Added new Backup CLI command

bin/grav

@@ -19,6 +19,7 @@ $app->addCommands(array(
     new Grav\Console\SetupCommand(),
     new Grav\Console\CleanCommand(),
     new Grav\Console\ClearCacheCommand(),
+    new Grav\Console\BackupCommand(),
     new Grav\Console\NewProjectCommand(),
 ));
 $app->run();

system/src/Grav/Console/BackupCommand.php

@@ -0,0 +1,88 @@
+<?php
+namespace Grav\Console;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Formatter\OutputFormatterStyle;
+use Symfony\Component\Console\Helper\ProgressBar;
+use \Symfony\Component\Yaml\Yaml;
+
+class BackupCommand extends Command {
+
+    protected $source;
+    protected $progress;
+
+    protected function configure() {
+        $this
+        ->setName("backup")
+        ->addArgument(
+            'destination',
+            InputArgument::OPTIONAL,
+            'Where to store the backup'
+
+        )
+        ->setDescription("Creates a backup of the Grav instance")
+        ->setHelp('The <info>backup</info> creates a zipped backup');
+
+
+        $this->source = getcwd();
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+            $output->getFormatter()->setStyle('red', new OutputFormatterStyle('red'));
+            $output->getFormatter()->setStyle('cyan', new OutputFormatterStyle('cyan'));
+            $output->getFormatter()->setStyle('green', new OutputFormatterStyle('green'));
+            $output->getFormatter()->setStyle('magenta', new OutputFormatterStyle('magenta'));
+
+            $this->progress = new ProgressBar($output);
+            $this->progress->setFormat('Archiving <cyan>%current%</cyan> files [<green>%bar%</green>] %elapsed:6s% %memory:6s%');
+
+            $name        = basename($this->source);
+            $dir         = dirname($this->source);
+            $date        = date('YmdHis', time());
+            $filename    = $name . '-' . $date . '.zip';
+
+            $destination = ($input->getArgument('destination')) ? $input->getArgument('destination') : ROOT_DIR;
+            $destination = rtrim($destination, DS) . DS . $filename;
+
+            $output->writeln('');
+            $output->writeln('Creating new Backup "'.$destination.'"');
+            $this->progress->start();
+
+            $zip = new \ZipArchive();
+            $zip->open($destination, \ZipArchive::CREATE);
+            $zip->addEmptyDir($name);
+
+            $this->folderToZip($this->source, $zip, strlen($dir.DS), $this->progress);
+            $zip->close();
+            $this->progress->finish();
+            $output->writeln('');
+            $output->writeln('');
+
+    }
+
+    private static function folderToZip($folder, &$zipFile, $exclusiveLength, $progress) {
+        $handle = opendir($folder);
+        while (false !== $f = readdir($handle)) {
+            if ($f != '.' && $f != '..') {
+                $filePath = "$folder/$f";
+                // Remove prefix from file path before add to zip.
+                $localPath = substr($filePath, $exclusiveLength);
+                if (is_file($filePath)) {
+                    $zipFile->addFile($filePath, $localPath);
+                    $progress->advance();
+                } elseif (is_dir($filePath)) {
+                    // Add sub-directory.
+                    $zipFile->addEmptyDir($localPath);
+                    self::folderToZip($filePath, $zipFile, $exclusiveLength, $progress);
+                }
+            }
+        }
+        closedir($handle);
+    }
+}
+