src/cmd/nncp-cfgdir/main.go

   1 /*
   2 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
   3 Copyright (C) 2016-2023 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         "log"
  25         "os"
  26
  27         "github.com/hjson/hjson-go"
  28         "go.cypherpunks.ru/nncp/v8"
  29 )
  30
  31 func usage() {
  32         fmt.Fprint(os.Stderr, "nncp-cfgdir -- Convert configuration file to the directory layout.\n\n")
  33         fmt.Fprintf(os.Stderr, "Usage: %s [options] [-cfg ...] -dump /path/to/dir\n", os.Args[0])
  34         fmt.Fprintf(os.Stderr, "       %s [options] -load /path/to/dir > cfg.hjson\nOptions:\n", os.Args[0])
  35         flag.PrintDefaults()
  36 }
  37
  38 func main() {
  39         var (
  40                 doDump   = flag.Bool("dump", false, "Dump configuration file to the directory")
  41                 doLoad   = flag.Bool("load", false, "Load directory to create configuration file")
  42                 cfgPath  = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
  43                 version  = flag.Bool("version", false, "Print version information")
  44                 warranty = flag.Bool("warranty", false, "Print warranty information")
  45         )
  46         log.SetFlags(log.Lshortfile)
  47         flag.Usage = usage
  48         flag.Parse()
  49         if *warranty {
  50                 fmt.Println(nncp.Warranty)
  51                 return
  52         }
  53         if *version {
  54                 fmt.Println(nncp.VersionGet())
  55                 return
  56         }
  57
  58         if (!*doDump && !*doLoad) || flag.NArg() != 1 {
  59                 usage()
  60                 os.Exit(1)
  61         }
  62
  63         if *doDump {
  64                 cfgRaw, err := os.ReadFile(*cfgPath)
  65                 if err != nil {
  66                         log.Fatalln(err)
  67                 }
  68                 cfg, err := nncp.CfgParse(cfgRaw)
  69                 if err != nil {
  70                         log.Fatalln(err)
  71                 }
  72                 if err = nncp.CfgToDir(flag.Arg(0), cfg); err != nil {
  73                         log.Fatalln(err)
  74                 }
  75         }
  76         if *doLoad {
  77                 cfg, err := nncp.DirToCfg(flag.Arg(0))
  78                 if err != nil {
  79                         log.Fatalln(err)
  80                 }
  81                 if _, err = nncp.Cfg2Ctx(cfg); err != nil {
  82                         log.Fatalln(err)
  83                 }
  84                 marshaled, err := hjson.MarshalWithOptions(cfg, hjson.EncoderOptions{
  85                         Eol:            "\n",
  86                         BracesSameLine: true,
  87                         QuoteAlways:    false,
  88                         IndentBy:       "  ",
  89                         AllowMinusZero: false,
  90                 })
  91                 if err != nil {
  92                         log.Fatalln(err)
  93                 }
  94                 os.Stdout.Write(marshaled)
  95                 os.Stdout.WriteString("\n")
  96         }
  97 }