51 lines
1.6 KiB
Go
51 lines
1.6 KiB
Go
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// Lit stdin ligne par ligne, et remplace toutes les IPv6 lues sur la ligne par leur equivalent
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// en affichant tous les bits
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// Ex: 'ceci est une ipv6 : dead:beef::1' => 'ceci est une ipv6 : dead:beef:0000:0000:0000:0000:0000:00001'
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//
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package main
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import (
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"os"
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"fmt"
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"bufio"
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"errors"
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"regexp"
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"strings"
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"net/netip"
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)
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var ErrInvalidAddress = errors.New("invalid address")
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func main() {
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var dest []string
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var newline string
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// From https://stackoverflow.com/a/17871737
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regexv6 := `(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))`
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regex := regexp.MustCompile(regexv6)
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reader := bufio.NewReader(os.Stdin)
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for {
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dest = dest[:0]
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line, err := reader.ReadString('\n')
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if err != nil {
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fmt.Printf("%v\n", err)
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return
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}
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newline = line
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src := regex.FindAllString(line, -1)
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if len(src) > 0 {
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for _, s := range src {
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addr, _ := netip.ParseAddr(s)
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dest = append(dest, addr.StringExpanded())
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}
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for i, s := range src {
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newline = strings.Replace(newline, s, dest[i], 1)
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}
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}
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fmt.Printf(newline)
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}
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return
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}
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