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

1

Regular Expression
Created·2015-10-31 00:02
Flavor·PCRE (Legacy)

/
^[ \t]*(?:(?<label>[a-zA-Z0-9_]+):[ \t]*)? (?: (?<op>[a-zA-Z0-9_\.]+) (?: (?: (?: [ \t]* (?: (?<h0>[-+]?[0oO]?[xX][a-fA-F0-9]{1,8}) | (?<o0>[-+]?[0oO][0-7]+) | (?<b0>[-+]?[0oO]?[bB][01]{1,32}) | (?<l0>[a-zA-Z0-9_]+) | (?<d0>[-+]?\#?\d+) ) [ \t]* (?:\((?<r0b>\$[a-zA-Z0-9_]{2,5})\))?[ \t]* ) | [ \t]*(?<r0>\$[a-zA-Z0-9_]{2,5})[ \t]* (?: (?: ,[ \t]* (?: (?<d1>[-+]?\#?\d+) | (?<h1>[-+]?[0oO]?[xX][a-fA-F0-9]{1,8}) | (?<o1>[-+]?[0oO][0-7]+) | (?<b1>[-+]?[0oO]?[bB][01]{1,32}) | (?<l1>[a-zA-Z0-9_]+) ) [ \t]* (?:\((?<r1b>\$[a-zA-Z0-9_]{2,5})\))?[ \t]* ) | ,[ \t]*(?<r1>\$[a-zA-Z0-9_]{2,5})[ \t]* (?: (?: ,[ \t]* (?: (?<d2>[-+]?\#?\d+) | (?<h2>[-+]?[0oO]?[xX][a-fA-F0-9]{1,8}) | (?<o2>[-+]?[0oO][0-7]+) | (?<b2>[-+]?[0oO]?[bB][01]{1,32}) | (?<l2>[a-zA-Z0-9_]+) ) [ \t]* (?:\((?<r2b>\$[a-zA-Z0-9_]{2,5})\))?[ \t]* ) | ,[ \t]*(?<r2>\$[a-zA-Z0-9_]{2,5})[ \t]* )? )? )? )? )? (?<pseudo_op> \. (?<name>[a-zA-Z]+) [ \t]* (?<arg> (?<hp0>[-+]?[0oO]?[xX][a-fA-F0-9]{1,8}) | (?<bp0>[-+]?[0oO]?[bB][01]{1,32}) | (?<op0>[-+]?[0oO][0-7]+) | (?<dp0>[-+]?\#?\d+) | (?<lp0>[a-zA-Z0-9_]+) ) [ \t]* )? (?:[ \t]*(?<comment>[!;].*)?) $
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gxm
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Description

recognizes the various parts of the LC-2200 language.

Submitted by Chris Ottersen