mirror of
https://github.com/k3s-io/k3s.git
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125 lines
2.9 KiB
Go
125 lines
2.9 KiB
Go
// Copyright 2013 ChaiShushan <chaishushan{AT}gmail.com>. 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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package mo
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import (
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"bytes"
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"encoding/binary"
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"sort"
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"strings"
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)
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type moHeader struct {
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MagicNumber uint32
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MajorVersion uint16
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MinorVersion uint16
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MsgIdCount uint32
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MsgIdOffset uint32
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MsgStrOffset uint32
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HashSize uint32
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HashOffset uint32
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}
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type moStrPos struct {
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Size uint32 // must keep fields order
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Addr uint32
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}
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func encodeFile(f *File) []byte {
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hdr := &moHeader{
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MagicNumber: MoMagicLittleEndian,
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}
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data := encodeData(hdr, f)
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data = append(encodeHeader(hdr), data...)
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return data
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}
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// encode data and init moHeader
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func encodeData(hdr *moHeader, f *File) []byte {
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msgList := []Message{f.MimeHeader.toMessage()}
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for _, v := range f.Messages {
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if len(v.MsgId) == 0 {
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continue
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}
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if len(v.MsgStr) == 0 && len(v.MsgStrPlural) == 0 {
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continue
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}
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msgList = append(msgList, v)
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}
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sort.Sort(byMessages(msgList))
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var buf bytes.Buffer
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var msgIdPosList = make([]moStrPos, len(msgList))
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var msgStrPosList = make([]moStrPos, len(msgList))
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for i, v := range msgList {
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// write msgid
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msgId := encodeMsgId(v)
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msgIdPosList[i].Addr = uint32(buf.Len() + MoHeaderSize)
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msgIdPosList[i].Size = uint32(len(msgId))
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buf.WriteString(msgId)
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// write msgstr
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msgStr := encodeMsgStr(v)
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msgStrPosList[i].Addr = uint32(buf.Len() + MoHeaderSize)
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msgStrPosList[i].Size = uint32(len(msgStr))
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buf.WriteString(msgStr)
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}
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hdr.MsgIdOffset = uint32(buf.Len() + MoHeaderSize)
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binary.Write(&buf, binary.LittleEndian, msgIdPosList)
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hdr.MsgStrOffset = uint32(buf.Len() + MoHeaderSize)
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binary.Write(&buf, binary.LittleEndian, msgStrPosList)
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hdr.MsgIdCount = uint32(len(msgList))
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return buf.Bytes()
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}
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// must called after encodeData
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func encodeHeader(hdr *moHeader) []byte {
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var buf bytes.Buffer
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binary.Write(&buf, binary.LittleEndian, hdr)
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return buf.Bytes()
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}
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func encodeMsgId(v Message) string {
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if v.MsgContext != "" && v.MsgIdPlural != "" {
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return v.MsgContext + EotSeparator + v.MsgId + NulSeparator + v.MsgIdPlural
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}
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if v.MsgContext != "" && v.MsgIdPlural == "" {
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return v.MsgContext + EotSeparator + v.MsgId
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}
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if v.MsgContext == "" && v.MsgIdPlural != "" {
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return v.MsgId + NulSeparator + v.MsgIdPlural
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}
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return v.MsgId
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}
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func encodeMsgStr(v Message) string {
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if v.MsgIdPlural != "" {
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return strings.Join(v.MsgStrPlural, NulSeparator)
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}
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return v.MsgStr
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}
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type byMessages []Message
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func (d byMessages) Len() int {
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return len(d)
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}
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func (d byMessages) Less(i, j int) bool {
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if a, b := d[i].MsgContext, d[j].MsgContext; a != b {
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return a < b
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}
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if a, b := d[i].MsgId, d[j].MsgId; a != b {
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return a < b
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}
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if a, b := d[i].MsgIdPlural, d[j].MsgIdPlural; a != b {
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return a < b
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}
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return false
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}
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func (d byMessages) Swap(i, j int) {
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d[i], d[j] = d[j], d[i]
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}
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