open-nomad/vendor/github.com/posener/complete/cmd/install/install.go

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package install
import (
"errors"
"os"
"os/user"
"path/filepath"
"github.com/hashicorp/go-multierror"
)
type installer interface {
Install(cmd, bin string) error
Uninstall(cmd, bin string) error
}
// Install complete command given:
// cmd: is the command name
func Install(cmd string) error {
is := installers()
if len(is) == 0 {
return errors.New("Did not found any shells to install")
}
bin, err := getBinaryPath()
if err != nil {
return err
}
for _, i := range is {
errI := i.Install(cmd, bin)
if errI != nil {
err = multierror.Append(err, errI)
}
}
return err
}
// Uninstall complete command given:
// cmd: is the command name
func Uninstall(cmd string) error {
is := installers()
if len(is) == 0 {
return errors.New("Did not found any shells to uninstall")
}
bin, err := getBinaryPath()
if err != nil {
return err
}
for _, i := range is {
errI := i.Uninstall(cmd, bin)
if errI != nil {
multierror.Append(err, errI)
}
}
return err
}
func installers() (i []installer) {
for _, rc := range [...]string{".bashrc", ".bash_profile"} {
if f := rcFile(rc); f != "" {
i = append(i, bash{f})
break
}
}
if f := rcFile(".zshrc"); f != "" {
i = append(i, zsh{f})
}
return
}
func getBinaryPath() (string, error) {
bin, err := os.Executable()
if err != nil {
return "", err
}
return filepath.Abs(bin)
}
func rcFile(name string) string {
u, err := user.Current()
if err != nil {
return ""
}
path := filepath.Join(u.HomeDir, name)
if _, err := os.Stat(path); err != nil {
return ""
}
return path
}