From e8ae23983b8bda0ef4c53ebaf24ae09a5ee4f10c Mon Sep 17 00:00:00 2001
From: "k.triantafyllou" <k.triantafyllou@d315682c-612b-4755-9ff5-7f18f6832af3>
Date: Wed, 16 Dec 2020 17:02:58 +0000
Subject: [PATCH] [Library | Trunk]: String utils: Add url validator

git-svn-id: https://svn.driver.research-infrastructures.eu/driver/dnet40/modules/uoa-services-library/trunk/ng-openaire-library/src/app@60157 d315682c-612b-4755-9ff5-7f18f6832af3
---
 utils/string-utils.class.ts | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/utils/string-utils.class.ts b/utils/string-utils.class.ts
index e8b135ff..04a1a77b 100644
--- a/utils/string-utils.class.ts
+++ b/utils/string-utils.class.ts
@@ -1,4 +1,5 @@
 import {UrlSegment} from '@angular/router';
+import {ValidatorFn, Validators} from "@angular/forms";
 
 export class Dates {
   public static yearMin = 1800;
@@ -215,6 +216,12 @@ export class StringUtils {
     return !!email.match("^[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}$");
   }
   
+  public static urlValidator(): ValidatorFn {
+    return  Validators.pattern('https?:\/\/(?:www\.|(?!www))[a-zA-Z0-9][a-zA-Z0-9-]+[a-zA-Z0-9]\.[^\s]{2,}|www\.' +
+      '[a-zA-Z0-9][a-zA-Z0-9-]+[a-zA-Z0-9]\.[^\s]{2,}|https?:\/\/(?:www\.|(?!www))[a-zA-Z0-9]+\.[^\s]{2,}|www\.' +
+      '[a-zA-Z0-9]+\.[^\s]{2,}');
+  }
+  
   public static sliceString(mystr, size: number): string {
     const sliced = String(mystr).substr(0, size);
     return sliced + (String(mystr).length > size ? '...' : '');