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<?php |
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/** |
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* This file is part of graze/data-file |
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* |
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* Copyright (c) 2016 Nature Delivered Ltd. <https://www.graze.com> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* |
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* @license https://github.com/graze/data-file/blob/master/LICENSE.md |
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* @link https://github.com/graze/data-file |
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*/ |
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namespace Graze\DataFile\Modify\Contract; |
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use DirectoryIterator; |
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use Graze\DataFile\Helper\Builder\BuilderAwareInterface; |
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use Graze\DataFile\Helper\GetOptionTrait; |
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use Graze\DataFile\Helper\OptionalLoggerTrait; |
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use Graze\DataFile\Helper\Process\ProcessTrait; |
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use Graze\DataFile\Modify\Compress\CompressionFactory; |
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use Graze\DataFile\Modify\MakeDirectory; |
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use Graze\DataFile\Node\FileNode; |
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use Graze\DataFile\Node\FileNodeCollectionInterface; |
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use Graze\DataFile\Node\FileNodeInterface; |
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use Graze\DataFile\Node\LocalFile; |
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use Psr\Log\LoggerAwareInterface; |
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use Psr\Log\LogLevel; |
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use Symfony\Component\Process\Exception\ProcessFailedException; |
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class MergeFiles implements FileContractorInterface, LoggerAwareInterface, BuilderAwareInterface |
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{ |
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use GetOptionTrait; |
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use OptionalLoggerTrait; |
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use ProcessTrait; |
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/** |
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* @param FileNodeCollectionInterface $files |
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* @param FileNodeInterface $target |
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* |
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* @return bool |
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*/ |
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public function canContract(FileNodeCollectionInterface $files, FileNodeInterface $target) |
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{ |
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if (!($target instanceof LocalFile)) { |
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return false; |
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} |
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foreach ($files->getIterator() as $file) { |
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if (!($file instanceof LocalFile) || |
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!($file->exists()) || |
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($file->getCompression() != CompressionFactory::TYPE_NONE) |
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) { |
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return false; |
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} |
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} |
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return true; |
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} |
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/** |
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* Do the expansion and return a collection |
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* |
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* @param FileNodeCollectionInterface $files |
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* @param FileNodeInterface $target |
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* @param array $options :keepOldFiles <bool> (Default: true) Keep the old files after merging |
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* |
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* @return FileNodeInterface |
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*/ |
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public function contract( |
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FileNodeCollectionInterface $files, |
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FileNodeInterface $target, |
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array $options = [] |
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) { |
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$this->options = $options; |
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if (!$this->canContract($files, $target)) { |
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throw new \InvalidArgumentException("The supplied files are not valid"); |
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} |
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$this->log(LogLevel::INFO, "Merging files in collection $files into: {$target}"); |
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$filePaths = $files->map(function (LocalFile $item) { |
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return $item->getPath(); |
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}); |
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$cmd = sprintf( |
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'cat %s > %s', |
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implode(' ', $filePaths), |
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$target->getPath() |
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); |
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return $this->runCommand($files, $target, $cmd, $this->getOption('keepOldFiles', true)); |
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} |
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/** |
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* @param FileNodeCollectionInterface $files |
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* @param FileNodeInterface $target |
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* @param string $cmd |
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* @param bool $keepOld |
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* |
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* @return FileNodeInterface |
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* @throws \Graze\DataFile\Modify\Exception\MakeDirectoryFailedException |
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*/ |
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private function runCommand(FileNodeCollectionInterface $files, FileNodeInterface $target, $cmd, $keepOld = true) |
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{ |
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if ($target instanceof FileNode) { |
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$maker = new MakeDirectory(); |
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$maker->makeDirectory($target); |
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} |
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$process = $this->getProcess($cmd); |
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$process->run(); |
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if (!$process->isSuccessful()) { |
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throw new ProcessFailedException($process); |
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} |
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if (!$keepOld) { |
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$this->log(LogLevel::DEBUG, "Deleting old files in collection $files"); |
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$files->map(function (LocalFile $item) { |
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if ($item->exists()) { |
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$item->delete(); |
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} |
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$count = iterator_count(new DirectoryIterator($item->getDirectory())); |
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if ($count == 2) { |
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rmdir($item->getDirectory()); |
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} |
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}); |
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} |
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return $target; |
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} |
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} |
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graze /
data-file
