/**
* Autodetect a file's MIME-type
*
* This function may be called staticly.
*
* @param string $file Path to the file to get the type of
* @param bool $params Append MIME parameters if true
* @return string $file's MIME-type on success, PEAR_Error otherwise
* @since 1.0.0beta1
* @static
*/
function autoDetect($file, $params = false)
{
@(include_once 'System/Command.php');
if (function_exists('mime_content_type')) {
$type = mime_content_type($file);
} else {
if (class_exists('System_Command')) {
$type = MIME_Type::_fileAutoDetect($file);
} else {
return PEAR::raiseError("Sorry, can't autodetect; you need the mime_magic extension or System_Command and 'file' installed to use this function.");
}
}
// _fileAutoDetect() may have returned an error.
if (PEAR::isError($type)) {
return $type;
}
// Don't return an empty string
if (!$type || !strlen($type)) {
return PEAR::raiseError("Sorry, couldn't determine file type.");
}
// Strip parameters if present & requested
if (MIME_Type::hasParameters($type) && !$params) {
$type = MIME_Type::stripParameters($type);
}
return $type;
}
/**
*
*/
public function testStripParameters()
{
$this->assertEquals('text/plain', MIME_Type::stripParameters('text/plain'));
$this->assertEquals('text/plain', MIME_Type::stripParameters('text/plain;asd=def'));
$this->assertEquals('text/plain', MIME_Type::stripParameters('text/plain;asd=def;ghj=jkl'));
}
/**
* Handles a detected MIME type and modifies it if necessary.
*
* @param string $type MIME Type of a file
* @param bool $params Append MIME parameters if true
*
* @return string $file's MIME-type on success, PEAR_Error otherwise
* @static
*/
function _handleDetection($type, $params)
{
// _fileAutoDetect() may have returned an error.
if (PEAR::isError($type)) {
return $type;
}
// Don't return an empty string
if (!$type || !strlen($type)) {
return PEAR::raiseError("Sorry, couldn't determine file type.");
}
// Strip parameters if present & requested
if (MIME_Type::hasParameters($type) && !$params) {
$type = MIME_Type::stripParameters($type);
}
return $type;
}
/**
* Autodetect a file's MIME-type
*
* This function may be called staticly.
*
* @param string $file Path to the file to get the type of
* @param string $custom_mime An optional custom 'default' value, mostly used for the filetype sent by the users' browser
* @param bool $params Append MIME parameters if true
* @return string $file's MIME-type on success, false boolean otherwise
* @since 1.0.0beta1
* @static
*/
function autoDetect($file, $custom_mime = null, $custom_ext = null, $params = false)
{
if (function_exists('mime_content_type')) {
$type = mime_content_type($file);
if ($type == "application/octet-stream" || $type == "application/unknown") {
if (!empty($custom_mime)) {
$type = $custom_mime;
} elseif (!empty($custom_ext)) {
$type = MIME_Helper::convertExtensionToMime($custom_ext);
}
}
} elseif (!empty($custom_mime)) {
$type = $custom_mime;
} else {
$type = MIME_Type::_fileAutoDetect($file);
}
// _fileAutoDetect() may have returned an error.
if ($type === false) {
return $type;
}
//return PEAR::raiseError("Sorry, can't autodetect; you need the mime_magic extension or System_Command and 'file' installed to use this function.");
if (!MIME_Helper::convertMimeToExtension($type)) {
$type = MIME_Helper::convertExtensionToMime($custom_mime);
}
// flv (Flash Video format) files need exceptional handling (for now I'll provide a fictional mimetype)
if ($custom_ext == "flv") {
$type = "video/x-flv";
}
// Don't return an empty string
if (!$type || !strlen($type)) {
//return PEAR::raiseError("Sorry, couldn't determine file type.");
return false;
}
// Strip parameters if present & requested
if (MIME_Type::hasParameters($type) && !$params) {
$type = MIME_Type::stripParameters($type);
}
return $type;
}
