Added Zend\Stdlib\StringUtils::hasPcreUnicodeSupport()

zendframework · Jan 19, 2013 · 4913c64 · 4913c64
1 parent fe7cfad
commit 4913c64
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Showing 2 changed files with 33 additions and 0 deletions.
diff --git a/library/Zend/Stdlib/StringUtils.php b/library/Zend/Stdlib/StringUtils.php
@@ -10,6 +10,7 @@
 
 namespace Zend\Stdlib;
 
+use Zend\Stdlib\ErrorHandler;
 use Zend\Stdlib\StringWrapper\StringWrapperInterface;
 
 /**
@@ -45,6 +46,13 @@ abstract class StringUtils
         // TODO
     );
 
+    /**
+     * Is PCRE compiled with Unicode support?
+     *
+     * @var bool
+     **/
+    protected static $hasPcreUnicodeSupport = null;
+
     /**
      * Get registered wrapper classes
      *
@@ -167,4 +175,19 @@ public static function isValidUtf8($str)
     {
         return is_string($str) && ($str === '' || preg_match('/^./su', $str) == 1);
     }
+
+    /**
+     * Is PCRE compiled with Unicode support?
+     *
+     * @return bool
+     */
+    public static function hasPcreUnicodeSupport()
+    {
+        if (static::$hasPcreUnicodeSupport === null) {
+            ErrorHandler::start();
+            static::$hasPcreUnicodeSupport = defined('PREG_BAD_UTF8_OFFSET_ERROR') && preg_match('/\pL/u', 'a') == 1;
+            ErrorHandler::stop();
+        }
+        return static::$hasPcreUnicodeSupport;
+    }
 }
diff --git a/tests/ZendTest/Stdlib/StringUtilsTest.php b/tests/ZendTest/Stdlib/StringUtilsTest.php
@@ -11,6 +11,7 @@
 namespace ZendTest\Stdlib;
 
 use PHPUnit_Framework_TestCase as TestCase;
+use Zend\Stdlib\ErrorHandler;
 use Zend\Stdlib\StringUtils;
 
 class StringUtilsTest extends TestCase
@@ -147,4 +148,13 @@ public function testIsValidUtf8($str, $valid)
     {
         $this->assertSame($valid, StringUtils::isValidUtf8($str));
     }
+
+    public function testHasPcreUnicodeSupport()
+    {
+        ErrorHandler::start();
+        $expected = defined('PREG_BAD_UTF8_OFFSET_ERROR') && preg_match('/\pL/u', 'a') == 1;
+        ErrorHandler::stop();
+
+        $this->assertSame($expected, StringUtils::hasPcreUnicodeSupport());
+    }
 }