Initial commit

LICENSE

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+MIT License
+
+Copyright (c) 2017 Chrristopher Darling
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Theme Manifest assets
+
+loads a JSON manifest file from {theme}/dist/assets.json, looks up a given path and outputs the hashed filename
+
+## Example
+
+### Folder structure
+dist/
+ - *subfolders*
+ - assets.json
+
+### assets.json
+```
+{
+  'img/logo.png': 'img/logo_HASH.png'
+}
+```
+
+### .ss template
+```
+<img src="{$ThemeManifestAsset(img/logo.png)}" alt="Logo">
+```
+Will output
+```
+<img src="themes/default/dist/img/logo_HASH.png" alt="Logo">
+```

code/ThemeManifestAsset.php

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+<?php
+
+namespace ChristopherDarling\ThemeManifestAssets;
+
+use \Director;
+use \SSViewer;
+
+class ThemeManifestAssets implements \TemplateGlobalProvider
+{
+    public static function get_template_global_variables() {
+        return array(
+            'ThemeManifestAsset' => 'getPath',
+        );
+    }
+
+    private static $manifest_files_cache = null;
+
+    private static function getManifestFiles()
+    {
+        if (null === self::$manifest_files_cache) {
+            $manifest = SSViewer::get_theme_folder() . '/dist/assets.json';
+            $absPath = Director::getAbsFile($manifest);
+
+            if (file_exists($absPath)) {
+                $contents = json_decode(file_get_contents($absPath), true);
+
+                self::$manifest_files_cache[] = $contents;
+            }
+        }
+
+        return self::$manifest_files_cache;
+    }
+
+    public static function getPath($path) {
+        if ($manifests = self::getManifestFiles()):
+            foreach ($manifests as $manifest => $map):
+                if (isset($map[$path])) {
+                    return SSViewer::get_theme_folder() . '/dist/' . $map[$path];
+                }
+            endforeach;
+        endif;
+
+        return false;
+    }
+}

composer.json

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+{
+  "name": "christopherdarling/silverstripe-theme-manifest-assets",
+  "description": "Loads theme assets from a JSON manifest produced from a build tool like Webpack",
+  "type": "silverstripe-module",
+  "keywords": ["silverstripe", "manifest", "asset", "theme", "webpack"],
+  "license": "MIT",
+  "authors": [
+    {
+      "name": "Christopher Darling",
+      "homepage": "http://www.christopherdarling.co.uk",
+      "role": "Developer"
+    }
+  ],
+  "require": {
+    "silverstripe/framework": ">=3.0.1",
+    "composer/installers": "*"
+  },
+  "support": {
+    "issues": "https://github.com/christopherdarling/silverstripe-theme-manifest-assets"
+  },
+  "extra": {
+    "installer-name": "cd_silverstripe-theme-manifest-assets"
+  }
+}