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<?php |
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namespace roxblnfk\SmartStream\Data; |
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use InvalidArgumentException; |
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use SplFileInfo; |
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use Yiisoft\Http\Header; |
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class FileBucket extends DataBucket |
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{ |
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public const TYPE_OCTET_STREAM = 'application/octet-stream'; |
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protected const DISPOSITION_INLINE = 'inline'; |
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protected const DISPOSITION_ATTACHMENT = 'attachment'; |
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protected const IS_CONVERTABLE = false; |
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protected ?string $contentType = null; |
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protected ?string $contentDisposition = null; |
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protected ?string $fileName = null; |
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/** |
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* FileBucket constructor. |
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* @param string|resource|SplFileInfo $data |
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* @param null|string $contentType |
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* @param null|string $fileName |
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* @throws \Exception |
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*/ |
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public function __construct($data, string $contentType = null, string $fileName = null) |
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{ |
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switch (true) { |
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case $data instanceof SplFileInfo: |
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if (!$data->isFile()) { |
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throw new InvalidArgumentException('File does not exist or is not a file.'); |
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} |
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$fileName = $fileName ?? $data->getFilename(); |
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// $contentType = $contentType ?? $this->fileContentType($data->getPathname()); |
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parent::__construct($data); |
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break; |
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case is_string($data): |
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case is_resource($data): |
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parent::__construct($data); |
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break; |
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default: |
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throw new InvalidArgumentException( |
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'The $data parameter must be a resource, a string or an instance of SplFileInfo.' |
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); |
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} |
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if ($contentType !== null) { |
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$this->setContentType($contentType); |
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} |
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if ($fileName !== null) { |
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$this->setAttachment($fileName); |
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} |
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} |
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public static function createFromPath(string $filePath, string $contentType = null, string $fileName = null): self |
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{ |
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return new static(new SplFileInfo($filePath), $contentType, $fileName); |
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} |
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public function getContentType(): ?string |
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{ |
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return $this->contentType; |
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} |
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public function getFileName(): ?string |
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{ |
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return $this->fileName; |
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} |
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public function hasDisposition(): bool |
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{ |
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return $this->contentDisposition !== null; |
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} |
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public function isAttachment(): bool |
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{ |
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return $this->contentDisposition === self::DISPOSITION_ATTACHMENT; |
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} |
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public function isInline(): bool |
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{ |
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return $this->contentDisposition === self::DISPOSITION_INLINE; |
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} |
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public function withAttachment(string $fileName = null): self |
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{ |
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$new = clone $this; |
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$new->setAttachment($fileName); |
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return $new; |
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} |
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public function withContentType(?string $contentType): self |
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{ |
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$new = clone $this; |
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$new->setContentType($contentType); |
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return $new; |
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} |
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public function withInline(string $fileName = null): self |
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{ |
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$new = clone $this; |
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$new->setInline($fileName); |
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return $new; |
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} |
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public function withoutDisposition(): self |
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{ |
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$new = clone $this; |
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$new->contentDisposition = null; |
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$new->setDispositionHeader(); |
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return $new; |
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} |
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public function withAutoContentType(): self |
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{ |
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$new = clone $this; |
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$type = null; |
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if ($new->data instanceof SplFileInfo) { |
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$type = $new->fileContentType($new->data->getPathname()); |
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} elseif (is_string($new->data)) { |
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$type = $new->bufferContentType($new->data); |
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} |
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$new->setContentType($type); |
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return $new; |
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} |
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protected function setContentType(?string $contentType): void |
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{ |
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$this->contentType = $contentType; |
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$this->setHeader(Header::CONTENT_TYPE, $contentType); |
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} |
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protected function setInline(?string $fileName): void |
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{ |
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$this->contentDisposition = self::DISPOSITION_INLINE; |
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$this->fileName = $fileName; |
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$this->setDispositionHeader(); |
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} |
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final protected function setAttachment(?string $fileName): void |
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{ |
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$this->contentDisposition = self::DISPOSITION_ATTACHMENT; |
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$this->fileName = $fileName; |
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$this->setDispositionHeader(); |
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} |
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final protected function setDispositionHeader(): void |
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{ |
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$headerBody = $this->fileName !== null |
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? sprintf( |
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'%s; filename="%s"; filename*=UTF-8\'\'%s', |
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$this->contentDisposition, |
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preg_replace( |
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['/[\x00-\x1F\x7F]/', '/["\\\\]/', '/%([a-f0-9]{2})/'], |
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[' ', '\\\\$0', '%\\\\$1'], $this->fileName), |
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rawurlencode($this->fileName) |
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) |
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: $this->contentDisposition; |
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$this->setHeader(Header::CONTENT_DISPOSITION, $headerBody); |
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} |
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private function fileContentType(string $filePath): ?string |
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{ |
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if (!is_file($filePath) || !is_readable($filePath)) { |
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return null; |
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} |
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return function_exists('mime_content_type') ? mime_content_type($filePath) : null; |
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} |
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private function bufferContentType(string $buffer): ?string |
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{ |
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if (function_exists('finfo_open')) { |
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$finfo = finfo_open(FILEINFO_MIME_TYPE); |
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$result = finfo_buffer($finfo, $buffer); |
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if (is_string($result)) { |
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return $result; |
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} |
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} |
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return null; |
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} |
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} |
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