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<?php |
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/** |
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* CSVelte: Slender, elegant CSV for PHP |
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* |
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* Inspired by Python's CSV module and Frictionless Data and the W3C's CSV |
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* standardization efforts, CSVelte was written in an effort to take all the |
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* suck out of working with CSV. |
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* |
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* @copyright Copyright (c) 2018 Luke Visinoni |
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* @author Luke Visinoni <[email protected]> |
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* @license See LICENSE file (MIT license) |
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*/ |
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namespace CSVelte; |
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use Iterator; |
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use InvalidArgumentException; |
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use CSVelte\Contract\Streamable; |
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use CSVelte\IO\Stream; |
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use CSVelte\IO\StreamResource; |
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use CSVelte\IO\IteratorStream; |
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/** |
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* Stream - streams various types of values and objects. |
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* |
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* You can pass a string, or an iterator, or an object with a __toString() |
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* method to this function and it will find the best possible way to stream the |
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* data from that object. |
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* |
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* @param mixed $obj The item you want to stream |
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* |
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* @throws InvalidArgumentException |
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* |
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* @return Streamable |
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* |
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* @since v0.3 |
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*/ |
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function to_stream($obj = '') |
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{ |
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if ($obj instanceof Streamable) { |
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return $obj; |
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} |
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if ($obj instanceof StreamResource) { |
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return $obj(); |
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} |
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if (is_resource($obj) && get_resource_type($obj) == 'stream') { |
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return new Stream(new StreamResource($obj)); |
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} |
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// @todo this is currently how SplFileObject objects are handled; there's gotta be a better way |
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if ($obj instanceof Iterator) { |
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return new IteratorStream($obj); |
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} |
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if (is_object($obj) && method_exists($obj, '__toString')) { |
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$obj = (string) $obj; |
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} |
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if (is_string($obj)) { |
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$stream = Stream::open('php://temp', 'r+'); |
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if ($obj !== '') { |
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$res = $stream->getResource(); |
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fwrite($res->getHandle(), $obj); |
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fseek($res->getHandle(), 0); |
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} |
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return $stream; |
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} |
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throw new InvalidArgumentException(sprintf( |
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'Invalid argument type for %s: %s', |
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__FUNCTION__, |
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gettype($obj) |
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)); |
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} |
nozavroni /
csvelte
