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<?php

require 'zip/PclZipProxy.php';

require 'zip/PhpZipProxy.php';

require 'Segment.php';

class OdfException extends Exception

{}

/**

 * Templating class for odt file

 * You need PHP 5.2 at least

 * You need Zip Extension or PclZip library

 * Encoding : ISO-8859-1

 * Last commit by $Author: neveldo $

 * Date - $Date: 2009-06-06 22:17:14 +0200 (sam., 06 juin 2009) $

 * SVN Revision - $Rev: 40 $

 * Id : $Id: odf.php 40 2009-06-06 20:17:14Z neveldo $

 *

 * @copyright  GPL License 2008 - Julien Pauli - Cyril PIERRE de GEYER - Anaska (http://www.anaska.com)

 * @license    http://www.gnu.org/copyleft/gpl.html  GPL License

 * @version 1.3

 */

class Odf

{

    protected $config = array(

            'ZIP_PROXY' => 'PclZipProxy',

            'DELIMITER_LEFT' => '{',

            'DELIMITER_RIGHT' => '}'

           );

    protected $file;

    protected $contentXml;

    protected $tmpfile;

    protected $images = array();

    protected $vars = array();

    protected $segments = array();

    const PIXEL_TO_CM = 0.026458333;

    /**

     * Constructeur de classe

     *

     * @param string $filename nom du fichier odt

     * @throws OdfException

     */

    public function __construct($filename, $config = array())

    {

            if (! is_array($config)) {

                    throw new OdfException('Configuration data must be passed as array');

            }

            foreach ($config as $configKey => $configValue) {

                    if (array_key_exists($configKey, $this->config)) {

                            $this->config[$configKey] = $configValue;

                    }

            }

        if (! class_exists($this->config['ZIP_PROXY'])) {

            throw new OdfException($this->config['ZIP_PROXY'] . ' class not found - check your php settings');

        }

        $zipHandler = $this->config['ZIP_PROXY'];

        $this->file = new $zipHandler();

        if ($this->file->open($filename) !== true) {

            throw new OdfException("Error while Opening the file '$filename' - Check your odt file");

        }

        if (($this->contentXml = $this->file->getFromName('content.xml')) === false) {

            throw new OdfException("Nothing to parse - check that the content.xml file is correctly formed");

        }

        $this->file->close();

        $tmp = tempnam(null, md5(uniqid()));

        copy($filename, $tmp);

        $this->tmpfile = $tmp;

        $this->_moveRowSegments();

    }

    /**

     * Affecte une variable de template

     *

     * @param string $key nom de la variable dans le template

     * @param string $value valeur de remplacement

     * @param bool $encode si true, les caractères spéciaux XML seront encodés

     * @throws OdfException

     * @return odf

     */

    public function setVars($key, $value, $encode = true, $charset = 'ISO-8859')

    {

        if (strpos($this->contentXml, $this->config['DELIMITER_LEFT'] . $key . $this->config['DELIMITER_RIGHT']) === false) {

            throw new OdfException("var $key not found in the document");

        }

        $value = $encode ? htmlspecialchars($value) : $value;

        $value = ($charset == 'ISO-8859') ? utf8_encode($value) : $value;

        $this->vars[$this->config['DELIMITER_LEFT'] . $key . $this->config['DELIMITER_RIGHT']] = str_replace("\n", "<text:line-break/>", $value);

        return $this;

    }

    /**

     * Affecte une variable de template en tant qu'image

     *

     * @param string $key nom de la variable dans le template

     * @param string $value chemin vers une image

     * @throws OdfException

     * @return odf

     */

    public function setImage($key, $value)

    {

        $filename = strtok(strrchr($value, '/'), '/.');

        $file = substr(strrchr($value, '/'), 1);

        $size = @getimagesize($value);

        if ($size === false) {

            throw new OdfException("Invalid image");

        }

        list ($width, $height) = $size;

        $width *= self::PIXEL_TO_CM;

        $height *= self::PIXEL_TO_CM;

        $xml = <<<IMG

<draw:frame draw:style-name="fr1" draw:name="$filename" text:anchor-type="char" svg:width="{$width}cm" svg:height="{$height}cm" draw:z-index="3"><draw:image xlink:href="Pictures/$file" xlink:type="simple" xlink:show="embed" xlink:actuate="onLoad"/></draw:frame>

IMG;

        $this->images[$value] = $file;

        $this->setVars($key, $xml, false);

        return $this;

    }

    /**

     * Déplace les balises des Segments pour les lignes de tableaux

     * Appelée automatiquement dans le constructeur

     *

     * @return void

     */    

    private function _moveRowSegments()

    {

            // Search all possible rows in the document

            $reg1 = "#<table:table-row[^>]*>(.*)</table:table-row>#smU";

                preg_match_all($reg1, $this->contentXml, $matches);

                for ($i = 0, $size = count($matches[0]); $i < $size; $i++) {

                        // Check if the current row contains a segment row.*

                        $reg2 = '#\[!--\sBEGIN\s(row.[\S]*)\s--\](.*)\[!--\sEND\s\\1\s--\]#sm';

                        if (preg_match($reg2, $matches[0][$i], $matches2)) {

                                $balise = str_replace('row.', '', $matches2[1]);

                                // Move segment tags around the row

                                $replace = array(

                                        '[!-- BEGIN ' . $matches2[1] . ' --]'        => '',

                                        '[!-- END ' . $matches2[1] . ' --]'                => '',

                                        '<table:table-row'                                                        => '[!-- BEGIN ' . $balise . ' --]<table:table-row',

