Build DataUri from remote URL

* get file from a remote URL via CURL and build a DataUri from it
* perform basic CURL response validation

Author: Francesco Abeni

src/DataURI/Data.php

@@ -225,6 +225,32 @@ public static function buildFromFile($file, $strict = false, $lengthMode = Data:
         return $dataURI;
     }
 
+    /**
+     * Get a new instance of DataUri\Data from a remote file
+     *
+     * @param string    $url            Path to the remote file
+     * @param boolean   $strict         Use strict mode
+     * @param int       $lengthMode     The length mode
+     * @return \DataURI\Data
+     */
+    public static function buildFromUrl($url, $strict = false, $lengthMode = Data::TAGLEN)
+    {
+        $ch = curl_init($url);
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+        $data = curl_exec($ch);
+
+        if (curl_getinfo($ch, CURLINFO_HTTP_CODE) != 200) {
+            throw new FileNotFoundException(sprintf('%s file does not exist or the remote server does not respond', $url));
+        }
+
+        $mimeType = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
+        curl_close($ch);
+
+        $dataURI = new static($data, $mimeType, array(), $strict, $lengthMode);
+
+        return $dataURI;
+    }
+
     /**
      * Contructor initialization
 

tests/DataTest.php

@@ -119,6 +119,15 @@ public function testBuildFromFile()
         $this->assertEquals(file_get_contents($file), $dataURI->getData());
     }
 
+    public function testBuildFromUrl()
+    {
+        $url = 'http://www.alchemy.fr/images/header_03.png';
+        $dataURI = DataURI\Data::buildFromUrl($url);
+        $this->assertInstanceOf('DataURI\Data', $dataURI);
+        $this->assertEquals('image/png', $dataURI->getMimeType());
+        $this->assertEquals(file_get_contents($url), $dataURI->getData());
+    }
+
     /**
      * @expectedException \DataURI\Exception\FileNotFoundException
      */