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

-2

Regular Expression
Created·2015-06-16 12:40
Flavor·ECMAScript (JavaScript)

/
^(((\*|(\d\d?))(\/\d\d?)?)|(\d\d?\-\d\d?))(,(((\*|(\d\d?))(\/\d\d?)?)|(\d\d?\-\d\d?)))*\s(((\*|(\d\d?))(\/\d\d?)?)|(\d\d?\-\d\d?))(,(((\*|(\d\d?))(\/\d\d?)?)|(\d\d?\-\d\d?)))*\s(((\*|(\d\d?))(\/\d\d?)?)|(\d\d?\-\d\d?))(,(((\*|(\d\d?))(\/\d\d?)?)|(\d\d?\-\d\d?)))*\s(\?|(((\*|(\d\d?L?))(\/\d\d?)?)|(\d\d?L?\-\d\d?L?)|L|(\d\d?W))(,(((\*|(\d\d?L?))(\/\d\d?)?)|(\d\d?L?\-\d\d?L?)|L|(\d\d?W)))*)\s(((\*|(\d|10|11|12|JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC))(\/\d\d?)?)|((\d|10|11|12|JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC)\-(\d|10|11|12|JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC)))(,(((\*|(\d|10|11|12|JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC))(\/\d\d?)?)|((\d|10|11|12|JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC)\-(\d|10|11|12|JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC))))*\s(((\*|([0-7]|MON|TUE|WED|THU|FRI|SAT|SUN)L?)(\/\d\d?)?)|(([0-7]|MON|TUE|WED|THU|FRI|SAT|SUN)L?\-([0-7]|MON|TUE|WED|THU|FRI|SAT|SUN)L?)|([0-7]|MON|TUE|WED|THU|FRI|SAT|SUN)L?#([1-5]))(,(((\*|([0-7]|MON|TUE|WED|THU|FRI|SAT|SUN)L?)(\/\d\d?)?)|(([0-7]|MON|TUE|WED|THU|FRI|SAT|SUN)L?\-([0-7]|MON|TUE|WED|THU|FRI|SAT|SUN)L?)|([0-7]|MON|TUE|WED|THU|FRI|SAT|SUN)L?#([1-5])))*$
/
gmi
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Description

This is a relaxed cron validation, meaning that any valid cron expression should pass this; but not anything that passes regex validation is a good cron expression. Used as preliminary validation in web ui.

Supports all special characters. Includes seconds field.

Submitted by enlait