File reproducible-jar.patch of Package gettext-java

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File reproducible-jar.patch of Package gettext-java

commit 06bb3d6f86c43c7eb259cb2f0b8522ad87df40f1
Author: Bruno Haible <bruno@clisp.org>
Date:   Tue Jul 16 23:59:05 2024 +0200

java: Create reproducible .jar files if the 'jar' utility supports it.
    
    Suggested by Bernhard M. Wiedemann <bwiedemann@suse.de> in
    <https://lists.gnu.org/archive/html/bug-gettext/2024-07/msg00020.html>.
    
    * build-aux/jar-cf: New file.
    * Makefile.am (EXTRA_DIST): Add it.
    * gettext-runtime/intl-java/Makefile.am (libintl.jar): Use jar-cf.
    * gettext-tools/src/Makefile.am (gettext.jar): Likewise.

diff --git a/Makefile.am b/Makefile.am
index c3ac6e0e5..4e2ad1128 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -54,7 +54,8 @@ EXTRA_DIST = \
   $(changelog_etc) DEPENDENCIES PACKAGING HACKING JOIN-GNU ChangeLog.0 \
   autogen.sh \
   check-copyright-headers \
-  build-aux/ac-help.sed build-aux/git-version-gen build-aux/texi2html \
+  build-aux/ac-help.sed build-aux/git-version-gen build-aux/jar-cf \
+  build-aux/texi2html \
   m4/fixautomake.m4 m4/woe32-dll.m4 \
   m4/libtool.m4
 
diff --git a/build-aux/jar-cf b/build-aux/jar-cf
new file mode 100755
index 000000000..f42578c02
--- /dev/null
+++ b/build-aux/jar-cf
@@ -0,0 +1,112 @@
+#!/bin/sh
+# Creating a Java archive (.jar).
+
+# Copyright (C) 2024 Free Software Foundation, Inc.
+#
+# This file is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published
+# by the Free Software Foundation, either version 3 of the License,
+# or (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Written by Bruno Haible <bruno@clisp.org>, 2024.
+
+# func_usage
+# outputs to stdout the --help usage message.
+func_usage ()
+{
+  echo "\
+Usage: jar-cf [OPTION]... JAR_PROGRAM TOP_SRCDIR DESTINATION.jar ELEMENT...
+
+Invokes the JAR_PROGRAM, to create DESTINATION.jar with the ELEMENTs as
+contents.
+
+Options:
+      --help           print this help and exit
+      --version        print version information and exit
+
+Send patches and bug reports to <bug-gettext@gnu.org>."
+}
+
+# func_version
+# outputs to stdout the --version message.
+func_version ()
+{
+  echo "jar-cf (GNU gettext)"
+  echo "Copyright (C) 2024 Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law."
+  echo
+  printf 'Written by %s.\n' "Bruno Haible"
+}
+
+# func_fatal_error message
+# outputs to stderr a fatal error message, and terminates the program.
+func_fatal_error ()
+{
+  echo "jar-cf: *** $1" 1>&2
+  echo "jar-cf: *** Stop." 1>&2
+  exit 1
+}
+
+# Outputs a command and runs it.
+func_verbose ()
+{
+  # Make it easy to copy&paste the printed command into a shell in most cases,
+  # by escaping '\\', '"', and '$'. This is not perfect, just good enough.
+  echo "$@" | sed -e 's/$[\\"$]$/\\\1/g'
+  "$@"
+}
+
+# Command-line option processing.
+while test $# -gt 0; do
+  case "$1" in
+    --help | --hel | --he | --h )
+      func_usage
+      exit 0 ;;
+   --version | --versio | --versi | --vers | --ver | --ve | --v )
+      func_version
+      exit 0 ;;
+    -- )      # Stop option processing
+      shift; break ;;
+    -* )
+      func_fatal_error "unrecognized option: $1"
+      ;;
+    * )
+      break ;;
+  esac
+done
+
+if test $# -lt 2; then
+  func_fatal_error "too few arguments"
+fi
+
+jar_program="$1"
+top_srcdir="$2"
+shift
+shift
+
+if $jar_program --help 2>&1 | grep '\-\-date=' >/dev/null; then
+  # The JAR_PROGRAM supports the --date option. Its effect is to set the given
+  # date as time stamp on all the ELEMENTs and also the META-INF/MANIFEST.MF.
+  # Use it, for reproducibility (cf. <https://reproducible-builds.org/>).
+  if test -d "$top_srcdir/.git"; then
+    # We are in a git checkout. Use the date of the latest commit.
+    date=`git log -n 1 --date=iso --format=fuller | sed -n -e 's/^CommitDate: //p' | sed -e 's/ /T/' -e 's/ $...$$..$$/\1:\2/'`
+  else
+    # We are building from a tarball.
+    # Use the date of the first entry of the ChangeLog file.
+    date=`sed -n -e 's/^$[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]$.*/\1/p' -e 1q "$top_srcdir/ChangeLog"`'T00:00:00+00:00'
+  fi
+  func_verbose $jar_program --date="$date" -c -f "$@"
+else
+  func_verbose $jar_program cf "$@"
+fi
diff --git a/gettext-runtime/intl-java/Makefile.am b/gettext-runtime/intl-java/Makefile.am
index a8c5290e9..4444f6e6c 100644
--- a/gettext-runtime/intl-java/Makefile.am
+++ b/gettext-runtime/intl-java/Makefile.am
@@ -1,5 +1,5 @@
 ## Makefile for the gettext-runtime/intl-java subdirectory of GNU gettext
-## Copyright (C) 2001-2003, 2006-2007, 2013 Free Software Foundation, Inc.
+## Copyright (C) 2001-2024 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
@@ -45,7 +45,7 @@ gnu/gettext/GettextResource.class: $(srcdir)/gnu/gettext/GettextResource.java
 	$(JAVACOMP) -d . $(srcdir)/gnu/gettext/GettextResource.java
 
 libintl.jar: gnu/gettext/GettextResource.class
-	$(JAR) cf $@ gnu/gettext/GettextResource*.class
+	$(top_srcdir)/../build-aux/jar-cf '$(JAR)' '$(top_srcdir)/..' $@ gnu/gettext/GettextResource*.class
 
 EXTRA_DIST += gnu/gettext/GettextResource.java
 
diff --git a/gettext-tools/src/Makefile.am b/gettext-tools/src/Makefile.am
index d95b08ed6..0316ca287 100644
--- a/gettext-tools/src/Makefile.am
+++ b/gettext-tools/src/Makefile.am
@@ -1,5 +1,5 @@
 ## Makefile for the gettext-tools/src subdirectory of GNU gettext
-## Copyright (C) 1995-1998, 2000-2023 Free Software Foundation, Inc.
+## Copyright (C) 1995-2024 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
@@ -655,7 +655,7 @@ gnu/gettext/GetURL.class: $(srcdir)/gnu/gettext/GetURL.java
 	$(JAVACOMP) -d . $(srcdir)/gnu/gettext/GetURL.java
 
 gettext.jar: gnu/gettext/DumpResource.class gnu/gettext/GetURL.class
-	$(JAR) cf $@ gnu/gettext/DumpResource*.class gnu/gettext/GetURL*.class
+	$(top_srcdir)/../build-aux/jar-cf '$(JAR)' '$(top_srcdir)/..' $@ gnu/gettext/DumpResource*.class gnu/gettext/GetURL*.class
 
 EXTRA_DIST += gnu/gettext/DumpResource.java gnu/gettext/GetURL.java

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