Matching all contents between curly braces - Regex

Question

I would like to parse between { and }, . I searched and already tried many solutions from stackoverflow but not all seems to be working.

The best solution worked for me is Extracting all values between curly braces regex php but it fails when there are nested curly braces. I tried {\K[^}]*(?=},) eg: Id: 1181 doesn't match.

Sample Data

{
    Id: 1180
    Name: "ABCD"
    Type: 1
    Json: <"
        Some sample data
    ">
},
{
    Id: 1181
    Name: "EFGH"
    Type: 4
    More: Value
    More: Value
    Json: <"
        Some sample data "{ with more curly braces }" and "{ more curly braces }";
    ">
},
{
    Id: 1182
    Name: "IJKL"
    Type: 2
    Json: <"
        Some sample data
    ">
},

Sublime result

You may use [`$regex = '/{ ( (?: [^{}]* | (?R) )* ) }/x';`](https://regex101.com/r/nF580h/1) — anubhava, Jun 22 '18 at 17:00
@CasimiretHippolyte Well, a Company provided me that data and want me to store in database. — Rahul Dev, Jun 22 '18 at 17:27

score 2 · Accepted Answer · answered Jun 22 '18 at 18:47

2

You can use this recursive regex in PHP:

$regex = '/ { ( (?: [^{}]* | (?R) )* ) } /x';

RegEx Demo

answered Jun 22 '18 at 18:47

anubhava

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2

An explanation would be great. – Rahul Dev Jun 22 '18 at 19:22
I have linked official PHP page on recursive regex. – anubhava Jun 22 '18 at 19:30
I get an error "Invalid group" in NodeJS. Any idea why? – Maor Ben Mar 27 '21 at 11:28
`NodeJS` doesn't support PCRE hence recursive regex cannot be used. – anubhava Mar 27 '21 at 11:29

Philipp · Answer 2 · 2018-06-22T17:55:05.617

Without a specification of this format, there's no clean solution to parse the input. Using regex only partly help you, as there could be practical anything inside the "Json" field.

If you need a quick and dirty solution, you could use the fact, that the curlies are at the start of the line.

$m = preg_split('~^},$~m', $data);

or

preg_match_all('/\{.*?^\},$/ms', $str, $matches, PREG_SET_ORDER);

From there on, you could process the data however you like.

Matching all contents between curly braces - Regex

2 Answers2