Regular Expressions 101

Community Patterns

21

Get path from any text

Created·2023-01-31 14:38
Updated·2023-07-23 20:17
Flavor·PCRE2 (PHP)
Recommended·
Get path (windows style) from any type of text (error message, e-mail corps ...), quoted or not. THIS IS THE SINGLE LINE VERSION ! If you want understand how it work or edit it, go https://regex101.com/r/7o2fyy Relative path are not supported The goal is to catch what "Look like" a path. See the limitations UNC path and prefix path like //./], [//?/] or [//./UNC/] are allowed some url path like [file:///C:/] or [file://] are allowed Catch path quoted with ["] and [']. But these quotes are include with the catch Quoted path is not concerned by limitations Limitations : (only unquoted path) [dot] and [space] is allowed, but not in a row [dot+space] or [space+dot at end of file name isn't catched INSIDE A NAME FILE (or last directory if it is a path to a directory) : [comma] is not supported (it stop the catch) after a first [dot], any [space] stop the catch after a [space], catch is stoped if next character is not a [letter], [digit] or [-] so, double [space] stop the catch Compatibility compatible PCRE, PCRE2 AutoHotkey : don't forget to escape "%" in "`%" /!\ Powershell and .Net /!\\ : this regex need some modification to be interpreted by powershell. You have to replace each (?&CapturGroupName) by \k. Use this powershell code to do this replacement : ` $powershellRegex = @' [Put here the regex to replace (?&CapturGroupName) with \k] '@ -replace '\(\?&(\w+)\)', '\k' ` This example code must return : [Put here the regex to replace \k with \k]
Submitted by nitrateag

Community Library Entry

1

Regular Expression
Created·2020-04-24 08:14
Updated·2024-01-08 13:19
Flavor·Python

r"
(?<!\d) (?: [0-9]{4} (?P<sep1>[-/.])? (?: (?:(?(sep1)0?|0)[1-9]|1[0-2]) (?(sep1)(?P=sep1)|) (?:(?(sep1)0?|0)[1-9]|1[0-9]|2[0-8]) |(?:(?(sep1)0?|0)[13-9]|1[0-2]) (?(sep1)(?P=sep1)|) (?:29|30) |(?:(?(sep1)0?|0)[13578]|1[02]) (?(sep1)(?P=sep1)|) (?:31) ) | (?: [0-9]{2} (?: 0[48] |[2468][048] |[13579][26] ) |(?: 0[48] |[2468][048] |[13579][26] )00 ) (?P<sep2>[-/.]?) (?(sep2)0?|0)2 (?(sep2)(?P=sep2)|) (?:29) ) (?!\d)
"
gmx
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Description

YYYYMMDD YYYY-MM-DD YYYY.MM.DD YYYY/MM/DD YYYY-M-D YYYY.M.D YYYY/M/D

If the sep[-./] is not given, "0" must appear before a single num. such as 20180203, 20190905. If the sep [-./] is given, the prefix 0 is optional.

Submitted by anonymous