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.UsageHeader())
  33         fmt.Fprint(os.Stderr, "nncp-cfgdir -- Convert configuration file to the directory layout.\n\n")
  34         fmt.Fprintf(os.Stderr, "Usage: %s [options] [-cfg ...] -dump /path/to/dir\n", os.Args[0])
  35         fmt.Fprintf(os.Stderr, "       %s [options] -load /path/to/dir > cfg.hjson\nOptions:\n", os.Args[0])
  36         flag.PrintDefaults()
  37 }
  38
  39 func main() {
  40         var (
  41                 doDump   = flag.Bool("dump", false, "Dump configuration file to the directory")
  42                 doLoad   = flag.Bool("load", false, "Load directory to create configuration file")
  43                 cfgPath  = flag.String("cfg", nncp.DefaultCfgPath, "Path to configuration file")
  44                 version  = flag.Bool("version", false, "Print version information")
  45                 warranty = flag.Bool("warranty", false, "Print warranty information")
  46         )
  47         log.SetFlags(log.Lshortfile)
  48         flag.Usage = usage
  49         flag.Parse()
  50         if *warranty {
  51                 fmt.Println(nncp.Warranty)
  52                 return
  53         }
  54         if *version {
  55                 fmt.Println(nncp.VersionGet())
  56                 return
  57         }
  58
  59         if (!*doDump && !*doLoad) || flag.NArg() != 1 {
  60                 usage()
  61                 os.Exit(1)
  62         }
  63
  64         if *doDump {
  65                 cfgRaw, err := os.ReadFile(*cfgPath)
  66                 if err != nil {
  67                         log.Fatalln(err)
  68                 }
  69                 cfg, err := nncp.CfgParse(cfgRaw)
  70                 if err != nil {
  71                         log.Fatalln(err)
  72                 }
  73                 if err = nncp.CfgToDir(flag.Arg(0), cfg); err != nil {
  74                         log.Fatalln(err)
  75                 }
  76         }
  77         if *doLoad {
  78                 cfg, err := nncp.DirToCfg(flag.Arg(0))
  79                 if err != nil {
  80                         log.Fatalln(err)
  81                 }
  82                 if _, err = nncp.Cfg2Ctx(cfg); err != nil {
  83                         log.Fatalln(err)
  84                 }
  85                 marshaled, err := hjson.MarshalWithOptions(cfg, hjson.EncoderOptions{
  86                         Eol:            "\n",
  87                         BracesSameLine: true,
  88                         QuoteAlways:    false,
  89                         IndentBy:       "  ",
  90                         AllowMinusZero: false,
  91                 })
  92                 if err != nil {
  93                         log.Fatalln(err)
  94                 }
  95                 os.Stdout.Write(marshaled)
  96                 os.Stdout.WriteString("\n")
  97         }
  98 }