mirror of
https://git.code.sf.net/p/seeddms/code
synced 2025-05-17 23:21:19 +00:00
new version 1.2.0
addѕ previewer which converts documents to pdf instead of png
This commit is contained in:
Uwe Steinmann
parent
674de91419
commit
531b645a2d
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@ -16,9 +16,19 @@
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// along with this program; if not, write to the Free Software
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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/**
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* @uses Preview/Base.php
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*/
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require_once('Preview/Base.php');
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/**
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/**
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* @uses Preview/Previewer.php
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* @uses Preview/Previewer.php
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*/
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*/
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require_once('Preview/Previewer.php');
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require_once('Preview/Previewer.php');
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/**
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* @uses Preview/PdfPreviewer.php
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*/
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require_once('Preview/PdfPreviewer.php');
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?>
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?>
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120
SeedDMS_Preview/Preview/Base.php
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120
SeedDMS_Preview/Preview/Base.php
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@ -0,0 +1,120 @@
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<?php
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/**
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* Implementation of preview base
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*
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* @category DMS
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* @package SeedDMS_Preview
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* @license GPL 2
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* @version @version@
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* @author Uwe Steinmann <uwe@steinmann.cx>
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* @copyright Copyright (C) 2010, Uwe Steinmann
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* @version Release: @package_version@
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*/
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/**
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* Class for managing creation of preview images for documents.
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*
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* @category DMS
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* @package SeedDMS_Preview
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* @version @version@
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* @author Uwe Steinmann <uwe@steinmann.cx>
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* @copyright Copyright (C) 2011, Uwe Steinmann
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* @version Release: @package_version@
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*/
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class SeedDMS_Preview_Base {
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/**
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* @var string $cacheDir location in the file system where all the
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* cached data like thumbnails are located. This should be an
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* absolute path.
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* @access public
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*/
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public $previewDir;
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/**
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* @var array $converters list of mimetypes and commands for converting
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* file into preview image
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* @access protected
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*/
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protected $converters;
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/**
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* @var integer $timeout maximum time for execution of external commands
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* @access protected
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*/
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protected $timeout;
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function __construct($previewDir, $timeout=5) { /* {{{ */
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if(!is_dir($previewDir)) {
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if (!SeedDMS_Core_File::makeDir($previewDir)) {
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$this->previewDir = '';
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} else {
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$this->previewDir = $previewDir;
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}
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} else {
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$this->previewDir = $previewDir;
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}
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$this->timeout = intval($timeout);
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} /* }}} */
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static function execWithTimeout($cmd, $timeout=5) { /* {{{ */
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$descriptorspec = array(
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0 => array("pipe", "r"),
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1 => array("pipe", "w"),
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2 => array("pipe", "w")
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);
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$pipes = array();
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$timeout += time();
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$process = proc_open($cmd, $descriptorspec, $pipes);
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if (!is_resource($process)) {
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throw new Exception("proc_open failed on: " . $cmd);
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}
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$output = '';
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$timeleft = $timeout - time();
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$read = array($pipes[1]);
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$write = NULL;
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$exeptions = NULL;
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do {
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stream_select($read, $write, $exeptions, $timeleft, 200000);
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if (!empty($read)) {
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$output .= fread($pipes[1], 8192);
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}
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$timeleft = $timeout - time();
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} while (!feof($pipes[1]) && $timeleft > 0);
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if ($timeleft <= 0) {
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proc_terminate($process);
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throw new Exception("command timeout on: " . $cmd);
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} else {
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return $output;
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}
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} /* }}} */
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/**
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* Set a list of converters
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*
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* Merges the list of passed converters with the already existing ones.
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* Existing converters will be overwritten.
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*
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* @param array list of converters. The key of the array contains the mimetype
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* and the value is the command to be called for creating the preview
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*/
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function setConverters($arr) { /* {{{ */
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$this->converters = array_merge($arr, $this->converters);
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} /* }}} */
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/**
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* Check if converter for a given mimetype is set
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*
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* @param string $mimetype
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* @return boolean true if converter exists, otherwise false
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*/
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function hasConverter($mimetype) { /* {{{ */
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return array_key_exists($mimetype, $this->converters);
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} /* }}} */
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}
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276
SeedDMS_Preview/Preview/PdfPreviewer.php
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276
SeedDMS_Preview/Preview/PdfPreviewer.php
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<?php
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/**
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* Implementation of pdf preview documents
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*
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* @category DMS
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* @package SeedDMS_Preview
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* @license GPL 2
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* @version @version@
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* @author Uwe Steinmann <uwe@steinmann.cx>
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* @copyright Copyright (C) 2010, Uwe Steinmann
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* @version Release: @package_version@
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*/
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/**
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* Class for managing creation of pdf preview for documents.
