Regular Expressions 101

Community Patterns

22

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

0

Regular Expression
Created·2022-06-05 07:41
Flavor·JavaScript

/
(?:^|)(?:(?<=(?:font-family[:] ?))['"](.+?)['"]|(?<=(?:font-weight[:])) ?(.+?)|(?<=(?:font-style[:])) ?(.+?)|(?<=src: ?url[(])(?:['"]?data:(.+?)[;,](base64)[,])(.+?)(?:['"]?[)])(?:[\n\s ]?format[(]['"](\S+)['"][)])?)(?:[;][\n])(?:|$)
/
mdg
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Description

var FONTFACE_PATTERN = /(?:^|)(?:(?<=(?:font-family[:] ?))['"](.+?)['"]|(?<=(?:font-weight[:])) ?(.+?)|(?<=(?:font-style[:])) ?(.+?)|(?<=src: ?url[(])(?:['"]?data:(.+?)[;,](base64)[,])(.+?)(?:['"]?[)])(?:[\n\s ]?format[(]['"](\S+)['"][)])?)(?:[;][\n])(?:|$)/mdg

Rudimentary pattern for matching base64-embedded webfonts in CSS stylesheets, including:

  • font-family
  • font-style
  • font-weight

Also matches the various parts of the datauri sequence:

  • mime-type
  • charset
  • format(...)
  • and the base64 string itself

Includes the multi-line and global modifier flags to match multiple @font-face rules in a single document.


MIT © Nicholas Berlette

Submitted by Nicholas Berlette (@nberlette)