From 12436dfff7ede724af8b5471de32fd2973ec0149 Mon Sep 17 00:00:00 2001
From: Arnaud Nauwynck <arnaud.nauwynck@gmail.com>
Date: Wed, 25 Sep 2019 07:52:51 +0200
Subject: [PATCH] Fixed sort order of descriptor xml files for reproducible
 build

---
 .../plexus/metadata/DefaultMetadataGenerator.java  | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/plexus-component-metadata/src/main/java/org/codehaus/plexus/metadata/DefaultMetadataGenerator.java b/plexus-component-metadata/src/main/java/org/codehaus/plexus/metadata/DefaultMetadataGenerator.java
index daf99f8e1..ae77de97f 100644
--- a/plexus-component-metadata/src/main/java/org/codehaus/plexus/metadata/DefaultMetadataGenerator.java
+++ b/plexus-component-metadata/src/main/java/org/codehaus/plexus/metadata/DefaultMetadataGenerator.java
@@ -26,6 +26,7 @@
 import java.io.FileOutputStream;
 import java.io.OutputStreamWriter;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.Comparator;
@@ -148,7 +149,18 @@ public int compare( ComponentDescriptor d1, ComponentDescriptor d2 )
         {
             File[] files = request.componentDescriptorDirectory.listFiles();
 
-            for ( File file : files )
+            // Sort the descriptor files by name to make the output reproducible
+            List<File> sortedFiles = new ArrayList<File>( Arrays.asList( files) );
+            Collections.sort( sortedFiles, new Comparator<File>()
+            {
+                public int compare( File f1, File f2 )
+                {
+                    return f1.getName().compareTo( f2.getName() );
+                }
+            });
+
+            
+            for ( File file : sortedFiles )
             {
                 if ( file.getName().endsWith( ".xml" ) && !file.getName().equals( "plexus.xml" ) )
                 {