Colprint

Easy column formatted printing of structs and slices/arrays of structs in golang.

Colprint is a small Go package to help build CLI appliactions where you want to list items in human readable form in formatted columns. Colprint builds on Columnize, and adds functionality to easy print structs and slices/arrays of structs. You just have have to add the colprint tag to the fields you want to print.

Installation

Using Colprint is easy. First, use go get to install the latest version of the library.

$ go get github.com/peteabre/colprint

Next, include Colprint in your application:

import "github.com/peteabre/colprint"

Getting started

After installing the library and including it in you application, simply tag your structs and pass them as arguments to the Print function. The tag takes two arguments:

1. Label - column header (string)
2. Order - print order of column (int)

Example:

package main

import "github.com/peteabre/colprint"

type Person struct {
        FirstName string `colprint:"First name,1"`
        LastName string  `colprint:"Last name,2"`
        Age int          `colprint:"Age,3"`
} 

func main()  {
        persons := []Person{
                {
                        FirstName: "Ola",
                        LastName:  "Nordmann",
                        Age:        35,
                },
                {
                        FirstName: "Kari",
                        LastName:  "Nordmann",
                        Age:        37,
                },
         }
         colprint.Print(persons)
}

As you can see, if you have a tagged struct, you can simply pass a slice/array and the result will be:

First name  Last name  Age
Ola         Nordmann   35
Kari        Nordmann   37