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*
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* @category DMS
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* @package SeedDMS_Preview
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* @version @version@
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* @author Uwe Steinmann <uwe@steinmann.cx>
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* @copyright Copyright (C) 2011, Uwe Steinmann
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* @version Release: @package_version@
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*/
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class SeedDMS_Preview_PdfPreviewer extends SeedDMS_Preview_Base {
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function __construct($previewDir, $timeout=5) { /* {{{ */
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parent::__construct($previewDir, $timeout);
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$this->converters = array(
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'application/vnd.openxmlformats-officedocument.wordprocessingml.document' => "unoconv -d document -f pdf --stdout -v '%f' > '%o'",
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'application/vnd.oasis.opendocument.text' => "unoconv -d document -f pdf --stdout -v '%f' > '%o'",
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'text/rtf' => "unoconv -d document -f pdf --stdout -v '%f' > '%o'",
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'application/msword' => "unoconv -d document -f pdf --stdout -v '%f' > '%o'",
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);
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} /* }}} */
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/**
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* Return the physical filename of the preview image on disk
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*
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* @param object $object document content or document file
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* @return string file name of preview image
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*/
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protected function getFileName($object) { /* {{{ */
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if(!$object)
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return false;
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$document = $object->getDocument();
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$dir = $this->previewDir.'/'.$document->getDir();
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switch(get_class($object)) {
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case "SeedDMS_Core_DocumentContent":
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$target = $dir.'p'.$object->getVersion();
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break;
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case "SeedDMS_Core_DocumentFile":
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$target = $dir.'f'.$object->getID();
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break;
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default:
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return false;
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}
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return $target;
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} /* }}} */
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/**
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* Create a pdf preview for a given file
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*
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* This method creates a preview in pdf format for a regular file
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* in the file system and stores the result in the directory $dir relative
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* to the configured preview directory. The filename of the resulting preview
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* image is either $target.pdf (if set) or md5($infile).pdf.
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* The $mimetype is used to select the propper conversion programm.
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* An already existing pdf preview is replaced.
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*
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* @param string $infile name of input file including full path
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* @param string $dir directory relative to $this->previewDir
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* @param string $mimetype MimeType of input file
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* @param string $target optional name of preview image (without extension)
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* @return boolean true on success, false on failure
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*/
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public function createRawPreview($infile, $dir, $mimetype, $target='') { /* {{{ */
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if(!$this->previewDir)
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return false;
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if(!is_dir($this->previewDir.'/'.$dir)) {
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if (!SeedDMS_Core_File::makeDir($this->previewDir.'/'.$dir)) {
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return false;
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}
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}
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if(!file_exists($infile))
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return false;
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if(!$target)
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$target = $this->previewDir.$dir.md5($infile);
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if($target != '' && (!file_exists($target.'.pdf') || filectime($target.'.pdf') < filectime($infile))) {
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$cmd = '';
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if(isset($this->converters[$mimetype])) {
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$cmd = str_replace(array('%f', '%o'), array($infile, $target.'.pdf'), $this->converters[$mimetype]);
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}
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if($cmd) {
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try {
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self::execWithTimeout($cmd, $this->timeout);
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} catch(Exception $e) {
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}
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}
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return true;
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}
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return true;
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} /* }}} */
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/**
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* Create preview image
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*
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* This function creates a preview image for the given document
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* content or document file. It internally uses
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* {@link SeedDMS_Preview::createRawPreview()}. The filename of the
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* preview image is created by {@link SeedDMS_Preview_Previewer::getFileName()}
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*
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* @param object $object instance of SeedDMS_Core_DocumentContent
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* or SeedDMS_Core_DocumentFile
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* @return boolean true on success, false on failure
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*/
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public function createPreview($object) { /* {{{ */
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if(!$object)
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return false;
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$document = $object->getDocument();
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$file = $document->_dms->contentDir.$object->getPath();
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$target = $this->getFileName($object);
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return $this->createRawPreview($file, $document->getDir(), $object->getMimeType(), $target);
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} /* }}} */
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/**
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* Check if a preview image already exists.
