From f23d9bf2e0886498a3d9d5bb0a800d663b795e61 Mon Sep 17 00:00:00 2001
From: javiexin <javiexin@gmail.com>
Date: Sun, 5 Feb 2017 21:47:31 +0100
Subject: [ticket/15068] Add template vars retrieval from the template object

PHPBB3-15068
---
 phpBB/phpbb/template/context.php | 57 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

(limited to 'phpBB/phpbb/template/context.php')

diff --git a/phpBB/phpbb/template/context.php b/phpBB/phpbb/template/context.php
index 4ee48205c8..0e5f3287aa 100644
--- a/phpBB/phpbb/template/context.php
+++ b/phpBB/phpbb/template/context.php
@@ -86,6 +86,17 @@ class context
 		return true;
 	}
 
+	/**
+	* Retreive a single scalar value from a single key.
+	*
+	* @param string $varname Variable name
+	* @return mixed Variable value, or null if not set
+	*/
+	public function retrieve_var($varname)
+	{
+		return isset($this->rootref[$varname]) ? $this->rootref[$varname] : null;
+	}
+
 	/**
 	* Returns a reference to template data array.
 	*
@@ -263,6 +274,52 @@ class context
 		return true;
 	}
 
+	/**
+	* Retrieve key variable pairs from the specified block
+	*
+	* @param string $blockname Name of block to retrieve $vararray from
+	* @param array $vararray An array of variable names
+	* @return array of hashes with variable name as key and retrieved value or null as value
+	*/
+	public function retrieve_block_vars($blockname, array $vararray)
+	{
+		// For nested block, $blockcount > 0, for top-level block, $blockcount == 0
+		$blocks = explode('.', $blockname);
+		$blockcount = sizeof($blocks) - 1;
+
+		$block = $this->tpldata;
+		for ($i = 0; $i <= $blockcount; $i++)
+		{
+			if (($pos = strpos($blocks[$i], '[')) !== false)
+			{
+				$name = substr($blocks[$i], 0, $pos);
+
+				if (strpos($blocks[$i], '[]') === $pos)
+				{
+					$index = sizeof($block[$name]) - 1;
+				}
+				else
+				{
+					$index = min((int) substr($blocks[$i], $pos + 1, -1), sizeof($block[$name]) - 1);
+				}
+			}
+			else
+			{
+				$name = $blocks[$i];
+				$index = sizeof($block[$name]) - 1;
+			}
+			$block = $block[$name];
+			$block = $block[$index];
+		}
+
+		$result = array();
+		foreach ($vararray as $varname)
+		{
+			$result[$varname] = isset($block[$varname]) ? $block[$varname] : null;
+		}
+		return $result;
+	}
+
 	/**
 	* Change already assigned key variable pair (one-dimensional - single loop entry)
 	*
-- 
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