How to use a regex to extract a URL from a JavaScript function? - regex

Question

I tried to learn regex to do this simple task, I tested may patterns using regex101.com editor but with no success.
I want to extract this link (http://mp3lg4.tdf-cdn.com/9243/lag_164753.mp3) from this javascript text, please note that the links doesn't always end with mp3, it could end with anything.
JavaScript Text:
function reqListener () {
var div = document.createElement("div");
div.innerHTML = new XMLSerializer().serializeToString(this.responseXML.documentElement);
document.body.insertBefore(div, document.body.childNodes[0]);
}
var oReq = new XMLHttpRequest();
oReq.addEventListener("load", reqListener);
oReq.open("GET", "//static.radio.fr/inc/v2/images/icons/icon-sprites.svg?_=93cbcb9ebf4e2d5276480a0d9c06c653056f0d85");
oReq.send();
var environment = {
develop: false,
production: true,
debug: false
};
if (window.environment && window.environment.production) {
window.console.debug = function() {};
window.console.log = function() {};
}
var require = {
baseUrl: "/inc/v2/js",
config: {
'logger': {
enabled: false,
filter: (window.environment && window.environment.develop) && (window.location.search.indexOf('test_production=') === -1) ? 'debug' : 'info'
},
'components/station/stationService': {
station: {"continent":"Europe","country":"France","logo300x300":"http://static.radio.fr/images/broadcasts/15/43/8275/1/c300.png","city":"Paris","stationType":"radio_station","description":"Virgin Radio est une station de radio musicale privée Française. Elle a été créée en 2008, suite au changement de nom de la radio Europe 2, et fait partie du groupe Lagardère SCA. La radio cible une audience de jeunes adultes grâce aux hits Electro-Rock et Pop qu’elle propose. L’audience de la chaîne dépasse les 2,7 millions d’auditeurs quotidiens.\r\nCette radio FM est disponible dorénavant par internet grâce à ses flux de diffusion MP3 de 64 et 128 kbps.\r\nAprès son passage à vide du début des années 2010, Virgin Radio revient en force avec son son “Pop - Rock - Electro”.","language":["Français"],"logo100x100":"http://static.radio.fr/images/broadcasts/15/43/8275/1/c100.png","streamUrls":[{"streamUrl":"http://mp3lg4.tdf-cdn.com/9243/lag_164753.mp3","loadbalanced":false,"metaDataAvailable":false,"playingMode":"STEREO","type":"STREAM","sampleRate":44100,"streamContentFormat":"MP3","bitRate":128,"idBroadcast":8275,"sortOrder":0,"streamFormat":"ICECAST","id":47609,"streamStatus":"VALID","contentType":"audio/mpeg"},{"streamUrl":"http://mp3lg3.scdn.arkena.com/10490/virginradio.mp3","loadbalanced":false,"metaDataAvailable":false,"playingMode":"STEREO","type":"STREAM","sampleRate":44100,"streamContentFormat":"MP3","bitRate":64,"idBroadcast":8275,"sortOrder":1,"streamFormat":"ICECAST","id":57003,"streamStatus":"VALID","contentType":"audio/mpeg"}],"playable":"PLAYABLE","genres":["Pop","Rock"],"logo175x175":"http://static.radio.fr/images/broadcasts/15/43/8275/1/c175.png","adParams":{"st_city":["Paris"],"languages":["Français"],"genres":["Pop","Rock"],"topics":[],"st_cont":["Europe"],"station":["virginradio"],"family":["Virgin"],"st_region":[],"type":["radio_station"],"st_country":["France"]},"alias":"Virgin;;Virgin Radio;;103.5;;103,5;Pop Rock Electro","rank":8,"id":8275,"types":["Radio FM"],"website":"http://www.virginradio.fr/","topics":[],"shortDescription":"Virgin Radio propose d'écouter le meilleur des sons “Pop - Rock - Electro”","logo44x44":"http://static.radio.fr/images/broadcasts/15/43/8275/1/c44.png","numberEpisodes":0,"podcastUrls":[],"hideReferer":false,"name":"Virgin Radio