Add support for Sharp constructor options

README.md

@@ -77,6 +77,25 @@ Sharp::run(
 );
 ```
 
+Using constructor options (e.g., setting density for SVG/PDF files):
+```php
+Sharp::run(
+    [
+        'input' => [
+            'is_raw' => false,
+            'data' => $svgPath,
+            'options' => ['density' => 300] // Constructor options
+        ],
+        'output' => ['is_raw' => false, 'file' => $pngPath],
+    ],
+    [
+        'toFormat' => ['format' => 'png']
+    ]
+);
+```
+
+The `options` parameter in the input array accepts any valid Sharp constructor options. See the [Sharp constructor documentation](https://sharp.pixelplumbing.com/api-constructor/) for available options.
+
 Refer to the test cases in `tests/Unit/SharpTest.php` for more examples.
 
 ## Contributing

src/Sharp.php

@@ -15,7 +15,7 @@
 class Sharp
 {
     /**
-     * @param array $io {input: {is_raw: bool, data: string, ?ext: string}, output: {is_raw: bool, ?file: string}}
+     * @param array $io {input: {is_raw: bool, data: string, ?ext: string, ?options: object}, output: {is_raw: bool, ?file: string}}
      * @param array $params {toFormat: {format: string, options: object}, {resize: {width: int, height: int, options: object}}}
      * @return string
      * @throws Exception
@@ -38,7 +38,16 @@ public static function run(array $io, array $params)
                 $file = $io['input']['data'];
             }
 
-            $process = new Process(['node', __DIR__ . '/sharp.js', $file, json_encode($params)]);
+            // Extract constructor options if provided
+            $constructorOptions = isset($io['input']['options']) ? json_encode($io['input']['options']) : null;
+
+            // Build process arguments
+            $processArgs = ['node', __DIR__ . '/sharp.js', $file, json_encode($params)];
+            if ($constructorOptions !== null) {
+                $processArgs[] = $constructorOptions;
+            }
+
+            $process = new Process($processArgs);
             $process->run();
 
             // Cleanup temporary file

src/sharp.js

@@ -16,7 +16,7 @@ const sharp = require('sharp');
             throw new Error('Missing required arguments: file and apis');
         }
 
-        const [file, apisJson] = arguments;
+        const [file, apisJson, constructorOptionsJson] = arguments;
 
         // Validate JSON apis
         let apis;
@@ -26,8 +26,18 @@ const sharp = require('sharp');
             throw new Error('Invalid apis JSON format');
         }
 
-        // Initialize sharp with input file
-        let image = sharp(file);
+        // Parse constructor options if provided
+        let constructorOptions = {};
+        if (constructorOptionsJson) {
+            try {
+                constructorOptions = JSON.parse(constructorOptionsJson);
+            } catch (e) {
+                throw new Error('Invalid constructor options JSON format');
+            }
+        }
+
+        // Initialize sharp with input file and optional constructor options
+        let image = sharp(file, constructorOptions);
 
         // Define supported APIs map, see https://sharp.pixelplumbing.com/
         const supportedApis = {

tests/Unit/SharpTest.php

@@ -111,4 +111,33 @@ public function testCanRemoveAlphaChannel()
 
         $this->assertFileExists($outputPath);
     }
+
+    public function testCanUseConstructorOptions()
+    {
+        $outputPath = $this->testOutputDir . '/with-density.png';
+
+        $io = [
+            'input' => [
+                'is_raw' => false,
+                'data' => $this->testSvgFile,
+                'options' => ['density' => 300]
+            ],
+            'output' => [
+                'is_raw' => false,
+                'file' => $outputPath
+            ]
+        ];
+
+        $params = [
+            'toFormat' => ['format' => 'png']
+        ];
+
+        Sharp::run($io, $params);
+
+        $this->assertFileExists($outputPath);
+
+        // Verify the image has higher density by checking file size
+        // Higher density should result in larger file size
+        $this->assertGreaterThan(0, filesize($outputPath));
+    }
 }