🚧 Continues tests, parser and starts builder

For #4
2025-11-01 02:43:08 +01:00 · 2023-04-07 17:57:35 +02:00
parent fec8c122e3
commit 63d0b03b50
18 changed files with 494 additions and 234 deletions
--- a/src/Parser/SRSSParser.php
+++ b/src/Parser/SRSSParser.php
@@ -0,0 +1,149 @@
+<?php
+
+namespace Shikiryu\SRSS\Parser;
+
+use DOMDocument;
+use DOMNodeList;
+use DOMXPath;
+use Shikiryu\SRSS\Entity\Channel;
+use Shikiryu\SRSS\Entity\Channel\Image;
+use Shikiryu\SRSS\Entity\Item;
+use Shikiryu\SRSS\Exception\SRSSException;
+use Shikiryu\SRSS\SRSS;
+
+class SRSSParser extends DomDocument
+{
+    private SRSS $doc;
+    private DOMXPath $xpath;
+
+    public function __construct()
+    {
+        libxml_use_internal_errors(true);
+        parent::__construct();
+        $this->xpath = new DOMXpath($this);
+        $this->doc = new SRSS();
+    }
+
+    /**
+     * Destructor
+     * manage of libxml errors
+     */
+    public function __destruct()
+    {
+        foreach (libxml_get_errors() as $error) {
+            error_log($error->message, 3, 'error.log');
+        }
+        libxml_clear_errors();
+    }
+
+    /**
+     * @param string $link
+     *
+     * @return \Shikiryu\SRSS\SRSS
+     * @throws \Shikiryu\SRSS\Exception\SRSSException
+     */
+    public function parse(string $link)
+    {
+        if(@$this->load($link)) { // We don't want the warning in case of bad XML. Let's manage it with an exception.
+            $channel = $this->getElementsByTagName('channel');
+            if($channel->length === 1){ // Good URL and good RSS
+                $this->_loadAttributes(); // loading channel properties
+                $this->getItems(); // loading all items
+
+                return $this->doc;
+            }
+
+            throw new SRSSException('invalid file '.$link);
+        }
+
+        throw new SRSSException('Can not open file '.$link);
+    }
+
+    /**
+     * @return Item[]
+     * @throws \Shikiryu\SRSS\Exception\SRSSException
+     */
+    private function getItems(): array
+    {
+        $channel = $this->_getChannel();
+        /** @var DOMNodeList $items */
+        $items = $channel->getElementsByTagName('item');
+        $length = $items->length;
+        $this->doc->items = [];
+        if ($length > 0) {
+            for($i = 0; $i < $length; $i++) {
+                $this->doc->items[$i] = ItemParser::read($items->item($i));
+            }
+        }
+
+        return $this->doc->items;
+    }
+    /**
+     * putting all RSS attributes into the object
+     * @throws SRSSException
+     */
+    private function _loadAttributes(): void
+    {
+        $node_channel = $this->_getChannel();
+        $this->doc->channel = new Channel();
+
+        foreach($node_channel->childNodes as $child) {
+            if ($child->nodeType === XML_ELEMENT_NODE && $child->nodeName !== 'item') {
+                if($child->nodeName === 'image') {
+                    $image = new Image();
+                    foreach($child->childNodes as $children) {
+                        if($children->nodeType == XML_ELEMENT_NODE) {
+                            $image->{$child->nodeName} = $children->nodeValue;
+                        }
+                    }
+                    $this->doc->channel->image = $image;
+
+                } else {
+                    $this->doc->channel->{$child->nodeName} = $child->nodeValue;
+                }
+            }
+        }
+    }
+
+
+    /**
+     * getter of current RSS channel
+     * @return \DOMNode
+     * @throws SRSSException
+     */
+    private function _getChannel(): \DOMNode
+    {
+        $channel = $this->getElementsByTagName('channel');
+        if($channel->length != 1) {
+            throw new SRSSException('channel node not created, or too many channel nodes');
+        }
+
+        return $channel->item(0);
+    }
+
+    /**
+     * getter of "image"'s channel attributes
+     * @return string|array
+     * TODO
+     */
+    public function image()
+    {
+        $args = func_get_args();
+        if (func_num_args() == 0) {
+            $args[0] = 'url';
+        }
+        $img = $this->xpath->query('//channel/image');
+        if ($img->length != 1) { // <image> is not in channel
+            return null;
+        }
+        $img = $img->item(0);
+        $r = [];
+        foreach ($img->childNodes as $child) {
+            if ($child->nodeType == XML_ELEMENT_NODE && in_array($child->nodeName, $args)) {
+                $r[$child->nodeName] = $child->nodeValue;
+            }
+        }
+
+        return (func_num_args() > 1) ? $r : $r[$args[0]];
+    }
+}