From a10063ff68cf5988297dcad889384ab2080c3850 Mon Sep 17 00:00:00 2001
From: Andy Staudacher <andy.st@gmail.com>
Date: Sat, 29 Aug 2009 12:34:09 -0700
Subject: Add more factory methods for convenience: SafeString::purify() and
 SafeString::of_safe_html().

Removing SafeString::mark_html_safe() since it's no longer needed.
---
 modules/gallery/libraries/SafeString.php | 27 +++++++++++++++++++++------
 1 file changed, 21 insertions(+), 6 deletions(-)

(limited to 'modules/gallery/libraries/SafeString.php')

diff --git a/modules/gallery/libraries/SafeString.php b/modules/gallery/libraries/SafeString.php
index 709ab5f6..9a269ed4 100644
--- a/modules/gallery/libraries/SafeString.php
+++ b/modules/gallery/libraries/SafeString.php
@@ -24,6 +24,7 @@
 class SafeString_Core {
   private $_raw_string;
   protected $_is_safe_html = false;
+  protected $_is_purified_html = false;
 
   private static $_purifier = null;
 
@@ -44,11 +45,25 @@ class SafeString_Core {
   }
 
   /**
-   * Marks this string as safe to be used in HTML without any escaping.
+   * Factory method returning a new SafeString instance after HTML purifying
+   * the given string.
    */
-  function mark_html_safe() {
-    $this->_is_safe_html = true;
-    return $this;
+  static function purify($string) {
+    if ($string instanceof SafeString) {
+      $string = $string->unescaped();
+    }
+    $safe_string = self::of_safe_html(self::_purify_for_html($string));
+    $safe_string->_is_purified_html = true;
+    return $safe_string;
+  }
+
+  /**
+   * Factory method returning a new SafeString instance which won't HTML escape.
+   */
+  static function of_safe_html($string) {
+    $safe_string = new SafeString($string);
+    $safe_string->_is_safe_html = true;
+    return $safe_string;
   }
 
   /**
@@ -117,10 +132,10 @@ class SafeString_Core {
    * @return the string escaped for use in HTML.
    */
   function purified_html() {
-    if ($this->_is_safe_html) {
+    if ($this->_is_purified_html) {
       return $this;
     } else {
-      return SafeString::of(self::_purify_for_html($this->_raw_string), true);
+      return self::purify($this);
     }
   }
 
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