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<?php |
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namespace Koded\Http; |
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/* |
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* This file is part of the Koded package. |
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* |
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* (c) Mihail Binev <[email protected]> |
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* |
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* Please view the LICENSE distributed with this source code |
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* for the full copyright and license information. |
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* |
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*/ |
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use InvalidArgumentException; |
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use Psr\Http\Message\{StreamInterface, UploadedFileInterface}; |
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use RuntimeException; |
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/** |
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* @param null|callable|StreamInterface|object|resource $resource A gypsy wannabe argument |
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* @param string $mode |
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* |
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* @return StreamInterface |
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*/ |
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function create_stream($resource, string $mode = 'r+'): StreamInterface |
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{ |
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if (null === $resource || is_string($resource)) { |
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$stream = fopen('php://temp', $mode); |
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fwrite($stream, $resource); |
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fseek($stream, 0); |
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return new Stream($stream); |
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} |
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if ($resource instanceof StreamInterface) { |
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return $resource; |
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} |
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if (is_callable($resource)) { |
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return new CallableStream($resource); |
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} |
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$type = gettype($resource); |
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if ('resource' === $type) { |
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return new Stream($resource); |
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} |
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if ('object' === $type && method_exists($resource, '__toString')) { |
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return create_stream((string)$resource); |
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} |
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throw new InvalidArgumentException('Failed to create a stream. ' |
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. 'Expected a file name, StreamInterface instance, or a resource. ' |
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. "Given {$type} type."); |
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} |
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/** |
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* Copies the stream to another stream object. |
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* |
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* @param StreamInterface $source The source stream object |
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* @param StreamInterface $destination Destination stream object |
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* @param int [optional] $length Read up to $length bytes from the source stream. |
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* Fewer than $length bytes may be returned if underlying stream |
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* call returns fewer bytes |
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* |
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* @return int The total count of bytes copied |
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*/ |
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function stream_copy(StreamInterface $source, StreamInterface $destination, int $length = 8192): int |
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{ |
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$bytes = 0; |
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while (false === $source->eof()) { |
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$bytes += $destination->write($source->read($length)); |
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} |
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$destination->close(); |
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return $bytes; |
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} |
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/** |
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* @param StreamInterface $stream |
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* |
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* @return string |
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* @throws RuntimeException on failure |
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*/ |
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function stream_to_string(StreamInterface $stream): string |
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{ |
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$content = ''; |
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$stream->rewind(); |
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while (false === $stream->eof()) { |
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$content .= $stream->read(1048576); // 1MB |
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} |
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return $content; |
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} |
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/** |
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* Transforms the array to much desired files array structure. |
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* Deals with any nested level. |
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* |
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* @param array $files Typically the $_FILES array |
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* |
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* @return array A files array to a sane format |
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*/ |
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function normalize_files_array(array $files): array |
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{ |
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$sane = function(array $files, array $file = [], array $path = []) use (&$sane) { |
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foreach ($files as $k => $v) { |
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$list = $path; |
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$list[] = $k; |
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if (is_array($v)) { |
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$file = $sane($v, $file, $list); |
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} else { |
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$next = array_splice($list, 1, 1); |
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$copy = &$file; |
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foreach (array_merge($list, $next) as $k) { |
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$copy = &$copy[$k]; |
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} |
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$copy = $v; |
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} |
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} |
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return $file; |
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}; |
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return $sane($files); |
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} |
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/** |
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* Preserves the array structure and replaces the |
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* file description with instance of UploadedFile. |
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* |
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* @param array $files Normalized _FILES array |
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* |
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* @return array An array tree of UploadedFileInterface instances |
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*/ |
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function build_files_array(array $files): array |
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{ |
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foreach ($files as $index => $file) { |
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if ($file instanceof UploadedFileInterface) { |
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$files[$index] = $file; |
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} elseif (isset($file['tmp_name']) && is_array($file)) { |
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$files[$index] = new UploadedFile($file); |
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} elseif (is_array($file)) { |
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$files[$index] = build_files_array($file); |
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continue; |
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} else { |
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throw new InvalidArgumentException('Failed to process the uploaded files. Invalid file structure provided'); |
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} |
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} |
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return $files; |
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} |
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kodedphp /
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