Add convert_to_human_readable and tests for both. Resolves #1693.

2 files changed, 46 insertions, 0 deletions

diff --git a/modules/gallery/helpers/MY_num.php b/modules/gallery/helpers/MY_num.php
index 9787044c..842a2ee3 100644
--- a/modules/gallery/helpers/MY_num.php
+++ b/modules/gallery/helpers/MY_num.php
@@ -37,4 +37,18 @@ class num extends num_Core {
 
     return $val;
   }
+
+  /**
+   * Convert a size value as accepted by PHP's shorthand to bytes.
+   * ref: http://us2.php.net/manual/en/function.ini-get.php
+   * ref: http://us2.php.net/manual/en/faq.using.php#faq.using.shorthandbytes
+   */
+  static function convert_to_human_readable($num) {
+    foreach (array("G" => 1e9, "M" => 1e6, "K" => 1e3) as $k => $v) {
+      if ($num > $v) {
+        $num = round($num / $v) . $k;
+      }
+    }
+    return $num;
+  }
 }
diff --git a/modules/gallery/tests/Num_Helper_Test.php b/modules/gallery/tests/Num_Helper_Test.php
new file mode 100644
index 00000000..a22f9359
--- /dev/null
+++ b/modules/gallery/tests/Num_Helper_Test.php
@@ -0,0 +1,32 @@
+<?php defined("SYSPATH") or die("No direct script access.");
+/**
+ * Gallery - a web based photo album viewer and editor
+ * Copyright (C) 2000-2011 Bharat Mediratta
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+class Num_Helper_Test extends Gallery_Unit_Test_Case {
+  public function convert_to_bytes_test() {
+    $this->assert_equal(5 * 1024, num::convert_to_bytes("5K"));
+    $this->assert_equal(3 * 1024*1024, num::convert_to_bytes("3M"));
+    $this->assert_equal(4 * 1024*1024*1024, num::convert_to_bytes("4G"));
+  }
+
+  public function convert_to_human_readable_test() {
+    $this->assert_equal("6K", num::convert_to_human_readable(5615));
+    $this->assert_equal("1M", num::convert_to_human_readable(1205615));
+    $this->assert_equal("3G", num::convert_to_human_readable(3091205615));
+  }
+}
\ No newline at end of file