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*
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* This function is a companion to {@link SeedDMS_Preview_Previewer::createRawPreview()}.
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*
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* @param string $infile name of input file including full path
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* @param string $dir directory relative to $this->previewDir
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* @return boolean true if preview exists, otherwise false
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*/
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public function hasRawPreview($infile, $dir) { /* {{{ */
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if(!$this->previewDir)
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return false;
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$target = $this->previewDir.$dir.md5($infile);
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if($target !== false && file_exists($target.'.pdf') && filectime($target.'.pdf') >= filectime($infile)) {
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return true;
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}
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return false;
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} /* }}} */
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/**
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* Check if a preview image already exists.
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*
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* This function is a companion to {@link SeedDMS_Preview_Previewer::createPreview()}.
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*
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* @param object $object instance of SeedDMS_Core_DocumentContent
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* or SeedDMS_Core_DocumentFile
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* @return boolean true if preview exists, otherwise false
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*/
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public function hasPreview($object) { /* {{{ */
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if(!$object)
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return false;
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if(!$this->previewDir)
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return false;
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$target = $this->getFileName($object);
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if($target !== false && file_exists($target.'.pdf') && filectime($target.'.pdf') >= $object->getDate()) {
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return true;
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}
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return false;
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} /* }}} */
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/**
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* Return a preview image.
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*
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* This function returns the content of a preview image if it exists..
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*
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* @param string $infile name of input file including full path
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* @param string $dir directory relative to $this->previewDir
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* @return boolean/string image content if preview exists, otherwise false
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*/
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public function getRawPreview($infile, $dir) { /* {{{ */
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if(!$this->previewDir)
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return false;
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$target = $this->previewDir.$dir.md5($infile);
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if($target && file_exists($target.'.pdf')) {
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readfile($target.'.pdf');
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}
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} /* }}} */
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/**
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* Return a preview image.
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*
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* This function returns the content of a preview image if it exists..
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*
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* @param object $object instance of SeedDMS_Core_DocumentContent
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* or SeedDMS_Core_DocumentFile
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* @return boolean/string image content if preview exists, otherwise false
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*/
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public function getPreview($object) { /* {{{ */
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if(!$this->previewDir)
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return false;
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$target = $this->getFileName($object);
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if($target && file_exists($target.'.pdf')) {
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readfile($target.'.pdf');
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}
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} /* }}} */
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/**
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* Return file size preview image.
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*
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* @param object $object instance of SeedDMS_Core_DocumentContent
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* or SeedDMS_Core_DocumentFile
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* @return boolean/integer size of preview image or false if image
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* does not exist
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*/
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public function getFilesize($object) { /* {{{ */
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$target = $this->getFileName($object);
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if($target && file_exists($target.'.pdf')) {
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return(filesize($target.'.pdf'));
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} else {
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return false;
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}
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} /* }}} */
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/**
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* Delete preview image.
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*
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* @param object $object instance of SeedDMS_Core_DocumentContent
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* or SeedDMS_Core_DocumentFile
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* @return boolean true if deletion succeded or false if file does not exist
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*/
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public function deletePreview($object) { /* {{{ */
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if(!$this->previewDir)
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return false;
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$target = $this->getFileName($object);
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if($target && file_exists($target.'.pdf')) {
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return(unlink($target.'.pdf'));
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} else {
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return false;
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}
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} /* }}} */
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static function recurseRmdir($dir) {
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$files = array_diff(scandir($dir), array('.','..'));
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foreach ($files as $file) {
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||||||
|
(is_dir("$dir/$file")) ? SeedDMS_Preview_Previewer::recurseRmdir("$dir/$file") : unlink("$dir/$file");
|
||||||
|
}
|
||||||
|
return rmdir($dir);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Delete all preview images belonging to a document
|
||||||
|
*
|
||||||
|
* This function removes the preview images of all versions and
|
||||||
|
* files of a document including the directory. It actually just
|
||||||
|
* removes the directory for the document in the cache.
