Regular Expressions 101

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Library entries

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pcre2

Storyblok Assets

Match paths for a.storyblok.com
Submitted by anonymous - 2 days ago
0
pcre2

Init code

Init code
Submitted by anonymous - 2 days ago
0
python

Get All inst of Characters Name

Standard Script format tv
Submitted by SummerRay - 3 days ago
0
pcre2

semantic-release

Teste semantic release
Submitted by leonardo.mendes - 5 days ago
0
pcre2

myspace

myspace
Submitted by anonymous - 6 days ago
0
pcre2

upload paths

upload paths
Submitted by anonymous - 6 days ago
0
pcre2

Find SQL injection opportunities

-
Submitted by anonymous - 6 days ago
0
python

Tool Call

f
Submitted by anonymous - 7 days ago

match valid JSON

Vote

26

Regular Expression
pcre

/
(?(DEFINE) # Note that everything is atomic, JSON does not need backtracking if it's valid # and this prevents catastrophic backtracking (?<json>(?>\s*(?&object)\s*|\s*(?&array)\s*)) (?<object>(?>\{\s*(?>(?&pair)(?>\s*,\s*(?&pair))*)?\s*\})) (?<pair>(?>(?&STRING)\s*:\s*(?&value))) (?<array>(?>\[\s*(?>(?&value)(?>\s*,\s*(?&value))*)?\s*\])) (?<value>(?>true|false|null|(?&STRING)|(?&NUMBER)|(?&object)|(?&array))) (?<STRING>(?>"(?>\\(?>["\\\/bfnrt]|u[a-fA-F0-9]{4})|[^"\\\0-\x1F\x7F]+)*")) (?<NUMBER>(?>-?(?>0|[1-9][0-9]*)(?>\.[0-9]+)?(?>[eE][+-]?[0-9]+)?)) ) \A(?&json)\z
/
x

Description

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Submitted by Mateon1 - 8 years ago