Subversion Repositories eFlore/Projets.eflore-projets

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274 jpm 1
<?php
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class WikipediaBot {
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	const HTTP_URL_REQUETE_SEPARATEUR = '&';
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	private $langue = 'fr';
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	private $url = '';
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	private $parametres = array();
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	private $titre = '';
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	private $txt = '';
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	private $userAgent = 'eFloreBot v0.1';
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	private $reponse_entetes = null;
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	public function __construct($options = array()) {
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		if (array_key_exists('langue', $options)) {
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			$this->langue = strtolower($options['langue']);
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		}
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	}
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	public function chargerPage($article) {
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		$this->initialiserRequete();
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		$this->url = $this->getBaseApiURL();
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		$this->parametres = array(
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			'action' => 'query',
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			'prop' => 'revisions',
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			'titles' => $article,
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			'rvprop' => 'content',
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			'redirects' => 1
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		);
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		$this->resultats = $this->consulterAPI();
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		$sxGetAID = $this->resultats['query']['pages'];
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		$sxGetAID = array_shift($sxGetAID);
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		$this->titre = $sxGetAID['title'];
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		$this->txt = $sxGetAID['revisions'][0]['*'];
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	}
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	public function getPageTitre() {
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		return $this->titre;
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	}
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	public function getPageTxt() {
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		return $this->txt;
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	}
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	public function getTaxobox() {
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		$taxobox = '';
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		if (preg_match('/([{]{2}Taxobox début.+[{]{2}Taxobox fin[}]{2})/s', $this->txt, $match)) {
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			$taxobox = $match[1];
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		}
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		return $taxobox;
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	}
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	public function extraireTaxobox() {
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		$taxobox = $this->getTaxobox();
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		$this->txt = str_replace($taxobox, '', $this->txt);
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		return $taxobox;
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	}
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	public function getSectionParNumero($num) {
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		$sections = preg_split('/[=]{2}[^=]+[=]{2}/U', $this->txt);
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		//Debug::printr($sections);
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		$sectionTxt = isset($sections[$num]) ? $sections[$num] : '';
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		return $sectionTxt;
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	}
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	public function getSectionParTitre($titre) {
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		$section = '';
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		if (preg_match('/[=]{2} '.$titre.' [=]{2}(.*)\n\n/sU', $this->txt, $match)) {
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			$section = $match[1];
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		}
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		return $section;
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	}
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	public function rendre($wikitxt) {
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		$wikitxt .= '<references />';
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		$this->initialiserRequete();
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		$this->url = $this->getBaseApiURL();
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		$this->parametres = array(
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					'action' => 'parse',
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					'prop' => 'text',
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					'text' => $wikitxt
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		);
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		$this->resultats = $this->consulterAPI();
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		$txt = $this->resultats['parse']['text']['*'];
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		$txt = $this->remplacerUrls($txt);
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		return $txt;
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	}
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	private function initialiserRequete() {
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		$this->url = '';
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		$this->parametres = array();
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		$this->resultats = array();
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	}
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	private function getBaseWpURL() {
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		$baseURL = "http://{$this->langue}.wikipedia.org";
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		return $baseURL;
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	}
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	private function getBaseApiURL() {
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		$baseURL = $this->getBaseWpURL().'/w/api.php';
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		return $baseURL;
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	}
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	private function consulterAPI() {
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		$this->parametres['format'] = 'php';
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		$resultat = $this->consulterEnPost();
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		$resultat = unserialize($resultat);
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		if (isset($resultat['error'])) {
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			throw new Exception($resultat['error']['info'], $resultat['error']['info']);
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		}
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		return $resultat;
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	}
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	private function consulterEnPost() {
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		return $this->consulter('POST');
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	}
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	private function consulter($mode) {
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		$entetes = array(
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				'Content-type' => 'application/x-www-form-urlencoded',
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				'User-Agent' => $this->userAgent);
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		$contexte = array('http' => array(
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			'method' => $mode,
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			'header' => $this->getEnteteChaine($entetes),
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			'content' => http_build_query($this->parametres, null, self::HTTP_URL_REQUETE_SEPARATEUR)));
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		$contexteFlux = stream_context_create($contexte);
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		$flux = fopen($this->url, 'r', false, $contexteFlux);
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		if (!$flux) {
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			$this->reponse_entetes = $http_response_header;
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			$e = "L'ouverture de l'url '{$this->url}' par la méthode HTTP '$mode' a échoué!";
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			throw new Exception($e);
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		}
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		// Informations sur les en-têtes et métadonnées du flux
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		$this->reponse_entetes = stream_get_meta_data($flux);
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		// Contenu actuel de $url
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		$contenu = stream_get_contents($flux);
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		fclose($flux);
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		return $contenu;
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	}
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	private function getEnteteChaine(Array $entetes) {
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		$entetesCleVal = array();
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		foreach ($entetes as $cle => $valeur) {
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			$entetesCleVal[] = $cle.': '.$valeur;
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		}
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		return implode("\r\n", $entetesCleVal);
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	}
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	private function remplacerUrls($txt) {
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		$remplacements = array(
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			'href="/wiki/' => 'href="'.$this->getBaseWpURL().'/wiki/',
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			'href="/w/' => 'href="'.$this->getBaseWpURL().'/w/');
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		$txt = strtr($txt, $remplacements);
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		return $txt;
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	}
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}
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?>