Javascript使用正则表达式将文本转换为对象

Question

I have the following text taken from a email body, I want to save each block into a object, then add into a array. but I am struggle to correctly define the for loop, in another word how to seprate the blocks

Name: Andy
Computer: ABC
IP: 192.168.0.1
Added By: Maria
Timestamp: 2018-03-15 08:45:08 +0000 UTC

Name: Richard
Computer: CDE
IP: 192.168.0.2
Timestamp: 2018-03-15 08:45:08 +0000 UTC

..........more blocks................

In Javascript (Jquery can not be supported)

//I first define a array  
var msgs= [];

//then define a object
var msg= {
    Name:"",
    Computer:"",
    IP:50,
    TimeStamp: new Date()
};

var reg = (.....);
var result;

//wholeMsgBody is the whole text sample I have provided
while((result = reg.exec(wholeMsgBody)) !== null) {
  //assume the block = Name:.... until TimeStamp.....
  var userName = block.match(Name:.*); //Andy
  var computer = block.match(Computer:.*); //ABC
  var ip = block.match(Computer:.*) //192.168.0.1
  Var timeStamp = new Date(block.match(Timestamp:.*)) //2018/03/15

  msgs.push({"Name":userName, "Computer":computer, "ip":ip, "timeStamp":timeStamp})
}

I am basiclly Struggle to define the reg expression. any help would be much appriciated.

Answer 1

You should be able to separate the blocks by calling split() on the string and passing the appropriate separator. After this you can split it into lines, and then key/value pairs.

Of course, if your data is not consistent you will need to adjust, but something like this might get you started:

 var str = `Name: Andy Computer: ABC IP: 192.168.0.1 Added By: Maria Timestamp: 2018-03-15 08:45:08 +0000 UTC Name: Richard Computer: CDE IP: 192.168.0.2 Timestamp: 2018-03-15 08:45:08 +0000 UTC ` var blocks = str.split('\\n\\n') var objects = blocks.map(b => { let lines = b.split('\\n') return lines.reduce((obj, line) => { if (!line) return obj let [key, value] = line.split(/:(.+)/) obj[key] = value.trim() return obj }, {}) }) console.log(objects)