X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FUtil%2FStrings.php;h=88dd1d39f81edd151151dac1ba6b7449528dd871;hb=a61ce4fed0eba0c1cee3b96e81be6fa89e96c9f9;hp=b2b710d96f2c59ca86e9a545bb342b88849868d7;hpb=9f49ce885785d7b33102f83b76285cbb91a298ee;p=friendica.git

diff --git a/src/Util/Strings.php b/src/Util/Strings.php
index b2b710d96f..88dd1d39f8 100644
--- a/src/Util/Strings.php
+++ b/src/Util/Strings.php
@@ -31,6 +31,18 @@ class Strings
         return $return;
     }
 
+	/**
+	 * Checks, if the given string is a valid hexadecimal code
+	 *
+	 * @param string $hexCode
+	 *
+	 * @return bool
+	 */
+    public static function isHex($hexCode)
+    {
+	    return !empty($hexCode) ? @preg_match("/^[a-f0-9]{2,}$/i", $hexCode) && !(strlen($hexCode) & 1) : false;
+    }
+
     /**
      * @brief This is our primary input filter.
      *
@@ -355,25 +367,25 @@ class Strings
 	 */
 	public static function autoLinkRegEx()
 	{
-		return '@(?xi)
+		return '@
 (?<![=\'\]"/])          # Not preceded by [, =, \', ], ", /
 \b
 (                              # Capture 1: entire matched URL
   https?://                            # http or https protocol
   (?:
-    [^/\s`!()\[\]{};:\'",<>?«»“”‘’.]    # Domain can\'t start with a . 
-    [^/\s`!()\[\]{};:\'",<>?«»“”‘’]+    # Domain can\'t end with a .
+    [^/\s\xA0`!()\[\]{};:\'",<>?«»“”‘’.]    # Domain can\'t start with a . 
+    [^/\s\xA0`!()\[\]{};:\'",<>?«»“”‘’]+    # Domain can\'t end with a .
     \.
-    [^/\s`!()\[\]{};:\'".,<>?«»“”‘’]+/? # Followed by a slash
+    [^/\s\xA0`!()\[\]{};:\'".,<>?«»“”‘’]+/? # Followed by a slash
   )
   (?:                                  # One or more:
-    [^\s()<>]+                         # Run of non-space, non-()<>
+    [^\s\xA0()<>]+                         # Run of non-space, non-()<>
     |                                  #   or
-    \(([^\s()<>]+|(\([^\s()<>]+\)))*\) # balanced parens, up to 2 levels
+    \(([^\s\xA0()<>]+|(\([^\s()<>]+\)))*\) # balanced parens, up to 2 levels
     |                                  #   or
-    [^\s`!()\[\]{};:\'".,<>?«»“”‘’]    # not a space or one of these punct chars
+    [^\s\xA0`!()\[\]{};:\'".,<>?«»“”‘’]    # not a space or one of these punct chars
   )*
-)@';
+)@xiu';
 	}
 
 	/**