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<?php
namespace RingCentral\Psr7;
use Psr\Http\Message\StreamInterface;
/**
* Trait implementing functionality common to requests and responses.
*/
abstract class MessageTrait
{
/** @var array Cached HTTP header collection with lowercase key to values */
protected $headers = array();
/** @var array Actual key to list of values per header. */
protected $headerLines = array();
/** @var string */
protected $protocol = '1.1';
/** @var StreamInterface */
protected $stream;
public function getProtocolVersion()
{
return $this->protocol;
}
public function withProtocolVersion($version)
{
if ($this->protocol === $version) {
return $this;
}
$new = clone $this;
$new->protocol = $version;
return $new;
}
public function getHeaders()
{
return $this->headerLines;
}
public function hasHeader($header)
{
return isset($this->headers[strtolower($header)]);
}
public function getHeader($header)
{
$name = strtolower($header);
return isset($this->headers[$name]) ? $this->headers[$name] : array();
}
public function getHeaderLine($header)
{
return implode(', ', $this->getHeader($header));
}
public function withHeader($header, $value)
{
$new = clone $this;
$header = trim($header);
$name = strtolower($header);
if (!is_array($value)) {
$new->headers[$name] = array(trim($value));
} else {
$new->headers[$name] = $value;
foreach ($new->headers[$name] as &$v) {
$v = trim($v);
}
}
// Remove the header lines.
foreach (array_keys($new->headerLines) as $key) {
if (strtolower($key) === $name) {
unset($new->headerLines[$key]);
}
}
// Add the header line.
$new->headerLines[$header] = $new->headers[$name];
return $new;
}
public function withAddedHeader($header, $value)
{
if (!$this->hasHeader($header)) {
return $this->withHeader($header, $value);
}
$header = trim($header);
$name = strtolower($header);
$value = (array) $value;
foreach ($value as &$v) {
$v = trim($v);
}
$new = clone $this;
$new->headers[$name] = array_merge($new->headers[$name], $value);
$new->headerLines[$header] = array_merge($new->headerLines[$header], $value);
return $new;
}
public function withoutHeader($header)
{
if (!$this->hasHeader($header)) {
return $this;
}
$new = clone $this;
$name = strtolower($header);
unset($new->headers[$name]);
foreach (array_keys($new->headerLines) as $key) {
if (strtolower($key) === $name) {
unset($new->headerLines[$key]);
}
}
return $new;
}
public function getBody()
{
if (!$this->stream) {
$this->stream = stream_for('');
}
return $this->stream;
}
public function withBody(StreamInterface $body)
{
if ($body === $this->stream) {
return $this;
}
$new = clone $this;
$new->stream = $body;
return $new;
}
protected function setHeaders(array $headers)
{
$this->headerLines = $this->headers = array();
foreach ($headers as $header => $value) {
$header = trim($header);
$name = strtolower($header);
if (!is_array($value)) {
$value = trim($value);
$this->headers[$name][] = $value;
$this->headerLines[$header][] = $value;
} else {
foreach ($value as $v) {
$v = trim($v);
$this->headers[$name][] = $v;
$this->headerLines[$header][] = $v;
}
}
}
}
}
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