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58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
// 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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// +build ignore
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package main
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import (
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"unicode"
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"golang.org/x/text/internal/gen"
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"golang.org/x/text/internal/ucd"
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"golang.org/x/text/unicode/rangetable"
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)
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// These tables are hand-extracted from:
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// https://www.unicode.org/Public/8.0.0/ucd/extracted/DerivedBidiClass.txt
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func visitDefaults(fn func(r rune, c Class)) {
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// first write default values for ranges listed above.
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visitRunes(fn, AL, []rune{
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0x0600, 0x07BF, // Arabic
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0x08A0, 0x08FF, // Arabic Extended-A
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0xFB50, 0xFDCF, // Arabic Presentation Forms
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0xFDF0, 0xFDFF,
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0xFE70, 0xFEFF,
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0x0001EE00, 0x0001EEFF, // Arabic Mathematical Alpha Symbols
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})
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visitRunes(fn, R, []rune{
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0x0590, 0x05FF, // Hebrew
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0x07C0, 0x089F, // Nko et al.
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0xFB1D, 0xFB4F,
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0x00010800, 0x00010FFF, // Cypriot Syllabary et. al.
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0x0001E800, 0x0001EDFF,
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0x0001EF00, 0x0001EFFF,
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})
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visitRunes(fn, ET, []rune{ // European Terminator
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0x20A0, 0x20Cf, // Currency symbols
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})
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rangetable.Visit(unicode.Noncharacter_Code_Point, func(r rune) {
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fn(r, BN) // Boundary Neutral
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})
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ucd.Parse(gen.OpenUCDFile("DerivedCoreProperties.txt"), func(p *ucd.Parser) {
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if p.String(1) == "Default_Ignorable_Code_Point" {
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fn(p.Rune(0), BN) // Boundary Neutral
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}
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})
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}
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func visitRunes(fn func(r rune, c Class), c Class, runes []rune) {
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for i := 0; i < len(runes); i += 2 {
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lo, hi := runes[i], runes[i+1]
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for j := lo; j <= hi; j++ {
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fn(j, c)
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}
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}
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}
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