|
||||||
|
*
|
||||||
|
* @param object $document instance of SeedDMS_Core_Document
|
||||||
|
* @return boolean true if deletion succeded or false if file does not exist
|
||||||
|
*/
|
||||||
|
public function deleteDocumentPreviews($document) { /* {{{ */
|
||||||
|
if(!$this->previewDir)
|
||||||
|
return false;
|
||||||
|
|
||||||
|
$dir = $this->previewDir.'/'.$document->getDir();
|
||||||
|
if(file_exists($dir) && is_dir($dir)) {
|
||||||
|
return SeedDMS_Preview_Previewer::recurseRmdir($dir);
|
||||||
|
} else {
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
} /* }}} */
|
||||||
|
}
|
||||||
|
?>
|
||||||
|
|
@ -22,45 +22,15 @@
|
||||||
* @copyright Copyright (C) 2011, Uwe Steinmann
|
* @copyright Copyright (C) 2011, Uwe Steinmann
|
||||||
* @version Release: @package_version@
|
* @version Release: @package_version@
|
||||||
*/
|
*/
|
||||||
class SeedDMS_Preview_Previewer {
|
class SeedDMS_Preview_Previewer extends SeedDMS_Preview_Base {
|
||||||
/**
|
|
||||||
* @var string $cacheDir location in the file system where all the
|
|
||||||
* cached data like thumbnails are located. This should be an
|
|
||||||
* absolute path.
|
|
||||||
* @access public
|
|
||||||
*/
|
|
||||||
public $previewDir;
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* @var integer $width maximum width/height of resized image
|
* @var integer $width maximum width/height of resized image
|
||||||
* @access protected
|
* @access protected
|
||||||
*/
|
*/
|
||||||
protected $width;
|
protected $width;
|
||||||
|
|
||||||
/**
|
|
||||||
* @var array $converters list of mimetypes and commands for converting
|
|
||||||
* file into preview image
|
|
||||||
* @access protected
|
|
||||||
*/
|
|
||||||
protected $converters;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @var integer $timeout maximum time for execution of external commands
|
|
||||||
* @access protected
|
|
||||||
*/
|
|
||||||
protected $timeout;
|
|
||||||
|
|
||||||
function __construct($previewDir, $width=40, $timeout=5) { /* {{{ */
|
function __construct($previewDir, $width=40, $timeout=5) { /* {{{ */
|
||||||
if(!is_dir($previewDir)) {
|
parent::__construct($previewDir, $timeout);
|
||||||
if (!SeedDMS_Core_File::makeDir($previewDir)) {
|
|
||||||
$this->previewDir = '';
|
|
||||||
} else {
|
|
||||||
$this->previewDir = $previewDir;
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
$this->previewDir = $previewDir;
|
|
||||||
}
|
|
||||||
$this->width = intval($width);
|
|
||||||
$this->converters = array(
|
$this->converters = array(
|
||||||
'image/png' => "convert -resize %wx '%f' '%o'",
|
'image/png' => "convert -resize %wx '%f' '%o'",
|
||||||
'image/gif' => "convert -resize %wx '%f' '%o'",
|
'image/gif' => "convert -resize %wx '%f' '%o'",
|
||||||
|
|
@ -72,56 +42,7 @@ class SeedDMS_Preview_Previewer {
|
||||||
'application/postscript' => "convert -density 100 -resize %wx '%f[0]' '%o'",
|
'application/postscript' => "convert -density 100 -resize %wx '%f[0]' '%o'",
|
||||||
'application/x-compressed-tar' => "tar tzvf '%f' | convert -density 100 -resize %wx text:-[0] '%o",
|
'application/x-compressed-tar' => "tar tzvf '%f' | convert -density 100 -resize %wx text:-[0] '%o",
|
||||||
);
|
);
|
||||||
$this->timeout = intval($timeout);
|
$this->width = intval($width);
|
||||||
} /* }}} */
|
|
||||||
|
|
||||||
static function execWithTimeout($cmd, $timeout=5) { /* {{{ */
|
|
||||||
$descriptorspec = array(
|
|
||||||
0 => array("pipe", "r"),
|
|
||||||
1 => array("pipe", "w"),
|
|
||||||
2 => array("pipe", "w")
|
|
||||||
);
|
|
||||||
$pipes = array();
|
|
||||||
|
|
||||||
$timeout += time();
|
|
||||||
$process = proc_open($cmd, $descriptorspec, $pipes);
|
|
||||||
if (!is_resource($process)) {
|
|
||||||
throw new Exception("proc_open failed on: " . $cmd);
|
|
||||||
}
|
|
||||||
|
|
||||||
$output = '';
|
|
||||||
$timeleft = $timeout - time();
|
|
||||||
$read = array($pipes[1]);
|
|
||||||
$write = NULL;
|
|
||||||
$exeptions = NULL;
|
|
||||||
do {
|
|
||||||
stream_select($read, $write, $exeptions, $timeleft, 200000);
|
|
||||||
|
|
||||||
if (!empty($read)) {
|
|
||||||
$output .= fread($pipes[1], 8192);
|
|
||||||
}
|
|
||||||
$timeleft = $timeout - time();
|
|
||||||
} while (!feof($pipes[1]) && $timeleft > 0);
|
|
||||||
|
|
||||||
if ($timeleft <= 0) {
|
|
||||||
proc_terminate($process);
|
|
||||||
throw new Exception("command timeout on: " . $cmd);
|
|
||||||
} else {
|
|
||||||
return $output;
|
|
||||||
}
|
|
||||||
} /* }}} */
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set a list of converters
|
|
||||||
*
|
|
||||||
* Merges the list of passed converters with the already existing ones.
