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<?php |
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/** |
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* This file is part of graze/csv-token |
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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/csv-token/blob/master/LICENSE.md |
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* @link https://github.com/graze/csv-token |
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*/ |
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namespace Graze\CsvToken; |
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use ArrayIterator; |
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use Graze\CsvToken\Tokeniser\Token\Token; |
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use Graze\CsvToken\ValueParser\Value; |
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use Graze\CsvToken\ValueParser\ValueParserInterface; |
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use Iterator; |
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use RuntimeException; |
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class Parser implements ParserInterface |
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{ |
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/** @var ValueParserInterface[] */ |
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private $valueParsers = []; |
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/** |
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* Parser constructor. |
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* |
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* @param ValueParserInterface[] $valueParsers |
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*/ |
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public function __construct(array $valueParsers = []) |
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{ |
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array_map([$this, 'addValueParser'], $valueParsers); |
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} |
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/** |
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* @param Iterator $tokens |
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* |
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* @return Iterator Iterator of csv line arrays |
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*/ |
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public function parse(Iterator $tokens) |
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{ |
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$value = new Value($this->valueParsers); |
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$row = []; |
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foreach ($tokens as $token) { |
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switch ($token[0]) { |
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case Token::T_QUOTE: |
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$value->setInQuotes(!$value->isInQuotes()); |
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break; |
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case Token::T_CONTENT: |
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$value->addContent($token[1]); |
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break; |
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case Token::T_DOUBLE_QUOTE: |
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$value->addContent(substr($token[1], 0, $token[3] / 2)); |
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break; |
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case Token::T_NULL: |
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if ($value->isEmpty() && !$value->isInQuotes() && !$value->wasQuoted()) { |
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$value->addContent($token[1]); |
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$value->setIsNull(); |
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} else { |
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$value->addContent($token[1]); |
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} |
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break; |
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case Token::T_DELIMITER: |
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$row[] = $value->getValue(); |
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$value->reset(); |
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break; |
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case Token::T_NEW_LINE: |
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$row[] = $value->getValue(); |
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$value->reset(); |
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yield $row; |
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$row = []; |
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break; |
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default: |
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break; |
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} |
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} |
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if (!$value->isEmpty()) { |
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if ($value->isInQuotes()) { |
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throw new RuntimeException("Unmatched quote at the end of the csv data"); |
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} |
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$row[] = $value->getValue(); |
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} |
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if (count($row) > 0) { |
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yield $row; |
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} |
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} |
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/** |
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* @param ValueParserInterface $valueParser |
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*/ |
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public function addValueParser(ValueParserInterface $valueParser) |
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{ |
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$this->valueParsers[] = $valueParser; |
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} |
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/** |
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* @param ValueParserInterface $valueParser |
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*/ |
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public function removeValueParser(ValueParserInterface $valueParser) |
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{ |
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$index = array_search($valueParser, $this->valueParsers, true); |
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if ($index !== false) { |
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unset($this->valueParsers[$index]); |
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} |
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} |
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/** |
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* @param ValueParserInterface $valueParser |
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* |
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* @return bool |
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*/ |
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public function hasValueParser(ValueParserInterface $valueParser) |
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{ |
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return in_array($valueParser, $this->valueParsers); |
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} |
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} |
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graze /
csv-token
