8275745: Reproducible copyright headers

Backport-of: a0227965bb8d1d49718794d67f8a4cfeebc9bec2

make/autoconf/basic_tools.m4

@@ -356,6 +356,14 @@ AC_DEFUN_ONCE([BASIC_SETUP_COMPLEX_TOOLS],
   fi
   AC_SUBST(IS_GNU_TIME)
 
+  # Check if it's GNU date
+  check_date=`$DATE --version 2>&1 | $GREP GNU`
+  if test "x$check_date" != x; then
+    IS_GNU_DATE=yes
+  else
+    IS_GNU_DATE=no
+  fi
+
   if test "x$OPENJDK_TARGET_OS" = "xmacosx"; then
     UTIL_REQUIRE_PROGS(DSYMUTIL, dsymutil)
     UTIL_REQUIRE_PROGS(MIG, mig)

make/autoconf/jdk-options.m4

@@ -216,6 +216,12 @@ AC_DEFUN_ONCE([JDKOPT_SETUP_JDK_OPTIONS],
     AC_MSG_ERROR([Copyright year must have a value])
   elif test "x$with_copyright_year" != x; then
     COPYRIGHT_YEAR="$with_copyright_year"
+  elif test "x$SOURCE_DATE_EPOCH" != x; then
+    if test "x$IS_GNU_DATE" = xyes; then
+      COPYRIGHT_YEAR=`date --date=@$SOURCE_DATE_EPOCH +%Y`
+    else
+      COPYRIGHT_YEAR=`date -j -f %s $SOURCE_DATE_EPOCH +%Y`
+    fi
   else
     COPYRIGHT_YEAR=`$DATE +'%Y'`
   fi

make/jdk/src/classes/build/tools/cldrconverter/CLDRConverter.java

@@ -114,6 +114,7 @@ public class CLDRConverter {
         ResourceBundle.Control.getControl(ResourceBundle.Control.FORMAT_DEFAULT);
 
     private static Set<String> AVAILABLE_TZIDS;
+    static int copyrightYear;
     private static String zoneNameTempFile;
     private static String tzDataDir;
     private static final Map<String, String> canonicalTZMap = new HashMap<>();
@@ -217,6 +218,10 @@ public static void main(String[] args) throws Exception {
                         verbose = true;
                         break;
 
+                    case "-year":
+                        copyrightYear = Integer.parseInt(args[++i]);
+                        break;
+
                     case "-zntempfile":
                         zoneNameTempFile = args[++i];
                         break;
@@ -235,7 +240,7 @@ public static void main(String[] args) throws Exception {
                     }
                 }
             } catch (RuntimeException e) {
-                severe("unknown or imcomplete arg(s): " + currentArg);
+                severe("unknown or incomplete arg(s): " + currentArg);
                 usage();
                 System.exit(1);
             }
@@ -260,6 +265,10 @@ public static void main(String[] args) throws Exception {
             setupBaseLocales("en-US");
         }
 
+        if (copyrightYear == 0) {
+            copyrightYear = ZonedDateTime.now(ZoneId.of("America/Los_Angeles")).getYear();
+        }
+
         bundleGenerator = new ResourceBundleGenerator();
 
         // Parse data independent of locales
@@ -292,6 +301,7 @@ private static void usage() {
                 + "\t-basemodule    generates bundles that go into java.base module%n"
                 + "\t-baselocales loc(,loc)*      locales that go into the base module%n"
                 + "\t-o dir         output directory (default: ./build/gensrc)%n"
+                + "\t-year year     copyright year in output%n"
                 + "\t-zntempfile    template file for java.time.format.ZoneName.java%n"
                 + "\t-tzdatadir     tzdata directory for java.time.format.ZoneName.java%n"
                 + "\t-utf8          use UTF-8 rather than \\uxxxx (for debug)%n");

make/jdk/src/classes/build/tools/cldrconverter/CopyrightHeaders.java

@@ -26,6 +26,7 @@
 package build.tools.cldrconverter;
 
 import java.util.Calendar;
+import java.util.Date;
 import java.util.GregorianCalendar;
 import java.util.Locale;
 import java.util.TimeZone;
@@ -131,25 +132,18 @@ class CopyrightHeaders {
         " * questions.\n" +
         " */\n";
 
-    static String getOracleCopyright() {
-        int year = getYear();
+    static String getOracleCopyright(int year) {
         return String.format(year > 2012 ? ORACLE_AFTER2012 : ORACLE2012, year);
     }
 
     static String getUnicodeCopyright() {
         return UNICODE;
     }
 
-    static String getOpenJDKCopyright() {
-        int year = getYear();
+    static String getOpenJDKCopyright(int year) {
         return String.format(year > 2012 ? OPENJDK_AFTER2012 : OPENJDK2012, year);
     }
 
