function testMimeTypeMatch()
{
$this->assertEquals('text/html', mimeTypeMatch('text/html', array('application/xhtml+xml' => 1.0, 'text/html' => 0.7, 'text/plain' => 0.3)));
$this->assertEquals('text/*', mimeTypeMatch('text/html', array('image/*' => 1.0, 'text/*' => 0.5)));
$this->assertEquals('*/*', mimeTypeMatch('text/html', array('*/*' => 1.0)));
$this->assertNull(mimeTypeMatch('text/html', array('image/png' => 1.0, 'image/svg+xml' => 0.5)));
}
/**
* Returns the 'best' match between a client's requested internet media types
* and the server's list of available types. Each list should be an associative
* array of type to preference (preference is a float between 0.0 and 1.0).
* Wildcards in the types are acceptable.
*
* @param array $cprefs Client's acceptable type list
* @param array $sprefs Server's offered types
* @return string
*
* @todo FIXME: Doesn't handle params like 'text/plain; charset=UTF-8'
* XXX: generalize to negotiate other stuff
*/
function wfNegotiateType($cprefs, $sprefs)
{
$combine = array();
foreach (array_keys($sprefs) as $type) {
$parts = explode('/', $type);
if ($parts[1] != '*') {
$ckey = mimeTypeMatch($type, $cprefs);
if ($ckey) {
$combine[$type] = $sprefs[$type] * $cprefs[$ckey];
}
}
}
foreach (array_keys($cprefs) as $type) {
$parts = explode('/', $type);
if ($parts[1] != '*' && !array_key_exists($type, $sprefs)) {
$skey = mimeTypeMatch($type, $sprefs);
if ($skey) {
$combine[$type] = $sprefs[$skey] * $cprefs[$type];
}
}
}
$bestq = 0;
$besttype = null;
foreach (array_keys($combine) as $type) {
if ($combine[$type] > $bestq) {
$besttype = $type;
$bestq = $combine[$type];
}
}
return $besttype;
}