|
|
||||||
* Existing converters will be overwritten.
|
|
||||||
*
|
|
||||||
* @param array list of converters. The key of the array contains the mimetype
|
|
||||||
* and the value is the command to be called for creating the preview
|
|
||||||
*/
|
|
||||||
function setConverters($arr) { /* {{{ */
|
|
||||||
$this->converters = array_merge($arr, $this->converters);
|
|
||||||
} /* }}} */
|
} /* }}} */
|
||||||
|
|
||||||
/**
|
/**
|
||||||
|
|
|
||||||
|
|
@ -11,11 +11,11 @@
|
||||||
<email>uwe@steinmann.cx</email>
|
<email>uwe@steinmann.cx</email>
|
||||||
<active>yes</active>
|
<active>yes</active>
|
||||||
</lead>
|
</lead>
|
||||||
<date>2016-04-26</date>
|
<date>2016-11-07</date>
|
||||||
<time>15:17:11</time>
|
<time>15:17:11</time>
|
||||||
<version>
|
<version>
|
||||||
<release>1.1.9</release>
|
<release>1.2.0</release>
|
||||||
<api>1.1.9</api>
|
<api>1.2.0</api>
|
||||||
</version>
|
</version>
|
||||||
<stability>
|
<stability>
|
||||||
<release>stable</release>
|
<release>stable</release>
|
||||||
|
|
@ -23,11 +23,7 @@
|
||||||
</stability>
|
</stability>
|
||||||
<license uri="http://opensource.org/licenses/gpl-license">GPL License</license>
|
<license uri="http://opensource.org/licenses/gpl-license">GPL License</license>
|
||||||
<notes>
|
<notes>
|
||||||
add more documentation
|
add new previewer which converts document to pdf instead of png
|
||||||
finish deletePreview()
|
|
||||||
add new method deleteDocumentPreviews()
|
|
||||||
fix calculation of timeout (Bug #269)
|
|
||||||
check if cache dir exists before deleting it in deleteDocumentPreviews()
|
|
||||||
</notes>
|
</notes>
|
||||||
<contents>
|
<contents>
|
||||||
<dir baseinstalldir="SeedDMS" name="/">
|
<dir baseinstalldir="SeedDMS" name="/">
|
||||||
|
|
@ -216,5 +212,25 @@ set last parameter of stream_select() to 200000 micro sec. in case the timeout i
|
||||||
pass variables to stream_select (required by php7)
|
pass variables to stream_select (required by php7)
|
||||||
</notes>
|
</notes>
|
||||||
</release>
|
</release>
|
||||||
|
<release>
|
||||||
|
<date>2016-04-26</date>
|
||||||
|
<time>15:17:11</time>
|
||||||
|
<version>
|
||||||
|
<release>1.1.9</release>
|
||||||
|
<api>1.1.9</api>
|
||||||
|
</version>
|
||||||
|
<stability>
|
||||||
|
<release>stable</release>
|
||||||
|
<api>stable</api>
|
||||||
|
</stability>
|
||||||
|
<license uri="http://opensource.org/licenses/gpl-license">GPL License</license>
|
||||||
|
<notes>
|
||||||
|
add more documentation
|
||||||
|
finish deletePreview()
|
||||||
|
add new method deleteDocumentPreviews()
|
||||||
|
fix calculation of timeout (Bug #269)
|
||||||
|
check if cache dir exists before deleting it in deleteDocumentPreviews()
|
||||||
|
</notes>
|
||||||
|
</release>
|
||||||
</changelog>
|
</changelog>
|
||||||
</package>
|
</package>
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue
Block a user