Regular Expressions 101

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Community Patterns

1

XTREAM / M3U Link

PCRE2 (PHP >=7.3)
Matches the M3U links provided by Xtream servers to stream IPTV
Submitted by Ɒ○ꝑẹЄпс○ὔпדּẹꭆ - 9 months ago
1

Zuma Game

PCRE2 (PHP >=7.3)
Tests if a Zuma board can be cleared completely
Submitted by wheatup - 9 months ago (Last modified 9 months ago)
1

Blibli apps url

PCRE2 (PHP >=7.3)
blibli apps marketplace url
Submitted by ival - 9 months ago
1

Blibli web url

PCRE2 (PHP >=7.3)
Blibli marketplace web url
Submitted by ival - 9 months ago
1

Username@Hostname:port w capture groups

PCRE2 (PHP >=7.3)
used to parse alphanum usernames @ hostnames w portnumbers utilizing capture groups
Submitted by Johnathan Smithers - 9 months ago (Last modified 6 months ago)
1

Detect Multiple File Extensions

PCRE (PHP <7.3)
I use this to find files with two or more extensions (i.e. file.txt.txt). This will work with files with 3 or 4 character or numeric (or both) file extensions (i.e. pdf, xlsx).
Submitted by Curve - 9 months ago (Last modified 9 months ago)
1

Unary prime numbers

PCRE2 (PHP >=7.3)
Matches all lines whose length is a prime number and only contain the character "1".
Submitted by pablo - 10 months ago (Last modified 10 months ago)
1

URL

ECMAScript (JavaScript)
Match a URL and capture its parts. Please suggest your improvements.
Submitted by Lamer217 - 10 months ago
1

JavaScript number literals

ECMAScript (JavaScript)
Should match any valid JavaScript number literal incl. bigint. See EDIT 4 in this StackOverflow answer by me for matching JS numbers. open in regex101 editor - example matches and unit tests\ Regulex%7C%5BoO%5D%3F%5B0-7%5D(%3F%3A_%3F%5B0-7%5D%2B)%7C%5BxX%5D%5B0-9a-fA-F%5D(%3F%3A_%3F%5B0-9a-fA-F%5D...
Submitted by MAZ01001 - 10 months ago (Last modified 7 months ago)
1

Excel CSV Parser

ECMAScript (JavaScript)
I'm dealing quite a lot w this. This CSV Parser is used for Js (particularly for my current project wrting script for After Effects through ExtendScript)
Submitted by binguine - 10 months ago
1

HID Usage Tables to Rust Enum

PCRE2 (PHP >=7.3)
A regex to transform tables from https://usb.org/sites/default/files/hut1_2.pdf to rust enum items After pasting be sure to remove the whitespaces
Submitted by dzervas - 10 months ago
1

Randomizer Template

ECMAScript (JavaScript)
Randomizer Template
Submitted by HoshinoSuzumi<master@uniiem.com> - 10 months ago (Last modified 10 months ago)
1

(([a-z]*\d+[a-z\d\-\\\/]*[\s\,]+)+)(?=([a-z]+[\s\,\b$]))

PCRE2 (PHP >=7.3)
Подряд идущие слова в которых обязательно должна быть цифра. Выбирать до первого слова без цифр. Также в словах могут быть символы /-\ До цифр в слове могут быть только буквы.
Submitted by anonymous - 10 months ago
1

Obsidian.md Remotely Save

PCRE2 (PHP >=7.3)
This regex is for Obsidian's plugin Remotely Save. This helps ignoring all config files except some.
Submitted by LucasD - 10 months ago
1

Remover \x160 e arrumar texto para dados com tabulação

ECMAScript (JavaScript)
Remove caracteres ocultos (\x160) e arruma textos com espaços extras antes e depois da palavra para dados tabulados (com tab)
Submitted by Danilo Ikebara - 10 months ago (Last modified 10 months ago)
1

extract url

PCRE2 (PHP >=7.3)
extract url
Submitted by anonymous - 10 months ago
1

Multiple substrings between string and a space

PCRE2 (PHP >=7.3)
Multiple substrings between string and a space
Submitted by anonymous - 10 months ago
2

Quartz CRON Validation with groups

ECMAScript (JavaScript)
CRON validation Validates CRON pattern (Quartz) and supports groups. Useful for e.g. typescript or other typed languages. The following greoups are covered: second...
Submitted by Nico Vitt - 10 months ago
1

Ateco Code Validation

Python
Ateco Groups Regex to identify the groups that make up the ateco code, based on its structure. More details: https://www.istat.it/it/archivio/17888 Valid Ateco: 01 - 28.2 - 24.45 - 46.74.1 - 46.73.22...
Submitted by christian dalena - 10 months ago
1

T Launcher Regex

PCRE2 (PHP >=7.3)
Checks for t launcher
Submitted by anonymous - 10 months ago (Last modified 10 months ago)
1...2728293031...901

Community Library Entry

1

Regular Expression
ECMAScript (JavaScript)

/
^([+-]?(?:NaN|Infinity|0(?:[bB][01](?:_?[01]+)*|[oO]?[0-7](?:_?[0-7]+)*|[xX][0-9a-fA-F](?:_?[0-9a-fA-F]+)*)|(?:(?:0|0(?:[0-9](?:_?[0-9]+)*)?[89](?:[0-9](?:_?[0-9]+)*)?|[1-9](?:_?[0-9]+)*)(?:\.(?:[0-9](?:_?[0-9]+)*)?)?|\.[0-9](?:_?[0-9]+)*)(?:[eE][+-]?[0-9](?:_?[0-9]+)*)?)|-?(?:0(?:[bB][01](?:_?[01]+)*|[oO][0-7](?:_?[0-7]+)*|[xX][0-9a-fA-F](?:_?[0-9a-fA-F]+)*)?|[1-9](?:_?[0-9]+)*)n)$
/
gm
Open regex in editor

Description

Should match any valid JavaScript number literal incl. bigint.

See EDIT 4 in this StackOverflow answer by me for matching JS numbers.

open in regex101 editor - example matches and unit tests
Regulex - colored graph
Regexper - slightly smaller and less colored graph

  • +/- Infinity and NaN
  • _ as numerical separator between any two digits
  • Number
    • leading/trailing . (decimal point)
    • leading 0s
      • [!] may be interpreted as octal (see below)
    • prefix
      • 0b binary
        • no . or scientific notation
      • 0o octal
        • [!] also implicit with leading 0 and when all digits (before any .) are below 8
        • no . or scientific notation
      • 0x hexadecimal
        • no . or scientific notation
          • [!] the E in scientific notation will be part of the hexadecimal number
  • BigInt
    • explicit via suffix n
    • no leading 0s except after a 0o/0x/0b prefix
    • no +, ., or scientific notation

Note, Number() (parsing from a string) allows leading/trailing whitespace, but not _, and leading 0s are not an implicit octal prefix, (and ofc no BigInt suffix)

Submitted by MAZ01001 - 10 months ago (Last modified 7 months ago)