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-rw-r--r--library/Smarty/libs/plugins/shared.literal_compiler_param.php33
1 files changed, 33 insertions, 0 deletions
diff --git a/library/Smarty/libs/plugins/shared.literal_compiler_param.php b/library/Smarty/libs/plugins/shared.literal_compiler_param.php
new file mode 100644
index 000000000..dbcd9374c
--- /dev/null
+++ b/library/Smarty/libs/plugins/shared.literal_compiler_param.php
@@ -0,0 +1,33 @@
+<?php
+/**
+ * Smarty plugin
+ *
+ * @package Smarty
+ * @subpackage PluginsShared
+ */
+
+/**
+ * evaluate compiler parameter
+ *
+ * @param array $params parameter array as given to the compiler function
+ * @param integer $index array index of the parameter to convert
+ * @param mixed $default value to be returned if the parameter is not present
+ * @return mixed evaluated value of parameter or $default
+ * @throws SmartyException if parameter is not a literal (but an expression, variable, …)
+ * @author Rodney Rehm
+ */
+function smarty_literal_compiler_param($params, $index, $default=null)
+{
+ // not set, go default
+ if (!isset($params[$index])) {
+ return $default;
+ }
+ // test if param is a literal
+ if (!preg_match('/^([\'"]?)[a-zA-Z0-9]+(\\1)$/', $params[$index])) {
+ throw new SmartyException('$param[' . $index . '] is not a literal and is thus not evaluatable at compile time');
+ }
+
+ $t = null;
+ eval("\$t = " . $params[$index] . ";");
+ return $t;
+}