Added fix_vars.php script.

misc/fix_vars.php

@@ -0,0 +1,61 @@
+<?php
+
+/*
+ * This script will convert Smarty variable references from the old format to
+ * the new one. For example, what used to look like $section1/foo.bar will now
+ * be $foo[section1].bar. This allows for more readable syntax and also allows
+ * referencing deeply nested structures of arbitrary complexity.
+ */
+
+if ($argc < 2) {
+	die("\nUsage: php -q fix_vars.php <templates>\n\n");
+}
+
+$qstr_regexp = '"[^"\\\\]*(?:\\\\.[^"\\\\]*)*"|\'[^\'\\\\]*(?:\\\\.[^\'\\\\]*)*\'';
+$pwd = $HTTP_ENV_VARS['PWD'];
+
+foreach (array_slice($argv, 1) as $template) {
+	$template = $pwd . '/' . $template;
+    if (!is_file($template)) continue;
+
+	$input = implode('', file($template));
+	$fp = fopen($template.'.out', 'w');
+	if (!$fp) {
+		die("\nError: could not open $template.out for writing\n\n");
+	}
+
+	if (strnatcmp(PHP_VERSION, '4.0.5') > 0)
+		$output = preg_replace_callback('!\$(\w+(\.\w+)?/)*\w+(?>\.\w+)*(?>\|@?\w+(:(?>' .  $qstr_regexp . '|[^|]+))*)*!', 'fix_var', $input);
+	else
+		$output = preg_replace('!\$(\w+(\.\w+)?/)*\w+(?>\.\w+)*(?>\|@?\w+(:(?>' .  $qstr_regexp . '|[^|]+))*)*!F', 'fix_var', $input);
+
+	fwrite($fp, $output);
+	fclose($fp);
+	copy($template.'.out', $template);
+	unlink($template.'.out');
+
+	print "Fixed $template.\n";
+}
+
+function fix_var($match)
+{
+	$var_expr = $match[0];
+
+	list($var_ref, $modifiers) = explode('|', substr($var_expr, 1), 2);
+
+	$sections = explode('/', $var_ref);
+	$props = explode('.', array_pop($sections));
+	$var_name = array_shift($props);
+
+	$output = "\$$var_name";
+
+	foreach ($sections as $section_ref) {
+		$output .= "[$section_ref]";
+	}
+	if (count($props))
+		$output .= ".".implode('.', $props);
+
+	return $output;
+}
+
+?>