regex node javascript

Question

Need find all the text to "min" inclusive.

All online services and "subline text 3" are correct found, but the "match" returns null. Help me please

ps: sorry for my english

JavaScript:

var tmp = data.match(/(\[Rec\].+?),(.+?),(.+?),(\d+),((.|\n)*?min)/ig);

String:

[Rec] name,2016-01-13 00:51:22.447,2015-05-11 00:21:52.497,1,[ 2016.09.11 21:14:56 ] name > some text
[ 2016.09.11 21:19:36 ] name : some text
[ 2016.09.11 21:19:48 ] name : some text
[ 2016.09.11 21:20:07 ] name : some text

30 mins

[Rec] name,2016-09-10 13:55:23.117,2016-04-11 11:51:23.117,1,[ 2016.09.09 20:52:56 ] name > text
[ 2016.09.09 20:53:05 ] name : some text
[ 2016.09.09 20:53:43 ] name : some text
[ 2016.09.09 20:54:23 ] name : some text

40 minutes

expected output:

tmp[1] = [Rec] name
tmp[2] = 2016-01-13 00:51:22.447
tmp[3] = 2015-05-11 00:21:52.497
tmp[4] = 1
tmp[5] = [ 2016.09.11 21:14:56 ] name > some text [ 2016.09.11 21:19:36 ] name : some text [ 2016.09.11 21:19:48 ] name : some text [ 2016.09.11 21:20:07 ] name : some text
30 min

You should never use (.|\n)*?, always replace with [\s\S]*? — Wiktor Stribiżew
– Wiktor Stribiżew, Commented Feb 24, 2017 at 20:58

Jack Graham · Accepted Answer · 2017-02-24 20:58:12Z

1

You want to use Regex.exec(String) instead of String.match(Regex).

Here is a jsfiddle, open the console to see the output.

https://jsfiddle.net/qwaxhk1g/1/

answered Feb 24, 2017 at 20:58

Jack Graham

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Wiktor Stribiżew · Accepted Answer · 2017-02-24 22:06:41Z

It is highly possible you also have carriage returns in your file, and . in JS regex does not match them. You should replace the (.|\n)*? with a much more efficient [\s\S]*? (or [^]*?, though it will only ever work in JS regex).

Also, you seem to need to access capturing group contents, and when you use /g modifier, you need to use run RegExp#exec(String) in a loop to grab all matches together with captures.

var rx = /(\[Rec\].+?),(.+?),(.+?),(\d+),([\s\S]*?min)/ig;
var s = "[Rec] name,2016-01-13 00:51:22.447,2015-05-11 00:21:52.497,1,[ 2016.09.11 21:14:56 ] name > some text\n[ 2016.09.11 21:19:36 ] name : some text\n[ 2016.09.11 21:19:48 ] name : some text\n[ 2016.09.11 21:20:07 ] name : some text\n\n30 mins\n\n[Rec] name,2016-09-10 13:55:23.117,2016-04-11 11:51:23.117,1,[ 2016.09.09 20:52:56 ] name > text\n[ 2016.09.09 20:53:05 ] name : some text\n[ 2016.09.09 20:53:43 ] name : some text\n[ 2016.09.09 20:54:23 ] name : some text\n\n40 minutes";
while ((m=rx.exec(s)) !== null) {
  console.log("Current match:");
  console.log(m[1]);
  console.log(m[2]);
  console.log(m[3]);
  console.log(m[4]);
  console.log(m[5]);
}

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