Officiel","subdomain":"virginradio","lastModified":"2018-05-10T03:18:17.000Z","family":["Virgin"],"region":"","frequencies":[{"area":"Abbeville","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":2299,"frequency":99.6},{"area":"Agen","broadcastId":8275,"frequencyType":"FM","cityId":4416,"id":2317,"frequency":89.8},{"area":"Ajaccio","broadcastId":8275,"frequencyType":"FM","cityId":165,"id":2370,"frequency":99.8},{"area":"Alençon","broadcastId":8275,"frequencyType":"FM","cityId":2956,"id":2424,"frequency":100.9},{"area":"Allos","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":2465,"frequency":105.4},{"area":"Amiens","broadcastId":8275,"frequencyType":"FM","cityId":185,"id":2502,"frequency":93.6},{"area":"Angers","broadcastId":8275,"frequencyType":"FM","cityId":193,"id":2542,"frequency":94.8},{"area":"Angoulême","broadcastId":8275,"frequencyType":"FM","cityId":1975,"id":2564,"frequency":100.3},{"area":"Annecy","broadcastId":8275,"frequencyType":"FM","cityId":198,"id":2587,"frequency":100.5},{"area":"Annemasse","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":2594,"frequency":90.1},{"area":"Arcachon","broadcastId":8275,"frequencyType":"FM","cityId":5789,"id":2644,"frequency":94.1},{"area":"Argentan","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":2668,"frequency":96.1},{"area":"Arras","broadcastId":8275,"frequencyType":"FM","cityId":2721,"id":2708,"frequency":91.9},{"area":"Aubenas","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":2759,"frequency":106.9},{"area":"Aubusson","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":2783,"frequency":101.8},{"area":"Auch","broadcastId":8275,"frequencyType":"FM","cityId":230,"id":2799,"frequency":100.2},{"area":"Aurillac","broadcastId":8275,"frequencyType":"FM","cityId":237,"id":2845,"frequency":89},{"area":"Autun","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":2861,"frequency":87.6},{"area":"Auxerre","broadcastId":8275,"frequencyType":"FM","cityId":240,"id":2881,"frequency":98.9},{"area":"Avallon","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":2904,"frequency":90.8},{"area":"Avignon","broadcastId":8275,"frequencyType":"FM","cityId":241,"id":2927,"frequency":89},{"area":"Avranches","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":2938,"frequency":89},{"area":"Bar-le-Duc","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3007,"frequency":102},{"area":"Barcelonnette","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3027,"frequency":94},{"area":"Bastia","broadcastId":8275,"frequencyType":"FM","cityId":1962,"id":3066,"frequency":107.2},{"area":"Bayeux","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3078,"frequency":101.7},{"area":"Bayonne","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3095,"frequency":97.7},{"area":"Beauvais","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3129,"frequency":103.5},{"area":"Belfort","broadcastId":8275,"frequencyType":"FM","cityId":303,"id":3163,"frequency":98.4},{"area":"Bellegarde-sur-Valserine","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3186,"frequency":103.1},{"area":"Belley","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3199,"frequency":96.1},{"area":"Bergerac","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3217,"frequency":93.2},{"area":"Besançon","broadcastId":8275,"frequencyType":"FM","cityId":324,"id":3261,"frequency":100.4},{"area":"Béthune","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3276,"frequency":90.1},{"area":"Blois","broadcastId":8275,"frequencyType":"FM","cityId":344,"id":3325,"frequency":97.2},{"area":"Bonnières-sur-Seine","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3358,"frequency":88.8},{"area":"Bordeaux","broadcastId":8275,"frequencyType":"FM","cityId":360,"id":3387,"frequency":94.3},{"area":"Boulogne-sur-Mer","broadcastId":8275,"frequencyType":"FM","cityId":365,