first commit

wp-content/plugins/mailchimp-for-wp/includes/admin/class-upgrade-routines.php

@@ -0,0 +1,85 @@
+<?php
+
+/**
+ * Class MC4WP_DB_Upgrader
+ *
+ * This class takes care of loading migration files from the specified migrations directory.
+ * Migration files should only use default WP functions and NOT use code which might not be there in the future.
+ *
+ * @ignore
+ */
+class MC4WP_Upgrade_Routines
+{
+    /**
+     * @var float
+     */
+    protected $version_from = 0;
+
+    /**
+     * @var float
+     */
+    protected $version_to = 0;
+
+    /**
+     * @var string
+     */
+    protected $migrations_dir = '';
+
+    /**
+     * @param float $from
+     * @param float $to
+     */
+    public function __construct($from, $to, $migrations_dir)
+    {
+        $this->version_from   = $from;
+        $this->version_to     = $to;
+        $this->migrations_dir = $migrations_dir;
+    }
+
+    /**
+     * Run the various upgrade routines, all the way up to the latest version
+     */
+    public function run()
+    {
+        $migrations = $this->find_migrations();
+
+        // run in sub-function for scope
+        array_map(array( $this, 'run_migration' ), $migrations);
+    }
+
+    /**
+     * @return array
+     */
+    public function find_migrations()
+    {
+        $files      = glob(rtrim($this->migrations_dir, '/') . '/*.php');
+        $migrations = array();
+
+        // return empty array when glob returns non-array value.
+        if (! is_array($files)) {
+            return $migrations;
+        }
+
+        foreach ($files as $file) {
+            $migration = basename($file);
+            $parts     = explode('-', $migration);
+            $version   = $parts[0];
+
+            if (version_compare($this->version_from, $version, '<')) {
+                $migrations[] = $file;
+            }
+        }
+
+        return $migrations;
+    }
+
+    /**
+     * Include a migration file and runs it.
+     *
+     * @param string $file
+     */
+    protected function run_migration($file)
+    {
+        include $file;
+    }
+}