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1203 jpm 1
<?php
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// declare(encoding='UTF-8');
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/**
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 * Script d'extration des métadonnées des images pour intégration dans la BDD v2.
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 *
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 * @category	php 5.2
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 * @package		Cel/Scripts
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 * @author		Jean-Pascal MILCENT <jpm@tela-botanica.org>
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 * @copyright	Copyright (c) 2012, Tela Botanica (accueil@tela-botanica.org)
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 * @license	http://www.cecill.info/licences/Licence_CeCILL_V2-fr.txt Licence CECILL
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 * @license	http://www.gnu.org/licenses/gpl.html Licence GNU-GPL
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 * @version	$Id$
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 */
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class ExtracteurMeta {
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	const DROIT = 0705;
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	public $config;
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	public $bdd;
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	private $idImg = null;
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	private $metaComplet = null;
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	private $exif = null;
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	private $iptc = null;
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	private $xmp = null;
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	private $makerNotes = null;
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	private $metaAutres = null;
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	public function __construct($config, Conteneur $conteneur = null) {
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		// Tableau contenant la config de Jrest
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		$this->config = $config;
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		$conteneur = is_null($conteneur) ? new Conteneur($this->config) : $conteneur;
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		$this->bdd = $conteneur->getBdd();
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	}
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	public function executer($arguments) {
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		$this->idImg = $arguments[0];
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		echo "EXTRACTION des MÉTADONNÉES\n";
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		echo "Vérification config : ".$this->verifierConfig()."\n";
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		$cheminImage = $this->obtenirCheminImageOriginale($this->idImg);
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		$cmd = "exiftool -X -file:comment $cheminImage";
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		$metaFile = $this->executerCommandeSysteme($cmd);
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		$remplacement = 'NON';
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		if ($this->neccessiterRemplacement($metaFile) === true) {
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			$remplacement = 'OUI';
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			$cmd = "exiftool -X -D -U -b -c '%.6f' -d '%Y-%m-%d %H:%M:%S' -All $cheminImage";
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			$this->metaComplet = $this->executerCommandeSysteme($cmd);
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			$cmd = "exiftool -X -D -c '%.6f' -d '%Y-%m-%d %H:%M:%S' -exif:all $cheminImage";
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			$this->exif = $this->executerCommandeSysteme($cmd);
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			$cmd = "exiftool -X -D -c '%.6f' -d '%Y-%m-%d %H:%M:%S' -iptc:all $cheminImage";
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			$this->iptc = $this->executerCommandeSysteme($cmd);
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			$cmd = "exiftool -X -D -c '%.6f' -d '%Y-%m-%d %H:%M:%S' -xmp:all $cheminImage";
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			$this->xmp = $this->executerCommandeSysteme($cmd);
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			$cmd = "exiftool -X -D -c '%.6f' -d '%Y-%m-%d %H:%M:%S' -makernotes:all $cheminImage";
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			$this->makerNotes = $this->executerCommandeSysteme($cmd);
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			$cmd = "exiftool -X -D -c '%.6f' -d '%Y-%m-%d %H:%M:%S' --exif:all --iptc:all --xmp:all --makernotes:all $cheminImage";
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			$this->metaAutres = $this->executerCommandeSysteme($cmd);
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			$this->ecrireFichierRdf();
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			$this->mettreAJourBdd();
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		}
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		echo "Remplacement : $remplacement \n";
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	}
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	private function verifierConfig() {
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		if (empty($this->config['cel']['chemin_images'])) {
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			$message = "Vous devez indiquer le dossier contenant la hiérarchie des images dans le paramètre : ".
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				"[cel] chemin_images";
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			$code = (string) E_USER_ERROR;
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			throw new Exception($message);
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		}
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		return 'OK';
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	}
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	private function executerCommandeSysteme($commande) {
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		$handle = popen($commande, 'r');
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		$metaXml = '';
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		while (!feof($handle)) {
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			$metaXml .= fread($handle, 8192);
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		}
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		fclose($handle);
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		return $metaXml;
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	}
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	private function obtenirCheminImageRDF($id_image) {
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		return $this->obtenirCheminImage($id_image, 'RDF', 'xml');
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	}
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	private function obtenirCheminImageOriginale($id_image) {
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		return $this->obtenirCheminImage($id_image, 'O');
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	}
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	private function obtenirCheminImage($id_image, $format, $extension = 'jpg') {
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		$nom = $this->convertirIdBddVersNomFichier($id_image, $format, $extension);
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		$cheminDossier = $this->obtenirDossierPourFormat($id_image, $format);
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		if (file_exists($cheminDossier) === false) {
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			$this->creerDossier($cheminDossier);
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		}
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		return $cheminDossier.'/'.$nom;
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	}
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	private function convertirIdBddVersNomFichier($id, $format, $extension) {
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		$id_avec_zeros = sprintf('%09s', $id) ;
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		$id_avec_zeros_underscores = wordwrap($id_avec_zeros, 3 , '_', true) ;
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		$nom_fichier = $id_avec_zeros_underscores.'_'.$format.'.'.$extension;
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		return $nom_fichier;
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	}
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	private function obtenirDossierPourFormat($id, $format) {
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		$chemin_base = $this->config['cel']['chemin_images'];
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		$chemin_sur_serveur = $chemin_base;
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		$id = sprintf('%09s', $id);
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		$id = wordwrap($id, 3 , '_', true);
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		list($dossierNiveau1, $dossierNiveau2) = explode('_', $id);
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		$chemin_sur_serveur_final = $chemin_sur_serveur.'/'.$dossierNiveau1.'/'.$dossierNiveau2.'/'.$format;
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		return $chemin_sur_serveur_final;
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	}
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	private function creerDossier($cheminDossier) {
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		umask(0);
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		if (mkdir($cheminDossier, self::DROIT, true) === false) {
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			$message = "Problème durant la création du dossier '$cheminDossier'.";
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			throw new Exception($message);
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		}
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	}
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	private function neccessiterRemplacement($metaXml) {
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		$meta = new SimpleXMLElement($metaXml);
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		$rdf = $meta->children('http://www.w3.org/1999/02/22-rdf-syntax-ns#');
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		$file = $rdf->children('http://ns.exiftool.ca/File/1.0/');
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		return strpos($file->Comment, "CREATOR: gd-jpeg") === false ? true : false;
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	}
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	private function ecrireFichierRdf() {
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		$cheminRdf = $this->obtenirCheminImageRDF($this->idImg);
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		file_put_contents($cheminRdf, $this->metaComplet);
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	}
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	private function mettreAJourBdd() {
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		$requete = "SELECT nom_utilisateur FROM cel_images WHERE id_image = {$this->idImg} ";
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		$resultats = $this->bdd->requeter($requete, Bdd::SQL_RETOUR_COLONNE);
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		print_r($resultats);
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		echo "\n";
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	}
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}
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?>