/
mg.go
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/
mg.go
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package mg
import (
"fmt"
"os"
"os/exec"
"strings"
"github.com/magefile/mage/mg"
)
type Namespace = mg.Namespace
func BuildLinux(path, output string) {
Exec("go", "build", "-ldflags=-w -s", "-o", output, path).
Env("GOOS", "linux").
Env("GOARCH", "amd64").
Run()
}
func Build(path, output string) {
Exec("go", "build", "-o", output, path).Run()
}
func GoGernerate() {
Exec("go", "generate", "./...").Run()
}
type execBuilder struct {
cmd string
args []string
env map[string]string
dir string
}
func Exec(cmd string, args ...string) *execBuilder {
return &execBuilder{
cmd: cmd,
args: args,
env: make(map[string]string),
}
}
func ExecX(cmd string, args ...string) *execBuilder {
var startQuote bool
cmdsplits := strings.FieldsFunc(cmd, func(s rune) bool {
if !startQuote && s == '"' {
startQuote = true
return false
}
if startQuote && s == '"' {
startQuote = false
return false
}
if !startQuote && s == ' ' {
return true
}
return false
})
for i := 0; i < len(cmdsplits); i++ {
cmdsplits[i] = strings.ReplaceAll(cmdsplits[i], `"`, "")
}
if len(cmdsplits) == 1 {
return &execBuilder{
cmd: cmdsplits[0],
}
}
return &execBuilder{
cmd: cmdsplits[0],
args: cmdsplits[1:],
env: make(map[string]string),
}
}
func (b *execBuilder) Env(key, value string) *execBuilder {
b.env[key] = value
return b
}
func (b *execBuilder) Dir(path string) *execBuilder {
b.dir = path
return b
}
func (b *execBuilder) Run() {
b.cmd = os.Expand(b.cmd, b.expand)
for i := range b.args {
b.args[i] = os.Expand(b.args[i], b.expand)
}
cmd := exec.Command(b.cmd, b.args...)
cmd.Env = os.Environ()
if len(b.env) > 0 {
for k, v := range b.env {
cmd.Env = append(cmd.Env, k+"="+v)
}
}
if b.dir != "" {
cmd.Dir = b.dir
}
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Run(); err != nil {
code := ExitStatus(err)
fmt.Printf("running \"%s %s\" failed with exit code %d\n", b.cmd, strings.Join(b.args, " "), code)
os.Exit(code)
}
}
func (b *execBuilder) expand(s string) string {
s2, ok := b.env[s]
if ok {
return s2
}
return os.Getenv(s)
}
type exitStatus interface {
ExitStatus() int
}
func ExitStatus(err error) int {
if err == nil {
return 0
}
if e, ok := err.(exitStatus); ok {
return e.ExitStatus()
}
if e, ok := err.(*exec.ExitError); ok {
if ex, ok := e.Sys().(exitStatus); ok {
return ex.ExitStatus()
}
}
return 1
}