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jpm |
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<?php
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class Surligneur {
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private $texte = '';
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private $tags = array();
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private $nbreSurlignageMaxParMot = 1;
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private $nbreSurlignageCourant = 0;
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public function __construct($texte = null, $surlignageMaxParMot = null) {
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if (is_null($texte) == false) {
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$this->setTexte($texte);
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}
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if (is_null($surlignageMaxParMot) == false) {
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$this->setNbreMaxSurlignageParMot($surlignageMaxParMot);
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}
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}
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public function setTexte($txt) {
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$this->texte = $txt;
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}
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public function setNbreMaxSurlignageParMot($nbre) {
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$this->nbreSurlignageMaxParMot = $nbre;
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}
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public function surlignerMots($mots) {
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$this->verifierTableauDeMots($mots);
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$this->texte = preg_replace_callback('`<[^>]+>`', array($this, 'sauverTags'), $this->texte);
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foreach ($mots as $mot) {
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$this->initialiserNbreSurlignageCourant();
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$this->texte = $this->surlignerMot($mot);
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}
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$this->texte = preg_replace_callback('`<([0-9]+)>`', array($this, 'restaurerTags'), $this->texte);
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return $this->texte;
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}
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private function verifierTableauDeMots($mots) {
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if (is_array($mots) === false) {
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$message = "Surligneur::surlignerMots() n'accepte que les tableaux de mots en argument";
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throw new InvalidArgumentException($message);
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} else {
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if (count($mots) == 0) {
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$message = "Surligneur::surlignerMots() n'accepte que des tableaux contenant au moins un mot";
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throw new LengthException($message);
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}
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}
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}
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private function sauverTags($match) {
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$i = count($this->tags);
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$this->tags[$i] = $match[0];
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return '<'.$i.'>';
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}
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private function initialiserNbreSurlignageCourant() {
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$this->nbreSurlignageCourant = 0;
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}
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private function surlignerMot($mot) {
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$positionDebutMot = stripos($this->texte, $mot);
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$longueurMot = strlen($mot);
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$surlignage = $this->texte;
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if ($positionDebutMot !== false) {
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$this->nbreSurlignageCourant++;
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if ($this->nbreSurlignageCourant <= $this->nbreSurlignageMaxParMot) {
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$debut = substr($this->texte, 0, $positionDebutMot);
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$milieu = substr($this->texte, $positionDebutMot, $longueurMot);
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$this->texte = substr($this->texte, $positionDebutMot + $longueurMot);
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$fin = $this->surlignerMot($mot);
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$surlignage = $debut.$this->sauverTagSurlignage($milieu).$fin;
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}
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}
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return $surlignage;
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}
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private function sauverTagSurlignage($motTrouve) {
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$i = count($this->tags);
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$this->tags[$i] = '<span class="surlignage">'.$motTrouve.'</span>';
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return '<'.$i.'>';
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}
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private function restaurerTags($match) {
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return $this->tags[$match[1]];
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}
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}
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?>
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