Throw specific error if file is found to be empty

CHANGELOG.md

@@ -0,0 +1,7 @@
+# Changelog
+
+## [X.X.X] - XXXX-XX-XX
+- Allow passing in a space-separated string to the `classes` option
+
+## [1.0.0] - 2023-06-27
+- First major version release

README.md

@@ -33,11 +33,12 @@ pcm_icon:
             fill-group-hover:     'group-hover:fill-red-800'
             stroke-group-hover: 'group-hover:stroke-red-800'
 ```
-# @TODO default options
+
+`default` - Override the default options provided to the bundle.
 
 `directories` - Which directories to look in for icons.
 
-`colours` - Custom colours to use when colouring icons. Because this extension relies on Tailwind classes for colouring we must specify all the classes. This is a bit awkward, but you can just copy this template replacing COLOUR as appropriate:
+`colours` - Custom colours to use when colouring icons. Because this extension relies on Tailwind classes for colouring we **must** explicitly list all the classes required for Tailwind to render them properly. You can just copy this template replacing COLOUR as appropriate:
 
 ```yaml
 COLOUR:
@@ -51,26 +52,17 @@ COLOUR:
 
 ## Options
 
-`icon (string)` **(REQUIRED)** Icon to use, without the `.svg` extension
+`icon (string)` **(REQUIRED)** Icon to use, without the `.svg` extension.
 
-`title (string)` Optional text to show on hover
+`title (string)` Optional text to show on hover. This can be null, but not an empty string.
 
-`size (int)` Size of the icon in pixels
+`size (int)` Size of the icon in pixels.
 
-`colour (string)` Name of the colour to use. Defaults to `primary` as it assumes you have a Tailwind colour set up called `primary`. If however you are not using `primary` to set a Tailwind primary colour in your project, you can instead set the default colour of the icon by changing what colour classes the primary colour uses. EG:
-```yaml
-primary:
-    fill:                             'fill-purple-700'
-    stroke:                         'stroke-purple-700'
-    fill-hover:                 'hover:fill-purple-700'
-    stroke-hover:             'hover:stroke-purple-700'
-    fill-group-hover:     'group-hover:fill-purple-700'
-    stroke-group-hover: 'group-hover:stroke-purple-700'
-```
+`colour (string)` Name of the colour to use. Defaults to `primary` as it assumes you have a Tailwind colour set up called `primary`. If you are not using `primary` to set a Tailwind primary colour in your project you can change the default colour in the `pcm_icon.yaml` file.
 
 `hover (string)` Name of the colour to use when the icon is hovered over
 
-`classes (string[])` Additional classes to add to the icon. This can cause Tailwind class collisions, so only use it as a last resort.
+`classes (string[]|string)` Additional classes to add to the icon as either an array of strings or a space-separated string. This can cause Tailwind class collisions, so it is not recommended to use.
 
 ## Reminders
 Remember to add `./config/packages/*.yaml` as a value in your Tailwind config content array if it does not already exist. This will ensure Tailwind classes inside of the config file get compiled.

config/services.yaml

@@ -5,8 +5,16 @@ services:
 
     pcm_icon.icon_extension:
         public: true
-        class: Pcm\IconBundle\Twig\Functions\IconExtension
+        class: Pcm\IconBundle\Twig\Extension\IconExtension
 
-    Pcm\IconBundle\Twig\Functions\IconExtension:
+    Pcm\IconBundle\Twig\Extension\IconExtension:
         public: false
         alias: pcm_icon.icon_extension
+
+    Pcm\IconBundle\Twig\Runtime\IconRuntime:
+        tags:
+            - { name: twig.runtime }
+        arguments:
+            $defaultOptions: '%pcm.icon_bundle.default_options%'
+            $directories: '%pcm.icon_bundle.directories%'
+            $colours: '%pcm.icon_bundle.colours%'

src/DependencyInjection/PcmIconExtension.php

@@ -23,10 +23,8 @@ class PcmIconExtension extends Extension
         $configuration = new Configuration();
         $config = $this->processConfiguration($configuration, $configs);
 
-        $definition = $container->getDefinition('pcm_icon.icon_extension');
-
-        $definition->addArgument($config['default']);
-        $definition->addArgument($config['directories']);
-        $definition->addArgument($config['colours']);
+        $container->setParameter('pcm.icon_bundle.default_options', $config['default']);
+        $container->setParameter('pcm.icon_bundle.directories', $config['directories']);
+        $container->setParameter('pcm.icon_bundle.colours', $config['colours']);
     }
 }

src/Exception/EmptyFileException.php

@@ -0,0 +1,7 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pcm\IconBundle\Exception;
+
+class EmptyFileException extends \Exception {};

src/Twig/Extension/IconExtension.php

@@ -16,7 +16,7 @@ final class IconExtension extends AbstractExtension
     public function getFunctions(): array
     {
         return [
-            new TwigFunction('pcm_icon', [IconRuntime::class, 'renderIcon'])
+            new TwigFunction('pcm_icon', [IconRuntime::class, 'renderIcon'], ['is_safe' => ['html']])
         ];
     }
 }

src/Twig/Runtime/IconRuntime.php

@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace Pcm\IconBundle\Twig\Runtime;
 
 use Pcm\IconBundle\Exception\ColourNotFound;
+use Pcm\IconBundle\Exception\EmptyFileException;
 use Pcm\IconBundle\Exception\IconNotFound;
 use Twig\Extension\RuntimeExtensionInterface;
 
