Add GitHub-based plugin update checker

composer.json

@@ -5,7 +5,8 @@
     "license": "GPL-2.0-or-later",
     "require": {
         "php": ">=7.4",
-        "league/html-to-markdown": "^5.1"
+        "league/html-to-markdown": "^5.1",
+        "yahnis-elsts/plugin-update-checker": "^5.6"
     },
     "autoload": {
         "psr-4": {

src/Plugin.php

@@ -9,6 +9,7 @@
 
 use MarkdownAlternate\Discovery\AlternateLinkHandler;
 use MarkdownAlternate\Router\RewriteHandler;
+use YahnisElsts\PluginUpdateChecker\v5\PucFactory;
 
 /**
  * Main plugin class implementing singleton pattern.
@@ -57,6 +58,12 @@ private function __construct() {
 
         $this->discovery = new AlternateLinkHandler();
         $this->discovery->register();
+
+        PucFactory::buildUpdateChecker(
+            'https://github.com/ProgressPlanner/markdown-alternate/',
+            MARKDOWN_ALTERNATE_FILE,
+            'markdown-alternate'
+        );
     }
 
     /**

vendor/composer/autoload_classmap.php

@@ -39,4 +39,5 @@
     'MarkdownAlternate\\Output\\ContentRenderer' => $baseDir . '/src/Output/ContentRenderer.php',
     'MarkdownAlternate\\Plugin' => $baseDir . '/src/Plugin.php',
     'MarkdownAlternate\\Router\\RewriteHandler' => $baseDir . '/src/Router/RewriteHandler.php',
+    'MarkdownAlternate\\Router\\UrlConverter' => $baseDir . '/src/Router/UrlConverter.php',
 );

vendor/composer/autoload_files.php

@@ -0,0 +1,10 @@
+<?php
+
+// autoload_files.php @generated by Composer
+
+$vendorDir = dirname(__DIR__);
+$baseDir = dirname($vendorDir);
+
+return array(
+    'f6d4f6bcee7247df6b777884c3e22f98' => $vendorDir . '/yahnis-elsts/plugin-update-checker/load-v5p6.php',
+);

vendor/composer/autoload_real.php

@@ -33,6 +33,18 @@ public static function getLoader()
 
         $loader->register(true);
 
+        $filesToLoad = \Composer\Autoload\ComposerStaticInit30105965ef2b463e5c24db4489fbe8a0::$files;
+        $requireFile = \Closure::bind(static function ($fileIdentifier, $file) {
+            if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
+                $GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
+
+                require $file;
+            }
+        }, null, null);
+        foreach ($filesToLoad as $fileIdentifier => $file) {
+            $requireFile($fileIdentifier, $file);
+        }
+
         return $loader;
     }
 }

vendor/composer/autoload_static.php

@@ -6,23 +6,27 @@
 
 class ComposerStaticInit30105965ef2b463e5c24db4489fbe8a0
 {
+    public static $files = array (
+        'f6d4f6bcee7247df6b777884c3e22f98' => __DIR__ . '/..' . '/yahnis-elsts/plugin-update-checker/load-v5p6.php',
+    );
+
     public static $prefixLengthsPsr4 = array (
-        'M' => 
+        'M' =>
         array (
             'MarkdownAlternate\\' => 18,
         ),
-        'L' => 
+        'L' =>
         array (
             'League\\HTMLToMarkdown\\' => 22,
         ),
     );
 
     public static $prefixDirsPsr4 = array (
-        'MarkdownAlternate\\' => 
+        'MarkdownAlternate\\' =>
         array (
             0 => __DIR__ . '/../..' . '/src',
         ),
-        'League\\HTMLToMarkdown\\' => 
+        'League\\HTMLToMarkdown\\' =>
         array (
             0 => __DIR__ . '/..' . '/league/html-to-markdown/src',
         ),
@@ -62,6 +66,7 @@ class ComposerStaticInit30105965ef2b463e5c24db4489fbe8a0
         'MarkdownAlternate\\Output\\ContentRenderer' => __DIR__ . '/../..' . '/src/Output/ContentRenderer.php',
         'MarkdownAlternate\\Plugin' => __DIR__ . '/../..' . '/src/Plugin.php',
         'MarkdownAlternate\\Router\\RewriteHandler' => __DIR__ . '/../..' . '/src/Router/RewriteHandler.php',
+        'MarkdownAlternate\\Router\\UrlConverter' => __DIR__ . '/../..' . '/src/Router/UrlConverter.php',
     );
 
