String::tail()

lib/Cake/Test/Case/Utility/StringTest.php

@@ -443,6 +443,46 @@ public function testTruncate() {
 		$this->assertEquals($expected, $result);
 	}
 
+/**
+ * testTail method
+ *
+ * @return void
+ */
+	public function testTail() {
+		$text1 = 'The quick brown fox jumps over the lazy dog';
+		$text2 = 'Heizölrückstoßabdämpfung';
+		$text3 = 'El moño está en el lugar correcto. Eso fue lo que dijo la niña, ¿habrá dicho la verdad?';
+		$text4 = 'Vive la R' . chr(195) . chr(169) . 'publique de France';
+		$text5 = 'НОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыь';
+
+		$result = $this->Text->tail($text1, 13);
+		$this->assertEquals('...e lazy dog', $result);
+
+		$result = $this->Text->tail($text1, 13, array('exact' => false));
+		$this->assertEquals('...lazy dog', $result);
+
+		$result = $this->Text->tail($text1, 100);
+		$this->assertEquals('The quick brown fox jumps over the lazy dog', $result);
+
+		$result = $this->Text->tail($text2, 10);
+		$this->assertEquals('...;mpfung', $result);
+
+		$result = $this->Text->tail($text2, 10, array('exact' => false));
+		$this->assertEquals('...', $result);
+
+		$result = $this->Text->tail($text3, 255);
+		$this->assertEquals($text3, $result);
+
+		$result = $this->Text->tail($text3, 21);
+		$this->assertEquals('...á dicho la verdad?', $result);
+
+		$result = $this->Text->tail($text4, 25);
+		$this->assertEquals('...a R' . chr(195) . chr(169) . 'publique de France', $result);
+
+		$result = $this->Text->tail($text5, 10);
+		$this->assertEquals('...цчшщъыь', $result);
+	}
+
 /**
  * testHighlight method
  *

lib/Cake/Utility/String.php

@@ -418,6 +418,46 @@ public static function stripLinks($text) {
 		return preg_replace('|<a\s+[^>]+>|im', '', preg_replace('|<\/a>|im', '', $text));
 	}
 
+/**
+ * Truncates text starting from the end.
+ *
+ * Cuts a string to the length of $length and replaces the first characters
+ * with the beginning if the text is longer than length.
+ *
+ * ### Options:
+ *
+ * - `beginning` Will be used as Beginning and prepended to the trimmed string
+ * - `exact` If false, $text will not be cut mid-word
+ *
+ * @param string $text String to truncate.
+ * @param integer $length Length of returned string, including ellipsis.
+ * @param array $options An array of html attributes and options.
+ * @return string Trimmed string.
+ */
+	public static function tail($text, $length = 100, $options = array()) {
+		$default = array(
+			'beginning' => '...', 'exact' => true
+		);
+		$options = array_merge($default, $options);
+		extract($options);
+
+		if (!function_exists('mb_strlen')) {
+			class_exists('Multibyte');
+		}
+
+		if (mb_strlen($text) <= $length) {
+			return $text;
+		} else {
+			$truncate = mb_substr($text, mb_strlen($text) - $length + mb_strlen($beginning));
+		}
+		if (!$exact) {
+			$spacepos = mb_strpos($truncate, ' ');
+			$truncate = $spacepos === false ? '' : trim(mb_substr($truncate, $spacepos));
+		}
+
+		return $beginning . $truncate;
+	}
+
 /**
  * Truncates text.
  *