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·2018-08-01 09:22
Flavor·Python

r"
(?P<remote_addr>(?:^|\b(?<!\.))(?:1?\d\d?|2[0-4]\d|25[0-5])(?:\.(?:1?\d\d?|2[0-4]\d|25[0-5])){3}(?=$|[^\w.]))\s-\s(?P<remote_usr>-|[a-z_][a-z0-9_]{0,30})\s(?P<date_time>\[(?P<date>[0-2][0-9]\/\w{3}\/[12]\d{3}):(?P<time>\d\d:\d\d:\d\d).*\])\s(?P<request>\"(?P<req_method>GET|POST|HEAD|PUT|DELETE|CONNECT|OPTIONS|TRACE|PATCH)\s(?P<req_uri>\/[^\s]*)\s(?P<http_ver>HTTP/\d\.\d)\")\s(?P<status>\d{3})\s(?P<body_byte_sent>\d+)\s\"(?P<http_referer>[^\s]+)\"\s\"(?P<user_agent>[^\"]+)\"\s\"(?P<forward_for>[^\"]+)\"
"
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Description

Simple regex for nginx access log file name

Submitted by anonymous