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·2016-08-19 05:32
Flavor·PCRE (Legacy)

/
^(chr)?(1|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16|17|18|19|20|21|22|X|Y)((:|\s+)\d+((-|\s+)\d+((_|\s+)[ACGT]+((\/|\s+)[ACGT]+)?)?)?)?$
/
i
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Description

This expression matches human genomic coordinates, similat to those being used by genome browsers (e.g. the UCSC Genome Browser). It can match: chromosome, chromosome start, chromosome start end, chromosome start end reference sequence, chromosome start end reference sequence alternative sequence. The last two are useful when searching for mutations.

Examples: 1 # matches chromosome 1 chr1 # matches chromosome 1 1:12345 # matches chromosome 1, start at base 12345 chr11:12345-78900 # matches chromosome 1, start at base 12345, end at base 78900 chr11 12345 78900 # matches chromosome 1, start at base 12345, end at base 78900 11:12345-12345_A/G # matches chromosome 1, start at base 12345, end at base 12345 and a substitution of A to G 11 12345 12347 AG GC # matches chromosome 1, start at base 12345, end at base 12345 and a substitution of AG to GC

Submitted by Panagiotis Moulos