     public static function getInitializer(ClassLoader $loader)

vendor/composer/installed.json

@@ -91,6 +91,59 @@
                 }
             ],
             "install-path": "../league/html-to-markdown"
+        },
+        {
+            "name": "yahnis-elsts/plugin-update-checker",
+            "version": "v5.6",
+            "version_normalized": "5.6.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/YahnisElsts/plugin-update-checker.git",
+                "reference": "a2db6871deec989a74e1f90fafc6d58ae526a879"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/YahnisElsts/plugin-update-checker/zipball/a2db6871deec989a74e1f90fafc6d58ae526a879",
+                "reference": "a2db6871deec989a74e1f90fafc6d58ae526a879",
+                "shasum": ""
+            },
+            "require": {
+                "ext-json": "*",
+                "php": ">=5.6.20"
+            },
+            "time": "2025-05-20T12:29:01+00:00",
+            "type": "library",
+            "installation-source": "dist",
+            "autoload": {
+                "files": [
+                    "load-v5p6.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Yahnis Elsts",
+                    "email": "whiteshadow@w-shadow.com",
+                    "homepage": "https://w-shadow.com/",
+                    "role": "Developer"
+                }
+            ],
+            "description": "A custom update checker for WordPress plugins and themes. Useful if you can't host your plugin in the official WP repository but still want it to support automatic updates.",
+            "homepage": "https://github.com/YahnisElsts/plugin-update-checker/",
+            "keywords": [
+                "automatic updates",
+                "plugin updates",
+                "theme updates",
+                "wordpress"
+            ],
+            "support": {
+                "issues": "https://github.com/YahnisElsts/plugin-update-checker/issues",
+                "source": "https://github.com/YahnisElsts/plugin-update-checker/tree/v5.6"
+            },
+            "install-path": "../yahnis-elsts/plugin-update-checker"
         }
     ],
     "dev": true,

vendor/composer/installed.php

@@ -3,7 +3,7 @@
         'name' => 'joost/markdown-alternate',
         'pretty_version' => 'dev-main',
         'version' => 'dev-main',
-        'reference' => '127f5adea2f9f33a649cd6dfe24ef2a84136cee5',
+        'reference' => 'c71c82c2e7f217f38f2a25ff39c35707cc0d9704',
         'type' => 'wordpress-plugin',
         'install_path' => __DIR__ . '/../../',
         'aliases' => array(),
@@ -13,7 +13,7 @@
         'joost/markdown-alternate' => array(
             'pretty_version' => 'dev-main',
             'version' => 'dev-main',
-            'reference' => '127f5adea2f9f33a649cd6dfe24ef2a84136cee5',
+            'reference' => 'c71c82c2e7f217f38f2a25ff39c35707cc0d9704',
             'type' => 'wordpress-plugin',
             'install_path' => __DIR__ . '/../../',
             'aliases' => array(),
@@ -28,5 +28,14 @@
             'aliases' => array(),
             'dev_requirement' => false,
         ),
+        'yahnis-elsts/plugin-update-checker' => array(
+            'pretty_version' => 'v5.6',
+            'version' => '5.6.0.0',
+            'reference' => 'a2db6871deec989a74e1f90fafc6d58ae526a879',
+            'type' => 'library',
+            'install_path' => __DIR__ . '/../yahnis-elsts/plugin-update-checker',
+            'aliases' => array(),
+            'dev_requirement' => false,
+        ),
     ),
 );

vendor/composer/platform_check.php

@@ -19,8 +19,7 @@
             echo 'Composer detected issues in your platform:' . PHP_EOL.PHP_EOL . str_replace('You are running '.PHP_VERSION.'.', '', implode(PHP_EOL, $issues)) . PHP_EOL.PHP_EOL;
         }
     }
-    trigger_error(
-        'Composer detected issues in your platform: ' . implode(' ', $issues),
-        E_USER_ERROR
+    throw new \RuntimeException(
+        'Composer detected issues in your platform: ' . implode(' ', $issues)
     );
 }

