Revert PR 7158 since it breaks umlauts

[friendica.git] / src / Util / Strings.php

diff --git a/src/Util/Strings.php b/src/Util/Strings.php
index 55751d8d8274a901fca6a76b75171a89e886a1e7..b2b710d96f2c59ca86e9a545bb342b88849868d7 100644 (file)
--- a/src/Util/Strings.php
+++ b/src/Util/Strings.php
@@ -346,4 +346,49 @@ class Strings
 
                return $return;
        }
+
+       /**
+        * Returns the regular expression string to match URLs in a given text
+        *
+        * @return string
+        * @see https://daringfireball.net/2010/07/improved_regex_for_matching_urls
+        */
+       public static function autoLinkRegEx()
+       {
+               return '@(?xi)
+(?<![=\'\]"/])          # 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`!()\[\]{};:\'".,<>?«»“”‘’]+/? # Followed by a slash
+  )
+  (?:                                  # One or more:
+    [^\s()<>]+                         # Run of non-space, non-()<>
+    |                                  #   or
+    \(([^\s()<>]+|(\([^\s()<>]+\)))*\) # balanced parens, up to 2 levels
+    |                                  #   or
+    [^\s`!()\[\]{};:\'".,<>?«»“”‘’]    # not a space or one of these punct chars
+  )*
+)@';
+       }
+
+       /**
+        * Ensures a single path item doesn't contain any path-traversing characters
+        *
+        * @see https://stackoverflow.com/a/46097713
+        * @param string $pathItem
+        * @return string
+        */
+       public static function sanitizeFilePathItem($pathItem)
+       {
+               $pathItem = str_replace('/', '_', $pathItem);
+               $pathItem = str_replace('\\', '_', $pathItem);
+               $pathItem = str_replace(DIRECTORY_SEPARATOR, '_', $pathItem); // In case it does not equal the standard values
+
+               return $pathItem;
+       }
 }