How to convert ANSI code to actual color in golang

Recently, when I was using golang, I encountered a problem, that is, how to convert the ANSI code to the actual color in the terminal.

ANSI code identifies a series of control characters, one of which is to set the color. In the past, terminals were black and white. Later, with the emergence of color terminals, the terminals' support for ANSI codes became better and better. Many terminals now support converting ANSI codes to actual colors.

In golang, we can use some libraries to achieve this purpose, such as ANSI library or color library. Below, I will introduce how to use these libraries to implement ANSI code conversion.

First, let's see how to use the ANSI library. The ANSI library contains some commonly used ANSI codes, such as ANSI codes for setting font color and background color. We can use these ANSI codes to set the color of the output.

Code implementation example:

package main

import (
    "fmt"
    "github.com/mgutz/ansi"
)

func main() {
    reset := ansi.ColorCode("reset")
    red := ansi.ColorCode("red")

    fmt.Println("This is " + red + "red" + reset + " color text.")
}

In the above code, we use the two ANSI codes reset and red. We can get the corresponding ANSI code by calling the ansi.ColorCode() function. We can then insert these ANSI codes into the output string to set the color of the string. Finally, we use the ANSI code of reset to reset the color of the terminal.

Next, let’s take a look at how to use the color library. The color library is a lightweight library that allows us to set colors easily.

Code implementation example:

package main

import (
    "fmt"
    "github.com/fatih/color"
)

func main() {
    red := color.New(color.FgRed).SprintFunc()
    fmt.Printf("This is %sred%s color text.\n", red("bright "), red(""))
}

In the above code, we use the color library to set the output color. We first create a new color object, here we choose red. Then, we use the SprintFunc() function to convert the string into a colored string. Finally, we output the string with color.

The above is how to convert ANSI code to actual color in golang. In actual use, we can choose our favorite library for processing. Hope this article is helpful to you.

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