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<?php |
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namespace Palmtree\Csv; |
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class CsvFileObject extends \SplFileObject |
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{ |
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protected $bytesWritten = 0; |
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protected $lineEnding = "\r\n"; |
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public function fwriteCsv($fields, $delimiter = null, $enclosure = null) |
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{ |
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$bytes = $this->fwrite($this->getCsvString($fields, $delimiter, $enclosure)); |
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if ($bytes === false) { |
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return false; |
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} |
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$this->bytesWritten += $bytes; |
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return $bytes; |
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} |
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public function __destruct() |
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{ |
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$this->trimFinalLineEnding(); |
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} |
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/** |
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* Returns a string representation of a row to be written |
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* as a line in a CSV file. |
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* |
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* @param array $row |
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* |
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* @param $delimiter |
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* @param $enclosure |
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* |
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* @return string |
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*/ |
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protected function getCsvString($row, $delimiter, $enclosure) |
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{ |
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$csvControl = $this->getCsvControl(); |
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$delimiter = $delimiter ? : $csvControl[0]; |
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$enclosure = $enclosure ? : $csvControl[1]; |
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$result = $enclosure; |
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$result .= implode($enclosure . $delimiter . $enclosure, self::escapeEnclosure($row, $enclosure)); |
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$result .= $enclosure; |
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$result .= $this->getLineEnding(); |
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return $result; |
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} |
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/** |
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* @return int |
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*/ |
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public function getBytesWritten() |
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{ |
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return (int)$this->bytesWritten; |
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} |
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/** |
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* @return string |
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*/ |
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public function getLineEnding() |
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{ |
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return $this->lineEnding; |
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} |
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/** |
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* @param string $lineEnding |
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* |
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* @return CsvFileObject |
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*/ |
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public function setLineEnding($lineEnding) |
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{ |
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$this->lineEnding = $lineEnding; |
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return $this; |
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} |
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/** |
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* Trims the line ending delimiter from the end of the CSV file. |
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* RFC-4180 states CSV files should not contain a trailing new line. |
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*/ |
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public function trimFinalLineEnding() |
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{ |
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if ($this->getBytesWritten() > 0) { |
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// Only trim the file if it ends with the line ending delimiter. |
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$length = mb_strlen($this->getLineEnding()); |
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$this->fseek(-$length, SEEK_END); |
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$chunk = $this->fread($length); |
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if ($chunk === $this->getLineEnding()) { |
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$this->ftruncate($this->getBytesWritten() - $length); |
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} |
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} |
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} |
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/** |
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* Escapes the enclosure character recursively. |
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* RFC-4180 states the enclosure character (usually double quotes) should be |
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* escaped by itself, so " becomes "". |
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* |
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* @param mixed $data Array or string of data to escape. |
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* |
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* @param $enclosure |
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* |
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* @return mixed Escaped data |
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*/ |
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protected static function escapeEnclosure($data, $enclosure) |
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{ |
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if (is_array($data)) { |
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foreach ($data as $key => $value) { |
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$data[$key] = self::escapeEnclosure($value, $enclosure); |
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} |
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} else { |
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$data = str_replace($enclosure, str_repeat($enclosure, 2), $data); |
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} |
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return $data; |
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} |
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} |
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palmtreephp /
csv
