Predis to v2.2.2

plugins/cache-redis/Predis/Command/Redis/INFO.php

@@ -0,0 +1,157 @@
+<?php
+
+/*
+ * This file is part of the Predis package.
+ *
+ * (c) 2009-2020 Daniele Alessandri
+ * (c) 2021-2023 Till Krüss
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Predis\Command\Redis;
+
+use Predis\Command\Command as RedisCommand;
+
+/**
+ * @see http://redis.io/commands/info
+ */
+class INFO extends RedisCommand
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function getId()
+    {
+        return 'INFO';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function parseResponse($data)
+    {
+        if (empty($data) || !$lines = preg_split('/\r?\n/', $data)) {
+            return [];
+        }
+
+        if (strpos($lines[0], '#') === 0) {
+            return $this->parseNewResponseFormat($lines);
+        } else {
+            return $this->parseOldResponseFormat($lines);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function parseNewResponseFormat($lines)
+    {
+        $info = [];
+        $current = null;
+
+        foreach ($lines as $row) {
+            if ($row === '') {
+                continue;
+            }
+
+            if (preg_match('/^# (\w+)$/', $row, $matches)) {
+                $info[$matches[1]] = [];
+                $current = &$info[$matches[1]];
+                continue;
+            }
+
+            [$k, $v] = $this->parseRow($row);
+            $current[$k] = $v;
+        }
+
+        return $info;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function parseOldResponseFormat($lines)
+    {
+        $info = [];
+
+        foreach ($lines as $row) {
+            if (strpos($row, ':') === false) {
+                continue;
+            }
+
+            [$k, $v] = $this->parseRow($row);
+            $info[$k] = $v;
+        }
+
+        return $info;
+    }
+
+    /**
+     * Parses a single row of the response and returns the key-value pair.
+     *
+     * @param string $row Single row of the response.
+     *
+     * @return array
+     */
+    protected function parseRow($row)
+    {
+        if (preg_match('/^module:name/', $row)) {
+            return $this->parseModuleRow($row);
+        }
+
+        [$k, $v] = explode(':', $row, 2);
+
+        if (preg_match('/^db\d+$/', $k)) {
+            $v = $this->parseDatabaseStats($v);
+        }
+
+        return [$k, $v];
+    }
+
+    /**
+     * Extracts the statistics of each logical DB from the string buffer.
+     *
+     * @param string $str Response buffer.
+     *
+     * @return array
+     */
+    protected function parseDatabaseStats($str)
+    {
+        $db = [];
+
+        foreach (explode(',', $str) as $dbvar) {
+            [$dbvk, $dbvv] = explode('=', $dbvar);
+            $db[trim($dbvk)] = $dbvv;
+        }
+
+        return $db;
+    }
+
+    /**
+     * Parsing module rows because of different format.
+     *
+     * @param  string $row
+     * @return array
+     */
+    protected function parseModuleRow(string $row): array
+    {
+        [$moduleKeyword, $moduleData] = explode(':', $row);
+        $explodedData = explode(',', $moduleData);
+        $parsedData = [];
+
+        foreach ($explodedData as $moduleDataRow) {
+            [$k, $v] = explode('=', $moduleDataRow);
+
+            if ($k === 'name') {
+                $parsedData[0] = $v;
+                continue;
+            }
+
+            $parsedData[1][$k] = $v;
+        }
+
+        return $parsedData;
+    }
+}