@@ -16,7 +17,7 @@ final class IconRuntime implements RuntimeExtensionInterface
         'size'    => null,
         'colour'  => null,
         'hover'   => null,
-        'classes' => [],
+        'classes' => "",
     ];
 
     public function __construct(private array $defaultOptions, private array $directories, private array $colours)
@@ -31,7 +32,8 @@ final class IconRuntime implements RuntimeExtensionInterface
      *     'size'    => (int)             Height and width in px
      *     'colour'  => (string)          Main colour
      *     'hover'   => (?string)         Hover colour
-     *     'classes' => (array)   Additional classes to add to the icon. Not recommended.
+     *     'classes' => (string[]|string) Additional classes to add to the icon, given as
+     *                                    an array of strings or a space-separated string.
      * ]
      * ```
      *
@@ -43,6 +45,10 @@ final class IconRuntime implements RuntimeExtensionInterface
 
         $svg = $this->getSvg($options['icon']);
 
+        if (empty($svg)) {
+            throw new EmptyFileException(\sprintf("The file %s.svg was found, but it was empty!", $options['icon']));
+        }
+
         $this->sanitiseSvg($svg);
 
         $colourClasses = $this->getColourClasses($options['colour'], $options['hover']);
@@ -60,9 +66,9 @@ final class IconRuntime implements RuntimeExtensionInterface
         return $svg;
     }
 
-    private function getExtraClasses(array $extraClasses): string
+    private function getExtraClasses(array|string $extraClasses): string
     {
-        return implode(' ', $extraClasses);
+        return \is_array($extraClasses) ? implode(' ', $extraClasses) : $extraClasses;
     }
 
     private function mergeWithDefaultOptions(array $userOptions): array
@@ -103,6 +109,9 @@ final class IconRuntime implements RuntimeExtensionInterface
         $this->removeBlackFillAttributes($svg);
     }
 
+    /**
+     * @throws IconNotFound when an svg file with the passed in name cannot be found
+     */
     private function findSvgFilepath(string $iconName): string
     {
         foreach ($this->directories as $directory) {

tests/Twig/Runtime/IconRuntimeTest.php

@@ -6,6 +6,7 @@ namespace Pcm\IconBundle\Tests\Twig\Functions;
 
 use Pcm\IconBundle\DependencyInjection\Configuration;
 use Pcm\IconBundle\Exception\ColourNotFound;
+use Pcm\IconBundle\Exception\EmptyFileException;
 use Pcm\IconBundle\Exception\IconNotFound;
 use Pcm\IconBundle\Twig\Runtime\IconRuntime;
 use PHPUnit\Framework\TestCase;
@@ -50,6 +51,12 @@ class IconRuntimeTest extends TestCase
         $this->icon->renderIcon(['icon' => random_bytes(8)]);
     }
 
+    public function testThrowsIfPassedInAnEmptyFile(): void
+    {
+        $this->expectException(EmptyFileException::class);
+        $this->icon->renderIcon(['icon' => 'empty']);
+    }
+
     public function testNoTitleExistsIfNotPassedIn(): void
     {
         $content = $this->icon->renderIcon(['icon' => self::ICON]);
@@ -225,19 +232,26 @@ class IconRuntimeTest extends TestCase
         $this->assertMatchesRegularExpression('/<svg.+class=".*group-hover:stroke-white.*".*>/', $contents);
     }
 
-    public function testExtraClassesThrowsIfNotAnArray(): void
+    public function testExtraClassesThrowsIfNotAnArrayOrString(): void
     {
         $this->expectException(\TypeError::class);
-        $this->icon->renderIcon(['icon' => self::ICON, 'classes' => 'string_value']);
+        $this->icon->renderIcon(['icon' => self::ICON, 'classes' => 1]);
     }
 
-    public function testExtraClassesGetAdded(): void
+    public function testExtraClassesGetAddedFromArray(): void
     {
         $contents = $this->icon->renderIcon(['icon' => self::ICON, 'classes' => ['abc', 'def']]);
         $this->assertMatchesRegularExpression('/<svg.+class=".*abc.*".*>/', $contents);
         $this->assertMatchesRegularExpression('/<svg.+class=".*def.*".*>/', $contents);
     }
 
+    public function testExtraClassesGetAddedFromString(): void
+    {
+        $contents = $this->icon->renderIcon(['icon' => self::ICON, 'classes' => 'ghi jkl']);
+        $this->assertMatchesRegularExpression('/<svg.+class=".*ghi.*".*>/', $contents);
+        $this->assertMatchesRegularExpression('/<svg.+class=".*jkl.*".*>/', $contents);
+    }
+
     public function testAddingExtraClassesDoesntStripAwayColourClasses(): void
     {
         $contents = $this->icon->renderIcon(['icon' => self::ICON, 'classes' => ['abc']]);