/**
* Returns the quality of the supplied `$charset` argument. This method
* will automatically parse the `Accept-Charset` header if present and
* return the associated resolved quality value.
*
* // Accept-Charset: utf-8, utf-16; q=.8, iso-8859-1; q=.5
* $quality = $header->accepts_charset_at_quality('utf-8');
* // $quality = (float) 1
*
* @param string $charset charset to examine
* @return float the quality of the charset
* @since 3.2.0
*/
public function accepts_charset_at_quality($charset)
{
if ($this->_accept_charset === NULL) {
if ($this->offsetExists('Accept-Charset')) {
$charset_header = strtolower($this->offsetGet('Accept-Charset'));
$this->_accept_charset = HTTP_Header::parse_charset_header($charset_header);
} else {
$this->_accept_charset = HTTP_Header::parse_charset_header(NULL);
}
}
$charset = strtolower($charset);
if (isset($this->_accept_charset[$charset])) {
return $this->_accept_charset[$charset];
} elseif (isset($this->_accept_charset['*'])) {
return $this->_accept_charset['*'];
} elseif ($charset === 'iso-8859-1') {
return (double) 1;
}
return (double) 0;
}
/**
* Tests the `parse_charset_header` method parsed the Accept-Charset header
* correctly
*
* @dataProvider provider_parse_charset_header
*
* @param string $accept accept
* @param array $expected expected
* @return void
*/
public function test_parse_charset_header($accept, array $expected)
{
$this->assertSame($expected, HTTP_Header::parse_charset_header($accept));
}
