Helpers refactoring

app/Helper/Text.php

@@ -0,0 +1,91 @@
+<?php
+
+namespace Helper;
+
+use Core\Markdown;
+
+/**
+ * Text helpers
+ *
+ * @package helper
+ * @author  Frederic Guillot
+ */
+class Text extends \Core\Base
+{
+    /**
+     * Markdown transformation
+     *
+     * @param  string    $text     Markdown content
+     * @param  array     $link     Link parameters for replacement
+     * @return string
+     */
+    public function markdown($text, array $link = array())
+    {
+        $parser = new Markdown($link, $this->helper->url);
+        $parser->setMarkupEscaped(MARKDOWN_ESCAPE_HTML);
+        return $parser->text($text);
+    }
+
+    /**
+     * Format a file size
+     *
+     * @param  integer  $size        Size in bytes
+     * @param  integer  $precision   Precision
+     * @return string
+     */
+    public function bytes($size, $precision = 2)
+    {
+        $base = log($size) / log(1024);
+        $suffixes = array('', 'k', 'M', 'G', 'T');
+
+        return round(pow(1024, $base - floor($base)), $precision).$suffixes[(int)floor($base)];
+    }
+
+    /**
+     * Truncate a long text
+     *
+     * @param  string    $value         Text
+     * @param  integer   $max_length    Max Length
+     * @param  string    $end           Text end
+     * @return string
+     */
+    public function truncate($value, $max_length = 85, $end = '[...]')
+    {
+        $length = strlen($value);
+
+        if ($length > $max_length) {
+            return substr($value, 0, $max_length).' '.$end;
+        }
+
+        return $value;
+    }
+
+    /**
+     * Return true if needle is contained in the haystack
+     *
+     * @param  string   $haystack   Haystack
+     * @param  string   $needle     Needle
+     * @return boolean
+     */
+    public function contains($haystack, $needle)
+    {
+        return strpos($haystack, $needle) !== false;
+    }
+
+    /**
+     * Return a value from a dictionary
+     *
+     * @param  mixed   $id              Key
+     * @param  array   $listing         Dictionary
+     * @param  string  $default_value   Value displayed when the key doesn't exists
+     * @return string
+     */
+    public function in($id, array $listing, $default_value = '?')
+    {
+        if (isset($listing[$id])) {
+            return $this->helper->e($listing[$id]);
+        }
+
+        return $default_value;
+    }
+}