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<?php |
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namespace Jackal\Copycat\Writer; |
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use Exception; |
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use InvalidArgumentException; |
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use Symfony\Component\OptionsResolver\OptionsResolver; |
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/** |
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* Class SQLFileWriter |
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* @package Jackal\Copycat\Writer |
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*/ |
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class SQLFileWriter implements WriterInterface |
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{ |
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/** |
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* @var string |
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*/ |
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protected $outputFilePathname; |
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/** |
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* @var string |
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*/ |
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protected $tableName; |
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/** |
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* @var array |
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*/ |
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protected $options = []; |
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/** |
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* @var int |
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*/ |
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protected $index; |
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/** |
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* @var array |
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*/ |
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protected $cols = []; |
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/** |
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* SQLFileWriter constructor. |
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* @param $tableName |
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* @param $outputFilePathname |
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* @param array $options |
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*/ |
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public function __construct($tableName, $outputFilePathname, array $options = []) |
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{ |
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$this->tableName = $tableName; |
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$this->outputFilePathname = $outputFilePathname; |
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$resolver = new OptionsResolver(); |
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$resolver->setDefaults([ |
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'replace_file' => false, |
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'columns' => [], |
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'exception_on_extra_columns' => false, |
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'drop_data' => false, |
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]); |
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$this->options = $resolver->resolve($options); |
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} |
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/** |
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* @param $content |
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*/ |
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private function appendRow($content) |
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{ |
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file_put_contents($this->outputFilePathname, $content, FILE_APPEND); |
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} |
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/** |
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* @param array $item |
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*/ |
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public function writeItem(array $item) |
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{ |
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if ($this->index == 0) { |
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if (!$this->options['columns']) { |
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$this->cols = array_keys($item); |
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} else { |
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$this->cols = $this->options['columns']; |
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} |
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} |
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//raise exception on extra columns |
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if ($this->options['exception_on_extra_columns']) { |
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$extraColumns = []; |
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foreach (array_keys($item) as $itemKey) { |
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if (!in_array($itemKey, $this->cols)) { |
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$extraColumns[] = $itemKey; |
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} |
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} |
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if ($extraColumns) { |
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throw new InvalidArgumentException(sprintf( |
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'Row %s had extra columns %s. (Defined columns: %s)', |
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$this->index + 1, |
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'"' . implode('", "', $extraColumns) . '"', |
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'"' . implode('", "', $this->cols) . '"' |
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)); |
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} |
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} |
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//Fill array maintain defined order |
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foreach ($this->cols as $key => $colName) { |
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if (!array_key_exists($colName, $item)) { |
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$item[$colName] = null; |
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} |
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} |
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$itemOrdered = []; |
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$colOrder = array_flip($this->cols); |
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foreach ($colOrder as $colKey => $colValue) { |
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$itemOrdered[$colKey] = $item[$colKey]; |
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} |
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$item = $itemOrdered; |
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if ($this->index == 0) { |
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if ($this->options['drop_data']) { |
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$this->appendRow(sprintf("delete from %s\n", $this->tableName)); |
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} |
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$this->appendRow(sprintf("insert into %s (%s) values\n", $this->tableName, implode(', ', array_keys($item)))); |
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} else { |
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$this->appendRow(",\n"); |
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} |
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$item = array_reduce($item, function ($outCell, $currentCell) { |
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if (is_null($currentCell)) { |
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$outCell[] = 'null'; |
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return $outCell; |
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} |
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//escape sql string |
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$search = ['\\', "\x00", "\n", "\r", "'", '"', "\x1a"]; |
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$replace = ['\\\\','\\0','\\n', '\\r', "\'", '\"', '\\Z']; |
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$outCell[] = '"' . str_replace($search, $replace, $currentCell) . '"'; |
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return $outCell; |
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}, []); |
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$rowString = sprintf('(%s)', implode(', ', array_values($item))); |
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$this->appendRow($rowString); |
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$this->index++; |
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} |
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/** |
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* @throws Exception |
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*/ |
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public function prepare() |
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{ |
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if (!is_dir(dirname($this->outputFilePathname))) { |
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mkdir(dirname($this->outputFilePathname), 0775, true); |
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} |
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$fileExists = file_exists($this->outputFilePathname); |
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if ($fileExists and !$this->options['replace_file']) { |
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throw new Exception('File ' . realpath($this->outputFilePathname) . ' already exists'); |
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} |
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if ($fileExists) { |
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unlink($this->outputFilePathname); |
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} |
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} |
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/** |
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* |
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*/ |
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public function finish() |
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{ |
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$this->appendRow(';'); |
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} |
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} |
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