Add handling of ctrl-C on windows for php 7.4+

src/Composer/Command/CreateProjectCommand.php

@@ -367,6 +367,17 @@ EOT
                 });
             }
         }
+        // handler Ctrl+C for Windows on PHP 7.4+
+        if (function_exists('sapi_windows_set_ctrl_handler')) {
+            @mkdir($directory, 0777, true);
+            if ($realDir = realpath($directory)) {
+                sapi_windows_set_ctrl_handler(function () use ($realDir) {
+                    $fs = new Filesystem();
+                    $fs->removeDirectory($realDir);
+                    exit(130);
+                });
+            }
+        }
 
         // avoid displaying 9999999-dev as version if dev-master was selected
         if ($package instanceof AliasPackage && $package->getPrettyVersion() === VersionParser::DEV_MASTER_ALIAS) {

src/Composer/Installer/InstallationManager.php

@@ -195,10 +195,11 @@ class InstallationManager
             }
         };
 
-        // handler Ctrl+C for unix-like systems
+        $handleInterruptsUnix = function_exists('pcntl_async_signals') && function_exists('pcntl_signal');
-        $handleInterrupts = function_exists('pcntl_async_signals') && function_exists('pcntl_signal');
+        $handleInterruptsWindows = function_exists('sapi_windows_set_ctrl_handler');
         $prevHandler = null;
-        if ($handleInterrupts) {
+        $windowsHandler = null;
+        if ($handleInterruptsUnix) {
             pcntl_async_signals(true);
             $prevHandler = pcntl_signal_get_handler(SIGINT);
             pcntl_signal(SIGINT, function ($sig) use ($runCleanup, $prevHandler) {
@@ -211,6 +212,14 @@ class InstallationManager
                 exit(130);
             });
         }
+        if ($handleInterruptsWindows) {
+            $windowsHandler = function () use ($runCleanup) {
+                $runCleanup();
+
+                exit(130);
+            };
+            sapi_windows_set_ctrl_handler($windowsHandler);
+        }
 
         try {
             foreach ($operations as $index => $operation) {
@@ -317,16 +326,22 @@ class InstallationManager
         } catch (\Exception $e) {
             $runCleanup();
 
-            if ($handleInterrupts) {
+            if ($handleInterruptsUnix) {
                 pcntl_signal(SIGINT, $prevHandler);
             }
+            if ($handleInterruptsWindows) {
+                sapi_windows_set_ctrl_handler($prevHandler, false);
+            }
 
             throw $e;
         }
 
-        if ($handleInterrupts) {
+        if ($handleInterruptsUnix) {
             pcntl_signal(SIGINT, $prevHandler);
         }
+        if ($handleInterruptsWindows) {
+            sapi_windows_set_ctrl_handler($prevHandler, false);
+        }
 
         // do a last write so that we write the repository even if nothing changed
         // as that can trigger an update of some files like InstalledVersions.php if