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<?php
namespace GuzzleHttp\Post;
use GuzzleHttp\Mimetypes;
use GuzzleHttp\Stream\StreamInterface;
use GuzzleHttp\Stream\Stream;
/**
* Post file upload
*/
class PostFile implements PostFileInterface
{
private $name;
private $filename;
private $content;
private $headers = [];
/**
* @param string $name Name of the form field
* @param mixed $content Data to send
* @param string|null $filename Filename content-disposition attribute
* @param array $headers Array of headers to set on the file
* (can override any default headers)
* @throws \RuntimeException when filename is not passed or can't be determined
*/
public function __construct(
$name,
$content,
$filename = null,
array $headers = []
) {
$this->headers = $headers;
$this->name = $name;
$this->prepareContent($content);
$this->prepareFilename($filename);
$this->prepareDefaultHeaders();
}
public function getName()
{
return $this->name;
}
public function getFilename()
{
return $this->filename;
}
public function getContent()
{
return $this->content;
}
public function getHeaders()
{
return $this->headers;
}
/**
* Prepares the contents of a POST file.
*
* @param mixed $content Content of the POST file
*/
private function prepareContent($content)
{
$this->content = $content;
if (!($this->content instanceof StreamInterface)) {
$this->content = Stream::factory($this->content);
} elseif ($this->content instanceof MultipartBody) {
if (!$this->hasHeader('Content-Disposition')) {
$disposition = 'form-data; name="' . $this->name .'"';
$this->headers['Content-Disposition'] = $disposition;
}
if (!$this->hasHeader('Content-Type')) {
$this->headers['Content-Type'] = sprintf(
"multipart/form-data; boundary=%s",
$this->content->getBoundary()
);
}
}
}
/**
* Applies a file name to the POST file based on various checks.
*
* @param string|null $filename Filename to apply (or null to guess)
*/
private function prepareFilename($filename)
{
$this->filename = $filename;
if (!$this->filename) {
$this->filename = $this->content->getMetadata('uri');
}
if (!$this->filename || substr($this->filename, 0, 6) === 'php://') {
$this->filename = $this->name;
}
}
/**
* Applies default Content-Disposition and Content-Type headers if needed.
*/
private function prepareDefaultHeaders()
{
// Set a default content-disposition header if one was no provided
if (!$this->hasHeader('Content-Disposition')) {
$this->headers['Content-Disposition'] = sprintf(
'form-data; name="%s"; filename="%s"',
$this->name,
basename($this->filename)
);
}
// Set a default Content-Type if one was not supplied
if (!$this->hasHeader('Content-Type')) {
$this->headers['Content-Type'] = Mimetypes::getInstance()
->fromFilename($this->filename) ?: 'text/plain';
}
}
/**
* Check if a specific header exists on the POST file by name.
*
* @param string $name Case-insensitive header to check
*
* @return bool
*/
private function hasHeader($name)
{
return isset(array_change_key_case($this->headers)[strtolower($name)]);
}
}
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