1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
// short-regexp is a command-line utility that reads strings from standard input
// (one per line) and outputs a regexp that matches only those strings.
package main
import (
"fmt"
"io/ioutil"
"os"
"strings"
"vbom.ml/util"
)
func main() {
data, err := ioutil.ReadAll(os.Stdin)
if err != nil {
fmt.Fprintf(os.Stderr, "error: %s", err)
os.Exit(1)
}
lines := strings.Split(string(data), "\n")
// Remove trailing empty line if present
if N := len(lines); N > 0 && lines[N-1] == "" {
lines = lines[:N-1]
}
os.Stdout.WriteString(util.ShortRegexpString(lines...))
}
|
