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<?php |
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namespace Box\Spout\Writer\CSV; |
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use Box\Spout\Writer\AbstractWriter; |
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use Box\Spout\Common\Exception\IOException; |
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use Box\Spout\Common\Helper\EncodingHelper; |
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/** |
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* Class Writer |
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* This class provides support to write data to CSV files |
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* |
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* @package Box\Spout\Writer\CSV |
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*/ |
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class Writer extends AbstractWriter |
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{ |
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/** Number of rows to write before flushing */ |
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const FLUSH_THRESHOLD = 500; |
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/** @var string Content-Type value for the header */ |
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protected static $headerContentType = 'text/csv; charset=UTF-8'; |
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/** @var string Defines the character used to delimit fields (one character only) */ |
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protected $fieldDelimiter = ','; |
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/** @var string Defines the character used to enclose fields (one character only) */ |
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protected $fieldEnclosure = '"'; |
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/** @var int */ |
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protected $lastWrittenRowIndex = 0; |
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/** |
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* Sets the field delimiter for the CSV |
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* |
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* @api |
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* @param string $fieldDelimiter Character that delimits fields |
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* @return Writer |
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*/ |
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public function setFieldDelimiter($fieldDelimiter) |
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{ |
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$this->fieldDelimiter = $fieldDelimiter; |
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return $this; |
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} |
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/** |
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* Sets the field enclosure for the CSV |
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* |
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* @api |
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* @param string $fieldEnclosure Character that enclose fields |
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* @return Writer |
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*/ |
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public function setFieldEnclosure($fieldEnclosure) |
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{ |
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$this->fieldEnclosure = $fieldEnclosure; |
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return $this; |
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} |
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/** |
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* Opens the CSV streamer and makes it ready to accept data. |
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* |
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* @return void |
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*/ |
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protected function openWriter() |
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{ |
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// Adds UTF-8 BOM for Unicode compatibility |
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$this->globalFunctionsHelper->fputs($this->filePointer, EncodingHelper::BOM_UTF8); |
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} |
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/** |
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* Adds data to the currently opened writer. |
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* |
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* @param array $dataRow Array containing data to be written. |
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* Example $dataRow = ['data1', 1234, null, '', 'data5']; |
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* @param \Box\Spout\Writer\Style\Style $style Ignored here since CSV does not support styling. |
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* @return void |
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* @throws \Box\Spout\Common\Exception\IOException If unable to write data |
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*/ |
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protected function addRowToWriter(array $dataRow, $style) |
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{ |
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$wasWriteSuccessful = $this->globalFunctionsHelper->fputcsv($this->filePointer, $dataRow, $this->fieldDelimiter, $this->fieldEnclosure); |
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if ($wasWriteSuccessful === false) { |
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throw new IOException('Unable to write data'); |
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} |
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$this->lastWrittenRowIndex++; |
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if ($this->lastWrittenRowIndex % self::FLUSH_THRESHOLD === 0) { |
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$this->globalFunctionsHelper->fflush($this->filePointer); |
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} |
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} |
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/** |
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* Closes the CSV streamer, preventing any additional writing. |
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* If set, sets the headers and redirects output to the browser. |
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* |
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* @return void |
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*/ |
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protected function closeWriter() |
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{ |
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$this->lastWrittenRowIndex = 0; |
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} |
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} |
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box /
spout
