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<?php |
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namespace TreeHouse\Feeder\Reader; |
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use SplFileObject; |
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use Symfony\Component\HttpFoundation\ParameterBag; |
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use TreeHouse\Feeder\Resource\ResourceInterface; |
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class CsvReader extends AbstractReader |
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{ |
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/** |
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* @var SplFileObject |
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*/ |
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protected $fileObject; |
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/** |
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* @var array |
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*/ |
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protected $mapping; |
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/** |
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* @var bool |
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*/ |
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protected $useFirstRow; |
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/** |
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* @var string |
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*/ |
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protected $delimiter = ','; |
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/** |
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* @var string |
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*/ |
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protected $enclosure = '"'; |
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/** |
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* @var string |
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*/ |
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protected $escape = '\\'; |
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/** |
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* @var bool |
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*/ |
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protected $convertNull; |
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/** |
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* Sets a mapping to use for each row. If the CSV has the column names exported, |
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* you can use {@link useFirstRow} to auto-generate the field mapping. |
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* |
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* @param array $mapping |
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*/ |
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public function setFieldMapping(array $mapping) |
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{ |
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$this->mapping = $mapping; |
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} |
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/** |
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* When true, the first row in the CSV file is used to generate the field mapping. |
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* |
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* @param bool $bool |
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*/ |
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public function useFirstRow($bool = true) |
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{ |
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$this->useFirstRow = (boolean) $bool; |
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} |
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/** |
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* @param string $delimiter |
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*/ |
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public function setDelimiter($delimiter = ',') |
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{ |
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$this->delimiter = $delimiter; |
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} |
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/** |
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* @param string $enclosure |
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*/ |
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public function setEnclosure($enclosure = '"') |
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{ |
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$this->enclosure = $enclosure; |
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} |
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/** |
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* @param string $escape |
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*/ |
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public function setEscape($escape = '\\') |
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{ |
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$this->escape = $escape; |
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} |
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/** |
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* @return int |
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*/ |
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public function getRowNumber() |
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{ |
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return $this->key() + 1; |
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} |
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/** |
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* When true, "null" and "NULL" are converted to NULL. |
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* |
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* @param bool $bool |
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*/ |
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public function convertNull($bool = true) |
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{ |
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$this->convertNull = (boolean) $bool; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function serialize($data) |
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{ |
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// convert data keys if a mapping is given |
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if ($this->mapping === null) { |
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$this->mapping = array_combine(array_keys($data), array_keys($data)); |
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} |
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$item = new ParameterBag(); |
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foreach ($this->mapping as $index => $field) { |
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$value = array_key_exists($index, $data) ? $data[$index] : null; |
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if ($this->convertNull && in_array($value, ['null', 'NULL'])) { |
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$value = null; |
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} |
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$item->set($field, $value); |
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} |
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return $item; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function doKey() |
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{ |
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return $this->fileObject->key(); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function doCurrent() |
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{ |
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return $this->fileObject->current(); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function doNext() |
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{ |
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$this->fileObject->next(); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function doValid() |
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{ |
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return $this->fileObject->valid() && is_array($this->fileObject->current()); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function doRewind() |
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{ |
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$this->fileObject->rewind(); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function createReader(ResourceInterface $resource) |
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{ |
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$this->fileObject = new SplFileObject($resource->getFile()->getPathname()); |
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$this->fileObject->setFlags(SplFileObject::READ_CSV | SplFileObject::DROP_NEW_LINE | SplFileObject::SKIP_EMPTY); |
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$this->fileObject->setCsvControl($this->delimiter, $this->enclosure, $this->escape); |
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if ($this->useFirstRow) { |
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/** @var array $mapping */ |
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$mapping = $this->fileObject->current(); |
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$this->setFieldMapping($mapping); |
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$this->fileObject->next(); |
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} |
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} |
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} |
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