40 lines
634 B
Go
40 lines
634 B
Go
// command svsort sorts lines of text by semver at beginning of line
|
|
package main
|
|
|
|
import (
|
|
"bufio"
|
|
"bytes"
|
|
"fmt"
|
|
"log"
|
|
"net"
|
|
"os"
|
|
"sort"
|
|
)
|
|
|
|
type lines []string
|
|
|
|
func (l lines) Len() int { return len(l) }
|
|
func (l lines) Swap(i, j int) { l[i], l[j] = l[j], l[i] }
|
|
func (l lines) Less(i, j int) bool {
|
|
a, b := net.ParseIP(l[i]), net.ParseIP(l[j])
|
|
return bytes.Compare(a, b) < 0
|
|
}
|
|
|
|
func main() {
|
|
s := bufio.NewScanner(os.Stdin)
|
|
|
|
ls := lines{}
|
|
for s.Scan() {
|
|
ls = append(ls, s.Text())
|
|
}
|
|
|
|
if err := s.Err(); err != nil {
|
|
log.Fatalf("scan: %v")
|
|
}
|
|
|
|
sort.Sort(ls)
|
|
for _, l := range ls {
|
|
fmt.Printf("%v\n", l)
|
|
}
|
|
}
|