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// +build mage
package main
import (
"context"
"log"
"os"
"os/exec"
"strings"
"github.com/jtolds/qod"
"github.com/pkg/errors"
)
var wd string
func init() {
lwd, err := os.Getwd()
qod.ANE(err)
wd = lwd
}
// must end in a slash
const pkgBase = "github.com/Xe/site/"
func output(cmd string, args ...string) (string, error) {
c := exec.Command(cmd, args...)
c.Env = os.Environ()
c.Stderr = os.Stderr
b, err := c.Output()
if err != nil {
return "", errors.Wrapf(err, `failed to run %v %q`, cmd, args)
}
return string(b), nil
}
func gitTag() (string, error) {
s, err := output("git", "describe", "--tags")
if err != nil {
ee, ok := errors.Cause(err).(*exec.ExitError)
if ok && ee.Exited() {
// probably no git tag
return "dev", nil
}
return "", err
}
return strings.TrimSuffix(s, "\n"), nil
}
func shouldWork(ctx context.Context, env []string, dir string, cmdName string, args ...string) {
loc, err := exec.LookPath(cmdName)
qod.ANE(err)
cmd := exec.CommandContext(ctx, loc, args...)
cmd.Dir = dir
cmd.Env = append(env, os.Environ()...)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
log.Printf("starting process, env: %v, pwd: %s, cmd: %s, args: %v", env, dir, loc, args)
err = cmd.Run()
qod.ANE(err)
}
func goBuild(ctx context.Context, env []string, dir string, pkgname string) {
shouldWork(ctx, env, dir, "go", "build", "-v", pkgBase+pkgname)
}
func goInstall(ctx context.Context, env []string, pkgname string) {
shouldWork(ctx, nil, wd, "go", "install", pkgBase+pkgname)
}
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