mime.inc.php
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<?php
/**
* $Id$
*
* KnowledgeTree Open Source Edition
* Document Management Made Simple
* Copyright (C) 2004 - 2008 The Jam Warehouse Software (Pty) Limited
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License version 3 as published by the
* Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can contact The Jam Warehouse Software (Pty) Limited, Unit 1, Tramber Place,
* Blake Street, Observatory, 7925 South Africa. or email info@knowledgetree.com.
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU General Public License version 3.
*
* In accordance with Section 7(b) of the GNU General Public License version 3,
* these Appropriate Legal Notices must retain the display of the "Powered by
* KnowledgeTree" logo and retain the original copyright notice. If the display of the
* logo is not reasonably feasible for technical reasons, the Appropriate Legal Notices
* must display the words "Powered by KnowledgeTree" and retain the original
* copyright notice.
* Contributor( s): ______________________________________
*
*/
/**
* This is a temporary location for these functions.
*/
class KTMime {
/**
* Get the mime type primary key for a specific mime type
*
* @param string detected mime type
* @param string filename
* @return int mime type primary key if found, else default mime type primary key (text/plain)
*/
function getMimeTypeID($sMimeType, $sFileName) {
global $default;
$sTable = KTUtil::getTableName('mimetypes');
// check by file extension
$sExtension = KTMime::stripAllButExtension($sFileName);
$res = DBUtil::getOneResultKey(array("SELECT id FROM " . $sTable . " WHERE LOWER(filetypes) = ?", array($sExtension)),'id');
if (PEAR::isError($res) || empty($res))
{
; // pass ?!
}
else {
return $res;
}
// get the mime type id
if (isset($sMimeType)) {
$res = DBUtil::getResultArray(array("SELECT id FROM " . $sTable . " WHERE mimetypes = ?", array($sMimeType)));
if (PEAR::isError($res)) {
; // pass ?!
}
if (count($res) != 0) {
return $res[0]['id'];
}
}
//otherwise return the default mime type
return KTMime::getDefaultMimeTypeID();
}
/**
* Get the default mime type, which is application/octet-stream
*
* @return int default mime type
*
*/
function getDefaultMimeTypeID() {
$sTable = KTUtil::getTableName('mimetypes');
$sQuery = "SELECT id FROM " . $sTable . " WHERE mimetypes = 'application/octet-stream'";
$aQuery = array($sQuery, array());
$res = DBUtil::getResultArray($aQuery);
if (PEAR::isError($res)) {
return $res;
} else {
return $res[0]['id'];
}
}
function getMimeTypeName($iMimeTypeID) {
$sTable = KTUtil::getTableName('mimetypes');
$sQuery = "SELECT mimetypes FROM " . $sTable . " WHERE id = ?";
$aQuery = array($sQuery, array($iMimeTypeID));
$res = DBUtil::getResultArray($aQuery);
if (PEAR::isError($res)) {
return $res;
} else if (count($res) != 0){
return $res[0]['mimetypes'];
}
return "application/octet-stream";
}
function getFriendlyNameForString($sMimeType) {
$sTable = KTUtil::getTableName('mimetypes');
$sQuery = "SELECT friendly_name, filetypes FROM " . $sTable . " WHERE mimetypes = ?";
$aQuery = array($sQuery, array($sMimeType));
$res = DBUtil::getResultArray($aQuery);
if (PEAR::isError($res)) {
return $res;
} else if (count($res) != 0){
$friendly_name = $res[0]['friendly_name'];
if (!empty($friendly_name)) {
return _kt($friendly_name);
} else {
return sprintf(_kt('%s File'), strtoupper($res[0]['filetypes']));
}
}
return _kt('Unknown Type');
}
/**
* Try well-defined methods for getting the MIME type for a file on disk.
* First try PECL's Fileinfo library, then try mime_content_type() builtin.
* If neither are available, returns NULL.
*
* @param string file on disk
* @return string mime time for given filename, or NULL
*/
function getMimeTypeFromFile($sFileName) {
if (extension_loaded('fileinfo')) {
$oKTConfig =& KTConfig::getSingleton();
$magicDatabase = $oKTConfig->get('magicDatabase', '/usr/share/file/magic');
$res = finfo_open(FILEINFO_MIME, $magicDatabase);
$sType = finfo_file($res, $sFileName);
}
if (!$sType) {
if (file_exists('/usr/bin/file')) {
$aCmd = array('/usr/bin/file', '-bi', $sFileName);
$sCmd = KTUtil::safeShellString($aCmd);
$sPossibleType = @exec($sCmd);
if (preg_match('#^[^/]+/[^/*]+$#', $sPossibleType)) {
$sType = $sPossibleType;
}
}
}
if ($sType) {
return preg_replace('/;.*$/', '', $sType);
}
return null;
}
function getIconPath($iMimeTypeId) {
$cached = KTUtil::arrayGet($GLOBALS['_KT_icon_path_cache'], $iMimeTypeId);
if (!empty($cached)) {
return $cached;
}
$GLOBALS['_KT_icon_path_cache'][$iMimeTypeId] = KTMime::_getIconPath($iMimeTypeId);
return $GLOBALS['_KT_icon_path_cache'][$iMimeTypeId];
}
function _getIconPath($iMimeTypeId) {
$sQuery = 'SELECT icon_path FROM mime_types WHERE id = ?';
$res = DBUtil::getOneResult(array($sQuery, array($iMimeTypeId)));
if ($res['icon_path'] !== null) {
return $res['icon_path'];
} else {
return 'unspecified_type';
}
}
function getAllMimeTypes($sAdditional = '') {
$sTable = KTUtil::getTableName('mimetypes');
$aQuery = array("SELECT id, mimetypes FROM " . $sTable . ' ' .$sAdditional, array());
$res = DBUtil::getResultArray($aQuery);
return $res;
}
/**
* Strip all but the extension from a file. For instance, input of
* 'foo.tif' would return 'tif'.
*
* @param string filename
* @return string extension for given file, without filename itself
*/
function stripAllButExtension($sFileName) {
return strtolower(substr($sFileName, strrpos($sFileName, ".")+1, strlen($sFileName) - strrpos($sFileName, ".")));
}
/**
* getAllMimeTypesInformation is a staic function used to get a fuller set of
* information on the mime types held in the database.
*
*/
function getAllMimeTypesInformation()
{
$sTable = KTUtil::getTableName('mimetypes');
$aQuery = array('SELECT MT.id, MT.filetypes, MT.mimetypes, MT.icon_path, MT.friendly_name, ME.name as extractor FROM '
. $sTable .' MT LEFT JOIN mime_extractors ME ON(MT.extractor_id = ME.id) ORDER BY MT.filetypes', array());
$res = DBUtil::getResultArray($aQuery);
return $res;
}
/**
* get all information on all the extractors in the database
*
*/
function getMimeExtractorInformation()
{
$aQuery = array('SELECT id, name, active FROM mime_extractors ORDER BY name', array());
$res = DBUtil::getResultArray($aQuery);
return $res;
}
/**
*give the mimetype name and get the friendly names and the extensions
*
*/
function getFriendlyNameAndExtension($sMimeType)
{
$sTable = KTUtil::getTableName('mimetypes');
$sQuery = "SELECT friendly_name, filetypes FROM " . $sTable . " WHERE mimetypes = ?";
$aQuery = array($sQuery, array($sMimeType));
$res = DBUtil::getResultArray($aQuery);
return $res;
}
}
$_KT_icon_path_cache = array();