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<?php |
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namespace Palmtree\Csv; |
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use Palmtree\Csv\Formatter\FormatterInterface; |
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use Palmtree\Csv\Formatter\StringFormatter; |
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use Palmtree\Csv\Row\Row; |
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/** |
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* Reads a CSV file by loading each line into memory |
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* one at a time. |
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*/ |
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class Reader extends AbstractCsv implements \Iterator, \Countable |
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{ |
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public static $defaultFormatter = StringFormatter::class; |
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protected $openMode = 'r'; |
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/** @var FormatterInterface[] */ |
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protected $formatters = []; |
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/** @var int */ |
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protected $index = 0; |
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/** @var Row */ |
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protected $headers; |
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/** @var Row */ |
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protected $row; |
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/** @var string */ |
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protected $escapeCharacter = "\0"; |
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/** |
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* @param $file |
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* |
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* @return Reader |
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*/ |
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public static function read($file) |
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{ |
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$csv = new static($file); |
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return $csv; |
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} |
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public function createDocument() |
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{ |
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parent::createDocument(); |
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$this->getDocument()->setCsvControl($this->getDelimiter(), $this->getEnclosure(), $this->getEscapeCharacter()); |
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} |
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/** |
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* @return Row |
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*/ |
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public function getHeaders() |
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{ |
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return $this->headers; |
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} |
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public function getHeader($key) |
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{ |
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if (!isset($this->headers[$key])) { |
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return $key; |
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} |
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return $this->headers[$key]; |
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} |
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/** |
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* @param mixed $key |
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* @param FormatterInterface $formatter Formatter instance. |
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* |
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* @return $this |
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*/ |
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public function addFormatter($key, FormatterInterface $formatter) |
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{ |
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$this->formatters[$key] = $formatter; |
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return $this; |
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} |
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/** |
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* @param array|\Traversable $formatters |
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* |
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* @return $this |
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*/ |
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public function addFormatters($formatters) |
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{ |
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foreach ($formatters as $key => $formatter) { |
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$this->addFormatter($key, $formatter); |
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} |
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return $this; |
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} |
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/** |
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* @param mixed $key |
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* |
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* @return FormatterInterface |
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*/ |
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public function getFormatter($key) |
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{ |
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if (!isset($this->formatters[$key])) { |
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$class = static::$defaultFormatter; |
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$this->formatters[$key] = new $class(); |
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} |
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return $this->formatters[$key]; |
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} |
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/** |
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* @return string |
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*/ |
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public function getEscapeCharacter() |
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{ |
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return $this->escapeCharacter; |
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} |
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/** |
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* @param string $escapeCharacter |
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* |
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* @return AbstractCsv |
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*/ |
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public function setEscapeCharacter($escapeCharacter) |
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{ |
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$this->escapeCharacter = $escapeCharacter; |
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return $this; |
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} |
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/** |
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* Reads the next line in the CSV file |
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* and returns a Row object from it. |
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* |
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* @return Row |
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*/ |
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protected function getNextRow() |
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{ |
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$cells = $this->getDocument()->current(); |
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if (!is_array($cells)) { |
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return null; |
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} |
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$row = new Row($cells, $this); |
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return $row; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function current() |
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{ |
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return $this->row; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function next() |
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{ |
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$this->getDocument()->next(); |
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++$this->index; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function key() |
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{ |
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return $this->index; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function valid() |
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{ |
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$this->row = $this->getNextRow(); |
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return $this->row instanceof Row; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function rewind() |
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{ |
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$this->getDocument()->rewind(); |
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$this->index = 0; |
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if ($this->hasHeaders()) { |
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$this->headers = $this->getNextRow(); |
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} |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function count() |
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{ |
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return count(iterator_to_array($this)); |
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} |
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} |
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palmtreephp /
csv
