Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

r"
"
g

Test String

Code Generator

Language

Generated Code

import Foundation let pattern = #",\s*file\s*:\s*"?\'?([^"\']*)"# let regex = try! NSRegularExpression(pattern: pattern) let testString = ##"jwplayer("vplayer").setup({sources:[{description:'82yekcjjfnp8',file:rtmp://149.202.80.234:19350/vod/mp4:01/00146/82yekcjjfnp8_n?h=h75fusefglekalhulo4ta4uxasktzhpsp4ptbjlplp7quqflff7nytwrypwq'},{description:'82yekcjjfnp8',file:"http://149.202.80.234/h75fusefglekalhulo4ta4uxasktzhpsp4ptbjlplp7quqflff7nytwrypwq/v.mp4"}],image:"http://149.202.80.234/i/01/00146/82yekcjjfnp8.jpg",duration:"3148",width:"100%",height:"100%",primary:"flash",androidhls:"true",startparam:"start",plugins:{"http://streamplay.to/player6/lightsout.js":{}},tracks:[],captions:{color:'#dacf84',fontSize:16,fontFamily:"Arial",backgroundOpacity:0},"sharing":{code:"%3CIFRAME SRC%3D%22http%3A%2F%2Fstreamplay.to%2Fembed-82yekcjjfnp8.html%22 FRAMEBORDER%3D0 MARGINWIDTH%3D0 MARGINHEIGHT%3D0 SCROLLING%3DNO allowfullscreen%3D%22true%22 WIDTH%3D954 HEIGHT%3D537%3E%3C%2FIFRAME%3E",link:"http://streamplay.to/82yekcjjfnp8"},rtmp:{bufferlength:5},stretching:'uniform',abouttext:'StreamPlay 6.0',aboutlink:'http://streamplay.to',logo:{file:'http://streamplay.to/favicon-48x48.png',hide:true,link:'http://streamplay.to/',margin:12}});var vvplay,vvad;var tt730250=0;var p0730250=0;jwplayer().onSeek(function(x){p0730250=-1});jwplayer().onTime(function(x){if(p0730250>0)tt730250+=x.position-p0730250;p0730250=x.position;if(0!=0&&tt730250>=0){p0730250=-1;jwplayer().stop();jwplayer().setFullscreen(false);$('#play_limit_box').show();$('div.video_ad').show()}if(5>0&&tt730250>=5&&vvad!=1){vvad=1;$('div.video_ad_fadein').fadeIn('slow')}});jwplayer().onPlay(function(x){doPlay(x)});jwplayer().onComplete(function(){$('div.video_ad').show()});jwplayer().onReady(function(){if(isPlayerReady)isPlayerReady()});function getMediaId(){return'2020'};function getDesc(){return'82yekcjjfnp8'};function sendGa(category,extra){if(typeof ga=='function')ga('send','event',category,getDesc(),getMediaId()+(extra?' '+extra:''))};function doPlay(x){$('div.video_ad').hide();if(vvplay)return;vvplay=1;$.get('http://streamplay.to/dl?op=view&file_code=82yekcjjfnp8&hash=730250-84-0-1471898347-bf33ea5e51b77e725853a3a36e6fbdf7');if(jwplayer().getPosition()==0)sendGa('Play')}"## let stringRange = NSRange(location: 0, length: testString.utf16.count) let matches = regex.matches(in: testString, range: stringRange) var result: [[String]] = [] for match in matches { var groups: [String] = [] for rangeIndex in 1 ..< match.numberOfRanges { let nsRange = match.range(at: rangeIndex) guard !NSEqualRanges(nsRange, NSMakeRange(NSNotFound, 0)) else { continue } let string = (testString as NSString).substring(with: nsRange) groups.append(string) } if !groups.isEmpty { result.append(groups) } } print(result)

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Swift 5.2, please visit: https://developer.apple.com/documentation/foundation/nsregularexpression