Color Print

Overview

The utils package provides color printing functionality for terminal output using ANSI escape codes.

Color Types

const (
    Red        // Red
    Green      // Green
    BrightBlue // Bright Blue
    Magenta    // Purple/Magenta
    Cyan       // Cyan
)

API Reference

PrintlnColor(c color, text string)

Prints text in the specified color and adds a newline. Falls back to plain text if the color is not found.

import "github.com/leoheung/go-patterns/utils"

utils.PrintlnColor(utils.Red, "This is red text")
utils.PrintlnColor(utils.Green, "This is green text")
utils.PrintlnColor(utils.BrightBlue, "This is blue text")
utils.PrintlnColor(utils.Magenta, "This is purple text")
utils.PrintlnColor(utils.Cyan, "This is cyan text")

GetNextColor() color

Returns the next color in rotation (Red → Green → BrightBlue → Magenta → Cyan → Red...).

c1 := utils.GetNextColor() // Red
c2 := utils.GetNextColor() // Green
c3 := utils.GetNextColor() // BrightBlue

Example

package main

import (
	"fmt"
	"github.com/leoheung/go-patterns/utils"
)

func main() {
	colors := []utils.color{
		utils.Red,
		utils.Green,
		utils.BrightBlue,
		utils.Magenta,
		utils.Cyan,
	}

	messages := []string{
		"Error message",
		"Success message",
		"Info message",
		"Warning message",
		"Debug message",
	}

	for i, msg := range messages {
		utils.PrintlnColor(colors[i], msg)
	}

	fmt.Println("\nUsing GetNextColor():")
	for i := 0; i < 3; i++ {
		c := utils.GetNextColor()
		utils.PrintlnColor(c, fmt.Sprintf("Message %d", i+1))
	}
}

Notes

• Colors are rendered using ANSI escape codes
• Not all terminals support all colors
• Colors are automatically reset after each line
• GetNextColor() cycles through colors for easy alternating patterns