Re-apply the CS fixes and update the .travis.yml file

.travis.yml

@@ -1,37 +1,34 @@
 language: php
-
-git:
-  depth: 1
+dist: xenial
 
 cache:
   directories:
     - $HOME/.composer/cache
 
-sudo: false
-
 env:
   global:
     - COMPOSER_ALLOW_XDEBUG=0
-    - COMPOSER_ROOT_VERSION='2.5.0'
+    - COMPOSER_ROOT_VERSION='2.7.0'
 
 matrix:
   include:
     # Latest dependencies with all PHP versions
     - php: 7.1
     - php: 7.2
+    - php: 7.3
 
     # Ignore the platform requirements for the upcoming PHP version
     - php: nightly
       env: COMPOSER_FLAGS='--ignore-platform-reqs'
 
     # Generate the coverage with the latest PHP version
-    - php: 7.2
+    - php: 7.3
       env: COVERAGE='--coverage-clover build/logs/clover.xml'
 
     # Lowest dependencies with the oldest and latest PHP versions
     - php: 7.1
       env: COMPOSER_FLAGS='--prefer-lowest --prefer-stable' SYMFONY_DEPRECATIONS_HELPER='weak_vendors'
-    - php: 7.2
+    - php: 7.3
       env: COMPOSER_FLAGS='--prefer-lowest --prefer-stable' SYMFONY_DEPRECATIONS_HELPER='weak_vendors'
   allow_failures:
     - php: nightly

src/Composer/ArtifactsPlugin.php

@@ -90,17 +90,17 @@ private function getComposerInformation(PackageInterface $package): ?array
         $zip = new \ZipArchive();
         $zip->open($package->getDistUrl());
 
-        if (0 == $zip->numFiles) {
+        if (!$zip->numFiles) {
             return null;
         }
 
         $foundFileIndex = $this->locateFile($zip, 'composer.json');
+
         if (false === $foundFileIndex) {
             return null;
         }
 
         $configurationFileName = $zip->getNameIndex($foundFileIndex);
-
         $composerFile = "zip://{$package->getDistUrl()}#$configurationFileName";
         $json = file_get_contents($composerFile);
 
@@ -115,27 +115,29 @@ private function locateFile(\ZipArchive $zip, string $filename)
         $indexOfShortestMatch = false;
         $lengthOfShortestMatch = -1;
 
-        for ($i = 0; $i < $zip->numFiles; $i++) {
+        for ($i = 0; $i < $zip->numFiles; ++$i) {
             $stat = $zip->statIndex($i);
-            if (strcmp(basename($stat['name']), $filename) === 0) {
-                $directoryName = dirname($stat['name']);
-                if ($directoryName === '.') {
-                    //if composer.json is in root directory
-                    //it has to be the one to use.
+
+            if (0 === strcmp(basename($stat['name']), $filename)) {
+                $directoryName = \dirname($stat['name']);
+
+                if ('.' === $directoryName) {
+                    // If composer.json is in root directory, it has to be the one to use
                     return $i;
                 }
 
-                if (strpos($directoryName, '\\') !== false ||
-                    strpos($directoryName, '/') !== false) {
-                    //composer.json files below first directory are rejected
+                if (false !== strpos($directoryName, '\\') || false !== strpos($directoryName, '/')) {
+                    // composer.json files below first directory are rejected
                     continue;
                 }
 
-                $length = strlen($stat['name']);
-                if ($indexOfShortestMatch === false || $length < $lengthOfShortestMatch) {
-                    //Check it's not a directory.
+                $length = \strlen($stat['name']);
+
+                if (false === $indexOfShortestMatch || $length < $lengthOfShortestMatch) {
+                    // Check it's not a directory
                     $contents = $zip->getFromIndex($i);
-                    if ($contents !== false) {
+
+                    if (false !== $contents) {
                         $indexOfShortestMatch = $i;
                         $lengthOfShortestMatch = $length;
                     }