package lib import ( "os/exec" "runtime" "git.sr.ht/~rjarry/aerc/logging" ) var openBin string = "xdg-open" func init() { if runtime.GOOS == "darwin" { openBin = "open" } } type xdgOpen struct { args []string errCh chan (error) cmd *exec.Cmd } // NewXDGOpen returns a handler for opening a file via the system handler xdg-open // or comparable tools on other OSs than Linux func NewXDGOpen(filename string) *xdgOpen { errch := make(chan error, 1) return &xdgOpen{ errCh: errch, args: []string{filename}, } } // SetArgs sets additional arguments to the open command prior to the filename func (xdg *xdgOpen) SetArgs(args []string) { args = append([]string{}, args...) // don't overwrite array of caller filename := xdg.args[len(xdg.args)-1] xdg.args = append(args, filename) } // Start the open handler. // Returns an error if the command could not be started. // Use Wait to wait for the commands completion and to check the error. func (xdg *xdgOpen) Start() error { xdg.cmd = exec.Command(openBin, xdg.args...) err := xdg.cmd.Start() if err != nil { xdg.errCh <- err // for callers that just check the error from Wait() close(xdg.errCh) return err } go func() { defer logging.PanicHandler() xdg.errCh <- xdg.cmd.Wait() close(xdg.errCh) }() return nil } // Wait for the xdg-open command to complete // The xdgOpen must have been started func (xdg *xdgOpen) Wait() error { return <-xdg.errCh }