Mercurial > mercurial > hgweb_golang.cgi
comparison src/gomatrix.go @ 26:1b293bb0a011
add gomatrix.
| author | pyon@macmini |
|---|---|
| date | Sat, 02 Feb 2019 10:35:24 +0900 |
| parents | |
| children |
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| 25:2afa7e0ff1f2 | 26:1b293bb0a011 |
|---|---|
| 1 package main | |
| 2 | |
| 3 import ( | |
| 4 "flag" | |
| 5 "fmt" | |
| 6 "math/rand" | |
| 7 "runtime" | |
| 8 "time" | |
| 9 ) | |
| 10 | |
| 11 func main() { | |
| 12 sw := flag.Int( "w", 40, "screen width" ) | |
| 13 sl := flag.Int( "s", 100, "interval" ) | |
| 14 flag.Parse() | |
| 15 | |
| 16 s := "0123456789abcdefghijkemnopqrstuvwxyzABCDEFGHIJKEMNOPQRSTUVWXYZ!@#$%&*|;:.,=+-/" | |
| 17 n := len( s ) | |
| 18 r := 0 | |
| 19 for i := 1 ; ; i++ { | |
| 20 r = rand.Intn( n ) | |
| 21 fmt.Printf( "%s ", random_color( s[r] ) ) | |
| 22 if i == *sw { | |
| 23 for t := 0; t < *sl; t++ { | |
| 24 time.Sleep( time.Millisecond ) | |
| 25 } | |
| 26 fmt.Println() | |
| 27 i = 0 | |
| 28 } | |
| 29 } | |
| 30 } | |
| 31 | |
| 32 func random_color( s byte ) string { | |
| 33 if runtime.GOOS == "windows" { | |
| 34 return string( s ) | |
| 35 } | |
| 36 // black, red, green yellow, blue, magenta, cyan, white | |
| 37 c := [...]int{ 30, 31, 32, 33, 34, 35, 36, 37 } | |
| 38 r := rand.Intn( len( c ) ) | |
| 39 return fmt.Sprintf( "\x1b[%dm%c\x1b[0m", c[r], s ) | |
| 40 } | |
| 41 |