package main
import (
"bufio"
"flag"
"fmt"
"io"
"os"
"regexp"
)
func wordByWord(file string) error {
var err error
f, err := os.Open(file)
if err != nil {
return err
}
defer f.Close()
r := bufio.NewReader(f)
for {
line, err := r.ReadString('\n')
if err == io.EOF {
break
} else if err != nil {
fmt.Printf("error reading file %s", err)
return err
}
r := regexp.MustCompile("[^\\s]+")
words := r.FindAllString(line, -1)
for i := 0; i < len(words); i++ {
fmt.Printf(words[i])
}
}
return nil
}
func main() {
flag.Parse()
if len(flag.Args()) == 0 {
fmt.Printf("usage: byWord <file1> [<file2> ...]\n")
return
}
for _, file := range flag.Args() {
err := wordByWord(file)
if err != nil {
fmt.Println(err)
}
}
}
$ go run byWord.go /tmp/adobegc.log
01/08/18
20:25:09:669
|
[INFO]
$ go run byWord.go /tmp/adobegc.log | wc
91591 91591 559005
$ wc /tmp/adobegc.log
4831 91591 583454 /tmp/adobegc.log