Subversion Repositories Applications.wikini

<?php

// declare(encoding='UTF-8');

/**

 * Web service de consultation d'un page wiki

 *

 * @category	php 5.2

 * @package		wapi

 * @author		Aurélien Peronnet < aurelien@tela-botanica.org>

 * @author		Jean-Pascal Milcent < jpm@tela-botanica.org>

 * @copyright	Copyright (c) 2011, Tela Botanica (accueil@tela-botanica.org)

 * @license		http://www.cecill.info/licences/Licence_CeCILL_V2-fr.txt Licence CECILL

 * @license		http://www.gnu.org/licenses/gpl.html Licence GNU-GPL

 * @version		$Id$

 */

class Pages extends Service {

	private $wiki = null;

	private $pageNom = null;

	private $section = null;

	private $retour = 'txt';

	private $formats_retour = array('txt','html');

	private $format_texte;

	const MIME_JSON = 'application/json';

	const MIME_HTML = 'text/html';

	const MIME_TEXT = 'text/plain';

	public function consulter($ressources, $parametres) {

		try {

			$this->definirValeurParDefautDesParametres();

			$this->verifierParametres($parametres);

			$this->analyserParametres($ressources, $parametres);

			$page = $this->consulterPage($this->pageNom);

			$retour = $this->formaterRetour($page);

			$this->envoyerContenuJson($retour);

		} catch (Exception $e) {

			$this->envoyerErreur($e);

		}

	}

	private function definirValeurParDefautDesParametres() {

		if (isset($this->parametres['txt_format']) == false) {

			$this->parametres['txt_format'] = 'txt';

		}

	}

	private function verifierParametres($parametres) {

		$erreurs = array();

		if (isset($parametres['txt_format'])) {

			if(!in_array($parametres['txt_format'], $this->formats_retour)) {

				$message = "La valeur du paramètre 'txt.format' peut seulement prendre les valeurs : txt et html.";

				$erreurs[] = $message;

			}

		}

		if(isset($parametres['txt_section_position']) && !is_numeric($parametres['txt_section_position'])) {

			$message = "La valeur du paramètre 'txt.section.position' peut seulement prendre des valeurs numeriques";

			$erreurs[] = $message;

		}

		if(isset($parametres['txt_section_titre']) && trim($parametres['txt_section_titre']) == '') {

			$message = "La valeur du paramètre 'txt.section.titre' ne peut pas être vide si celui-ci est présent";

			$erreurs[] = $message;

		}

		if (count($erreurs) > 0) {

			$message = implode('<br />', $erreurs);

			$code = RestServeur::HTTP_CODE_MAUVAISE_REQUETE;

			throw new Exception($message, $code);

		}

	}

	private function analyserParametres($ressources, $parametres) {

		$this->pageNom = $ressources[0];

		if(isset($parametres['txt_section_titre'])) {

			$this->section = $parametres['txt_section_titre'];

		}

		if(isset($parametres['txt_section_position'])) {

			$this->section = $parametres['txt_section_position'];

		}

		if (isset($parametres['txt_format'])) {

			$this->retour = $parametres['txt_format'];

		}

	}

	private function consulterPage($page) {

		$this->wiki = Registre::get('wikiApi');

		$this->wiki->setPageCourante($this->pageNom);

		$page = $this->wiki->LoadPage($page);

		// attention les wikis sont en ISO !

		if(Config::get('encodage_appli') != Config::get('encodage_wiki')) {

			$page["body"] = mb_convert_encoding($page['body'],Config::get('encodage_appli'),Config::get('encodage_wiki'));

		}

		if($this->section != null) {

			$page["body"] = $this->découperPageSection($page["body"], $this->section);

		}

		return $page;

	}

	private function découperPageSection($contenu_page, $section) {

		$section_retour = '';

		if(is_numeric($section)) {

			$section_retour =  $this->getSectionParNumero($contenu_page, $section);

		} else {

			$section_retour =  $this->getSectionParTitre($contenu_page, $section);

		}

		return $section_retour;

	}

	public function getSectionParNumero($page, $num) {

		preg_match_all('/(=[=]+[ ]*)(.[.^=]*)+[ ]*=[=]+[.]*/i', $page, $sections, PREG_OFFSET_CAPTURE);

		$sectionTxt = '';

		$debut_section = 0;

		$lg_page = strlen($page);

		$fin_section = $lg_page;

		if($num <= count($sections[1]) && $num > 0) {

			$debut_section = $sections[1][$num - 1][1];

			$separateur = trim($sections[1][$num - 1][0]);

			$separateur_trouve = false;

			for($i = $num; $i < count($sections[1]); $i++) {

				$fin_section = $sections[1][$i][1];

				if($separateur == trim($sections[1][$i][0])) {

					$separateur_trouve = true;

					break;

				}

			}

			$fin_section = $separateur_trouve ? $fin_section : $lg_page;

			$sectionTxt = substr($page, $debut_section, $fin_section - $debut_section);

		} else {

			$sectionTxt = '';

		}

		return $sectionTxt;

	}

	public function getSectionParTitre($page, $titre) {

		$section = '';

		$reg_exp = '/((=[=]+)[ ]*'.preg_quote(trim($titre), '/').'[ ]*=[=]+)[.]*/i';

		$match = preg_split($reg_exp, $page, 2, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);

		if(count($match) > 3) {

			$section = explode(trim($match[2]), $match[3], 2);

			$section = $match[1].' '.$section[0];

		} elseif(count($match) == 2) {

			$section = explode(trim($match[1]), $match[2], 2);

			$section = $match[0].' '.$section[0];

		} else {

			$section = "";

		}

		return $section;

	}

	private function formaterRetour($page) {

		$mime = null;

		$texte = '';

		switch($this->retour) {

			case 'html':

				$texte = $this->wiki->Format($page["body"], "wakka");

				$mime = self::MIME_HTML;

				break;

			default:

				$texte = $page["body"];

				$mime = self::MIME_TEXT;

		}

		$retour = array('id' => $this->pageNom,

				'titre' => $this->pageNom,

				'mime' => $mime,

				'texte' => $texte,

				'href' => '');

		return $retour;

	}

}

?>