From abf40ceb404e00593e2f9ac6e9adbb8a1d424d55 Mon Sep 17 00:00:00 2001
From: noniagriconomie <antoine.makdessi@agriconomie.com>
Date: Fri, 21 Aug 2020 19:05:22 +0200
Subject: [PATCH] Improve link script with rollback when using symlink

---
 link | 25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

diff --git a/link b/link
index 1525ab0cb9..639006e2ca 100755
--- a/link
+++ b/link
@@ -18,19 +18,22 @@ require __DIR__.'/src/Symfony/Component/Filesystem/Filesystem.php';
 use Symfony\Component\Filesystem\Filesystem;
 
 /**
- * Links dependencies to components to a local clone of the main symfony/symfony GitHub repository.
+ * Links dependencies of a project to a local clone of the main symfony/symfony GitHub repository.
  *
  * @author Kévin Dunglas <dunglas@gmail.com>
  */
 
 $copy = false !== $k = array_search('--copy', $argv, true);
 $copy && array_splice($argv, $k, 1);
+$rollback = false !== $k = array_search('--rollback', $argv, true);
+$rollback && array_splice($argv, $k, 1);
 $pathToProject = $argv[1] ?? getcwd();
 
 if (!is_dir("$pathToProject/vendor/symfony")) {
-    echo 'Link (or copy) dependencies to components to a local clone of the main symfony/symfony GitHub repository.'.PHP_EOL.PHP_EOL;
+    echo 'Links dependencies of a project to a local clone of the main symfony/symfony GitHub repository.'.PHP_EOL.PHP_EOL;
     echo "Usage: $argv[0] /path/to/the/project".PHP_EOL;
     echo '       Use `--copy` to copy dependencies instead of symlink'.PHP_EOL.PHP_EOL;
+    echo '       Use `--rollback` to rollback'.PHP_EOL.PHP_EOL;
     echo "The directory \"$pathToProject\" does not exist or the dependencies are not installed, did you forget to run \"composer install\" in your project?".PHP_EOL;
     exit(1);
 }
@@ -44,7 +47,6 @@ $directories = array_merge(...array_values(array_map(function ($part) {
 }, $braces)));
 
 $directories[] = __DIR__.'/src/Symfony/Contracts';
-
 foreach ($directories as $dir) {
     if ($filesystem->exists($composer = "$dir/composer.json")) {
         $sfPackages[json_decode(file_get_contents($composer))->name] = $dir;
@@ -53,12 +55,19 @@ foreach ($directories as $dir) {
 
 foreach (glob("$pathToProject/vendor/symfony/*", GLOB_ONLYDIR | GLOB_NOSORT) as $dir) {
     $package = 'symfony/'.basename($dir);
-    if (!$copy && is_link($dir)) {
-        echo "\"$package\" is already a symlink, skipping.".PHP_EOL;
+
+    if (!isset($sfPackages[$package])) {
         continue;
     }
 
-    if (!isset($sfPackages[$package])) {
+    if ($rollback) {
+        $filesystem->remove($dir);
+        echo "\"$package\" has been rollback from \"$sfPackages[$package]\".".PHP_EOL;
+        continue;
+    }
+
+    if (!$copy && is_link($dir)) {
+        echo "\"$package\" is already a symlink, skipping.".PHP_EOL;
         continue;
     }
 
@@ -78,3 +87,7 @@ foreach (glob("$pathToProject/vendor/symfony/*", GLOB_ONLYDIR | GLOB_NOSORT) as
 foreach (glob("$pathToProject/var/cache/*", GLOB_NOSORT) as $cacheDir) {
     $filesystem->remove($cacheDir);
 }
+
+if ($rollback) {
+    echo PHP_EOL."Rollback done, do not forget to run \"composer install\" in your project \"$pathToProject\".".PHP_EOL;
+}