regular expression get a string between two strings

Question

I have this string :

# userid name uniqueid connected ping loss state rate
# 529 2 "arioch83" STEAM_1:0:86796179 55:58 99 0 active 80000
# 619 3 "Snake" STEAM_1:0:27678629 06:42 61 0 active 80000
# 622 4 "Captain_Selleri" STEAM_1:1:47927314 03:25 44 0 active 80000
# 583 5 "krN[786]" STEAM_1:1:14638235 28:53 53 0 active 128000
# 621 6 "Giack" STEAM_1:1:67468100 04:44 129 0 active 80000
# 326 7 "Urkrass" STEAM_1:0:55150382  3:02:31 51 0 active 80000
#613 "Vinny" BOT active
# 584 9 "Tkappa" STEAM_1:0:32266787 27:55 360 0 active 80000
# 605 10 "Narpok19" STEAM_1:0:44838130 14:36 67 0 active 80000
# 551 11 "robbetto83" STEAM_1:1:63675894 50:10 86 0 active 80000
# 530 12 "XxKazuyaxX" STEAM_1:0:18676379 55:57 68 0 active 80000
# 623 13 "beut3d - Keyser Söze" STEAM_1:0:14500718 00:29 70 0 active 80000
# 602 15 "Homroy" STEAM_1:1:7870901 16:34 169 0 active 80000
# 607 16 "[Bloody]Eagle" STEAM_1:1:59567346 09:14 77 0 active 80000
#615 "Jeff" BOT active
# 587 18 "Heisenberg" STEAM_1:1:61427218 25:15 81 0 active 80000
#end

And I want to get string between "# userid name uniqueid connected ping loss state rate" and "#end". I tryied several regex based on what I found on stackoverflow but none works :( Here is my last attempt

var matches = text.match(/# userid name uniqueid connected ping loss state rate(.+)\&#end/);
                if (matches.length > 1) {
                    alert(matches[1]);
                }

As you can see I know nothing about regex... any good tuto about those ?

thanks,

For what your are looking for? Please explain a bit more.

Braj
– Braj

2014-07-11 23:50:03 +00:00
Commented Jul 11, 2014 at 23:50 — Braj
– Braj, Commented Jul 11, 2014 at 23:50
a toy, a guide, a clue

mechalynx
– mechalynx

2014-07-11 23:50:53 +00:00
Commented Jul 11, 2014 at 23:50 — mechalynx
– mechalynx, Commented Jul 11, 2014 at 23:50

hwnd · Accepted Answer · 2014-07-12 00:40:52Z

5

You need to be able to match across multiple lines. You are looking for the s (dotall) modifier. Unfortunately this modifier does not exist in JavaScript. A common workaround is replacing the dot . with the following:

[\S\s]

So you can use the following regular expression:

/# userid name uniqueid connected ping loss state rate([\S\s]*?)#end/

Explanation:

(               # group and capture to \1:
  [\S\s]*?      #   any character of: 
                #    non-whitespace (all but \n, \r, \t, \f, and " "), 
                #    whitespace (\n, \r, \t, \f, and " ") 
                #    (0 or more times matching the least amount possible)
)               # end of \1

JavaScript Demo

edited Jul 12, 2014 at 0:40

answered Jul 11, 2014 at 23:54

hwnd

70.9k4 gold badges100 silver badges135 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

Braj Over a year ago

we can use [\W\w]* and [\D\d]* as well. Nice answer.

lrn Over a year ago

You should be able to use [^]* too.

hwnd Over a year ago

There are many ways, yes, as I stated A common workaround...

Casimir et Hippolyte Over a year ago

@hwnd: if I put "groink#end" after the example string, your pattern will match it, you need to use a lazy quantifier.

go-oleg · Accepted Answer · 2014-07-11 23:58:34Z

0

An alternative to using regular expressions, is to split the string by \n and extract the part that you want (everything from the second line to the second to last line):

var contents = "your contents here...";

var contentArray = contents.split( "\n" );

// extract the array elements from the second to the second from last and re-join with `\n`
console.log( contentArray.slice( 1, contentArray.length - 2 ).join( "\n" ) );

answered Jul 11, 2014 at 23:58

go-oleg

19.5k3 gold badges46 silver badges46 bronze badges

Comments

Braj · Accepted Answer · 2014-07-12 00:08:26Z

0

Get all the lines that is not started by #userid and #end

/^(?!#\s*(userid|end)).*/gmi

Online demo

edited Jul 12, 2014 at 0:08

answered Jul 12, 2014 at 0:01

Braj

46.9k5 gold badges63 silver badges77 bronze badges

Comments

Casimir et Hippolyte · Accepted Answer · 2014-07-12 00:17:18Z

0

You can use this pattern that uses the fact that "#end" is at the start of a line:

/# userid name uniqueid connected ping loss state rate\n((?:.*\n)*?)#end/

But an other efficient way is to split the log into lines and to look at the start and end lines in the resulting list.

answered Jul 12, 2014 at 0:17

Casimir et Hippolyte

90k5 gold badges102 silver badges131 bronze badges

Collectives™ on Stack Overflow

regular expression get a string between two strings

4 Answers 4

4 Comments

Comments

Comments

Comments

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

4 Comments

Comments

Comments

Comments

Related