comparison eview.go @ 1:c32b619844ba default tip

add eview.go.
author pyon@macmini
date Sun, 17 Sep 2017 14:33:27 +0900
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0:43e580fa4719 1:c32b619844ba
1 package main
2
3 import (
4 "bufio"
5 "flag"
6 "fmt"
7 "io/ioutil"
8 "log"
9 "os"
10 "sort"
11 "strings"
12 )
13
14 var n int
15 var dir string
16 func init() {
17 flag.IntVar( &n, "n", 20, "print top N" )
18 flag.StringVar( &dir, "d", "data", "directory" )
19 }
20
21 func main() {
22 flag.Parse()
23
24 files, err := ioutil.ReadDir( dir )
25 if err != nil {
26 log.Fatal( err )
27 }
28
29 var ea []string
30 for _, file := range files {
31 if strings.HasPrefix( file.Name(), "m" ) {
32 f, err := os.Open( dir + "/" + file.Name() )
33 if err != nil {
34 log.Fatal( err )
35 }
36
37 scanner := bufio.NewScanner( f )
38 for scanner.Scan() {
39 if ! strings.HasPrefix( scanner.Text(), "ea = 9999.99" ) {
40 ea = append( ea, scanner.Text() )
41 }
42 }
43 f.Close()
44 }
45 }
46
47 sort.Strings( ea )
48 for i, e := range ea {
49 if i > n - 1 {
50 break
51 }
52 fmt.Println( e )
53 }
54 }