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// Copyright 2014 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 ucd_test
import (
"fmt"
"strings"
"golang.org/x/text/internal/ucd"
)
func Example() {
// Read rune-by-rune from UnicodeData.
var count int
p := ucd.New(strings.NewReader(unicodeData))
for p.Next() {
count++
if lower := p.Runes(ucd.SimpleLowercaseMapping); lower != nil {
fmt.Printf("lower(%U) -> %U\n", p.Rune(0), lower[0])
}
}
if err := p.Err(); err != nil {
fmt.Println(err)
}
fmt.Println("Number of runes visited:", count)
// Read raw ranges from Scripts.
p = ucd.New(strings.NewReader(scripts), ucd.KeepRanges)
for p.Next() {
start, end := p.Range(0)
fmt.Printf("%04X..%04X: %s\n", start, end, p.String(1))
}
if err := p.Err(); err != nil {
fmt.Println(err)
}
// Output:
// lower(U+00C0) -> U+00E0
// lower(U+00C1) -> U+00E1
// lower(U+00C2) -> U+00E2
// lower(U+00C3) -> U+00E3
// lower(U+00C4) -> U+00E4
// Number of runes visited: 6594
// 0000..001F: Common
// 0020..0020: Common
// 0021..0023: Common
// 0024..0024: Common
}
// Excerpt from UnicodeData.txt
const unicodeData = `
00B9;SUPERSCRIPT ONE;No;0;EN;<super> 0031;;1;1;N;SUPERSCRIPT DIGIT ONE;;;;
00BA;MASCULINE ORDINAL INDICATOR;Lo;0;L;<super> 006F;;;;N;;;;;
00BB;RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK;Pf;0;ON;;;;;Y;RIGHT POINTING GUILLEMET;;;;
00BC;VULGAR FRACTION ONE QUARTER;No;0;ON;<fraction> 0031 2044 0034;;;1/4;N;FRACTION ONE QUARTER;;;;
00BD;VULGAR FRACTION ONE HALF;No;0;ON;<fraction> 0031 2044 0032;;;1/2;N;FRACTION ONE HALF;;;;
00BE;VULGAR FRACTION THREE QUARTERS;No;0;ON;<fraction> 0033 2044 0034;;;3/4;N;FRACTION THREE QUARTERS;;;;
00BF;INVERTED QUESTION MARK;Po;0;ON;;;;;N;;;;;
00C0;LATIN CAPITAL LETTER A WITH GRAVE;Lu;0;L;0041 0300;;;;N;LATIN CAPITAL LETTER A GRAVE;;;00E0;
00C1;LATIN CAPITAL LETTER A WITH ACUTE;Lu;0;L;0041 0301;;;;N;LATIN CAPITAL LETTER A ACUTE;;;00E1;
00C2;LATIN CAPITAL LETTER A WITH CIRCUMFLEX;Lu;0;L;0041 0302;;;;N;LATIN CAPITAL LETTER A CIRCUMFLEX;;;00E2;
00C3;LATIN CAPITAL LETTER A WITH TILDE;Lu;0;L;0041 0303;;;;N;LATIN CAPITAL LETTER A TILDE;;;00E3;
00C4;LATIN CAPITAL LETTER A WITH DIAERESIS;Lu;0;L;0041 0308;;;;N;LATIN CAPITAL LETTER A DIAERESIS;;;00E4;
# A legacy rune range.
3400;<CJK Ideograph Extension A, First>;Lo;0;L;;;;;N;;;;;
4DB5;<CJK Ideograph Extension A, Last>;Lo;0;L;;;;;N;;;;;
`
// Excerpt from Scripts.txt
const scripts = `
# Property: Script
# ================================================
0000..001F ; Common # Cc [32] <control-0000>..<control-001F>
0020 ; Common # Zs SPACE
0021..0023 ; Common # Po [3] EXCLAMATION MARK..NUMBER SIGN
0024 ; Common # Sc DOLLAR SIGN
`
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