fmt.Println("\tis symbol rune")
}
if unicode.IsTitle(c) {
fmt.Println("\tis title case rune")
}
if unicode.IsUpper(c) {
fmt.Println("\tis upper case rune")
}
}
// Output:
// For '\b':
// is control rune
// is not printable rune
// For '5':
// is digit rune
// is graphic rune
// is number rune
// is printable rune
// For 'Ὂ':
// is graphic rune
// is letter rune
// is printable rune
// is upper case rune
// For 'g':
// is graphic rune
// is letter rune
// is lower case rune
// is printable rune
// For '̀':
// is graphic rune
// is mark rune
// is printable rune
// For '9':
// is digit rune
// is graphic rune
// is number rune
// is printable rune
// For '!':
// is graphic rune
// is printable rune
// is punct rune
// For ' ':
// is graphic rune
// is printable rune
// is space rune
// For '℃':
// is graphic rune
// is printable rune
// is symbol rune
// For 'ᾭ':
// is graphic rune
// is letter rune
// is printable rune
// is title case rune
// For 'G':
// is graphic rune
// is letter rune
// is printable rune
// is upper case rune
}
func ExampleSimpleFold() {
fmt.Printf("%#U\n", unicode.SimpleFold('A')) // 'a'
fmt.Printf("%#U\n", unicode.SimpleFold('a')) // 'A'
fmt.Printf("%#U\n", unicode.SimpleFold('K')) // 'k'
fmt.Printf("%#U\n", unicode.SimpleFold('k')) // '\u212A' (Kelvin symbol, )
fmt.Printf("%#U\n", unicode.SimpleFold('\u212A')) // 'K'
fmt.Printf("%#U\n", unicode.SimpleFold('1')) // '1'
// Output:
// U+0061 'a'
// U+0041 'A'
// U+006B 'k'
// U+212A ''
// U+004B 'K'
// U+0031 '1'
}
func ExampleTo() {
const lcG = 'g'
fmt.Printf("%#U\n", unicode.To(unicode.UpperCase, lcG))
fmt.Printf("%#U\n", unicode.To(unicode.LowerCase, lcG))
fmt.Printf("%#U\n", unicode.To(unicode.TitleCase, lcG))
const ucG = 'G'
fmt.Printf("%#U\n", unicode.To(unicode.UpperCase, ucG))
fmt.Printf("%#U\n", unicode.To(unicode.LowerCase, ucG))
fmt.Printf("%#U\n", unicode.To(unicode.TitleCase, ucG))
// Output:
// U+0047 'G'
// U+0067 'g'
// U+0047 'G'
// U+0047 'G'
// U+0067 'g'
// U+0047 'G'
}
func ExampleToLower() {
const ucG = 'G'
fmt.Printf("%#U\n", unicode.ToLower(ucG))
// Output:
// U+0067 'g'
}
func ExampleToTitle() {
const ucG = 'g'
fmt.Printf("%#U\n", unicode.ToTitle(ucG))
// Output:
// U+0047 'G'
}
func ExampleToUpper() {
const ucG = 'g'
fmt.Printf("%#U\n", unicode.ToUpper(ucG))
// Output:
// U+0047 'G'
}
func ExampleSpecialCase() {
t := unicode.TurkishCase
const lci = 'i'
fmt.Printf("%#U\n", t.ToLower(lci))
fmt.Printf("%#U\n", t.ToTitle(lci))
fmt.Printf("%#U\n", t.ToUpper(lci))
const uci = 'İ'
fmt.Printf("%#U\n", t.ToLower(uci))
fmt.Printf("%#U\n", t.ToTitle(uci))
fmt.Printf("%#U\n", t.ToUpper(uci))
// Output:
// U+0069 'i'
// U+0130 'İ'
// U+0130 'İ'
// U+0069 'i'
// U+0130 'İ'
// U+0130 'İ'
}