magefile.go

// +build mage

package main

import (
	"fmt"
	"os"
	"os/exec"
	"path/filepath"

	"github.com/magefile/mage/mg" // mg contains helpful utility functions, like Deps
	"github.com/magefile/mage/sh"
)

// Default target to run when none is specified
// If not set, running mage will list available targets
// var Default = Build

// A build step that requires additional params, or platform specific steps for example
func Build() error {
	mg.Deps(InstallDeps)
	fmt.Println("Building...")
	cmd := exec.Command("go", "build", "-o", "MyApp", ".")
	return cmd.Run()
}

// A custom install step if you need your bin someplace other than go/bin
func Install() error {
	mg.Deps(Build)
	fmt.Println("Installing...")
	return os.Rename("./MyApp", "/usr/bin/MyApp")
}

// Manage your deps, or running package managers.
func InstallDeps() error {
	fmt.Println("Installing Deps...")
	cmd := exec.Command("go", "get", "github.com/stretchr/piglatin")
	return cmd.Run()
}

// Clean up after yourself
func Clean() {
	fmt.Println("Cleaning...")
	os.RemoveAll("MyApp")
}

//Tooling help
func Tools() error {
	update, err := envBool("UPDATE")
	if err != nil {
		return err
	}

	if err := os.MkdirAll("_tools", 0700); err != nil {
		return err
	}
	wd, err := os.Getwd()
	if err != nil {
		return err
	}
	env := map[string]string{"GOBIN": filepath.Join(wd, "_tools")}
	args := []string{"get"}
	if update {
		args = []string{"get", "-u"}
	}
	for _, t := range tools {
		err := sh.RunWith(env, "go", append(args, t)...)
		if err != nil {
			return err
		}
	}
	return nil
}

// tool runs a command using a cached binary.
func tool(cmd string, args ...string) error {
	return sh.Run(filepath.Join("_tools", cmd), args...)
}