                                        '</table:table-row>'                                                => '</table:table-row>[!-- END ' . $balise . ' --]'

                                );

                                $replacedXML = str_replace(array_keys($replace), array_values($replace), $matches[0][$i]);

                                $this->contentXml = str_replace($matches[0][$i], $replacedXML, $this->contentXml);

                        }

                }

    }

    /**

     * Fusionne les variables de template

     * Appelée automatiquement lors d'une sauvegarde

     *

     * @return void

     */

    private function _parse()

    {

        $this->contentXml = str_replace(array_keys($this->vars), array_values($this->vars), $this->contentXml);

    }

    /**

     * Rajoute le segment fusionné au document

     *

     * @param Segment $segment

     * @throws OdfException

     * @return odf

     */

    public function mergeSegment(Segment $segment)

    {

        if (! array_key_exists($segment->getName(), $this->segments)) {

            throw new OdfException($segment->getName() . 'cannot be parsed, has it been set yet ?');

        }

        $string = $segment->getName();

                // $reg = '@<text:p[^>]*>\[!--\sBEGIN\s' . $string . '\s--\](.*)\[!--.+END\s' . $string . '\s--\]<\/text:p>@smU';

                $reg = '@\[!--\sBEGIN\s' . $string . '\s--\](.*)\[!--.+END\s' . $string . '\s--\]@smU';

        $this->contentXml = preg_replace($reg, $segment->getXmlParsed(), $this->contentXml);

        return $this;

    }

    /**

     * Affiche toutes les variables de templates actuelles

     * 

     * @return string

     */

    public function printVars()

    {

        return print_r('<pre>' . print_r($this->vars, true) . '</pre>', true);

    }

    /**

     * Affiche le fichier de contenu xml du document odt

     * tel qu'il est à cet instant

     *

     * @return string

     */

    public function __toString()

    {

        return $this->contentXml;

    }

    /**

     * Affiche les segments de boucles déclarés avec setSegment()

     * 

     * @return string

     */

    public function printDeclaredSegments()

    {

        return '<pre>' . print_r(implode(' ', array_keys($this->segments)), true) . '</pre>';

    }

    /**

     * Déclare un segment pour une utilisation en boucle

     *

     * @param string $segment

     * @throws OdfException

     * @return Segment

     */

    public function setSegment($segment)

    {

        if (array_key_exists($segment, $this->segments)) {

            return $this->segments[$segment];

        }

        // $reg = "#\[!--\sBEGIN\s$segment\s--\]<\/text:p>(.*)<text:p\s.*>\[!--\sEND\s$segment\s--\]#sm";

        $reg = "#\[!--\sBEGIN\s$segment\s--\](.*)\[!--\sEND\s$segment\s--\]#sm";

        if (preg_match($reg, html_entity_decode($this->contentXml), $m) == 0) {

            throw new OdfException("'$segment' segment not found in the document");

        }

        $this->segments[$segment] = new Segment($segment, $m[1], $this);

        return $this->segments[$segment];

    }

    /**

     * Sauvegarde le fichier odt sur le disque

     * 

     * @param string $file nom du fichier désiré

     * @throws OdfException

     * @return void

     */

    public function saveToDisk($file = null)

    {

        if ($file !== null && is_string($file)) {

                if (file_exists($file) && !(is_file($file) && is_writable($file))) {

                    throw new OdfException('Permission denied : can\'t create ' . $file);

                }

            $this->_save();

            copy($this->tmpfile, $file);

        } else {

            $this->_save();

        }

    }

    /**

     * Sauvegarde interne

     *

     * @throws OdfException

     * @return void

     */

    private function _save()

    {

            $this->file->open($this->tmpfile);

        $this->_parse();

        if (! $this->file->addFromString('content.xml', $this->contentXml)) {

          //erics 20100818 ca deconne ici print "Error during file export";

            throw new OdfException('Error during file export');

        }

        foreach ($this->images as $imageKey => $imageValue) {

            $this->file->addFile($imageKey, 'Pictures/' . $imageValue);

        }

        $this->file->close(); // seems to bug on windows CLI sometimes

    }

    /**

     * Exporte le fichier en fichier attaché via HTTP

     *

     * @param string $name (optionnal)

     * @throws OdfException

     * @return void

     */

    public function exportAsAttachedFile($name="")

    {

        $this->_save();

        if (headers_sent($filename, $linenum)) {

            throw new OdfException("headers already sent ($filename at $linenum)");

        }

        if( $name == "" )

        {

                        $name = md5(uniqid()) . ".odt";

        }

        header('Content-type: application/vnd.oasis.opendocument.text');

        header('Content-Disposition: attachment; filename="'.$name.'"');

        readfile($this->tmpfile);

    }

    /**

     * retourne une variable de configuration

     * 

     * @return string la  variable de configuration demandée

     */

    public function getConfig($configKey)

    {

            if (array_key_exists($configKey, $this->config)) {

                    return $this->config[$configKey];

            }

            return false;

    }

    /**

     * retourne le fichier temporaire de travail

     * 

     * @return string le chemin vers le fichier temporaire de travail

     */

    public function getTmpfile()

    {

            return $this->tmpfile;

    }

    /**

     * Supprime le fichier temporaire à la destruction de l'objet

     */    

    public function __destruct() {

          if (file_exists($this->tmpfile)) {

                unlink($this->tmpfile);

        }

    }

}

?>