vendor/yahnis-elsts/plugin-update-checker/Puc/v5/PucFactory.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace YahnisElsts\PluginUpdateChecker\v5;
+
+if ( !class_exists(PucFactory::class, false) ):
+
+	class PucFactory extends \YahnisElsts\PluginUpdateChecker\v5p6\PucFactory {
+	}
+
+endif;

vendor/yahnis-elsts/plugin-update-checker/Puc/v5p6/Autoloader.php

@@ -0,0 +1,86 @@
+<?php
+
+namespace YahnisElsts\PluginUpdateChecker\v5p6;
+
+if ( !class_exists(Autoloader::class, false) ):
+
+	class Autoloader {
+		const DEFAULT_NS_PREFIX = 'YahnisElsts\\PluginUpdateChecker\\';
+
+		private $prefix;
+		private $rootDir;
+		private $libraryDir;
+
+		private $staticMap;
+
+		public function __construct() {
+			$this->rootDir = dirname(__FILE__) . '/';
+
+			$namespaceWithSlash = __NAMESPACE__ . '\\';
+			$this->prefix = $namespaceWithSlash;
+
+			$this->libraryDir = $this->rootDir . '../..';
+			if ( !self::isPhar() ) {
+				$this->libraryDir = realpath($this->libraryDir);
+			}
+			$this->libraryDir = $this->libraryDir . '/';
+
+			//Usually, dependencies like Parsedown are in the global namespace,
+			//but if someone adds a custom namespace to the entire library, they
+			//will be in the same namespace as this class.
+			$isCustomNamespace = (
+				substr($namespaceWithSlash, 0, strlen(self::DEFAULT_NS_PREFIX)) !== self::DEFAULT_NS_PREFIX
+			);
+			$libraryPrefix = $isCustomNamespace ? $namespaceWithSlash : '';
+
+			$this->staticMap = array(
+				$libraryPrefix . 'PucReadmeParser' => 'vendor/PucReadmeParser.php',
+				$libraryPrefix . 'Parsedown'       => 'vendor/Parsedown.php',
+			);
+
+			//Add the generic, major-version-only factory class to the static map.
+			$versionSeparatorPos = strrpos(__NAMESPACE__, '\\v');
+			if ( $versionSeparatorPos !== false ) {
+				$versionSegment = substr(__NAMESPACE__, $versionSeparatorPos + 1);
+				$pointPos = strpos($versionSegment, 'p');
+				if ( ($pointPos !== false) && ($pointPos > 1) ) {
+					$majorVersionSegment = substr($versionSegment, 0, $pointPos);
+					$majorVersionNs = __NAMESPACE__ . '\\' . $majorVersionSegment;
+					$this->staticMap[$majorVersionNs . '\\PucFactory'] =
+						'Puc/' . $majorVersionSegment . '/Factory.php';
+				}
+			}
+
+			spl_autoload_register(array($this, 'autoload'));
+		}
+
+		/**
+		 * Determine if this file is running as part of a Phar archive.
+		 *
+		 * @return bool
+		 */
+		private static function isPhar() {
+			//Check if the current file path starts with "phar://".
+			static $pharProtocol = 'phar://';
+			return (substr(__FILE__, 0, strlen($pharProtocol)) === $pharProtocol);
+		}
+
+		public function autoload($className) {
+			if ( isset($this->staticMap[$className]) && file_exists($this->libraryDir . $this->staticMap[$className]) ) {
+				include($this->libraryDir . $this->staticMap[$className]);
+				return;
+			}
+
+			if ( strpos($className, $this->prefix) === 0 ) {
+				$path = substr($className, strlen($this->prefix));
+				$path = str_replace(array('_', '\\'), '/', $path);
+				$path = $this->rootDir . $path . '.php';
+
+				if ( file_exists($path) ) {
+					include $path;
+				}
+			}
+		}
+	}
+
+endif;