-    private static int getYear() {
-        return new GregorianCalendar(TimeZone.getTimeZone("America/Los_Angeles"),
-                                         Locale.US).get(Calendar.YEAR);
-    }
-
     // no instantiation
     private CopyrightHeaders() {
     }

make/jdk/src/classes/build/tools/cldrconverter/ResourceBundleGenerator.java

@@ -198,7 +198,7 @@ public void generateBundle(String packageName, String baseName, String localeID,
 
         try (PrintWriter out = new PrintWriter(file, encoding)) {
             // Output copyright headers
-            out.println(CopyrightHeaders.getOpenJDKCopyright());
+            out.println(CopyrightHeaders.getOpenJDKCopyright(CLDRConverter.copyrightYear));
             out.println(CopyrightHeaders.getUnicodeCopyright());
 
             if (useJava) {
@@ -266,7 +266,7 @@ public void generateMetaInfo(Map<String, SortedSet<String>> metaInfo) throws IOE
         CLDRConverter.info("Generating file " + file);
 
         try (PrintWriter out = new PrintWriter(file, "us-ascii")) {
-            out.printf(CopyrightHeaders.getOpenJDKCopyright());
+            out.printf(CopyrightHeaders.getOpenJDKCopyright(CLDRConverter.copyrightYear));
 
             out.printf((CLDRConverter.isBaseModule ? "package sun.util.cldr;\n\n" :
                                   "package sun.util.resources.cldr.provider;\n\n")

make/jdk/src/classes/build/tools/generatelsrequivmaps/EquivMapsGenerator.java

@@ -30,13 +30,15 @@
 import java.nio.charset.Charset;
 import java.nio.file.Files;
 import java.nio.file.Paths;
-import java.time.ZoneId;
-import java.time.ZonedDateTime;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.GregorianCalendar;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
+import java.util.TimeZone;
 import java.util.TreeMap;
 import java.util.stream.Collectors;
 
@@ -52,17 +54,19 @@
 public class EquivMapsGenerator {
 
     public static void main(String[] args) throws Exception {
-        if (args.length != 2) {
+        if (args.length != 3) {
             System.err.println("Usage: java EquivMapsGenerator"
-                    + " language-subtag-registry.txt LocaleEquivalentMaps.java");
+                    + " language-subtag-registry.txt LocaleEquivalentMaps.java copyrightYear");
             System.exit(1);
         }
+        copyrightYear = Integer.parseInt(args[2]);
         readLSRfile(args[0]);
         generateEquivalentMap();
         generateSourceCode(args[1]);
     }
 
     private static String LSRrevisionDate;
+    private static int copyrightYear;
     private static Map<String, StringBuilder> initialLanguageMap =
         new TreeMap<>();
     private static Map<String, StringBuilder> initialRegionVariantMap =
@@ -246,9 +250,7 @@ private static String generateValuesString(String[] values) {
         + "}";
 
     private static String getOpenJDKCopyright() {
-        int year = ZonedDateTime.now(ZoneId
-                .of("America/Los_Angeles")).getYear();
-        return String.format(Locale.US, COPYRIGHT, year);
+        return String.format(Locale.US, COPYRIGHT, copyrightYear);
     }
 
     /**

make/modules/java.base/Gensrc.gmk

@@ -62,6 +62,7 @@ $(CLDR_GEN_DONE): $(wildcard $(CLDR_DATA_DIR)/dtd/*.dtd) \
 	    -baselocales "en-US" \
 	    -o $(GENSRC_DIR) \
 	    -basemodule \
+	    -year $(COPYRIGHT_YEAR) \
 	    -zntempfile $(ZONENAME_TEMPLATE) \
 	    -tzdatadir $(TZ_DATA_DIR))
 	$(TOUCH) $@
@@ -99,7 +100,7 @@ GENSRC_LSREQUIVMAPS := $(SUPPORT_OUTPUTDIR)/gensrc/java.base/sun/util/locale/Loc
 
 $(GENSRC_LSREQUIVMAPS): $(TOPDIR)/make/data/lsrdata/language-subtag-registry.txt $(BUILD_TOOLS_JDK)
 	$(call MakeDir, $(@D))
-	$(TOOL_GENERATELSREQUIVMAPS) $< $@
+	$(TOOL_GENERATELSREQUIVMAPS) $< $@ $(COPYRIGHT_YEAR)
 
 TARGETS += $(GENSRC_LSREQUIVMAPS)
 

make/modules/jdk.localedata/Gensrc.gmk

@@ -46,6 +46,7 @@ $(CLDR_GEN_DONE): $(wildcard $(CLDR_DATA_DIR)/dtd/*.dtd) \
 	$(call ExecuteWithLog, $@, \
 	    $(TOOL_CLDRCONVERTER) -base $(CLDR_DATA_DIR) \
 	    -baselocales "en-US" \
+	    -year $(COPYRIGHT_YEAR) \
 	    -o $(GENSRC_DIR))
 	$(TOUCH) $@