115 lines
2.8 KiB
PHP
115 lines
2.8 KiB
PHP
<?php
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require_once(__DIR__ . '/FormatInterface.php');
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abstract class FormatAbstract implements FormatInterface {
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const DEFAULT_CHARSET = 'UTF-8';
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protected
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$contentType,
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$charset,
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$items,
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$lastModified,
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$extraInfos;
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public function setCharset($charset){
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$this->charset = $charset;
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return $this;
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}
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public function getCharset(){
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$charset = $this->charset;
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return is_null($charset) ? static::DEFAULT_CHARSET : $charset;
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}
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protected function setContentType($contentType){
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$this->contentType = $contentType;
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return $this;
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}
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public function setLastModified($lastModified){
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$this->lastModified = $lastModified;
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}
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protected function callContentType(){
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header('Content-Type: ' . $this->contentType);
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}
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public function display(){
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if ($this->lastModified) {
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header('Last-Modified: ' . gmdate('D, d M Y H:i:s ', $this->lastModified) . 'GMT');
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}
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echo $this->stringify();
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return $this;
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}
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public function setItems(array $items){
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$this->items = array_map(array($this, 'array_trim'), $items);
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return $this;
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}
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public function getItems(){
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if(!is_array($this->items))
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throw new \LogicException('Feed the ' . get_class($this) . ' with "setItems" method before !');
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return $this->items;
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}
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/**
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* Define common informations can be required by formats and set default value for unknown values
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* @param array $extraInfos array with know informations (there isn't merge !!!)
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* @return this
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*/
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public function setExtraInfos(array $extraInfos = array()){
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foreach(array('name', 'uri', 'icon') as $infoName) {
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if(!isset($extraInfos[$infoName])) {
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$extraInfos[$infoName] = '';
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}
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}
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$this->extraInfos = $extraInfos;
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return $this;
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}
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/**
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* Return extra infos
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* @return array See "setExtraInfos" detail method to know what extra are disponibles
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*/
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public function getExtraInfos(){
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if(is_null($this->extraInfos)) { // No extra info ?
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$this->setExtraInfos(); // Define with default value
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}
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return $this->extraInfos;
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}
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/**
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* Sanitized html while leaving it functionnal.
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* The aim is to keep html as-is (with clickable hyperlinks)
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* while reducing annoying and potentially dangerous things.
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* Yes, I know sanitizing HTML 100% is an impossible task.
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* Maybe we'll switch to http://htmlpurifier.org/
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* or http://www.bioinformatics.org/phplabware/internal_utilities/htmLawed/index.php
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*/
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protected function sanitizeHtml($html)
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{
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$html = str_replace('<script', '<‌script', $html); // Disable scripts, but leave them visible.
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$html = str_replace('<iframe', '<‌iframe', $html);
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$html = str_replace('<link', '<‌link', $html);
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// We leave alone object and embed so that videos can play in RSS readers.
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return $html;
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}
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protected function array_trim($elements){
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foreach($elements as $key => $value) {
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if(is_string($value))
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$elements[$key] = trim($value);
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}
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return $elements;
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}
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}
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