[gnome-bluetooth/wip/hadess/3.34.2: 1/2] build: Add check-news.sh helper

[Bastien Nocera <hadess src gnome org>]

commit f8706c33f2959b93e06ce386c9a067ad57e96042
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Sep 23 12:22:01 2020 +0200

    build: Add check-news.sh helper

 check-news.sh | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 meson.build   |  6 +++++
 2 files changed, 88 insertions(+)
---
diff --git a/check-news.sh b/check-news.sh
new file mode 100755
index 00000000..e7e8fa6b
--- /dev/null
+++ b/check-news.sh
@@ -0,0 +1,82 @@
+#!/bin/sh
+
+# Copyright (C) 2019 Red Hat, Inc.
+# Author: Bastien Nocera <hadess hadess net>
+#
+# 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
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA.
+
+
+# Add to your top-level meson.build to check for an updated NEWS file
+# when doing a "dist" release, similarly to automake's check-news:
+# https://www.gnu.org/software/automake/manual/html_node/List-of-Automake-options.html
+#
+# Checks NEWS for the version number:
+# meson.add_dist_script(
+#   find_program('check-news.sh').path(),
+#   '@0@'.format(meson.project_version())
+# )
+#
+# Checks NEWS and data/foo.appdata.xml for the version number:
+# meson.add_dist_script(
+#   find_program('check-news.sh').path(),
+#   '@0@'.format(meson.project_version()),
+#   'NEWS',
+#   'data/foo.appdata.xml'
+# )
+
+usage()
+{
+       echo "$0 VERSION [FILES...]"
+       exit 1
+}
+
+check_version()
+{
+       VERSION=$1
+       # Look in the first 15 lines for NEWS files, but look
+       # everywhere for other types of files
+       if [ "$2" = "NEWS" ]; then
+               DATA=`sed 15q $SRC_ROOT/"$2"`
+       else
+               DATA=`cat $SRC_ROOT/"$2"`
+       fi
+       case "$DATA" in
+       *"$VERSION"*)
+               :
+               ;;
+       *)
+               echo "$2 not updated; not releasing" 1>&2;
+               exit 1
+               ;;
+       esac
+}
+
+SRC_ROOT=${MESON_DIST_ROOT:-"./"}
+
+if [ $# -lt 1 ] ; then usage ; fi
+
+VERSION=$1
+shift
+
+if [ $# -eq 0 ] ; then
+       check_version $VERSION 'NEWS'
+       exit 0
+fi
+
+for i in $@ ; do
+       check_version $VERSION "$i"
+done
+
+exit 0
diff --git a/meson.build b/meson.build
index 02f11fbf..357b4eb8 100644
--- a/meson.build
+++ b/meson.build
@@ -133,3 +133,9 @@ output += '        Prefix......................:  ' + gnomebt_prefix + '\n'
 output += '        Documentation...............:  ' + enable_gtk_doc.to_string() + '\n'
 output += '        GObject-Introspection.......:  ' + enable_gir.to_string()
 message(output)
+
+meson.add_dist_script(
+  find_program('check-news.sh').path(),
+  '@0@'.format(meson.project_version()),
+  'NEWS',
+)