Regular Expressions 101

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Community Patterns

0

NLP_Regex

Python
Learning Regex for NLP
Submitted by anonymous - a year ago
0

Nginx parse error log msg

Python
Regex to parse nginx error logs, that can't be converted to json in nginx. To use with fluentbit update group labels from "?P" to "?"
Submitted by diepes - a year ago
0

All Strings for same-lines, Syntax or Parsing

PCRE2 (PHP >=7.3)
All Strings on One Line Php java javascript python escapes all regex...
Submitted by kai gouthro - a year ago (Last modified a year ago)
0

CUIT Argentina sin guiones

PCRE2 (PHP >=7.3)
CUIT Argentina sin guiones
Submitted by Lucas David Ferrero - a year ago
0

telegram links

PCRE2 (PHP >=7.3)
.
Submitted by AC Lover - a year ago (Last modified a year ago)
0

Remove .html from url

PCRE2 (PHP >=7.3)
I used in Nginx to rewrite the location from http://example.com/about.html to http://example.com/about
Submitted by Vijay Amirtha Raj J - a year ago
0

Bangladeshi phone numbers

ECMAScript (JavaScript)
Matches all Bangladeshi SIM numbers
Submitted by Mushfiq Talha - a year ago (Last modified a year ago)
0

Retrieve all number version from tag

PCRE2 (PHP >=7.3)
This regex will retrieve all number in a given tag
Submitted by Marc Masure - a year ago
0

comma separated ESPEC

Python
ESPEC
Submitted by Ian Cole - a year ago
0

Add quotes to a malformed JSON string

ECMAScript (JavaScript)
This Regex allows to add double-quotes to a JSON string that is missing them. It assumes we have a space after the ":" and also after the ",".
Submitted by anonymous - a year ago
0

whois

PCRE (PHP <7.3)
whois find param
Submitted by anonymous - a year ago
0

选择题题目与选项匹配

Python
对有ABCD四个选项的选择题题目进行匹配
Submitted by Wang Miao - a year ago
0

Old Discord Username Match

ECMAScript (JavaScript)
Detect and capture every part of the old discord username system
Submitted by N0de - a year ago
0

New Discord Username

ECMAScript (JavaScript)
Validates if a username is valid or not on the new discord username system
Submitted by anonymous - a year ago
0

AT+ - Image

PCRE2 (PHP >=7.3)
parse at+ syntax
Submitted by Carsten - a year ago
0

Attribute value

PCRE2 (PHP >=7.3)
eeee
Submitted by Me - a year ago
0

Fate Stay/Night (PC/JP) [Py]

Python
Attempting to parse Fate/Stay Night scripts nicely
Submitted by anonymous - a year ago
0

Fate stay/night [HuneX/PSV]

Python
Fate stay/night PS Vita version parsing
Submitted by anonymous - a year ago (Last modified a year ago)
0

RegEx for matching PDF files in browser

PCRE2 (PHP >=7.3)
Made for my niche use of adding it to match either PDF files that being viewed directly from a website or when viewed from your local computer. This was done so that I can add it on my usercontent.css file in Firefox with the @-moz-document url-prefix
Submitted by Benji The Doggy - a year ago (Last modified a year ago)
0

legal edition of DCA

ECMAScript (JavaScript)
Extraigo la fecha del PDF de la edición legal del diario de Centroamérica
Submitted by anonymous - a year ago
1...898899900901902

Community Library Entry

1

Regular Expression
PCRE (PHP <7.3)

/
(?(DEFINE) (?<addr_spec> (?&local_part) @ (?&domain) ) (?<local_part> (?&dot_atom) | (?&quoted_string) | (?&obs_local_part) ) (?<domain> (?&dot_atom) | (?&domain_literal) | (?&obs_domain) ) (?<domain_literal> (?&CFWS)? \[ (?: (?&FWS)? (?&dtext) )* (?&FWS)? \] (?&CFWS)? ) (?<dtext> [\x21-\x5a] | [\x5e-\x7e] | (?&obs_dtext) ) (?<quoted_pair> \\ (?: (?&VCHAR) | (?&WSP) ) | (?&obs_qp) ) (?<dot_atom> (?&CFWS)? (?&dot_atom_text) (?&CFWS)? ) (?<dot_atom_text> (?&atext) (?: \. (?&atext) )* ) (?<atext> [a-zA-Z0-9!#$%&'*+\/=?^_`{|}~-]+ ) (?<atom> (?&CFWS)? (?&atext) (?&CFWS)? ) (?<word> (?&atom) | (?&quoted_string) ) (?<quoted_string> (?&CFWS)? " (?: (?&FWS)? (?&qcontent) )* (?&FWS)? " (?&CFWS)? ) (?<qcontent> (?&qtext) | (?&quoted_pair) ) (?<qtext> \x21 | [\x23-\x5b] | [\x5d-\x7e] | (?&obs_qtext) ) # comments and whitespace (?<FWS> (?: (?&WSP)* \r\n )? (?&WSP)+ | (?&obs_FWS) ) (?<CFWS> (?: (?&FWS)? (?&comment) )+ (?&FWS)? | (?&FWS) ) (?<comment> \( (?: (?&FWS)? (?&ccontent) )* (?&FWS)? \) ) (?<ccontent> (?&ctext) | (?&quoted_pair) | (?&comment) ) (?<ctext> [\x21-\x27] | [\x2a-\x5b] | [\x5d-\x7e] | (?&obs_ctext) ) # obsolete tokens (?<obs_domain> (?&atom) (?: \. (?&atom) )* ) (?<obs_local_part> (?&word) (?: \. (?&word) )* ) (?<obs_dtext> (?&obs_NO_WS_CTL) | (?&quoted_pair) ) (?<obs_qp> \\ (?: \x00 | (?&obs_NO_WS_CTL) | \n | \r ) ) (?<obs_FWS> (?&WSP)+ (?: \r\n (?&WSP)+ )* ) (?<obs_ctext> (?&obs_NO_WS_CTL) ) (?<obs_qtext> (?&obs_NO_WS_CTL) ) (?<obs_NO_WS_CTL> [\x01-\x08] | \x0b | \x0c | [\x0e-\x1f] | \x7f ) # character class definitions (?<VCHAR> [\x21-\x7E] ) (?<WSP> [ \t] ) ) ^(?&addr_spec)$
/
xmg
Open regex in editor

Description

The BNF rules from RFC 5322 transformed to PCRE by Nikita Popov and described in the post http://nikic.github.io/2012/06/15/The-true-power-of-regular-expressions.html.

Submitted by Michael Musson - 7 years ago