Color lets you use colorized outputs in terms of ANSI Escape Codes in Go (Golang). It has support for Windows too! The API can be used in several ways, pick one that suits you.
go get github.com/fatih/color
// Print with default helper functions color.Cyan("Prints text in cyan.") // A newline will be appended automatically color.Blue("Prints %s in blue.", "text") // These are using the default foreground colors color.Red("We have red") color.Magenta("And many others ..")
// Create a new color object c := color.New(color.FgCyan).Add(color.Underline) c.Println("Prints cyan text with an underline.") // Or just add them to New() d := color.New(color.FgCyan, color.Bold) d.Printf("This prints bold cyan %s\n", "too!.") // Mix up foreground and background colors, create new mixes! red := color.New(color.FgRed) boldRed := red.Add(color.Bold) boldRed.Println("This will print text in bold red.") whiteBackground := red.Add(color.BgWhite) whiteBackground.Println("Red text with white background.")
// Create a custom print function for convenience red := color.New(color.FgRed).PrintfFunc() red("Warning") red("Error: %s", err) // Mix up multiple attributes notice := color.New(color.Bold, color.FgGreen).PrintlnFunc() notice("Don't forget this...")
// Create SprintXxx functions to mix strings with other non-colorized strings: yellow := color.New(color.FgYellow).SprintFunc() red := color.New(color.FgRed).SprintFunc() fmt.Printf("This is a %s and this is %s.\n", yellow("warning"), red("error")) info := color.New(color.FgWhite, color.BgGreen).SprintFunc() fmt.Printf("This %s rocks!\n", info("package")) // Use helper functions fmt.Printf("This", color.RedString("warning"), "should be not neglected.") fmt.Printf(color.GreenString("Info:"), "an important message." ) // Windows supported too! Just don't forget to change the output to color.Output fmt.Fprintf(color.Output, "Windows support: %s", color.GreenString("PASS"))
// Use handy standard colors color.Set(color.FgYellow) fmt.Println("Existing text will now be in yellow") fmt.Printf("This one %s\n", "too") color.Unset() // Don't forget to unset // You can mix up parameters color.Set(color.FgMagenta, color.Bold) defer color.Unset() // Use it in your function fmt.Println("All text will now be bold magenta.")
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