Execute a system command: Difference between revisions
Added Wren
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=={{header|Wart}}==
<lang wart>system "ls"</lang>
=={{header|Wren}}==
Wren CLI doesn't currently expose a way to execute a system command.
However, if Wren is embedded in (say) a suitable Go program, then we can ask the latter to do it for us.
<lang ecmascript>/* run_system_command.wren */
class Command {
foreign static exec(name, param) // the code for this is provided by Go
}
Command.exec("ls", "-lt")
System.print()
Command.exec("dir", "")</lang>
which we embed in the following Go program and run it.
{{libheader|WrenGo}}
<lang go>/* run_system_command.wren*/
package main
import (
wren "github.com/crazyinfin8/WrenGo"
"log"
"os"
"os/exec"
)
type any = interface{}
func execCommand(vm *wren.VM, parameters []any) (any, error) {
name := parameters[1].(string)
param := parameters[2].(string)
var cmd *exec.Cmd
if param != "" {
cmd = exec.Command(name, param)
} else {
cmd = exec.Command(name)
}
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Run(); err != nil {
log.Fatal(err)
}
return nil, nil
}
func main() {
vm := wren.NewVM()
fileName := "run_system_command.wren"
methodMap := wren.MethodMap{"static exec(_,_)": execCommand}
classMap := wren.ClassMap{"Command": wren.NewClass(nil, nil, methodMap)}
module := wren.NewModule(classMap)
vm.SetModule(fileName, module)
vm.InterpretFile(fileName)
vm.Free()
}</lang>
=={{header|x86 Assembly}}==
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