/
colorize.go
52 lines (41 loc) · 837 Bytes
/
colorize.go
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package main
import (
"bufio"
"flag"
"fmt"
"os"
"github.com/mgutz/ansi"
)
// Colorize output
var colorFlag = flag.String("color", "", "foregroundColor+attributes:backgroundColor+attributes")
var altFlag = flag.Bool("alt", false, "Alternate every other line")
var color func(string) string
func init() {
flag.Usage = func() {
fmt.Printf("Usage: ./colorize -color 'red:green' -alt=false\n")
flag.PrintDefaults()
}
flag.Parse()
if *colorFlag != "" {
color = ansi.ColorFunc(*colorFlag)
}
}
func main() {
scanner := bufio.NewScanner(os.Stdin)
count := 0
for scanner.Scan() {
line := scanner.Text()
if *colorFlag != "" {
if !*altFlag {
fmt.Println(color(line))
continue
}
count += 1
if *altFlag && count%2 == 0 {
fmt.Println(color(line))
continue
}
}
fmt.Println(line)
}
}