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// Package install provide installation functions of command completion.
package install
import (
"errors"
"fmt"
"io"
"os"
"os/user"
"path/filepath"
"runtime"
"strings"
)
func Run(name string, uninstall, yes bool, out io.Writer, in io.Reader) {
action := "install"
if uninstall {
action = "uninstall"
}
if !yes {
fmt.Fprintf(out, "%s completion for %s? ", action, name)
var answer string
fmt.Fscanln(in, &answer)
switch strings.ToLower(answer) {
case "y", "yes":
default:
fmt.Fprintf(out, "Cancelling...\n")
return
}
}
fmt.Fprintf(out, action+"ing...\n")
var err error
if uninstall {
err = Uninstall(name)
} else {
err = Install(name)
}
if err != nil {
fmt.Fprintf(out, "%s failed: %s\n", action, err)
os.Exit(1)
}
}
type installer interface {
IsInstalled(cmd, bin string) bool
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 find 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 = errors.Join(err, errI)
}
}
return err
}
// IsInstalled returns true if the completion
// for the given cmd is installed.
func IsInstalled(cmd string) bool {
bin, err := getBinaryPath()
if err != nil {
return false
}
for _, i := range installers() {
installed := i.IsInstalled(cmd, bin)
if installed {
return true
}
}
return false
}
// 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 find any shells to uninstall")
}
bin, err := getBinaryPath()
if err != nil {
return err
}
for _, i := range is {
errI := i.Uninstall(cmd, bin)
if errI != nil {
err = errors.Join(err, errI)
}
}
return err
}
func installers() (i []installer) {
// The list of bash config files candidates where it is
// possible to install the completion command.
var bashConfFiles []string
switch runtime.GOOS {
case "darwin":
bashConfFiles = []string{".bash_profile"}
default:
bashConfFiles = []string{".bashrc", ".bash_profile", ".bash_login", ".profile"}
}
for _, rc := range bashConfFiles {
if f := rcFile(rc); f != "" {
i = append(i, bash{f})
break
}
}
if f := rcFile(".zshrc"); f != "" {
i = append(i, zsh{f})
}
if d := fishConfigDir(); d != "" {
i = append(i, fish{d})
}
return
}
func fishConfigDir() string {
configDir := filepath.Join(getConfigHomePath(), "fish")
if configDir == "" {
return ""
}
if info, err := os.Stat(configDir); err != nil || !info.IsDir() {
return ""
}
return configDir
}
func getConfigHomePath() string {
u, err := user.Current()
if err != nil {
return ""
}
configHome := os.Getenv("XDG_CONFIG_HOME")
if configHome == "" {
return filepath.Join(u.HomeDir, ".config")
}
return configHome
}
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
}
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