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