mime.inc.php
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<?php
/**
* $Id$
*
* The contents of this file are subject to the KnowledgeTree Public
* License Version 1.1.2 ("License"); You may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.knowledgetree.com/KPL
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
* See the License for the specific language governing rights and
* limitations under the License.
*
* All copies of the Covered Code must include on each user interface screen:
* (i) the "Powered by KnowledgeTree" logo and
* (ii) the KnowledgeTree copyright notice
* in the same form as they appear in the distribution. See the License for
* requirements.
*
* The Original Code is: KnowledgeTree Open Source
*
* The Initial Developer of the Original Code is The Jam Warehouse Software
* (Pty) Ltd, trading as KnowledgeTree.
* Portions created by The Jam Warehouse Software (Pty) Ltd are Copyright
* (C) 2007 The Jam Warehouse Software (Pty) Ltd;
* All Rights Reserved.
* 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) {
$sTable = KTUtil::getTableName('mimetypes');
$bOfficeDocument = false;
// application/msword seems to be set by all Office documents
if ($sMimeType == "application/msword") {
$bOfficeDocument = true;
}
if ($bOfficeDocument || (!$sMimeType)) {
// check by file extension
$sExtension = KTMime::stripAllButExtension($sFileName);
$res = DBUtil::getResultArray(array("SELECT id FROM " . $sTable . " WHERE LOWER(filetypes) = ?", array($sExtension)));
if (PEAR::isError($res)) {
; // pass ?!
}
if (count($res) != 0) {
return $res[0]['id'];
}
}
// get the mime type id
if (isset($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')) {
$res = finfo_open(FILEINFO_MIME);
$sType = finfo_file($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, ".")));
}
}
$_KT_icon_path_cache = array();