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Questions - regex-group

Improving the performance of an PCRE Regex Pattern

I have the below regex here which is written to support the PRCE/PRCE2 format. However, this throws the following error “Evaluation takes too long. Please check your regular expression.” Is there any ...
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Kamesh

regex

regex-lookarounds

pcre

regex-group

Votes: 0

Answers: 2

Latest Answer

You may try this refactored regex: \b(?>x|order(?>[\W_]*number)?[\W_]*)\d+(*SKIP)(*F)|(?=(?>[._ –-]*\d){9})(?>(?>9|6{3}|0{3}|(?>\d\D*){3}00|(?>\d\D*){5}0{4})(*SKIP)(*F)|\d(?>\D...
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anubhava

Regex Group Name prefix multiple options

I'm performing regex extraction for parsing logs for our SIEM. I'm working with PCRE2. In those logs, I have this problem: I have to extract a field that can be preceded by multiple options and I want...
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Luca Sepe

regex

regex-group

Votes: 0

Answers: 1

Latest Answer

You can use (?:UserType=|ACCESS\sTYPE:)(?<app>[^,;]+) See the regex demo. Details: (?:UserType=|ACCESS\sTYPE:) - either UserType= or ACCESS + whitespace + TYPE: (?<app>[^,;]+) - Group &q...
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Wiktor Stribiżew

FreeRadius Configuration (radiusd.conf) - Regex-Problem unlang

I am currently facing a problem within my Radius configuration and wanted to ask you for help. I'am using the FreeRadius-Version 3.0.23 Within the authorize section in radiusd.conf I am trying to crea...
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FrankTheTank_12345

regex

regex-group

freeradius

radius

Votes: 0

Answers: 1

Latest Answer

According to the FreeRadius documentation: Every time a regular expression is evaluated, whether it matches or not, the capture group values will be cleared. So, in your case, you can reverse the or...
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Wiktor Stribiżew

Match repeating groups with regex with optional parameter in .NET

I need to validate a filtering input with a regex that will be used for a [RegularExpression] attribute on a Filter field in a class used a input model. The input has the following format: [property]~...
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lyuben

.net

regex

regex-group

Votes: 0

Answers: 1

Latest Answer

You can use ^\w+~(?:lte?|n?eq|gte?|contains)~['"][^'"]+['"](?:~(?:and|or)~\w+~(?:lte?|n?eq|gte?|contains)~['"][^'"]+['"])*$ Or, ^(?:\w+~(?:lte?|n?eq|gte?|contains)~['&qu...
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Wiktor Stribiżew

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