Fix errors reported by PHPStan

Author: mvorisek

phpstan.neon.dist

@@ -12,34 +12,8 @@ parameters:
         # relax strict rules
         - '~^Only booleans are allowed in .+, .+ given( on the (left|right) side)?\.~'
         - '~^Construct empty\(\) is not allowed\. Use more strict comparison\.~'
-        - '~^Loose comparison via "[=!]=" is not allowed\.~'
-        
-        # TODO
-        -
-            message: '~^Anonymous function uses \$this assigned to variable \$self. Use \$this directly in the function body\.$~'
-            path: 'src/ExtensionInstaller.php'
-            count: 3
+
         -
             message: '~^Constant RCMAIL_VERSION not found\.$~'
             path: 'src/ExtensionInstaller.php'
             count: 3
-        -
-            message: '~^Method Roundcube\\Composer\\ExtensionInstaller::install\(\) should return React\\Promise\\PromiseInterface<void\|null>|null but return statement is missing\.$~'
-            path: 'src/ExtensionInstaller.php'
-            count: 3
-        -
-            message: '~^Undefined variable: \$rootdir$~'
-            path: 'src/ExtensionInstaller.php'
-            count: 1
-        -
-            message: '~^Short ternary operator is not allowed\. Use null coalesce operator if applicable or consider using long ternary\.$~'
-            path: 'src/ExtensionInstaller.php'
-            count: 1
-        -
-            message: '~^Call to function in_array\(\) requires parameter #3 to be set\.$~'
-            path: 'src/PluginInstaller.php'
-            count: 1
-        -
-            message: '~^Call to function array_search\(\) requires parameter #3 to be set\.$~'
-            path: 'src/PluginInstaller.php'
-            count: 1

src/ExtensionInstaller.php

@@ -66,7 +66,7 @@ public function install(InstalledRepositoryInterface $repo, PackageInterface $pa
             $package_dir  = $this->getVendorDir() . DIRECTORY_SEPARATOR . $package_name;
             $extra        = $package->getExtra();
 
-            if (is_writeable($config_file) && php_sapi_name() == 'cli' && $this->confirmInstall($package_name)) {
+            if (is_writeable($config_file) && php_sapi_name() === 'cli' && $this->confirmInstall($package_name)) {
                 $this->rcubeAlterConfig($package_name);
             }
 
@@ -118,6 +118,8 @@ public function install(InstalledRepositoryInterface $repo, PackageInterface $pa
 
         // If not, execute the code right away (composer v1, or v2 without async)
         $postInstall();
+
+        return null;
     }
 
     /**
@@ -194,6 +196,8 @@ public function update(InstalledRepositoryInterface $repo, PackageInterface $ini
 
         // If not, execute the code right away (composer v1, or v2 without async)
         $postUpdate();
+
+        return null;
     }
 
     /**
@@ -239,6 +243,8 @@ public function uninstall(InstalledRepositoryInterface $repo, PackageInterface $
 
         // If not, execute the code right away (composer v1, or v2 without async)
         $postUninstall();
+
+        return null;
     }
 
     /**
@@ -275,10 +281,6 @@ private function rcubeVersionCheck($package)
         // read rcube version from iniset
         $rcubeVersion = self::versionNormalize(RCMAIL_VERSION);
 
-        if (empty($rcubeVersion)) {
-            throw new \Exception("Unable to find a Roundcube installation in $rootdir");
-        }
-
         $extra = $package->getExtra();
 
         if (!empty($extra['roundcube'])) {
@@ -309,7 +311,10 @@ private function rcubeAlterConfig($package_name, $add = true)
         }
 
         if (!empty($config) && is_writeable($config_file)) {
-            $config_template = @file_get_contents($config_file) ?: '';
+            $config_template = @file_get_contents($config_file);
+            if ($config_template === false) {
+                $config_template = '';
+            }
 
             if ($config = $this->getConfig($package_name, $config, $add)) {
                 list($config_name, $config_val) = $config;
@@ -342,7 +347,7 @@ private function rcubeAlterConfig($package_name, $add = true)
             }
         }
 
-        if ($success && php_sapi_name() == 'cli') {
+        if ($success && php_sapi_name() === 'cli') {
             $this->io->write("<info>Updated local config at $config_file</info>");
         }
 
@@ -417,7 +422,7 @@ private function rcubeRunScript($script, PackageInterface $package)
     /**
      * normalize Roundcube version string
      */
-    private static function versionNormalize($version)
+    private static function versionNormalize(string $version): string
     {
         $parser = new VersionParser;
 

src/PluginInstaller.php

@@ -38,14 +38,14 @@ protected function getConfig($package_name, $config, $add )
         $cur_config = !empty($config['plugins']) ? ((array) $config['plugins']) : [];
         $new_config = $cur_config;
 
-        if ($add && !in_array($package_name, $new_config)) {
+        if ($add && !in_array($package_name, $new_config, true)) {
             $new_config[] = $package_name;
         }
-        elseif (!$add && ($i = array_search($package_name, $new_config)) !== false) {
+        elseif (!$add && ($i = array_search($package_name, $new_config, true)) !== false) {
             unset($new_config[$i]);
         }
 
-        if ($new_config != $cur_config) {
+        if ($new_config !== $cur_config) {
             $config_val = count($new_config) > 0 ? "[\n\t'" . join("',\n\t'", $new_config) . "',\n];" : "[];";
             $result = ['plugins', $config_val];
         }

src/SkinInstaller.php

@@ -38,14 +38,14 @@ protected function getConfig($package_name, $config, $add)
         $cur_config = !empty($config['skin']) ? $config['skin'] : null;
         $new_config = $cur_config;
 
-        if ($add && $new_config != $package_name) {
+        if ($add && $new_config !== $package_name) {
             $new_config = $package_name;
         }
-        elseif (!$add && $new_config == $package_name) {
+        elseif (!$add && $new_config === $package_name) {
             $new_config = null;
         }
 
-        if ($new_config != $cur_config) {
+        if ($new_config !== $cur_config) {
             $config_val = !empty($new_config) ? "'$new_config';" : null;
             $result = ['skin', $config_val];
         }