Source for file jResponseLatexToPdf.class.php
Documentation is available at jResponseLatexToPdf.class.php
- <?php
- /**
- * @package jelix
- * @subpackage core_response
- * @author Aubanel Monnier
- * @contributor Laurent Jouanneau, Thomas, Johannb
- * @copyright 2007 Aubanel Monnier, 2009 Thomas, 2009-2010 Laurent Jouanneau
- * @link http://aubanel.info
- * @licence GNU Lesser General Public Licence see LICENCE file or http://www.gnu.org/licenses/lgpl.html
- */
-
- /**
- * pdf response, generated from a latex content
- * @package jelix
- * @subpackage core_response
- * @since 1.0b2
- */
- class jResponseLatexToPdf extends jResponse {
- /**
- * @var string
- */
- protected $_type = 'ltx2pdf';
- /**
- * selector of the main template file
- * This template should contains the body content, and is used by the $body template engine
- * @var string
- */
- public $bodyTpl = '';
- /**
- * The template engine used to generate the content
- * @var jTpl
- */
- public $body = null;
- /**
- * Authors of the document
- * @var array
- */
- public $authors = array();
- /**
- * Document title
- * @var string
- */
- public $title = '';
- /**
- * Document date
- * @var string
- * @since 1.2
- */
- public $date = '\today';
-
- /**
- * Contains the list of commands to write in the preamble.
- * @var array
- */
- protected $_commands=array();
-
- /**
- * complete path to the pdflatex executable
- * @var string
- */
- public $pdflatexPath='pdflatex';
-
- /**
- * path to the cache directory.
- * default is directory responseLatexToPdf in temp directory
- * @since 1.0
- */
- public $cachePath= '';
-
- /**
- * Document file name
- * @var string
- * @since 1.2
- */
- public $outputFileName = 'document.pdf';
-
- /**
- * constructor;
- * setup the template engine
- */
- function __construct (){
- $this->cachePath = jApp::tempPath('responseLatexToPdf/');
- $this->body = new jTpl();
- parent::__construct();
- }
-
- /**
- * Add a command to the preamble, e.g. \documentclass[a4,11pt]{article}
- * @param string $command name of the command to add
- * @param string $argument argument of the command to add
- * @param array $options options of the command to add
- */
- public function addCommand($command, $argument, $options=array()){
- $cmd = '\\'.$command;
- if (count($options))
- $cmd.='['.join(',',$options).']';
- $this->_commands []= $cmd.'{'.$argument.'}';
- }
-
- /**
- * A list of commands that can be safely used as default, or as a template for the _commonProcess function
- * Tis function is called if the command stack is empty (useful to get quicly started)
- */
- public function addDefaultCommands(){
- $this->addCommand('documentclass', 'article', array('a4', '11pt'));
- $this->addCommand('usepackage', 'fontenc', array('T1'));
- $this->addCommand('usepackage', 'graphicx');
- $this->addCommand('usepackage', 'geometry', array('pdftex'));
- $this->addCommand('geometry', 'hmargin=1cm, vmargin=1cm');
- }
-
- /**
- * output the pdf content
- *
- * @return boolean true if the generated content is ok
- */
- function output(){
- $this->_commonProcess();
- if (count($this->_commands) <= 0) //No commands, likewise we need some...
- $this->addDefaultCommands();
-
- $data = join("\n", $this->_commands).'
- \begin{document}
- \title{'.$this->title.'}
- \author{';
- foreach ($this->authors as $a)
- $data.= $a.'\\\\'."\n";
- $data.= '}
- \date{'.$this->date.'}
- ';
- $data.=$this->body->fetch($this->bodyTpl);
- $data.= '
-
- \end{document}';
-
- $fbase='cache-'.md5($data);
-
- $texFile=$this->cachePath.$fbase.'.tex';
- $pdfFile=$this->cachePath.$fbase.'.pdf';
-
- if (! file_exists($pdfFile)){
- // Naïve cache: we have an md5 on the content of the tex file. If the pdf
- // corresponding to this content already exists, just serve it.
- // No managment of cache deletion :o/
- jFile::write($texFile, $data);
- $output=array();
- $retVal=1;
- exec($this->pdflatexPath.' --interaction batchmode --output-directory '.$this->cachePath.' '.$texFile, $output, $retval);
- if($retVal!=0){
- $outputStr=implode('<br />',$output);
- throw new jException('jelix~errors.ltx2pdf.exec',array($this->pdflatexPath, $outputStr));
- }
- }
- $this->_httpHeaders['Content-Type']='application/pdf';
- $this->_httpHeaders['Content-length']=@filesize($pdfFile);
- $this->_httpHeaders['Content-Disposition']='attachment; filename='.$this->outputFileName;
- $this->sendHttpHeaders();
-
- readfile($pdfFile);
- return true;
- }
-
- /**
- * The method you can overload in your inherited response
- * overload it if you want to add processes (additionnal commands, content etc..)
- * for all actions
- */
- protected function _commonProcess(){
-
- }
-
- /**
- * Clears the cache directory
- */
- public function clearCache(){
- jFile::removeDir($this->cachePath, false);
- }
-
- }
Documentation generated on Mon, 19 Sep 2011 14:13:25 +0200 by phpDocumentor 1.4.3