MAC vendor lookup: Difference between revisions

=={{header|Wren}}==

Wren CLI doesn't currently expose a way to look up a MAC address.

However, if Wren is embedded in (say) a suitable Go program, then we can ask the latter to do it for us.

<lang ecmascript>/* mac_vendor_lookup.wren */

class MAC {

foreign static lookup(address)

}

System.print(MAC.lookup("FC:FB:FB:01:FA:21"))</lang>

which we embed in the following Go program and run it.

{{libheader|WrenGo}}

<lang go>/* mac_vendor_lookup.go */

package main

import (

wren "github.com/crazyinfin8/WrenGo"

"io/ioutil"

"net/http"

)

type any = interface{}

func macLookup(vm *wren.VM, parameters []any) (any, error) {

mac := parameters[1].(string)

resp, _ := http.Get("http://api.macvendors.com/" + mac)

body, _ := ioutil.ReadAll(resp.Body)

return string(body), nil

}

func main() {

vm := wren.NewVM()

fileName := "mac_vendor_lookup.wren"

methodMap := wren.MethodMap{"static lookup(_)": macLookup}

classMap := wren.ClassMap{"MAC": wren.NewClass(nil, nil, methodMap)}

module := wren.NewModule(classMap)

vm.SetModule(fileName, module)

vm.InterpretFile(fileName)

vm.Free()

}</lang>

{{out}}

<pre>

Cisco Systems, Inc

</pre>