// Runs the commands given by the command string on the file and
// returns the error if one is found
func (s *Stream) Run(cmd string) error {
// First parse the entire command string
cm, er := parser.ParseString(cmd)
if er != nil {
return er
}
//spew.Dump(cm)
// So now we run these commands on the file
fi, er := interpreter.New(s.file)
if er != nil {
return er
}
return fi.Run(cm)
}
// Run all the commands on the data in in and if no error happens
// then do the output to out
func do(cmds []parser.Command, in io.Reader, out io.Writer) {
f := gap.NewReader(in)
i, e := interpreter.New(f)
if e != nil {
fmt.Println("error: could not create interpreter:", e)
return
}
e = i.Run(cmds)
if e != nil {
fmt.Println("error while executing commands:", e)
return
}
_, e = i.File().Seek(0, 0)
if e != nil {
fmt.Println("error: could not setupt output:", e)
return
}
_, e = io.Copy(out, i.File())
if e != nil {
fmt.Println("error: could not write all data to output:", e)
return
}
}