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<?php |
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/** |
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* This file is part of graze/data-file |
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* |
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* Copyright (c) 2016 Nature Delivered Ltd. <https://www.graze.com> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* |
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* @license https://github.com/graze/data-file/blob/master/LICENSE.md |
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* @link https://github.com/graze/data-file |
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*/ |
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namespace Graze\DataFile\Format\Formatter; |
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use Graze\DataFile\Format\CsvFormatInterface; |
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use Graze\DataFile\Format\Processor\BoolProcessor; |
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use Graze\DataFile\Format\Processor\DateTimeProcessor; |
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use Graze\DataFile\Format\Processor\ObjectToStringProcessor; |
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use Graze\DataFile\Format\Processor\RowProcessor; |
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use Traversable; |
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class CsvFormatter implements FormatterInterface |
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{ |
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use RowProcessor; |
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use InvokeFormatter; |
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use TraversableTrait; |
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/** @var CsvFormatInterface */ |
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private $csvFormat; |
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/** @var string[] */ |
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private $escapeChars; |
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/** @var string[] */ |
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private $replaceChars; |
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/** @var string */ |
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private $initial; |
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/** @var bool */ |
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private $first = true; |
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/** |
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* @param CsvFormatInterface $csvFormat |
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*/ |
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public function __construct(CsvFormatInterface $csvFormat) |
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{ |
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$this->csvFormat = $csvFormat; |
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$this->buildReplacements(); |
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$this->initial = (!is_null($this->csvFormat->getBom())) ? $this->csvFormat->getBom() : ''; |
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$this->addProcessor(new DateTimeProcessor()); |
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$this->addProcessor(new BoolProcessor()); |
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$this->addProcessor(new ObjectToStringProcessor()); |
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} |
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/** |
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* Build replacements to perform for each entry |
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*/ |
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private function buildReplacements() |
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{ |
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if ($this->csvFormat->getEscape()) { |
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$this->escapeChars = [ |
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$this->csvFormat->getEscape(), // escape escape first so that it doesn't re-escape later on |
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$this->csvFormat->getDelimiter(), |
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"\n", |
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"\r", |
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"\t", |
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]; |
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if ($this->csvFormat->hasQuote() && !$this->csvFormat->useDoubleQuotes()) { |
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$this->escapeChars[] = $this->csvFormat->getQuote(); |
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} |
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$this->escapeChars = array_unique($this->escapeChars); |
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$this->replaceChars = array_map(function ($char) { |
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return $this->csvFormat->getEscape() . $char; |
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}, $this->escapeChars); |
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} |
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if ($this->csvFormat->hasQuote() && $this->csvFormat->useDoubleQuotes()) { |
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$this->escapeChars[] = $this->csvFormat->getQuote(); |
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$this->replaceChars[] = str_repeat($this->csvFormat->getQuote(), 2); |
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} |
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} |
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/** |
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* Gets a prefix for headers if required |
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* |
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* @param array $data |
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* |
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* @return string |
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*/ |
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private function getHeaderPrefix(array $data) |
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{ |
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if ($this->first && $this->csvFormat->hasHeaderRow()) { |
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$this->first = false; |
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$postHeaderPad = $this->csvFormat->getDataStart() - $this->csvFormat->getHeaderRow(); |
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return $this->format(array_keys($data)) . str_repeat($this->getRowSeparator(), $postHeaderPad); |
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} |
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return ''; |
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} |
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/** |
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* @param array|Traversable $row |
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* |
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* @return string |
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*/ |
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public function format($row) |
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{ |
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$data = $this->getArray($row); |
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$prefix = $this->getHeaderPrefix($data); |
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$data = $this->process($data); |
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foreach ($data as &$element) { |
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if (is_null($element)) { |
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$element = $this->csvFormat->getNullValue(); |
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} else { |
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$element = $this->csvFormat->getQuote() . $this->escape($element) . $this->csvFormat->getQuote(); |
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} |
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} |
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return $prefix . $this->encode(implode($this->csvFormat->getDelimiter(), $data)); |
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} |
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/** |
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* @param string $string |
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* |
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* @return string |
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*/ |
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protected function escape($string) |
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{ |
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return str_replace($this->escapeChars, $this->replaceChars, $string); |
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} |
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/** |
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* @param string $string |
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* |
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* @return string |
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*/ |
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private function encode($string) |
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{ |
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return mb_convert_encoding($string, $this->csvFormat->getEncoding()); |
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} |
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/** |
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* Return an initial block if required |
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* |
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* @return string |
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*/ |
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public function getInitialBlock() |
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{ |
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$linePad = $this->csvFormat->hasHeaderRow() ? |
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1 |
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$this->csvFormat->getHeaderRow() - 1 : |
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$this->csvFormat->getDataStart() - 1; |
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return $this->initial . str_repeat($this->getRowSeparator(), $linePad); |
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} |
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/** |
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* Get a separator between each row |
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* |
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* @return string |
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*/ |
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public function getRowSeparator() |
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{ |
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return $this->encode($this->csvFormat->getNewLine()); |
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} |
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/** |
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* Return a closing block if required |
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* |
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* @return string |
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*/ |
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public function getClosingBlock() |
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{ |
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return ''; |
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} |
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} |
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graze /
data-file
