From f38a08e61d0dbda3c6f6bd1141c1cd10a9e3f0f2 Mon Sep 17 00:00:00 2001
From: Stephen Colebourne <scolebourne@joda.org>
Date: Sun, 15 Sep 2024 23:11:14 +0100
Subject: [PATCH] Update tzdb handling (#789)

* Update parser and tests to handle changes to TZDB data
* WET, CET and EET European zones are saved
* MET zone is mapped to CET
* American zones like EST will be auto-normalized
---
 .../org/joda/time/tz/ZoneInfoCompiler.java    | 12 ++++++++--
 .../format/TestDateTimeFormatterBuilder.java  | 24 +++++++++----------
 2 files changed, 22 insertions(+), 14 deletions(-)

diff --git a/src/main/java/org/joda/time/tz/ZoneInfoCompiler.java b/src/main/java/org/joda/time/tz/ZoneInfoCompiler.java
index 49c793c2e..57a7944d5 100644
--- a/src/main/java/org/joda/time/tz/ZoneInfoCompiler.java
+++ b/src/main/java/org/joda/time/tz/ZoneInfoCompiler.java
@@ -636,7 +636,13 @@ public void parseDataFile(BufferedReader in, boolean backward) throws IOExceptio
                     // links in "backward" are deprecated names
                     // links in other files should be kept
                     // special case a few to try to repair terrible damage to tzdb
-                    if (backward || alias.equals("US/Pacific-New") || alias.startsWith("Etc/") || alias.equals("GMT")) {
+                    if (alias.equals("WET") || alias.equals("CET") || alias.equals("EET")) {
+                        iGoodLinks.add(real);
+                        iGoodLinks.add(alias);
+                    } else if (alias.equals("MET")) {
+                        iBackLinks.add("CET");  // map MET -> CET (not Europe/Brussels)
+                        iBackLinks.add(alias);
+                    } else if (backward || alias.equals("US/Pacific-New") || alias.startsWith("Etc/") || alias.equals("GMT")) {
                         iBackLinks.add(real);
                         iBackLinks.add(alias);
                     } else {
@@ -962,7 +968,9 @@ public void addRecurring(DateTimeZoneBuilder builder, int standardMillis, String
 
             // if negative SAVE values, then patch standard millis and name format
             if (negativeSave < 0) {
-                System.out.println("Fixed negative save values for rule '" + iRules.get(0).iName + "'");
+                if (ZoneInfoLogger.verbose()) {
+                    System.out.println("Fixed negative save values for rule '" + iRules.get(0).iName + "'");
+                }
                 standardMillis += negativeSave;
                 int slashPos = nameFormat.indexOf("/");
                 if (slashPos > 0) {
diff --git a/src/test/java/org/joda/time/format/TestDateTimeFormatterBuilder.java b/src/test/java/org/joda/time/format/TestDateTimeFormatterBuilder.java
index 102760d62..5aa739bfa 100644
--- a/src/test/java/org/joda/time/format/TestDateTimeFormatterBuilder.java
+++ b/src/test/java/org/joda/time/format/TestDateTimeFormatterBuilder.java
@@ -21,15 +21,15 @@
 import java.util.Locale;
 import java.util.Map;
 
-import junit.framework.AssertionFailedError;
-import junit.framework.TestCase;
-import junit.framework.TestSuite;
-
 import org.joda.time.DateTime;
 import org.joda.time.DateTimeFieldType;
 import org.joda.time.DateTimeZone;
 import org.joda.time.LocalDateTime;
 
+import junit.framework.AssertionFailedError;
+import junit.framework.TestCase;
+import junit.framework.TestSuite;
+
 /**
  * This class is a Junit unit test for DateTimeFormatterBuilder.
  *
@@ -547,24 +547,24 @@ public void test_printParseZoneEtcGMT10_suffix() {
         assertEquals(dt, f.parseDateTime("2007-03-04 12:30 Etc/GMT+10]"));
     }
 
-    public void test_printParseZoneMET() {
+    public void test_printParseZoneCET() {
         DateTimeFormatterBuilder bld = new DateTimeFormatterBuilder()
                 .appendPattern("yyyy-MM-dd HH:mm ZZZ");
         DateTimeFormatter f = bld.toFormatter();
 
-        DateTime dt = new DateTime(2007, 3, 4, 12, 30, 0, DateTimeZone.forID("MET"));
-        assertEquals("2007-03-04 12:30 MET", f.print(dt));
-        assertEquals(dt, f.parseDateTime("2007-03-04 12:30 MET"));
+        DateTime dt = new DateTime(2007, 3, 4, 12, 30, 0, DateTimeZone.forID("CET"));
+        assertEquals("2007-03-04 12:30 CET", f.print(dt));
+        assertEquals(dt, f.parseDateTime("2007-03-04 12:30 CET"));
     }
 
-    public void test_printParseZoneMET_suffix() {
+    public void test_printParseZoneCET_suffix() {
         DateTimeFormatterBuilder bld = new DateTimeFormatterBuilder()
                 .appendPattern("yyyy-MM-dd HH:mm ZZZ").appendLiteral(']');
         DateTimeFormatter f = bld.toFormatter();
 
-        DateTime dt = new DateTime(2007, 3, 4, 12, 30, 0, DateTimeZone.forID("MET"));
-        assertEquals("2007-03-04 12:30 MET]", f.print(dt));
-        assertEquals(dt, f.parseDateTime("2007-03-04 12:30 MET]"));
+        DateTime dt = new DateTime(2007, 3, 4, 12, 30, 0, DateTimeZone.forID("CET"));
+        assertEquals("2007-03-04 12:30 CET]", f.print(dt));
+        assertEquals(dt, f.parseDateTime("2007-03-04 12:30 CET]"));
     }
 
     public void test_printParseZoneBahiaBanderas() {