[英]Convert SSID list to JSON/Array
I'm trying to make it possible to choose different SSID's to switch the Wlan you are connected to from Browser. 我正在尝试选择其他SSID来从浏览器切换您连接的Wlan。
var sys = require('sys');
var exec = require('child_process').exec;
app.get(prefix + '/wlan', function(req, res){
child = exec("iwlist wlan0 scan | grep ESSID", function(error, stdout, stderr){
if(error !== null){
console.log('Exec error ' + error);
}
else {
res.send(stdout);
}
});
});
This is my code so far to get a SSID list.. 到目前为止,这是我的代码以获取SSID列表。
The Output is like that: 输出是这样的:
ESSID:"WLAN-GUEST" ESSID:"WLAN1" ESSID:"WLAN-GUEST" ESSID:"WLAN1" ESSID:"WLAN2"
I have no idea why two ESSID's are listed twice but my main question is, how can I parse this to JSON or how can I access each entry like an array (wlanlist[0])? 我不知道为什么两次列出两个ESSID,但是我的主要问题是,如何将其解析为JSON或如何像数组(wlanlist [0])一样访问每个条目?
Edit: I tried to stdout.replace(" ",", "); 编辑:我试图stdout.replace(“”,“,”); and JSON.parse but as it's async it's sent without changes.
和JSON.parse,但由于它是异步的,因此无需更改即可发送。 (Not sure if that would work as sync)
(不确定是否可以同步)
Edit2: Trying to access the data like that: Edit2:尝试像这样访问数据:
$(document).ready(function() {
$.get(prefix + '/wlan', function(wlanlist){
document.getElementById("wlanoptions").options[0] = new Option("Select your WLAN:","");
document.getElementById("wlanoptions").options[1] = new Option(wlanlist[0],wlanlist[0])
});
});
Final Result: 最后结果:
var wlanlistarray = stdout.split("ESSID:"); res.send(wlanlistarray);
In addition: 此外:
//extract ssid and remove quotes
var wlanlist = new Array;
var step1 = stdout.split("ESSID:");
for(i = 1; i < step1.length; i++){
var arr = new Array;
arr = step1[i].split('"');
//if exists in array -> continue; else create new entry in wlanlist
if(wlanlist.indexOf(arr[1]) === -1){wlanlist.push(arr[1]);}
else{continue;}
}
res.send(wlanlist);
This should return an array of SSIDs: 这应该返回一个SSID数组:
stdout.split("ESSID:")
Now clean up the "
and you are all done. 现在清理
"
,您就完成了。
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