tools.go_host: src/host.go annotate

. не верное использование сборочного инструментария

awgur@0	1 package main
awgur@0	2
awgur@0	3 import (
awgur@0	4 "fmt"
awgur@0	5 "net"
awgur@0	6 "os"
awgur@1	7 "sort"
awgur@0	8
awgur@0	9 idna "golang.org/x/net/idna"
awgur@0	10 )
awgur@0	11
awgur@0	12 func say_err(msg interface{}) {
awgur@0	13 _, err := fmt.Fprintf(os.Stderr, "ERROR: %s\n", msg)
awgur@0	14 if err != nil {
awgur@0	15 panic(err)
awgur@0	16 }
awgur@0	17
awgur@0	18 os.Exit(1)
awgur@0	19 }
awgur@0	20
awgur@1	21 func out_res(items []string) {
awgur@1	22 sort.Strings(items)
awgur@1	23 for _, i := range items {
awgur@1	24 fmt.Println(i)
awgur@1	25 }
awgur@1	26 }
awgur@1	27
awgur@0	28 func main() {
awgur@0	29 if len(os.Args) < 2 {
awgur@0	30 say_err("Need hostname or IP as argument")
awgur@0	31 }
awgur@0	32
awgur@0	33 arg := os.Args[1]
awgur@0	34
awgur@0	35 ip := net.ParseIP(arg)
awgur@0	36
awgur@0	37 if ip != nil {
awgur@0	38 res, err := net.LookupAddr(ip.String())
awgur@0	39 if err != nil {
awgur@0	40 say_err(err)
awgur@0	41 }
awgur@0	42
awgur@1	43 out_res(res)
awgur@0	44
awgur@0	45 } else {
awgur@0	46 hostname, err := idna.ToASCII(arg)
awgur@0	47 if err != nil {
awgur@0	48 say_err(err)
awgur@0	49 }
awgur@0	50
awgur@0	51 res, err := net.LookupHost(hostname)
awgur@0	52 if err != nil {
awgur@0	53 say_err(err)
awgur@0	54 }
awgur@0	55
awgur@1	56 out_res(res)
awgur@0	57
awgur@0	58 }
awgur@0	59
awgur@0	60 }

tools.go_host