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113 lines
2.8 KiB
113 lines
2.8 KiB
// 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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"bytes" |
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"flag" |
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"fmt" |
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"io" |
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"log" |
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"reflect" |
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"sort" |
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"strings" |
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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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var versionList = flag.String("versions", "", |
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"list of versions for which to generate RangeTables") |
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const bootstrapMessage = `No versions specified. |
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To bootstrap the code generation, run: |
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go run gen.go --versions=4.1.0,5.0.0,6.0.0,6.1.0,6.2.0,6.3.0,7.0.0 |
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and ensure that the latest versions are included by checking: |
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http://www.unicode.org/Public/` |
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func getVersions() []string { |
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if *versionList == "" { |
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log.Fatal(bootstrapMessage) |
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} |
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versions := strings.Split(*versionList, ",") |
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sort.Strings(versions) |
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// Ensure that at least the current version is included. |
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for _, v := range versions { |
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if v == gen.UnicodeVersion() { |
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return versions |
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} |
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} |
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versions = append(versions, gen.UnicodeVersion()) |
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sort.Strings(versions) |
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return versions |
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} |
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func main() { |
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gen.Init() |
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versions := getVersions() |
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w := &bytes.Buffer{} |
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fmt.Fprintf(w, "//go:generate go run gen.go --versions=%s\n\n", strings.Join(versions, ",")) |
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fmt.Fprintf(w, "import \"unicode\"\n\n") |
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vstr := func(s string) string { return strings.Replace(s, ".", "_", -1) } |
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fmt.Fprintf(w, "var assigned = map[string]*unicode.RangeTable{\n") |
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for _, v := range versions { |
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fmt.Fprintf(w, "\t%q: assigned%s,\n", v, vstr(v)) |
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} |
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fmt.Fprintf(w, "}\n\n") |
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var size int |
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for _, v := range versions { |
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assigned := []rune{} |
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r := gen.Open("http://www.unicode.org/Public/", "", v+"/ucd/UnicodeData.txt") |
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ucd.Parse(r, func(p *ucd.Parser) { |
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assigned = append(assigned, p.Rune(0)) |
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}) |
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rt := rangetable.New(assigned...) |
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sz := int(reflect.TypeOf(unicode.RangeTable{}).Size()) |
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sz += int(reflect.TypeOf(unicode.Range16{}).Size()) * len(rt.R16) |
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sz += int(reflect.TypeOf(unicode.Range32{}).Size()) * len(rt.R32) |
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fmt.Fprintf(w, "// size %d bytes (%d KiB)\n", sz, sz/1024) |
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fmt.Fprintf(w, "var assigned%s = ", vstr(v)) |
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print(w, rt) |
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size += sz |
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} |
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fmt.Fprintf(w, "// Total size %d bytes (%d KiB)\n", size, size/1024) |
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gen.WriteGoFile("tables.go", "rangetable", w.Bytes()) |
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} |
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func print(w io.Writer, rt *unicode.RangeTable) { |
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fmt.Fprintln(w, "&unicode.RangeTable{") |
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fmt.Fprintln(w, "\tR16: []unicode.Range16{") |
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for _, r := range rt.R16 { |
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fmt.Fprintf(w, "\t\t{%#04x, %#04x, %d},\n", r.Lo, r.Hi, r.Stride) |
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} |
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fmt.Fprintln(w, "\t},") |
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fmt.Fprintln(w, "\tR32: []unicode.Range32{") |
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for _, r := range rt.R32 { |
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fmt.Fprintf(w, "\t\t{%#08x, %#08x, %d},\n", r.Lo, r.Hi, r.Stride) |
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} |
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fmt.Fprintln(w, "\t},") |
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fmt.Fprintf(w, "\tLatinOffset: %d,\n", rt.LatinOffset) |
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fmt.Fprintf(w, "}\n\n") |
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}
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