114 lines
2.8 KiB
Go
114 lines
2.8 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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// +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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