Update NSString+URLsFromString.m

NSString+URLsFromString.m

@@ -0,0 +1,55 @@
+//
+//  NSString+URLsFromString.m
+// 
+//
+//  Created by midnightchips on 12/24/18.
+//  
+//
+
+@implementation NSString (URLsFromString)
+
++ (NSArray <NSURL*> *)URLsFromString:(NSString *)string {
+    NSMutableArray<NSURL *> *URLs = [NSMutableArray new];
+
+    if (string.length) {
+
+        NSString *pattern = @"https?://([-\\w\\.]+)+(:\\d+)?(/([\\w/_\\.]*(\\?\\S+)?)?)?";
+        NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:pattern options:NSRegularExpressionCaseInsensitive error:nil];
+        NSArray *matches = [regex matchesInString:string options:0 range:NSMakeRange(0, [string length])];
+
+        for (NSTextCheckingResult *match in matches) {
+            NSString* substring = [string substringWithRange:match.range];
+
+            NSURL *candidateURL = [NSURL URLWithString:substring];
+            if (candidateURL && candidateURL.scheme && candidateURL.host) {
+                [URLs addObject:candidateURL];
+            }
+        }
+    }
+
+    return URLs;
+}
+
+- (NSArray <NSURL*> *)URLs {
+    NSMutableArray<NSURL *> *URLs = [NSMutableArray new];
+
+    if (self.length) {
+
+        NSString *pattern = @"https?://([-\\w\\.]+)+(:\\d+)?(/([\\w/_\\.]*(\\?\\S+)?)?)?";
+        NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:pattern options:NSRegularExpressionCaseInsensitive error:nil];
+        NSArray *matches = [regex matchesInString:self options:0 range:NSMakeRange(0, [self length])];
+
+        for (NSTextCheckingResult *match in matches) {
+            NSString* substring = [self substringWithRange:match.range];
+
+            NSURL *candidateURL = [NSURL URLWithString:substring];
+            if (candidateURL && candidateURL.scheme && candidateURL.host) {
+                [URLs addObject:candidateURL];
+            }
+        }
+    }
+
+    return URLs;
+}
+
+@end