From 621e49bb465f500cc46d47e39e828cf76d6381d7 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Tue, 24 Jul 2018 14:35:44 +0200 Subject: update vendor --- vendor/golang.org/x/text/encoding/ianaindex/gen.go | 192 +++++++++++++++++++++ 1 file changed, 192 insertions(+) create mode 100644 vendor/golang.org/x/text/encoding/ianaindex/gen.go (limited to 'vendor/golang.org/x/text/encoding/ianaindex/gen.go') diff --git a/vendor/golang.org/x/text/encoding/ianaindex/gen.go b/vendor/golang.org/x/text/encoding/ianaindex/gen.go new file mode 100644 index 0000000..1b61b82 --- /dev/null +++ b/vendor/golang.org/x/text/encoding/ianaindex/gen.go @@ -0,0 +1,192 @@ +// Copyright 2017 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 ( + "encoding/xml" + "fmt" + "io" + "log" + "sort" + "strconv" + "strings" + + "golang.org/x/text/encoding/internal/identifier" + "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"` + } `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) + } + + x := &indexInfo{} + + for _, rec := range reg.Registry[0].Record { + mib := identifier.MIB(parseInt(rec.MIB)) + x.addEntry(mib, rec.Name) + for _, a := range rec.Alias { + a = strings.Split(a, " ")[0] // strip comments. + x.addAlias(a, mib) + // MIB name aliases are prefixed with a "cs" (character set) in the + // registry to identify them as display names and to ensure that + // the name starts with a lowercase letter in case it is used as + // an identifier. We remove it to be left with a nice clean name. + if strings.HasPrefix(a, "cs") { + x.setName(2, a[2:]) + } + } + if rec.MIME != "" { + x.addAlias(rec.MIME, mib) + x.setName(1, rec.MIME) + } + } + + w := gen.NewCodeWriter() + + fmt.Fprintln(w, `import "golang.org/x/text/encoding/internal/identifier"`) + + writeIndex(w, x) + + w.WriteGoFile("tables.go", "ianaindex") +} + +type alias struct { + name string + mib identifier.MIB +} + +type indexInfo struct { + // compacted index from code to MIB + codeToMIB []identifier.MIB + alias []alias + names [][3]string +} + +func (ii *indexInfo) Len() int { + return len(ii.codeToMIB) +} + +func (ii *indexInfo) Less(a, b int) bool { + return ii.codeToMIB[a] < ii.codeToMIB[b] +} + +func (ii *indexInfo) Swap(a, b int) { + ii.codeToMIB[a], ii.codeToMIB[b] = ii.codeToMIB[b], ii.codeToMIB[a] + // Co-sort the names. + ii.names[a], ii.names[b] = ii.names[b], ii.names[a] +} + +func (ii *indexInfo) setName(i int, name string) { + ii.names[len(ii.names)-1][i] = name +} + +func (ii *indexInfo) addEntry(mib identifier.MIB, name string) { + ii.names = append(ii.names, [3]string{name, name, name}) + ii.addAlias(name, mib) + ii.codeToMIB = append(ii.codeToMIB, mib) +} + +func (ii *indexInfo) addAlias(name string, mib identifier.MIB) { + // Don't add duplicates for the same mib. Adding duplicate aliases for + // different MIBs will cause the compiler to barf on an invalid map: great!. + for i := len(ii.alias) - 1; i >= 0 && ii.alias[i].mib == mib; i-- { + if ii.alias[i].name == name { + return + } + } + ii.alias = append(ii.alias, alias{name, mib}) + lower := strings.ToLower(name) + if lower != name { + ii.addAlias(lower, mib) + } +} + +const maxMIMENameLen = '0' - 1 // officially 40, but we leave some buffer. + +func writeIndex(w *gen.CodeWriter, x *indexInfo) { + sort.Stable(x) + + // Write constants. + fmt.Fprintln(w, "const (") + for i, m := range x.codeToMIB { + if i == 0 { + fmt.Fprintf(w, "enc%d = iota\n", m) + } else { + fmt.Fprintf(w, "enc%d\n", m) + } + } + fmt.Fprintln(w, "numIANA") + fmt.Fprintln(w, ")") + + w.WriteVar("ianaToMIB", x.codeToMIB) + + var ianaNames, mibNames []string + for _, names := range x.names { + n := names[0] + if names[0] != names[1] { + // MIME names are mostly identical to IANA names. We share the + // tables by setting the first byte of the string to an index into + // the string itself (< maxMIMENameLen) to the IANA name. The MIME + // name immediately follows the index. + x := len(names[1]) + 1 + if x > maxMIMENameLen { + log.Fatalf("MIME name length (%d) > %d", x, maxMIMENameLen) + } + n = string(x) + names[1] + names[0] + } + ianaNames = append(ianaNames, n) + mibNames = append(mibNames, names[2]) + } + + w.WriteVar("ianaNames", ianaNames) + w.WriteVar("mibNames", mibNames) + + w.WriteComment(` + TODO: Instead of using a map, we could use binary search strings doing + on-the fly lower-casing per character. This allows to always avoid + allocation and will be considerably more compact.`) + fmt.Fprintln(w, "var ianaAliases = map[string]int{") + for _, a := range x.alias { + fmt.Fprintf(w, "%q: enc%d,\n", a.name, a.mib) + } + fmt.Fprintln(w, "}") +} + +func parseInt(s string) int { + x, err := strconv.ParseInt(s, 10, 64) + if err != nil { + log.Fatalf("Could not parse integer: %v", err) + } + return int(x) +} -- cgit v1.2.3