- close #21 - enable Unsplash parser

credit-tracker.php

@@ -57,6 +57,7 @@
 require_once(plugin_dir_path(__FILE__) . '/php/parser/flickr.php');
 require_once(plugin_dir_path(__FILE__) . '/php/parser/freeimages.php');
 require_once(plugin_dir_path(__FILE__) . '/php/parser/shutterstock.php');
+require_once(plugin_dir_path(__FILE__) . '/php/parser/unsplash.php');
 
 // Register hooks that are fired when the plugin is activated, deactivated, and uninstalled, respectively.
 register_activation_hook(__FILE__, array('Credit_Tracker', 'activate'));

options.php

@@ -661,6 +661,11 @@ function credittracker_get_sources_array()
             'caption' => 'Wikimedia',
             'copyright' => 'credittracker_get_wikimedia_copyright',
             'retriever' => 'credittracker_get_wikimedia_metadata'
+        ),
+        'unsplash' => array(
+            'caption' => 'Unsplash',
+            'copyright' => 'credittracker_get_unsplash_copyright',
+            'retriever' => 'credittracker_get_unsplash_metadata'
         )
     );
     return $sources;
@@ -840,4 +845,21 @@ function credittracker_get_wikimedia_metadata($number)
     return $item;
 }
 
+/**
+ * Unsplash: copyright
+ */
+function credittracker_get_unsplash_copyright()
+{
+    return CTUnsplash::COPYRIGHT;
+}
+
+/**
+ * Unsplash: metadata
+ */
+function credittracker_get_unsplash_metadata($number)
+{
+    $parser = new CTUnsplash();
+    return $parser->execute($number);
+}
+
 ?>

php/parser/Unsplash.php

@@ -0,0 +1,49 @@
+<?php
+
+/**
+ * Unsplash parser
+ *
+ * @package parser
+ * @author Labs64 <[email protected]>
+ **/
+class CTUnsplash extends CTParser
+{
+
+    const COPYRIGHT = '&copy; %author% - unsplash.com';
+
+    const BASE_URL = 'https://unsplash.com/photos/';
+
+    protected function parse($number)
+    {
+        $url = self::BASE_URL . $number;
+
+        $item = parent::parse($number);
+        $item['source'] = 'Unsplash';
+        $item['publisher'] = 'Unsplash';
+        $item['license'] = 'Creative Commons Zero (CC0 1.0)';
+        $item['link'] = $url;
+
+        $doc = new DOMDocument();
+        $response = $this->curl($url);
+        $html = @$doc->loadHTML(wp_remote_retrieve_body($response));
+        if ($html) {
+            $xpath = new DOMXPath($doc);
+
+            $tags = $xpath->query("*/meta[@property='og:url']");
+            if (!is_null($tags) && $tags->length > 0) {
+                $item['link'] = $tags->item(0)->getAttribute('content');
+            }
+
+            $tags = $xpath->query("*/meta[@property='og:title']");
+            if (!is_null($tags) && $tags->length > 0) {
+                $author = $tags->item(0)->getAttribute('content');
+                $author = str_replace("Photo by ", "", $author);
+                $author = str_replace(" | Unsplash", "", $author);
+                $item['author'] = $author;
+            }
+        }
+
+        return $item;
+    }
+
+}

readme.txt

@@ -1,6 +1,6 @@
 === Plugin Name ===
 Contributors: labs64
-Tags: credit, attribution, legal, copyright, owner, author, media library, media, image, photo, license, royalty-free, RF, Creative Commons, stock, attachment, flickr, fotolia, bildnachweis, impressum, imprint, microdata, NetLicensing
+Tags: credit, attribution, legal, copyright, owner, author, media library, media, image, photo, license, royalty-free, RF, Creative Commons, stock, attachment, flickr, fotolia, unsplash, bildnachweis, impressum, imprint, microdata, NetLicensing
 Requires at least: 3.5.1
 Tested up to: 4.4.2
 Stable tag: 1.1.8
@@ -143,7 +143,7 @@ Yes you can! Join in on our [GitHub repository](https://github.com/Labs64/credit
 == Changelog ==
 
 = 1.1.8 =
-* *TODO*
+* Enable Unsplash parser
 
 = 1.1.7 =
 * Improve custom source handling