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<?php |
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declare(strict_types=1); |
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namespace PhpCfdi\SatCatalogosPopulate\Utils; |
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use Generator; |
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use Iterator; |
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use PhpCfdi\SatCatalogosPopulate\Utils\ArrayProcessors\ArrayProcessorInterface; |
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use PhpCfdi\SatCatalogosPopulate\Utils\ArrayProcessors\NullArrayProcessor; |
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use SeekableIterator; |
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use SplFileObject; |
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use UnexpectedValueException; |
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/** |
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* @implements SeekableIterator<int, array<int, scalar>> |
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*/ |
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class CsvFile implements SeekableIterator |
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{ |
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private SplFileObject $file; |
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private ArrayProcessorInterface $rowProcessor; |
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public function __construct(string $filename, ArrayProcessorInterface $rowProcessor = null) |
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{ |
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if ('' === $filename) { |
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throw new UnexpectedValueException('The filename cannot be empty'); |
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} |
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if (is_dir($filename)) { |
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throw new UnexpectedValueException('The filename is a directory'); |
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} |
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$this->file = new SplFileObject($filename, 'r'); |
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$this->rowProcessor = $rowProcessor ?? new NullArrayProcessor(); |
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} |
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100 |
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public function position(): int |
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{ |
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return $this->file->key(); |
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} |
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public function move(int $position): void |
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{ |
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$position = max(0, $position); |
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200 |
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if (0 === $position) { |
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$this->file->rewind(); |
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return; |
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} |
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199 |
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if (1 === $position) { |
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// this is a bugfix, otherwise it doesn't go to line 1 |
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$this->file->rewind(); |
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$this->current(); |
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$this->file->next(); |
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return; |
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} |
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$this->file->seek($position); |
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} |
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public function next(int $times = 1): void |
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{ |
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if (1 === $times) { |
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$this->file->next(); |
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return; |
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} |
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$this->move($this->position() + $times); |
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} |
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/** @return Generator<int, array<int, scalar>> */ |
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public function readLines(): Iterator |
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{ |
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while (! $this->eof()) { |
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yield $this->readLine(); |
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$this->next(); |
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} |
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} |
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public function previous(int $times = 1): void |
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{ |
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$this->move($this->position() - $times); |
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} |
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public function eof(): bool |
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{ |
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if (! $this->file->valid()) { |
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return true; |
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} |
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if ('' !== $this->file->current()) { |
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return false; |
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} |
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// am I at the last empty line? |
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$this->file->next(); |
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if ($this->file->valid()) { |
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$this->previous(); |
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return false; |
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} |
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return true; |
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} |
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/** @return array<int, scalar> */ |
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public function readLine(): array |
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{ |
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197 |
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if ($this->eof()) { |
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return []; |
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} |
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$contents = $this->file->current(); |
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$contents = (! is_string($contents)) ? '' : $contents; |
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$values = array_map( |
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fn ($value) => (is_scalar($value)) ? $value : '', |
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str_getcsv($contents) |
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); |
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return $this->rowProcessor->execute($values); |
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} |
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/** @return array<int, scalar> */ |
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3 |
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public function current(): array |
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{ |
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3 |
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return $this->readLine(); |
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} |
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public function key(): int |
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{ |
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return $this->file->key(); |
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} |
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1 |
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public function valid(): bool |
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{ |
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1 |
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return ! $this->eof(); |
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} |
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1 |
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public function rewind(): void |
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{ |
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1 |
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$this->file->rewind(); |
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} |
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public function seek(int $offset): void |
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140
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{ |
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$this->move($offset); |
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142
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} |
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143
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} |
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phpcfdi /
sat-catalogos-populate
