1package install 2 3import ( 4 "bytes" 5 "fmt" 6 "os" 7 "path/filepath" 8 "text/template" 9) 10 11// (un)install in fish 12 13type fish struct { 14 configDir string 15} 16 17func (f fish) Install(cmd, bin string) error { 18 completionFile := filepath.Join(f.configDir, "completions", fmt.Sprintf("%s.fish", cmd)) 19 completeCmd, err := f.cmd(cmd, bin) 20 if err != nil { 21 return err 22 } 23 if _, err := os.Stat(completionFile); err == nil { 24 return fmt.Errorf("already installed at %s", completionFile) 25 } 26 27 return createFile(completionFile, completeCmd) 28} 29 30func (f fish) Uninstall(cmd, bin string) error { 31 completionFile := filepath.Join(f.configDir, "completions", fmt.Sprintf("%s.fish", cmd)) 32 if _, err := os.Stat(completionFile); err != nil { 33 return fmt.Errorf("does not installed in %s", f.configDir) 34 } 35 36 return os.Remove(completionFile) 37} 38 39func (f fish) cmd(cmd, bin string) (string, error) { 40 var buf bytes.Buffer 41 params := struct{ Cmd, Bin string }{cmd, bin} 42 tmpl := template.Must(template.New("cmd").Parse(` 43function __complete_{{.Cmd}} 44 set -lx COMP_LINE (string join ' ' (commandline -o)) 45 test (commandline -ct) = "" 46 and set COMP_LINE "$COMP_LINE " 47 {{.Bin}} 48end 49complete -c {{.Cmd}} -a "(__complete_{{.Cmd}})" 50`)) 51 err := tmpl.Execute(&buf, params) 52 if err != nil { 53 return "", err 54 } 55 return buf.String(), nil 56} 57