func command(stmt *gohanscript.Stmt) (func(*gohanscript.Context) (interface{}, error), error) {
var err error
stmt.Args, err = gohanscript.MapToValue(util.MaybeMap(stmt.RawData["args"]))
if err != nil {
return nil, err
}
stmt.Args["command"], err = gohanscript.NewValue(stmt.RawData["command"])
if err != nil {
return nil, err
}
return func(context *gohanscript.Context) (interface{}, error) {
chdir := stmt.Arg("chdir", context)
if chdir != nil {
currentDir, _ := filepath.Abs(".")
os.Chdir(util.MaybeString(chdir))
defer os.Chdir(currentDir)
}
command := util.MaybeString(stmt.Arg("command", context))
parts := strings.Fields(command)
result, err := exec.Command(parts[0], parts[1:]...).CombinedOutput()
return string(result), err
}, nil
}
func backgroundJob(stmt *gohanscript.Stmt) (func(*gohanscript.Context) (interface{}, error), error) {
stmts, err := gohanscript.MakeStmts(stmt.File, stmt.RawNode["job"])
if err != nil {
return nil, stmt.Errorf("background code error: %s", err)
}
queueArg, err := gohanscript.NewValue(stmt.RawData["queue"])
if err != nil {
return nil, stmt.Errorf("background code error: %s", err)
}
f, err := gohanscript.StmtsToFunc("job", stmts)
if err != nil {
return nil, err
}
return func(context *gohanscript.Context) (interface{}, error) {
queue := queueArg.Value(context).(*job.Queue)
newContext := context.Extend(map[string]interface{}{})
queue.Add(
job.NewJob(func() {
f(newContext)
newContext.VM.Stop()
}))
return nil, nil
}, nil
}