added the data_uri filter

.travis.yml

@@ -18,7 +18,6 @@ script: ./vendor/bin/simple-phpunit
 jobs:
     fast_finish: true
     include:
-        - php: 7.0
         - php: 7.1
         - php: 7.2
         - php: 7.3

CHANGELOG

@@ -1,5 +1,6 @@
 * 2.12.0 (2019-XX-XX)
 
+ * added the "data_uri" filter
  * fixed cache when opcache is installed but disabled
  * fixed using macros in arrow functions
 

composer.json

@@ -24,13 +24,14 @@
         }
     ],
     "require": {
-        "php": "^7.0",
+        "php": "^7.1.3",
         "symfony/polyfill-mbstring": "^1.3",
         "symfony/polyfill-ctype": "^1.8"
     },
     "require-dev": {
         "symfony/phpunit-bridge": "^3.4.19|^4.1.8|^5.0",
         "symfony/debug": "^2.7",
+        "symfony/mime": "^4.3",
         "psr/container": "^1.0"
     },
     "autoload": {

src/Extension/CoreExtension.php

@@ -269,6 +269,7 @@ public function getFunctions()
             new TwigFunction('date', 'twig_date_converter', ['needs_environment' => true]),
             new TwigFunction('include', 'twig_include', ['needs_environment' => true, 'needs_context' => true, 'is_safe' => ['all']]),
             new TwigFunction('source', 'twig_source', ['needs_environment' => true, 'is_safe' => ['all']]),
+            new TwigFunction('data_uri', 'twig_data_uri'),
         ];
     }
 
@@ -348,7 +349,7 @@ class_alias('Twig\Extension\CoreExtension', 'Twig_Extension_Core');
     use Twig\Source;
     use Twig\Template;
 
-    /**
+/**
  * Cycles over a value.
  *
  * @param \ArrayAccess|array $values

src/Extension/HtmlExtension.php

@@ -0,0 +1,79 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Twig\Extension;
+
+use Symfony\Component\Mime\MimeTypes;
+use Twig\TwigFilter;
+
+final class HtmlExtension extends AbstractExtension
+{
+    private $mimeTypes;
+
+    public function __construct(MimeTypes $mimeTypes = null)
+    {
+        $this->mimeTypes = $mimeTypes;
+    }
+
+    public function getFilters()
+    {
+        return [
+            new TwigFilter('data_uri', [$this, 'dataUri']),
+        ];
+    }
+
+    /**
+     * Creates a data URI (RFC 2397).
+     *
+     * Length validation is not perfomed on purpose, validation should
+     * be done before calling this filter.
+     *
+     * @return string The generated data URI
+     */
+    public function dataUri(string $data, string $mime = null, array $parameters = []): string
+    {
+        $repr = 'data:';
+
+        if (null === $mime) {
+            if (null === $this->mimeTypes) {
+                if (!class_exists(MimeTypes::class)) {
+                    throw new \LogicException('The "data_uri" function requires the symfony/mime package to be installed.');
+                }
+
+                $this->mimeTypes = new MimeTypes();
+            }
+
+            try {
+                $tmp = tempnam(sys_get_temp_dir(), 'mime');
+                file_put_contents($tmp, $data);
+
+                if (null === $mime = $this->mimeTypes->guessMimeType($tmp)) {
+                    $mime = 'text/plain';
+                }
+            } finally {
+                @unlink($tmp);
+            }
+        }
+        $repr .= $mime;
+
+        foreach ($parameters as $key => $value) {
+            $repr .= ';'.$key.'='.rawurlencode($value);
+        }
+
+        if (0 === strpos($mime, 'text/')) {
+            $repr .= ','.rawurlencode($data);
+        } else {
+            $repr .= ';base64,'.base64_encode($data);
+        }
+
+        return $repr;
+    }
+}

tests/Fixtures/filters/data_uri.test

@@ -0,0 +1,14 @@
+--TEST--
+"data_uri" filter
+--TEMPLATE--
+{{ 'foobar#'|data_uri(parameters={charset: "utf-8", foo: "\$bar"}) }}
+{{ '<b>foobar</b>'|data_uri(mime="text/html", parameters={charset: "ascii"}) }}
+<img src="{{ sf_logo|data_uri }}" />
+--DATA--
+return [
+    'sf_logo' => base64_decode('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'),
+]
+--EXPECT--
+data:text/plain;charset=utf-8;foo=%24bar,foobar%23
+data:text/html;charset=ascii,%3Cb%3Efoobar%3C%2Fb%3E
+<img src="data:image/png;base64,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" />

tests/IntegrationTest.php

@@ -13,6 +13,7 @@
 
 use Twig\Extension\AbstractExtension;
 use Twig\Extension\DebugExtension;
+use Twig\Extension\HtmlExtension;
 use Twig\Extension\SandboxExtension;
 use Twig\Extension\StringLoaderExtension;
 use Twig\Node\Expression\ConstantExpression;
@@ -43,6 +44,7 @@ public function getExtensions()
             new SandboxExtension($policy, false),
             new StringLoaderExtension(),
             new TwigTestExtension(),
+            new HtmlExtension(),
         ];
     }