[gucharmap] appdata: Add skeleton appdata file

[Christian Persch <chpe src gnome org>]

commit d1ddb2fc8b43407f4d66f2750ec640577ca03cac
Author: Christian Persch <chpe gnome org>
Date:   Sat Aug 16 20:13:07 2014 +0200

    appdata: Add skeleton appdata file
    
    https://bugzilla.gnome.org/show_bug.cgi?id=722715

 Makefile.am                   |    2 +-
 configure.ac                  |    7 +++++++
 data/Makefile.am              |   30 ++++++++++++++++++++++++++++++
 data/gucharmap.appdata.xml.in |   41 +++++++++++++++++++++++++++++++++++++++++
 4 files changed, 79 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index f9d312c..fbdd6e9 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3,7 +3,7 @@ NULL =
 ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}
 GITIGNOREFILES = m4
 
-SUBDIRS = po pixmaps gucharmap docs
+SUBDIRS = po pixmaps gucharmap data docs
 
 if ENABLE_CHARMAP
 SUBDIRS += help
diff --git a/configure.ac b/configure.ac
index ee43861..26a3ea8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -177,6 +177,12 @@ if test -z "$DESKTOP_FILE_VALIDATE"; then
   AC_MSG_ERROR([desktop-file-validate not found])
 fi
 
+AC_ARG_VAR([APPDATA_VALIDATE],[the appdata-validate programme])
+AC_PATH_PROG([APPDATA_VALIDATE],[appdata-validate],[])
+if test -z "$APPDATA_VALIDATE"; then
+  AC_MSG_ERROR([appdata-validate not found])
+fi
+
 # ****
 # i18n
 # ****
@@ -280,6 +286,7 @@ Makefile
 gucharmap.desktop.in
 gucharmap.nsi
 gucharmap.spec
+data/Makefile
 docs/Makefile
 docs/reference/Makefile
 gucharmap/Makefile
diff --git a/data/Makefile.am b/data/Makefile.am
new file mode 100644
index 0000000..0bfdaa2
--- /dev/null
+++ b/data/Makefile.am
@@ -0,0 +1,30 @@
+NULL =
+
+appdatadir = $(datadir)/appdata
+appdata_in_files = gucharmap.appdata.xml.in
+nodist_appdata_DATA = $(appdata_in_files:.xml.in=.xml)
+
+APPDATA_VALIDATE_FLAGS = --nonet
+appdata-validate: $(nodist_appdata_DATA)
+       for f in $^; do \
+               $(APPDATA_VALIDATE) $(APPDATA_VALIDATE_FLAGS) $$f; \
+       done
+
+#check-local: appdata-validate
+
+EXTRA_DIST = \
+       $(appdata_in_files) \
+       $(NULL)
+
+CLEANFILES = \
+       $(nodist_appdata_DATA) \
+       $(NULL)
+
+DISTCLEANFILES = \
+       $(nodist_appdata_DATA) \
+       $(NULL)
+
+ INTLTOOL_XML_RULE@
+
+-include $(top_srcdir)/git.mk
+
diff --git a/data/gucharmap.appdata.xml.in b/data/gucharmap.appdata.xml.in
new file mode 100644
index 0000000..99734d4
--- /dev/null
+++ b/data/gucharmap.appdata.xml.in
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Copyright © 2014 Christian Persch
+
+  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, or (at your option)
+  any later version.
+
+  This program is distributed in the hope conf 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 <http://www.gnu.org/licenses/>.
+-->
+<!-- FIXME: the xmlns for appdata is made-up -->
+<application
+  xmlns="https://www.freedesktop.org/standards/appdata/1.0";
+  xmlns:xi="http://www.w3.org/2001/XInclude";
+  xmlns:its="http://www.w3.org/2005/11/its";>
+  <id type="desktop">gucharmap.desktop</id>
+  <metadata_license>GPL-3.0+</metadata_license>
+  <project_license>GPL-3.0+</project_license>
+  <_name>Character Map</_name>
+  <_summary>Insert special characters into documents</_summary>
+<!--  <description>
+    <_p>blah</_p>
+    <_p>blah blah</_p>
+    <_p>blah blah blah</_p>
+  </description>
+-->
+<!--
+  <screenshots>
+    <screenshot type="default">...</screenshot>
+  </screenshots>
+-->
+  <url type="homepage">https://wiki.gnome.org/Apps/Gucharmap</url>
+  <project_group>GNOME</project_group>
+</application>