From dd1922bd2481bd3077bb22c605d0d0d8261a5d29 Mon Sep 17 00:00:00 2001
From: Guillaume Nodet <gnodet@gmail.com>
Date: Wed, 31 May 2023 09:40:48 +0200
Subject: [PATCH] [MNG-7796] Be lenient when using toRealPath (#1131)

---
 .../main/java/org/apache/maven/cli/MavenCli.java  | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/maven-embedder/src/main/java/org/apache/maven/cli/MavenCli.java b/maven-embedder/src/main/java/org/apache/maven/cli/MavenCli.java
index 08187d1522..11053828af 100644
--- a/maven-embedder/src/main/java/org/apache/maven/cli/MavenCli.java
+++ b/maven-embedder/src/main/java/org/apache/maven/cli/MavenCli.java
@@ -349,12 +349,7 @@ public class MavenCli {
                 isAltFile = arg.equals(String.valueOf(CLIManager.ALTERNATE_POM_FILE)) || arg.equals("file");
             }
         }
-        try {
-            topDirectory = topDirectory.toAbsolutePath().toRealPath();
-        } catch (IOException e) {
-            System.err.println("Error computing real path from " + topDirectory + ": " + e.getMessage());
-            throw new ExitException(1);
-        }
+        topDirectory = getCanonicalPath(topDirectory);
         cliRequest.topDirectory = topDirectory;
         // We're very early in the process and we don't have the container set up yet,
         // so we on searchAcceptableRootDirectory method to find us acceptable directory.
@@ -1602,6 +1597,14 @@ public class MavenCli {
         return interpolator;
     }
 
+    private static Path getCanonicalPath(Path path) {
+        try {
+            return path.toRealPath();
+        } catch (IOException e) {
+            return getCanonicalPath(path.getParent()).resolve(path.getFileName());
+        }
+    }
+
     static class ExitException extends Exception {
         int exitCode;