File reproducible-tstamp.patch of Package ant

diff -urEbwB apache-ant-1.9.10.orig/src/main/org/apache/tools/ant/taskdefs/Tstamp.java apache-ant-1.9.10/src/main/org/apache/tools/ant/taskdefs/Tstamp.java
--- apache-ant-1.9.10.orig/src/main/org/apache/tools/ant/taskdefs/Tstamp.java	2024-02-24 14:08:30.351112514 +0100
+++ apache-ant-1.9.10/src/main/org/apache/tools/ant/taskdefs/Tstamp.java	2024-02-24 14:20:57.008356741 +0100
@@ -46,6 +46,8 @@
  */
 public class Tstamp extends Task {
 
+    private static final String ENV_SOURCE_DATE_EPOCH = "SOURCE_DATE_EPOCH";
+
     private Vector customFormats = new Vector();
     private String prefix = "";
 
@@ -71,6 +73,20 @@
         try {
             Date d = getNow();
 
+            // Honour reproducible builds https://reproducible-builds.org/specs/source-date-epoch/#idm55
+            final String epoch = System.getenv(ENV_SOURCE_DATE_EPOCH);
+            try {
+                if (epoch != null) {
+                    // Value of SOURCE_DATE_EPOCH will be an integer, representing seconds.
+                    d = new Date(Long.parseLong(epoch) * 1000L);
+                }
+                log("Honouring environment variable " + ENV_SOURCE_DATE_EPOCH + " which has been set to " + epoch);
+            } catch(NumberFormatException e) {
+                // ignore
+                log("Ignoring invalid value '" + epoch + "' for " + ENV_SOURCE_DATE_EPOCH
+                        + " environment variable", Project.MSG_DEBUG);
+            }
+
             Enumeration i = customFormats.elements();
             while (i.hasMoreElements()) {
                 CustomFormat cts = (CustomFormat) i.nextElement();
Only in apache-ant-1.9.10/src/main/org/apache/tools/ant/taskdefs: Tstamp.java.orig
Only in apache-ant-1.9.10/src/main/org/apache/tools/ant/taskdefs: Tstamp.java.rej