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