Regular Expressions 101

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23

Get path from any text

Created·2023-01-31 14:38
Updated·2023-07-23 20:17
Type·Match
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 ExpressionOpen Workspace

/
<(\w+)(?: \w+ ?= ?("|')?.*\2 ?)*(?:(?:>(?:.*)<\/\1>)|(?:\/>))
/
gm

Description
Created·2024-05-02 22:17
Updated·2024-05-02 22:28
Type·Match
Flavor·PCRE2 (PHP)

Valid HTML Tag Pattern

Which HTML tags are considered invalid:

  • Tags ending with a different tag than what it started. Example: <p>Hello</a>
  • Tags with open attributes (or closed with a different type of quote). Examples: <p style="color:red>Hello</p> or <p style="color:red'>Hello</p>

Which HTML tags are considered valid:

  • Tags ending with the same tag
  • Tags with closed attributes

Notes

  • This pattern does not support html tags inside of others, as it may match the whole parent element's tag.
  • This pattern does match unexistent html tags, which is not worth removing because it would make the pattern too long and also because custom html tags exist.
  • This pattern does support tags that look like this: <img src="https://example.com"/>
Submitted by Ninja
Open Workspace