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// This file is part of gnunet-go, a GNUnet-implementation in Golang.
// Copyright (C) 2019-2022 Bernd Fix >Y<
//
// gnunet-go is free software: you can redistribute it and/or modify it
// under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
//
// gnunet-go is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// SPDX-License-Identifier: AGPL3.0-or-later
//go:build ignore
package main
import (
"bufio"
"flag"
"fmt"
"io"
"log"
"os"
"strings"
"text/template"
)
// Record in the GANA registry (for a given type)
type Record struct {
Number string
Name string
Comment string
References string
}
// String returns a readable record string
func (rec *Record) String() string {
return fmt.Sprintf("[%s:%s]\n", rec.Number, rec.Name)
}
// go:generate generator to read recfiles and fill templates (not exactly
// build on recutils but on recfiles).
func main() {
// handle command-line arguments
flag.Parse()
args := flag.Args()
if len(args) != 3 {
log.Fatal("not enough arguments")
}
// read template
tpl, err := template.ParseFiles(args[1])
if err != nil {
log.Fatal(err)
}
// parse recfile
in, err := os.Open(args[0])
if err != nil {
log.Fatal(err)
}
defer in.Close()
rdr := bufio.NewReader(in)
state := 0
var recs []*Record
var rec *Record
for {
// read next line from recfile
buf, _, err := rdr.ReadLine()
if err != nil {
if err == io.EOF {
break
}
}
line := strings.TrimSpace(string(buf))
log.Printf("[%d] %s\n", state, line)
// perform state machine:
switch state {
// wait for record to start
case 0:
if len(line) == 0 || strings.Index("%#", string(line[0])) != -1 {
continue
}
// new record starts here
rec = new(Record)
state = 1
fallthrough
// read record data
case 1:
if len(line) == 0 {
// record done; add to list
log.Println("Record: " + rec.String())
recs = append(recs, rec)
rec = nil
state = 0
continue
}
// set attribute
kv := strings.SplitN(line, ":", 2)
switch kv[0] {
case "Number":
rec.Number = strings.TrimSpace(kv[1])
case "Name":
rec.Name = strings.TrimSpace(kv[1])
case "Comment":
rec.Comment = strings.TrimSpace(kv[1])
case "References":
rec.References = strings.TrimSpace(kv[1])
}
}
}
// open output file
out, err := os.Create(args[2])
if err != nil {
log.Fatal(err)
}
defer out.Close()
// Exeute template on data
if err := tpl.Execute(out, recs); err != nil {
log.Fatal(err)
}
}
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