| // Copyright 2015 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. |
| |
| // +build ignore |
| |
| package main |
| |
| import ( |
| "bytes" |
| "encoding/xml" |
| "fmt" |
| "io" |
| "log" |
| "strings" |
| |
| "golang.org/x/text/internal/gen" |
| ) |
| |
| type registry struct { |
| XMLName xml.Name `xml:"registry"` |
| Updated string `xml:"updated"` |
| Registry []struct { |
| ID string `xml:"id,attr"` |
| Record []struct { |
| Name string `xml:"name"` |
| Xref []struct { |
| Type string `xml:"type,attr"` |
| Data string `xml:"data,attr"` |
| } `xml:"xref"` |
| Desc struct { |
| Data string `xml:",innerxml"` |
| // Any []struct { |
| // Data string `xml:",chardata"` |
| // } `xml:",any"` |
| // Data string `xml:",chardata"` |
| } `xml:"description,"` |
| MIB string `xml:"value"` |
| Alias []string `xml:"alias"` |
| MIME string `xml:"preferred_alias"` |
| } `xml:"record"` |
| } `xml:"registry"` |
| } |
| |
| func main() { |
| r := gen.OpenIANAFile("assignments/character-sets/character-sets.xml") |
| reg := ®istry{} |
| if err := xml.NewDecoder(r).Decode(®); err != nil && err != io.EOF { |
| log.Fatalf("Error decoding charset registry: %v", err) |
| } |
| if len(reg.Registry) == 0 || reg.Registry[0].ID != "character-sets-1" { |
| log.Fatalf("Unexpected ID %s", reg.Registry[0].ID) |
| } |
| |
| w := &bytes.Buffer{} |
| fmt.Fprintf(w, "const (\n") |
| for _, rec := range reg.Registry[0].Record { |
| constName := "" |
| for _, a := range rec.Alias { |
| if strings.HasPrefix(a, "cs") && strings.IndexByte(a, '-') == -1 { |
| // Some of the constant definitions have comments in them. Strip those. |
| constName = strings.Title(strings.SplitN(a[2:], "\n", 2)[0]) |
| } |
| } |
| if constName == "" { |
| switch rec.MIB { |
| case "2085": |
| constName = "HZGB2312" // Not listed as alias for some reason. |
| default: |
| log.Fatalf("No cs alias defined for %s.", rec.MIB) |
| } |
| } |
| if rec.MIME != "" { |
| rec.MIME = fmt.Sprintf(" (MIME: %s)", rec.MIME) |
| } |
| fmt.Fprintf(w, "// %s is the MIB identifier with IANA name %s%s.\n//\n", constName, rec.Name, rec.MIME) |
| if len(rec.Desc.Data) > 0 { |
| fmt.Fprint(w, "// ") |
| d := xml.NewDecoder(strings.NewReader(rec.Desc.Data)) |
| inElem := true |
| attr := "" |
| for { |
| t, err := d.Token() |
| if err != nil { |
| if err != io.EOF { |
| log.Fatal(err) |
| } |
| break |
| } |
| switch x := t.(type) { |
| case xml.CharData: |
| attr = "" // Don't need attribute info. |
| a := bytes.Split([]byte(x), []byte("\n")) |
| for i, b := range a { |
| if b = bytes.TrimSpace(b); len(b) != 0 { |
| if !inElem && i > 0 { |
| fmt.Fprint(w, "\n// ") |
| } |
| inElem = false |
| fmt.Fprintf(w, "%s ", string(b)) |
| } |
| } |
| case xml.StartElement: |
| if x.Name.Local == "xref" { |
| inElem = true |
| use := false |
| for _, a := range x.Attr { |
| if a.Name.Local == "type" { |
| use = use || a.Value != "person" |
| } |
| if a.Name.Local == "data" && use { |
| attr = a.Value + " " |
| } |
| } |
| } |
| case xml.EndElement: |
| inElem = false |
| fmt.Fprint(w, attr) |
| } |
| } |
| fmt.Fprint(w, "\n") |
| } |
| for _, x := range rec.Xref { |
| switch x.Type { |
| case "rfc": |
| fmt.Fprintf(w, "// Reference: %s\n", strings.ToUpper(x.Data)) |
| case "uri": |
| fmt.Fprintf(w, "// Reference: %s\n", x.Data) |
| } |
| } |
| fmt.Fprintf(w, "%s MIB = %s\n", constName, rec.MIB) |
| fmt.Fprintln(w) |
| } |
| fmt.Fprintln(w, ")") |
| |
| gen.WriteGoFile("mib.go", "identifier", w.Bytes()) |
| } |