Matthias Andreas Benkard | 832a54e | 2019-01-29 09:27:38 +0100 | [diff] [blame] | 1 | // Copyright 2015 The Go Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | // +build ignore |
| 6 | |
| 7 | package main |
| 8 | |
| 9 | import ( |
| 10 | "bytes" |
| 11 | "encoding/xml" |
| 12 | "fmt" |
| 13 | "io" |
| 14 | "log" |
| 15 | "strings" |
| 16 | |
| 17 | "golang.org/x/text/internal/gen" |
| 18 | ) |
| 19 | |
| 20 | type registry struct { |
| 21 | XMLName xml.Name `xml:"registry"` |
| 22 | Updated string `xml:"updated"` |
| 23 | Registry []struct { |
| 24 | ID string `xml:"id,attr"` |
| 25 | Record []struct { |
| 26 | Name string `xml:"name"` |
| 27 | Xref []struct { |
| 28 | Type string `xml:"type,attr"` |
| 29 | Data string `xml:"data,attr"` |
| 30 | } `xml:"xref"` |
| 31 | Desc struct { |
| 32 | Data string `xml:",innerxml"` |
| 33 | // Any []struct { |
| 34 | // Data string `xml:",chardata"` |
| 35 | // } `xml:",any"` |
| 36 | // Data string `xml:",chardata"` |
| 37 | } `xml:"description,"` |
| 38 | MIB string `xml:"value"` |
| 39 | Alias []string `xml:"alias"` |
| 40 | MIME string `xml:"preferred_alias"` |
| 41 | } `xml:"record"` |
| 42 | } `xml:"registry"` |
| 43 | } |
| 44 | |
| 45 | func main() { |
| 46 | r := gen.OpenIANAFile("assignments/character-sets/character-sets.xml") |
| 47 | reg := ®istry{} |
| 48 | if err := xml.NewDecoder(r).Decode(®); err != nil && err != io.EOF { |
| 49 | log.Fatalf("Error decoding charset registry: %v", err) |
| 50 | } |
| 51 | if len(reg.Registry) == 0 || reg.Registry[0].ID != "character-sets-1" { |
| 52 | log.Fatalf("Unexpected ID %s", reg.Registry[0].ID) |
| 53 | } |
| 54 | |
| 55 | w := &bytes.Buffer{} |
| 56 | fmt.Fprintf(w, "const (\n") |
| 57 | for _, rec := range reg.Registry[0].Record { |
| 58 | constName := "" |
| 59 | for _, a := range rec.Alias { |
| 60 | if strings.HasPrefix(a, "cs") && strings.IndexByte(a, '-') == -1 { |
| 61 | // Some of the constant definitions have comments in them. Strip those. |
| 62 | constName = strings.Title(strings.SplitN(a[2:], "\n", 2)[0]) |
| 63 | } |
| 64 | } |
| 65 | if constName == "" { |
| 66 | switch rec.MIB { |
| 67 | case "2085": |
| 68 | constName = "HZGB2312" // Not listed as alias for some reason. |
| 69 | default: |
| 70 | log.Fatalf("No cs alias defined for %s.", rec.MIB) |
| 71 | } |
| 72 | } |
| 73 | if rec.MIME != "" { |
| 74 | rec.MIME = fmt.Sprintf(" (MIME: %s)", rec.MIME) |
| 75 | } |
| 76 | fmt.Fprintf(w, "// %s is the MIB identifier with IANA name %s%s.\n//\n", constName, rec.Name, rec.MIME) |
| 77 | if len(rec.Desc.Data) > 0 { |
| 78 | fmt.Fprint(w, "// ") |
| 79 | d := xml.NewDecoder(strings.NewReader(rec.Desc.Data)) |
| 80 | inElem := true |
| 81 | attr := "" |
| 82 | for { |
| 83 | t, err := d.Token() |
| 84 | if err != nil { |
| 85 | if err != io.EOF { |
| 86 | log.Fatal(err) |
| 87 | } |
| 88 | break |
| 89 | } |
| 90 | switch x := t.(type) { |
| 91 | case xml.CharData: |
| 92 | attr = "" // Don't need attribute info. |
| 93 | a := bytes.Split([]byte(x), []byte("\n")) |
| 94 | for i, b := range a { |
| 95 | if b = bytes.TrimSpace(b); len(b) != 0 { |
| 96 | if !inElem && i > 0 { |
| 97 | fmt.Fprint(w, "\n// ") |
| 98 | } |
| 99 | inElem = false |
| 100 | fmt.Fprintf(w, "%s ", string(b)) |
| 101 | } |
| 102 | } |
| 103 | case xml.StartElement: |
| 104 | if x.Name.Local == "xref" { |
| 105 | inElem = true |
| 106 | use := false |
| 107 | for _, a := range x.Attr { |
| 108 | if a.Name.Local == "type" { |
| 109 | use = use || a.Value != "person" |
| 110 | } |
| 111 | if a.Name.Local == "data" && use { |
| 112 | attr = a.Value + " " |
| 113 | } |
| 114 | } |
| 115 | } |
| 116 | case xml.EndElement: |
| 117 | inElem = false |
| 118 | fmt.Fprint(w, attr) |
| 119 | } |
| 120 | } |
| 121 | fmt.Fprint(w, "\n") |
| 122 | } |
| 123 | for _, x := range rec.Xref { |
| 124 | switch x.Type { |
| 125 | case "rfc": |
| 126 | fmt.Fprintf(w, "// Reference: %s\n", strings.ToUpper(x.Data)) |
| 127 | case "uri": |
| 128 | fmt.Fprintf(w, "// Reference: %s\n", x.Data) |
| 129 | } |
| 130 | } |
| 131 | fmt.Fprintf(w, "%s MIB = %s\n", constName, rec.MIB) |
| 132 | fmt.Fprintln(w) |
| 133 | } |
| 134 | fmt.Fprintln(w, ")") |
| 135 | |
| 136 | gen.WriteGoFile("mib.go", "identifier", w.Bytes()) |
| 137 | } |