"id":3419,"frequency":91.5},{"area":"Bourg-en-Bresse","broadcastId":8275,"frequencyType":"FM","cityId":1991,"id":3442,"frequency":96.3},{"area":"Bourges","broadcastId":8275,"frequencyType":"FM","cityId":366,"id":3475,"frequency":99.6},{"area":"Brest","broadcastId":8275,"frequencyType":"FM","cityId":379,"id":3526,"frequency":96.5},{"area":"Briançon","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3554,"frequency":96},{"area":"Brioude","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3577,"frequency":89.8},{"area":"Brive-la-Gaillarde","broadcastId":8275,"frequencyType":"FM","cityId":1996,"id":3600,"frequency":88.1},{"area":"Caen","broadcastId":8275,"frequencyType":"FM","cityId":413,"id":3628,"frequency":96.8},{"area":"Cahors","broadcastId":8275,"frequencyType":"FM","cityId":10713,"id":3647,"frequency":96.8},{"area":"Calvi","broadcastId":8275,"frequencyType":"FM","cityId":10711,"id":3686,"frequency":106.7},{"area":"Cannes","broadcastId":8275,"frequencyType":"FM","cityId":423,"id":3717,"frequency":88.1},{"area":"Carcassonne","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3753,"frequency":96},{"area":"Carhaix-Plouguer","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3756,"frequency":106.8},{"area":"Carpentras","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3766,"frequency":103.3},{"area":"Castelnaudary","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3789,"frequency":102.3},{"area":"Castres","broadcastId":8275,"frequencyType":"FM","cityId":440,"id":3804,"frequency":102.4},{"area":"Cauterets","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3810,"frequency":94.1},{"area":"Chalon-sur-Saône","broadcastId":8275,"frequencyType":"FM","cityId":8551,"id":3872,"frequency":97.8},{"area":"Châlons-en-Champagne","broadcastId":8275,"frequencyType":"FM","cityId":11051,"id":3893,"frequency":95.5},{"area":"Chamonix","broadcastId":8275,"frequencyType":"FM","cityId":1986,"id":3939,"frequency":98.3},{"area":"Charleville-Mézières","broadcastId":8275,"frequencyType":"FM","cityId":459,"id":3962,"frequency":99.9},{"area":"Charolles","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3969,"frequency":95.1},{"area":"Chartres","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":3987,"frequency":103.3},{"area":"Château-du-Loir","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":4002,"frequency":103.7},{"area":"Château-Thierry","broadcastId":8275,"frequencyType":"FM","cityId":0,"id":4021,"frequency":102.4},{"area":"Châteaubriant","broadcastId":8275,"frequencyType":"FM","cityId":6200,"id":4030,"frequency":88.6},{"area":"…
I want to apply this regex pattern in this code:
Public Function regExInput(myPatern As String, myInput As String) As String
Dim strPattern As String: strPattern = myPatern
Dim strReplace As String: strReplace = ""
Dim regEx As New RegExp
regExInput = myInput
If strPattern <> "" Then
With regEx
.Global = True
.MultiLine = True
.IgnoreCase = False
.Pattern = strPattern
End With
If regEx.Test(regExInput) Then
MsgBox (regEx.Replace(regExInput, strReplace))
Else
MsgBox ("Not matched")
End If
End If
End Function

Answer 1

Here is a regex that should do what you want:
/{\s*["']\s*streamUrl\s*["']\s*:\s*["']\s*(http[^"']+)/
Try it out here:
https://regex101.com/r/sAXaOE/1
The match is in Group 1 (look under match info on the right).
And in VBA it might be something like this:
Dim myRegExp, myMatches, myMatch
Set myRegExp = New RegExp
myRegExp.IgnoreCase = True
myRegExp.Global = True
myRegExp.Pattern = "{\s*[""']\s*streamUrl\s*[""']\s*:\s*[""']\s*(http[^""']+)"
Set myMatches = myRegExp.Execute(SubjectString)
For Each myMatch In myMatches
For I = 1 To myMatch.SubMatches.Count
'backreference text: myMatch.SubMatches(I-1)
Next
Next