--- /dev/null
+<?php
+
+/*
+ * This file is part of Psy Shell.
+ *
+ * (c) 2012-2017 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Global Variable Enumerator class.
+ */
+class GlobalVariableEnumerator extends Enumerator
+{
+ /**
+ * {@inheritdoc}
+ */
+ protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+ {
+ // only list globals when no Reflector is present.
+ if ($reflector !== null || $target !== null) {
+ return;
+ }
+
+ // only list globals if we are specifically asked
+ if (!$input->getOption('globals')) {
+ return;
+ }
+
+ $globals = $this->prepareGlobals($this->getGlobals());
+
+ if (empty($globals)) {
+ return;
+ }
+
+ return array(
+ 'Global Variables' => $globals,
+ );
+ }
+
+ /**
+ * Get defined global variables.
+ *
+ * @return array
+ */
+ protected function getGlobals()
+ {
+ global $GLOBALS;
+
+ $names = array_keys($GLOBALS);
+ natcasesort($names);
+
+ $ret = array();
+ foreach ($names as $name) {
+ $ret[$name] = $GLOBALS[$name];
+ }
+
+ return $ret;
+ }
+
+ /**
+ * Prepare formatted global variable array.
+ *
+ * @param array $globals
+ *
+ * @return array
+ */
+ protected function prepareGlobals($globals)
+ {
+ // My kingdom for a generator.
+ $ret = array();
+
+ foreach ($globals as $name => $value) {
+ if ($this->showItem($name)) {
+ $fname = '$' . $name;
+ $ret[$fname] = array(
+ 'name' => $fname,
+ 'style' => self::IS_GLOBAL,
+ 'value' => $this->presentRef($value),
+ );
+ }
+ }
+
+ return $ret;
+ }
+}