Initial version

Author: afbora

.gitignore

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+composer.lock
+.DS_Store

LICENSE

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+MIT License
+
+Copyright (c) 2019 Ahmet Bora
+
+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.

composer.json

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+{
+    "name": "afbora/kirby-minify-html",
+    "description": "Enable minify HTML output for Kirby 3",
+    "keywords": [
+        "kirby",
+        "kirby-3",
+        "kirby-cms",
+        "kirby3-plugin",
+        "kirby-plugin"
+    ],
+    "version": "1.0",
+    "type": "kirby-plugin",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Ahmet Bora",
+            "email": "[email protected]"
+        }
+    ],
+    "require": {
+        "php": "^7.1.3",
+        "getkirby/composer-installer": "^1.1.4"
+    },
+    "config": {
+        "optimize-autoloader": true,
+        "preferred-install": "dist",
+        "sort-packages": true
+    },
+    "minimum-stability": "dev",
+    "prefer-stable": true
+}

index.php

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+<?php
+
+@include_once __DIR__ . '/vendor/autoload.php';
+
+use Kirby\Toolkit\Tpl;
+use Kirby\Cms\Template;
+use Kirby\Cms\App as Kirby;
+
+class MinifyHTML extends Template
+{
+    public function render(array $data = []): string
+    {
+        $html = Tpl::load($this->file(), $data);
+
+        $search = array(
+            '/\>[^\S ]+/s',     // strip whitespaces after tags, except space
+            '/[^\S ]+\</s',     // strip whitespaces before tags, except space
+            '/(\s)+/s',         // shorten multiple whitespace sequences
+            '/<!--(.|\s)*?-->/' // Remove HTML comments
+        );
+
+        $replace = array(
+            '>',
+            '<',
+            '\\1',
+            ''
+        );
+
+        $html = preg_replace($search, $replace, $html);
+
+        return $html;
+    }
+}
+
+Kirby::plugin('afbora/kirby-minify-html', [
+    'components' => [
+        'template' => function (Kirby $kirby, string $name, string $contentType = null) {
+            return new MinifyHTML($name, $contentType);
+        }
+    ]
+]);

vendor/autoload.php

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+<?php
+
+// autoload.php @generated by Composer
+
+require_once __DIR__ . '/composer/autoload_real.php';
+
+return ComposerAutoloaderInitb347d04a24e66ed035d9a7739784b824::getLoader();