src/cmd/nncp-cfgdir/main.go

   1 /*
   2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
   3 Copyright (C) 2016-2022 Sergey Matveev <stargrave@stargrave.org>
   4
   5 This program is free software: you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation, version 3 of the License.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18 // Convert NNCP Hjson configuration file to the directory layout.
  19 package main
  20
  21 import (
  22         "flag"
  23         "fmt"
  24         "io/ioutil"
  25         "log"
  26         "os"
  27
  28         "github.com/hjson/hjson-go"
  29         "go.cypherpunks.ru/nncp/v8"
  30 )
  31
  32 func usage() {
  33         fmt.Fprintf(os.Stderr, nncp.UsageHeader())
  34         fmt.Fprintf(os.Stderr, "nncp-cfgdir -- Convert configuration file to the directory layout.\n\n")
  35         fmt.Fprintf(os.Stderr, "Usage: %s [options] [-cfg ...] -dump /path/to/dir\n", os.Args[0])
  36         fmt.Fprintf(os.Stderr, "       %s [options] -load /path/to/dir > cfg.hjson\nOptions:\n", os.Args[0])
  37         flag.PrintDefaults()
  38 }
  39
  40 func main() {
  41         var (
  42                 doDump   = flag.Bool("dump", false, "Dump configuration file to the directory")
  43                 doLoad   = flag.Bool("load", false, "Load directory to create configuration file")
  44                 cfgPath  = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
  45                 version  = flag.Bool("version", false, "Print version information")
  46                 warranty = flag.Bool("warranty", false, "Print warranty information")
  47         )
  48         log.SetFlags(log.Lshortfile)
  49         flag.Usage = usage
  50         flag.Parse()
  51         if *warranty {
  52                 fmt.Println(nncp.Warranty)
  53                 return
  54         }
  55         if *version {
  56                 fmt.Println(nncp.VersionGet())
  57                 return
  58         }
  59
  60         if (!*doDump && !*doLoad) || flag.NArg() != 1 {
  61                 usage()
  62                 os.Exit(1)
  63         }
  64
  65         if *doDump {
  66                 cfgRaw, err := ioutil.ReadFile(*cfgPath)
  67                 if err != nil {
  68                         log.Fatalln(err)
  69                 }
  70                 cfg, err := nncp.CfgParse(cfgRaw)
  71                 if err != nil {
  72                         log.Fatalln(err)
  73                 }
  74                 if err = nncp.CfgToDir(flag.Arg(0), cfg); err != nil {
  75                         log.Fatalln(err)
  76                 }
  77         }
  78         if *doLoad {
  79                 cfg, err := nncp.DirToCfg(flag.Arg(0))
  80                 if err != nil {
  81                         log.Fatalln(err)
  82                 }
  83                 if _, err = nncp.Cfg2Ctx(cfg); err != nil {
  84                         log.Fatalln(err)
  85                 }
  86                 marshaled, err := hjson.MarshalWithOptions(cfg, hjson.EncoderOptions{
  87                         Eol:            "\n",
  88                         BracesSameLine: true,
  89                         QuoteAlways:    false,
  90                         IndentBy:       "  ",
  91                         AllowMinusZero: false,
  92                 })
  93                 if err != nil {
  94                         log.Fatalln(err)
  95                 }
  96                 os.Stdout.Write(marshaled)
  97                 os.Stdout.WriteString("\n")
  98         }
  99 }