package install
import (
"bytes"
"fmt"
"os"
"path/filepath"
"text/template"
)
// (un)install in fish
type fish struct {
configDir string
}
func (f fish) Install(cmd, bin string) error {
completionFile := filepath.Join(f.configDir, "completions", fmt.Sprintf("%s.fish", cmd))
completeCmd, err := f.cmd(cmd, bin)
if err != nil {
return err
}
if _, err := os.Stat(completionFile); err == nil {
return fmt.Errorf("already installed at %s", completionFile)
}
return createFile(completionFile, completeCmd)
}
func (f fish) Uninstall(cmd, bin string) error {
completionFile := filepath.Join(f.configDir, "completions", fmt.Sprintf("%s.fish", cmd))
if _, err := os.Stat(completionFile); err != nil {
return fmt.Errorf("does not installed in %s", f.configDir)
}
return os.Remove(completionFile)
}
func (f fish) cmd(cmd, bin string) (string, error) {
var buf bytes.Buffer
params := struct{ Cmd, Bin string }{cmd, bin}
tmpl := template.Must(template.New("cmd").Parse(`
function __complete_{{.Cmd}}
set -lx COMP_LINE (string join ' ' (commandline -o))
test (commandline -ct) = ""
and set COMP_LINE "$COMP_LINE "
{{.Bin}}
end
complete -c {{.Cmd}} -a "(__complete_{{.Cmd}})"
`))
err := tmpl.Execute(&buf, params)
if err != nil {
return "", err
}
return buf.String(), nil
}
