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<?php
namespace Laminas\Mail\Header;
use Laminas\Mail\Headers;
use Laminas\Mime\Mime;
use function count;
use function explode;
use function implode;
use function in_array;
use function preg_match;
use function sprintf;
use function str_replace;
use function strtolower;
use function trim;
class ContentType implements UnstructuredInterface
{
/** @var string */
protected $type;
/**
* Header encoding
*
* @var string
*/
protected $encoding = 'ASCII';
/** @var array */
protected $parameters = [];
/**
* @param string $headerLine
* @return static
*/
public static function fromString($headerLine)
{
[$name, $value] = GenericHeader::splitHeaderLine($headerLine);
$value = HeaderWrap::mimeDecodeValue($value);
// check to ensure proper header type for this factory
if (! in_array(strtolower($name), ['contenttype', 'content_type', 'content-type'])) {
throw new Exception\InvalidArgumentException('Invalid header line for Content-Type string');
}
$value = str_replace(Headers::FOLDING, ' ', $value);
$parts = explode(';', $value, 2);
$header = new static();
$header->setType($parts[0]);
if (isset($parts[1])) {
$values = ListParser::parse(trim($parts[1]), [';', '=']);
$length = count($values);
for ($i = 0; $i < $length; $i += 2) {
$value = $values[$i + 1];
$value = trim($value, "'\" \t\n\r\0\x0B");
$header->addParameter($values[$i], $value);
}
}
return $header;
}
/**
* @return string
*/
public function getFieldName()
{
return 'Content-Type';
}
/**
* @inheritDoc
*/
public function getFieldValue($format = HeaderInterface::FORMAT_RAW)
{
$prepared = $this->type;
if (empty($this->parameters)) {
return $prepared;
}
$values = [$prepared];
foreach ($this->parameters as $attribute => $value) {
if (HeaderInterface::FORMAT_ENCODED === $format && ! Mime::isPrintable($value)) {
$this->encoding = 'UTF-8';
$value = HeaderWrap::wrap($value, $this);
$this->encoding = 'ASCII';
}
$values[] = sprintf('%s="%s"', $attribute, $value);
}
return implode(';' . Headers::FOLDING, $values);
}
/**
* @param string $encoding
* @return self
*/
public function setEncoding($encoding)
{
$this->encoding = $encoding;
return $this;
}
/**
* @return string
*/
public function getEncoding()
{
return $this->encoding;
}
/**
* @return string
*/
public function toString()
{
return 'Content-Type: ' . $this->getFieldValue(HeaderInterface::FORMAT_ENCODED);
}
/**
* Set the content type
*
* @param string $type
* @throws Exception\InvalidArgumentException
* @return ContentType
*/
public function setType($type)
{
if (! preg_match('/^[a-z-]+\/[a-z0-9.+-]+$/i', $type)) {
throw new Exception\InvalidArgumentException(sprintf(
'%s expects a value in the format "type/subtype"; received "%s"',
__METHOD__,
(string) $type
));
}
$this->type = $type;
return $this;
}
/**
* Retrieve the content type
*
* @return string
*/
public function getType()
{
return $this->type;
}
/**
* Add a parameter pair
*
* @param string $name
* @param string $value
* @return ContentType
* @throws Exception\InvalidArgumentException For parameter names that do not follow RFC 2822.
* @throws Exception\InvalidArgumentException For parameter values that do not follow RFC 2822.
*/
public function addParameter($name, $value)
{
$name = trim(strtolower($name));
$value = (string) $value;
if (! HeaderValue::isValid($name)) {
throw new Exception\InvalidArgumentException('Invalid content-type parameter name detected');
}
if (! HeaderWrap::canBeEncoded($value)) {
throw new Exception\InvalidArgumentException(
'Parameter value must be composed of printable US-ASCII or UTF-8 characters.'
);
}
$this->parameters[$name] = $value;
return $this;
}
/**
* Get all parameters
*
* @return array
*/
public function getParameters()
{
return $this->parameters;
}
/**
* Get a parameter by name
*
* @param string $name
* @return null|string
*/
public function getParameter($name)
{
$name = strtolower($name);
if (isset($this->parameters[$name])) {
return $this->parameters[$name];
}
return null;
}
/**
* Remove a named parameter
*
* @param string $name
* @return bool
*/
public function removeParameter($name)
{
$name = strtolower($name);
if (isset($this->parameters[$name])) {
unset($this->parameters[$name]);
return true;
}
return false;
}
}