regex101: Validate Wikipedia URL and extract Article Title

Explanation

Pro

^start of line

Group 1((http:|https:){0,1}\/\/.*\.wikipedia\.org){0,1}

{0,1}repeats the group contents below at most once:

Group 2(http:|https:){0,1}

{0,1}repeats the group contents below at most once:

1st Alternativehttp:

http:the literal text http: (case insensitive)

2nd Alternativehttps:

https:the literal text https: (case insensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

.*any character (except for line terminators), repeated any number of times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

wikipediathe literal text wikipedia (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

orgthe literal text org (case insensitive)

Group 3(\/wiki\/|\/w\/){1}

{1}repeats the group contents below exactly 1 time:

1st Alternative\/wiki\/

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

wikithe literal text wiki (case insensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

2nd Alternative\/w\/

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

wthe literal w (119₁₀ / 167₈ / 77₁₆) (case insensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 4(index\.php\?title=){0,1}

{0,1}repeats the group contents below at most once:

indexthe literal text index (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

phpthe literal text php (case insensitive)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

title=the literal text title= (case insensitive)

1st AlternativeUser:

User:the literal text User: (case insensitive)

2nd AlternativeWikipedia:

Wikipedia:the literal text Wikipedia: (case insensitive)

3rd AlternativeWP:

WP:the literal text WP: (case insensitive)

4th AlternativeProject:

Project:the literal text Project: (case insensitive)

5th AlternativeFile:

File:the literal text File: (case insensitive)

6th AlternativeImage:

Image:the literal text Image: (case insensitive)

7th AlternativeMediaWiki:

MediaWiki:the literal text MediaWiki: (case insensitive)

8th AlternativeMW:

MW:the literal text MW: (case insensitive)

9th AlternativeTemplate:

Template:the literal text Template: (case insensitive)

10th AlternativeHelp:

Help:the literal text Help: (case insensitive)

11th AlternativeCategory:

Category:the literal text Category: (case insensitive)

12th AlternativePortal:

Portal:the literal text Portal: (case insensitive)

13th AlternativeDraft:

Draft:the literal text Draft: (case insensitive)

14th AlternativeTimedText:

TimedText:the literal text TimedText: (case insensitive)

15th AlternativeModule:

Module:the literal text Module: (case insensitive)

16th AlternativeGadget:

Gadget:the literal text Gadget: (case insensitive)

17th AlternativeGadget definition:

18th AlternativeTopic:

19th AlternativeEducation Program:

20th AlternativeBook:

21st AlternativeWT:

22nd AlternativeSpecial:

23rd AlternativeWikipedia Talk:

24th AlternativeTalk:

25th AlternativeH:

26th AlternativeCAT:

27th AlternativeUser talk:

28th AlternativeImage Talk:

29th AlternativeMOS:

30th AlternativeP:

31st AlternativeT:

32nd AlternativeMain_Page

Group ARTICLENAME(?<ARTICLENAME>(?!index\.php\?title=)[^&|?|\n]*)

Character Class[&|?]?

.*any character (except for line terminators), repeated any number of times

$end of line

Global pattern flags

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

u modifier: unicode. Enables Unicode-aware matching and escape syntax

g modifier: global. Finds all matches instead of stopping after the first

Quick Reference

26 tokens

Regular Expression

^((http:|https:){0,1}\/\/.*\.wikipedia\.org){0,1}(\/wiki\/|\/w\/){1}(index\.php\?title=){0,1}(?!User:|Wikipedia:|WP:|Project:|File:|Image:|MediaWiki:|MW:|Template:|Help:|Category:|Portal:|Draft:|TimedText:|Module:|Gadget:|Gadget definition:|Topic:|Education Program:|Book:|WT:|Special:|Wikipedia Talk:|Talk:|H:|CAT:|User talk:|Image Talk:|MOS:|P:|T:|Main_Page)(?<ARTICLENAME>(?!index\.php\?title=)[^&|?|\n]*)[&|?]?.*$

Unit Tests

There are no unit tests.